drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <stdalign.h>
   7 #include <stdint.h>
   8 #include <string.h>
   9 #include <stdbool.h>
  10 #include <sys/queue.h>
  11
  12 #include <rte_common.h>
  13 #include <rte_ether.h>
  14 #include <ethdev_driver.h>
  15 #include <rte_eal_paging.h>
  16 #include <rte_flow.h>
  17 #include <rte_cycles.h>
  18 #include <rte_flow_driver.h>
  19 #include <rte_malloc.h>
  20 #include <rte_ip.h>
  21
  22 #include <mlx5_glue.h>
  23 #include <mlx5_devx_cmds.h>
  24 #include <mlx5_prm.h>
  25 #include <mlx5_malloc.h>
  26
  27 #include "mlx5_defs.h"
  28 #include "mlx5.h"
  29 #include "mlx5_flow.h"
  30 #include "mlx5_flow_os.h"
  31 #include "mlx5_rx.h"
  32 #include "mlx5_tx.h"
  33 #include "mlx5_common_os.h"
  34 #include "rte_pmd_mlx5.h"
  35
  36 struct tunnel_default_miss_ctx {
  37         uint16_t *queue;
  38         __extension__
  39         union {
  40                 struct rte_flow_action_rss action_rss;
  41                 struct rte_flow_action_queue miss_queue;
  42                 struct rte_flow_action_jump miss_jump;
  43                 uint8_t raw[0];
  44         };
  45 };
  46
  47 static int
  48 flow_tunnel_add_default_miss(struct rte_eth_dev *dev,
  49                              struct rte_flow *flow,
  50                              const struct rte_flow_attr *attr,
  51                              const struct rte_flow_action *app_actions,
  52                              uint32_t flow_idx,
  53                              const struct mlx5_flow_tunnel *tunnel,
  54                              struct tunnel_default_miss_ctx *ctx,
  55                              struct rte_flow_error *error);
  56 static struct mlx5_flow_tunnel *
  57 mlx5_find_tunnel_id(struct rte_eth_dev *dev, uint32_t id);
  58 static void
  59 mlx5_flow_tunnel_free(struct rte_eth_dev *dev, struct mlx5_flow_tunnel *tunnel);
  60 static uint32_t
  61 tunnel_flow_group_to_flow_table(struct rte_eth_dev *dev,
  62                                 const struct mlx5_flow_tunnel *tunnel,
  63                                 uint32_t group, uint32_t *table,
  64                                 struct rte_flow_error *error);
  65
  66 static struct mlx5_flow_workspace *mlx5_flow_push_thread_workspace(void);
  67 static void mlx5_flow_pop_thread_workspace(void);
  68
  69
  70 /** Device flow drivers. */
  71 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  72
  73 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  74
  75 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  76         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  77 #if defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_INFINIBAND_VERBS_H)
  78         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  79 #endif
  80         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  81         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  82 };
  83
  84 /** Helper macro to build input graph for mlx5_flow_expand_rss(). */
  85 #define MLX5_FLOW_EXPAND_RSS_NEXT(...) \
  86         (const int []){ \
  87                 __VA_ARGS__, 0, \
  88         }
  89
  90 /** Node object of input graph for mlx5_flow_expand_rss(). */
  91 struct mlx5_flow_expand_node {
  92         const int *const next;
  93         /**<
  94          * List of next node indexes. Index 0 is interpreted as a terminator.
  95          */
  96         const enum rte_flow_item_type type;
  97         /**< Pattern item type of current node. */
  98         uint64_t rss_types;
  99         /**<
 100          * RSS types bit-field associated with this node
 101          * (see ETH_RSS_* definitions).
 102          */
 103         uint8_t optional;
 104         /**< optional expand field. Default 0 to expand, 1 not go deeper. */
 105 };
 106
 107 /** Object returned by mlx5_flow_expand_rss(). */
 108 struct mlx5_flow_expand_rss {
 109         uint32_t entries;
 110         /**< Number of entries @p patterns and @p priorities. */
 111         struct {
 112                 struct rte_flow_item *pattern; /**< Expanded pattern array. */
 113                 uint32_t priority; /**< Priority offset for each expansion. */
 114         } entry[];
 115 };
 116
 117 static enum rte_flow_item_type
 118 mlx5_flow_expand_rss_item_complete(const struct rte_flow_item *item)
 119 {
 120         enum rte_flow_item_type ret = RTE_FLOW_ITEM_TYPE_VOID;
 121         uint16_t ether_type = 0;
 122         uint16_t ether_type_m;
 123         uint8_t ip_next_proto = 0;
 124         uint8_t ip_next_proto_m;
 125
 126         if (item == NULL || item->spec == NULL)
 127                 return ret;
 128         switch (item->type) {
 129         case RTE_FLOW_ITEM_TYPE_ETH:
 130                 if (item->mask)
 131                         ether_type_m = ((const struct rte_flow_item_eth *)
 132                                                 (item->mask))->type;
 133                 else
 134                         ether_type_m = rte_flow_item_eth_mask.type;
 135                 if (ether_type_m != RTE_BE16(0xFFFF))
 136                         break;
 137                 ether_type = ((const struct rte_flow_item_eth *)
 138                                 (item->spec))->type;
 139                 if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_IPV4)
 140                         ret = RTE_FLOW_ITEM_TYPE_IPV4;
 141                 else if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_IPV6)
 142                         ret = RTE_FLOW_ITEM_TYPE_IPV6;
 143                 else if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_VLAN)
 144                         ret = RTE_FLOW_ITEM_TYPE_VLAN;
 145                 else
 146                         ret = RTE_FLOW_ITEM_TYPE_END;
 147                 break;
 148         case RTE_FLOW_ITEM_TYPE_VLAN:
 149                 if (item->mask)
 150                         ether_type_m = ((const struct rte_flow_item_vlan *)
 151                                                 (item->mask))->inner_type;
 152                 else
 153                         ether_type_m = rte_flow_item_vlan_mask.inner_type;
 154                 if (ether_type_m != RTE_BE16(0xFFFF))
 155                         break;
 156                 ether_type = ((const struct rte_flow_item_vlan *)
 157                                 (item->spec))->inner_type;
 158                 if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_IPV4)
 159                         ret = RTE_FLOW_ITEM_TYPE_IPV4;
 160                 else if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_IPV6)
 161                         ret = RTE_FLOW_ITEM_TYPE_IPV6;
 162                 else if (rte_be_to_cpu_16(ether_type) == RTE_ETHER_TYPE_VLAN)
 163                         ret = RTE_FLOW_ITEM_TYPE_VLAN;
 164                 else
 165                         ret = RTE_FLOW_ITEM_TYPE_END;
 166                 break;
 167         case RTE_FLOW_ITEM_TYPE_IPV4:
 168                 if (item->mask)
 169                         ip_next_proto_m = ((const struct rte_flow_item_ipv4 *)
 170                                         (item->mask))->hdr.next_proto_id;
 171                 else
 172                         ip_next_proto_m =
 173                                 rte_flow_item_ipv4_mask.hdr.next_proto_id;
 174                 if (ip_next_proto_m != 0xFF)
 175                         break;
 176                 ip_next_proto = ((const struct rte_flow_item_ipv4 *)
 177                                 (item->spec))->hdr.next_proto_id;
 178                 if (ip_next_proto == IPPROTO_UDP)
 179                         ret = RTE_FLOW_ITEM_TYPE_UDP;
 180                 else if (ip_next_proto == IPPROTO_TCP)
 181                         ret = RTE_FLOW_ITEM_TYPE_TCP;
 182                 else if (ip_next_proto == IPPROTO_IP)
 183                         ret = RTE_FLOW_ITEM_TYPE_IPV4;
 184                 else if (ip_next_proto == IPPROTO_IPV6)
 185                         ret = RTE_FLOW_ITEM_TYPE_IPV6;
 186                 else
 187                         ret = RTE_FLOW_ITEM_TYPE_END;
 188                 break;
 189         case RTE_FLOW_ITEM_TYPE_IPV6:
 190                 if (item->mask)
 191                         ip_next_proto_m = ((const struct rte_flow_item_ipv6 *)
 192                                                 (item->mask))->hdr.proto;
 193                 else
 194                         ip_next_proto_m =
 195                                 rte_flow_item_ipv6_mask.hdr.proto;
 196                 if (ip_next_proto_m != 0xFF)
 197                         break;
 198                 ip_next_proto = ((const struct rte_flow_item_ipv6 *)
 199                                 (item->spec))->hdr.proto;
 200                 if (ip_next_proto == IPPROTO_UDP)
 201                         ret = RTE_FLOW_ITEM_TYPE_UDP;
 202                 else if (ip_next_proto == IPPROTO_TCP)
 203                         ret = RTE_FLOW_ITEM_TYPE_TCP;
 204                 else if (ip_next_proto == IPPROTO_IP)
 205                         ret = RTE_FLOW_ITEM_TYPE_IPV4;
 206                 else if (ip_next_proto == IPPROTO_IPV6)
 207                         ret = RTE_FLOW_ITEM_TYPE_IPV6;
 208                 else
 209                         ret = RTE_FLOW_ITEM_TYPE_END;
 210                 break;
 211         default:
 212                 ret = RTE_FLOW_ITEM_TYPE_VOID;
 213                 break;
 214         }
 215         return ret;
 216 }
 217
 218 #define MLX5_RSS_EXP_ELT_N 16
 219
 220 /**
 221  * Expand RSS flows into several possible flows according to the RSS hash
 222  * fields requested and the driver capabilities.
 223  *
 224  * @param[out] buf
 225  *   Buffer to store the result expansion.
 226  * @param[in] size
 227  *   Buffer size in bytes. If 0, @p buf can be NULL.
 228  * @param[in] pattern
 229  *   User flow pattern.
 230  * @param[in] types
 231  *   RSS types to expand (see ETH_RSS_* definitions).
 232  * @param[in] graph
 233  *   Input graph to expand @p pattern according to @p types.
 234  * @param[in] graph_root_index
 235  *   Index of root node in @p graph, typically 0.
 236  *
 237  * @return
 238  *   A positive value representing the size of @p buf in bytes regardless of
 239  *   @p size on success, a negative errno value otherwise and rte_errno is
 240  *   set, the following errors are defined:
 241  *
 242  *   -E2BIG: graph-depth @p graph is too deep.
 243  */
 244 static int
 245 mlx5_flow_expand_rss(struct mlx5_flow_expand_rss *buf, size_t size,
 246                      const struct rte_flow_item *pattern, uint64_t types,
 247                      const struct mlx5_flow_expand_node graph[],
 248                      int graph_root_index)
 249 {
 250         const struct rte_flow_item *item;
 251         const struct mlx5_flow_expand_node *node = &graph[graph_root_index];
 252         const int *next_node;
 253         const int *stack[MLX5_RSS_EXP_ELT_N];
 254         int stack_pos = 0;
 255         struct rte_flow_item flow_items[MLX5_RSS_EXP_ELT_N];
 256         unsigned int i;
 257         size_t lsize;
 258         size_t user_pattern_size = 0;
 259         void *addr = NULL;
 260         const struct mlx5_flow_expand_node *next = NULL;
 261         struct rte_flow_item missed_item;
 262         int missed = 0;
 263         int elt = 0;
 264         const struct rte_flow_item *last_item = NULL;
 265
 266         memset(&missed_item, 0, sizeof(missed_item));
 267         lsize = offsetof(struct mlx5_flow_expand_rss, entry) +
 268                 MLX5_RSS_EXP_ELT_N * sizeof(buf->entry[0]);
 269         if (lsize <= size) {
 270                 buf->entry[0].priority = 0;
 271                 buf->entry[0].pattern = (void *)&buf->entry[MLX5_RSS_EXP_ELT_N];
 272                 buf->entries = 0;
 273                 addr = buf->entry[0].pattern;
 274         }
 275         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
 276                 if (item->type != RTE_FLOW_ITEM_TYPE_VOID)
 277                         last_item = item;
 278                 for (i = 0; node->next && node->next[i]; ++i) {
 279                         next = &graph[node->next[i]];
 280                         if (next->type == item->type)
 281                                 break;
 282                 }
 283                 if (next)
 284                         node = next;
 285                 user_pattern_size += sizeof(*item);
 286         }
 287         user_pattern_size += sizeof(*item); /* Handle END item. */
 288         lsize += user_pattern_size;
 289         /* Copy the user pattern in the first entry of the buffer. */
 290         if (lsize <= size) {
 291                 rte_memcpy(addr, pattern, user_pattern_size);
 292                 addr = (void *)(((uintptr_t)addr) + user_pattern_size);
 293                 buf->entries = 1;
 294         }
 295         /* Start expanding. */
 296         memset(flow_items, 0, sizeof(flow_items));
 297         user_pattern_size -= sizeof(*item);
 298         /*
 299          * Check if the last valid item has spec set, need complete pattern,
 300          * and the pattern can be used for expansion.
 301          */
 302         missed_item.type = mlx5_flow_expand_rss_item_complete(last_item);
 303         if (missed_item.type == RTE_FLOW_ITEM_TYPE_END) {
 304                 /* Item type END indicates expansion is not required. */
 305                 return lsize;
 306         }
 307         if (missed_item.type != RTE_FLOW_ITEM_TYPE_VOID) {
 308                 next = NULL;
 309                 missed = 1;
 310                 for (i = 0; node->next && node->next[i]; ++i) {
 311                         next = &graph[node->next[i]];
 312                         if (next->type == missed_item.type) {
 313                                 flow_items[0].type = missed_item.type;
 314                                 flow_items[1].type = RTE_FLOW_ITEM_TYPE_END;
 315                                 break;
 316                         }
 317                         next = NULL;
 318                 }
 319         }
 320         if (next && missed) {
 321                 elt = 2; /* missed item + item end. */
 322                 node = next;
 323                 lsize += elt * sizeof(*item) + user_pattern_size;
 324                 if ((node->rss_types & types) && lsize <= size) {
 325                         buf->entry[buf->entries].priority = 1;
 326                         buf->entry[buf->entries].pattern = addr;
 327                         buf->entries++;
 328                         rte_memcpy(addr, buf->entry[0].pattern,
 329                                    user_pattern_size);
 330                         addr = (void *)(((uintptr_t)addr) + user_pattern_size);
 331                         rte_memcpy(addr, flow_items, elt * sizeof(*item));
 332                         addr = (void *)(((uintptr_t)addr) +
 333                                         elt * sizeof(*item));
 334                 }
 335         }
 336         memset(flow_items, 0, sizeof(flow_items));
 337         next_node = node->next;
 338         stack[stack_pos] = next_node;
 339         node = next_node ? &graph[*next_node] : NULL;
 340         while (node) {
 341                 flow_items[stack_pos].type = node->type;
 342                 if (node->rss_types & types) {
 343                         /*
 344                          * compute the number of items to copy from the
 345                          * expansion and copy it.
 346                          * When the stack_pos is 0, there are 1 element in it,
 347                          * plus the addition END item.
 348                          */
 349                         elt = stack_pos + 2;
 350                         flow_items[stack_pos + 1].type = RTE_FLOW_ITEM_TYPE_END;
 351                         lsize += elt * sizeof(*item) + user_pattern_size;
 352                         if (lsize <= size) {
 353                                 size_t n = elt * sizeof(*item);
 354
 355                                 buf->entry[buf->entries].priority =
 356                                         stack_pos + 1 + missed;
 357                                 buf->entry[buf->entries].pattern = addr;
 358                                 buf->entries++;
 359                                 rte_memcpy(addr, buf->entry[0].pattern,
 360                                            user_pattern_size);
 361                                 addr = (void *)(((uintptr_t)addr) +
 362                                                 user_pattern_size);
 363                                 rte_memcpy(addr, &missed_item,
 364                                            missed * sizeof(*item));
 365                                 addr = (void *)(((uintptr_t)addr) +
 366                                         missed * sizeof(*item));
 367                                 rte_memcpy(addr, flow_items, n);
 368                                 addr = (void *)(((uintptr_t)addr) + n);
 369                         }
 370                 }
 371                 /* Go deeper. */
 372                 if (!node->optional && node->next) {
 373                         next_node = node->next;
 374                         if (stack_pos++ == MLX5_RSS_EXP_ELT_N) {
 375                                 rte_errno = E2BIG;
 376                                 return -rte_errno;
 377                         }
 378                         stack[stack_pos] = next_node;
 379                 } else if (*(next_node + 1)) {
 380                         /* Follow up with the next possibility. */
 381                         ++next_node;
 382                 } else {
 383                         /* Move to the next path. */
 384                         if (stack_pos)
 385                                 next_node = stack[--stack_pos];
 386                         next_node++;
 387                         stack[stack_pos] = next_node;
 388                 }
 389                 node = *next_node ? &graph[*next_node] : NULL;
 390         };
 391         return lsize;
 392 }
 393
 394 enum mlx5_expansion {
 395         MLX5_EXPANSION_ROOT,
 396         MLX5_EXPANSION_ROOT_OUTER,
 397         MLX5_EXPANSION_ROOT_ETH_VLAN,
 398         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
 399         MLX5_EXPANSION_OUTER_ETH,
 400         MLX5_EXPANSION_OUTER_ETH_VLAN,
 401         MLX5_EXPANSION_OUTER_VLAN,
 402         MLX5_EXPANSION_OUTER_IPV4,
 403         MLX5_EXPANSION_OUTER_IPV4_UDP,
 404         MLX5_EXPANSION_OUTER_IPV4_TCP,
 405         MLX5_EXPANSION_OUTER_IPV6,
 406         MLX5_EXPANSION_OUTER_IPV6_UDP,
 407         MLX5_EXPANSION_OUTER_IPV6_TCP,
 408         MLX5_EXPANSION_VXLAN,
 409         MLX5_EXPANSION_VXLAN_GPE,
 410         MLX5_EXPANSION_GRE,
 411         MLX5_EXPANSION_NVGRE,
 412         MLX5_EXPANSION_GRE_KEY,
 413         MLX5_EXPANSION_MPLS,
 414         MLX5_EXPANSION_ETH,
 415         MLX5_EXPANSION_ETH_VLAN,
 416         MLX5_EXPANSION_VLAN,
 417         MLX5_EXPANSION_IPV4,
 418         MLX5_EXPANSION_IPV4_UDP,
 419         MLX5_EXPANSION_IPV4_TCP,
 420         MLX5_EXPANSION_IPV6,
 421         MLX5_EXPANSION_IPV6_UDP,
 422         MLX5_EXPANSION_IPV6_TCP,
 423 };
 424
 425 /** Supported expansion of items. */
 426 static const struct mlx5_flow_expand_node mlx5_support_expansion[] = {
 427         [MLX5_EXPANSION_ROOT] = {
 428                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 429                                                   MLX5_EXPANSION_IPV4,
 430                                                   MLX5_EXPANSION_IPV6),
 431                 .type = RTE_FLOW_ITEM_TYPE_END,
 432         },
 433         [MLX5_EXPANSION_ROOT_OUTER] = {
 434                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
 435                                                   MLX5_EXPANSION_OUTER_IPV4,
 436                                                   MLX5_EXPANSION_OUTER_IPV6),
 437                 .type = RTE_FLOW_ITEM_TYPE_END,
 438         },
 439         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 440                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 441                 .type = RTE_FLOW_ITEM_TYPE_END,
 442         },
 443         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 444                 .next = MLX5_FLOW_EXPAND_RSS_NEXT
 445                                                 (MLX5_EXPANSION_OUTER_ETH_VLAN),
 446                 .type = RTE_FLOW_ITEM_TYPE_END,
 447         },
 448         [MLX5_EXPANSION_OUTER_ETH] = {
 449                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 450                                                   MLX5_EXPANSION_OUTER_IPV6,
 451                                                   MLX5_EXPANSION_MPLS),
 452                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 453                 .rss_types = 0,
 454         },
 455         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 456                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 457                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 458                 .rss_types = 0,
 459         },
 460         [MLX5_EXPANSION_OUTER_VLAN] = {
 461                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 462                                                   MLX5_EXPANSION_OUTER_IPV6),
 463                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 464         },
 465         [MLX5_EXPANSION_OUTER_IPV4] = {
 466                 .next = MLX5_FLOW_EXPAND_RSS_NEXT
 467                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 468                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 469                          MLX5_EXPANSION_GRE,
 470                          MLX5_EXPANSION_NVGRE,
 471                          MLX5_EXPANSION_IPV4,
 472                          MLX5_EXPANSION_IPV6),
 473                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 474                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 475                         ETH_RSS_NONFRAG_IPV4_OTHER,
 476         },
 477         [MLX5_EXPANSION_OUTER_IPV4_UDP] = {
 478                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 479                                                   MLX5_EXPANSION_VXLAN_GPE),
 480                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 481                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 482         },
 483         [MLX5_EXPANSION_OUTER_IPV4_TCP] = {
 484                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 485                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 486         },
 487         [MLX5_EXPANSION_OUTER_IPV6] = {
 488                 .next = MLX5_FLOW_EXPAND_RSS_NEXT
 489                         (MLX5_EXPANSION_OUTER_IPV6_UDP,
 490                          MLX5_EXPANSION_OUTER_IPV6_TCP,
 491                          MLX5_EXPANSION_IPV4,
 492                          MLX5_EXPANSION_IPV6,
 493                          MLX5_EXPANSION_GRE,
 494                          MLX5_EXPANSION_NVGRE),
 495                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 496                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 497                         ETH_RSS_NONFRAG_IPV6_OTHER,
 498         },
 499         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 500                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 501                                                   MLX5_EXPANSION_VXLAN_GPE),
 502                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 503                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 504         },
 505         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 506                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 507                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 508         },
 509         [MLX5_EXPANSION_VXLAN] = {
 510                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 511                                                   MLX5_EXPANSION_IPV4,
 512                                                   MLX5_EXPANSION_IPV6),
 513                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 514         },
 515         [MLX5_EXPANSION_VXLAN_GPE] = {
 516                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 517                                                   MLX5_EXPANSION_IPV4,
 518                                                   MLX5_EXPANSION_IPV6),
 519                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 520         },
 521         [MLX5_EXPANSION_GRE] = {
 522                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 523                                                   MLX5_EXPANSION_IPV6,
 524                                                   MLX5_EXPANSION_GRE_KEY),
 525                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 526         },
 527         [MLX5_EXPANSION_GRE_KEY] = {
 528                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 529                                                   MLX5_EXPANSION_IPV6),
 530                 .type = RTE_FLOW_ITEM_TYPE_GRE_KEY,
 531                 .optional = 1,
 532         },
 533         [MLX5_EXPANSION_NVGRE] = {
 534                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
 535                 .type = RTE_FLOW_ITEM_TYPE_NVGRE,
 536         },
 537         [MLX5_EXPANSION_MPLS] = {
 538                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 539                                                   MLX5_EXPANSION_IPV6),
 540                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 541         },
 542         [MLX5_EXPANSION_ETH] = {
 543                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 544                                                   MLX5_EXPANSION_IPV6),
 545                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 546         },
 547         [MLX5_EXPANSION_ETH_VLAN] = {
 548                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 549                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 550         },
 551         [MLX5_EXPANSION_VLAN] = {
 552                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 553                                                   MLX5_EXPANSION_IPV6),
 554                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 555         },
 556         [MLX5_EXPANSION_IPV4] = {
 557                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 558                                                   MLX5_EXPANSION_IPV4_TCP),
 559                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 560                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 561                         ETH_RSS_NONFRAG_IPV4_OTHER,
 562         },
 563         [MLX5_EXPANSION_IPV4_UDP] = {
 564                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 565                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 566         },
 567         [MLX5_EXPANSION_IPV4_TCP] = {
 568                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 569                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 570         },
 571         [MLX5_EXPANSION_IPV6] = {
 572                 .next = MLX5_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 573                                                   MLX5_EXPANSION_IPV6_TCP),
 574                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 575                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 576                         ETH_RSS_NONFRAG_IPV6_OTHER,
 577         },
 578         [MLX5_EXPANSION_IPV6_UDP] = {
 579                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 580                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 581         },
 582         [MLX5_EXPANSION_IPV6_TCP] = {
 583                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 584                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 585         },
 586 };
 587
 588 static struct rte_flow_action_handle *
 589 mlx5_action_handle_create(struct rte_eth_dev *dev,
 590                           const struct rte_flow_indir_action_conf *conf,
 591                           const struct rte_flow_action *action,
 592                           struct rte_flow_error *error);
 593 static int mlx5_action_handle_destroy
 594                                 (struct rte_eth_dev *dev,
 595                                  struct rte_flow_action_handle *handle,
 596                                  struct rte_flow_error *error);
 597 static int mlx5_action_handle_update
 598                                 (struct rte_eth_dev *dev,
 599                                  struct rte_flow_action_handle *handle,
 600                                  const void *update,
 601                                  struct rte_flow_error *error);
 602 static int mlx5_action_handle_query
 603                                 (struct rte_eth_dev *dev,
 604                                  const struct rte_flow_action_handle *handle,
 605                                  void *data,
 606                                  struct rte_flow_error *error);
 607 static int
 608 mlx5_flow_tunnel_decap_set(struct rte_eth_dev *dev,
 609                     struct rte_flow_tunnel *app_tunnel,
 610                     struct rte_flow_action **actions,
 611                     uint32_t *num_of_actions,
 612                     struct rte_flow_error *error);
 613 static int
 614 mlx5_flow_tunnel_match(struct rte_eth_dev *dev,
 615                        struct rte_flow_tunnel *app_tunnel,
 616                        struct rte_flow_item **items,
 617                        uint32_t *num_of_items,
 618                        struct rte_flow_error *error);
 619 static int
 620 mlx5_flow_tunnel_item_release(struct rte_eth_dev *dev,
 621                               struct rte_flow_item *pmd_items,
 622                               uint32_t num_items, struct rte_flow_error *err);
 623 static int
 624 mlx5_flow_tunnel_action_release(struct rte_eth_dev *dev,
 625                                 struct rte_flow_action *pmd_actions,
 626                                 uint32_t num_actions,
 627                                 struct rte_flow_error *err);
 628 static int
 629 mlx5_flow_tunnel_get_restore_info(struct rte_eth_dev *dev,
 630                                   struct rte_mbuf *m,
 631                                   struct rte_flow_restore_info *info,
 632                                   struct rte_flow_error *err);
 633
 634 static const struct rte_flow_ops mlx5_flow_ops = {
 635         .validate = mlx5_flow_validate,
 636         .create = mlx5_flow_create,
 637         .destroy = mlx5_flow_destroy,
 638         .flush = mlx5_flow_flush,
 639         .isolate = mlx5_flow_isolate,
 640         .query = mlx5_flow_query,
 641         .dev_dump = mlx5_flow_dev_dump,
 642         .get_aged_flows = mlx5_flow_get_aged_flows,
 643         .action_handle_create = mlx5_action_handle_create,
 644         .action_handle_destroy = mlx5_action_handle_destroy,
 645         .action_handle_update = mlx5_action_handle_update,
 646         .action_handle_query = mlx5_action_handle_query,
 647         .tunnel_decap_set = mlx5_flow_tunnel_decap_set,
 648         .tunnel_match = mlx5_flow_tunnel_match,
 649         .tunnel_action_decap_release = mlx5_flow_tunnel_action_release,
 650         .tunnel_item_release = mlx5_flow_tunnel_item_release,
 651         .get_restore_info = mlx5_flow_tunnel_get_restore_info,
 652 };
 653
 654 /* Tunnel information. */
 655 struct mlx5_flow_tunnel_info {
 656         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 657         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 658 };
 659
 660 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 661         {
 662                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 663                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 664         },
 665         {
 666                 .tunnel = MLX5_FLOW_LAYER_GENEVE,
 667                 .ptype = RTE_PTYPE_TUNNEL_GENEVE | RTE_PTYPE_L4_UDP,
 668         },
 669         {
 670                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 671                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 672         },
 673         {
 674                 .tunnel = MLX5_FLOW_LAYER_GRE,
 675                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 676         },
 677         {
 678                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 679                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
 680         },
 681         {
 682                 .tunnel = MLX5_FLOW_LAYER_MPLS,
 683                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 684         },
 685         {
 686                 .tunnel = MLX5_FLOW_LAYER_NVGRE,
 687                 .ptype = RTE_PTYPE_TUNNEL_NVGRE,
 688         },
 689         {
 690                 .tunnel = MLX5_FLOW_LAYER_IPIP,
 691                 .ptype = RTE_PTYPE_TUNNEL_IP,
 692         },
 693         {
 694                 .tunnel = MLX5_FLOW_LAYER_IPV6_ENCAP,
 695                 .ptype = RTE_PTYPE_TUNNEL_IP,
 696         },
 697         {
 698                 .tunnel = MLX5_FLOW_LAYER_GTP,
 699                 .ptype = RTE_PTYPE_TUNNEL_GTPU,
 700         },
 701 };
 702
 703
 704
 705 /**
 706  * Translate tag ID to register.
 707  *
 708  * @param[in] dev
 709  *   Pointer to the Ethernet device structure.
 710  * @param[in] feature
 711  *   The feature that request the register.
 712  * @param[in] id
 713  *   The request register ID.
 714  * @param[out] error
 715  *   Error description in case of any.
 716  *
 717  * @return
 718  *   The request register on success, a negative errno
 719  *   value otherwise and rte_errno is set.
 720  */
 721 int
 722 mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 723                      enum mlx5_feature_name feature,
 724                      uint32_t id,
 725                      struct rte_flow_error *error)
 726 {
 727         struct mlx5_priv *priv = dev->data->dev_private;
 728         struct mlx5_dev_config *config = &priv->config;
 729         enum modify_reg start_reg;
 730         bool skip_mtr_reg = false;
 731
 732         switch (feature) {
 733         case MLX5_HAIRPIN_RX:
 734                 return REG_B;
 735         case MLX5_HAIRPIN_TX:
 736                 return REG_A;
 737         case MLX5_METADATA_RX:
 738                 switch (config->dv_xmeta_en) {
 739                 case MLX5_XMETA_MODE_LEGACY:
 740                         return REG_B;
 741                 case MLX5_XMETA_MODE_META16:
 742                         return REG_C_0;
 743                 case MLX5_XMETA_MODE_META32:
 744                         return REG_C_1;
 745                 }
 746                 break;
 747         case MLX5_METADATA_TX:
 748                 return REG_A;
 749         case MLX5_METADATA_FDB:
 750                 switch (config->dv_xmeta_en) {
 751                 case MLX5_XMETA_MODE_LEGACY:
 752                         return REG_NON;
 753                 case MLX5_XMETA_MODE_META16:
 754                         return REG_C_0;
 755                 case MLX5_XMETA_MODE_META32:
 756                         return REG_C_1;
 757                 }
 758                 break;
 759         case MLX5_FLOW_MARK:
 760                 switch (config->dv_xmeta_en) {
 761                 case MLX5_XMETA_MODE_LEGACY:
 762                         return REG_NON;
 763                 case MLX5_XMETA_MODE_META16:
 764                         return REG_C_1;
 765                 case MLX5_XMETA_MODE_META32:
 766                         return REG_C_0;
 767                 }
 768                 break;
 769         case MLX5_MTR_ID:
 770                 /*
 771                  * If meter color and meter id share one register, flow match
 772                  * should use the meter color register for match.
 773                  */
 774                 if (priv->mtr_reg_share)
 775                         return priv->mtr_color_reg;
 776                 else
 777                         return priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 778                                REG_C_3;
 779         case MLX5_MTR_COLOR:
 780         case MLX5_ASO_FLOW_HIT:
 781         case MLX5_ASO_CONNTRACK:
 782                 /* All features use the same REG_C. */
 783                 MLX5_ASSERT(priv->mtr_color_reg != REG_NON);
 784                 return priv->mtr_color_reg;
 785         case MLX5_COPY_MARK:
 786                 /*
 787                  * Metadata COPY_MARK register using is in meter suffix sub
 788                  * flow while with meter. It's safe to share the same register.
 789                  */
 790                 return priv->mtr_color_reg != REG_C_2 ? REG_C_2 : REG_C_3;
 791         case MLX5_APP_TAG:
 792                 /*
 793                  * If meter is enable, it will engage the register for color
 794                  * match and flow match. If meter color match is not using the
 795                  * REG_C_2, need to skip the REG_C_x be used by meter color
 796                  * match.
 797                  * If meter is disable, free to use all available registers.
 798                  */
 799                 start_reg = priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 800                             (priv->mtr_reg_share ? REG_C_3 : REG_C_4);
 801                 skip_mtr_reg = !!(priv->mtr_en && start_reg == REG_C_2);
 802                 if (id > (uint32_t)(REG_C_7 - start_reg))
 803                         return rte_flow_error_set(error, EINVAL,
 804                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 805                                                   NULL, "invalid tag id");
 806                 if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NON)
 807                         return rte_flow_error_set(error, ENOTSUP,
 808                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 809                                                   NULL, "unsupported tag id");
 810                 /*
 811                  * This case means meter is using the REG_C_x great than 2.
 812                  * Take care not to conflict with meter color REG_C_x.
 813                  * If the available index REG_C_y >= REG_C_x, skip the
 814                  * color register.
 815                  */
 816                 if (skip_mtr_reg && config->flow_mreg_c
 817                     [id + start_reg - REG_C_0] >= priv->mtr_color_reg) {
 818                         if (id >= (uint32_t)(REG_C_7 - start_reg))
 819                                 return rte_flow_error_set(error, EINVAL,
 820                                                        RTE_FLOW_ERROR_TYPE_ITEM,
 821                                                         NULL, "invalid tag id");
 822                         if (config->flow_mreg_c
 823                             [id + 1 + start_reg - REG_C_0] != REG_NON)
 824                                 return config->flow_mreg_c
 825                                                [id + 1 + start_reg - REG_C_0];
 826                         return rte_flow_error_set(error, ENOTSUP,
 827                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 828                                                   NULL, "unsupported tag id");
 829                 }
 830                 return config->flow_mreg_c[id + start_reg - REG_C_0];
 831         }
 832         MLX5_ASSERT(false);
 833         return rte_flow_error_set(error, EINVAL,
 834                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 835                                   NULL, "invalid feature name");
 836 }
 837
 838 /**
 839  * Check extensive flow metadata register support.
 840  *
 841  * @param dev
 842  *   Pointer to rte_eth_dev structure.
 843  *
 844  * @return
 845  *   True if device supports extensive flow metadata register, otherwise false.
 846  */
 847 bool
 848 mlx5_flow_ext_mreg_supported(struct rte_eth_dev *dev)
 849 {
 850         struct mlx5_priv *priv = dev->data->dev_private;
 851         struct mlx5_dev_config *config = &priv->config;
 852
 853         /*
 854          * Having available reg_c can be regarded inclusively as supporting
 855          * extensive flow metadata register, which could mean,
 856          * - metadata register copy action by modify header.
 857          * - 16 modify header actions is supported.
 858          * - reg_c's are preserved across different domain (FDB and NIC) on
 859          *   packet loopback by flow lookup miss.
 860          */
 861         return config->flow_mreg_c[2] != REG_NON;
 862 }
 863
 864 /**
 865  * Get the lowest priority.
 866  *
 867  * @param[in] dev
 868  *   Pointer to the Ethernet device structure.
 869  * @param[in] attributes
 870  *   Pointer to device flow rule attributes.
 871  *
 872  * @return
 873  *   The value of lowest priority of flow.
 874  */
 875 uint32_t
 876 mlx5_get_lowest_priority(struct rte_eth_dev *dev,
 877                           const struct rte_flow_attr *attr)
 878 {
 879         struct mlx5_priv *priv = dev->data->dev_private;
 880
 881         if (!attr->group && !attr->transfer)
 882                 return priv->config.flow_prio - 2;
 883         return MLX5_NON_ROOT_FLOW_MAX_PRIO - 1;
 884 }
 885
 886 /**
 887  * Calculate matcher priority of the flow.
 888  *
 889  * @param[in] dev
 890  *   Pointer to the Ethernet device structure.
 891  * @param[in] attr
 892  *   Pointer to device flow rule attributes.
 893  * @param[in] subpriority
 894  *   The priority based on the items.
 895  * @return
 896  *   The matcher priority of the flow.
 897  */
 898 uint16_t
 899 mlx5_get_matcher_priority(struct rte_eth_dev *dev,
 900                           const struct rte_flow_attr *attr,
 901                           uint32_t subpriority)
 902 {
 903         uint16_t priority = (uint16_t)attr->priority;
 904         struct mlx5_priv *priv = dev->data->dev_private;
 905
 906         if (!attr->group && !attr->transfer) {
 907                 if (attr->priority == MLX5_FLOW_LOWEST_PRIO_INDICATOR)
 908                         priority = priv->config.flow_prio - 1;
 909                 return mlx5_os_flow_adjust_priority(dev, priority, subpriority);
 910         }
 911         if (attr->priority == MLX5_FLOW_LOWEST_PRIO_INDICATOR)
 912                 priority = MLX5_NON_ROOT_FLOW_MAX_PRIO;
 913         return priority * 3 + subpriority;
 914 }
 915
 916 /**
 917  * Verify the @p item specifications (spec, last, mask) are compatible with the
 918  * NIC capabilities.
 919  *
 920  * @param[in] item
 921  *   Item specification.
 922  * @param[in] mask
 923  *   @p item->mask or flow default bit-masks.
 924  * @param[in] nic_mask
 925  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 926  * @param[in] size
 927  *   Bit-masks size in bytes.
 928  * @param[in] range_accepted
 929  *   True if range of values is accepted for specific fields, false otherwise.
 930  * @param[out] error
 931  *   Pointer to error structure.
 932  *
 933  * @return
 934  *   0 on success, a negative errno value otherwise and rte_errno is set.
 935  */
 936 int
 937 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 938                           const uint8_t *mask,
 939                           const uint8_t *nic_mask,
 940                           unsigned int size,
 941                           bool range_accepted,
 942                           struct rte_flow_error *error)
 943 {
 944         unsigned int i;
 945
 946         MLX5_ASSERT(nic_mask);
 947         for (i = 0; i < size; ++i)
 948                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 949                         return rte_flow_error_set(error, ENOTSUP,
 950                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 951                                                   item,
 952                                                   "mask enables non supported"
 953                                                   " bits");
 954         if (!item->spec && (item->mask || item->last))
 955                 return rte_flow_error_set(error, EINVAL,
 956                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 957                                           "mask/last without a spec is not"
 958                                           " supported");
 959         if (item->spec && item->last && !range_accepted) {
 960                 uint8_t spec[size];
 961                 uint8_t last[size];
 962                 unsigned int i;
 963                 int ret;
 964
 965                 for (i = 0; i < size; ++i) {
 966                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 967                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 968                 }
 969                 ret = memcmp(spec, last, size);
 970                 if (ret != 0)
 971                         return rte_flow_error_set(error, EINVAL,
 972                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 973                                                   item,
 974                                                   "range is not valid");
 975         }
 976         return 0;
 977 }
 978
 979 /**
 980  * Adjust the hash fields according to the @p flow information.
 981  *
 982  * @param[in] dev_flow.
 983  *   Pointer to the mlx5_flow.
 984  * @param[in] tunnel
 985  *   1 when the hash field is for a tunnel item.
 986  * @param[in] layer_types
 987  *   ETH_RSS_* types.
 988  * @param[in] hash_fields
 989  *   Item hash fields.
 990  *
 991  * @return
 992  *   The hash fields that should be used.
 993  */
 994 uint64_t
 995 mlx5_flow_hashfields_adjust(struct mlx5_flow_rss_desc *rss_desc,
 996                             int tunnel __rte_unused, uint64_t layer_types,
 997                             uint64_t hash_fields)
 998 {
 999 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1000         int rss_request_inner = rss_desc->level >= 2;
1001
1002         /* Check RSS hash level for tunnel. */
1003         if (tunnel && rss_request_inner)
1004                 hash_fields |= IBV_RX_HASH_INNER;
1005         else if (tunnel || rss_request_inner)
1006                 return 0;
1007 #endif
1008         /* Check if requested layer matches RSS hash fields. */
1009         if (!(rss_desc->types & layer_types))
1010                 return 0;
1011         return hash_fields;
1012 }
1013
1014 /**
1015  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
1016  * if several tunnel rules are used on this queue, the tunnel ptype will be
1017  * cleared.
1018  *
1019  * @param rxq_ctrl
1020  *   Rx queue to update.
1021  */
1022 static void
1023 flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
1024 {
1025         unsigned int i;
1026         uint32_t tunnel_ptype = 0;
1027
1028         /* Look up for the ptype to use. */
1029         for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
1030                 if (!rxq_ctrl->flow_tunnels_n[i])
1031                         continue;
1032                 if (!tunnel_ptype) {
1033                         tunnel_ptype = tunnels_info[i].ptype;
1034                 } else {
1035                         tunnel_ptype = 0;
1036                         break;
1037                 }
1038         }
1039         rxq_ctrl->rxq.tunnel = tunnel_ptype;
1040 }
1041
1042 /**
1043  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
1044  * flow.
1045  *
1046  * @param[in] dev
1047  *   Pointer to the Ethernet device structure.
1048  * @param[in] dev_handle
1049  *   Pointer to device flow handle structure.
