drivers/net/mlx5/mlx5_flow.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2016 6WIND S.A.
   5  *   Copyright 2016 Mellanox.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of 6WIND S.A. nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/queue.h>
  35 #include <string.h>
  36
  37 /* Verbs header. */
  38 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  39 #ifdef PEDANTIC
  40 #pragma GCC diagnostic ignored "-Wpedantic"
  41 #endif
  42 #include <infiniband/verbs.h>
  43 #ifdef PEDANTIC
  44 #pragma GCC diagnostic error "-Wpedantic"
  45 #endif
  46
  47 #include <rte_ethdev.h>
  48 #include <rte_flow.h>
  49 #include <rte_flow_driver.h>
  50 #include <rte_malloc.h>
  51
  52 #include "mlx5.h"
  53 #include "mlx5_prm.h"
  54
  55 static int
  56 mlx5_flow_create_eth(const struct rte_flow_item *item,
  57                      const void *default_mask,
  58                      void *data);
  59
  60 static int
  61 mlx5_flow_create_vlan(const struct rte_flow_item *item,
  62                       const void *default_mask,
  63                       void *data);
  64
  65 static int
  66 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
  67                       const void *default_mask,
  68                       void *data);
  69
  70 static int
  71 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
  72                       const void *default_mask,
  73                       void *data);
  74
  75 static int
  76 mlx5_flow_create_udp(const struct rte_flow_item *item,
  77                      const void *default_mask,
  78                      void *data);
  79
  80 static int
  81 mlx5_flow_create_tcp(const struct rte_flow_item *item,
  82                      const void *default_mask,
  83                      void *data);
  84
  85 static int
  86 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
  87                        const void *default_mask,
  88                        void *data);
  89
  90 struct rte_flow {
  91         LIST_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
  92         struct ibv_exp_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
  93         struct ibv_exp_rwq_ind_table *ind_table; /**< Indirection table. */
  94         struct ibv_qp *qp; /**< Verbs queue pair. */
  95         struct ibv_exp_flow *ibv_flow; /**< Verbs flow. */
  96         struct ibv_exp_wq *wq; /**< Verbs work queue. */
  97         struct ibv_cq *cq; /**< Verbs completion queue. */
  98         struct rxq *rxq; /**< Pointer to the queue, NULL if drop queue. */
  99         uint32_t mark:1; /**< Set if the flow is marked. */
 100 };
 101
 102 /** Static initializer for items. */
 103 #define ITEMS(...) \
 104         (const enum rte_flow_item_type []){ \
 105                 __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \
 106         }
 107
 108 /** Structure to generate a simple graph of layers supported by the NIC. */
 109 struct mlx5_flow_items {
 110         /** List of possible actions for these items. */
 111         const enum rte_flow_action_type *const actions;
 112         /** Bit-masks corresponding to the possibilities for the item. */
 113         const void *mask;
 114         /**
 115          * Default bit-masks to use when item->mask is not provided. When
 116          * \default_mask is also NULL, the full supported bit-mask (\mask) is
 117          * used instead.
 118          */
 119         const void *default_mask;
 120         /** Bit-masks size in bytes. */
 121         const unsigned int mask_sz;
 122         /**
 123          * Conversion function from rte_flow to NIC specific flow.
 124          *
 125          * @param item
 126          *   rte_flow item to convert.
 127          * @param default_mask
 128          *   Default bit-masks to use when item->mask is not provided.
 129          * @param data
 130          *   Internal structure to store the conversion.
 131          *
 132          * @return
 133          *   0 on success, negative value otherwise.
 134          */
 135         int (*convert)(const struct rte_flow_item *item,
 136                        const void *default_mask,
 137                        void *data);
 138         /** Size in bytes of the destination structure. */
 139         const unsigned int dst_sz;
 140         /** List of possible following items.  */
 141         const enum rte_flow_item_type *const items;
 142 };
 143
 144 /** Valid action for this PMD. */
 145 static const enum rte_flow_action_type valid_actions[] = {
 146         RTE_FLOW_ACTION_TYPE_DROP,
 147         RTE_FLOW_ACTION_TYPE_QUEUE,
 148         RTE_FLOW_ACTION_TYPE_MARK,
 149         RTE_FLOW_ACTION_TYPE_END,
 150 };
 151
 152 /** Graph of supported items and associated actions. */
 153 static const struct mlx5_flow_items mlx5_flow_items[] = {
 154         [RTE_FLOW_ITEM_TYPE_END] = {
 155                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 156                                RTE_FLOW_ITEM_TYPE_VXLAN),
 157         },
 158         [RTE_FLOW_ITEM_TYPE_ETH] = {
 159                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN,
 160                                RTE_FLOW_ITEM_TYPE_IPV4,
 161                                RTE_FLOW_ITEM_TYPE_IPV6),
 162                 .actions = valid_actions,
 163                 .mask = &(const struct rte_flow_item_eth){
 164                         .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 165                         .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 166                         .type = -1,
 167                 },
 168                 .default_mask = &rte_flow_item_eth_mask,
 169                 .mask_sz = sizeof(struct rte_flow_item_eth),
 170                 .convert = mlx5_flow_create_eth,
 171                 .dst_sz = sizeof(struct ibv_exp_flow_spec_eth),
 172         },
 173         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 174                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4,
 175                                RTE_FLOW_ITEM_TYPE_IPV6),
 176                 .actions = valid_actions,
 177                 .mask = &(const struct rte_flow_item_vlan){
 178                         .tci = -1,
 179                 },
 180                 .default_mask = &rte_flow_item_vlan_mask,
 181                 .mask_sz = sizeof(struct rte_flow_item_vlan),
 182                 .convert = mlx5_flow_create_vlan,
 183                 .dst_sz = 0,
 184         },
 185         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 186                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 187                                RTE_FLOW_ITEM_TYPE_TCP),
 188                 .actions = valid_actions,
 189                 .mask = &(const struct rte_flow_item_ipv4){
 190                         .hdr = {
 191                                 .src_addr = -1,
 192                                 .dst_addr = -1,
