app/testpmd: fix flow transfer proxy port handling
[dpdk.git] / lib / pipeline / rte_swx_pipeline.c
index f796cec..2145ca0 100644 (file)
@@ -2,23 +2,12 @@
  * Copyright(c) 2020 Intel Corporation
  */
 #include <stdlib.h>
-#include <string.h>
 #include <stdio.h>
 #include <errno.h>
-#include <inttypes.h>
-#include <sys/queue.h>
 #include <arpa/inet.h>
+#include <dlfcn.h>
 
-#include <rte_common.h>
-#include <rte_prefetch.h>
-#include <rte_byteorder.h>
-#include <rte_cycles.h>
-#include <rte_meter.h>
-
-#include <rte_swx_table_selector.h>
-
-#include "rte_swx_pipeline.h"
-#include "rte_swx_ctl.h"
+#include "rte_swx_pipeline_internal.h"
 
 #define CHECK(condition, err_code)                                             \
 do {                                                                           \
@@ -39,22 +28,9 @@ do {                                                                           \
               RTE_SWX_INSTRUCTION_SIZE),                                      \
              err_code)
 
-#ifndef TRACE_LEVEL
-#define TRACE_LEVEL 0
-#endif
-
-#if TRACE_LEVEL
-#define TRACE(...) printf(__VA_ARGS__)
-#else
-#define TRACE(...)
-#endif
-
 /*
  * Environment.
  */
-#define ntoh64(x) rte_be_to_cpu_64(x)
-#define hton64(x) rte_cpu_to_be_64(x)
-
 #ifndef RTE_SWX_PIPELINE_HUGE_PAGES_DISABLE
 
 #include <rte_malloc.h>
@@ -105,2020 +81,1164 @@ env_free(void *start, size_t size)
 /*
  * Struct.
  */
-struct field {
-       char name[RTE_SWX_NAME_SIZE];
-       uint32_t n_bits;
-       uint32_t offset;
-};
+static struct struct_type *
+struct_type_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct struct_type *elem;
 
-struct struct_type {
-       TAILQ_ENTRY(struct_type) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct field *fields;
-       uint32_t n_fields;
-       uint32_t n_bits;
-};
+       TAILQ_FOREACH(elem, &p->struct_types, node)
+               if (strcmp(elem->name, name) == 0)
+                       return elem;
 
-TAILQ_HEAD(struct_type_tailq, struct_type);
+       return NULL;
+}
 
-/*
- * Input port.
- */
-struct port_in_type {
-       TAILQ_ENTRY(port_in_type) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct rte_swx_port_in_ops ops;
-};
+static struct field *
+struct_type_field_find(struct struct_type *st, const char *name)
+{
+       uint32_t i;
 
-TAILQ_HEAD(port_in_type_tailq, port_in_type);
+       for (i = 0; i < st->n_fields; i++) {
+               struct field *f = &st->fields[i];
 
-struct port_in {
-       TAILQ_ENTRY(port_in) node;
-       struct port_in_type *type;
-       void *obj;
-       uint32_t id;
-};
+               if (strcmp(f->name, name) == 0)
+                       return f;
+       }
 
-TAILQ_HEAD(port_in_tailq, port_in);
+       return NULL;
+}
 
-struct port_in_runtime {
-       rte_swx_port_in_pkt_rx_t pkt_rx;
-       void *obj;
-};
+int
+rte_swx_pipeline_struct_type_register(struct rte_swx_pipeline *p,
+                                     const char *name,
+                                     struct rte_swx_field_params *fields,
+                                     uint32_t n_fields,
+                                     int last_field_has_variable_size)
+{
+       struct struct_type *st;
+       uint32_t i;
 
-/*
- * Output port.
- */
-struct port_out_type {
-       TAILQ_ENTRY(port_out_type) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct rte_swx_port_out_ops ops;
-};
+       CHECK(p, EINVAL);
+       CHECK_NAME(name, EINVAL);
+       CHECK(fields, EINVAL);
+       CHECK(n_fields, EINVAL);
 
-TAILQ_HEAD(port_out_type_tailq, port_out_type);
+       for (i = 0; i < n_fields; i++) {
+               struct rte_swx_field_params *f = &fields[i];
+               int var_size = ((i == n_fields - 1) && last_field_has_variable_size) ? 1 : 0;
+               uint32_t j;
 
-struct port_out {
-       TAILQ_ENTRY(port_out) node;
-       struct port_out_type *type;
-       void *obj;
-       uint32_t id;
-};
+               CHECK_NAME(f->name, EINVAL);
+               CHECK(f->n_bits, EINVAL);
+               CHECK((f->n_bits <= 64) || var_size, EINVAL);
+               CHECK((f->n_bits & 7) == 0, EINVAL);
 
-TAILQ_HEAD(port_out_tailq, port_out);
+               for (j = 0; j < i; j++) {
+                       struct rte_swx_field_params *f_prev = &fields[j];
 
-struct port_out_runtime {
-       rte_swx_port_out_pkt_tx_t pkt_tx;
-       rte_swx_port_out_flush_t flush;
-       void *obj;
-};
+                       CHECK(strcmp(f->name, f_prev->name), EINVAL);
+               }
+       }
 
-/*
- * Extern object.
- */
-struct extern_type_member_func {
-       TAILQ_ENTRY(extern_type_member_func) node;
-       char name[RTE_SWX_NAME_SIZE];
-       rte_swx_extern_type_member_func_t func;
-       uint32_t id;
-};
+       CHECK(!struct_type_find(p, name), EEXIST);
 
-TAILQ_HEAD(extern_type_member_func_tailq, extern_type_member_func);
+       /* Node allocation. */
+       st = calloc(1, sizeof(struct struct_type));
+       CHECK(st, ENOMEM);
 
-struct extern_type {
-       TAILQ_ENTRY(extern_type) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct struct_type *mailbox_struct_type;
-       rte_swx_extern_type_constructor_t constructor;
-       rte_swx_extern_type_destructor_t destructor;
-       struct extern_type_member_func_tailq funcs;
-       uint32_t n_funcs;
-};
+       st->fields = calloc(n_fields, sizeof(struct field));
+       if (!st->fields) {
+               free(st);
+               CHECK(0, ENOMEM);
+       }
 
-TAILQ_HEAD(extern_type_tailq, extern_type);
+       /* Node initialization. */
+       strcpy(st->name, name);
+       for (i = 0; i < n_fields; i++) {
+               struct field *dst = &st->fields[i];
+               struct rte_swx_field_params *src = &fields[i];
+               int var_size = ((i == n_fields - 1) && last_field_has_variable_size) ? 1 : 0;
 
-struct extern_obj {
-       TAILQ_ENTRY(extern_obj) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct extern_type *type;
-       void *obj;
-       uint32_t struct_id;
-       uint32_t id;
-};
+               strcpy(dst->name, src->name);
+               dst->n_bits = src->n_bits;
+               dst->offset = st->n_bits;
+               dst->var_size = var_size;
 
-TAILQ_HEAD(extern_obj_tailq, extern_obj);
+               st->n_bits += src->n_bits;
+               st->n_bits_min += var_size ? 0 : src->n_bits;
+       }
+       st->n_fields = n_fields;
+       st->var_size = last_field_has_variable_size;
 
-#ifndef RTE_SWX_EXTERN_TYPE_MEMBER_FUNCS_MAX
-#define RTE_SWX_EXTERN_TYPE_MEMBER_FUNCS_MAX 8
-#endif
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->struct_types, st, node);
 
-struct extern_obj_runtime {
-       void *obj;
-       uint8_t *mailbox;
-       rte_swx_extern_type_member_func_t funcs[RTE_SWX_EXTERN_TYPE_MEMBER_FUNCS_MAX];
-};
+       return 0;
+}
 
-/*
- * Extern function.
- */
-struct extern_func {
-       TAILQ_ENTRY(extern_func) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct struct_type *mailbox_struct_type;
-       rte_swx_extern_func_t func;
-       uint32_t struct_id;
-       uint32_t id;
-};
+static int
+struct_build(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
 
-TAILQ_HEAD(extern_func_tailq, extern_func);
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
 
-struct extern_func_runtime {
-       uint8_t *mailbox;
-       rte_swx_extern_func_t func;
-};
+               t->structs = calloc(p->n_structs, sizeof(uint8_t *));
+               CHECK(t->structs, ENOMEM);
+       }
 
-/*
- * Header.
- */
-struct header {
-       TAILQ_ENTRY(header) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct struct_type *st;
-       uint32_t struct_id;
-       uint32_t id;
-};
+       return 0;
+}
 
-TAILQ_HEAD(header_tailq, header);
+static void
+struct_build_free(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
 
-struct header_runtime {
-       uint8_t *ptr0;
-       uint32_t n_bytes;
-};
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
 
-struct header_out_runtime {
-       uint8_t *ptr0;
-       uint8_t *ptr;
-       uint32_t n_bytes;
-};
+               free(t->structs);
+               t->structs = NULL;
+       }
+}
 
-/*
- * Instruction.
- */
+static void
+struct_free(struct rte_swx_pipeline *p)
+{
+       struct_build_free(p);
 
-/* Packet headers are always in Network Byte Order (NBO), i.e. big endian.
- * Packet meta-data fields are always assumed to be in Host Byte Order (HBO).
- * Table entry fields can be in either NBO or HBO; they are assumed to be in HBO
- * when transferred to packet meta-data and in NBO when transferred to packet
- * headers.
- */
+       /* Struct types. */
+       for ( ; ; ) {
+               struct struct_type *elem;
 
-/* Notation conventions:
- *    -Header field: H = h.header.field (dst/src)
- *    -Meta-data field: M = m.field (dst/src)
- *    -Extern object mailbox field: E = e.field (dst/src)
- *    -Extern function mailbox field: F = f.field (dst/src)
- *    -Table action data field: T = t.field (src only)
- *    -Immediate value: I = 32-bit unsigned value (src only)
- */
+               elem = TAILQ_FIRST(&p->struct_types);
+               if (!elem)
+                       break;
 
-enum instruction_type {
-       /* rx m.port_in */
-       INSTR_RX,
+               TAILQ_REMOVE(&p->struct_types, elem, node);
+               free(elem->fields);
+               free(elem);
+       }
+}
 
-       /* tx port_out
-        * port_out = MI
-        */
-       INSTR_TX,   /* port_out = M */
-       INSTR_TX_I, /* port_out = I */
-
-       /* extract h.header */
-       INSTR_HDR_EXTRACT,
-       INSTR_HDR_EXTRACT2,
-       INSTR_HDR_EXTRACT3,
-       INSTR_HDR_EXTRACT4,
-       INSTR_HDR_EXTRACT5,
-       INSTR_HDR_EXTRACT6,
-       INSTR_HDR_EXTRACT7,
-       INSTR_HDR_EXTRACT8,
-
-       /* emit h.header */
-       INSTR_HDR_EMIT,
-       INSTR_HDR_EMIT_TX,
-       INSTR_HDR_EMIT2_TX,
-       INSTR_HDR_EMIT3_TX,
-       INSTR_HDR_EMIT4_TX,
-       INSTR_HDR_EMIT5_TX,
-       INSTR_HDR_EMIT6_TX,
-       INSTR_HDR_EMIT7_TX,
-       INSTR_HDR_EMIT8_TX,
-
-       /* validate h.header */
-       INSTR_HDR_VALIDATE,
-
-       /* invalidate h.header */
-       INSTR_HDR_INVALIDATE,
-
-       /* mov dst src
-        * dst = src
-        * dst = HMEF, src = HMEFTI
-        */
-       INSTR_MOV,    /* dst = MEF, src = MEFT */
-       INSTR_MOV_MH, /* dst = MEF, src = H */
-       INSTR_MOV_HM, /* dst = H, src = MEFT */
-       INSTR_MOV_HH, /* dst = H, src = H */
-       INSTR_MOV_I,  /* dst = HMEF, src = I */
-
-       /* dma h.header t.field
-        * memcpy(h.header, t.field, sizeof(h.header))
-        */
-       INSTR_DMA_HT,
-       INSTR_DMA_HT2,
-       INSTR_DMA_HT3,
-       INSTR_DMA_HT4,
-       INSTR_DMA_HT5,
-       INSTR_DMA_HT6,
-       INSTR_DMA_HT7,
-       INSTR_DMA_HT8,
-
-       /* add dst src
-        * dst += src
-        * dst = HMEF, src = HMEFTI
-        */
-       INSTR_ALU_ADD,    /* dst = MEF, src = MEF */
-       INSTR_ALU_ADD_MH, /* dst = MEF, src = H */
-       INSTR_ALU_ADD_HM, /* dst = H, src = MEF */
-       INSTR_ALU_ADD_HH, /* dst = H, src = H */
-       INSTR_ALU_ADD_MI, /* dst = MEF, src = I */
-       INSTR_ALU_ADD_HI, /* dst = H, src = I */
-
-       /* sub dst src
-        * dst -= src
-        * dst = HMEF, src = HMEFTI
-        */
-       INSTR_ALU_SUB,    /* dst = MEF, src = MEF */
-       INSTR_ALU_SUB_MH, /* dst = MEF, src = H */
-       INSTR_ALU_SUB_HM, /* dst = H, src = MEF */
-       INSTR_ALU_SUB_HH, /* dst = H, src = H */
-       INSTR_ALU_SUB_MI, /* dst = MEF, src = I */
-       INSTR_ALU_SUB_HI, /* dst = H, src = I */
-
-       /* ckadd dst src
-        * dst = dst '+ src[0:1] '+ src[2:3] + ...
-        * dst = H, src = {H, h.header}
-        */
-       INSTR_ALU_CKADD_FIELD,    /* src = H */
-       INSTR_ALU_CKADD_STRUCT20, /* src = h.header, with sizeof(header) = 20 */
-       INSTR_ALU_CKADD_STRUCT,   /* src = h.hdeader, with any sizeof(header) */
+/*
+ * Input port.
+ */
+static struct port_in_type *
+port_in_type_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct port_in_type *elem;
 
-       /* cksub dst src
-        * dst = dst '- src
-        * dst = H, src = H
-        */
-       INSTR_ALU_CKSUB_FIELD,
+       if (!name)
+               return NULL;
 
-       /* and dst src
-        * dst &= src
-        * dst = HMEF, src = HMEFTI
-        */
-       INSTR_ALU_AND,    /* dst = MEF, src = MEFT */
-       INSTR_ALU_AND_MH, /* dst = MEF, src = H */
-       INSTR_ALU_AND_HM, /* dst = H, src = MEFT */
-       INSTR_ALU_AND_HH, /* dst = H, src = H */
-       INSTR_ALU_AND_I,  /* dst = HMEF, src = I */
-
-       /* or dst src
-        * dst |= src
-        * dst = HMEF, src = HMEFTI
-        */
-       INSTR_ALU_OR,    /* dst = MEF, src = MEFT */
-       INSTR_ALU_OR_MH, /* dst = MEF, src = H */
-       INSTR_ALU_OR_HM, /* dst = H, src = MEFT */
-       INSTR_ALU_OR_HH, /* dst = H, src = H */
-       INSTR_ALU_OR_I,  /* dst = HMEF, src = I */
-
-       /* xor dst src
-        * dst ^= src
-        * dst = HMEF, src = HMEFTI
-        */
-       INSTR_ALU_XOR,    /* dst = MEF, src = MEFT */
-       INSTR_ALU_XOR_MH, /* dst = MEF, src = H */
-       INSTR_ALU_XOR_HM, /* dst = H, src = MEFT */
-       INSTR_ALU_XOR_HH, /* dst = H, src = H */
-       INSTR_ALU_XOR_I,  /* dst = HMEF, src = I */
-
-       /* shl dst src
-        * dst <<= src
-        * dst = HMEF, src = HMEFTI
-        */
-       INSTR_ALU_SHL,    /* dst = MEF, src = MEF */
-       INSTR_ALU_SHL_MH, /* dst = MEF, src = H */
-       INSTR_ALU_SHL_HM, /* dst = H, src = MEF */
-       INSTR_ALU_SHL_HH, /* dst = H, src = H */
-       INSTR_ALU_SHL_MI, /* dst = MEF, src = I */
-       INSTR_ALU_SHL_HI, /* dst = H, src = I */
-
-       /* shr dst src
-        * dst >>= src
-        * dst = HMEF, src = HMEFTI
-        */
-       INSTR_ALU_SHR,    /* dst = MEF, src = MEF */
-       INSTR_ALU_SHR_MH, /* dst = MEF, src = H */
-       INSTR_ALU_SHR_HM, /* dst = H, src = MEF */
-       INSTR_ALU_SHR_HH, /* dst = H, src = H */
-       INSTR_ALU_SHR_MI, /* dst = MEF, src = I */
-       INSTR_ALU_SHR_HI, /* dst = H, src = I */
-
-       /* regprefetch REGARRAY index
-        * prefetch REGARRAY[index]
-        * index = HMEFTI
-        */
-       INSTR_REGPREFETCH_RH, /* index = H */
-       INSTR_REGPREFETCH_RM, /* index = MEFT */
-       INSTR_REGPREFETCH_RI, /* index = I */
+       TAILQ_FOREACH(elem, &p->port_in_types, node)
+               if (strcmp(elem->name, name) == 0)
+                       return elem;
 
-       /* regrd dst REGARRAY index
-        * dst = REGARRAY[index]
-        * dst = HMEF, index = HMEFTI
-        */
-       INSTR_REGRD_HRH, /* dst = H, index = H */
-       INSTR_REGRD_HRM, /* dst = H, index = MEFT */
-       INSTR_REGRD_HRI, /* dst = H, index = I */
-       INSTR_REGRD_MRH, /* dst = MEF, index = H */
-       INSTR_REGRD_MRM, /* dst = MEF, index = MEFT */
-       INSTR_REGRD_MRI, /* dst = MEF, index = I */
-
-       /* regwr REGARRAY index src
-        * REGARRAY[index] = src
-        * index = HMEFTI, src = HMEFTI
-        */
-       INSTR_REGWR_RHH, /* index = H, src = H */
-       INSTR_REGWR_RHM, /* index = H, src = MEFT */
-       INSTR_REGWR_RHI, /* index = H, src = I */
-       INSTR_REGWR_RMH, /* index = MEFT, src = H */
-       INSTR_REGWR_RMM, /* index = MEFT, src = MEFT */
-       INSTR_REGWR_RMI, /* index = MEFT, src = I */
-       INSTR_REGWR_RIH, /* index = I, src = H */
-       INSTR_REGWR_RIM, /* index = I, src = MEFT */
-       INSTR_REGWR_RII, /* index = I, src = I */
-
-       /* regadd REGARRAY index src
-        * REGARRAY[index] += src
-        * index = HMEFTI, src = HMEFTI
-        */
-       INSTR_REGADD_RHH, /* index = H, src = H */
-       INSTR_REGADD_RHM, /* index = H, src = MEFT */
-       INSTR_REGADD_RHI, /* index = H, src = I */
-       INSTR_REGADD_RMH, /* index = MEFT, src = H */
-       INSTR_REGADD_RMM, /* index = MEFT, src = MEFT */
-       INSTR_REGADD_RMI, /* index = MEFT, src = I */
-       INSTR_REGADD_RIH, /* index = I, src = H */
-       INSTR_REGADD_RIM, /* index = I, src = MEFT */
-       INSTR_REGADD_RII, /* index = I, src = I */
-
-       /* metprefetch METARRAY index
-        * prefetch METARRAY[index]
-        * index = HMEFTI
-        */
-       INSTR_METPREFETCH_H, /* index = H */
-       INSTR_METPREFETCH_M, /* index = MEFT */
-       INSTR_METPREFETCH_I, /* index = I */
+       return NULL;
+}
 
-       /* meter METARRAY index length color_in color_out
-        * color_out = meter(METARRAY[index], length, color_in)
-        * index = HMEFTI, length = HMEFT, color_in = MEFTI, color_out = MEF
-        */
-       INSTR_METER_HHM, /* index = H, length = H, color_in = MEFT */
-       INSTR_METER_HHI, /* index = H, length = H, color_in = I */
-       INSTR_METER_HMM, /* index = H, length = MEFT, color_in = MEFT */
-       INSTR_METER_HMI, /* index = H, length = MEFT, color_in = I */
-       INSTR_METER_MHM, /* index = MEFT, length = H, color_in = MEFT */
-       INSTR_METER_MHI, /* index = MEFT, length = H, color_in = I */
-       INSTR_METER_MMM, /* index = MEFT, length = MEFT, color_in = MEFT */
-       INSTR_METER_MMI, /* index = MEFT, length = MEFT, color_in = I */
-       INSTR_METER_IHM, /* index = I, length = H, color_in = MEFT */
-       INSTR_METER_IHI, /* index = I, length = H, color_in = I */
-       INSTR_METER_IMM, /* index = I, length = MEFT, color_in = MEFT */
-       INSTR_METER_IMI, /* index = I, length = MEFT, color_in = I */
-
-       /* table TABLE */
-       INSTR_TABLE,
-       INSTR_SELECTOR,
-
-       /* extern e.obj.func */
-       INSTR_EXTERN_OBJ,
-
-       /* extern f.func */
-       INSTR_EXTERN_FUNC,
-
-       /* jmp LABEL
-        * Unconditional jump
-        */
-       INSTR_JMP,
+int
+rte_swx_pipeline_port_in_type_register(struct rte_swx_pipeline *p,
+                                      const char *name,
+                                      struct rte_swx_port_in_ops *ops)
+{
+       struct port_in_type *elem;
 
-       /* jmpv LABEL h.header
-        * Jump if header is valid
-        */
-       INSTR_JMP_VALID,
+       CHECK(p, EINVAL);
+       CHECK_NAME(name, EINVAL);
+       CHECK(ops, EINVAL);
+       CHECK(ops->create, EINVAL);
+       CHECK(ops->free, EINVAL);
+       CHECK(ops->pkt_rx, EINVAL);
+       CHECK(ops->stats_read, EINVAL);
 
-       /* jmpnv LABEL h.header
-        * Jump if header is invalid
-        */
-       INSTR_JMP_INVALID,
+       CHECK(!port_in_type_find(p, name), EEXIST);
 
-       /* jmph LABEL
-        * Jump if table lookup hit
-        */
-       INSTR_JMP_HIT,
+       /* Node allocation. */
+       elem = calloc(1, sizeof(struct port_in_type));
+       CHECK(elem, ENOMEM);
 
-       /* jmpnh LABEL
-        * Jump if table lookup miss
-        */
-       INSTR_JMP_MISS,
+       /* Node initialization. */
+       strcpy(elem->name, name);
+       memcpy(&elem->ops, ops, sizeof(*ops));
 
-       /* jmpa LABEL ACTION
-        * Jump if action run
-        */
-       INSTR_JMP_ACTION_HIT,
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->port_in_types, elem, node);
 
-       /* jmpna LABEL ACTION
-        * Jump if action not run
-        */
-       INSTR_JMP_ACTION_MISS,
+       return 0;
+}
 
-       /* jmpeq LABEL a b
-        * Jump if a is equal to b
-        * a = HMEFT, b = HMEFTI
-        */
-       INSTR_JMP_EQ,    /* a = MEFT, b = MEFT */
-       INSTR_JMP_EQ_MH, /* a = MEFT, b = H */
-       INSTR_JMP_EQ_HM, /* a = H, b = MEFT */
-       INSTR_JMP_EQ_HH, /* a = H, b = H */
-       INSTR_JMP_EQ_I,  /* (a, b) = (MEFT, I) or (a, b) = (H, I) */
-
-       /* jmpneq LABEL a b
-        * Jump if a is not equal to b
-        * a = HMEFT, b = HMEFTI
-        */
-       INSTR_JMP_NEQ,    /* a = MEFT, b = MEFT */
-       INSTR_JMP_NEQ_MH, /* a = MEFT, b = H */
-       INSTR_JMP_NEQ_HM, /* a = H, b = MEFT */
-       INSTR_JMP_NEQ_HH, /* a = H, b = H */
-       INSTR_JMP_NEQ_I,  /* (a, b) = (MEFT, I) or (a, b) = (H, I) */
-
-       /* jmplt LABEL a b
-        * Jump if a is less than b
-        * a = HMEFT, b = HMEFTI
-        */
-       INSTR_JMP_LT,    /* a = MEFT, b = MEFT */
-       INSTR_JMP_LT_MH, /* a = MEFT, b = H */
-       INSTR_JMP_LT_HM, /* a = H, b = MEFT */
-       INSTR_JMP_LT_HH, /* a = H, b = H */
-       INSTR_JMP_LT_MI, /* a = MEFT, b = I */
-       INSTR_JMP_LT_HI, /* a = H, b = I */
-
-       /* jmpgt LABEL a b
-        * Jump if a is greater than b
-        * a = HMEFT, b = HMEFTI
-        */
-       INSTR_JMP_GT,    /* a = MEFT, b = MEFT */
-       INSTR_JMP_GT_MH, /* a = MEFT, b = H */
-       INSTR_JMP_GT_HM, /* a = H, b = MEFT */
-       INSTR_JMP_GT_HH, /* a = H, b = H */
-       INSTR_JMP_GT_MI, /* a = MEFT, b = I */
-       INSTR_JMP_GT_HI, /* a = H, b = I */
-
-       /* return
-        * Return from action
-        */
-       INSTR_RETURN,
-};
+static struct port_in *
+port_in_find(struct rte_swx_pipeline *p, uint32_t port_id)
+{
+       struct port_in *port;
 
-struct instr_operand {
-       uint8_t struct_id;
-       uint8_t n_bits;
-       uint8_t offset;
-       uint8_t pad;
-};
+       TAILQ_FOREACH(port, &p->ports_in, node)
+               if (port->id == port_id)
+                       return port;
 
-struct instr_io {
-       struct {
-               union {
-                       struct {
-                               uint8_t offset;
-                               uint8_t n_bits;
-                               uint8_t pad[2];
-                       };
-
-                       uint32_t val;
-               };
-       } io;
-
-       struct {
-               uint8_t header_id[8];
-               uint8_t struct_id[8];
-               uint8_t n_bytes[8];
-       } hdr;
-};
+       return NULL;
+}
 
-struct instr_hdr_validity {
-       uint8_t header_id;
-};
+int
+rte_swx_pipeline_port_in_config(struct rte_swx_pipeline *p,
+                               uint32_t port_id,
+                               const char *port_type_name,
+                               void *args)
+{
+       struct port_in_type *type = NULL;
+       struct port_in *port = NULL;
+       void *obj = NULL;
 
-struct instr_table {
-       uint8_t table_id;
-};
+       CHECK(p, EINVAL);
 
-struct instr_extern_obj {
-       uint8_t ext_obj_id;
-       uint8_t func_id;
-};
+       CHECK(!port_in_find(p, port_id), EINVAL);
 
-struct instr_extern_func {
-       uint8_t ext_func_id;
-};
+       CHECK_NAME(port_type_name, EINVAL);
+       type = port_in_type_find(p, port_type_name);
+       CHECK(type, EINVAL);
 
-struct instr_dst_src {
-       struct instr_operand dst;
-       union {
-               struct instr_operand src;
-               uint64_t src_val;
-       };
-};
+       obj = type->ops.create(args);
+       CHECK(obj, ENODEV);
 
-struct instr_regarray {
-       uint8_t regarray_id;
-       uint8_t pad[3];
+       /* Node allocation. */
+       port = calloc(1, sizeof(struct port_in));
+       CHECK(port, ENOMEM);
 
-       union {
-               struct instr_operand idx;
-               uint32_t idx_val;
-       };
-
-       union {
-               struct instr_operand dstsrc;
-               uint64_t dstsrc_val;
-       };
-};
-
-struct instr_meter {
-       uint8_t metarray_id;
-       uint8_t pad[3];
-
-       union {
-               struct instr_operand idx;
-               uint32_t idx_val;
-       };
-
-       struct instr_operand length;
-
-       union {
-               struct instr_operand color_in;
-               uint32_t color_in_val;
-       };
-
-       struct instr_operand color_out;
-};
-
-struct instr_dma {
-       struct {
-               uint8_t header_id[8];
-               uint8_t struct_id[8];
-       } dst;
-
-       struct {
-               uint8_t offset[8];
-       } src;
-
-       uint16_t n_bytes[8];
-};
+       /* Node initialization. */
+       port->type = type;
+       port->obj = obj;
+       port->id = port_id;
 
-struct instr_jmp {
-       struct instruction *ip;
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->ports_in, port, node);
+       if (p->n_ports_in < port_id + 1)
+               p->n_ports_in = port_id + 1;
 
-       union {
-               struct instr_operand a;
-               uint8_t header_id;
-               uint8_t action_id;
-       };
+       return 0;
+}
 
-       union {
-               struct instr_operand b;
-               uint64_t b_val;
-       };
-};
+static int
+port_in_build(struct rte_swx_pipeline *p)
+{
+       struct port_in *port;
+       uint32_t i;
 
-struct instruction {
-       enum instruction_type type;
-       union {
-               struct instr_io io;
-               struct instr_hdr_validity valid;
-               struct instr_dst_src mov;
-               struct instr_regarray regarray;
-               struct instr_meter meter;
-               struct instr_dma dma;
-               struct instr_dst_src alu;
-               struct instr_table table;
-               struct instr_extern_obj ext_obj;
-               struct instr_extern_func ext_func;
-               struct instr_jmp jmp;
-       };
-};
+       CHECK(p->n_ports_in, EINVAL);
+       CHECK(rte_is_power_of_2(p->n_ports_in), EINVAL);
 
-struct instruction_data {
-       char label[RTE_SWX_NAME_SIZE];
-       char jmp_label[RTE_SWX_NAME_SIZE];
-       uint32_t n_users; /* user = jmp instruction to this instruction. */
-       int invalid;
-};
+       for (i = 0; i < p->n_ports_in; i++)
+               CHECK(port_in_find(p, i), EINVAL);
 
-/*
- * Action.
- */
-struct action {
-       TAILQ_ENTRY(action) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct struct_type *st;
-       int *args_endianness; /* 0 = Host Byte Order (HBO). */
-       struct instruction *instructions;
-       uint32_t n_instructions;
-       uint32_t id;
-};
+       p->in = calloc(p->n_ports_in, sizeof(struct port_in_runtime));
+       CHECK(p->in, ENOMEM);
 
-TAILQ_HEAD(action_tailq, action);
+       TAILQ_FOREACH(port, &p->ports_in, node) {
+               struct port_in_runtime *in = &p->in[port->id];
 
-/*
- * Table.
- */
-struct table_type {
-       TAILQ_ENTRY(table_type) node;
-       char name[RTE_SWX_NAME_SIZE];
-       enum rte_swx_table_match_type match_type;
-       struct rte_swx_table_ops ops;
-};
+               in->pkt_rx = port->type->ops.pkt_rx;
+               in->obj = port->obj;
+       }
 
-TAILQ_HEAD(table_type_tailq, table_type);
+       return 0;
+}
 
-struct match_field {
-       enum rte_swx_table_match_type match_type;
-       struct field *field;
-};
+static void
+port_in_build_free(struct rte_swx_pipeline *p)
+{
+       free(p->in);
+       p->in = NULL;
+}
 
-struct table {
-       TAILQ_ENTRY(table) node;
-       char name[RTE_SWX_NAME_SIZE];
-       char args[RTE_SWX_NAME_SIZE];
-       struct table_type *type; /* NULL when n_fields == 0. */
+static void
+port_in_free(struct rte_swx_pipeline *p)
+{
+       port_in_build_free(p);
 
-       /* Match. */
-       struct match_field *fields;
-       uint32_t n_fields;
-       struct header *header; /* Only valid when n_fields > 0. */
+       /* Input ports. */
+       for ( ; ; ) {
+               struct port_in *port;
 
-       /* Action. */
-       struct action **actions;
-       struct action *default_action;
-       uint8_t *default_action_data;
-       uint32_t n_actions;
-       int default_action_is_const;
-       uint32_t action_data_size_max;
+               port = TAILQ_FIRST(&p->ports_in);
+               if (!port)
+                       break;
 
-       uint32_t size;
-       uint32_t id;
-};
+               TAILQ_REMOVE(&p->ports_in, port, node);
+               port->type->ops.free(port->obj);
+               free(port);
+       }
 
-TAILQ_HEAD(table_tailq, table);
+       /* Input port types. */
+       for ( ; ; ) {
+               struct port_in_type *elem;
 
-struct table_runtime {
-       rte_swx_table_lookup_t func;
-       void *mailbox;
-       uint8_t **key;
-};
+               elem = TAILQ_FIRST(&p->port_in_types);
+               if (!elem)
+                       break;
 
-struct table_statistics {
-       uint64_t n_pkts_hit[2]; /* 0 = Miss, 1 = Hit. */
-       uint64_t *n_pkts_action;
-};
+               TAILQ_REMOVE(&p->port_in_types, elem, node);
+               free(elem);
+       }
+}
 
 /*
- * Selector.
+ * Output port.
  */
-struct selector {
-       TAILQ_ENTRY(selector) node;
-       char name[RTE_SWX_NAME_SIZE];
+static struct port_out_type *
+port_out_type_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct port_out_type *elem;
 
-       struct field *group_id_field;
-       struct field **selector_fields;
-       uint32_t n_selector_fields;
-       struct header *selector_header;
-       struct field *member_id_field;
+       if (!name)
+               return NULL;
 
-       uint32_t n_groups_max;
-       uint32_t n_members_per_group_max;
+       TAILQ_FOREACH(elem, &p->port_out_types, node)
+               if (!strcmp(elem->name, name))
+                       return elem;
 
-       uint32_t id;
-};
+       return NULL;
+}
 
-TAILQ_HEAD(selector_tailq, selector);
+int
+rte_swx_pipeline_port_out_type_register(struct rte_swx_pipeline *p,
+                                       const char *name,
+                                       struct rte_swx_port_out_ops *ops)
+{
+       struct port_out_type *elem;
 
-struct selector_runtime {
-       void *mailbox;
-       uint8_t **group_id_buffer;
-       uint8_t **selector_buffer;
-       uint8_t **member_id_buffer;
-};
+       CHECK(p, EINVAL);
+       CHECK_NAME(name, EINVAL);
+       CHECK(ops, EINVAL);
+       CHECK(ops->create, EINVAL);
+       CHECK(ops->free, EINVAL);
+       CHECK(ops->pkt_tx, EINVAL);
+       CHECK(ops->stats_read, EINVAL);
 
-struct selector_statistics {
-       uint64_t n_pkts;
-};
+       CHECK(!port_out_type_find(p, name), EEXIST);
 
-/*
- * Register array.
- */
-struct regarray {
-       TAILQ_ENTRY(regarray) node;
-       char name[RTE_SWX_NAME_SIZE];
-       uint64_t init_val;
-       uint32_t size;
-       uint32_t id;
-};
+       /* Node allocation. */
+       elem = calloc(1, sizeof(struct port_out_type));
+       CHECK(elem, ENOMEM);
 
-TAILQ_HEAD(regarray_tailq, regarray);
+       /* Node initialization. */
+       strcpy(elem->name, name);
+       memcpy(&elem->ops, ops, sizeof(*ops));
 
-struct regarray_runtime {
-       uint64_t *regarray;
-       uint32_t size_mask;
-};
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->port_out_types, elem, node);
 
-/*
- * Meter array.
- */
-struct meter_profile {
-       TAILQ_ENTRY(meter_profile) node;
-       char name[RTE_SWX_NAME_SIZE];
-       struct rte_meter_trtcm_params params;
-       struct rte_meter_trtcm_profile profile;
-       uint32_t n_users;
-};
+       return 0;
+}
 
-TAILQ_HEAD(meter_profile_tailq, meter_profile);
+static struct port_out *
+port_out_find(struct rte_swx_pipeline *p, uint32_t port_id)
+{
+       struct port_out *port;
 
-struct metarray {
-       TAILQ_ENTRY(metarray) node;
-       char name[RTE_SWX_NAME_SIZE];
-       uint32_t size;
-       uint32_t id;
-};
+       TAILQ_FOREACH(port, &p->ports_out, node)
+               if (port->id == port_id)
+                       return port;
 
-TAILQ_HEAD(metarray_tailq, metarray);
+       return NULL;
+}
 
-struct meter {
-       struct rte_meter_trtcm m;
-       struct meter_profile *profile;
-       enum rte_color color_mask;
-       uint8_t pad[20];
+int
+rte_swx_pipeline_port_out_config(struct rte_swx_pipeline *p,
+                                uint32_t port_id,
+                                const char *port_type_name,
+                                void *args)
+{
+       struct port_out_type *type = NULL;
+       struct port_out *port = NULL;
+       void *obj = NULL;
 
-       uint64_t n_pkts[RTE_COLORS];
-       uint64_t n_bytes[RTE_COLORS];
-};
+       CHECK(p, EINVAL);
 
-struct metarray_runtime {
-       struct meter *metarray;
-       uint32_t size_mask;
-};
+       CHECK(!port_out_find(p, port_id), EINVAL);
 
-/*
- * Pipeline.
- */
-struct thread {
-       /* Packet. */
-       struct rte_swx_pkt pkt;
-       uint8_t *ptr;
+       CHECK_NAME(port_type_name, EINVAL);
+       type = port_out_type_find(p, port_type_name);
+       CHECK(type, EINVAL);
 
-       /* Structures. */
-       uint8_t **structs;
+       obj = type->ops.create(args);
+       CHECK(obj, ENODEV);
 
-       /* Packet headers. */
-       struct header_runtime *headers; /* Extracted or generated headers. */
-       struct header_out_runtime *headers_out; /* Emitted headers. */
-       uint8_t *header_storage;
-       uint8_t *header_out_storage;
-       uint64_t valid_headers;
-       uint32_t n_headers_out;
+       /* Node allocation. */
+       port = calloc(1, sizeof(struct port_out));
+       CHECK(port, ENOMEM);
 
-       /* Packet meta-data. */
-       uint8_t *metadata;
+       /* Node initialization. */
+       port->type = type;
+       port->obj = obj;
+       port->id = port_id;
 
-       /* Tables. */
-       struct table_runtime *tables;
-       struct selector_runtime *selectors;
-       struct rte_swx_table_state *table_state;
-       uint64_t action_id;
-       int hit; /* 0 = Miss, 1 = Hit. */
-
-       /* Extern objects and functions. */
-       struct extern_obj_runtime *extern_objs;
-       struct extern_func_runtime *extern_funcs;
-
-       /* Instructions. */
-       struct instruction *ip;
-       struct instruction *ret;
-};
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->ports_out, port, node);
+       if (p->n_ports_out < port_id + 1)
+               p->n_ports_out = port_id + 1;
 
-#define MASK64_BIT_GET(mask, pos) ((mask) & (1LLU << (pos)))
-#define MASK64_BIT_SET(mask, pos) ((mask) | (1LLU << (pos)))
-#define MASK64_BIT_CLR(mask, pos) ((mask) & ~(1LLU << (pos)))
-
-#define HEADER_VALID(thread, header_id) \
-       MASK64_BIT_GET((thread)->valid_headers, header_id)
-
-#define ALU(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->alu.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->alu.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->alu.dst.n_bits);       \
-       uint64_t dst = dst64 & dst64_mask;                                     \
-                                                                              \
-       uint8_t *src_struct = (thread)->structs[(ip)->alu.src.struct_id];      \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->alu.src.offset];   \
-       uint64_t src64 = *src64_ptr;                                           \
-       uint64_t src64_mask = UINT64_MAX >> (64 - (ip)->alu.src.n_bits);       \
-       uint64_t src = src64 & src64_mask;                                     \
-                                                                              \
-       uint64_t result = dst operator src;                                    \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | (result & dst64_mask);            \
-}
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-#define ALU_MH(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->alu.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->alu.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->alu.dst.n_bits);       \
-       uint64_t dst = dst64 & dst64_mask;                                     \
-                                                                              \
-       uint8_t *src_struct = (thread)->structs[(ip)->alu.src.struct_id];      \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->alu.src.offset];   \
-       uint64_t src64 = *src64_ptr;                                           \
-       uint64_t src = ntoh64(src64) >> (64 - (ip)->alu.src.n_bits);           \
-                                                                              \
-       uint64_t result = dst operator src;                                    \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | (result & dst64_mask);            \
-}
-
-#define ALU_HM(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->alu.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->alu.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->alu.dst.n_bits);       \
-       uint64_t dst = ntoh64(dst64) >> (64 - (ip)->alu.dst.n_bits);           \
-                                                                              \
-       uint8_t *src_struct = (thread)->structs[(ip)->alu.src.struct_id];      \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->alu.src.offset];   \
-       uint64_t src64 = *src64_ptr;                                           \
-       uint64_t src64_mask = UINT64_MAX >> (64 - (ip)->alu.src.n_bits);       \
-       uint64_t src = src64 & src64_mask;                                     \
-                                                                              \
-       uint64_t result = dst operator src;                                    \
-       result = hton64(result << (64 - (ip)->alu.dst.n_bits));                \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | result;                           \
-}
-
-#define ALU_HM_FAST(thread, ip, operator)  \
-{                                                                                 \
-       uint8_t *dst_struct = (thread)->structs[(ip)->alu.dst.struct_id];         \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->alu.dst.offset];      \
-       uint64_t dst64 = *dst64_ptr;                                              \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->alu.dst.n_bits);          \
-       uint64_t dst = dst64 & dst64_mask;                                        \
-                                                                                 \
-       uint8_t *src_struct = (thread)->structs[(ip)->alu.src.struct_id];         \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->alu.src.offset];      \
-       uint64_t src64 = *src64_ptr;                                              \
-       uint64_t src64_mask = UINT64_MAX >> (64 - (ip)->alu.src.n_bits);          \
-       uint64_t src = hton64(src64 & src64_mask) >> (64 - (ip)->alu.dst.n_bits); \
-                                                                                 \
-       uint64_t result = dst operator src;                                       \
-                                                                                 \
-       *dst64_ptr = (dst64 & ~dst64_mask) | result;                              \
-}
-
-#define ALU_HH(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->alu.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->alu.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->alu.dst.n_bits);       \
-       uint64_t dst = ntoh64(dst64) >> (64 - (ip)->alu.dst.n_bits);           \
-                                                                              \
-       uint8_t *src_struct = (thread)->structs[(ip)->alu.src.struct_id];      \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->alu.src.offset];   \
-       uint64_t src64 = *src64_ptr;                                           \
-       uint64_t src = ntoh64(src64) >> (64 - (ip)->alu.src.n_bits);           \
-                                                                              \
-       uint64_t result = dst operator src;                                    \
-       result = hton64(result << (64 - (ip)->alu.dst.n_bits));                \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | result;                           \
-}
-
-#define ALU_HH_FAST(thread, ip, operator)  \
-{                                                                                             \
-       uint8_t *dst_struct = (thread)->structs[(ip)->alu.dst.struct_id];                     \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->alu.dst.offset];                  \
-       uint64_t dst64 = *dst64_ptr;                                                          \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->alu.dst.n_bits);                      \
-       uint64_t dst = dst64 & dst64_mask;                                                    \
-                                                                                             \
-       uint8_t *src_struct = (thread)->structs[(ip)->alu.src.struct_id];                     \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->alu.src.offset];                  \
-       uint64_t src64 = *src64_ptr;                                                          \
-       uint64_t src = (src64 << (64 - (ip)->alu.src.n_bits)) >> (64 - (ip)->alu.dst.n_bits); \
-                                                                                             \
-       uint64_t result = dst operator src;                                                   \
-                                                                                             \
-       *dst64_ptr = (dst64 & ~dst64_mask) | result;                                          \
+       return 0;
 }
 
-#else
-
-#define ALU_MH ALU
-#define ALU_HM ALU
-#define ALU_HM_FAST ALU
-#define ALU_HH ALU
-#define ALU_HH_FAST ALU
+static int
+port_out_build(struct rte_swx_pipeline *p)
+{
+       struct port_out *port;
+       uint32_t i;
 
-#endif
+       CHECK(p->n_ports_out, EINVAL);
 
-#define ALU_I(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->alu.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->alu.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->alu.dst.n_bits);       \
-       uint64_t dst = dst64 & dst64_mask;                                     \
-                                                                              \
-       uint64_t src = (ip)->alu.src_val;                                      \
-                                                                              \
-       uint64_t result = dst operator src;                                    \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | (result & dst64_mask);            \
-}
-
-#define ALU_MI ALU_I
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-#define ALU_HI(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->alu.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->alu.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->alu.dst.n_bits);       \
-       uint64_t dst = ntoh64(dst64) >> (64 - (ip)->alu.dst.n_bits);           \
-                                                                              \
-       uint64_t src = (ip)->alu.src_val;                                      \
-                                                                              \
-       uint64_t result = dst operator src;                                    \
-       result = hton64(result << (64 - (ip)->alu.dst.n_bits));                \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | result;                           \
-}
+       for (i = 0; i < p->n_ports_out; i++)
+               CHECK(port_out_find(p, i), EINVAL);
 
-#else
+       p->out = calloc(p->n_ports_out, sizeof(struct port_out_runtime));
+       CHECK(p->out, ENOMEM);
 
-#define ALU_HI ALU_I
+       TAILQ_FOREACH(port, &p->ports_out, node) {
+               struct port_out_runtime *out = &p->out[port->id];
 
-#endif
+               out->pkt_tx = port->type->ops.pkt_tx;
+               out->flush = port->type->ops.flush;
+               out->obj = port->obj;
+       }
 
-#define MOV(thread, ip)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->mov.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->mov.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->mov.dst.n_bits);       \
-                                                                              \
-       uint8_t *src_struct = (thread)->structs[(ip)->mov.src.struct_id];      \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->mov.src.offset];   \
-       uint64_t src64 = *src64_ptr;                                           \
-       uint64_t src64_mask = UINT64_MAX >> (64 - (ip)->mov.src.n_bits);       \
-       uint64_t src = src64 & src64_mask;                                     \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | (src & dst64_mask);               \
-}
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-#define MOV_MH(thread, ip)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->mov.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->mov.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->mov.dst.n_bits);       \
-                                                                              \
-       uint8_t *src_struct = (thread)->structs[(ip)->mov.src.struct_id];      \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->mov.src.offset];   \
-       uint64_t src64 = *src64_ptr;                                           \
-       uint64_t src = ntoh64(src64) >> (64 - (ip)->mov.src.n_bits);           \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | (src & dst64_mask);               \
-}
-
-#define MOV_HM(thread, ip)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->mov.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->mov.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->mov.dst.n_bits);       \
-                                                                              \
-       uint8_t *src_struct = (thread)->structs[(ip)->mov.src.struct_id];      \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->mov.src.offset];   \
-       uint64_t src64 = *src64_ptr;                                           \
-       uint64_t src64_mask = UINT64_MAX >> (64 - (ip)->mov.src.n_bits);       \
-       uint64_t src = src64 & src64_mask;                                     \
-                                                                              \
-       src = hton64(src) >> (64 - (ip)->mov.dst.n_bits);                      \
-       *dst64_ptr = (dst64 & ~dst64_mask) | src;                              \
-}
-
-#define MOV_HH(thread, ip)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->mov.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->mov.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->mov.dst.n_bits);       \
-                                                                              \
-       uint8_t *src_struct = (thread)->structs[(ip)->mov.src.struct_id];      \
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[(ip)->mov.src.offset];   \
-       uint64_t src64 = *src64_ptr;                                           \
-                                                                              \
-       uint64_t src = src64 << (64 - (ip)->mov.src.n_bits);                   \
-       src = src >> (64 - (ip)->mov.dst.n_bits);                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | src;                              \
+       return 0;
 }
 
-#else
+static void
+port_out_build_free(struct rte_swx_pipeline *p)
+{
+       free(p->out);
+       p->out = NULL;
+}
 
-#define MOV_MH MOV
-#define MOV_HM MOV
-#define MOV_HH MOV
+static void
+port_out_free(struct rte_swx_pipeline *p)
+{
+       port_out_build_free(p);
 
-#endif
+       /* Output ports. */
+       for ( ; ; ) {
+               struct port_out *port;
 
-#define MOV_I(thread, ip)  \
-{                                                                              \
-       uint8_t *dst_struct = (thread)->structs[(ip)->mov.dst.struct_id];      \
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[(ip)->mov.dst.offset];   \
-       uint64_t dst64 = *dst64_ptr;                                           \
-       uint64_t dst64_mask = UINT64_MAX >> (64 - (ip)->mov.dst.n_bits);       \
-                                                                              \
-       uint64_t src = (ip)->mov.src_val;                                      \
-                                                                              \
-       *dst64_ptr = (dst64 & ~dst64_mask) | (src & dst64_mask);               \
-}
-
-#define JMP_CMP(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *a_struct = (thread)->structs[(ip)->jmp.a.struct_id];          \
-       uint64_t *a64_ptr = (uint64_t *)&a_struct[(ip)->jmp.a.offset];         \
-       uint64_t a64 = *a64_ptr;                                               \
-       uint64_t a64_mask = UINT64_MAX >> (64 - (ip)->jmp.a.n_bits);           \
-       uint64_t a = a64 & a64_mask;                                           \
-                                                                              \
-       uint8_t *b_struct = (thread)->structs[(ip)->jmp.b.struct_id];          \
-       uint64_t *b64_ptr = (uint64_t *)&b_struct[(ip)->jmp.b.offset];         \
-       uint64_t b64 = *b64_ptr;                                               \
-       uint64_t b64_mask = UINT64_MAX >> (64 - (ip)->jmp.b.n_bits);           \
-       uint64_t b = b64 & b64_mask;                                           \
-                                                                              \
-       (thread)->ip = (a operator b) ? (ip)->jmp.ip : ((thread)->ip + 1);     \
-}
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-#define JMP_CMP_MH(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *a_struct = (thread)->structs[(ip)->jmp.a.struct_id];          \
-       uint64_t *a64_ptr = (uint64_t *)&a_struct[(ip)->jmp.a.offset];         \
-       uint64_t a64 = *a64_ptr;                                               \
-       uint64_t a64_mask = UINT64_MAX >> (64 - (ip)->jmp.a.n_bits);           \
-       uint64_t a = a64 & a64_mask;                                           \
-                                                                              \
-       uint8_t *b_struct = (thread)->structs[(ip)->jmp.b.struct_id];          \
-       uint64_t *b64_ptr = (uint64_t *)&b_struct[(ip)->jmp.b.offset];         \
-       uint64_t b64 = *b64_ptr;                                               \
-       uint64_t b = ntoh64(b64) >> (64 - (ip)->jmp.b.n_bits);                 \
-                                                                              \
-       (thread)->ip = (a operator b) ? (ip)->jmp.ip : ((thread)->ip + 1);     \
-}
-
-#define JMP_CMP_HM(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *a_struct = (thread)->structs[(ip)->jmp.a.struct_id];          \
-       uint64_t *a64_ptr = (uint64_t *)&a_struct[(ip)->jmp.a.offset];         \
-       uint64_t a64 = *a64_ptr;                                               \
-       uint64_t a = ntoh64(a64) >> (64 - (ip)->jmp.a.n_bits);                 \
-                                                                              \
-       uint8_t *b_struct = (thread)->structs[(ip)->jmp.b.struct_id];          \
-       uint64_t *b64_ptr = (uint64_t *)&b_struct[(ip)->jmp.b.offset];         \
-       uint64_t b64 = *b64_ptr;                                               \
-       uint64_t b64_mask = UINT64_MAX >> (64 - (ip)->jmp.b.n_bits);           \
-       uint64_t b = b64 & b64_mask;                                           \
-                                                                              \
-       (thread)->ip = (a operator b) ? (ip)->jmp.ip : ((thread)->ip + 1);     \
-}
-
-#define JMP_CMP_HH(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *a_struct = (thread)->structs[(ip)->jmp.a.struct_id];          \
-       uint64_t *a64_ptr = (uint64_t *)&a_struct[(ip)->jmp.a.offset];         \
-       uint64_t a64 = *a64_ptr;                                               \
-       uint64_t a = ntoh64(a64) >> (64 - (ip)->jmp.a.n_bits);                 \
-                                                                              \
-       uint8_t *b_struct = (thread)->structs[(ip)->jmp.b.struct_id];          \
-       uint64_t *b64_ptr = (uint64_t *)&b_struct[(ip)->jmp.b.offset];         \
-       uint64_t b64 = *b64_ptr;                                               \
-       uint64_t b = ntoh64(b64) >> (64 - (ip)->jmp.b.n_bits);                 \
-                                                                              \
-       (thread)->ip = (a operator b) ? (ip)->jmp.ip : ((thread)->ip + 1);     \
-}
-
-#define JMP_CMP_HH_FAST(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *a_struct = (thread)->structs[(ip)->jmp.a.struct_id];          \
-       uint64_t *a64_ptr = (uint64_t *)&a_struct[(ip)->jmp.a.offset];         \
-       uint64_t a64 = *a64_ptr;                                               \
-       uint64_t a = a64 << (64 - (ip)->jmp.a.n_bits);                         \
-                                                                              \
-       uint8_t *b_struct = (thread)->structs[(ip)->jmp.b.struct_id];          \
-       uint64_t *b64_ptr = (uint64_t *)&b_struct[(ip)->jmp.b.offset];         \
-       uint64_t b64 = *b64_ptr;                                               \
-       uint64_t b = b64 << (64 - (ip)->jmp.b.n_bits);                         \
-                                                                              \
-       (thread)->ip = (a operator b) ? (ip)->jmp.ip : ((thread)->ip + 1);     \
-}
+               port = TAILQ_FIRST(&p->ports_out);
+               if (!port)
+                       break;
 