1050  */
1051 void
1052 flow_drv_rxq_flags_set(struct rte_eth_dev *dev,
1053                        struct mlx5_flow_handle *dev_handle)
1054 {
1055         struct mlx5_priv *priv = dev->data->dev_private;
1056         const int mark = dev_handle->mark;
1057         const int tunnel = !!(dev_handle->layers & MLX5_FLOW_LAYER_TUNNEL);
1058         struct mlx5_ind_table_obj *ind_tbl = NULL;
1059         unsigned int i;
1060
1061         if (dev_handle->fate_action == MLX5_FLOW_FATE_QUEUE) {
1062                 struct mlx5_hrxq *hrxq;
1063
1064                 hrxq = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_HRXQ],
1065                               dev_handle->rix_hrxq);
1066                 if (hrxq)
1067                         ind_tbl = hrxq->ind_table;
1068         } else if (dev_handle->fate_action == MLX5_FLOW_FATE_SHARED_RSS) {
1069                 struct mlx5_shared_action_rss *shared_rss;
1070
1071                 shared_rss = mlx5_ipool_get
1072                         (priv->sh->ipool[MLX5_IPOOL_RSS_SHARED_ACTIONS],
1073                          dev_handle->rix_srss);
1074                 if (shared_rss)
1075                         ind_tbl = shared_rss->ind_tbl;
1076         }
1077         if (!ind_tbl)
1078                 return;
1079         for (i = 0; i != ind_tbl->queues_n; ++i) {
1080                 int idx = ind_tbl->queues[i];
1081                 struct mlx5_rxq_ctrl *rxq_ctrl =
1082                         container_of((*priv->rxqs)[idx],
1083                                      struct mlx5_rxq_ctrl, rxq);
1084
1085                 /*
1086                  * To support metadata register copy on Tx loopback,
1087                  * this must be always enabled (metadata may arive
1088                  * from other port - not from local flows only.
1089                  */
1090                 if (priv->config.dv_flow_en &&
1091                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1092                     mlx5_flow_ext_mreg_supported(dev)) {
1093                         rxq_ctrl->rxq.mark = 1;
1094                         rxq_ctrl->flow_mark_n = 1;
1095                 } else if (mark) {
1096                         rxq_ctrl->rxq.mark = 1;
1097                         rxq_ctrl->flow_mark_n++;
1098                 }
1099                 if (tunnel) {
1100                         unsigned int j;
1101
1102                         /* Increase the counter matching the flow. */
1103                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
1104                                 if ((tunnels_info[j].tunnel &
1105                                      dev_handle->layers) ==
1106                                     tunnels_info[j].tunnel) {
1107                                         rxq_ctrl->flow_tunnels_n[j]++;
1108                                         break;
1109                                 }
1110                         }
1111                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
1112                 }
1113         }
1114 }
1115
1116 /**
1117  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
1118  *
1119  * @param[in] dev
1120  *   Pointer to the Ethernet device structure.
1121  * @param[in] flow
1122  *   Pointer to flow structure.
1123  */
1124 static void
1125 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
1126 {
1127         struct mlx5_priv *priv = dev->data->dev_private;
1128         uint32_t handle_idx;
1129         struct mlx5_flow_handle *dev_handle;
1130
1131         SILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW], flow->dev_handles,
1132                        handle_idx, dev_handle, next)
1133                 flow_drv_rxq_flags_set(dev, dev_handle);
1134 }
1135
1136 /**
1137  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
1138  * device flow if no other flow uses it with the same kind of request.
1139  *
1140  * @param dev
1141  *   Pointer to Ethernet device.
1142  * @param[in] dev_handle
1143  *   Pointer to the device flow handle structure.
1144  */
1145 static void
1146 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev,
1147                         struct mlx5_flow_handle *dev_handle)
1148 {
1149         struct mlx5_priv *priv = dev->data->dev_private;
1150         const int mark = dev_handle->mark;
1151         const int tunnel = !!(dev_handle->layers & MLX5_FLOW_LAYER_TUNNEL);
1152         struct mlx5_ind_table_obj *ind_tbl = NULL;
1153         unsigned int i;
1154
1155         if (dev_handle->fate_action == MLX5_FLOW_FATE_QUEUE) {
1156                 struct mlx5_hrxq *hrxq;
1157
1158                 hrxq = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_HRXQ],
1159                               dev_handle->rix_hrxq);
1160                 if (hrxq)
1161                         ind_tbl = hrxq->ind_table;
1162         } else if (dev_handle->fate_action == MLX5_FLOW_FATE_SHARED_RSS) {
1163                 struct mlx5_shared_action_rss *shared_rss;
1164
1165                 shared_rss = mlx5_ipool_get
1166                         (priv->sh->ipool[MLX5_IPOOL_RSS_SHARED_ACTIONS],
1167                          dev_handle->rix_srss);
1168                 if (shared_rss)
1169                         ind_tbl = shared_rss->ind_tbl;
1170         }
1171         if (!ind_tbl)
1172                 return;
1173         MLX5_ASSERT(dev->data->dev_started);
1174         for (i = 0; i != ind_tbl->queues_n; ++i) {
1175                 int idx = ind_tbl->queues[i];
1176                 struct mlx5_rxq_ctrl *rxq_ctrl =
1177                         container_of((*priv->rxqs)[idx],
1178                                      struct mlx5_rxq_ctrl, rxq);
1179
1180                 if (priv->config.dv_flow_en &&
1181                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1182                     mlx5_flow_ext_mreg_supported(dev)) {
1183                         rxq_ctrl->rxq.mark = 1;
1184                         rxq_ctrl->flow_mark_n = 1;
1185                 } else if (mark) {
1186                         rxq_ctrl->flow_mark_n--;
1187                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
1188                 }
1189                 if (tunnel) {
1190                         unsigned int j;
1191
1192                         /* Decrease the counter matching the flow. */
1193                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
1194                                 if ((tunnels_info[j].tunnel &
1195                                      dev_handle->layers) ==
1196                                     tunnels_info[j].tunnel) {
1197                                         rxq_ctrl->flow_tunnels_n[j]--;
1198                                         break;
1199                                 }
1200                         }
1201                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
1202                 }
1203         }
1204 }
1205
1206 /**
1207  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
1208  * @p flow if no other flow uses it with the same kind of request.
1209  *
1210  * @param dev
1211  *   Pointer to Ethernet device.
1212  * @param[in] flow
1213  *   Pointer to the flow.
1214  */
1215 static void
1216 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
1217 {
1218         struct mlx5_priv *priv = dev->data->dev_private;
1219         uint32_t handle_idx;
1220         struct mlx5_flow_handle *dev_handle;
1221
1222         SILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW], flow->dev_handles,
1223                        handle_idx, dev_handle, next)
1224                 flow_drv_rxq_flags_trim(dev, dev_handle);
1225 }
1226
1227 /**
1228  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
1229  *
1230  * @param dev
1231  *   Pointer to Ethernet device.
1232  */
1233 static void
1234 flow_rxq_flags_clear(struct rte_eth_dev *dev)
1235 {
1236         struct mlx5_priv *priv = dev->data->dev_private;
1237         unsigned int i;
1238
1239         for (i = 0; i != priv->rxqs_n; ++i) {
1240                 struct mlx5_rxq_ctrl *rxq_ctrl;
1241                 unsigned int j;
1242
1243                 if (!(*priv->rxqs)[i])
1244                         continue;
1245                 rxq_ctrl = container_of((*priv->rxqs)[i],
1246                                         struct mlx5_rxq_ctrl, rxq);
1247                 rxq_ctrl->flow_mark_n = 0;
1248                 rxq_ctrl->rxq.mark = 0;
1249                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
1250                         rxq_ctrl->flow_tunnels_n[j] = 0;
1251                 rxq_ctrl->rxq.tunnel = 0;
1252         }
1253 }
1254
1255 /**
1256  * Set the Rx queue dynamic metadata (mask and offset) for a flow
1257  *
1258  * @param[in] dev
1259  *   Pointer to the Ethernet device structure.
1260  */
1261 void
1262 mlx5_flow_rxq_dynf_metadata_set(struct rte_eth_dev *dev)
1263 {
1264         struct mlx5_priv *priv = dev->data->dev_private;
1265         struct mlx5_rxq_data *data;
1266         unsigned int i;
1267
1268         for (i = 0; i != priv->rxqs_n; ++i) {
1269                 if (!(*priv->rxqs)[i])
1270                         continue;
1271                 data = (*priv->rxqs)[i];
1272                 if (!rte_flow_dynf_metadata_avail()) {
1273                         data->dynf_meta = 0;
1274                         data->flow_meta_mask = 0;
1275                         data->flow_meta_offset = -1;
1276                         data->flow_meta_port_mask = 0;
1277                 } else {
1278                         data->dynf_meta = 1;
1279                         data->flow_meta_mask = rte_flow_dynf_metadata_mask;
1280                         data->flow_meta_offset = rte_flow_dynf_metadata_offs;
1281                         data->flow_meta_port_mask = (uint32_t)~0;
1282                         if (priv->config.dv_xmeta_en == MLX5_XMETA_MODE_META16)
1283                                 data->flow_meta_port_mask >>= 16;
1284                 }
1285         }
1286 }
1287
1288 /*
1289  * return a pointer to the desired action in the list of actions.
1290  *
1291  * @param[in] actions
1292  *   The list of actions to search the action in.
1293  * @param[in] action
1294  *   The action to find.
1295  *
1296  * @return
1297  *   Pointer to the action in the list, if found. NULL otherwise.
1298  */
1299 const struct rte_flow_action *
1300 mlx5_flow_find_action(const struct rte_flow_action *actions,
1301                       enum rte_flow_action_type action)
1302 {
1303         if (actions == NULL)
1304                 return NULL;
1305         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++)
1306                 if (actions->type == action)
1307                         return actions;
1308         return NULL;
1309 }
1310
1311 /*
1312  * Validate the flag action.
1313  *
1314  * @param[in] action_flags
1315  *   Bit-fields that holds the actions detected until now.
1316  * @param[in] attr
1317  *   Attributes of flow that includes this action.
1318  * @param[out] error
1319  *   Pointer to error structure.
1320  *
1321  * @return
1322  *   0 on success, a negative errno value otherwise and rte_errno is set.
1323  */
1324 int
1325 mlx5_flow_validate_action_flag(uint64_t action_flags,
1326                                const struct rte_flow_attr *attr,
1327                                struct rte_flow_error *error)
1328 {
1329         if (action_flags & MLX5_FLOW_ACTION_MARK)
1330                 return rte_flow_error_set(error, EINVAL,
1331                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1332                                           "can't mark and flag in same flow");
1333         if (action_flags & MLX5_FLOW_ACTION_FLAG)
1334                 return rte_flow_error_set(error, EINVAL,
1335                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1336                                           "can't have 2 flag"
1337                                           " actions in same flow");
1338         if (attr->egress)
1339                 return rte_flow_error_set(error, ENOTSUP,
1340                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1341                                           "flag action not supported for "
1342                                           "egress");
1343         return 0;
1344 }
1345
1346 /*
1347  * Validate the mark action.
1348  *
1349  * @param[in] action
1350  *   Pointer to the queue action.
1351  * @param[in] action_flags
1352  *   Bit-fields that holds the actions detected until now.
1353  * @param[in] attr
1354  *   Attributes of flow that includes this action.
1355  * @param[out] error
1356  *   Pointer to error structure.
1357  *
1358  * @return
1359  *   0 on success, a negative errno value otherwise and rte_errno is set.
1360  */
1361 int
1362 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
1363                                uint64_t action_flags,
1364                                const struct rte_flow_attr *attr,
1365                                struct rte_flow_error *error)
1366 {
1367         const struct rte_flow_action_mark *mark = action->conf;
1368
1369         if (!mark)
1370                 return rte_flow_error_set(error, EINVAL,
1371                                           RTE_FLOW_ERROR_TYPE_ACTION,
1372                                           action,
1373                                           "configuration cannot be null");
1374         if (mark->id >= MLX5_FLOW_MARK_MAX)
1375                 return rte_flow_error_set(error, EINVAL,
1376                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1377                                           &mark->id,
1378                                           "mark id must in 0 <= id < "
1379                                           RTE_STR(MLX5_FLOW_MARK_MAX));
1380         if (action_flags & MLX5_FLOW_ACTION_FLAG)
1381                 return rte_flow_error_set(error, EINVAL,
1382                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1383                                           "can't flag and mark in same flow");
1384         if (action_flags & MLX5_FLOW_ACTION_MARK)
1385                 return rte_flow_error_set(error, EINVAL,
1386                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1387                                           "can't have 2 mark actions in same"
1388                                           " flow");
1389         if (attr->egress)
1390                 return rte_flow_error_set(error, ENOTSUP,
1391                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1392                                           "mark action not supported for "
1393                                           "egress");
1394         return 0;
1395 }
1396
1397 /*
1398  * Validate the drop action.
1399  *
1400  * @param[in] action_flags
1401  *   Bit-fields that holds the actions detected until now.
1402  * @param[in] attr
1403  *   Attributes of flow that includes this action.
1404  * @param[out] error
1405  *   Pointer to error structure.
1406  *
1407  * @return
1408  *   0 on success, a negative errno value otherwise and rte_errno is set.
1409  */
1410 int
1411 mlx5_flow_validate_action_drop(uint64_t action_flags __rte_unused,
1412                                const struct rte_flow_attr *attr,
1413                                struct rte_flow_error *error)
1414 {
1415         if (attr->egress)
1416                 return rte_flow_error_set(error, ENOTSUP,
1417                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1418                                           "drop action not supported for "
1419                                           "egress");
1420         return 0;
1421 }
1422
1423 /*
1424  * Validate the queue action.
1425  *
1426  * @param[in] action
1427  *   Pointer to the queue action.
1428  * @param[in] action_flags
1429  *   Bit-fields that holds the actions detected until now.
1430  * @param[in] dev
1431  *   Pointer to the Ethernet device structure.
1432  * @param[in] attr
1433  *   Attributes of flow that includes this action.
1434  * @param[out] error
1435  *   Pointer to error structure.
1436  *
1437  * @return
1438  *   0 on success, a negative errno value otherwise and rte_errno is set.
1439  */
1440 int
1441 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
1442                                 uint64_t action_flags,
1443                                 struct rte_eth_dev *dev,
1444                                 const struct rte_flow_attr *attr,
1445                                 struct rte_flow_error *error)
1446 {
1447         struct mlx5_priv *priv = dev->data->dev_private;
1448         const struct rte_flow_action_queue *queue = action->conf;
1449
1450         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1451                 return rte_flow_error_set(error, EINVAL,
1452                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1453                                           "can't have 2 fate actions in"
1454                                           " same flow");
1455         if (!priv->rxqs_n)
1456                 return rte_flow_error_set(error, EINVAL,
1457                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1458                                           NULL, "No Rx queues configured");
1459         if (queue->index >= priv->rxqs_n)
1460                 return rte_flow_error_set(error, EINVAL,
1461                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1462                                           &queue->index,
1463                                           "queue index out of range");
1464         if (!(*priv->rxqs)[queue->index])
1465                 return rte_flow_error_set(error, EINVAL,
1466                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1467                                           &queue->index,
1468                                           "queue is not configured");
1469         if (attr->egress)
1470                 return rte_flow_error_set(error, ENOTSUP,
1471                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1472                                           "queue action not supported for "
1473                                           "egress");
1474         return 0;
1475 }
1476
1477 /*
1478  * Validate the rss action.
1479  *
1480  * @param[in] dev
1481  *   Pointer to the Ethernet device structure.
1482  * @param[in] action
1483  *   Pointer to the queue action.
1484  * @param[out] error
1485  *   Pointer to error structure.
1486  *
1487  * @return
1488  *   0 on success, a negative errno value otherwise and rte_errno is set.
1489  */
1490 int
1491 mlx5_validate_action_rss(struct rte_eth_dev *dev,
1492                          const struct rte_flow_action *action,
1493                          struct rte_flow_error *error)
1494 {
1495         struct mlx5_priv *priv = dev->data->dev_private;
1496         const struct rte_flow_action_rss *rss = action->conf;
1497         enum mlx5_rxq_type rxq_type = MLX5_RXQ_TYPE_UNDEFINED;
1498         unsigned int i;
1499
1500         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
1501             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
1502                 return rte_flow_error_set(error, ENOTSUP,
1503                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1504                                           &rss->func,
1505                                           "RSS hash function not supported");
1506 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1507         if (rss->level > 2)
1508 #else
1509         if (rss->level > 1)
1510 #endif
1511                 return rte_flow_error_set(error, ENOTSUP,
1512                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1513                                           &rss->level,
1514                                           "tunnel RSS is not supported");
1515         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
1516         if (rss->key_len == 0 && rss->key != NULL)
1517                 return rte_flow_error_set(error, ENOTSUP,
1518                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1519                                           &rss->key_len,
1520                                           "RSS hash key length 0");
1521         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
1522                 return rte_flow_error_set(error, ENOTSUP,
1523                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1524                                           &rss->key_len,
1525                                           "RSS hash key too small");
1526         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
1527                 return rte_flow_error_set(error, ENOTSUP,
1528                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1529                                           &rss->key_len,
1530                                           "RSS hash key too large");
1531         if (rss->queue_num > priv->config.ind_table_max_size)
1532                 return rte_flow_error_set(error, ENOTSUP,
1533                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1534                                           &rss->queue_num,
1535                                           "number of queues too large");
1536         if (rss->types & MLX5_RSS_HF_MASK)
1537                 return rte_flow_error_set(error, ENOTSUP,
1538                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1539                                           &rss->types,
1540                                           "some RSS protocols are not"
1541                                           " supported");
1542         if ((rss->types & (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY)) &&
1543             !(rss->types & ETH_RSS_IP))
1544                 return rte_flow_error_set(error, EINVAL,
1545                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1546                                           "L3 partial RSS requested but L3 RSS"
1547                                           " type not specified");
1548         if ((rss->types & (ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)) &&
1549             !(rss->types & (ETH_RSS_UDP | ETH_RSS_TCP)))
1550                 return rte_flow_error_set(error, EINVAL,
1551                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1552                                           "L4 partial RSS requested but L4 RSS"
1553                                           " type not specified");
1554         if (!priv->rxqs_n)
1555                 return rte_flow_error_set(error, EINVAL,
1556                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1557                                           NULL, "No Rx queues configured");
1558         if (!rss->queue_num)
1559                 return rte_flow_error_set(error, EINVAL,
1560                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1561                                           NULL, "No queues configured");
1562         for (i = 0; i != rss->queue_num; ++i) {
1563                 struct mlx5_rxq_ctrl *rxq_ctrl;
1564
1565                 if (rss->queue[i] >= priv->rxqs_n)
1566                         return rte_flow_error_set
1567                                 (error, EINVAL,
1568                                  RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1569                                  &rss->queue[i], "queue index out of range");
1570                 if (!(*priv->rxqs)[rss->queue[i]])
1571                         return rte_flow_error_set
1572                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1573                                  &rss->queue[i], "queue is not configured");
1574                 rxq_ctrl = container_of((*priv->rxqs)[rss->queue[i]],
1575                                         struct mlx5_rxq_ctrl, rxq);
1576                 if (i == 0)
1577                         rxq_type = rxq_ctrl->type;
1578                 if (rxq_type != rxq_ctrl->type)
1579                         return rte_flow_error_set
1580                                 (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1581                                  &rss->queue[i],
1582                                  "combining hairpin and regular RSS queues is not supported");
1583         }
1584         return 0;
1585 }
1586
1587 /*
1588  * Validate the rss action.
1589  *
1590  * @param[in] action
1591  *   Pointer to the queue action.
1592  * @param[in] action_flags
1593  *   Bit-fields that holds the actions detected until now.
1594  * @param[in] dev
1595  *   Pointer to the Ethernet device structure.
1596  * @param[in] attr
1597  *   Attributes of flow that includes this action.
1598  * @param[in] item_flags
1599  *   Items that were detected.
1600  * @param[out] error
1601  *   Pointer to error structure.
1602  *
1603  * @return
1604  *   0 on success, a negative errno value otherwise and rte_errno is set.
1605  */
1606 int
1607 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
1608                               uint64_t action_flags,
1609                               struct rte_eth_dev *dev,
1610                               const struct rte_flow_attr *attr,
1611                               uint64_t item_flags,
1612                               struct rte_flow_error *error)
1613 {
1614         const struct rte_flow_action_rss *rss = action->conf;
1615         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1616         int ret;
1617
1618         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1619                 return rte_flow_error_set(error, EINVAL,
1620                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1621                                           "can't have 2 fate actions"
1622                                           " in same flow");
1623         ret = mlx5_validate_action_rss(dev, action, error);
1624         if (ret)
1625                 return ret;
1626         if (attr->egress)
1627                 return rte_flow_error_set(error, ENOTSUP,
1628                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1629                                           "rss action not supported for "
1630                                           "egress");
1631         if (rss->level > 1 && !tunnel)
1632                 return rte_flow_error_set(error, EINVAL,
1633                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1634                                           "inner RSS is not supported for "
1635                                           "non-tunnel flows");
1636         if ((item_flags & MLX5_FLOW_LAYER_ECPRI) &&
1637             !(item_flags & MLX5_FLOW_LAYER_INNER_L4_UDP)) {
1638                 return rte_flow_error_set(error, EINVAL,
1639                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1640                                           "RSS on eCPRI is not supported now");
1641         }
1642         return 0;
1643 }
1644
1645 /*
1646  * Validate the default miss action.
1647  *
1648  * @param[in] action_flags
1649  *   Bit-fields that holds the actions detected until now.
1650  * @param[out] error
1651  *   Pointer to error structure.
1652  *
1653  * @return
1654  *   0 on success, a negative errno value otherwise and rte_errno is set.
1655  */
1656 int
1657 mlx5_flow_validate_action_default_miss(uint64_t action_flags,
1658                                 const struct rte_flow_attr *attr,
1659                                 struct rte_flow_error *error)
1660 {
1661         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1662                 return rte_flow_error_set(error, EINVAL,
1663                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1664                                           "can't have 2 fate actions in"
1665                                           " same flow");
1666         if (attr->egress)
1667                 return rte_flow_error_set(error, ENOTSUP,
1668                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1669                                           "default miss action not supported "
1670                                           "for egress");
1671         if (attr->group)
1672                 return rte_flow_error_set(error, ENOTSUP,
1673                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP, NULL,
1674                                           "only group 0 is supported");
1675         if (attr->transfer)
1676                 return rte_flow_error_set(error, ENOTSUP,
1677                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1678                                           NULL, "transfer is not supported");
1679         return 0;
1680 }
1681
1682 /*
1683  * Validate the count action.
1684  *
1685  * @param[in] dev
1686  *   Pointer to the Ethernet device structure.
1687  * @param[in] attr
1688  *   Attributes of flow that includes this action.
1689  * @param[out] error
1690  *   Pointer to error structure.
1691  *
1692  * @return
1693  *   0 on success, a negative errno value otherwise and rte_errno is set.
1694  */
1695 int
1696 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
1697                                 const struct rte_flow_attr *attr,
1698                                 struct rte_flow_error *error)
1699 {
1700         if (attr->egress)
1701                 return rte_flow_error_set(error, ENOTSUP,
1702                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1703                                           "count action not supported for "
1704                                           "egress");
1705         return 0;
1706 }
1707
1708 /*
1709  * Validate the ASO CT action.
1710  *
1711  * @param[in] dev
1712  *   Pointer to the Ethernet device structure.
1713  * @param[in] conntrack
1714  *   Pointer to the CT action profile.
1715  * @param[out] error
1716  *   Pointer to error structure.
1717  *
1718  * @return
1719  *   0 on success, a negative errno value otherwise and rte_errno is set.
1720  */
1721 int
1722 mlx5_validate_action_ct(struct rte_eth_dev *dev,
1723                         const struct rte_flow_action_conntrack *conntrack,
1724                         struct rte_flow_error *error)
1725 {
1726         RTE_SET_USED(dev);
1727
1728         if (conntrack->state > RTE_FLOW_CONNTRACK_STATE_TIME_WAIT)
1729                 return rte_flow_error_set(error, EINVAL,
1730                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1731                                           "Invalid CT state");
1732         if (conntrack->last_index > RTE_FLOW_CONNTRACK_FLAG_RST)
1733                 return rte_flow_error_set(error, EINVAL,
1734                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1735                                           "Invalid last TCP packet flag");
1736         return 0;
1737 }
1738
1739 /**
1740  * Verify the @p attributes will be correctly understood by the NIC and store
1741  * them in the @p flow if everything is correct.
1742  *
1743  * @param[in] dev
1744  *   Pointer to the Ethernet device structure.
1745  * @param[in] attributes
1746  *   Pointer to flow attributes
1747  * @param[out] error
1748  *   Pointer to error structure.
1749  *
1750  * @return
1751  *   0 on success, a negative errno value otherwise and rte_errno is set.
1752  */
1753 int
1754 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1755                               const struct rte_flow_attr *attributes,
1756                               struct rte_flow_error *error)
1757 {
1758         struct mlx5_priv *priv = dev->data->dev_private;
1759         uint32_t priority_max = priv->config.flow_prio - 1;
1760
1761         if (attributes->group)
1762                 return rte_flow_error_set(error, ENOTSUP,
1763                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1764                                           NULL, "groups is not supported");
1765         if (attributes->priority != MLX5_FLOW_LOWEST_PRIO_INDICATOR &&
1766             attributes->priority >= priority_max)
1767                 return rte_flow_error_set(error, ENOTSUP,
1768                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1769                                           NULL, "priority out of range");
1770         if (attributes->egress)
1771                 return rte_flow_error_set(error, ENOTSUP,
1772                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1773                                           "egress is not supported");
1774         if (attributes->transfer && !priv->config.dv_esw_en)
1775                 return rte_flow_error_set(error, ENOTSUP,
1776                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1777                                           NULL, "transfer is not supported");
1778         if (!attributes->ingress)
1779                 return rte_flow_error_set(error, EINVAL,
1780                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1781                                           NULL,
1782                                           "ingress attribute is mandatory");
1783         return 0;
1784 }
1785
1786 /**
1787  * Validate ICMP6 item.
1788  *
1789  * @param[in] item
1790  *   Item specification.
1791  * @param[in] item_flags
1792  *   Bit-fields that holds the items detected until now.
1793  * @param[in] ext_vlan_sup
1794  *   Whether extended VLAN features are supported or not.
1795  * @param[out] error
1796  *   Pointer to error structure.
1797  *
1798  * @return
1799  *   0 on success, a negative errno value otherwise and rte_errno is set.
1800  */
1801 int
1802 mlx5_flow_validate_item_icmp6(const struct rte_flow_item *item,
1803                                uint64_t item_flags,
1804                                uint8_t target_protocol,
1805                                struct rte_flow_error *error)
1806 {
1807         const struct rte_flow_item_icmp6 *mask = item->mask;
1808         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1809         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
1810                                       MLX5_FLOW_LAYER_OUTER_L3_IPV6;
1811         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1812                                       MLX5_FLOW_LAYER_OUTER_L4;
1813         int ret;
1814
1815         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMPV6)
1816                 return rte_flow_error_set(error, EINVAL,
1817                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1818                                           "protocol filtering not compatible"
1819                                           " with ICMP6 layer");
1820         if (!(item_flags & l3m))
1821                 return rte_flow_error_set(error, EINVAL,
1822                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1823                                           "IPv6 is mandatory to filter on"
1824                                           " ICMP6");
1825         if (item_flags & l4m)
1826                 return rte_flow_error_set(error, EINVAL,
1827                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1828                                           "multiple L4 layers not supported");
1829         if (!mask)
1830                 mask = &rte_flow_item_icmp6_mask;
1831         ret = mlx5_flow_item_acceptable
1832                 (item, (const uint8_t *)mask,
1833                  (const uint8_t *)&rte_flow_item_icmp6_mask,
1834                  sizeof(struct rte_flow_item_icmp6),
1835                  MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
1836         if (ret < 0)
1837                 return ret;
1838         return 0;
1839 }
1840
1841 /**
1842  * Validate ICMP item.
1843  *
1844  * @param[in] item
1845  *   Item specification.
1846  * @param[in] item_flags
1847  *   Bit-fields that holds the items detected until now.
1848  * @param[out] error
1849  *   Pointer to error structure.
1850  *
1851  * @return
1852  *   0 on success, a negative errno value otherwise and rte_errno is set.
1853  */
1854 int
1855 mlx5_flow_validate_item_icmp(const struct rte_flow_item *item,
1856                              uint64_t item_flags,
1857                              uint8_t target_protocol,
1858                              struct rte_flow_error *error)
1859 {
1860         const struct rte_flow_item_icmp *mask = item->mask;
1861         const struct rte_flow_item_icmp nic_mask = {
1862                 .hdr.icmp_type = 0xff,
1863                 .hdr.icmp_code = 0xff,
1864                 .hdr.icmp_ident = RTE_BE16(0xffff),
1865                 .hdr.icmp_seq_nb = RTE_BE16(0xffff),
1866         };
1867         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1868         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
1869                                       MLX5_FLOW_LAYER_OUTER_L3_IPV4;
1870         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1871                                       MLX5_FLOW_LAYER_OUTER_L4;
1872         int ret;
1873
1874         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMP)
1875                 return rte_flow_error_set(error, EINVAL,
1876                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1877                                           "protocol filtering not compatible"
1878                                           " with ICMP layer");
1879         if (!(item_flags & l3m))
1880                 return rte_flow_error_set(error, EINVAL,
1881                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1882                                           "IPv4 is mandatory to filter"
1883                                           " on ICMP");
1884         if (item_flags & l4m)
1885                 return rte_flow_error_set(error, EINVAL,
1886                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1887                                           "multiple L4 layers not supported");
1888         if (!mask)
1889                 mask = &nic_mask;
1890         ret = mlx5_flow_item_acceptable
1891                 (item, (const uint8_t *)mask,
1892                  (const uint8_t *)&nic_mask,
1893                  sizeof(struct rte_flow_item_icmp),
1894                  MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
1895         if (ret < 0)
1896                 return ret;
1897         return 0;
1898 }
1899
1900 /**
1901  * Validate Ethernet item.
1902  *
1903  * @param[in] item
1904  *   Item specification.
1905  * @param[in] item_flags
1906  *   Bit-fields that holds the items detected until now.
1907  * @param[out] error
1908  *   Pointer to error structure.
1909  *
1910  * @return
1911  *   0 on success, a negative errno value otherwise and rte_errno is set.
1912  */
1913 int
1914 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1915                             uint64_t item_flags, bool ext_vlan_sup,
1916                             struct rte_flow_error *error)
1917 {
1918         const struct rte_flow_item_eth *mask = item->mask;
1919         const struct rte_flow_item_eth nic_mask = {
1920                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1921                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1922                 .type = RTE_BE16(0xffff),
1923                 .has_vlan = ext_vlan_sup ? 1 : 0,
1924         };
1925         int ret;
1926         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1927         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1928                                        MLX5_FLOW_LAYER_OUTER_L2;
1929
1930         if (item_flags & ethm)
1931                 return rte_flow_error_set(error, ENOTSUP,
1932                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1933                                           "multiple L2 layers not supported");
1934         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_L3)) ||
1935             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_L3)))
1936                 return rte_flow_error_set(error, EINVAL,
1937                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1938                                           "L2 layer should not follow "
1939                                           "L3 layers");
1940         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN)) ||
1941             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_VLAN)))
1942                 return rte_flow_error_set(error, EINVAL,
1943                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1944                                           "L2 layer should not follow VLAN");
1945         if (!mask)
1946                 mask = &rte_flow_item_eth_mask;
1947         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1948                                         (const uint8_t *)&nic_mask,
1949                                         sizeof(struct rte_flow_item_eth),
1950                                         MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
1951         return ret;
1952 }
1953
1954 /**
1955  * Validate VLAN item.
1956  *
1957  * @param[in] item
1958  *   Item specification.
1959  * @param[in] item_flags
1960  *   Bit-fields that holds the items detected until now.
1961  * @param[in] dev
1962  *   Ethernet device flow is being created on.
1963  * @param[out] error
1964  *   Pointer to error structure.
1965  *
1966  * @return
1967  *   0 on success, a negative errno value otherwise and rte_errno is set.
1968  */
1969 int
1970 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1971                              uint64_t item_flags,
1972                              struct rte_eth_dev *dev,
1973                              struct rte_flow_error *error)
1974 {
1975         const struct rte_flow_item_vlan *spec = item->spec;
1976         const struct rte_flow_item_vlan *mask = item->mask;
1977         const struct rte_flow_item_vlan nic_mask = {
1978                 .tci = RTE_BE16(UINT16_MAX),
1979                 .inner_type = RTE_BE16(UINT16_MAX),
1980         };
1981         uint16_t vlan_tag = 0;
1982         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1983         int ret;
1984         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1985                                         MLX5_FLOW_LAYER_INNER_L4) :
1986                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1987                                         MLX5_FLOW_LAYER_OUTER_L4);
1988         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1989                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1990
1991         if (item_flags & vlanm)
1992                 return rte_flow_error_set(error, EINVAL,
1993                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1994                                           "multiple VLAN layers not supported");
1995         else if ((item_flags & l34m) != 0)
1996                 return rte_flow_error_set(error, EINVAL,
1997                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1998                                           "VLAN cannot follow L3/L4 layer");
1999         if (!mask)
2000                 mask = &rte_flow_item_vlan_mask;
2001         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
2002                                         (const uint8_t *)&nic_mask,
2003                                         sizeof(struct rte_flow_item_vlan),
2004                                         MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
2005         if (ret)
2006                 return ret;
2007         if (!tunnel && mask->tci != RTE_BE16(0x0fff)) {
2008                 struct mlx5_priv *priv = dev->data->dev_private;
2009
2010                 if (priv->vmwa_context) {
2011                         /*
2012                          * Non-NULL context means we have a virtual machine
2013                          * and SR-IOV enabled, we have to create VLAN interface
2014                          * to make hypervisor to setup E-Switch vport
2015                          * context correctly. We avoid creating the multiple
2016                          * VLAN interfaces, so we cannot support VLAN tag mask.
2017                          */
2018                         return rte_flow_error_set(error, EINVAL,
2019                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2020                                                   item,
2021                                                   "VLAN tag mask is not"
2022                                                   " supported in virtual"
2023                                                   " environment");
2024                 }
2025         }
2026         if (spec) {
2027                 vlan_tag = spec->tci;
2028                 vlan_tag &= mask->tci;
2029         }
2030         /*
2031          * From verbs perspective an empty VLAN is equivalent
2032          * to a packet without VLAN layer.
2033          */
2034         if (!vlan_tag)
2035                 return rte_flow_error_set(error, EINVAL,
2036                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
2037                                           item->spec,
2038                                           "VLAN cannot be empty");
2039         return 0;
2040 }
2041
2042 /**
2043  * Validate IPV4 item.
2044  *
2045  * @param[in] item
2046  *   Item specification.
2047  * @param[in] item_flags
2048  *   Bit-fields that holds the items detected until now.
2049  * @param[in] last_item
2050  *   Previous validated item in the pattern items.
2051  * @param[in] ether_type
2052  *   Type in the ethernet layer header (including dot1q).
2053  * @param[in] acc_mask
2054  *   Acceptable mask, if NULL default internal default mask
2055  *   will be used to check whether item fields are supported.
2056  * @param[in] range_accepted
2057  *   True if range of values is accepted for specific fields, false otherwise.
2058  * @param[out] error
2059  *   Pointer to error structure.
2060  *
2061  * @return
2062  *   0 on success, a negative errno value otherwise and rte_errno is set.
2063  */
2064 int
2065 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
2066                              uint64_t item_flags,
2067                              uint64_t last_item,
2068                              uint16_t ether_type,
2069                              const struct rte_flow_item_ipv4 *acc_mask,
2070                              bool range_accepted,
2071                              struct rte_flow_error *error)
2072 {
2073         const struct rte_flow_item_ipv4 *mask = item->mask;
2074         const struct rte_flow_item_ipv4 *spec = item->spec;
2075         const struct rte_flow_item_ipv4 nic_mask = {
2076                 .hdr = {
2077                         .src_addr = RTE_BE32(0xffffffff),
2078                         .dst_addr = RTE_BE32(0xffffffff),
2079                         .type_of_service = 0xff,
2080                         .next_proto_id = 0xff,
2081                 },
2082         };
2083         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
2084         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
2085                                       MLX5_FLOW_LAYER_OUTER_L3;
2086         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
2087                                       MLX5_FLOW_LAYER_OUTER_L4;
2088         int ret;
2089         uint8_t next_proto = 0xFF;
2090         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
2091                                   MLX5_FLOW_LAYER_OUTER_VLAN |
2092                                   MLX5_FLOW_LAYER_INNER_VLAN);
2093
2094         if ((last_item & l2_vlan) && ether_type &&
2095             ether_type != RTE_ETHER_TYPE_IPV4)
2096                 return rte_flow_error_set(error, EINVAL,
2097                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2098                                           "IPv4 cannot follow L2/VLAN layer "
2099                                           "which ether type is not IPv4");
2100         if (item_flags & MLX5_FLOW_LAYER_IPIP) {
2101                 if (mask && spec)
2102                         next_proto = mask->hdr.next_proto_id &
2103                                      spec->hdr.next_proto_id;
2104                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
2105                         return rte_flow_error_set(error, EINVAL,
2106                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2107                                                   item,
2108                                                   "multiple tunnel "
2109                                                   "not supported");
2110         }
2111         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP)
2112                 return rte_flow_error_set(error, EINVAL,
2113                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2114                                           "wrong tunnel type - IPv6 specified "
2115                                           "but IPv4 item provided");
2116         if (item_flags & l3m)
2117                 return rte_flow_error_set(error, ENOTSUP,
2118                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2119                                           "multiple L3 layers not supported");
2120         else if (item_flags & l4m)
2121                 return rte_flow_error_set(error, EINVAL,
2122                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2123                                           "L3 cannot follow an L4 layer.");
2124         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
2125                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
2126                 return rte_flow_error_set(error, EINVAL,
2127                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2128                                           "L3 cannot follow an NVGRE layer.");
2129         if (!mask)
2130                 mask = &rte_flow_item_ipv4_mask;
2131         else if (mask->hdr.next_proto_id != 0 &&
2132                  mask->hdr.next_proto_id != 0xff)
2133                 return rte_flow_error_set(error, EINVAL,
2134                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
2135                                           "partial mask is not supported"
2136                                           " for protocol");
2137         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
2138                                         acc_mask ? (const uint8_t *)acc_mask
2139                                                  : (const uint8_t *)&nic_mask,
2140                                         sizeof(struct rte_flow_item_ipv4),
2141                                         range_accepted, error);
2142         if (ret < 0)
2143                 return ret;
2144         return 0;
2145 }
2146
2147 /**
2148  * Validate IPV6 item.
2149  *
2150  * @param[in] item
2151  *   Item specification.
2152  * @param[in] item_flags
2153  *   Bit-fields that holds the items detected until now.
2154  * @param[in] last_item
2155  *   Previous validated item in the pattern items.
2156  * @param[in] ether_type
2157  *   Type in the ethernet layer header (including dot1q).
2158  * @param[in] acc_mask
2159  *   Acceptable mask, if NULL default internal default mask
2160  *   will be used to check whether item fields are supported.
2161  * @param[out] error
2162  *   Pointer to error structure.
2163  *
2164  * @return
2165  *   0 on success, a negative errno value otherwise and rte_errno is set.
