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                 },
 167                 .default_mask = &rte_flow_item_eth_mask,
 168                 .mask_sz = sizeof(struct rte_flow_item_eth),
 169                 .convert = mlx5_flow_create_eth,
 170                 .dst_sz = sizeof(struct ibv_exp_flow_spec_eth),
 171         },
 172         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 173                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4,
 174                                RTE_FLOW_ITEM_TYPE_IPV6),
 175                 .actions = valid_actions,
 176                 .mask = &(const struct rte_flow_item_vlan){
 177                         .tci = -1,
 178                 },
 179                 .default_mask = &rte_flow_item_vlan_mask,
 180                 .mask_sz = sizeof(struct rte_flow_item_vlan),
 181                 .convert = mlx5_flow_create_vlan,
 182                 .dst_sz = 0,
 183         },
 184         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 185                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 186                                RTE_FLOW_ITEM_TYPE_TCP),
 187                 .actions = valid_actions,
 188                 .mask = &(const struct rte_flow_item_ipv4){
 189                         .hdr = {
 190                                 .src_addr = -1,
 191                                 .dst_addr = -1,
 192                                 .type_of_service = -1,
 193                                 .next_proto_id = -1,
 194                         },
 195                 },
 196                 .default_mask = &rte_flow_item_ipv4_mask,
 197                 .mask_sz = sizeof(struct rte_flow_item_ipv4),
 198                 .convert = mlx5_flow_create_ipv4,
 199                 .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv4_ext),
 200         },
 201         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 202                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 203                                RTE_FLOW_ITEM_TYPE_TCP),
 204                 .actions = valid_actions,
 205                 .mask = &(const struct rte_flow_item_ipv6){
 206                         .hdr = {
 207                                 .src_addr = {
 208                                         0xff, 0xff, 0xff, 0xff,
 209                                         0xff, 0xff, 0xff, 0xff,
 210                                         0xff, 0xff, 0xff, 0xff,
 211                                         0xff, 0xff, 0xff, 0xff,
 212                                 },
 213                                 .dst_addr = {
 214                                         0xff, 0xff, 0xff, 0xff,
 215                                         0xff, 0xff, 0xff, 0xff,
 216                                         0xff, 0xff, 0xff, 0xff,
 217                                         0xff, 0xff, 0xff, 0xff,
 218                                 },
 219                         },
 220                 },
 221                 .default_mask = &rte_flow_item_ipv6_mask,
 222                 .mask_sz = sizeof(struct rte_flow_item_ipv6),
 223                 .convert = mlx5_flow_create_ipv6,
 224                 .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv6),
 225         },
 226         [RTE_FLOW_ITEM_TYPE_UDP] = {
 227                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN),
 228                 .actions = valid_actions,
 229                 .mask = &(const struct rte_flow_item_udp){
 230                         .hdr = {
 231                                 .src_port = -1,
 232                                 .dst_port = -1,
 233                         },
 234                 },
 235                 .default_mask = &rte_flow_item_udp_mask,
 236                 .mask_sz = sizeof(struct rte_flow_item_udp),
 237                 .convert = mlx5_flow_create_udp,
 238                 .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp),
 239         },
 240         [RTE_FLOW_ITEM_TYPE_TCP] = {
 241                 .actions = valid_actions,
 242                 .mask = &(const struct rte_flow_item_tcp){
 243                         .hdr = {
 244                                 .src_port = -1,
 245                                 .dst_port = -1,
 246                         },
 247                 },
 248                 .default_mask = &rte_flow_item_tcp_mask,
 249                 .mask_sz = sizeof(struct rte_flow_item_tcp),
 250                 .convert = mlx5_flow_create_tcp,
 251                 .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp),
 252         },
 253         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 254                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH),
 255                 .actions = valid_actions,
 256                 .mask = &(const struct rte_flow_item_vxlan){
 257                         .vni = "\xff\xff\xff",
 258                 },
 259                 .default_mask = &rte_flow_item_vxlan_mask,
 260                 .mask_sz = sizeof(struct rte_flow_item_vxlan),
 261                 .convert = mlx5_flow_create_vxlan,
 262                 .dst_sz = sizeof(struct ibv_exp_flow_spec_tunnel),
 263         },
 264 };
 265
 266 /** Structure to pass to the conversion function. */
 267 struct mlx5_flow {
 268         struct ibv_exp_flow_attr *ibv_attr; /**< Verbs attribute. */
 269         unsigned int offset; /**< Offset in bytes in the ibv_attr buffer. */
 270         uint32_t inner; /**< Set once VXLAN is encountered. */
 271 };
 272
 273 struct mlx5_flow_action {
 274         uint32_t queue:1; /**< Target is a receive queue. */
 275         uint32_t drop:1; /**< Target is a drop queue. */
 276         uint32_t mark:1; /**< Mark is present in the flow. */
 277         uint32_t queue_id; /**< Identifier of the queue. */
 278         uint32_t mark_id; /**< Mark identifier. */
 279 };
 280
 281 /**
 282  * Check support for a given item.