 193                                 .type_of_service = -1,
 194                                 .next_proto_id = -1,
 195                         },
 196                 },
 197                 .default_mask = &rte_flow_item_ipv4_mask,
 198                 .mask_sz = sizeof(struct rte_flow_item_ipv4),
 199                 .convert = mlx5_flow_create_ipv4,
 200                 .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv4_ext),
 201         },
 202         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 203                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 204                                RTE_FLOW_ITEM_TYPE_TCP),
 205                 .actions = valid_actions,
 206                 .mask = &(const struct rte_flow_item_ipv6){
 207                         .hdr = {
 208                                 .src_addr = {
 209                                         0xff, 0xff, 0xff, 0xff,
 210                                         0xff, 0xff, 0xff, 0xff,
 211                                         0xff, 0xff, 0xff, 0xff,
 212                                         0xff, 0xff, 0xff, 0xff,
 213                                 },
 214                                 .dst_addr = {
 215                                         0xff, 0xff, 0xff, 0xff,
 216                                         0xff, 0xff, 0xff, 0xff,
 217                                         0xff, 0xff, 0xff, 0xff,
 218                                         0xff, 0xff, 0xff, 0xff,
 219                                 },
 220                                 .vtc_flow = -1,
 221                                 .proto = -1,
 222                                 .hop_limits = -1,
 223                         },
 224                 },
 225                 .default_mask = &rte_flow_item_ipv6_mask,
 226                 .mask_sz = sizeof(struct rte_flow_item_ipv6),
 227                 .convert = mlx5_flow_create_ipv6,
 228                 .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv6_ext),
 229         },
 230         [RTE_FLOW_ITEM_TYPE_UDP] = {
 231                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN),
 232                 .actions = valid_actions,
 233                 .mask = &(const struct rte_flow_item_udp){
 234                         .hdr = {
 235                                 .src_port = -1,
 236                                 .dst_port = -1,
 237                         },
 238                 },
 239                 .default_mask = &rte_flow_item_udp_mask,
 240                 .mask_sz = sizeof(struct rte_flow_item_udp),
 241                 .convert = mlx5_flow_create_udp,
 242                 .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp),
 243         },
 244         [RTE_FLOW_ITEM_TYPE_TCP] = {
 245                 .actions = valid_actions,
 246                 .mask = &(const struct rte_flow_item_tcp){
 247                         .hdr = {
 248                                 .src_port = -1,
 249                                 .dst_port = -1,
 250                         },
 251                 },
 252                 .default_mask = &rte_flow_item_tcp_mask,
 253                 .mask_sz = sizeof(struct rte_flow_item_tcp),
 254                 .convert = mlx5_flow_create_tcp,
 255                 .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp),
 256         },
 257         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 258                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH),
 259                 .actions = valid_actions,
 260                 .mask = &(const struct rte_flow_item_vxlan){
 261                         .vni = "\xff\xff\xff",
 262                 },
 263                 .default_mask = &rte_flow_item_vxlan_mask,
 264                 .mask_sz = sizeof(struct rte_flow_item_vxlan),
 265                 .convert = mlx5_flow_create_vxlan,
 266                 .dst_sz = sizeof(struct ibv_exp_flow_spec_tunnel),
 267         },
 268 };
 269
 270 /** Structure to pass to the conversion function. */
 271 struct mlx5_flow {
 272         struct ibv_exp_flow_attr *ibv_attr; /**< Verbs attribute. */
 273         unsigned int offset; /**< Offset in bytes in the ibv_attr buffer. */
 274         uint32_t inner; /**< Set once VXLAN is encountered. */
 275 };
 276
 277 struct mlx5_flow_action {
 278         uint32_t queue:1; /**< Target is a receive queue. */
 279         uint32_t drop:1; /**< Target is a drop queue. */
 280         uint32_t mark:1; /**< Mark is present in the flow. */
 281         uint32_t queue_id; /**< Identifier of the queue. */
 282         uint32_t mark_id; /**< Mark identifier. */
 283 };
 284
 285 /**
 286  * Check support for a given item.
 287  *
 288  * @param item[in]
 289  *   Item specification.
 290  * @param mask[in]
 291  *   Bit-masks covering supported fields to compare with spec, last and mask in
 292  *   \item.
 293  * @param size
 294  *   Bit-Mask size in bytes.
 295  *
 296  * @return
 297  *   0 on success.
 298  */
 299 static int
 300 mlx5_flow_item_validate(const struct rte_flow_item *item,
 301                         const uint8_t *mask, unsigned int size)
 302 {
 303         int ret = 0;
 304
 305         if (!item->spec && (item->mask || item->last))
 306                 return -1;
 307         if (item->spec && !item->mask) {
 308                 unsigned int i;
 309                 const uint8_t *spec = item->spec;
 310
 311                 for (i = 0; i < size; ++i)
 312                         if ((spec[i] | mask[i]) != mask[i])
 313                                 return -1;
 314         }
 315         if (item->last && !item->mask) {
 316                 unsigned int i;
 317                 const uint8_t *spec = item->last;
 318
 319                 for (i = 0; i < size; ++i)
 320                         if ((spec[i] | mask[i]) != mask[i])
 321                                 return -1;
 322         }
 323         if (item->mask) {
 324                 unsigned int i;
 325                 const uint8_t *spec = item->mask;
 326
 327                 for (i = 0; i < size; ++i)
 328                         if ((spec[i] | mask[i]) != mask[i])
 329                                 return -1;
 330         }
 331         if (item->spec && item->last) {
 332                 uint8_t spec[size];
 333                 uint8_t last[size];
 334                 const uint8_t *apply = mask;
 335                 unsigned int i;
 336
 337                 if (item->mask)
 338                         apply = item->mask;
 339                 for (i = 0; i < size; ++i) {
 340                         spec[i] = ((const uint8_t *)item->spec)[i] & apply[i];
 341                         last[i] = ((const uint8_t *)item->last)[i] & apply[i];
 342                 }
 343                 ret = memcmp(spec, last, size);
 344         }
 345         return ret;
 346 }
 347
 348 /**
 349  * Validate a flow supported by the NIC.