2166  */
2167 int
2168 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
2169                              uint64_t item_flags,
2170                              uint64_t last_item,
2171                              uint16_t ether_type,
2172                              const struct rte_flow_item_ipv6 *acc_mask,
2173                              struct rte_flow_error *error)
2174 {
2175         const struct rte_flow_item_ipv6 *mask = item->mask;
2176         const struct rte_flow_item_ipv6 *spec = item->spec;
2177         const struct rte_flow_item_ipv6 nic_mask = {
2178                 .hdr = {
2179                         .src_addr =
2180                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
2181                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
2182                         .dst_addr =
2183                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
2184                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
2185                         .vtc_flow = RTE_BE32(0xffffffff),
2186                         .proto = 0xff,
2187                 },
2188         };
2189         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
2190         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
2191                                       MLX5_FLOW_LAYER_OUTER_L3;
2192         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
2193                                       MLX5_FLOW_LAYER_OUTER_L4;
2194         int ret;
2195         uint8_t next_proto = 0xFF;
2196         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
2197                                   MLX5_FLOW_LAYER_OUTER_VLAN |
2198                                   MLX5_FLOW_LAYER_INNER_VLAN);
2199
2200         if ((last_item & l2_vlan) && ether_type &&
2201             ether_type != RTE_ETHER_TYPE_IPV6)
2202                 return rte_flow_error_set(error, EINVAL,
2203                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2204                                           "IPv6 cannot follow L2/VLAN layer "
2205                                           "which ether type is not IPv6");
2206         if (mask && mask->hdr.proto == UINT8_MAX && spec)
2207                 next_proto = spec->hdr.proto;
2208         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
2209                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
2210                         return rte_flow_error_set(error, EINVAL,
2211                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2212                                                   item,
2213                                                   "multiple tunnel "
2214                                                   "not supported");
2215         }
2216         if (next_proto == IPPROTO_HOPOPTS  ||
2217             next_proto == IPPROTO_ROUTING  ||
2218             next_proto == IPPROTO_FRAGMENT ||
2219             next_proto == IPPROTO_ESP      ||
2220             next_proto == IPPROTO_AH       ||
2221             next_proto == IPPROTO_DSTOPTS)
2222                 return rte_flow_error_set(error, EINVAL,
2223                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2224                                           "IPv6 proto (next header) should "
2225                                           "not be set as extension header");
2226         if (item_flags & MLX5_FLOW_LAYER_IPIP)
2227                 return rte_flow_error_set(error, EINVAL,
2228                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2229                                           "wrong tunnel type - IPv4 specified "
2230                                           "but IPv6 item provided");
2231         if (item_flags & l3m)
2232                 return rte_flow_error_set(error, ENOTSUP,
2233                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2234                                           "multiple L3 layers not supported");
2235         else if (item_flags & l4m)
2236                 return rte_flow_error_set(error, EINVAL,
2237                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2238                                           "L3 cannot follow an L4 layer.");
2239         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
2240                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
2241                 return rte_flow_error_set(error, EINVAL,
2242                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2243                                           "L3 cannot follow an NVGRE layer.");
2244         if (!mask)
2245                 mask = &rte_flow_item_ipv6_mask;
2246         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
2247                                         acc_mask ? (const uint8_t *)acc_mask
2248                                                  : (const uint8_t *)&nic_mask,
2249                                         sizeof(struct rte_flow_item_ipv6),
2250                                         MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
2251         if (ret < 0)
2252                 return ret;
2253         return 0;
2254 }
2255
2256 /**
2257  * Validate UDP item.
2258  *
2259  * @param[in] item
2260  *   Item specification.
2261  * @param[in] item_flags
2262  *   Bit-fields that holds the items detected until now.
2263  * @param[in] target_protocol
2264  *   The next protocol in the previous item.
2265  * @param[in] flow_mask
2266  *   mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
2267  * @param[out] error
2268  *   Pointer to error structure.
2269  *
2270  * @return
2271  *   0 on success, a negative errno value otherwise and rte_errno is set.
2272  */
2273 int
2274 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
2275                             uint64_t item_flags,
2276                             uint8_t target_protocol,
2277                             struct rte_flow_error *error)
2278 {
2279         const struct rte_flow_item_udp *mask = item->mask;
2280         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
2281         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
2282                                       MLX5_FLOW_LAYER_OUTER_L3;
2283         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
2284                                       MLX5_FLOW_LAYER_OUTER_L4;
2285         int ret;
2286
2287         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
2288                 return rte_flow_error_set(error, EINVAL,
2289                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2290                                           "protocol filtering not compatible"
2291                                           " with UDP layer");
2292         if (!(item_flags & l3m))
2293                 return rte_flow_error_set(error, EINVAL,
2294                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2295                                           "L3 is mandatory to filter on L4");
2296         if (item_flags & l4m)
2297                 return rte_flow_error_set(error, EINVAL,
2298                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2299                                           "multiple L4 layers not supported");
2300         if (!mask)
2301                 mask = &rte_flow_item_udp_mask;
2302         ret = mlx5_flow_item_acceptable
2303                 (item, (const uint8_t *)mask,
2304                  (const uint8_t *)&rte_flow_item_udp_mask,
2305                  sizeof(struct rte_flow_item_udp), MLX5_ITEM_RANGE_NOT_ACCEPTED,
2306                  error);
2307         if (ret < 0)
2308                 return ret;
2309         return 0;
2310 }
2311
2312 /**
2313  * Validate TCP item.
2314  *
2315  * @param[in] item
2316  *   Item specification.
2317  * @param[in] item_flags
2318  *   Bit-fields that holds the items detected until now.
2319  * @param[in] target_protocol
2320  *   The next protocol in the previous item.
2321  * @param[out] error
2322  *   Pointer to error structure.
2323  *
2324  * @return
2325  *   0 on success, a negative errno value otherwise and rte_errno is set.
2326  */
2327 int
2328 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
2329                             uint64_t item_flags,
2330                             uint8_t target_protocol,
2331                             const struct rte_flow_item_tcp *flow_mask,
2332                             struct rte_flow_error *error)
2333 {
2334         const struct rte_flow_item_tcp *mask = item->mask;
2335         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
2336         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
2337                                       MLX5_FLOW_LAYER_OUTER_L3;
2338         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
2339                                       MLX5_FLOW_LAYER_OUTER_L4;
2340         int ret;
2341
2342         MLX5_ASSERT(flow_mask);
2343         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
2344                 return rte_flow_error_set(error, EINVAL,
2345                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2346                                           "protocol filtering not compatible"
2347                                           " with TCP layer");
2348         if (!(item_flags & l3m))
2349                 return rte_flow_error_set(error, EINVAL,
2350                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2351                                           "L3 is mandatory to filter on L4");
2352         if (item_flags & l4m)
2353                 return rte_flow_error_set(error, EINVAL,
2354                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2355                                           "multiple L4 layers not supported");
2356         if (!mask)
2357                 mask = &rte_flow_item_tcp_mask;
2358         ret = mlx5_flow_item_acceptable
2359                 (item, (const uint8_t *)mask,
2360                  (const uint8_t *)flow_mask,
2361                  sizeof(struct rte_flow_item_tcp), MLX5_ITEM_RANGE_NOT_ACCEPTED,
2362                  error);
2363         if (ret < 0)
2364                 return ret;
2365         return 0;
2366 }
2367
2368 /**
2369  * Validate VXLAN item.
2370  *
2371  * @param[in] item
2372  *   Item specification.
2373  * @param[in] item_flags
2374  *   Bit-fields that holds the items detected until now.
2375  * @param[in] target_protocol
2376  *   The next protocol in the previous item.
2377  * @param[out] error
2378  *   Pointer to error structure.
2379  *
2380  * @return
2381  *   0 on success, a negative errno value otherwise and rte_errno is set.
2382  */
2383 int
2384 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
2385                               uint64_t item_flags,
2386                               struct rte_flow_error *error)
2387 {
2388         const struct rte_flow_item_vxlan *spec = item->spec;
2389         const struct rte_flow_item_vxlan *mask = item->mask;
2390         int ret;
2391         union vni {
2392                 uint32_t vlan_id;
2393                 uint8_t vni[4];
2394         } id = { .vlan_id = 0, };
2395
2396
2397         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2398                 return rte_flow_error_set(error, ENOTSUP,
2399                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2400                                           "multiple tunnel layers not"
2401                                           " supported");
2402         /*
2403          * Verify only UDPv4 is present as defined in
2404          * https://tools.ietf.org/html/rfc7348
2405          */
2406         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2407                 return rte_flow_error_set(error, EINVAL,
2408                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2409                                           "no outer UDP layer found");
2410         if (!mask)
2411                 mask = &rte_flow_item_vxlan_mask;
2412         ret = mlx5_flow_item_acceptable
2413                 (item, (const uint8_t *)mask,
2414                  (const uint8_t *)&rte_flow_item_vxlan_mask,
2415                  sizeof(struct rte_flow_item_vxlan),
2416                  MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
2417         if (ret < 0)
2418                 return ret;
2419         if (spec) {
2420                 memcpy(&id.vni[1], spec->vni, 3);
2421                 memcpy(&id.vni[1], mask->vni, 3);
2422         }
2423         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2424                 return rte_flow_error_set(error, ENOTSUP,
2425                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2426                                           "VXLAN tunnel must be fully defined");
2427         return 0;
2428 }
2429
2430 /**
2431  * Validate VXLAN_GPE item.
2432  *
2433  * @param[in] item
2434  *   Item specification.
2435  * @param[in] item_flags
2436  *   Bit-fields that holds the items detected until now.
2437  * @param[in] priv
2438  *   Pointer to the private data structure.
2439  * @param[in] target_protocol
2440  *   The next protocol in the previous item.
2441  * @param[out] error
2442  *   Pointer to error structure.
2443  *
2444  * @return
2445  *   0 on success, a negative errno value otherwise and rte_errno is set.
2446  */
2447 int
2448 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
2449                                   uint64_t item_flags,
2450                                   struct rte_eth_dev *dev,
2451                                   struct rte_flow_error *error)
2452 {
2453         struct mlx5_priv *priv = dev->data->dev_private;
2454         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
2455         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
2456         int ret;
2457         union vni {
2458                 uint32_t vlan_id;
2459                 uint8_t vni[4];
2460         } id = { .vlan_id = 0, };
2461
2462         if (!priv->config.l3_vxlan_en)
2463                 return rte_flow_error_set(error, ENOTSUP,
2464                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2465                                           "L3 VXLAN is not enabled by device"
2466                                           " parameter and/or not configured in"
2467                                           " firmware");
2468         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2469                 return rte_flow_error_set(error, ENOTSUP,
2470                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2471                                           "multiple tunnel layers not"
2472                                           " supported");
2473         /*
2474          * Verify only UDPv4 is present as defined in
2475          * https://tools.ietf.org/html/rfc7348
2476          */
2477         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2478                 return rte_flow_error_set(error, EINVAL,
2479                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2480                                           "no outer UDP layer found");
2481         if (!mask)
2482                 mask = &rte_flow_item_vxlan_gpe_mask;
2483         ret = mlx5_flow_item_acceptable
2484                 (item, (const uint8_t *)mask,
2485                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
2486                  sizeof(struct rte_flow_item_vxlan_gpe),
2487                  MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
2488         if (ret < 0)
2489                 return ret;
2490         if (spec) {
2491                 if (spec->protocol)
2492                         return rte_flow_error_set(error, ENOTSUP,
2493                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2494                                                   item,
2495                                                   "VxLAN-GPE protocol"
2496                                                   " not supported");
2497                 memcpy(&id.vni[1], spec->vni, 3);
2498                 memcpy(&id.vni[1], mask->vni, 3);
2499         }
2500         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2501                 return rte_flow_error_set(error, ENOTSUP,
2502                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2503                                           "VXLAN-GPE tunnel must be fully"
2504                                           " defined");
2505         return 0;
2506 }
2507 /**
2508  * Validate GRE Key item.
2509  *
2510  * @param[in] item
2511  *   Item specification.
2512  * @param[in] item_flags
2513  *   Bit flags to mark detected items.
2514  * @param[in] gre_item
2515  *   Pointer to gre_item
2516  * @param[out] error
2517  *   Pointer to error structure.
2518  *
2519  * @return
2520  *   0 on success, a negative errno value otherwise and rte_errno is set.
2521  */
2522 int
2523 mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
2524                                 uint64_t item_flags,
2525                                 const struct rte_flow_item *gre_item,
2526                                 struct rte_flow_error *error)
2527 {
2528         const rte_be32_t *mask = item->mask;
2529         int ret = 0;
2530         rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
2531         const struct rte_flow_item_gre *gre_spec;
2532         const struct rte_flow_item_gre *gre_mask;
2533
2534         if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
2535                 return rte_flow_error_set(error, ENOTSUP,
2536                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2537                                           "Multiple GRE key not support");
2538         if (!(item_flags & MLX5_FLOW_LAYER_GRE))
2539                 return rte_flow_error_set(error, ENOTSUP,
2540                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2541                                           "No preceding GRE header");
2542         if (item_flags & MLX5_FLOW_LAYER_INNER)
2543                 return rte_flow_error_set(error, ENOTSUP,
2544                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2545                                           "GRE key following a wrong item");
2546         gre_mask = gre_item->mask;
2547         if (!gre_mask)
2548                 gre_mask = &rte_flow_item_gre_mask;
2549         gre_spec = gre_item->spec;
2550         if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
2551                          !(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
2552                 return rte_flow_error_set(error, EINVAL,
2553                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2554                                           "Key bit must be on");
2555
2556         if (!mask)
2557                 mask = &gre_key_default_mask;
2558         ret = mlx5_flow_item_acceptable
2559                 (item, (const uint8_t *)mask,
2560                  (const uint8_t *)&gre_key_default_mask,
2561                  sizeof(rte_be32_t), MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
2562         return ret;
2563 }
2564
2565 /**
2566  * Validate GRE item.
2567  *
2568  * @param[in] item
2569  *   Item specification.
2570  * @param[in] item_flags
2571  *   Bit flags to mark detected items.
2572  * @param[in] target_protocol
2573  *   The next protocol in the previous item.
2574  * @param[out] error
2575  *   Pointer to error structure.
2576  *
2577  * @return
2578  *   0 on success, a negative errno value otherwise and rte_errno is set.
2579  */
2580 int
2581 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
2582                             uint64_t item_flags,
2583                             uint8_t target_protocol,
2584                             struct rte_flow_error *error)
2585 {
2586         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
2587         const struct rte_flow_item_gre *mask = item->mask;
2588         int ret;
2589         const struct rte_flow_item_gre nic_mask = {
2590                 .c_rsvd0_ver = RTE_BE16(0xB000),
2591                 .protocol = RTE_BE16(UINT16_MAX),
2592         };
2593
2594         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2595                 return rte_flow_error_set(error, EINVAL,
2596                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2597                                           "protocol filtering not compatible"
2598                                           " with this GRE layer");
2599         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2600                 return rte_flow_error_set(error, ENOTSUP,
2601                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2602                                           "multiple tunnel layers not"
2603                                           " supported");
2604         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2605                 return rte_flow_error_set(error, ENOTSUP,
2606                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2607                                           "L3 Layer is missing");
2608         if (!mask)
2609                 mask = &rte_flow_item_gre_mask;
2610         ret = mlx5_flow_item_acceptable
2611                 (item, (const uint8_t *)mask,
2612                  (const uint8_t *)&nic_mask,
2613                  sizeof(struct rte_flow_item_gre), MLX5_ITEM_RANGE_NOT_ACCEPTED,
2614                  error);
2615         if (ret < 0)
2616                 return ret;
2617 #ifndef HAVE_MLX5DV_DR
2618 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2619         if (spec && (spec->protocol & mask->protocol))
2620                 return rte_flow_error_set(error, ENOTSUP,
2621                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2622                                           "without MPLS support the"
2623                                           " specification cannot be used for"
2624                                           " filtering");
2625 #endif
2626 #endif
2627         return 0;
2628 }
2629
2630 /**
2631  * Validate Geneve item.
2632  *
2633  * @param[in] item
2634  *   Item specification.
2635  * @param[in] itemFlags
2636  *   Bit-fields that holds the items detected until now.
2637  * @param[in] enPriv
2638  *   Pointer to the private data structure.
2639  * @param[out] error
2640  *   Pointer to error structure.
2641  *
2642  * @return
2643  *   0 on success, a negative errno value otherwise and rte_errno is set.
2644  */
2645
2646 int
2647 mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
2648                                uint64_t item_flags,
2649                                struct rte_eth_dev *dev,
2650                                struct rte_flow_error *error)
2651 {
2652         struct mlx5_priv *priv = dev->data->dev_private;
2653         const struct rte_flow_item_geneve *spec = item->spec;
2654         const struct rte_flow_item_geneve *mask = item->mask;
2655         int ret;
2656         uint16_t gbhdr;
2657         uint8_t opt_len = priv->config.hca_attr.geneve_max_opt_len ?
2658                           MLX5_GENEVE_OPT_LEN_1 : MLX5_GENEVE_OPT_LEN_0;
2659         const struct rte_flow_item_geneve nic_mask = {
2660                 .ver_opt_len_o_c_rsvd0 = RTE_BE16(0x3f80),
2661                 .vni = "\xff\xff\xff",
2662                 .protocol = RTE_BE16(UINT16_MAX),
2663         };
2664
2665         if (!priv->config.hca_attr.tunnel_stateless_geneve_rx)
2666                 return rte_flow_error_set(error, ENOTSUP,
2667                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2668                                           "L3 Geneve is not enabled by device"
2669                                           " parameter and/or not configured in"
2670                                           " firmware");
2671         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2672                 return rte_flow_error_set(error, ENOTSUP,
2673                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2674                                           "multiple tunnel layers not"
2675                                           " supported");
2676         /*
2677          * Verify only UDPv4 is present as defined in
2678          * https://tools.ietf.org/html/rfc7348
2679          */
2680         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2681                 return rte_flow_error_set(error, EINVAL,
2682                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2683                                           "no outer UDP layer found");
2684         if (!mask)
2685                 mask = &rte_flow_item_geneve_mask;
2686         ret = mlx5_flow_item_acceptable
2687                                   (item, (const uint8_t *)mask,
2688                                    (const uint8_t *)&nic_mask,
2689                                    sizeof(struct rte_flow_item_geneve),
2690                                    MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
2691         if (ret)
2692                 return ret;
2693         if (spec) {
2694                 gbhdr = rte_be_to_cpu_16(spec->ver_opt_len_o_c_rsvd0);
2695                 if (MLX5_GENEVE_VER_VAL(gbhdr) ||
2696                      MLX5_GENEVE_CRITO_VAL(gbhdr) ||
2697                      MLX5_GENEVE_RSVD_VAL(gbhdr) || spec->rsvd1)
2698                         return rte_flow_error_set(error, ENOTSUP,
2699                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2700                                                   item,
2701                                                   "Geneve protocol unsupported"
2702                                                   " fields are being used");
2703                 if (MLX5_GENEVE_OPTLEN_VAL(gbhdr) > opt_len)
2704                         return rte_flow_error_set
2705                                         (error, ENOTSUP,
2706                                          RTE_FLOW_ERROR_TYPE_ITEM,
2707                                          item,
2708                                          "Unsupported Geneve options length");
2709         }
2710         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2711                 return rte_flow_error_set
2712                                     (error, ENOTSUP,
2713                                      RTE_FLOW_ERROR_TYPE_ITEM, item,
2714                                      "Geneve tunnel must be fully defined");
2715         return 0;
2716 }
2717
2718 /**
2719  * Validate Geneve TLV option item.
2720  *
2721  * @param[in] item
2722  *   Item specification.
2723  * @param[in] last_item
2724  *   Previous validated item in the pattern items.
2725  * @param[in] geneve_item
2726  *   Previous GENEVE item specification.
2727  * @param[in] dev
2728  *   Pointer to the rte_eth_dev structure.
2729  * @param[out] error
2730  *   Pointer to error structure.
2731  *
2732  * @return
2733  *   0 on success, a negative errno value otherwise and rte_errno is set.
2734  */
2735 int
2736 mlx5_flow_validate_item_geneve_opt(const struct rte_flow_item *item,
2737                                    uint64_t last_item,
2738                                    const struct rte_flow_item *geneve_item,
2739                                    struct rte_eth_dev *dev,
2740                                    struct rte_flow_error *error)
2741 {
2742         struct mlx5_priv *priv = dev->data->dev_private;
2743         struct mlx5_dev_ctx_shared *sh = priv->sh;
2744         struct mlx5_geneve_tlv_option_resource *geneve_opt_resource;
2745         struct mlx5_hca_attr *hca_attr = &priv->config.hca_attr;
2746         uint8_t data_max_supported =
2747                         hca_attr->max_geneve_tlv_option_data_len * 4;
2748         struct mlx5_dev_config *config = &priv->config;
2749         const struct rte_flow_item_geneve *geneve_spec;
2750         const struct rte_flow_item_geneve *geneve_mask;
2751         const struct rte_flow_item_geneve_opt *spec = item->spec;
2752         const struct rte_flow_item_geneve_opt *mask = item->mask;
2753         unsigned int i;
2754         unsigned int data_len;
2755         uint8_t tlv_option_len;
2756         uint16_t optlen_m, optlen_v;
2757         const struct rte_flow_item_geneve_opt full_mask = {
2758                 .option_class = RTE_BE16(0xffff),
2759                 .option_type = 0xff,
2760                 .option_len = 0x1f,
2761         };
2762
2763         if (!mask)
2764                 mask = &rte_flow_item_geneve_opt_mask;
2765         if (!spec)
2766                 return rte_flow_error_set
2767                         (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item,
2768                         "Geneve TLV opt class/type/length must be specified");
2769         if ((uint32_t)spec->option_len > MLX5_GENEVE_OPTLEN_MASK)
2770                 return rte_flow_error_set
2771                         (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item,
2772                         "Geneve TLV opt length exceeeds the limit (31)");
2773         /* Check if class type and length masks are full. */
2774         if (full_mask.option_class != mask->option_class ||
2775             full_mask.option_type != mask->option_type ||
2776             full_mask.option_len != (mask->option_len & full_mask.option_len))
2777                 return rte_flow_error_set
2778                         (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item,
2779                         "Geneve TLV opt class/type/length masks must be full");
2780         /* Check if length is supported */
2781         if ((uint32_t)spec->option_len >
2782                         config->hca_attr.max_geneve_tlv_option_data_len)
2783                 return rte_flow_error_set
2784                         (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item,
2785                         "Geneve TLV opt length not supported");
2786         if (config->hca_attr.max_geneve_tlv_options > 1)
2787                 DRV_LOG(DEBUG,
2788                         "max_geneve_tlv_options supports more than 1 option");
2789         /* Check GENEVE item preceding. */
2790         if (!geneve_item || !(last_item & MLX5_FLOW_LAYER_GENEVE))
2791                 return rte_flow_error_set
2792                         (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item,
2793                         "Geneve opt item must be preceded with Geneve item");
2794         geneve_spec = geneve_item->spec;
2795         geneve_mask = geneve_item->mask ? geneve_item->mask :
2796                                           &rte_flow_item_geneve_mask;
2797         /* Check if GENEVE TLV option size doesn't exceed option length */
2798         if (geneve_spec && (geneve_mask->ver_opt_len_o_c_rsvd0 ||
2799                             geneve_spec->ver_opt_len_o_c_rsvd0)) {
2800                 tlv_option_len = spec->option_len & mask->option_len;
2801                 optlen_v = rte_be_to_cpu_16(geneve_spec->ver_opt_len_o_c_rsvd0);
2802                 optlen_v = MLX5_GENEVE_OPTLEN_VAL(optlen_v);
2803                 optlen_m = rte_be_to_cpu_16(geneve_mask->ver_opt_len_o_c_rsvd0);
2804                 optlen_m = MLX5_GENEVE_OPTLEN_VAL(optlen_m);
2805                 if ((optlen_v & optlen_m) <= tlv_option_len)
2806                         return rte_flow_error_set
2807                                 (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item,
2808                                  "GENEVE TLV option length exceeds optlen");
2809         }
2810         /* Check if length is 0 or data is 0. */
2811         if (spec->data == NULL || spec->option_len == 0)
2812                 return rte_flow_error_set
2813                         (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item,
2814                         "Geneve TLV opt with zero data/length not supported");
2815         /* Check not all data & mask are 0. */
2816         data_len = spec->option_len * 4;
2817         if (mask->data == NULL) {
2818                 for (i = 0; i < data_len; i++)
2819                         if (spec->data[i])
2820                                 break;
2821                 if (i == data_len)
2822                         return rte_flow_error_set(error, ENOTSUP,
2823                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
2824                                 "Can't match on Geneve option data 0");
2825         } else {
2826                 for (i = 0; i < data_len; i++)
2827                         if (spec->data[i] & mask->data[i])
2828                                 break;
2829                 if (i == data_len)
2830                         return rte_flow_error_set(error, ENOTSUP,
2831                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
2832                                 "Can't match on Geneve option data and mask 0");
2833                 /* Check data mask supported. */
2834                 for (i = data_max_supported; i < data_len ; i++)
2835                         if (mask->data[i])
2836                                 return rte_flow_error_set(error, ENOTSUP,
2837                                         RTE_FLOW_ERROR_TYPE_ITEM, item,
2838                                         "Data mask is of unsupported size");
2839         }
2840         /* Check GENEVE option is supported in NIC. */
2841         if (!config->hca_attr.geneve_tlv_opt)
2842                 return rte_flow_error_set
2843                         (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, item,
2844                         "Geneve TLV opt not supported");
2845         /* Check if we already have geneve option with different type/class. */
2846         rte_spinlock_lock(&sh->geneve_tlv_opt_sl);
2847         geneve_opt_resource = sh->geneve_tlv_option_resource;
2848         if (geneve_opt_resource != NULL)
2849                 if (geneve_opt_resource->option_class != spec->option_class ||
2850                     geneve_opt_resource->option_type != spec->option_type ||
2851                     geneve_opt_resource->length != spec->option_len) {
2852                         rte_spinlock_unlock(&sh->geneve_tlv_opt_sl);
2853                         return rte_flow_error_set(error, ENOTSUP,
2854                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
2855                                 "Only one Geneve TLV option supported");
2856                 }
2857         rte_spinlock_unlock(&sh->geneve_tlv_opt_sl);
2858         return 0;
2859 }
2860
2861 /**
2862  * Validate MPLS item.
2863  *
2864  * @param[in] dev
2865  *   Pointer to the rte_eth_dev structure.
2866  * @param[in] item
2867  *   Item specification.
2868  * @param[in] item_flags
2869  *   Bit-fields that holds the items detected until now.
2870  * @param[in] prev_layer
2871  *   The protocol layer indicated in previous item.
2872  * @param[out] error
2873  *   Pointer to error structure.
2874  *
2875  * @return
2876  *   0 on success, a negative errno value otherwise and rte_errno is set.
2877  */
2878 int
2879 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
2880                              const struct rte_flow_item *item __rte_unused,
2881                              uint64_t item_flags __rte_unused,
2882                              uint64_t prev_layer __rte_unused,
2883                              struct rte_flow_error *error)
2884 {
2885 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
2886         const struct rte_flow_item_mpls *mask = item->mask;
2887         struct mlx5_priv *priv = dev->data->dev_private;
2888         int ret;
2889
2890         if (!priv->config.mpls_en)
2891                 return rte_flow_error_set(error, ENOTSUP,
2892                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2893                                           "MPLS not supported or"
2894                                           " disabled in firmware"
2895                                           " configuration.");
2896         /* MPLS over IP, UDP, GRE is allowed */
2897         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
2898                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
2899                             MLX5_FLOW_LAYER_GRE |
2900                             MLX5_FLOW_LAYER_GRE_KEY)))
2901                 return rte_flow_error_set(error, EINVAL,
2902                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2903                                           "protocol filtering not compatible"
2904                                           " with MPLS layer");
2905         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
2906         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
2907             !(item_flags & MLX5_FLOW_LAYER_GRE))
2908                 return rte_flow_error_set(error, ENOTSUP,
2909                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2910                                           "multiple tunnel layers not"
2911                                           " supported");
2912         if (!mask)
2913                 mask = &rte_flow_item_mpls_mask;
2914         ret = mlx5_flow_item_acceptable
2915                 (item, (const uint8_t *)mask,
2916                  (const uint8_t *)&rte_flow_item_mpls_mask,
2917                  sizeof(struct rte_flow_item_mpls),
2918                  MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
2919         if (ret < 0)
2920                 return ret;
2921         return 0;
2922 #else
2923         return rte_flow_error_set(error, ENOTSUP,
2924                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
2925                                   "MPLS is not supported by Verbs, please"
2926                                   " update.");
2927 #endif
2928 }
2929
2930 /**
2931  * Validate NVGRE item.
2932  *
2933  * @param[in] item
2934  *   Item specification.
2935  * @param[in] item_flags
2936  *   Bit flags to mark detected items.
2937  * @param[in] target_protocol
2938  *   The next protocol in the previous item.
2939  * @param[out] error
2940  *   Pointer to error structure.
2941  *
2942  * @return
2943  *   0 on success, a negative errno value otherwise and rte_errno is set.
2944  */
2945 int
2946 mlx5_flow_validate_item_nvgre(const struct rte_flow_item *item,
2947                               uint64_t item_flags,
2948                               uint8_t target_protocol,
2949                               struct rte_flow_error *error)
2950 {
2951         const struct rte_flow_item_nvgre *mask = item->mask;
2952         int ret;
2953
2954         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2955                 return rte_flow_error_set(error, EINVAL,
2956                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2957                                           "protocol filtering not compatible"
2958                                           " with this GRE layer");
2959         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2960                 return rte_flow_error_set(error, ENOTSUP,
2961                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2962                                           "multiple tunnel layers not"
2963                                           " supported");
2964         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2965                 return rte_flow_error_set(error, ENOTSUP,
2966                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2967                                           "L3 Layer is missing");
2968         if (!mask)
2969                 mask = &rte_flow_item_nvgre_mask;
2970         ret = mlx5_flow_item_acceptable
2971                 (item, (const uint8_t *)mask,
2972                  (const uint8_t *)&rte_flow_item_nvgre_mask,
2973                  sizeof(struct rte_flow_item_nvgre),
2974                  MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
2975         if (ret < 0)
2976                 return ret;
2977         return 0;
2978 }
2979
2980 /**
2981  * Validate eCPRI item.
2982  *
2983  * @param[in] item
2984  *   Item specification.
2985  * @param[in] item_flags
2986  *   Bit-fields that holds the items detected until now.
2987  * @param[in] last_item
2988  *   Previous validated item in the pattern items.
2989  * @param[in] ether_type
2990  *   Type in the ethernet layer header (including dot1q).
2991  * @param[in] acc_mask
2992  *   Acceptable mask, if NULL default internal default mask
2993  *   will be used to check whether item fields are supported.
2994  * @param[out] error
2995  *   Pointer to error structure.
2996  *
2997  * @return
2998  *   0 on success, a negative errno value otherwise and rte_errno is set.
2999  */
3000 int
3001 mlx5_flow_validate_item_ecpri(const struct rte_flow_item *item,
3002                               uint64_t item_flags,
3003                               uint64_t last_item,
3004                               uint16_t ether_type,
3005                               const struct rte_flow_item_ecpri *acc_mask,
3006                               struct rte_flow_error *error)
3007 {
3008         const struct rte_flow_item_ecpri *mask = item->mask;
3009         const struct rte_flow_item_ecpri nic_mask = {
3010                 .hdr = {
3011                         .common = {
3012                                 .u32 =
3013                                 RTE_BE32(((const struct rte_ecpri_common_hdr) {
3014                                         .type = 0xFF,
3015                                         }).u32),
3016                         },
3017                         .dummy[0] = 0xFFFFFFFF,
3018                 },
3019         };
3020         const uint64_t outer_l2_vlan = (MLX5_FLOW_LAYER_OUTER_L2 |
3021                                         MLX5_FLOW_LAYER_OUTER_VLAN);
3022         struct rte_flow_item_ecpri mask_lo;
3023
3024         if (!(last_item & outer_l2_vlan) &&
3025             last_item != MLX5_FLOW_LAYER_OUTER_L4_UDP)
3026                 return rte_flow_error_set(error, EINVAL,
3027                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
3028                                           "eCPRI can only follow L2/VLAN layer or UDP layer");
3029         if ((last_item & outer_l2_vlan) && ether_type &&
3030             ether_type != RTE_ETHER_TYPE_ECPRI)
3031                 return rte_flow_error_set(error, EINVAL,
3032                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
3033                                           "eCPRI cannot follow L2/VLAN layer which ether type is not 0xAEFE");
3034         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
3035                 return rte_flow_error_set(error, EINVAL,
3036                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
3037                                           "eCPRI with tunnel is not supported right now");
3038         if (item_flags & MLX5_FLOW_LAYER_OUTER_L3)
3039                 return rte_flow_error_set(error, ENOTSUP,
3040                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
3041                                           "multiple L3 layers not supported");
3042         else if (item_flags & MLX5_FLOW_LAYER_OUTER_L4_TCP)
3043                 return rte_flow_error_set(error, EINVAL,
3044                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
3045                                           "eCPRI cannot coexist with a TCP layer");
3046         /* In specification, eCPRI could be over UDP layer. */
3047         else if (item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP)
3048                 return rte_flow_error_set(error, EINVAL,
3049                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
3050                                           "eCPRI over UDP layer is not yet supported right now");
3051         /* Mask for type field in common header could be zero. */
3052         if (!mask)
3053                 mask = &rte_flow_item_ecpri_mask;
3054         mask_lo.hdr.common.u32 = rte_be_to_cpu_32(mask->hdr.common.u32);
3055         /* Input mask is in big-endian format. */
3056         if (mask_lo.hdr.common.type != 0 && mask_lo.hdr.common.type != 0xff)
3057                 return rte_flow_error_set(error, EINVAL,
3058                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
3059                                           "partial mask is not supported for protocol");
3060         else if (mask_lo.hdr.common.type == 0 && mask->hdr.dummy[0] != 0)
3061                 return rte_flow_error_set(error, EINVAL,
3062                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
3063                                           "message header mask must be after a type mask");
3064         return mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
3065                                          acc_mask ? (const uint8_t *)acc_mask
3066                                                   : (const uint8_t *)&nic_mask,
3067                                          sizeof(struct rte_flow_item_ecpri),
3068                                          MLX5_ITEM_RANGE_NOT_ACCEPTED, error);
3069 }
3070
3071 /**
3072  * Release resource related QUEUE/RSS action split.
3073  *
3074  * @param dev
3075  *   Pointer to Ethernet device.
3076  * @param flow
3077  *   Flow to release id's from.
3078  */
3079 static void
3080 flow_mreg_split_qrss_release(struct rte_eth_dev *dev,
3081                              struct rte_flow *flow)
3082 {
3083         struct mlx5_priv *priv = dev->data->dev_private;
3084         uint32_t handle_idx;
3085         struct mlx5_flow_handle *dev_handle;
3086
3087         SILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW], flow->dev_handles,
3088                        handle_idx, dev_handle, next)
3089                 if (dev_handle->split_flow_id &&
3090                     !dev_handle->is_meter_flow_id)
3091                         mlx5_ipool_free(priv->sh->ipool
3092                                         [MLX5_IPOOL_RSS_EXPANTION_FLOW_ID],
3093                                         dev_handle->split_flow_id);
3094 }
3095
3096 static int
3097 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
3098                    const struct rte_flow_attr *attr __rte_unused,
3099                    const struct rte_flow_item items[] __rte_unused,
3100                    const struct rte_flow_action actions[] __rte_unused,
3101                    bool external __rte_unused,
3102                    int hairpin __rte_unused,
3103                    struct rte_flow_error *error)
3104 {
3105         return rte_flow_error_set(error, ENOTSUP,
3106                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
3107 }
3108
3109 static struct mlx5_flow *
3110 flow_null_prepare(struct rte_eth_dev *dev __rte_unused,
3111                   const struct rte_flow_attr *attr __rte_unused,
3112                   const struct rte_flow_item items[] __rte_unused,
3113                   const struct rte_flow_action actions[] __rte_unused,
3114                   struct rte_flow_error *error)
3115 {
3116         rte_flow_error_set(error, ENOTSUP,
3117                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
3118         return NULL;
3119 }
3120
3121 static int
3122 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
3123                     struct mlx5_flow *dev_flow __rte_unused,
3124                     const struct rte_flow_attr *attr __rte_unused,
3125                     const struct rte_flow_item items[] __rte_unused,
3126                     const struct rte_flow_action actions[] __rte_unused,
3127                     struct rte_flow_error *error)
3128 {
3129         return rte_flow_error_set(error, ENOTSUP,
3130                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
3131 }
3132
3133 static int
3134 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
3135                 struct rte_flow *flow __rte_unused,
3136                 struct rte_flow_error *error)
3137 {
3138         return rte_flow_error_set(error, ENOTSUP,
3139                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
3140 }
3141
3142 static void
3143 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
3144                  struct rte_flow *flow __rte_unused)
3145 {
3146 }
3147
3148 static void
3149 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
3150                   struct rte_flow *flow __rte_unused)
3151 {
3152 }
3153
3154 static int
3155 flow_null_query(struct rte_eth_dev *dev __rte_unused,
3156                 struct rte_flow *flow __rte_unused,
3157                 const struct rte_flow_action *actions __rte_unused,
3158                 void *data __rte_unused,
3159                 struct rte_flow_error *error)
3160 {
3161         return rte_flow_error_set(error, ENOTSUP,
3162                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
3163 }
3164
3165 static int
3166 flow_null_sync_domain(struct rte_eth_dev *dev __rte_unused,
3167                       uint32_t domains __rte_unused,
3168                       uint32_t flags __rte_unused)
3169 {
3170         return 0;
3171 }
3172
3173 /* Void driver to protect from null pointer reference. */
3174 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
3175         .validate = flow_null_validate,
3176         .prepare = flow_null_prepare,
3177         .translate = flow_null_translate,
3178         .apply = flow_null_apply,
3179         .remove = flow_null_remove,
3180         .destroy = flow_null_destroy,
3181         .query = flow_null_query,
3182         .sync_domain = flow_null_sync_domain,
3183 };
3184
3185 /**
3186  * Select flow driver type according to flow attributes and device
3187  * configuration.
3188  *
3189  * @param[in] dev
3190  *   Pointer to the dev structure.
3191  * @param[in] attr
3192  *   Pointer to the flow attributes.
3193  *
3194  * @return
3195  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
3196  */
3197 static enum mlx5_flow_drv_type
3198 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
3199 {
3200         struct mlx5_priv *priv = dev->data->dev_private;
3201         /* The OS can determine first a specific flow type (DV, VERBS) */
3202         enum mlx5_flow_drv_type type = mlx5_flow_os_get_type();
3203
3204         if (type != MLX5_FLOW_TYPE_MAX)
3205                 return type;
3206         /* If no OS specific type - continue with DV/VERBS selection */
3207         if (attr->transfer && priv->config.dv_esw_en)
3208                 type = MLX5_FLOW_TYPE_DV;
3209         if (!attr->transfer)
3210                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
3211                                                  MLX5_FLOW_TYPE_VERBS;
3212         return type;
3213 }
3214
3215 #define flow_get_drv_ops(type) flow_drv_ops[type]
3216
3217 /**
3218  * Flow driver validation API. This abstracts calling driver specific functions.
3219  * The type of flow driver is determined according to flow attributes.
3220  *
3221  * @param[in] dev
3222  *   Pointer to the dev structure.
3223  * @param[in] attr
3224  *   Pointer to the flow attributes.
3225  * @param[in] items
3226  *   Pointer to the list of items.
3227  * @param[in] actions
3228  *   Pointer to the list of actions.
3229  * @param[in] external
3230  *   This flow rule is created by request external to PMD.
3231  * @param[in] hairpin
3232  *   Number of hairpin TX actions, 0 means classic flow.
3233  * @param[out] error
3234  *   Pointer to the error structure.
3235  *
3236  * @return
3237  *   0 on success, a negative errno value otherwise and rte_errno is set.
3238  */
3239 static inline int
3240 flow_drv_validate(struct rte_eth_dev *dev,
3241                   const struct rte_flow_attr *attr,
3242                   const struct rte_flow_item items[],
3243                   const struct rte_flow_action actions[],
3244                   bool external, int hairpin, struct rte_flow_error *error)
3245 {
3246         const struct mlx5_flow_driver_ops *fops;
3247         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
3248
3249         fops = flow_get_drv_ops(type);
3250         return fops->validate(dev, attr, items, actions, external,
3251                               hairpin, error);
3252 }
3253
3254 /**
3255  * Flow driver preparation API. This abstracts calling driver specific
3256  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
3257  * calculates the size of memory required for device flow, allocates the memory,
3258  * initializes the device flow and returns the pointer.
3259  *
3260  * @note
3261  *   This function initializes device flow structure such as dv or verbs in
3262  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
3263  *   rest. For example, adding returning device flow to flow->dev_flow list and
3264  *   setting backward reference to the flow should be done out of this function.
3265  *   layers field is not filled either.
3266  *
3267  * @param[in] dev
3268  *   Pointer to the dev structure.
3269  * @param[in] attr
3270  *   Pointer to the flow attributes.
3271  * @param[in] items
3272  *   Pointer to the list of items.
3273  * @param[in] actions
3274  *   Pointer to the list of actions.
3275  * @param[in] flow_idx
3276  *   This memory pool index to the flow.
3277  * @param[out] error
3278  *   Pointer to the error structure.
3279  *
3280  * @return
3281  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
3282  */
3283 static inline struct mlx5_flow *
3284 flow_drv_prepare(struct rte_eth_dev *dev,
3285                  const struct rte_flow *flow,
3286                  const struct rte_flow_attr *attr,
3287                  const struct rte_flow_item items[],
3288                  const struct rte_flow_action actions[],
3289                  uint32_t flow_idx,
3290                  struct rte_flow_error *error)
3291 {
3292         const struct mlx5_flow_driver_ops *fops;
3293         enum mlx5_flow_drv_type type = flow->drv_type;
3294         struct mlx5_flow *mlx5_flow = NULL;
3295
3296         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
3297         fops = flow_get_drv_ops(type);
3298         mlx5_flow = fops->prepare(dev, attr, items, actions, error);
3299         if (mlx5_flow)
3300                 mlx5_flow->flow_idx = flow_idx;
3301         return mlx5_flow;
3302 }
3303
3304 /**
3305  * Flow driver translation API. This abstracts calling driver specific
3306  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
3307  * translates a generic flow into a driver flow. flow_drv_prepare() must
3308  * precede.