-#else
+               TAILQ_REMOVE(&p->ports_out, port, node);
+               port->type->ops.free(port->obj);
+               free(port);
+       }
 
-#define JMP_CMP_MH JMP_CMP
-#define JMP_CMP_HM JMP_CMP
-#define JMP_CMP_HH JMP_CMP
-#define JMP_CMP_HH_FAST JMP_CMP
+       /* Output port types. */
+       for ( ; ; ) {
+               struct port_out_type *elem;
 
-#endif
+               elem = TAILQ_FIRST(&p->port_out_types);
+               if (!elem)
+                       break;
 
-#define JMP_CMP_I(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *a_struct = (thread)->structs[(ip)->jmp.a.struct_id];          \
-       uint64_t *a64_ptr = (uint64_t *)&a_struct[(ip)->jmp.a.offset];         \
-       uint64_t a64 = *a64_ptr;                                               \
-       uint64_t a64_mask = UINT64_MAX >> (64 - (ip)->jmp.a.n_bits);           \
-       uint64_t a = a64 & a64_mask;                                           \
-                                                                              \
-       uint64_t b = (ip)->jmp.b_val;                                          \
-                                                                              \
-       (thread)->ip = (a operator b) ? (ip)->jmp.ip : ((thread)->ip + 1);     \
+               TAILQ_REMOVE(&p->port_out_types, elem, node);
+               free(elem);
+       }
 }
 
-#define JMP_CMP_MI JMP_CMP_I
+/*
+ * Extern object.
+ */
+static struct extern_type *
+extern_type_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct extern_type *elem;
 
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
+       TAILQ_FOREACH(elem, &p->extern_types, node)
+               if (strcmp(elem->name, name) == 0)
+                       return elem;
 
-#define JMP_CMP_HI(thread, ip, operator)  \
-{                                                                              \
-       uint8_t *a_struct = (thread)->structs[(ip)->jmp.a.struct_id];          \
-       uint64_t *a64_ptr = (uint64_t *)&a_struct[(ip)->jmp.a.offset];         \
-       uint64_t a64 = *a64_ptr;                                               \
-       uint64_t a = ntoh64(a64) >> (64 - (ip)->jmp.a.n_bits);                 \
-                                                                              \
-       uint64_t b = (ip)->jmp.b_val;                                          \
-                                                                              \
-       (thread)->ip = (a operator b) ? (ip)->jmp.ip : ((thread)->ip + 1);     \
+       return NULL;
 }
 
-#else
-
-#define JMP_CMP_HI JMP_CMP_I
-
-#endif
-
-#define METADATA_READ(thread, offset, n_bits)                                  \
-({                                                                             \
-       uint64_t *m64_ptr = (uint64_t *)&(thread)->metadata[offset];           \
-       uint64_t m64 = *m64_ptr;                                               \
-       uint64_t m64_mask = UINT64_MAX >> (64 - (n_bits));                     \
-       (m64 & m64_mask);                                                      \
-})
-
-#define METADATA_WRITE(thread, offset, n_bits, value)                          \
-{                                                                              \
-       uint64_t *m64_ptr = (uint64_t *)&(thread)->metadata[offset];           \
-       uint64_t m64 = *m64_ptr;                                               \
-       uint64_t m64_mask = UINT64_MAX >> (64 - (n_bits));                     \
-                                                                              \
-       uint64_t m_new = value;                                                \
-                                                                              \
-       *m64_ptr = (m64 & ~m64_mask) | (m_new & m64_mask);                     \
-}
-
-#ifndef RTE_SWX_PIPELINE_THREADS_MAX
-#define RTE_SWX_PIPELINE_THREADS_MAX 16
-#endif
-
-struct rte_swx_pipeline {
-       struct struct_type_tailq struct_types;
-       struct port_in_type_tailq port_in_types;
-       struct port_in_tailq ports_in;
-       struct port_out_type_tailq port_out_types;
-       struct port_out_tailq ports_out;
-       struct extern_type_tailq extern_types;
-       struct extern_obj_tailq extern_objs;
-       struct extern_func_tailq extern_funcs;
-       struct header_tailq headers;
-       struct struct_type *metadata_st;
-       uint32_t metadata_struct_id;
-       struct action_tailq actions;
-       struct table_type_tailq table_types;
-       struct table_tailq tables;
-       struct selector_tailq selectors;
-       struct regarray_tailq regarrays;
-       struct meter_profile_tailq meter_profiles;
-       struct metarray_tailq metarrays;
-
-       struct port_in_runtime *in;
-       struct port_out_runtime *out;
-       struct instruction **action_instructions;
-       struct rte_swx_table_state *table_state;
-       struct table_statistics *table_stats;
-       struct selector_statistics *selector_stats;
-       struct regarray_runtime *regarray_runtime;
-       struct metarray_runtime *metarray_runtime;
-       struct instruction *instructions;
-       struct thread threads[RTE_SWX_PIPELINE_THREADS_MAX];
-
-       uint32_t n_structs;
-       uint32_t n_ports_in;
-       uint32_t n_ports_out;
-       uint32_t n_extern_objs;
-       uint32_t n_extern_funcs;
-       uint32_t n_actions;
-       uint32_t n_tables;
-       uint32_t n_selectors;
-       uint32_t n_regarrays;
-       uint32_t n_metarrays;
-       uint32_t n_headers;
-       uint32_t thread_id;
-       uint32_t port_id;
-       uint32_t n_instructions;
-       int build_done;
-       int numa_node;
-};
-
-/*
- * Struct.
- */
-static struct struct_type *
-struct_type_find(struct rte_swx_pipeline *p, const char *name)
+static struct extern_type_member_func *
+extern_type_member_func_find(struct extern_type *type, const char *name)
 {
-       struct struct_type *elem;
+       struct extern_type_member_func *elem;
 
-       TAILQ_FOREACH(elem, &p->struct_types, node)
+       TAILQ_FOREACH(elem, &type->funcs, node)
                if (strcmp(elem->name, name) == 0)
                        return elem;
 
        return NULL;
 }
 
-static struct field *
-struct_type_field_find(struct struct_type *st, const char *name)
+static struct extern_obj *
+extern_obj_find(struct rte_swx_pipeline *p, const char *name)
 {
-       uint32_t i;
-
-       for (i = 0; i < st->n_fields; i++) {
-               struct field *f = &st->fields[i];
+       struct extern_obj *elem;
 
-               if (strcmp(f->name, name) == 0)
-                       return f;
-       }
+       TAILQ_FOREACH(elem, &p->extern_objs, node)
+               if (strcmp(elem->name, name) == 0)
+                       return elem;
 
        return NULL;
 }
 
-int
-rte_swx_pipeline_struct_type_register(struct rte_swx_pipeline *p,
-                                     const char *name,
-                                     struct rte_swx_field_params *fields,
-                                     uint32_t n_fields)
+static struct extern_type_member_func *
+extern_obj_member_func_parse(struct rte_swx_pipeline *p,
+                            const char *name,
+                            struct extern_obj **obj)
 {
-       struct struct_type *st;
-       uint32_t i;
-
-       CHECK(p, EINVAL);
-       CHECK_NAME(name, EINVAL);
-       CHECK(fields, EINVAL);
-       CHECK(n_fields, EINVAL);
-
-       for (i = 0; i < n_fields; i++) {
-               struct rte_swx_field_params *f = &fields[i];
-               uint32_t j;
+       struct extern_obj *object;
+       struct extern_type_member_func *func;
+       char *object_name, *func_name;
 
-               CHECK_NAME(f->name, EINVAL);
-               CHECK(f->n_bits, EINVAL);
-               CHECK(f->n_bits <= 64, EINVAL);
-               CHECK((f->n_bits & 7) == 0, EINVAL);
+       if (name[0] != 'e' || name[1] != '.')
+               return NULL;
 
-               for (j = 0; j < i; j++) {
-                       struct rte_swx_field_params *f_prev = &fields[j];
+       object_name = strdup(&name[2]);
+       if (!object_name)
+               return NULL;
 
-                       CHECK(strcmp(f->name, f_prev->name), EINVAL);
-               }
+       func_name = strchr(object_name, '.');
+       if (!func_name) {
+               free(object_name);
+               return NULL;
        }
 
-       CHECK(!struct_type_find(p, name), EEXIST);
-
-       /* Node allocation. */
-       st = calloc(1, sizeof(struct struct_type));
-       CHECK(st, ENOMEM);
+       *func_name = 0;
+       func_name++;
 
-       st->fields = calloc(n_fields, sizeof(struct field));
-       if (!st->fields) {
-               free(st);
-               CHECK(0, ENOMEM);
+       object = extern_obj_find(p, object_name);
+       if (!object) {
+               free(object_name);
+               return NULL;
        }
 
-       /* Node initialization. */
-       strcpy(st->name, name);
-       for (i = 0; i < n_fields; i++) {
-               struct field *dst = &st->fields[i];
-               struct rte_swx_field_params *src = &fields[i];
-
-               strcpy(dst->name, src->name);
-               dst->n_bits = src->n_bits;
-               dst->offset = st->n_bits;
-
-               st->n_bits += src->n_bits;
+       func = extern_type_member_func_find(object->type, func_name);
+       if (!func) {
+               free(object_name);
+               return NULL;
        }
-       st->n_fields = n_fields;
 
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->struct_types, st, node);
+       if (obj)
+               *obj = object;
 
-       return 0;
+       free(object_name);
+       return func;
 }
 
-static int
-struct_build(struct rte_swx_pipeline *p)
+static struct field *
+extern_obj_mailbox_field_parse(struct rte_swx_pipeline *p,
+                              const char *name,
+                              struct extern_obj **object)
 {
-       uint32_t i;
-
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
-
-               t->structs = calloc(p->n_structs, sizeof(uint8_t *));
-               CHECK(t->structs, ENOMEM);
-       }
-
-       return 0;
-}
+       struct extern_obj *obj;
+       struct field *f;
+       char *obj_name, *field_name;
 
-static void
-struct_build_free(struct rte_swx_pipeline *p)
-{
-       uint32_t i;
+       if ((name[0] != 'e') || (name[1] != '.'))
+               return NULL;
 
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
+       obj_name = strdup(&name[2]);
+       if (!obj_name)
+               return NULL;
 
-               free(t->structs);
-               t->structs = NULL;
+       field_name = strchr(obj_name, '.');
+       if (!field_name) {
+               free(obj_name);
+               return NULL;
        }
-}
-
-static void
-struct_free(struct rte_swx_pipeline *p)
-{
-       struct_build_free(p);
-
-       /* Struct types. */
-       for ( ; ; ) {
-               struct struct_type *elem;
 
-               elem = TAILQ_FIRST(&p->struct_types);
-               if (!elem)
-                       break;
+       *field_name = 0;
+       field_name++;
 
-               TAILQ_REMOVE(&p->struct_types, elem, node);
-               free(elem->fields);
-               free(elem);
+       obj = extern_obj_find(p, obj_name);
+       if (!obj) {
+               free(obj_name);
+               return NULL;
        }
-}
-
-/*
- * Input port.
- */
-static struct port_in_type *
-port_in_type_find(struct rte_swx_pipeline *p, const char *name)
-{
-       struct port_in_type *elem;
 
-       if (!name)
+       f = struct_type_field_find(obj->type->mailbox_struct_type, field_name);
+       if (!f) {
+               free(obj_name);
                return NULL;
+       }
 
-       TAILQ_FOREACH(elem, &p->port_in_types, node)
-               if (strcmp(elem->name, name) == 0)
-                       return elem;
+       if (object)
+               *object = obj;
 
-       return NULL;
+       free(obj_name);
+       return f;
 }
 
 int
-rte_swx_pipeline_port_in_type_register(struct rte_swx_pipeline *p,
-                                      const char *name,
-                                      struct rte_swx_port_in_ops *ops)
+rte_swx_pipeline_extern_type_register(struct rte_swx_pipeline *p,
+       const char *name,
+       const char *mailbox_struct_type_name,
+       rte_swx_extern_type_constructor_t constructor,
+       rte_swx_extern_type_destructor_t destructor)
 {
-       struct port_in_type *elem;
+       struct extern_type *elem;
+       struct struct_type *mailbox_struct_type;
 
        CHECK(p, EINVAL);
+
        CHECK_NAME(name, EINVAL);
-       CHECK(ops, EINVAL);
-       CHECK(ops->create, EINVAL);
-       CHECK(ops->free, EINVAL);
-       CHECK(ops->pkt_rx, EINVAL);
-       CHECK(ops->stats_read, EINVAL);
+       CHECK(!extern_type_find(p, name), EEXIST);
 
-       CHECK(!port_in_type_find(p, name), EEXIST);
+       CHECK_NAME(mailbox_struct_type_name, EINVAL);
+       mailbox_struct_type = struct_type_find(p, mailbox_struct_type_name);
+       CHECK(mailbox_struct_type, EINVAL);
+       CHECK(!mailbox_struct_type->var_size, EINVAL);
+
+       CHECK(constructor, EINVAL);
+       CHECK(destructor, EINVAL);
 
        /* Node allocation. */
-       elem = calloc(1, sizeof(struct port_in_type));
+       elem = calloc(1, sizeof(struct extern_type));
        CHECK(elem, ENOMEM);
 
        /* Node initialization. */
        strcpy(elem->name, name);
-       memcpy(&elem->ops, ops, sizeof(*ops));
+       elem->mailbox_struct_type = mailbox_struct_type;
+       elem->constructor = constructor;
+       elem->destructor = destructor;
+       TAILQ_INIT(&elem->funcs);
 
        /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->port_in_types, elem, node);
+       TAILQ_INSERT_TAIL(&p->extern_types, elem, node);
 
        return 0;
 }
 
-static struct port_in *
-port_in_find(struct rte_swx_pipeline *p, uint32_t port_id)
-{
-       struct port_in *port;
-
-       TAILQ_FOREACH(port, &p->ports_in, node)
-               if (port->id == port_id)
-                       return port;
-
-       return NULL;
-}
-
 int
-rte_swx_pipeline_port_in_config(struct rte_swx_pipeline *p,
-                               uint32_t port_id,
-                               const char *port_type_name,
-                               void *args)
+rte_swx_pipeline_extern_type_member_func_register(struct rte_swx_pipeline *p,
+       const char *extern_type_name,
+       const char *name,
+       rte_swx_extern_type_member_func_t member_func)
 {
-       struct port_in_type *type = NULL;
-       struct port_in *port = NULL;
-       void *obj = NULL;
+       struct extern_type *type;
+       struct extern_type_member_func *type_member;
 
        CHECK(p, EINVAL);
 
-       CHECK(!port_in_find(p, port_id), EINVAL);
-
-       CHECK_NAME(port_type_name, EINVAL);
-       type = port_in_type_find(p, port_type_name);
+       CHECK_NAME(extern_type_name, EINVAL);
+       type = extern_type_find(p, extern_type_name);
        CHECK(type, EINVAL);
+       CHECK(type->n_funcs < RTE_SWX_EXTERN_TYPE_MEMBER_FUNCS_MAX, ENOSPC);
 
-       obj = type->ops.create(args);
-       CHECK(obj, ENODEV);
+       CHECK_NAME(name, EINVAL);
+       CHECK(!extern_type_member_func_find(type, name), EEXIST);
+
+       CHECK(member_func, EINVAL);
 
        /* Node allocation. */
-       port = calloc(1, sizeof(struct port_in));
-       CHECK(port, ENOMEM);
+       type_member = calloc(1, sizeof(struct extern_type_member_func));
+       CHECK(type_member, ENOMEM);
 
        /* Node initialization. */
-       port->type = type;
-       port->obj = obj;
-       port->id = port_id;
+       strcpy(type_member->name, name);
+       type_member->func = member_func;
+       type_member->id = type->n_funcs;
 
        /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->ports_in, port, node);
-       if (p->n_ports_in < port_id + 1)
-               p->n_ports_in = port_id + 1;
+       TAILQ_INSERT_TAIL(&type->funcs, type_member, node);
+       type->n_funcs++;
+
+       return 0;
+}
+
+int
+rte_swx_pipeline_extern_object_config(struct rte_swx_pipeline *p,
+                                     const char *extern_type_name,
+                                     const char *name,
+                                     const char *args)
+{
+       struct extern_type *type;
+       struct extern_obj *obj;
+       void *obj_handle;
+
+       CHECK(p, EINVAL);
+
+       CHECK_NAME(extern_type_name, EINVAL);
+       type = extern_type_find(p, extern_type_name);
+       CHECK(type, EINVAL);
+
+       CHECK_NAME(name, EINVAL);
+       CHECK(!extern_obj_find(p, name), EEXIST);
+
+       /* Node allocation. */
+       obj = calloc(1, sizeof(struct extern_obj));
+       CHECK(obj, ENOMEM);
+
+       /* Object construction. */
+       obj_handle = type->constructor(args);
+       if (!obj_handle) {
+               free(obj);
+               CHECK(0, ENODEV);
+       }
+
+       /* Node initialization. */
+       strcpy(obj->name, name);
+       obj->type = type;
+       obj->obj = obj_handle;
+       obj->struct_id = p->n_structs;
+       obj->id = p->n_extern_objs;
+
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->extern_objs, obj, node);
+       p->n_extern_objs++;
+       p->n_structs++;
 
        return 0;
 }
 
 static int
-port_in_build(struct rte_swx_pipeline *p)
+extern_obj_build(struct rte_swx_pipeline *p)
 {
-       struct port_in *port;
        uint32_t i;
 
-       CHECK(p->n_ports_in, EINVAL);
-       CHECK(rte_is_power_of_2(p->n_ports_in), EINVAL);
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               struct extern_obj *obj;
 
-       for (i = 0; i < p->n_ports_in; i++)
-               CHECK(port_in_find(p, i), EINVAL);
+               t->extern_objs = calloc(p->n_extern_objs,
+                                       sizeof(struct extern_obj_runtime));
+               CHECK(t->extern_objs, ENOMEM);
 
-       p->in = calloc(p->n_ports_in, sizeof(struct port_in_runtime));
-       CHECK(p->in, ENOMEM);
+               TAILQ_FOREACH(obj, &p->extern_objs, node) {
+                       struct extern_obj_runtime *r =
+                               &t->extern_objs[obj->id];
+                       struct extern_type_member_func *func;
+                       uint32_t mailbox_size =
+                               obj->type->mailbox_struct_type->n_bits / 8;
 
-       TAILQ_FOREACH(port, &p->ports_in, node) {
-               struct port_in_runtime *in = &p->in[port->id];
+                       r->obj = obj->obj;
 
-               in->pkt_rx = port->type->ops.pkt_rx;
-               in->obj = port->obj;
+                       r->mailbox = calloc(1, mailbox_size);
+                       CHECK(r->mailbox, ENOMEM);
+
+                       TAILQ_FOREACH(func, &obj->type->funcs, node)
+                               r->funcs[func->id] = func->func;
+
+                       t->structs[obj->struct_id] = r->mailbox;
+               }
        }
 
        return 0;
 }
 
 static void
-port_in_build_free(struct rte_swx_pipeline *p)
+extern_obj_build_free(struct rte_swx_pipeline *p)
 {
-       free(p->in);
-       p->in = NULL;
+       uint32_t i;
+
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               uint32_t j;
+
+               if (!t->extern_objs)
+                       continue;
+
+               for (j = 0; j < p->n_extern_objs; j++) {
+                       struct extern_obj_runtime *r = &t->extern_objs[j];
+
+                       free(r->mailbox);
+               }
+
+               free(t->extern_objs);
+               t->extern_objs = NULL;
+       }
 }
 
 static void
-port_in_free(struct rte_swx_pipeline *p)
+extern_obj_free(struct rte_swx_pipeline *p)
 {
-       port_in_build_free(p);
+       extern_obj_build_free(p);
 
-       /* Input ports. */
+       /* Extern objects. */
        for ( ; ; ) {
-               struct port_in *port;
+               struct extern_obj *elem;
 
-               port = TAILQ_FIRST(&p->ports_in);
-               if (!port)
+               elem = TAILQ_FIRST(&p->extern_objs);
+               if (!elem)
                        break;
 
-               TAILQ_REMOVE(&p->ports_in, port, node);
-               port->type->ops.free(port->obj);
-               free(port);
+               TAILQ_REMOVE(&p->extern_objs, elem, node);
+               if (elem->obj)
+                       elem->type->destructor(elem->obj);
+               free(elem);
        }
 
-       /* Input port types. */
+       /* Extern types. */
        for ( ; ; ) {
-               struct port_in_type *elem;
+               struct extern_type *elem;
 
-               elem = TAILQ_FIRST(&p->port_in_types);
+               elem = TAILQ_FIRST(&p->extern_types);
                if (!elem)
                        break;
 
-               TAILQ_REMOVE(&p->port_in_types, elem, node);
+               TAILQ_REMOVE(&p->extern_types, elem, node);
+
+               for ( ; ; ) {
+                       struct extern_type_member_func *func;
+
+                       func = TAILQ_FIRST(&elem->funcs);
+                       if (!func)
+                               break;
+
+                       TAILQ_REMOVE(&elem->funcs, func, node);
+                       free(func);
+               }
+
                free(elem);
        }
 }
 
 /*
- * Output port.
+ * Extern function.
  */
-static struct port_out_type *
-port_out_type_find(struct rte_swx_pipeline *p, const char *name)
+static struct extern_func *
+extern_func_find(struct rte_swx_pipeline *p, const char *name)
 {
-       struct port_out_type *elem;
-
-       if (!name)
-               return NULL;
+       struct extern_func *elem;
 
-       TAILQ_FOREACH(elem, &p->port_out_types, node)
-               if (!strcmp(elem->name, name))
+       TAILQ_FOREACH(elem, &p->extern_funcs, node)
+               if (strcmp(elem->name, name) == 0)
                        return elem;
 
        return NULL;
 }
 
-int
-rte_swx_pipeline_port_out_type_register(struct rte_swx_pipeline *p,
-                                       const char *name,
-                                       struct rte_swx_port_out_ops *ops)
+static struct extern_func *
+extern_func_parse(struct rte_swx_pipeline *p,
+                 const char *name)
 {
-       struct port_out_type *elem;
+       if (name[0] != 'f' || name[1] != '.')
+               return NULL;
 
-       CHECK(p, EINVAL);
-       CHECK_NAME(name, EINVAL);
-       CHECK(ops, EINVAL);
-       CHECK(ops->create, EINVAL);
-       CHECK(ops->free, EINVAL);
-       CHECK(ops->pkt_tx, EINVAL);
-       CHECK(ops->stats_read, EINVAL);
+       return extern_func_find(p, &name[2]);
+}
 
-       CHECK(!port_out_type_find(p, name), EEXIST);
+static struct field *
+extern_func_mailbox_field_parse(struct rte_swx_pipeline *p,
+                               const char *name,
+                               struct extern_func **function)
+{
+       struct extern_func *func;
+       struct field *f;
+       char *func_name, *field_name;
 
-       /* Node allocation. */
-       elem = calloc(1, sizeof(struct port_out_type));
-       CHECK(elem, ENOMEM);
+       if ((name[0] != 'f') || (name[1] != '.'))
+               return NULL;
 
-       /* Node initialization. */
-       strcpy(elem->name, name);
-       memcpy(&elem->ops, ops, sizeof(*ops));
+       func_name = strdup(&name[2]);
+       if (!func_name)
+               return NULL;
 
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->port_out_types, elem, node);
+       field_name = strchr(func_name, '.');
+       if (!field_name) {
+               free(func_name);
+               return NULL;
+       }
 
-       return 0;
-}
+       *field_name = 0;
+       field_name++;
 
-static struct port_out *
-port_out_find(struct rte_swx_pipeline *p, uint32_t port_id)
-{
-       struct port_out *port;
+       func = extern_func_find(p, func_name);
+       if (!func) {
+               free(func_name);
+               return NULL;
+       }
 
-       TAILQ_FOREACH(port, &p->ports_out, node)
-               if (port->id == port_id)
-                       return port;
+       f = struct_type_field_find(func->mailbox_struct_type, field_name);
+       if (!f) {
+               free(func_name);
+               return NULL;
+       }
 
-       return NULL;
+       if (function)
+               *function = func;
+
+       free(func_name);
+       return f;
 }
 
 int
-rte_swx_pipeline_port_out_config(struct rte_swx_pipeline *p,
-                                uint32_t port_id,
-                                const char *port_type_name,
-                                void *args)
-{
-       struct port_out_type *type = NULL;
-       struct port_out *port = NULL;
-       void *obj = NULL;
+rte_swx_pipeline_extern_func_register(struct rte_swx_pipeline *p,
+                                     const char *name,
+                                     const char *mailbox_struct_type_name,
+                                     rte_swx_extern_func_t func)
+{
+       struct extern_func *f;
+       struct struct_type *mailbox_struct_type;
 
        CHECK(p, EINVAL);
 
-       CHECK(!port_out_find(p, port_id), EINVAL);
+       CHECK_NAME(name, EINVAL);
+       CHECK(!extern_func_find(p, name), EEXIST);
 
-       CHECK_NAME(port_type_name, EINVAL);
-       type = port_out_type_find(p, port_type_name);
-       CHECK(type, EINVAL);
+       CHECK_NAME(mailbox_struct_type_name, EINVAL);
+       mailbox_struct_type = struct_type_find(p, mailbox_struct_type_name);
+       CHECK(mailbox_struct_type, EINVAL);
+       CHECK(!mailbox_struct_type->var_size, EINVAL);
 
-       obj = type->ops.create(args);
-       CHECK(obj, ENODEV);
+       CHECK(func, EINVAL);
 
        /* Node allocation. */
-       port = calloc(1, sizeof(struct port_out));
-       CHECK(port, ENOMEM);
+       f = calloc(1, sizeof(struct extern_func));
+       CHECK(func, ENOMEM);
 
        /* Node initialization. */
-       port->type = type;
-       port->obj = obj;
-       port->id = port_id;
+       strcpy(f->name, name);
+       f->mailbox_struct_type = mailbox_struct_type;
+       f->func = func;
+       f->struct_id = p->n_structs;
+       f->id = p->n_extern_funcs;
 
        /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->ports_out, port, node);
-       if (p->n_ports_out < port_id + 1)
-               p->n_ports_out = port_id + 1;
+       TAILQ_INSERT_TAIL(&p->extern_funcs, f, node);
+       p->n_extern_funcs++;
+       p->n_structs++;
 
        return 0;
 }
 
 static int
-port_out_build(struct rte_swx_pipeline *p)
+extern_func_build(struct rte_swx_pipeline *p)
 {
-       struct port_out *port;
        uint32_t i;
 
-       CHECK(p->n_ports_out, EINVAL);
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               struct extern_func *func;
 
-       for (i = 0; i < p->n_ports_out; i++)
-               CHECK(port_out_find(p, i), EINVAL);
+               /* Memory allocation. */
+               t->extern_funcs = calloc(p->n_extern_funcs,
+                                        sizeof(struct extern_func_runtime));
+               CHECK(t->extern_funcs, ENOMEM);
 
-       p->out = calloc(p->n_ports_out, sizeof(struct port_out_runtime));
-       CHECK(p->out, ENOMEM);
+               /* Extern function. */
+               TAILQ_FOREACH(func, &p->extern_funcs, node) {
+                       struct extern_func_runtime *r =
+                               &t->extern_funcs[func->id];
+                       uint32_t mailbox_size =
+                               func->mailbox_struct_type->n_bits / 8;
 
-       TAILQ_FOREACH(port, &p->ports_out, node) {
-               struct port_out_runtime *out = &p->out[port->id];
+                       r->func = func->func;
 
-               out->pkt_tx = port->type->ops.pkt_tx;
-               out->flush = port->type->ops.flush;
-               out->obj = port->obj;
+                       r->mailbox = calloc(1, mailbox_size);
+                       CHECK(r->mailbox, ENOMEM);
+
+                       t->structs[func->struct_id] = r->mailbox;
+               }
        }
 
        return 0;
 }
 
 static void
-port_out_build_free(struct rte_swx_pipeline *p)
+extern_func_build_free(struct rte_swx_pipeline *p)
 {
-       free(p->out);
-       p->out = NULL;
-}
+       uint32_t i;
 
-static void
-port_out_free(struct rte_swx_pipeline *p)
-{
-       port_out_build_free(p);
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               uint32_t j;
 
-       /* Output ports. */
-       for ( ; ; ) {
-               struct port_out *port;
+               if (!t->extern_funcs)
+                       continue;
 
-               port = TAILQ_FIRST(&p->ports_out);
-               if (!port)
-                       break;
+               for (j = 0; j < p->n_extern_funcs; j++) {
+                       struct extern_func_runtime *r = &t->extern_funcs[j];
 
-               TAILQ_REMOVE(&p->ports_out, port, node);
-               port->type->ops.free(port->obj);
-               free(port);
+                       free(r->mailbox);
+               }
+
+               free(t->extern_funcs);
+               t->extern_funcs = NULL;
        }
+}
+
+static void
+extern_func_free(struct rte_swx_pipeline *p)
+{
+       extern_func_build_free(p);
 
-       /* Output port types. */
        for ( ; ; ) {
-               struct port_out_type *elem;
+               struct extern_func *elem;
 
-               elem = TAILQ_FIRST(&p->port_out_types);
+               elem = TAILQ_FIRST(&p->extern_funcs);
                if (!elem)
                        break;
 
-               TAILQ_REMOVE(&p->port_out_types, elem, node);
+               TAILQ_REMOVE(&p->extern_funcs, elem, node);
                free(elem);
        }
 }
 
 /*
- * Extern object.
+ * Header.
  */
-static struct extern_type *
-extern_type_find(struct rte_swx_pipeline *p, const char *name)
-{
-       struct extern_type *elem;
-
-       TAILQ_FOREACH(elem, &p->extern_types, node)
-               if (strcmp(elem->name, name) == 0)
-                       return elem;
-
-       return NULL;
-}
-
-static struct extern_type_member_func *
-extern_type_member_func_find(struct extern_type *type, const char *name)
+static struct header *
+header_find(struct rte_swx_pipeline *p, const char *name)
 {
-       struct extern_type_member_func *elem;
+       struct header *elem;
 
-       TAILQ_FOREACH(elem, &type->funcs, node)
+       TAILQ_FOREACH(elem, &p->headers, node)
                if (strcmp(elem->name, name) == 0)
                        return elem;
 
        return NULL;
 }
 
-static struct extern_obj *
-extern_obj_find(struct rte_swx_pipeline *p, const char *name)
+static struct header *
+header_find_by_struct_id(struct rte_swx_pipeline *p, uint32_t struct_id)
 {
-       struct extern_obj *elem;
+       struct header *elem;
 
-       TAILQ_FOREACH(elem, &p->extern_objs, node)
-               if (strcmp(elem->name, name) == 0)
+       TAILQ_FOREACH(elem, &p->headers, node)
+               if (elem->struct_id == struct_id)
                        return elem;
 
        return NULL;
 }
 
-static struct extern_type_member_func *
-extern_obj_member_func_parse(struct rte_swx_pipeline *p,
-                            const char *name,
-                            struct extern_obj **obj)
+static struct header *
+header_parse(struct rte_swx_pipeline *p,
+            const char *name)
 {
-       struct extern_obj *object;
-       struct extern_type_member_func *func;
-       char *object_name, *func_name;
-
-       if (name[0] != 'e' || name[1] != '.')
-               return NULL;
-
-       object_name = strdup(&name[2]);
-       if (!object_name)
-               return NULL;
-
-       func_name = strchr(object_name, '.');
-       if (!func_name) {
-               free(object_name);
-               return NULL;
-       }
-
-       *func_name = 0;
-       func_name++;
-
-       object = extern_obj_find(p, object_name);
-       if (!object) {
-               free(object_name);
-               return NULL;
-       }
-
-       func = extern_type_member_func_find(object->type, func_name);
-       if (!func) {
-               free(object_name);
+       if (name[0] != 'h' || name[1] != '.')
                return NULL;
-       }
-
-       if (obj)
-               *obj = object;
 
-       free(object_name);
-       return func;
+       return header_find(p, &name[2]);
 }
 
 static struct field *
-extern_obj_mailbox_field_parse(struct rte_swx_pipeline *p,
-                              const char *name,
-                              struct extern_obj **object)
+header_field_parse(struct rte_swx_pipeline *p,
+                  const char *name,
+                  struct header **header)
 {
-       struct extern_obj *obj;
+       struct header *h;
        struct field *f;
-       char *obj_name, *field_name;
+       char *header_name, *field_name;
 
-       if ((name[0] != 'e') || (name[1] != '.'))
+       if ((name[0] != 'h') || (name[1] != '.'))
                return NULL;
 
-       obj_name = strdup(&name[2]);
-       if (!obj_name)
+       header_name = strdup(&name[2]);
+       if (!header_name)
                return NULL;
 
-       field_name = strchr(obj_name, '.');
+       field_name = strchr(header_name, '.');
        if (!field_name) {
-               free(obj_name);
+               free(header_name);
                return NULL;
        }
 
        *field_name = 0;
        field_name++;
 
-       obj = extern_obj_find(p, obj_name);
-       if (!obj) {
-               free(obj_name);
+       h = header_find(p, header_name);
+       if (!h) {
+               free(header_name);
                return NULL;
        }
 
-       f = struct_type_field_find(obj->type->mailbox_struct_type, field_name);
+       f = struct_type_field_find(h->st, field_name);
        if (!f) {
-               free(obj_name);
+               free(header_name);
                return NULL;
        }
 
-       if (object)
-               *object = obj;
+       if (header)
+               *header = h;
 
-       free(obj_name);
+       free(header_name);
        return f;
 }
 
 int
-rte_swx_pipeline_extern_type_register(struct rte_swx_pipeline *p,
-       const char *name,
-       const char *mailbox_struct_type_name,
-       rte_swx_extern_type_constructor_t constructor,
-       rte_swx_extern_type_destructor_t destructor)
+rte_swx_pipeline_packet_header_register(struct rte_swx_pipeline *p,
+                                       const char *name,
+                                       const char *struct_type_name)
 {
-       struct extern_type *elem;
-       struct struct_type *mailbox_struct_type;
+       struct struct_type *st;
+       struct header *h;
+       size_t n_headers_max;
 
        CHECK(p, EINVAL);
-
        CHECK_NAME(name, EINVAL);
-       CHECK(!extern_type_find(p, name), EEXIST);
+       CHECK_NAME(struct_type_name, EINVAL);
 
-       CHECK_NAME(mailbox_struct_type_name, EINVAL);
-       mailbox_struct_type = struct_type_find(p, mailbox_struct_type_name);
-       CHECK(mailbox_struct_type, EINVAL);
+       CHECK(!header_find(p, name), EEXIST);
 
-       CHECK(constructor, EINVAL);
-       CHECK(destructor, EINVAL);
+       st = struct_type_find(p, struct_type_name);
+       CHECK(st, EINVAL);
 
-       /* Node allocation. */
-       elem = calloc(1, sizeof(struct extern_type));
-       CHECK(elem, ENOMEM);
-
-       /* Node initialization. */
-       strcpy(elem->name, name);
-       elem->mailbox_struct_type = mailbox_struct_type;
-       elem->constructor = constructor;
-       elem->destructor = destructor;
-       TAILQ_INIT(&elem->funcs);
-
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->extern_types, elem, node);
-
-       return 0;
-}
-
-int
-rte_swx_pipeline_extern_type_member_func_register(struct rte_swx_pipeline *p,
-       const char *extern_type_name,
-       const char *name,
-       rte_swx_extern_type_member_func_t member_func)
-{
-       struct extern_type *type;
-       struct extern_type_member_func *type_member;
-
-       CHECK(p, EINVAL);
-
-       CHECK_NAME(extern_type_name, EINVAL);
-       type = extern_type_find(p, extern_type_name);
-       CHECK(type, EINVAL);
-       CHECK(type->n_funcs < RTE_SWX_EXTERN_TYPE_MEMBER_FUNCS_MAX, ENOSPC);
-
-       CHECK_NAME(name, EINVAL);
-       CHECK(!extern_type_member_func_find(type, name), EEXIST);
-
-       CHECK(member_func, EINVAL);
-
-       /* Node allocation. */
-       type_member = calloc(1, sizeof(struct extern_type_member_func));
-       CHECK(type_member, ENOMEM);
-
-       /* Node initialization. */
-       strcpy(type_member->name, name);
-       type_member->func = member_func;
-       type_member->id = type->n_funcs;
-
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&type->funcs, type_member, node);
-       type->n_funcs++;
-
-       return 0;
-}
-
-int
-rte_swx_pipeline_extern_object_config(struct rte_swx_pipeline *p,
-                                     const char *extern_type_name,
-                                     const char *name,
-                                     const char *args)
-{
-       struct extern_type *type;
-       struct extern_obj *obj;
-       void *obj_handle;
-
-       CHECK(p, EINVAL);
-
-       CHECK_NAME(extern_type_name, EINVAL);
-       type = extern_type_find(p, extern_type_name);
-       CHECK(type, EINVAL);
-
-       CHECK_NAME(name, EINVAL);
-       CHECK(!extern_obj_find(p, name), EEXIST);
+       n_headers_max = RTE_SIZEOF_FIELD(struct thread, valid_headers) * 8;
+       CHECK(p->n_headers < n_headers_max, ENOSPC);
 
        /* Node allocation. */
-       obj = calloc(1, sizeof(struct extern_obj));
-       CHECK(obj, ENOMEM);
-
-       /* Object construction. */
-       obj_handle = type->constructor(args);
-       if (!obj_handle) {
-               free(obj);
-               CHECK(0, ENODEV);
-       }
+       h = calloc(1, sizeof(struct header));
+       CHECK(h, ENOMEM);
 
        /* Node initialization. */
-       strcpy(obj->name, name);
-       obj->type = type;
-       obj->obj = obj_handle;
-       obj->struct_id = p->n_structs;
-       obj->id = p->n_extern_objs;
+       strcpy(h->name, name);
+       h->st = st;
+       h->struct_id = p->n_structs;
+       h->id = p->n_headers;
 
        /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->extern_objs, obj, node);
-       p->n_extern_objs++;
+       TAILQ_INSERT_TAIL(&p->headers, h, node);
+       p->n_headers++;
        p->n_structs++;
 
        return 0;
 }
 
 static int
-extern_obj_build(struct rte_swx_pipeline *p)
+header_build(struct rte_swx_pipeline *p)
 {
-       uint32_t i;
+       struct header *h;
+       uint32_t n_bytes = 0, i;
+
+       TAILQ_FOREACH(h, &p->headers, node) {
+               n_bytes += h->st->n_bits / 8;
+       }
 
        for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
                struct thread *t = &p->threads[i];
-               struct extern_obj *obj;
+               uint32_t offset = 0;
 
-               t->extern_objs = calloc(p->n_extern_objs,
-                                       sizeof(struct extern_obj_runtime));
-               CHECK(t->extern_objs, ENOMEM);
+               t->headers = calloc(p->n_headers,
+                                   sizeof(struct header_runtime));
+               CHECK(t->headers, ENOMEM);
 
-               TAILQ_FOREACH(obj, &p->extern_objs, node) {
-                       struct extern_obj_runtime *r =
-                               &t->extern_objs[obj->id];
-                       struct extern_type_member_func *func;
-                       uint32_t mailbox_size =
-                               obj->type->mailbox_struct_type->n_bits / 8;
+               t->headers_out = calloc(p->n_headers,
+                                       sizeof(struct header_out_runtime));
+               CHECK(t->headers_out, ENOMEM);
 
-                       r->obj = obj->obj;
+               t->header_storage = calloc(1, n_bytes);
+               CHECK(t->header_storage, ENOMEM);
 
-                       r->mailbox = calloc(1, mailbox_size);
-                       CHECK(r->mailbox, ENOMEM);
+               t->header_out_storage = calloc(1, n_bytes);
+               CHECK(t->header_out_storage, ENOMEM);
 
-                       TAILQ_FOREACH(func, &obj->type->funcs, node)
-                               r->funcs[func->id] = func->func;
+               TAILQ_FOREACH(h, &p->headers, node) {
+                       uint8_t *header_storage;
+                       uint32_t n_bytes =  h->st->n_bits / 8;
 
-                       t->structs[obj->struct_id] = r->mailbox;
+                       header_storage = &t->header_storage[offset];
+                       offset += n_bytes;
+
+                       t->headers[h->id].ptr0 = header_storage;
+                       t->headers[h->id].n_bytes = n_bytes;
+
+                       t->structs[h->struct_id] = header_storage;
                }
        }
 
@@ -2126,912 +1246,705 @@ extern_obj_build(struct rte_swx_pipeline *p)
 }
 
 static void
-extern_obj_build_free(struct rte_swx_pipeline *p)
+header_build_free(struct rte_swx_pipeline *p)
 {
        uint32_t i;
 
        for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
                struct thread *t = &p->threads[i];
-               uint32_t j;
 
-               if (!t->extern_objs)
-                       continue;
+               free(t->headers_out);
+               t->headers_out = NULL;
 
-               for (j = 0; j < p->n_extern_objs; j++) {
-                       struct extern_obj_runtime *r = &t->extern_objs[j];
+               free(t->headers);
+               t->headers = NULL;
 
-                       free(r->mailbox);
-               }
+               free(t->header_out_storage);
+               t->header_out_storage = NULL;
 
-               free(t->extern_objs);
-               t->extern_objs = NULL;
+               free(t->header_storage);
+               t->header_storage = NULL;
        }
 }
 
 static void
-extern_obj_free(struct rte_swx_pipeline *p)
+header_free(struct rte_swx_pipeline *p)
 {
-       extern_obj_build_free(p);
-
-       /* Extern objects. */
-       for ( ; ; ) {
-               struct extern_obj *elem;
-
-               elem = TAILQ_FIRST(&p->extern_objs);
-               if (!elem)
-                       break;
-
-               TAILQ_REMOVE(&p->extern_objs, elem, node);
-               if (elem->obj)
-                       elem->type->destructor(elem->obj);
-               free(elem);
-       }
+       header_build_free(p);
 
-       /* Extern types. */
        for ( ; ; ) {
-               struct extern_type *elem;
+               struct header *elem;
 
-               elem = TAILQ_FIRST(&p->extern_types);
+               elem = TAILQ_FIRST(&p->headers);
                if (!elem)
                        break;
 
-               TAILQ_REMOVE(&p->extern_types, elem, node);
-
-               for ( ; ; ) {
-                       struct extern_type_member_func *func;
-
-                       func = TAILQ_FIRST(&elem->funcs);
-                       if (!func)
-                               break;
-
-                       TAILQ_REMOVE(&elem->funcs, func, node);
-                       free(func);
-               }
-
+               TAILQ_REMOVE(&p->headers, elem, node);
                free(elem);
        }
 }
 
 /*
- * Extern function.
+ * Meta-data.
  */
-static struct extern_func *
-extern_func_find(struct rte_swx_pipeline *p, const char *name)
+static struct field *
+metadata_field_parse(struct rte_swx_pipeline *p, const char *name)
 {
-       struct extern_func *elem;
+       if (!p->metadata_st)
+               return NULL;
 
-       TAILQ_FOREACH(elem, &p->extern_funcs, node)
-               if (strcmp(elem->name, name) == 0)
-                       return elem;
+       if (name[0] != 'm' || name[1] != '.')
+               return NULL;
 
-       return NULL;
+       return struct_type_field_find(p->metadata_st, &name[2]);
 }
 
-static struct extern_func *
-extern_func_parse(struct rte_swx_pipeline *p,
-                 const char *name)
+int
+rte_swx_pipeline_packet_metadata_register(struct rte_swx_pipeline *p,
+                                         const char *struct_type_name)
 {
-       if (name[0] != 'f' || name[1] != '.')
-               return NULL;
+       struct struct_type *st = NULL;
 
-       return extern_func_find(p, &name[2]);
+       CHECK(p, EINVAL);
+
+       CHECK_NAME(struct_type_name, EINVAL);
+       st  = struct_type_find(p, struct_type_name);
+       CHECK(st, EINVAL);
+       CHECK(!st->var_size, EINVAL);
+       CHECK(!p->metadata_st, EINVAL);
+
+       p->metadata_st = st;
+       p->metadata_struct_id = p->n_structs;
+
+       p->n_structs++;
+
+       return 0;
 }
 
-static struct field *
-extern_func_mailbox_field_parse(struct rte_swx_pipeline *p,
-                               const char *name,
-                               struct extern_func **function)
+static int
+metadata_build(struct rte_swx_pipeline *p)
 {
-       struct extern_func *func;
-       struct field *f;
-       char *func_name, *field_name;
+       uint32_t n_bytes = p->metadata_st->n_bits / 8;
+       uint32_t i;
 
-       if ((name[0] != 'f') || (name[1] != '.'))
-               return NULL;
+       /* Thread-level initialization. */
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               uint8_t *metadata;
 
-       func_name = strdup(&name[2]);
-       if (!func_name)
-               return NULL;
+               metadata = calloc(1, n_bytes);
+               CHECK(metadata, ENOMEM);
 
-       field_name = strchr(func_name, '.');
-       if (!field_name) {
-               free(func_name);
-               return NULL;
-       }
-
-       *field_name = 0;
-       field_name++;
-
-       func = extern_func_find(p, func_name);
-       if (!func) {
-               free(func_name);
-               return NULL;
-       }
-
-       f = struct_type_field_find(func->mailbox_struct_type, field_name);
-       if (!f) {
-               free(func_name);
-               return NULL;
-       }
-
-       if (function)
-               *function = func;
-
-       free(func_name);
-       return f;
-}
-
-int
-rte_swx_pipeline_extern_func_register(struct rte_swx_pipeline *p,
-                                     const char *name,
-                                     const char *mailbox_struct_type_name,
-                                     rte_swx_extern_func_t func)
-{
-       struct extern_func *f;
-       struct struct_type *mailbox_struct_type;
-
-       CHECK(p, EINVAL);
-
-       CHECK_NAME(name, EINVAL);
-       CHECK(!extern_func_find(p, name), EEXIST);
-
-       CHECK_NAME(mailbox_struct_type_name, EINVAL);
-       mailbox_struct_type = struct_type_find(p, mailbox_struct_type_name);
-       CHECK(mailbox_struct_type, EINVAL);
-
-       CHECK(func, EINVAL);
-
-       /* Node allocation. */
-       f = calloc(1, sizeof(struct extern_func));
-       CHECK(func, ENOMEM);
-
-       /* Node initialization. */
-       strcpy(f->name, name);
-       f->mailbox_struct_type = mailbox_struct_type;
-       f->func = func;
-       f->struct_id = p->n_structs;
-       f->id = p->n_extern_funcs;
-
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->extern_funcs, f, node);
-       p->n_extern_funcs++;
-       p->n_structs++;
-
-       return 0;
-}
-
-static int
-extern_func_build(struct rte_swx_pipeline *p)
-{
-       uint32_t i;
-
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
-               struct extern_func *func;
-
-               /* Memory allocation. */
-               t->extern_funcs = calloc(p->n_extern_funcs,
-                                        sizeof(struct extern_func_runtime));
-               CHECK(t->extern_funcs, ENOMEM);
-
-               /* Extern function. */
-               TAILQ_FOREACH(func, &p->extern_funcs, node) {
-                       struct extern_func_runtime *r =
-                               &t->extern_funcs[func->id];
-                       uint32_t mailbox_size =
-                               func->mailbox_struct_type->n_bits / 8;
-
-                       r->func = func->func;
-
-                       r->mailbox = calloc(1, mailbox_size);
-                       CHECK(r->mailbox, ENOMEM);
-
-                       t->structs[func->struct_id] = r->mailbox;
-               }
+               t->metadata = metadata;
+               t->structs[p->metadata_struct_id] = metadata;
        }
 
        return 0;
 }
 
 static void
-extern_func_build_free(struct rte_swx_pipeline *p)
+metadata_build_free(struct rte_swx_pipeline *p)
 {
        uint32_t i;
 
        for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
                struct thread *t = &p->threads[i];
-               uint32_t j;
-
-               if (!t->extern_funcs)
-                       continue;
-
-               for (j = 0; j < p->n_extern_funcs; j++) {
-                       struct extern_func_runtime *r = &t->extern_funcs[j];
-
-                       free(r->mailbox);
-               }
 
-               free(t->extern_funcs);
-               t->extern_funcs = NULL;
+               free(t->metadata);
+               t->metadata = NULL;
        }
 }
 
 static void
-extern_func_free(struct rte_swx_pipeline *p)
+metadata_free(struct rte_swx_pipeline *p)
 {
-       extern_func_build_free(p);
-
-       for ( ; ; ) {
-               struct extern_func *elem;
-
-               elem = TAILQ_FIRST(&p->extern_funcs);
-               if (!elem)
-                       break;
-
-               TAILQ_REMOVE(&p->extern_funcs, elem, node);
-               free(elem);
-       }
+       metadata_build_free(p);
 }
 
 /*
- * Header.
+ * Instruction.
  */
-static struct header *
-header_find(struct rte_swx_pipeline *p, const char *name)
+static int
+instruction_is_tx(enum instruction_type type)
 {
-       struct header *elem;
-
-       TAILQ_FOREACH(elem, &p->headers, node)
-               if (strcmp(elem->name, name) == 0)
-                       return elem;
+       switch (type) {
+       case INSTR_TX:
+       case INSTR_TX_I:
+               return 1;
 
-       return NULL;
+       default:
+               return 0;
+       }
 }
 
-static struct header *
-header_find_by_struct_id(struct rte_swx_pipeline *p, uint32_t struct_id)
+static int
+instruction_does_tx(struct instruction *instr)
 {
-       struct header *elem;
+       switch (instr->type) {
+       case INSTR_TX:
+       case INSTR_TX_I:
+       case INSTR_HDR_EMIT_TX:
+       case INSTR_HDR_EMIT2_TX:
+       case INSTR_HDR_EMIT3_TX:
+       case INSTR_HDR_EMIT4_TX:
+       case INSTR_HDR_EMIT5_TX:
+       case INSTR_HDR_EMIT6_TX:
+       case INSTR_HDR_EMIT7_TX:
+       case INSTR_HDR_EMIT8_TX:
+               return 1;
+       default:
+               return 0;
+       }
+}
 
-       TAILQ_FOREACH(elem, &p->headers, node)
-               if (elem->struct_id == struct_id)
-                       return elem;
+static int
+instruction_is_jmp(struct instruction *instr)
+{
+       switch (instr->type) {
+       case INSTR_JMP:
+       case INSTR_JMP_VALID:
+       case INSTR_JMP_INVALID:
+       case INSTR_JMP_HIT:
+       case INSTR_JMP_MISS:
+       case INSTR_JMP_ACTION_HIT:
+       case INSTR_JMP_ACTION_MISS:
+       case INSTR_JMP_EQ:
+       case INSTR_JMP_EQ_MH:
+       case INSTR_JMP_EQ_HM:
+       case INSTR_JMP_EQ_HH:
+       case INSTR_JMP_EQ_I:
+       case INSTR_JMP_NEQ:
+       case INSTR_JMP_NEQ_MH:
+       case INSTR_JMP_NEQ_HM:
+       case INSTR_JMP_NEQ_HH:
+       case INSTR_JMP_NEQ_I:
+       case INSTR_JMP_LT:
+       case INSTR_JMP_LT_MH:
+       case INSTR_JMP_LT_HM:
+       case INSTR_JMP_LT_HH:
+       case INSTR_JMP_LT_MI:
+       case INSTR_JMP_LT_HI:
+       case INSTR_JMP_GT:
+       case INSTR_JMP_GT_MH:
+       case INSTR_JMP_GT_HM:
+       case INSTR_JMP_GT_HH:
+       case INSTR_JMP_GT_MI:
+       case INSTR_JMP_GT_HI:
+               return 1;
 