 350  *
 351  * @param priv
 352  *   Pointer to private structure.
 353  * @param[in] attr
 354  *   Flow rule attributes.
 355  * @param[in] pattern
 356  *   Pattern specification (list terminated by the END pattern item).
 357  * @param[in] actions
 358  *   Associated actions (list terminated by the END action).
 359  * @param[out] error
 360  *   Perform verbose error reporting if not NULL.
 361  * @param[in, out] flow
 362  *   Flow structure to update.
 363  *
 364  * @return
 365  *   0 on success, a negative errno value otherwise and rte_errno is set.
 366  */
 367 static int
 368 priv_flow_validate(struct priv *priv,
 369                    const struct rte_flow_attr *attr,
 370                    const struct rte_flow_item items[],
 371                    const struct rte_flow_action actions[],
 372                    struct rte_flow_error *error,
 373                    struct mlx5_flow *flow)
 374 {
 375         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
 376         struct mlx5_flow_action action = {
 377                 .queue = 0,
 378                 .drop = 0,
 379                 .mark = 0,
 380         };
 381
 382         (void)priv;
 383         if (attr->group) {
 384                 rte_flow_error_set(error, ENOTSUP,
 385                                    RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
 386                                    NULL,
 387                                    "groups are not supported");
 388                 return -rte_errno;
 389         }
 390         if (attr->priority) {
 391                 rte_flow_error_set(error, ENOTSUP,
 392                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 393                                    NULL,
 394                                    "priorities are not supported");
 395                 return -rte_errno;
 396         }
 397         if (attr->egress) {
 398                 rte_flow_error_set(error, ENOTSUP,
 399                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
 400                                    NULL,
 401                                    "egress is not supported");
 402                 return -rte_errno;
 403         }
 404         if (!attr->ingress) {
 405                 rte_flow_error_set(error, ENOTSUP,
 406                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 407                                    NULL,
 408                                    "only ingress is supported");
 409                 return -rte_errno;
 410         }
 411         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
 412                 const struct mlx5_flow_items *token = NULL;
 413                 unsigned int i;
 414                 int err;
 415
 416                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
 417                         continue;
 418                 for (i = 0;
 419                      cur_item->items &&
 420                      cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END;
 421                      ++i) {
 422                         if (cur_item->items[i] == items->type) {
 423                                 token = &mlx5_flow_items[items->type];
 424                                 break;
 425                         }
 426                 }
 427                 if (!token)
 428                         goto exit_item_not_supported;
 429                 cur_item = token;
 430                 err = mlx5_flow_item_validate(items,
 431                                               (const uint8_t *)cur_item->mask,
 432                                               cur_item->mask_sz);
 433                 if (err)
 434                         goto exit_item_not_supported;
 435                 if (flow->ibv_attr && cur_item->convert) {
 436                         err = cur_item->convert(items,
 437                                                 (cur_item->default_mask ?
 438                                                  cur_item->default_mask :
 439                                                  cur_item->mask),
 440                                                 flow);
 441                         if (err)
 442                                 goto exit_item_not_supported;
 443                 }
 444                 flow->offset += cur_item->dst_sz;
 445         }
 446         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
 447                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
 448                         continue;
 449                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
 450                         action.drop = 1;
 451                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
 452                         const struct rte_flow_action_queue *queue =
 453                                 (const struct rte_flow_action_queue *)
 454                                 actions->conf;
 455
 456                         if (!queue || (queue->index > (priv->rxqs_n - 1)))
 457                                 goto exit_action_not_supported;
 458                         action.queue = 1;
 459                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
 460                         const struct rte_flow_action_mark *mark =
 461                                 (const struct rte_flow_action_mark *)
 462                                 actions->conf;
 463
 464                         if (!mark) {
 465                                 rte_flow_error_set(error, EINVAL,
 466                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 467                                                    actions,
 468                                                    "mark must be defined");
 469                                 return -rte_errno;
 470                         } else if (mark->id >= MLX5_FLOW_MARK_MAX) {
 471                                 rte_flow_error_set(error, ENOTSUP,
 472                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 473                                                    actions,
 474                                                    "mark must be between 0"
 475                                                    " and 16777199");
 476                                 return -rte_errno;
 477                         }
 478                         action.mark = 1;
 479                 } else {
 480                         goto exit_action_not_supported;
 481                 }
 482         }
 483         if (action.mark && !flow->ibv_attr && !action.drop)
 484                 flow->offset += sizeof(struct ibv_exp_flow_spec_action_tag);
 485         if (!action.queue && !action.drop) {
 486                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
 487                                    NULL, "no valid action");
 488                 return -rte_errno;
 489         }
 490         return 0;
 491 exit_item_not_supported:
 492         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 493                            items, "item not supported");
 494         return -rte_errno;
 495 exit_action_not_supported:
 496         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
 497                            actions, "action not supported");
 498         return -rte_errno;
 499 }
 500
 501 /**
 502  * Validate a flow supported by the NIC.