3309  *
3310  * @note
3311  *   dev_flow->layers could be filled as a result of parsing during translation
3312  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
3313  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
3314  *   flow->actions could be overwritten even though all the expanded dev_flows
3315  *   have the same actions.
3316  *
3317  * @param[in] dev
3318  *   Pointer to the rte dev structure.
3319  * @param[in, out] dev_flow
3320  *   Pointer to the mlx5 flow.
3321  * @param[in] attr
3322  *   Pointer to the flow attributes.
3323  * @param[in] items
3324  *   Pointer to the list of items.
3325  * @param[in] actions
3326  *   Pointer to the list of actions.
3327  * @param[out] error
3328  *   Pointer to the error structure.
3329  *
3330  * @return
3331  *   0 on success, a negative errno value otherwise and rte_errno is set.
3332  */
3333 static inline int
3334 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
3335                    const struct rte_flow_attr *attr,
3336                    const struct rte_flow_item items[],
3337                    const struct rte_flow_action actions[],
3338                    struct rte_flow_error *error)
3339 {
3340         const struct mlx5_flow_driver_ops *fops;
3341         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
3342
3343         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
3344         fops = flow_get_drv_ops(type);
3345         return fops->translate(dev, dev_flow, attr, items, actions, error);
3346 }
3347
3348 /**
3349  * Flow driver apply API. This abstracts calling driver specific functions.
3350  * Parent flow (rte_flow) should have driver type (drv_type). It applies
3351  * translated driver flows on to device. flow_drv_translate() must precede.
3352  *
3353  * @param[in] dev
3354  *   Pointer to Ethernet device structure.
3355  * @param[in, out] flow
3356  *   Pointer to flow structure.
3357  * @param[out] error
3358  *   Pointer to error structure.
3359  *
3360  * @return
3361  *   0 on success, a negative errno value otherwise and rte_errno is set.
3362  */
3363 static inline int
3364 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
3365                struct rte_flow_error *error)
3366 {
3367         const struct mlx5_flow_driver_ops *fops;
3368         enum mlx5_flow_drv_type type = flow->drv_type;
3369
3370         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
3371         fops = flow_get_drv_ops(type);
3372         return fops->apply(dev, flow, error);
3373 }
3374
3375 /**
3376  * Flow driver destroy API. This abstracts calling driver specific functions.
3377  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
3378  * on device and releases resources of the flow.
3379  *
3380  * @param[in] dev
3381  *   Pointer to Ethernet device.
3382  * @param[in, out] flow
3383  *   Pointer to flow structure.
3384  */
3385 static inline void
3386 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
3387 {
3388         const struct mlx5_flow_driver_ops *fops;
3389         enum mlx5_flow_drv_type type = flow->drv_type;
3390
3391         flow_mreg_split_qrss_release(dev, flow);
3392         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
3393         fops = flow_get_drv_ops(type);
3394         fops->destroy(dev, flow);
3395 }
3396
3397 /**
3398  * Flow driver find RSS policy tbl API. This abstracts calling driver
3399  * specific functions. Parent flow (rte_flow) should have driver
3400  * type (drv_type). It will find the RSS policy table that has the rss_desc.
3401  *
3402  * @param[in] dev
3403  *   Pointer to Ethernet device.
3404  * @param[in, out] flow
3405  *   Pointer to flow structure.
3406  * @param[in] policy
3407  *   Pointer to meter policy table.
3408  * @param[in] rss_desc
3409  *   Pointer to rss_desc
3410  */
3411 static struct mlx5_flow_meter_sub_policy *
3412 flow_drv_meter_sub_policy_rss_prepare(struct rte_eth_dev *dev,
3413                 struct rte_flow *flow,
3414                 struct mlx5_flow_meter_policy *policy,
3415                 struct mlx5_flow_rss_desc *rss_desc[MLX5_MTR_RTE_COLORS])
3416 {
3417         const struct mlx5_flow_driver_ops *fops;
3418         enum mlx5_flow_drv_type type = flow->drv_type;
3419
3420         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
3421         fops = flow_get_drv_ops(type);
3422         return fops->meter_sub_policy_rss_prepare(dev, policy, rss_desc);
3423 }
3424
3425 /**
3426  * Get RSS action from the action list.
3427  *
3428  * @param[in] dev
3429  *   Pointer to Ethernet device.
3430  * @param[in] actions
3431  *   Pointer to the list of actions.
3432  * @param[in] flow
3433  *   Parent flow structure pointer.
3434  *
3435  * @return
3436  *   Pointer to the RSS action if exist, else return NULL.
3437  */
3438 static const struct rte_flow_action_rss*
3439 flow_get_rss_action(struct rte_eth_dev *dev,
3440                     const struct rte_flow_action actions[])
3441 {
3442         struct mlx5_priv *priv = dev->data->dev_private;
3443         const struct rte_flow_action_rss *rss = NULL;
3444
3445         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3446                 switch (actions->type) {
3447                 case RTE_FLOW_ACTION_TYPE_RSS:
3448                         rss = actions->conf;
3449                         break;
3450                 case RTE_FLOW_ACTION_TYPE_SAMPLE:
3451                 {
3452                         const struct rte_flow_action_sample *sample =
3453                                                                 actions->conf;
3454                         const struct rte_flow_action *act = sample->actions;
3455                         for (; act->type != RTE_FLOW_ACTION_TYPE_END; act++)
3456                                 if (act->type == RTE_FLOW_ACTION_TYPE_RSS)
3457                                         rss = act->conf;
3458                         break;
3459                 }
3460                 case RTE_FLOW_ACTION_TYPE_METER:
3461                 {
3462                         uint32_t mtr_idx;
3463                         struct mlx5_flow_meter_info *fm;
3464                         struct mlx5_flow_meter_policy *policy;
3465                         const struct rte_flow_action_meter *mtr = actions->conf;
3466
3467                         fm = mlx5_flow_meter_find(priv, mtr->mtr_id, &mtr_idx);
3468                         if (fm) {
3469                                 policy = mlx5_flow_meter_policy_find(dev,
3470                                                 fm->policy_id, NULL);
3471                                 if (policy && policy->is_rss)
3472                                         rss =
3473                                 policy->act_cnt[RTE_COLOR_GREEN].rss->conf;
3474                         }
3475                         break;
3476                 }
3477                 default:
3478                         break;
3479                 }
3480         }
3481         return rss;
3482 }
3483
3484 /**
3485  * Get ASO age action by index.
3486  *
3487  * @param[in] dev
3488  *   Pointer to the Ethernet device structure.
3489  * @param[in] age_idx
3490  *   Index to the ASO age action.
3491  *
3492  * @return
3493  *   The specified ASO age action.
3494  */
3495 struct mlx5_aso_age_action*
3496 flow_aso_age_get_by_idx(struct rte_eth_dev *dev, uint32_t age_idx)
3497 {
3498         uint16_t pool_idx = age_idx & UINT16_MAX;
3499         uint16_t offset = (age_idx >> 16) & UINT16_MAX;
3500         struct mlx5_priv *priv = dev->data->dev_private;
3501         struct mlx5_aso_age_mng *mng = priv->sh->aso_age_mng;
3502         struct mlx5_aso_age_pool *pool = mng->pools[pool_idx];
3503
3504         return &pool->actions[offset - 1];
3505 }
3506
3507 /* maps indirect action to translated direct in some actions array */
3508 struct mlx5_translated_action_handle {
3509         struct rte_flow_action_handle *action; /**< Indirect action handle. */
3510         int index; /**< Index in related array of rte_flow_action. */
3511 };
3512
3513 /**
3514  * Translates actions of type RTE_FLOW_ACTION_TYPE_INDIRECT to related
3515  * direct action if translation possible.
3516  * This functionality used to run same execution path for both direct and
3517  * indirect actions on flow create. All necessary preparations for indirect
3518  * action handling should be performed on *handle* actions list returned
3519  * from this call.
3520  *
3521  * @param[in] dev
3522  *   Pointer to Ethernet device.
3523  * @param[in] actions
3524  *   List of actions to translate.
3525  * @param[out] handle
3526  *   List to store translated indirect action object handles.
3527  * @param[in, out] indir_n
3528  *   Size of *handle* array. On return should be updated with number of
3529  *   indirect actions retrieved from the *actions* list.
3530  * @param[out] translated_actions
3531  *   List of actions where all indirect actions were translated to direct
3532  *   if possible. NULL if no translation took place.
3533  * @param[out] error
3534  *   Pointer to the error structure.
3535  *
3536  * @return
3537  *   0 on success, a negative errno value otherwise and rte_errno is set.
3538  */
3539 static int
3540 flow_action_handles_translate(struct rte_eth_dev *dev,
3541                               const struct rte_flow_action actions[],
3542                               struct mlx5_translated_action_handle *handle,
3543                               int *indir_n,
3544                               struct rte_flow_action **translated_actions,
3545                               struct rte_flow_error *error)
3546 {
3547         struct mlx5_priv *priv = dev->data->dev_private;
3548         struct rte_flow_action *translated = NULL;
3549         size_t actions_size;
3550         int n;
3551         int copied_n = 0;
3552         struct mlx5_translated_action_handle *handle_end = NULL;
3553
3554         for (n = 0; actions[n].type != RTE_FLOW_ACTION_TYPE_END; n++) {
3555                 if (actions[n].type != RTE_FLOW_ACTION_TYPE_INDIRECT)
3556                         continue;
3557                 if (copied_n == *indir_n) {
3558                         return rte_flow_error_set
3559                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_NUM,
3560                                  NULL, "too many shared actions");
3561                 }
3562                 rte_memcpy(&handle[copied_n].action, &actions[n].conf,
3563                            sizeof(actions[n].conf));
3564                 handle[copied_n].index = n;
3565                 copied_n++;
3566         }
3567         n++;
3568         *indir_n = copied_n;
3569         if (!copied_n)
3570                 return 0;
3571         actions_size = sizeof(struct rte_flow_action) * n;
3572         translated = mlx5_malloc(MLX5_MEM_ZERO, actions_size, 0, SOCKET_ID_ANY);
3573         if (!translated) {
3574                 rte_errno = ENOMEM;
3575                 return -ENOMEM;
3576         }
3577         memcpy(translated, actions, actions_size);
3578         for (handle_end = handle + copied_n; handle < handle_end; handle++) {
3579                 struct mlx5_shared_action_rss *shared_rss;
3580                 uint32_t act_idx = (uint32_t)(uintptr_t)handle->action;
3581                 uint32_t type = act_idx >> MLX5_INDIRECT_ACTION_TYPE_OFFSET;
3582                 uint32_t idx = act_idx &
3583                                ((1u << MLX5_INDIRECT_ACTION_TYPE_OFFSET) - 1);
3584
3585                 switch (type) {
3586                 case MLX5_INDIRECT_ACTION_TYPE_RSS:
3587                         shared_rss = mlx5_ipool_get
3588                           (priv->sh->ipool[MLX5_IPOOL_RSS_SHARED_ACTIONS], idx);
3589                         translated[handle->index].type =
3590                                 RTE_FLOW_ACTION_TYPE_RSS;
3591                         translated[handle->index].conf =
3592                                 &shared_rss->origin;
3593                         break;
3594                 case MLX5_INDIRECT_ACTION_TYPE_COUNT:
3595                         translated[handle->index].type =
3596                                                 (enum rte_flow_action_type)
3597                                                 MLX5_RTE_FLOW_ACTION_TYPE_COUNT;
3598                         translated[handle->index].conf = (void *)(uintptr_t)idx;
3599                         break;
3600                 case MLX5_INDIRECT_ACTION_TYPE_AGE:
3601                         if (priv->sh->flow_hit_aso_en) {
3602                                 translated[handle->index].type =
3603                                         (enum rte_flow_action_type)
3604                                         MLX5_RTE_FLOW_ACTION_TYPE_AGE;
3605                                 translated[handle->index].conf =
3606                                                          (void *)(uintptr_t)idx;
3607                                 break;
3608                         }
3609                         /* Fall-through */
3610                 case MLX5_INDIRECT_ACTION_TYPE_CT:
3611                         if (priv->sh->ct_aso_en) {
3612                                 translated[handle->index].type =
3613                                         RTE_FLOW_ACTION_TYPE_CONNTRACK;
3614                                 translated[handle->index].conf =
3615                                                          (void *)(uintptr_t)idx;
3616                                 break;
3617                         }
3618                         /* Fall-through */
3619                 default:
3620                         mlx5_free(translated);
3621                         return rte_flow_error_set
3622                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION,
3623                                  NULL, "invalid indirect action type");
3624                 }
3625         }
3626         *translated_actions = translated;
3627         return 0;
3628 }
3629
3630 /**
3631  * Get Shared RSS action from the action list.
3632  *
3633  * @param[in] dev
3634  *   Pointer to Ethernet device.
3635  * @param[in] shared
3636  *   Pointer to the list of actions.
3637  * @param[in] shared_n
3638  *   Actions list length.
3639  *
3640  * @return
3641  *   The MLX5 RSS action ID if exists, otherwise return 0.
3642  */
3643 static uint32_t
3644 flow_get_shared_rss_action(struct rte_eth_dev *dev,
3645                            struct mlx5_translated_action_handle *handle,
3646                            int shared_n)
3647 {
3648         struct mlx5_translated_action_handle *handle_end;
3649         struct mlx5_priv *priv = dev->data->dev_private;
3650         struct mlx5_shared_action_rss *shared_rss;
3651
3652
3653         for (handle_end = handle + shared_n; handle < handle_end; handle++) {
3654                 uint32_t act_idx = (uint32_t)(uintptr_t)handle->action;
3655                 uint32_t type = act_idx >> MLX5_INDIRECT_ACTION_TYPE_OFFSET;
3656                 uint32_t idx = act_idx &
3657                                ((1u << MLX5_INDIRECT_ACTION_TYPE_OFFSET) - 1);
3658                 switch (type) {
3659                 case MLX5_INDIRECT_ACTION_TYPE_RSS:
3660                         shared_rss = mlx5_ipool_get
3661                                 (priv->sh->ipool[MLX5_IPOOL_RSS_SHARED_ACTIONS],
3662                                                                            idx);
3663                         __atomic_add_fetch(&shared_rss->refcnt, 1,
3664                                            __ATOMIC_RELAXED);
3665                         return idx;
3666                 default:
3667                         break;
3668                 }
3669         }
3670         return 0;
3671 }
3672
3673 static unsigned int
3674 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
3675 {
3676         const struct rte_flow_item *item;
3677         unsigned int has_vlan = 0;
3678
3679         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
3680                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
3681                         has_vlan = 1;
3682                         break;
3683                 }
3684         }
3685         if (has_vlan)
3686                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
3687                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
3688         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
3689                                MLX5_EXPANSION_ROOT_OUTER;
3690 }
3691
3692 /**
3693  *  Get layer flags from the prefix flow.
3694  *
3695  *  Some flows may be split to several subflows, the prefix subflow gets the
3696  *  match items and the suffix sub flow gets the actions.
3697  *  Some actions need the user defined match item flags to get the detail for
3698  *  the action.
3699  *  This function helps the suffix flow to get the item layer flags from prefix
3700  *  subflow.
3701  *
3702  * @param[in] dev_flow
3703  *   Pointer the created preifx subflow.
3704  *
3705  * @return
3706  *   The layers get from prefix subflow.
3707  */
3708 static inline uint64_t
3709 flow_get_prefix_layer_flags(struct mlx5_flow *dev_flow)
3710 {
3711         uint64_t layers = 0;
3712
3713         /*
3714          * Layers bits could be localization, but usually the compiler will
3715          * help to do the optimization work for source code.
3716          * If no decap actions, use the layers directly.
3717          */
3718         if (!(dev_flow->act_flags & MLX5_FLOW_ACTION_DECAP))
3719                 return dev_flow->handle->layers;
3720         /* Convert L3 layers with decap action. */
3721         if (dev_flow->handle->layers & MLX5_FLOW_LAYER_INNER_L3_IPV4)
3722                 layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
3723         else if (dev_flow->handle->layers & MLX5_FLOW_LAYER_INNER_L3_IPV6)
3724                 layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV6;
3725         /* Convert L4 layers with decap action.  */
3726         if (dev_flow->handle->layers & MLX5_FLOW_LAYER_INNER_L4_TCP)
3727                 layers |= MLX5_FLOW_LAYER_OUTER_L4_TCP;
3728         else if (dev_flow->handle->layers & MLX5_FLOW_LAYER_INNER_L4_UDP)
3729                 layers |= MLX5_FLOW_LAYER_OUTER_L4_UDP;
3730         return layers;
3731 }
3732
3733 /**
3734  * Get metadata split action information.
3735  *
3736  * @param[in] actions
3737  *   Pointer to the list of actions.
3738  * @param[out] qrss
3739  *   Pointer to the return pointer.
3740  * @param[out] qrss_type
3741  *   Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
3742  *   if no QUEUE/RSS is found.
3743  * @param[out] encap_idx
3744  *   Pointer to the index of the encap action if exists, otherwise the last
3745  *   action index.
3746  *
3747  * @return
3748  *   Total number of actions.
3749  */
3750 static int
3751 flow_parse_metadata_split_actions_info(const struct rte_flow_action actions[],
3752                                        const struct rte_flow_action **qrss,
3753                                        int *encap_idx)
3754 {
3755         const struct rte_flow_action_raw_encap *raw_encap;
3756         int actions_n = 0;
3757         int raw_decap_idx = -1;
3758
3759         *encap_idx = -1;
3760         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3761                 switch (actions->type) {
3762                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3763                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3764                         *encap_idx = actions_n;
3765                         break;
3766                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3767                         raw_decap_idx = actions_n;
3768                         break;
3769                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3770                         raw_encap = actions->conf;
3771                         if (raw_encap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
3772                                 *encap_idx = raw_decap_idx != -1 ?
3773                                                       raw_decap_idx : actions_n;
3774                         break;
3775                 case RTE_FLOW_ACTION_TYPE_QUEUE:
3776                 case RTE_FLOW_ACTION_TYPE_RSS:
3777                         *qrss = actions;
3778                         break;
3779                 default:
3780                         break;
3781                 }
3782                 actions_n++;
3783         }
3784         if (*encap_idx == -1)
3785                 *encap_idx = actions_n;
3786         /* Count RTE_FLOW_ACTION_TYPE_END. */
3787         return actions_n + 1;
3788 }
3789
3790 /**
3791  * Check if the action will change packet.
3792  *
3793  * @param dev
3794  *   Pointer to Ethernet device.
3795  * @param[in] type
3796  *   action type.
3797  *
3798  * @return
3799  *   true if action will change packet, false otherwise.
3800  */
3801 static bool flow_check_modify_action_type(struct rte_eth_dev *dev,
3802                                           enum rte_flow_action_type type)
3803 {
3804         struct mlx5_priv *priv = dev->data->dev_private;
3805
3806         switch (type) {
3807         case RTE_FLOW_ACTION_TYPE_SET_MAC_SRC:
3808         case RTE_FLOW_ACTION_TYPE_SET_MAC_DST:
3809         case RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC:
3810         case RTE_FLOW_ACTION_TYPE_SET_IPV4_DST:
3811         case RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC:
3812         case RTE_FLOW_ACTION_TYPE_SET_IPV6_DST:
3813         case RTE_FLOW_ACTION_TYPE_SET_TP_SRC:
3814         case RTE_FLOW_ACTION_TYPE_SET_TP_DST:
3815         case RTE_FLOW_ACTION_TYPE_DEC_TTL:
3816         case RTE_FLOW_ACTION_TYPE_SET_TTL:
3817         case RTE_FLOW_ACTION_TYPE_INC_TCP_SEQ:
3818         case RTE_FLOW_ACTION_TYPE_DEC_TCP_SEQ:
3819         case RTE_FLOW_ACTION_TYPE_INC_TCP_ACK:
3820         case RTE_FLOW_ACTION_TYPE_DEC_TCP_ACK:
3821         case RTE_FLOW_ACTION_TYPE_SET_IPV4_DSCP:
3822         case RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP:
3823         case RTE_FLOW_ACTION_TYPE_SET_META:
3824         case RTE_FLOW_ACTION_TYPE_SET_TAG:
3825         case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
3826         case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
3827         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
3828         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
3829         case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3830         case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3831         case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3832         case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
3833         case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3834         case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3835         case RTE_FLOW_ACTION_TYPE_MODIFY_FIELD:
3836                 return true;
3837         case RTE_FLOW_ACTION_TYPE_FLAG:
3838         case RTE_FLOW_ACTION_TYPE_MARK:
3839                 if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY)
3840                         return true;
3841                 else
3842                         return false;
3843         default:
3844                 return false;
3845         }
3846 }
3847
3848 /**
3849  * Check meter action from the action list.
3850  *
3851  * @param dev
3852  *   Pointer to Ethernet device.
3853  * @param[in] actions
3854  *   Pointer to the list of actions.
3855  * @param[out] has_mtr
3856  *   Pointer to the meter exist flag.
3857  * @param[out] has_modify
3858  *   Pointer to the flag showing there's packet change action.
3859  * @param[out] meter_id
3860  *   Pointer to the meter id.
3861  *
3862  * @return
3863  *   Total number of actions.
3864  */
3865 static int
3866 flow_check_meter_action(struct rte_eth_dev *dev,
3867                         const struct rte_flow_action actions[],
3868                         bool *has_mtr, bool *has_modify, uint32_t *meter_id)
3869 {
3870         const struct rte_flow_action_meter *mtr = NULL;
3871         int actions_n = 0;
3872
3873         MLX5_ASSERT(has_mtr);
3874         *has_mtr = false;
3875         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3876                 switch (actions->type) {
3877                 case RTE_FLOW_ACTION_TYPE_METER:
3878                         mtr = actions->conf;
3879                         *meter_id = mtr->mtr_id;
3880                         *has_mtr = true;
3881                         break;
3882                 default:
3883                         break;
3884                 }
3885                 if (!*has_mtr)
3886                         *has_modify |= flow_check_modify_action_type(dev,
3887                                                                 actions->type);
3888                 actions_n++;
3889         }
3890         /* Count RTE_FLOW_ACTION_TYPE_END. */
3891         return actions_n + 1;
3892 }
3893
3894 /**
3895  * Check if the flow should be split due to hairpin.
3896  * The reason for the split is that in current HW we can't
3897  * support encap and push-vlan on Rx, so if a flow contains
3898  * these actions we move it to Tx.
3899  *
3900  * @param dev
3901  *   Pointer to Ethernet device.
3902  * @param[in] attr
3903  *   Flow rule attributes.
3904  * @param[in] actions
3905  *   Associated actions (list terminated by the END action).
3906  *
3907  * @return
3908  *   > 0 the number of actions and the flow should be split,
3909  *   0 when no split required.
3910  */
3911 static int
3912 flow_check_hairpin_split(struct rte_eth_dev *dev,
3913                          const struct rte_flow_attr *attr,
3914                          const struct rte_flow_action actions[])
3915 {
3916         int queue_action = 0;
3917         int action_n = 0;
3918         int split = 0;
3919         const struct rte_flow_action_queue *queue;
3920         const struct rte_flow_action_rss *rss;
3921         const struct rte_flow_action_raw_encap *raw_encap;
3922         const struct rte_eth_hairpin_conf *conf;
3923
3924         if (!attr->ingress)
3925                 return 0;
3926         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3927                 switch (actions->type) {
3928                 case RTE_FLOW_ACTION_TYPE_QUEUE:
3929                         queue = actions->conf;
3930                         if (queue == NULL)
3931                                 return 0;
3932                         conf = mlx5_rxq_get_hairpin_conf(dev, queue->index);
3933                         if (conf == NULL || conf->tx_explicit != 0)
3934                                 return 0;
3935                         queue_action = 1;
3936                         action_n++;
3937                         break;
3938                 case RTE_FLOW_ACTION_TYPE_RSS:
3939                         rss = actions->conf;
3940                         if (rss == NULL || rss->queue_num == 0)
3941                                 return 0;
3942                         conf = mlx5_rxq_get_hairpin_conf(dev, rss->queue[0]);
3943                         if (conf == NULL || conf->tx_explicit != 0)
3944                                 return 0;
3945                         queue_action = 1;
3946                         action_n++;
3947                         break;
3948                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3949                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3950                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
3951                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
3952                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
3953                         split++;
3954                         action_n++;
3955                         break;
3956                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3957                         raw_encap = actions->conf;
3958                         if (raw_encap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
3959                                 split++;
3960                         action_n++;
3961                         break;
3962                 default:
3963                         action_n++;
3964                         break;
3965                 }
3966         }
3967         if (split && queue_action)
3968                 return action_n;
3969         return 0;
3970 }
3971
3972 /* Declare flow create/destroy prototype in advance. */
3973 static uint32_t
3974 flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
3975                  const struct rte_flow_attr *attr,
3976                  const struct rte_flow_item items[],
3977                  const struct rte_flow_action actions[],
3978                  bool external, struct rte_flow_error *error);
3979
3980 static void
3981 flow_list_destroy(struct rte_eth_dev *dev, uint32_t *list,
3982                   uint32_t flow_idx);
3983
3984 int
3985 flow_dv_mreg_match_cb(struct mlx5_hlist *list __rte_unused,
3986                       struct mlx5_hlist_entry *entry,
3987                       uint64_t key, void *cb_ctx __rte_unused)
3988 {
3989         struct mlx5_flow_mreg_copy_resource *mcp_res =
3990                 container_of(entry, typeof(*mcp_res), hlist_ent);
3991
3992         return mcp_res->mark_id != key;
3993 }
3994
3995 struct mlx5_hlist_entry *
3996 flow_dv_mreg_create_cb(struct mlx5_hlist *list, uint64_t key,
3997                        void *cb_ctx)
3998 {
3999         struct rte_eth_dev *dev = list->ctx;
4000         struct mlx5_priv *priv = dev->data->dev_private;
4001         struct mlx5_flow_cb_ctx *ctx = cb_ctx;
4002         struct mlx5_flow_mreg_copy_resource *mcp_res;
4003         struct rte_flow_error *error = ctx->error;
4004         uint32_t idx = 0;
4005         int ret;
4006         uint32_t mark_id = key;
4007         struct rte_flow_attr attr = {
4008                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
4009                 .ingress = 1,
4010         };
4011         struct mlx5_rte_flow_item_tag tag_spec = {
4012                 .data = mark_id,
4013         };
4014         struct rte_flow_item items[] = {
4015                 [1] = { .type = RTE_FLOW_ITEM_TYPE_END, },
4016         };
4017         struct rte_flow_action_mark ftag = {
4018                 .id = mark_id,
4019         };
4020         struct mlx5_flow_action_copy_mreg cp_mreg = {
4021                 .dst = REG_B,
4022                 .src = REG_NON,
4023         };
4024         struct rte_flow_action_jump jump = {
4025                 .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
4026         };
4027         struct rte_flow_action actions[] = {
4028                 [3] = { .type = RTE_FLOW_ACTION_TYPE_END, },
4029         };
4030
4031         /* Fill the register fileds in the flow. */
4032         ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
4033         if (ret < 0)
4034                 return NULL;
4035         tag_spec.id = ret;
4036         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
4037         if (ret < 0)
4038                 return NULL;
4039         cp_mreg.src = ret;
4040         /* Provide the full width of FLAG specific value. */
4041         if (mark_id == (priv->sh->dv_regc0_mask & MLX5_FLOW_MARK_DEFAULT))
4042                 tag_spec.data = MLX5_FLOW_MARK_DEFAULT;
4043         /* Build a new flow. */
4044         if (mark_id != MLX5_DEFAULT_COPY_ID) {
4045                 items[0] = (struct rte_flow_item){
4046                         .type = (enum rte_flow_item_type)
4047                                 MLX5_RTE_FLOW_ITEM_TYPE_TAG,
4048                         .spec = &tag_spec,
4049                 };
4050                 items[1] = (struct rte_flow_item){
4051                         .type = RTE_FLOW_ITEM_TYPE_END,
4052                 };
4053                 actions[0] = (struct rte_flow_action){
4054                         .type = (enum rte_flow_action_type)
4055                                 MLX5_RTE_FLOW_ACTION_TYPE_MARK,
4056                         .conf = &ftag,
4057                 };
4058                 actions[1] = (struct rte_flow_action){
4059                         .type = (enum rte_flow_action_type)
4060                                 MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
4061                         .conf = &cp_mreg,
4062                 };
4063                 actions[2] = (struct rte_flow_action){
4064                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
4065                         .conf = &jump,
4066                 };
4067                 actions[3] = (struct rte_flow_action){
4068                         .type = RTE_FLOW_ACTION_TYPE_END,
4069                 };
4070         } else {
4071                 /* Default rule, wildcard match. */
4072                 attr.priority = MLX5_FLOW_LOWEST_PRIO_INDICATOR;
4073                 items[0] = (struct rte_flow_item){
4074                         .type = RTE_FLOW_ITEM_TYPE_END,
4075                 };
4076                 actions[0] = (struct rte_flow_action){
4077                         .type = (enum rte_flow_action_type)
4078                                 MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
4079                         .conf = &cp_mreg,
4080                 };
4081                 actions[1] = (struct rte_flow_action){
4082                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
4083                         .conf = &jump,
4084                 };
4085                 actions[2] = (struct rte_flow_action){
4086                         .type = RTE_FLOW_ACTION_TYPE_END,
4087                 };
4088         }
4089         /* Build a new entry. */
4090         mcp_res = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_MCP], &idx);
4091         if (!mcp_res) {
4092                 rte_errno = ENOMEM;
4093                 return NULL;
4094         }
4095         mcp_res->idx = idx;
4096         mcp_res->mark_id = mark_id;
4097         /*
4098          * The copy Flows are not included in any list. There
4099          * ones are referenced from other Flows and can not
4100          * be applied, removed, deleted in ardbitrary order
4101          * by list traversing.
4102          */
4103         mcp_res->rix_flow = flow_list_create(dev, NULL, &attr, items,
4104                                          actions, false, error);
4105         if (!mcp_res->rix_flow) {
4106                 mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MCP], idx);
4107                 return NULL;
4108         }
4109         return &mcp_res->hlist_ent;
4110 }
4111
4112 /**
4113  * Add a flow of copying flow metadata registers in RX_CP_TBL.
4114  *
4115  * As mark_id is unique, if there's already a registered flow for the mark_id,
4116  * return by increasing the reference counter of the resource. Otherwise, create
4117  * the resource (mcp_res) and flow.
4118  *
4119  * Flow looks like,
4120  *   - If ingress port is ANY and reg_c[1] is mark_id,
4121  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
4122  *
4123  * For default flow (zero mark_id), flow is like,
4124  *   - If ingress port is ANY,
4125  *     reg_b := reg_c[0] and jump to RX_ACT_TBL.
4126  *
4127  * @param dev
4128  *   Pointer to Ethernet device.
4129  * @param mark_id
4130  *   ID of MARK action, zero means default flow for META.
4131  * @param[out] error
4132  *   Perform verbose error reporting if not NULL.
4133  *
4134  * @return
4135  *   Associated resource on success, NULL otherwise and rte_errno is set.
4136  */
4137 static struct mlx5_flow_mreg_copy_resource *
4138 flow_mreg_add_copy_action(struct rte_eth_dev *dev, uint32_t mark_id,
4139                           struct rte_flow_error *error)
4140 {
4141         struct mlx5_priv *priv = dev->data->dev_private;
4142         struct mlx5_hlist_entry *entry;
4143         struct mlx5_flow_cb_ctx ctx = {
4144                 .dev = dev,
4145                 .error = error,
4146         };
4147
4148         /* Check if already registered. */
4149         MLX5_ASSERT(priv->mreg_cp_tbl);
4150         entry = mlx5_hlist_register(priv->mreg_cp_tbl, mark_id, &ctx);
4151         if (!entry)
4152                 return NULL;
4153         return container_of(entry, struct mlx5_flow_mreg_copy_resource,
4154                             hlist_ent);
4155 }
4156
4157 void
4158 flow_dv_mreg_remove_cb(struct mlx5_hlist *list, struct mlx5_hlist_entry *entry)
4159 {
4160         struct mlx5_flow_mreg_copy_resource *mcp_res =
4161                 container_of(entry, typeof(*mcp_res), hlist_ent);
4162         struct rte_eth_dev *dev = list->ctx;
4163         struct mlx5_priv *priv = dev->data->dev_private;
4164
4165         MLX5_ASSERT(mcp_res->rix_flow);
4166         flow_list_destroy(dev, NULL, mcp_res->rix_flow);
4167         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MCP], mcp_res->idx);
4168 }
4169
4170 /**
4171  * Release flow in RX_CP_TBL.
4172  *
4173  * @param dev
4174  *   Pointer to Ethernet device.
4175  * @flow
4176  *   Parent flow for wich copying is provided.
4177  */
4178 static void
4179 flow_mreg_del_copy_action(struct rte_eth_dev *dev,
4180                           struct rte_flow *flow)
4181 {
4182         struct mlx5_flow_mreg_copy_resource *mcp_res;
4183         struct mlx5_priv *priv = dev->data->dev_private;
4184
4185         if (!flow->rix_mreg_copy)
4186                 return;
4187         mcp_res = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_MCP],
4188                                  flow->rix_mreg_copy);
4189         if (!mcp_res || !priv->mreg_cp_tbl)
4190                 return;
4191         MLX5_ASSERT(mcp_res->rix_flow);
4192         mlx5_hlist_unregister(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
4193         flow->rix_mreg_copy = 0;
4194 }
4195
4196 /**
4197  * Remove the default copy action from RX_CP_TBL.
4198  *
4199  * This functions is called in the mlx5_dev_start(). No thread safe
4200  * is guaranteed.
4201  *
4202  * @param dev
4203  *   Pointer to Ethernet device.
4204  */
4205 static void
4206 flow_mreg_del_default_copy_action(struct rte_eth_dev *dev)
4207 {
4208         struct mlx5_hlist_entry *entry;
4209         struct mlx5_priv *priv = dev->data->dev_private;
4210
4211         /* Check if default flow is registered. */
4212         if (!priv->mreg_cp_tbl)
4213                 return;
4214         entry = mlx5_hlist_lookup(priv->mreg_cp_tbl,
4215                                   MLX5_DEFAULT_COPY_ID, NULL);
4216         if (!entry)
4217                 return;
4218         mlx5_hlist_unregister(priv->mreg_cp_tbl, entry);
4219 }
4220
4221 /**
4222  * Add the default copy action in in RX_CP_TBL.
4223  *
4224  * This functions is called in the mlx5_dev_start(). No thread safe
4225  * is guaranteed.
4226  *
4227  * @param dev
4228  *   Pointer to Ethernet device.
4229  * @param[out] error
4230  *   Perform verbose error reporting if not NULL.
4231  *
4232  * @return
4233  *   0 for success, negative value otherwise and rte_errno is set.
4234  */
4235 static int
4236 flow_mreg_add_default_copy_action(struct rte_eth_dev *dev,
4237                                   struct rte_flow_error *error)
4238 {
4239         struct mlx5_priv *priv = dev->data->dev_private;
4240         struct mlx5_flow_mreg_copy_resource *mcp_res;
4241
4242         /* Check whether extensive metadata feature is engaged. */
4243         if (!priv->config.dv_flow_en ||
4244             priv->config.dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
4245             !mlx5_flow_ext_mreg_supported(dev) ||
4246             !priv->sh->dv_regc0_mask)
4247                 return 0;
4248         /*
4249          * Add default mreg copy flow may be called multiple time, but
4250          * only be called once in stop. Avoid register it twice.
4251          */
4252         if (mlx5_hlist_lookup(priv->mreg_cp_tbl, MLX5_DEFAULT_COPY_ID, NULL))
4253                 return 0;
4254         mcp_res = flow_mreg_add_copy_action(dev, MLX5_DEFAULT_COPY_ID, error);
4255         if (!mcp_res)
4256                 return -rte_errno;
4257         return 0;
4258 }
4259
4260 /**
4261  * Add a flow of copying flow metadata registers in RX_CP_TBL.
4262  *
4263  * All the flow having Q/RSS action should be split by
4264  * flow_mreg_split_qrss_prep() to pass by RX_CP_TBL. A flow in the RX_CP_TBL
4265  * performs the following,
4266  *   - CQE->flow_tag := reg_c[1] (MARK)
4267  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
4268  * As CQE's flow_tag is not a register, it can't be simply copied from reg_c[1]
4269  * but there should be a flow per each MARK ID set by MARK action.
4270  *
4271  * For the aforementioned reason, if there's a MARK action in flow's action
4272  * list, a corresponding flow should be added to the RX_CP_TBL in order to copy
4273  * the MARK ID to CQE's flow_tag like,
4274  *   - If reg_c[1] is mark_id,
4275  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
4276  *
4277  * For SET_META action which stores value in reg_c[0], as the destination is
4278  * also a flow metadata register (reg_b), adding a default flow is enough. Zero
4279  * MARK ID means the default flow. The default flow looks like,
4280  *   - For all flow, reg_b := reg_c[0] and jump to RX_ACT_TBL.
4281  *
4282  * @param dev
4283  *   Pointer to Ethernet device.
4284  * @param flow
4285  *   Pointer to flow structure.
4286  * @param[in] actions
4287  *   Pointer to the list of actions.
4288  * @param[out] error
4289  *   Perform verbose error reporting if not NULL.
4290  *
4291  * @return
4292  *   0 on success, negative value otherwise and rte_errno is set.
4293  */
4294 static int
4295 flow_mreg_update_copy_table(struct rte_eth_dev *dev,
4296                             struct rte_flow *flow,
4297                             const struct rte_flow_action *actions,
4298                             struct rte_flow_error *error)
4299 {
4300         struct mlx5_priv *priv = dev->data->dev_private;
4301         struct mlx5_dev_config *config = &priv->config;
4302         struct mlx5_flow_mreg_copy_resource *mcp_res;
4303         const struct rte_flow_action_mark *mark;
4304
4305         /* Check whether extensive metadata feature is engaged. */
4306         if (!config->dv_flow_en ||
4307             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
4308             !mlx5_flow_ext_mreg_supported(dev) ||
4309             !priv->sh->dv_regc0_mask)
4310                 return 0;
4311         /* Find MARK action. */
4312         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
4313                 switch (actions->type) {
4314                 case RTE_FLOW_ACTION_TYPE_FLAG:
4315                         mcp_res = flow_mreg_add_copy_action
4316                                 (dev, MLX5_FLOW_MARK_DEFAULT, error);
4317                         if (!mcp_res)
4318                                 return -rte_errno;
4319                         flow->rix_mreg_copy = mcp_res->idx;
4320                         return 0;
4321                 case RTE_FLOW_ACTION_TYPE_MARK:
4322                         mark = (const struct rte_flow_action_mark *)
4323                                 actions->conf;
4324                         mcp_res =
4325                                 flow_mreg_add_copy_action(dev, mark->id, error);
4326                         if (!mcp_res)
4327                                 return -rte_errno;
4328                         flow->rix_mreg_copy = mcp_res->idx;
4329                         return 0;
4330                 default:
4331                         break;
4332                 }
4333         }
4334         return 0;
4335 }
4336
4337 #define MLX5_MAX_SPLIT_ACTIONS 24
4338 #define MLX5_MAX_SPLIT_ITEMS 24
4339
4340 /**
4341  * Split the hairpin flow.
4342  * Since HW can't support encap and push-vlan on Rx, we move these
4343  * actions to Tx.
4344  * If the count action is after the encap then we also
4345  * move the count action. in this case the count will also measure
4346  * the outer bytes.
4347  *
4348  * @param dev
4349  *   Pointer to Ethernet device.
4350  * @param[in] actions
4351  *   Associated actions (list terminated by the END action).
4352  * @param[out] actions_rx
4353  *   Rx flow actions.
4354  * @param[out] actions_tx
4355  *   Tx flow actions..
4356  * @param[out] pattern_tx
4357  *   The pattern items for the Tx flow.
4358  * @param[out] flow_id
4359  *   The flow ID connected to this flow.
4360  *
4361  * @return
4362  *   0 on success.
