examples/ip_pipeline: add enable and disable commands

Add commands to enable and disable the pipeline on the thread.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>

diff --git a/examples/ip_pipeline/cli.c b/examples/ip_pipeline/cli.c
index e96f3a6..2032563 100644 (file)
--- a/examples/ip_pipeline/cli.c
+++ b/examples/ip_pipeline/cli.c
@@ -17,6 +17,7 @@
 #include "pipeline.h"
 #include "swq.h"
 #include "tap.h"
+#include "thread.h"
 #include "tmgr.h"
 
 #ifndef CMD_MAX_TOKENS
@@ -1936,6 +1937,91 @@ cmd_pipeline_port_in_table(char **tokens,
        }
 }
 
+/**
+ * thread <thread_id> pipeline <pipeline_name> enable
+ */
+static void
+cmd_thread_pipeline_enable(char **tokens,
+       uint32_t n_tokens,
+       char *out,
+       size_t out_size)
+{
+       char *pipeline_name;
+       uint32_t thread_id;
+       int status;
+
+       if (n_tokens != 5) {
+               snprintf(out, out_size, MSG_ARG_MISMATCH, tokens[0]);
+               return;
+       }
+
+       if (parser_read_uint32(&thread_id, tokens[1]) != 0) {
+               snprintf(out, out_size, MSG_ARG_INVALID, "thread_id");
+               return;
+       }
+
+       if (strcmp(tokens[2], "pipeline") != 0) {
+               snprintf(out, out_size, MSG_ARG_NOT_FOUND, "pipeline");
+               return;
+       }
+
+       pipeline_name = tokens[3];
+
+       if (strcmp(tokens[4], "enable") != 0) {
+               snprintf(out, out_size, MSG_ARG_NOT_FOUND, "enable");
+               return;
+       }
+
+       status = thread_pipeline_enable(thread_id, pipeline_name);
+       if (status) {
+               snprintf(out, out_size, MSG_CMD_FAIL, "thread pipeline enable");
+               return;
+       }
+}
+
+/**
+ * thread <thread_id> pipeline <pipeline_name> disable
+ */
+static void
+cmd_thread_pipeline_disable(char **tokens,
+       uint32_t n_tokens,
+       char *out,
+       size_t out_size)
+{
+       char *pipeline_name;
+       uint32_t thread_id;
+       int status;
+
+       if (n_tokens != 5) {
+               snprintf(out, out_size, MSG_ARG_MISMATCH, tokens[0]);
+               return;
+       }
+
+       if (parser_read_uint32(&thread_id, tokens[1]) != 0) {
+               snprintf(out, out_size, MSG_ARG_INVALID, "thread_id");
+               return;
+       }
+
+       if (strcmp(tokens[2], "pipeline") != 0) {
+               snprintf(out, out_size, MSG_ARG_NOT_FOUND, "pipeline");
+               return;
+       }
+
+       pipeline_name = tokens[3];
+
+       if (strcmp(tokens[4], "disable") != 0) {
+               snprintf(out, out_size, MSG_ARG_NOT_FOUND, "disable");
+               return;
+       }
+
+       status = thread_pipeline_disable(thread_id, pipeline_name);
+       if (status) {
+               snprintf(out, out_size, MSG_CMD_FAIL,
+                       "thread pipeline disable");
+               return;
+       }
+}
+
 void
 cli_process(char *in, char *out, size_t out_size)
 {
@@ -2064,6 +2150,22 @@ cli_process(char *in, char *out, size_t out_size)
                }
        }
 
+       if (strcmp(tokens[0], "thread") == 0) {
+               if ((n_tokens >= 5) &&
+                       (strcmp(tokens[4], "enable") == 0)) {
+                       cmd_thread_pipeline_enable(tokens, n_tokens,
+                               out, out_size);
+                       return;
+               }
+
+               if ((n_tokens >= 5) &&
+                       (strcmp(tokens[4], "disable") == 0)) {
+                       cmd_thread_pipeline_disable(tokens, n_tokens,
+                               out, out_size);
+                       return;
+               }
+       }
+
        snprintf(out, out_size, MSG_CMD_UNKNOWN, tokens[0]);
 }
 

diff --git a/examples/ip_pipeline/thread.c b/examples/ip_pipeline/thread.c
index 805a2ae..6c555dc 100644 (file)
--- a/examples/ip_pipeline/thread.c
+++ b/examples/ip_pipeline/thread.c
@@ -159,17 +159,192 @@ thread_init(void)
  * Master thread & data plane threads: message passing
  */
 enum thread_req_type {
+       THREAD_REQ_PIPELINE_ENABLE = 0,
+       THREAD_REQ_PIPELINE_DISABLE,
        THREAD_REQ_MAX
 };
 