 503  *
 504  * @see rte_flow_validate()
 505  * @see rte_flow_ops
 506  */
 507 int
 508 mlx5_flow_validate(struct rte_eth_dev *dev,
 509                    const struct rte_flow_attr *attr,
 510                    const struct rte_flow_item items[],
 511                    const struct rte_flow_action actions[],
 512                    struct rte_flow_error *error)
 513 {
 514         struct priv *priv = dev->data->dev_private;
 515         int ret;
 516         struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr) };
 517
 518         priv_lock(priv);
 519         ret = priv_flow_validate(priv, attr, items, actions, error, &flow);
 520         priv_unlock(priv);
 521         return ret;
 522 }
 523
 524 /**
 525  * Convert Ethernet item to Verbs specification.
 526  *
 527  * @param item[in]
 528  *   Item specification.
 529  * @param default_mask[in]
 530  *   Default bit-masks to use when item->mask is not provided.
 531  * @param data[in, out]
 532  *   User structure.
 533  */
 534 static int
 535 mlx5_flow_create_eth(const struct rte_flow_item *item,
 536                      const void *default_mask,
 537                      void *data)
 538 {
 539         const struct rte_flow_item_eth *spec = item->spec;
 540         const struct rte_flow_item_eth *mask = item->mask;
 541         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 542         struct ibv_exp_flow_spec_eth *eth;
 543         const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth);
 544         unsigned int i;
 545
 546         ++flow->ibv_attr->num_of_specs;
 547         flow->ibv_attr->priority = 2;
 548         eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 549         *eth = (struct ibv_exp_flow_spec_eth) {
 550                 .type = flow->inner | IBV_EXP_FLOW_SPEC_ETH,
 551                 .size = eth_size,
 552         };
 553         if (!spec)
 554                 return 0;
 555         if (!mask)
 556                 mask = default_mask;
 557         memcpy(eth->val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN);
 558         memcpy(eth->val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN);
 559         eth->val.ether_type = spec->type;
 560         memcpy(eth->mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN);
 561         memcpy(eth->mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN);
 562         eth->mask.ether_type = mask->type;
 563         /* Remove unwanted bits from values. */
 564         for (i = 0; i < ETHER_ADDR_LEN; ++i) {
 565                 eth->val.dst_mac[i] &= eth->mask.dst_mac[i];
 566                 eth->val.src_mac[i] &= eth->mask.src_mac[i];
 567         }
 568         eth->val.ether_type &= eth->mask.ether_type;
 569         return 0;
 570 }
 571
 572 /**
 573  * Convert VLAN item to Verbs specification.
 574  *
 575  * @param item[in]
 576  *   Item specification.
 577  * @param default_mask[in]
 578  *   Default bit-masks to use when item->mask is not provided.
 579  * @param data[in, out]
 580  *   User structure.
 581  */
 582 static int
 583 mlx5_flow_create_vlan(const struct rte_flow_item *item,
 584                       const void *default_mask,
 585                       void *data)
 586 {
 587         const struct rte_flow_item_vlan *spec = item->spec;
 588         const struct rte_flow_item_vlan *mask = item->mask;
 589         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 590         struct ibv_exp_flow_spec_eth *eth;
 591         const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth);
 592
 593         eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset - eth_size);
 594         if (!spec)
 595                 return 0;
 596         if (!mask)
 597                 mask = default_mask;
 598         eth->val.vlan_tag = spec->tci;
 599         eth->mask.vlan_tag = mask->tci;
 600         eth->val.vlan_tag &= eth->mask.vlan_tag;
 601         return 0;
 602 }
 603
 604 /**
 605  * Convert IPv4 item to Verbs specification.
 606  *
 607  * @param item[in]
 608  *   Item specification.
 609  * @param default_mask[in]
 610  *   Default bit-masks to use when item->mask is not provided.
 611  * @param data[in, out]
 612  *   User structure.
 613  */
 614 static int
 615 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
 616                       const void *default_mask,
 617                       void *data)
 618 {
 619         const struct rte_flow_item_ipv4 *spec = item->spec;
 620         const struct rte_flow_item_ipv4 *mask = item->mask;
 621         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 622         struct ibv_exp_flow_spec_ipv4_ext *ipv4;
 623         unsigned int ipv4_size = sizeof(struct ibv_exp_flow_spec_ipv4_ext);
 624
 625         ++flow->ibv_attr->num_of_specs;
 626         flow->ibv_attr->priority = 1;
 627         ipv4 = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 628         *ipv4 = (struct ibv_exp_flow_spec_ipv4_ext) {
 629                 .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV4_EXT,
 630                 .size = ipv4_size,
 631         };
 632         if (!spec)
 633                 return 0;
 634         if (!mask)
 635                 mask = default_mask;
 636         ipv4->val = (struct ibv_exp_flow_ipv4_ext_filter){
 637                 .src_ip = spec->hdr.src_addr,
 638                 .dst_ip = spec->hdr.dst_addr,
 639                 .proto = spec->hdr.next_proto_id,
 640                 .tos = spec->hdr.type_of_service,
 641         };
 642         ipv4->mask = (struct ibv_exp_flow_ipv4_ext_filter){
 643                 .src_ip = mask->hdr.src_addr,
 644                 .dst_ip = mask->hdr.dst_addr,
 645                 .proto = mask->hdr.next_proto_id,
 646                 .tos = mask->hdr.type_of_service,
 647         };
 648         /* Remove unwanted bits from values. */
 649         ipv4->val.src_ip &= ipv4->mask.src_ip;
 650         ipv4->val.dst_ip &= ipv4->mask.dst_ip;
 651         ipv4->val.proto &= ipv4->mask.proto;
 652         ipv4->val.tos &= ipv4->mask.tos;
 653         return 0;
 654 }
 655
 656 /**
 657  * Convert IPv6 item to Verbs specification.
