drivers/net/enic/enic_fm_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2008-2019 Cisco Systems, Inc.  All rights reserved.
   3  */
   4
   5 #include <errno.h>
   6 #include <stdint.h>
   7 #include <rte_log.h>
   8 #include <ethdev_driver.h>
   9 #include <rte_flow_driver.h>
  10 #include <rte_ether.h>
  11 #include <rte_hash.h>
  12 #include <rte_jhash.h>
  13 #include <rte_ip.h>
  14 #include <rte_udp.h>
  15 #include <rte_memzone.h>
  16
  17 #include "enic_compat.h"
  18 #include "enic.h"
  19 #include "vnic_dev.h"
  20 #include "vnic_nic.h"
  21
  22 #define IP_DEFTTL  64   /* from RFC 1340. */
  23 #define IP6_VTC_FLOW 0x60000000
  24
  25 /* Highest Item type supported by Flowman */
  26 #define FM_MAX_ITEM_TYPE RTE_FLOW_ITEM_TYPE_VXLAN
  27
  28 /* Up to 1024 TCAM entries */
  29 #define FM_MAX_TCAM_TABLE_SIZE 1024
  30
  31 /* Up to 4096 entries per exact match table */
  32 #define FM_MAX_EXACT_TABLE_SIZE 4096
  33
  34 /* Number of counters to increase on for each increment */
  35 #define FM_COUNTERS_EXPAND  100
  36
  37 #define FM_INVALID_HANDLE 0
  38
  39 /* Low priority used for implicit VF -> representor flow */
  40 #define FM_LOWEST_PRIORITY 100000
  41
  42 /* High priority used for implicit representor -> VF flow */
  43 #define FM_HIGHEST_PRIORITY 0
  44
  45 /* Tag used for implicit VF <-> representor flows */
  46 #define FM_VF_REP_TAG 1
  47
  48 /* Max number of actions supported by VIC is 2K. Make hash table double that. */
  49 #define FM_MAX_ACTION_TABLE_SIZE 4096
  50
  51 /*
  52  * Flow exact match tables (FET) in the VIC and rte_flow groups.
  53  * Use a simple scheme to map groups to tables.
  54  * Group 0 uses the single TCAM tables, one for each direction.
  55  * Group 1, 2, ... uses its own exact match table.
  56  *
  57  * The TCAM tables are allocated upfront during init.
  58  *
  59  * Exact match tables are allocated on demand. 3 paths that lead allocations.
  60  *
  61  * 1. Add a flow that jumps from group 0 to group N.
  62  *
  63  * If N does not exist, we allocate an exact match table for it, using
  64  * a dummy key. A key is required for the table.
  65  *
  66  * 2. Add a flow that uses group N.
  67  *
  68  * If N does not exist, we allocate an exact match table for it, using
  69  * the flow's key. Subsequent flows to the same group all should have
  70  * the same key.
  71  *
  72  * Without a jump flow to N, N is not reachable in hardware. No packets
  73  * reach N and match.
  74  *
  75  * 3. Add a flow to an empty group N.
  76  *
  77  * N has been created via (1) and the dummy key. We free that table, allocate
  78  * a new table using the new flow's key. Also re-do the existing jump flow to
  79  * point to the new table.
  80  */
  81 #define FM_TCAM_RTE_GROUP 0
  82
  83 struct enic_fm_fet {
  84         TAILQ_ENTRY(enic_fm_fet) list;
  85         uint32_t group; /* rte_flow group ID */
  86         uint64_t handle; /* Exact match table handle from flowman */
  87         uint8_t ingress;
  88         uint8_t default_key;
  89         int ref; /* Reference count via get/put */
  90         struct fm_key_template key; /* Key associated with the table */
  91 };
  92
  93 struct enic_fm_counter {
  94         SLIST_ENTRY(enic_fm_counter) next;
  95         uint32_t handle;
  96 };
  97
  98 struct enic_fm_action {
  99         int ref;
 100         uint64_t handle;
 101         struct fm_action key;
 102 };
 103
 104 /* rte_flow.fm */
 105 struct enic_fm_flow {
 106         bool counter_valid;
 107         uint64_t entry_handle;
 108         struct enic_fm_action  *action;
 109         struct enic_fm_counter *counter;
 110         struct enic_fm_fet *fet;
 111         /* Auto-added steer action for hairpin flows (e.g. vnic->vnic) */
 112         struct enic_fm_flow *hairpin_steer_flow;
 113 };
 114
 115 struct enic_fm_jump_flow {
 116         TAILQ_ENTRY(enic_fm_jump_flow) list;
 117         struct rte_flow *flow;
 118         uint32_t group;
 119         struct fm_tcam_match_entry match;
 120         struct fm_action action;
 121 };
 122
 123 /*
 124  * Flowman uses host memory for commands. This structure is allocated
 125  * in DMA-able memory.
 126  */
 127 union enic_flowman_cmd_mem {
 128         struct fm_tcam_match_table fm_tcam_match_table;
 129         struct fm_exact_match_table fm_exact_match_table;
 130         struct fm_tcam_match_entry fm_tcam_match_entry;
 131         struct fm_exact_match_entry fm_exact_match_entry;
 132         struct fm_action fm_action;
 133 };
 134
 135 /*
 136  * PF has a flowman instance, and VF representors share it with PF.
 137  * PF allocates this structure and owns it. VF representors borrow
 138  * the PF's structure during API calls (e.g. create, query).
 139  */
 140 struct enic_flowman {
 141         struct enic *owner_enic; /* PF */
 142         struct enic *user_enic;  /* API caller (PF or representor) */
 143         /*
 144          * Representors and PF share the same underlying flowman.
 145          * Lock API calls to serialize accesses from them. Only used
 146          * when VF representors are present.
 147          */
 148         rte_spinlock_t lock;
 149         /* Command buffer */
 150         struct {
 151                 union enic_flowman_cmd_mem *va;
 152                 dma_addr_t pa;
 153         } cmd;
 154         /* TCAM tables allocated upfront, used for group 0 */
 155         uint64_t ig_tcam_hndl;
 156         uint64_t eg_tcam_hndl;
 157         /* Counters */
 158         SLIST_HEAD(enic_free_counters, enic_fm_counter) counters;
 159         void *counter_stack;
 160         uint32_t counters_alloced;
 161         /* Exact match tables for groups != 0, dynamically allocated */
 162         TAILQ_HEAD(fet_list, enic_fm_fet) fet_list;
 163         /*
 164          * Default exact match tables used for jump actions to
 165          * non-existent groups.
 166          */
 167         struct enic_fm_fet *default_eg_fet;
 168         struct enic_fm_fet *default_ig_fet;
 169         /* hash table for Action reuse */
 170         struct rte_hash *action_hash;
 171         /* Flows that jump to the default table above */
 172         TAILQ_HEAD(jump_flow_list, enic_fm_jump_flow) jump_list;
 173         /*
 174          * Scratch data used during each invocation of flow_create
 175          * and flow_validate.
 176          */
 177         struct enic_fm_fet *fet;
 178         struct fm_tcam_match_entry tcam_entry;
 179         struct fm_action action;
 180         struct fm_action action_tmp; /* enic_fm_reorder_action_op */
 181         int action_op_count;
 182         /* Tags used for representor flows */
 183         uint8_t vf_rep_tag;
 184         /* For auto-added steer action for hairpin */
 185         int need_hairpin_steer;
 186         uint64_t hairpin_steer_vnic_h;
 187 };
 188
 189 static int enic_fm_tbl_free(struct enic_flowman *fm, uint64_t handle);
 190 /*
 191  * API functions (create, destroy, validate, flush) call begin_fm()
 192  * upon entering to save the caller enic (PF or VF representor) and
 193  * lock. Upon exit, they call end_fm() to unlock.
 194  */
 195 static struct enic_flowman *begin_fm(struct enic *enic);
 196 static void end_fm(struct enic_flowman *fm);
 197 /* Delete internal flows created for representor paths */
 198 static void delete_rep_flows(struct enic *enic);
 199
 200 /*
 201  * Common arguments passed to copy_item functions. Use this structure
 202  * so we can easily add new arguments.
 203  * item: Item specification.
 204  * fm_tcam_entry: Flowman TCAM match entry.
 205  * header_level: 0 for outer header, 1 for inner header.
 206  */
 207 struct copy_item_args {
 208         const struct rte_flow_item *item;
 209         struct fm_tcam_match_entry *fm_tcam_entry;
 210         uint8_t header_level;
 211 };
 212
 213 /* functions for copying items into flowman match */
 214 typedef int (enic_copy_item_fn)(struct copy_item_args *arg);
 215
 216 /* Info about how to copy items into flowman match */
 217 struct enic_fm_items {
 218         /* Function for copying and validating an item. */
 219         enic_copy_item_fn * const copy_item;
 220         /* List of valid previous items. */
 221         const enum rte_flow_item_type * const prev_items;
 222         /*
 223          * True if it's OK for this item to be the first item. For some NIC
 224          * versions, it's invalid to start the stack above layer 3.
 225          */
 226         const uint8_t valid_start_item;
 227 };
 228
 229 static enic_copy_item_fn enic_fm_copy_item_eth;
 230 static enic_copy_item_fn enic_fm_copy_item_ipv4;
 231 static enic_copy_item_fn enic_fm_copy_item_ipv6;
 232 static enic_copy_item_fn enic_fm_copy_item_raw;
 233 static enic_copy_item_fn enic_fm_copy_item_sctp;
 234 static enic_copy_item_fn enic_fm_copy_item_tcp;
 235 static enic_copy_item_fn enic_fm_copy_item_udp;
 236 static enic_copy_item_fn enic_fm_copy_item_vlan;
 237 static enic_copy_item_fn enic_fm_copy_item_vxlan;
 238
 239 /* Ingress actions */
 240 static const enum rte_flow_action_type enic_fm_supported_ig_actions[] = {
 241         RTE_FLOW_ACTION_TYPE_COUNT,
 242         RTE_FLOW_ACTION_TYPE_DROP,
 243         RTE_FLOW_ACTION_TYPE_FLAG,
 244         RTE_FLOW_ACTION_TYPE_JUMP,
 245         RTE_FLOW_ACTION_TYPE_MARK,
 246         RTE_FLOW_ACTION_TYPE_OF_POP_VLAN,
 247         RTE_FLOW_ACTION_TYPE_PORT_ID,
 248         RTE_FLOW_ACTION_TYPE_PASSTHRU,
 249         RTE_FLOW_ACTION_TYPE_QUEUE,
 250         RTE_FLOW_ACTION_TYPE_RSS,
 251         RTE_FLOW_ACTION_TYPE_VOID,
 252         RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP,
 253         RTE_FLOW_ACTION_TYPE_VXLAN_DECAP,
 254         RTE_FLOW_ACTION_TYPE_END, /* END must be the last entry */
 255 };
 256
 257 /* Egress actions */
 258 static const enum rte_flow_action_type enic_fm_supported_eg_actions[] = {
 259         RTE_FLOW_ACTION_TYPE_COUNT,
 260         RTE_FLOW_ACTION_TYPE_DROP,
 261         RTE_FLOW_ACTION_TYPE_JUMP,
 262         RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN,
 263         RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP,
 264         RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID,
 265         RTE_FLOW_ACTION_TYPE_PORT_ID,
 266         RTE_FLOW_ACTION_TYPE_PASSTHRU,
 267         RTE_FLOW_ACTION_TYPE_VOID,
 268         RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP,
 269         RTE_FLOW_ACTION_TYPE_END,
 270 };
 271
 272 static const struct enic_fm_items enic_fm_items[] = {
 273         [RTE_FLOW_ITEM_TYPE_RAW] = {
 274                 .copy_item = enic_fm_copy_item_raw,
 275                 .valid_start_item = 0,
 276                 .prev_items = (const enum rte_flow_item_type[]) {
 277                                RTE_FLOW_ITEM_TYPE_UDP,
 278                                RTE_FLOW_ITEM_TYPE_END,
 279                 },
 280         },
 281         [RTE_FLOW_ITEM_TYPE_ETH] = {
 282                 .copy_item = enic_fm_copy_item_eth,
 283                 .valid_start_item = 1,
 284                 .prev_items = (const enum rte_flow_item_type[]) {
 285                                RTE_FLOW_ITEM_TYPE_END,
 286                 },
 287         },
 288         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 289                 .copy_item = enic_fm_copy_item_vlan,
 290                 .valid_start_item = 1,
 291                 .prev_items = (const enum rte_flow_item_type[]) {
 292                                RTE_FLOW_ITEM_TYPE_ETH,
 293                                RTE_FLOW_ITEM_TYPE_END,
 294                 },
 295         },
 296         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 297                 .copy_item = enic_fm_copy_item_ipv4,
 298                 .valid_start_item = 1,
 299                 .prev_items = (const enum rte_flow_item_type[]) {
 300                                RTE_FLOW_ITEM_TYPE_ETH,
 301                                RTE_FLOW_ITEM_TYPE_VLAN,
 302                                RTE_FLOW_ITEM_TYPE_END,
 303                 },
 304         },
 305         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 306                 .copy_item = enic_fm_copy_item_ipv6,
 307                 .valid_start_item = 1,
 308                 .prev_items = (const enum rte_flow_item_type[]) {
 309                                RTE_FLOW_ITEM_TYPE_ETH,
 310                                RTE_FLOW_ITEM_TYPE_VLAN,
 311                                RTE_FLOW_ITEM_TYPE_END,
 312                 },
 313         },
 314         [RTE_FLOW_ITEM_TYPE_UDP] = {
 315                 .copy_item = enic_fm_copy_item_udp,
 316                 .valid_start_item = 1,
 317                 .prev_items = (const enum rte_flow_item_type[]) {
 318                                RTE_FLOW_ITEM_TYPE_IPV4,
 319                                RTE_FLOW_ITEM_TYPE_IPV6,
 320                                RTE_FLOW_ITEM_TYPE_END,
 321                 },
 322         },
 323         [RTE_FLOW_ITEM_TYPE_TCP] = {
 324                 .copy_item = enic_fm_copy_item_tcp,
 325                 .valid_start_item = 1,
 326                 .prev_items = (const enum rte_flow_item_type[]) {
 327                                RTE_FLOW_ITEM_TYPE_IPV4,
 328                                RTE_FLOW_ITEM_TYPE_IPV6,
 329                                RTE_FLOW_ITEM_TYPE_END,
 330                 },
 331         },
 332         [RTE_FLOW_ITEM_TYPE_SCTP] = {
 333                 .copy_item = enic_fm_copy_item_sctp,
 334                 .valid_start_item = 0,
 335                 .prev_items = (const enum rte_flow_item_type[]) {
 336                                RTE_FLOW_ITEM_TYPE_IPV4,
 337                                RTE_FLOW_ITEM_TYPE_IPV6,
 338                                RTE_FLOW_ITEM_TYPE_END,
 339                 },
 340         },
 341         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 342                 .copy_item = enic_fm_copy_item_vxlan,
 343                 .valid_start_item = 1,
 344                 .prev_items = (const enum rte_flow_item_type[]) {
 345                                RTE_FLOW_ITEM_TYPE_UDP,
 346                                RTE_FLOW_ITEM_TYPE_END,
 347                 },
 348         },
 349 };
 350
 351 static int
 352 enic_fm_copy_item_eth(struct copy_item_args *arg)
 353 {
 354         const struct rte_flow_item *item = arg->item;
 355         const struct rte_flow_item_eth *spec = item->spec;
 356         const struct rte_flow_item_eth *mask = item->mask;
 357         const uint8_t lvl = arg->header_level;
 358         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 359         struct fm_header_set *fm_data, *fm_mask;
 360
 361         ENICPMD_FUNC_TRACE();
 362         /* Match all if no spec */
 363         if (!spec)
 364                 return 0;
 365         if (!mask)
 366                 mask = &rte_flow_item_eth_mask;
 367         fm_data = &entry->ftm_data.fk_hdrset[lvl];
 368         fm_mask = &entry->ftm_mask.fk_hdrset[lvl];
 369         fm_data->fk_header_select |= FKH_ETHER;
 370         fm_mask->fk_header_select |= FKH_ETHER;
 371         memcpy(&fm_data->l2.eth, spec, sizeof(struct rte_ether_hdr));
 372         memcpy(&fm_mask->l2.eth, mask, sizeof(struct rte_ether_hdr));
 373         return 0;
 374 }
 375
 376 static int
 377 enic_fm_copy_item_vlan(struct copy_item_args *arg)
 378 {
 379         const struct rte_flow_item *item = arg->item;
 380         const struct rte_flow_item_vlan *spec = item->spec;
 381         const struct rte_flow_item_vlan *mask = item->mask;
 382         const uint8_t lvl = arg->header_level;
 383         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 384         struct fm_header_set *fm_data, *fm_mask;
 385         struct rte_ether_hdr *eth_mask;
 386         struct rte_ether_hdr *eth_val;
 387         uint32_t meta;
 388
 389         ENICPMD_FUNC_TRACE();
 390         fm_data = &entry->ftm_data.fk_hdrset[lvl];
 391         fm_mask = &entry->ftm_mask.fk_hdrset[lvl];
 392         /* Outer and inner packet vlans need different flags */
 393         meta = FKM_VLAN_PRES;
 394         if (lvl > 0)
 395                 meta = FKM_QTAG;
 396         fm_data->fk_metadata |= meta;
 397         fm_mask->fk_metadata |= meta;
 398
 399         /* Match all if no spec */
 400         if (!spec)
 401                 return 0;
 402         if (!mask)
 403                 mask = &rte_flow_item_vlan_mask;
 404
 405         eth_mask = (void *)&fm_mask->l2.eth;
 406         eth_val = (void *)&fm_data->l2.eth;
 407
 408         /*
 409          * Outer TPID cannot be matched. If inner_type is 0, use what is
 410          * in the eth header.