-       return NULL;
+       default:
+               return 0;
+       }
 }
 
-static struct header *
-header_parse(struct rte_swx_pipeline *p,
-            const char *name)
+static int
+instruction_does_thread_yield(struct instruction *instr)
 {
-       if (name[0] != 'h' || name[1] != '.')
-               return NULL;
-
-       return header_find(p, &name[2]);
+       switch (instr->type) {
+       case INSTR_RX:
+       case INSTR_TABLE:
+       case INSTR_TABLE_AF:
+       case INSTR_SELECTOR:
+       case INSTR_LEARNER:
+       case INSTR_LEARNER_AF:
+       case INSTR_EXTERN_OBJ:
+       case INSTR_EXTERN_FUNC:
+               return 1;
+       default:
+               return 0;
+       }
 }
 
 static struct field *
-header_field_parse(struct rte_swx_pipeline *p,
+action_field_parse(struct action *action, const char *name);
+
+static struct field *
+struct_field_parse(struct rte_swx_pipeline *p,
+                  struct action *action,
                   const char *name,
-                  struct header **header)
+                  uint32_t *struct_id)
 {
-       struct header *h;
        struct field *f;
-       char *header_name, *field_name;
 
-       if ((name[0] != 'h') || (name[1] != '.'))
-               return NULL;
+       switch (name[0]) {
+       case 'h':
+       {
+               struct header *header;
 
-       header_name = strdup(&name[2]);
-       if (!header_name)
-               return NULL;
+               f = header_field_parse(p, name, &header);
+               if (!f)
+                       return NULL;
 
-       field_name = strchr(header_name, '.');
-       if (!field_name) {
-               free(header_name);
-               return NULL;
+               *struct_id = header->struct_id;
+               return f;
        }
 
-       *field_name = 0;
-       field_name++;
+       case 'm':
+       {
+               f = metadata_field_parse(p, name);
+               if (!f)
+                       return NULL;
 
-       h = header_find(p, header_name);
-       if (!h) {
-               free(header_name);
-               return NULL;
+               *struct_id = p->metadata_struct_id;
+               return f;
        }
 
-       f = struct_type_field_find(h->st, field_name);
-       if (!f) {
-               free(header_name);
-               return NULL;
-       }
-
-       if (header)
-               *header = h;
-
-       free(header_name);
-       return f;
-}
+       case 't':
+       {
+               if (!action)
+                       return NULL;
 
-int
-rte_swx_pipeline_packet_header_register(struct rte_swx_pipeline *p,
-                                       const char *name,
-                                       const char *struct_type_name)
-{
-       struct struct_type *st;
-       struct header *h;
-       size_t n_headers_max;
+               f = action_field_parse(action, name);
+               if (!f)
+                       return NULL;
 
-       CHECK(p, EINVAL);
-       CHECK_NAME(name, EINVAL);
-       CHECK_NAME(struct_type_name, EINVAL);
+               *struct_id = 0;
+               return f;
+       }
 
-       CHECK(!header_find(p, name), EEXIST);
+       case 'e':
+       {
+               struct extern_obj *obj;
 
-       st = struct_type_find(p, struct_type_name);
-       CHECK(st, EINVAL);
+               f = extern_obj_mailbox_field_parse(p, name, &obj);
+               if (!f)
+                       return NULL;
 
-       n_headers_max = RTE_SIZEOF_FIELD(struct thread, valid_headers) * 8;
-       CHECK(p->n_headers < n_headers_max, ENOSPC);
+               *struct_id = obj->struct_id;
+               return f;
+       }
 
-       /* Node allocation. */
-       h = calloc(1, sizeof(struct header));
-       CHECK(h, ENOMEM);
+       case 'f':
+       {
+               struct extern_func *func;
 
-       /* Node initialization. */
-       strcpy(h->name, name);
-       h->st = st;
-       h->struct_id = p->n_structs;
-       h->id = p->n_headers;
+               f = extern_func_mailbox_field_parse(p, name, &func);
+               if (!f)
+                       return NULL;
 
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->headers, h, node);
-       p->n_headers++;
-       p->n_structs++;
+               *struct_id = func->struct_id;
+               return f;
+       }
 
-       return 0;
+       default:
+               return NULL;
+       }
 }
 
+/*
+ * rx.
+ */
 static int
-header_build(struct rte_swx_pipeline *p)
+instr_rx_translate(struct rte_swx_pipeline *p,
+                  struct action *action,
+                  char **tokens,
+                  int n_tokens,
+                  struct instruction *instr,
+                  struct instruction_data *data __rte_unused)
 {
-       struct header *h;
-       uint32_t n_bytes = 0, i;
-
-       TAILQ_FOREACH(h, &p->headers, node) {
-               n_bytes += h->st->n_bits / 8;
-       }
-
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
-               uint32_t offset = 0;
-
-               t->headers = calloc(p->n_headers,
-                                   sizeof(struct header_runtime));
-               CHECK(t->headers, ENOMEM);
-
-               t->headers_out = calloc(p->n_headers,
-                                       sizeof(struct header_out_runtime));
-               CHECK(t->headers_out, ENOMEM);
+       struct field *f;
 
-               t->header_storage = calloc(1, n_bytes);
-               CHECK(t->header_storage, ENOMEM);
+       CHECK(!action, EINVAL);
+       CHECK(n_tokens == 2, EINVAL);
 
-               t->header_out_storage = calloc(1, n_bytes);
-               CHECK(t->header_out_storage, ENOMEM);
+       f = metadata_field_parse(p, tokens[1]);
+       CHECK(f, EINVAL);
 
-               TAILQ_FOREACH(h, &p->headers, node) {
-                       uint8_t *header_storage;
-                       uint32_t n_bytes =  h->st->n_bits / 8;
+       instr->type = INSTR_RX;
+       instr->io.io.offset = f->offset / 8;
+       instr->io.io.n_bits = f->n_bits;
+       return 0;
+}
 
-                       header_storage = &t->header_storage[offset];
-                       offset += n_bytes;
+/*
+ * tx.
+ */
+static int
+instr_tx_translate(struct rte_swx_pipeline *p,
+                  struct action *action __rte_unused,
+                  char **tokens,
+                  int n_tokens,
+                  struct instruction *instr,
+                  struct instruction_data *data __rte_unused)
+{
+       char *port = tokens[1];
+       struct field *f;
+       uint32_t port_val;
 
-                       t->headers[h->id].ptr0 = header_storage;
-                       t->headers[h->id].n_bytes = n_bytes;
+       CHECK(n_tokens == 2, EINVAL);
 
-                       t->structs[h->struct_id] = header_storage;
-               }
+       f = metadata_field_parse(p, port);
+       if (f) {
+               instr->type = INSTR_TX;
+               instr->io.io.offset = f->offset / 8;
+               instr->io.io.n_bits = f->n_bits;
+               return 0;
        }
 
+       /* TX_I. */
+       port_val = strtoul(port, &port, 0);
+       CHECK(!port[0], EINVAL);
+
+       instr->type = INSTR_TX_I;
+       instr->io.io.val = port_val;
        return 0;
 }
 
-static void
-header_build_free(struct rte_swx_pipeline *p)
+static int
+instr_drop_translate(struct rte_swx_pipeline *p,
+                    struct action *action __rte_unused,
+                    char **tokens __rte_unused,
+                    int n_tokens,
+                    struct instruction *instr,
+                    struct instruction_data *data __rte_unused)
 {
-       uint32_t i;
-
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
+       CHECK(n_tokens == 1, EINVAL);
 
-               free(t->headers_out);
-               t->headers_out = NULL;
+       /* TX_I. */
+       instr->type = INSTR_TX_I;
+       instr->io.io.val = p->n_ports_out - 1;
+       return 0;
+}
 
-               free(t->headers);
-               t->headers = NULL;
+static inline void
+instr_tx_exec(struct rte_swx_pipeline *p)
+{
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-               free(t->header_out_storage);
-               t->header_out_storage = NULL;
+       __instr_tx_exec(p, t, ip);
 
-               free(t->header_storage);
-               t->header_storage = NULL;
-       }
+       /* Thread. */
+       thread_ip_reset(p, t);
+       instr_rx_exec(p);
 }
 
-static void
-header_free(struct rte_swx_pipeline *p)
+static inline void
+instr_tx_i_exec(struct rte_swx_pipeline *p)
 {
-       header_build_free(p);
-
-       for ( ; ; ) {
-               struct header *elem;
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-               elem = TAILQ_FIRST(&p->headers);
-               if (!elem)
-                       break;
+       __instr_tx_i_exec(p, t, ip);
 
-               TAILQ_REMOVE(&p->headers, elem, node);
-               free(elem);
-       }
+       /* Thread. */
+       thread_ip_reset(p, t);
+       instr_rx_exec(p);
 }
 
 /*
- * Meta-data.
+ * extract.
  */
-static struct field *
-metadata_field_parse(struct rte_swx_pipeline *p, const char *name)
+static int
+instr_hdr_extract_translate(struct rte_swx_pipeline *p,
+                           struct action *action,
+                           char **tokens,
+                           int n_tokens,
+                           struct instruction *instr,
+                           struct instruction_data *data __rte_unused)
 {
-       if (!p->metadata_st)
-               return NULL;
+       struct header *h;
 
-       if (name[0] != 'm' || name[1] != '.')
-               return NULL;
+       CHECK(!action, EINVAL);
+       CHECK((n_tokens == 2) || (n_tokens == 3), EINVAL);
 
-       return struct_type_field_find(p->metadata_st, &name[2]);
-}
+       h = header_parse(p, tokens[1]);
+       CHECK(h, EINVAL);
 
-int
-rte_swx_pipeline_packet_metadata_register(struct rte_swx_pipeline *p,
-                                         const char *struct_type_name)
-{
-       struct struct_type *st = NULL;
+       if (n_tokens == 2) {
+               CHECK(!h->st->var_size, EINVAL);
 
-       CHECK(p, EINVAL);
+               instr->type = INSTR_HDR_EXTRACT;
+               instr->io.hdr.header_id[0] = h->id;
+               instr->io.hdr.struct_id[0] = h->struct_id;
+               instr->io.hdr.n_bytes[0] = h->st->n_bits / 8;
+       } else {
+               struct field *mf;
 
-       CHECK_NAME(struct_type_name, EINVAL);
-       st  = struct_type_find(p, struct_type_name);
-       CHECK(st, EINVAL);
-       CHECK(!p->metadata_st, EINVAL);
+               CHECK(h->st->var_size, EINVAL);
 
-       p->metadata_st = st;
-       p->metadata_struct_id = p->n_structs;
+               mf = metadata_field_parse(p, tokens[2]);
+               CHECK(mf, EINVAL);
+               CHECK(!mf->var_size, EINVAL);
 
-       p->n_structs++;
+               instr->type = INSTR_HDR_EXTRACT_M;
+               instr->io.io.offset = mf->offset / 8;
+               instr->io.io.n_bits = mf->n_bits;
+               instr->io.hdr.header_id[0] = h->id;
+               instr->io.hdr.struct_id[0] = h->struct_id;
+               instr->io.hdr.n_bytes[0] = h->st->n_bits_min / 8;
+       }
 
        return 0;
 }
 
 static int
-metadata_build(struct rte_swx_pipeline *p)
+instr_hdr_lookahead_translate(struct rte_swx_pipeline *p,
+                             struct action *action,
+                             char **tokens,
+                             int n_tokens,
+                             struct instruction *instr,
+                             struct instruction_data *data __rte_unused)
 {
-       uint32_t n_bytes = p->metadata_st->n_bits / 8;
-       uint32_t i;
+       struct header *h;
 
-       /* Thread-level initialization. */
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
-               uint8_t *metadata;
+       CHECK(!action, EINVAL);
+       CHECK(n_tokens == 2, EINVAL);
 
-               metadata = calloc(1, n_bytes);
-               CHECK(metadata, ENOMEM);
+       h = header_parse(p, tokens[1]);
+       CHECK(h, EINVAL);
+       CHECK(!h->st->var_size, EINVAL);
 
-               t->metadata = metadata;
-               t->structs[p->metadata_struct_id] = metadata;
-       }
+       instr->type = INSTR_HDR_LOOKAHEAD;
+       instr->io.hdr.header_id[0] = h->id;
+       instr->io.hdr.struct_id[0] = h->struct_id;
+       instr->io.hdr.n_bytes[0] = 0; /* Unused. */
 
        return 0;
 }
 
-static void
-metadata_build_free(struct rte_swx_pipeline *p)
+static inline void
+instr_hdr_extract_exec(struct rte_swx_pipeline *p)
 {
-       uint32_t i;
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
+       __instr_hdr_extract_exec(p, t, ip);
 
-               free(t->metadata);
-               t->metadata = NULL;
-       }
+       /* Thread. */
+       thread_ip_inc(p);
 }
 
-static void
-metadata_free(struct rte_swx_pipeline *p)
+static inline void
+instr_hdr_extract2_exec(struct rte_swx_pipeline *p)
 {
-       metadata_build_free(p);
-}
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-/*
- * Instruction.
- */
-static int
-instruction_is_tx(enum instruction_type type)
-{
-       switch (type) {
-       case INSTR_TX:
-       case INSTR_TX_I:
-               return 1;
+       __instr_hdr_extract2_exec(p, t, ip);
 
-       default:
-               return 0;
-       }
+       /* Thread. */
+       thread_ip_inc(p);
 }
 
-static int
-instruction_is_jmp(struct instruction *instr)
+static inline void
+instr_hdr_extract3_exec(struct rte_swx_pipeline *p)
 {
-       switch (instr->type) {
-       case INSTR_JMP:
-       case INSTR_JMP_VALID:
-       case INSTR_JMP_INVALID:
-       case INSTR_JMP_HIT:
-       case INSTR_JMP_MISS:
-       case INSTR_JMP_ACTION_HIT:
-       case INSTR_JMP_ACTION_MISS:
-       case INSTR_JMP_EQ:
-       case INSTR_JMP_EQ_MH:
-       case INSTR_JMP_EQ_HM:
-       case INSTR_JMP_EQ_HH:
-       case INSTR_JMP_EQ_I:
-       case INSTR_JMP_NEQ:
-       case INSTR_JMP_NEQ_MH:
-       case INSTR_JMP_NEQ_HM:
-       case INSTR_JMP_NEQ_HH:
-       case INSTR_JMP_NEQ_I:
-       case INSTR_JMP_LT:
-       case INSTR_JMP_LT_MH:
-       case INSTR_JMP_LT_HM:
-       case INSTR_JMP_LT_HH:
-       case INSTR_JMP_LT_MI:
-       case INSTR_JMP_LT_HI:
-       case INSTR_JMP_GT:
-       case INSTR_JMP_GT_MH:
-       case INSTR_JMP_GT_HM:
-       case INSTR_JMP_GT_HH:
-       case INSTR_JMP_GT_MI:
-       case INSTR_JMP_GT_HI:
-               return 1;
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       default:
-               return 0;
-       }
-}
+       __instr_hdr_extract3_exec(p, t, ip);
 
-static struct field *
-action_field_parse(struct action *action, const char *name);
+       /* Thread. */
+       thread_ip_inc(p);
+}
 
-static struct field *
-struct_field_parse(struct rte_swx_pipeline *p,
-                  struct action *action,
-                  const char *name,
-                  uint32_t *struct_id)
+static inline void
+instr_hdr_extract4_exec(struct rte_swx_pipeline *p)
 {
-       struct field *f;
-
-       switch (name[0]) {
-       case 'h':
-       {
-               struct header *header;
-
-               f = header_field_parse(p, name, &header);
-               if (!f)
-                       return NULL;
-
-               *struct_id = header->struct_id;
-               return f;
-       }
-
-       case 'm':
-       {
-               f = metadata_field_parse(p, name);
-               if (!f)
-                       return NULL;
-
-               *struct_id = p->metadata_struct_id;
-               return f;
-       }
-
-       case 't':
-       {
-               if (!action)
-                       return NULL;
-
-               f = action_field_parse(action, name);
-               if (!f)
-                       return NULL;
-
-               *struct_id = 0;
-               return f;
-       }
-
-       case 'e':
-       {
-               struct extern_obj *obj;
-
-               f = extern_obj_mailbox_field_parse(p, name, &obj);
-               if (!f)
-                       return NULL;
-
-               *struct_id = obj->struct_id;
-               return f;
-       }
-
-       case 'f':
-       {
-               struct extern_func *func;
-
-               f = extern_func_mailbox_field_parse(p, name, &func);
-               if (!f)
-                       return NULL;
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-               *struct_id = func->struct_id;
-               return f;
-       }
+       __instr_hdr_extract4_exec(p, t, ip);
 
-       default:
-               return NULL;
-       }
+       /* Thread. */
+       thread_ip_inc(p);
 }
 
 static inline void
-pipeline_port_inc(struct rte_swx_pipeline *p)
+instr_hdr_extract5_exec(struct rte_swx_pipeline *p)
 {
-       p->port_id = (p->port_id + 1) & (p->n_ports_in - 1);
-}
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-static inline void
-thread_ip_reset(struct rte_swx_pipeline *p, struct thread *t)
-{
-       t->ip = p->instructions;
-}
+       __instr_hdr_extract5_exec(p, t, ip);
 
-static inline void
-thread_ip_set(struct thread *t, struct instruction *ip)
-{
-       t->ip = ip;
+       /* Thread. */
+       thread_ip_inc(p);
 }
 
 static inline void
-thread_ip_action_call(struct rte_swx_pipeline *p,
-                     struct thread *t,
-                     uint32_t action_id)
+instr_hdr_extract6_exec(struct rte_swx_pipeline *p)
 {
-       t->ret = t->ip + 1;
-       t->ip = p->action_instructions[action_id];
-}
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-static inline void
-thread_ip_inc(struct rte_swx_pipeline *p);
+       __instr_hdr_extract6_exec(p, t, ip);
+
+       /* Thread. */
+       thread_ip_inc(p);
+}
 
 static inline void
-thread_ip_inc(struct rte_swx_pipeline *p)
+instr_hdr_extract7_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+
+       __instr_hdr_extract7_exec(p, t, ip);
 
-       t->ip++;
+       /* Thread. */
+       thread_ip_inc(p);
 }
 
 static inline void
-thread_ip_inc_cond(struct thread *t, int cond)
+instr_hdr_extract8_exec(struct rte_swx_pipeline *p)
 {
-       t->ip += cond;
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+
+       __instr_hdr_extract8_exec(p, t, ip);
+
+       /* Thread. */
+       thread_ip_inc(p);
 }
 
 static inline void
-thread_yield(struct rte_swx_pipeline *p)
+instr_hdr_extract_m_exec(struct rte_swx_pipeline *p)
 {
-       p->thread_id = (p->thread_id + 1) & (RTE_SWX_PIPELINE_THREADS_MAX - 1);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+
+       __instr_hdr_extract_m_exec(p, t, ip);
+
+       /* Thread. */
+       thread_ip_inc(p);
 }
 
 static inline void
-thread_yield_cond(struct rte_swx_pipeline *p, int cond)
+instr_hdr_lookahead_exec(struct rte_swx_pipeline *p)
 {
-       p->thread_id = (p->thread_id + cond) & (RTE_SWX_PIPELINE_THREADS_MAX - 1);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+
+       __instr_hdr_lookahead_exec(p, t, ip);
+
+       /* Thread. */
+       thread_ip_inc(p);
 }
 
 /*
- * rx.
+ * emit.
  */
 static int
-instr_rx_translate(struct rte_swx_pipeline *p,
-                  struct action *action,
-                  char **tokens,
-                  int n_tokens,
-                  struct instruction *instr,
-                  struct instruction_data *data __rte_unused)
+instr_hdr_emit_translate(struct rte_swx_pipeline *p,
+                        struct action *action __rte_unused,
+                        char **tokens,
+                        int n_tokens,
+                        struct instruction *instr,
+                        struct instruction_data *data __rte_unused)
 {
-       struct field *f;
+       struct header *h;
 
-       CHECK(!action, EINVAL);
        CHECK(n_tokens == 2, EINVAL);
 
-       f = metadata_field_parse(p, tokens[1]);
-       CHECK(f, EINVAL);
+       h = header_parse(p, tokens[1]);
+       CHECK(h, EINVAL);
 
-       instr->type = INSTR_RX;
-       instr->io.io.offset = f->offset / 8;
-       instr->io.io.n_bits = f->n_bits;
+       instr->type = INSTR_HDR_EMIT;
+       instr->io.hdr.header_id[0] = h->id;
+       instr->io.hdr.struct_id[0] = h->struct_id;
+       instr->io.hdr.n_bytes[0] = h->st->n_bits / 8;
        return 0;
 }
 
 static inline void
-instr_rx_exec(struct rte_swx_pipeline *p);
+instr_hdr_emit_exec(struct rte_swx_pipeline *p)
+{
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+
+       __instr_hdr_emit_exec(p, t, ip);
+
+       /* Thread. */
+       thread_ip_inc(p);
+}
 
 static inline void
-instr_rx_exec(struct rte_swx_pipeline *p)
+instr_hdr_emit_tx_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct port_in_runtime *port = &p->in[p->port_id];
-       struct rte_swx_pkt *pkt = &t->pkt;
-       int pkt_received;
-
-       /* Packet. */
-       pkt_received = port->pkt_rx(port->obj, pkt);
-       t->ptr = &pkt->pkt[pkt->offset];
-       rte_prefetch0(t->ptr);
 
-       TRACE("[Thread %2u] rx %s from port %u\n",
-             p->thread_id,
-             pkt_received ? "1 pkt" : "0 pkts",
-             p->port_id);
+       __instr_hdr_emit_tx_exec(p, t, ip);
 
-       /* Headers. */
-       t->valid_headers = 0;
-       t->n_headers_out = 0;
+       /* Thread. */
+       thread_ip_reset(p, t);
+       instr_rx_exec(p);
+}
 
-       /* Meta-data. */
-       METADATA_WRITE(t, ip->io.io.offset, ip->io.io.n_bits, p->port_id);
+static inline void
+instr_hdr_emit2_tx_exec(struct rte_swx_pipeline *p)
+{
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       /* Tables. */
-       t->table_state = p->table_state;
+       __instr_hdr_emit2_tx_exec(p, t, ip);
 
        /* Thread. */
-       pipeline_port_inc(p);
-       thread_ip_inc_cond(t, pkt_received);
-       thread_yield(p);
+       thread_ip_reset(p, t);
+       instr_rx_exec(p);
 }
 
-/*
- * tx.
- */
-static int
-instr_tx_translate(struct rte_swx_pipeline *p,
-                  struct action *action __rte_unused,
-                  char **tokens,
-                  int n_tokens,
-                  struct instruction *instr,
-                  struct instruction_data *data __rte_unused)
+static inline void
+instr_hdr_emit3_tx_exec(struct rte_swx_pipeline *p)
 {
-       char *port = tokens[1];
-       struct field *f;
-       uint32_t port_val;
-
-       CHECK(n_tokens == 2, EINVAL);
-
-       f = metadata_field_parse(p, port);
-       if (f) {
-               instr->type = INSTR_TX;
-               instr->io.io.offset = f->offset / 8;
-               instr->io.io.n_bits = f->n_bits;
-               return 0;
-       }
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       /* TX_I. */
-       port_val = strtoul(port, &port, 0);
-       CHECK(!port[0], EINVAL);
+       __instr_hdr_emit3_tx_exec(p, t, ip);
 
-       instr->type = INSTR_TX_I;
-       instr->io.io.val = port_val;
-       return 0;
+       /* Thread. */
+       thread_ip_reset(p, t);
+       instr_rx_exec(p);
 }
 
-static int
-instr_drop_translate(struct rte_swx_pipeline *p,
-                    struct action *action __rte_unused,
-                    char **tokens __rte_unused,
-                    int n_tokens,
-                    struct instruction *instr,
-                    struct instruction_data *data __rte_unused)
+static inline void
+instr_hdr_emit4_tx_exec(struct rte_swx_pipeline *p)
 {
-       CHECK(n_tokens == 1, EINVAL);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       /* TX_I. */
-       instr->type = INSTR_TX_I;
-       instr->io.io.val = p->n_ports_out - 1;
-       return 0;
+       __instr_hdr_emit4_tx_exec(p, t, ip);
+
+       /* Thread. */
+       thread_ip_reset(p, t);
+       instr_rx_exec(p);
 }
 
 static inline void
-emit_handler(struct thread *t)
+instr_hdr_emit5_tx_exec(struct rte_swx_pipeline *p)
 {
-       struct header_out_runtime *h0 = &t->headers_out[0];
-       struct header_out_runtime *h1 = &t->headers_out[1];
-       uint32_t offset = 0, i;
-
-       /* No header change or header decapsulation. */
-       if ((t->n_headers_out == 1) &&
-           (h0->ptr + h0->n_bytes == t->ptr)) {
-               TRACE("Emit handler: no header change or header decap.\n");
-
-               t->pkt.offset -= h0->n_bytes;
-               t->pkt.length += h0->n_bytes;
-
-               return;
-       }
-
-       /* Header encapsulation (optionally, with prior header decasulation). */
-       if ((t->n_headers_out == 2) &&
-           (h1->ptr + h1->n_bytes == t->ptr) &&
-           (h0->ptr == h0->ptr0)) {
-               uint32_t offset;
-
-               TRACE("Emit handler: header encapsulation.\n");
-
-               offset = h0->n_bytes + h1->n_bytes;
-               memcpy(t->ptr - offset, h0->ptr, h0->n_bytes);
-               t->pkt.offset -= offset;
-               t->pkt.length += offset;
-
-               return;
-       }
-
-       /* Header insertion. */
-       /* TBD */
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       /* Header extraction. */
-       /* TBD */
+       __instr_hdr_emit5_tx_exec(p, t, ip);
 
-       /* For any other case. */
-       TRACE("Emit handler: complex case.\n");
+       /* Thread. */
+       thread_ip_reset(p, t);
+       instr_rx_exec(p);
+}
 
-       for (i = 0; i < t->n_headers_out; i++) {
-               struct header_out_runtime *h = &t->headers_out[i];
+static inline void
+instr_hdr_emit6_tx_exec(struct rte_swx_pipeline *p)
+{
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-               memcpy(&t->header_out_storage[offset], h->ptr, h->n_bytes);
-               offset += h->n_bytes;
-       }
+       __instr_hdr_emit6_tx_exec(p, t, ip);
 
-       if (offset) {
-               memcpy(t->ptr - offset, t->header_out_storage, offset);
-               t->pkt.offset -= offset;
-               t->pkt.length += offset;
-       }
+       /* Thread. */
+       thread_ip_reset(p, t);
+       instr_rx_exec(p);
 }
 
 static inline void
-instr_tx_exec(struct rte_swx_pipeline *p);
-
-static inline void
-instr_tx_exec(struct rte_swx_pipeline *p)
+instr_hdr_emit7_tx_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t port_id = METADATA_READ(t, ip->io.io.offset, ip->io.io.n_bits);
-       struct port_out_runtime *port = &p->out[port_id];
-       struct rte_swx_pkt *pkt = &t->pkt;
 
-       TRACE("[Thread %2u]: tx 1 pkt to port %u\n",
-             p->thread_id,
-             (uint32_t)port_id);
-
-       /* Headers. */
-       emit_handler(t);
-
-       /* Packet. */
-       port->pkt_tx(port->obj, pkt);
+       __instr_hdr_emit7_tx_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_reset(p, t);
@@ -3039,23 +1952,12 @@ instr_tx_exec(struct rte_swx_pipeline *p)
 }
 
 static inline void
-instr_tx_i_exec(struct rte_swx_pipeline *p)
+instr_hdr_emit8_tx_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t port_id = ip->io.io.val;
-       struct port_out_runtime *port = &p->out[port_id];
-       struct rte_swx_pkt *pkt = &t->pkt;
-
-       TRACE("[Thread %2u]: tx (i) 1 pkt to port %u\n",
-             p->thread_id,
-             (uint32_t)port_id);
-
-       /* Headers. */
-       emit_handler(t);
 
-       /* Packet. */
-       port->pkt_tx(port->obj, pkt);
+       __instr_hdr_emit8_tx_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_reset(p, t);
@@ -3063,474 +1965,179 @@ instr_tx_i_exec(struct rte_swx_pipeline *p)
 }
 
 /*
- * extract.
+ * validate.
  */
 static int
-instr_hdr_extract_translate(struct rte_swx_pipeline *p,
-                           struct action *action,
-                           char **tokens,
-                           int n_tokens,
-                           struct instruction *instr,
-                           struct instruction_data *data __rte_unused)
+instr_hdr_validate_translate(struct rte_swx_pipeline *p,
+                            struct action *action __rte_unused,
+                            char **tokens,
+                            int n_tokens,
+                            struct instruction *instr,
+                            struct instruction_data *data __rte_unused)
 {
        struct header *h;
 
-       CHECK(!action, EINVAL);
        CHECK(n_tokens == 2, EINVAL);
 
        h = header_parse(p, tokens[1]);
        CHECK(h, EINVAL);
 
-       instr->type = INSTR_HDR_EXTRACT;
-       instr->io.hdr.header_id[0] = h->id;
-       instr->io.hdr.struct_id[0] = h->struct_id;
-       instr->io.hdr.n_bytes[0] = h->st->n_bits / 8;
+       instr->type = INSTR_HDR_VALIDATE;
+       instr->valid.header_id = h->id;
        return 0;
 }
 
 static inline void
-__instr_hdr_extract_exec(struct rte_swx_pipeline *p, uint32_t n_extract);
-
-static inline void
-__instr_hdr_extract_exec(struct rte_swx_pipeline *p, uint32_t n_extract)
+instr_hdr_validate_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t valid_headers = t->valid_headers;
-       uint8_t *ptr = t->ptr;
-       uint32_t offset = t->pkt.offset;
-       uint32_t length = t->pkt.length;
-       uint32_t i;
-
-       for (i = 0; i < n_extract; i++) {
-               uint32_t header_id = ip->io.hdr.header_id[i];
-               uint32_t struct_id = ip->io.hdr.struct_id[i];
-               uint32_t n_bytes = ip->io.hdr.n_bytes[i];
-
-               TRACE("[Thread %2u]: extract header %u (%u bytes)\n",
-                     p->thread_id,
-                     header_id,
-                     n_bytes);
-
-               /* Headers. */
-               t->structs[struct_id] = ptr;
-               valid_headers = MASK64_BIT_SET(valid_headers, header_id);
-
-               /* Packet. */
-               offset += n_bytes;
-               length -= n_bytes;
-               ptr += n_bytes;
-       }
-
-       /* Headers. */
-       t->valid_headers = valid_headers;
-
-       /* Packet. */
-       t->pkt.offset = offset;
-       t->pkt.length = length;
-       t->ptr = ptr;
-}
 
-static inline void
-instr_hdr_extract_exec(struct rte_swx_pipeline *p)
-{
-       __instr_hdr_extract_exec(p, 1);
+       __instr_hdr_validate_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
 }
 
-static inline void
-instr_hdr_extract2_exec(struct rte_swx_pipeline *p)
+/*
+ * invalidate.
+ */
+static int
+instr_hdr_invalidate_translate(struct rte_swx_pipeline *p,
+                              struct action *action __rte_unused,
+                              char **tokens,
+                              int n_tokens,
+                              struct instruction *instr,
+                              struct instruction_data *data __rte_unused)
 {
-       TRACE("[Thread %2u] *** The next 2 instructions are fused. ***\n",
-             p->thread_id);
+       struct header *h;
 
-       __instr_hdr_extract_exec(p, 2);
+       CHECK(n_tokens == 2, EINVAL);
 
-       /* Thread. */
-       thread_ip_inc(p);
+       h = header_parse(p, tokens[1]);
+       CHECK(h, EINVAL);
+
+       instr->type = INSTR_HDR_INVALIDATE;
+       instr->valid.header_id = h->id;
+       return 0;
 }
 
 static inline void
-instr_hdr_extract3_exec(struct rte_swx_pipeline *p)
+instr_hdr_invalidate_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 3 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       __instr_hdr_extract_exec(p, 3);
+       __instr_hdr_invalidate_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
 }
 
-static inline void
-instr_hdr_extract4_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 4 instructions are fused. ***\n",
-             p->thread_id);
+/*
+ * table.
+ */
+static struct table *
+table_find(struct rte_swx_pipeline *p, const char *name);
 
-       __instr_hdr_extract_exec(p, 4);
+static struct selector *
+selector_find(struct rte_swx_pipeline *p, const char *name);
 
-       /* Thread. */
-       thread_ip_inc(p);
-}
+static struct learner *
+learner_find(struct rte_swx_pipeline *p, const char *name);
 
-static inline void
-instr_hdr_extract5_exec(struct rte_swx_pipeline *p)
+static int
+instr_table_translate(struct rte_swx_pipeline *p,
+                     struct action *action,
+                     char **tokens,
+                     int n_tokens,
+                     struct instruction *instr,
+                     struct instruction_data *data __rte_unused)
 {
-       TRACE("[Thread %2u] *** The next 5 instructions are fused. ***\n",
-             p->thread_id);
+       struct table *t;
+       struct selector *s;
+       struct learner *l;
 
-       __instr_hdr_extract_exec(p, 5);
+       CHECK(!action, EINVAL);
+       CHECK(n_tokens == 2, EINVAL);
 
-       /* Thread. */
-       thread_ip_inc(p);
-}
+       t = table_find(p, tokens[1]);
+       if (t) {
+               instr->type = INSTR_TABLE;
+               instr->table.table_id = t->id;
+               return 0;
+       }
 
-static inline void
-instr_hdr_extract6_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 6 instructions are fused. ***\n",
-             p->thread_id);
+       s = selector_find(p, tokens[1]);
+       if (s) {
+               instr->type = INSTR_SELECTOR;
+               instr->table.table_id = s->id;
+               return 0;
+       }
 
-       __instr_hdr_extract_exec(p, 6);
+       l = learner_find(p, tokens[1]);
+       if (l) {
+               instr->type = INSTR_LEARNER;
+               instr->table.table_id = l->id;
+               return 0;
+       }
 
-       /* Thread. */
-       thread_ip_inc(p);
+       CHECK(0, EINVAL);
 }
 
 static inline void
-instr_hdr_extract7_exec(struct rte_swx_pipeline *p)
+instr_table_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 7 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+       uint32_t table_id = ip->table.table_id;
+       struct rte_swx_table_state *ts = &t->table_state[table_id];
+       struct table_runtime *table = &t->tables[table_id];
+       struct table_statistics *stats = &p->table_stats[table_id];
+       uint64_t action_id, n_pkts_hit, n_pkts_action;
+       uint8_t *action_data;
+       int done, hit;
+
+       /* Table. */
+       done = table->func(ts->obj,
+                          table->mailbox,
+                          table->key,
+                          &action_id,
+                          &action_data,
+                          &hit);
+       if (!done) {
+               /* Thread. */
+               TRACE("[Thread %2u] table %u (not finalized)\n",
+                     p->thread_id,
+                     table_id);
 
-       __instr_hdr_extract_exec(p, 7);
+               thread_yield(p);
+               return;
+       }
 
-       /* Thread. */
-       thread_ip_inc(p);
-}
+       action_id = hit ? action_id : ts->default_action_id;
+       action_data = hit ? action_data : ts->default_action_data;
+       n_pkts_hit = stats->n_pkts_hit[hit];
+       n_pkts_action = stats->n_pkts_action[action_id];
 
-static inline void
-instr_hdr_extract8_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 8 instructions are fused. ***\n",
-             p->thread_id);
+       TRACE("[Thread %2u] table %u (%s, action %u)\n",
+             p->thread_id,
+             table_id,
+             hit ? "hit" : "miss",
+             (uint32_t)action_id);
 
-       __instr_hdr_extract_exec(p, 8);
+       t->action_id = action_id;
+       t->structs[0] = action_data;
+       t->hit = hit;
+       stats->n_pkts_hit[hit] = n_pkts_hit + 1;
+       stats->n_pkts_action[action_id] = n_pkts_action + 1;
 
        /* Thread. */
-       thread_ip_inc(p);
-}
-
-/*
- * emit.
- */
-static int
-instr_hdr_emit_translate(struct rte_swx_pipeline *p,
-                        struct action *action __rte_unused,
-                        char **tokens,
-                        int n_tokens,
-                        struct instruction *instr,
-                        struct instruction_data *data __rte_unused)
-{
-       struct header *h;
-
-       CHECK(n_tokens == 2, EINVAL);
-
-       h = header_parse(p, tokens[1]);
-       CHECK(h, EINVAL);
-
-       instr->type = INSTR_HDR_EMIT;
-       instr->io.hdr.header_id[0] = h->id;
-       instr->io.hdr.struct_id[0] = h->struct_id;
-       instr->io.hdr.n_bytes[0] = h->st->n_bits / 8;
-       return 0;
-}
-
-static inline void
-__instr_hdr_emit_exec(struct rte_swx_pipeline *p, uint32_t n_emit);
-
-static inline void
-__instr_hdr_emit_exec(struct rte_swx_pipeline *p, uint32_t n_emit)
-{
-       struct thread *t = &p->threads[p->thread_id];
-       struct instruction *ip = t->ip;
-       uint64_t valid_headers = t->valid_headers;
-       uint32_t n_headers_out = t->n_headers_out;
-       struct header_out_runtime *ho = &t->headers_out[n_headers_out - 1];
-       uint8_t *ho_ptr = NULL;
-       uint32_t ho_nbytes = 0, first = 1, i;
-
-       for (i = 0; i < n_emit; i++) {
-               uint32_t header_id = ip->io.hdr.header_id[i];
-               uint32_t struct_id = ip->io.hdr.struct_id[i];
-
-               struct header_runtime *hi = &t->headers[header_id];
-               uint8_t *hi_ptr0 = hi->ptr0;
-               uint32_t n_bytes = hi->n_bytes;
-
-               uint8_t *hi_ptr = t->structs[struct_id];
-
-               if (!MASK64_BIT_GET(valid_headers, header_id))
-                       continue;
-
-               TRACE("[Thread %2u]: emit header %u\n",
-                     p->thread_id,
-                     header_id);
-
-               /* Headers. */
-               if (first) {
-                       first = 0;
-
-                       if (!t->n_headers_out) {
-                               ho = &t->headers_out[0];
-
-                               ho->ptr0 = hi_ptr0;
-                               ho->ptr = hi_ptr;
-
-                               ho_ptr = hi_ptr;
-                               ho_nbytes = n_bytes;
-
-                               n_headers_out = 1;
-
-                               continue;
-                       } else {
-                               ho_ptr = ho->ptr;
-                               ho_nbytes = ho->n_bytes;
-                       }
-               }
-
-               if (ho_ptr + ho_nbytes == hi_ptr) {
-                       ho_nbytes += n_bytes;
-               } else {
-                       ho->n_bytes = ho_nbytes;
-
-                       ho++;
-                       ho->ptr0 = hi_ptr0;
-                       ho->ptr = hi_ptr;
-
-                       ho_ptr = hi_ptr;
-                       ho_nbytes = n_bytes;
-
-                       n_headers_out++;
-               }
-       }
-
-       ho->n_bytes = ho_nbytes;
-       t->n_headers_out = n_headers_out;
-}
-
-static inline void
-instr_hdr_emit_exec(struct rte_swx_pipeline *p)
-{
-       __instr_hdr_emit_exec(p, 1);
-
-       /* Thread. */
-       thread_ip_inc(p);
-}
-
-static inline void
-instr_hdr_emit_tx_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 2 instructions are fused. ***\n",
-             p->thread_id);
-
-       __instr_hdr_emit_exec(p, 1);
-       instr_tx_exec(p);
-}
-
-static inline void
-instr_hdr_emit2_tx_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 3 instructions are fused. ***\n",
-             p->thread_id);
-
-       __instr_hdr_emit_exec(p, 2);
-       instr_tx_exec(p);
-}
-
-static inline void
-instr_hdr_emit3_tx_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 4 instructions are fused. ***\n",
-             p->thread_id);
-
-       __instr_hdr_emit_exec(p, 3);
-       instr_tx_exec(p);
-}
-
-static inline void
-instr_hdr_emit4_tx_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 5 instructions are fused. ***\n",
-             p->thread_id);
-
-       __instr_hdr_emit_exec(p, 4);
-       instr_tx_exec(p);
-}
-
-static inline void
-instr_hdr_emit5_tx_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 6 instructions are fused. ***\n",
-             p->thread_id);
-
-       __instr_hdr_emit_exec(p, 5);
-       instr_tx_exec(p);
-}
-
-static inline void
-instr_hdr_emit6_tx_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 7 instructions are fused. ***\n",
-             p->thread_id);
-
-       __instr_hdr_emit_exec(p, 6);
-       instr_tx_exec(p);
-}
-
-static inline void
-instr_hdr_emit7_tx_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 8 instructions are fused. ***\n",
-             p->thread_id);
-
-       __instr_hdr_emit_exec(p, 7);
-       instr_tx_exec(p);
-}
-
-static inline void
-instr_hdr_emit8_tx_exec(struct rte_swx_pipeline *p)
-{
-       TRACE("[Thread %2u] *** The next 9 instructions are fused. ***\n",
-             p->thread_id);
-
-       __instr_hdr_emit_exec(p, 8);
-       instr_tx_exec(p);
-}
-
-/*
- * validate.
- */
-static int
-instr_hdr_validate_translate(struct rte_swx_pipeline *p,
-                            struct action *action __rte_unused,
-                            char **tokens,
-                            int n_tokens,
-                            struct instruction *instr,
-                            struct instruction_data *data __rte_unused)
-{
-       struct header *h;
-
-       CHECK(n_tokens == 2, EINVAL);
-
-       h = header_parse(p, tokens[1]);
-       CHECK(h, EINVAL);
-
-       instr->type = INSTR_HDR_VALIDATE;
-       instr->valid.header_id = h->id;
-       return 0;
-}
-
-static inline void
-instr_hdr_validate_exec(struct rte_swx_pipeline *p)
-{
-       struct thread *t = &p->threads[p->thread_id];
-       struct instruction *ip = t->ip;
-       uint32_t header_id = ip->valid.header_id;
-
-       TRACE("[Thread %2u] validate header %u\n", p->thread_id, header_id);
-
-       /* Headers. */
-       t->valid_headers = MASK64_BIT_SET(t->valid_headers, header_id);
-
-       /* Thread. */
-       thread_ip_inc(p);
-}
-
-/*
- * invalidate.
- */
-static int
-instr_hdr_invalidate_translate(struct rte_swx_pipeline *p,
-                              struct action *action __rte_unused,
-                              char **tokens,
-                              int n_tokens,
-                              struct instruction *instr,
-                              struct instruction_data *data __rte_unused)
-{
-       struct header *h;
-
-       CHECK(n_tokens == 2, EINVAL);
-
-       h = header_parse(p, tokens[1]);
-       CHECK(h, EINVAL);
-
-       instr->type = INSTR_HDR_INVALIDATE;
-       instr->valid.header_id = h->id;
-       return 0;
-}
-
-static inline void
-instr_hdr_invalidate_exec(struct rte_swx_pipeline *p)
-{
-       struct thread *t = &p->threads[p->thread_id];
-       struct instruction *ip = t->ip;
-       uint32_t header_id = ip->valid.header_id;
-
-       TRACE("[Thread %2u] invalidate header %u\n", p->thread_id, header_id);
-
-       /* Headers. */
-       t->valid_headers = MASK64_BIT_CLR(t->valid_headers, header_id);
-
-       /* Thread. */
-       thread_ip_inc(p);
-}
-
-/*
- * table.
- */
-static struct table *
-table_find(struct rte_swx_pipeline *p, const char *name);
-
-static struct selector *
-selector_find(struct rte_swx_pipeline *p, const char *name);
-
-static int
-instr_table_translate(struct rte_swx_pipeline *p,
-                     struct action *action,
-                     char **tokens,
-                     int n_tokens,
-                     struct instruction *instr,
-                     struct instruction_data *data __rte_unused)
-{
-       struct table *t;
-       struct selector *s;
-
-       CHECK(!action, EINVAL);
-       CHECK(n_tokens == 2, EINVAL);
-
-       t = table_find(p, tokens[1]);
-       if (t) {
-               instr->type = INSTR_TABLE;
-               instr->table.table_id = t->id;
-               return 0;
-       }
-
-       s = selector_find(p, tokens[1]);
-       if (s) {
-               instr->type = INSTR_SELECTOR;
-               instr->table.table_id = s->id;
-               return 0;
-       }
-
-       CHECK(0, EINVAL);
+       thread_ip_action_call(p, t, action_id);
 }
 
 static inline void
-instr_table_exec(struct rte_swx_pipeline *p)
+instr_table_af_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
@@ -3540,6 +2147,7 @@ instr_table_exec(struct rte_swx_pipeline *p)
        struct table_statistics *stats = &p->table_stats[table_id];
        uint64_t action_id, n_pkts_hit, n_pkts_action;
        uint8_t *action_data;
+       action_func_t action_func;
        int done, hit;
 
        /* Table. */
@@ -3561,6 +2169,7 @@ instr_table_exec(struct rte_swx_pipeline *p)
 
        action_id = hit ? action_id : ts->default_action_id;
        action_data = hit ? action_data : ts->default_action_data;
+       action_func = p->action_funcs[action_id];
        n_pkts_hit = stats->n_pkts_hit[hit];
        n_pkts_action = stats->n_pkts_action[action_id];
 
@@ -3577,7 +2186,10 @@ instr_table_exec(struct rte_swx_pipeline *p)
        stats->n_pkts_action[action_id] = n_pkts_action + 1;
 
        /* Thread. */
-       thread_ip_action_call(p, t, action_id);
+       thread_ip_inc(p);
+
+       /* Action. */
+       action_func(p);
 }
 
 static inline void
@@ -3619,27 +2231,239 @@ instr_selector_exec(struct rte_swx_pipeline *p)
        thread_ip_inc(p);
 }
 
-/*
- * extern.
- */
-static int
-instr_extern_translate(struct rte_swx_pipeline *p,
-                      struct action *action __rte_unused,
-                      char **tokens,
-                      int n_tokens,
-                      struct instruction *instr,
-                      struct instruction_data *data __rte_unused)
+static inline void
+instr_learner_exec(struct rte_swx_pipeline *p)
 {
-       char *token = tokens[1];
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+       uint32_t learner_id = ip->table.table_id;
+       struct rte_swx_table_state *ts = &t->table_state[p->n_tables +
+               p->n_selectors + learner_id];
+       struct learner_runtime *l = &t->learners[learner_id];
+       struct learner_statistics *stats = &p->learner_stats[learner_id];
+       uint64_t action_id, n_pkts_hit, n_pkts_action, time;
+       uint8_t *action_data;
+       int done, hit;
 
-       CHECK(n_tokens == 2, EINVAL);
+       /* Table. */
+       time = rte_get_tsc_cycles();
 
-       if (token[0] == 'e') {
-               struct extern_obj *obj;
-               struct extern_type_member_func *func;
+       done = rte_swx_table_learner_lookup(ts->obj,
+                                           l->mailbox,
+                                           time,
+                                           l->key,
+                                           &action_id,
+                                           &action_data,
+                                           &hit);
+       if (!done) {
+               /* Thread. */
+               TRACE("[Thread %2u] learner %u (not finalized)\n",
+                     p->thread_id,
+                     learner_id);
 
-               func = extern_obj_member_func_parse(p, token, &obj);
-               CHECK(func, EINVAL);
+               thread_yield(p);
+               return;
+       }
+
+       action_id = hit ? action_id : ts->default_action_id;
+       action_data = hit ? action_data : ts->default_action_data;
+       n_pkts_hit = stats->n_pkts_hit[hit];
+       n_pkts_action = stats->n_pkts_action[action_id];
+
+       TRACE("[Thread %2u] learner %u (%s, action %u)\n",
+             p->thread_id,
+             learner_id,
+             hit ? "hit" : "miss",
+             (uint32_t)action_id);
+
+       t->action_id = action_id;
+       t->structs[0] = action_data;
+       t->hit = hit;
+       t->learner_id = learner_id;
+       t->time = time;
+       stats->n_pkts_hit[hit] = n_pkts_hit + 1;
+       stats->n_pkts_action[action_id] = n_pkts_action + 1;
+
+       /* Thread. */
+       thread_ip_action_call(p, t, action_id);
+}
+
+static inline void
+instr_learner_af_exec(struct rte_swx_pipeline *p)
+{
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+       uint32_t learner_id = ip->table.table_id;
+       struct rte_swx_table_state *ts = &t->table_state[p->n_tables +
+               p->n_selectors + learner_id];
+       struct learner_runtime *l = &t->learners[learner_id];
+       struct learner_statistics *stats = &p->learner_stats[learner_id];
+       uint64_t action_id, n_pkts_hit, n_pkts_action, time;
+       uint8_t *action_data;
+       action_func_t action_func;
+       int done, hit;
+
+       /* Table. */
+       time = rte_get_tsc_cycles();
+
+       done = rte_swx_table_learner_lookup(ts->obj,
+                                           l->mailbox,
+                                           time,
+                                           l->key,
+                                           &action_id,
+                                           &action_data,
+                                           &hit);
+       if (!done) {
+               /* Thread. */
+               TRACE("[Thread %2u] learner %u (not finalized)\n",
+                     p->thread_id,
+                     learner_id);
+
+               thread_yield(p);
+               return;
+       }
+
+       action_id = hit ? action_id : ts->default_action_id;
+       action_data = hit ? action_data : ts->default_action_data;
+       action_func = p->action_funcs[action_id];
+       n_pkts_hit = stats->n_pkts_hit[hit];
+       n_pkts_action = stats->n_pkts_action[action_id];
+
+       TRACE("[Thread %2u] learner %u (%s, action %u)\n",
+             p->thread_id,
+             learner_id,
+             hit ? "hit" : "miss",
+             (uint32_t)action_id);
+
+       t->action_id = action_id;
+       t->structs[0] = action_data;
+       t->hit = hit;
+       t->learner_id = learner_id;
+       t->time = time;
+       stats->n_pkts_hit[hit] = n_pkts_hit + 1;
+       stats->n_pkts_action[action_id] = n_pkts_action + 1;
+
+       /* Thread. */
+       thread_ip_action_call(p, t, action_id);
+
+       /* Action */
+       action_func(p);
+}
+
+/*
+ * learn.
+ */
+static struct action *
+action_find(struct rte_swx_pipeline *p, const char *name);
+
+static int
+action_has_nbo_args(struct action *a);
+
+static int
+learner_action_args_check(struct rte_swx_pipeline *p, struct action *a, const char *mf_name);
+
+static int
+instr_learn_translate(struct rte_swx_pipeline *p,
+                     struct action *action,
+                     char **tokens,
+                     int n_tokens,
+                     struct instruction *instr,
+                     struct instruction_data *data __rte_unused)
+{
+       struct action *a;
+       const char *mf_name;
+       uint32_t mf_offset = 0;
+
+       CHECK(action, EINVAL);
+       CHECK((n_tokens == 2) || (n_tokens == 3), EINVAL);
+
+       a = action_find(p, tokens[1]);
+       CHECK(a, EINVAL);
+       CHECK(!action_has_nbo_args(a), EINVAL);
+
+       mf_name = (n_tokens > 2) ? tokens[2] : NULL;
+       CHECK(!learner_action_args_check(p, a, mf_name), EINVAL);
+
+       if (mf_name) {
+               struct field *mf;
+
+               mf = metadata_field_parse(p, mf_name);
+               CHECK(mf, EINVAL);
+
+               mf_offset = mf->offset / 8;
+       }
+
+       instr->type = INSTR_LEARNER_LEARN;
+       instr->learn.action_id = a->id;
+       instr->learn.mf_offset = mf_offset;
+
+       return 0;
+}
+
+static inline void
+instr_learn_exec(struct rte_swx_pipeline *p)
+{
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+
+       __instr_learn_exec(p, t, ip);
+
+       /* Thread. */
+       thread_ip_inc(p);
+}
+
+/*
+ * forget.
+ */
+static int
+instr_forget_translate(struct rte_swx_pipeline *p __rte_unused,
+                      struct action *action,
+                      char **tokens __rte_unused,
+                      int n_tokens,
+                      struct instruction *instr,
+                      struct instruction_data *data __rte_unused)
+{
+       CHECK(action, EINVAL);
+       CHECK(n_tokens == 1, EINVAL);
+
+       instr->type = INSTR_LEARNER_FORGET;
+
+       return 0;
+}
+
+static inline void
+instr_forget_exec(struct rte_swx_pipeline *p)
+{
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
+
+       __instr_forget_exec(p, t, ip);
+
+       /* Thread. */
+       thread_ip_inc(p);
+}
+
+/*
+ * extern.
+ */
+static int
+instr_extern_translate(struct rte_swx_pipeline *p,
+                      struct action *action __rte_unused,
+                      char **tokens,
+                      int n_tokens,
+                      struct instruction *instr,
+                      struct instruction_data *data __rte_unused)
+{
+       char *token = tokens[1];
+
+       CHECK(n_tokens == 2, EINVAL);
+
+       if (token[0] == 'e') {
+               struct extern_obj *obj;
+               struct extern_type_member_func *func;
+
+               func = extern_obj_member_func_parse(p, token, &obj);
+               CHECK(func, EINVAL);
 
                instr->type = INSTR_EXTERN_OBJ;
                instr->ext_obj.ext_obj_id = obj->id;
@@ -3668,18 +2492,10 @@ instr_extern_obj_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint32_t obj_id = ip->ext_obj.ext_obj_id;
-       uint32_t func_id = ip->ext_obj.func_id;
-       struct extern_obj_runtime *obj = &t->extern_objs[obj_id];
-       rte_swx_extern_type_member_func_t func = obj->funcs[func_id];
-
-       TRACE("[Thread %2u] extern obj %u member func %u\n",
-             p->thread_id,
-             obj_id,
-             func_id);
+       uint32_t done;
 