 283  *
 284  * @param item[in]
 285  *   Item specification.
 286  * @param mask[in]
 287  *   Bit-masks covering supported fields to compare with spec, last and mask in
 288  *   \item.
 289  * @param size
 290  *   Bit-Mask size in bytes.
 291  *
 292  * @return
 293  *   0 on success.
 294  */
 295 static int
 296 mlx5_flow_item_validate(const struct rte_flow_item *item,
 297                         const uint8_t *mask, unsigned int size)
 298 {
 299         int ret = 0;
 300
 301         if (!item->spec && (item->mask || item->last))
 302                 return -1;
 303         if (item->spec && !item->mask) {
 304                 unsigned int i;
 305                 const uint8_t *spec = item->spec;
 306
 307                 for (i = 0; i < size; ++i)
 308                         if ((spec[i] | mask[i]) != mask[i])
 309                                 return -1;
 310         }
 311         if (item->last && !item->mask) {
 312                 unsigned int i;
 313                 const uint8_t *spec = item->last;
 314
 315                 for (i = 0; i < size; ++i)
 316                         if ((spec[i] | mask[i]) != mask[i])
 317                                 return -1;
 318         }
 319         if (item->mask) {
 320                 unsigned int i;
 321                 const uint8_t *spec = item->mask;
 322
 323                 for (i = 0; i < size; ++i)
 324                         if ((spec[i] | mask[i]) != mask[i])
 325                                 return -1;
 326         }
 327         if (item->spec && item->last) {
 328                 uint8_t spec[size];
 329                 uint8_t last[size];
 330                 const uint8_t *apply = mask;
 331                 unsigned int i;
 332
 333                 if (item->mask)
 334                         apply = item->mask;
 335                 for (i = 0; i < size; ++i) {
 336                         spec[i] = ((const uint8_t *)item->spec)[i] & apply[i];
 337                         last[i] = ((const uint8_t *)item->last)[i] & apply[i];
 338                 }
 339                 ret = memcmp(spec, last, size);
 340         }
 341         return ret;
 342 }
 343
 344 /**
 345  * Validate a flow supported by the NIC.
 346  *
 347  * @param priv
 348  *   Pointer to private structure.
 349  * @param[in] attr
 350  *   Flow rule attributes.
 351  * @param[in] pattern
 352  *   Pattern specification (list terminated by the END pattern item).
 353  * @param[in] actions
 354  *   Associated actions (list terminated by the END action).
 355  * @param[out] error
 356  *   Perform verbose error reporting if not NULL.
 357  * @param[in, out] flow
 358  *   Flow structure to update.
 359  *
 360  * @return
 361  *   0 on success, a negative errno value otherwise and rte_errno is set.
 362  */
 363 static int
 364 priv_flow_validate(struct priv *priv,
 365                    const struct rte_flow_attr *attr,
 366                    const struct rte_flow_item items[],
 367                    const struct rte_flow_action actions[],
 368                    struct rte_flow_error *error,
 369                    struct mlx5_flow *flow)
 370 {
 371         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
 372         struct mlx5_flow_action action = {
 373                 .queue = 0,
 374                 .drop = 0,
 375                 .mark = 0,
 376         };
 377
 378         (void)priv;
 379         if (attr->group) {
 380                 rte_flow_error_set(error, ENOTSUP,
 381                                    RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
 382                                    NULL,
 383                                    "groups are not supported");
 384                 return -rte_errno;
 385         }
 386         if (attr->priority) {
 387                 rte_flow_error_set(error, ENOTSUP,
 388                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 389                                    NULL,
 390                                    "priorities are not supported");
 391                 return -rte_errno;
 392         }
 393         if (attr->egress) {
 394                 rte_flow_error_set(error, ENOTSUP,
 395                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
 396                                    NULL,
 397                                    "egress is not supported");
 398                 return -rte_errno;
 399         }
 400         if (!attr->ingress) {
 401                 rte_flow_error_set(error, ENOTSUP,
 402                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 403                                    NULL,
 404                                    "only ingress is supported");
 405                 return -rte_errno;
 406         }
 407         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
 408                 const struct mlx5_flow_items *token = NULL;
 409                 unsigned int i;
 410                 int err;
 411
 412                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
 413                         continue;
 414                 for (i = 0;
 415                      cur_item->items &&
 416                      cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END;
 417                      ++i) {
 418                         if (cur_item->items[i] == items->type) {
 419                                 token = &mlx5_flow_items[items->type];
 420                                 break;
 421                         }
 422                 }
 423                 if (!token)
 424                         goto exit_item_not_supported;
 425                 cur_item = token;
 426                 err = mlx5_flow_item_validate(items,
 427                                               (const uint8_t *)cur_item->mask,
 428                                               cur_item->mask_sz);
 429                 if (err)
 430                         goto exit_item_not_supported;
 431                 if (flow->ibv_attr && cur_item->convert) {
 432                         err = cur_item->convert(items,
 433                                                 (cur_item->default_mask ?