 658  *
 659  * @param item[in]
 660  *   Item specification.
 661  * @param default_mask[in]
 662  *   Default bit-masks to use when item->mask is not provided.
 663  * @param data[in, out]
 664  *   User structure.
 665  */
 666 static int
 667 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
 668                       const void *default_mask,
 669                       void *data)
 670 {
 671         const struct rte_flow_item_ipv6 *spec = item->spec;
 672         const struct rte_flow_item_ipv6 *mask = item->mask;
 673         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 674         struct ibv_exp_flow_spec_ipv6_ext *ipv6;
 675         unsigned int ipv6_size = sizeof(struct ibv_exp_flow_spec_ipv6_ext);
 676
 677         ++flow->ibv_attr->num_of_specs;
 678         flow->ibv_attr->priority = 1;
 679         ipv6 = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 680         *ipv6 = (struct ibv_exp_flow_spec_ipv6_ext) {
 681                 .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV6_EXT,
 682                 .size = ipv6_size,
 683         };
 684         if (!spec)
 685                 return 0;
 686         if (!mask)
 687                 mask = default_mask;
 688         memcpy(ipv6->val.src_ip, spec->hdr.src_addr,
 689                RTE_DIM(ipv6->val.src_ip));
 690         memcpy(ipv6->val.dst_ip, spec->hdr.dst_addr,
 691                RTE_DIM(ipv6->val.dst_ip));
 692         memcpy(ipv6->mask.src_ip, mask->hdr.src_addr,
 693                RTE_DIM(ipv6->mask.src_ip));
 694         memcpy(ipv6->mask.dst_ip, mask->hdr.dst_addr,
 695                RTE_DIM(ipv6->mask.dst_ip));
 696         ipv6->mask.flow_label = mask->hdr.vtc_flow;
 697         ipv6->mask.next_hdr = mask->hdr.proto;
 698         ipv6->mask.hop_limit = mask->hdr.hop_limits;
 699         ipv6->val.flow_label &= ipv6->mask.flow_label;
 700         ipv6->val.next_hdr &= ipv6->mask.next_hdr;
 701         ipv6->val.hop_limit &= ipv6->mask.hop_limit;
 702         return 0;
 703 }
 704
 705 /**
 706  * Convert UDP item to Verbs specification.
 707  *
 708  * @param item[in]
 709  *   Item specification.
 710  * @param default_mask[in]
 711  *   Default bit-masks to use when item->mask is not provided.
 712  * @param data[in, out]
 713  *   User structure.
 714  */
 715 static int
 716 mlx5_flow_create_udp(const struct rte_flow_item *item,
 717                      const void *default_mask,
 718                      void *data)
 719 {
 720         const struct rte_flow_item_udp *spec = item->spec;
 721         const struct rte_flow_item_udp *mask = item->mask;
 722         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 723         struct ibv_exp_flow_spec_tcp_udp *udp;
 724         unsigned int udp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp);
 725
 726         ++flow->ibv_attr->num_of_specs;
 727         flow->ibv_attr->priority = 0;
 728         udp = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 729         *udp = (struct ibv_exp_flow_spec_tcp_udp) {
 730                 .type = flow->inner | IBV_EXP_FLOW_SPEC_UDP,
 731                 .size = udp_size,
 732         };
 733         if (!spec)
 734                 return 0;
 735         if (!mask)
 736                 mask = default_mask;
 737         udp->val.dst_port = spec->hdr.dst_port;
 738         udp->val.src_port = spec->hdr.src_port;
 739         udp->mask.dst_port = mask->hdr.dst_port;
 740         udp->mask.src_port = mask->hdr.src_port;
 741         /* Remove unwanted bits from values. */
 742         udp->val.src_port &= udp->mask.src_port;
 743         udp->val.dst_port &= udp->mask.dst_port;
 744         return 0;
 745 }
 746
 747 /**
 748  * Convert TCP item to Verbs specification.
 749  *
 750  * @param item[in]
 751  *   Item specification.
 752  * @param default_mask[in]
 753  *   Default bit-masks to use when item->mask is not provided.
 754  * @param data[in, out]
 755  *   User structure.
 756  */
 757 static int
 758 mlx5_flow_create_tcp(const struct rte_flow_item *item,
 759                      const void *default_mask,
 760                      void *data)
 761 {
 762         const struct rte_flow_item_tcp *spec = item->spec;
 763         const struct rte_flow_item_tcp *mask = item->mask;
 764         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 765         struct ibv_exp_flow_spec_tcp_udp *tcp;
 766         unsigned int tcp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp);
 767
 768         ++flow->ibv_attr->num_of_specs;
 769         flow->ibv_attr->priority = 0;
 770         tcp = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 771         *tcp = (struct ibv_exp_flow_spec_tcp_udp) {
 772                 .type = flow->inner | IBV_EXP_FLOW_SPEC_TCP,
 773                 .size = tcp_size,
 774         };
 775         if (!spec)
 776                 return 0;
 777         if (!mask)
 778                 mask = default_mask;
 779         tcp->val.dst_port = spec->hdr.dst_port;
 780         tcp->val.src_port = spec->hdr.src_port;
 781         tcp->mask.dst_port = mask->hdr.dst_port;
 782         tcp->mask.src_port = mask->hdr.src_port;
 783         /* Remove unwanted bits from values. */
 784         tcp->val.src_port &= tcp->mask.src_port;
 785         tcp->val.dst_port &= tcp->mask.dst_port;
 786         return 0;
 787 }
 788
 789 /**
 790  * Convert VXLAN item to Verbs specification.
 791  *
 792  * @param item[in]
 793  *   Item specification.
 794  * @param default_mask[in]
 795  *   Default bit-masks to use when item->mask is not provided.