4363  */
4364 static int
4365 flow_hairpin_split(struct rte_eth_dev *dev,
4366                    const struct rte_flow_action actions[],
4367                    struct rte_flow_action actions_rx[],
4368                    struct rte_flow_action actions_tx[],
4369                    struct rte_flow_item pattern_tx[],
4370                    uint32_t flow_id)
4371 {
4372         const struct rte_flow_action_raw_encap *raw_encap;
4373         const struct rte_flow_action_raw_decap *raw_decap;
4374         struct mlx5_rte_flow_action_set_tag *set_tag;
4375         struct rte_flow_action *tag_action;
4376         struct mlx5_rte_flow_item_tag *tag_item;
4377         struct rte_flow_item *item;
4378         char *addr;
4379         int encap = 0;
4380
4381         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
4382                 switch (actions->type) {
4383                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
4384                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
4385                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
4386                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
4387                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
4388                         rte_memcpy(actions_tx, actions,
4389                                sizeof(struct rte_flow_action));
4390                         actions_tx++;
4391                         break;
4392                 case RTE_FLOW_ACTION_TYPE_COUNT:
4393                         if (encap) {
4394                                 rte_memcpy(actions_tx, actions,
4395                                            sizeof(struct rte_flow_action));
4396                                 actions_tx++;
4397                         } else {
4398                                 rte_memcpy(actions_rx, actions,
4399                                            sizeof(struct rte_flow_action));
4400                                 actions_rx++;
4401                         }
4402                         break;
4403                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
4404                         raw_encap = actions->conf;
4405                         if (raw_encap->size > MLX5_ENCAPSULATION_DECISION_SIZE) {
4406                                 memcpy(actions_tx, actions,
4407                                        sizeof(struct rte_flow_action));
4408                                 actions_tx++;
4409                                 encap = 1;
4410                         } else {
4411                                 rte_memcpy(actions_rx, actions,
4412                                            sizeof(struct rte_flow_action));
4413                                 actions_rx++;
4414                         }
4415                         break;
4416                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
4417                         raw_decap = actions->conf;
4418                         if (raw_decap->size < MLX5_ENCAPSULATION_DECISION_SIZE) {
4419                                 memcpy(actions_tx, actions,
4420                                        sizeof(struct rte_flow_action));
4421                                 actions_tx++;
4422                         } else {
4423                                 rte_memcpy(actions_rx, actions,
4424                                            sizeof(struct rte_flow_action));
4425                                 actions_rx++;
4426                         }
4427                         break;
4428                 default:
4429                         rte_memcpy(actions_rx, actions,
4430                                    sizeof(struct rte_flow_action));
4431                         actions_rx++;
4432                         break;
4433                 }
4434         }
4435         /* Add set meta action and end action for the Rx flow. */
4436         tag_action = actions_rx;
4437         tag_action->type = (enum rte_flow_action_type)
4438                            MLX5_RTE_FLOW_ACTION_TYPE_TAG;
4439         actions_rx++;
4440         rte_memcpy(actions_rx, actions, sizeof(struct rte_flow_action));
4441         actions_rx++;
4442         set_tag = (void *)actions_rx;
4443         *set_tag = (struct mlx5_rte_flow_action_set_tag) {
4444                 .id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL),
4445                 .data = flow_id,
4446         };
4447         MLX5_ASSERT(set_tag->id > REG_NON);
4448         tag_action->conf = set_tag;
4449         /* Create Tx item list. */
4450         rte_memcpy(actions_tx, actions, sizeof(struct rte_flow_action));
4451         addr = (void *)&pattern_tx[2];
4452         item = pattern_tx;
4453         item->type = (enum rte_flow_item_type)
4454                      MLX5_RTE_FLOW_ITEM_TYPE_TAG;
4455         tag_item = (void *)addr;
4456         tag_item->data = flow_id;
4457         tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
4458         MLX5_ASSERT(set_tag->id > REG_NON);
4459         item->spec = tag_item;
4460         addr += sizeof(struct mlx5_rte_flow_item_tag);
4461         tag_item = (void *)addr;
4462         tag_item->data = UINT32_MAX;
4463         tag_item->id = UINT16_MAX;
4464         item->mask = tag_item;
4465         item->last = NULL;
4466         item++;
4467         item->type = RTE_FLOW_ITEM_TYPE_END;
4468         return 0;
4469 }
4470
4471 /**
4472  * The last stage of splitting chain, just creates the subflow
4473  * without any modification.
4474  *
4475  * @param[in] dev
4476  *   Pointer to Ethernet device.
4477  * @param[in] flow
4478  *   Parent flow structure pointer.
4479  * @param[in, out] sub_flow
4480  *   Pointer to return the created subflow, may be NULL.
4481  * @param[in] attr
4482  *   Flow rule attributes.
4483  * @param[in] items
4484  *   Pattern specification (list terminated by the END pattern item).
4485  * @param[in] actions
4486  *   Associated actions (list terminated by the END action).
4487  * @param[in] flow_split_info
4488  *   Pointer to flow split info structure.
4489  * @param[out] error
4490  *   Perform verbose error reporting if not NULL.
4491  * @return
4492  *   0 on success, negative value otherwise
4493  */
4494 static int
4495 flow_create_split_inner(struct rte_eth_dev *dev,
4496                         struct rte_flow *flow,
4497                         struct mlx5_flow **sub_flow,
4498                         const struct rte_flow_attr *attr,
4499                         const struct rte_flow_item items[],
4500                         const struct rte_flow_action actions[],
4501                         struct mlx5_flow_split_info *flow_split_info,
4502                         struct rte_flow_error *error)
4503 {
4504         struct mlx5_flow *dev_flow;
4505
4506         dev_flow = flow_drv_prepare(dev, flow, attr, items, actions,
4507                                     flow_split_info->flow_idx, error);
4508         if (!dev_flow)
4509                 return -rte_errno;
4510         dev_flow->flow = flow;
4511         dev_flow->external = flow_split_info->external;
4512         dev_flow->skip_scale = flow_split_info->skip_scale;
4513         /* Subflow object was created, we must include one in the list. */
4514         SILIST_INSERT(&flow->dev_handles, dev_flow->handle_idx,
4515                       dev_flow->handle, next);
4516         /*
4517          * If dev_flow is as one of the suffix flow, some actions in suffix
4518          * flow may need some user defined item layer flags, and pass the
4519          * Metadate rxq mark flag to suffix flow as well.
4520          */
4521         if (flow_split_info->prefix_layers)
4522                 dev_flow->handle->layers = flow_split_info->prefix_layers;
4523         if (flow_split_info->prefix_mark)
4524                 dev_flow->handle->mark = 1;
4525         if (sub_flow)
4526                 *sub_flow = dev_flow;
4527 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
4528         dev_flow->dv.table_id = flow_split_info->table_id;
4529 #endif
4530         return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
4531 }
4532
4533 /**
4534  * Get the sub policy of a meter.
4535  *
4536  * @param[in] dev
4537  *   Pointer to Ethernet device.
4538  * @param[in] flow
4539  *   Parent flow structure pointer.
4540  * @param[in] policy_id;
4541  *   Meter Policy id.
4542  * @param[in] attr
4543  *   Flow rule attributes.
4544  * @param[in] items
4545  *   Pattern specification (list terminated by the END pattern item).
4546  * @param[out] error
4547  *   Perform verbose error reporting if not NULL.
4548  *
4549  * @return
4550  *   Pointer to the meter sub policy, NULL otherwise and rte_errno is set.
4551  */
4552 static struct mlx5_flow_meter_sub_policy *
4553 get_meter_sub_policy(struct rte_eth_dev *dev,
4554                      struct rte_flow *flow,
4555                      uint32_t policy_id,
4556                      const struct rte_flow_attr *attr,
4557                      const struct rte_flow_item items[],
4558                      struct rte_flow_error *error)
4559 {
4560         struct mlx5_flow_meter_policy *policy;
4561         struct mlx5_flow_meter_sub_policy *sub_policy = NULL;
4562
4563         policy = mlx5_flow_meter_policy_find(dev, policy_id, NULL);
4564         if (!policy) {
4565                 rte_flow_error_set(error, EINVAL,
4566                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
4567                                    "Failed to find Meter Policy.");
4568                 goto exit;
4569         }
4570         if (policy->is_rss ||
4571                 (policy->is_queue &&
4572         !policy->sub_policys[MLX5_MTR_DOMAIN_INGRESS][0]->rix_hrxq[0])) {
4573                 struct mlx5_flow_workspace *wks =
4574                                 mlx5_flow_get_thread_workspace();
4575                 struct mlx5_flow_rss_desc rss_desc_v[MLX5_MTR_RTE_COLORS];
4576                 struct mlx5_flow_rss_desc *rss_desc[MLX5_MTR_RTE_COLORS] = {0};
4577                 uint32_t i;
4578
4579                 MLX5_ASSERT(wks);
4580                 /**
4581                  * This is a tmp dev_flow,
4582                  * no need to register any matcher for it in translate.
4583                  */
4584                 wks->skip_matcher_reg = 1;
4585                 for (i = 0; i < MLX5_MTR_RTE_COLORS; i++) {
4586                         struct mlx5_flow dev_flow = {0};
4587                         struct mlx5_flow_handle dev_handle = { {0} };
4588
4589                         rss_desc_v[i] = wks->rss_desc;
4590                         if (policy->is_rss) {
4591                                 const void *rss_act =
4592                                         policy->act_cnt[i].rss->conf;
4593                                 struct rte_flow_action rss_actions[2] = {
4594                                         [0] = {
4595                                         .type = RTE_FLOW_ACTION_TYPE_RSS,
4596                                         .conf = rss_act
4597                                         },
4598                                         [1] = {
4599                                         .type = RTE_FLOW_ACTION_TYPE_END,
4600                                         .conf = NULL
4601                                         }
4602                                 };
4603
4604                                 dev_flow.handle = &dev_handle;
4605                                 dev_flow.ingress = attr->ingress;
4606                                 dev_flow.flow = flow;
4607                                 dev_flow.external = 0;
4608 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
4609                                 dev_flow.dv.transfer = attr->transfer;
4610 #endif
4611                                 /**
4612                                  * Translate RSS action to get rss hash fields.
4613                                  */
4614                                 if (flow_drv_translate(dev, &dev_flow, attr,
4615                                                 items, rss_actions, error))
4616                                         goto exit;
4617                                 rss_desc_v[i].key_len = MLX5_RSS_HASH_KEY_LEN;
4618                                 rss_desc_v[i].hash_fields =
4619                                                 dev_flow.hash_fields;
4620                                 rss_desc_v[i].queue_num =
4621                                                 rss_desc_v[i].hash_fields ?
4622                                                 rss_desc_v[i].queue_num : 1;
4623                         } else {
4624                                 /* This is queue action. */
4625                                 rss_desc_v[i].key_len = 0;
4626                                 rss_desc_v[i].hash_fields = 0;
4627                                 rss_desc_v[i].queue =
4628                                         &policy->act_cnt[i].queue;
4629                                 rss_desc_v[i].queue_num = 1;
4630                         }
4631                         rss_desc[i] = &rss_desc_v[i];
4632                 }
4633                 sub_policy = flow_drv_meter_sub_policy_rss_prepare(dev,
4634                                                 flow, policy, rss_desc);
4635         } else {
4636                 enum mlx5_meter_domain mtr_domain =
4637                         attr->transfer ? MLX5_MTR_DOMAIN_TRANSFER :
4638                                 attr->egress ? MLX5_MTR_DOMAIN_EGRESS :
4639                                         MLX5_MTR_DOMAIN_INGRESS;
4640                 sub_policy = policy->sub_policys[mtr_domain][0];
4641         }
4642         if (!sub_policy) {
4643                 rte_flow_error_set(error, EINVAL,
4644                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
4645                         "Failed to get meter sub-policy.");
4646                 goto exit;
4647         }
4648 exit:
4649         return sub_policy;
4650 }
4651
4652 /**
4653  * Split the meter flow.
4654  *
4655  * As meter flow will split to three sub flow, other than meter
4656  * action, the other actions make sense to only meter accepts
4657  * the packet. If it need to be dropped, no other additional
4658  * actions should be take.
4659  *
4660  * One kind of special action which decapsulates the L3 tunnel
4661  * header will be in the prefix sub flow, as not to take the
4662  * L3 tunnel header into account.
4663  *
4664  * @param[in] dev
4665  *   Pointer to Ethernet device.
4666  * @param[in] flow
4667  *   Parent flow structure pointer.
4668  * @param[in] fm
4669  *   Pointer to flow meter structure.
4670  * @param[in] attr
4671  *   Flow rule attributes.
4672  * @param[in] items
4673  *   Pattern specification (list terminated by the END pattern item).
4674  * @param[out] sfx_items
4675  *   Suffix flow match items (list terminated by the END pattern item).
4676  * @param[in] actions
4677  *   Associated actions (list terminated by the END action).
4678  * @param[out] actions_sfx
4679  *   Suffix flow actions.
4680  * @param[out] actions_pre
4681  *   Prefix flow actions.
4682  * @param[out] mtr_flow_id
4683  *   Pointer to meter flow id.
4684  * @param[out] error
4685  *   Perform verbose error reporting if not NULL.
4686  *
4687  * @return
4688  *   0 on success, a negative errno value otherwise and rte_errno is set.
4689  */
4690 static int
4691 flow_meter_split_prep(struct rte_eth_dev *dev,
4692                       struct rte_flow *flow,
4693                       struct mlx5_flow_meter_info *fm,
4694                       const struct rte_flow_attr *attr,
4695                       const struct rte_flow_item items[],
4696                       struct rte_flow_item sfx_items[],
4697                       const struct rte_flow_action actions[],
4698                       struct rte_flow_action actions_sfx[],
4699                       struct rte_flow_action actions_pre[],
4700                       uint32_t *mtr_flow_id,
4701                       struct rte_flow_error *error)
4702 {
4703         struct mlx5_priv *priv = dev->data->dev_private;
4704         struct rte_flow_action *tag_action = NULL;
4705         struct rte_flow_item *tag_item;
4706         struct mlx5_rte_flow_action_set_tag *set_tag;
4707         const struct rte_flow_action_raw_encap *raw_encap;
4708         const struct rte_flow_action_raw_decap *raw_decap;
4709         struct mlx5_rte_flow_item_tag *tag_item_spec;
4710         struct mlx5_rte_flow_item_tag *tag_item_mask;
4711         uint32_t tag_id = 0;
4712         bool copy_vlan = false;
4713         struct rte_flow_action *hw_mtr_action;
4714         struct rte_flow_action *action_pre_head = NULL;
4715         bool mtr_first = priv->sh->meter_aso_en &&
4716                         (attr->egress ||
4717                         (attr->transfer && priv->representor_id != UINT16_MAX));
4718         uint8_t mtr_id_offset = priv->mtr_reg_share ? MLX5_MTR_COLOR_BITS : 0;
4719         uint8_t mtr_reg_bits = priv->mtr_reg_share ?
4720                                 MLX5_MTR_IDLE_BITS_IN_COLOR_REG : MLX5_REG_BITS;
4721         uint32_t flow_id = 0;
4722         uint32_t flow_id_reversed = 0;
4723         uint8_t flow_id_bits = 0;
4724         int shift;
4725
4726         /* For ASO meter, meter must be before tag in TX direction. */
4727         if (mtr_first) {
4728                 action_pre_head = actions_pre++;
4729                 /* Leave space for tag action. */
4730                 tag_action = actions_pre++;
4731         }
4732         /* Prepare the actions for prefix and suffix flow. */
4733         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
4734                 struct rte_flow_action *action_cur = NULL;
4735
4736                 switch (actions->type) {
4737                 case RTE_FLOW_ACTION_TYPE_METER:
4738                         if (mtr_first) {
4739                                 action_cur = action_pre_head;
4740                         } else {
4741                                 /* Leave space for tag action. */
4742                                 tag_action = actions_pre++;
4743                                 action_cur = actions_pre++;
4744                         }
4745                         break;
4746                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
4747                 case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
4748                         action_cur = actions_pre++;
4749                         break;
4750                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
4751                         raw_encap = actions->conf;
4752                         if (raw_encap->size < MLX5_ENCAPSULATION_DECISION_SIZE)
4753                                 action_cur = actions_pre++;
4754                         break;
4755                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
4756                         raw_decap = actions->conf;
4757                         if (raw_decap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
4758                                 action_cur = actions_pre++;
4759                         break;
4760                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
4761                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
4762                         copy_vlan = true;
4763                         break;
4764                 default:
4765                         break;
4766                 }
4767                 if (!action_cur)
4768                         action_cur = (fm->def_policy) ?
4769                                         actions_sfx++ : actions_pre++;
4770                 memcpy(action_cur, actions, sizeof(struct rte_flow_action));
4771         }
4772         /* Add end action to the actions. */
4773         actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
4774         if (priv->sh->meter_aso_en) {
4775                 /**
4776                  * For ASO meter, need to add an extra jump action explicitly,
4777                  * to jump from meter to policer table.
4778                  */
4779                 struct mlx5_flow_meter_sub_policy *sub_policy;
4780                 struct mlx5_flow_tbl_data_entry *tbl_data;
4781
4782                 if (!fm->def_policy) {
4783                         sub_policy = get_meter_sub_policy(dev, flow,
4784                                                           fm->policy_id, attr,
4785                                                           items, error);
4786                         if (!sub_policy)
4787                                 return -rte_errno;
4788                 } else {
4789                         enum mlx5_meter_domain mtr_domain =
4790                         attr->transfer ? MLX5_MTR_DOMAIN_TRANSFER :
4791                                 attr->egress ? MLX5_MTR_DOMAIN_EGRESS :
4792                                         MLX5_MTR_DOMAIN_INGRESS;
4793
4794                         sub_policy =
4795                         &priv->sh->mtrmng->def_policy[mtr_domain]->sub_policy;
4796                 }
4797                 tbl_data = container_of(sub_policy->tbl_rsc,
4798                                         struct mlx5_flow_tbl_data_entry, tbl);
4799                 hw_mtr_action = actions_pre++;
4800                 hw_mtr_action->type = (enum rte_flow_action_type)
4801                                       MLX5_RTE_FLOW_ACTION_TYPE_JUMP;
4802                 hw_mtr_action->conf = tbl_data->jump.action;
4803         }
4804         actions_pre->type = RTE_FLOW_ACTION_TYPE_END;
4805         actions_pre++;
4806         if (!tag_action)
4807                 return rte_flow_error_set(error, ENOMEM,
4808                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
4809                                         "No tag action space.");
4810         if (!mtr_flow_id) {
4811                 tag_action->type = RTE_FLOW_ACTION_TYPE_VOID;
4812                 goto exit;
4813         }
4814         /* Only default-policy Meter creates mtr flow id. */
4815         if (fm->def_policy) {
4816                 mlx5_ipool_malloc(fm->flow_ipool, &tag_id);
4817                 if (!tag_id)
4818                         return rte_flow_error_set(error, ENOMEM,
4819                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
4820                                         "Failed to allocate meter flow id.");
4821                 flow_id = tag_id - 1;
4822                 flow_id_bits = (!flow_id) ? 1 :
4823                                 (MLX5_REG_BITS - __builtin_clz(flow_id));
4824                 if ((flow_id_bits + priv->sh->mtrmng->max_mtr_bits) >
4825                     mtr_reg_bits) {
4826                         mlx5_ipool_free(fm->flow_ipool, tag_id);
4827                         return rte_flow_error_set(error, EINVAL,
4828                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
4829                                         "Meter flow id exceeds max limit.");
4830                 }
4831                 if (flow_id_bits > priv->sh->mtrmng->max_mtr_flow_bits)
4832                         priv->sh->mtrmng->max_mtr_flow_bits = flow_id_bits;
4833         }
4834         /* Prepare the suffix subflow items. */
4835         tag_item = sfx_items++;
4836         for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
4837                 int item_type = items->type;
4838
4839                 switch (item_type) {
4840                 case RTE_FLOW_ITEM_TYPE_PORT_ID:
4841                         memcpy(sfx_items, items, sizeof(*sfx_items));
4842                         sfx_items++;
4843                         break;
4844                 case RTE_FLOW_ITEM_TYPE_VLAN:
4845                         if (copy_vlan) {
4846                                 memcpy(sfx_items, items, sizeof(*sfx_items));
4847                                 /*
4848                                  * Convert to internal match item, it is used
4849                                  * for vlan push and set vid.
4850                                  */
4851                                 sfx_items->type = (enum rte_flow_item_type)
4852                                                   MLX5_RTE_FLOW_ITEM_TYPE_VLAN;
4853                                 sfx_items++;
4854                         }
4855                         break;
4856                 default:
4857                         break;
4858                 }
4859         }
4860         sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
4861         sfx_items++;
4862         /* Build tag actions and items for meter_id/meter flow_id. */
4863         set_tag = (struct mlx5_rte_flow_action_set_tag *)actions_pre;
4864         tag_item_spec = (struct mlx5_rte_flow_item_tag *)sfx_items;
4865         tag_item_mask = tag_item_spec + 1;
4866         /* Both flow_id and meter_id share the same register. */
4867         *set_tag = (struct mlx5_rte_flow_action_set_tag) {
4868                 .id = (enum modify_reg)mlx5_flow_get_reg_id(dev, MLX5_MTR_ID,
4869                                                             0, error),
4870                 .offset = mtr_id_offset,
4871                 .length = mtr_reg_bits,
4872                 .data = flow->meter,
4873         };
4874         /*
4875          * The color Reg bits used by flow_id are growing from
4876          * msb to lsb, so must do bit reverse for flow_id val in RegC.
4877          */
4878         for (shift = 0; shift < flow_id_bits; shift++)
4879                 flow_id_reversed = (flow_id_reversed << 1) |
4880                                 ((flow_id >> shift) & 0x1);
4881         set_tag->data |=
4882                 flow_id_reversed << (mtr_reg_bits - flow_id_bits);
4883         tag_item_spec->id = set_tag->id;
4884         tag_item_spec->data = set_tag->data << mtr_id_offset;
4885         tag_item_mask->data = UINT32_MAX << mtr_id_offset;
4886         tag_action->type = (enum rte_flow_action_type)
4887                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG;
4888         tag_action->conf = set_tag;
4889         tag_item->type = (enum rte_flow_item_type)
4890                                 MLX5_RTE_FLOW_ITEM_TYPE_TAG;
4891         tag_item->spec = tag_item_spec;
4892         tag_item->last = NULL;
4893         tag_item->mask = tag_item_mask;
4894 exit:
4895         if (mtr_flow_id)
4896                 *mtr_flow_id = tag_id;
4897         return 0;
4898 }
4899
4900 /**
4901  * Split action list having QUEUE/RSS for metadata register copy.
4902  *
4903  * Once Q/RSS action is detected in user's action list, the flow action
4904  * should be split in order to copy metadata registers, which will happen in
4905  * RX_CP_TBL like,
4906  *   - CQE->flow_tag := reg_c[1] (MARK)
4907  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
4908  * The Q/RSS action will be performed on RX_ACT_TBL after passing by RX_CP_TBL.
4909  * This is because the last action of each flow must be a terminal action
4910  * (QUEUE, RSS or DROP).
4911  *
4912  * Flow ID must be allocated to identify actions in the RX_ACT_TBL and it is
4913  * stored and kept in the mlx5_flow structure per each sub_flow.
4914  *
4915  * The Q/RSS action is replaced with,
4916  *   - SET_TAG, setting the allocated flow ID to reg_c[2].
4917  * And the following JUMP action is added at the end,
4918  *   - JUMP, to RX_CP_TBL.
4919  *
4920  * A flow to perform remained Q/RSS action will be created in RX_ACT_TBL by
4921  * flow_create_split_metadata() routine. The flow will look like,
4922  *   - If flow ID matches (reg_c[2]), perform Q/RSS.
4923  *
4924  * @param dev
4925  *   Pointer to Ethernet device.
4926  * @param[out] split_actions
4927  *   Pointer to store split actions to jump to CP_TBL.
4928  * @param[in] actions
4929  *   Pointer to the list of original flow actions.
4930  * @param[in] qrss
4931  *   Pointer to the Q/RSS action.
4932  * @param[in] actions_n
4933  *   Number of original actions.
4934  * @param[out] error
4935  *   Perform verbose error reporting if not NULL.
4936  *
4937  * @return
4938  *   non-zero unique flow_id on success, otherwise 0 and
4939  *   error/rte_error are set.
4940  */
4941 static uint32_t
4942 flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
4943                           struct rte_flow_action *split_actions,
4944                           const struct rte_flow_action *actions,
4945                           const struct rte_flow_action *qrss,
4946                           int actions_n, struct rte_flow_error *error)
4947 {
4948         struct mlx5_priv *priv = dev->data->dev_private;
4949         struct mlx5_rte_flow_action_set_tag *set_tag;
4950         struct rte_flow_action_jump *jump;
4951         const int qrss_idx = qrss - actions;
4952         uint32_t flow_id = 0;
4953         int ret = 0;
4954
4955         /*
4956          * Given actions will be split
4957          * - Replace QUEUE/RSS action with SET_TAG to set flow ID.
4958          * - Add jump to mreg CP_TBL.
4959          * As a result, there will be one more action.
4960          */
4961         ++actions_n;
4962         memcpy(split_actions, actions, sizeof(*split_actions) * actions_n);
4963         set_tag = (void *)(split_actions + actions_n);
4964         /*
4965          * If tag action is not set to void(it means we are not the meter
4966          * suffix flow), add the tag action. Since meter suffix flow already
4967          * has the tag added.
4968          */
4969         if (split_actions[qrss_idx].type != RTE_FLOW_ACTION_TYPE_VOID) {
4970                 /*
4971                  * Allocate the new subflow ID. This one is unique within
4972                  * device and not shared with representors. Otherwise,
4973                  * we would have to resolve multi-thread access synch
4974                  * issue. Each flow on the shared device is appended
4975                  * with source vport identifier, so the resulting
4976                  * flows will be unique in the shared (by master and
4977                  * representors) domain even if they have coinciding
4978                  * IDs.
4979                  */
4980                 mlx5_ipool_malloc(priv->sh->ipool
4981                                   [MLX5_IPOOL_RSS_EXPANTION_FLOW_ID], &flow_id);
4982                 if (!flow_id)
4983                         return rte_flow_error_set(error, ENOMEM,
4984                                                   RTE_FLOW_ERROR_TYPE_ACTION,
4985                                                   NULL, "can't allocate id "
4986                                                   "for split Q/RSS subflow");
4987                 /* Internal SET_TAG action to set flow ID. */
4988                 *set_tag = (struct mlx5_rte_flow_action_set_tag){
4989                         .data = flow_id,
4990                 };
4991                 ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0, error);
4992                 if (ret < 0)
4993                         return ret;
4994                 set_tag->id = ret;
4995                 /* Construct new actions array. */
4996                 /* Replace QUEUE/RSS action. */
4997                 split_actions[qrss_idx] = (struct rte_flow_action){
4998                         .type = (enum rte_flow_action_type)
4999                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG,
5000                         .conf = set_tag,
5001                 };
5002         }
5003         /* JUMP action to jump to mreg copy table (CP_TBL). */
5004         jump = (void *)(set_tag + 1);
5005         *jump = (struct rte_flow_action_jump){
5006                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
5007         };
5008         split_actions[actions_n - 2] = (struct rte_flow_action){
5009                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
5010                 .conf = jump,
5011         };
5012         split_actions[actions_n - 1] = (struct rte_flow_action){
5013                 .type = RTE_FLOW_ACTION_TYPE_END,
5014         };
5015         return flow_id;
5016 }
5017
5018 /**
5019  * Extend the given action list for Tx metadata copy.
5020  *
5021  * Copy the given action list to the ext_actions and add flow metadata register
5022  * copy action in order to copy reg_a set by WQE to reg_c[0].
5023  *
5024  * @param[out] ext_actions
5025  *   Pointer to the extended action list.
5026  * @param[in] actions
5027  *   Pointer to the list of actions.
5028  * @param[in] actions_n
5029  *   Number of actions in the list.
5030  * @param[out] error
5031  *   Perform verbose error reporting if not NULL.
5032  * @param[in] encap_idx
5033  *   The encap action inndex.
5034  *
5035  * @return
5036  *   0 on success, negative value otherwise
5037  */
5038 static int
5039 flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
5040                        struct rte_flow_action *ext_actions,
5041                        const struct rte_flow_action *actions,
5042                        int actions_n, struct rte_flow_error *error,
5043                        int encap_idx)
5044 {
5045         struct mlx5_flow_action_copy_mreg *cp_mreg =
5046                 (struct mlx5_flow_action_copy_mreg *)
5047                         (ext_actions + actions_n + 1);
5048         int ret;
5049
5050         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
5051         if (ret < 0)
5052                 return ret;
5053         cp_mreg->dst = ret;
5054         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_TX, 0, error);
5055         if (ret < 0)
5056                 return ret;
5057         cp_mreg->src = ret;
5058         if (encap_idx != 0)
5059                 memcpy(ext_actions, actions, sizeof(*ext_actions) * encap_idx);
5060         if (encap_idx == actions_n - 1) {
5061                 ext_actions[actions_n - 1] = (struct rte_flow_action){
5062                         .type = (enum rte_flow_action_type)
5063                                 MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
5064                         .conf = cp_mreg,
5065                 };
5066                 ext_actions[actions_n] = (struct rte_flow_action){
5067                         .type = RTE_FLOW_ACTION_TYPE_END,
5068                 };
5069         } else {
5070                 ext_actions[encap_idx] = (struct rte_flow_action){
5071                         .type = (enum rte_flow_action_type)
5072                                 MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
5073                         .conf = cp_mreg,
5074                 };
5075                 memcpy(ext_actions + encap_idx + 1, actions + encap_idx,
5076                                 sizeof(*ext_actions) * (actions_n - encap_idx));
5077         }
5078         return 0;
5079 }
5080
5081 /**
5082  * Check the match action from the action list.
5083  *
5084  * @param[in] actions
5085  *   Pointer to the list of actions.
5086  * @param[in] attr
5087  *   Flow rule attributes.
5088  * @param[in] action
5089  *   The action to be check if exist.
5090  * @param[out] match_action_pos
5091  *   Pointer to the position of the matched action if exists, otherwise is -1.
5092  * @param[out] qrss_action_pos
5093  *   Pointer to the position of the Queue/RSS action if exists, otherwise is -1.
5094  * @param[out] modify_after_mirror
5095  *   Pointer to the flag of modify action after FDB mirroring.
5096  *
5097  * @return
5098  *   > 0 the total number of actions.
5099  *   0 if not found match action in action list.
5100  */
5101 static int
5102 flow_check_match_action(const struct rte_flow_action actions[],
5103                         const struct rte_flow_attr *attr,
5104                         enum rte_flow_action_type action,
5105                         int *match_action_pos, int *qrss_action_pos,
5106                         int *modify_after_mirror)
5107 {
5108         const struct rte_flow_action_sample *sample;
5109         int actions_n = 0;
5110         uint32_t ratio = 0;
5111         int sub_type = 0;
5112         int flag = 0;
5113         int fdb_mirror = 0;
5114
5115         *match_action_pos = -1;
5116         *qrss_action_pos = -1;
5117         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
5118                 if (actions->type == action) {
5119                         flag = 1;
5120                         *match_action_pos = actions_n;
5121                 }
5122                 switch (actions->type) {
5123                 case RTE_FLOW_ACTION_TYPE_QUEUE:
5124                 case RTE_FLOW_ACTION_TYPE_RSS:
5125                         *qrss_action_pos = actions_n;
5126                         break;
5127                 case RTE_FLOW_ACTION_TYPE_SAMPLE:
5128                         sample = actions->conf;
5129                         ratio = sample->ratio;
5130                         sub_type = ((const struct rte_flow_action *)
5131                                         (sample->actions))->type;
5132                         if (ratio == 1 && attr->transfer)
5133                                 fdb_mirror = 1;
5134                         break;
5135                 case RTE_FLOW_ACTION_TYPE_SET_MAC_SRC:
5136                 case RTE_FLOW_ACTION_TYPE_SET_MAC_DST:
5137                 case RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC:
5138                 case RTE_FLOW_ACTION_TYPE_SET_IPV4_DST:
5139                 case RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC:
5140                 case RTE_FLOW_ACTION_TYPE_SET_IPV6_DST:
5141                 case RTE_FLOW_ACTION_TYPE_SET_TP_SRC:
5142                 case RTE_FLOW_ACTION_TYPE_SET_TP_DST:
5143                 case RTE_FLOW_ACTION_TYPE_DEC_TTL:
5144                 case RTE_FLOW_ACTION_TYPE_SET_TTL:
5145                 case RTE_FLOW_ACTION_TYPE_INC_TCP_SEQ:
5146                 case RTE_FLOW_ACTION_TYPE_DEC_TCP_SEQ:
5147                 case RTE_FLOW_ACTION_TYPE_INC_TCP_ACK:
5148                 case RTE_FLOW_ACTION_TYPE_DEC_TCP_ACK:
5149                 case RTE_FLOW_ACTION_TYPE_SET_IPV4_DSCP:
5150                 case RTE_FLOW_ACTION_TYPE_SET_IPV6_DSCP:
5151                 case RTE_FLOW_ACTION_TYPE_FLAG:
5152                 case RTE_FLOW_ACTION_TYPE_MARK:
5153                 case RTE_FLOW_ACTION_TYPE_SET_META:
5154                 case RTE_FLOW_ACTION_TYPE_SET_TAG:
5155                 case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
5156                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
5157                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
5158                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
5159                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
5160                 case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
5161                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
5162                 case RTE_FLOW_ACTION_TYPE_MODIFY_FIELD:
5163                 case RTE_FLOW_ACTION_TYPE_METER:
5164                         if (fdb_mirror)
5165                                 *modify_after_mirror = 1;
5166                         break;
5167                 default:
5168                         break;
5169                 }
5170                 actions_n++;
5171         }
5172         if (flag && fdb_mirror && !*modify_after_mirror) {
5173                 /* FDB mirroring uses the destination array to implement
5174                  * instead of FLOW_SAMPLER object.
5175                  */
5176                 if (sub_type != RTE_FLOW_ACTION_TYPE_END)
5177                         flag = 0;
5178         }
5179         /* Count RTE_FLOW_ACTION_TYPE_END. */
5180         return flag ? actions_n + 1 : 0;
5181 }
5182
5183 #define SAMPLE_SUFFIX_ITEM 2
5184
5185 /**
5186  * Split the sample flow.
5187  *
5188  * As sample flow will split to two sub flow, sample flow with
5189  * sample action, the other actions will move to new suffix flow.
5190  *
5191  * Also add unique tag id with tag action in the sample flow,
5192  * the same tag id will be as match in the suffix flow.
5193  *
5194  * @param dev
5195  *   Pointer to Ethernet device.
5196  * @param[in] add_tag
5197  *   Add extra tag action flag.
5198  * @param[out] sfx_items
5199  *   Suffix flow match items (list terminated by the END pattern item).
5200  * @param[in] actions
5201  *   Associated actions (list terminated by the END action).
5202  * @param[out] actions_sfx
5203  *   Suffix flow actions.
5204  * @param[out] actions_pre
5205  *   Prefix flow actions.
5206  * @param[in] actions_n
5207  *  The total number of actions.
5208  * @param[in] sample_action_pos
5209  *   The sample action position.
5210  * @param[in] qrss_action_pos
5211  *   The Queue/RSS action position.
5212  * @param[in] jump_table
5213  *   Add extra jump action flag.
5214  * @param[out] error
5215  *   Perform verbose error reporting if not NULL.
5216  *
5217  * @return
5218  *   0 on success, or unique flow_id, a negative errno value
5219  *   otherwise and rte_errno is set.
5220  */
5221 static int
5222 flow_sample_split_prep(struct rte_eth_dev *dev,
5223                        int add_tag,
5224                        struct rte_flow_item sfx_items[],
5225                        const struct rte_flow_action actions[],
5226                        struct rte_flow_action actions_sfx[],
5227                        struct rte_flow_action actions_pre[],
5228                        int actions_n,
5229                        int sample_action_pos,
5230                        int qrss_action_pos,
5231                        int jump_table,
5232                        struct rte_flow_error *error)
5233 {
5234         struct mlx5_priv *priv = dev->data->dev_private;
5235         struct mlx5_rte_flow_action_set_tag *set_tag;
5236         struct mlx5_rte_flow_item_tag *tag_spec;
5237         struct mlx5_rte_flow_item_tag *tag_mask;
5238         struct rte_flow_action_jump *jump_action;
5239         uint32_t tag_id = 0;
5240         int index;
5241         int append_index = 0;
5242         int ret;
5243
5244         if (sample_action_pos < 0)
5245                 return rte_flow_error_set(error, EINVAL,
5246                                           RTE_FLOW_ERROR_TYPE_ACTION,
5247                                           NULL, "invalid position of sample "
5248                                           "action in list");
5249         /* Prepare the actions for prefix and suffix flow. */
5250         if (qrss_action_pos >= 0 && qrss_action_pos < sample_action_pos) {
5251                 index = qrss_action_pos;
5252                 /* Put the preceding the Queue/RSS action into prefix flow. */
5253                 if (index != 0)
5254                         memcpy(actions_pre, actions,
5255                                sizeof(struct rte_flow_action) * index);
5256                 /* Put others preceding the sample action into prefix flow. */
5257                 if (sample_action_pos > index + 1)
5258                         memcpy(actions_pre + index, actions + index + 1,
5259                                sizeof(struct rte_flow_action) *
5260                                (sample_action_pos - index - 1));
5261                 index = sample_action_pos - 1;
5262                 /* Put Queue/RSS action into Suffix flow. */
5263                 memcpy(actions_sfx, actions + qrss_action_pos,
5264                        sizeof(struct rte_flow_action));
5265                 actions_sfx++;
5266         } else {
5267                 index = sample_action_pos;
5268                 if (index != 0)
5269                         memcpy(actions_pre, actions,
5270                                sizeof(struct rte_flow_action) * index);
5271         }
5272         /* For CX5, add an extra tag action for NIC-RX and E-Switch ingress.
5273          * For CX6DX and above, metadata registers Cx preserve their value,
5274          * add an extra tag action for NIC-RX and E-Switch Domain.
5275          */
5276         if (add_tag) {
5277                 /* Prepare the prefix tag action. */
5278                 append_index++;
5279                 set_tag = (void *)(actions_pre + actions_n + append_index);
5280                 ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, 0, error);
5281                 if (ret < 0)
5282                         return ret;
5283                 mlx5_ipool_malloc(priv->sh->ipool
5284                                   [MLX5_IPOOL_RSS_EXPANTION_FLOW_ID], &tag_id);
5285                 *set_tag = (struct mlx5_rte_flow_action_set_tag) {
5286                         .id = ret,
5287                         .data = tag_id,
5288                 };
5289                 /* Prepare the suffix subflow items. */
5290                 tag_spec = (void *)(sfx_items + SAMPLE_SUFFIX_ITEM);
5291                 tag_spec->data = tag_id;
5292                 tag_spec->id = set_tag->id;
5293                 tag_mask = tag_spec + 1;
5294                 tag_mask->data = UINT32_MAX;
5295                 sfx_items[0] = (struct rte_flow_item){
5296                         .type = (enum rte_flow_item_type)
5297                                 MLX5_RTE_FLOW_ITEM_TYPE_TAG,
5298                         .spec = tag_spec,
5299                         .last = NULL,
5300                         .mask = tag_mask,
5301                 };
5302                 sfx_items[1] = (struct rte_flow_item){
5303                         .type = (enum rte_flow_item_type)
5304                                 RTE_FLOW_ITEM_TYPE_END,
5305                 };
5306                 /* Prepare the tag action in prefix subflow. */
5307                 actions_pre[index++] =
5308                         (struct rte_flow_action){
5309                         .type = (enum rte_flow_action_type)
5310                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG,
5311                         .conf = set_tag,
5312                 };
5313         }
5314         memcpy(actions_pre + index, actions + sample_action_pos,
5315                sizeof(struct rte_flow_action));
5316         index += 1;
5317         /* For the modify action after the sample action in E-Switch mirroring,
5318          * Add the extra jump action in prefix subflow and jump into the next
5319          * table, then do the modify action in the new table.
5320          */
5321         if (jump_table) {
5322                 /* Prepare the prefix jump action. */
5323                 append_index++;
5324                 jump_action = (void *)(actions_pre + actions_n + append_index);
5325                 jump_action->group = jump_table;
5326                 actions_pre[index++] =
5327                         (struct rte_flow_action){
5328                         .type = (enum rte_flow_action_type)
5329                                 RTE_FLOW_ACTION_TYPE_JUMP,
5330                         .conf = jump_action,
5331                 };
5332         }
5333         actions_pre[index] = (struct rte_flow_action){
5334                 .type = (enum rte_flow_action_type)
5335                         RTE_FLOW_ACTION_TYPE_END,
5336         };
5337         /* Put the actions after sample into Suffix flow. */
5338         memcpy(actions_sfx, actions + sample_action_pos + 1,
5339                sizeof(struct rte_flow_action) *
5340                (actions_n - sample_action_pos - 1));
5341         return tag_id;
5342 }
5343
5344 /**
5345  * The splitting for metadata feature.
5346  *
5347  * - Q/RSS action on NIC Rx should be split in order to pass by
5348  *   the mreg copy table (RX_CP_TBL) and then it jumps to the
5349  *   action table (RX_ACT_TBL) which has the split Q/RSS action.
5350  *
5351  * - All the actions on NIC Tx should have a mreg copy action to
5352  *   copy reg_a from WQE to reg_c[0].
5353  *
5354  * @param dev
5355  *   Pointer to Ethernet device.
5356  * @param[in] flow
5357  *   Parent flow structure pointer.
5358  * @param[in] attr
5359  *   Flow rule attributes.
5360  * @param[in] items
5361  *   Pattern specification (list terminated by the END pattern item).
5362  * @param[in] actions
5363  *   Associated actions (list terminated by the END action).
5364  * @param[in] flow_split_info
5365  *   Pointer to flow split info structure.
5366  * @param[out] error
5367  *   Perform verbose error reporting if not NULL.