 434                                                  cur_item->default_mask :
 435                                                  cur_item->mask),
 436                                                 flow);
 437                         if (err)
 438                                 goto exit_item_not_supported;
 439                 }
 440                 flow->offset += cur_item->dst_sz;
 441         }
 442         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
 443                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
 444                         continue;
 445                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
 446                         action.drop = 1;
 447                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
 448                         const struct rte_flow_action_queue *queue =
 449                                 (const struct rte_flow_action_queue *)
 450                                 actions->conf;
 451
 452                         if (!queue || (queue->index > (priv->rxqs_n - 1)))
 453                                 goto exit_action_not_supported;
 454                         action.queue = 1;
 455                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
 456                         const struct rte_flow_action_mark *mark =
 457                                 (const struct rte_flow_action_mark *)
 458                                 actions->conf;
 459
 460                         if (mark && (mark->id >= MLX5_FLOW_MARK_MAX)) {
 461                                 rte_flow_error_set(error, ENOTSUP,
 462                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 463                                                    actions,
 464                                                    "mark must be between 0"
 465                                                    " and 16777199");
 466                                 return -rte_errno;
 467                         }
 468                         action.mark = 1;
 469                 } else {
 470                         goto exit_action_not_supported;
 471                 }
 472         }
 473         if (action.mark && !flow->ibv_attr && !action.drop)
 474                 flow->offset += sizeof(struct ibv_exp_flow_spec_action_tag);
 475         if (!action.queue && !action.drop) {
 476                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
 477                                    NULL, "no valid action");
 478                 return -rte_errno;
 479         }
 480         return 0;
 481 exit_item_not_supported:
 482         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 483                            items, "item not supported");
 484         return -rte_errno;
 485 exit_action_not_supported:
 486         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
 487                            actions, "action not supported");
 488         return -rte_errno;
 489 }
 490
 491 /**
 492  * Validate a flow supported by the NIC.
 493  *
 494  * @see rte_flow_validate()
 495  * @see rte_flow_ops
 496  */
 497 int
 498 mlx5_flow_validate(struct rte_eth_dev *dev,
 499                    const struct rte_flow_attr *attr,
 500                    const struct rte_flow_item items[],
 501                    const struct rte_flow_action actions[],
 502                    struct rte_flow_error *error)
 503 {
 504         struct priv *priv = dev->data->dev_private;
 505         int ret;
 506         struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr) };
 507
 508         priv_lock(priv);
 509         ret = priv_flow_validate(priv, attr, items, actions, error, &flow);
 510         priv_unlock(priv);
 511         return ret;
 512 }
 513
 514 /**
 515  * Convert Ethernet item to Verbs specification.
 516  *
 517  * @param item[in]
 518  *   Item specification.
 519  * @param default_mask[in]
 520  *   Default bit-masks to use when item->mask is not provided.
 521  * @param data[in, out]
 522  *   User structure.
 523  */
 524 static int
 525 mlx5_flow_create_eth(const struct rte_flow_item *item,
 526                      const void *default_mask,
 527                      void *data)
 528 {
 529         const struct rte_flow_item_eth *spec = item->spec;
 530         const struct rte_flow_item_eth *mask = item->mask;
 531         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 532         struct ibv_exp_flow_spec_eth *eth;
 533         const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth);
 534         unsigned int i;
 535
 536         ++flow->ibv_attr->num_of_specs;
 537         flow->ibv_attr->priority = 2;
 538         eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 539         *eth = (struct ibv_exp_flow_spec_eth) {
 540                 .type = flow->inner | IBV_EXP_FLOW_SPEC_ETH,
 541                 .size = eth_size,
 542         };
 543         if (!spec)
 544                 return 0;
 545         if (!mask)
 546                 mask = default_mask;
 547         memcpy(eth->val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN);
 548         memcpy(eth->val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN);
 549         memcpy(eth->mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN);
 550         memcpy(eth->mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN);
 551         /* Remove unwanted bits from values. */
 552         for (i = 0; i < ETHER_ADDR_LEN; ++i) {
 553                 eth->val.dst_mac[i] &= eth->mask.dst_mac[i];
 554                 eth->val.src_mac[i] &= eth->mask.src_mac[i];
 555         }
 556         return 0;
 557 }
 558
 559 /**
 560  * Convert VLAN item to Verbs specification.
 561  *
 562  * @param item[in]
 563  *   Item specification.
 564  * @param default_mask[in]
 565  *   Default bit-masks to use when item->mask is not provided.
 566  * @param data[in, out]
 567  *   User structure.
 568  */
 569 static int
 570 mlx5_flow_create_vlan(const struct rte_flow_item *item,
 571                       const void *default_mask,
 572                       void *data)
 573 {
 574         const struct rte_flow_item_vlan *spec = item->spec;
 575         const struct rte_flow_item_vlan *mask = item->mask;
 576         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 577         struct ibv_exp_flow_spec_eth *eth;
 578         const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth);
 579
 580         eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset - eth_size);
 581         if (!spec)
 582                 return 0;
 583         if (!mask)
 584                 mask = default_mask;
 585         eth->val.vlan_tag = spec->tci;
 586         eth->mask.vlan_tag = mask->tci;
 587         eth->val.vlan_tag &= eth->mask.vlan_tag;
 588         return 0;
 589 }
 590
 591 /**
 592  * Convert IPv4 item to Verbs specification.