 411          */
 412         if (eth_mask->ether_type && mask->inner_type)
 413                 return -ENOTSUP;
 414
 415         /*
 416          * When packet matching, the VIC always compares vlan-stripped
 417          * L2, regardless of vlan stripping settings. So, the inner type
 418          * from vlan becomes the ether type of the eth header.
 419          */
 420         if (mask->inner_type) {
 421                 eth_mask->ether_type = mask->inner_type;
 422                 eth_val->ether_type = spec->inner_type;
 423         }
 424         fm_data->fk_header_select |= FKH_ETHER | FKH_QTAG;
 425         fm_mask->fk_header_select |= FKH_ETHER | FKH_QTAG;
 426         fm_data->fk_vlan = rte_be_to_cpu_16(spec->tci);
 427         fm_mask->fk_vlan = rte_be_to_cpu_16(mask->tci);
 428         return 0;
 429 }
 430
 431 static int
 432 enic_fm_copy_item_ipv4(struct copy_item_args *arg)
 433 {
 434         const struct rte_flow_item *item = arg->item;
 435         const struct rte_flow_item_ipv4 *spec = item->spec;
 436         const struct rte_flow_item_ipv4 *mask = item->mask;
 437         const uint8_t lvl = arg->header_level;
 438         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 439         struct fm_header_set *fm_data, *fm_mask;
 440
 441         ENICPMD_FUNC_TRACE();
 442         fm_data = &entry->ftm_data.fk_hdrset[lvl];
 443         fm_mask = &entry->ftm_mask.fk_hdrset[lvl];
 444         fm_data->fk_metadata |= FKM_IPV4;
 445         fm_mask->fk_metadata |= FKM_IPV4;
 446
 447         if (!spec)
 448                 return 0;
 449         if (!mask)
 450                 mask = &rte_flow_item_ipv4_mask;
 451
 452         fm_data->fk_header_select |= FKH_IPV4;
 453         fm_mask->fk_header_select |= FKH_IPV4;
 454         memcpy(&fm_data->l3.ip4, spec, sizeof(*spec));
 455         memcpy(&fm_mask->l3.ip4, mask, sizeof(*mask));
 456         return 0;
 457 }
 458
 459 static int
 460 enic_fm_copy_item_ipv6(struct copy_item_args *arg)
 461 {
 462         const struct rte_flow_item *item = arg->item;
 463         const struct rte_flow_item_ipv6 *spec = item->spec;
 464         const struct rte_flow_item_ipv6 *mask = item->mask;
 465         const uint8_t lvl = arg->header_level;
 466         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 467         struct fm_header_set *fm_data, *fm_mask;
 468
 469         ENICPMD_FUNC_TRACE();
 470         fm_data = &entry->ftm_data.fk_hdrset[lvl];
 471         fm_mask = &entry->ftm_mask.fk_hdrset[lvl];
 472         fm_data->fk_metadata |= FKM_IPV6;
 473         fm_mask->fk_metadata |= FKM_IPV6;
 474
 475         if (!spec)
 476                 return 0;
 477         if (!mask)
 478                 mask = &rte_flow_item_ipv6_mask;
 479
 480         fm_data->fk_header_select |= FKH_IPV6;
 481         fm_mask->fk_header_select |= FKH_IPV6;
 482         memcpy(&fm_data->l3.ip6, spec, sizeof(struct rte_ipv6_hdr));
 483         memcpy(&fm_mask->l3.ip6, mask, sizeof(struct rte_ipv6_hdr));
 484         return 0;
 485 }
 486
 487 static int
 488 enic_fm_copy_item_udp(struct copy_item_args *arg)
 489 {
 490         const struct rte_flow_item *item = arg->item;
 491         const struct rte_flow_item_udp *spec = item->spec;
 492         const struct rte_flow_item_udp *mask = item->mask;
 493         const uint8_t lvl = arg->header_level;
 494         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 495         struct fm_header_set *fm_data, *fm_mask;
 496
 497         ENICPMD_FUNC_TRACE();
 498         fm_data = &entry->ftm_data.fk_hdrset[lvl];
 499         fm_mask = &entry->ftm_mask.fk_hdrset[lvl];
 500         fm_data->fk_metadata |= FKM_UDP;
 501         fm_mask->fk_metadata |= FKM_UDP;
 502
 503         if (!spec)
 504                 return 0;
 505         if (!mask)
 506                 mask = &rte_flow_item_udp_mask;
 507
 508         fm_data->fk_header_select |= FKH_UDP;
 509         fm_mask->fk_header_select |= FKH_UDP;
 510         memcpy(&fm_data->l4.udp, spec, sizeof(*spec));
 511         memcpy(&fm_mask->l4.udp, mask, sizeof(*mask));
 512         return 0;
 513 }
 514
 515 static int
 516 enic_fm_copy_item_tcp(struct copy_item_args *arg)
 517 {
 518         const struct rte_flow_item *item = arg->item;
 519         const struct rte_flow_item_tcp *spec = item->spec;
 520         const struct rte_flow_item_tcp *mask = item->mask;
 521         const uint8_t lvl = arg->header_level;
 522         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 523         struct fm_header_set *fm_data, *fm_mask;
 524
 525         ENICPMD_FUNC_TRACE();
 526         fm_data = &entry->ftm_data.fk_hdrset[lvl];
 527         fm_mask = &entry->ftm_mask.fk_hdrset[lvl];
 528         fm_data->fk_metadata |= FKM_TCP;
 529         fm_mask->fk_metadata |= FKM_TCP;
 530
 531         if (!spec)
 532                 return 0;
 533         if (!mask)
 534                 mask = &rte_flow_item_tcp_mask;
 535
 536         fm_data->fk_header_select |= FKH_TCP;
 537         fm_mask->fk_header_select |= FKH_TCP;
 538         memcpy(&fm_data->l4.tcp, spec, sizeof(*spec));
 539         memcpy(&fm_mask->l4.tcp, mask, sizeof(*mask));
 540         return 0;
 541 }
 542
 543 static int
 544 enic_fm_copy_item_sctp(struct copy_item_args *arg)
 545 {
 546         const struct rte_flow_item *item = arg->item;
 547         const struct rte_flow_item_sctp *spec = item->spec;
 548         const struct rte_flow_item_sctp *mask = item->mask;
 549         const uint8_t lvl = arg->header_level;
 550         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 551         struct fm_header_set *fm_data, *fm_mask;
 552         uint8_t *ip_proto_mask = NULL;
 553         uint8_t *ip_proto = NULL;
 554         uint32_t l3_fkh;
 555
 556         ENICPMD_FUNC_TRACE();
 557         fm_data = &entry->ftm_data.fk_hdrset[lvl];
 558         fm_mask = &entry->ftm_mask.fk_hdrset[lvl];
 559         /*
 560          * The NIC filter API has no flags for "match sctp", so explicitly
 561          * set the protocol number in the IP pattern.
 562          */
 563         if (fm_data->fk_metadata & FKM_IPV4) {
 564                 struct rte_ipv4_hdr *ip;
 565                 ip = (struct rte_ipv4_hdr *)&fm_mask->l3.ip4;
 566                 ip_proto_mask = &ip->next_proto_id;
 567                 ip = (struct rte_ipv4_hdr *)&fm_data->l3.ip4;
 568                 ip_proto = &ip->next_proto_id;
 569                 l3_fkh = FKH_IPV4;
 570         } else if (fm_data->fk_metadata & FKM_IPV6) {
 571                 struct rte_ipv6_hdr *ip;
 572                 ip = (struct rte_ipv6_hdr *)&fm_mask->l3.ip6;
 573                 ip_proto_mask = &ip->proto;
 574                 ip = (struct rte_ipv6_hdr *)&fm_data->l3.ip6;
 575                 ip_proto = &ip->proto;
 576                 l3_fkh = FKH_IPV6;
 577         } else {
 578                 /* Need IPv4/IPv6 pattern first */
 579                 return -EINVAL;
 580         }
 581         *ip_proto = IPPROTO_SCTP;
 582         *ip_proto_mask = 0xff;
 583         fm_data->fk_header_select |= l3_fkh;
 584         fm_mask->fk_header_select |= l3_fkh;
 585
 586         if (!spec)
 587                 return 0;
 588         if (!mask)
 589                 mask = &rte_flow_item_sctp_mask;
 590
 591         fm_data->fk_header_select |= FKH_L4RAW;
 592         fm_mask->fk_header_select |= FKH_L4RAW;
 593         memcpy(fm_data->l4.rawdata, spec, sizeof(*spec));
 594         memcpy(fm_mask->l4.rawdata, mask, sizeof(*mask));
 595         return 0;
 596 }
 597
 598 static int
 599 enic_fm_copy_item_vxlan(struct copy_item_args *arg)
 600 {
 601         const struct rte_flow_item *item = arg->item;
 602         const struct rte_flow_item_vxlan *spec = item->spec;
 603         const struct rte_flow_item_vxlan *mask = item->mask;
 604         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 605         struct fm_header_set *fm_data, *fm_mask;
 606
 607         ENICPMD_FUNC_TRACE();
 608         /* Only 2 header levels (outer and inner) allowed */
 609         if (arg->header_level > 0)
 610                 return -EINVAL;
 611
 612         fm_data = &entry->ftm_data.fk_hdrset[0];
 613         fm_mask = &entry->ftm_mask.fk_hdrset[0];
 614         fm_data->fk_metadata |= FKM_VXLAN;
 615         fm_mask->fk_metadata |= FKM_VXLAN;
 616         /* items from here on out are inner header items */
 617         arg->header_level = 1;
 618
 619         /* Match all if no spec */
 620         if (!spec)
 621                 return 0;
 622         if (!mask)
 623                 mask = &rte_flow_item_vxlan_mask;
 624
 625         fm_data->fk_header_select |= FKH_VXLAN;
 626         fm_mask->fk_header_select |= FKH_VXLAN;
 627         memcpy(&fm_data->vxlan, spec, sizeof(*spec));
 628         memcpy(&fm_mask->vxlan, mask, sizeof(*mask));
 629         return 0;
 630 }
 631
 632 /*
 633  * Currently, raw pattern match is very limited. It is intended for matching
 634  * UDP tunnel header (e.g. vxlan or geneve).
 635  */
 636 static int
 637 enic_fm_copy_item_raw(struct copy_item_args *arg)
 638 {
 639         const struct rte_flow_item *item = arg->item;
 640         const struct rte_flow_item_raw *spec = item->spec;
 641         const struct rte_flow_item_raw *mask = item->mask;
 642         const uint8_t lvl = arg->header_level;
 643         struct fm_tcam_match_entry *entry = arg->fm_tcam_entry;
 644         struct fm_header_set *fm_data, *fm_mask;
 645
 646         ENICPMD_FUNC_TRACE();
 647         /* Cannot be used for inner packet */
 648         if (lvl > 0)
 649                 return -EINVAL;
 650         /* Need both spec and mask */
 651         if (!spec || !mask)
 652                 return -EINVAL;
 653         /* Only supports relative with offset 0 */
 654         if (!spec->relative || spec->offset != 0 || spec->search ||
 655             spec->limit)
 656                 return -EINVAL;
 657         /* Need non-null pattern that fits within the NIC's filter pattern */
 658         if (spec->length == 0 ||
 659             spec->length + sizeof(struct rte_udp_hdr) > FM_LAYER_SIZE ||
 660             !spec->pattern || !mask->pattern)
 661                 return -EINVAL;
 662         /*
 663          * Mask fields, including length, are often set to zero. Assume that
 664          * means "same as spec" to avoid breaking existing apps. If length
 665          * is not zero, then it should be >= spec length.
 666          *
 667          * No more pattern follows this, so append to the L4 layer instead of
 668          * L5 to work with both recent and older VICs.
 669          */
 670         if (mask->length != 0 && mask->length < spec->length)
 671                 return -EINVAL;
 672
 673         fm_data = &entry->ftm_data.fk_hdrset[lvl];
 674         fm_mask = &entry->ftm_mask.fk_hdrset[lvl];
 675         fm_data->fk_header_select |= FKH_L4RAW;
 676         fm_mask->fk_header_select |= FKH_L4RAW;
 677         fm_data->fk_header_select &= ~FKH_UDP;
 678         fm_mask->fk_header_select &= ~FKH_UDP;
 679         memcpy(fm_data->l4.rawdata + sizeof(struct rte_udp_hdr),
 680                spec->pattern, spec->length);
 681         memcpy(fm_mask->l4.rawdata + sizeof(struct rte_udp_hdr),
 682                mask->pattern, spec->length);
 683         return 0;
 684 }
 685
 686 static int
 687 flowman_cmd(struct enic_flowman *fm, uint64_t *args, int nargs)
 688 {
 689         return vnic_dev_flowman_cmd(fm->owner_enic->vdev, args, nargs);
 690 }
 691
 692 static int
 693 enic_fet_alloc(struct enic_flowman *fm, uint8_t ingress,
 694                struct fm_key_template *key, int entries,
 695                struct enic_fm_fet **fet_out)
 696 {
 697         struct fm_exact_match_table *cmd;
 698         struct fm_header_set *hdr;
 699         struct enic_fm_fet *fet;
 700         uint64_t args[3];
 701         int ret;
 702
 703         ENICPMD_FUNC_TRACE();
 704         fet = calloc(1, sizeof(struct enic_fm_fet));
 705         if (fet == NULL)
 706                 return -ENOMEM;
 707         cmd = &fm->cmd.va->fm_exact_match_table;
 708         memset(cmd, 0, sizeof(*cmd));
 709         cmd->fet_direction = ingress ? FM_INGRESS : FM_EGRESS;
 710         cmd->fet_stage = FM_STAGE_LAST;
 711         cmd->fet_max_entries = entries ? entries : FM_MAX_EXACT_TABLE_SIZE;
 712         if (key == NULL) {
 713                 hdr = &cmd->fet_key.fk_hdrset[0];
 714                 memset(hdr, 0, sizeof(*hdr));
 715                 hdr->fk_header_select = FKH_IPV4 | FKH_UDP;
 716                 hdr->l3.ip4.fk_saddr = 0xFFFFFFFF;
 717                 hdr->l3.ip4.fk_daddr = 0xFFFFFFFF;
 718                 hdr->l4.udp.fk_source = 0xFFFF;
 719                 hdr->l4.udp.fk_dest = 0xFFFF;
 720                 fet->default_key = 1;
 721         } else {
 722                 memcpy(&cmd->fet_key, key, sizeof(*key));
 723                 memcpy(&fet->key, key, sizeof(*key));
 724                 fet->default_key = 0;
 725         }
 726         cmd->fet_key.fk_packet_tag = 1;
 727
 728         args[0] = FM_EXACT_TABLE_ALLOC;
 729         args[1] = fm->cmd.pa;
 730         ret = flowman_cmd(fm, args, 2);
 731         if (ret) {
 732                 ENICPMD_LOG(ERR, "cannot alloc exact match table: rc=%d", ret);
 733                 free(fet);
 734                 return ret;
 735         }
 736         fet->handle = args[0];
 737         fet->ingress = ingress;
 738         ENICPMD_LOG(DEBUG, "allocated exact match table: handle=0x%" PRIx64,
 739                     fet->handle);
 740         *fet_out = fet;
 741         return 0;
 742 }
 743
 744 static void
 745 enic_fet_free(struct enic_flowman *fm, struct enic_fm_fet *fet)
 746 {
 747         ENICPMD_FUNC_TRACE();
 748         enic_fm_tbl_free(fm, fet->handle);
 749         if (!fet->default_key)
 750                 TAILQ_REMOVE(&fm->fet_list, fet, list);
 751         free(fet);
 752 }
 753
 754 /*
 755  * Get the exact match table for the given combination of
 756  * <group, ingress, key>. Allocate one on the fly as necessary.