        /* Extern object member function execute. */
-       uint32_t done = func(obj->obj, obj->mailbox);
+       done = __instr_extern_obj_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc_cond(t, done);
@@ -3691,16 +2507,10 @@ instr_extern_func_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint32_t ext_func_id = ip->ext_func.ext_func_id;
-       struct extern_func_runtime *ext_func = &t->extern_funcs[ext_func_id];
-       rte_swx_extern_func_t func = ext_func->func;
-
-       TRACE("[Thread %2u] extern func %u\n",
-             p->thread_id,
-             ext_func_id);
+       uint32_t done;
 
        /* Extern function execute. */
-       uint32_t done = func(ext_func->mailbox);
+       done = __instr_extern_func_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc_cond(t, done);
@@ -3727,10 +2537,13 @@ instr_mov_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* MOV, MOV_MH, MOV_HM or MOV_HH. */
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_MOV;
                if (dst[0] != 'h' && src[0] == 'h')
                        instr->type = INSTR_MOV_MH;
@@ -3769,10 +2582,7 @@ instr_mov_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] mov\n",
-             p->thread_id);
-
-       MOV(t, ip);
+       __instr_mov_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3784,10 +2594,7 @@ instr_mov_mh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] mov (mh)\n",
-             p->thread_id);
-
-       MOV_MH(t, ip);
+       __instr_mov_mh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3799,10 +2606,7 @@ instr_mov_hm_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] mov (hm)\n",
-             p->thread_id);
-
-       MOV_HM(t, ip);
+       __instr_mov_hm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3814,10 +2618,7 @@ instr_mov_hh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] mov (hh)\n",
-             p->thread_id);
-
-       MOV_HH(t, ip);
+       __instr_mov_hh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3829,11 +2630,7 @@ instr_mov_i_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] mov m.f %" PRIx64 "\n",
-             p->thread_id,
-             ip->mov.src_val);
-
-       MOV_I(t, ip);
+       __instr_mov_i_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3843,46 +2640,12 @@ instr_mov_i_exec(struct rte_swx_pipeline *p)
  * dma.
  */
 static inline void
-__instr_dma_ht_exec(struct rte_swx_pipeline *p, uint32_t n_dma);
-
-static inline void
-__instr_dma_ht_exec(struct rte_swx_pipeline *p, uint32_t n_dma)
+instr_dma_ht_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint8_t *action_data = t->structs[0];
-       uint64_t valid_headers = t->valid_headers;
-       uint32_t i;
-
-       for (i = 0; i < n_dma; i++) {
-               uint32_t header_id = ip->dma.dst.header_id[i];
-               uint32_t struct_id = ip->dma.dst.struct_id[i];
-               uint32_t offset = ip->dma.src.offset[i];
-               uint32_t n_bytes = ip->dma.n_bytes[i];
-
-               struct header_runtime *h = &t->headers[header_id];
-               uint8_t *h_ptr0 = h->ptr0;
-               uint8_t *h_ptr = t->structs[struct_id];
-
-               void *dst = MASK64_BIT_GET(valid_headers, header_id) ?
-                       h_ptr : h_ptr0;
-               void *src = &action_data[offset];
-
-               TRACE("[Thread %2u] dma h.s t.f\n", p->thread_id);
 
-               /* Headers. */
-               memcpy(dst, src, n_bytes);
-               t->structs[struct_id] = dst;
-               valid_headers = MASK64_BIT_SET(valid_headers, header_id);
-       }
-
-       t->valid_headers = valid_headers;
-}
-
-static inline void
-instr_dma_ht_exec(struct rte_swx_pipeline *p)
-{
-       __instr_dma_ht_exec(p, 1);
+       __instr_dma_ht_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3891,10 +2654,10 @@ instr_dma_ht_exec(struct rte_swx_pipeline *p)
 static inline void
 instr_dma_ht2_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 2 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       __instr_dma_ht_exec(p, 2);
+       __instr_dma_ht2_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3903,10 +2666,10 @@ instr_dma_ht2_exec(struct rte_swx_pipeline *p)
 static inline void
 instr_dma_ht3_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 3 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       __instr_dma_ht_exec(p, 3);
+       __instr_dma_ht3_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3915,10 +2678,10 @@ instr_dma_ht3_exec(struct rte_swx_pipeline *p)
 static inline void
 instr_dma_ht4_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 4 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       __instr_dma_ht_exec(p, 4);
+       __instr_dma_ht4_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3927,10 +2690,10 @@ instr_dma_ht4_exec(struct rte_swx_pipeline *p)
 static inline void
 instr_dma_ht5_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 5 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       __instr_dma_ht_exec(p, 5);
+       __instr_dma_ht5_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3939,10 +2702,10 @@ instr_dma_ht5_exec(struct rte_swx_pipeline *p)
 static inline void
 instr_dma_ht6_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 6 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       __instr_dma_ht_exec(p, 6);
+       __instr_dma_ht6_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3951,10 +2714,10 @@ instr_dma_ht6_exec(struct rte_swx_pipeline *p)
 static inline void
 instr_dma_ht7_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 7 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       __instr_dma_ht_exec(p, 7);
+       __instr_dma_ht7_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3963,10 +2726,10 @@ instr_dma_ht7_exec(struct rte_swx_pipeline *p)
 static inline void
 instr_dma_ht8_exec(struct rte_swx_pipeline *p)
 {
-       TRACE("[Thread %2u] *** The next 8 instructions are fused. ***\n",
-             p->thread_id);
+       struct thread *t = &p->threads[p->thread_id];
+       struct instruction *ip = t->ip;
 
-       __instr_dma_ht_exec(p, 8);
+       __instr_dma_ht8_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -3992,10 +2755,13 @@ instr_alu_add_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* ADD, ADD_HM, ADD_MH, ADD_HH. */
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_ALU_ADD;
                if (dst[0] == 'h' && src[0] != 'h')
                        instr->type = INSTR_ALU_ADD_HM;
@@ -4045,10 +2811,13 @@ instr_alu_sub_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* SUB, SUB_HM, SUB_MH, SUB_HH. */
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_ALU_SUB;
                if (dst[0] == 'h' && src[0] != 'h')
                        instr->type = INSTR_ALU_SUB_HM;
@@ -4097,10 +2866,13 @@ instr_alu_ckadd_translate(struct rte_swx_pipeline *p,
 
        fdst = header_field_parse(p, dst, &hdst);
        CHECK(fdst && (fdst->n_bits == 16), EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* CKADD_FIELD. */
        fsrc = header_field_parse(p, src, &hsrc);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_ALU_CKADD_FIELD;
                instr->alu.dst.struct_id = (uint8_t)hdst->struct_id;
                instr->alu.dst.n_bits = fdst->n_bits;
@@ -4114,6 +2886,7 @@ instr_alu_ckadd_translate(struct rte_swx_pipeline *p,
        /* CKADD_STRUCT, CKADD_STRUCT20. */
        hsrc = header_parse(p, src);
        CHECK(hsrc, EINVAL);
+       CHECK(!hsrc->st->var_size, EINVAL);
 
        instr->type = INSTR_ALU_CKADD_STRUCT;
        if ((hsrc->st->n_bits / 8) == 20)
@@ -4144,9 +2917,11 @@ instr_alu_cksub_translate(struct rte_swx_pipeline *p,
 
        fdst = header_field_parse(p, dst, &hdst);
        CHECK(fdst && (fdst->n_bits == 16), EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        fsrc = header_field_parse(p, src, &hsrc);
        CHECK(fsrc, EINVAL);
+       CHECK(!fsrc->var_size, EINVAL);
 
        instr->type = INSTR_ALU_CKSUB_FIELD;
        instr->alu.dst.struct_id = (uint8_t)hdst->struct_id;
@@ -4175,10 +2950,13 @@ instr_alu_shl_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* SHL, SHL_HM, SHL_MH, SHL_HH. */
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_ALU_SHL;
                if (dst[0] == 'h' && src[0] != 'h')
                        instr->type = INSTR_ALU_SHL_HM;
@@ -4228,10 +3006,13 @@ instr_alu_shr_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* SHR, SHR_HM, SHR_MH, SHR_HH. */
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_ALU_SHR;
                if (dst[0] == 'h' && src[0] != 'h')
                        instr->type = INSTR_ALU_SHR_HM;
@@ -4281,10 +3062,13 @@ instr_alu_and_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* AND, AND_MH, AND_HM, AND_HH. */
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_ALU_AND;
                if (dst[0] != 'h' && src[0] == 'h')
                        instr->type = INSTR_ALU_AND_MH;
@@ -4334,10 +3118,13 @@ instr_alu_or_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* OR, OR_MH, OR_HM, OR_HH. */
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_ALU_OR;
                if (dst[0] != 'h' && src[0] == 'h')
                        instr->type = INSTR_ALU_OR_MH;
@@ -4387,10 +3174,13 @@ instr_alu_xor_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* XOR, XOR_MH, XOR_HM, XOR_HH. */
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fsrc) {
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_ALU_XOR;
                if (dst[0] != 'h' && src[0] == 'h')
                        instr->type = INSTR_ALU_XOR_MH;
@@ -4429,10 +3219,8 @@ instr_alu_add_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] add\n", p->thread_id);
-
-       /* Structs. */
-       ALU(t, ip, +);
+       /* Structs */
+       __instr_alu_add_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4444,10 +3232,8 @@ instr_alu_add_mh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] add (mh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MH(t, ip, +);
+       __instr_alu_add_mh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4459,10 +3245,8 @@ instr_alu_add_hm_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] add (hm)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HM(t, ip, +);
+       __instr_alu_add_hm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4474,10 +3258,8 @@ instr_alu_add_hh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] add (hh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HH(t, ip, +);
+       __instr_alu_add_hh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4489,10 +3271,8 @@ instr_alu_add_mi_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] add (mi)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MI(t, ip, +);
+       __instr_alu_add_mi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4504,10 +3284,8 @@ instr_alu_add_hi_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] add (hi)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HI(t, ip, +);
+       __instr_alu_add_hi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4519,10 +3297,8 @@ instr_alu_sub_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] sub\n", p->thread_id);
-
        /* Structs. */
-       ALU(t, ip, -);
+       __instr_alu_sub_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4534,10 +3310,8 @@ instr_alu_sub_mh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] sub (mh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MH(t, ip, -);
+       __instr_alu_sub_mh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4549,10 +3323,8 @@ instr_alu_sub_hm_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] sub (hm)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HM(t, ip, -);
+       __instr_alu_sub_hm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4564,10 +3336,8 @@ instr_alu_sub_hh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] sub (hh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HH(t, ip, -);
+       __instr_alu_sub_hh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4579,10 +3349,8 @@ instr_alu_sub_mi_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] sub (mi)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MI(t, ip, -);
+       __instr_alu_sub_mi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4594,10 +3362,8 @@ instr_alu_sub_hi_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] sub (hi)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HI(t, ip, -);
+       __instr_alu_sub_hi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4609,10 +3375,8 @@ instr_alu_shl_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shl\n", p->thread_id);
-
        /* Structs. */
-       ALU(t, ip, <<);
+       __instr_alu_shl_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4624,10 +3388,8 @@ instr_alu_shl_mh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shl (mh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MH(t, ip, <<);
+       __instr_alu_shl_mh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4639,10 +3401,8 @@ instr_alu_shl_hm_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shl (hm)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HM(t, ip, <<);
+       __instr_alu_shl_hm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4654,10 +3414,8 @@ instr_alu_shl_hh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shl (hh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HH(t, ip, <<);
+       __instr_alu_shl_hh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4669,10 +3427,8 @@ instr_alu_shl_mi_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shl (mi)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MI(t, ip, <<);
+       __instr_alu_shl_mi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4684,10 +3440,8 @@ instr_alu_shl_hi_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shl (hi)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HI(t, ip, <<);
+       __instr_alu_shl_hi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4699,10 +3453,8 @@ instr_alu_shr_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shr\n", p->thread_id);
-
        /* Structs. */
-       ALU(t, ip, >>);
+       __instr_alu_shr_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4714,10 +3466,8 @@ instr_alu_shr_mh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shr (mh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MH(t, ip, >>);
+       __instr_alu_shr_mh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4729,10 +3479,8 @@ instr_alu_shr_hm_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shr (hm)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HM(t, ip, >>);
+       __instr_alu_shr_hm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4744,10 +3492,8 @@ instr_alu_shr_hh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shr (hh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HH(t, ip, >>);
+       __instr_alu_shr_hh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4759,10 +3505,8 @@ instr_alu_shr_mi_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shr (mi)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MI(t, ip, >>);
+       __instr_alu_shr_mi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4774,10 +3518,8 @@ instr_alu_shr_hi_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] shr (hi)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HI(t, ip, >>);
+       __instr_alu_shr_hi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4789,10 +3531,8 @@ instr_alu_and_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] and\n", p->thread_id);
-
        /* Structs. */
-       ALU(t, ip, &);
+       __instr_alu_and_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4804,10 +3544,8 @@ instr_alu_and_mh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] and (mh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MH(t, ip, &);
+       __instr_alu_and_mh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4819,10 +3557,8 @@ instr_alu_and_hm_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] and (hm)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HM_FAST(t, ip, &);
+       __instr_alu_and_hm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4834,10 +3570,8 @@ instr_alu_and_hh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] and (hh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HH_FAST(t, ip, &);
+       __instr_alu_and_hh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4849,10 +3583,8 @@ instr_alu_and_i_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] and (i)\n", p->thread_id);
-
        /* Structs. */
-       ALU_I(t, ip, &);
+       __instr_alu_and_i_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4864,10 +3596,8 @@ instr_alu_or_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] or\n", p->thread_id);
-
        /* Structs. */
-       ALU(t, ip, |);
+       __instr_alu_or_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4879,10 +3609,8 @@ instr_alu_or_mh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] or (mh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MH(t, ip, |);
+       __instr_alu_or_mh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4894,10 +3622,8 @@ instr_alu_or_hm_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] or (hm)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HM_FAST(t, ip, |);
+       __instr_alu_or_hm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4909,10 +3635,8 @@ instr_alu_or_hh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] or (hh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HH_FAST(t, ip, |);
+       __instr_alu_or_hh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4924,10 +3648,8 @@ instr_alu_or_i_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] or (i)\n", p->thread_id);
-
        /* Structs. */
-       ALU_I(t, ip, |);
+       __instr_alu_or_i_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4939,10 +3661,8 @@ instr_alu_xor_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] xor\n", p->thread_id);
-
        /* Structs. */
-       ALU(t, ip, ^);
+       __instr_alu_xor_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4954,10 +3674,8 @@ instr_alu_xor_mh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] xor (mh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_MH(t, ip, ^);
+       __instr_alu_xor_mh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4969,10 +3687,8 @@ instr_alu_xor_hm_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] xor (hm)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HM_FAST(t, ip, ^);
+       __instr_alu_xor_hm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4984,10 +3700,8 @@ instr_alu_xor_hh_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] xor (hh)\n", p->thread_id);
-
        /* Structs. */
-       ALU_HH_FAST(t, ip, ^);
+       __instr_alu_xor_hh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -4999,10 +3713,8 @@ instr_alu_xor_i_exec(struct rte_swx_pipeline *p)
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
 
-       TRACE("[Thread %2u] xor (i)\n", p->thread_id);
-
        /* Structs. */
-       ALU_I(t, ip, ^);
+       __instr_alu_xor_i_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5013,55 +3725,9 @@ instr_alu_ckadd_field_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint8_t *dst_struct, *src_struct;
-       uint16_t *dst16_ptr, dst;
-       uint64_t *src64_ptr, src64, src64_mask, src;
-       uint64_t r;
-
-       TRACE("[Thread %2u] ckadd (field)\n", p->thread_id);
 
        /* Structs. */
-       dst_struct = t->structs[ip->alu.dst.struct_id];
-       dst16_ptr = (uint16_t *)&dst_struct[ip->alu.dst.offset];
-       dst = *dst16_ptr;
-
-       src_struct = t->structs[ip->alu.src.struct_id];
-       src64_ptr = (uint64_t *)&src_struct[ip->alu.src.offset];
-       src64 = *src64_ptr;
-       src64_mask = UINT64_MAX >> (64 - ip->alu.src.n_bits);
-       src = src64 & src64_mask;
-
-       r = dst;
-       r = ~r & 0xFFFF;
-
-       /* The first input (r) is a 16-bit number. The second and the third
-        * inputs are 32-bit numbers. In the worst case scenario, the sum of the
-        * three numbers (output r) is a 34-bit number.
-        */
-       r += (src >> 32) + (src & 0xFFFFFFFF);
-
-       /* The first input is a 16-bit number. The second input is an 18-bit
-        * number. In the worst case scenario, the sum of the two numbers is a
-        * 19-bit number.
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       /* The first input is a 16-bit number (0 .. 0xFFFF). The second input is
-        * a 3-bit number (0 .. 7). Their sum is a 17-bit number (0 .. 0x10006).
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       /* When the input r is (0 .. 0xFFFF), the output r is equal to the input
-        * r, so the output is (0 .. 0xFFFF). When the input r is (0x10000 ..
-        * 0x10006), the output r is (0 .. 7). So no carry bit can be generated,
-        * therefore the output r is always a 16-bit number.
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       r = ~r & 0xFFFF;
-       r = r ? r : 0xFFFF;
-
-       *dst16_ptr = (uint16_t)r;
+       __instr_alu_ckadd_field_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5072,118 +3738,22 @@ instr_alu_cksub_field_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint8_t *dst_struct, *src_struct;
-       uint16_t *dst16_ptr, dst;
-       uint64_t *src64_ptr, src64, src64_mask, src;
-       uint64_t r;
-
-       TRACE("[Thread %2u] cksub (field)\n", p->thread_id);
 
        /* Structs. */
-       dst_struct = t->structs[ip->alu.dst.struct_id];
-       dst16_ptr = (uint16_t *)&dst_struct[ip->alu.dst.offset];
-       dst = *dst16_ptr;
-
-       src_struct = t->structs[ip->alu.src.struct_id];
-       src64_ptr = (uint64_t *)&src_struct[ip->alu.src.offset];
-       src64 = *src64_ptr;
-       src64_mask = UINT64_MAX >> (64 - ip->alu.src.n_bits);
-       src = src64 & src64_mask;
-
-       r = dst;
-       r = ~r & 0xFFFF;
-
-       /* Subtraction in 1's complement arithmetic (i.e. a '- b) is the same as
-        * the following sequence of operations in 2's complement arithmetic:
-        *    a '- b = (a - b) % 0xFFFF.
-        *
-        * In order to prevent an underflow for the below subtraction, in which
-        * a 33-bit number (the subtrahend) is taken out of a 16-bit number (the
-        * minuend), we first add a multiple of the 0xFFFF modulus to the
-        * minuend. The number we add to the minuend needs to be a 34-bit number
-        * or higher, so for readability reasons we picked the 36-bit multiple.
-        * We are effectively turning the 16-bit minuend into a 36-bit number:
-        *    (a - b) % 0xFFFF = (a + 0xFFFF00000 - b) % 0xFFFF.
-        */
-       r += 0xFFFF00000ULL; /* The output r is a 36-bit number. */
-
-       /* A 33-bit number is subtracted from a 36-bit number (the input r). The
-        * result (the output r) is a 36-bit number.
-        */
-       r -= (src >> 32) + (src & 0xFFFFFFFF);
+       __instr_alu_cksub_field_exec(p, t, ip);
 
-       /* The first input is a 16-bit number. The second input is a 20-bit
-        * number. Their sum is a 21-bit number.
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       /* The first input is a 16-bit number (0 .. 0xFFFF). The second input is
-        * a 5-bit number (0 .. 31). The sum is a 17-bit number (0 .. 0x1001E).
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       /* When the input r is (0 .. 0xFFFF), the output r is equal to the input
-        * r, so the output is (0 .. 0xFFFF). When the input r is (0x10000 ..
-        * 0x1001E), the output r is (0 .. 31). So no carry bit can be
-        * generated, therefore the output r is always a 16-bit number.
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       r = ~r & 0xFFFF;
-       r = r ? r : 0xFFFF;
-
-       *dst16_ptr = (uint16_t)r;
-
-       /* Thread. */
-       thread_ip_inc(p);
-}
+       /* Thread. */
+       thread_ip_inc(p);
+}
 
 static inline void
 instr_alu_ckadd_struct20_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint8_t *dst_struct, *src_struct;
-       uint16_t *dst16_ptr;
-       uint32_t *src32_ptr;
-       uint64_t r0, r1;
-
-       TRACE("[Thread %2u] ckadd (struct of 20 bytes)\n", p->thread_id);
 
        /* Structs. */
-       dst_struct = t->structs[ip->alu.dst.struct_id];
-       dst16_ptr = (uint16_t *)&dst_struct[ip->alu.dst.offset];
-
-       src_struct = t->structs[ip->alu.src.struct_id];
-       src32_ptr = (uint32_t *)&src_struct[0];
-
-       r0 = src32_ptr[0]; /* r0 is a 32-bit number. */
-       r1 = src32_ptr[1]; /* r1 is a 32-bit number. */
-       r0 += src32_ptr[2]; /* The output r0 is a 33-bit number. */
-       r1 += src32_ptr[3]; /* The output r1 is a 33-bit number. */
-       r0 += r1 + src32_ptr[4]; /* The output r0 is a 35-bit number. */
-
-       /* The first input is a 16-bit number. The second input is a 19-bit
-        * number. Their sum is a 20-bit number.
-        */
-       r0 = (r0 & 0xFFFF) + (r0 >> 16);
-
-       /* The first input is a 16-bit number (0 .. 0xFFFF). The second input is
-        * a 4-bit number (0 .. 15). The sum is a 17-bit number (0 .. 0x1000E).
-        */
-       r0 = (r0 & 0xFFFF) + (r0 >> 16);
-
-       /* When the input r is (0 .. 0xFFFF), the output r is equal to the input
-        * r, so the output is (0 .. 0xFFFF). When the input r is (0x10000 ..
-        * 0x1000E), the output r is (0 .. 15). So no carry bit can be
-        * generated, therefore the output r is always a 16-bit number.
-        */
-       r0 = (r0 & 0xFFFF) + (r0 >> 16);
-
-       r0 = ~r0 & 0xFFFF;
-       r0 = r0 ? r0 : 0xFFFF;
-
-       *dst16_ptr = (uint16_t)r0;
+       __instr_alu_ckadd_struct20_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5194,49 +3764,9 @@ instr_alu_ckadd_struct_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint8_t *dst_struct, *src_struct;
-       uint16_t *dst16_ptr;
-       uint32_t *src32_ptr;
-       uint64_t r = 0;
-       uint32_t i;
-
-       TRACE("[Thread %2u] ckadd (struct)\n", p->thread_id);
 
        /* Structs. */
-       dst_struct = t->structs[ip->alu.dst.struct_id];
-       dst16_ptr = (uint16_t *)&dst_struct[ip->alu.dst.offset];
-
-       src_struct = t->structs[ip->alu.src.struct_id];
-       src32_ptr = (uint32_t *)&src_struct[0];
-
-       /* The max number of 32-bit words in a 256-byte header is 8 = 2^3.
-        * Therefore, in the worst case scenario, a 35-bit number is added to a
-        * 16-bit number (the input r), so the output r is 36-bit number.
-        */
-       for (i = 0; i < ip->alu.src.n_bits / 32; i++, src32_ptr++)
-               r += *src32_ptr;
-
-       /* The first input is a 16-bit number. The second input is a 20-bit
-        * number. Their sum is a 21-bit number.
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       /* The first input is a 16-bit number (0 .. 0xFFFF). The second input is
-        * a 5-bit number (0 .. 31). The sum is a 17-bit number (0 .. 0x1000E).
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       /* When the input r is (0 .. 0xFFFF), the output r is equal to the input
-        * r, so the output is (0 .. 0xFFFF). When the input r is (0x10000 ..
-        * 0x1001E), the output r is (0 .. 31). So no carry bit can be
-        * generated, therefore the output r is always a 16-bit number.
-        */
-       r = (r & 0xFFFF) + (r >> 16);
-
-       r = ~r & 0xFFFF;
-       r = r ? r : 0xFFFF;
-
-       *dst16_ptr = (uint16_t)r;
+       __instr_alu_ckadd_struct_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5269,6 +3799,8 @@ instr_regprefetch_translate(struct rte_swx_pipeline *p,
        /* REGPREFETCH_RH, REGPREFETCH_RM. */
        fidx = struct_field_parse(p, action, idx, &idx_struct_id);
        if (fidx) {
+               CHECK(!fidx->var_size, EINVAL);
+
                instr->type = INSTR_REGPREFETCH_RM;
                if (idx[0] == 'h')
                        instr->type = INSTR_REGPREFETCH_RH;
@@ -5312,10 +3844,13 @@ instr_regrd_translate(struct rte_swx_pipeline *p,
 
        fdst = struct_field_parse(p, NULL, dst, &dst_struct_id);
        CHECK(fdst, EINVAL);
+       CHECK(!fdst->var_size, EINVAL);
 
        /* REGRD_HRH, REGRD_HRM, REGRD_MRH, REGRD_MRM. */
        fidx = struct_field_parse(p, action, idx, &idx_struct_id);
        if (fidx) {
+               CHECK(!fidx->var_size, EINVAL);
+
                instr->type = INSTR_REGRD_MRM;
                if (dst[0] == 'h' && idx[0] != 'h')
                        instr->type = INSTR_REGRD_HRM;
@@ -5373,6 +3908,9 @@ instr_regwr_translate(struct rte_swx_pipeline *p,
        fidx = struct_field_parse(p, action, idx, &idx_struct_id);
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fidx && fsrc) {
+               CHECK(!fidx->var_size, EINVAL);
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_REGWR_RMM;
                if (idx[0] == 'h' && src[0] != 'h')
                        instr->type = INSTR_REGWR_RHM;
@@ -5393,6 +3931,8 @@ instr_regwr_translate(struct rte_swx_pipeline *p,
 
        /* REGWR_RHI, REGWR_RMI. */
        if (fidx && !fsrc) {
+               CHECK(!fidx->var_size, EINVAL);
+
                src_val = strtoull(src, &src, 0);
                CHECK(!src[0], EINVAL);
 
@@ -5413,6 +3953,8 @@ instr_regwr_translate(struct rte_swx_pipeline *p,
                idx_val = strtoul(idx, &idx, 0);
                CHECK(!idx[0], EINVAL);
 
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_REGWR_RIM;
                if (src[0] == 'h')
                        instr->type = INSTR_REGWR_RIH;
@@ -5462,6 +4004,9 @@ instr_regadd_translate(struct rte_swx_pipeline *p,
        fidx = struct_field_parse(p, action, idx, &idx_struct_id);
        fsrc = struct_field_parse(p, action, src, &src_struct_id);
        if (fidx && fsrc) {
+               CHECK(!fidx->var_size, EINVAL);
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_REGADD_RMM;
                if (idx[0] == 'h' && src[0] != 'h')
                        instr->type = INSTR_REGADD_RHM;
@@ -5482,6 +4027,8 @@ instr_regadd_translate(struct rte_swx_pipeline *p,
 
        /* REGADD_RHI, REGADD_RMI. */
        if (fidx && !fsrc) {
+               CHECK(!fidx->var_size, EINVAL);
+
                src_val = strtoull(src, &src, 0);
                CHECK(!src[0], EINVAL);
 
@@ -5502,6 +4049,8 @@ instr_regadd_translate(struct rte_swx_pipeline *p,
                idx_val = strtoul(idx, &idx, 0);
                CHECK(!idx[0], EINVAL);
 
+               CHECK(!fsrc->var_size, EINVAL);
+
                instr->type = INSTR_REGADD_RIM;
                if (src[0] == 'h')
                        instr->type = INSTR_REGADD_RIH;
@@ -5527,134 +4076,14 @@ instr_regadd_translate(struct rte_swx_pipeline *p,
        return 0;
 }
 
-static inline uint64_t *
-instr_regarray_regarray(struct rte_swx_pipeline *p, struct instruction *ip)
-{
-       struct regarray_runtime *r = &p->regarray_runtime[ip->regarray.regarray_id];
-       return r->regarray;
-}
-
-static inline uint64_t
-instr_regarray_idx_hbo(struct rte_swx_pipeline *p, struct thread *t, struct instruction *ip)
-{
-       struct regarray_runtime *r = &p->regarray_runtime[ip->regarray.regarray_id];
-
-       uint8_t *idx_struct = t->structs[ip->regarray.idx.struct_id];
-       uint64_t *idx64_ptr = (uint64_t *)&idx_struct[ip->regarray.idx.offset];
-       uint64_t idx64 = *idx64_ptr;
-       uint64_t idx64_mask = UINT64_MAX >> (64 - ip->regarray.idx.n_bits);
-       uint64_t idx = idx64 & idx64_mask & r->size_mask;
-
-       return idx;
-}
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-static inline uint64_t
-instr_regarray_idx_nbo(struct rte_swx_pipeline *p, struct thread *t, struct instruction *ip)
-{
-       struct regarray_runtime *r = &p->regarray_runtime[ip->regarray.regarray_id];
-
-       uint8_t *idx_struct = t->structs[ip->regarray.idx.struct_id];
-       uint64_t *idx64_ptr = (uint64_t *)&idx_struct[ip->regarray.idx.offset];
-       uint64_t idx64 = *idx64_ptr;
-       uint64_t idx = (ntoh64(idx64) >> (64 - ip->regarray.idx.n_bits)) & r->size_mask;
-
-       return idx;
-}
-
-#else
-
-#define instr_regarray_idx_nbo instr_regarray_idx_hbo
-
-#endif
-
-static inline uint64_t
-instr_regarray_idx_imm(struct rte_swx_pipeline *p, struct instruction *ip)
-{
-       struct regarray_runtime *r = &p->regarray_runtime[ip->regarray.regarray_id];
-
-       uint64_t idx = ip->regarray.idx_val & r->size_mask;
-
-       return idx;
-}
-
-static inline uint64_t
-instr_regarray_src_hbo(struct thread *t, struct instruction *ip)
-{
-       uint8_t *src_struct = t->structs[ip->regarray.dstsrc.struct_id];
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[ip->regarray.dstsrc.offset];
-       uint64_t src64 = *src64_ptr;
-       uint64_t src64_mask = UINT64_MAX >> (64 - ip->regarray.dstsrc.n_bits);
-       uint64_t src = src64 & src64_mask;
-
-       return src;
-}
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-static inline uint64_t
-instr_regarray_src_nbo(struct thread *t, struct instruction *ip)
-{
-       uint8_t *src_struct = t->structs[ip->regarray.dstsrc.struct_id];
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[ip->regarray.dstsrc.offset];
-       uint64_t src64 = *src64_ptr;
-       uint64_t src = ntoh64(src64) >> (64 - ip->regarray.dstsrc.n_bits);
-
-       return src;
-}
-
-#else
-
-#define instr_regarray_src_nbo instr_regarray_src_hbo
-
-#endif
-
-static inline void
-instr_regarray_dst_hbo_src_hbo_set(struct thread *t, struct instruction *ip, uint64_t src)
-{
-       uint8_t *dst_struct = t->structs[ip->regarray.dstsrc.struct_id];
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[ip->regarray.dstsrc.offset];
-       uint64_t dst64 = *dst64_ptr;
-       uint64_t dst64_mask = UINT64_MAX >> (64 - ip->regarray.dstsrc.n_bits);
-
-       *dst64_ptr = (dst64 & ~dst64_mask) | (src & dst64_mask);
-
-}
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-static inline void
-instr_regarray_dst_nbo_src_hbo_set(struct thread *t, struct instruction *ip, uint64_t src)
-{
-       uint8_t *dst_struct = t->structs[ip->regarray.dstsrc.struct_id];
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[ip->regarray.dstsrc.offset];
-       uint64_t dst64 = *dst64_ptr;
-       uint64_t dst64_mask = UINT64_MAX >> (64 - ip->regarray.dstsrc.n_bits);
-
-       src = hton64(src) >> (64 - ip->regarray.dstsrc.n_bits);
-       *dst64_ptr = (dst64 & ~dst64_mask) | (src & dst64_mask);
-}
-
-#else
-
-#define instr_regarray_dst_nbo_src_hbo_set instr_regarray_dst_hbo_src_hbo_set
-
-#endif
-
 static inline void
 instr_regprefetch_rh_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
-
-       TRACE("[Thread %2u] regprefetch (r[h])\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       rte_prefetch0(&regarray[idx]);
+       __instr_regprefetch_rh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5665,14 +4094,9 @@ instr_regprefetch_rm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
-
-       TRACE("[Thread %2u] regprefetch (r[m])\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       rte_prefetch0(&regarray[idx]);
+       __instr_regprefetch_rm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5683,14 +4107,9 @@ instr_regprefetch_ri_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
-
-       TRACE("[Thread %2u] regprefetch (r[i])\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       rte_prefetch0(&regarray[idx]);
+       __instr_regprefetch_ri_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5701,14 +4120,9 @@ instr_regrd_hrh_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
-
-       TRACE("[Thread %2u] regrd (h = r[h])\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       instr_regarray_dst_nbo_src_hbo_set(t, ip, regarray[idx]);
+       __instr_regrd_hrh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5719,14 +4133,9 @@ instr_regrd_hrm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
-
-       TRACE("[Thread %2u] regrd (h = r[m])\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       instr_regarray_dst_nbo_src_hbo_set(t, ip, regarray[idx]);
+       __instr_regrd_hrm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5737,14 +4146,9 @@ instr_regrd_mrh_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
-
-       TRACE("[Thread %2u] regrd (m = r[h])\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       instr_regarray_dst_hbo_src_hbo_set(t, ip, regarray[idx]);
+       __instr_regrd_mrh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5755,12 +4159,9 @@ instr_regrd_mrm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       instr_regarray_dst_hbo_src_hbo_set(t, ip, regarray[idx]);
+       __instr_regrd_mrm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5771,14 +4172,9 @@ instr_regrd_hri_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
-
-       TRACE("[Thread %2u] regrd (h = r[i])\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       instr_regarray_dst_nbo_src_hbo_set(t, ip, regarray[idx]);
+       __instr_regrd_hri_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5789,14 +4185,9 @@ instr_regrd_mri_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx;
-
-       TRACE("[Thread %2u] regrd (m = r[i])\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       instr_regarray_dst_hbo_src_hbo_set(t, ip, regarray[idx]);
+       __instr_regrd_mri_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5807,15 +4198,9 @@ instr_regwr_rhh_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[h] = h)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       src = instr_regarray_src_nbo(t, ip);
-       regarray[idx] = src;
+       __instr_regwr_rhh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5826,15 +4211,9 @@ instr_regwr_rhm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[h] = m)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       src = instr_regarray_src_hbo(t, ip);
-       regarray[idx] = src;
+       __instr_regwr_rhm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5845,15 +4224,9 @@ instr_regwr_rmh_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[m] = h)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       src = instr_regarray_src_nbo(t, ip);
-       regarray[idx] = src;
+       __instr_regwr_rmh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5864,15 +4237,9 @@ instr_regwr_rmm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[m] = m)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       src = instr_regarray_src_hbo(t, ip);
-       regarray[idx] = src;
+       __instr_regwr_rmm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5883,15 +4250,9 @@ instr_regwr_rhi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[h] = i)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       src = ip->regarray.dstsrc_val;
-       regarray[idx] = src;
+       __instr_regwr_rhi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5902,15 +4263,9 @@ instr_regwr_rmi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[m] = i)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       src = ip->regarray.dstsrc_val;
-       regarray[idx] = src;
+       __instr_regwr_rmi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5921,15 +4276,9 @@ instr_regwr_rih_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[i] = h)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       src = instr_regarray_src_nbo(t, ip);
-       regarray[idx] = src;
+       __instr_regwr_rih_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5940,15 +4289,9 @@ instr_regwr_rim_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[i] = m)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       src = instr_regarray_src_hbo(t, ip);
-       regarray[idx] = src;
+       __instr_regwr_rim_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5959,15 +4302,9 @@ instr_regwr_rii_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regwr (r[i] = i)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       src = ip->regarray.dstsrc_val;
-       regarray[idx] = src;
+       __instr_regwr_rii_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5978,15 +4315,9 @@ instr_regadd_rhh_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[h] += h)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       src = instr_regarray_src_nbo(t, ip);
-       regarray[idx] += src;
+       __instr_regadd_rhh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -5997,15 +4328,9 @@ instr_regadd_rhm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[h] += m)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       src = instr_regarray_src_hbo(t, ip);
-       regarray[idx] += src;
+       __instr_regadd_rhm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6016,15 +4341,9 @@ instr_regadd_rmh_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[m] += h)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       src = instr_regarray_src_nbo(t, ip);
-       regarray[idx] += src;
+       __instr_regadd_rmh_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6035,15 +4354,9 @@ instr_regadd_rmm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[m] += m)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       src = instr_regarray_src_hbo(t, ip);
-       regarray[idx] += src;
+       __instr_regadd_rmm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6054,15 +4367,9 @@ instr_regadd_rhi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[h] += i)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_nbo(p, t, ip);
-       src = ip->regarray.dstsrc_val;
-       regarray[idx] += src;
+       __instr_regadd_rhi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6073,15 +4380,9 @@ instr_regadd_rmi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[m] += i)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_hbo(p, t, ip);
-       src = ip->regarray.dstsrc_val;
-       regarray[idx] += src;
+       __instr_regadd_rmi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6092,15 +4393,9 @@ instr_regadd_rih_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[i] += h)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       src = instr_regarray_src_nbo(t, ip);
-       regarray[idx] += src;
+       __instr_regadd_rih_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6111,15 +4406,9 @@ instr_regadd_rim_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[i] += m)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       src = instr_regarray_src_hbo(t, ip);
-       regarray[idx] += src;
+       __instr_regadd_rim_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6130,15 +4419,9 @@ instr_regadd_rii_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       uint64_t *regarray, idx, src;
-
-       TRACE("[Thread %2u] regadd (r[i] += i)\n", p->thread_id);
 
        /* Structs. */
-       regarray = instr_regarray_regarray(p, ip);
-       idx = instr_regarray_idx_imm(p, ip);
-       src = ip->regarray.dstsrc_val;
-       regarray[idx] += src;
+       __instr_regadd_rii_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6171,6 +4454,8 @@ instr_metprefetch_translate(struct rte_swx_pipeline *p,
        /* METPREFETCH_H, METPREFETCH_M. */
        fidx = struct_field_parse(p, action, idx, &idx_struct_id);
        if (fidx) {
+               CHECK(!fidx->var_size, EINVAL);
+
                instr->type = INSTR_METPREFETCH_M;
                if (idx[0] == 'h')
                        instr->type = INSTR_METPREFETCH_H;
@@ -6216,14 +4501,19 @@ instr_meter_translate(struct rte_swx_pipeline *p,
 
        flength = struct_field_parse(p, action, length, &length_struct_id);
        CHECK(flength, EINVAL);
+       CHECK(!flength->var_size, EINVAL);
 
        fcin = struct_field_parse(p, action, color_in, &color_in_struct_id);
 
        fcout = struct_field_parse(p, NULL, color_out, &color_out_struct_id);
        CHECK(fcout, EINVAL);
+       CHECK(!fcout->var_size, EINVAL);
 
        /* index = HMEFT, length = HMEFT, color_in = MEFT, color_out = MEF. */
        if (fidx && fcin) {
+               CHECK(!fidx->var_size, EINVAL);
+               CHECK(!fcin->var_size, EINVAL);
+
                instr->type = INSTR_METER_MMM;
                if (idx[0] == 'h' && length[0] == 'h')
                        instr->type = INSTR_METER_HHM;
@@ -6249,13 +4539,15 @@ instr_meter_translate(struct rte_swx_pipeline *p,
                instr->meter.color_out.struct_id = (uint8_t)color_out_struct_id;
                instr->meter.color_out.n_bits = fcout->n_bits;
                instr->meter.color_out.offset = fcout->offset / 8;
-
-               return 0;
        }
 
        /* index = HMEFT, length = HMEFT, color_in = I, color_out = MEF. */
        if (fidx && !fcin) {
-               uint32_t color_in_val = strtoul(color_in, &color_in, 0);
+               uint32_t color_in_val;
+
+               CHECK(!fidx->var_size, EINVAL);
+
+               color_in_val = strtoul(color_in, &color_in, 0);
                CHECK(!color_in[0], EINVAL);
 
                instr->type = INSTR_METER_MMI;
@@ -6281,8 +4573,6 @@ instr_meter_translate(struct rte_swx_pipeline *p,
                instr->meter.color_out.struct_id = (uint8_t)color_out_struct_id;
                instr->meter.color_out.n_bits = fcout->n_bits;
                instr->meter.color_out.offset = fcout->offset / 8;
-
-               return 0;
        }
 
        /* index = I, length = HMEFT, color_in = MEFT, color_out = MEF. */
@@ -6292,6 +4582,8 @@ instr_meter_translate(struct rte_swx_pipeline *p,
                idx_val = strtoul(idx, &idx, 0);
                CHECK(!idx[0], EINVAL);
 
+               CHECK(!fcin->var_size, EINVAL);
+
                instr->type = INSTR_METER_IMM;
                if (length[0] == 'h')
                        instr->type = INSTR_METER_IHM;
@@ -6311,8 +4603,6 @@ instr_meter_translate(struct rte_swx_pipeline *p,
                instr->meter.color_out.struct_id = (uint8_t)color_out_struct_id;
                instr->meter.color_out.n_bits = fcout->n_bits;
                instr->meter.color_out.offset = fcout->offset / 8;
-
-               return 0;
        }
 
        /* index = I, length = HMEFT, color_in = I, color_out = MEF. */
@@ -6342,112 +4632,9 @@ instr_meter_translate(struct rte_swx_pipeline *p,
                instr->meter.color_out.struct_id = (uint8_t)color_out_struct_id;
                instr->meter.color_out.n_bits = fcout->n_bits;
                instr->meter.color_out.offset = fcout->offset / 8;
-
-               return 0;
        }
 
-       CHECK(0, EINVAL);
-}
-
-static inline struct meter *
-instr_meter_idx_hbo(struct rte_swx_pipeline *p, struct thread *t, struct instruction *ip)
-{
-       struct metarray_runtime *r = &p->metarray_runtime[ip->meter.metarray_id];
-
-       uint8_t *idx_struct = t->structs[ip->meter.idx.struct_id];
-       uint64_t *idx64_ptr = (uint64_t *)&idx_struct[ip->meter.idx.offset];
-       uint64_t idx64 = *idx64_ptr;
-       uint64_t idx64_mask = UINT64_MAX >> (64 - (ip)->meter.idx.n_bits);
-       uint64_t idx = idx64 & idx64_mask & r->size_mask;
-
-       return &r->metarray[idx];
-}
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-static inline struct meter *
-instr_meter_idx_nbo(struct rte_swx_pipeline *p, struct thread *t, struct instruction *ip)
-{
-       struct metarray_runtime *r = &p->metarray_runtime[ip->meter.metarray_id];
-
-       uint8_t *idx_struct = t->structs[ip->meter.idx.struct_id];
-       uint64_t *idx64_ptr = (uint64_t *)&idx_struct[ip->meter.idx.offset];
-       uint64_t idx64 = *idx64_ptr;
-       uint64_t idx = (ntoh64(idx64) >> (64 - ip->meter.idx.n_bits)) & r->size_mask;
-
-       return &r->metarray[idx];
-}
-
-#else
-
-#define instr_meter_idx_nbo instr_meter_idx_hbo
-
-#endif
-
-static inline struct meter *
-instr_meter_idx_imm(struct rte_swx_pipeline *p, struct instruction *ip)
-{
-       struct metarray_runtime *r = &p->metarray_runtime[ip->meter.metarray_id];
-
-       uint64_t idx =  ip->meter.idx_val & r->size_mask;
-
-       return &r->metarray[idx];
-}
-
-static inline uint32_t
-instr_meter_length_hbo(struct thread *t, struct instruction *ip)
-{
-       uint8_t *src_struct = t->structs[ip->meter.length.struct_id];
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[ip->meter.length.offset];
-       uint64_t src64 = *src64_ptr;
-       uint64_t src64_mask = UINT64_MAX >> (64 - (ip)->meter.length.n_bits);
-       uint64_t src = src64 & src64_mask;
-
-       return (uint32_t)src;
-}
-
-#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
-
-static inline uint32_t
-instr_meter_length_nbo(struct thread *t, struct instruction *ip)
-{
-       uint8_t *src_struct = t->structs[ip->meter.length.struct_id];
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[ip->meter.length.offset];
-       uint64_t src64 = *src64_ptr;
-       uint64_t src = ntoh64(src64) >> (64 - ip->meter.length.n_bits);
-
-       return (uint32_t)src;
-}
-
-#else
-
-#define instr_meter_length_nbo instr_meter_length_hbo
-
-#endif
-
-static inline enum rte_color
-instr_meter_color_in_hbo(struct thread *t, struct instruction *ip)
-{
-       uint8_t *src_struct = t->structs[ip->meter.color_in.struct_id];
-       uint64_t *src64_ptr = (uint64_t *)&src_struct[ip->meter.color_in.offset];
-       uint64_t src64 = *src64_ptr;
-       uint64_t src64_mask = UINT64_MAX >> (64 - ip->meter.color_in.n_bits);
-       uint64_t src = src64 & src64_mask;
-
-       return (enum rte_color)src;
-}
-
-static inline void
-instr_meter_color_out_hbo_set(struct thread *t, struct instruction *ip, enum rte_color color_out)
-{
-       uint8_t *dst_struct = t->structs[ip->meter.color_out.struct_id];
-       uint64_t *dst64_ptr = (uint64_t *)&dst_struct[ip->meter.color_out.offset];
-       uint64_t dst64 = *dst64_ptr;
-       uint64_t dst64_mask = UINT64_MAX >> (64 - ip->meter.color_out.n_bits);
-
-       uint64_t src = (uint64_t)color_out;
-
-       *dst64_ptr = (dst64 & ~dst64_mask) | (src & dst64_mask);
+       return 0;
 }
 
 static inline void
@@ -6455,13 +4642,9 @@ instr_metprefetch_h_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-
-       TRACE("[Thread %2u] metprefetch (h)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_nbo(p, t, ip);
-       rte_prefetch0(m);
+       __instr_metprefetch_h_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6472,13 +4655,9 @@ instr_metprefetch_m_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-
-       TRACE("[Thread %2u] metprefetch (m)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_hbo(p, t, ip);
-       rte_prefetch0(m);
+       __instr_metprefetch_m_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6489,13 +4668,9 @@ instr_metprefetch_i_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-
-       TRACE("[Thread %2u] metprefetch (i)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_imm(p, ip);
-       rte_prefetch0(m);
+       __instr_metprefetch_i_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6506,35 +4681,9 @@ instr_meter_hhm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (hhm)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_nbo(p, t, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_nbo(t, ip);
-       color_in = instr_meter_color_in_hbo(t, ip);
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_hhm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6545,35 +4694,9 @@ instr_meter_hhi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (hhi)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_nbo(p, t, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_nbo(t, ip);
-       color_in = (enum rte_color)ip->meter.color_in_val;
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_hhi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6584,73 +4707,22 @@ instr_meter_hmm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (hmm)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_nbo(p, t, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_hbo(t, ip);
-       color_in = instr_meter_color_in_hbo(t, ip);
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_hmm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
 }
+
 static inline void
 instr_meter_hmi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (hmi)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_nbo(p, t, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_hbo(t, ip);
-       color_in = (enum rte_color)ip->meter.color_in_val;
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_hmi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6661,35 +4733,9 @@ instr_meter_mhm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (mhm)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_hbo(p, t, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_nbo(t, ip);
-       color_in = instr_meter_color_in_hbo(t, ip);
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_mhm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6700,35 +4746,9 @@ instr_meter_mhi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (mhi)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_hbo(p, t, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_nbo(t, ip);
-       color_in = (enum rte_color)ip->meter.color_in_val;
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_mhi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6739,35 +4759,9 @@ instr_meter_mmm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (mmm)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_hbo(p, t, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_hbo(t, ip);
-       color_in = instr_meter_color_in_hbo(t, ip);
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_mmm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6778,35 +4772,9 @@ instr_meter_mmi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (mmi)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_hbo(p, t, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_hbo(t, ip);
-       color_in = (enum rte_color)ip->meter.color_in_val;
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_mmi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6817,35 +4785,9 @@ instr_meter_ihm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (ihm)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_imm(p, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_nbo(t, ip);
-       color_in = instr_meter_color_in_hbo(t, ip);
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_ihm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6856,35 +4798,9 @@ instr_meter_ihi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (ihi)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_imm(p, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_nbo(t, ip);
-       color_in = (enum rte_color)ip->meter.color_in_val;
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_ihi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6895,73 +4811,22 @@ instr_meter_imm_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (imm)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_imm(p, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_hbo(t, ip);
-       color_in = instr_meter_color_in_hbo(t, ip);
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_imm_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
 }
+
 static inline void
 instr_meter_imi_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       struct meter *m;
-       uint64_t time, n_pkts, n_bytes;
-       uint32_t length;
-       enum rte_color color_in, color_out;
-
-       TRACE("[Thread %2u] meter (imi)\n", p->thread_id);
 
        /* Structs. */
-       m = instr_meter_idx_imm(p, ip);
-       rte_prefetch0(m->n_pkts);
-       time = rte_get_tsc_cycles();
-       length = instr_meter_length_hbo(t, ip);
-       color_in = (enum rte_color)ip->meter.color_in_val;
-
-       color_out = rte_meter_trtcm_color_aware_check(&m->m,
-               &m->profile->profile,
-               time,
-               length,
-               color_in);
-
-       color_out &= m->color_mask;
-
-       n_pkts = m->n_pkts[color_out];
-       n_bytes = m->n_bytes[color_out];
-
-       instr_meter_color_out_hbo_set(t, ip, color_out);
-
-       m->n_pkts[color_out] = n_pkts + 1;
-       m->n_bytes[color_out] = n_bytes + length;
+       __instr_meter_imi_exec(p, t, ip);
 
        /* Thread. */
        thread_ip_inc(p);
@@ -6970,9 +4835,6 @@ instr_meter_imi_exec(struct rte_swx_pipeline *p)
 /*
  * jmp.
  */
-static struct action *
-action_find(struct rte_swx_pipeline *p, const char *name);
-
 static int
 instr_jmp_translate(struct rte_swx_pipeline *p __rte_unused,
                    struct action *action __rte_unused,
@@ -7139,10 +5001,13 @@ instr_jmp_eq_translate(struct rte_swx_pipeline *p,
 
        fa = struct_field_parse(p, action, a, &a_struct_id);
        CHECK(fa, EINVAL);
+       CHECK(!fa->var_size, EINVAL);
 
        /* JMP_EQ, JMP_EQ_MH, JMP_EQ_HM, JMP_EQ_HH. */
        fb = struct_field_parse(p, action, b, &b_struct_id);
        if (fb) {
+               CHECK(!fb->var_size, EINVAL);
+
                instr->type = INSTR_JMP_EQ;
                if (a[0] != 'h' && b[0] == 'h')
                        instr->type = INSTR_JMP_EQ_MH;
@@ -7196,10 +5061,13 @@ instr_jmp_neq_translate(struct rte_swx_pipeline *p,
 
        fa = struct_field_parse(p, action, a, &a_struct_id);
        CHECK(fa, EINVAL);
+       CHECK(!fa->var_size, EINVAL);
 