 796  * @param data[in, out]
 797  *   User structure.
 798  */
 799 static int
 800 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
 801                        const void *default_mask,
 802                        void *data)
 803 {
 804         const struct rte_flow_item_vxlan *spec = item->spec;
 805         const struct rte_flow_item_vxlan *mask = item->mask;
 806         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 807         struct ibv_exp_flow_spec_tunnel *vxlan;
 808         unsigned int size = sizeof(struct ibv_exp_flow_spec_tunnel);
 809         union vni {
 810                 uint32_t vlan_id;
 811                 uint8_t vni[4];
 812         } id;
 813
 814         ++flow->ibv_attr->num_of_specs;
 815         flow->ibv_attr->priority = 0;
 816         id.vni[0] = 0;
 817         vxlan = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 818         *vxlan = (struct ibv_exp_flow_spec_tunnel) {
 819                 .type = flow->inner | IBV_EXP_FLOW_SPEC_VXLAN_TUNNEL,
 820                 .size = size,
 821         };
 822         flow->inner = IBV_EXP_FLOW_SPEC_INNER;
 823         if (!spec)
 824                 return 0;
 825         if (!mask)
 826                 mask = default_mask;
 827         memcpy(&id.vni[1], spec->vni, 3);
 828         vxlan->val.tunnel_id = id.vlan_id;
 829         memcpy(&id.vni[1], mask->vni, 3);
 830         vxlan->mask.tunnel_id = id.vlan_id;
 831         /* Remove unwanted bits from values. */
 832         vxlan->val.tunnel_id &= vxlan->mask.tunnel_id;
 833         return 0;
 834 }
 835
 836 /**
 837  * Convert mark/flag action to Verbs specification.
 838  *
 839  * @param flow
 840  *   Pointer to MLX5 flow structure.
 841  * @param mark_id
 842  *   Mark identifier.
 843  */
 844 static int
 845 mlx5_flow_create_flag_mark(struct mlx5_flow *flow, uint32_t mark_id)
 846 {
 847         struct ibv_exp_flow_spec_action_tag *tag;
 848         unsigned int size = sizeof(struct ibv_exp_flow_spec_action_tag);
 849
 850         tag = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 851         *tag = (struct ibv_exp_flow_spec_action_tag){
 852                 .type = IBV_EXP_FLOW_SPEC_ACTION_TAG,
 853                 .size = size,
 854                 .tag_id = mlx5_flow_mark_set(mark_id),
 855         };
 856         ++flow->ibv_attr->num_of_specs;
 857         return 0;
 858 }
 859
 860 /**
 861  * Complete flow rule creation.
 862  *
 863  * @param priv
 864  *   Pointer to private structure.
 865  * @param ibv_attr
 866  *   Verbs flow attributes.
 867  * @param action
 868  *   Target action structure.
 869  * @param[out] error
 870  *   Perform verbose error reporting if not NULL.
 871  *
 872  * @return
 873  *   A flow if the rule could be created.
 874  */
 875 static struct rte_flow *
 876 priv_flow_create_action_queue(struct priv *priv,
 877                               struct ibv_exp_flow_attr *ibv_attr,
 878                               struct mlx5_flow_action *action,
 879                               struct rte_flow_error *error)
 880 {
 881         struct rxq_ctrl *rxq;
 882         struct rte_flow *rte_flow;
 883
 884         assert(priv->pd);
 885         assert(priv->ctx);
 886         rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow), 0);
 887         if (!rte_flow) {
 888                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
 889                                    NULL, "cannot allocate flow memory");
 890                 return NULL;
 891         }
 892         if (action->drop) {
 893                 rte_flow->cq =
 894                         ibv_exp_create_cq(priv->ctx, 1, NULL, NULL, 0,
 895                                           &(struct ibv_exp_cq_init_attr){
 896                                                   .comp_mask = 0,
 897                                           });
 898                 if (!rte_flow->cq) {
 899                         rte_flow_error_set(error, ENOMEM,
 900                                            RTE_FLOW_ERROR_TYPE_HANDLE,
 901                                            NULL, "cannot allocate CQ");
 902                         goto error;
 903                 }
 904                 rte_flow->wq = ibv_exp_create_wq(priv->ctx,
 905                                                  &(struct ibv_exp_wq_init_attr){
 906                                                  .wq_type = IBV_EXP_WQT_RQ,
 907                                                  .max_recv_wr = 1,
 908                                                  .max_recv_sge = 1,
 909                                                  .pd = priv->pd,
 910                                                  .cq = rte_flow->cq,
 911                                                  });
 912                 if (!rte_flow->wq) {
 913                         rte_flow_error_set(error, ENOMEM,
 914                                            RTE_FLOW_ERROR_TYPE_HANDLE,
 915                                            NULL, "cannot allocate WQ");
 916                         goto error;
 917                 }
 918         } else {
 919                 rxq = container_of((*priv->rxqs)[action->queue_id],
 920                                    struct rxq_ctrl, rxq);
 921                 rte_flow->rxq = &rxq->rxq;
 922                 rxq->rxq.mark |= action->mark;
 923                 rte_flow->wq = rxq->wq;
 924         }
 925         rte_flow->mark = action->mark;
 926         rte_flow->ibv_attr = ibv_attr;
 927         rte_flow->ind_table = ibv_exp_create_rwq_ind_table(
 928                 priv->ctx,
 929                 &(struct ibv_exp_rwq_ind_table_init_attr){
 930                         .pd = priv->pd,
 931                         .log_ind_tbl_size = 0,
 932                         .ind_tbl = &rte_flow->wq,
 933                         .comp_mask = 0,
 934                 });
 935         if (!rte_flow->ind_table) {
 936                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
 937                                    NULL, "cannot allocate indirection table");
 938                 goto error;
 939         }
 940         rte_flow->qp = ibv_exp_create_qp(
 941                 priv->ctx,
 942                 &(struct ibv_exp_qp_init_attr){
 943                         .qp_type = IBV_QPT_RAW_PACKET,
 944                         .comp_mask =