 757  */
 758 static int
 759 enic_fet_get(struct enic_flowman *fm,
 760              uint32_t group,
 761              uint8_t ingress,
 762              struct fm_key_template *key,
 763              struct enic_fm_fet **fet_out,
 764              struct rte_flow_error *error)
 765 {
 766         struct enic_fm_fet *fet;
 767
 768         ENICPMD_FUNC_TRACE();
 769         /* See if we already have this table open */
 770         TAILQ_FOREACH(fet, &fm->fet_list, list) {
 771                 if (fet->group == group && fet->ingress == ingress)
 772                         break;
 773         }
 774         if (fet == NULL) {
 775                 /* Jumping to a non-existing group? Use the default table */
 776                 if (key == NULL) {
 777                         fet = ingress ? fm->default_ig_fet : fm->default_eg_fet;
 778                 } else if (enic_fet_alloc(fm, ingress, key, 0, &fet)) {
 779                         return rte_flow_error_set(error, EINVAL,
 780                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 781                                 NULL, "enic: cannot get exact match table");
 782                 }
 783                 fet->group = group;
 784                 /* Default table is never on the open table list */
 785                 if (!fet->default_key)
 786                         TAILQ_INSERT_HEAD(&fm->fet_list, fet, list);
 787         }
 788         fet->ref++;
 789         *fet_out = fet;
 790         ENICPMD_LOG(DEBUG, "fet_get: %s %s group=%u ref=%u",
 791                     fet->default_key ? "default" : "",
 792                     fet->ingress ? "ingress" : "egress",
 793                     fet->group, fet->ref);
 794         return 0;
 795 }
 796
 797 static void
 798 enic_fet_put(struct enic_flowman *fm, struct enic_fm_fet *fet)
 799 {
 800         ENICPMD_FUNC_TRACE();
 801         RTE_ASSERT(fet->ref > 0);
 802         fet->ref--;
 803         ENICPMD_LOG(DEBUG, "fet_put: %s %s group=%u ref=%u",
 804                     fet->default_key ? "default" : "",
 805                     fet->ingress ? "ingress" : "egress",
 806                     fet->group, fet->ref);
 807         if (fet->ref == 0)
 808                 enic_fet_free(fm, fet);
 809 }
 810
 811 /* Return 1 if current item is valid on top of the previous one. */
 812 static int
 813 fm_item_stacking_valid(enum rte_flow_item_type prev_item,
 814                        const struct enic_fm_items *item_info,
 815                        uint8_t is_first_item)
 816 {
 817         enum rte_flow_item_type const *allowed_items = item_info->prev_items;
 818
 819         ENICPMD_FUNC_TRACE();
 820         for (; *allowed_items != RTE_FLOW_ITEM_TYPE_END; allowed_items++) {
 821                 if (prev_item == *allowed_items)
 822                         return 1;
 823         }
 824
 825         /* This is the first item in the stack. Check if that's cool */
 826         if (is_first_item && item_info->valid_start_item)
 827                 return 1;
 828         return 0;
 829 }
 830
 831 /*
 832  * Build the flow manager match entry structure from the provided pattern.
 833  * The pattern is validated as the items are copied.
 834  */
 835 static int
 836 enic_fm_copy_entry(struct enic_flowman *fm,
 837                    const struct rte_flow_item pattern[],
 838                    struct rte_flow_error *error)
 839 {
 840         const struct enic_fm_items *item_info;
 841         enum rte_flow_item_type prev_item;
 842         const struct rte_flow_item *item;
 843         struct copy_item_args args;
 844         uint8_t prev_header_level;
 845         uint8_t is_first_item;
 846         int ret;
 847
 848         ENICPMD_FUNC_TRACE();
 849         item = pattern;
 850         is_first_item = 1;
 851         prev_item = RTE_FLOW_ITEM_TYPE_END;
 852
 853         args.fm_tcam_entry = &fm->tcam_entry;
 854         args.header_level = 0;
 855         prev_header_level = 0;
 856         for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
 857                 /*
 858                  * Get info about how to validate and copy the item. If NULL
 859                  * is returned the nic does not support the item.
 860                  */
 861                 if (item->type == RTE_FLOW_ITEM_TYPE_VOID)
 862                         continue;
 863
 864                 item_info = &enic_fm_items[item->type];
 865
 866                 if (item->type > FM_MAX_ITEM_TYPE ||
 867                     item_info->copy_item == NULL) {
 868                         return rte_flow_error_set(error, ENOTSUP,
 869                                 RTE_FLOW_ERROR_TYPE_ITEM,
 870                                 NULL, "enic: unsupported item");
 871                 }
 872
 873                 /* check to see if item stacking is valid */
 874                 if (!fm_item_stacking_valid(prev_item, item_info,
 875                                             is_first_item))
 876                         goto stacking_error;
 877
 878                 args.item = item;
 879                 ret = item_info->copy_item(&args);
 880                 if (ret)
 881                         goto item_not_supported;
 882                 /* Going from outer to inner? Treat it as a new packet start */
 883                 if (prev_header_level != args.header_level) {
 884                         prev_item = RTE_FLOW_ITEM_TYPE_END;
 885                         is_first_item = 1;
 886                 } else {
 887                         prev_item = item->type;
 888                         is_first_item = 0;
 889                 }
 890                 prev_header_level = args.header_level;
 891         }
 892         return 0;
 893
 894 item_not_supported:
 895         return rte_flow_error_set(error, -ret, RTE_FLOW_ERROR_TYPE_ITEM,
 896                                   NULL, "enic: unsupported item type");
 897
 898 stacking_error:
 899         return rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
 900                                   item, "enic: unsupported item stack");
 901 }
 902
 903 static void
 904 flow_item_skip_void(const struct rte_flow_item **item)
 905 {
 906         for ( ; ; (*item)++)
 907                 if ((*item)->type != RTE_FLOW_ITEM_TYPE_VOID)
 908                         return;
 909 }
 910
 911 static void
 912 append_template(void **template, uint8_t *off, const void *data, int len)
 913 {
 914         memcpy(*template, data, len);
 915         *template = (char *)*template + len;
 916         *off = *off + len;
 917 }
 918
 919 static int
 920 enic_fm_append_action_op(struct enic_flowman *fm,
 921                          struct fm_action_op *fm_op,
 922                          struct rte_flow_error *error)
 923 {
 924         int count;
 925
 926         count = fm->action_op_count;
 927         ENICPMD_LOG(DEBUG, "append action op: idx=%d op=%u",
 928                     count, fm_op->fa_op);
 929         if (count == FM_ACTION_OP_MAX) {
 930                 return rte_flow_error_set(error, EINVAL,
 931                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 932                         "too many action operations");
 933         }
 934         fm->action.fma_action_ops[count] = *fm_op;
 935         fm->action_op_count = count + 1;
 936         return 0;
 937 }
 938
 939 static struct fm_action_op *
 940 find_prev_action_op(struct enic_flowman *fm, uint32_t opcode)
 941 {
 942         struct fm_action_op *op;
 943         int i;
 944
 945         for (i = 0; i < fm->action_op_count; i++) {
 946                 op = &fm->action.fma_action_ops[i];
 947                 if (op->fa_op == opcode)
 948                         return op;
 949         }
 950         return NULL;
 951 }
 952
 953 /* NIC requires that 1st steer appear before decap.
 954  * Correct example: steer, decap, steer, steer, ...
 955  */
 956 static void
 957 enic_fm_reorder_action_op(struct enic_flowman *fm)
 958 {
 959         struct fm_action_op *op, *steer, *decap;
 960         struct fm_action_op tmp_op;
 961
 962         ENICPMD_FUNC_TRACE();
 963         /* Find 1st steer and decap */
 964         op = fm->action.fma_action_ops;
 965         steer = NULL;
 966         decap = NULL;
 967         while (op->fa_op != FMOP_END) {
 968                 if (!decap && (op->fa_op == FMOP_DECAP_NOSTRIP ||
 969                                op->fa_op == FMOP_DECAP_STRIP))
 970                         decap = op;
 971                 else if (!steer && op->fa_op == FMOP_RQ_STEER)
 972                         steer = op;
 973                 op++;
 974         }
 975         /* If decap is before steer, swap */
 976         if (steer && decap && decap < steer) {
 977                 op = fm->action.fma_action_ops;
 978                 ENICPMD_LOG(DEBUG, "swap decap %ld <-> steer %ld",
 979                             (long)(decap - op), (long)(steer - op));
 980                 tmp_op = *decap;
 981                 *decap = *steer;
 982                 *steer = tmp_op;
 983         }
 984 }
 985
 986 /* VXLAN decap is done via flowman compound action */
 987 static int
 988 enic_fm_copy_vxlan_decap(struct enic_flowman *fm,
 989                          struct fm_tcam_match_entry *fmt,
 990                          const struct rte_flow_action *action,
 991                          struct rte_flow_error *error)
 992 {
 993         struct fm_header_set *fm_data;
 994         struct fm_action_op fm_op;
 995
 996         ENICPMD_FUNC_TRACE();
 997         fm_data = &fmt->ftm_data.fk_hdrset[0];
 998         if (!(fm_data->fk_metadata & FKM_VXLAN)) {
 999                 return rte_flow_error_set(error, EINVAL,
1000                         RTE_FLOW_ERROR_TYPE_ACTION, action,
1001                         "vxlan-decap: vxlan must be in pattern");
1002         }
1003
1004         memset(&fm_op, 0, sizeof(fm_op));
1005         fm_op.fa_op = FMOP_DECAP_NOSTRIP;
1006         return enic_fm_append_action_op(fm, &fm_op, error);
1007 }
1008
1009 /* Generate a reasonable source port number */
1010 static uint16_t
1011 gen_src_port(void)
1012 {
1013         /* Min/max below are the default values in OVS-DPDK and Linux */
1014         uint16_t p = rte_rand();
1015         p = RTE_MAX(p, 32768);
1016         p = RTE_MIN(p, 61000);
1017         return rte_cpu_to_be_16(p);
1018 }
1019
1020 /* VXLAN encap is done via flowman compound action */
1021 static int
1022 enic_fm_copy_vxlan_encap(struct enic_flowman *fm,
1023                          const struct rte_flow_item *item,
1024                          struct rte_flow_error *error)
1025 {
1026         struct fm_action_op fm_op;
1027         struct rte_ether_hdr *eth;
1028         struct rte_udp_hdr *udp;
1029         uint16_t *ethertype;
1030         void *template;
1031         uint8_t off;
1032
1033         ENICPMD_FUNC_TRACE();
1034         memset(&fm_op, 0, sizeof(fm_op));
1035         fm_op.fa_op = FMOP_ENCAP;
1036         template = fm->action.fma_data;
1037         off = 0;
1038         /*
1039          * Copy flow items to the flowman template starting L2.
1040          * L2 must be ethernet.
1041          */
1042         flow_item_skip_void(&item);
1043         if (item->type != RTE_FLOW_ITEM_TYPE_ETH)
1044                 return rte_flow_error_set(error, EINVAL,
1045                         RTE_FLOW_ERROR_TYPE_ITEM, item,
1046                         "vxlan-encap: first item should be ethernet");
1047         eth = (struct rte_ether_hdr *)template;
1048         ethertype = &eth->ether_type;
1049         append_template(&template, &off, item->spec,
1050                         sizeof(struct rte_ether_hdr));
1051         item++;
1052         flow_item_skip_void(&item);
1053         /* Optional VLAN */
1054         if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
1055                 const struct rte_flow_item_vlan *spec;
1056
1057                 ENICPMD_LOG(DEBUG, "vxlan-encap: vlan");
1058                 spec = item->spec;
1059                 fm_op.encap.outer_vlan = rte_be_to_cpu_16(spec->tci);
1060                 item++;
1061                 flow_item_skip_void(&item);
1062         }
1063         /* L3 must be IPv4, IPv6 */
1064         switch (item->type) {
1065         case RTE_FLOW_ITEM_TYPE_IPV4:
1066         {
1067                 struct rte_ipv4_hdr *ip4;
1068
1069                 ENICPMD_LOG(DEBUG, "vxlan-encap: ipv4");
1070                 *ethertype = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4);
1071                 ip4 = (struct rte_ipv4_hdr *)template;
1072                 /*
1073                  * Offset of IPv4 length field and its initial value
1074                  * (IP + UDP + VXLAN) are specified in the action. The NIC
1075                  * will add inner packet length.
1076                  */
1077                 fm_op.encap.len1_offset = off +
1078                         offsetof(struct rte_ipv4_hdr, total_length);
1079                 fm_op.encap.len1_delta = sizeof(struct rte_ipv4_hdr) +
1080                         sizeof(struct rte_udp_hdr) +
1081                         sizeof(struct rte_vxlan_hdr);
1082                 append_template(&template, &off, item->spec,
1083                                 sizeof(struct rte_ipv4_hdr));
1084                 ip4->version_ihl = RTE_IPV4_VHL_DEF;
1085                 if (ip4->time_to_live == 0)
1086                         ip4->time_to_live = IP_DEFTTL;
1087                 ip4->next_proto_id = IPPROTO_UDP;
1088                 break;
1089         }
1090         case RTE_FLOW_ITEM_TYPE_IPV6:
1091         {
1092                 struct rte_ipv6_hdr *ip6;
1093
1094                 ENICPMD_LOG(DEBUG, "vxlan-encap: ipv6");
1095                 *ethertype = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6);
1096                 ip6 = (struct rte_ipv6_hdr *)template;
1097                 fm_op.encap.len1_offset = off +
1098                         offsetof(struct rte_ipv6_hdr, payload_len);
1099                 fm_op.encap.len1_delta = sizeof(struct rte_udp_hdr) +
1100                         sizeof(struct rte_vxlan_hdr);
1101                 append_template(&template, &off, item->spec,
1102                                 sizeof(struct rte_ipv6_hdr));
1103                 ip6->vtc_flow |= rte_cpu_to_be_32(IP6_VTC_FLOW);
1104                 if (ip6->hop_limits == 0)
1105                         ip6->hop_limits = IP_DEFTTL;
1106                 ip6->proto = IPPROTO_UDP;
1107                 break;
1108         }
1109         default:
1110                 return rte_flow_error_set(error,
1111                         EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, item,
1112                         "vxlan-encap: L3 must be IPv4/IPv6");
1113         }
1114         item++;
1115         flow_item_skip_void(&item);
1116
1117         /* L4 is UDP */
1118         if (item->type != RTE_FLOW_ITEM_TYPE_UDP)
1119                 return rte_flow_error_set(error, EINVAL,
1120                         RTE_FLOW_ERROR_TYPE_ITEM, item,
1121                         "vxlan-encap: UDP must follow IPv4/IPv6");
1122         /* UDP length = UDP + VXLAN. NIC will add inner packet length. */
1123         fm_op.encap.len2_offset =
1124                 off + offsetof(struct rte_udp_hdr, dgram_len);
1125         fm_op.encap.len2_delta =
1126                 sizeof(struct rte_udp_hdr) + sizeof(struct rte_vxlan_hdr);
1127         udp = (struct rte_udp_hdr *)template;
1128         append_template(&template, &off, item->spec,
1129                         sizeof(struct rte_udp_hdr));
1130         /*
1131          * Firmware does not hash/fill source port yet. Generate a
1132          * random port, as there is *usually* one rte_flow for the
1133          * given inner packet stream (i.e. a single stream has one
1134          * random port).
1135          */
1136         if (udp->src_port == 0)
1137                 udp->src_port = gen_src_port();
1138         item++;
1139         flow_item_skip_void(&item);
1140
1141         /* Finally VXLAN */
1142         if (item->type != RTE_FLOW_ITEM_TYPE_VXLAN)
1143                 return rte_flow_error_set(error,
1144                         EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, item,
1145                         "vxlan-encap: VXLAN must follow UDP");
1146         append_template(&template, &off, item->spec,
1147                         sizeof(struct rte_flow_item_vxlan));
1148
1149         /*
1150          * Fill in the rest of the action structure.
1151          * Indicate that we want to encap with vxlan at packet start.
1152          */
1153         fm_op.encap.template_offset = 0;
1154         fm_op.encap.template_len = off;
1155         return enic_fm_append_action_op(fm, &fm_op, error);
1156 }
1157
1158 static int
1159 enic_fm_find_vnic(struct enic *enic, const struct rte_pci_addr *addr,
1160                   uint64_t *handle)
1161 {
1162         uint32_t bdf;
1163         uint64_t args[2];
1164         int rc;
1165
1166         ENICPMD_FUNC_TRACE();
1167         ENICPMD_LOG(DEBUG, "bdf=%x:%x:%x", addr->bus, addr->devid,
1168                     addr->function);
1169         bdf = addr->bus << 8 | addr->devid << 3 | addr->function;
1170         args[0] = FM_VNIC_FIND;
1171         args[1] = bdf;
1172         rc = vnic_dev_flowman_cmd(enic->vdev, args, 2);
1173         if (rc != 0) {
1174                 /* Expected to fail if BDF is not on the adapter */
1175                 ENICPMD_LOG(DEBUG, "cannot find vnic handle: rc=%d", rc);
1176                 return rc;
1177         }
1178         *handle = args[0];
1179         ENICPMD_LOG(DEBUG, "found vnic: handle=0x%" PRIx64, *handle);
1180         return 0;
1181 }
1182
1183 /*
1184  * Egress: target port should be either PF uplink or VF.
1185  * Supported cases
1186  * 1. VF egress -> PF uplink
1187  *   PF may be this VF's PF, or another PF, as long as they are on the same VIC.