5368  * @return
5369  *   0 on success, negative value otherwise
5370  */
5371 static int
5372 flow_create_split_metadata(struct rte_eth_dev *dev,
5373                            struct rte_flow *flow,
5374                            const struct rte_flow_attr *attr,
5375                            const struct rte_flow_item items[],
5376                            const struct rte_flow_action actions[],
5377                            struct mlx5_flow_split_info *flow_split_info,
5378                            struct rte_flow_error *error)
5379 {
5380         struct mlx5_priv *priv = dev->data->dev_private;
5381         struct mlx5_dev_config *config = &priv->config;
5382         const struct rte_flow_action *qrss = NULL;
5383         struct rte_flow_action *ext_actions = NULL;
5384         struct mlx5_flow *dev_flow = NULL;
5385         uint32_t qrss_id = 0;
5386         int mtr_sfx = 0;
5387         size_t act_size;
5388         int actions_n;
5389         int encap_idx;
5390         int ret;
5391
5392         /* Check whether extensive metadata feature is engaged. */
5393         if (!config->dv_flow_en ||
5394             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
5395             !mlx5_flow_ext_mreg_supported(dev))
5396                 return flow_create_split_inner(dev, flow, NULL, attr, items,
5397                                                actions, flow_split_info, error);
5398         actions_n = flow_parse_metadata_split_actions_info(actions, &qrss,
5399                                                            &encap_idx);
5400         if (qrss) {
5401                 /* Exclude hairpin flows from splitting. */
5402                 if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
5403                         const struct rte_flow_action_queue *queue;
5404
5405                         queue = qrss->conf;
5406                         if (mlx5_rxq_get_type(dev, queue->index) ==
5407                             MLX5_RXQ_TYPE_HAIRPIN)
5408                                 qrss = NULL;
5409                 } else if (qrss->type == RTE_FLOW_ACTION_TYPE_RSS) {
5410                         const struct rte_flow_action_rss *rss;
5411
5412                         rss = qrss->conf;
5413                         if (mlx5_rxq_get_type(dev, rss->queue[0]) ==
5414                             MLX5_RXQ_TYPE_HAIRPIN)
5415                                 qrss = NULL;
5416                 }
5417         }
5418         if (qrss) {
5419                 /* Check if it is in meter suffix table. */
5420                 mtr_sfx = attr->group == (attr->transfer ?
5421                           (MLX5_FLOW_TABLE_LEVEL_METER - 1) :
5422                           MLX5_FLOW_TABLE_LEVEL_METER);
5423                 /*
5424                  * Q/RSS action on NIC Rx should be split in order to pass by
5425                  * the mreg copy table (RX_CP_TBL) and then it jumps to the
5426                  * action table (RX_ACT_TBL) which has the split Q/RSS action.
5427                  */
5428                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
5429                            sizeof(struct rte_flow_action_set_tag) +
5430                            sizeof(struct rte_flow_action_jump);
5431                 ext_actions = mlx5_malloc(MLX5_MEM_ZERO, act_size, 0,
5432                                           SOCKET_ID_ANY);
5433                 if (!ext_actions)
5434                         return rte_flow_error_set(error, ENOMEM,
5435                                                   RTE_FLOW_ERROR_TYPE_ACTION,
5436                                                   NULL, "no memory to split "
5437                                                   "metadata flow");
5438                 /*
5439                  * If we are the suffix flow of meter, tag already exist.
5440                  * Set the tag action to void.
5441                  */
5442                 if (mtr_sfx)
5443                         ext_actions[qrss - actions].type =
5444                                                 RTE_FLOW_ACTION_TYPE_VOID;
5445                 else
5446                         ext_actions[qrss - actions].type =
5447                                                 (enum rte_flow_action_type)
5448                                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG;
5449                 /*
5450                  * Create the new actions list with removed Q/RSS action
5451                  * and appended set tag and jump to register copy table
5452                  * (RX_CP_TBL). We should preallocate unique tag ID here
5453                  * in advance, because it is needed for set tag action.
5454                  */
5455                 qrss_id = flow_mreg_split_qrss_prep(dev, ext_actions, actions,
5456                                                     qrss, actions_n, error);
5457                 if (!mtr_sfx && !qrss_id) {
5458                         ret = -rte_errno;
5459                         goto exit;
5460                 }
5461         } else if (attr->egress && !attr->transfer) {
5462                 /*
5463                  * All the actions on NIC Tx should have a metadata register
5464                  * copy action to copy reg_a from WQE to reg_c[meta]
5465                  */
5466                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
5467                            sizeof(struct mlx5_flow_action_copy_mreg);
5468                 ext_actions = mlx5_malloc(MLX5_MEM_ZERO, act_size, 0,
5469                                           SOCKET_ID_ANY);
5470                 if (!ext_actions)
5471                         return rte_flow_error_set(error, ENOMEM,
5472                                                   RTE_FLOW_ERROR_TYPE_ACTION,
5473                                                   NULL, "no memory to split "
5474                                                   "metadata flow");
5475                 /* Create the action list appended with copy register. */
5476                 ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
5477                                              actions_n, error, encap_idx);
5478                 if (ret < 0)
5479                         goto exit;
5480         }
5481         /* Add the unmodified original or prefix subflow. */
5482         ret = flow_create_split_inner(dev, flow, &dev_flow, attr,
5483                                       items, ext_actions ? ext_actions :
5484                                       actions, flow_split_info, error);
5485         if (ret < 0)
5486                 goto exit;
5487         MLX5_ASSERT(dev_flow);
5488         if (qrss) {
5489                 const struct rte_flow_attr q_attr = {
5490                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
5491                         .ingress = 1,
5492                 };
5493                 /* Internal PMD action to set register. */
5494                 struct mlx5_rte_flow_item_tag q_tag_spec = {
5495                         .data = qrss_id,
5496                         .id = REG_NON,
5497                 };
5498                 struct rte_flow_item q_items[] = {
5499                         {
5500                                 .type = (enum rte_flow_item_type)
5501                                         MLX5_RTE_FLOW_ITEM_TYPE_TAG,
5502                                 .spec = &q_tag_spec,
5503                                 .last = NULL,
5504                                 .mask = NULL,
5505                         },
5506                         {
5507                                 .type = RTE_FLOW_ITEM_TYPE_END,
5508                         },
5509                 };
5510                 struct rte_flow_action q_actions[] = {
5511                         {
5512                                 .type = qrss->type,
5513                                 .conf = qrss->conf,
5514                         },
5515                         {
5516                                 .type = RTE_FLOW_ACTION_TYPE_END,
5517                         },
5518                 };
5519                 uint64_t layers = flow_get_prefix_layer_flags(dev_flow);
5520
5521                 /*
5522                  * Configure the tag item only if there is no meter subflow.
5523                  * Since tag is already marked in the meter suffix subflow
5524                  * we can just use the meter suffix items as is.
5525                  */
5526                 if (qrss_id) {
5527                         /* Not meter subflow. */
5528                         MLX5_ASSERT(!mtr_sfx);
5529                         /*
5530                          * Put unique id in prefix flow due to it is destroyed
5531                          * after suffix flow and id will be freed after there
5532                          * is no actual flows with this id and identifier
5533                          * reallocation becomes possible (for example, for
5534                          * other flows in other threads).
5535                          */
5536                         dev_flow->handle->split_flow_id = qrss_id;
5537                         ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0,
5538                                                    error);
5539                         if (ret < 0)
5540                                 goto exit;
5541                         q_tag_spec.id = ret;
5542                 }
5543                 dev_flow = NULL;
5544                 /* Add suffix subflow to execute Q/RSS. */
5545                 flow_split_info->prefix_layers = layers;
5546                 flow_split_info->prefix_mark = 0;
5547                 ret = flow_create_split_inner(dev, flow, &dev_flow,
5548                                               &q_attr, mtr_sfx ? items :
5549                                               q_items, q_actions,
5550                                               flow_split_info, error);
5551                 if (ret < 0)
5552                         goto exit;
5553                 /* qrss ID should be freed if failed. */
5554                 qrss_id = 0;
5555                 MLX5_ASSERT(dev_flow);
5556         }
5557
5558 exit:
5559         /*
5560          * We do not destroy the partially created sub_flows in case of error.
5561          * These ones are included into parent flow list and will be destroyed
5562          * by flow_drv_destroy.
5563          */
5564         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_RSS_EXPANTION_FLOW_ID],
5565                         qrss_id);
5566         mlx5_free(ext_actions);
5567         return ret;
5568 }
5569
5570 /**
5571  * Create meter internal drop flow with the original pattern.
5572  *
5573  * @param dev
5574  *   Pointer to Ethernet device.
5575  * @param[in] flow
5576  *   Parent flow structure pointer.
5577  * @param[in] attr
5578  *   Flow rule attributes.
5579  * @param[in] items
5580  *   Pattern specification (list terminated by the END pattern item).
5581  * @param[in] flow_split_info
5582  *   Pointer to flow split info structure.
5583  * @param[in] fm
5584  *   Pointer to flow meter structure.
5585  * @param[out] error
5586  *   Perform verbose error reporting if not NULL.
5587  * @return
5588  *   0 on success, negative value otherwise
5589  */
5590 static uint32_t
5591 flow_meter_create_drop_flow_with_org_pattern(struct rte_eth_dev *dev,
5592                         struct rte_flow *flow,
5593                         const struct rte_flow_attr *attr,
5594                         const struct rte_flow_item items[],
5595                         struct mlx5_flow_split_info *flow_split_info,
5596                         struct mlx5_flow_meter_info *fm,
5597                         struct rte_flow_error *error)
5598 {
5599         struct mlx5_flow *dev_flow = NULL;
5600         struct rte_flow_attr drop_attr = *attr;
5601         struct rte_flow_action drop_actions[3];
5602         struct mlx5_flow_split_info drop_split_info = *flow_split_info;
5603
5604         MLX5_ASSERT(fm->drop_cnt);
5605         drop_actions[0].type =
5606                 (enum rte_flow_action_type)MLX5_RTE_FLOW_ACTION_TYPE_COUNT;
5607         drop_actions[0].conf = (void *)(uintptr_t)fm->drop_cnt;
5608         drop_actions[1].type = RTE_FLOW_ACTION_TYPE_DROP;
5609         drop_actions[1].conf = NULL;
5610         drop_actions[2].type = RTE_FLOW_ACTION_TYPE_END;
5611         drop_actions[2].conf = NULL;
5612         drop_split_info.external = false;
5613         drop_split_info.skip_scale |= 1 << MLX5_SCALE_FLOW_GROUP_BIT;
5614         drop_split_info.table_id = MLX5_MTR_TABLE_ID_DROP;
5615         drop_attr.group = MLX5_FLOW_TABLE_LEVEL_METER;
5616         return flow_create_split_inner(dev, flow, &dev_flow,
5617                                 &drop_attr, items, drop_actions,
5618                                 &drop_split_info, error);
5619 }
5620
5621 /**
5622  * The splitting for meter feature.
5623  *
5624  * - The meter flow will be split to two flows as prefix and
5625  *   suffix flow. The packets make sense only it pass the prefix
5626  *   meter action.
5627  *
5628  * - Reg_C_5 is used for the packet to match betweend prefix and
5629  *   suffix flow.
5630  *
5631  * @param dev
5632  *   Pointer to Ethernet device.
5633  * @param[in] flow
5634  *   Parent flow structure pointer.
5635  * @param[in] attr
5636  *   Flow rule attributes.
5637  * @param[in] items
5638  *   Pattern specification (list terminated by the END pattern item).
5639  * @param[in] actions
5640  *   Associated actions (list terminated by the END action).
5641  * @param[in] flow_split_info
5642  *   Pointer to flow split info structure.
5643  * @param[out] error
5644  *   Perform verbose error reporting if not NULL.
5645  * @return
5646  *   0 on success, negative value otherwise
5647  */
5648 static int
5649 flow_create_split_meter(struct rte_eth_dev *dev,
5650                         struct rte_flow *flow,
5651                         const struct rte_flow_attr *attr,
5652                         const struct rte_flow_item items[],
5653                         const struct rte_flow_action actions[],
5654                         struct mlx5_flow_split_info *flow_split_info,
5655                         struct rte_flow_error *error)
5656 {
5657         struct mlx5_priv *priv = dev->data->dev_private;
5658         struct mlx5_flow_workspace *wks = mlx5_flow_get_thread_workspace();
5659         struct rte_flow_action *sfx_actions = NULL;
5660         struct rte_flow_action *pre_actions = NULL;
5661         struct rte_flow_item *sfx_items = NULL;
5662         struct mlx5_flow *dev_flow = NULL;
5663         struct rte_flow_attr sfx_attr = *attr;
5664         struct mlx5_flow_meter_info *fm = NULL;
5665         uint8_t skip_scale_restore;
5666         bool has_mtr = false;
5667         bool has_modify = false;
5668         bool set_mtr_reg = true;
5669         uint32_t meter_id = 0;
5670         uint32_t mtr_idx = 0;
5671         uint32_t mtr_flow_id = 0;
5672         size_t act_size;
5673         size_t item_size;
5674         int actions_n = 0;
5675         int ret = 0;
5676
5677         if (priv->mtr_en)
5678                 actions_n = flow_check_meter_action(dev, actions, &has_mtr,
5679                                                     &has_modify, &meter_id);
5680         if (has_mtr) {
5681                 if (flow->meter) {
5682                         fm = flow_dv_meter_find_by_idx(priv, flow->meter);
5683                         if (!fm)
5684                                 return rte_flow_error_set(error, EINVAL,
5685                                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
5686                                                 NULL, "Meter not found.");
5687                 } else {
5688                         fm = mlx5_flow_meter_find(priv, meter_id, &mtr_idx);
5689                         if (!fm)
5690                                 return rte_flow_error_set(error, EINVAL,
5691                                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
5692                                                 NULL, "Meter not found.");
5693                         ret = mlx5_flow_meter_attach(priv, fm,
5694                                                      &sfx_attr, error);
5695                         if (ret)
5696                                 return -rte_errno;
5697                         flow->meter = mtr_idx;
5698                 }
5699                 MLX5_ASSERT(wks);
5700                 wks->fm = fm;
5701                 /*
5702                  * If it isn't default-policy Meter, and
5703                  * 1. There's no action in flow to change
5704                  *    packet (modify/encap/decap etc.), OR
5705                  * 2. No drop count needed for this meter.
5706                  * no need to use regC to save meter id anymore.
5707                  */
5708                 if (!fm->def_policy && (!has_modify || !fm->drop_cnt))
5709                         set_mtr_reg = false;
5710                 /* Prefix actions: meter, decap, encap, tag, jump, end. */
5711                 act_size = sizeof(struct rte_flow_action) * (actions_n + 6) +
5712                            sizeof(struct mlx5_rte_flow_action_set_tag);
5713                 /* Suffix items: tag, vlan, port id, end. */
5714 #define METER_SUFFIX_ITEM 4
5715                 item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
5716                             sizeof(struct mlx5_rte_flow_item_tag) * 2;
5717                 sfx_actions = mlx5_malloc(MLX5_MEM_ZERO, (act_size + item_size),
5718                                           0, SOCKET_ID_ANY);
5719                 if (!sfx_actions)
5720                         return rte_flow_error_set(error, ENOMEM,
5721                                                   RTE_FLOW_ERROR_TYPE_ACTION,
5722                                                   NULL, "no memory to split "
5723                                                   "meter flow");
5724                 sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
5725                              act_size);
5726                 /* There's no suffix flow for meter of non-default policy. */
5727                 if (!fm->def_policy)
5728                         pre_actions = sfx_actions + 1;
5729                 else
5730                         pre_actions = sfx_actions + actions_n;
5731                 ret = flow_meter_split_prep(dev, flow, fm, &sfx_attr,
5732                                             items, sfx_items, actions,
5733                                             sfx_actions, pre_actions,
5734                                             (set_mtr_reg ? &mtr_flow_id : NULL),
5735                                             error);
5736                 if (ret) {
5737                         ret = -rte_errno;
5738                         goto exit;
5739                 }
5740                 /* Add the prefix subflow. */
5741                 flow_split_info->prefix_mark = 0;
5742                 skip_scale_restore = flow_split_info->skip_scale;
5743                 flow_split_info->skip_scale |=
5744                         1 << MLX5_SCALE_JUMP_FLOW_GROUP_BIT;
5745                 ret = flow_create_split_inner(dev, flow, &dev_flow,
5746                                               attr, items, pre_actions,
5747                                               flow_split_info, error);
5748                 flow_split_info->skip_scale = skip_scale_restore;
5749                 if (ret) {
5750                         if (mtr_flow_id)
5751                                 mlx5_ipool_free(fm->flow_ipool, mtr_flow_id);
5752                         ret = -rte_errno;
5753                         goto exit;
5754                 }
5755                 if (mtr_flow_id) {
5756                         dev_flow->handle->split_flow_id = mtr_flow_id;
5757                         dev_flow->handle->is_meter_flow_id = 1;
5758                 }
5759                 if (!fm->def_policy) {
5760                         if (!set_mtr_reg && fm->drop_cnt)
5761                                 ret =
5762                         flow_meter_create_drop_flow_with_org_pattern(dev, flow,
5763                                                         &sfx_attr, items,
5764                                                         flow_split_info,
5765                                                         fm, error);
5766                         goto exit;
5767                 }
5768                 /* Setting the sfx group atrr. */
5769                 sfx_attr.group = sfx_attr.transfer ?
5770                                 (MLX5_FLOW_TABLE_LEVEL_METER - 1) :
5771                                  MLX5_FLOW_TABLE_LEVEL_METER;
5772                 flow_split_info->prefix_layers =
5773                                 flow_get_prefix_layer_flags(dev_flow);
5774                 flow_split_info->prefix_mark = dev_flow->handle->mark;
5775                 flow_split_info->table_id = MLX5_MTR_TABLE_ID_SUFFIX;
5776         }
5777         /* Add the prefix subflow. */
5778         ret = flow_create_split_metadata(dev, flow,
5779                                          &sfx_attr, sfx_items ?
5780                                          sfx_items : items,
5781                                          sfx_actions ? sfx_actions : actions,
5782                                          flow_split_info, error);
5783 exit:
5784         if (sfx_actions)
5785                 mlx5_free(sfx_actions);
5786         return ret;
5787 }
5788
5789 /**
5790  * The splitting for sample feature.
5791  *
5792  * Once Sample action is detected in the action list, the flow actions should
5793  * be split into prefix sub flow and suffix sub flow.
5794  *
5795  * The original items remain in the prefix sub flow, all actions preceding the
5796  * sample action and the sample action itself will be copied to the prefix
5797  * sub flow, the actions following the sample action will be copied to the
5798  * suffix sub flow, Queue action always be located in the suffix sub flow.
5799  *
5800  * In order to make the packet from prefix sub flow matches with suffix sub
5801  * flow, an extra tag action be added into prefix sub flow, and the suffix sub
5802  * flow uses tag item with the unique flow id.
5803  *
5804  * @param dev
5805  *   Pointer to Ethernet device.
5806  * @param[in] flow
5807  *   Parent flow structure pointer.
5808  * @param[in] attr
5809  *   Flow rule attributes.
5810  * @param[in] items
5811  *   Pattern specification (list terminated by the END pattern item).
5812  * @param[in] actions
5813  *   Associated actions (list terminated by the END action).
5814  * @param[in] flow_split_info
5815  *   Pointer to flow split info structure.
5816  * @param[out] error
5817  *   Perform verbose error reporting if not NULL.
5818  * @return
5819  *   0 on success, negative value otherwise
5820  */
5821 static int
5822 flow_create_split_sample(struct rte_eth_dev *dev,
5823                          struct rte_flow *flow,
5824                          const struct rte_flow_attr *attr,
5825                          const struct rte_flow_item items[],
5826                          const struct rte_flow_action actions[],
5827                          struct mlx5_flow_split_info *flow_split_info,
5828                          struct rte_flow_error *error)
5829 {
5830         struct mlx5_priv *priv = dev->data->dev_private;
5831         struct rte_flow_action *sfx_actions = NULL;
5832         struct rte_flow_action *pre_actions = NULL;
5833         struct rte_flow_item *sfx_items = NULL;
5834         struct mlx5_flow *dev_flow = NULL;
5835         struct rte_flow_attr sfx_attr = *attr;
5836 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
5837         struct mlx5_flow_dv_sample_resource *sample_res;
5838         struct mlx5_flow_tbl_data_entry *sfx_tbl_data;
5839         struct mlx5_flow_tbl_resource *sfx_tbl;
5840 #endif
5841         size_t act_size;
5842         size_t item_size;
5843         uint32_t fdb_tx = 0;
5844         int32_t tag_id = 0;
5845         int actions_n = 0;
5846         int sample_action_pos;
5847         int qrss_action_pos;
5848         int add_tag = 0;
5849         int modify_after_mirror = 0;
5850         uint16_t jump_table = 0;
5851         const uint32_t next_ft_step = 1;
5852         int ret = 0;
5853
5854         if (priv->sampler_en)
5855                 actions_n = flow_check_match_action(actions, attr,
5856                                         RTE_FLOW_ACTION_TYPE_SAMPLE,
5857                                         &sample_action_pos, &qrss_action_pos,
5858                                         &modify_after_mirror);
5859         if (actions_n) {
5860                 /* The prefix actions must includes sample, tag, end. */
5861                 act_size = sizeof(struct rte_flow_action) * (actions_n * 2 + 1)
5862                            + sizeof(struct mlx5_rte_flow_action_set_tag);
5863                 item_size = sizeof(struct rte_flow_item) * SAMPLE_SUFFIX_ITEM +
5864                             sizeof(struct mlx5_rte_flow_item_tag) * 2;
5865                 sfx_actions = mlx5_malloc(MLX5_MEM_ZERO, (act_size +
5866                                           item_size), 0, SOCKET_ID_ANY);
5867                 if (!sfx_actions)
5868                         return rte_flow_error_set(error, ENOMEM,
5869                                                   RTE_FLOW_ERROR_TYPE_ACTION,
5870                                                   NULL, "no memory to split "
5871                                                   "sample flow");
5872                 /* The representor_id is -1 for uplink. */
5873                 fdb_tx = (attr->transfer && priv->representor_id != -1);
5874                 /*
5875                  * When reg_c_preserve is set, metadata registers Cx preserve
5876                  * their value even through packet duplication.
5877                  */
5878                 add_tag = (!fdb_tx || priv->config.hca_attr.reg_c_preserve);
5879                 if (add_tag)
5880                         sfx_items = (struct rte_flow_item *)((char *)sfx_actions
5881                                         + act_size);
5882                 if (modify_after_mirror)
5883                         jump_table = attr->group * MLX5_FLOW_TABLE_FACTOR +
5884                                      next_ft_step;
5885                 pre_actions = sfx_actions + actions_n;
5886                 tag_id = flow_sample_split_prep(dev, add_tag, sfx_items,
5887                                                 actions, sfx_actions,
5888                                                 pre_actions, actions_n,
5889                                                 sample_action_pos,
5890                                                 qrss_action_pos, jump_table,
5891                                                 error);
5892                 if (tag_id < 0 || (add_tag && !tag_id)) {
5893                         ret = -rte_errno;
5894                         goto exit;
5895                 }
5896                 if (modify_after_mirror)
5897                         flow_split_info->skip_scale =
5898                                         1 << MLX5_SCALE_JUMP_FLOW_GROUP_BIT;
5899                 /* Add the prefix subflow. */
5900                 ret = flow_create_split_inner(dev, flow, &dev_flow, attr,
5901                                               items, pre_actions,
5902                                               flow_split_info, error);
5903                 if (ret) {
5904                         ret = -rte_errno;
5905                         goto exit;
5906                 }
5907                 dev_flow->handle->split_flow_id = tag_id;
5908 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
5909                 if (!modify_after_mirror) {
5910                         /* Set the sfx group attr. */
5911                         sample_res = (struct mlx5_flow_dv_sample_resource *)
5912                                                 dev_flow->dv.sample_res;
5913                         sfx_tbl = (struct mlx5_flow_tbl_resource *)
5914                                                 sample_res->normal_path_tbl;
5915                         sfx_tbl_data = container_of(sfx_tbl,
5916                                                 struct mlx5_flow_tbl_data_entry,
5917                                                 tbl);
5918                         sfx_attr.group = sfx_attr.transfer ?
5919                         (sfx_tbl_data->level - 1) : sfx_tbl_data->level;
5920                 } else {
5921                         MLX5_ASSERT(attr->transfer);
5922                         sfx_attr.group = jump_table;
5923                 }
5924                 flow_split_info->prefix_layers =
5925                                 flow_get_prefix_layer_flags(dev_flow);
5926                 flow_split_info->prefix_mark = dev_flow->handle->mark;
5927                 /* Suffix group level already be scaled with factor, set
5928                  * MLX5_SCALE_FLOW_GROUP_BIT of skip_scale to 1 to avoid scale
5929                  * again in translation.
5930                  */
5931                 flow_split_info->skip_scale = 1 << MLX5_SCALE_FLOW_GROUP_BIT;
5932 #endif
5933         }
5934         /* Add the suffix subflow. */
5935         ret = flow_create_split_meter(dev, flow, &sfx_attr,
5936                                       sfx_items ? sfx_items : items,
5937                                       sfx_actions ? sfx_actions : actions,
5938                                       flow_split_info, error);
5939 exit:
5940         if (sfx_actions)
5941                 mlx5_free(sfx_actions);
5942         return ret;
5943 }
5944
5945 /**
5946  * Split the flow to subflow set. The splitters might be linked
5947  * in the chain, like this:
5948  * flow_create_split_outer() calls:
5949  *   flow_create_split_meter() calls:
5950  *     flow_create_split_metadata(meter_subflow_0) calls:
5951  *       flow_create_split_inner(metadata_subflow_0)
5952  *       flow_create_split_inner(metadata_subflow_1)
5953  *       flow_create_split_inner(metadata_subflow_2)
5954  *     flow_create_split_metadata(meter_subflow_1) calls:
5955  *       flow_create_split_inner(metadata_subflow_0)
5956  *       flow_create_split_inner(metadata_subflow_1)
5957  *       flow_create_split_inner(metadata_subflow_2)
5958  *
5959  * This provide flexible way to add new levels of flow splitting.
5960  * The all of successfully created subflows are included to the
5961  * parent flow dev_flow list.
5962  *
5963  * @param dev
5964  *   Pointer to Ethernet device.
5965  * @param[in] flow
5966  *   Parent flow structure pointer.
5967  * @param[in] attr
5968  *   Flow rule attributes.
5969  * @param[in] items
5970  *   Pattern specification (list terminated by the END pattern item).
5971  * @param[in] actions
5972  *   Associated actions (list terminated by the END action).
5973  * @param[in] flow_split_info
5974  *   Pointer to flow split info structure.
5975  * @param[out] error
5976  *   Perform verbose error reporting if not NULL.
5977  * @return
5978  *   0 on success, negative value otherwise
5979  */
5980 static int
5981 flow_create_split_outer(struct rte_eth_dev *dev,
5982                         struct rte_flow *flow,
5983                         const struct rte_flow_attr *attr,
5984                         const struct rte_flow_item items[],
5985                         const struct rte_flow_action actions[],
5986                         struct mlx5_flow_split_info *flow_split_info,
5987                         struct rte_flow_error *error)
5988 {
5989         int ret;
5990
5991         ret = flow_create_split_sample(dev, flow, attr, items,
5992                                        actions, flow_split_info, error);
5993         MLX5_ASSERT(ret <= 0);
5994         return ret;
5995 }
5996
5997 static inline struct mlx5_flow_tunnel *
5998 flow_tunnel_from_rule(const struct mlx5_flow *flow)
5999 {
6000         struct mlx5_flow_tunnel *tunnel;
6001
6002 #pragma GCC diagnostic push
6003 #pragma GCC diagnostic ignored "-Wcast-qual"
6004         tunnel = (typeof(tunnel))flow->tunnel;
6005 #pragma GCC diagnostic pop
6006
6007         return tunnel;
6008 }
6009
6010 /**
6011  * Adjust flow RSS workspace if needed.
6012  *
6013  * @param wks
6014  *   Pointer to thread flow work space.
6015  * @param rss_desc
6016  *   Pointer to RSS descriptor.
6017  * @param[in] nrssq_num
6018  *   New RSS queue number.
6019  *
6020  * @return
6021  *   0 on success, -1 otherwise and rte_errno is set.
6022  */
6023 static int
6024 flow_rss_workspace_adjust(struct mlx5_flow_workspace *wks,
6025                           struct mlx5_flow_rss_desc *rss_desc,
6026                           uint32_t nrssq_num)
6027 {
6028         if (likely(nrssq_num <= wks->rssq_num))
6029                 return 0;
6030         rss_desc->queue = realloc(rss_desc->queue,
6031                           sizeof(*rss_desc->queue) * RTE_ALIGN(nrssq_num, 2));
6032         if (!rss_desc->queue) {
6033                 rte_errno = ENOMEM;
6034                 return -1;
6035         }
6036         wks->rssq_num = RTE_ALIGN(nrssq_num, 2);
6037         return 0;
6038 }
6039
6040 /**
6041  * Create a flow and add it to @p list.
6042  *
6043  * @param dev
6044  *   Pointer to Ethernet device.
6045  * @param list
6046  *   Pointer to a TAILQ flow list. If this parameter NULL,
6047  *   no list insertion occurred, flow is just created,
6048  *   this is caller's responsibility to track the
6049  *   created flow.
6050  * @param[in] attr
6051  *   Flow rule attributes.
6052  * @param[in] items
6053  *   Pattern specification (list terminated by the END pattern item).
6054  * @param[in] actions
6055  *   Associated actions (list terminated by the END action).
6056  * @param[in] external
6057  *   This flow rule is created by request external to PMD.
6058  * @param[out] error
6059  *   Perform verbose error reporting if not NULL.
6060  *
6061  * @return
6062  *   A flow index on success, 0 otherwise and rte_errno is set.
6063  */
6064 static uint32_t
6065 flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
6066                  const struct rte_flow_attr *attr,
6067                  const struct rte_flow_item items[],
6068                  const struct rte_flow_action original_actions[],
6069                  bool external, struct rte_flow_error *error)
6070 {
6071         struct mlx5_priv *priv = dev->data->dev_private;
6072         struct rte_flow *flow = NULL;
6073         struct mlx5_flow *dev_flow;
6074         const struct rte_flow_action_rss *rss = NULL;
6075         struct mlx5_translated_action_handle
6076                 indir_actions[MLX5_MAX_INDIRECT_ACTIONS];
6077         int indir_actions_n = MLX5_MAX_INDIRECT_ACTIONS;
6078         union {
6079                 struct mlx5_flow_expand_rss buf;
6080                 uint8_t buffer[2048];
6081         } expand_buffer;
6082         union {
6083                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
6084                 uint8_t buffer[2048];
6085         } actions_rx;
6086         union {
6087                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
6088                 uint8_t buffer[2048];
6089         } actions_hairpin_tx;
6090         union {
6091                 struct rte_flow_item items[MLX5_MAX_SPLIT_ITEMS];
6092                 uint8_t buffer[2048];
6093         } items_tx;
6094         struct mlx5_flow_expand_rss *buf = &expand_buffer.buf;
6095         struct mlx5_flow_rss_desc *rss_desc;
6096         const struct rte_flow_action *p_actions_rx;
6097         uint32_t i;
6098         uint32_t idx = 0;
6099         int hairpin_flow;
6100         struct rte_flow_attr attr_tx = { .priority = 0 };
6101         const struct rte_flow_action *actions;
6102         struct rte_flow_action *translated_actions = NULL;
6103         struct mlx5_flow_tunnel *tunnel;
6104         struct tunnel_default_miss_ctx default_miss_ctx = { 0, };
6105         struct mlx5_flow_workspace *wks = mlx5_flow_push_thread_workspace();
6106         struct mlx5_flow_split_info flow_split_info = {
6107                 .external = !!external,
6108                 .skip_scale = 0,
6109                 .flow_idx = 0,
6110                 .prefix_mark = 0,
6111                 .prefix_layers = 0,
6112                 .table_id = 0
6113         };
6114         int ret;
6115
6116         MLX5_ASSERT(wks);
6117         rss_desc = &wks->rss_desc;
6118         ret = flow_action_handles_translate(dev, original_actions,
6119                                             indir_actions,
6120                                             &indir_actions_n,
6121                                             &translated_actions, error);
6122         if (ret < 0) {
6123                 MLX5_ASSERT(translated_actions == NULL);
6124                 return 0;
6125         }
6126         actions = translated_actions ? translated_actions : original_actions;
6127         p_actions_rx = actions;
6128         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
6129         ret = flow_drv_validate(dev, attr, items, p_actions_rx,
6130                                 external, hairpin_flow, error);
6131         if (ret < 0)
6132                 goto error_before_hairpin_split;
6133         flow = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], &idx);
6134         if (!flow) {
6135                 rte_errno = ENOMEM;
6136                 goto error_before_hairpin_split;
6137         }
6138         if (hairpin_flow > 0) {
6139                 if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
6140                         rte_errno = EINVAL;
6141                         goto error_before_hairpin_split;
6142                 }
6143                 flow_hairpin_split(dev, actions, actions_rx.actions,
6144                                    actions_hairpin_tx.actions, items_tx.items,
6145                                    idx);
6146                 p_actions_rx = actions_rx.actions;
6147         }
6148         flow_split_info.flow_idx = idx;
6149         flow->drv_type = flow_get_drv_type(dev, attr);
6150         MLX5_ASSERT(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
6151                     flow->drv_type < MLX5_FLOW_TYPE_MAX);
6152         memset(rss_desc, 0, offsetof(struct mlx5_flow_rss_desc, queue));
6153         /* RSS Action only works on NIC RX domain */
6154         if (attr->ingress && !attr->transfer)
6155                 rss = flow_get_rss_action(dev, p_actions_rx);
6156         if (rss) {
6157                 if (flow_rss_workspace_adjust(wks, rss_desc, rss->queue_num))
6158                         return 0;
6159                 /*
6160                  * The following information is required by
6161                  * mlx5_flow_hashfields_adjust() in advance.
6162                  */
6163                 rss_desc->level = rss->level;
6164                 /* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
6165                 rss_desc->types = !rss->types ? ETH_RSS_IP : rss->types;
6166         }
6167         flow->dev_handles = 0;
6168         if (rss && rss->types) {
6169                 unsigned int graph_root;
6170
6171                 graph_root = find_graph_root(items, rss->level);
6172                 ret = mlx5_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
6173                                            items, rss->types,
6174                                            mlx5_support_expansion, graph_root);
6175                 MLX5_ASSERT(ret > 0 &&
6176                        (unsigned int)ret < sizeof(expand_buffer.buffer));
6177         } else {
6178                 buf->entries = 1;
6179                 buf->entry[0].pattern = (void *)(uintptr_t)items;
6180         }
6181         rss_desc->shared_rss = flow_get_shared_rss_action(dev, indir_actions,
6182                                                       indir_actions_n);
6183         for (i = 0; i < buf->entries; ++i) {
6184                 /* Initialize flow split data. */
6185                 flow_split_info.prefix_layers = 0;
6186                 flow_split_info.prefix_mark = 0;
6187                 flow_split_info.skip_scale = 0;
6188                 /*
6189                  * The splitter may create multiple dev_flows,
6190                  * depending on configuration. In the simplest
6191                  * case it just creates unmodified original flow.
6192                  */
6193                 ret = flow_create_split_outer(dev, flow, attr,
6194                                               buf->entry[i].pattern,
6195                                               p_actions_rx, &flow_split_info,
6196                                               error);
6197                 if (ret < 0)
6198                         goto error;
6199                 if (is_flow_tunnel_steer_rule(wks->flows[0].tof_type)) {
6200                         ret = flow_tunnel_add_default_miss(dev, flow, attr,
6201                                                            p_actions_rx,
6202                                                            idx,
6203                                                            wks->flows[0].tunnel,
6204                                                            &default_miss_ctx,
6205                                                            error);
6206                         if (ret < 0) {
6207                                 mlx5_free(default_miss_ctx.queue);
6208                                 goto error;
6209                         }
6210                 }
6211         }
6212         /* Create the tx flow. */
6213         if (hairpin_flow) {
6214                 attr_tx.group = MLX5_HAIRPIN_TX_TABLE;
6215                 attr_tx.ingress = 0;
6216                 attr_tx.egress = 1;
6217                 dev_flow = flow_drv_prepare(dev, flow, &attr_tx, items_tx.items,
6218                                          actions_hairpin_tx.actions,
6219                                          idx, error);
6220                 if (!dev_flow)
6221                         goto error;
6222                 dev_flow->flow = flow;
6223                 dev_flow->external = 0;
6224                 SILIST_INSERT(&flow->dev_handles, dev_flow->handle_idx,
6225                               dev_flow->handle, next);
6226                 ret = flow_drv_translate(dev, dev_flow, &attr_tx,
6227                                          items_tx.items,
6228                                          actions_hairpin_tx.actions, error);
6229                 if (ret < 0)
6230                         goto error;
6231         }
6232         /*
6233          * Update the metadata register copy table. If extensive
6234          * metadata feature is enabled and registers are supported
6235          * we might create the extra rte_flow for each unique
6236          * MARK/FLAG action ID.
6237          *
6238          * The table is updated for ingress Flows only, because
6239          * the egress Flows belong to the different device and
6240          * copy table should be updated in peer NIC Rx domain.
6241          */
6242         if (attr->ingress &&
6243             (external || attr->group != MLX5_FLOW_MREG_CP_TABLE_GROUP)) {
6244                 ret = flow_mreg_update_copy_table(dev, flow, actions, error);
6245                 if (ret)
6246                         goto error;
6247         }
6248         /*
6249          * If the flow is external (from application) OR device is started,
6250          * OR mreg discover, then apply immediately.
6251          */
6252         if (external || dev->data->dev_started ||
6253             (attr->group == MLX5_FLOW_MREG_CP_TABLE_GROUP &&
6254              attr->priority == MLX5_FLOW_LOWEST_PRIO_INDICATOR)) {
6255                 ret = flow_drv_apply(dev, flow, error);
6256                 if (ret < 0)
6257                         goto error;
6258         }
6259         if (list) {
6260                 rte_spinlock_lock(&priv->flow_list_lock);
6261                 ILIST_INSERT(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], list, idx,
6262                              flow, next);
6263                 rte_spinlock_unlock(&priv->flow_list_lock);
6264         }
6265         flow_rxq_flags_set(dev, flow);
6266         rte_free(translated_actions);
6267         tunnel = flow_tunnel_from_rule(wks->flows);
6268         if (tunnel) {
6269                 flow->tunnel = 1;
6270                 flow->tunnel_id = tunnel->tunnel_id;
6271                 __atomic_add_fetch(&tunnel->refctn, 1, __ATOMIC_RELAXED);
6272                 mlx5_free(default_miss_ctx.queue);
6273         }
6274         mlx5_flow_pop_thread_workspace();
6275         return idx;
6276 error:
6277         MLX5_ASSERT(flow);
6278         ret = rte_errno; /* Save rte_errno before cleanup. */
6279         flow_mreg_del_copy_action(dev, flow);
6280         flow_drv_destroy(dev, flow);
6281         if (rss_desc->shared_rss)
6282                 __atomic_sub_fetch(&((struct mlx5_shared_action_rss *)
6283                         mlx5_ipool_get
6284                         (priv->sh->ipool[MLX5_IPOOL_RSS_SHARED_ACTIONS],
6285                         rss_desc->shared_rss))->refcnt, 1, __ATOMIC_RELAXED);
6286         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], idx);
6287         rte_errno = ret; /* Restore rte_errno. */
6288         ret = rte_errno;
6289         rte_errno = ret;
6290         mlx5_flow_pop_thread_workspace();
6291 error_before_hairpin_split:
6292         rte_free(translated_actions);
6293         return 0;
6294 }
6295
6296 /**
6297  * Create a dedicated flow rule on e-switch table 0 (root table), to direct all
6298  * incoming packets to table 1.
6299  *
6300  * Other flow rules, requested for group n, will be created in
6301  * e-switch table n+1.
6302  * Jump action to e-switch group n will be created to group n+1.
6303  *
6304  * Used when working in switchdev mode, to utilise advantages of table 1
6305  * and above.
6306  *
6307  * @param dev
6308  *   Pointer to Ethernet device.
6309  *
6310  * @return
6311  *   Pointer to flow on success, NULL otherwise and rte_errno is set.
6312  */
6313 struct rte_flow *
6314 mlx5_flow_create_esw_table_zero_flow(struct rte_eth_dev *dev)
6315 {
6316         const struct rte_flow_attr attr = {
6317                 .group = 0,
6318                 .priority = 0,
6319                 .ingress = 1,
6320                 .egress = 0,
6321                 .transfer = 1,
6322         };
6323         const struct rte_flow_item pattern = {
6324                 .type = RTE_FLOW_ITEM_TYPE_END,
6325         };
6326         struct rte_flow_action_jump jump = {
6327                 .group = 1,
6328         };
6329         const struct rte_flow_action actions[] = {
6330                 {
6331                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
6332                         .conf = &jump,
6333                 },
6334                 {
6335                         .type = RTE_FLOW_ACTION_TYPE_END,
6336                 },
6337         };
6338         struct mlx5_priv *priv = dev->data->dev_private;
6339         struct rte_flow_error error;
6340
6341         return (void *)(uintptr_t)flow_list_create(dev, &priv->ctrl_flows,
6342                                                    &attr, &pattern,
6343                                                    actions, false, &error);
6344 }
6345
6346 /**
6347  * Validate a flow supported by the NIC.