 945                                 IBV_EXP_QP_INIT_ATTR_PD |
 946                                 IBV_EXP_QP_INIT_ATTR_PORT |
 947                                 IBV_EXP_QP_INIT_ATTR_RX_HASH,
 948                         .pd = priv->pd,
 949                         .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){
 950                                 .rx_hash_function =
 951                                         IBV_EXP_RX_HASH_FUNC_TOEPLITZ,
 952                                 .rx_hash_key_len = rss_hash_default_key_len,
 953                                 .rx_hash_key = rss_hash_default_key,
 954                                 .rx_hash_fields_mask = 0,
 955                                 .rwq_ind_tbl = rte_flow->ind_table,
 956                         },
 957                         .port_num = priv->port,
 958                 });
 959         if (!rte_flow->qp) {
 960                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
 961                                    NULL, "cannot allocate QP");
 962                 goto error;
 963         }
 964         if (!priv->started)
 965                 return rte_flow;
 966         rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp,
 967                                                  rte_flow->ibv_attr);
 968         if (!rte_flow->ibv_flow) {
 969                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
 970                                    NULL, "flow rule creation failure");
 971                 goto error;
 972         }
 973         return rte_flow;
 974 error:
 975         assert(rte_flow);
 976         if (rte_flow->qp)
 977                 ibv_destroy_qp(rte_flow->qp);
 978         if (rte_flow->ind_table)
 979                 ibv_exp_destroy_rwq_ind_table(rte_flow->ind_table);
 980         if (!rte_flow->rxq && rte_flow->wq)
 981                 ibv_exp_destroy_wq(rte_flow->wq);
 982         if (!rte_flow->rxq && rte_flow->cq)
 983                 ibv_destroy_cq(rte_flow->cq);
 984         rte_free(rte_flow);
 985         return NULL;
 986 }
 987
 988 /**
 989  * Convert a flow.
 990  *
 991  * @param priv
 992  *   Pointer to private structure.
 993  * @param[in] attr
 994  *   Flow rule attributes.
 995  * @param[in] pattern
 996  *   Pattern specification (list terminated by the END pattern item).
 997  * @param[in] actions
 998  *   Associated actions (list terminated by the END action).
 999  * @param[out] error
1000  *   Perform verbose error reporting if not NULL.
1001  *
1002  * @return
1003  *   A flow on success, NULL otherwise.
1004  */
1005 static struct rte_flow *
1006 priv_flow_create(struct priv *priv,
1007                  const struct rte_flow_attr *attr,
1008                  const struct rte_flow_item items[],
1009                  const struct rte_flow_action actions[],
1010                  struct rte_flow_error *error)
1011 {
1012         struct rte_flow *rte_flow;
1013         struct mlx5_flow_action action;
1014         struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr), };
1015         int err;
1016
1017         err = priv_flow_validate(priv, attr, items, actions, error, &flow);
1018         if (err)
1019                 goto exit;
1020         flow.ibv_attr = rte_malloc(__func__, flow.offset, 0);
1021         flow.offset = sizeof(struct ibv_exp_flow_attr);
1022         if (!flow.ibv_attr) {
1023                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1024                                    NULL, "cannot allocate ibv_attr memory");
1025                 goto exit;
1026         }
1027         *flow.ibv_attr = (struct ibv_exp_flow_attr){
1028                 .type = IBV_EXP_FLOW_ATTR_NORMAL,
1029                 .size = sizeof(struct ibv_exp_flow_attr),
1030                 .priority = attr->priority,
1031                 .num_of_specs = 0,
1032                 .port = 0,
1033                 .flags = 0,
1034                 .reserved = 0,
1035         };
1036         flow.inner = 0;
1037         claim_zero(priv_flow_validate(priv, attr, items, actions,
1038                                       error, &flow));
1039         action = (struct mlx5_flow_action){
1040                 .queue = 0,
1041                 .drop = 0,
1042                 .mark = 0,
1043                 .mark_id = MLX5_FLOW_MARK_DEFAULT,
1044         };
1045         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
1046                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
1047                         continue;
1048                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
1049                         action.queue = 1;
1050                         action.queue_id =
1051                                 ((const struct rte_flow_action_queue *)
1052                                  actions->conf)->index;
1053                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
1054                         action.drop = 1;
1055                         action.mark = 0;
1056                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
1057                         const struct rte_flow_action_mark *mark =
1058                                 (const struct rte_flow_action_mark *)
1059                                 actions->conf;
1060
1061                         if (mark)
1062                                 action.mark_id = mark->id;
1063                         action.mark = !action.drop;
1064                 } else {
1065                         rte_flow_error_set(error, ENOTSUP,
1066                                            RTE_FLOW_ERROR_TYPE_ACTION,
1067                                            actions, "unsupported action");
1068                         goto exit;
1069                 }
1070         }
1071         if (action.mark) {
1072                 mlx5_flow_create_flag_mark(&flow, action.mark_id);
1073                 flow.offset += sizeof(struct ibv_exp_flow_spec_action_tag);
1074         }
1075         rte_flow = priv_flow_create_action_queue(priv, flow.ibv_attr,
1076                                                  &action, error);
1077         if (!rte_flow)
1078                 goto exit;
1079         return rte_flow;
1080 exit:
1081         rte_free(flow.ibv_attr);
1082         return NULL;
1083 }
1084
1085 /**
1086  * Create a flow.