 593  *
 594  * @param item[in]
 595  *   Item specification.
 596  * @param default_mask[in]
 597  *   Default bit-masks to use when item->mask is not provided.
 598  * @param data[in, out]
 599  *   User structure.
 600  */
 601 static int
 602 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
 603                       const void *default_mask,
 604                       void *data)
 605 {
 606         const struct rte_flow_item_ipv4 *spec = item->spec;
 607         const struct rte_flow_item_ipv4 *mask = item->mask;
 608         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 609         struct ibv_exp_flow_spec_ipv4_ext *ipv4;
 610         unsigned int ipv4_size = sizeof(struct ibv_exp_flow_spec_ipv4_ext);
 611
 612         ++flow->ibv_attr->num_of_specs;
 613         flow->ibv_attr->priority = 1;
 614         ipv4 = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 615         *ipv4 = (struct ibv_exp_flow_spec_ipv4_ext) {
 616                 .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV4_EXT,
 617                 .size = ipv4_size,
 618         };
 619         if (!spec)
 620                 return 0;
 621         if (!mask)
 622                 mask = default_mask;
 623         ipv4->val = (struct ibv_exp_flow_ipv4_ext_filter){
 624                 .src_ip = spec->hdr.src_addr,
 625                 .dst_ip = spec->hdr.dst_addr,
 626                 .proto = spec->hdr.next_proto_id,
 627                 .tos = spec->hdr.type_of_service,
 628         };
 629         ipv4->mask = (struct ibv_exp_flow_ipv4_ext_filter){
 630                 .src_ip = mask->hdr.src_addr,
 631                 .dst_ip = mask->hdr.dst_addr,
 632                 .proto = mask->hdr.next_proto_id,
 633                 .tos = mask->hdr.type_of_service,
 634         };
 635         /* Remove unwanted bits from values. */
 636         ipv4->val.src_ip &= ipv4->mask.src_ip;
 637         ipv4->val.dst_ip &= ipv4->mask.dst_ip;
 638         ipv4->val.proto &= ipv4->mask.proto;
 639         ipv4->val.tos &= ipv4->mask.tos;
 640         return 0;
 641 }
 642
 643 /**
 644  * Convert IPv6 item to Verbs specification.
 645  *
 646  * @param item[in]
 647  *   Item specification.
 648  * @param default_mask[in]
 649  *   Default bit-masks to use when item->mask is not provided.
 650  * @param data[in, out]
 651  *   User structure.
 652  */
 653 static int
 654 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
 655                       const void *default_mask,
 656                       void *data)
 657 {
 658         const struct rte_flow_item_ipv6 *spec = item->spec;
 659         const struct rte_flow_item_ipv6 *mask = item->mask;
 660         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 661         struct ibv_exp_flow_spec_ipv6 *ipv6;
 662         unsigned int ipv6_size = sizeof(struct ibv_exp_flow_spec_ipv6);
 663         unsigned int i;
 664
 665         ++flow->ibv_attr->num_of_specs;
 666         flow->ibv_attr->priority = 1;
 667         ipv6 = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 668         *ipv6 = (struct ibv_exp_flow_spec_ipv6) {
 669                 .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV6,
 670                 .size = ipv6_size,
 671         };
 672         if (!spec)
 673                 return 0;
 674         if (!mask)
 675                 mask = default_mask;
 676         memcpy(ipv6->val.src_ip, spec->hdr.src_addr,
 677                RTE_DIM(ipv6->val.src_ip));
 678         memcpy(ipv6->val.dst_ip, spec->hdr.dst_addr,
 679                RTE_DIM(ipv6->val.dst_ip));
 680         memcpy(ipv6->mask.src_ip, mask->hdr.src_addr,
 681                RTE_DIM(ipv6->mask.src_ip));
 682         memcpy(ipv6->mask.dst_ip, mask->hdr.dst_addr,
 683                RTE_DIM(ipv6->mask.dst_ip));
 684         /* Remove unwanted bits from values. */
 685         for (i = 0; i < RTE_DIM(ipv6->val.src_ip); ++i) {
 686                 ipv6->val.src_ip[i] &= ipv6->mask.src_ip[i];
 687                 ipv6->val.dst_ip[i] &= ipv6->mask.dst_ip[i];
 688         }
 689         return 0;
 690 }
 691
 692 /**
 693  * Convert UDP item to Verbs specification.
 694  *
 695  * @param item[in]
 696  *   Item specification.
 697  * @param default_mask[in]
 698  *   Default bit-masks to use when item->mask is not provided.
 699  * @param data[in, out]
 700  *   User structure.