6348  *
6349  * @see rte_flow_validate()
6350  * @see rte_flow_ops
6351  */
6352 int
6353 mlx5_flow_validate(struct rte_eth_dev *dev,
6354                    const struct rte_flow_attr *attr,
6355                    const struct rte_flow_item items[],
6356                    const struct rte_flow_action original_actions[],
6357                    struct rte_flow_error *error)
6358 {
6359         int hairpin_flow;
6360         struct mlx5_translated_action_handle
6361                 indir_actions[MLX5_MAX_INDIRECT_ACTIONS];
6362         int indir_actions_n = MLX5_MAX_INDIRECT_ACTIONS;
6363         const struct rte_flow_action *actions;
6364         struct rte_flow_action *translated_actions = NULL;
6365         int ret = flow_action_handles_translate(dev, original_actions,
6366                                                 indir_actions,
6367                                                 &indir_actions_n,
6368                                                 &translated_actions, error);
6369
6370         if (ret)
6371                 return ret;
6372         actions = translated_actions ? translated_actions : original_actions;
6373         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
6374         ret = flow_drv_validate(dev, attr, items, actions,
6375                                 true, hairpin_flow, error);
6376         rte_free(translated_actions);
6377         return ret;
6378 }
6379
6380 /**
6381  * Create a flow.
6382  *
6383  * @see rte_flow_create()
6384  * @see rte_flow_ops
6385  */
6386 struct rte_flow *
6387 mlx5_flow_create(struct rte_eth_dev *dev,
6388                  const struct rte_flow_attr *attr,
6389                  const struct rte_flow_item items[],
6390                  const struct rte_flow_action actions[],
6391                  struct rte_flow_error *error)
6392 {
6393         struct mlx5_priv *priv = dev->data->dev_private;
6394
6395         /*
6396          * If the device is not started yet, it is not allowed to created a
6397          * flow from application. PMD default flows and traffic control flows
6398          * are not affected.
6399          */
6400         if (unlikely(!dev->data->dev_started)) {
6401                 DRV_LOG(DEBUG, "port %u is not started when "
6402                         "inserting a flow", dev->data->port_id);
6403                 rte_flow_error_set(error, ENODEV,
6404                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
6405                                    NULL,
6406                                    "port not started");
6407                 return NULL;
6408         }
6409
6410         return (void *)(uintptr_t)flow_list_create(dev, &priv->flows,
6411                                   attr, items, actions, true, error);
6412 }
6413
6414 /**
6415  * Destroy a flow in a list.
6416  *
6417  * @param dev
6418  *   Pointer to Ethernet device.
6419  * @param list
6420  *   Pointer to the Indexed flow list. If this parameter NULL,
6421  *   there is no flow removal from the list. Be noted that as
6422  *   flow is add to the indexed list, memory of the indexed
6423  *   list points to maybe changed as flow destroyed.
6424  * @param[in] flow_idx
6425  *   Index of flow to destroy.
6426  */
6427 static void
6428 flow_list_destroy(struct rte_eth_dev *dev, uint32_t *list,
6429                   uint32_t flow_idx)
6430 {
6431         struct mlx5_priv *priv = dev->data->dev_private;
6432         struct rte_flow *flow = mlx5_ipool_get(priv->sh->ipool
6433                                                [MLX5_IPOOL_RTE_FLOW], flow_idx);
6434
6435         if (!flow)
6436                 return;
6437         /*
6438          * Update RX queue flags only if port is started, otherwise it is
6439          * already clean.
6440          */
6441         if (dev->data->dev_started)
6442                 flow_rxq_flags_trim(dev, flow);
6443         flow_drv_destroy(dev, flow);
6444         if (list) {
6445                 rte_spinlock_lock(&priv->flow_list_lock);
6446                 ILIST_REMOVE(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], list,
6447                              flow_idx, flow, next);
6448                 rte_spinlock_unlock(&priv->flow_list_lock);
6449         }
6450         if (flow->tunnel) {
6451                 struct mlx5_flow_tunnel *tunnel;
6452
6453                 tunnel = mlx5_find_tunnel_id(dev, flow->tunnel_id);
6454                 RTE_VERIFY(tunnel);
6455                 if (!__atomic_sub_fetch(&tunnel->refctn, 1, __ATOMIC_RELAXED))
6456                         mlx5_flow_tunnel_free(dev, tunnel);
6457         }
6458         flow_mreg_del_copy_action(dev, flow);
6459         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], flow_idx);
6460 }
6461
6462 /**
6463  * Destroy all flows.
6464  *
6465  * @param dev
6466  *   Pointer to Ethernet device.
6467  * @param list
6468  *   Pointer to the Indexed flow list.
6469  * @param active
6470  *   If flushing is called avtively.
6471  */
6472 void
6473 mlx5_flow_list_flush(struct rte_eth_dev *dev, uint32_t *list, bool active)
6474 {
6475         uint32_t num_flushed = 0;
6476
6477         while (*list) {
6478                 flow_list_destroy(dev, list, *list);
6479                 num_flushed++;
6480         }
6481         if (active) {
6482                 DRV_LOG(INFO, "port %u: %u flows flushed before stopping",
6483                         dev->data->port_id, num_flushed);
6484         }
6485 }
6486
6487 /**
6488  * Stop all default actions for flows.
6489  *
6490  * @param dev
6491  *   Pointer to Ethernet device.
6492  */
6493 void
6494 mlx5_flow_stop_default(struct rte_eth_dev *dev)
6495 {
6496         flow_mreg_del_default_copy_action(dev);
6497         flow_rxq_flags_clear(dev);
6498 }
6499
6500 /**
6501  * Start all default actions for flows.
6502  *
6503  * @param dev
6504  *   Pointer to Ethernet device.
6505  * @return
6506  *   0 on success, a negative errno value otherwise and rte_errno is set.
6507  */
6508 int
6509 mlx5_flow_start_default(struct rte_eth_dev *dev)
6510 {
6511         struct rte_flow_error error;
6512
6513         /* Make sure default copy action (reg_c[0] -> reg_b) is created. */
6514         return flow_mreg_add_default_copy_action(dev, &error);
6515 }
6516
6517 /**
6518  * Release key of thread specific flow workspace data.
6519  */
6520 void
6521 flow_release_workspace(void *data)
6522 {
6523         struct mlx5_flow_workspace *wks = data;
6524         struct mlx5_flow_workspace *next;
6525
6526         while (wks) {
6527                 next = wks->next;
6528                 free(wks->rss_desc.queue);
6529                 free(wks);
6530                 wks = next;
6531         }
6532 }
6533
6534 /**
6535  * Get thread specific current flow workspace.
6536  *
6537  * @return pointer to thread specific flow workspace data, NULL on error.
6538  */
6539 struct mlx5_flow_workspace*
6540 mlx5_flow_get_thread_workspace(void)
6541 {
6542         struct mlx5_flow_workspace *data;
6543
6544         data = mlx5_flow_os_get_specific_workspace();
6545         MLX5_ASSERT(data && data->inuse);
6546         if (!data || !data->inuse)
6547                 DRV_LOG(ERR, "flow workspace not initialized.");
6548         return data;
6549 }
6550
6551 /**
6552  * Allocate and init new flow workspace.
6553  *
6554  * @return pointer to flow workspace data, NULL on error.
6555  */
6556 static struct mlx5_flow_workspace*
6557 flow_alloc_thread_workspace(void)
6558 {
6559         struct mlx5_flow_workspace *data = calloc(1, sizeof(*data));
6560
6561         if (!data) {
6562                 DRV_LOG(ERR, "Failed to allocate flow workspace "
6563                         "memory.");
6564                 return NULL;
6565         }
6566         data->rss_desc.queue = calloc(1,
6567                         sizeof(uint16_t) * MLX5_RSSQ_DEFAULT_NUM);
6568         if (!data->rss_desc.queue)
6569                 goto err;
6570         data->rssq_num = MLX5_RSSQ_DEFAULT_NUM;
6571         return data;
6572 err:
6573         if (data->rss_desc.queue)
6574                 free(data->rss_desc.queue);
6575         free(data);
6576         return NULL;
6577 }
6578
6579 /**
6580  * Get new thread specific flow workspace.
6581  *
6582  * If current workspace inuse, create new one and set as current.
6583  *
6584  * @return pointer to thread specific flow workspace data, NULL on error.
6585  */
6586 static struct mlx5_flow_workspace*
6587 mlx5_flow_push_thread_workspace(void)
6588 {
6589         struct mlx5_flow_workspace *curr;
6590         struct mlx5_flow_workspace *data;
6591
6592         curr = mlx5_flow_os_get_specific_workspace();
6593         if (!curr) {
6594                 data = flow_alloc_thread_workspace();
6595                 if (!data)
6596                         return NULL;
6597         } else if (!curr->inuse) {
6598                 data = curr;
6599         } else if (curr->next) {
6600                 data = curr->next;
6601         } else {
6602                 data = flow_alloc_thread_workspace();
6603                 if (!data)
6604                         return NULL;
6605                 curr->next = data;
6606                 data->prev = curr;
6607         }
6608         data->inuse = 1;
6609         data->flow_idx = 0;
6610         /* Set as current workspace */
6611         if (mlx5_flow_os_set_specific_workspace(data))
6612                 DRV_LOG(ERR, "Failed to set flow workspace to thread.");
6613         return data;
6614 }
6615
6616 /**
6617  * Close current thread specific flow workspace.
6618  *
6619  * If previous workspace available, set it as current.
6620  *
6621  * @return pointer to thread specific flow workspace data, NULL on error.
6622  */
6623 static void
6624 mlx5_flow_pop_thread_workspace(void)
6625 {
6626         struct mlx5_flow_workspace *data = mlx5_flow_get_thread_workspace();
6627
6628         if (!data)
6629                 return;
6630         if (!data->inuse) {
6631                 DRV_LOG(ERR, "Failed to close unused flow workspace.");
6632                 return;
6633         }
6634         data->inuse = 0;
6635         if (!data->prev)
6636                 return;
6637         if (mlx5_flow_os_set_specific_workspace(data->prev))
6638                 DRV_LOG(ERR, "Failed to set flow workspace to thread.");
6639 }
6640
6641 /**
6642  * Verify the flow list is empty
6643  *
6644  * @param dev
6645  *  Pointer to Ethernet device.
6646  *
6647  * @return the number of flows not released.
6648  */
6649 int
6650 mlx5_flow_verify(struct rte_eth_dev *dev)
6651 {
6652         struct mlx5_priv *priv = dev->data->dev_private;
6653         struct rte_flow *flow;
6654         uint32_t idx;
6655         int ret = 0;
6656
6657         ILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], priv->flows, idx,
6658                       flow, next) {
6659                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
6660                         dev->data->port_id, (void *)flow);
6661                 ++ret;
6662         }
6663         return ret;
6664 }
6665
6666 /**
6667  * Enable default hairpin egress flow.
6668  *
6669  * @param dev
6670  *   Pointer to Ethernet device.
6671  * @param queue
6672  *   The queue index.
6673  *
6674  * @return
6675  *   0 on success, a negative errno value otherwise and rte_errno is set.
6676  */
6677 int
6678 mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
6679                             uint32_t queue)
6680 {
6681         struct mlx5_priv *priv = dev->data->dev_private;
6682         const struct rte_flow_attr attr = {
6683                 .egress = 1,
6684                 .priority = 0,
6685         };
6686         struct mlx5_rte_flow_item_tx_queue queue_spec = {
6687                 .queue = queue,
6688         };
6689         struct mlx5_rte_flow_item_tx_queue queue_mask = {
6690                 .queue = UINT32_MAX,
6691         };
6692         struct rte_flow_item items[] = {
6693                 {
6694                         .type = (enum rte_flow_item_type)
6695                                 MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE,
6696                         .spec = &queue_spec,
6697                         .last = NULL,
6698                         .mask = &queue_mask,
6699                 },
6700                 {
6701                         .type = RTE_FLOW_ITEM_TYPE_END,
6702                 },
6703         };
6704         struct rte_flow_action_jump jump = {
6705                 .group = MLX5_HAIRPIN_TX_TABLE,
6706         };
6707         struct rte_flow_action actions[2];
6708         uint32_t flow_idx;
6709         struct rte_flow_error error;
6710
6711         actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
6712         actions[0].conf = &jump;
6713         actions[1].type = RTE_FLOW_ACTION_TYPE_END;
6714         flow_idx = flow_list_create(dev, &priv->ctrl_flows,
6715                                 &attr, items, actions, false, &error);
6716         if (!flow_idx) {
6717                 DRV_LOG(DEBUG,
6718                         "Failed to create ctrl flow: rte_errno(%d),"
6719                         " type(%d), message(%s)",
6720                         rte_errno, error.type,
6721                         error.message ? error.message : " (no stated reason)");
6722                 return -rte_errno;
6723         }
6724         return 0;
6725 }
6726
6727 /**
6728  * Enable a control flow configured from the control plane.
6729  *
6730  * @param dev
6731  *   Pointer to Ethernet device.
6732  * @param eth_spec
6733  *   An Ethernet flow spec to apply.
6734  * @param eth_mask
6735  *   An Ethernet flow mask to apply.
6736  * @param vlan_spec
6737  *   A VLAN flow spec to apply.
6738  * @param vlan_mask
6739  *   A VLAN flow mask to apply.
6740  *
6741  * @return
6742  *   0 on success, a negative errno value otherwise and rte_errno is set.
6743  */
6744 int
6745 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
6746                     struct rte_flow_item_eth *eth_spec,
6747                     struct rte_flow_item_eth *eth_mask,
6748                     struct rte_flow_item_vlan *vlan_spec,
6749                     struct rte_flow_item_vlan *vlan_mask)
6750 {
6751         struct mlx5_priv *priv = dev->data->dev_private;
6752         const struct rte_flow_attr attr = {
6753                 .ingress = 1,
6754                 .priority = MLX5_FLOW_LOWEST_PRIO_INDICATOR,
6755         };
6756         struct rte_flow_item items[] = {
6757                 {
6758                         .type = RTE_FLOW_ITEM_TYPE_ETH,
6759                         .spec = eth_spec,
6760                         .last = NULL,
6761                         .mask = eth_mask,
6762                 },
6763                 {
6764                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
6765                                               RTE_FLOW_ITEM_TYPE_END,
6766                         .spec = vlan_spec,
6767                         .last = NULL,
6768                         .mask = vlan_mask,
6769                 },
6770                 {
6771                         .type = RTE_FLOW_ITEM_TYPE_END,
6772                 },
6773         };
6774         uint16_t queue[priv->reta_idx_n];
6775         struct rte_flow_action_rss action_rss = {
6776                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
6777                 .level = 0,
6778                 .types = priv->rss_conf.rss_hf,
6779                 .key_len = priv->rss_conf.rss_key_len,
6780                 .queue_num = priv->reta_idx_n,
6781                 .key = priv->rss_conf.rss_key,
6782                 .queue = queue,
6783         };
6784         struct rte_flow_action actions[] = {
6785                 {
6786                         .type = RTE_FLOW_ACTION_TYPE_RSS,
6787                         .conf = &action_rss,
6788                 },
6789                 {
6790                         .type = RTE_FLOW_ACTION_TYPE_END,
6791                 },
6792         };
6793         uint32_t flow_idx;
6794         struct rte_flow_error error;
6795         unsigned int i;
6796
6797         if (!priv->reta_idx_n || !priv->rxqs_n) {
6798                 return 0;
6799         }
6800         if (!(dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG))
6801                 action_rss.types = 0;
6802         for (i = 0; i != priv->reta_idx_n; ++i)
6803                 queue[i] = (*priv->reta_idx)[i];
6804         flow_idx = flow_list_create(dev, &priv->ctrl_flows,
6805                                 &attr, items, actions, false, &error);
6806         if (!flow_idx)
6807                 return -rte_errno;
6808         return 0;
6809 }
6810
6811 /**
6812  * Enable a flow control configured from the control plane.
6813  *
6814  * @param dev
6815  *   Pointer to Ethernet device.
6816  * @param eth_spec
6817  *   An Ethernet flow spec to apply.
6818  * @param eth_mask
6819  *   An Ethernet flow mask to apply.
6820  *
6821  * @return
6822  *   0 on success, a negative errno value otherwise and rte_errno is set.
6823  */
6824 int
6825 mlx5_ctrl_flow(struct rte_eth_dev *dev,
6826                struct rte_flow_item_eth *eth_spec,
6827                struct rte_flow_item_eth *eth_mask)
6828 {
6829         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
6830 }
6831
6832 /**
6833  * Create default miss flow rule matching lacp traffic
6834  *
6835  * @param dev
6836  *   Pointer to Ethernet device.
6837  * @param eth_spec
6838  *   An Ethernet flow spec to apply.
6839  *
6840  * @return
6841  *   0 on success, a negative errno value otherwise and rte_errno is set.
6842  */
6843 int
6844 mlx5_flow_lacp_miss(struct rte_eth_dev *dev)
6845 {
6846         struct mlx5_priv *priv = dev->data->dev_private;
6847         /*
6848          * The LACP matching is done by only using ether type since using
6849          * a multicast dst mac causes kernel to give low priority to this flow.
6850          */
6851         static const struct rte_flow_item_eth lacp_spec = {
6852                 .type = RTE_BE16(0x8809),
6853         };
6854         static const struct rte_flow_item_eth lacp_mask = {
6855                 .type = 0xffff,
6856         };
6857         const struct rte_flow_attr attr = {
6858                 .ingress = 1,
6859         };
6860         struct rte_flow_item items[] = {
6861                 {
6862                         .type = RTE_FLOW_ITEM_TYPE_ETH,
6863                         .spec = &lacp_spec,
6864                         .mask = &lacp_mask,
6865                 },
6866                 {
6867                         .type = RTE_FLOW_ITEM_TYPE_END,
6868                 },
6869         };
6870         struct rte_flow_action actions[] = {
6871                 {
6872                         .type = (enum rte_flow_action_type)
6873                                 MLX5_RTE_FLOW_ACTION_TYPE_DEFAULT_MISS,
6874                 },
6875                 {
6876                         .type = RTE_FLOW_ACTION_TYPE_END,
6877                 },
6878         };
6879         struct rte_flow_error error;
6880         uint32_t flow_idx = flow_list_create(dev, &priv->ctrl_flows,
6881                                 &attr, items, actions, false, &error);
6882
6883         if (!flow_idx)
6884                 return -rte_errno;
6885         return 0;
6886 }
6887
6888 /**
6889  * Destroy a flow.
6890  *
6891  * @see rte_flow_destroy()
6892  * @see rte_flow_ops
6893  */
6894 int
6895 mlx5_flow_destroy(struct rte_eth_dev *dev,
6896                   struct rte_flow *flow,
6897                   struct rte_flow_error *error __rte_unused)
6898 {
6899         struct mlx5_priv *priv = dev->data->dev_private;
6900
6901         flow_list_destroy(dev, &priv->flows, (uintptr_t)(void *)flow);
6902         return 0;
6903 }
6904
6905 /**
6906  * Destroy all flows.
6907  *
6908  * @see rte_flow_flush()
6909  * @see rte_flow_ops
6910  */
6911 int
6912 mlx5_flow_flush(struct rte_eth_dev *dev,
6913                 struct rte_flow_error *error __rte_unused)
6914 {
6915         struct mlx5_priv *priv = dev->data->dev_private;
6916
6917         mlx5_flow_list_flush(dev, &priv->flows, false);
6918         return 0;
6919 }
6920
6921 /**
6922  * Isolated mode.
6923  *
6924  * @see rte_flow_isolate()
6925  * @see rte_flow_ops
6926  */
6927 int
6928 mlx5_flow_isolate(struct rte_eth_dev *dev,
6929                   int enable,
6930                   struct rte_flow_error *error)
6931 {
6932         struct mlx5_priv *priv = dev->data->dev_private;
6933
6934         if (dev->data->dev_started) {
6935                 rte_flow_error_set(error, EBUSY,
6936                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
6937                                    NULL,
6938                                    "port must be stopped first");
6939                 return -rte_errno;
6940         }
6941         priv->isolated = !!enable;
6942         if (enable)
6943                 dev->dev_ops = &mlx5_dev_ops_isolate;
6944         else
6945                 dev->dev_ops = &mlx5_dev_ops;
6946
6947         dev->rx_descriptor_status = mlx5_rx_descriptor_status;
6948         dev->tx_descriptor_status = mlx5_tx_descriptor_status;
6949
6950         return 0;
6951 }
6952
6953 /**
6954  * Query a flow.
6955  *
6956  * @see rte_flow_query()
6957  * @see rte_flow_ops
6958  */
6959 static int
6960 flow_drv_query(struct rte_eth_dev *dev,
6961                uint32_t flow_idx,
6962                const struct rte_flow_action *actions,
6963                void *data,
6964                struct rte_flow_error *error)
6965 {
6966         struct mlx5_priv *priv = dev->data->dev_private;
6967         const struct mlx5_flow_driver_ops *fops;
6968         struct rte_flow *flow = mlx5_ipool_get(priv->sh->ipool
6969                                                [MLX5_IPOOL_RTE_FLOW],
6970                                                flow_idx);
6971         enum mlx5_flow_drv_type ftype;
6972
6973         if (!flow) {
6974                 return rte_flow_error_set(error, ENOENT,
6975                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
6976                           NULL,
6977                           "invalid flow handle");
6978         }
6979         ftype = flow->drv_type;
6980         MLX5_ASSERT(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
6981         fops = flow_get_drv_ops(ftype);
6982
6983         return fops->query(dev, flow, actions, data, error);
6984 }
6985
6986 /**
6987  * Query a flow.
6988  *
6989  * @see rte_flow_query()
6990  * @see rte_flow_ops
6991  */
6992 int
6993 mlx5_flow_query(struct rte_eth_dev *dev,
6994                 struct rte_flow *flow,
6995                 const struct rte_flow_action *actions,
6996                 void *data,
6997                 struct rte_flow_error *error)
6998 {
6999         int ret;
7000
7001         ret = flow_drv_query(dev, (uintptr_t)(void *)flow, actions, data,
7002                              error);
7003         if (ret < 0)
7004                 return ret;
7005         return 0;
7006 }
7007
7008 /**
7009  * Get rte_flow callbacks.
7010  *
7011  * @param dev
7012  *   Pointer to Ethernet device structure.
7013  * @param ops
7014  *   Pointer to operation-specific structure.
7015  *
7016  * @return 0
7017  */
7018 int
7019 mlx5_flow_ops_get(struct rte_eth_dev *dev __rte_unused,
7020                   const struct rte_flow_ops **ops)
7021 {
7022         *ops = &mlx5_flow_ops;
7023         return 0;
7024 }
7025
7026 /**
7027  * Validate meter policy actions.
7028  * Dispatcher for action type specific validation.
7029  *
7030  * @param[in] dev
7031  *   Pointer to the Ethernet device structure.
7032  * @param[in] action
7033  *   The meter policy action object to validate.
7034  * @param[in] attr
7035  *   Attributes of flow to determine steering domain.
7036  * @param[out] is_rss
7037  *   Is RSS or not.
7038  * @param[out] domain_bitmap
7039  *   Domain bitmap.
7040  * @param[out] is_def_policy
7041  *   Is default policy or not.
7042  * @param[out] error
7043  *   Perform verbose error reporting if not NULL. Initialized in case of
7044  *   error only.
7045  *
7046  * @return
7047  *   0 on success, otherwise negative errno value.
7048  */
7049 int
7050 mlx5_flow_validate_mtr_acts(struct rte_eth_dev *dev,
7051                         const struct rte_flow_action *actions[RTE_COLORS],
7052                         struct rte_flow_attr *attr,
7053                         bool *is_rss,
7054                         uint8_t *domain_bitmap,
7055                         bool *is_def_policy,
7056                         struct rte_mtr_error *error)
7057 {
7058         const struct mlx5_flow_driver_ops *fops;
7059
7060         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7061         return fops->validate_mtr_acts(dev, actions, attr,
7062                         is_rss, domain_bitmap, is_def_policy, error);
7063 }
7064
7065 /**
7066  * Destroy the meter table set.
7067  *
7068  * @param[in] dev
7069  *   Pointer to Ethernet device.
7070  * @param[in] mtr_policy
7071  *   Meter policy struct.
7072  */
7073 void
7074 mlx5_flow_destroy_mtr_acts(struct rte_eth_dev *dev,
7075                       struct mlx5_flow_meter_policy *mtr_policy)
7076 {
7077         const struct mlx5_flow_driver_ops *fops;
7078
7079         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7080         fops->destroy_mtr_acts(dev, mtr_policy);
7081 }
7082
7083 /**
7084  * Create policy action, lock free,
7085  * (mutex should be acquired by caller).
7086  * Dispatcher for action type specific call.
7087  *
7088  * @param[in] dev
7089  *   Pointer to the Ethernet device structure.
7090  * @param[in] mtr_policy
7091  *   Meter policy struct.
7092  * @param[in] action
7093  *   Action specification used to create meter actions.
7094  * @param[out] error
7095  *   Perform verbose error reporting if not NULL. Initialized in case of
7096  *   error only.
7097  *
7098  * @return
7099  *   0 on success, otherwise negative errno value.
7100  */
7101 int
7102 mlx5_flow_create_mtr_acts(struct rte_eth_dev *dev,
7103                       struct mlx5_flow_meter_policy *mtr_policy,
7104                       const struct rte_flow_action *actions[RTE_COLORS],
7105                       struct rte_mtr_error *error)
7106 {
7107         const struct mlx5_flow_driver_ops *fops;
7108
7109         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7110         return fops->create_mtr_acts(dev, mtr_policy, actions, error);
7111 }
7112
7113 /**
7114  * Create policy rules, lock free,
7115  * (mutex should be acquired by caller).
7116  * Dispatcher for action type specific call.
7117  *
7118  * @param[in] dev
7119  *   Pointer to the Ethernet device structure.
7120  * @param[in] mtr_policy
7121  *   Meter policy struct.
7122  *
7123  * @return
7124  *   0 on success, -1 otherwise.
7125  */
7126 int
7127 mlx5_flow_create_policy_rules(struct rte_eth_dev *dev,
7128                              struct mlx5_flow_meter_policy *mtr_policy)
7129 {
7130         const struct mlx5_flow_driver_ops *fops;
7131
7132         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7133         return fops->create_policy_rules(dev, mtr_policy);
7134 }
7135
7136 /**
7137  * Destroy policy rules, lock free,
7138  * (mutex should be acquired by caller).
7139  * Dispatcher for action type specific call.
7140  *
7141  * @param[in] dev
7142  *   Pointer to the Ethernet device structure.
7143  * @param[in] mtr_policy
7144  *   Meter policy struct.
7145  */
7146 void
7147 mlx5_flow_destroy_policy_rules(struct rte_eth_dev *dev,
7148                              struct mlx5_flow_meter_policy *mtr_policy)
7149 {
7150         const struct mlx5_flow_driver_ops *fops;
7151
7152         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7153         fops->destroy_policy_rules(dev, mtr_policy);
7154 }
7155
7156 /**
7157  * Destroy the default policy table set.
7158  *
7159  * @param[in] dev
7160  *   Pointer to Ethernet device.
7161  */
7162 void
7163 mlx5_flow_destroy_def_policy(struct rte_eth_dev *dev)
7164 {
7165         const struct mlx5_flow_driver_ops *fops;
7166
7167         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7168         fops->destroy_def_policy(dev);
7169 }
7170
7171 /**
7172  * Destroy the default policy table set.
7173  *
7174  * @param[in] dev
7175  *   Pointer to Ethernet device.
7176  *
7177  * @return
7178  *   0 on success, -1 otherwise.
7179  */
7180 int
7181 mlx5_flow_create_def_policy(struct rte_eth_dev *dev)
7182 {
7183         const struct mlx5_flow_driver_ops *fops;
7184
7185         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7186         return fops->create_def_policy(dev);
7187 }
7188
7189 /**
7190  * Create the needed meter and suffix tables.
7191  *
7192  * @param[in] dev
7193  *   Pointer to Ethernet device.
7194  *
7195  * @return
7196  *   0 on success, -1 otherwise.
7197  */
7198 int
7199 mlx5_flow_create_mtr_tbls(struct rte_eth_dev *dev,
7200                         struct mlx5_flow_meter_info *fm,
7201                         uint32_t mtr_idx,
7202                         uint8_t domain_bitmap)
7203 {
7204         const struct mlx5_flow_driver_ops *fops;
7205
7206         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7207         return fops->create_mtr_tbls(dev, fm, mtr_idx, domain_bitmap);
7208 }
7209
7210 /**
7211  * Destroy the meter table set.
7212  *
7213  * @param[in] dev
7214  *   Pointer to Ethernet device.
7215  * @param[in] tbl
7216  *   Pointer to the meter table set.
7217  */
7218 void
7219 mlx5_flow_destroy_mtr_tbls(struct rte_eth_dev *dev,
7220                            struct mlx5_flow_meter_info *fm)
7221 {
7222         const struct mlx5_flow_driver_ops *fops;
7223
7224         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7225         fops->destroy_mtr_tbls(dev, fm);
7226 }
7227
7228 /**
7229  * Destroy the global meter drop table.
7230  *
7231  * @param[in] dev
7232  *   Pointer to Ethernet device.
7233  */
7234 void
7235 mlx5_flow_destroy_mtr_drop_tbls(struct rte_eth_dev *dev)
7236 {
7237         const struct mlx5_flow_driver_ops *fops;
7238
7239         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7240         fops->destroy_mtr_drop_tbls(dev);
7241 }
7242
7243 /**
7244  * Destroy the sub policy table with RX queue.
7245  *
7246  * @param[in] dev
7247  *   Pointer to Ethernet device.
7248  * @param[in] mtr_policy
7249  *   Pointer to meter policy table.
7250  */
7251 void
7252 mlx5_flow_destroy_sub_policy_with_rxq(struct rte_eth_dev *dev,
7253                 struct mlx5_flow_meter_policy *mtr_policy)
7254 {
7255         const struct mlx5_flow_driver_ops *fops;
7256
7257         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7258         fops->destroy_sub_policy_with_rxq(dev, mtr_policy);
7259 }
7260
7261 /**
7262  * Allocate the needed aso flow meter id.
7263  *
7264  * @param[in] dev
7265  *   Pointer to Ethernet device.
7266  *
7267  * @return
7268  *   Index to aso flow meter on success, NULL otherwise.
7269  */
7270 uint32_t
7271 mlx5_flow_mtr_alloc(struct rte_eth_dev *dev)
7272 {
7273         const struct mlx5_flow_driver_ops *fops;
7274
7275         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7276         return fops->create_meter(dev);
7277 }
7278
7279 /**
7280  * Free the aso flow meter id.
7281  *
7282  * @param[in] dev
7283  *   Pointer to Ethernet device.
7284  * @param[in] mtr_idx
7285  *  Index to aso flow meter to be free.
7286  *
7287  * @return
7288  *   0 on success.
7289  */
7290 void
7291 mlx5_flow_mtr_free(struct rte_eth_dev *dev, uint32_t mtr_idx)
7292 {
7293         const struct mlx5_flow_driver_ops *fops;
7294
7295         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7296         fops->free_meter(dev, mtr_idx);
7297 }
7298
7299 /**
7300  * Allocate a counter.
7301  *
7302  * @param[in] dev
7303  *   Pointer to Ethernet device structure.
7304  *
7305  * @return
7306  *   Index to allocated counter  on success, 0 otherwise.
7307  */
7308 uint32_t
7309 mlx5_counter_alloc(struct rte_eth_dev *dev)
7310 {
7311         const struct mlx5_flow_driver_ops *fops;
7312         struct rte_flow_attr attr = { .transfer = 0 };
7313
7314         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
7315                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7316                 return fops->counter_alloc(dev);
7317         }
7318         DRV_LOG(ERR,
7319                 "port %u counter allocate is not supported.",
7320                  dev->data->port_id);
7321         return 0;
7322 }
7323
7324 /**
7325  * Free a counter.
7326  *
7327  * @param[in] dev
7328  *   Pointer to Ethernet device structure.
7329  * @param[in] cnt
7330  *   Index to counter to be free.
7331  */
7332 void
7333 mlx5_counter_free(struct rte_eth_dev *dev, uint32_t cnt)
7334 {
7335         const struct mlx5_flow_driver_ops *fops;
7336         struct rte_flow_attr attr = { .transfer = 0 };
7337
7338         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
7339                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7340                 fops->counter_free(dev, cnt);
7341                 return;
7342         }
7343         DRV_LOG(ERR,
7344                 "port %u counter free is not supported.",
7345                  dev->data->port_id);
7346 }
7347
7348 /**
7349  * Query counter statistics.
7350  *
7351  * @param[in] dev
7352  *   Pointer to Ethernet device structure.
7353  * @param[in] cnt
7354  *   Index to counter to query.
7355  * @param[in] clear
7356  *   Set to clear counter statistics.
7357  * @param[out] pkts
7358  *   The counter hits packets number to save.
7359  * @param[out] bytes
7360  *   The counter hits bytes number to save.
7361  *
7362  * @return
7363  *   0 on success, a negative errno value otherwise.
7364  */
7365 int
7366 mlx5_counter_query(struct rte_eth_dev *dev, uint32_t cnt,
7367                    bool clear, uint64_t *pkts, uint64_t *bytes)
7368 {
7369         const struct mlx5_flow_driver_ops *fops;
7370         struct rte_flow_attr attr = { .transfer = 0 };
7371
7372         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
7373                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7374                 return fops->counter_query(dev, cnt, clear, pkts, bytes);
7375         }
7376         DRV_LOG(ERR,
7377                 "port %u counter query is not supported.",
7378                  dev->data->port_id);
7379         return -ENOTSUP;
7380 }
7381
7382 /**
7383  * Allocate a new memory for the counter values wrapped by all the needed
7384  * management.
7385  *
7386  * @param[in] sh
7387  *   Pointer to mlx5_dev_ctx_shared object.
7388  *
7389  * @return
7390  *   0 on success, a negative errno value otherwise.
7391  */
7392 static int
7393 mlx5_flow_create_counter_stat_mem_mng(struct mlx5_dev_ctx_shared *sh)
7394 {
7395         struct mlx5_devx_mkey_attr mkey_attr;
7396         struct mlx5_counter_stats_mem_mng *mem_mng;
7397         volatile struct flow_counter_stats *raw_data;
7398         int raws_n = MLX5_CNT_CONTAINER_RESIZE + MLX5_MAX_PENDING_QUERIES;
7399         int size = (sizeof(struct flow_counter_stats) *
7400                         MLX5_COUNTERS_PER_POOL +
7401                         sizeof(struct mlx5_counter_stats_raw)) * raws_n +
7402                         sizeof(struct mlx5_counter_stats_mem_mng);
7403         size_t pgsize = rte_mem_page_size();
7404         uint8_t *mem;
7405         int i;
7406
7407         if (pgsize == (size_t)-1) {
7408                 DRV_LOG(ERR, "Failed to get mem page size");
7409                 rte_errno = ENOMEM;
7410                 return -ENOMEM;
7411         }
7412         mem = mlx5_malloc(MLX5_MEM_ZERO, size, pgsize, SOCKET_ID_ANY);
7413         if (!mem) {
7414                 rte_errno = ENOMEM;
7415                 return -ENOMEM;
7416         }
7417         mem_mng = (struct mlx5_counter_stats_mem_mng *)(mem + size) - 1;
7418         size = sizeof(*raw_data) * MLX5_COUNTERS_PER_POOL * raws_n;
7419         mem_mng->umem = mlx5_os_umem_reg(sh->ctx, mem, size,
7420                                                  IBV_ACCESS_LOCAL_WRITE);
7421         if (!mem_mng->umem) {
7422                 rte_errno = errno;
7423                 mlx5_free(mem);
7424                 return -rte_errno;
7425         }
7426         memset(&mkey_attr, 0, sizeof(mkey_attr));
7427         mkey_attr.addr = (uintptr_t)mem;
7428         mkey_attr.size = size;
7429         mkey_attr.umem_id = mlx5_os_get_umem_id(mem_mng->umem);
7430         mkey_attr.pd = sh->pdn;
7431         mkey_attr.relaxed_ordering_write = sh->cmng.relaxed_ordering_write;
7432         mkey_attr.relaxed_ordering_read = sh->cmng.relaxed_ordering_read;
7433         mem_mng->dm = mlx5_devx_cmd_mkey_create(sh->ctx, &mkey_attr);
7434         if (!mem_mng->dm) {
7435                 mlx5_os_umem_dereg(mem_mng->umem);
7436                 rte_errno = errno;
7437                 mlx5_free(mem);
7438                 return -rte_errno;
7439         }
7440         mem_mng->raws = (struct mlx5_counter_stats_raw *)(mem + size);
7441         raw_data = (volatile struct flow_counter_stats *)mem;
7442         for (i = 0; i < raws_n; ++i) {
7443                 mem_mng->raws[i].mem_mng = mem_mng;
7444                 mem_mng->raws[i].data = raw_data + i * MLX5_COUNTERS_PER_POOL;
7445         }
7446         for (i = 0; i < MLX5_MAX_PENDING_QUERIES; ++i)
7447                 LIST_INSERT_HEAD(&sh->cmng.free_stat_raws,
7448                                  mem_mng->raws + MLX5_CNT_CONTAINER_RESIZE + i,
7449                                  next);
7450         LIST_INSERT_HEAD(&sh->cmng.mem_mngs, mem_mng, next);
7451         sh->cmng.mem_mng = mem_mng;
7452         return 0;
7453 }
7454
7455 /**
7456  * Set the statistic memory to the new counter pool.
7457  *
7458  * @param[in] sh
7459  *   Pointer to mlx5_dev_ctx_shared object.
7460  * @param[in] pool
7461  *   Pointer to the pool to set the statistic memory.
7462  *
7463  * @return
7464  *   0 on success, a negative errno value otherwise.
7465  */
7466 static int
7467 mlx5_flow_set_counter_stat_mem(struct mlx5_dev_ctx_shared *sh,
7468                                struct mlx5_flow_counter_pool *pool)
7469 {
7470         struct mlx5_flow_counter_mng *cmng = &sh->cmng;
7471         /* Resize statistic memory once used out. */
7472         if (!(pool->index % MLX5_CNT_CONTAINER_RESIZE) &&
7473             mlx5_flow_create_counter_stat_mem_mng(sh)) {
7474                 DRV_LOG(ERR, "Cannot resize counter stat mem.");
7475                 return -1;
7476         }
7477         rte_spinlock_lock(&pool->sl);
7478         pool->raw = cmng->mem_mng->raws + pool->index %
7479                     MLX5_CNT_CONTAINER_RESIZE;
7480         rte_spinlock_unlock(&pool->sl);
7481         pool->raw_hw = NULL;
7482         return 0;
7483 }
7484
7485 #define MLX5_POOL_QUERY_FREQ_US 1000000
7486
7487 /**
7488  * Set the periodic procedure for triggering asynchronous batch queries for all
7489  * the counter pools.
7490  *
7491  * @param[in] sh
7492  *   Pointer to mlx5_dev_ctx_shared object.
7493  */
7494 void
7495 mlx5_set_query_alarm(struct mlx5_dev_ctx_shared *sh)
7496 {
7497         uint32_t pools_n, us;
7498
7499         pools_n = __atomic_load_n(&sh->cmng.n_valid, __ATOMIC_RELAXED);
7500         us = MLX5_POOL_QUERY_FREQ_US / pools_n;
7501         DRV_LOG(DEBUG, "Set alarm for %u pools each %u us", pools_n, us);
7502         if (rte_eal_alarm_set(us, mlx5_flow_query_alarm, sh)) {
7503                 sh->cmng.query_thread_on = 0;
7504                 DRV_LOG(ERR, "Cannot reinitialize query alarm");
7505         } else {
7506                 sh->cmng.query_thread_on = 1;
7507         }
7508 }
7509
7510 /**
7511  * The periodic procedure for triggering asynchronous batch queries for all the
7512  * counter pools. This function is probably called by the host thread.
7513  *
7514  * @param[in] arg
7515  *   The parameter for the alarm process.