1087  *
1088  * @see rte_flow_create()
1089  * @see rte_flow_ops
1090  */
1091 struct rte_flow *
1092 mlx5_flow_create(struct rte_eth_dev *dev,
1093                  const struct rte_flow_attr *attr,
1094                  const struct rte_flow_item items[],
1095                  const struct rte_flow_action actions[],
1096                  struct rte_flow_error *error)
1097 {
1098         struct priv *priv = dev->data->dev_private;
1099         struct rte_flow *flow;
1100
1101         priv_lock(priv);
1102         flow = priv_flow_create(priv, attr, items, actions, error);
1103         if (flow) {
1104                 LIST_INSERT_HEAD(&priv->flows, flow, next);
1105                 DEBUG("Flow created %p", (void *)flow);
1106         }
1107         priv_unlock(priv);
1108         return flow;
1109 }
1110
1111 /**
1112  * Destroy a flow.
1113  *
1114  * @param priv
1115  *   Pointer to private structure.
1116  * @param[in] flow
1117  *   Flow to destroy.
1118  */
1119 static void
1120 priv_flow_destroy(struct priv *priv,
1121                   struct rte_flow *flow)
1122 {
1123         (void)priv;
1124         LIST_REMOVE(flow, next);
1125         if (flow->ibv_flow)
1126                 claim_zero(ibv_exp_destroy_flow(flow->ibv_flow));
1127         if (flow->qp)
1128                 claim_zero(ibv_destroy_qp(flow->qp));
1129         if (flow->ind_table)
1130                 claim_zero(ibv_exp_destroy_rwq_ind_table(flow->ind_table));
1131         if (!flow->rxq && flow->wq)
1132                 claim_zero(ibv_exp_destroy_wq(flow->wq));
1133         if (!flow->rxq && flow->cq)
1134                 claim_zero(ibv_destroy_cq(flow->cq));
1135         if (flow->mark) {
1136                 struct rte_flow *tmp;
1137                 uint32_t mark_n = 0;
1138
1139                 for (tmp = LIST_FIRST(&priv->flows);
1140                      tmp;
1141                      tmp = LIST_NEXT(tmp, next)) {
1142                         if ((flow->rxq == tmp->rxq) && tmp->mark)
1143                                 ++mark_n;
1144                 }
1145                 flow->rxq->mark = !!mark_n;
1146         }
1147         rte_free(flow->ibv_attr);
1148         DEBUG("Flow destroyed %p", (void *)flow);
1149         rte_free(flow);
1150 }
1151
1152 /**
1153  * Destroy a flow.
1154  *
1155  * @see rte_flow_destroy()
1156  * @see rte_flow_ops
1157  */
1158 int
1159 mlx5_flow_destroy(struct rte_eth_dev *dev,
1160                   struct rte_flow *flow,
1161                   struct rte_flow_error *error)
1162 {
1163         struct priv *priv = dev->data->dev_private;
1164
1165         (void)error;
1166         priv_lock(priv);
1167         priv_flow_destroy(priv, flow);
1168         priv_unlock(priv);
1169         return 0;
1170 }
1171
1172 /**
1173  * Destroy all flows.
1174  *
1175  * @param priv
1176  *   Pointer to private structure.
1177  */
1178 static void
1179 priv_flow_flush(struct priv *priv)
1180 {
1181         while (!LIST_EMPTY(&priv->flows)) {
1182                 struct rte_flow *flow;
1183
1184                 flow = LIST_FIRST(&priv->flows);
1185                 priv_flow_destroy(priv, flow);
1186         }
1187 }
1188
1189 /**
1190  * Destroy all flows.
1191  *
1192  * @see rte_flow_flush()
1193  * @see rte_flow_ops
1194  */
1195 int
1196 mlx5_flow_flush(struct rte_eth_dev *dev,
1197                 struct rte_flow_error *error)
1198 {
1199         struct priv *priv = dev->data->dev_private;
1200
1201         (void)error;
1202         priv_lock(priv);
1203         priv_flow_flush(priv);
1204         priv_unlock(priv);
1205         return 0;
1206 }
1207
1208 /**
1209  * Remove all flows.
1210  *
1211  * Called by dev_stop() to remove all flows.
1212  *
1213  * @param priv
1214  *   Pointer to private structure.
1215  */
1216 void
1217 priv_flow_stop(struct priv *priv)
1218 {
1219         struct rte_flow *flow;
1220
1221         for (flow = LIST_FIRST(&priv->flows);
1222              flow;
1223              flow = LIST_NEXT(flow, next)) {
1224                 claim_zero(ibv_exp_destroy_flow(flow->ibv_flow));
1225                 flow->ibv_flow = NULL;
1226                 if (flow->mark)
1227                         flow->rxq->mark = 0;
1228                 DEBUG("Flow %p removed", (void *)flow);
1229         }
1230 }
1231
1232 /**
1233  * Add all flows.
1234  *
1235  * @param priv
1236  *   Pointer to private structure.
1237  *
1238  * @return
1239  *   0 on success, a errno value otherwise and rte_errno is set.
1240  */
1241 int
1242 priv_flow_start(struct priv *priv)
1243 {
1244         struct rte_flow *flow;
1245
1246         for (flow = LIST_FIRST(&priv->flows);
1247              flow;
1248              flow = LIST_NEXT(flow, next)) {
1249                 flow->ibv_flow = ibv_exp_create_flow(flow->qp,
1250                                                      flow->ibv_attr);
1251                 if (!flow->ibv_flow) {
1252                         DEBUG("Flow %p cannot be applied", (void *)flow);
1253                         rte_errno = EINVAL;
1254                         return rte_errno;
1255                 }
1256                 DEBUG("Flow %p applied", (void *)flow);
1257                 if (flow->rxq)
1258                         flow->rxq->mark |= flow->mark;
1259         }
1260         return 0;
1261 }