 701  */
 702 static int
 703 mlx5_flow_create_udp(const struct rte_flow_item *item,
 704                      const void *default_mask,
 705                      void *data)
 706 {
 707         const struct rte_flow_item_udp *spec = item->spec;
 708         const struct rte_flow_item_udp *mask = item->mask;
 709         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 710         struct ibv_exp_flow_spec_tcp_udp *udp;
 711         unsigned int udp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp);
 712
 713         ++flow->ibv_attr->num_of_specs;
 714         flow->ibv_attr->priority = 0;
 715         udp = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 716         *udp = (struct ibv_exp_flow_spec_tcp_udp) {
 717                 .type = flow->inner | IBV_EXP_FLOW_SPEC_UDP,
 718                 .size = udp_size,
 719         };
 720         if (!spec)
 721                 return 0;
 722         if (!mask)
 723                 mask = default_mask;
 724         udp->val.dst_port = spec->hdr.dst_port;
 725         udp->val.src_port = spec->hdr.src_port;
 726         udp->mask.dst_port = mask->hdr.dst_port;
 727         udp->mask.src_port = mask->hdr.src_port;
 728         /* Remove unwanted bits from values. */
 729         udp->val.src_port &= udp->mask.src_port;
 730         udp->val.dst_port &= udp->mask.dst_port;
 731         return 0;
 732 }
 733
 734 /**
 735  * Convert TCP item to Verbs specification.
 736  *
 737  * @param item[in]
 738  *   Item specification.
 739  * @param default_mask[in]
 740  *   Default bit-masks to use when item->mask is not provided.
 741  * @param data[in, out]
 742  *   User structure.
 743  */
 744 static int
 745 mlx5_flow_create_tcp(const struct rte_flow_item *item,
 746                      const void *default_mask,
 747                      void *data)
 748 {
 749         const struct rte_flow_item_tcp *spec = item->spec;
 750         const struct rte_flow_item_tcp *mask = item->mask;
 751         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 752         struct ibv_exp_flow_spec_tcp_udp *tcp;
 753         unsigned int tcp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp);
 754
 755         ++flow->ibv_attr->num_of_specs;
 756         flow->ibv_attr->priority = 0;
 757         tcp = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 758         *tcp = (struct ibv_exp_flow_spec_tcp_udp) {
 759                 .type = flow->inner | IBV_EXP_FLOW_SPEC_TCP,
 760                 .size = tcp_size,
 761         };
 762         if (!spec)
 763                 return 0;
 764         if (!mask)
 765                 mask = default_mask;
 766         tcp->val.dst_port = spec->hdr.dst_port;
 767         tcp->val.src_port = spec->hdr.src_port;
 768         tcp->mask.dst_port = mask->hdr.dst_port;
 769         tcp->mask.src_port = mask->hdr.src_port;
 770         /* Remove unwanted bits from values. */
 771         tcp->val.src_port &= tcp->mask.src_port;
 772         tcp->val.dst_port &= tcp->mask.dst_port;
 773         return 0;
 774 }
 775
 776 /**
 777  * Convert VXLAN item to Verbs specification.
 778  *
 779  * @param item[in]
 780  *   Item specification.
 781  * @param default_mask[in]
 782  *   Default bit-masks to use when item->mask is not provided.
 783  * @param data[in, out]
 784  *   User structure.
 785  */
 786 static int
 787 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
 788                        const void *default_mask,
 789                        void *data)
 790 {
 791         const struct rte_flow_item_vxlan *spec = item->spec;
 792         const struct rte_flow_item_vxlan *mask = item->mask;
 793         struct mlx5_flow *flow = (struct mlx5_flow *)data;
 794         struct ibv_exp_flow_spec_tunnel *vxlan;
 795         unsigned int size = sizeof(struct ibv_exp_flow_spec_tunnel);
 796         union vni {
 797                 uint32_t vlan_id;
 798                 uint8_t vni[4];
 799         } id;
 800
 801         ++flow->ibv_attr->num_of_specs;
 802         flow->ibv_attr->priority = 0;
 803         id.vni[0] = 0;
 804         vxlan = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 805         *vxlan = (struct ibv_exp_flow_spec_tunnel) {
 806                 .type = flow->inner | IBV_EXP_FLOW_SPEC_VXLAN_TUNNEL,
 807                 .size = size,
 808         };
 809         flow->inner = IBV_EXP_FLOW_SPEC_INNER;
 810         if (!spec)
 811                 return 0;
 812         if (!mask)
 813                 mask = default_mask;
 814         memcpy(&id.vni[1], spec->vni, 3);
 815         vxlan->val.tunnel_id = id.vlan_id;
 816         memcpy(&id.vni[1], mask->vni, 3);
 817         vxlan->mask.tunnel_id = id.vlan_id;
 818         /* Remove unwanted bits from values. */
 819         vxlan->val.tunnel_id &= vxlan->mask.tunnel_id;
 820         return 0;
 821 }
 822
 823 /**
 824  * Convert mark/flag action to Verbs specification.
 825  *
 826  * @param flow
 827  *   Pointer to MLX5 flow structure.
 828  * @param mark_id
 829  *   Mark identifier.