        /* JMP_NEQ, JMP_NEQ_MH, JMP_NEQ_HM, JMP_NEQ_HH. */
        fb = struct_field_parse(p, action, b, &b_struct_id);
        if (fb) {
+               CHECK(!fb->var_size, EINVAL);
+
                instr->type = INSTR_JMP_NEQ;
                if (a[0] != 'h' && b[0] == 'h')
                        instr->type = INSTR_JMP_NEQ_MH;
@@ -7253,10 +5121,13 @@ instr_jmp_lt_translate(struct rte_swx_pipeline *p,
 
        fa = struct_field_parse(p, action, a, &a_struct_id);
        CHECK(fa, EINVAL);
+       CHECK(!fa->var_size, EINVAL);
 
        /* JMP_LT, JMP_LT_MH, JMP_LT_HM, JMP_LT_HH. */
        fb = struct_field_parse(p, action, b, &b_struct_id);
        if (fb) {
+               CHECK(!fb->var_size, EINVAL);
+
                instr->type = INSTR_JMP_LT;
                if (a[0] == 'h' && b[0] != 'h')
                        instr->type = INSTR_JMP_LT_HM;
@@ -7310,10 +5181,13 @@ instr_jmp_gt_translate(struct rte_swx_pipeline *p,
 
        fa = struct_field_parse(p, action, a, &a_struct_id);
        CHECK(fa, EINVAL);
+       CHECK(!fa->var_size, EINVAL);
 
        /* JMP_GT, JMP_GT_MH, JMP_GT_HM, JMP_GT_HH. */
        fb = struct_field_parse(p, action, b, &b_struct_id);
        if (fb) {
+               CHECK(!fb->var_size, EINVAL);
+
                instr->type = INSTR_JMP_GT;
                if (a[0] == 'h' && b[0] != 'h')
                        instr->type = INSTR_JMP_GT_HM;
@@ -7767,6 +5641,14 @@ instr_translate(struct rte_swx_pipeline *p,
                                                   instr,
                                                   data);
 
+       if (!strcmp(tokens[tpos], "lookahead"))
+               return instr_hdr_lookahead_translate(p,
+                                                    action,
+                                                    &tokens[tpos],
+                                                    n_tokens - tpos,
+                                                    instr,
+                                                    data);
+
        if (!strcmp(tokens[tpos], "emit"))
                return instr_hdr_emit_translate(p,
                                                action,
@@ -7927,6 +5809,22 @@ instr_translate(struct rte_swx_pipeline *p,
                                             instr,
                                             data);
 
+       if (!strcmp(tokens[tpos], "learn"))
+               return instr_learn_translate(p,
+                                            action,
+                                            &tokens[tpos],
+                                            n_tokens - tpos,
+                                            instr,
+                                            data);
+
+       if (!strcmp(tokens[tpos], "forget"))
+               return instr_forget_translate(p,
+                                             action,
+                                             &tokens[tpos],
+                                             n_tokens - tpos,
+                                             instr,
+                                             data);
+
        if (!strcmp(tokens[tpos], "extern"))
                return instr_extern_translate(p,
                                              action,
@@ -8031,7 +5929,7 @@ instr_translate(struct rte_swx_pipeline *p,
                                              instr,
                                              data);
 
-       CHECK(0, EINVAL);
+       return -EINVAL;
 }
 
 static struct instruction_data *
@@ -8077,7 +5975,7 @@ instr_label_check(struct instruction_data *instruction_data,
                        continue;
 
                for (j = i + 1; j < n_instructions; j++)
-                       CHECK(strcmp(label, data[j].label), EINVAL);
+                       CHECK(strcmp(label, instruction_data[j].label), EINVAL);
        }
 
        /* Get users for each instruction label. */
@@ -8405,7 +6303,7 @@ instr_pattern_mov_all_validate_search(struct rte_swx_pipeline *p,
                return 0;
 
        h = header_find_by_struct_id(p, instr[0].mov.dst.struct_id);
-       if (!h)
+       if (!h || h->st->var_size)
                return 0;
 
        for (src_field_id = 0; src_field_id < a->st->n_fields; src_field_id++)
@@ -8725,13 +6623,14 @@ instruction_config(struct rte_swx_pipeline *p,
 
        if (a) {
                a->instructions = instr;
+               a->instruction_data = data;
                a->n_instructions = n_instructions;
        } else {
                p->instructions = instr;
+               p->instruction_data = data;
                p->n_instructions = n_instructions;
        }
 
-       free(data);
        return 0;
 
 error:
@@ -8740,8 +6639,6 @@ error:
        return err;
 }
 
-typedef void (*instr_exec_t)(struct rte_swx_pipeline *);
-
 static instr_exec_t instruction_table[] = {
        [INSTR_RX] = instr_rx_exec,
        [INSTR_TX] = instr_tx_exec,
@@ -8755,6 +6652,8 @@ static instr_exec_t instruction_table[] = {
        [INSTR_HDR_EXTRACT6] = instr_hdr_extract6_exec,
        [INSTR_HDR_EXTRACT7] = instr_hdr_extract7_exec,
        [INSTR_HDR_EXTRACT8] = instr_hdr_extract8_exec,
+       [INSTR_HDR_EXTRACT_M] = instr_hdr_extract_m_exec,
+       [INSTR_HDR_LOOKAHEAD] = instr_hdr_lookahead_exec,
 
        [INSTR_HDR_EMIT] = instr_hdr_emit_exec,
        [INSTR_HDR_EMIT_TX] = instr_hdr_emit_tx_exec,
@@ -8884,7 +6783,12 @@ static instr_exec_t instruction_table[] = {
        [INSTR_METER_IMI] = instr_meter_imi_exec,
 
        [INSTR_TABLE] = instr_table_exec,
+       [INSTR_TABLE_AF] = instr_table_af_exec,
        [INSTR_SELECTOR] = instr_selector_exec,
+       [INSTR_LEARNER] = instr_learner_exec,
+       [INSTR_LEARNER_AF] = instr_learner_af_exec,
+       [INSTR_LEARNER_LEARN] = instr_learn_exec,
+       [INSTR_LEARNER_FORGET] = instr_forget_exec,
        [INSTR_EXTERN_OBJ] = instr_extern_obj_exec,
        [INSTR_EXTERN_FUNC] = instr_extern_func_exec,
 
@@ -8925,12 +6829,41 @@ static instr_exec_t instruction_table[] = {
        [INSTR_RETURN] = instr_return_exec,
 };
 
+static int
+instruction_table_build(struct rte_swx_pipeline *p)
+{
+       p->instruction_table = calloc(RTE_SWX_PIPELINE_INSTRUCTION_TABLE_SIZE_MAX,
+                                     sizeof(struct instr_exec_t *));
+       if (!p->instruction_table)
+               return -EINVAL;
+
+       memcpy(p->instruction_table, instruction_table, sizeof(instruction_table));
+
+       return 0;
+}
+
+static void
+instruction_table_build_free(struct rte_swx_pipeline *p)
+{
+       if (!p->instruction_table)
+               return;
+
+       free(p->instruction_table);
+       p->instruction_table = NULL;
+}
+
+static void
+instruction_table_free(struct rte_swx_pipeline *p)
+{
+       instruction_table_build_free(p);
+}
+
 static inline void
 instr_exec(struct rte_swx_pipeline *p)
 {
        struct thread *t = &p->threads[p->thread_id];
        struct instruction *ip = t->ip;
-       instr_exec_t instr = instruction_table[ip->type];
+       instr_exec_t instr = p->instruction_table[ip->type];
 
        instr(p);
 }
@@ -8980,6 +6913,42 @@ action_field_parse(struct action *action, const char *name)
        return action_field_find(action, &name[2]);
 }
 
+static int
+action_has_nbo_args(struct action *a)
+{
+       uint32_t i;
+
+       /* Return if the action does not have any args. */
+       if (!a->st)
+               return 0; /* FALSE */
+
+       for (i = 0; i < a->st->n_fields; i++)
+               if (a->args_endianness[i])
+                       return 1; /* TRUE */
+
+       return 0; /* FALSE */
+}
+
+static int
+action_does_learning(struct action *a)
+{
+       uint32_t i;
+
+       for (i = 0; i < a->n_instructions; i++)
+               switch (a->instructions[i].type) {
+               case INSTR_LEARNER_LEARN:
+                       return 1; /* TRUE */
+
+               case INSTR_LEARNER_FORGET:
+                       return 1; /* TRUE */
+
+               default:
+                       continue;
+               }
+
+       return 0; /* FALSE */
+}
+
 int
 rte_swx_pipeline_action_config(struct rte_swx_pipeline *p,
                               const char *name,
@@ -8987,7 +6956,7 @@ rte_swx_pipeline_action_config(struct rte_swx_pipeline *p,
                               const char **instructions,
                               uint32_t n_instructions)
 {
-       struct struct_type *args_struct_type;
+       struct struct_type *args_struct_type = NULL;
        struct action *a;
        int err;
 
@@ -9000,8 +6969,7 @@ rte_swx_pipeline_action_config(struct rte_swx_pipeline *p,
                CHECK_NAME(args_struct_type_name, EINVAL);
                args_struct_type = struct_type_find(p, args_struct_type_name);
                CHECK(args_struct_type, EINVAL);
-       } else {
-               args_struct_type = NULL;
+               CHECK(!args_struct_type->var_size, EINVAL);
        }
 
        /* Node allocation. */
@@ -9040,19 +7008,26 @@ action_build(struct rte_swx_pipeline *p)
 {
        struct action *action;
 
-       p->action_instructions = calloc(p->n_actions,
-                                       sizeof(struct instruction *));
+       /* p->action_instructions. */
+       p->action_instructions = calloc(p->n_actions, sizeof(struct instruction *));
        CHECK(p->action_instructions, ENOMEM);
 
        TAILQ_FOREACH(action, &p->actions, node)
                p->action_instructions[action->id] = action->instructions;
 
+       /* p->action_funcs. */
+       p->action_funcs = calloc(p->n_actions, sizeof(action_func_t));
+       CHECK(p->action_funcs, ENOMEM);
+
        return 0;
 }
 
 static void
 action_build_free(struct rte_swx_pipeline *p)
 {
+       free(p->action_funcs);
+       p->action_funcs = NULL;
+
        free(p->action_instructions);
        p->action_instructions = NULL;
 }
@@ -9070,6 +7045,7 @@ action_free(struct rte_swx_pipeline *p)
                        break;
 
                TAILQ_REMOVE(&p->actions, action, node);
+               free(action->instruction_data);
                free(action->instructions);
                free(action);
        }
@@ -9250,6 +7226,9 @@ table_match_fields_check(struct rte_swx_pipeline *p,
                        goto end;
                }
 
+               if (header)
+                       *header = NULL;
+
                return 0;
        }
 
@@ -9265,7 +7244,7 @@ table_match_fields_check(struct rte_swx_pipeline *p,
         */
        hf = header_field_parse(p, params->fields[0].name, &h0);
        mf = metadata_field_parse(p, params->fields[0].name);
-       if (!hf && !mf) {
+       if ((!hf && !mf) || (hf && hf->var_size)) {
                status = -EINVAL;
                goto end;
        }
@@ -9277,7 +7256,7 @@ table_match_fields_check(struct rte_swx_pipeline *p,
                        struct header *h;
 
                        hf = header_field_parse(p, params->fields[i].name, &h);
-                       if (!hf || (h->id != h0->id)) {
+                       if (!hf || (h->id != h0->id) || hf->var_size) {
                                status = -EINVAL;
                                goto end;
                        }
@@ -9322,7 +7301,7 @@ rte_swx_pipeline_table_config(struct rte_swx_pipeline *p,
                              uint32_t size)
 {
        struct table_type *type;
-       struct table *t;
+       struct table *t = NULL;
        struct action *default_action;
        struct header *header = NULL;
        uint32_t action_data_size_max = 0, i;
@@ -9333,6 +7312,7 @@ rte_swx_pipeline_table_config(struct rte_swx_pipeline *p,
        CHECK_NAME(name, EINVAL);
        CHECK(!table_find(p, name), EEXIST);
        CHECK(!selector_find(p, name), EEXIST);
+       CHECK(!learner_find(p, name), EEXIST);
 
        CHECK(params, EINVAL);
 
@@ -9348,15 +7328,23 @@ rte_swx_pipeline_table_config(struct rte_swx_pipeline *p,
                const char *action_name = params->action_names[i];
                struct action *a;
                uint32_t action_data_size;
+               int action_is_for_table_entries = 1, action_is_for_default_entry = 1;
 
                CHECK_NAME(action_name, EINVAL);
 
                a = action_find(p, action_name);
                CHECK(a, EINVAL);
+               CHECK(!action_does_learning(a), EINVAL);
 
                action_data_size = a->st ? a->st->n_bits / 8 : 0;
                if (action_data_size > action_data_size_max)
                        action_data_size_max = action_data_size;
+
+               if (params->action_is_for_table_entries)
+                       action_is_for_table_entries = params->action_is_for_table_entries[i];
+               if (params->action_is_for_default_entry)
+                       action_is_for_default_entry = params->action_is_for_default_entry[i];
+               CHECK(action_is_for_table_entries || action_is_for_default_entry, EINVAL);
        }
 
        CHECK_NAME(params->default_action_name, EINVAL);
@@ -9365,6 +7353,9 @@ rte_swx_pipeline_table_config(struct rte_swx_pipeline *p,
                            params->default_action_name))
                        break;
        CHECK(i < params->n_actions, EINVAL);
+       CHECK(!params->action_is_for_default_entry || params->action_is_for_default_entry[i],
+             EINVAL);
+
        default_action = action_find(p, params->default_action_name);
        CHECK((default_action->st && params->default_action_data) ||
              !params->default_action_data, EINVAL);
@@ -9388,31 +7379,31 @@ rte_swx_pipeline_table_config(struct rte_swx_pipeline *p,
 
        /* Memory allocation. */
        t = calloc(1, sizeof(struct table));
-       CHECK(t, ENOMEM);
+       if (!t)
+               goto nomem;
 
        t->fields = calloc(params->n_fields, sizeof(struct match_field));
-       if (!t->fields) {
-               free(t);
-               CHECK(0, ENOMEM);
-       }
+       if (!t->fields)
+               goto nomem;
 
        t->actions = calloc(params->n_actions, sizeof(struct action *));
-       if (!t->actions) {
-               free(t->fields);
-               free(t);
-               CHECK(0, ENOMEM);
-       }
+       if (!t->actions)
+               goto nomem;
 
        if (action_data_size_max) {
                t->default_action_data = calloc(1, action_data_size_max);
-               if (!t->default_action_data) {
-                       free(t->actions);
-                       free(t->fields);
-                       free(t);
-                       CHECK(0, ENOMEM);
-               }
+               if (!t->default_action_data)
+                       goto nomem;
        }
 
+       t->action_is_for_table_entries = calloc(params->n_actions, sizeof(int));
+       if (!t->action_is_for_table_entries)
+               goto nomem;
+
+       t->action_is_for_default_entry = calloc(params->n_actions, sizeof(int));
+       if (!t->action_is_for_default_entry)
+               goto nomem;
+
        /* Node initialization. */
        strcpy(t->name, name);
        if (args && args[0])
@@ -9431,8 +7422,18 @@ rte_swx_pipeline_table_config(struct rte_swx_pipeline *p,
        t->n_fields = params->n_fields;
        t->header = header;
 
-       for (i = 0; i < params->n_actions; i++)
+       for (i = 0; i < params->n_actions; i++) {
+               int action_is_for_table_entries = 1, action_is_for_default_entry = 1;
+
+               if (params->action_is_for_table_entries)
+                       action_is_for_table_entries = params->action_is_for_table_entries[i];
+               if (params->action_is_for_default_entry)
+                       action_is_for_default_entry = params->action_is_for_default_entry[i];
+
                t->actions[i] = action_find(p, params->action_names[i]);
+               t->action_is_for_table_entries[i] = action_is_for_table_entries;
+               t->action_is_for_default_entry[i] = action_is_for_default_entry;
+       }
        t->default_action = default_action;
        if (default_action->st)
                memcpy(t->default_action_data,
@@ -9450,6 +7451,19 @@ rte_swx_pipeline_table_config(struct rte_swx_pipeline *p,
        p->n_tables++;
 
        return 0;
+
+nomem:
+       if (!t)
+               return -ENOMEM;
+
+       free(t->action_is_for_default_entry);
+       free(t->action_is_for_table_entries);
+       free(t->default_action_data);
+       free(t->actions);
+       free(t->fields);
+       free(t);
+
+       return -ENOMEM;
 }
 
 static struct rte_swx_table_params *
@@ -9594,1607 +7608,4895 @@ table_build(struct rte_swx_pipeline *p)
        return 0;
 }
 
-static void
-table_build_free(struct rte_swx_pipeline *p)
+static void
+table_build_free(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               uint32_t j;
+
+               if (!t->tables)
+                       continue;
+
+               for (j = 0; j < p->n_tables; j++) {
+                       struct table_runtime *r = &t->tables[j];
+
+                       free(r->mailbox);
+               }
+
+               free(t->tables);
+               t->tables = NULL;
+       }
+
+       if (p->table_stats) {
+               for (i = 0; i < p->n_tables; i++)
+                       free(p->table_stats[i].n_pkts_action);
+
+               free(p->table_stats);
+       }
+}
+
+static void
+table_free(struct rte_swx_pipeline *p)
+{
+       table_build_free(p);
+
+       /* Tables. */
+       for ( ; ; ) {
+               struct table *elem;
+
+               elem = TAILQ_FIRST(&p->tables);
+               if (!elem)
+                       break;
+
+               TAILQ_REMOVE(&p->tables, elem, node);
+               free(elem->fields);
+               free(elem->actions);
+               free(elem->default_action_data);
+               free(elem);
+       }
+
+       /* Table types. */
+       for ( ; ; ) {
+               struct table_type *elem;
+
+               elem = TAILQ_FIRST(&p->table_types);
+               if (!elem)
+                       break;
+
+               TAILQ_REMOVE(&p->table_types, elem, node);
+               free(elem);
+       }
+}
+
+/*
+ * Selector.
+ */
+static struct selector *
+selector_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct selector *s;
+
+       TAILQ_FOREACH(s, &p->selectors, node)
+               if (strcmp(s->name, name) == 0)
+                       return s;
+
+       return NULL;
+}
+
+static struct selector *
+selector_find_by_id(struct rte_swx_pipeline *p, uint32_t id)
+{
+       struct selector *s = NULL;
+
+       TAILQ_FOREACH(s, &p->selectors, node)
+               if (s->id == id)
+                       return s;
+
+       return NULL;
+}
+
+static int
+selector_fields_check(struct rte_swx_pipeline *p,
+                     struct rte_swx_pipeline_selector_params *params,
+                     struct header **header)
+{
+       struct header *h0 = NULL;
+       struct field *hf, *mf;
+       uint32_t i;
+
+       /* Return if no selector fields. */
+       if (!params->n_selector_fields || !params->selector_field_names)
+               return -EINVAL;
+
+       /* Check that all the selector fields either belong to the same header
+        * or are all meta-data fields.
+        */
+       hf = header_field_parse(p, params->selector_field_names[0], &h0);
+       mf = metadata_field_parse(p, params->selector_field_names[0]);
+       if (!hf && !mf)
+               return -EINVAL;
+
+       for (i = 1; i < params->n_selector_fields; i++)
+               if (h0) {
+                       struct header *h;
+
+                       hf = header_field_parse(p, params->selector_field_names[i], &h);
+                       if (!hf || (h->id != h0->id))
+                               return -EINVAL;
+               } else {
+                       mf = metadata_field_parse(p, params->selector_field_names[i]);
+                       if (!mf)
+                               return -EINVAL;
+               }
+
+       /* Check that there are no duplicated match fields. */
+       for (i = 0; i < params->n_selector_fields; i++) {
+               const char *field_name = params->selector_field_names[i];
+               uint32_t j;
+
+               for (j = i + 1; j < params->n_selector_fields; j++)
+                       if (!strcmp(params->selector_field_names[j], field_name))
+                               return -EINVAL;
+       }
+
+       /* Return. */
+       if (header)
+               *header = h0;
+
+       return 0;
+}
+
+int
+rte_swx_pipeline_selector_config(struct rte_swx_pipeline *p,
+                                const char *name,
+                                struct rte_swx_pipeline_selector_params *params)
+{
+       struct selector *s;
+       struct header *selector_header = NULL;
+       struct field *group_id_field, *member_id_field;
+       uint32_t i;
+       int status = 0;
+
+       CHECK(p, EINVAL);
+
+       CHECK_NAME(name, EINVAL);
+       CHECK(!table_find(p, name), EEXIST);
+       CHECK(!selector_find(p, name), EEXIST);
+       CHECK(!learner_find(p, name), EEXIST);
+
+       CHECK(params, EINVAL);
+
+       CHECK_NAME(params->group_id_field_name, EINVAL);
+       group_id_field = metadata_field_parse(p, params->group_id_field_name);
+       CHECK(group_id_field, EINVAL);
+
+       for (i = 0; i < params->n_selector_fields; i++) {
+               const char *field_name = params->selector_field_names[i];
+
+               CHECK_NAME(field_name, EINVAL);
+       }
+       status = selector_fields_check(p, params, &selector_header);
+       if (status)
+               return status;
+
+       CHECK_NAME(params->member_id_field_name, EINVAL);
+       member_id_field = metadata_field_parse(p, params->member_id_field_name);
+       CHECK(member_id_field, EINVAL);
+
+       CHECK(params->n_groups_max, EINVAL);
+
+       CHECK(params->n_members_per_group_max, EINVAL);
+
+       /* Memory allocation. */
+       s = calloc(1, sizeof(struct selector));
+       if (!s) {
+               status = -ENOMEM;
+               goto error;
+       }
+
+       s->selector_fields = calloc(params->n_selector_fields, sizeof(struct field *));
+       if (!s->selector_fields) {
+               status = -ENOMEM;
+               goto error;
+       }
+
+       /* Node initialization. */
+       strcpy(s->name, name);
+
+       s->group_id_field = group_id_field;
+
+       for (i = 0; i < params->n_selector_fields; i++) {
+               const char *field_name = params->selector_field_names[i];
+
+               s->selector_fields[i] = selector_header ?
+                       header_field_parse(p, field_name, NULL) :
+                       metadata_field_parse(p, field_name);
+       }
+
+       s->n_selector_fields = params->n_selector_fields;
+
+       s->selector_header = selector_header;
+
+       s->member_id_field = member_id_field;
+
+       s->n_groups_max = params->n_groups_max;
+
+       s->n_members_per_group_max = params->n_members_per_group_max;
+
+       s->id = p->n_selectors;
+
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->selectors, s, node);
+       p->n_selectors++;
+
+       return 0;
+
+error:
+       if (!s)
+               return status;
+
+       free(s->selector_fields);
+
+       free(s);
+
+       return status;
+}
+
+static void
+selector_params_free(struct rte_swx_table_selector_params *params)
+{
+       if (!params)
+               return;
+
+       free(params->selector_mask);
+
+       free(params);
+}
+
+static struct rte_swx_table_selector_params *
+selector_table_params_get(struct selector *s)
+{
+       struct rte_swx_table_selector_params *params = NULL;
+       struct field *first, *last;
+       uint32_t i;
+
+       /* Memory allocation. */
+       params = calloc(1, sizeof(struct rte_swx_table_selector_params));
+       if (!params)
+               goto error;
+
+       /* Group ID. */
+       params->group_id_offset = s->group_id_field->offset / 8;
+
+       /* Find first (smallest offset) and last (biggest offset) selector fields. */
+       first = s->selector_fields[0];
+       last = s->selector_fields[0];
+
+       for (i = 0; i < s->n_selector_fields; i++) {
+               struct field *f = s->selector_fields[i];
+
+               if (f->offset < first->offset)
+                       first = f;
+
+               if (f->offset > last->offset)
+                       last = f;
+       }
+
+       /* Selector offset and size. */
+       params->selector_offset = first->offset / 8;
+       params->selector_size = (last->offset + last->n_bits - first->offset) / 8;
+
+       /* Memory allocation. */
+       params->selector_mask = calloc(1, params->selector_size);
+       if (!params->selector_mask)
+               goto error;
+
+       /* Selector mask. */
+       for (i = 0; i < s->n_selector_fields; i++) {
+               struct field *f = s->selector_fields[i];
+               uint32_t start = (f->offset - first->offset) / 8;
+               size_t size = f->n_bits / 8;
+
+               memset(&params->selector_mask[start], 0xFF, size);
+       }
+
+       /* Member ID. */
+       params->member_id_offset = s->member_id_field->offset / 8;
+
+       /* Maximum number of groups. */
+       params->n_groups_max = s->n_groups_max;
+
+       /* Maximum number of members per group. */
+       params->n_members_per_group_max = s->n_members_per_group_max;
+
+       return params;
+
+error:
+       selector_params_free(params);
+       return NULL;
+}
+
+static void
+selector_build_free(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               uint32_t j;
+
+               if (!t->selectors)
+                       continue;
+
+               for (j = 0; j < p->n_selectors; j++) {
+                       struct selector_runtime *r = &t->selectors[j];
+
+                       free(r->mailbox);
+               }
+
+               free(t->selectors);
+               t->selectors = NULL;
+       }
+
+       free(p->selector_stats);
+       p->selector_stats = NULL;
+}
+
+static int
+selector_build(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+       int status = 0;
+
+       /* Per pipeline: selector statistics. */
+       p->selector_stats = calloc(p->n_selectors, sizeof(struct selector_statistics));
+       if (!p->selector_stats) {
+               status = -ENOMEM;
+               goto error;
+       }
+
+       /* Per thread: selector run-time. */
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               struct selector *s;
+
+               t->selectors = calloc(p->n_selectors, sizeof(struct selector_runtime));
+               if (!t->selectors) {
+                       status = -ENOMEM;
+                       goto error;
+               }
+
+               TAILQ_FOREACH(s, &p->selectors, node) {
+                       struct selector_runtime *r = &t->selectors[s->id];
+                       uint64_t size;
+
+                       /* r->mailbox. */
+                       size = rte_swx_table_selector_mailbox_size_get();
+                       if (size) {
+                               r->mailbox = calloc(1, size);
+                               if (!r->mailbox) {
+                                       status = -ENOMEM;
+                                       goto error;
+                               }
+                       }
+
+                       /* r->group_id_buffer. */
+                       r->group_id_buffer = &t->structs[p->metadata_struct_id];
+
+                       /* r->selector_buffer. */
+                       r->selector_buffer = s->selector_header ?
+                               &t->structs[s->selector_header->struct_id] :
+                               &t->structs[p->metadata_struct_id];
+
+                       /* r->member_id_buffer. */
+                       r->member_id_buffer = &t->structs[p->metadata_struct_id];
+               }
+       }
+
+       return 0;
+
+error:
+       selector_build_free(p);
+       return status;
+}
+
+static void
+selector_free(struct rte_swx_pipeline *p)
+{
+       selector_build_free(p);
+
+       /* Selector tables. */
+       for ( ; ; ) {
+               struct selector *elem;
+
+               elem = TAILQ_FIRST(&p->selectors);
+               if (!elem)
+                       break;
+
+               TAILQ_REMOVE(&p->selectors, elem, node);
+               free(elem->selector_fields);
+               free(elem);
+       }
+}
+
+/*
+ * Learner table.
+ */
+static struct learner *
+learner_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct learner *l;
+
+       TAILQ_FOREACH(l, &p->learners, node)
+               if (!strcmp(l->name, name))
+                       return l;
+
+       return NULL;
+}
+
+static struct learner *
+learner_find_by_id(struct rte_swx_pipeline *p, uint32_t id)
+{
+       struct learner *l = NULL;
+
+       TAILQ_FOREACH(l, &p->learners, node)
+               if (l->id == id)
+                       return l;
+
+       return NULL;
+}
+
+static int
+learner_match_fields_check(struct rte_swx_pipeline *p,
+                          struct rte_swx_pipeline_learner_params *params,
+                          struct header **header)
+{
+       struct header *h0 = NULL;
+       struct field *hf, *mf;
+       uint32_t i;
+
+       /* Return if no match fields. */
+       if (!params->n_fields || !params->field_names)
+               return -EINVAL;
+
+       /* Check that all the match fields either belong to the same header
+        * or are all meta-data fields.
+        */
+       hf = header_field_parse(p, params->field_names[0], &h0);
+       mf = metadata_field_parse(p, params->field_names[0]);
+       if (!hf && !mf)
+               return -EINVAL;
+
+       for (i = 1; i < params->n_fields; i++)
+               if (h0) {
+                       struct header *h;
+
+                       hf = header_field_parse(p, params->field_names[i], &h);
+                       if (!hf || (h->id != h0->id))
+                               return -EINVAL;
+               } else {
+                       mf = metadata_field_parse(p, params->field_names[i]);
+                       if (!mf)
+                               return -EINVAL;
+               }
+
+       /* Check that there are no duplicated match fields. */
+       for (i = 0; i < params->n_fields; i++) {
+               const char *field_name = params->field_names[i];
+               uint32_t j;
+
+               for (j = i + 1; j < params->n_fields; j++)
+                       if (!strcmp(params->field_names[j], field_name))
+                               return -EINVAL;
+       }
+
+       /* Return. */
+       if (header)
+               *header = h0;
+
+       return 0;
+}
+
+static int
+learner_action_args_check(struct rte_swx_pipeline *p, struct action *a, const char *mf_name)
+{
+       struct struct_type *mst = p->metadata_st, *ast = a->st;
+       struct field *mf, *af;
+       uint32_t mf_pos, i;
+
+       if (!ast) {
+               if (mf_name)
+                       return -EINVAL;
+
+               return 0;
+       }
+
+       /* Check that mf_name is the name of a valid meta-data field. */
+       CHECK_NAME(mf_name, EINVAL);
+       mf = metadata_field_parse(p, mf_name);
+       CHECK(mf, EINVAL);
+
+       /* Check that there are enough meta-data fields, starting with the mf_name field, to cover
+        * all the action arguments.
+        */
+       mf_pos = mf - mst->fields;
+       CHECK(mst->n_fields - mf_pos >= ast->n_fields, EINVAL);
+
+       /* Check that the size of each of the identified meta-data fields matches exactly the size
+        * of the corresponding action argument.
+        */
+       for (i = 0; i < ast->n_fields; i++) {
+               mf = &mst->fields[mf_pos + i];
+               af = &ast->fields[i];
+
+               CHECK(mf->n_bits == af->n_bits, EINVAL);
+       }
+
+       return 0;
+}
+
+static int
+learner_action_learning_check(struct rte_swx_pipeline *p,
+                             struct action *action,
+                             const char **action_names,
+                             uint32_t n_actions)
+{
+       uint32_t i;
+
+       /* For each "learn" instruction of the current action, check that the learned action (i.e.
+        * the action passed as argument to the "learn" instruction) is also enabled for the
+        * current learner table.
+        */
+       for (i = 0; i < action->n_instructions; i++) {
+               struct instruction *instr = &action->instructions[i];
+               uint32_t found = 0, j;
+
+               if (instr->type != INSTR_LEARNER_LEARN)
+                       continue;
+
+               for (j = 0; j < n_actions; j++) {
+                       struct action *a;
+
+                       a = action_find(p, action_names[j]);
+                       if (!a)
+                               return -EINVAL;
+
+                       if (a->id == instr->learn.action_id)
+                               found = 1;
+               }
+
+               if (!found)
+                       return -EINVAL;
+       }
+
+       return 0;
+}
+
+int
+rte_swx_pipeline_learner_config(struct rte_swx_pipeline *p,
+                             const char *name,
+                             struct rte_swx_pipeline_learner_params *params,
+                             uint32_t size,
+                             uint32_t timeout)
+{
+       struct learner *l = NULL;
+       struct action *default_action;
+       struct header *header = NULL;
+       uint32_t action_data_size_max = 0, i;
+       int status = 0;
+
+       CHECK(p, EINVAL);
+
+       CHECK_NAME(name, EINVAL);
+       CHECK(!table_find(p, name), EEXIST);
+       CHECK(!selector_find(p, name), EEXIST);
+       CHECK(!learner_find(p, name), EEXIST);
+
+       CHECK(params, EINVAL);
+
+       /* Match checks. */
+       status = learner_match_fields_check(p, params, &header);
+       if (status)
+               return status;
+
+       /* Action checks. */
+       CHECK(params->n_actions, EINVAL);
+       CHECK(params->action_names, EINVAL);
+       for (i = 0; i < params->n_actions; i++) {
+               const char *action_name = params->action_names[i];
+               struct action *a;
+               uint32_t action_data_size;
+               int action_is_for_table_entries = 1, action_is_for_default_entry = 1;
+
+               CHECK_NAME(action_name, EINVAL);
+
+               a = action_find(p, action_name);
+               CHECK(a, EINVAL);
+
+               status = learner_action_learning_check(p,
+                                                      a,
+                                                      params->action_names,
+                                                      params->n_actions);
+               if (status)
+                       return status;
+
+               action_data_size = a->st ? a->st->n_bits / 8 : 0;
+               if (action_data_size > action_data_size_max)
+                       action_data_size_max = action_data_size;
+
+               if (params->action_is_for_table_entries)
+                       action_is_for_table_entries = params->action_is_for_table_entries[i];
+               if (params->action_is_for_default_entry)
+                       action_is_for_default_entry = params->action_is_for_default_entry[i];
+               CHECK(action_is_for_table_entries || action_is_for_default_entry, EINVAL);
+       }
+
+       CHECK_NAME(params->default_action_name, EINVAL);
+       for (i = 0; i < p->n_actions; i++)
+               if (!strcmp(params->action_names[i],
+                           params->default_action_name))
+                       break;
+       CHECK(i < params->n_actions, EINVAL);
+       CHECK(!params->action_is_for_default_entry || params->action_is_for_default_entry[i],
+             EINVAL);
+
+       default_action = action_find(p, params->default_action_name);
+       CHECK((default_action->st && params->default_action_data) ||
+             !params->default_action_data, EINVAL);
+
+       /* Any other checks. */
+       CHECK(size, EINVAL);
+       CHECK(timeout, EINVAL);
+
+       /* Memory allocation. */
+       l = calloc(1, sizeof(struct learner));
+       if (!l)
+               goto nomem;
+
+       l->fields = calloc(params->n_fields, sizeof(struct field *));
+       if (!l->fields)
+               goto nomem;
+
+       l->actions = calloc(params->n_actions, sizeof(struct action *));
+       if (!l->actions)
+               goto nomem;
+
+       if (action_data_size_max) {
+               l->default_action_data = calloc(1, action_data_size_max);
+               if (!l->default_action_data)
+                       goto nomem;
+       }
+
+       l->action_is_for_table_entries = calloc(params->n_actions, sizeof(int));
+       if (!l->action_is_for_table_entries)
+               goto nomem;
+
+       l->action_is_for_default_entry = calloc(params->n_actions, sizeof(int));
+       if (!l->action_is_for_default_entry)
+               goto nomem;
+
+       /* Node initialization. */
+       strcpy(l->name, name);
+
+       for (i = 0; i < params->n_fields; i++) {
+               const char *field_name = params->field_names[i];
+
+               l->fields[i] = header ?
+                       header_field_parse(p, field_name, NULL) :
+                       metadata_field_parse(p, field_name);
+       }
+
+       l->n_fields = params->n_fields;
+
+       l->header = header;
+
+       for (i = 0; i < params->n_actions; i++) {
+               int action_is_for_table_entries = 1, action_is_for_default_entry = 1;
+
+               if (params->action_is_for_table_entries)
+                       action_is_for_table_entries = params->action_is_for_table_entries[i];
+               if (params->action_is_for_default_entry)
+                       action_is_for_default_entry = params->action_is_for_default_entry[i];
+
+               l->actions[i] = action_find(p, params->action_names[i]);
+               l->action_is_for_table_entries[i] = action_is_for_table_entries;
+               l->action_is_for_default_entry[i] = action_is_for_default_entry;
+       }
+
+       l->default_action = default_action;
+
+       if (default_action->st)
+               memcpy(l->default_action_data,
+                      params->default_action_data,
+                      default_action->st->n_bits / 8);
+
+       l->n_actions = params->n_actions;
+
+       l->default_action_is_const = params->default_action_is_const;
+
+       l->action_data_size_max = action_data_size_max;
+
+       l->size = size;
+
+       l->timeout = timeout;
+
+       l->id = p->n_learners;
+
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->learners, l, node);
+       p->n_learners++;
+
+       return 0;
+
+nomem:
+       if (!l)
+               return -ENOMEM;
+
+       free(l->action_is_for_default_entry);
+       free(l->action_is_for_table_entries);
+       free(l->default_action_data);
+       free(l->actions);
+       free(l->fields);
+       free(l);
+
+       return -ENOMEM;
+}
+
+static void
+learner_params_free(struct rte_swx_table_learner_params *params)
+{
+       if (!params)
+               return;
+
+       free(params->key_mask0);
+
+       free(params);
+}
+
+static struct rte_swx_table_learner_params *
+learner_params_get(struct learner *l)
+{
+       struct rte_swx_table_learner_params *params = NULL;
+       struct field *first, *last;
+       uint32_t i;
+
+       /* Memory allocation. */
+       params = calloc(1, sizeof(struct rte_swx_table_learner_params));
+       if (!params)
+               goto error;
+
+       /* Find first (smallest offset) and last (biggest offset) match fields. */
+       first = l->fields[0];
+       last = l->fields[0];
+
+       for (i = 0; i < l->n_fields; i++) {
+               struct field *f = l->fields[i];
+
+               if (f->offset < first->offset)
+                       first = f;
+
+               if (f->offset > last->offset)
+                       last = f;
+       }
+
+       /* Key offset and size. */
+       params->key_offset = first->offset / 8;
+       params->key_size = (last->offset + last->n_bits - first->offset) / 8;
+
+       /* Memory allocation. */
+       params->key_mask0 = calloc(1, params->key_size);
+       if (!params->key_mask0)
+               goto error;
+
+       /* Key mask. */
+       for (i = 0; i < l->n_fields; i++) {
+               struct field *f = l->fields[i];
+               uint32_t start = (f->offset - first->offset) / 8;
+               size_t size = f->n_bits / 8;
+
+               memset(&params->key_mask0[start], 0xFF, size);
+       }
+
+       /* Action data size. */
+       params->action_data_size = l->action_data_size_max;
+
+       /* Maximum number of keys. */
+       params->n_keys_max = l->size;
+
+       /* Timeout. */
+       params->key_timeout = l->timeout;
+
+       return params;
+
+error:
+       learner_params_free(params);
+       return NULL;
+}
+
+static void
+learner_build_free(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               uint32_t j;
+
+               if (!t->learners)
+                       continue;
+
+               for (j = 0; j < p->n_learners; j++) {
+                       struct learner_runtime *r = &t->learners[j];
+
+                       free(r->mailbox);
+               }
+
+               free(t->learners);
+               t->learners = NULL;
+       }
+
+       if (p->learner_stats) {
+               for (i = 0; i < p->n_learners; i++)
+                       free(p->learner_stats[i].n_pkts_action);
+
+               free(p->learner_stats);
+       }
+}
+
+static int
+learner_build(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+       int status = 0;
+
+       /* Per pipeline: learner statistics. */
+       p->learner_stats = calloc(p->n_learners, sizeof(struct learner_statistics));
+       CHECK(p->learner_stats, ENOMEM);
+
+       for (i = 0; i < p->n_learners; i++) {
+               p->learner_stats[i].n_pkts_action = calloc(p->n_actions, sizeof(uint64_t));
+               CHECK(p->learner_stats[i].n_pkts_action, ENOMEM);
+       }
+
+       /* Per thread: learner run-time. */
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+               struct learner *l;
+
+               t->learners = calloc(p->n_learners, sizeof(struct learner_runtime));
+               if (!t->learners) {
+                       status = -ENOMEM;
+                       goto error;
+               }
+
+               TAILQ_FOREACH(l, &p->learners, node) {
+                       struct learner_runtime *r = &t->learners[l->id];
+                       uint64_t size;
+
+                       /* r->mailbox. */
+                       size = rte_swx_table_learner_mailbox_size_get();
+                       if (size) {
+                               r->mailbox = calloc(1, size);
+                               if (!r->mailbox) {
+                                       status = -ENOMEM;
+                                       goto error;
+                               }
+                       }
+
+                       /* r->key. */
+                       r->key = l->header ?
+                               &t->structs[l->header->struct_id] :
+                               &t->structs[p->metadata_struct_id];
+               }
+       }
+
+       return 0;
+
+error:
+       learner_build_free(p);
+       return status;
+}
+
+static void
+learner_free(struct rte_swx_pipeline *p)
+{
+       learner_build_free(p);
+
+       /* Learner tables. */
+       for ( ; ; ) {
+               struct learner *l;
+
+               l = TAILQ_FIRST(&p->learners);
+               if (!l)
+                       break;
+
+               TAILQ_REMOVE(&p->learners, l, node);
+               free(l->fields);
+               free(l->actions);
+               free(l->default_action_data);
+               free(l);
+       }
+}
+
+/*
+ * Table state.
+ */
+static int
+table_state_build(struct rte_swx_pipeline *p)
+{
+       struct table *table;
+       struct selector *s;
+       struct learner *l;
+
+       p->table_state = calloc(p->n_tables + p->n_selectors,
+                               sizeof(struct rte_swx_table_state));
+       CHECK(p->table_state, ENOMEM);
+
+       TAILQ_FOREACH(table, &p->tables, node) {
+               struct rte_swx_table_state *ts = &p->table_state[table->id];
+
+               if (table->type) {
+                       struct rte_swx_table_params *params;
+
+                       /* ts->obj. */
+                       params = table_params_get(table);
+                       CHECK(params, ENOMEM);
+
+                       ts->obj = table->type->ops.create(params,
+                               NULL,
+                               table->args,
+                               p->numa_node);
+
+                       table_params_free(params);
+                       CHECK(ts->obj, ENODEV);
+               }
+
+               /* ts->default_action_data. */
+               if (table->action_data_size_max) {
+                       ts->default_action_data =
+                               malloc(table->action_data_size_max);
+                       CHECK(ts->default_action_data, ENOMEM);
+
+                       memcpy(ts->default_action_data,
+                              table->default_action_data,
+                              table->action_data_size_max);
+               }
+
+               /* ts->default_action_id. */
+               ts->default_action_id = table->default_action->id;
+       }
+
+       TAILQ_FOREACH(s, &p->selectors, node) {
+               struct rte_swx_table_state *ts = &p->table_state[p->n_tables + s->id];
+               struct rte_swx_table_selector_params *params;
+
+               /* ts->obj. */
+               params = selector_table_params_get(s);
+               CHECK(params, ENOMEM);
+
+               ts->obj = rte_swx_table_selector_create(params, NULL, p->numa_node);
+
+               selector_params_free(params);
+               CHECK(ts->obj, ENODEV);
+       }
+
+       TAILQ_FOREACH(l, &p->learners, node) {
+               struct rte_swx_table_state *ts = &p->table_state[p->n_tables +
+                       p->n_selectors + l->id];
+               struct rte_swx_table_learner_params *params;
+
+               /* ts->obj. */
+               params = learner_params_get(l);
+               CHECK(params, ENOMEM);
+
+               ts->obj = rte_swx_table_learner_create(params, p->numa_node);
+               learner_params_free(params);
+               CHECK(ts->obj, ENODEV);
+
+               /* ts->default_action_data. */
+               if (l->action_data_size_max) {
+                       ts->default_action_data = malloc(l->action_data_size_max);
+                       CHECK(ts->default_action_data, ENOMEM);
+
+                       memcpy(ts->default_action_data,
+                              l->default_action_data,
+                              l->action_data_size_max);
+               }
+
+               /* ts->default_action_id. */
+               ts->default_action_id = l->default_action->id;
+       }
+
+       return 0;
+}
+
+static void
+table_state_build_free(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+
+       if (!p->table_state)
+               return;
+
+       for (i = 0; i < p->n_tables; i++) {
+               struct rte_swx_table_state *ts = &p->table_state[i];
+               struct table *table = table_find_by_id(p, i);
+
+               /* ts->obj. */
+               if (table->type && ts->obj)
+                       table->type->ops.free(ts->obj);
+
+               /* ts->default_action_data. */
+               free(ts->default_action_data);
+       }
+
+       for (i = 0; i < p->n_selectors; i++) {
+               struct rte_swx_table_state *ts = &p->table_state[p->n_tables + i];
+
+               /* ts->obj. */
+               if (ts->obj)
+                       rte_swx_table_selector_free(ts->obj);
+       }
+
+       for (i = 0; i < p->n_learners; i++) {
+               struct rte_swx_table_state *ts = &p->table_state[p->n_tables + p->n_selectors + i];
+
+               /* ts->obj. */
+               if (ts->obj)
+                       rte_swx_table_learner_free(ts->obj);
+
+               /* ts->default_action_data. */
+               free(ts->default_action_data);
+       }
+
+       free(p->table_state);
+       p->table_state = NULL;
+}
+
+static void
+table_state_free(struct rte_swx_pipeline *p)
+{
+       table_state_build_free(p);
+}
+
+/*
+ * Register array.
+ */
+static struct regarray *
+regarray_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct regarray *elem;
+
+       TAILQ_FOREACH(elem, &p->regarrays, node)
+               if (!strcmp(elem->name, name))
+                       return elem;
+
+       return NULL;
+}
+
+static struct regarray *
+regarray_find_by_id(struct rte_swx_pipeline *p, uint32_t id)
+{
+       struct regarray *elem = NULL;
+
+       TAILQ_FOREACH(elem, &p->regarrays, node)
+               if (elem->id == id)
+                       return elem;
+
+       return NULL;
+}
+
+int
+rte_swx_pipeline_regarray_config(struct rte_swx_pipeline *p,
+                             const char *name,
+                             uint32_t size,
+                             uint64_t init_val)
+{
+       struct regarray *r;
+
+       CHECK(p, EINVAL);
+
+       CHECK_NAME(name, EINVAL);
+       CHECK(!regarray_find(p, name), EEXIST);
+
+       CHECK(size, EINVAL);
+       size = rte_align32pow2(size);
+
+       /* Memory allocation. */
+       r = calloc(1, sizeof(struct regarray));
+       CHECK(r, ENOMEM);
+
+       /* Node initialization. */
+       strcpy(r->name, name);
+       r->init_val = init_val;
+       r->size = size;
+       r->id = p->n_regarrays;
+
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->regarrays, r, node);
+       p->n_regarrays++;
+
+       return 0;
+}
+
+static int
+regarray_build(struct rte_swx_pipeline *p)
+{
+       struct regarray *regarray;
+
+       if (!p->n_regarrays)
+               return 0;
+
+       p->regarray_runtime = calloc(p->n_regarrays, sizeof(struct regarray_runtime));
+       CHECK(p->regarray_runtime, ENOMEM);
+
+       TAILQ_FOREACH(regarray, &p->regarrays, node) {
+               struct regarray_runtime *r = &p->regarray_runtime[regarray->id];
+               uint32_t i;
+
+               r->regarray = env_malloc(regarray->size * sizeof(uint64_t),
+                                        RTE_CACHE_LINE_SIZE,
+                                        p->numa_node);
+               CHECK(r->regarray, ENOMEM);
+
+               if (regarray->init_val)
+                       for (i = 0; i < regarray->size; i++)
+                               r->regarray[i] = regarray->init_val;
+
+               r->size_mask = regarray->size - 1;
+       }
+
+       return 0;
+}
+
+static void
+regarray_build_free(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+
+       if (!p->regarray_runtime)
+               return;
+
+       for (i = 0; i < p->n_regarrays; i++) {
+               struct regarray *regarray = regarray_find_by_id(p, i);
+               struct regarray_runtime *r = &p->regarray_runtime[i];
+
+               env_free(r->regarray, regarray->size * sizeof(uint64_t));
+       }
+
+       free(p->regarray_runtime);
+       p->regarray_runtime = NULL;
+}
+
+static void
+regarray_free(struct rte_swx_pipeline *p)
+{
+       regarray_build_free(p);
+
+       for ( ; ; ) {
+               struct regarray *elem;
+
+               elem = TAILQ_FIRST(&p->regarrays);
+               if (!elem)
+                       break;
+
+               TAILQ_REMOVE(&p->regarrays, elem, node);
+               free(elem);
+       }
+}
+
+/*
+ * Meter array.
+ */
+static struct meter_profile *
+meter_profile_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct meter_profile *elem;
+
+       TAILQ_FOREACH(elem, &p->meter_profiles, node)
+               if (!strcmp(elem->name, name))
+                       return elem;
+
+       return NULL;
+}
+
+static struct metarray *
+metarray_find(struct rte_swx_pipeline *p, const char *name)
+{
+       struct metarray *elem;
+
+       TAILQ_FOREACH(elem, &p->metarrays, node)
+               if (!strcmp(elem->name, name))
+                       return elem;
+
+       return NULL;
+}
+
+static struct metarray *
+metarray_find_by_id(struct rte_swx_pipeline *p, uint32_t id)
+{
+       struct metarray *elem = NULL;
+
+       TAILQ_FOREACH(elem, &p->metarrays, node)
+               if (elem->id == id)
+                       return elem;
+
+       return NULL;
+}
+
+int
+rte_swx_pipeline_metarray_config(struct rte_swx_pipeline *p,
+                                const char *name,
+                                uint32_t size)
+{
+       struct metarray *m;
+
+       CHECK(p, EINVAL);
+
+       CHECK_NAME(name, EINVAL);
+       CHECK(!metarray_find(p, name), EEXIST);
+
+       CHECK(size, EINVAL);
+       size = rte_align32pow2(size);
+
+       /* Memory allocation. */
+       m = calloc(1, sizeof(struct metarray));
+       CHECK(m, ENOMEM);
+
+       /* Node initialization. */
+       strcpy(m->name, name);
+       m->size = size;
+       m->id = p->n_metarrays;
+
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->metarrays, m, node);
+       p->n_metarrays++;
+
+       return 0;
+}
+
+struct meter_profile meter_profile_default = {
+       .node = {0},
+       .name = "",
+       .params = {0},
+
+       .profile = {
+               .cbs = 10000,
+               .pbs = 10000,
+               .cir_period = 1,
+               .cir_bytes_per_period = 1,
+               .pir_period = 1,
+               .pir_bytes_per_period = 1,
+       },
+
+       .n_users = 0,
+};
+
+static void
+meter_init(struct meter *m)
+{
+       memset(m, 0, sizeof(struct meter));
+       rte_meter_trtcm_config(&m->m, &meter_profile_default.profile);
+       m->profile = &meter_profile_default;
+       m->color_mask = RTE_COLOR_GREEN;
+
+       meter_profile_default.n_users++;
+}
+
+static int
+metarray_build(struct rte_swx_pipeline *p)
+{
+       struct metarray *m;
+
+       if (!p->n_metarrays)
+               return 0;
+
+       p->metarray_runtime = calloc(p->n_metarrays, sizeof(struct metarray_runtime));
+       CHECK(p->metarray_runtime, ENOMEM);
+
+       TAILQ_FOREACH(m, &p->metarrays, node) {
+               struct metarray_runtime *r = &p->metarray_runtime[m->id];
+               uint32_t i;
+
+               r->metarray = env_malloc(m->size * sizeof(struct meter),
+                                        RTE_CACHE_LINE_SIZE,
+                                        p->numa_node);
+               CHECK(r->metarray, ENOMEM);
+
+               for (i = 0; i < m->size; i++)
+                       meter_init(&r->metarray[i]);
+
+               r->size_mask = m->size - 1;
+       }
+
+       return 0;
+}
+
+static void
+metarray_build_free(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+
+       if (!p->metarray_runtime)
+               return;
+
+       for (i = 0; i < p->n_metarrays; i++) {
+               struct metarray *m = metarray_find_by_id(p, i);
+               struct metarray_runtime *r = &p->metarray_runtime[i];
+
+               env_free(r->metarray, m->size * sizeof(struct meter));
+       }
+
+       free(p->metarray_runtime);
+       p->metarray_runtime = NULL;
+}
+
+static void
+metarray_free(struct rte_swx_pipeline *p)
+{
+       metarray_build_free(p);
+
+       /* Meter arrays. */
+       for ( ; ; ) {
+               struct metarray *elem;
+
+               elem = TAILQ_FIRST(&p->metarrays);
+               if (!elem)
+                       break;
+
+               TAILQ_REMOVE(&p->metarrays, elem, node);
+               free(elem);
+       }
+
+       /* Meter profiles. */
+       for ( ; ; ) {
+               struct meter_profile *elem;
+
+               elem = TAILQ_FIRST(&p->meter_profiles);
+               if (!elem)
+                       break;
+
+               TAILQ_REMOVE(&p->meter_profiles, elem, node);
+               free(elem);
+       }
+}
+
+/*
+ * Pipeline.
+ */
+int
+rte_swx_pipeline_config(struct rte_swx_pipeline **p, int numa_node)
+{
+       struct rte_swx_pipeline *pipeline;
+
+       /* Check input parameters. */
+       CHECK(p, EINVAL);
+
+       /* Memory allocation. */
+       pipeline = calloc(1, sizeof(struct rte_swx_pipeline));
+       CHECK(pipeline, ENOMEM);
+
+       /* Initialization. */
+       TAILQ_INIT(&pipeline->struct_types);
+       TAILQ_INIT(&pipeline->port_in_types);
+       TAILQ_INIT(&pipeline->ports_in);
+       TAILQ_INIT(&pipeline->port_out_types);
+       TAILQ_INIT(&pipeline->ports_out);
+       TAILQ_INIT(&pipeline->extern_types);
+       TAILQ_INIT(&pipeline->extern_objs);
+       TAILQ_INIT(&pipeline->extern_funcs);
+       TAILQ_INIT(&pipeline->headers);
+       TAILQ_INIT(&pipeline->actions);
+       TAILQ_INIT(&pipeline->table_types);
+       TAILQ_INIT(&pipeline->tables);
+       TAILQ_INIT(&pipeline->selectors);
+       TAILQ_INIT(&pipeline->learners);
+       TAILQ_INIT(&pipeline->regarrays);
+       TAILQ_INIT(&pipeline->meter_profiles);
+       TAILQ_INIT(&pipeline->metarrays);
+
+       pipeline->n_structs = 1; /* Struct 0 is reserved for action_data. */
+       pipeline->numa_node = numa_node;
+
+       *p = pipeline;
+       return 0;
+}
+
+void
+rte_swx_pipeline_free(struct rte_swx_pipeline *p)
+{
+       void *lib;
+
+       if (!p)
+               return;
+
+       lib = p->lib;
+
+       free(p->instruction_data);
+       free(p->instructions);
+
+       metarray_free(p);
+       regarray_free(p);
+       table_state_free(p);
+       learner_free(p);
+       selector_free(p);
+       table_free(p);
+       action_free(p);
+       instruction_table_free(p);
+       metadata_free(p);
+       header_free(p);
+       extern_func_free(p);
+       extern_obj_free(p);
+       port_out_free(p);
+       port_in_free(p);
+       struct_free(p);
+
+       free(p);
+
+       if (lib)
+               dlclose(lib);
+}
+
+int
+rte_swx_pipeline_instructions_config(struct rte_swx_pipeline *p,
+                                    const char **instructions,
+                                    uint32_t n_instructions)
+{
+       int err;
+       uint32_t i;
+
+       err = instruction_config(p, NULL, instructions, n_instructions);
+       if (err)
+               return err;
+
+       /* Thread instruction pointer reset. */
+       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
+               struct thread *t = &p->threads[i];
+
+               thread_ip_reset(p, t);
+       }
+
+       return 0;
+}
+
+static int
+pipeline_compile(struct rte_swx_pipeline *p);
+
+int
+rte_swx_pipeline_build(struct rte_swx_pipeline *p)
+{
+       int status;
+
+       CHECK(p, EINVAL);
+       CHECK(p->build_done == 0, EEXIST);
+
+       status = port_in_build(p);
+       if (status)
+               goto error;
+
+       status = port_out_build(p);
+       if (status)
+               goto error;
+
+       status = struct_build(p);
+       if (status)
+               goto error;
+
+       status = extern_obj_build(p);
+       if (status)
+               goto error;
+
+       status = extern_func_build(p);
+       if (status)
+               goto error;
+
+       status = header_build(p);
+       if (status)
+               goto error;
+
+       status = metadata_build(p);
+       if (status)
+               goto error;
+
+       status = instruction_table_build(p);
+       if (status)
+               goto error;
+
+       status = action_build(p);
+       if (status)
+               goto error;
+
+       status = table_build(p);
+       if (status)
+               goto error;
+
+       status = selector_build(p);
+       if (status)
+               goto error;
+
+       status = learner_build(p);
+       if (status)
+               goto error;
+
+       status = table_state_build(p);
+       if (status)
+               goto error;
+
+       status = regarray_build(p);
+       if (status)
+               goto error;
+
+       status = metarray_build(p);
+       if (status)
+               goto error;
+
+       p->build_done = 1;
+
+       pipeline_compile(p);
+
+       return 0;
+
+error:
+       metarray_build_free(p);
+       regarray_build_free(p);
+       table_state_build_free(p);
+       learner_build_free(p);
+       selector_build_free(p);
+       table_build_free(p);
+       action_build_free(p);
+       instruction_table_build_free(p);
+       metadata_build_free(p);
+       header_build_free(p);
+       extern_func_build_free(p);
+       extern_obj_build_free(p);
+       port_out_build_free(p);
+       port_in_build_free(p);
+       struct_build_free(p);
+
+       return status;
+}
+
+void
+rte_swx_pipeline_run(struct rte_swx_pipeline *p, uint32_t n_instructions)
+{
+       uint32_t i;
+
+       for (i = 0; i < n_instructions; i++)
+               instr_exec(p);
+}
+
+void
+rte_swx_pipeline_flush(struct rte_swx_pipeline *p)
+{
+       uint32_t i;
+
+       for (i = 0; i < p->n_ports_out; i++) {
+               struct port_out_runtime *port = &p->out[i];
+
+               if (port->flush)
+                       port->flush(port->obj);
+       }
+}
+
+/*
+ * Control.
+ */
+int
+rte_swx_ctl_pipeline_info_get(struct rte_swx_pipeline *p,
+                             struct rte_swx_ctl_pipeline_info *pipeline)
+{
+       struct action *action;
+       struct table *table;
+       uint32_t n_actions = 0, n_tables = 0;
+
+       if (!p || !pipeline)
+               return -EINVAL;
+
+       TAILQ_FOREACH(action, &p->actions, node)
+               n_actions++;
+
+       TAILQ_FOREACH(table, &p->tables, node)
+               n_tables++;
+
+       pipeline->n_ports_in = p->n_ports_in;
+       pipeline->n_ports_out = p->n_ports_out;
+       pipeline->n_actions = n_actions;
+       pipeline->n_tables = n_tables;
+       pipeline->n_selectors = p->n_selectors;
+       pipeline->n_learners = p->n_learners;
+       pipeline->n_regarrays = p->n_regarrays;
+       pipeline->n_metarrays = p->n_metarrays;
+
+       return 0;
+}
+
+int
+rte_swx_ctl_pipeline_numa_node_get(struct rte_swx_pipeline *p, int *numa_node)
+{
+       if (!p || !numa_node)
+               return -EINVAL;
+
+       *numa_node = p->numa_node;
+       return 0;
+}
+
+int
+rte_swx_ctl_action_info_get(struct rte_swx_pipeline *p,
+                           uint32_t action_id,
+                           struct rte_swx_ctl_action_info *action)
+{
+       struct action *a = NULL;
+
+       if (!p || (action_id >= p->n_actions) || !action)
+               return -EINVAL;
+
+       a = action_find_by_id(p, action_id);
+       if (!a)
+               return -EINVAL;
+
+       strcpy(action->name, a->name);
+       action->n_args = a->st ? a->st->n_fields : 0;
+       return 0;
+}
+
+int
+rte_swx_ctl_action_arg_info_get(struct rte_swx_pipeline *p,
+                               uint32_t action_id,
+                               uint32_t action_arg_id,
+                               struct rte_swx_ctl_action_arg_info *action_arg)
+{
+       struct action *a = NULL;
+       struct field *arg = NULL;
+
+       if (!p || (action_id >= p->n_actions) || !action_arg)
+               return -EINVAL;
+
+       a = action_find_by_id(p, action_id);
+       if (!a || !a->st || (action_arg_id >= a->st->n_fields))
+               return -EINVAL;
+
+       arg = &a->st->fields[action_arg_id];
+       strcpy(action_arg->name, arg->name);
+       action_arg->n_bits = arg->n_bits;
+       action_arg->is_network_byte_order = a->args_endianness[action_arg_id];
+
+       return 0;
+}
+
+int
+rte_swx_ctl_table_info_get(struct rte_swx_pipeline *p,
+                          uint32_t table_id,
+                          struct rte_swx_ctl_table_info *table)
+{
+       struct table *t = NULL;
+
+       if (!p || !table)
+               return -EINVAL;
+
+       t = table_find_by_id(p, table_id);
+       if (!t)
+               return -EINVAL;
+
+       strcpy(table->name, t->name);
+       strcpy(table->args, t->args);
+       table->n_match_fields = t->n_fields;
+       table->n_actions = t->n_actions;
+       table->default_action_is_const = t->default_action_is_const;
+       table->size = t->size;
+       return 0;
+}
+
+int
+rte_swx_ctl_table_match_field_info_get(struct rte_swx_pipeline *p,
+       uint32_t table_id,
+       uint32_t match_field_id,
+       struct rte_swx_ctl_table_match_field_info *match_field)
+{
+       struct table *t;
+       struct match_field *f;
+
+       if (!p || (table_id >= p->n_tables) || !match_field)
+               return -EINVAL;
+
+       t = table_find_by_id(p, table_id);
+       if (!t || (match_field_id >= t->n_fields))
+               return -EINVAL;
+
+       f = &t->fields[match_field_id];
+       match_field->match_type = f->match_type;
+       match_field->is_header = t->header ? 1 : 0;
+       match_field->n_bits = f->field->n_bits;
+       match_field->offset = f->field->offset;
+
+       return 0;
+}
+
+int
+rte_swx_ctl_table_action_info_get(struct rte_swx_pipeline *p,
+       uint32_t table_id,
+       uint32_t table_action_id,
+       struct rte_swx_ctl_table_action_info *table_action)
+{
+       struct table *t;
+
+       if (!p || (table_id >= p->n_tables) || !table_action)
+               return -EINVAL;
+
+       t = table_find_by_id(p, table_id);
+       if (!t || (table_action_id >= t->n_actions))
+               return -EINVAL;
+
+       table_action->action_id = t->actions[table_action_id]->id;
+
+       table_action->action_is_for_table_entries = t->action_is_for_table_entries[table_action_id];
+       table_action->action_is_for_default_entry = t->action_is_for_default_entry[table_action_id];
+
+       return 0;
+}
+
+int
+rte_swx_ctl_table_ops_get(struct rte_swx_pipeline *p,
+                         uint32_t table_id,
+                         struct rte_swx_table_ops *table_ops,
+                         int *is_stub)
+{
+       struct table *t;
+
+       if (!p || (table_id >= p->n_tables))
+               return -EINVAL;
+
+       t = table_find_by_id(p, table_id);
+       if (!t)
+               return -EINVAL;
+
+       if (t->type) {
+               if (table_ops)
+                       memcpy(table_ops, &t->type->ops, sizeof(*table_ops));
+               *is_stub = 0;
+       } else {
+               *is_stub = 1;
+       }
+
+       return 0;
+}
+
+int
+rte_swx_ctl_selector_info_get(struct rte_swx_pipeline *p,
+                             uint32_t selector_id,
+                             struct rte_swx_ctl_selector_info *selector)
+{
+       struct selector *s = NULL;
+
+       if (!p || !selector)
+               return -EINVAL;
+
+       s = selector_find_by_id(p, selector_id);
+       if (!s)
+               return -EINVAL;
+
+       strcpy(selector->name, s->name);
+
+       selector->n_selector_fields = s->n_selector_fields;
+       selector->n_groups_max = s->n_groups_max;
+       selector->n_members_per_group_max = s->n_members_per_group_max;
+
+       return 0;
+}
+
+int
+rte_swx_ctl_selector_group_id_field_info_get(struct rte_swx_pipeline *p,
+        uint32_t selector_id,
+        struct rte_swx_ctl_table_match_field_info *field)
 {
-       uint32_t i;
-
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
-               uint32_t j;
-
-               if (!t->tables)
-                       continue;
-
-               for (j = 0; j < p->n_tables; j++) {
-                       struct table_runtime *r = &t->tables[j];
+       struct selector *s;
 