1188  * 2. VF egress -> VF
1189  *
1190  * Unsupported cases
1191  * 1. PF egress -> VF
1192  *   App should be using representor to pass packets to VF
1193  */
1194 static int
1195 vf_egress_port_id_action(struct enic_flowman *fm,
1196                          struct rte_eth_dev *dst_dev,
1197                          uint64_t dst_vnic_h,
1198                          struct fm_action_op *fm_op,
1199                          struct rte_flow_error *error)
1200 {
1201         struct enic *src_enic, *dst_enic;
1202         struct enic_vf_representor *vf;
1203         uint8_t uif;
1204         int ret;
1205
1206         ENICPMD_FUNC_TRACE();
1207         src_enic = fm->user_enic;
1208         dst_enic = pmd_priv(dst_dev);
1209         if (!(src_enic->rte_dev->data->dev_flags & RTE_ETH_DEV_REPRESENTOR)) {
1210                 return rte_flow_error_set(error, EINVAL,
1211                         RTE_FLOW_ERROR_TYPE_ACTION,
1212                         NULL, "source port is not VF representor");
1213         }
1214
1215         /* VF -> PF uplink. dst is not VF representor */
1216         if (!(dst_dev->data->dev_flags & RTE_ETH_DEV_REPRESENTOR)) {
1217                 /* PF is the VF's PF? Then nothing to do */
1218                 vf = VF_ENIC_TO_VF_REP(src_enic);
1219                 if (vf->pf == dst_enic) {
1220                         ENICPMD_LOG(DEBUG, "destination port is VF's PF");
1221                         return 0;
1222                 }
1223                 /* If not, steer to the remote PF's uplink */
1224                 uif = dst_enic->fm_vnic_uif;
1225                 ENICPMD_LOG(DEBUG, "steer to uplink %u", uif);
1226                 memset(fm_op, 0, sizeof(*fm_op));
1227                 fm_op->fa_op = FMOP_SET_EGPORT;
1228                 fm_op->set_egport.egport = uif;
1229                 ret = enic_fm_append_action_op(fm, fm_op, error);
1230                 return ret;
1231         }
1232
1233         /* VF -> VF loopback. Hairpin and steer to vnic */
1234         memset(fm_op, 0, sizeof(*fm_op));
1235         fm_op->fa_op = FMOP_EG_HAIRPIN;
1236         ret = enic_fm_append_action_op(fm, fm_op, error);
1237         if (ret)
1238                 return ret;
1239         ENICPMD_LOG(DEBUG, "egress hairpin");
1240         fm->hairpin_steer_vnic_h = dst_vnic_h;
1241         fm->need_hairpin_steer = 1;
1242         return 0;
1243 }
1244
1245 /* Translate flow actions to flowman TCAM entry actions */
1246 static int
1247 enic_fm_copy_action(struct enic_flowman *fm,
1248                     const struct rte_flow_action actions[],
1249                     uint8_t ingress,
1250                     struct rte_flow_error *error)
1251 {
1252         enum {
1253                 FATE = 1 << 0,
1254                 DECAP = 1 << 1,
1255                 PASSTHRU = 1 << 2,
1256                 COUNT = 1 << 3,
1257                 ENCAP = 1 << 4,
1258                 PUSH_VLAN = 1 << 5,
1259                 PORT_ID = 1 << 6,
1260         };
1261         struct fm_tcam_match_entry *fmt;
1262         struct fm_action_op fm_op;
1263         bool need_ovlan_action;
1264         struct enic *enic;
1265         uint32_t overlap;
1266         uint64_t vnic_h;
1267         uint16_t ovlan;
1268         bool first_rq;
1269         bool steer;
1270         int ret;
1271
1272         ENICPMD_FUNC_TRACE();
1273         fmt = &fm->tcam_entry;
1274         need_ovlan_action = false;
1275         ovlan = 0;
1276         first_rq = true;
1277         steer = false;
1278         enic = fm->user_enic;
1279         overlap = 0;
1280         vnic_h = enic->fm_vnic_handle;
1281
1282         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1283                 switch (actions->type) {
1284                 case RTE_FLOW_ACTION_TYPE_VOID:
1285                         continue;
1286                 case RTE_FLOW_ACTION_TYPE_PASSTHRU: {
1287                         if (overlap & PASSTHRU)
1288                                 goto unsupported;
1289                         overlap |= PASSTHRU;
1290                         break;
1291                 }
1292                 case RTE_FLOW_ACTION_TYPE_JUMP: {
1293                         const struct rte_flow_action_jump *jump =
1294                                 actions->conf;
1295                         struct enic_fm_fet *fet;
1296
1297                         if (overlap & FATE)
1298                                 goto unsupported;
1299                         ret = enic_fet_get(fm, jump->group, ingress, NULL,
1300                                            &fet, error);
1301                         if (ret)
1302                                 return ret;
1303                         overlap |= FATE;
1304                         memset(&fm_op, 0, sizeof(fm_op));
1305                         fm_op.fa_op = FMOP_EXACT_MATCH;
1306                         fm_op.exact.handle = fet->handle;
1307                         fm->fet = fet;
1308                         ret = enic_fm_append_action_op(fm, &fm_op, error);
1309                         if (ret)
1310                                 return ret;
1311                         break;
1312                 }
1313                 case RTE_FLOW_ACTION_TYPE_MARK: {
1314                         const struct rte_flow_action_mark *mark =
1315                                 actions->conf;
1316
1317                         if (enic->use_noscatter_vec_rx_handler)
1318                                 goto unsupported;
1319                         if (mark->id >= ENIC_MAGIC_FILTER_ID - 1)
1320                                 return rte_flow_error_set(error, EINVAL,
1321                                         RTE_FLOW_ERROR_TYPE_ACTION,
1322                                         NULL, "invalid mark id");
1323                         memset(&fm_op, 0, sizeof(fm_op));
1324                         fm_op.fa_op = FMOP_MARK;
1325                         fm_op.mark.mark = mark->id + 1;
1326                         ret = enic_fm_append_action_op(fm, &fm_op, error);
1327                         if (ret)
1328                                 return ret;
1329                         break;
1330                 }
1331                 case RTE_FLOW_ACTION_TYPE_FLAG: {
1332                         if (enic->use_noscatter_vec_rx_handler)
1333                                 goto unsupported;
1334                         /* ENIC_MAGIC_FILTER_ID is reserved for flagging */
1335                         memset(&fm_op, 0, sizeof(fm_op));
1336                         fm_op.fa_op = FMOP_MARK;
1337                         fm_op.mark.mark = ENIC_MAGIC_FILTER_ID;
1338                         ret = enic_fm_append_action_op(fm, &fm_op, error);
1339                         if (ret)
1340                                 return ret;
1341                         break;
1342                 }
1343                 case RTE_FLOW_ACTION_TYPE_QUEUE: {
1344                         const struct rte_flow_action_queue *queue =
1345                                 actions->conf;
1346
1347                         /*
1348                          * If fate other than QUEUE or RSS, fail. Multiple
1349                          * rss and queue actions are ok.
1350                          */
1351                         if ((overlap & FATE) && first_rq)
1352                                 goto unsupported;
1353                         first_rq = false;
1354                         overlap |= FATE;
1355                         memset(&fm_op, 0, sizeof(fm_op));
1356                         fm_op.fa_op = FMOP_RQ_STEER;
1357                         fm_op.rq_steer.rq_index =
1358                                 enic_rte_rq_idx_to_sop_idx(queue->index);
1359                         fm_op.rq_steer.rq_count = 1;
1360                         fm_op.rq_steer.vnic_handle = vnic_h;
1361                         ret = enic_fm_append_action_op(fm, &fm_op, error);
1362                         if (ret)
1363                                 return ret;
1364                         ENICPMD_LOG(DEBUG, "create QUEUE action rq: %u",
1365                                     fm_op.rq_steer.rq_index);
1366                         steer = true;
1367                         break;
1368                 }
1369                 case RTE_FLOW_ACTION_TYPE_DROP: {
1370                         if (overlap & FATE)
1371                                 goto unsupported;
1372                         overlap |= FATE;
1373                         memset(&fm_op, 0, sizeof(fm_op));
1374                         fm_op.fa_op = FMOP_DROP;
1375                         ret = enic_fm_append_action_op(fm, &fm_op, error);
1376                         if (ret)
1377                                 return ret;
1378                         ENICPMD_LOG(DEBUG, "create DROP action");
1379                         break;
1380                 }
1381                 case RTE_FLOW_ACTION_TYPE_COUNT: {
1382                         if (overlap & COUNT)
1383                                 goto unsupported;
1384                         overlap |= COUNT;
1385                         /* Count is associated with entry not action on VIC. */
1386                         fmt->ftm_flags |= FMEF_COUNTER;
1387                         break;
1388                 }
1389                 case RTE_FLOW_ACTION_TYPE_RSS: {
1390                         const struct rte_flow_action_rss *rss = actions->conf;
1391                         bool allow;
1392                         uint16_t i;
1393
1394                         /*
1395                          * If fate other than QUEUE or RSS, fail. Multiple
1396                          * rss and queue actions are ok.
1397                          */
1398                         if ((overlap & FATE) && first_rq)
1399                                 goto unsupported;
1400                         first_rq = false;
1401                         overlap |= FATE;
1402
1403                         /*
1404                          * Hardware only supports RSS actions on outer level
1405                          * with default type and function. Queues must be
1406                          * sequential.
1407                          */
1408                         allow = rss->func == RTE_ETH_HASH_FUNCTION_DEFAULT &&
1409                                 rss->level == 0 && (rss->types == 0 ||
1410                                 rss->types == enic->rss_hf) &&
1411                                 rss->queue_num <= enic->rq_count &&
1412                                 rss->queue[rss->queue_num - 1] < enic->rq_count;
1413
1414
1415                         /* Identity queue map needs to be sequential */
1416                         for (i = 1; i < rss->queue_num; i++)
1417                                 allow = allow && (rss->queue[i] ==
1418                                         rss->queue[i - 1] + 1);
1419                         if (!allow)
1420                                 goto unsupported;
1421
1422                         memset(&fm_op, 0, sizeof(fm_op));
1423                         fm_op.fa_op = FMOP_RQ_STEER;
1424                         fm_op.rq_steer.rq_index =
1425                                 enic_rte_rq_idx_to_sop_idx(rss->queue[0]);
1426                         fm_op.rq_steer.rq_count = rss->queue_num;
1427                         fm_op.rq_steer.vnic_handle = vnic_h;
1428                         ret = enic_fm_append_action_op(fm, &fm_op, error);
1429                         if (ret)
1430                                 return ret;
1431                         ENICPMD_LOG(DEBUG, "create QUEUE action rq: %u",
1432                                     fm_op.rq_steer.rq_index);
1433                         steer = true;
1434                         break;
1435                 }
1436                 case RTE_FLOW_ACTION_TYPE_PORT_ID: {
1437                         const struct rte_flow_action_port_id *port;
1438                         struct rte_eth_dev *dev;
1439
1440                         if (!ingress && (overlap & PORT_ID)) {
1441                                 ENICPMD_LOG(DEBUG, "cannot have multiple egress PORT_ID actions");
1442                                 goto unsupported;
1443                         }
1444                         port = actions->conf;
1445                         if (port->original) {
1446                                 vnic_h = enic->fm_vnic_handle; /* This port */
1447                                 break;
1448                         }
1449                         ENICPMD_LOG(DEBUG, "port id %u", port->id);
1450                         if (!rte_eth_dev_is_valid_port(port->id)) {
1451                                 return rte_flow_error_set(error, EINVAL,
1452                                         RTE_FLOW_ERROR_TYPE_ACTION,
1453                                         NULL, "invalid port_id");
1454                         }
1455                         dev = &rte_eth_devices[port->id];
1456                         if (!dev_is_enic(dev)) {
1457                                 return rte_flow_error_set(error, EINVAL,
1458                                         RTE_FLOW_ERROR_TYPE_ACTION,
1459                                         NULL, "port_id is not enic");
1460                         }
1461                         if (enic->switch_domain_id !=
1462                             pmd_priv(dev)->switch_domain_id) {
1463                                 return rte_flow_error_set(error, EINVAL,
1464                                         RTE_FLOW_ERROR_TYPE_ACTION,
1465                                         NULL, "destination and source ports are not in the same switch domain");
1466                         }
1467                         vnic_h = pmd_priv(dev)->fm_vnic_handle;
1468                         overlap |= PORT_ID;
1469                         /*
1470                          * Ingress. Nothing more to do. We add an implicit
1471                          * steer at the end if needed.
1472                          */
1473                         if (ingress)
1474                                 break;
1475                         /* Egress */
1476                         ret = vf_egress_port_id_action(fm, dev, vnic_h, &fm_op,
1477                                 error);
1478                         if (ret)
1479                                 return ret;
1480                         break;
1481                 }
1482                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP: {
1483                         if (overlap & DECAP)
1484                                 goto unsupported;
1485                         overlap |= DECAP;
1486
1487                         ret = enic_fm_copy_vxlan_decap(fm, fmt, actions,
1488                                 error);
1489                         if (ret != 0)
1490                                 return ret;
1491                         break;
1492                 }
1493                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP: {
1494                         const struct rte_flow_action_vxlan_encap *encap;
1495
1496                         encap = actions->conf;
1497                         if (overlap & ENCAP)
1498                                 goto unsupported;
1499                         overlap |= ENCAP;
1500                         ret = enic_fm_copy_vxlan_encap(fm, encap->definition,
1501                                 error);
1502                         if (ret != 0)
1503                                 return ret;
1504                         break;
1505                 }
1506                 case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN: {
1507                         struct fm_action_op *decap;
1508
1509                         /*
1510                          * If decap-nostrip appears before pop vlan, this pop
1511                          * applies to the inner packet vlan. Turn it into
1512                          * decap-strip.