 struct thread_msg_req {
        enum thread_req_type type;
+
+       union {
+               struct {
+                       struct rte_pipeline *p;
+                       struct {
+                               struct rte_table_action *a;
+                       } table[RTE_PIPELINE_TABLE_MAX];
+                       struct rte_ring *msgq_req;
+                       struct rte_ring *msgq_rsp;
+                       uint32_t timer_period_ms;
+                       uint32_t n_tables;
+               } pipeline_enable;
+
+               struct {
+                       struct rte_pipeline *p;
+               } pipeline_disable;
+       };
 };
 
 struct thread_msg_rsp {
        int status;
 };
 
+/**
+ * Master thread
+ */
+static struct thread_msg_req *
+thread_msg_alloc(void)
+{
+       size_t size = RTE_MAX(sizeof(struct thread_msg_req),
+               sizeof(struct thread_msg_rsp));
+
+       return calloc(1, size);
+}
+
+static void
+thread_msg_free(struct thread_msg_rsp *rsp)
+{
+       free(rsp);
+}
+
+static struct thread_msg_rsp *
+thread_msg_send_recv(uint32_t thread_id,
+       struct thread_msg_req *req)
+{
+       struct thread *t = &thread[thread_id];
+       struct rte_ring *msgq_req = t->msgq_req;
+       struct rte_ring *msgq_rsp = t->msgq_rsp;
+       struct thread_msg_rsp *rsp;
+       int status;
+
+       /* send */
+       do {
+               status = rte_ring_sp_enqueue(msgq_req, req);
+       } while (status == -ENOBUFS);
+
+       /* recv */
+       do {
+               status = rte_ring_sc_dequeue(msgq_rsp, (void **) &rsp);
+       } while (status != 0);
+
+       return rsp;
+}
+
+int
+thread_pipeline_enable(uint32_t thread_id,
+       const char *pipeline_name)
+{
+       struct pipeline *p = pipeline_find(pipeline_name);
+       struct thread *t;
+       struct thread_msg_req *req;
+       struct thread_msg_rsp *rsp;
+       uint32_t i;
+       int status;
+
+       /* Check input params */
+       if ((thread_id >= RTE_MAX_LCORE) ||
+               (p == NULL) ||
+               (p->n_ports_in == 0) ||
+               (p->n_ports_out == 0) ||
+               (p->n_tables == 0))
+               return -1;
+
+       t = &thread[thread_id];
+       if ((t->enabled == 0) ||
+               p->enabled)
+               return -1;
+
+       /* Allocate request */
+       req = thread_msg_alloc();
+       if (req == NULL)
+               return -1;
+
+       /* Write request */
+       req->type = THREAD_REQ_PIPELINE_ENABLE;
+       req->pipeline_enable.p = p->p;
+       for (i = 0; i < p->n_tables; i++)
+               req->pipeline_enable.table[i].a =
+                       p->table[i].a;
+       req->pipeline_enable.msgq_req = p->msgq_req;
+       req->pipeline_enable.msgq_rsp = p->msgq_rsp;
+       req->pipeline_enable.timer_period_ms = p->timer_period_ms;
+       req->pipeline_enable.n_tables = p->n_tables;
+
+       /* Send request and wait for response */
+       rsp = thread_msg_send_recv(thread_id, req);
+       if (rsp == NULL)
+               return -1;
+
+       /* Read response */
+       status = rsp->status;
+
+       /* Free response */
+       thread_msg_free(rsp);
+
+       /* Request completion */
+       if (status)
+               return status;
+
+       p->thread_id = thread_id;
+       p->enabled = 1;
+
+       return 0;
+}
+
+int
+thread_pipeline_disable(uint32_t thread_id,
+       const char *pipeline_name)
+{
+       struct pipeline *p = pipeline_find(pipeline_name);
+       struct thread *t;
+       struct thread_msg_req *req;
+       struct thread_msg_rsp *rsp;
+       int status;
+
+       /* Check input params */
+       if ((thread_id >= RTE_MAX_LCORE) ||
+               (p == NULL))
+               return -1;
+
+       t = &thread[thread_id];
+       if (t->enabled == 0)
+               return -1;
+
+       if (p->enabled == 0)
+               return 0;
+
+       if (p->thread_id != thread_id)
+               return -1;
+
+       /* Allocate request */
+       req = thread_msg_alloc();
+       if (req == NULL)
+               return -1;
+
+       /* Write request */
+       req->type = THREAD_REQ_PIPELINE_DISABLE;
+       req->pipeline_disable.p = p->p;
+
+       /* Send request and wait for response */
+       rsp = thread_msg_send_recv(thread_id, req);
+       if (rsp == NULL)
+               return -1;
+
+       /* Read response */
+       status = rsp->status;
+
+       /* Free response */
+       thread_msg_free(rsp);
+
+       /* Request completion */
+       if (status)
+               return status;
+
+       p->enabled = 0;
+
+       return 0;
+}
+
 /**
  * Data plane threads: message handling
  */
@@ -197,6 +372,79 @@ thread_msg_send(struct rte_ring *msgq_rsp,
        } while (status == -ENOBUFS);
 }
 