 830  */
 831 static int
 832 mlx5_flow_create_flag_mark(struct mlx5_flow *flow, uint32_t mark_id)
 833 {
 834         struct ibv_exp_flow_spec_action_tag *tag;
 835         unsigned int size = sizeof(struct ibv_exp_flow_spec_action_tag);
 836
 837         tag = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
 838         *tag = (struct ibv_exp_flow_spec_action_tag){
 839                 .type = IBV_EXP_FLOW_SPEC_ACTION_TAG,
 840                 .size = size,
 841                 .tag_id = mlx5_flow_mark_set(mark_id),
 842         };
 843         ++flow->ibv_attr->num_of_specs;
 844         return 0;
 845 }
 846
 847 /**
 848  * Complete flow rule creation.
 849  *
 850  * @param priv
 851  *   Pointer to private structure.
 852  * @param ibv_attr
 853  *   Verbs flow attributes.
 854  * @param action
 855  *   Target action structure.
 856  * @param[out] error
 857  *   Perform verbose error reporting if not NULL.
 858  *
 859  * @return
 860  *   A flow if the rule could be created.
 861  */
 862 static struct rte_flow *
 863 priv_flow_create_action_queue(struct priv *priv,
 864                               struct ibv_exp_flow_attr *ibv_attr,
 865                               struct mlx5_flow_action *action,
 866                               struct rte_flow_error *error)
 867 {
 868         struct rxq_ctrl *rxq;
 869         struct rte_flow *rte_flow;
 870
 871         assert(priv->pd);
 872         assert(priv->ctx);
 873         rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow), 0);
 874         if (!rte_flow) {
 875                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
 876                                    NULL, "cannot allocate flow memory");
 877                 return NULL;
 878         }
 879         if (action->drop) {
 880                 rte_flow->cq =
 881                         ibv_exp_create_cq(priv->ctx, 1, NULL, NULL, 0,
 882                                           &(struct ibv_exp_cq_init_attr){
 883                                                   .comp_mask = 0,
 884                                           });
 885                 if (!rte_flow->cq) {
 886                         rte_flow_error_set(error, ENOMEM,
 887                                            RTE_FLOW_ERROR_TYPE_HANDLE,
 888                                            NULL, "cannot allocate CQ");
 889                         goto error;
 890                 }
 891                 rte_flow->wq = ibv_exp_create_wq(priv->ctx,
 892                                                  &(struct ibv_exp_wq_init_attr){
 893                                                  .wq_type = IBV_EXP_WQT_RQ,
 894                                                  .max_recv_wr = 1,
 895                                                  .max_recv_sge = 1,
 896                                                  .pd = priv->pd,
 897                                                  .cq = rte_flow->cq,
 898                                                  });
 899         } else {
 900                 rxq = container_of((*priv->rxqs)[action->queue_id],
 901                                    struct rxq_ctrl, rxq);
 902                 rte_flow->rxq = &rxq->rxq;
 903                 rxq->rxq.mark |= action->mark;
 904                 rte_flow->wq = rxq->wq;
 905         }
 906         rte_flow->mark = action->mark;
 907         rte_flow->ibv_attr = ibv_attr;
 908         rte_flow->ind_table = ibv_exp_create_rwq_ind_table(
 909                 priv->ctx,
 910                 &(struct ibv_exp_rwq_ind_table_init_attr){
 911                         .pd = priv->pd,
 912                         .log_ind_tbl_size = 0,
 913                         .ind_tbl = &rte_flow->wq,
 914                         .comp_mask = 0,
 915                 });
 916         if (!rte_flow->ind_table) {
 917                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
 918                                    NULL, "cannot allocate indirection table");
 919                 goto error;
 920         }
 921         rte_flow->qp = ibv_exp_create_qp(
 922                 priv->ctx,
 923                 &(struct ibv_exp_qp_init_attr){
 924                         .qp_type = IBV_QPT_RAW_PACKET,
 925                         .comp_mask =
 926                                 IBV_EXP_QP_INIT_ATTR_PD |
 927                                 IBV_EXP_QP_INIT_ATTR_PORT |
 928                                 IBV_EXP_QP_INIT_ATTR_RX_HASH,
 929                         .pd = priv->pd,
 930                         .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){
 931                                 .rx_hash_function =
 932                                         IBV_EXP_RX_HASH_FUNC_TOEPLITZ,
 933                                 .rx_hash_key_len = rss_hash_default_key_len,
 934                                 .rx_hash_key = rss_hash_default_key,
 935                                 .rx_hash_fields_mask = 0,
 936                                 .rwq_ind_tbl = rte_flow->ind_table,
 937                         },
 938                         .port_num = priv->port,
 939                 });
 940         if (!rte_flow->qp) {
 941                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
 942                                    NULL, "cannot allocate QP");
 943                 goto error;
 944         }
 945         rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp,
 946                                                  rte_flow->ibv_attr);
 947         if (!rte_flow->ibv_flow) {
 948                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
 949                                    NULL, "flow rule creation failure");
 950                 goto error;
 951         }
 952         return rte_flow;
 953 error:
 954         assert(rte_flow);
 955         if (rte_flow->qp)
 956                 ibv_destroy_qp(rte_flow->qp);
 957         if (rte_flow->ind_table)
 958                 ibv_exp_destroy_rwq_ind_table(rte_flow->ind_table);
 959         if (!rte_flow->rxq && rte_flow->wq)
 960                 ibv_exp_destroy_wq(rte_flow->wq);
 961         if (!rte_flow->rxq && rte_flow->cq)
 962                 ibv_destroy_cq(rte_flow->cq);
 963         rte_free(rte_flow->ibv_attr);
 964         rte_free(rte_flow);
 965         return NULL;
 966 }
 967
 968 /**
 969  * Convert a flow.