1513                          */
1514                         decap = find_prev_action_op(fm, FMOP_DECAP_NOSTRIP);
1515                         if (decap) {
1516                                 ENICPMD_LOG(DEBUG, "pop-vlan inner: decap-nostrip => decap-strip");
1517                                 decap->fa_op = FMOP_DECAP_STRIP;
1518                                 break;
1519                         }
1520                         memset(&fm_op, 0, sizeof(fm_op));
1521                         fm_op.fa_op = FMOP_POP_VLAN;
1522                         ret = enic_fm_append_action_op(fm, &fm_op, error);
1523                         if (ret)
1524                                 return ret;
1525                         break;
1526                 }
1527                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN: {
1528                         const struct rte_flow_action_of_push_vlan *vlan;
1529
1530                         if (overlap & PASSTHRU)
1531                                 goto unsupported;
1532                         vlan = actions->conf;
1533                         if (vlan->ethertype != RTE_BE16(RTE_ETHER_TYPE_VLAN)) {
1534                                 return rte_flow_error_set(error, EINVAL,
1535                                         RTE_FLOW_ERROR_TYPE_ACTION,
1536                                         NULL, "unexpected push_vlan ethertype");
1537                         }
1538                         overlap |= PUSH_VLAN;
1539                         need_ovlan_action = true;
1540                         break;
1541                 }
1542                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP: {
1543                         const struct rte_flow_action_of_set_vlan_pcp *pcp;
1544
1545                         pcp = actions->conf;
1546                         if (pcp->vlan_pcp > 7) {
1547                                 return rte_flow_error_set(error, EINVAL,
1548                                         RTE_FLOW_ERROR_TYPE_ACTION,
1549                                         NULL, "invalid vlan_pcp");
1550                         }
1551                         need_ovlan_action = true;
1552                         ovlan |= ((uint16_t)pcp->vlan_pcp) << 13;
1553                         break;
1554                 }
1555                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID: {
1556                         const struct rte_flow_action_of_set_vlan_vid *vid;
1557
1558                         vid = actions->conf;
1559                         need_ovlan_action = true;
1560                         ovlan |= rte_be_to_cpu_16(vid->vlan_vid);
1561                         break;
1562                 }
1563                 default:
1564                         goto unsupported;
1565                 }
1566         }
1567
1568         if (!(overlap & (FATE | PASSTHRU | COUNT | PORT_ID)))
1569                 goto unsupported;
1570         /* Egress from VF: need implicit WQ match */
1571         if (enic_is_vf_rep(enic) && !ingress) {
1572                 fmt->ftm_data.fk_wq_id = 0;
1573                 fmt->ftm_mask.fk_wq_id = 0xffff;
1574                 fmt->ftm_data.fk_wq_vnic = enic->fm_vnic_handle;
1575                 ENICPMD_LOG(DEBUG, "add implicit wq id match for vf %d",
1576                             VF_ENIC_TO_VF_REP(enic)->vf_id);
1577         }
1578         if (need_ovlan_action) {
1579                 memset(&fm_op, 0, sizeof(fm_op));
1580                 fm_op.fa_op = FMOP_SET_OVLAN;
1581                 fm_op.ovlan.vlan = ovlan;
1582                 ret = enic_fm_append_action_op(fm, &fm_op, error);
1583                 if (ret)
1584                         return ret;
1585         }
1586         /* Add steer op for PORT_ID without QUEUE */
1587         if ((overlap & PORT_ID) && !steer && ingress) {
1588                 memset(&fm_op, 0, sizeof(fm_op));
1589                 /* Always to queue 0 for now as generic RSS is not available */
1590                 fm_op.fa_op = FMOP_RQ_STEER;
1591                 fm_op.rq_steer.rq_index = 0;
1592                 fm_op.rq_steer.vnic_handle = vnic_h;
1593                 ret = enic_fm_append_action_op(fm, &fm_op, error);
1594                 if (ret)
1595                         return ret;
1596                 ENICPMD_LOG(DEBUG, "add implicit steer op");
1597         }
1598         /* Add required END */
1599         memset(&fm_op, 0, sizeof(fm_op));
1600         fm_op.fa_op = FMOP_END;
1601         ret = enic_fm_append_action_op(fm, &fm_op, error);
1602         if (ret)
1603                 return ret;
1604         enic_fm_reorder_action_op(fm);
1605         return 0;
1606
1607 unsupported:
1608         return rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
1609                                   NULL, "enic: unsupported action");
1610 }
1611
1612 /** Check if the action is supported */
1613 static int
1614 enic_fm_match_action(const struct rte_flow_action *action,
1615                      const enum rte_flow_action_type *supported_actions)
1616 {
1617         for (; *supported_actions != RTE_FLOW_ACTION_TYPE_END;
1618              supported_actions++) {
1619                 if (action->type == *supported_actions)
1620                         return 1;
1621         }
1622         return 0;
1623 }
1624
1625 /* Debug function to dump internal NIC action structure. */
1626 static void
1627 enic_fm_dump_tcam_actions(const struct fm_action *fm_action)
1628 {
1629         /* Manually keep in sync with FMOP commands */
1630         const char *fmop_str[FMOP_OP_MAX] = {
1631                 [FMOP_END] = "end",
1632                 [FMOP_DROP] = "drop",
1633                 [FMOP_RQ_STEER] = "steer",
1634                 [FMOP_EXACT_MATCH] = "exmatch",
1635                 [FMOP_MARK] = "mark",
1636                 [FMOP_EXT_MARK] = "ext_mark",
1637                 [FMOP_TAG] = "tag",
1638                 [FMOP_EG_HAIRPIN] = "eg_hairpin",
1639                 [FMOP_IG_HAIRPIN] = "ig_hairpin",
1640                 [FMOP_ENCAP_IVLAN] = "encap_ivlan",
1641                 [FMOP_ENCAP_NOIVLAN] = "encap_noivlan",
1642                 [FMOP_ENCAP] = "encap",
1643                 [FMOP_SET_OVLAN] = "set_ovlan",
1644                 [FMOP_DECAP_NOSTRIP] = "decap_nostrip",
1645                 [FMOP_DECAP_STRIP] = "decap_strip",
1646                 [FMOP_POP_VLAN] = "pop_vlan",
1647                 [FMOP_SET_EGPORT] = "set_egport",
1648                 [FMOP_RQ_STEER_ONLY] = "rq_steer_only",
1649                 [FMOP_SET_ENCAP_VLAN] = "set_encap_vlan",
1650                 [FMOP_EMIT] = "emit",
1651                 [FMOP_MODIFY] = "modify",
1652         };
1653         const struct fm_action_op *op = &fm_action->fma_action_ops[0];
1654         char buf[128], *bp = buf;
1655         const char *op_str;
1656         int i, n, buf_len;
1657
1658         buf[0] = '\0';
1659         buf_len = sizeof(buf);
1660         for (i = 0; i < FM_ACTION_OP_MAX; i++) {
1661                 if (op->fa_op == FMOP_END)
1662                         break;
1663                 if (op->fa_op >= FMOP_OP_MAX)
1664                         op_str = "unknown";
1665                 else
1666                         op_str = fmop_str[op->fa_op];
1667                 n = snprintf(bp, buf_len, "%s,", op_str);
1668                 if (n > 0 && n < buf_len) {
1669                         bp += n;
1670                         buf_len -= n;
1671                 }
1672                 op++;
1673         }
1674         /* Remove trailing comma */
1675         if (buf[0])
1676                 *(bp - 1) = '\0';
1677         ENICPMD_LOG(DEBUG, "       Acions: %s", buf);
1678 }
1679
1680 static int
1681 bits_to_str(uint32_t bits, const char *strings[], int max,
1682             char *buf, int buf_len)
1683 {
1684         int i, n = 0, len = 0;
1685
1686         for (i = 0; i < max; i++) {
1687                 if (bits & (1 << i)) {
1688                         n = snprintf(buf, buf_len, "%s,", strings[i]);
1689                         if (n > 0 && n < buf_len) {
1690                                 buf += n;
1691                                 buf_len -= n;
1692                                 len += n;
1693                         }
1694                 }
1695         }
1696         /* Remove trailing comma */
1697         if (len) {
1698                 *(buf - 1) = '\0';
1699                 len--;
1700         }
1701         return len;
1702 }
1703
1704 /* Debug function to dump internal NIC filter structure. */
1705 static void
1706 __enic_fm_dump_tcam_match(const struct fm_header_set *fk_hdrset, char *buf,
1707                           int buf_len)
1708 {
1709         /* Manually keep in sync with FKM_BITS */
1710         const char *fm_fkm_str[FKM_BIT_COUNT] = {
1711                 [FKM_QTAG_BIT] = "qtag",
1712                 [FKM_CMD_BIT] = "cmd",
1713                 [FKM_IPV4_BIT] = "ip4",
1714                 [FKM_IPV6_BIT] = "ip6",
1715                 [FKM_ROCE_BIT] = "roce",
1716                 [FKM_UDP_BIT] = "udp",
1717                 [FKM_TCP_BIT] = "tcp",
1718                 [FKM_TCPORUDP_BIT] = "tcpportudp",
1719                 [FKM_IPFRAG_BIT] = "ipfrag",
1720                 [FKM_NVGRE_BIT] = "nvgre",
1721                 [FKM_VXLAN_BIT] = "vxlan",
1722                 [FKM_GENEVE_BIT] = "geneve",
1723                 [FKM_NSH_BIT] = "nsh",
1724                 [FKM_ROCEV2_BIT] = "rocev2",
1725                 [FKM_VLAN_PRES_BIT] = "vlan_pres",
1726                 [FKM_IPOK_BIT] = "ipok",
1727                 [FKM_L4OK_BIT] = "l4ok",
1728                 [FKM_ROCEOK_BIT] = "roceok",
1729                 [FKM_FCSOK_BIT] = "fcsok",
1730                 [FKM_EG_SPAN_BIT] = "eg_span",
1731                 [FKM_IG_SPAN_BIT] = "ig_span",
1732                 [FKM_EG_HAIRPINNED_BIT] = "eg_hairpinned",
1733         };
1734         /* Manually keep in sync with FKH_BITS */
1735         const char *fm_fkh_str[FKH_BIT_COUNT] = {
1736                 [FKH_ETHER_BIT] = "eth",
1737                 [FKH_QTAG_BIT] = "qtag",
1738                 [FKH_L2RAW_BIT] = "l2raw",
1739                 [FKH_IPV4_BIT] = "ip4",
1740                 [FKH_IPV6_BIT] = "ip6",
1741                 [FKH_L3RAW_BIT] = "l3raw",
1742                 [FKH_UDP_BIT] = "udp",
1743                 [FKH_TCP_BIT] = "tcp",
1744                 [FKH_ICMP_BIT] = "icmp",
1745                 [FKH_VXLAN_BIT] = "vxlan",
1746                 [FKH_L4RAW_BIT] = "l4raw",
1747         };
1748         uint32_t fkh_bits = fk_hdrset->fk_header_select;
1749         uint32_t fkm_bits = fk_hdrset->fk_metadata;
1750         int n;
1751
1752         if (!fkm_bits && !fkh_bits)
1753                 return;
1754         n = snprintf(buf, buf_len, "metadata(");
1755         if (n > 0 && n < buf_len) {
1756                 buf += n;
1757                 buf_len -= n;
1758         }
1759         n = bits_to_str(fkm_bits, fm_fkm_str, FKM_BIT_COUNT, buf, buf_len);
1760         if (n > 0 && n < buf_len) {
1761                 buf += n;
1762                 buf_len -= n;
1763         }
1764         n = snprintf(buf, buf_len, ") valid hdr fields(");
1765         if (n > 0 && n < buf_len) {
1766                 buf += n;
1767                 buf_len -= n;
1768         }
1769         n = bits_to_str(fkh_bits, fm_fkh_str, FKH_BIT_COUNT, buf, buf_len);
1770         if (n > 0 && n < buf_len) {
1771                 buf += n;
1772                 buf_len -= n;
1773         }
1774         snprintf(buf, buf_len, ")");
1775 }
1776
1777 static void
1778 enic_fm_dump_tcam_match(const struct fm_tcam_match_entry *match,
1779                         uint8_t ingress)
1780 {
1781         char buf[256];
1782
1783         memset(buf, 0, sizeof(buf));
1784         __enic_fm_dump_tcam_match(&match->ftm_mask.fk_hdrset[0],
1785                                   buf, sizeof(buf));
1786         ENICPMD_LOG(DEBUG, " TCAM %s Outer: %s %scounter position %u",
1787                     (ingress) ? "IG" : "EG", buf,
1788                     (match->ftm_flags & FMEF_COUNTER) ? "" : "no ",
1789                     match->ftm_position);
1790         memset(buf, 0, sizeof(buf));
1791         __enic_fm_dump_tcam_match(&match->ftm_mask.fk_hdrset[1],
1792                                   buf, sizeof(buf));
1793         if (buf[0])
1794                 ENICPMD_LOG(DEBUG, "         Inner: %s", buf);
1795 }
1796
1797 /* Debug function to dump internal NIC flow structures. */
1798 static void
1799 enic_fm_dump_tcam_entry(const struct fm_tcam_match_entry *fm_match,
1800                         const struct fm_action *fm_action,
1801                         uint8_t ingress)
1802 {
1803         if (!rte_log_can_log(enic_pmd_logtype, RTE_LOG_DEBUG))
1804                 return;
1805         enic_fm_dump_tcam_match(fm_match, ingress);
1806         enic_fm_dump_tcam_actions(fm_action);
1807 }
1808
1809 static int
1810 enic_fm_flow_parse(struct enic_flowman *fm,
1811                    const struct rte_flow_attr *attrs,
1812                    const struct rte_flow_item pattern[],
1813                    const struct rte_flow_action actions[],
1814                    struct rte_flow_error *error)
1815 {
1816         const struct rte_flow_action *action;
1817         unsigned int ret;
1818         static const enum rte_flow_action_type *sa;
1819
1820         ENICPMD_FUNC_TRACE();
1821         ret = 0;
1822         if (!pattern) {
1823                 rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_NUM,
1824                                    NULL, "no pattern specified");
1825                 return -rte_errno;
1826         }
1827
1828         if (!actions) {
1829                 rte_flow_error_set(error, EINVAL,
1830                                    RTE_FLOW_ERROR_TYPE_ACTION_NUM,
1831                                    NULL, "no action specified");
1832                 return -rte_errno;
1833         }
1834
1835         if (attrs) {
1836                 if (attrs->group != FM_TCAM_RTE_GROUP && attrs->priority) {
1837                         rte_flow_error_set(error, ENOTSUP,
1838                                            RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1839                                            NULL,
1840                                            "priorities are not supported for non-default (0) groups");
1841                         return -rte_errno;
1842                 } else if (!fm->owner_enic->switchdev_mode && attrs->transfer) {
1843                         rte_flow_error_set(error, ENOTSUP,
1844                                            RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1845                                            NULL,
1846                                            "transfer is not supported");
1847                         return -rte_errno;
1848                 } else if (attrs->ingress && attrs->egress) {
1849                         rte_flow_error_set(error, ENOTSUP,
1850                                            RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1851                                            NULL,
1852                                            "bidirectional rules not supported");
1853                         return -rte_errno;
1854                 }
1855
1856         } else {
1857                 rte_flow_error_set(error, EINVAL,
1858                                    RTE_FLOW_ERROR_TYPE_ATTR,
1859                                    NULL, "no attribute specified");
1860                 return -rte_errno;
1861         }
1862
1863         /* Verify Actions. */
1864         sa = (attrs->ingress) ? enic_fm_supported_ig_actions :
1865              enic_fm_supported_eg_actions;
1866         for (action = &actions[0]; action->type != RTE_FLOW_ACTION_TYPE_END;
1867              action++) {
1868                 if (action->type == RTE_FLOW_ACTION_TYPE_VOID)
1869                         continue;
1870                 else if (!enic_fm_match_action(action, sa))
1871                         break;
1872         }
1873         if (action->type != RTE_FLOW_ACTION_TYPE_END) {
1874                 rte_flow_error_set(error, EPERM, RTE_FLOW_ERROR_TYPE_ACTION,
1875                                    action, "invalid action");
1876                 return -rte_errno;
1877         }
1878         ret = enic_fm_copy_entry(fm, pattern, error);
1879         if (ret)
1880                 return ret;
1881         ret = enic_fm_copy_action(fm, actions, attrs->ingress, error);
1882         return ret;
1883 }
1884
1885 static void
1886 enic_fm_counter_free(struct enic_flowman *fm, struct enic_fm_flow *fm_flow)
1887 {
1888         if (!fm_flow->counter_valid)
1889                 return;
1890         SLIST_INSERT_HEAD(&fm->counters, fm_flow->counter, next);
1891         fm_flow->counter_valid = false;
1892 }
1893
1894 static int
1895 enic_fm_more_counters(struct enic_flowman *fm)
1896 {
1897         struct enic_fm_counter *new_stack;
1898         struct enic_fm_counter *ctrs;
1899         int i, rc;
1900         uint64_t args[2];
1901
1902         ENICPMD_FUNC_TRACE();
1903         new_stack = rte_realloc(fm->counter_stack, (fm->counters_alloced +
1904                                 FM_COUNTERS_EXPAND) *
1905                                 sizeof(struct enic_fm_counter), 0);
1906         if (new_stack == NULL) {
1907                 ENICPMD_LOG(ERR, "cannot alloc counter memory");
1908                 return -ENOMEM;
1909         }
1910         fm->counter_stack = new_stack;
1911
1912         args[0] = FM_COUNTER_BRK;
1913         args[1] = fm->counters_alloced + FM_COUNTERS_EXPAND;
1914         rc = flowman_cmd(fm, args, 2);
1915         if (rc != 0) {
1916                 ENICPMD_LOG(ERR, "cannot alloc counters rc=%d", rc);
1917                 return rc;
1918         }
1919         ctrs = (struct enic_fm_counter *)fm->counter_stack +
1920                 fm->counters_alloced;
1921         for (i = 0; i < FM_COUNTERS_EXPAND; i++, ctrs++) {
1922                 ctrs->handle = fm->counters_alloced + i;
1923                 SLIST_INSERT_HEAD(&fm->counters, ctrs, next);
1924         }
1925         fm->counters_alloced += FM_COUNTERS_EXPAND;
1926         ENICPMD_LOG(DEBUG, "%u counters allocated, total: %u",
1927                     FM_COUNTERS_EXPAND, fm->counters_alloced);
1928         return 0;
1929 }
1930
1931 static int
1932 enic_fm_counter_zero(struct enic_flowman *fm, struct enic_fm_counter *c)
1933 {
1934         uint64_t args[3];
1935         int ret;
1936
1937         ENICPMD_FUNC_TRACE();
1938         args[0] = FM_COUNTER_QUERY;
1939         args[1] = c->handle;
1940         args[2] = 1; /* clear */
1941         ret = flowman_cmd(fm, args, 3);
1942         if (ret) {
1943                 ENICPMD_LOG(ERR, "counter init: rc=%d handle=0x%x",
1944                             ret, c->handle);
1945                 return ret;
1946         }
1947         return 0;
1948 }
1949
1950 static int
1951 enic_fm_counter_alloc(struct enic_flowman *fm, struct rte_flow_error *error,
1952                       struct enic_fm_counter **ctr)
1953 {
1954         struct enic_fm_counter *c;
1955         int ret;
1956
1957         ENICPMD_FUNC_TRACE();
1958         *ctr = NULL;
1959         if (SLIST_EMPTY(&fm->counters)) {
1960                 ret = enic_fm_more_counters(fm);
1961                 if (ret)
1962                         return rte_flow_error_set(error, -ret,
1963                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1964                                 NULL, "enic: out of counters");
1965         }
1966         c = SLIST_FIRST(&fm->counters);
1967         SLIST_REMOVE_HEAD(&fm->counters, next);
1968         *ctr = c;
1969         return 0;
1970 }
1971
1972 static int
1973 enic_fm_action_free(struct enic_flowman *fm, struct enic_fm_action *ah)
1974 {
1975         uint64_t args[2];
1976         int ret = 0;
1977
1978         ENICPMD_FUNC_TRACE();
1979         RTE_ASSERT(ah->ref > 0);
1980         ah->ref--;
1981         if (ah->ref == 0) {
1982                 args[0] = FM_ACTION_FREE;
1983                 args[1] = ah->handle;
1984                 ret = flowman_cmd(fm, args, 2);
1985                 if (ret)
1986                         /* This is a "should never happen" error. */
1987                         ENICPMD_LOG(ERR, "freeing action rc=%d handle=0x%"
1988                                     PRIx64, ret, ah->handle);
1989                 rte_hash_del_key(fm->action_hash, (const void *)&ah->key);
1990                 free(ah);
1991         }
1992         return ret;
1993 }
1994
1995 static int
1996 enic_fm_entry_free(struct enic_flowman *fm, uint64_t handle)
1997 {
1998         uint64_t args[2];
1999         int rc;
2000
2001         ENICPMD_FUNC_TRACE();
2002         args[0] = FM_MATCH_ENTRY_REMOVE;
2003         args[1] = handle;
2004         rc = flowman_cmd(fm, args, 2);
2005         if (rc)
2006                 ENICPMD_LOG(ERR, "cannot free match entry: rc=%d"
2007                             " handle=0x%" PRIx64, rc, handle);
2008         return rc;
2009 }
2010
2011 static struct enic_fm_jump_flow *
2012 find_jump_flow(struct enic_flowman *fm, uint32_t group)
2013 {
2014         struct enic_fm_jump_flow *j;
2015
2016         ENICPMD_FUNC_TRACE();
2017         TAILQ_FOREACH(j, &fm->jump_list, list) {
2018                 if (j->group == group)
2019                         return j;
2020         }
2021         return NULL;
2022 }
2023
2024 static void
2025 remove_jump_flow(struct enic_flowman *fm, struct rte_flow *flow)
2026 {
2027         struct enic_fm_jump_flow *j;
2028
2029         ENICPMD_FUNC_TRACE();
2030         TAILQ_FOREACH(j, &fm->jump_list, list) {
2031                 if (j->flow == flow) {
2032                         TAILQ_REMOVE(&fm->jump_list, j, list);
2033                         free(j);
2034                         return;
2035                 }
2036         }
2037 }
2038
2039 static int
2040 save_jump_flow(struct enic_flowman *fm,
2041                struct rte_flow *flow,
2042                uint32_t group,
2043                struct fm_tcam_match_entry *match,
2044                struct fm_action *action)
2045 {
2046         struct enic_fm_jump_flow *j;
2047
2048         ENICPMD_FUNC_TRACE();
2049         j = calloc(1, sizeof(struct enic_fm_jump_flow));
2050         if (j == NULL)
2051                 return -ENOMEM;
2052         j->flow = flow;
2053         j->group = group;
2054         j->match = *match;
2055         j->action = *action;
2056         TAILQ_INSERT_HEAD(&fm->jump_list, j, list);
2057         ENICPMD_LOG(DEBUG, "saved jump flow: flow=%p group=%u", flow, group);
2058         return 0;
2059 }
2060
2061 static void
2062 __enic_fm_flow_free(struct enic_flowman *fm, struct enic_fm_flow *fm_flow)
2063 {
2064         if (fm_flow->entry_handle != FM_INVALID_HANDLE) {
2065                 enic_fm_entry_free(fm, fm_flow->entry_handle);
2066                 fm_flow->entry_handle = FM_INVALID_HANDLE;
2067         }
2068         if (fm_flow->action != NULL) {
2069                 enic_fm_action_free(fm, fm_flow->action);
2070                 fm_flow->action = NULL;
2071         }
2072         enic_fm_counter_free(fm, fm_flow);
2073         if (fm_flow->fet) {
2074                 enic_fet_put(fm, fm_flow->fet);
2075                 fm_flow->fet = NULL;
2076         }
2077 }
2078
2079 static void
2080 enic_fm_flow_free(struct enic_flowman *fm, struct rte_flow *flow)
2081 {
2082         struct enic_fm_flow *steer = flow->fm->hairpin_steer_flow;
2083
2084         if (flow->fm->fet && flow->fm->fet->default_key)
2085                 remove_jump_flow(fm, flow);
2086         __enic_fm_flow_free(fm, flow->fm);
2087         if (steer) {
2088                 __enic_fm_flow_free(fm, steer);
2089                 free(steer);
2090         }
2091         free(flow->fm);
2092         free(flow);
2093 }
2094
2095 static int
2096 enic_fm_add_tcam_entry(struct enic_flowman *fm,
2097                        struct fm_tcam_match_entry *match_in,
2098                        uint64_t *entry_handle,
2099                        uint8_t ingress,
2100                        struct rte_flow_error *error)
2101 {
2102         struct fm_tcam_match_entry *ftm;
2103         uint64_t args[3];
2104         int ret;
2105
2106         ENICPMD_FUNC_TRACE();
2107         /* Copy entry to the command buffer */
2108         ftm = &fm->cmd.va->fm_tcam_match_entry;
2109         memcpy(ftm, match_in, sizeof(*ftm));
2110         /* Add TCAM entry */
2111         args[0] = FM_TCAM_ENTRY_INSTALL;
2112         args[1] = ingress ? fm->ig_tcam_hndl : fm->eg_tcam_hndl;
2113         args[2] = fm->cmd.pa;
2114         ret = flowman_cmd(fm, args, 3);
2115         if (ret != 0) {
2116                 ENICPMD_LOG(ERR, "cannot add %s TCAM entry: rc=%d",
2117                             ingress ? "ingress" : "egress", ret);
2118                 rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2119                         NULL, "enic: devcmd(tcam-entry-install)");
2120                 return ret;
2121         }
2122         ENICPMD_LOG(DEBUG, "installed %s TCAM entry: handle=0x%" PRIx64,
2123                     ingress ? "ingress" : "egress", (uint64_t)args[0]);
2124         *entry_handle = args[0];
2125         return 0;
2126 }
2127
2128 static int
2129 enic_fm_add_exact_entry(struct enic_flowman *fm,
2130                         struct fm_tcam_match_entry *match_in,
2131                         uint64_t *entry_handle,
2132                         struct enic_fm_fet *fet,
2133                         struct rte_flow_error *error)
2134 {
2135         struct fm_exact_match_entry *fem;
2136         uint64_t args[3];
2137         int ret;
2138
2139         ENICPMD_FUNC_TRACE();
2140         /* The new entry must have the table's key */
2141         if (memcmp(fet->key.fk_hdrset, match_in->ftm_mask.fk_hdrset,
2142                    sizeof(struct fm_header_set) * FM_HDRSET_MAX)) {
2143                 return rte_flow_error_set(error, EINVAL,
2144                         RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2145                         "enic: key does not match group's key");
2146         }
2147
2148         /* Copy entry to the command buffer */
2149         fem = &fm->cmd.va->fm_exact_match_entry;
2150         /*
2151          * Translate TCAM entry to exact entry. As is only need to drop
2152          * position and mask. The mask is part of the exact match table.