-                       free(r->mailbox);
-               }
+       if (!p || (selector_id >= p->n_selectors) || !field)
+               return -EINVAL;
 
-               free(t->tables);
-               t->tables = NULL;
-       }
+       s = selector_find_by_id(p, selector_id);
+       if (!s)
+               return -EINVAL;
 
-       if (p->table_stats) {
-               for (i = 0; i < p->n_tables; i++)
-                       free(p->table_stats[i].n_pkts_action);
+       field->match_type = RTE_SWX_TABLE_MATCH_EXACT;
+       field->is_header = 0;
+       field->n_bits = s->group_id_field->n_bits;
+       field->offset = s->group_id_field->offset;
 
-               free(p->table_stats);
-       }
+       return 0;
 }
 
-static void
-table_free(struct rte_swx_pipeline *p)
+int
+rte_swx_ctl_selector_field_info_get(struct rte_swx_pipeline *p,
+        uint32_t selector_id,
+        uint32_t selector_field_id,
+        struct rte_swx_ctl_table_match_field_info *field)
 {
-       table_build_free(p);
-
-       /* Tables. */
-       for ( ; ; ) {
-               struct table *elem;
-
-               elem = TAILQ_FIRST(&p->tables);
-               if (!elem)
-                       break;
+       struct selector *s;
+       struct field *f;
 
-               TAILQ_REMOVE(&p->tables, elem, node);
-               free(elem->fields);
-               free(elem->actions);
-               free(elem->default_action_data);
-               free(elem);
-       }
+       if (!p || (selector_id >= p->n_selectors) || !field)
+               return -EINVAL;
 
-       /* Table types. */
-       for ( ; ; ) {
-               struct table_type *elem;
+       s = selector_find_by_id(p, selector_id);
+       if (!s || (selector_field_id >= s->n_selector_fields))
+               return -EINVAL;
 
-               elem = TAILQ_FIRST(&p->table_types);
-               if (!elem)
-                       break;
+       f = s->selector_fields[selector_field_id];
+       field->match_type = RTE_SWX_TABLE_MATCH_EXACT;
+       field->is_header = s->selector_header ? 1 : 0;
+       field->n_bits = f->n_bits;
+       field->offset = f->offset;
 
-               TAILQ_REMOVE(&p->table_types, elem, node);
-               free(elem);
-       }
+       return 0;
 }
 
-/*
- * Selector.
- */
-static struct selector *
-selector_find(struct rte_swx_pipeline *p, const char *name)
+int
+rte_swx_ctl_selector_member_id_field_info_get(struct rte_swx_pipeline *p,
+        uint32_t selector_id,
+        struct rte_swx_ctl_table_match_field_info *field)
 {
        struct selector *s;
 
-       TAILQ_FOREACH(s, &p->selectors, node)
-               if (strcmp(s->name, name) == 0)
-                       return s;
-
-       return NULL;
-}
+       if (!p || (selector_id >= p->n_selectors) || !field)
+               return -EINVAL;
 
-static struct selector *
-selector_find_by_id(struct rte_swx_pipeline *p, uint32_t id)
-{
-       struct selector *s = NULL;
+       s = selector_find_by_id(p, selector_id);
+       if (!s)
+               return -EINVAL;
 
-       TAILQ_FOREACH(s, &p->selectors, node)
-               if (s->id == id)
-                       return s;
+       field->match_type = RTE_SWX_TABLE_MATCH_EXACT;
+       field->is_header = 0;
+       field->n_bits = s->member_id_field->n_bits;
+       field->offset = s->member_id_field->offset;
 
-       return NULL;
+       return 0;
 }
 
-static int
-selector_fields_check(struct rte_swx_pipeline *p,
-                     struct rte_swx_pipeline_selector_params *params,
-                     struct header **header)
+int
+rte_swx_ctl_learner_info_get(struct rte_swx_pipeline *p,
+                            uint32_t learner_id,
+                            struct rte_swx_ctl_learner_info *learner)
 {
-       struct header *h0 = NULL;
-       struct field *hf, *mf;
-       uint32_t i;
+       struct learner *l = NULL;
 
-       /* Return if no selector fields. */
-       if (!params->n_selector_fields || !params->selector_field_names)
+       if (!p || !learner)
                return -EINVAL;
 
-       /* Check that all the selector fields either belong to the same header
-        * or are all meta-data fields.
-        */
-       hf = header_field_parse(p, params->selector_field_names[0], &h0);
-       mf = metadata_field_parse(p, params->selector_field_names[0]);
-       if (!hf && !mf)
+       l = learner_find_by_id(p, learner_id);
+       if (!l)
                return -EINVAL;
 
-       for (i = 1; i < params->n_selector_fields; i++)
-               if (h0) {
-                       struct header *h;
+       strcpy(learner->name, l->name);
 
-                       hf = header_field_parse(p, params->selector_field_names[i], &h);
-                       if (!hf || (h->id != h0->id))
-                               return -EINVAL;
-               } else {
-                       mf = metadata_field_parse(p, params->selector_field_names[i]);
-                       if (!mf)
-                               return -EINVAL;
-               }
+       learner->n_match_fields = l->n_fields;
+       learner->n_actions = l->n_actions;
+       learner->default_action_is_const = l->default_action_is_const;
+       learner->size = l->size;
 
-       /* Check that there are no duplicated match fields. */
-       for (i = 0; i < params->n_selector_fields; i++) {
-               const char *field_name = params->selector_field_names[i];
-               uint32_t j;
+       return 0;
+}
 
-               for (j = i + 1; j < params->n_selector_fields; j++)
-                       if (!strcmp(params->selector_field_names[j], field_name))
-                               return -EINVAL;
-       }
+int
+rte_swx_ctl_learner_match_field_info_get(struct rte_swx_pipeline *p,
+                                        uint32_t learner_id,
+                                        uint32_t match_field_id,
+                                        struct rte_swx_ctl_table_match_field_info *match_field)
+{
+       struct learner *l;
+       struct field *f;
 
-       /* Return. */
-       if (header)
-               *header = h0;
+       if (!p || (learner_id >= p->n_learners) || !match_field)
+               return -EINVAL;
+
+       l = learner_find_by_id(p, learner_id);
+       if (!l || (match_field_id >= l->n_fields))
+               return -EINVAL;
+
+       f = l->fields[match_field_id];
+       match_field->match_type = RTE_SWX_TABLE_MATCH_EXACT;
+       match_field->is_header = l->header ? 1 : 0;
+       match_field->n_bits = f->n_bits;
+       match_field->offset = f->offset;
 
        return 0;
 }
 
 int
-rte_swx_pipeline_selector_config(struct rte_swx_pipeline *p,
-                                const char *name,
-                                struct rte_swx_pipeline_selector_params *params)
+rte_swx_ctl_learner_action_info_get(struct rte_swx_pipeline *p,
+                                   uint32_t learner_id,
+                                   uint32_t learner_action_id,
+                                   struct rte_swx_ctl_table_action_info *learner_action)
 {
-       struct selector *s;
-       struct header *selector_header = NULL;
-       struct field *group_id_field, *member_id_field;
-       uint32_t i;
-       int status = 0;
-
-       CHECK(p, EINVAL);
-
-       CHECK_NAME(name, EINVAL);
-       CHECK(!table_find(p, name), EEXIST);
-       CHECK(!selector_find(p, name), EEXIST);
+       struct learner *l;
 
-       CHECK(params, EINVAL);
+       if (!p || (learner_id >= p->n_learners) || !learner_action)
+               return -EINVAL;
 
-       CHECK_NAME(params->group_id_field_name, EINVAL);
-       group_id_field = metadata_field_parse(p, params->group_id_field_name);
-       CHECK(group_id_field, EINVAL);
+       l = learner_find_by_id(p, learner_id);
+       if (!l || (learner_action_id >= l->n_actions))
+               return -EINVAL;
 
-       for (i = 0; i < params->n_selector_fields; i++) {
-               const char *field_name = params->selector_field_names[i];
+       learner_action->action_id = l->actions[learner_action_id]->id;
 
-               CHECK_NAME(field_name, EINVAL);
-       }
-       status = selector_fields_check(p, params, &selector_header);
-       if (status)
-               return status;
+       learner_action->action_is_for_table_entries =
+               l->action_is_for_table_entries[learner_action_id];
 
-       CHECK_NAME(params->member_id_field_name, EINVAL);
-       member_id_field = metadata_field_parse(p, params->member_id_field_name);
-       CHECK(member_id_field, EINVAL);
+       learner_action->action_is_for_default_entry =
+               l->action_is_for_default_entry[learner_action_id];
 
-       CHECK(params->n_groups_max, EINVAL);
+       return 0;
+}
 
-       CHECK(params->n_members_per_group_max, EINVAL);
+int
+rte_swx_pipeline_table_state_get(struct rte_swx_pipeline *p,
+                                struct rte_swx_table_state **table_state)
+{
+       if (!p || !table_state || !p->build_done)
+               return -EINVAL;
 
-       /* Memory allocation. */
-       s = calloc(1, sizeof(struct selector));
-       if (!s) {
-               status = -ENOMEM;
-               goto error;
-       }
+       *table_state = p->table_state;
+       return 0;
+}
 
-       s->selector_fields = calloc(params->n_selector_fields, sizeof(struct field *));
-       if (!s->selector_fields) {
-               status = -ENOMEM;
-               goto error;
-       }
+int
+rte_swx_pipeline_table_state_set(struct rte_swx_pipeline *p,
+                                struct rte_swx_table_state *table_state)
+{
+       if (!p || !table_state || !p->build_done)
+               return -EINVAL;
 
-       /* Node initialization. */
-       strcpy(s->name, name);
+       p->table_state = table_state;
+       return 0;
+}
 
-       s->group_id_field = group_id_field;
+int
+rte_swx_ctl_pipeline_port_in_stats_read(struct rte_swx_pipeline *p,
+                                       uint32_t port_id,
+                                       struct rte_swx_port_in_stats *stats)
+{
+       struct port_in *port;
 
-       for (i = 0; i < params->n_selector_fields; i++) {
-               const char *field_name = params->selector_field_names[i];
+       if (!p || !stats)
+               return -EINVAL;
 
-               s->selector_fields[i] = selector_header ?
-                       header_field_parse(p, field_name, NULL) :
-                       metadata_field_parse(p, field_name);
-       }
+       port = port_in_find(p, port_id);
+       if (!port)
+               return -EINVAL;
 
-       s->n_selector_fields = params->n_selector_fields;
+       port->type->ops.stats_read(port->obj, stats);
+       return 0;
+}
 
-       s->selector_header = selector_header;
+int
+rte_swx_ctl_pipeline_port_out_stats_read(struct rte_swx_pipeline *p,
+                                        uint32_t port_id,
+                                        struct rte_swx_port_out_stats *stats)
+{
+       struct port_out *port;
 
-       s->member_id_field = member_id_field;
+       if (!p || !stats)
+               return -EINVAL;
 
-       s->n_groups_max = params->n_groups_max;
+       port = port_out_find(p, port_id);
+       if (!port)
+               return -EINVAL;
 
-       s->n_members_per_group_max = params->n_members_per_group_max;
+       port->type->ops.stats_read(port->obj, stats);
+       return 0;
+}
 
-       s->id = p->n_selectors;
+int
+rte_swx_ctl_pipeline_table_stats_read(struct rte_swx_pipeline *p,
+                                     const char *table_name,
+                                     struct rte_swx_table_stats *stats)
+{
+       struct table *table;
+       struct table_statistics *table_stats;
 
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->selectors, s, node);
-       p->n_selectors++;
+       if (!p || !table_name || !table_name[0] || !stats || !stats->n_pkts_action)
+               return -EINVAL;
 
-       return 0;
+       table = table_find(p, table_name);
+       if (!table)
+               return -EINVAL;
 
-error:
-       if (!s)
-               return status;
+       table_stats = &p->table_stats[table->id];
 
-       free(s->selector_fields);
+       memcpy(stats->n_pkts_action,
+              table_stats->n_pkts_action,
+              p->n_actions * sizeof(uint64_t));
 
-       free(s);
+       stats->n_pkts_hit = table_stats->n_pkts_hit[1];
+       stats->n_pkts_miss = table_stats->n_pkts_hit[0];
 
-       return status;
+       return 0;
 }
 
-static void
-selector_params_free(struct rte_swx_table_selector_params *params)
+int
+rte_swx_ctl_pipeline_selector_stats_read(struct rte_swx_pipeline *p,
+       const char *selector_name,
+       struct rte_swx_pipeline_selector_stats *stats)
 {
-       if (!params)
-               return;
-
-       free(params->selector_mask);
+       struct selector *s;
 
-       free(params);
-}
+       if (!p || !selector_name || !selector_name[0] || !stats)
+               return -EINVAL;
 
-static struct rte_swx_table_selector_params *
-selector_table_params_get(struct selector *s)
-{
-       struct rte_swx_table_selector_params *params = NULL;
-       struct field *first, *last;
-       uint32_t i;
+       s = selector_find(p, selector_name);
+       if (!s)
+               return -EINVAL;
 
-       /* Memory allocation. */
-       params = calloc(1, sizeof(struct rte_swx_table_selector_params));
-       if (!params)
-               goto error;
+       stats->n_pkts = p->selector_stats[s->id].n_pkts;
 
-       /* Group ID. */
-       params->group_id_offset = s->group_id_field->offset / 8;
+       return 0;
+}
 
-       /* Find first (smallest offset) and last (biggest offset) selector fields. */
-       first = s->selector_fields[0];
-       last = s->selector_fields[0];
+int
+rte_swx_ctl_pipeline_learner_stats_read(struct rte_swx_pipeline *p,
+                                       const char *learner_name,
+                                       struct rte_swx_learner_stats *stats)
+{
+       struct learner *l;
+       struct learner_statistics *learner_stats;
 
-       for (i = 0; i < s->n_selector_fields; i++) {
-               struct field *f = s->selector_fields[i];
+       if (!p || !learner_name || !learner_name[0] || !stats || !stats->n_pkts_action)
+               return -EINVAL;
 
-               if (f->offset < first->offset)
-                       first = f;
+       l = learner_find(p, learner_name);
+       if (!l)
+               return -EINVAL;
 
-               if (f->offset > last->offset)
-                       last = f;
-       }
+       learner_stats = &p->learner_stats[l->id];
 
-       /* Selector offset and size. */
-       params->selector_offset = first->offset / 8;
-       params->selector_size = (last->offset + last->n_bits - first->offset) / 8;
+       memcpy(stats->n_pkts_action,
+              learner_stats->n_pkts_action,
+              p->n_actions * sizeof(uint64_t));
 
-       /* Memory allocation. */
-       params->selector_mask = calloc(1, params->selector_size);
-       if (!params->selector_mask)
-               goto error;
+       stats->n_pkts_hit = learner_stats->n_pkts_hit[1];
+       stats->n_pkts_miss = learner_stats->n_pkts_hit[0];
 
-       /* Selector mask. */
-       for (i = 0; i < s->n_selector_fields; i++) {
-               struct field *f = s->selector_fields[i];
-               uint32_t start = (f->offset - first->offset) / 8;
-               size_t size = f->n_bits / 8;
+       stats->n_pkts_learn_ok = learner_stats->n_pkts_learn[0];
+       stats->n_pkts_learn_err = learner_stats->n_pkts_learn[1];
 
-               memset(&params->selector_mask[start], 0xFF, size);
-       }
+       stats->n_pkts_forget = learner_stats->n_pkts_forget;
 
-       /* Member ID. */
-       params->member_id_offset = s->member_id_field->offset / 8;
+       return 0;
+}
 
-       /* Maximum number of groups. */
-       params->n_groups_max = s->n_groups_max;
+int
+rte_swx_ctl_regarray_info_get(struct rte_swx_pipeline *p,
+                             uint32_t regarray_id,
+                             struct rte_swx_ctl_regarray_info *regarray)
+{
+       struct regarray *r;
 
-       /* Maximum number of members per group. */
-       params->n_members_per_group_max = s->n_members_per_group_max;
+       if (!p || !regarray)
+               return -EINVAL;
 
-       return params;
+       r = regarray_find_by_id(p, regarray_id);
+       if (!r)
+               return -EINVAL;
 
-error:
-       selector_params_free(params);
-       return NULL;
+       strcpy(regarray->name, r->name);
+       regarray->size = r->size;
+       return 0;
 }
 
-static void
-selector_build_free(struct rte_swx_pipeline *p)
+int
+rte_swx_ctl_pipeline_regarray_read(struct rte_swx_pipeline *p,
+                                  const char *regarray_name,
+                                  uint32_t regarray_index,
+                                  uint64_t *value)
 {
-       uint32_t i;
+       struct regarray *regarray;
+       struct regarray_runtime *r;
 
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
-               uint32_t j;
+       if (!p || !regarray_name || !value)
+               return -EINVAL;
 
-               if (!t->selectors)
-                       continue;
+       regarray = regarray_find(p, regarray_name);
+       if (!regarray || (regarray_index >= regarray->size))
+               return -EINVAL;
 
-               for (j = 0; j < p->n_selectors; j++) {
-                       struct selector_runtime *r = &t->selectors[j];
+       r = &p->regarray_runtime[regarray->id];
+       *value = r->regarray[regarray_index];
+       return 0;
+}
 
-                       free(r->mailbox);
-               }
+int
+rte_swx_ctl_pipeline_regarray_write(struct rte_swx_pipeline *p,
+                                  const char *regarray_name,
+                                  uint32_t regarray_index,
+                                  uint64_t value)
+{
+       struct regarray *regarray;
+       struct regarray_runtime *r;
 
-               free(t->selectors);
-               t->selectors = NULL;
-       }
+       if (!p || !regarray_name)
+               return -EINVAL;
 
-       free(p->selector_stats);
-       p->selector_stats = NULL;
+       regarray = regarray_find(p, regarray_name);
+       if (!regarray || (regarray_index >= regarray->size))
+               return -EINVAL;
+
+       r = &p->regarray_runtime[regarray->id];
+       r->regarray[regarray_index] = value;
+       return 0;
 }
 
-static int
-selector_build(struct rte_swx_pipeline *p)
+int
+rte_swx_ctl_metarray_info_get(struct rte_swx_pipeline *p,
+                             uint32_t metarray_id,
+                             struct rte_swx_ctl_metarray_info *metarray)
 {
-       uint32_t i;
-       int status = 0;
-
-       /* Per pipeline: selector statistics. */
-       p->selector_stats = calloc(p->n_selectors, sizeof(struct selector_statistics));
-       if (!p->selector_stats) {
-               status = -ENOMEM;
-               goto error;
-       }
+       struct metarray *m;
 
-       /* Per thread: selector run-time. */
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
-               struct selector *s;
+       if (!p || !metarray)
+               return -EINVAL;
 
-               t->selectors = calloc(p->n_selectors, sizeof(struct selector_runtime));
-               if (!t->selectors) {
-                       status = -ENOMEM;
-                       goto error;
-               }
+       m = metarray_find_by_id(p, metarray_id);
+       if (!m)
+               return -EINVAL;
 
-               TAILQ_FOREACH(s, &p->selectors, node) {
-                       struct selector_runtime *r = &t->selectors[s->id];
-                       uint64_t size;
+       strcpy(metarray->name, m->name);
+       metarray->size = m->size;
+       return 0;
+}
 
-                       /* r->mailbox. */
-                       size = rte_swx_table_selector_mailbox_size_get();
-                       if (size) {
-                               r->mailbox = calloc(1, size);
-                               if (!r->mailbox) {
-                                       status = -ENOMEM;
-                                       goto error;
-                               }
-                       }
+int
+rte_swx_ctl_meter_profile_add(struct rte_swx_pipeline *p,
+                             const char *name,
+                             struct rte_meter_trtcm_params *params)
+{
+       struct meter_profile *mp;
+       int status;
 
-                       /* r->group_id_buffer. */
-                       r->group_id_buffer = &t->structs[p->metadata_struct_id];
+       CHECK(p, EINVAL);
+       CHECK_NAME(name, EINVAL);
+       CHECK(params, EINVAL);
+       CHECK(!meter_profile_find(p, name), EEXIST);
 
-                       /* r->selector_buffer. */
-                       r->selector_buffer = s->selector_header ?
-                               &t->structs[s->selector_header->struct_id] :
-                               &t->structs[p->metadata_struct_id];
+       /* Node allocation. */
+       mp = calloc(1, sizeof(struct meter_profile));
+       CHECK(mp, ENOMEM);
 
-                       /* r->member_id_buffer. */
-                       r->member_id_buffer = &t->structs[p->metadata_struct_id];
-               }
+       /* Node initialization. */
+       strcpy(mp->name, name);
+       memcpy(&mp->params, params, sizeof(struct rte_meter_trtcm_params));
+       status = rte_meter_trtcm_profile_config(&mp->profile, params);
+       if (status) {
+               free(mp);
+               CHECK(0, EINVAL);
        }
 
-       return 0;
+       /* Node add to tailq. */
+       TAILQ_INSERT_TAIL(&p->meter_profiles, mp, node);
 
-error:
-       selector_build_free(p);
-       return status;
+       return 0;
 }
 
-static void
-selector_free(struct rte_swx_pipeline *p)
+int
+rte_swx_ctl_meter_profile_delete(struct rte_swx_pipeline *p,
+                                const char *name)
 {
-       selector_build_free(p);
+       struct meter_profile *mp;
 
-       /* Selector tables. */
-       for ( ; ; ) {
-               struct selector *elem;
+       CHECK(p, EINVAL);
+       CHECK_NAME(name, EINVAL);
 
-               elem = TAILQ_FIRST(&p->selectors);
-               if (!elem)
-                       break;
+       mp = meter_profile_find(p, name);
+       CHECK(mp, EINVAL);
+       CHECK(!mp->n_users, EBUSY);
 
-               TAILQ_REMOVE(&p->selectors, elem, node);
-               free(elem->selector_fields);
-               free(elem);
-       }
+       /* Remove node from tailq. */
+       TAILQ_REMOVE(&p->meter_profiles, mp, node);
+       free(mp);
+
+       return 0;
 }
 
-/*
- * Table state.
- */
-static int
-table_state_build(struct rte_swx_pipeline *p)
+int
+rte_swx_ctl_meter_reset(struct rte_swx_pipeline *p,
+                       const char *metarray_name,
+                       uint32_t metarray_index)
 {
-       struct table *table;
-       struct selector *s;
+       struct meter_profile *mp_old;
+       struct metarray *metarray;
+       struct metarray_runtime *metarray_runtime;
+       struct meter *m;
 
-       p->table_state = calloc(p->n_tables + p->n_selectors,
-                               sizeof(struct rte_swx_table_state));
-       CHECK(p->table_state, ENOMEM);
+       CHECK(p, EINVAL);
+       CHECK_NAME(metarray_name, EINVAL);
 
-       TAILQ_FOREACH(table, &p->tables, node) {
-               struct rte_swx_table_state *ts = &p->table_state[table->id];
+       metarray = metarray_find(p, metarray_name);
+       CHECK(metarray, EINVAL);
+       CHECK(metarray_index < metarray->size, EINVAL);
 
-               if (table->type) {
-                       struct rte_swx_table_params *params;
+       metarray_runtime = &p->metarray_runtime[metarray->id];
+       m = &metarray_runtime->metarray[metarray_index];
+       mp_old = m->profile;
 
-                       /* ts->obj. */
-                       params = table_params_get(table);
-                       CHECK(params, ENOMEM);
+       meter_init(m);
 
-                       ts->obj = table->type->ops.create(params,
-                               NULL,
-                               table->args,
-                               p->numa_node);
+       mp_old->n_users--;
 
-                       table_params_free(params);
-                       CHECK(ts->obj, ENODEV);
-               }
+       return 0;
+}
 
-               /* ts->default_action_data. */
-               if (table->action_data_size_max) {
-                       ts->default_action_data =
-                               malloc(table->action_data_size_max);
-                       CHECK(ts->default_action_data, ENOMEM);
+int
+rte_swx_ctl_meter_set(struct rte_swx_pipeline *p,
+                     const char *metarray_name,
+                     uint32_t metarray_index,
+                     const char *profile_name)
+{
+       struct meter_profile *mp, *mp_old;
+       struct metarray *metarray;
+       struct metarray_runtime *metarray_runtime;
+       struct meter *m;
 
-                       memcpy(ts->default_action_data,
-                              table->default_action_data,
-                              table->action_data_size_max);
-               }
+       CHECK(p, EINVAL);
+       CHECK_NAME(metarray_name, EINVAL);
 
-               /* ts->default_action_id. */
-               ts->default_action_id = table->default_action->id;
-       }
+       metarray = metarray_find(p, metarray_name);
+       CHECK(metarray, EINVAL);
+       CHECK(metarray_index < metarray->size, EINVAL);
 
-       TAILQ_FOREACH(s, &p->selectors, node) {
-               struct rte_swx_table_state *ts = &p->table_state[p->n_tables + s->id];
-               struct rte_swx_table_selector_params *params;
+       mp = meter_profile_find(p, profile_name);
+       CHECK(mp, EINVAL);
 
-               /* ts->obj. */
-               params = selector_table_params_get(s);
-               CHECK(params, ENOMEM);
+       metarray_runtime = &p->metarray_runtime[metarray->id];
+       m = &metarray_runtime->metarray[metarray_index];
+       mp_old = m->profile;
 
-               ts->obj = rte_swx_table_selector_create(params, NULL, p->numa_node);
+       memset(m, 0, sizeof(struct meter));
+       rte_meter_trtcm_config(&m->m, &mp->profile);
+       m->profile = mp;
+       m->color_mask = RTE_COLORS;
 
-               selector_params_free(params);
-               CHECK(ts->obj, ENODEV);
-       }
+       mp->n_users++;
+       mp_old->n_users--;
 
        return 0;
 }
 
-static void
-table_state_build_free(struct rte_swx_pipeline *p)
+int
+rte_swx_ctl_meter_stats_read(struct rte_swx_pipeline *p,
+                            const char *metarray_name,
+                            uint32_t metarray_index,
+                            struct rte_swx_ctl_meter_stats *stats)
 {
-       uint32_t i;
-
-       if (!p->table_state)
-               return;
-
-       for (i = 0; i < p->n_tables; i++) {
-               struct rte_swx_table_state *ts = &p->table_state[i];
-               struct table *table = table_find_by_id(p, i);
+       struct metarray *metarray;
+       struct metarray_runtime *metarray_runtime;
+       struct meter *m;
 
-               /* ts->obj. */
-               if (table->type && ts->obj)
-                       table->type->ops.free(ts->obj);
+       CHECK(p, EINVAL);
+       CHECK_NAME(metarray_name, EINVAL);
 
-               /* ts->default_action_data. */
-               free(ts->default_action_data);
-       }
+       metarray = metarray_find(p, metarray_name);
+       CHECK(metarray, EINVAL);
+       CHECK(metarray_index < metarray->size, EINVAL);
 
-       for (i = 0; i < p->n_selectors; i++) {
-               struct rte_swx_table_state *ts = &p->table_state[p->n_tables + i];
+       CHECK(stats, EINVAL);
 
-               /* ts->obj. */
-               if (ts->obj)
-                       rte_swx_table_selector_free(ts->obj);
-       }
+       metarray_runtime = &p->metarray_runtime[metarray->id];
+       m = &metarray_runtime->metarray[metarray_index];
 
-       free(p->table_state);
-       p->table_state = NULL;
-}
+       memcpy(stats->n_pkts, m->n_pkts, sizeof(m->n_pkts));
+       memcpy(stats->n_bytes, m->n_bytes, sizeof(m->n_bytes));
 
-static void
-table_state_free(struct rte_swx_pipeline *p)
-{
-       table_state_build_free(p);
+       return 0;
 }
 
 /*
- * Register array.
+ * Pipeline compilation.
  */
-static struct regarray *
-regarray_find(struct rte_swx_pipeline *p, const char *name)
-{
-       struct regarray *elem;
-
-       TAILQ_FOREACH(elem, &p->regarrays, node)
-               if (!strcmp(elem->name, name))
-                       return elem;
-
-       return NULL;
-}
-
-static struct regarray *
-regarray_find_by_id(struct rte_swx_pipeline *p, uint32_t id)
+static const char *
+instr_type_to_name(struct instruction *instr)
 {
-       struct regarray *elem = NULL;
-
-       TAILQ_FOREACH(elem, &p->regarrays, node)
-               if (elem->id == id)
-                       return elem;
-
-       return NULL;
-}
+       switch (instr->type) {
+       case INSTR_RX: return "INSTR_RX";
+
+       case INSTR_TX: return "INSTR_TX";
+       case INSTR_TX_I: return "INSTR_TX_I";
+
+       case INSTR_HDR_EXTRACT: return "INSTR_HDR_EXTRACT";
+       case INSTR_HDR_EXTRACT2: return "INSTR_HDR_EXTRACT2";
+       case INSTR_HDR_EXTRACT3: return "INSTR_HDR_EXTRACT3";
+       case INSTR_HDR_EXTRACT4: return "INSTR_HDR_EXTRACT4";
+       case INSTR_HDR_EXTRACT5: return "INSTR_HDR_EXTRACT5";
+       case INSTR_HDR_EXTRACT6: return "INSTR_HDR_EXTRACT6";
+       case INSTR_HDR_EXTRACT7: return "INSTR_HDR_EXTRACT7";
+       case INSTR_HDR_EXTRACT8: return "INSTR_HDR_EXTRACT8";
+
+       case INSTR_HDR_EXTRACT_M: return "INSTR_HDR_EXTRACT_M";
+
+       case INSTR_HDR_LOOKAHEAD: return "INSTR_HDR_LOOKAHEAD";
+
+       case INSTR_HDR_EMIT: return "INSTR_HDR_EMIT";
+       case INSTR_HDR_EMIT_TX: return "INSTR_HDR_EMIT_TX";
+       case INSTR_HDR_EMIT2_TX: return "INSTR_HDR_EMIT2_TX";
+       case INSTR_HDR_EMIT3_TX: return "INSTR_HDR_EMIT3_TX";
+       case INSTR_HDR_EMIT4_TX: return "INSTR_HDR_EMIT4_TX";
+       case INSTR_HDR_EMIT5_TX: return "INSTR_HDR_EMIT5_TX";
+       case INSTR_HDR_EMIT6_TX: return "INSTR_HDR_EMIT6_TX";
+       case INSTR_HDR_EMIT7_TX: return "INSTR_HDR_EMIT7_TX";
+       case INSTR_HDR_EMIT8_TX: return "INSTR_HDR_EMIT8_TX";
+
+       case INSTR_HDR_VALIDATE: return "INSTR_HDR_VALIDATE";
+       case INSTR_HDR_INVALIDATE: return "INSTR_HDR_INVALIDATE";
+
+       case INSTR_MOV: return "INSTR_MOV";
+       case INSTR_MOV_MH: return "INSTR_MOV_MH";
+       case INSTR_MOV_HM: return "INSTR_MOV_HM";
+       case INSTR_MOV_HH: return "INSTR_MOV_HH";
+       case INSTR_MOV_I: return "INSTR_MOV_I";
+
+       case INSTR_DMA_HT: return "INSTR_DMA_HT";
+       case INSTR_DMA_HT2: return "INSTR_DMA_HT2";
+       case INSTR_DMA_HT3: return "INSTR_DMA_HT3";
+       case INSTR_DMA_HT4: return "INSTR_DMA_HT4";
+       case INSTR_DMA_HT5: return "INSTR_DMA_HT5";
+       case INSTR_DMA_HT6: return "INSTR_DMA_HT6";
+       case INSTR_DMA_HT7: return "INSTR_DMA_HT7";
+       case INSTR_DMA_HT8: return "INSTR_DMA_HT8";
+
+       case INSTR_ALU_ADD: return "INSTR_ALU_ADD";
+       case INSTR_ALU_ADD_MH: return "INSTR_ALU_ADD_MH";
+       case INSTR_ALU_ADD_HM: return "INSTR_ALU_ADD_HM";
+       case INSTR_ALU_ADD_HH: return "INSTR_ALU_ADD_HH";
+       case INSTR_ALU_ADD_MI: return "INSTR_ALU_ADD_MI";
+       case INSTR_ALU_ADD_HI: return "INSTR_ALU_ADD_HI";
+
+       case INSTR_ALU_SUB: return "INSTR_ALU_SUB";
+       case INSTR_ALU_SUB_MH: return "INSTR_ALU_SUB_MH";
+       case INSTR_ALU_SUB_HM: return "INSTR_ALU_SUB_HM";
+       case INSTR_ALU_SUB_HH: return "INSTR_ALU_SUB_HH";
+       case INSTR_ALU_SUB_MI: return "INSTR_ALU_SUB_MI";
+       case INSTR_ALU_SUB_HI: return "INSTR_ALU_SUB_HI";
+
+       case INSTR_ALU_CKADD_FIELD: return "INSTR_ALU_CKADD_FIELD";
+       case INSTR_ALU_CKADD_STRUCT20: return "INSTR_ALU_CKADD_STRUCT20";
+       case INSTR_ALU_CKADD_STRUCT: return "INSTR_ALU_CKADD_STRUCT";
+       case INSTR_ALU_CKSUB_FIELD: return "INSTR_ALU_CKSUB_FIELD";
+
+       case INSTR_ALU_AND: return "INSTR_ALU_AND";
+       case INSTR_ALU_AND_MH: return "INSTR_ALU_AND_MH";
+       case INSTR_ALU_AND_HM: return "INSTR_ALU_AND_HM";
+       case INSTR_ALU_AND_HH: return "INSTR_ALU_AND_HH";
+       case INSTR_ALU_AND_I: return "INSTR_ALU_AND_I";
+
+       case INSTR_ALU_OR: return "INSTR_ALU_OR";
+       case INSTR_ALU_OR_MH: return "INSTR_ALU_OR_MH";
+       case INSTR_ALU_OR_HM: return "INSTR_ALU_OR_HM";
+       case INSTR_ALU_OR_HH: return "INSTR_ALU_OR_HH";
+       case INSTR_ALU_OR_I: return "INSTR_ALU_OR_I";
+
+       case INSTR_ALU_XOR: return "INSTR_ALU_XOR";
+       case INSTR_ALU_XOR_MH: return "INSTR_ALU_XOR_MH";
+       case INSTR_ALU_XOR_HM: return "INSTR_ALU_XOR_HM";
+       case INSTR_ALU_XOR_HH: return "INSTR_ALU_XOR_HH";
+       case INSTR_ALU_XOR_I: return "INSTR_ALU_XOR_I";
+
+       case INSTR_ALU_SHL: return "INSTR_ALU_SHL";
+       case INSTR_ALU_SHL_MH: return "INSTR_ALU_SHL_MH";
+       case INSTR_ALU_SHL_HM: return "INSTR_ALU_SHL_HM";
+       case INSTR_ALU_SHL_HH: return "INSTR_ALU_SHL_HH";
+       case INSTR_ALU_SHL_MI: return "INSTR_ALU_SHL_MI";
+       case INSTR_ALU_SHL_HI: return "INSTR_ALU_SHL_HI";
+
+       case INSTR_ALU_SHR: return "INSTR_ALU_SHR";
+       case INSTR_ALU_SHR_MH: return "INSTR_ALU_SHR_MH";
+       case INSTR_ALU_SHR_HM: return "INSTR_ALU_SHR_HM";
+       case INSTR_ALU_SHR_HH: return "INSTR_ALU_SHR_HH";
+       case INSTR_ALU_SHR_MI: return "INSTR_ALU_SHR_MI";
+       case INSTR_ALU_SHR_HI: return "INSTR_ALU_SHR_HI";
+
+       case INSTR_REGPREFETCH_RH: return "INSTR_REGPREFETCH_RH";
+       case INSTR_REGPREFETCH_RM: return "INSTR_REGPREFETCH_RM";
+       case INSTR_REGPREFETCH_RI: return "INSTR_REGPREFETCH_RI";
+
+       case INSTR_REGRD_HRH: return "INSTR_REGRD_HRH";
+       case INSTR_REGRD_HRM: return "INSTR_REGRD_HRM";
+       case INSTR_REGRD_HRI: return "INSTR_REGRD_HRI";
+       case INSTR_REGRD_MRH: return "INSTR_REGRD_MRH";
+       case INSTR_REGRD_MRM: return "INSTR_REGRD_MRM";
+       case INSTR_REGRD_MRI: return "INSTR_REGRD_MRI";
+
+       case INSTR_REGWR_RHH: return "INSTR_REGWR_RHH";
+       case INSTR_REGWR_RHM: return "INSTR_REGWR_RHM";
+       case INSTR_REGWR_RHI: return "INSTR_REGWR_RHI";
+       case INSTR_REGWR_RMH: return "INSTR_REGWR_RMH";
+       case INSTR_REGWR_RMM: return "INSTR_REGWR_RMM";
+       case INSTR_REGWR_RMI: return "INSTR_REGWR_RMI";
+       case INSTR_REGWR_RIH: return "INSTR_REGWR_RIH";
+       case INSTR_REGWR_RIM: return "INSTR_REGWR_RIM";
+       case INSTR_REGWR_RII: return "INSTR_REGWR_RII";
+
+       case INSTR_REGADD_RHH: return "INSTR_REGADD_RHH";
+       case INSTR_REGADD_RHM: return "INSTR_REGADD_RHM";
+       case INSTR_REGADD_RHI: return "INSTR_REGADD_RHI";
+       case INSTR_REGADD_RMH: return "INSTR_REGADD_RMH";
+       case INSTR_REGADD_RMM: return "INSTR_REGADD_RMM";
+       case INSTR_REGADD_RMI: return "INSTR_REGADD_RMI";
+       case INSTR_REGADD_RIH: return "INSTR_REGADD_RIH";
+       case INSTR_REGADD_RIM: return "INSTR_REGADD_RIM";
+       case INSTR_REGADD_RII: return "INSTR_REGADD_RII";
+
+       case INSTR_METPREFETCH_H: return "INSTR_METPREFETCH_H";
+       case INSTR_METPREFETCH_M: return "INSTR_METPREFETCH_M";
+       case INSTR_METPREFETCH_I: return "INSTR_METPREFETCH_I";
+
+       case INSTR_METER_HHM: return "INSTR_METER_HHM";
+       case INSTR_METER_HHI: return "INSTR_METER_HHI";
+       case INSTR_METER_HMM: return "INSTR_METER_HMM";
+       case INSTR_METER_HMI: return "INSTR_METER_HMI";
+       case INSTR_METER_MHM: return "INSTR_METER_MHM";
+       case INSTR_METER_MHI: return "INSTR_METER_MHI";
+       case INSTR_METER_MMM: return "INSTR_METER_MMM";
+       case INSTR_METER_MMI: return "INSTR_METER_MMI";
+       case INSTR_METER_IHM: return "INSTR_METER_IHM";
+       case INSTR_METER_IHI: return "INSTR_METER_IHI";
+       case INSTR_METER_IMM: return "INSTR_METER_IMM";
+       case INSTR_METER_IMI: return "INSTR_METER_IMI";
+
+       case INSTR_TABLE: return "INSTR_TABLE";
+       case INSTR_TABLE_AF: return "INSTR_TABLE_AF";
+       case INSTR_SELECTOR: return "INSTR_SELECTOR";
+       case INSTR_LEARNER: return "INSTR_LEARNER";
+       case INSTR_LEARNER_AF: return "INSTR_LEARNER_AF";
+
+       case INSTR_LEARNER_LEARN: return "INSTR_LEARNER_LEARN";
+       case INSTR_LEARNER_FORGET: return "INSTR_LEARNER_FORGET";
+
+       case INSTR_EXTERN_OBJ: return "INSTR_EXTERN_OBJ";
+       case INSTR_EXTERN_FUNC: return "INSTR_EXTERN_FUNC";
+
+       case INSTR_JMP: return "INSTR_JMP";
+       case INSTR_JMP_VALID: return "INSTR_JMP_VALID";
+       case INSTR_JMP_INVALID: return "INSTR_JMP_INVALID";
+       case INSTR_JMP_HIT: return "INSTR_JMP_HIT";
+       case INSTR_JMP_MISS: return "INSTR_JMP_MISS";
+       case INSTR_JMP_ACTION_HIT: return "INSTR_JMP_ACTION_HIT";
+       case INSTR_JMP_ACTION_MISS: return "INSTR_JMP_ACTION_MISS";
+       case INSTR_JMP_EQ: return "INSTR_JMP_EQ";
+       case INSTR_JMP_EQ_MH: return "INSTR_JMP_EQ_MH";
+       case INSTR_JMP_EQ_HM: return "INSTR_JMP_EQ_HM";
+       case INSTR_JMP_EQ_HH: return "INSTR_JMP_EQ_HH";
+       case INSTR_JMP_EQ_I: return "INSTR_JMP_EQ_I";
+       case INSTR_JMP_NEQ: return "INSTR_JMP_NEQ";
+       case INSTR_JMP_NEQ_MH: return "INSTR_JMP_NEQ_MH";
+       case INSTR_JMP_NEQ_HM: return "INSTR_JMP_NEQ_HM";
+       case INSTR_JMP_NEQ_HH: return "INSTR_JMP_NEQ_HH";
+       case INSTR_JMP_NEQ_I: return "INSTR_JMP_NEQ_I";
+       case INSTR_JMP_LT: return "INSTR_JMP_LT";
+       case INSTR_JMP_LT_MH: return "INSTR_JMP_LT_MH";
+       case INSTR_JMP_LT_HM: return "INSTR_JMP_LT_HM";
+       case INSTR_JMP_LT_HH: return "INSTR_JMP_LT_HH";
+       case INSTR_JMP_LT_MI: return "INSTR_JMP_LT_MI";
+       case INSTR_JMP_LT_HI: return "INSTR_JMP_LT_HI";
+       case INSTR_JMP_GT: return "INSTR_JMP_GT";
+       case INSTR_JMP_GT_MH: return "INSTR_JMP_GT_MH";
+       case INSTR_JMP_GT_HM: return "INSTR_JMP_GT_HM";
+       case INSTR_JMP_GT_HH: return "INSTR_JMP_GT_HH";
+       case INSTR_JMP_GT_MI: return "INSTR_JMP_GT_MI";
+       case INSTR_JMP_GT_HI: return "INSTR_JMP_GT_HI";
+
+       case INSTR_RETURN: return "INSTR_RETURN";
+
+       default: return "INSTR_UNKNOWN";
+       }
+}
+
+typedef void
+(*instruction_export_t)(struct instruction *, FILE *);
 