 970  *
 971  * @param priv
 972  *   Pointer to private structure.
 973  * @param[in] attr
 974  *   Flow rule attributes.
 975  * @param[in] pattern
 976  *   Pattern specification (list terminated by the END pattern item).
 977  * @param[in] actions
 978  *   Associated actions (list terminated by the END action).
 979  * @param[out] error
 980  *   Perform verbose error reporting if not NULL.
 981  *
 982  * @return
 983  *   A flow on success, NULL otherwise.
 984  */
 985 static struct rte_flow *
 986 priv_flow_create(struct priv *priv,
 987                  const struct rte_flow_attr *attr,
 988                  const struct rte_flow_item items[],
 989                  const struct rte_flow_action actions[],
 990                  struct rte_flow_error *error)
 991 {
 992         struct rte_flow *rte_flow;
 993         struct mlx5_flow_action action;
 994         struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr), };
 995         int err;
 996
 997         err = priv_flow_validate(priv, attr, items, actions, error, &flow);
 998         if (err)
 999                 goto exit;
1000         flow.ibv_attr = rte_malloc(__func__, flow.offset, 0);
1001         flow.offset = sizeof(struct ibv_exp_flow_attr);
1002         if (!flow.ibv_attr) {
1003                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1004                                    NULL, "cannot allocate ibv_attr memory");
1005                 goto exit;
1006         }
1007         *flow.ibv_attr = (struct ibv_exp_flow_attr){
1008                 .type = IBV_EXP_FLOW_ATTR_NORMAL,
1009                 .size = sizeof(struct ibv_exp_flow_attr),
1010                 .priority = attr->priority,
1011                 .num_of_specs = 0,
1012                 .port = 0,
1013                 .flags = 0,
1014                 .reserved = 0,
1015         };
1016         flow.inner = 0;
1017         claim_zero(priv_flow_validate(priv, attr, items, actions,
1018                                       error, &flow));
1019         action = (struct mlx5_flow_action){
1020                 .queue = 0,
1021                 .drop = 0,
1022                 .mark = 0,
1023                 .mark_id = MLX5_FLOW_MARK_DEFAULT,
1024         };
1025         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
1026                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
1027                         continue;
1028                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
1029                         action.queue = 1;
1030                         action.queue_id =
1031                                 ((const struct rte_flow_action_queue *)
1032                                  actions->conf)->index;
1033                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
1034                         action.drop = 1;
1035                         action.mark = 0;
1036                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
1037                         const struct rte_flow_action_mark *mark =
1038                                 (const struct rte_flow_action_mark *)
1039                                 actions->conf;
1040
1041                         if (mark)
1042                                 action.mark_id = mark->id;
1043                         action.mark = !action.drop;
1044                 } else {
1045                         rte_flow_error_set(error, ENOTSUP,
1046                                            RTE_FLOW_ERROR_TYPE_ACTION,
1047                                            actions, "unsupported action");
1048                         goto exit;
1049                 }
1050         }
1051         if (action.mark) {
1052                 mlx5_flow_create_flag_mark(&flow, action.mark_id);
1053                 flow.offset += sizeof(struct ibv_exp_flow_spec_action_tag);
1054         }
1055         rte_flow = priv_flow_create_action_queue(priv, flow.ibv_attr,
1056                                                  &action, error);
1057         return rte_flow;
1058 exit:
1059         rte_free(flow.ibv_attr);
1060         return NULL;
1061 }
1062
1063 /**
1064  * Create a flow.
1065  *
1066  * @see rte_flow_create()
1067  * @see rte_flow_ops
1068  */
1069 struct rte_flow *
1070 mlx5_flow_create(struct rte_eth_dev *dev,
1071                  const struct rte_flow_attr *attr,
1072                  const struct rte_flow_item items[],
1073                  const struct rte_flow_action actions[],
1074                  struct rte_flow_error *error)
1075 {
1076         struct priv *priv = dev->data->dev_private;
1077         struct rte_flow *flow;
1078
1079         priv_lock(priv);
1080         flow = priv_flow_create(priv, attr, items, actions, error);
1081         if (flow) {
1082                 LIST_INSERT_HEAD(&priv->flows, flow, next);
1083                 DEBUG("Flow created %p", (void *)flow);
1084         }
1085         priv_unlock(priv);
1086         return flow;
1087 }
1088
1089 /**
1090  * Destroy a flow.