+static struct thread_msg_rsp *
+thread_msg_handle_pipeline_enable(struct thread_data *t,
+       struct thread_msg_req *req)
+{
+       struct thread_msg_rsp *rsp = (struct thread_msg_rsp *) req;
+       struct pipeline_data *p = &t->pipeline_data[t->n_pipelines];
+       uint32_t i;
+
+       /* Request */
+       if (t->n_pipelines >= THREAD_PIPELINES_MAX) {
+               rsp->status = -1;
+               return rsp;
+       }
+
+       t->p[t->n_pipelines] = req->pipeline_enable.p;
+
+       p->p = req->pipeline_enable.p;
+       for (i = 0; i < req->pipeline_enable.n_tables; i++)
+               p->table_data[i].a =
+                       req->pipeline_enable.table[i].a;
+
+       p->n_tables = req->pipeline_enable.n_tables;
+
+       p->msgq_req = req->pipeline_enable.msgq_req;
+       p->msgq_rsp = req->pipeline_enable.msgq_rsp;
+       p->timer_period =
+               (rte_get_tsc_hz() * req->pipeline_enable.timer_period_ms) / 1000;
+       p->time_next = rte_get_tsc_cycles() + p->timer_period;
+
+       t->n_pipelines++;
+
+       /* Response */
+       rsp->status = 0;
+       return rsp;
+}
+
+static struct thread_msg_rsp *
+thread_msg_handle_pipeline_disable(struct thread_data *t,
+       struct thread_msg_req *req)
+{
+       struct thread_msg_rsp *rsp = (struct thread_msg_rsp *) req;
+       uint32_t n_pipelines = t->n_pipelines;
+       struct rte_pipeline *pipeline = req->pipeline_disable.p;
+       uint32_t i;
+
+       /* find pipeline */
+       for (i = 0; i < n_pipelines; i++) {
+               struct pipeline_data *p = &t->pipeline_data[i];
+
+               if (p->p != pipeline)
+                       continue;
+
+               if (i < n_pipelines - 1) {
+                       struct rte_pipeline *pipeline_last =
+                               t->p[n_pipelines - 1];
+                       struct pipeline_data *p_last =
+                               &t->pipeline_data[n_pipelines - 1];
+
+                       t->p[i] = pipeline_last;
+                       memcpy(p, p_last, sizeof(*p));
+               }
+
+               t->n_pipelines--;
+
+               rsp->status = 0;
+               return rsp;
+       }
+
+       /* should not get here */
+       rsp->status = 0;
+       return rsp;
+}
+
 static void
 thread_msg_handle(struct thread_data *t)
 {
@@ -209,6 +457,14 @@ thread_msg_handle(struct thread_data *t)
                        break;
 
                switch (req->type) {
+               case THREAD_REQ_PIPELINE_ENABLE:
+                       rsp = thread_msg_handle_pipeline_enable(t, req);
+                       break;
+
+               case THREAD_REQ_PIPELINE_DISABLE:
+                       rsp = thread_msg_handle_pipeline_disable(t, req);
+                       break;
+
                default:
                        rsp = (struct thread_msg_rsp *) req;
                        rsp->status = -1;

diff --git a/examples/ip_pipeline/thread.h b/examples/ip_pipeline/thread.h
index 47db428..facdf00 100644 (file)
--- a/examples/ip_pipeline/thread.h
+++ b/examples/ip_pipeline/thread.h
@@ -7,6 +7,14 @@
 
 #include <stdint.h>
 
+int
+thread_pipeline_enable(uint32_t thread_id,
+       const char *pipeline_name);
+
+int
+thread_pipeline_disable(uint32_t thread_id,
+       const char *pipeline_name);
+
 int
 thread_init(void);