2153          * Position (aka priority) is not supported in the exact match table.
2154          */
2155         fem->fem_data = match_in->ftm_data;
2156         fem->fem_flags = match_in->ftm_flags;
2157         fem->fem_action = match_in->ftm_action;
2158         fem->fem_counter = match_in->ftm_counter;
2159
2160         /* Add exact entry */
2161         args[0] = FM_EXACT_ENTRY_INSTALL;
2162         args[1] = fet->handle;
2163         args[2] = fm->cmd.pa;
2164         ret = flowman_cmd(fm, args, 3);
2165         if (ret != 0) {
2166                 ENICPMD_LOG(ERR, "cannot add %s exact entry: group=%u",
2167                             fet->ingress ? "ingress" : "egress", fet->group);
2168                 rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2169                         NULL, "enic: devcmd(exact-entry-install)");
2170                 return ret;
2171         }
2172         ENICPMD_LOG(DEBUG, "installed %s exact entry: group=%u"
2173                     " handle=0x%" PRIx64,
2174                     fet->ingress ? "ingress" : "egress", fet->group,
2175                     (uint64_t)args[0]);
2176         *entry_handle = args[0];
2177         return 0;
2178 }
2179
2180 static int
2181 enic_action_handle_get(struct enic_flowman *fm, struct fm_action *action_in,
2182                        struct rte_flow_error *error,
2183                        struct enic_fm_action **ah_o)
2184 {
2185         struct enic_fm_action *ah;
2186         struct fm_action *fma;
2187         uint64_t args[2];
2188         int ret = 0;
2189
2190         ret = rte_hash_lookup_data(fm->action_hash, action_in,
2191                                    (void **)&ah);
2192         if (ret < 0 && ret != -ENOENT)
2193                 return rte_flow_error_set(error, -ret,
2194                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2195                                    NULL, "enic: rte_hash_lookup(aciton)");
2196
2197         if (ret == -ENOENT) {
2198                 /* Allocate a new action on the NIC. */
2199                 fma = &fm->cmd.va->fm_action;
2200                 memcpy(fma, action_in, sizeof(*fma));
2201
2202                 ah = calloc(1, sizeof(*ah));
2203                 memcpy(&ah->key, action_in, sizeof(struct fm_action));
2204                 if (ah == NULL)
2205                         return rte_flow_error_set(error, ENOMEM,
2206                                            RTE_FLOW_ERROR_TYPE_HANDLE,
2207                                            NULL, "enic: calloc(fm-action)");
2208                 args[0] = FM_ACTION_ALLOC;
2209                 args[1] = fm->cmd.pa;
2210                 ret = flowman_cmd(fm, args, 2);
2211                 if (ret != 0) {
2212                         rte_flow_error_set(error, -ret,
2213                                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2214                                            NULL, "enic: devcmd(action-alloc)");
2215                         goto error_with_ah;
2216                 }
2217                 ah->handle = args[0];
2218                 ret = rte_hash_add_key_data(fm->action_hash,
2219                                             (const void *)action_in,
2220                                             (void *)ah);
2221                 if (ret != 0) {
2222                         rte_flow_error_set(error, -ret,
2223                                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2224                                            NULL,
2225                                            "enic: rte_hash_add_key_data(actn)");
2226                         goto error_with_action_handle;
2227                 }
2228                 ENICPMD_LOG(DEBUG, "action allocated: handle=0x%" PRIx64,
2229                             ah->handle);
2230         }
2231
2232         /* Action handle struct is valid, increment reference count. */
2233         ah->ref++;
2234         *ah_o = ah;
2235         return 0;
2236 error_with_action_handle:
2237         args[0] = FM_ACTION_FREE;
2238         args[1] = ah->handle;
2239         ret = flowman_cmd(fm, args, 2);
2240         if (ret != 0)
2241                 rte_flow_error_set(error, -ret,
2242                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2243                                    NULL, "enic: devcmd(action-free)");
2244 error_with_ah:
2245         free(ah);
2246         return ret;
2247 }
2248
2249 /* Push match-action to the NIC. */
2250 static int
2251 __enic_fm_flow_add_entry(struct enic_flowman *fm,
2252                          struct enic_fm_flow *fm_flow,
2253                          struct fm_tcam_match_entry *match_in,
2254                          struct fm_action *action_in,
2255                          uint32_t group,
2256                          uint8_t ingress,
2257                          struct rte_flow_error *error)
2258 {
2259         struct enic_fm_counter *ctr;
2260         struct enic_fm_action *ah = NULL;
2261         uint64_t entry_h;
2262         int ret;
2263
2264         ENICPMD_FUNC_TRACE();
2265
2266         /* Get or create an aciton handle. */
2267         ret = enic_action_handle_get(fm, action_in, error, &ah);
2268         if (ret)
2269                 return ret;
2270         match_in->ftm_action = ah->handle;
2271         fm_flow->action = ah;
2272
2273         /* Allocate counter if requested. */
2274         if (match_in->ftm_flags & FMEF_COUNTER) {
2275                 ret = enic_fm_counter_alloc(fm, error, &ctr);
2276                 if (ret) /* error has been filled in */
2277                         return ret;
2278                 fm_flow->counter_valid = true;
2279                 fm_flow->counter = ctr;
2280                 match_in->ftm_counter = ctr->handle;
2281         }
2282
2283         /*
2284          * Get the group's table (either TCAM or exact match table) and
2285          * add entry to it. If we use the exact match table, the handler
2286          * will translate the TCAM entry (match_in) to the appropriate
2287          * exact match entry and use that instead.
2288          */
2289         entry_h = FM_INVALID_HANDLE;
2290         if (group == FM_TCAM_RTE_GROUP) {
2291                 ret = enic_fm_add_tcam_entry(fm, match_in, &entry_h, ingress,
2292                                              error);
2293                 if (ret)
2294                         return ret;
2295                 /* Jump action might have a ref to fet */
2296                 fm_flow->fet = fm->fet;
2297                 fm->fet = NULL;
2298         } else {
2299                 struct enic_fm_fet *fet = NULL;
2300
2301                 ret = enic_fet_get(fm, group, ingress,
2302                                    &match_in->ftm_mask, &fet, error);
2303                 if (ret)
2304                         return ret;
2305                 fm_flow->fet = fet;
2306                 ret = enic_fm_add_exact_entry(fm, match_in, &entry_h, fet,
2307                                               error);
2308                 if (ret)
2309                         return ret;
2310         }
2311         /* Clear counter after adding entry, as it requires in-use counter */
2312         if (fm_flow->counter_valid) {
2313                 ret = enic_fm_counter_zero(fm, fm_flow->counter);
2314                 if (ret)
2315                         return ret;
2316         }
2317         fm_flow->entry_handle = entry_h;
2318         return 0;
2319 }
2320
2321 /* Push match-action to the NIC. */
2322 static struct rte_flow *
2323 enic_fm_flow_add_entry(struct enic_flowman *fm,
2324                        struct fm_tcam_match_entry *match_in,
2325                        struct fm_action *action_in,
2326                        const struct rte_flow_attr *attrs,
2327                        struct rte_flow_error *error)
2328 {
2329         struct enic_fm_flow *fm_flow;
2330         struct rte_flow *flow;
2331
2332         ENICPMD_FUNC_TRACE();
2333         match_in->ftm_position = attrs->priority;
2334         enic_fm_dump_tcam_entry(match_in, action_in, attrs->ingress);
2335         flow = calloc(1, sizeof(*flow));
2336         fm_flow = calloc(1, sizeof(*fm_flow));
2337         if (flow == NULL || fm_flow == NULL) {
2338                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
2339                         NULL, "enic: cannot allocate rte_flow");
2340                 free(flow);
2341                 free(fm_flow);
2342                 return NULL;
2343         }
2344         flow->fm = fm_flow;
2345         fm_flow->action = NULL;
2346         fm_flow->entry_handle = FM_INVALID_HANDLE;
2347         if (__enic_fm_flow_add_entry(fm, fm_flow, match_in, action_in,
2348                                      attrs->group, attrs->ingress, error)) {
2349                 enic_fm_flow_free(fm, flow);
2350                 return NULL;
2351         }
2352         return flow;
2353 }
2354
2355 static void
2356 convert_jump_flows(struct enic_flowman *fm, struct enic_fm_fet *fet,
2357                    struct rte_flow_error *error)
2358 {
2359         struct enic_fm_flow *fm_flow;
2360         struct enic_fm_jump_flow *j;
2361         struct fm_action *fma;
2362         uint32_t group;
2363
2364         ENICPMD_FUNC_TRACE();
2365         /*
2366          * Find the saved flows that should jump to the new table (fet).
2367          * Then delete the old TCAM entry that jumps to the default table,
2368          * and add a new one that jumps to the new table.