1091  *
1092  * @param priv
1093  *   Pointer to private structure.
1094  * @param[in] flow
1095  *   Flow to destroy.
1096  */
1097 static void
1098 priv_flow_destroy(struct priv *priv,
1099                   struct rte_flow *flow)
1100 {
1101         (void)priv;
1102         LIST_REMOVE(flow, next);
1103         if (flow->ibv_flow)
1104                 claim_zero(ibv_exp_destroy_flow(flow->ibv_flow));
1105         if (flow->qp)
1106                 claim_zero(ibv_destroy_qp(flow->qp));
1107         if (flow->ind_table)
1108                 claim_zero(ibv_exp_destroy_rwq_ind_table(flow->ind_table));
1109         if (!flow->rxq && flow->wq)
1110                 claim_zero(ibv_exp_destroy_wq(flow->wq));
1111         if (!flow->rxq && flow->cq)
1112                 claim_zero(ibv_destroy_cq(flow->cq));
1113         if (flow->mark) {
1114                 struct rte_flow *tmp;
1115                 uint32_t mark_n = 0;
1116
1117                 for (tmp = LIST_FIRST(&priv->flows);
1118                      tmp;
1119                      tmp = LIST_NEXT(tmp, next)) {
1120                         if ((flow->rxq == tmp->rxq) && tmp->mark)
1121                                 ++mark_n;
1122                 }
1123                 flow->rxq->mark = !!mark_n;
1124         }
1125         rte_free(flow->ibv_attr);
1126         DEBUG("Flow destroyed %p", (void *)flow);
1127         rte_free(flow);
1128 }
1129
1130 /**
1131  * Destroy a flow.
1132  *
1133  * @see rte_flow_destroy()
1134  * @see rte_flow_ops
1135  */
1136 int
1137 mlx5_flow_destroy(struct rte_eth_dev *dev,
1138                   struct rte_flow *flow,
1139                   struct rte_flow_error *error)
1140 {
1141         struct priv *priv = dev->data->dev_private;
1142
1143         (void)error;
1144         priv_lock(priv);
1145         priv_flow_destroy(priv, flow);
1146         priv_unlock(priv);
1147         return 0;
1148 }
1149
1150 /**
1151  * Destroy all flows.
1152  *
1153  * @param priv
1154  *   Pointer to private structure.
1155  */
1156 static void
1157 priv_flow_flush(struct priv *priv)
1158 {
1159         while (!LIST_EMPTY(&priv->flows)) {
1160                 struct rte_flow *flow;
1161
1162                 flow = LIST_FIRST(&priv->flows);
1163                 priv_flow_destroy(priv, flow);
1164         }
1165 }
1166
1167 /**
1168  * Destroy all flows.
1169  *
1170  * @see rte_flow_flush()
1171  * @see rte_flow_ops
1172  */
1173 int
1174 mlx5_flow_flush(struct rte_eth_dev *dev,
1175                 struct rte_flow_error *error)
1176 {
1177         struct priv *priv = dev->data->dev_private;
1178
1179         (void)error;
1180         priv_lock(priv);
1181         priv_flow_flush(priv);
1182         priv_unlock(priv);
1183         return 0;
1184 }
1185
1186 /**
1187  * Remove all flows.
1188  *
1189  * Called by dev_stop() to remove all flows.
1190  *
1191  * @param priv
1192  *   Pointer to private structure.
1193  */
1194 void
1195 priv_flow_stop(struct priv *priv)
1196 {
1197         struct rte_flow *flow;
1198
1199         for (flow = LIST_FIRST(&priv->flows);
1200              flow;
1201              flow = LIST_NEXT(flow, next)) {
1202                 claim_zero(ibv_exp_destroy_flow(flow->ibv_flow));
1203                 flow->ibv_flow = NULL;
1204                 if (flow->mark)
1205                         flow->rxq->mark = 0;
1206                 DEBUG("Flow %p removed", (void *)flow);
1207         }
1208 }
1209
1210 /**
1211  * Add all flows.
1212  *
1213  * @param priv
1214  *   Pointer to private structure.
1215  *
1216  * @return
1217  *   0 on success, a errno value otherwise and rte_errno is set.
1218  */
1219 int
1220 priv_flow_start(struct priv *priv)
1221 {
1222         struct rte_flow *flow;
1223
1224         for (flow = LIST_FIRST(&priv->flows);
1225              flow;
1226              flow = LIST_NEXT(flow, next)) {
1227                 flow->ibv_flow = ibv_exp_create_flow(flow->qp,
1228                                                      flow->ibv_attr);
1229                 if (!flow->ibv_flow) {
1230                         DEBUG("Flow %p cannot be applied", (void *)flow);
1231                         rte_errno = EINVAL;
1232                         return rte_errno;
1233                 }
1234                 DEBUG("Flow %p applied", (void *)flow);
1235                 if (flow->rxq)
1236                         flow->rxq->mark |= flow->mark;
1237         }
1238         return 0;
1239 }