-int
-rte_swx_pipeline_regarray_config(struct rte_swx_pipeline *p,
-                             const char *name,
-                             uint32_t size,
-                             uint64_t init_val)
-{
-       struct regarray *r;
+static void
+instr_io_export(struct instruction *instr, FILE *f)
+{
+       uint32_t n_io = 0, n_io_imm = 0, n_hdrs = 0, i;
+
+       /* n_io, n_io_imm, n_hdrs. */
+       if (instr->type == INSTR_RX ||
+           instr->type == INSTR_TX ||
+           instr->type == INSTR_HDR_EXTRACT_M ||
+           (instr->type >= INSTR_HDR_EMIT_TX && instr->type <= INSTR_HDR_EMIT8_TX))
+               n_io = 1;
 
-       CHECK(p, EINVAL);
+       if (instr->type == INSTR_TX_I)
+               n_io_imm = 1;
 
-       CHECK_NAME(name, EINVAL);
-       CHECK(!regarray_find(p, name), EEXIST);
+       if (instr->type >= INSTR_HDR_EXTRACT && instr->type <= INSTR_HDR_EXTRACT8)
+               n_hdrs = 1 + (instr->type - INSTR_HDR_EXTRACT);
 
-       CHECK(size, EINVAL);
-       size = rte_align32pow2(size);
+       if (instr->type == INSTR_HDR_EXTRACT_M ||
+           instr->type == INSTR_HDR_LOOKAHEAD ||
+           instr->type == INSTR_HDR_EMIT)
+               n_hdrs = 1;
 
-       /* Memory allocation. */
-       r = calloc(1, sizeof(struct regarray));
-       CHECK(r, ENOMEM);
+       if (instr->type >= INSTR_HDR_EMIT_TX && instr->type <= INSTR_HDR_EMIT8_TX)
+               n_hdrs = 1 + (instr->type - INSTR_HDR_EMIT_TX);
 
-       /* Node initialization. */
-       strcpy(r->name, name);
-       r->init_val = init_val;
-       r->size = size;
-       r->id = p->n_regarrays;
+       /* instr. */
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n",
+               instr_type_to_name(instr));
 
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->regarrays, r, node);
-       p->n_regarrays++;
+       /* instr.io. */
+       fprintf(f,
+               "\t\t.io = {\n");
 
-       return 0;
-}
+       /* instr.io.io. */
+       if (n_io)
+               fprintf(f,
+                       "\t\t\t.io = {\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t},\n",
+                       instr->io.io.offset,
+                       instr->io.io.n_bits);
 
-static int
-regarray_build(struct rte_swx_pipeline *p)
-{
-       struct regarray *regarray;
+       if (n_io_imm)
+               fprintf(f,
+                       "\t\t\t.io = {\n"
+                       "\t\t\t\t.val = %u,\n"
+                       "\t\t\t},\n",
+                       instr->io.io.val);
 
-       if (!p->n_regarrays)
-               return 0;
+       /* instr.io.hdr. */
+       if (n_hdrs) {
+               fprintf(f,
+                       "\t\t.hdr = {\n");
 
-       p->regarray_runtime = calloc(p->n_regarrays, sizeof(struct regarray_runtime));
-       CHECK(p->regarray_runtime, ENOMEM);
+               /* instr.io.hdr.header_id. */
+               fprintf(f,
+                       "\t\t\t.header_id = {");
 
-       TAILQ_FOREACH(regarray, &p->regarrays, node) {
-               struct regarray_runtime *r = &p->regarray_runtime[regarray->id];
-               uint32_t i;
+               for (i = 0; i < n_hdrs; i++)
+                       fprintf(f,
+                               "%u, ",
+                               instr->io.hdr.header_id[i]);
 
-               r->regarray = env_malloc(regarray->size * sizeof(uint64_t),
-                                        RTE_CACHE_LINE_SIZE,
-                                        p->numa_node);
-               CHECK(r->regarray, ENOMEM);
+               fprintf(f,
+                       "},\n");
 
-               if (regarray->init_val)
-                       for (i = 0; i < regarray->size; i++)
-                               r->regarray[i] = regarray->init_val;
+               /* instr.io.hdr.struct_id. */
+               fprintf(f,
+                       "\t\t\t.struct_id = {");
 
-               r->size_mask = regarray->size - 1;
-       }
+               for (i = 0; i < n_hdrs; i++)
+                       fprintf(f,
+                               "%u, ",
+                               instr->io.hdr.struct_id[i]);
 
-       return 0;
-}
+               fprintf(f,
+                       "},\n");
 
-static void
-regarray_build_free(struct rte_swx_pipeline *p)
-{
-       uint32_t i;
+               /* instr.io.hdr.n_bytes. */
+               fprintf(f,
+                       "\t\t\t.n_bytes = {");
 
-       if (!p->regarray_runtime)
-               return;
+               for (i = 0; i < n_hdrs; i++)
+                       fprintf(f,
+                               "%u, ",
+                               instr->io.hdr.n_bytes[i]);
 
-       for (i = 0; i < p->n_regarrays; i++) {
-               struct regarray *regarray = regarray_find_by_id(p, i);
-               struct regarray_runtime *r = &p->regarray_runtime[i];
+               fprintf(f,
+                       "},\n");
 
-               env_free(r->regarray, regarray->size * sizeof(uint64_t));
+               /* instr.io.hdr - closing curly brace. */
+               fprintf(f,
+                       "\t\t\t}\n,");
        }
 
-       free(p->regarray_runtime);
-       p->regarray_runtime = NULL;
+       /* instr.io - closing curly brace. */
+       fprintf(f,
+               "\t\t},\n");
+
+       /* instr - closing curly brace. */
+       fprintf(f,
+               "\t},\n");
 }
 
 static void
-regarray_free(struct rte_swx_pipeline *p)
+instr_hdr_validate_export(struct instruction *instr, FILE *f)
 {
-       regarray_build_free(p);
-
-       for ( ; ; ) {
-               struct regarray *elem;
-
-               elem = TAILQ_FIRST(&p->regarrays);
-               if (!elem)
-                       break;
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n"
+               "\t\t.valid = {\n"
+               "\t\t\t.header_id = %u,\n"
+               "\t\t},\n"
+               "\t},\n",
+               instr_type_to_name(instr),
+               instr->valid.header_id);
+}
 
-               TAILQ_REMOVE(&p->regarrays, elem, node);
-               free(elem);
-       }
+static void
+instr_mov_export(struct instruction *instr, FILE *f)
+{
+       if (instr->type != INSTR_MOV_I)
+               fprintf(f,
+                       "\t{\n"
+                       "\t\t.type = %s,\n"
+                       "\t\t.mov = {\n"
+                       "\t\t\t.dst = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n"
+                       "\t\t\t.src = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n"
+                       "\t\t},\n"
+                       "\t},\n",
+                       instr_type_to_name(instr),
+                       instr->mov.dst.struct_id,
+                       instr->mov.dst.n_bits,
+                       instr->mov.dst.offset,
+                       instr->mov.src.struct_id,
+                       instr->mov.src.n_bits,
+                       instr->mov.src.offset);
+       else
+               fprintf(f,
+                       "\t{\n"
+                       "\t\t.type = %s,\n"
+                       "\t\t.mov = {\n"
+                       "\t\t\t.dst = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t}\n,"
+                       "\t\t\t.src_val = %" PRIu64 ",\n"
+                       "\t\t},\n"
+                       "\t},\n",
+                       instr_type_to_name(instr),
+                       instr->mov.dst.struct_id,
+                       instr->mov.dst.n_bits,
+                       instr->mov.dst.offset,
+                       instr->mov.src_val);
 }
 
-/*
- * Meter array.
- */
-static struct meter_profile *
-meter_profile_find(struct rte_swx_pipeline *p, const char *name)
+static void
+instr_dma_ht_export(struct instruction *instr, FILE *f)
 {
-       struct meter_profile *elem;
+       uint32_t n_dma = 0, i;
 
-       TAILQ_FOREACH(elem, &p->meter_profiles, node)
-               if (!strcmp(elem->name, name))
-                       return elem;
+       /* n_dma. */
+       n_dma = 1 + (instr->type - INSTR_DMA_HT);
 
-       return NULL;
-}
+       /* instr. */
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n",
+               instr_type_to_name(instr));
 
-static struct metarray *
-metarray_find(struct rte_swx_pipeline *p, const char *name)
-{
-       struct metarray *elem;
+       /* instr.dma. */
+       fprintf(f,
+               "\t\t.dma = {\n");
 
-       TAILQ_FOREACH(elem, &p->metarrays, node)
-               if (!strcmp(elem->name, name))
-                       return elem;
+       /* instr.dma.dst. */
+       fprintf(f,
+               "\t\t\t.dst = {\n");
 
-       return NULL;
-}
+       /* instr.dma.dst.header_id. */
+       fprintf(f,
+               "\t\t\t\t.header_id = {");
 
-static struct metarray *
-metarray_find_by_id(struct rte_swx_pipeline *p, uint32_t id)
-{
-       struct metarray *elem = NULL;
+       for (i = 0; i < n_dma; i++)
+               fprintf(f,
+                       "%u, ",
+                       instr->dma.dst.header_id[i]);
 
-       TAILQ_FOREACH(elem, &p->metarrays, node)
-               if (elem->id == id)
-                       return elem;
+       fprintf(f,
+               "},\n");
 
-       return NULL;
-}
+       /* instr.dma.dst.struct_id. */
+       fprintf(f,
+               "\t\t\t\t.struct_id = {");
 
-int
-rte_swx_pipeline_metarray_config(struct rte_swx_pipeline *p,
-                                const char *name,
-                                uint32_t size)
-{
-       struct metarray *m;
+       for (i = 0; i < n_dma; i++)
+               fprintf(f,
+                       "%u, ",
+                       instr->dma.dst.struct_id[i]);
 
-       CHECK(p, EINVAL);
+       fprintf(f,
+               "},\n");
 
-       CHECK_NAME(name, EINVAL);
-       CHECK(!metarray_find(p, name), EEXIST);
+       /* instr.dma.dst - closing curly brace. */
+       fprintf(f,
+               "\t\t\t},\n");
 
-       CHECK(size, EINVAL);
-       size = rte_align32pow2(size);
+       /* instr.dma.src. */
+       fprintf(f,
+               "\t\t\t.src = {\n");
 
-       /* Memory allocation. */
-       m = calloc(1, sizeof(struct metarray));
-       CHECK(m, ENOMEM);
+       /* instr.dma.src.offset. */
+       fprintf(f,
+               "\t\t\t\t.offset = {");
 
-       /* Node initialization. */
-       strcpy(m->name, name);
-       m->size = size;
-       m->id = p->n_metarrays;
+       for (i = 0; i < n_dma; i++)
+               fprintf(f,
+                       "%u, ",
+                       instr->dma.src.offset[i]);
 
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->metarrays, m, node);
-       p->n_metarrays++;
+       fprintf(f,
+               "},\n");
 
-       return 0;
-}
+       /* instr.dma.src - closing curly brace. */
+       fprintf(f,
+               "\t\t\t},\n");
 
-struct meter_profile meter_profile_default = {
-       .node = {0},
-       .name = "",
-       .params = {0},
+       /* instr.dma.n_bytes. */
+       fprintf(f,
+               "\t\t\t.n_bytes = {");
 
-       .profile = {
-               .cbs = 10000,
-               .pbs = 10000,
-               .cir_period = 1,
-               .cir_bytes_per_period = 1,
-               .pir_period = 1,
-               .pir_bytes_per_period = 1,
-       },
+       for (i = 0; i < n_dma; i++)
+               fprintf(f,
+                       "%u, ",
+                       instr->dma.n_bytes[i]);
 
-       .n_users = 0,
-};
+       fprintf(f,
+               "},\n");
 
-static void
-meter_init(struct meter *m)
-{
-       memset(m, 0, sizeof(struct meter));
-       rte_meter_trtcm_config(&m->m, &meter_profile_default.profile);
-       m->profile = &meter_profile_default;
-       m->color_mask = RTE_COLOR_GREEN;
+       /* instr.dma - closing curly brace. */
+       fprintf(f,
+               "\t\t},\n");
 
-       meter_profile_default.n_users++;
+       /* instr - closing curly brace. */
+       fprintf(f,
+               "\t},\n");
 }
 
-static int
-metarray_build(struct rte_swx_pipeline *p)
+static void
+instr_alu_export(struct instruction *instr, FILE *f)
+{
+       int imm = 0;
+
+       if (instr->type == INSTR_ALU_ADD_MI ||
+           instr->type == INSTR_ALU_ADD_HI ||
+           instr->type == INSTR_ALU_SUB_MI ||
+           instr->type == INSTR_ALU_SUB_HI ||
+           instr->type == INSTR_ALU_SHL_MI ||
+           instr->type == INSTR_ALU_SHL_HI ||
+           instr->type == INSTR_ALU_SHR_MI ||
+           instr->type == INSTR_ALU_SHR_HI ||
+           instr->type == INSTR_ALU_AND_I ||
+           instr->type == INSTR_ALU_OR_I ||
+           instr->type == INSTR_ALU_XOR_I)
+               imm = 1;
+
+       if (!imm)
+               fprintf(f,
+                       "\t{\n"
+                       "\t\t.type = %s,\n"
+                       "\t\t.alu = {\n"
+                       "\t\t\t.dst = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n"
+                       "\t\t\t.src = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n"
+                       "\t\t},\n"
+                       "\t},\n",
+                       instr_type_to_name(instr),
+                       instr->alu.dst.struct_id,
+                       instr->alu.dst.n_bits,
+                       instr->alu.dst.offset,
+                       instr->alu.src.struct_id,
+                       instr->alu.src.n_bits,
+                       instr->alu.src.offset);
+       else
+               fprintf(f,
+                       "\t{\n"
+                       "\t\t.type = %s,\n"
+                       "\t\t.alu = {\n"
+                       "\t\t\t.dst = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t}\n,"
+                       "\t\t\t.src_val = %" PRIu64 ",\n"
+                       "\t\t},\n"
+                       "\t},\n",
+                       instr_type_to_name(instr),
+                       instr->alu.dst.struct_id,
+                       instr->alu.dst.n_bits,
+                       instr->alu.dst.offset,
+                       instr->alu.src_val);
+}
+
+static void
+instr_reg_export(struct instruction *instr __rte_unused, FILE *f __rte_unused)
 {
-       struct metarray *m;
+       int prefetch  = 0, idx_imm = 0, src_imm = 0;
 
-       if (!p->n_metarrays)
-               return 0;
+       if (instr->type == INSTR_REGPREFETCH_RH ||
+           instr->type == INSTR_REGPREFETCH_RM ||
+           instr->type == INSTR_REGPREFETCH_RI)
+               prefetch = 1;
 
-       p->metarray_runtime = calloc(p->n_metarrays, sizeof(struct metarray_runtime));
-       CHECK(p->metarray_runtime, ENOMEM);
+       /* index is the 3rd operand for the regrd instruction and the 2nd
+        * operand for the regwr and regadd instructions.
+        */
+       if (instr->type == INSTR_REGPREFETCH_RI ||
+           instr->type == INSTR_REGRD_HRI ||
+           instr->type == INSTR_REGRD_MRI ||
+           instr->type == INSTR_REGWR_RIH ||
+           instr->type == INSTR_REGWR_RIM ||
+           instr->type == INSTR_REGWR_RII ||
+           instr->type == INSTR_REGADD_RIH ||
+           instr->type == INSTR_REGADD_RIM ||
+           instr->type == INSTR_REGADD_RII)
+               idx_imm = 1;
+
+       /* src is the 3rd operand for the regwr and regadd instructions. */
+       if (instr->type == INSTR_REGWR_RHI ||
+           instr->type == INSTR_REGWR_RMI ||
+           instr->type == INSTR_REGWR_RII ||
+           instr->type == INSTR_REGADD_RHI ||
+           instr->type == INSTR_REGADD_RMI ||
+           instr->type == INSTR_REGADD_RII)
+               src_imm = 1;
+
+       /* instr.regarray.regarray_id. */
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n"
+               "\t\t.regarray = {\n"
+               "\t\t\t.regarray_id = %u,\n",
+               instr_type_to_name(instr),
+               instr->regarray.regarray_id);
+
+       /* instr.regarray.idx / instr.regarray.idx_val. */
+       if (!idx_imm)
+               fprintf(f,
+                       "\t\t\t\t.idx = {\n"
+                       "\t\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t\t.offset = %u,\n"
+                       "\t\t\t\t},\n",
+                       instr->regarray.idx.struct_id,
+                       instr->regarray.idx.n_bits,
+                       instr->regarray.idx.offset);
+       else
+               fprintf(f,
+                       "\t\t\t\t.idx_val = %u,\n",
+                       instr->regarray.idx_val);
+
+       /* instr.regarray.dstsrc / instr.regarray.dstsrc_val. */
+       if (!prefetch) {
+               if (!src_imm)
+                       fprintf(f,
+                               "\t\t\t\t.dstsrc = {\n"
+                               "\t\t\t\t\t.struct_id = %u,\n"
+                               "\t\t\t\t\t.n_bits = %u,\n"
+                               "\t\t\t\t\t.offset = %u,\n"
+                               "\t\t\t\t},\n",
+                               instr->regarray.dstsrc.struct_id,
+                               instr->regarray.dstsrc.n_bits,
+                               instr->regarray.dstsrc.offset);
+               else
+                       fprintf(f,
+                               "\t\t\t\t.dstsrc_val = %" PRIu64 ",\n",
+                               instr->regarray.dstsrc_val);
+       }
+
+       /* instr.regarray and instr - closing curly braces. */
+       fprintf(f,
+               "\t\t},\n"
+               "\t},\n");
+}
 
-       TAILQ_FOREACH(m, &p->metarrays, node) {
-               struct metarray_runtime *r = &p->metarray_runtime[m->id];
-               uint32_t i;
+static void
+instr_meter_export(struct instruction *instr __rte_unused, FILE *f __rte_unused)
+{
+       int prefetch  = 0, idx_imm = 0, color_in_imm = 0;
+
+       if (instr->type == INSTR_METPREFETCH_H ||
+           instr->type == INSTR_METPREFETCH_M ||
+           instr->type == INSTR_METPREFETCH_I)
+               prefetch = 1;
+
+       /* idx_imm. */
+       if (instr->type == INSTR_METPREFETCH_I ||
+           instr->type == INSTR_METER_IHM ||
+           instr->type == INSTR_METER_IHI ||
+           instr->type == INSTR_METER_IMM ||
+           instr->type == INSTR_METER_IMI)
+               idx_imm = 1;
+
+       /* color_in_imm. */
+       if (instr->type == INSTR_METER_HHI ||
+           instr->type == INSTR_METER_HMI ||
+           instr->type == INSTR_METER_MHI ||
+           instr->type == INSTR_METER_MMI ||
+           instr->type == INSTR_METER_IHI ||
+           instr->type == INSTR_METER_IMI)
+               color_in_imm = 1;
+
+       /* instr.meter.metarray_id. */
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n"
+               "\t\t.meter = {\n"
+               "\t\t\t.metarray_id = %u,\n",
+               instr_type_to_name(instr),
+               instr->meter.metarray_id);
+
+       /* instr.meter.idx / instr.meter.idx_val. */
+       if (!idx_imm)
+               fprintf(f,
+                       "\t\t\t.idx = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n",
+                       instr->meter.idx.struct_id,
+                       instr->meter.idx.n_bits,
+                       instr->meter.idx.offset);
+       else
+               fprintf(f,
+                       "\t\t\t.idx_val = %u,\n",
+                       instr->meter.idx_val);
+
+       if (!prefetch) {
+               /* instr.meter.length. */
+               fprintf(f,
+                       "\t\t\t.length = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n",
+                       instr->meter.length.struct_id,
+                       instr->meter.length.n_bits,
+                       instr->meter.length.offset);
+
+               /* instr.meter.color_in / instr.meter.color_in_val. */
+               if (!color_in_imm)
+                       fprintf(f,
+                               "\t\t\t.color_in = {\n"
+                               "\t\t\t\t.struct_id = %u,\n"
+                               "\t\t\t\t.n_bits = %u,\n"
+                               "\t\t\t\t.offset = %u,\n"
+                               "\t\t\t},\n",
+                               instr->meter.color_in.struct_id,
+                               instr->meter.color_in.n_bits,
+                               instr->meter.color_in.offset);
+               else
+                       fprintf(f,
+                               "\t\t\t.color_in_val = %u,\n",
+                               (uint32_t)instr->meter.color_in_val);
+
+               /* instr.meter.color_out. */
+               fprintf(f,
+                       "\t\t\t.color_out = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n",
+                       instr->meter.color_out.struct_id,
+                       instr->meter.color_out.n_bits,
+                       instr->meter.color_out.offset);
+       }
+
+       /* instr.meter and instr - closing curly braces. */
+       fprintf(f,
+               "\t\t},\n"
+               "\t},\n");
+}
 
-               r->metarray = env_malloc(m->size * sizeof(struct meter),
-                                        RTE_CACHE_LINE_SIZE,
-                                        p->numa_node);
-               CHECK(r->metarray, ENOMEM);
+static void
+instr_table_export(struct instruction *instr,
+               FILE *f)
+{
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n"
+               "\t\t.table = {\n"
+               "\t\t\t.table_id = %u,\n"
+               "\t\t},\n"
+               "\t},\n",
+               instr_type_to_name(instr),
+               instr->table.table_id);
+}
 
-               for (i = 0; i < m->size; i++)
-                       meter_init(&r->metarray[i]);
+static void
+instr_learn_export(struct instruction *instr, FILE *f)
+{
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n"
+               "\t\t.learn = {\n"
+               "\t\t\t\t.action_id = %u,\n"
+               "\t\t},\n"
+               "\t},\n",
+               instr_type_to_name(instr),
+               instr->learn.action_id);
+}
 
-               r->size_mask = m->size - 1;
-       }
+static void
+instr_forget_export(struct instruction *instr, FILE *f)
+{
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n"
+               "\t},\n",
+               instr_type_to_name(instr));
+}
 
-       return 0;
+static void
+instr_extern_export(struct instruction *instr, FILE *f)
+{
+       if (instr->type == INSTR_EXTERN_OBJ)
+               fprintf(f,
+                       "\t{\n"
+                       "\t\t.type = %s,\n"
+                       "\t\t.ext_obj = {\n"
+                       "\t\t\t.ext_obj_id = %u,\n"
+                       "\t\t\t.func_id = %u,\n"
+                       "\t\t},\n"
+                       "\t},\n",
+                       instr_type_to_name(instr),
+                       instr->ext_obj.ext_obj_id,
+                       instr->ext_obj.func_id);
+       else
+               fprintf(f,
+                       "\t{\n"
+                       "\t\t.type = %s,\n"
+                       "\t\t.ext_func = {\n"
+                       "\t\t\t.ext_func_id = %u,\n"
+                       "\t\t},\n"
+                       "\t},\n",
+                       instr_type_to_name(instr),
+                       instr->ext_func.ext_func_id);
 }
 
 static void
-metarray_build_free(struct rte_swx_pipeline *p)
+instr_jmp_export(struct instruction *instr, FILE *f __rte_unused)
 {
-       uint32_t i;
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n"
+               "\t\t.jmp = {\n"
+               "\t\t\t.ip = NULL,\n",
+               instr_type_to_name(instr));
 
-       if (!p->metarray_runtime)
-               return;
+       switch (instr->type) {
+       case INSTR_JMP_VALID:
+       case INSTR_JMP_INVALID:
+               fprintf(f,
+                       "\t\t\t.header_id = %u,\n",
+                       instr->jmp.header_id);
+               break;
 
-       for (i = 0; i < p->n_metarrays; i++) {
-               struct metarray *m = metarray_find_by_id(p, i);
-               struct metarray_runtime *r = &p->metarray_runtime[i];
+       case INSTR_JMP_ACTION_HIT:
+       case INSTR_JMP_ACTION_MISS:
+               fprintf(f,
+                       "\t\t\t.action_id = %u,\n",
+                       instr->jmp.action_id);
+               break;
 
-               env_free(r->metarray, m->size * sizeof(struct meter));
+       case INSTR_JMP_EQ:
+       case INSTR_JMP_EQ_MH:
+       case INSTR_JMP_EQ_HM:
+       case INSTR_JMP_EQ_HH:
+       case INSTR_JMP_NEQ:
+       case INSTR_JMP_NEQ_MH:
+       case INSTR_JMP_NEQ_HM:
+       case INSTR_JMP_NEQ_HH:
+       case INSTR_JMP_LT:
+       case INSTR_JMP_LT_MH:
+       case INSTR_JMP_LT_HM:
+       case INSTR_JMP_LT_HH:
+       case INSTR_JMP_GT:
+       case INSTR_JMP_GT_MH:
+       case INSTR_JMP_GT_HM:
+       case INSTR_JMP_GT_HH:
+               fprintf(f,
+                       "\t\t\t.a = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n"
+                       "\t\t\t.b = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t},\n",
+                       instr->jmp.a.struct_id,
+                       instr->jmp.a.n_bits,
+                       instr->jmp.a.offset,
+                       instr->jmp.b.struct_id,
+                       instr->jmp.b.n_bits,
+                       instr->jmp.b.offset);
+               break;
+
+       case INSTR_JMP_EQ_I:
+       case INSTR_JMP_NEQ_I:
+       case INSTR_JMP_LT_MI:
+       case INSTR_JMP_LT_HI:
+       case INSTR_JMP_GT_MI:
+       case INSTR_JMP_GT_HI:
+               fprintf(f,
+                       "\t\t\t.a = {\n"
+                       "\t\t\t\t.struct_id = %u,\n"
+                       "\t\t\t\t.n_bits = %u,\n"
+                       "\t\t\t\t.offset = %u,\n"
+                       "\t\t\t}\n,"
+                       "\t\t\t.b_val = %" PRIu64 ",\n",
+                       instr->jmp.a.struct_id,
+                       instr->jmp.a.n_bits,
+                       instr->jmp.a.offset,
+                       instr->jmp.b_val);
+               break;
+
+       default:
+               break;
        }
 
-       free(p->metarray_runtime);
-       p->metarray_runtime = NULL;
+       fprintf(f,
+               "\t\t},\n"
+               "\t},\n");
 }
 
 static void
-metarray_free(struct rte_swx_pipeline *p)
+instr_return_export(struct instruction *instr,
+               FILE *f)
+{
+       fprintf(f,
+               "\t{\n"
+               "\t\t.type = %s,\n",
+               instr_type_to_name(instr));
+
+       fprintf(f,
+               "\t},\n");
+}
+
+static instruction_export_t export_table[] = {
+       [INSTR_RX] = instr_io_export,
+
+       [INSTR_TX] = instr_io_export,
+       [INSTR_TX_I] = instr_io_export,
+
+       [INSTR_HDR_EXTRACT] = instr_io_export,
+       [INSTR_HDR_EXTRACT2] = instr_io_export,
+       [INSTR_HDR_EXTRACT3] = instr_io_export,
+       [INSTR_HDR_EXTRACT4] = instr_io_export,
+       [INSTR_HDR_EXTRACT5] = instr_io_export,
+       [INSTR_HDR_EXTRACT6] = instr_io_export,
+       [INSTR_HDR_EXTRACT7] = instr_io_export,
+       [INSTR_HDR_EXTRACT8] = instr_io_export,
+
+       [INSTR_HDR_EXTRACT_M] = instr_io_export,
+
+       [INSTR_HDR_LOOKAHEAD] = instr_io_export,
+
+       [INSTR_HDR_EMIT] = instr_io_export,
+       [INSTR_HDR_EMIT_TX] = instr_io_export,
+       [INSTR_HDR_EMIT2_TX] = instr_io_export,
+       [INSTR_HDR_EMIT3_TX] = instr_io_export,
+       [INSTR_HDR_EMIT4_TX] = instr_io_export,
+       [INSTR_HDR_EMIT5_TX] = instr_io_export,
+       [INSTR_HDR_EMIT6_TX] = instr_io_export,
+       [INSTR_HDR_EMIT7_TX] = instr_io_export,
+       [INSTR_HDR_EMIT8_TX] = instr_io_export,
+
+       [INSTR_HDR_VALIDATE] = instr_hdr_validate_export,
+       [INSTR_HDR_INVALIDATE] = instr_hdr_validate_export,
+
+       [INSTR_MOV] = instr_mov_export,
+       [INSTR_MOV_MH] = instr_mov_export,
+       [INSTR_MOV_HM] = instr_mov_export,
+       [INSTR_MOV_HH] = instr_mov_export,
+       [INSTR_MOV_I] = instr_mov_export,
+
+       [INSTR_DMA_HT]  = instr_dma_ht_export,
+       [INSTR_DMA_HT2] = instr_dma_ht_export,
+       [INSTR_DMA_HT3] = instr_dma_ht_export,
+       [INSTR_DMA_HT4] = instr_dma_ht_export,
+       [INSTR_DMA_HT5] = instr_dma_ht_export,
+       [INSTR_DMA_HT6] = instr_dma_ht_export,
+       [INSTR_DMA_HT7] = instr_dma_ht_export,
+       [INSTR_DMA_HT8] = instr_dma_ht_export,
+
+       [INSTR_ALU_ADD] = instr_alu_export,
+       [INSTR_ALU_ADD_MH] = instr_alu_export,
+       [INSTR_ALU_ADD_HM] = instr_alu_export,
+       [INSTR_ALU_ADD_HH] = instr_alu_export,
+       [INSTR_ALU_ADD_MI] = instr_alu_export,
+       [INSTR_ALU_ADD_HI] = instr_alu_export,
+
+       [INSTR_ALU_SUB] = instr_alu_export,
+       [INSTR_ALU_SUB_MH] = instr_alu_export,
+       [INSTR_ALU_SUB_HM] = instr_alu_export,
+       [INSTR_ALU_SUB_HH] = instr_alu_export,
+       [INSTR_ALU_SUB_MI] = instr_alu_export,
+       [INSTR_ALU_SUB_HI] = instr_alu_export,
+
+       [INSTR_ALU_CKADD_FIELD] = instr_alu_export,
+       [INSTR_ALU_CKADD_STRUCT] = instr_alu_export,
+       [INSTR_ALU_CKADD_STRUCT20] = instr_alu_export,
+       [INSTR_ALU_CKSUB_FIELD] = instr_alu_export,
+
+       [INSTR_ALU_AND] = instr_alu_export,
+       [INSTR_ALU_AND_MH] = instr_alu_export,
+       [INSTR_ALU_AND_HM] = instr_alu_export,
+       [INSTR_ALU_AND_HH] = instr_alu_export,
+       [INSTR_ALU_AND_I] = instr_alu_export,
+
+       [INSTR_ALU_OR] = instr_alu_export,
+       [INSTR_ALU_OR_MH] = instr_alu_export,
+       [INSTR_ALU_OR_HM] = instr_alu_export,
+       [INSTR_ALU_OR_HH] = instr_alu_export,
+       [INSTR_ALU_OR_I] = instr_alu_export,
+
+       [INSTR_ALU_XOR] = instr_alu_export,
+       [INSTR_ALU_XOR_MH] = instr_alu_export,
+       [INSTR_ALU_XOR_HM] = instr_alu_export,
+       [INSTR_ALU_XOR_HH] = instr_alu_export,
+       [INSTR_ALU_XOR_I] = instr_alu_export,
+
+       [INSTR_ALU_SHL] = instr_alu_export,
+       [INSTR_ALU_SHL_MH] = instr_alu_export,
+       [INSTR_ALU_SHL_HM] = instr_alu_export,
+       [INSTR_ALU_SHL_HH] = instr_alu_export,
+       [INSTR_ALU_SHL_MI] = instr_alu_export,
+       [INSTR_ALU_SHL_HI] = instr_alu_export,
+
+       [INSTR_ALU_SHR] = instr_alu_export,
+       [INSTR_ALU_SHR_MH] = instr_alu_export,
+       [INSTR_ALU_SHR_HM] = instr_alu_export,
+       [INSTR_ALU_SHR_HH] = instr_alu_export,
+       [INSTR_ALU_SHR_MI] = instr_alu_export,
+       [INSTR_ALU_SHR_HI] = instr_alu_export,
+
+       [INSTR_REGPREFETCH_RH] = instr_reg_export,
+       [INSTR_REGPREFETCH_RM] = instr_reg_export,
+       [INSTR_REGPREFETCH_RI] = instr_reg_export,
+
+       [INSTR_REGRD_HRH] = instr_reg_export,
+       [INSTR_REGRD_HRM] = instr_reg_export,
+       [INSTR_REGRD_MRH] = instr_reg_export,
+       [INSTR_REGRD_MRM] = instr_reg_export,
+       [INSTR_REGRD_HRI] = instr_reg_export,
+       [INSTR_REGRD_MRI] = instr_reg_export,
+
+       [INSTR_REGWR_RHH] = instr_reg_export,
+       [INSTR_REGWR_RHM] = instr_reg_export,
+       [INSTR_REGWR_RMH] = instr_reg_export,
+       [INSTR_REGWR_RMM] = instr_reg_export,
+       [INSTR_REGWR_RHI] = instr_reg_export,
+       [INSTR_REGWR_RMI] = instr_reg_export,
+       [INSTR_REGWR_RIH] = instr_reg_export,
+       [INSTR_REGWR_RIM] = instr_reg_export,
+       [INSTR_REGWR_RII] = instr_reg_export,
+
+       [INSTR_REGADD_RHH] = instr_reg_export,
+       [INSTR_REGADD_RHM] = instr_reg_export,
+       [INSTR_REGADD_RMH] = instr_reg_export,
+       [INSTR_REGADD_RMM] = instr_reg_export,
+       [INSTR_REGADD_RHI] = instr_reg_export,
+       [INSTR_REGADD_RMI] = instr_reg_export,
+       [INSTR_REGADD_RIH] = instr_reg_export,
+       [INSTR_REGADD_RIM] = instr_reg_export,
+       [INSTR_REGADD_RII] = instr_reg_export,
+
+       [INSTR_METPREFETCH_H] = instr_meter_export,
+       [INSTR_METPREFETCH_M] = instr_meter_export,
+       [INSTR_METPREFETCH_I] = instr_meter_export,
+
+       [INSTR_METER_HHM] = instr_meter_export,
+       [INSTR_METER_HHI] = instr_meter_export,
+       [INSTR_METER_HMM] = instr_meter_export,
+       [INSTR_METER_HMI] = instr_meter_export,
+       [INSTR_METER_MHM] = instr_meter_export,
+       [INSTR_METER_MHI] = instr_meter_export,
+       [INSTR_METER_MMM] = instr_meter_export,
+       [INSTR_METER_MMI] = instr_meter_export,
+       [INSTR_METER_IHM] = instr_meter_export,
+       [INSTR_METER_IHI] = instr_meter_export,
+       [INSTR_METER_IMM] = instr_meter_export,
+       [INSTR_METER_IMI] = instr_meter_export,
+
+       [INSTR_TABLE] = instr_table_export,
+       [INSTR_TABLE_AF] = instr_table_export,
+       [INSTR_SELECTOR] = instr_table_export,
+       [INSTR_LEARNER] = instr_table_export,
+       [INSTR_LEARNER_AF] = instr_table_export,
+
+       [INSTR_LEARNER_LEARN] = instr_learn_export,
+       [INSTR_LEARNER_FORGET] = instr_forget_export,
+
+       [INSTR_EXTERN_OBJ] = instr_extern_export,
+       [INSTR_EXTERN_FUNC] = instr_extern_export,
+
+       [INSTR_JMP] = instr_jmp_export,
+       [INSTR_JMP_VALID] = instr_jmp_export,
+       [INSTR_JMP_INVALID] = instr_jmp_export,
+       [INSTR_JMP_HIT] = instr_jmp_export,
+       [INSTR_JMP_MISS] = instr_jmp_export,
+       [INSTR_JMP_ACTION_HIT] = instr_jmp_export,
+       [INSTR_JMP_ACTION_MISS] = instr_jmp_export,
+
+       [INSTR_JMP_EQ] = instr_jmp_export,
+       [INSTR_JMP_EQ_MH] = instr_jmp_export,
+       [INSTR_JMP_EQ_HM] = instr_jmp_export,
+       [INSTR_JMP_EQ_HH] = instr_jmp_export,
+       [INSTR_JMP_EQ_I] = instr_jmp_export,
+
+       [INSTR_JMP_NEQ] = instr_jmp_export,
+       [INSTR_JMP_NEQ_MH] = instr_jmp_export,
+       [INSTR_JMP_NEQ_HM] = instr_jmp_export,
+       [INSTR_JMP_NEQ_HH] = instr_jmp_export,
+       [INSTR_JMP_NEQ_I] = instr_jmp_export,
+
+       [INSTR_JMP_LT] = instr_jmp_export,
+       [INSTR_JMP_LT_MH] = instr_jmp_export,
+       [INSTR_JMP_LT_HM] = instr_jmp_export,
+       [INSTR_JMP_LT_HH] = instr_jmp_export,
+       [INSTR_JMP_LT_MI] = instr_jmp_export,
+       [INSTR_JMP_LT_HI] = instr_jmp_export,
+
+       [INSTR_JMP_GT] = instr_jmp_export,
+       [INSTR_JMP_GT_MH] = instr_jmp_export,
+       [INSTR_JMP_GT_HM] = instr_jmp_export,
+       [INSTR_JMP_GT_HH] = instr_jmp_export,
+       [INSTR_JMP_GT_MI] = instr_jmp_export,
+       [INSTR_JMP_GT_HI] = instr_jmp_export,
+
+       [INSTR_RETURN] = instr_return_export,
+};
+
+static void
+action_data_codegen(struct action *a, FILE *f)
 {
-       metarray_build_free(p);
+       uint32_t i;
 
-       /* Meter arrays. */
-       for ( ; ; ) {
-               struct metarray *elem;
+       fprintf(f,
+               "static const struct instruction action_%s_instructions[] = {\n",
+               a->name);
 
-               elem = TAILQ_FIRST(&p->metarrays);
-               if (!elem)
-                       break;
+       for (i = 0; i < a->n_instructions; i++) {
+               struct instruction *instr = &a->instructions[i];
+               instruction_export_t func = export_table[instr->type];
 
-               TAILQ_REMOVE(&p->metarrays, elem, node);
-               free(elem);
+               func(instr, f);
        }
 
-       /* Meter profiles. */
-       for ( ; ; ) {
-               struct meter_profile *elem;
-
-               elem = TAILQ_FIRST(&p->meter_profiles);
-               if (!elem)
-                       break;
+       fprintf(f, "};\n");
+}
 
-               TAILQ_REMOVE(&p->meter_profiles, elem, node);
-               free(elem);
+static const char *
+instr_type_to_func(struct instruction *instr)
+{
+       switch (instr->type) {
+       case INSTR_RX: return NULL;
+
+       case INSTR_TX: return "__instr_tx_exec";
+       case INSTR_TX_I: return "__instr_tx_i_exec";
+
+       case INSTR_HDR_EXTRACT: return "__instr_hdr_extract_exec";
+       case INSTR_HDR_EXTRACT2: return "__instr_hdr_extract2_exec";
+       case INSTR_HDR_EXTRACT3: return "__instr_hdr_extract3_exec";
+       case INSTR_HDR_EXTRACT4: return "__instr_hdr_extract4_exec";
+       case INSTR_HDR_EXTRACT5: return "__instr_hdr_extract5_exec";
+       case INSTR_HDR_EXTRACT6: return "__instr_hdr_extract6_exec";
+       case INSTR_HDR_EXTRACT7: return "__instr_hdr_extract7_exec";
+       case INSTR_HDR_EXTRACT8: return "__instr_hdr_extract8_exec";
+
+       case INSTR_HDR_EXTRACT_M: return "__instr_hdr_extract_m_exec";
+
+       case INSTR_HDR_LOOKAHEAD: return "__instr_hdr_lookahead_exec";
+
+       case INSTR_HDR_EMIT: return "__instr_hdr_emit_exec";
+       case INSTR_HDR_EMIT_TX: return "__instr_hdr_emit_tx_exec";
+       case INSTR_HDR_EMIT2_TX: return "__instr_hdr_emit2_tx_exec";
+       case INSTR_HDR_EMIT3_TX: return "__instr_hdr_emit3_tx_exec";
+       case INSTR_HDR_EMIT4_TX: return "__instr_hdr_emit4_tx_exec";
+       case INSTR_HDR_EMIT5_TX: return "__instr_hdr_emit5_tx_exec";
+       case INSTR_HDR_EMIT6_TX: return "__instr_hdr_emit6_tx_exec";
+       case INSTR_HDR_EMIT7_TX: return "__instr_hdr_emit7_tx_exec";
+       case INSTR_HDR_EMIT8_TX: return "__instr_hdr_emit8_tx_exec";
+
+       case INSTR_HDR_VALIDATE: return "__instr_hdr_validate_exec";
+       case INSTR_HDR_INVALIDATE: return "__instr_hdr_invalidate_exec";
+
+       case INSTR_MOV: return "__instr_mov_exec";
+       case INSTR_MOV_MH: return "__instr_mov_mh_exec";
+       case INSTR_MOV_HM: return "__instr_mov_hm_exec";
+       case INSTR_MOV_HH: return "__instr_mov_hh_exec";
+       case INSTR_MOV_I: return "__instr_mov_i_exec";
+
+       case INSTR_DMA_HT: return "__instr_dma_ht_exec";
+       case INSTR_DMA_HT2: return "__instr_dma_ht2_exec";
+       case INSTR_DMA_HT3: return "__instr_dma_ht3_exec";
+       case INSTR_DMA_HT4: return "__instr_dma_ht4_exec";
+       case INSTR_DMA_HT5: return "__instr_dma_ht5_exec";
+       case INSTR_DMA_HT6: return "__instr_dma_ht6_exec";
+       case INSTR_DMA_HT7: return "__instr_dma_ht7_exec";
+       case INSTR_DMA_HT8: return "__instr_dma_ht8_exec";
+
+       case INSTR_ALU_ADD: return "__instr_alu_add_exec";
+       case INSTR_ALU_ADD_MH: return "__instr_alu_add_mh_exec";
+       case INSTR_ALU_ADD_HM: return "__instr_alu_add_hm_exec";
+       case INSTR_ALU_ADD_HH: return "__instr_alu_add_hh_exec";
+       case INSTR_ALU_ADD_MI: return "__instr_alu_add_mi_exec";
+       case INSTR_ALU_ADD_HI: return "__instr_alu_add_hi_exec";
+
+       case INSTR_ALU_SUB: return "__instr_alu_sub_exec";
+       case INSTR_ALU_SUB_MH: return "__instr_alu_sub_mh_exec";
+       case INSTR_ALU_SUB_HM: return "__instr_alu_sub_hm_exec";
+       case INSTR_ALU_SUB_HH: return "__instr_alu_sub_hh_exec";
+       case INSTR_ALU_SUB_MI: return "__instr_alu_sub_mi_exec";
+       case INSTR_ALU_SUB_HI: return "__instr_alu_sub_hi_exec";
+
+       case INSTR_ALU_CKADD_FIELD: return "__instr_alu_ckadd_field_exec";
+       case INSTR_ALU_CKADD_STRUCT20: return "__instr_alu_ckadd_struct20_exec";
+       case INSTR_ALU_CKADD_STRUCT: return "__instr_alu_ckadd_struct_exec";
+       case INSTR_ALU_CKSUB_FIELD: return "__instr_alu_cksub_field_exec";
+
+       case INSTR_ALU_AND: return "__instr_alu_and_exec";
+       case INSTR_ALU_AND_MH: return "__instr_alu_and_mh_exec";
+       case INSTR_ALU_AND_HM: return "__instr_alu_and_hm_exec";
+       case INSTR_ALU_AND_HH: return "__instr_alu_and_hh_exec";
+       case INSTR_ALU_AND_I: return "__instr_alu_and_i_exec";
+
+       case INSTR_ALU_OR: return "__instr_alu_or_exec";
+       case INSTR_ALU_OR_MH: return "__instr_alu_or_mh_exec";
+       case INSTR_ALU_OR_HM: return "__instr_alu_or_hm_exec";
+       case INSTR_ALU_OR_HH: return "__instr_alu_or_hh_exec";
+       case INSTR_ALU_OR_I: return "__instr_alu_or_i_exec";
+
+       case INSTR_ALU_XOR: return "__instr_alu_xor_exec";
+       case INSTR_ALU_XOR_MH: return "__instr_alu_xor_mh_exec";
+       case INSTR_ALU_XOR_HM: return "__instr_alu_xor_hm_exec";
+       case INSTR_ALU_XOR_HH: return "__instr_alu_xor_hh_exec";
+       case INSTR_ALU_XOR_I: return "__instr_alu_xor_i_exec";
+
+       case INSTR_ALU_SHL: return "__instr_alu_shl_exec";
+       case INSTR_ALU_SHL_MH: return "__instr_alu_shl_mh_exec";
+       case INSTR_ALU_SHL_HM: return "__instr_alu_shl_hm_exec";
+       case INSTR_ALU_SHL_HH: return "__instr_alu_shl_hh_exec";
+       case INSTR_ALU_SHL_MI: return "__instr_alu_shl_mi_exec";
+       case INSTR_ALU_SHL_HI: return "__instr_alu_shl_hi_exec";
+
+       case INSTR_ALU_SHR: return "__instr_alu_shr_exec";
+       case INSTR_ALU_SHR_MH: return "__instr_alu_shr_mh_exec";
+       case INSTR_ALU_SHR_HM: return "__instr_alu_shr_hm_exec";
+       case INSTR_ALU_SHR_HH: return "__instr_alu_shr_hh_exec";
+       case INSTR_ALU_SHR_MI: return "__instr_alu_shr_mi_exec";
+       case INSTR_ALU_SHR_HI: return "__instr_alu_shr_hi_exec";
+
+       case INSTR_REGPREFETCH_RH: return "__instr_regprefetch_rh_exec";
+       case INSTR_REGPREFETCH_RM: return "__instr_regprefetch_rm_exec";
+       case INSTR_REGPREFETCH_RI: return "__instr_regprefetch_ri_exec";
+
+       case INSTR_REGRD_HRH: return "__instr_regrd_hrh_exec";
+       case INSTR_REGRD_HRM: return "__instr_regrd_hrm_exec";
+       case INSTR_REGRD_HRI: return "__instr_regrd_hri_exec";
+       case INSTR_REGRD_MRH: return "__instr_regrd_mrh_exec";
+       case INSTR_REGRD_MRM: return "__instr_regrd_mrm_exec";
+       case INSTR_REGRD_MRI: return "__instr_regrd_mri_exec";
+
+       case INSTR_REGWR_RHH: return "__instr_regwr_rhh_exec";
+       case INSTR_REGWR_RHM: return "__instr_regwr_rhm_exec";
+       case INSTR_REGWR_RHI: return "__instr_regwr_rhi_exec";
+       case INSTR_REGWR_RMH: return "__instr_regwr_rmh_exec";
+       case INSTR_REGWR_RMM: return "__instr_regwr_rmm_exec";
+       case INSTR_REGWR_RMI: return "__instr_regwr_rmi_exec";
+       case INSTR_REGWR_RIH: return "__instr_regwr_rih_exec";
+       case INSTR_REGWR_RIM: return "__instr_regwr_rim_exec";
+       case INSTR_REGWR_RII: return "__instr_regwr_rii_exec";
+
+       case INSTR_REGADD_RHH: return "__instr_regadd_rhh_exec";
+       case INSTR_REGADD_RHM: return "__instr_regadd_rhm_exec";
+       case INSTR_REGADD_RHI: return "__instr_regadd_rhi_exec";
+       case INSTR_REGADD_RMH: return "__instr_regadd_rmh_exec";
+       case INSTR_REGADD_RMM: return "__instr_regadd_rmm_exec";
+       case INSTR_REGADD_RMI: return "__instr_regadd_rmi_exec";
+       case INSTR_REGADD_RIH: return "__instr_regadd_rih_exec";
+       case INSTR_REGADD_RIM: return "__instr_regadd_rim_exec";
+       case INSTR_REGADD_RII: return "__instr_regadd_rii_exec";
+
+       case INSTR_METPREFETCH_H: return "__instr_metprefetch_h_exec";
+       case INSTR_METPREFETCH_M: return "__instr_metprefetch_m_exec";
+       case INSTR_METPREFETCH_I: return "__instr_metprefetch_i_exec";
+
+       case INSTR_METER_HHM: return "__instr_meter_hhm_exec";
+       case INSTR_METER_HHI: return "__instr_meter_hhi_exec";
+       case INSTR_METER_HMM: return "__instr_meter_hmm_exec";
+       case INSTR_METER_HMI: return "__instr_meter_hmi_exec";
+       case INSTR_METER_MHM: return "__instr_meter_mhm_exec";
+       case INSTR_METER_MHI: return "__instr_meter_mhi_exec";
+       case INSTR_METER_MMM: return "__instr_meter_mmm_exec";
+       case INSTR_METER_MMI: return "__instr_meter_mmi_exec";
+       case INSTR_METER_IHM: return "__instr_meter_ihm_exec";
+       case INSTR_METER_IHI: return "__instr_meter_ihi_exec";
+       case INSTR_METER_IMM: return "__instr_meter_imm_exec";
+       case INSTR_METER_IMI: return "__instr_meter_imi_exec";
+
+       case INSTR_TABLE: return NULL;
+       case INSTR_TABLE_AF: return NULL;
+       case INSTR_SELECTOR: return NULL;
+       case INSTR_LEARNER: return NULL;
+       case INSTR_LEARNER_AF: return NULL;
+
+       case INSTR_LEARNER_LEARN: return "__instr_learn_exec";
+       case INSTR_LEARNER_FORGET: return "__instr_forget_exec";
+
+       case INSTR_EXTERN_OBJ: return NULL;
+       case INSTR_EXTERN_FUNC: return NULL;
+
+       case INSTR_JMP: return NULL;
+       case INSTR_JMP_VALID: return NULL;
+       case INSTR_JMP_INVALID: return NULL;
+       case INSTR_JMP_HIT: return NULL;
+       case INSTR_JMP_MISS: return NULL;
+       case INSTR_JMP_ACTION_HIT: return NULL;
+       case INSTR_JMP_ACTION_MISS: return NULL;
+       case INSTR_JMP_EQ: return NULL;
+       case INSTR_JMP_EQ_MH: return NULL;
+       case INSTR_JMP_EQ_HM: return NULL;
+       case INSTR_JMP_EQ_HH: return NULL;
+       case INSTR_JMP_EQ_I: return NULL;
+       case INSTR_JMP_NEQ: return NULL;
+       case INSTR_JMP_NEQ_MH: return NULL;
+       case INSTR_JMP_NEQ_HM: return NULL;
+       case INSTR_JMP_NEQ_HH: return NULL;
+       case INSTR_JMP_NEQ_I: return NULL;
+       case INSTR_JMP_LT: return NULL;
+       case INSTR_JMP_LT_MH: return NULL;
+       case INSTR_JMP_LT_HM: return NULL;
+       case INSTR_JMP_LT_HH: return NULL;
+       case INSTR_JMP_LT_MI: return NULL;
+       case INSTR_JMP_LT_HI: return NULL;
+       case INSTR_JMP_GT: return NULL;
+       case INSTR_JMP_GT_MH: return NULL;
+       case INSTR_JMP_GT_HM: return NULL;
+       case INSTR_JMP_GT_HH: return NULL;
+       case INSTR_JMP_GT_MI: return NULL;
+       case INSTR_JMP_GT_HI: return NULL;
+
+       case INSTR_RETURN: return NULL;
+
+       default: return NULL;
        }
 }
 