2369          */
2370         group = fet->group;
2371         j = find_jump_flow(fm, group);
2372         while (j) {
2373                 ENICPMD_LOG(DEBUG, "convert jump flow: flow=%p group=%u",
2374                             j->flow, group);
2375                 /* Delete old entry */
2376                 fm_flow = j->flow->fm;
2377                 __enic_fm_flow_free(fm, fm_flow);
2378
2379                 /* Add new entry */
2380                 fma = &j->action;
2381                 fma->fma_action_ops[0].exact.handle = fet->handle;
2382                 if (__enic_fm_flow_add_entry(fm, fm_flow, &j->match, fma,
2383                         FM_TCAM_RTE_GROUP, fet->ingress, error)) {
2384                         /* Cannot roll back changes at the moment */
2385                         ENICPMD_LOG(ERR, "cannot convert jump flow: flow=%p",
2386                                     j->flow);
2387                 } else {
2388                         fm_flow->fet = fet;
2389                         fet->ref++;
2390                         ENICPMD_LOG(DEBUG, "convert ok: group=%u ref=%u",
2391                                     fet->group, fet->ref);
2392                 }
2393
2394                 TAILQ_REMOVE(&fm->jump_list, j, list);
2395                 free(j);
2396                 j = find_jump_flow(fm, group);
2397         }
2398 }
2399
2400 static int
2401 add_hairpin_steer(struct enic_flowman *fm, struct rte_flow *flow,
2402                   struct rte_flow_error *error)
2403 {
2404         struct fm_tcam_match_entry *fm_tcam_entry;
2405         struct enic_fm_flow *fm_flow;
2406         struct fm_action *fm_action;
2407         struct fm_action_op fm_op;
2408         int ret;
2409
2410         ENICPMD_FUNC_TRACE();
2411         fm_flow = calloc(1, sizeof(*fm_flow));
2412         if (fm_flow == NULL) {
2413                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
2414                         NULL, "enic: cannot allocate rte_flow");
2415                 return -ENOMEM;
2416         }
2417         /* Original egress hairpin flow */
2418         fm_tcam_entry = &fm->tcam_entry;
2419         fm_action = &fm->action;
2420         /* Use the match pattern of the egress flow as is, without counters */
2421         fm_tcam_entry->ftm_flags &= ~FMEF_COUNTER;
2422         /* The only action is steer to vnic */
2423         fm->action_op_count = 0;
2424         memset(fm_action, 0, sizeof(*fm_action));
2425         memset(&fm_op, 0, sizeof(fm_op));
2426         /* Always to queue 0 for now */
2427         fm_op.fa_op = FMOP_RQ_STEER;
2428         fm_op.rq_steer.rq_index = 0;
2429         fm_op.rq_steer.vnic_handle = fm->hairpin_steer_vnic_h;
2430         ret = enic_fm_append_action_op(fm, &fm_op, error);
2431         if (ret)
2432                 goto error_with_flow;
2433         ENICPMD_LOG(DEBUG, "add steer op");
2434         /* Add required END */
2435         memset(&fm_op, 0, sizeof(fm_op));
2436         fm_op.fa_op = FMOP_END;
2437         ret = enic_fm_append_action_op(fm, &fm_op, error);
2438         if (ret)
2439                 goto error_with_flow;
2440         /* Add the ingress flow */
2441         fm_flow->action = NULL;
2442         fm_flow->entry_handle = FM_INVALID_HANDLE;
2443         ret = __enic_fm_flow_add_entry(fm, fm_flow, fm_tcam_entry, fm_action,
2444                                        FM_TCAM_RTE_GROUP, 1 /* ingress */, error);
2445         if (ret) {
2446                 ENICPMD_LOG(ERR, "cannot add hairpin-steer flow");
2447                 goto error_with_flow;
2448         }
2449         /* The new flow is now the egress flow's paired flow */
2450         flow->fm->hairpin_steer_flow = fm_flow;
2451         return 0;
2452
2453 error_with_flow:
2454         free(fm_flow);
2455         return ret;
2456 }
2457
2458 static void
2459 enic_fm_open_scratch(struct enic_flowman *fm)
2460 {
2461         fm->action_op_count = 0;
2462         fm->fet = NULL;
2463         fm->need_hairpin_steer = 0;
2464         fm->hairpin_steer_vnic_h = 0;
2465         memset(&fm->tcam_entry, 0, sizeof(fm->tcam_entry));
2466         memset(&fm->action, 0, sizeof(fm->action));
2467 }
2468
2469 static void
2470 enic_fm_close_scratch(struct enic_flowman *fm)
2471 {
2472         if (fm->fet) {
2473                 enic_fet_put(fm, fm->fet);
2474                 fm->fet = NULL;
2475         }
2476         fm->action_op_count = 0;
2477 }
2478
2479 static int
2480 enic_fm_flow_validate(struct rte_eth_dev *dev,
2481                       const struct rte_flow_attr *attrs,
2482                       const struct rte_flow_item pattern[],
2483                       const struct rte_flow_action actions[],
2484                       struct rte_flow_error *error)
2485 {
2486         struct fm_tcam_match_entry *fm_tcam_entry;
2487         struct fm_action *fm_action;
2488         struct enic_flowman *fm;
2489         int ret;
2490
2491         ENICPMD_FUNC_TRACE();
2492         fm = begin_fm(pmd_priv(dev));
2493         if (fm == NULL)
2494                 return -ENOTSUP;
2495         enic_fm_open_scratch(fm);
2496         ret = enic_fm_flow_parse(fm, attrs, pattern, actions, error);
2497         if (!ret) {
2498                 fm_tcam_entry = &fm->tcam_entry;
2499                 fm_action = &fm->action;
2500                 enic_fm_dump_tcam_entry(fm_tcam_entry, fm_action,
2501                                         attrs->ingress);
2502         }
2503         enic_fm_close_scratch(fm);
2504         end_fm(fm);
2505         return ret;
2506 }
2507
2508 static int
2509 enic_fm_flow_query_count(struct rte_eth_dev *dev,
2510                          struct rte_flow *flow, void *data,
2511                          struct rte_flow_error *error)
2512 {
2513         struct rte_flow_query_count *query;
2514         struct enic_fm_flow *fm_flow;
2515         struct enic_flowman *fm;
2516         uint64_t args[3];
2517         int rc;
2518
2519         ENICPMD_FUNC_TRACE();
2520         fm = begin_fm(pmd_priv(dev));
2521         query = data;
2522         fm_flow = flow->fm;
2523         if (!fm_flow->counter_valid) {
2524                 rc = rte_flow_error_set(error, ENOTSUP,
2525                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2526                         "enic: flow does not have counter");
2527                 goto exit;
2528         }
2529
2530         args[0] = FM_COUNTER_QUERY;
2531         args[1] = fm_flow->counter->handle;
2532         args[2] = query->reset;
2533         rc = flowman_cmd(fm, args, 3);
2534         if (rc) {
2535                 ENICPMD_LOG(ERR, "cannot query counter: rc=%d handle=0x%x",
2536                             rc, fm_flow->counter->handle);
2537                 goto exit;
2538         }
2539         query->hits_set = 1;
2540         query->hits = args[0];
2541         query->bytes_set = 1;
2542         query->bytes = args[1];
2543         rc = 0;
2544 exit:
2545         end_fm(fm);
2546         return rc;
2547 }
2548
2549 static int
2550 enic_fm_flow_query(struct rte_eth_dev *dev,
2551                    struct rte_flow *flow,
2552                    const struct rte_flow_action *actions,
2553                    void *data,
2554                    struct rte_flow_error *error)
2555 {
2556         int ret = 0;
2557
2558         ENICPMD_FUNC_TRACE();
2559         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2560                 switch (actions->type) {
2561                 case RTE_FLOW_ACTION_TYPE_VOID:
2562                         break;
2563                 case RTE_FLOW_ACTION_TYPE_COUNT:
2564                         ret = enic_fm_flow_query_count(dev, flow, data, error);
2565                         break;
2566                 default:
2567                         return rte_flow_error_set(error, ENOTSUP,
2568                                                   RTE_FLOW_ERROR_TYPE_ACTION,
2569                                                   actions,
2570                                                   "action not supported");
2571                 }
2572                 if (ret < 0)
2573                         return ret;
2574         }
2575         return 0;
2576 }
2577
2578 static struct rte_flow *
2579 enic_fm_flow_create(struct rte_eth_dev *dev,
2580                     const struct rte_flow_attr *attrs,
2581                     const struct rte_flow_item pattern[],
2582                     const struct rte_flow_action actions[],
2583                     struct rte_flow_error *error)
2584 {
2585         struct fm_tcam_match_entry *fm_tcam_entry;
2586         struct fm_action *fm_action;
2587         struct enic_flowman *fm;
2588         struct enic_fm_fet *fet;
2589         struct rte_flow *flow;
2590         struct enic *enic;
2591         int ret;
2592
2593         ENICPMD_FUNC_TRACE();
2594         enic = pmd_priv(dev);
2595         fm = begin_fm(enic);
2596         if (fm == NULL) {
2597                 rte_flow_error_set(error, ENOTSUP,
2598                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2599                         "flowman is not initialized");
2600                 return NULL;
2601         }
2602         enic_fm_open_scratch(fm);
2603         flow = NULL;
2604         ret = enic_fm_flow_parse(fm, attrs, pattern, actions, error);
2605         if (ret < 0)
2606                 goto error_with_scratch;
2607         fm_tcam_entry = &fm->tcam_entry;
2608         fm_action = &fm->action;
2609         flow = enic_fm_flow_add_entry(fm, fm_tcam_entry, fm_action,
2610                                       attrs, error);
2611         if (flow) {
2612                 /* Add ingress rule that pairs with hairpin rule */
2613                 if (fm->need_hairpin_steer) {
2614                         ret = add_hairpin_steer(fm, flow, error);
2615                         if (ret) {
2616                                 enic_fm_flow_free(fm, flow);
2617                                 flow = NULL;
2618                                 goto error_with_scratch;
2619                         }
2620                 }
2621                 LIST_INSERT_HEAD(&enic->flows, flow, next);
2622                 fet = flow->fm->fet;
2623                 if (fet && fet->default_key) {
2624                         /*
2625                          * Jump to non-existent group? Save the relevant info
2626                          * so we can convert this flow when that group
2627                          * materializes.
2628                          */
2629                         save_jump_flow(fm, flow, fet->group,
2630                                        fm_tcam_entry, fm_action);
2631                 } else if (fet && fet->ref == 1) {
2632                         /*
2633                          * A new table is created. Convert the saved flows
2634                          * that should jump to this group.
2635                          */
2636                         convert_jump_flows(fm, fet, error);
2637                 }
2638         }
2639
2640 error_with_scratch:
2641         enic_fm_close_scratch(fm);
2642         end_fm(fm);
2643         return flow;
2644 }
2645
2646 static int
2647 enic_fm_flow_destroy(struct rte_eth_dev *dev, struct rte_flow *flow,
2648                      __rte_unused struct rte_flow_error *error)
2649 {
2650         struct enic *enic = pmd_priv(dev);
2651         struct enic_flowman *fm;
2652
2653         ENICPMD_FUNC_TRACE();
2654         fm = begin_fm(enic);
2655         if (fm == NULL)
2656                 return 0;
2657         LIST_REMOVE(flow, next);
2658         enic_fm_flow_free(fm, flow);
2659         end_fm(fm);
2660         return 0;
2661 }
2662
2663 static int
2664 enic_fm_flow_flush(struct rte_eth_dev *dev,
2665                    __rte_unused struct rte_flow_error *error)
2666 {
2667         LIST_HEAD(enic_flows, rte_flow) internal;
2668         struct enic_fm_flow *fm_flow;
2669         struct enic_flowman *fm;
2670         struct rte_flow *flow;
2671         struct enic *enic = pmd_priv(dev);
2672
2673         ENICPMD_FUNC_TRACE();
2674
2675         fm = begin_fm(enic);
2676         if (fm == NULL)
2677                 return 0;
2678         /* Destroy all non-internal flows */
2679         LIST_INIT(&internal);
2680         while (!LIST_EMPTY(&enic->flows)) {
2681                 flow = LIST_FIRST(&enic->flows);
2682                 fm_flow = flow->fm;
2683                 LIST_REMOVE(flow, next);
2684                 if (flow->internal) {
2685                         LIST_INSERT_HEAD(&internal, flow, next);
2686                         continue;
2687                 }
2688                 /*
2689                  * If tables are null, then vNIC is closing, and the firmware
2690                  * has already cleaned up flowman state. So do not try to free
2691                  * resources, as it only causes errors.
2692                  */
2693                 if (fm->ig_tcam_hndl == FM_INVALID_HANDLE) {
2694                         fm_flow->entry_handle = FM_INVALID_HANDLE;
2695                         fm_flow->action = NULL;
2696                         fm_flow->fet = NULL;
2697                 }
2698                 enic_fm_flow_free(fm, flow);
2699         }
2700         while (!LIST_EMPTY(&internal)) {
2701                 flow = LIST_FIRST(&internal);
2702                 LIST_REMOVE(flow, next);
2703                 LIST_INSERT_HEAD(&enic->flows, flow, next);
2704         }
2705         end_fm(fm);
2706         return 0;
2707 }
2708
2709 static int
2710 enic_fm_tbl_free(struct enic_flowman *fm, uint64_t handle)
2711 {
2712         uint64_t args[2];
2713         int rc;
2714
2715         args[0] = FM_MATCH_TABLE_FREE;
2716         args[1] = handle;
2717         rc = flowman_cmd(fm, args, 2);
2718         if (rc)
2719                 ENICPMD_LOG(ERR, "cannot free table: rc=%d handle=0x%" PRIx64,
2720                             rc, handle);
2721         return rc;
2722 }
2723
2724 static int
2725 enic_fm_tcam_tbl_alloc(struct enic_flowman *fm, uint32_t direction,
2726                         uint32_t max_entries, uint64_t *handle)
2727 {
2728         struct fm_tcam_match_table *tcam_tbl;
2729         uint64_t args[2];
2730         int rc;
2731
2732         ENICPMD_FUNC_TRACE();
2733         tcam_tbl = &fm->cmd.va->fm_tcam_match_table;
2734         tcam_tbl->ftt_direction = direction;
2735         tcam_tbl->ftt_stage = FM_STAGE_LAST;
2736         tcam_tbl->ftt_max_entries = max_entries;
2737         args[0] = FM_TCAM_TABLE_ALLOC;
2738         args[1] = fm->cmd.pa;
2739         rc = flowman_cmd(fm, args, 2);
2740         if (rc) {
2741                 ENICPMD_LOG(ERR, "cannot alloc %s TCAM table: rc=%d",
2742                             (direction == FM_INGRESS) ? "IG" : "EG", rc);
2743                 return rc;
2744         }
2745         *handle = args[0];
2746         ENICPMD_LOG(DEBUG, "%s TCAM table allocated, handle=0x%" PRIx64,
2747                     (direction == FM_INGRESS) ? "IG" : "EG", *handle);
2748         return 0;
2749 }
2750
2751 static int
2752 enic_fm_init_actions(struct enic_flowman *fm)
2753 {
2754         struct rte_hash *a_hash;
2755         char name[RTE_HASH_NAMESIZE];
2756         struct rte_hash_parameters params = {
2757                 .entries = FM_MAX_ACTION_TABLE_SIZE,
2758                 .key_len = sizeof(struct fm_action),
2759                 .hash_func = rte_jhash,
2760                 .hash_func_init_val = 0,
2761                 .socket_id = rte_socket_id(),
2762         };
2763
2764         ENICPMD_FUNC_TRACE();
2765         snprintf((char *)name, sizeof(name), "fm-ah-%s",
2766                  fm->owner_enic->bdf_name);
2767         params.name = name;
2768
2769         a_hash = rte_hash_create(&params);
2770         if (a_hash == NULL)
2771                 return -rte_errno;
2772         fm->action_hash = a_hash;
2773         return 0;
2774 }
2775
2776 static int
2777 enic_fm_init_counters(struct enic_flowman *fm)
2778 {
2779         ENICPMD_FUNC_TRACE();
2780         SLIST_INIT(&fm->counters);
2781         return enic_fm_more_counters(fm);
2782 }
2783
2784 static void
2785 enic_fm_free_all_counters(struct enic_flowman *fm)
2786 {
2787         uint64_t args[2];
2788         int rc;
2789
2790         args[0] = FM_COUNTER_BRK;
2791         args[1] = 0;
2792         rc = flowman_cmd(fm, args, 2);
2793         if (rc != 0)
2794                 ENICPMD_LOG(ERR, "cannot free counters: rc=%d", rc);
2795         rte_free(fm->counter_stack);
2796 }
2797
2798 static int
2799 enic_fm_alloc_tcam_tables(struct enic_flowman *fm)
2800 {
2801         int rc;
2802
2803         ENICPMD_FUNC_TRACE();
2804         rc = enic_fm_tcam_tbl_alloc(fm, FM_INGRESS, FM_MAX_TCAM_TABLE_SIZE,
2805                                     &fm->ig_tcam_hndl);
2806         if (rc)
2807                 return rc;
2808         rc = enic_fm_tcam_tbl_alloc(fm, FM_EGRESS, FM_MAX_TCAM_TABLE_SIZE,
2809                                     &fm->eg_tcam_hndl);
2810         return rc;
2811 }
2812
2813 static void
2814 enic_fm_free_tcam_tables(struct enic_flowman *fm)
2815 {
2816         ENICPMD_FUNC_TRACE();
2817         if (fm->ig_tcam_hndl) {
2818                 ENICPMD_LOG(DEBUG, "free IG TCAM table handle=0x%" PRIx64,
2819                             fm->ig_tcam_hndl);
2820                 enic_fm_tbl_free(fm, fm->ig_tcam_hndl);
2821                 fm->ig_tcam_hndl = FM_INVALID_HANDLE;
2822         }
2823         if (fm->eg_tcam_hndl) {
2824                 ENICPMD_LOG(DEBUG, "free EG TCAM table handle=0x%" PRIx64,
2825                             fm->eg_tcam_hndl);
2826                 enic_fm_tbl_free(fm, fm->eg_tcam_hndl);
2827                 fm->eg_tcam_hndl = FM_INVALID_HANDLE;
2828         }
2829 }
2830
2831 int
2832 enic_fm_init(struct enic *enic)
2833 {
2834         const struct rte_pci_addr *addr;
2835         struct enic_flowman *fm;
2836         uint8_t name[RTE_MEMZONE_NAMESIZE];
2837         int rc;
2838
2839         if (enic->flow_filter_mode != FILTER_FLOWMAN)
2840                 return 0;
2841         ENICPMD_FUNC_TRACE();
2842         /* Get vnic handle and save for port-id action */
2843         if (enic_is_vf_rep(enic))
2844                 addr = &VF_ENIC_TO_VF_REP(enic)->bdf;
2845         else
2846                 addr = &RTE_ETH_DEV_TO_PCI(enic->rte_dev)->addr;
2847         rc = enic_fm_find_vnic(enic, addr, &enic->fm_vnic_handle);
2848         if (rc) {
2849                 ENICPMD_LOG(ERR, "cannot find vnic handle for %x:%x:%x",
2850                             addr->bus, addr->devid, addr->function);
2851                 return rc;
2852         }
2853         /* Save UIF for egport action */
2854         enic->fm_vnic_uif = vnic_dev_uif(enic->vdev);
2855         ENICPMD_LOG(DEBUG, "uif %u", enic->fm_vnic_uif);
2856         /* Nothing else to do for representor. It will share the PF flowman */
2857         if (enic_is_vf_rep(enic))
2858                 return 0;
2859         fm = calloc(1, sizeof(*fm));
2860         if (fm == NULL) {
2861                 ENICPMD_LOG(ERR, "cannot alloc flowman struct");
2862                 return -ENOMEM;
2863         }
2864         fm->owner_enic = enic;
2865         rte_spinlock_init(&fm->lock);
2866         TAILQ_INIT(&fm->fet_list);
2867         TAILQ_INIT(&fm->jump_list);
2868         /* Allocate host memory for flowman commands */
2869         snprintf((char *)name, sizeof(name), "fm-cmd-%s", enic->bdf_name);
2870         fm->cmd.va = enic_alloc_consistent(enic,
2871                 sizeof(union enic_flowman_cmd_mem), &fm->cmd.pa, name);
2872         if (!fm->cmd.va) {
2873                 ENICPMD_LOG(ERR, "cannot allocate flowman command memory");
2874                 rc = -ENOMEM;
2875                 goto error_fm;
2876         }
2877         /* Allocate TCAM tables upfront as they are the main tables */
2878         rc = enic_fm_alloc_tcam_tables(fm);
2879         if (rc) {
2880                 ENICPMD_LOG(ERR, "cannot alloc TCAM tables");
2881                 goto error_cmd;
2882         }
2883         /* Then a number of counters */
2884         rc = enic_fm_init_counters(fm);
2885         if (rc) {
2886                 ENICPMD_LOG(ERR, "cannot alloc counters");
2887                 goto error_tables;
2888         }
2889         /* set up action handle hash */
2890         rc = enic_fm_init_actions(fm);
2891         if (rc) {
2892                 ENICPMD_LOG(ERR, "cannot create action hash, error:%d", rc);
2893                 goto error_tables;
2894         }
2895         /*
2896          * One default exact match table for each direction. We hold onto
2897          * it until close.