-/*
- * Pipeline.
- */
-int
-rte_swx_pipeline_config(struct rte_swx_pipeline **p, int numa_node)
+static void
+action_instr_does_tx_codegen(struct action *a,
+                       uint32_t instr_pos,
+                       struct instruction *instr,
+                       FILE *f)
 {
-       struct rte_swx_pipeline *pipeline;
+       fprintf(f,
+               "%s(p, t, &action_%s_instructions[%u]);\n"
+               "\tthread_ip_reset(p, t);\n"
+               "\tinstr_rx_exec(p);\n"
+               "\treturn;\n",
+               instr_type_to_func(instr),
+               a->name,
+               instr_pos);
+}
 
-       /* Check input parameters. */
-       CHECK(p, EINVAL);
+static void
+action_instr_extern_obj_codegen(struct action *a,
+                               uint32_t instr_pos,
+                               FILE *f)
+{
+       fprintf(f,
+               "while (!__instr_extern_obj_exec(p, t, &action_%s_instructions[%u]));\n",
+               a->name,
+               instr_pos);
+}
 
-       /* Memory allocation. */
-       pipeline = calloc(1, sizeof(struct rte_swx_pipeline));
-       CHECK(pipeline, ENOMEM);
+static void
+action_instr_extern_func_codegen(struct action *a,
+                                uint32_t instr_pos,
+                                FILE *f)
+{
+       fprintf(f,
+               "while (!__instr_extern_func_exec(p, t, &action_%s_instructions[%u]));\n",
+               a->name,
+               instr_pos);
+}
 
-       /* Initialization. */
-       TAILQ_INIT(&pipeline->struct_types);
-       TAILQ_INIT(&pipeline->port_in_types);
-       TAILQ_INIT(&pipeline->ports_in);
-       TAILQ_INIT(&pipeline->port_out_types);
-       TAILQ_INIT(&pipeline->ports_out);
-       TAILQ_INIT(&pipeline->extern_types);
-       TAILQ_INIT(&pipeline->extern_objs);
-       TAILQ_INIT(&pipeline->extern_funcs);
-       TAILQ_INIT(&pipeline->headers);
-       TAILQ_INIT(&pipeline->actions);
-       TAILQ_INIT(&pipeline->table_types);
-       TAILQ_INIT(&pipeline->tables);
-       TAILQ_INIT(&pipeline->selectors);
-       TAILQ_INIT(&pipeline->regarrays);
-       TAILQ_INIT(&pipeline->meter_profiles);
-       TAILQ_INIT(&pipeline->metarrays);
+static void
+action_instr_jmp_codegen(struct action *a,
+                        uint32_t instr_pos,
+                        struct instruction *instr,
+                        struct instruction_data *data,
+                        FILE *f)
+{
+       switch (instr->type) {
+       case INSTR_JMP:
+               fprintf(f,
+                       "goto %s;\n",
+                       data->jmp_label);
+               return;
 
-       pipeline->n_structs = 1; /* Struct 0 is reserved for action_data. */
-       pipeline->numa_node = numa_node;
+       case INSTR_JMP_VALID:
+               fprintf(f,
+                       "if (HEADER_VALID(t, action_%s_instructions[%u].jmp.header_id))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       *p = pipeline;
-       return 0;
-}
+       case INSTR_JMP_INVALID:
+               fprintf(f,
+                       "if (!HEADER_VALID(t, action_%s_instructions[%u].jmp.header_id))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-void
-rte_swx_pipeline_free(struct rte_swx_pipeline *p)
-{
-       if (!p)
+       case INSTR_JMP_HIT:
+               fprintf(f,
+                       "if (t->hit)\n"
+                       "\t\tgoto %s;\n",
+                       data->jmp_label);
+               return;
+
+       case INSTR_JMP_MISS:
+               fprintf(f,
+                       "if (!t->hit)\n"
+                       "\t\tgoto %s;\n",
+                       data->jmp_label);
                return;
 
-       free(p->instructions);
-
-       metarray_free(p);
-       regarray_free(p);
-       table_state_free(p);
-       selector_free(p);
-       table_free(p);
-       action_free(p);
-       metadata_free(p);
-       header_free(p);
-       extern_func_free(p);
-       extern_obj_free(p);
-       port_out_free(p);
-       port_in_free(p);
-       struct_free(p);
+       case INSTR_JMP_ACTION_HIT:
+               fprintf(f,
+                       "if (t->action_id == action_%s_instructions[%u].jmp.action_id)\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       free(p);
-}
+       case INSTR_JMP_ACTION_MISS:
+               fprintf(f,
+                       "if (t->action_id != action_%s_instructions[%u].jmp.action_id)\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-int
-rte_swx_pipeline_instructions_config(struct rte_swx_pipeline *p,
-                                    const char **instructions,
-                                    uint32_t n_instructions)
-{
-       int err;
-       uint32_t i;
+       case INSTR_JMP_EQ:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) == "
+                       "instr_operand_hbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       err = instruction_config(p, NULL, instructions, n_instructions);
-       if (err)
-               return err;
+       case INSTR_JMP_EQ_MH:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) == "
+                       "instr_operand_nbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       /* Thread instruction pointer reset. */
-       for (i = 0; i < RTE_SWX_PIPELINE_THREADS_MAX; i++) {
-               struct thread *t = &p->threads[i];
+       case INSTR_JMP_EQ_HM:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) == "
+                       "instr_operand_hbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-               thread_ip_reset(p, t);
-       }
+       case INSTR_JMP_EQ_HH:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) == "
+                       "instr_operand_nbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       return 0;
-}
+       case INSTR_JMP_EQ_I:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) == "
+                       "action_%s_instructions[%u].jmp.b_val)\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-int
-rte_swx_pipeline_build(struct rte_swx_pipeline *p)
-{
-       int status;
+       case INSTR_JMP_NEQ:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) != "
+                       "instr_operand_hbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       CHECK(p, EINVAL);
-       CHECK(p->build_done == 0, EEXIST);
+       case INSTR_JMP_NEQ_MH:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) != "
+                       "instr_operand_nbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = port_in_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_NEQ_HM:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) != "
+                       "instr_operand_hbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = port_out_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_NEQ_HH:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) != "
+                       "instr_operand_nbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = struct_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_NEQ_I:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) != "
+                       "action_%s_instructions[%u].jmp.b_val)\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = extern_obj_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_LT:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) < "
+                       "instr_operand_hbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = extern_func_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_LT_MH:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) < "
+                       "instr_operand_nbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = header_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_LT_HM:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) < "
+                       "instr_operand_hbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = metadata_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_LT_HH:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) < "
+                       "instr_operand_nbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = action_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_LT_MI:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) < "
+                       "action_%s_instructions[%u].jmp.b_val)\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = table_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_LT_HI:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) < "
+                       "action_%s_instructions[%u].jmp.b_val)\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = selector_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_GT:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) > "
+                       "instr_operand_hbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = table_state_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_GT_MH:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) > "
+                       "instr_operand_nbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = regarray_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_GT_HM:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) > "
+                       "instr_operand_hbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       status = metarray_build(p);
-       if (status)
-               goto error;
+       case INSTR_JMP_GT_HH:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) > "
+                       "instr_operand_nbo(t, &action_%s_instructions[%u].jmp.b))\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       p->build_done = 1;
-       return 0;
+       case INSTR_JMP_GT_MI:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &action_%s_instructions[%u].jmp.a) > "
+                       "action_%s_instructions[%u].jmp.b_val)\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-error:
-       metarray_build_free(p);
-       regarray_build_free(p);
-       table_state_build_free(p);
-       selector_build_free(p);
-       table_build_free(p);
-       action_build_free(p);
-       metadata_build_free(p);
-       header_build_free(p);
-       extern_func_build_free(p);
-       extern_obj_build_free(p);
-       port_out_build_free(p);
-       port_in_build_free(p);
-       struct_build_free(p);
+       case INSTR_JMP_GT_HI:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &action_%s_instructions[%u].jmp.a) > "
+                       "action_%s_instructions[%u].jmp.b_val)\n"
+                       "\t\tgoto %s;\n",
+                       a->name,
+                       instr_pos,
+                       a->name,
+                       instr_pos,
+                       data->jmp_label);
+               return;
 
-       return status;
+       default:
+               return;
+       }
 }
 
-void
-rte_swx_pipeline_run(struct rte_swx_pipeline *p, uint32_t n_instructions)
+static void
+action_instr_return_codegen(FILE *f)
 {
-       uint32_t i;
-
-       for (i = 0; i < n_instructions; i++)
-               instr_exec(p);
+       fprintf(f,
+               "return;\n");
 }
 
-void
-rte_swx_pipeline_flush(struct rte_swx_pipeline *p)
+static void
+action_instr_codegen(struct action *a, FILE *f)
 {
        uint32_t i;
 
-       for (i = 0; i < p->n_ports_out; i++) {
-               struct port_out_runtime *port = &p->out[i];
+       fprintf(f,
+               "void\n"
+               "action_%s_run(struct rte_swx_pipeline *p)\n"
+               "{\n"
+               "\tstruct thread *t = &p->threads[p->thread_id];\n"
+               "\n",
+               a->name);
+
+       for (i = 0; i < a->n_instructions; i++) {
+               struct instruction *instr = &a->instructions[i];
+               struct instruction_data *data = &a->instruction_data[i];
+
+               /* Label, if present. */
+               if (data->label[0])
+                       fprintf(f, "\n%s : ", data->label);
+               else
+                       fprintf(f, "\n\t");
+
+               /* TX instruction type. */
+               if (instruction_does_tx(instr)) {
+                       action_instr_does_tx_codegen(a, i, instr, f);
+                       continue;
+               }
 
-               if (port->flush)
-                       port->flush(port->obj);
+               /* Extern object/function instruction type. */
+               if (instr->type == INSTR_EXTERN_OBJ) {
+                       action_instr_extern_obj_codegen(a, i, f);
+                       continue;
+               }
+
+               if (instr->type == INSTR_EXTERN_FUNC) {
+                       action_instr_extern_func_codegen(a, i, f);
+                       continue;
+               }
+
+               /* Jump instruction type. */
+               if (instruction_is_jmp(instr)) {
+                       action_instr_jmp_codegen(a, i, instr, data, f);
+                       continue;
+               }
+
+               /* Return instruction type. */
+               if (instr->type == INSTR_RETURN) {
+                       action_instr_return_codegen(f);
+                       continue;
+               }
+
+               /* Any other instruction type. */
+               fprintf(f,
+                       "%s(p, t, &action_%s_instructions[%u]);\n",
+                       instr_type_to_func(instr),
+                       a->name,
+                       i);
        }
+
+       fprintf(f, "}\n\n");
 }
 
-/*
- * Control.
- */
-int
-rte_swx_ctl_pipeline_info_get(struct rte_swx_pipeline *p,
-                             struct rte_swx_ctl_pipeline_info *pipeline)
-{
-       struct action *action;
-       struct table *table;
-       uint32_t n_actions = 0, n_tables = 0;
+struct instruction_group {
+       TAILQ_ENTRY(instruction_group) node;
 
-       if (!p || !pipeline)
-               return -EINVAL;
+       uint32_t group_id;
 
-       TAILQ_FOREACH(action, &p->actions, node)
-               n_actions++;
+       uint32_t first_instr_id;
 
-       TAILQ_FOREACH(table, &p->tables, node)
-               n_tables++;
+       uint32_t last_instr_id;
 
-       pipeline->n_ports_in = p->n_ports_in;
-       pipeline->n_ports_out = p->n_ports_out;
-       pipeline->n_actions = n_actions;
-       pipeline->n_tables = n_tables;
-       pipeline->n_selectors = p->n_selectors;
-       pipeline->n_regarrays = p->n_regarrays;
-       pipeline->n_metarrays = p->n_metarrays;
+       instr_exec_t func;
+};
 
-       return 0;
-}
+TAILQ_HEAD(instruction_group_list, instruction_group);
 
-int
-rte_swx_ctl_pipeline_numa_node_get(struct rte_swx_pipeline *p, int *numa_node)
+static struct instruction_group *
+instruction_group_list_group_find(struct instruction_group_list *igl, uint32_t instruction_id)
 {
-       if (!p || !numa_node)
-               return -EINVAL;
+       struct instruction_group *g;
 
-       *numa_node = p->numa_node;
-       return 0;
+       TAILQ_FOREACH(g, igl, node)
+               if ((g->first_instr_id <= instruction_id) && (instruction_id <= g->last_instr_id))
+                       return g;
+
+       return NULL;
 }
 
-int
-rte_swx_ctl_action_info_get(struct rte_swx_pipeline *p,
-                           uint32_t action_id,
-                           struct rte_swx_ctl_action_info *action)
+static void
+instruction_group_list_free(struct instruction_group_list *igl)
 {
-       struct action *a = NULL;
+       if (!igl)
+               return;
 
-       if (!p || (action_id >= p->n_actions) || !action)
-               return -EINVAL;
+       for ( ; ; ) {
+               struct instruction_group *g;
 
-       a = action_find_by_id(p, action_id);
-       if (!a)
-               return -EINVAL;
+               g = TAILQ_FIRST(igl);
+               if (!g)
+                       break;
 
-       strcpy(action->name, a->name);
-       action->n_args = a->st ? a->st->n_fields : 0;
-       return 0;
+               TAILQ_REMOVE(igl, g, node);
+               free(g);
+       }
+
+       free(igl);
 }
 
-int
-rte_swx_ctl_action_arg_info_get(struct rte_swx_pipeline *p,
-                               uint32_t action_id,
-                               uint32_t action_arg_id,
-                               struct rte_swx_ctl_action_arg_info *action_arg)
+static struct instruction_group_list *
+instruction_group_list_create(struct rte_swx_pipeline *p)
 {
-       struct action *a = NULL;
-       struct field *arg = NULL;
+       struct instruction_group_list *igl = NULL;
+       struct instruction_group *g = NULL;
+       uint32_t n_groups = 0, i;
 
-       if (!p || (action_id >= p->n_actions) || !action_arg)
-               return -EINVAL;
+       if (!p || !p->instructions || !p->instruction_data || !p->n_instructions)
+               goto error;
 
-       a = action_find_by_id(p, action_id);
-       if (!a || !a->st || (action_arg_id >= a->st->n_fields))
-               return -EINVAL;
+       /* List init. */
+       igl = calloc(1, sizeof(struct instruction_group_list));
+       if (!igl)
+               goto error;
 
-       arg = &a->st->fields[action_arg_id];
-       strcpy(action_arg->name, arg->name);
-       action_arg->n_bits = arg->n_bits;
-       action_arg->is_network_byte_order = a->args_endianness[action_arg_id];
+       TAILQ_INIT(igl);
 
-       return 0;
-}
+       /* Allocate the first group. */
+       g = calloc(1, sizeof(struct instruction_group));
+       if (!g)
+               goto error;
+
+       /* Iteration 1: Separate the instructions into groups based on the thread yield
+        * instructions. Do not worry about the jump instructions at this point.
+        */
+       for (i = 0; i < p->n_instructions; i++) {
+               struct instruction *instr = &p->instructions[i];
+
+               /* Check for thread yield instructions. */
+               if (!instruction_does_thread_yield(instr))
+                       continue;
+
+               /* If the current group contains at least one instruction, then finalize it (with
+                * the previous instruction), add it to the list and allocate a new group (that
+                * starts with the current instruction).
+                */
+               if (i - g->first_instr_id) {
+                       /* Finalize the group. */
+                       g->last_instr_id = i - 1;
+
+                       /* Add the group to the list. Advance the number of groups. */
+                       TAILQ_INSERT_TAIL(igl, g, node);
+                       n_groups++;
+
+                       /* Allocate a new group. */
+                       g = calloc(1, sizeof(struct instruction_group));
+                       if (!g)
+                               goto error;
+
+                       /* Initialize the new group. */
+                       g->group_id = n_groups;
+                       g->first_instr_id = i;
+               }
 
-int
-rte_swx_ctl_table_info_get(struct rte_swx_pipeline *p,
-                          uint32_t table_id,
-                          struct rte_swx_ctl_table_info *table)
-{
-       struct table *t = NULL;
+               /* Finalize the current group (with the current instruction, therefore this group
+                * contains just the current thread yield instruction), add it to the list and
+                * allocate a new group (that starts with the next instruction).
+                */
 
-       if (!p || !table)
-               return -EINVAL;
+               /* Finalize the group. */
+               g->last_instr_id = i;
 
-       t = table_find_by_id(p, table_id);
-       if (!t)
-               return -EINVAL;
+               /* Add the group to the list. Advance the number of groups. */
+               TAILQ_INSERT_TAIL(igl, g, node);
+               n_groups++;
 
-       strcpy(table->name, t->name);
-       strcpy(table->args, t->args);
-       table->n_match_fields = t->n_fields;
-       table->n_actions = t->n_actions;
-       table->default_action_is_const = t->default_action_is_const;
-       table->size = t->size;
-       return 0;
-}
+               /* Allocate a new group. */
+               g = calloc(1, sizeof(struct instruction_group));
+               if (!g)
+                       goto error;
 
-int
-rte_swx_ctl_table_match_field_info_get(struct rte_swx_pipeline *p,
-       uint32_t table_id,
-       uint32_t match_field_id,
-       struct rte_swx_ctl_table_match_field_info *match_field)
-{
-       struct table *t;
-       struct match_field *f;
+               /* Initialize the new group. */
+               g->group_id = n_groups;
+               g->first_instr_id = i + 1;
+       }
 
-       if (!p || (table_id >= p->n_tables) || !match_field)
-               return -EINVAL;
+       /* Handle the last group. */
+       if (i - g->first_instr_id) {
+               /* Finalize the group. */
+               g->last_instr_id = i - 1;
 
-       t = table_find_by_id(p, table_id);
-       if (!t || (match_field_id >= t->n_fields))
-               return -EINVAL;
+               /* Add the group to the list. Advance the number of groups. */
+               TAILQ_INSERT_TAIL(igl, g, node);
+               n_groups++;
+       } else
+               free(g);
 
-       f = &t->fields[match_field_id];
-       match_field->match_type = f->match_type;
-       match_field->is_header = t->header ? 1 : 0;
-       match_field->n_bits = f->field->n_bits;
-       match_field->offset = f->field->offset;
+       g = NULL;
 
-       return 0;
-}
+       /* Iteration 2: Handle jumps. If the current group contains an instruction which represents
+        * the destination of a jump instruction located in a different group ("far jump"), then the
+        * current group has to be split, so that the instruction representing the far jump
+        * destination is at the start of its group.
+        */
+       for ( ; ; ) {
+               int is_modified = 0;
 
-int
-rte_swx_ctl_table_action_info_get(struct rte_swx_pipeline *p,
-       uint32_t table_id,
-       uint32_t table_action_id,
-       struct rte_swx_ctl_table_action_info *table_action)
-{
-       struct table *t;
+               for (i = 0; i < p->n_instructions; i++) {
+                       struct instruction_data *data = &p->instruction_data[i];
+                       struct instruction_group *g;
+                       uint32_t j;
 
-       if (!p || (table_id >= p->n_tables) || !table_action)
-               return -EINVAL;
+                       /* Continue when the current instruction is not a jump destination. */
+                       if (!data->n_users)
+                               continue;
 
-       t = table_find_by_id(p, table_id);
-       if (!t || (table_action_id >= t->n_actions))
-               return -EINVAL;
+                       g = instruction_group_list_group_find(igl, i);
+                       if (!g)
+                               goto error;
+
+                       /* Find out all the jump instructions with this destination. */
+                       for (j = 0; j < p->n_instructions; j++) {
+                               struct instruction *jmp_instr = &p->instructions[j];
+                               struct instruction_data *jmp_data = &p->instruction_data[j];
+                               struct instruction_group *jmp_g, *new_g;
+
+                               /* Continue when not a jump instruction. Even when jump instruction,
+                                * continue when the jump destination is not this instruction.
+                                */
+                               if (!instruction_is_jmp(jmp_instr) ||
+                                   strcmp(jmp_data->jmp_label, data->label))
+                                       continue;
+
+                               jmp_g = instruction_group_list_group_find(igl, j);
+                               if (!jmp_g)
+                                       goto error;
 
-       table_action->action_id = t->actions[table_action_id]->id;
+                               /* Continue when both the jump instruction and the jump destination
+                                * instruction are in the same group. Even when in different groups,
+                                * still continue if the jump destination instruction is already the
+                                * first instruction of its group.
+                                */
+                               if ((jmp_g->group_id == g->group_id) || (g->first_instr_id == i))
+                                       continue;
+
+                               /* Split the group of the current jump destination instruction to
+                                * make this instruction the first instruction of a new group.
+                                */
+                               new_g = calloc(1, sizeof(struct instruction_group));
+                               if (!new_g)
+                                       goto error;
 
-       return 0;
-}
+                               new_g->group_id = n_groups;
+                               new_g->first_instr_id = i;
+                               new_g->last_instr_id = g->last_instr_id;
 
-int
-rte_swx_ctl_table_ops_get(struct rte_swx_pipeline *p,
-                         uint32_t table_id,
-                         struct rte_swx_table_ops *table_ops,
-                         int *is_stub)
-{
-       struct table *t;
+                               g->last_instr_id = i - 1;
 
-       if (!p || (table_id >= p->n_tables))
-               return -EINVAL;
+                               TAILQ_INSERT_AFTER(igl, g, new_g, node);
+                               n_groups++;
+                               is_modified = 1;
 
-       t = table_find_by_id(p, table_id);
-       if (!t)
-               return -EINVAL;
+                               /* The decision to split this group (to make the current instruction
+                                * the first instruction of a new group) is already taken and fully
+                                * implemented, so no need to search for more reasons to do it.
+                                */
+                               break;
+                       }
+               }
 
-       if (t->type) {
-               if (table_ops)
-                       memcpy(table_ops, &t->type->ops, sizeof(*table_ops));
-               *is_stub = 0;
-       } else {
-               *is_stub = 1;
+               /* Re-evaluate everything, as at least one group got split, so some jumps that were
+                * previously considered local (i.e. the jump destination is in the same group as
+                * the jump instruction) can now be "far jumps" (i.e. the jump destination is in a
+                * different group than the jump instruction). Wost case scenario: each instruction
+                * that is a jump destination ends up as the first instruction of its group.
+                */
+               if (!is_modified)
+                       break;
        }
 
-       return 0;
-}
-
-int
-rte_swx_ctl_selector_info_get(struct rte_swx_pipeline *p,
-                             uint32_t selector_id,
-                             struct rte_swx_ctl_selector_info *selector)
-{
-       struct selector *s = NULL;
+       /* Re-assign the group IDs to be in incremental order. */
+       i = 0;
+       TAILQ_FOREACH(g, igl, node) {
+               g->group_id = i;
 
-       if (!p || !selector)
-               return -EINVAL;
+               i++;
+       }
 
-       s = selector_find_by_id(p, selector_id);
-       if (!s)
-               return -EINVAL;
+       return igl;
 
-       strcpy(selector->name, s->name);
+error:
+       instruction_group_list_free(igl);
 
-       selector->n_selector_fields = s->n_selector_fields;
-       selector->n_groups_max = s->n_groups_max;
-       selector->n_members_per_group_max = s->n_members_per_group_max;
+       free(g);
 
-       return 0;
+       return NULL;
 }
 
-int
-rte_swx_ctl_selector_group_id_field_info_get(struct rte_swx_pipeline *p,
-        uint32_t selector_id,
-        struct rte_swx_ctl_table_match_field_info *field)
+static void
+pipeline_instr_does_tx_codegen(struct rte_swx_pipeline *p __rte_unused,
+                              uint32_t instr_pos,
+                              struct instruction *instr,
+                              FILE *f)
 {
-       struct selector *s;
+       fprintf(f,
+               "%s(p, t, &pipeline_instructions[%u]);\n"
+               "\tthread_ip_reset(p, t);\n"
+               "\tinstr_rx_exec(p);\n"
+               "\treturn;\n",
+               instr_type_to_func(instr),
+               instr_pos);
+}
 
-       if (!p || (selector_id >= p->n_selectors) || !field)
-               return -EINVAL;
+static int
+pipeline_instr_jmp_codegen(struct rte_swx_pipeline *p,
+                          struct instruction_group_list *igl,
+                          uint32_t jmp_instr_id,
+                          struct instruction *jmp_instr,
+                          struct instruction_data *jmp_data,
+                          FILE *f)
+{
+       struct instruction_group *jmp_g, *g;
+       struct instruction_data *data;
+       uint32_t instr_id;
+
+       switch (jmp_instr->type) {
+       case INSTR_JMP:
+               break;
 
-       s = selector_find_by_id(p, selector_id);
-       if (!s)
-               return -EINVAL;
+       case INSTR_JMP_VALID:
+               fprintf(f,
+                       "if (HEADER_VALID(t, pipeline_instructions[%u].jmp.header_id))",
+                       jmp_instr_id);
+               break;
 
-       field->match_type = RTE_SWX_TABLE_MATCH_EXACT;
-       field->is_header = 0;
-       field->n_bits = s->group_id_field->n_bits;
-       field->offset = s->group_id_field->offset;
+       case INSTR_JMP_INVALID:
+               fprintf(f,
+                       "if (!HEADER_VALID(t, pipeline_instructions[%u].jmp.header_id))",
+                       jmp_instr_id);
+               break;
 
-       return 0;
-}
+       case INSTR_JMP_HIT:
+               fprintf(f,
+                       "if (t->hit)\n");
+               break;
 
-int
-rte_swx_ctl_selector_field_info_get(struct rte_swx_pipeline *p,
-        uint32_t selector_id,
-        uint32_t selector_field_id,
-        struct rte_swx_ctl_table_match_field_info *field)
-{
-       struct selector *s;
-       struct field *f;
+       case INSTR_JMP_MISS:
+               fprintf(f,
+                       "if (!t->hit)\n");
+               break;
 
-       if (!p || (selector_id >= p->n_selectors) || !field)
-               return -EINVAL;
+       case INSTR_JMP_ACTION_HIT:
+               fprintf(f,
+                       "if (t->action_id == pipeline_instructions[%u].jmp.action_id)",
+                       jmp_instr_id);
+               break;
 
-       s = selector_find_by_id(p, selector_id);
-       if (!s || (selector_field_id >= s->n_selector_fields))
-               return -EINVAL;
+       case INSTR_JMP_ACTION_MISS:
+               fprintf(f,
+                       "if (t->action_id != pipeline_instructions[%u].jmp.action_id)",
+                       jmp_instr_id);
+               break;
 
-       f = s->selector_fields[selector_field_id];
-       field->match_type = RTE_SWX_TABLE_MATCH_EXACT;
-       field->is_header = s->selector_header ? 1 : 0;
-       field->n_bits = f->n_bits;
-       field->offset = f->offset;
+       case INSTR_JMP_EQ:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) == "
+                       "instr_operand_hbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       return 0;
-}
+       case INSTR_JMP_EQ_MH:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) == "
+                       "instr_operand_nbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-int
-rte_swx_ctl_selector_member_id_field_info_get(struct rte_swx_pipeline *p,
-        uint32_t selector_id,
-        struct rte_swx_ctl_table_match_field_info *field)
-{
-       struct selector *s;
+       case INSTR_JMP_EQ_HM:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) == "
+                       "instr_operand_hbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       if (!p || (selector_id >= p->n_selectors) || !field)
-               return -EINVAL;
+       case INSTR_JMP_EQ_HH:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) == "
+                       "instr_operand_nbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       s = selector_find_by_id(p, selector_id);
-       if (!s)
-               return -EINVAL;
+       case INSTR_JMP_EQ_I:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) == "
+                       "pipeline_instructions[%u].jmp.b_val)",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       field->match_type = RTE_SWX_TABLE_MATCH_EXACT;
-       field->is_header = 0;
-       field->n_bits = s->member_id_field->n_bits;
-       field->offset = s->member_id_field->offset;
+       case INSTR_JMP_NEQ:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) != "
+                       "instr_operand_hbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       return 0;
-}
+       case INSTR_JMP_NEQ_MH:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) != "
+                       "instr_operand_nbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-int
-rte_swx_pipeline_table_state_get(struct rte_swx_pipeline *p,
-                                struct rte_swx_table_state **table_state)
-{
-       if (!p || !table_state || !p->build_done)
-               return -EINVAL;
+       case INSTR_JMP_NEQ_HM:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) != "
+                       "instr_operand_hbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       *table_state = p->table_state;
-       return 0;
-}
+       case INSTR_JMP_NEQ_HH:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) != "
+                       "instr_operand_nbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-int
-rte_swx_pipeline_table_state_set(struct rte_swx_pipeline *p,
-                                struct rte_swx_table_state *table_state)
-{
-       if (!p || !table_state || !p->build_done)
-               return -EINVAL;
+       case INSTR_JMP_NEQ_I:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) != "
+                       "pipeline_instructions[%u].jmp.b_val)",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       p->table_state = table_state;
-       return 0;
-}
+       case INSTR_JMP_LT:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) < "
+                       "instr_operand_hbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-int
-rte_swx_ctl_pipeline_port_in_stats_read(struct rte_swx_pipeline *p,
-                                       uint32_t port_id,
-                                       struct rte_swx_port_in_stats *stats)
-{
-       struct port_in *port;
+       case INSTR_JMP_LT_MH:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) < "
+                       "instr_operand_nbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       if (!p || !stats)
-               return -EINVAL;
+       case INSTR_JMP_LT_HM:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) < "
+                       "instr_operand_hbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       port = port_in_find(p, port_id);
-       if (!port)
-               return -EINVAL;
+       case INSTR_JMP_LT_HH:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) < "
+                       "instr_operand_nbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       port->type->ops.stats_read(port->obj, stats);
-       return 0;
-}
+       case INSTR_JMP_LT_MI:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) < "
+                       "pipeline_instructions[%u].jmp.b_val)",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-int
-rte_swx_ctl_pipeline_port_out_stats_read(struct rte_swx_pipeline *p,
-                                        uint32_t port_id,
-                                        struct rte_swx_port_out_stats *stats)
-{
-       struct port_out *port;
+       case INSTR_JMP_LT_HI:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) < "
+                       "pipeline_instructions[%u].jmp.b_val)",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       if (!p || !stats)
-               return -EINVAL;
+       case INSTR_JMP_GT:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) > "
+                       "instr_operand_hbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       port = port_out_find(p, port_id);
-       if (!port)
-               return -EINVAL;
+       case INSTR_JMP_GT_MH:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) > "
+                       "instr_operand_nbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       port->type->ops.stats_read(port->obj, stats);
-       return 0;
-}
+       case INSTR_JMP_GT_HM:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) > "
+                       "instr_operand_hbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-int
-rte_swx_ctl_pipeline_table_stats_read(struct rte_swx_pipeline *p,
-                                     const char *table_name,
-                                     struct rte_swx_table_stats *stats)
-{
-       struct table *table;
-       struct table_statistics *table_stats;
+       case INSTR_JMP_GT_HH:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) > "
+                       "instr_operand_nbo(t, &pipeline_instructions[%u].jmp.b))",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
 
-       if (!p || !table_name || !table_name[0] || !stats || !stats->n_pkts_action)
+       case INSTR_JMP_GT_MI:
+               fprintf(f,
+                       "if (instr_operand_hbo(t, &pipeline_instructions[%u].jmp.a) > "
+                       "pipeline_instructions[%u].jmp.b_val)",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
+
+       case INSTR_JMP_GT_HI:
+               fprintf(f,
+                       "if (instr_operand_nbo(t, &pipeline_instructions[%u].jmp.a) > "
+                       "pipeline_instructions[%u].jmp.b_val)",
+                       jmp_instr_id,
+                       jmp_instr_id);
+               break;
+
+       default:
+               break;
+       }
+
+       /* Find the instruction group of the jump instruction. */
+       jmp_g = instruction_group_list_group_find(igl, jmp_instr_id);
+       if (!jmp_g)
                return -EINVAL;
 
-       table = table_find(p, table_name);
-       if (!table)
+       /* Find the instruction group of the jump destination instruction. */
+       data = label_find(p->instruction_data, p->n_instructions, jmp_data->jmp_label);
+       if (!data)
                return -EINVAL;
 
-       table_stats = &p->table_stats[table->id];
+       instr_id = data - p->instruction_data;
 
-       memcpy(stats->n_pkts_action,
-              table_stats->n_pkts_action,
-              p->n_actions * sizeof(uint64_t));
+       g = instruction_group_list_group_find(igl, instr_id);
+       if (!g)
+               return -EINVAL;
 
-       stats->n_pkts_hit = table_stats->n_pkts_hit[1];
-       stats->n_pkts_miss = table_stats->n_pkts_hit[0];
+       /* Code generation for "near" jump (same instruction group) or "far" jump (different
+        * instruction group).
+        */
+       if (g->group_id == jmp_g->group_id)
+               fprintf(f,
+                       "\n\t\tgoto %s;\n",
+                       jmp_data->jmp_label);
+       else
+               fprintf(f,
+                       " {\n"
+                       "\t\tthread_ip_set(t, &p->instructions[%u]);\n"
+                       "\t\treturn;\n"
+                       "\t}\n\n",
+                       g->group_id);
 
        return 0;
 }
 
-int
-rte_swx_ctl_pipeline_selector_stats_read(struct rte_swx_pipeline *p,
-       const char *selector_name,
-       struct rte_swx_pipeline_selector_stats *stats)
+static void
+instruction_group_list_codegen(struct instruction_group_list *igl,
+                              struct rte_swx_pipeline *p,
+                              FILE *f)
 {
-       struct selector *s;
+       struct instruction_group *g;
+       uint32_t i;
+       int is_required = 0;
 
-       if (!p || !selector_name || !selector_name[0] || !stats)
-               return -EINVAL;
+       /* Check if code generation is required. */
+       TAILQ_FOREACH(g, igl, node)
+               if (g->first_instr_id < g->last_instr_id)
+                       is_required = 1;
 
-       s = selector_find(p, selector_name);
-       if (!s)
-               return -EINVAL;
+       if (!is_required)
+               return;
 
-       stats->n_pkts = p->selector_stats[s->id].n_pkts;
+       /* Generate the code for the pipeline instruction array. */
+       fprintf(f,
+               "static const struct instruction pipeline_instructions[] = {\n");
 
-       return 0;
-}
+       for (i = 0; i < p->n_instructions; i++) {
+               struct instruction *instr = &p->instructions[i];
+               instruction_export_t func = export_table[instr->type];
 
-int
-rte_swx_ctl_regarray_info_get(struct rte_swx_pipeline *p,
-                             uint32_t regarray_id,
-                             struct rte_swx_ctl_regarray_info *regarray)
-{
-       struct regarray *r;
+               func(instr, f);
+       }
 
-       if (!p || !regarray)
-               return -EINVAL;
+       fprintf(f, "};\n\n");
 
-       r = regarray_find_by_id(p, regarray_id);
-       if (!r)
-               return -EINVAL;
+       /* Generate the code for the pipeline functions: one function for each instruction group
+        * that contains more than one instruction.
+        */
+       TAILQ_FOREACH(g, igl, node) {
+               struct instruction *last_instr;
+               uint32_t j;
 
-       strcpy(regarray->name, r->name);
-       regarray->size = r->size;
-       return 0;
-}
+               /* Skip if group contains a single instruction. */
+               if (g->last_instr_id == g->first_instr_id)
+                       continue;
 
-int
-rte_swx_ctl_pipeline_regarray_read(struct rte_swx_pipeline *p,
-                                  const char *regarray_name,
-                                  uint32_t regarray_index,
-                                  uint64_t *value)
-{
-       struct regarray *regarray;
-       struct regarray_runtime *r;
+               /* Generate new pipeline function. */
+               fprintf(f,
+                       "void\n"
+                       "pipeline_func_%u(struct rte_swx_pipeline *p)\n"
+                       "{\n"
+                       "\tstruct thread *t = &p->threads[p->thread_id];\n"
+                       "\n",
+                       g->group_id);
+
+               /* Generate the code for each pipeline instruction. */
+               for (j = g->first_instr_id; j <= g->last_instr_id; j++) {
+                       struct instruction *instr = &p->instructions[j];
+                       struct instruction_data *data = &p->instruction_data[j];
+
+                       /* Label, if present. */
+                       if (data->label[0])
+                               fprintf(f, "\n%s : ", data->label);
+                       else
+                               fprintf(f, "\n\t");
+
+                       /* TX instruction type. */
+                       if (instruction_does_tx(instr)) {
+                               pipeline_instr_does_tx_codegen(p, j, instr, f);
+                               continue;
+                       }
 
-       if (!p || !regarray_name || !value)
-               return -EINVAL;
+                       /* Jump instruction type. */
+                       if (instruction_is_jmp(instr)) {
+                               pipeline_instr_jmp_codegen(p, igl, j, instr, data, f);
+                               continue;
+                       }
 
-       regarray = regarray_find(p, regarray_name);
-       if (!regarray || (regarray_index >= regarray->size))
-               return -EINVAL;
+                       /* Any other instruction type. */
+                       fprintf(f,
+                               "%s(p, t, &pipeline_instructions[%u]);\n",
+                               instr_type_to_func(instr),
+                               j);
+               }
 
-       r = &p->regarray_runtime[regarray->id];
-       *value = r->regarray[regarray_index];
-       return 0;
+               /* Finalize the generated pipeline function. For some instructions such as TX,
+                * emit-many-and-TX and unconditional jump, the next instruction has been already
+                * decided unconditionally and the instruction pointer of the current thread set
+                * accordingly; for all the other instructions, the instruction pointer must be
+                * incremented now.
+                */
+               last_instr = &p->instructions[g->last_instr_id];
+
+               if (!instruction_does_tx(last_instr) && (last_instr->type != INSTR_JMP))
+                       fprintf(f,
+                               "thread_ip_inc(p);\n");
+
+               fprintf(f,
+                       "}\n"
+                       "\n");
+       }
 }
 
-int
-rte_swx_ctl_pipeline_regarray_write(struct rte_swx_pipeline *p,
-                                  const char *regarray_name,
-                                  uint32_t regarray_index,
-                                  uint64_t value)
+static uint32_t
+instruction_group_list_custom_instructions_count(struct instruction_group_list *igl)
 {
-       struct regarray *regarray;
-       struct regarray_runtime *r;
+       struct instruction_group *g;
+       uint32_t n_custom_instr = 0;
 
-       if (!p || !regarray_name)
-               return -EINVAL;
+       /* Groups with a single instruction: no function is generated for this group, the group
+        * keeps its current instruction. Groups with more than two instructions: one function and
+        * the associated custom instruction get generated for each such group.
+        */
+       TAILQ_FOREACH(g, igl, node) {
+               if (g->first_instr_id == g->last_instr_id)
+                       continue;
 
-       regarray = regarray_find(p, regarray_name);
-       if (!regarray || (regarray_index >= regarray->size))
-               return -EINVAL;
+               n_custom_instr++;
+       }
 
-       r = &p->regarray_runtime[regarray->id];
-       r->regarray[regarray_index] = value;
-       return 0;
+       return n_custom_instr;
 }
 
-int
-rte_swx_ctl_metarray_info_get(struct rte_swx_pipeline *p,
-                             uint32_t metarray_id,
-                             struct rte_swx_ctl_metarray_info *metarray)
+static int
+pipeline_codegen(struct rte_swx_pipeline *p, struct instruction_group_list *igl)
 {
-       struct metarray *m;
+       struct action *a;
+       FILE *f = NULL;
 
-       if (!p || !metarray)
-               return -EINVAL;
+       /* Create the .c file. */
+       f = fopen("/tmp/pipeline.c", "w");
+       if (!f)
+               return -EIO;
 
-       m = metarray_find_by_id(p, metarray_id);
-       if (!m)
-               return -EINVAL;
+       /* Include the .h file. */
+       fprintf(f, "#include \"rte_swx_pipeline_internal.h\"\n");
 
-       strcpy(metarray->name, m->name);
-       metarray->size = m->size;
-       return 0;
-}
+       /* Add the code for each action. */
+       TAILQ_FOREACH(a, &p->actions, node) {
+               fprintf(f, "/**\n * Action %s\n */\n\n", a->name);
 
-int
-rte_swx_ctl_meter_profile_add(struct rte_swx_pipeline *p,
-                             const char *name,
-                             struct rte_meter_trtcm_params *params)
-{
-       struct meter_profile *mp;
-       int status;
+               action_data_codegen(a, f);
 
-       CHECK(p, EINVAL);
-       CHECK_NAME(name, EINVAL);
-       CHECK(params, EINVAL);
-       CHECK(!meter_profile_find(p, name), EEXIST);
+               fprintf(f, "\n");
 
-       /* Node allocation. */
-       mp = calloc(1, sizeof(struct meter_profile));
-       CHECK(mp, ENOMEM);
+               action_instr_codegen(a, f);
 
-       /* Node initialization. */
-       strcpy(mp->name, name);
-       memcpy(&mp->params, params, sizeof(struct rte_meter_trtcm_params));
-       status = rte_meter_trtcm_profile_config(&mp->profile, params);
-       if (status) {
-               free(mp);
-               CHECK(0, EINVAL);
+               fprintf(f, "\n");
        }
 
-       /* Node add to tailq. */
-       TAILQ_INSERT_TAIL(&p->meter_profiles, mp, node);
+       /* Add the pipeline code. */
+       instruction_group_list_codegen(igl, p, f);
+
+       /* Close the .c file. */
+       fclose(f);
 
        return 0;
 }
 
-int
-rte_swx_ctl_meter_profile_delete(struct rte_swx_pipeline *p,
-                                const char *name)
+#ifndef RTE_SWX_PIPELINE_CMD_MAX_SIZE
+#define RTE_SWX_PIPELINE_CMD_MAX_SIZE 4096
+#endif
+
+static int
+pipeline_libload(struct rte_swx_pipeline *p, struct instruction_group_list *igl)
 {
-       struct meter_profile *mp;
+       struct action *a;
+       struct instruction_group *g;
+       char *dir_in, *buffer = NULL;
+       const char *dir_out;
+       int status = 0;
 
-       CHECK(p, EINVAL);
-       CHECK_NAME(name, EINVAL);
+       /* Get the environment variables. */
+       dir_in = getenv("RTE_INSTALL_DIR");
+       if (!dir_in) {
+               status = -EINVAL;
+               goto free;
+       }
 
-       mp = meter_profile_find(p, name);
-       CHECK(mp, EINVAL);
-       CHECK(!mp->n_users, EBUSY);
+       dir_out = "/tmp";
 
-       /* Remove node from tailq. */
-       TAILQ_REMOVE(&p->meter_profiles, mp, node);
-       free(mp);
+       /* Memory allocation for the command buffer. */
+       buffer = malloc(RTE_SWX_PIPELINE_CMD_MAX_SIZE);
+       if (!buffer) {
+               status = -ENOMEM;
+               goto free;
+       }
+
+       snprintf(buffer,
+                RTE_SWX_PIPELINE_CMD_MAX_SIZE,
+                "gcc -c -O3 -fpic -Wno-deprecated-declarations -o %s/pipeline.o %s/pipeline.c "
+                "-I %s/lib/pipeline "
+                "-I %s/lib/eal/include "
+                "-I %s/lib/eal/x86/include "
+                "-I %s/lib/eal/include/generic "
+                "-I %s/lib/meter "
+                "-I %s/lib/port "
+                "-I %s/lib/table "
+                "-I %s/lib/pipeline "
+                "-I %s/config "
+                "-I %s/build "
+                "-I %s/lib/eal/linux/include "
+                ">%s/pipeline.log 2>&1 "
+                "&& "
+                "gcc -shared %s/pipeline.o -o %s/libpipeline.so "
+                ">>%s/pipeline.log 2>&1",
+                dir_out,
+                dir_out,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_in,
+                dir_out,
+                dir_out,
+                dir_out,
+                dir_out);
+
+       /* Build the shared object library. */
+       status = system(buffer);
+       if (status)
+               goto free;
 
-       return 0;
-}
+       /* Open library. */
+       snprintf(buffer,
+                RTE_SWX_PIPELINE_CMD_MAX_SIZE,
+                "%s/libpipeline.so",
+                dir_out);
 
-int
-rte_swx_ctl_meter_reset(struct rte_swx_pipeline *p,
-                       const char *metarray_name,
-                       uint32_t metarray_index)
-{
-       struct meter_profile *mp_old;
-       struct metarray *metarray;
-       struct metarray_runtime *metarray_runtime;
-       struct meter *m;
+       p->lib = dlopen(buffer, RTLD_LAZY);
+       if (!p->lib) {
+               status = -EIO;
+               goto free;
+       }
 
-       CHECK(p, EINVAL);
-       CHECK_NAME(metarray_name, EINVAL);
+       /* Get the action function symbols. */
+       TAILQ_FOREACH(a, &p->actions, node) {
+               snprintf(buffer, RTE_SWX_PIPELINE_CMD_MAX_SIZE, "action_%s_run", a->name);
 
-       metarray = metarray_find(p, metarray_name);
-       CHECK(metarray, EINVAL);
-       CHECK(metarray_index < metarray->size, EINVAL);
+               p->action_funcs[a->id] = dlsym(p->lib, buffer);
+               if (!p->action_funcs[a->id]) {
+                       status = -EINVAL;
+                       goto free;
+               }
+       }
 
-       metarray_runtime = &p->metarray_runtime[metarray->id];
-       m = &metarray_runtime->metarray[metarray_index];
-       mp_old = m->profile;
+       /* Get the pipeline function symbols. */
+       TAILQ_FOREACH(g, igl, node) {
+               if (g->first_instr_id == g->last_instr_id)
+                       continue;
 
-       meter_init(m);
+               snprintf(buffer, RTE_SWX_PIPELINE_CMD_MAX_SIZE, "pipeline_func_%u", g->group_id);
 
-       mp_old->n_users--;
+               g->func = dlsym(p->lib, buffer);
+               if (!g->func) {
+                       status = -EINVAL;
+                       goto free;
+               }
+       }
+
+free:
+       if (status && p->lib) {
+               dlclose(p->lib);
+               p->lib = NULL;
+       }
+
+       free(buffer);
+
+       return status;
+}
+
+static int
+pipeline_adjust_check(struct rte_swx_pipeline *p __rte_unused,
+                     struct instruction_group_list *igl)
+{
+       uint32_t n_custom_instr = instruction_group_list_custom_instructions_count(igl);
+
+       /* Check that enough space is available within the pipeline instruction table to store all
+        * the custom instructions.
+        */
+       if (INSTR_CUSTOM_0 + n_custom_instr > RTE_SWX_PIPELINE_INSTRUCTION_TABLE_SIZE_MAX)
+               return -ENOSPC;
 
        return 0;
 }
 
-int
-rte_swx_ctl_meter_set(struct rte_swx_pipeline *p,
-                     const char *metarray_name,
-                     uint32_t metarray_index,
-                     const char *profile_name)
+static void
+pipeline_adjust(struct rte_swx_pipeline *p, struct instruction_group_list *igl)
 {
-       struct meter_profile *mp, *mp_old;
-       struct metarray *metarray;
-       struct metarray_runtime *metarray_runtime;
-       struct meter *m;
+       struct instruction_group *g;
+       uint32_t i;
 
-       CHECK(p, EINVAL);
-       CHECK_NAME(metarray_name, EINVAL);
+       /* Pipeline table instructions. */
+       for (i = 0; i < p->n_instructions; i++) {
+               struct instruction *instr = &p->instructions[i];
 
-       metarray = metarray_find(p, metarray_name);
-       CHECK(metarray, EINVAL);
-       CHECK(metarray_index < metarray->size, EINVAL);
+               if (instr->type == INSTR_TABLE)
+                       instr->type = INSTR_TABLE_AF;
 
-       mp = meter_profile_find(p, profile_name);
-       CHECK(mp, EINVAL);
+               if (instr->type == INSTR_LEARNER)
+                       instr->type = INSTR_LEARNER_AF;
+       }
 
-       metarray_runtime = &p->metarray_runtime[metarray->id];
-       m = &metarray_runtime->metarray[metarray_index];
-       mp_old = m->profile;
+       /* Pipeline custom instructions. */
+       i = 0;
+       TAILQ_FOREACH(g, igl, node) {
+               struct instruction *instr = &p->instructions[g->first_instr_id];
+               uint32_t j;
 
-       memset(m, 0, sizeof(struct meter));
-       rte_meter_trtcm_config(&m->m, &mp->profile);
-       m->profile = mp;
-       m->color_mask = RTE_COLORS;
+               if (g->first_instr_id == g->last_instr_id)
+                       continue;
 
-       mp->n_users++;
-       mp_old->n_users--;
+               /* Install a new custom instruction. */
+               p->instruction_table[INSTR_CUSTOM_0 + i] = g->func;
 
-       return 0;
+               /* First instruction of the group: change its type to the new custom instruction. */
+               instr->type = INSTR_CUSTOM_0 + i;
+
+               /* All the subsequent instructions of the group: invalidate. */
+               for (j = g->first_instr_id + 1; j <= g->last_instr_id; j++) {
+                       struct instruction_data *data = &p->instruction_data[j];
+
+                       data->invalid = 1;
+               }
+
+               i++;
+       }
+
+       /* Remove the invalidated instructions. */
+       p->n_instructions = instr_compact(p->instructions, p->instruction_data, p->n_instructions);
+
+       /* Resolve the jump destination for any "standalone" jump instructions (i.e. those jump
+        * instructions that are the only instruction within their group, so they were left
+        * unmodified).
+        */
+       instr_jmp_resolve(p->instructions, p->instruction_data, p->n_instructions);
 }
 
-int
-rte_swx_ctl_meter_stats_read(struct rte_swx_pipeline *p,
-                            const char *metarray_name,
-                            uint32_t metarray_index,
-                            struct rte_swx_ctl_meter_stats *stats)
+static int
+pipeline_compile(struct rte_swx_pipeline *p)
 {
-       struct metarray *metarray;
-       struct metarray_runtime *metarray_runtime;
-       struct meter *m;
+       struct instruction_group_list *igl = NULL;
+       int status = 0;
 
-       CHECK(p, EINVAL);
-       CHECK_NAME(metarray_name, EINVAL);
+       igl = instruction_group_list_create(p);
+       if (!igl) {
+               status = -ENOMEM;
+               goto free;
+       }
 
-       metarray = metarray_find(p, metarray_name);
-       CHECK(metarray, EINVAL);
-       CHECK(metarray_index < metarray->size, EINVAL);
+       /* Code generation. */
+       status = pipeline_codegen(p, igl);
+       if (status)
+               goto free;
 
-       CHECK(stats, EINVAL);
+       /* Build and load the shared object library. */
+       status = pipeline_libload(p, igl);
+       if (status)
+               goto free;
 
-       metarray_runtime = &p->metarray_runtime[metarray->id];
-       m = &metarray_runtime->metarray[metarray_index];
+       /* Adjust instructions. */
+       status = pipeline_adjust_check(p, igl);
+       if (status)
+               goto free;
 
-       memcpy(stats->n_pkts, m->n_pkts, sizeof(m->n_pkts));
-       memcpy(stats->n_bytes, m->n_bytes, sizeof(m->n_bytes));
+       pipeline_adjust(p, igl);
 
-       return 0;
+free:
+       instruction_group_list_free(igl);
+
+       return status;
 }