2898          */
2899         rc = enic_fet_alloc(fm, 1, NULL, 128, &fm->default_ig_fet);
2900         if (rc) {
2901                 ENICPMD_LOG(ERR, "cannot alloc default IG exact match table");
2902                 goto error_counters;
2903         }
2904         fm->default_ig_fet->ref = 1;
2905         rc = enic_fet_alloc(fm, 0, NULL, 128, &fm->default_eg_fet);
2906         if (rc) {
2907                 ENICPMD_LOG(ERR, "cannot alloc default EG exact match table");
2908                 goto error_ig_fet;
2909         }
2910         fm->default_eg_fet->ref = 1;
2911         fm->vf_rep_tag = FM_VF_REP_TAG;
2912         enic->fm = fm;
2913         return 0;
2914
2915 error_ig_fet:
2916         enic_fet_free(fm, fm->default_ig_fet);
2917 error_counters:
2918         enic_fm_free_all_counters(fm);
2919 error_tables:
2920         enic_fm_free_tcam_tables(fm);
2921 error_cmd:
2922         enic_free_consistent(enic, sizeof(union enic_flowman_cmd_mem),
2923                 fm->cmd.va, fm->cmd.pa);
2924 error_fm:
2925         free(fm);
2926         return rc;
2927 }
2928
2929 void
2930 enic_fm_destroy(struct enic *enic)
2931 {
2932         struct enic_flowman *fm;
2933         struct enic_fm_fet *fet;
2934
2935         ENICPMD_FUNC_TRACE();
2936         if (enic_is_vf_rep(enic)) {
2937                 delete_rep_flows(enic);
2938                 return;
2939         }
2940         if (enic->fm == NULL)
2941                 return;
2942         fm = enic->fm;
2943         enic_fm_flow_flush(enic->rte_dev, NULL);
2944         enic_fet_free(fm, fm->default_eg_fet);
2945         enic_fet_free(fm, fm->default_ig_fet);
2946         /* Free all exact match tables still open */
2947         while (!TAILQ_EMPTY(&fm->fet_list)) {
2948                 fet = TAILQ_FIRST(&fm->fet_list);
2949                 enic_fet_free(fm, fet);
2950         }
2951         enic_fm_free_tcam_tables(fm);
2952         enic_fm_free_all_counters(fm);
2953         rte_hash_free(fm->action_hash);
2954         enic_free_consistent(enic, sizeof(union enic_flowman_cmd_mem),
2955                 fm->cmd.va, fm->cmd.pa);
2956         fm->cmd.va = NULL;
2957         free(fm);
2958         enic->fm = NULL;
2959 }
2960
2961 int
2962 enic_fm_allocate_switch_domain(struct enic *pf)
2963 {
2964         const struct rte_pci_addr *cur_a, *prev_a;
2965         struct rte_eth_dev *dev;
2966         struct enic *cur, *prev;
2967         uint16_t domain_id;
2968         uint64_t vnic_h;
2969         uint16_t pid;
2970         int ret;
2971
2972         ENICPMD_FUNC_TRACE();
2973         if (enic_is_vf_rep(pf))
2974                 return -EINVAL;
2975         cur = pf;
2976         cur_a = &RTE_ETH_DEV_TO_PCI(cur->rte_dev)->addr;
2977         /* Go through ports and find another PF that is on the same adapter */
2978         RTE_ETH_FOREACH_DEV(pid) {
2979                 dev = &rte_eth_devices[pid];
2980                 if (!dev_is_enic(dev))
2981                         continue;
2982                 if (dev->data->dev_flags & RTE_ETH_DEV_REPRESENTOR)
2983                         continue;
2984                 if (dev == cur->rte_dev)
2985                         continue;
2986                 /* dev is another PF. Is it on the same adapter? */
2987                 prev = pmd_priv(dev);
2988                 prev_a = &RTE_ETH_DEV_TO_PCI(dev)->addr;
2989                 if (!enic_fm_find_vnic(cur, prev_a, &vnic_h)) {
2990                         ENICPMD_LOG(DEBUG, "Port %u (PF BDF %x:%x:%x) and port %u (PF BDF %x:%x:%x domain %u) are on the same VIC",
2991                                 cur->rte_dev->data->port_id,
2992                                 cur_a->bus, cur_a->devid, cur_a->function,
2993                                 dev->data->port_id,
2994                                 prev_a->bus, prev_a->devid, prev_a->function,
2995                                 prev->switch_domain_id);
2996                         cur->switch_domain_id = prev->switch_domain_id;
2997                         return 0;
2998                 }
2999         }
3000         ret = rte_eth_switch_domain_alloc(&domain_id);
3001         if (ret) {
3002                 ENICPMD_LOG(WARNING, "failed to allocate switch domain for device %d",
3003                             ret);
3004         }
3005         cur->switch_domain_id = domain_id;
3006         ENICPMD_LOG(DEBUG, "Port %u (PF BDF %x:%x:%x) is the 1st PF on the VIC. Allocated switch domain id %u",
3007                     cur->rte_dev->data->port_id,
3008                     cur_a->bus, cur_a->devid, cur_a->function,
3009                     domain_id);
3010         return ret;
3011 }
3012
3013 const struct rte_flow_ops enic_fm_flow_ops = {
3014         .validate = enic_fm_flow_validate,
3015         .create = enic_fm_flow_create,
3016         .destroy = enic_fm_flow_destroy,
3017         .flush = enic_fm_flow_flush,
3018         .query = enic_fm_flow_query,
3019 };
3020
3021 /* Add a high priority flow that loops representor packets to VF */
3022 int
3023 enic_fm_add_rep2vf_flow(struct enic_vf_representor *vf)
3024 {
3025         struct fm_tcam_match_entry *fm_tcam_entry;
3026         struct rte_flow *flow0, *flow1;
3027         struct fm_action *fm_action;
3028         struct rte_flow_error error;
3029         struct rte_flow_attr attrs;
3030         struct fm_action_op fm_op;
3031         struct enic_flowman *fm;
3032         struct enic *pf;
3033         uint8_t tag;
3034
3035         pf = vf->pf;
3036         fm = pf->fm;
3037         tag = fm->vf_rep_tag;
3038         enic_fm_open_scratch(fm);
3039         fm_tcam_entry = &fm->tcam_entry;
3040         fm_action = &fm->action;
3041         /* Egress rule: match WQ ID and tag+hairpin */
3042         fm_tcam_entry->ftm_data.fk_wq_id = vf->pf_wq_idx;
3043         fm_tcam_entry->ftm_mask.fk_wq_id = 0xffff;
3044         fm_tcam_entry->ftm_flags |= FMEF_COUNTER;
3045         memset(&fm_op, 0, sizeof(fm_op));
3046         fm_op.fa_op = FMOP_TAG;
3047         fm_op.tag.tag = tag;
3048         enic_fm_append_action_op(fm, &fm_op, &error);
3049         memset(&fm_op, 0, sizeof(fm_op));
3050         fm_op.fa_op = FMOP_EG_HAIRPIN;
3051         enic_fm_append_action_op(fm, &fm_op, &error);
3052         memset(&fm_op, 0, sizeof(fm_op));
3053         fm_op.fa_op = FMOP_END;
3054         enic_fm_append_action_op(fm, &fm_op, &error);
3055         attrs.group = 0;
3056         attrs.ingress = 0;
3057         attrs.egress = 1;
3058         attrs.priority = FM_HIGHEST_PRIORITY;
3059         flow0 = enic_fm_flow_add_entry(fm, fm_tcam_entry, fm_action,
3060                                        &attrs, &error);
3061         enic_fm_close_scratch(fm);
3062         if (flow0 == NULL) {
3063                 ENICPMD_LOG(ERR, "Cannot create flow 0 for representor->VF");
3064                 return -EINVAL;
3065         }
3066         LIST_INSERT_HEAD(&pf->flows, flow0, next);
3067         /* Make this flow internal, so the user app cannot delete it */
3068         flow0->internal = 1;
3069         ENICPMD_LOG(DEBUG, "representor->VF %d flow created: wq %d -> tag %d hairpin",
3070                     vf->vf_id, vf->pf_wq_idx, tag);
3071
3072         /* Ingress: steer hairpinned to VF RQ 0 */
3073         enic_fm_open_scratch(fm);
3074         fm_tcam_entry->ftm_flags |= FMEF_COUNTER;
3075         fm_tcam_entry->ftm_data.fk_hdrset[0].fk_metadata |= FKM_EG_HAIRPINNED;
3076         fm_tcam_entry->ftm_mask.fk_hdrset[0].fk_metadata |= FKM_EG_HAIRPINNED;
3077         fm_tcam_entry->ftm_data.fk_packet_tag = tag;
3078         fm_tcam_entry->ftm_mask.fk_packet_tag = 0xff;
3079         memset(&fm_op, 0, sizeof(fm_op));
3080         fm_op.fa_op = FMOP_RQ_STEER;
3081         fm_op.rq_steer.rq_index = 0;
3082         fm_op.rq_steer.vnic_handle = vf->enic.fm_vnic_handle;
3083         enic_fm_append_action_op(fm, &fm_op, &error);
3084         memset(&fm_op, 0, sizeof(fm_op));
3085         fm_op.fa_op = FMOP_END;
3086         enic_fm_append_action_op(fm, &fm_op, &error);
3087         attrs.group = 0;
3088         attrs.ingress = 1;
3089         attrs.egress = 0;
3090         attrs.priority = FM_HIGHEST_PRIORITY;
3091         flow1 = enic_fm_flow_add_entry(fm, fm_tcam_entry, fm_action,
3092                                        &attrs, &error);
3093         enic_fm_close_scratch(fm);
3094         if (flow1 == NULL) {
3095                 ENICPMD_LOG(ERR, "Cannot create flow 1 for representor->VF");
3096                 enic_fm_flow_destroy(pf->rte_dev, flow0, &error);
3097                 return -EINVAL;
3098         }
3099         LIST_INSERT_HEAD(&pf->flows, flow1, next);
3100         flow1->internal = 1;
3101         ENICPMD_LOG(DEBUG, "representor->VF %d flow created: tag %d hairpinned -> VF RQ %d",
3102                     vf->vf_id, tag, fm_op.rq_steer.rq_index);
3103         vf->rep2vf_flow[0] = flow0;
3104         vf->rep2vf_flow[1] = flow1;
3105         /* Done with this tag, use a different one next time */
3106         fm->vf_rep_tag++;
3107         return 0;
3108 }
3109
3110 /*
3111  * Add a low priority flow that matches all packets from VF and loops them
3112  * back to the representor.
3113  */
3114 int
3115 enic_fm_add_vf2rep_flow(struct enic_vf_representor *vf)
3116 {
3117         struct fm_tcam_match_entry *fm_tcam_entry;
3118         struct rte_flow *flow0, *flow1;
3119         struct fm_action *fm_action;
3120         struct rte_flow_error error;
3121         struct rte_flow_attr attrs;
3122         struct fm_action_op fm_op;
3123         struct enic_flowman *fm;
3124         struct enic *pf;
3125         uint8_t tag;
3126
3127         pf = vf->pf;
3128         fm = pf->fm;
3129         tag = fm->vf_rep_tag;
3130         enic_fm_open_scratch(fm);
3131         fm_tcam_entry = &fm->tcam_entry;
3132         fm_action = &fm->action;
3133         /* Egress rule: match-any and tag+hairpin */
3134         fm_tcam_entry->ftm_data.fk_wq_id = 0;
3135         fm_tcam_entry->ftm_mask.fk_wq_id = 0xffff;
3136         fm_tcam_entry->ftm_data.fk_wq_vnic = vf->enic.fm_vnic_handle;
3137         fm_tcam_entry->ftm_flags |= FMEF_COUNTER;
3138         memset(&fm_op, 0, sizeof(fm_op));
3139         fm_op.fa_op = FMOP_TAG;
3140         fm_op.tag.tag = tag;
3141         enic_fm_append_action_op(fm, &fm_op, &error);
3142         memset(&fm_op, 0, sizeof(fm_op));
3143         fm_op.fa_op = FMOP_EG_HAIRPIN;
3144         enic_fm_append_action_op(fm, &fm_op, &error);
3145         memset(&fm_op, 0, sizeof(fm_op));
3146         fm_op.fa_op = FMOP_END;
3147         enic_fm_append_action_op(fm, &fm_op, &error);
3148         attrs.group = 0;
3149         attrs.ingress = 0;
3150         attrs.egress = 1;
3151         attrs.priority = FM_LOWEST_PRIORITY;
3152         flow0 = enic_fm_flow_add_entry(fm, fm_tcam_entry, fm_action,
3153                                        &attrs, &error);
3154         enic_fm_close_scratch(fm);
3155         if (flow0 == NULL) {
3156                 ENICPMD_LOG(ERR, "Cannot create flow 0 for VF->representor");
3157                 return -EINVAL;
3158         }
3159         LIST_INSERT_HEAD(&pf->flows, flow0, next);
3160         /* Make this flow internal, so the user app cannot delete it */
3161         flow0->internal = 1;
3162         ENICPMD_LOG(DEBUG, "VF %d->representor flow created: wq %d (low prio) -> tag %d hairpin",
3163                     vf->vf_id, fm_tcam_entry->ftm_data.fk_wq_id, tag);
3164
3165         /* Ingress: steer hairpinned to VF rep RQ */
3166         enic_fm_open_scratch(fm);
3167         fm_tcam_entry->ftm_flags |= FMEF_COUNTER;
3168         fm_tcam_entry->ftm_data.fk_hdrset[0].fk_metadata |= FKM_EG_HAIRPINNED;
3169         fm_tcam_entry->ftm_mask.fk_hdrset[0].fk_metadata |= FKM_EG_HAIRPINNED;
3170         fm_tcam_entry->ftm_data.fk_packet_tag = tag;
3171         fm_tcam_entry->ftm_mask.fk_packet_tag = 0xff;
3172         memset(&fm_op, 0, sizeof(fm_op));
3173         fm_op.fa_op = FMOP_RQ_STEER;
3174         fm_op.rq_steer.rq_index = vf->pf_rq_sop_idx;
3175         fm_op.rq_steer.vnic_handle = pf->fm_vnic_handle;
3176         enic_fm_append_action_op(fm, &fm_op, &error);
3177         memset(&fm_op, 0, sizeof(fm_op));
3178         fm_op.fa_op = FMOP_END;
3179         enic_fm_append_action_op(fm, &fm_op, &error);
3180         attrs.group = 0;
3181         attrs.ingress = 1;
3182         attrs.egress = 0;
3183         attrs.priority = FM_HIGHEST_PRIORITY;
3184         flow1 = enic_fm_flow_add_entry(fm, fm_tcam_entry, fm_action,
3185                                        &attrs, &error);
3186         enic_fm_close_scratch(fm);
3187         if (flow1 == NULL) {
3188                 ENICPMD_LOG(ERR, "Cannot create flow 1 for VF->representor");
3189                 enic_fm_flow_destroy(pf->rte_dev, flow0, &error);
3190                 return -EINVAL;
3191         }
3192         LIST_INSERT_HEAD(&pf->flows, flow1, next);
3193         flow1->internal = 1;
3194         ENICPMD_LOG(DEBUG, "VF %d->representor flow created: tag %d hairpinned -> PF RQ %d",
3195                     vf->vf_id, tag, vf->pf_rq_sop_idx);
3196         vf->vf2rep_flow[0] = flow0;
3197         vf->vf2rep_flow[1] = flow1;
3198         /* Done with this tag, use a different one next time */
3199         fm->vf_rep_tag++;
3200         return 0;
3201 }
3202
3203 /* Destroy representor flows created by enic_fm_add_{rep2vf,vf2rep}_flow */
3204 static void
3205 delete_rep_flows(struct enic *enic)
3206 {
3207         struct enic_vf_representor *vf;
3208         struct rte_flow_error error;
3209         struct rte_eth_dev *dev;
3210         uint32_t i;
3211
3212         RTE_ASSERT(enic_is_vf_rep(enic));
3213         vf = VF_ENIC_TO_VF_REP(enic);
3214         dev = vf->pf->rte_dev;
3215         for (i = 0; i < ARRAY_SIZE(vf->vf2rep_flow); i++) {
3216                 if (vf->vf2rep_flow[i])
3217                         enic_fm_flow_destroy(dev, vf->vf2rep_flow[i], &error);
3218         }
3219         for (i = 0; i < ARRAY_SIZE(vf->rep2vf_flow); i++) {
3220                 if (vf->rep2vf_flow[i])
3221                         enic_fm_flow_destroy(dev, vf->rep2vf_flow[i], &error);
3222         }
3223 }
3224
3225 static struct enic_flowman *
3226 begin_fm(struct enic *enic)
3227 {
3228         struct enic_vf_representor *vf;
3229         struct enic_flowman *fm;
3230
3231         /* Representor uses PF flowman */
3232         if (enic_is_vf_rep(enic)) {
3233                 vf = VF_ENIC_TO_VF_REP(enic);
3234                 fm = vf->pf->fm;
3235         } else {
3236                 fm = enic->fm;
3237         }
3238         /* Save the API caller and lock if representors exist */
3239         if (fm) {
3240                 if (fm->owner_enic->switchdev_mode)
3241                         rte_spinlock_lock(&fm->lock);
3242                 fm->user_enic = enic;
3243         }
3244         return fm;
3245 }
3246
3247 static void
3248 end_fm(struct enic_flowman *fm)
3249 {
3250         fm->user_enic = NULL;
3251         if (fm->owner_enic->switchdev_mode)
3252                 rte_spinlock_unlock(&fm->lock);
3253 }