7516  */
7517 void
7518 mlx5_flow_query_alarm(void *arg)
7519 {
7520         struct mlx5_dev_ctx_shared *sh = arg;
7521         int ret;
7522         uint16_t pool_index = sh->cmng.pool_index;
7523         struct mlx5_flow_counter_mng *cmng = &sh->cmng;
7524         struct mlx5_flow_counter_pool *pool;
7525         uint16_t n_valid;
7526
7527         if (sh->cmng.pending_queries >= MLX5_MAX_PENDING_QUERIES)
7528                 goto set_alarm;
7529         rte_spinlock_lock(&cmng->pool_update_sl);
7530         pool = cmng->pools[pool_index];
7531         n_valid = cmng->n_valid;
7532         rte_spinlock_unlock(&cmng->pool_update_sl);
7533         /* Set the statistic memory to the new created pool. */
7534         if ((!pool->raw && mlx5_flow_set_counter_stat_mem(sh, pool)))
7535                 goto set_alarm;
7536         if (pool->raw_hw)
7537                 /* There is a pool query in progress. */
7538                 goto set_alarm;
7539         pool->raw_hw =
7540                 LIST_FIRST(&sh->cmng.free_stat_raws);
7541         if (!pool->raw_hw)
7542                 /* No free counter statistics raw memory. */
7543                 goto set_alarm;
7544         /*
7545          * Identify the counters released between query trigger and query
7546          * handle more efficiently. The counter released in this gap period
7547          * should wait for a new round of query as the new arrived packets
7548          * will not be taken into account.
7549          */
7550         pool->query_gen++;
7551         ret = mlx5_devx_cmd_flow_counter_query(pool->min_dcs, 0,
7552                                                MLX5_COUNTERS_PER_POOL,
7553                                                NULL, NULL,
7554                                                pool->raw_hw->mem_mng->dm->id,
7555                                                (void *)(uintptr_t)
7556                                                pool->raw_hw->data,
7557                                                sh->devx_comp,
7558                                                (uint64_t)(uintptr_t)pool);
7559         if (ret) {
7560                 DRV_LOG(ERR, "Failed to trigger asynchronous query for dcs ID"
7561                         " %d", pool->min_dcs->id);
7562                 pool->raw_hw = NULL;
7563                 goto set_alarm;
7564         }
7565         LIST_REMOVE(pool->raw_hw, next);
7566         sh->cmng.pending_queries++;
7567         pool_index++;
7568         if (pool_index >= n_valid)
7569                 pool_index = 0;
7570 set_alarm:
7571         sh->cmng.pool_index = pool_index;
7572         mlx5_set_query_alarm(sh);
7573 }
7574
7575 /**
7576  * Check and callback event for new aged flow in the counter pool
7577  *
7578  * @param[in] sh
7579  *   Pointer to mlx5_dev_ctx_shared object.
7580  * @param[in] pool
7581  *   Pointer to Current counter pool.
7582  */
7583 static void
7584 mlx5_flow_aging_check(struct mlx5_dev_ctx_shared *sh,
7585                    struct mlx5_flow_counter_pool *pool)
7586 {
7587         struct mlx5_priv *priv;
7588         struct mlx5_flow_counter *cnt;
7589         struct mlx5_age_info *age_info;
7590         struct mlx5_age_param *age_param;
7591         struct mlx5_counter_stats_raw *cur = pool->raw_hw;
7592         struct mlx5_counter_stats_raw *prev = pool->raw;
7593         const uint64_t curr_time = MLX5_CURR_TIME_SEC;
7594         const uint32_t time_delta = curr_time - pool->time_of_last_age_check;
7595         uint16_t expected = AGE_CANDIDATE;
7596         uint32_t i;
7597
7598         pool->time_of_last_age_check = curr_time;
7599         for (i = 0; i < MLX5_COUNTERS_PER_POOL; ++i) {
7600                 cnt = MLX5_POOL_GET_CNT(pool, i);
7601                 age_param = MLX5_CNT_TO_AGE(cnt);
7602                 if (__atomic_load_n(&age_param->state,
7603                                     __ATOMIC_RELAXED) != AGE_CANDIDATE)
7604                         continue;
7605                 if (cur->data[i].hits != prev->data[i].hits) {
7606                         __atomic_store_n(&age_param->sec_since_last_hit, 0,
7607                                          __ATOMIC_RELAXED);
7608                         continue;
7609                 }
7610                 if (__atomic_add_fetch(&age_param->sec_since_last_hit,
7611                                        time_delta,
7612                                        __ATOMIC_RELAXED) <= age_param->timeout)
7613                         continue;
7614                 /**
7615                  * Hold the lock first, or if between the
7616                  * state AGE_TMOUT and tailq operation the
7617                  * release happened, the release procedure
7618                  * may delete a non-existent tailq node.
7619                  */
7620                 priv = rte_eth_devices[age_param->port_id].data->dev_private;
7621                 age_info = GET_PORT_AGE_INFO(priv);
7622                 rte_spinlock_lock(&age_info->aged_sl);
7623                 if (__atomic_compare_exchange_n(&age_param->state, &expected,
7624                                                 AGE_TMOUT, false,
7625                                                 __ATOMIC_RELAXED,
7626                                                 __ATOMIC_RELAXED)) {
7627                         TAILQ_INSERT_TAIL(&age_info->aged_counters, cnt, next);
7628                         MLX5_AGE_SET(age_info, MLX5_AGE_EVENT_NEW);
7629                 }
7630                 rte_spinlock_unlock(&age_info->aged_sl);
7631         }
7632         mlx5_age_event_prepare(sh);
7633 }
7634
7635 /**
7636  * Handler for the HW respond about ready values from an asynchronous batch
7637  * query. This function is probably called by the host thread.
7638  *
7639  * @param[in] sh
7640  *   The pointer to the shared device context.
7641  * @param[in] async_id
7642  *   The Devx async ID.
7643  * @param[in] status
7644  *   The status of the completion.
7645  */
7646 void
7647 mlx5_flow_async_pool_query_handle(struct mlx5_dev_ctx_shared *sh,
7648                                   uint64_t async_id, int status)
7649 {
7650         struct mlx5_flow_counter_pool *pool =
7651                 (struct mlx5_flow_counter_pool *)(uintptr_t)async_id;
7652         struct mlx5_counter_stats_raw *raw_to_free;
7653         uint8_t query_gen = pool->query_gen ^ 1;
7654         struct mlx5_flow_counter_mng *cmng = &sh->cmng;
7655         enum mlx5_counter_type cnt_type =
7656                 pool->is_aged ? MLX5_COUNTER_TYPE_AGE :
7657                                 MLX5_COUNTER_TYPE_ORIGIN;
7658
7659         if (unlikely(status)) {
7660                 raw_to_free = pool->raw_hw;
7661         } else {
7662                 raw_to_free = pool->raw;
7663                 if (pool->is_aged)
7664                         mlx5_flow_aging_check(sh, pool);
7665                 rte_spinlock_lock(&pool->sl);
7666                 pool->raw = pool->raw_hw;
7667                 rte_spinlock_unlock(&pool->sl);
7668                 /* Be sure the new raw counters data is updated in memory. */
7669                 rte_io_wmb();
7670                 if (!TAILQ_EMPTY(&pool->counters[query_gen])) {
7671                         rte_spinlock_lock(&cmng->csl[cnt_type]);
7672                         TAILQ_CONCAT(&cmng->counters[cnt_type],
7673                                      &pool->counters[query_gen], next);
7674                         rte_spinlock_unlock(&cmng->csl[cnt_type]);
7675                 }
7676         }
7677         LIST_INSERT_HEAD(&sh->cmng.free_stat_raws, raw_to_free, next);
7678         pool->raw_hw = NULL;
7679         sh->cmng.pending_queries--;
7680 }
7681
7682 static int
7683 flow_group_to_table(uint32_t port_id, uint32_t group, uint32_t *table,
7684                     const struct flow_grp_info *grp_info,
7685                     struct rte_flow_error *error)
7686 {
7687         if (grp_info->transfer && grp_info->external &&
7688             grp_info->fdb_def_rule) {
7689                 if (group == UINT32_MAX)
7690                         return rte_flow_error_set
7691                                                 (error, EINVAL,
7692                                                  RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
7693                                                  NULL,
7694                                                  "group index not supported");
7695                 *table = group + 1;
7696         } else {
7697                 *table = group;
7698         }
7699         DRV_LOG(DEBUG, "port %u group=%#x table=%#x", port_id, group, *table);
7700         return 0;
7701 }
7702
7703 /**
7704  * Translate the rte_flow group index to HW table value.
7705  *
7706  * If tunnel offload is disabled, all group ids converted to flow table
7707  * id using the standard method.
7708  * If tunnel offload is enabled, group id can be converted using the
7709  * standard or tunnel conversion method. Group conversion method
7710  * selection depends on flags in `grp_info` parameter:
7711  * - Internal (grp_info.external == 0) groups conversion uses the
7712  *   standard method.
7713  * - Group ids in JUMP action converted with the tunnel conversion.
7714  * - Group id in rule attribute conversion depends on a rule type and
7715  *   group id value:
7716  *   ** non zero group attributes converted with the tunnel method
7717  *   ** zero group attribute in non-tunnel rule is converted using the
7718  *      standard method - there's only one root table
7719  *   ** zero group attribute in steer tunnel rule is converted with the
7720  *      standard method - single root table
7721  *   ** zero group attribute in match tunnel rule is a special OvS
7722  *      case: that value is used for portability reasons. That group
7723  *      id is converted with the tunnel conversion method.
7724  *
7725  * @param[in] dev
7726  *   Port device
7727  * @param[in] tunnel
7728  *   PMD tunnel offload object
7729  * @param[in] group
7730  *   rte_flow group index value.
7731  * @param[out] table
7732  *   HW table value.
7733  * @param[in] grp_info
7734  *   flags used for conversion
7735  * @param[out] error
7736  *   Pointer to error structure.
7737  *
7738  * @return
7739  *   0 on success, a negative errno value otherwise and rte_errno is set.
7740  */
7741 int
7742 mlx5_flow_group_to_table(struct rte_eth_dev *dev,
7743                          const struct mlx5_flow_tunnel *tunnel,
7744                          uint32_t group, uint32_t *table,
7745                          const struct flow_grp_info *grp_info,
7746                          struct rte_flow_error *error)
7747 {
7748         int ret;
7749         bool standard_translation;
7750
7751         if (!grp_info->skip_scale && grp_info->external &&
7752             group < MLX5_MAX_TABLES_EXTERNAL)
7753                 group *= MLX5_FLOW_TABLE_FACTOR;
7754         if (is_tunnel_offload_active(dev)) {
7755                 standard_translation = !grp_info->external ||
7756                                         grp_info->std_tbl_fix;
7757         } else {
7758                 standard_translation = true;
7759         }
7760         DRV_LOG(DEBUG,
7761                 "port %u group=%u transfer=%d external=%d fdb_def_rule=%d translate=%s",
7762                 dev->data->port_id, group, grp_info->transfer,
7763                 grp_info->external, grp_info->fdb_def_rule,
7764                 standard_translation ? "STANDARD" : "TUNNEL");
7765         if (standard_translation)
7766                 ret = flow_group_to_table(dev->data->port_id, group, table,
7767                                           grp_info, error);
7768         else
7769                 ret = tunnel_flow_group_to_flow_table(dev, tunnel, group,
7770                                                       table, error);
7771
7772         return ret;
7773 }
7774
7775 /**
7776  * Discover availability of metadata reg_c's.
7777  *
7778  * Iteratively use test flows to check availability.
7779  *
7780  * @param[in] dev
7781  *   Pointer to the Ethernet device structure.
7782  *
7783  * @return
7784  *   0 on success, a negative errno value otherwise and rte_errno is set.
7785  */
7786 int
7787 mlx5_flow_discover_mreg_c(struct rte_eth_dev *dev)
7788 {
7789         struct mlx5_priv *priv = dev->data->dev_private;
7790         struct mlx5_dev_config *config = &priv->config;
7791         enum modify_reg idx;
7792         int n = 0;
7793
7794         /* reg_c[0] and reg_c[1] are reserved. */
7795         config->flow_mreg_c[n++] = REG_C_0;
7796         config->flow_mreg_c[n++] = REG_C_1;
7797         /* Discover availability of other reg_c's. */
7798         for (idx = REG_C_2; idx <= REG_C_7; ++idx) {
7799                 struct rte_flow_attr attr = {
7800                         .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
7801                         .priority = MLX5_FLOW_LOWEST_PRIO_INDICATOR,
7802                         .ingress = 1,
7803                 };
7804                 struct rte_flow_item items[] = {
7805                         [0] = {
7806                                 .type = RTE_FLOW_ITEM_TYPE_END,
7807                         },
7808                 };
7809                 struct rte_flow_action actions[] = {
7810                         [0] = {
7811                                 .type = (enum rte_flow_action_type)
7812                                         MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
7813                                 .conf = &(struct mlx5_flow_action_copy_mreg){
7814                                         .src = REG_C_1,
7815                                         .dst = idx,
7816                                 },
7817                         },
7818                         [1] = {
7819                                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
7820                                 .conf = &(struct rte_flow_action_jump){
7821                                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
7822                                 },
7823                         },
7824                         [2] = {
7825                                 .type = RTE_FLOW_ACTION_TYPE_END,
7826                         },
7827                 };
7828                 uint32_t flow_idx;
7829                 struct rte_flow *flow;
7830                 struct rte_flow_error error;
7831
7832                 if (!config->dv_flow_en)
7833                         break;
7834                 /* Create internal flow, validation skips copy action. */
7835                 flow_idx = flow_list_create(dev, NULL, &attr, items,
7836                                             actions, false, &error);
7837                 flow = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW],
7838                                       flow_idx);
7839                 if (!flow)
7840                         continue;
7841                 config->flow_mreg_c[n++] = idx;
7842                 flow_list_destroy(dev, NULL, flow_idx);
7843         }
7844         for (; n < MLX5_MREG_C_NUM; ++n)
7845                 config->flow_mreg_c[n] = REG_NON;
7846         return 0;
7847 }
7848
7849 /**
7850  * Dump flow raw hw data to file
7851  *
7852  * @param[in] dev
7853  *    The pointer to Ethernet device.
7854  * @param[in] file
7855  *   A pointer to a file for output.
7856  * @param[out] error
7857  *   Perform verbose error reporting if not NULL. PMDs initialize this
7858  *   structure in case of error only.
7859  * @return
7860  *   0 on success, a nagative value otherwise.
7861  */
7862 int
7863 mlx5_flow_dev_dump(struct rte_eth_dev *dev, struct rte_flow *flow_idx,
7864                    FILE *file,
7865                    struct rte_flow_error *error __rte_unused)
7866 {
7867         struct mlx5_priv *priv = dev->data->dev_private;
7868         struct mlx5_dev_ctx_shared *sh = priv->sh;
7869         uint32_t handle_idx;
7870         int ret;
7871         struct mlx5_flow_handle *dh;
7872         struct rte_flow *flow;
7873
7874         if (!priv->config.dv_flow_en) {
7875                 if (fputs("device dv flow disabled\n", file) <= 0)
7876                         return -errno;
7877                 return -ENOTSUP;
7878         }
7879
7880         /* dump all */
7881         if (!flow_idx)
7882                 return mlx5_devx_cmd_flow_dump(sh->fdb_domain,
7883                                         sh->rx_domain,
7884                                         sh->tx_domain, file);
7885         /* dump one */
7886         flow = mlx5_ipool_get(priv->sh->ipool
7887                         [MLX5_IPOOL_RTE_FLOW], (uintptr_t)(void *)flow_idx);
7888         if (!flow)
7889                 return -ENOENT;
7890
7891         handle_idx = flow->dev_handles;
7892         while (handle_idx) {
7893                 dh = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW],
7894                                 handle_idx);
7895                 if (!dh)
7896                         return -ENOENT;
7897                 if (dh->drv_flow) {
7898                         ret = mlx5_devx_cmd_flow_single_dump(dh->drv_flow,
7899                                         file);
7900                         if (ret)
7901                                 return -ENOENT;
7902                 }
7903                 handle_idx = dh->next.next;
7904         }
7905         return 0;
7906 }
7907
7908 /**
7909  * Get aged-out flows.
7910  *
7911  * @param[in] dev
7912  *   Pointer to the Ethernet device structure.
7913  * @param[in] context
7914  *   The address of an array of pointers to the aged-out flows contexts.
7915  * @param[in] nb_countexts
7916  *   The length of context array pointers.
7917  * @param[out] error
7918  *   Perform verbose error reporting if not NULL. Initialized in case of
7919  *   error only.
7920  *
7921  * @return
7922  *   how many contexts get in success, otherwise negative errno value.
7923  *   if nb_contexts is 0, return the amount of all aged contexts.
7924  *   if nb_contexts is not 0 , return the amount of aged flows reported
7925  *   in the context array.
7926  */
7927 int
7928 mlx5_flow_get_aged_flows(struct rte_eth_dev *dev, void **contexts,
7929                         uint32_t nb_contexts, struct rte_flow_error *error)
7930 {
7931         const struct mlx5_flow_driver_ops *fops;
7932         struct rte_flow_attr attr = { .transfer = 0 };
7933
7934         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
7935                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
7936                 return fops->get_aged_flows(dev, contexts, nb_contexts,
7937                                                     error);
7938         }
7939         DRV_LOG(ERR,
7940                 "port %u get aged flows is not supported.",
7941                  dev->data->port_id);
7942         return -ENOTSUP;
7943 }
7944
7945 /* Wrapper for driver action_validate op callback */
7946 static int
7947 flow_drv_action_validate(struct rte_eth_dev *dev,
7948                          const struct rte_flow_indir_action_conf *conf,
7949                          const struct rte_flow_action *action,
7950                          const struct mlx5_flow_driver_ops *fops,
7951                          struct rte_flow_error *error)
7952 {
7953         static const char err_msg[] = "indirect action validation unsupported";
7954
7955         if (!fops->action_validate) {
7956                 DRV_LOG(ERR, "port %u %s.", dev->data->port_id, err_msg);
7957                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
7958                                    NULL, err_msg);
7959                 return -rte_errno;
7960         }
7961         return fops->action_validate(dev, conf, action, error);
7962 }
7963
7964 /**
7965  * Destroys the shared action by handle.
7966  *
7967  * @param dev
7968  *   Pointer to Ethernet device structure.
7969  * @param[in] handle
7970  *   Handle for the indirect action object to be destroyed.
7971  * @param[out] error
7972  *   Perform verbose error reporting if not NULL. PMDs initialize this
7973  *   structure in case of error only.
7974  *
7975  * @return
7976  *   0 on success, a negative errno value otherwise and rte_errno is set.
7977  *
7978  * @note: wrapper for driver action_create op callback.
7979  */
7980 static int
7981 mlx5_action_handle_destroy(struct rte_eth_dev *dev,
7982                            struct rte_flow_action_handle *handle,
7983                            struct rte_flow_error *error)
7984 {
7985         static const char err_msg[] = "indirect action destruction unsupported";
7986         struct rte_flow_attr attr = { .transfer = 0 };
7987         const struct mlx5_flow_driver_ops *fops =
7988                         flow_get_drv_ops(flow_get_drv_type(dev, &attr));
7989
7990         if (!fops->action_destroy) {
7991                 DRV_LOG(ERR, "port %u %s.", dev->data->port_id, err_msg);
7992                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
7993                                    NULL, err_msg);
7994                 return -rte_errno;
7995         }
7996         return fops->action_destroy(dev, handle, error);
7997 }
7998
7999 /* Wrapper for driver action_destroy op callback */
8000 static int
8001 flow_drv_action_update(struct rte_eth_dev *dev,
8002                        struct rte_flow_action_handle *handle,
8003                        const void *update,
8004                        const struct mlx5_flow_driver_ops *fops,
8005                        struct rte_flow_error *error)
8006 {
8007         static const char err_msg[] = "indirect action update unsupported";
8008
8009         if (!fops->action_update) {
8010                 DRV_LOG(ERR, "port %u %s.", dev->data->port_id, err_msg);
8011                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
8012                                    NULL, err_msg);
8013                 return -rte_errno;
8014         }
8015         return fops->action_update(dev, handle, update, error);
8016 }
8017
8018 /* Wrapper for driver action_destroy op callback */
8019 static int
8020 flow_drv_action_query(struct rte_eth_dev *dev,
8021                       const struct rte_flow_action_handle *handle,
8022                       void *data,
8023                       const struct mlx5_flow_driver_ops *fops,
8024                       struct rte_flow_error *error)
8025 {
8026         static const char err_msg[] = "indirect action query unsupported";
8027
8028         if (!fops->action_query) {
8029                 DRV_LOG(ERR, "port %u %s.", dev->data->port_id, err_msg);
8030                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
8031                                    NULL, err_msg);
8032                 return -rte_errno;
8033         }
8034         return fops->action_query(dev, handle, data, error);
8035 }
8036
8037 /**
8038  * Create indirect action for reuse in multiple flow rules.
8039  *
8040  * @param dev
8041  *   Pointer to Ethernet device structure.
8042  * @param conf
8043  *   Pointer to indirect action object configuration.
8044  * @param[in] action
8045  *   Action configuration for indirect action object creation.
8046  * @param[out] error
8047  *   Perform verbose error reporting if not NULL. PMDs initialize this
8048  *   structure in case of error only.
8049  * @return
8050  *   A valid handle in case of success, NULL otherwise and rte_errno is set.
8051  */
8052 static struct rte_flow_action_handle *
8053 mlx5_action_handle_create(struct rte_eth_dev *dev,
8054                           const struct rte_flow_indir_action_conf *conf,
8055                           const struct rte_flow_action *action,
8056                           struct rte_flow_error *error)
8057 {
8058         static const char err_msg[] = "indirect action creation unsupported";
8059         struct rte_flow_attr attr = { .transfer = 0 };
8060         const struct mlx5_flow_driver_ops *fops =
8061                         flow_get_drv_ops(flow_get_drv_type(dev, &attr));
8062
8063         if (flow_drv_action_validate(dev, conf, action, fops, error))
8064                 return NULL;
8065         if (!fops->action_create) {
8066                 DRV_LOG(ERR, "port %u %s.", dev->data->port_id, err_msg);
8067                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
8068                                    NULL, err_msg);
8069                 return NULL;
8070         }
8071         return fops->action_create(dev, conf, action, error);
8072 }
8073
8074 /**
8075  * Updates inplace the indirect action configuration pointed by *handle*
8076  * with the configuration provided as *update* argument.
8077  * The update of the indirect action configuration effects all flow rules
8078  * reusing the action via handle.
8079  *
8080  * @param dev
8081  *   Pointer to Ethernet device structure.
8082  * @param[in] handle
8083  *   Handle for the indirect action to be updated.
8084  * @param[in] update
8085  *   Action specification used to modify the action pointed by handle.
8086  *   *update* could be of same type with the action pointed by the *handle*
8087  *   handle argument, or some other structures like a wrapper, depending on
8088  *   the indirect action type.
8089  * @param[out] error
8090  *   Perform verbose error reporting if not NULL. PMDs initialize this
8091  *   structure in case of error only.
8092  *
8093  * @return
8094  *   0 on success, a negative errno value otherwise and rte_errno is set.
8095  */
8096 static int
8097 mlx5_action_handle_update(struct rte_eth_dev *dev,
8098                 struct rte_flow_action_handle *handle,
8099                 const void *update,
8100                 struct rte_flow_error *error)
8101 {
8102         struct rte_flow_attr attr = { .transfer = 0 };
8103         const struct mlx5_flow_driver_ops *fops =
8104                         flow_get_drv_ops(flow_get_drv_type(dev, &attr));
8105         int ret;
8106
8107         ret = flow_drv_action_validate(dev, NULL,
8108                         (const struct rte_flow_action *)update, fops, error);
8109         if (ret)
8110                 return ret;
8111         return flow_drv_action_update(dev, handle, update, fops,
8112                                       error);
8113 }
8114
8115 /**
8116  * Query the indirect action by handle.
8117  *
8118  * This function allows retrieving action-specific data such as counters.
8119  * Data is gathered by special action which may be present/referenced in
8120  * more than one flow rule definition.
8121  *
8122  * see @RTE_FLOW_ACTION_TYPE_COUNT
8123  *
8124  * @param dev
8125  *   Pointer to Ethernet device structure.
8126  * @param[in] handle
8127  *   Handle for the indirect action to query.
8128  * @param[in, out] data
8129  *   Pointer to storage for the associated query data type.
8130  * @param[out] error
8131  *   Perform verbose error reporting if not NULL. PMDs initialize this
8132  *   structure in case of error only.
8133  *
8134  * @return
8135  *   0 on success, a negative errno value otherwise and rte_errno is set.
8136  */
8137 static int
8138 mlx5_action_handle_query(struct rte_eth_dev *dev,
8139                          const struct rte_flow_action_handle *handle,
8140                          void *data,
8141                          struct rte_flow_error *error)
8142 {
8143         struct rte_flow_attr attr = { .transfer = 0 };
8144         const struct mlx5_flow_driver_ops *fops =
8145                         flow_get_drv_ops(flow_get_drv_type(dev, &attr));
8146
8147         return flow_drv_action_query(dev, handle, data, fops, error);
8148 }
8149
8150 /**
8151  * Destroy all indirect actions (shared RSS).
8152  *
8153  * @param dev
8154  *   Pointer to Ethernet device.
8155  *
8156  * @return
8157  *   0 on success, a negative errno value otherwise and rte_errno is set.
8158  */
8159 int
8160 mlx5_action_handle_flush(struct rte_eth_dev *dev)
8161 {
8162         struct rte_flow_error error;
8163         struct mlx5_priv *priv = dev->data->dev_private;
8164         struct mlx5_shared_action_rss *shared_rss;
8165         int ret = 0;
8166         uint32_t idx;
8167
8168         ILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_RSS_SHARED_ACTIONS],
8169                       priv->rss_shared_actions, idx, shared_rss, next) {
8170                 ret |= mlx5_action_handle_destroy(dev,
8171                        (struct rte_flow_action_handle *)(uintptr_t)idx, &error);
8172         }
8173         return ret;
8174 }
8175
8176 #ifndef HAVE_MLX5DV_DR
8177 #define MLX5_DOMAIN_SYNC_FLOW ((1 << 0) | (1 << 1))
8178 #else
8179 #define MLX5_DOMAIN_SYNC_FLOW \
8180         (MLX5DV_DR_DOMAIN_SYNC_FLAGS_SW | MLX5DV_DR_DOMAIN_SYNC_FLAGS_HW)
8181 #endif
8182
8183 int rte_pmd_mlx5_sync_flow(uint16_t port_id, uint32_t domains)
8184 {
8185         struct rte_eth_dev *dev = &rte_eth_devices[port_id];
8186         const struct mlx5_flow_driver_ops *fops;
8187         int ret;
8188         struct rte_flow_attr attr = { .transfer = 0 };
8189
8190         fops = flow_get_drv_ops(flow_get_drv_type(dev, &attr));
8191         ret = fops->sync_domain(dev, domains, MLX5_DOMAIN_SYNC_FLOW);
8192         if (ret > 0)
8193                 ret = -ret;
8194         return ret;
8195 }
8196
8197 const struct mlx5_flow_tunnel *
8198 mlx5_get_tof(const struct rte_flow_item *item,
8199              const struct rte_flow_action *action,
8200              enum mlx5_tof_rule_type *rule_type)
8201 {
8202         for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
8203                 if (item->type == (typeof(item->type))
8204                                   MLX5_RTE_FLOW_ITEM_TYPE_TUNNEL) {
8205                         *rule_type = MLX5_TUNNEL_OFFLOAD_MATCH_RULE;
8206                         return flow_items_to_tunnel(item);
8207                 }
8208         }
8209         for (; action->conf != RTE_FLOW_ACTION_TYPE_END; action++) {
8210                 if (action->type == (typeof(action->type))
8211                                     MLX5_RTE_FLOW_ACTION_TYPE_TUNNEL_SET) {
8212                         *rule_type = MLX5_TUNNEL_OFFLOAD_SET_RULE;
8213                         return flow_actions_to_tunnel(action);
8214                 }
8215         }
8216         return NULL;
8217 }
8218
8219 /**
8220  * tunnel offload functionalilty is defined for DV environment only
8221  */
8222 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
8223 __extension__
8224 union tunnel_offload_mark {
8225         uint32_t val;
8226         struct {
8227                 uint32_t app_reserve:8;
8228                 uint32_t table_id:15;
8229                 uint32_t transfer:1;
8230                 uint32_t _unused_:8;
8231         };
8232 };
8233
8234 static bool
8235 mlx5_access_tunnel_offload_db
8236         (struct rte_eth_dev *dev,
8237          bool (*match)(struct rte_eth_dev *,
8238                        struct mlx5_flow_tunnel *, const void *),
8239          void (*hit)(struct rte_eth_dev *, struct mlx5_flow_tunnel *, void *),
8240          void (*miss)(struct rte_eth_dev *, void *),
8241          void *ctx, bool lock_op);
8242
8243 static int
8244 flow_tunnel_add_default_miss(struct rte_eth_dev *dev,
8245                              struct rte_flow *flow,
8246                              const struct rte_flow_attr *attr,
8247                              const struct rte_flow_action *app_actions,
8248                              uint32_t flow_idx,
8249                              const struct mlx5_flow_tunnel *tunnel,
8250                              struct tunnel_default_miss_ctx *ctx,
8251                              struct rte_flow_error *error)
8252 {
8253         struct mlx5_priv *priv = dev->data->dev_private;
8254         struct mlx5_flow *dev_flow;
8255         struct rte_flow_attr miss_attr = *attr;
8256         const struct rte_flow_item miss_items[2] = {
8257                 {
8258                         .type = RTE_FLOW_ITEM_TYPE_ETH,
8259                         .spec = NULL,
8260                         .last = NULL,
8261                         .mask = NULL
8262                 },
8263                 {
8264                         .type = RTE_FLOW_ITEM_TYPE_END,
8265                         .spec = NULL,
8266                         .last = NULL,
8267                         .mask = NULL
8268                 }
8269         };
8270         union tunnel_offload_mark mark_id;
8271         struct rte_flow_action_mark miss_mark;
8272         struct rte_flow_action miss_actions[3] = {
8273                 [0] = { .type = RTE_FLOW_ACTION_TYPE_MARK, .conf = &miss_mark },
8274                 [2] = { .type = RTE_FLOW_ACTION_TYPE_END,  .conf = NULL }
8275         };
8276         const struct rte_flow_action_jump *jump_data;
8277         uint32_t i, flow_table = 0; /* prevent compilation warning */
8278         struct flow_grp_info grp_info = {
8279                 .external = 1,
8280                 .transfer = attr->transfer,
8281                 .fdb_def_rule = !!priv->fdb_def_rule,
8282                 .std_tbl_fix = 0,
8283         };
8284         int ret;
8285
8286         if (!attr->transfer) {
8287                 uint32_t q_size;
8288
8289                 miss_actions[1].type = RTE_FLOW_ACTION_TYPE_RSS;
8290                 q_size = priv->reta_idx_n * sizeof(ctx->queue[0]);
8291                 ctx->queue = mlx5_malloc(MLX5_MEM_SYS | MLX5_MEM_ZERO, q_size,
8292                                          0, SOCKET_ID_ANY);
8293                 if (!ctx->queue)
8294                         return rte_flow_error_set
8295                                 (error, ENOMEM,
8296                                 RTE_FLOW_ERROR_TYPE_ACTION_CONF,
8297                                 NULL, "invalid default miss RSS");
8298                 ctx->action_rss.func = RTE_ETH_HASH_FUNCTION_DEFAULT,
8299                 ctx->action_rss.level = 0,
8300                 ctx->action_rss.types = priv->rss_conf.rss_hf,
8301                 ctx->action_rss.key_len = priv->rss_conf.rss_key_len,
8302                 ctx->action_rss.queue_num = priv->reta_idx_n,
8303                 ctx->action_rss.key = priv->rss_conf.rss_key,
8304                 ctx->action_rss.queue = ctx->queue;
8305                 if (!priv->reta_idx_n || !priv->rxqs_n)
8306                         return rte_flow_error_set
8307                                 (error, EINVAL,
8308                                 RTE_FLOW_ERROR_TYPE_ACTION_CONF,
8309                                 NULL, "invalid port configuration");
8310                 if (!(dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG))
8311                         ctx->action_rss.types = 0;
8312                 for (i = 0; i != priv->reta_idx_n; ++i)
8313                         ctx->queue[i] = (*priv->reta_idx)[i];
8314         } else {
8315                 miss_actions[1].type = RTE_FLOW_ACTION_TYPE_JUMP;
8316                 ctx->miss_jump.group = MLX5_TNL_MISS_FDB_JUMP_GRP;
8317         }
8318         miss_actions[1].conf = (typeof(miss_actions[1].conf))ctx->raw;
8319         for (; app_actions->type != RTE_FLOW_ACTION_TYPE_JUMP; app_actions++);
8320         jump_data = app_actions->conf;
8321         miss_attr.priority = MLX5_TNL_MISS_RULE_PRIORITY;
8322         miss_attr.group = jump_data->group;
8323         ret = mlx5_flow_group_to_table(dev, tunnel, jump_data->group,
8324                                        &flow_table, &grp_info, error);
8325         if (ret)
8326                 return rte_flow_error_set(error, EINVAL,
8327                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
8328                                           NULL, "invalid tunnel id");
8329         mark_id.app_reserve = 0;
8330         mark_id.table_id = tunnel_flow_tbl_to_id(flow_table);
8331         mark_id.transfer = !!attr->transfer;
8332         mark_id._unused_ = 0;
8333         miss_mark.id = mark_id.val;
8334         dev_flow = flow_drv_prepare(dev, flow, &miss_attr,
8335                                     miss_items, miss_actions, flow_idx, error);
8336         if (!dev_flow)
8337                 return -rte_errno;
8338         dev_flow->flow = flow;
8339         dev_flow->external = true;
8340         dev_flow->tunnel = tunnel;
8341         dev_flow->tof_type = MLX5_TUNNEL_OFFLOAD_MISS_RULE;
8342         /* Subflow object was created, we must include one in the list. */
8343         SILIST_INSERT(&flow->dev_handles, dev_flow->handle_idx,
8344                       dev_flow->handle, next);
8345         DRV_LOG(DEBUG,
8346                 "port %u tunnel type=%d id=%u miss rule priority=%u group=%u",
8347                 dev->data->port_id, tunnel->app_tunnel.type,
8348                 tunnel->tunnel_id, miss_attr.priority, miss_attr.group);
8349         ret = flow_drv_translate(dev, dev_flow, &miss_attr, miss_items,
8350                                   miss_actions, error);
8351         if (!ret)
8352                 ret = flow_mreg_update_copy_table(dev, flow, miss_actions,
8353                                                   error);
8354
8355         return ret;
8356 }
8357
8358 static const struct mlx5_flow_tbl_data_entry  *
8359 tunnel_mark_decode(struct rte_eth_dev *dev, uint32_t mark)
8360 {
8361         struct mlx5_priv *priv = dev->data->dev_private;
8362         struct mlx5_dev_ctx_shared *sh = priv->sh;
8363         struct mlx5_hlist_entry *he;
8364         union tunnel_offload_mark mbits = { .val = mark };
8365         union mlx5_flow_tbl_key table_key = {
8366                 {
8367                         .level = tunnel_id_to_flow_tbl(mbits.table_id),
8368                         .id = 0,
8369                         .reserved = 0,
8370                         .dummy = 0,
8371                         .is_fdb = !!mbits.transfer,
8372                         .is_egress = 0,
8373                 }
8374         };
8375         he = mlx5_hlist_lookup(sh->flow_tbls, table_key.v64, NULL);
8376         return he ?
8377                container_of(he, struct mlx5_flow_tbl_data_entry, entry) : NULL;
8378 }
8379
8380 static void
8381 mlx5_flow_tunnel_grp2tbl_remove_cb(struct mlx5_hlist *list,
8382                                    struct mlx5_hlist_entry *entry)
8383 {
8384         struct mlx5_dev_ctx_shared *sh = list->ctx;
8385         struct tunnel_tbl_entry *tte = container_of(entry, typeof(*tte), hash);
8386
8387         mlx5_ipool_free(sh->ipool[MLX5_IPOOL_TNL_TBL_ID],
8388                         tunnel_flow_tbl_to_id(tte->flow_table));
8389         mlx5_free(tte);
8390 }
8391
8392 static int
8393 mlx5_flow_tunnel_grp2tbl_match_cb(struct mlx5_hlist *list __rte_unused,
8394                                   struct mlx5_hlist_entry *entry,
8395                                   uint64_t key, void *cb_ctx __rte_unused)
8396 {
8397         union tunnel_tbl_key tbl = {
8398                 .val = key,
8399         };
8400         struct tunnel_tbl_entry *tte = container_of(entry, typeof(*tte), hash);
8401
8402         return tbl.tunnel_id != tte->tunnel_id || tbl.group != tte->group;
8403 }
8404
8405 static struct mlx5_hlist_entry *
8406 mlx5_flow_tunnel_grp2tbl_create_cb(struct mlx5_hlist *list, uint64_t key,
8407                                    void *ctx __rte_unused)
8408 {
8409         struct mlx5_dev_ctx_shared *sh = list->ctx;
8410         struct tunnel_tbl_entry *tte;
8411         union tunnel_tbl_key tbl = {
8412                 .val = key,
8413         };
8414
8415         tte = mlx5_malloc(MLX5_MEM_SYS | MLX5_MEM_ZERO,
8416                           sizeof(*tte), 0,
8417                           SOCKET_ID_ANY);
8418         if (!tte)
8419                 goto err;
8420         mlx5_ipool_malloc(sh->ipool[MLX5_IPOOL_TNL_TBL_ID],
8421                           &tte->flow_table);
8422         if (tte->flow_table >= MLX5_MAX_TABLES) {
8423                 DRV_LOG(ERR, "Tunnel TBL ID %d exceed max limit.",
8424                         tte->flow_table);
8425                 mlx5_ipool_free(sh->ipool[MLX5_IPOOL_TNL_TBL_ID],
8426                                 tte->flow_table);
8427                 goto err;
8428         } else if (!tte->flow_table) {
8429                 goto err;
8430         }
8431         tte->flow_table = tunnel_id_to_flow_tbl(tte->flow_table);
8432         tte->tunnel_id = tbl.tunnel_id;
8433         tte->group = tbl.group;
8434         return &tte->hash;
8435 err:
8436         if (tte)
8437                 mlx5_free(tte);
8438         return NULL;
8439 }
8440
8441 static uint32_t
8442 tunnel_flow_group_to_flow_table(struct rte_eth_dev *dev,
8443                                 const struct mlx5_flow_tunnel *tunnel,
8444                                 uint32_t group, uint32_t *table,
8445                                 struct rte_flow_error *error)
8446 {
8447         struct mlx5_hlist_entry *he;
8448         struct tunnel_tbl_entry *tte;
8449         union tunnel_tbl_key key = {
8450                 .tunnel_id = tunnel ? tunnel->tunnel_id : 0,
8451                 .group = group
8452         };
8453         struct mlx5_flow_tunnel_hub *thub = mlx5_tunnel_hub(dev);
8454         struct mlx5_hlist *group_hash;
8455
8456         group_hash = tunnel ? tunnel->groups : thub->groups;
8457         he = mlx5_hlist_register(group_hash, key.val, NULL);
8458         if (!he)
8459                 return rte_flow_error_set(error, EINVAL,
8460                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
8461                                           NULL,
8462                                           "tunnel group index not supported");
8463         tte = container_of(he, typeof(*tte), hash);
8464         *table = tte->flow_table;
8465         DRV_LOG(DEBUG, "port %u tunnel %u group=%#x table=%#x",
8466                 dev->data->port_id, key.tunnel_id, group, *table);
8467         return 0;
8468 }
8469
8470 static void
8471 mlx5_flow_tunnel_free(struct rte_eth_dev *dev,
8472                       struct mlx5_flow_tunnel *tunnel)
8473 {
8474         struct mlx5_priv *priv = dev->data->dev_private;
8475         struct mlx5_indexed_pool *ipool;
8476
8477         DRV_LOG(DEBUG, "port %u release pmd tunnel id=0x%x",
8478                 dev->data->port_id, tunnel->tunnel_id);
8479         LIST_REMOVE(tunnel, chain);
8480         mlx5_hlist_destroy(tunnel->groups);
8481         ipool = priv->sh->ipool[MLX5_IPOOL_TUNNEL_ID];
8482         mlx5_ipool_free(ipool, tunnel->tunnel_id);
8483 }
8484
8485 static bool
8486 mlx5_access_tunnel_offload_db
8487         (struct rte_eth_dev *dev,
8488          bool (*match)(struct rte_eth_dev *,
8489                        struct mlx5_flow_tunnel *, const void *),
8490          void (*hit)(struct rte_eth_dev *, struct mlx5_flow_tunnel *, void *),
8491          void (*miss)(struct rte_eth_dev *, void *),
8492          void *ctx, bool lock_op)
8493 {
8494         bool verdict = false;
8495         struct mlx5_flow_tunnel_hub *thub = mlx5_tunnel_hub(dev);
8496         struct mlx5_flow_tunnel *tunnel;
8497
8498         rte_spinlock_lock(&thub->sl);
8499         LIST_FOREACH(tunnel, &thub->tunnels, chain) {
8500                 verdict = match(dev, tunnel, (const void *)ctx);
8501                 if (verdict)
8502                         break;
8503         }
8504         if (!lock_op)
8505                 rte_spinlock_unlock(&thub->sl);
8506         if (verdict && hit)
8507                 hit(dev, tunnel, ctx);
8508         if (!verdict && miss)
8509                 miss(dev, ctx);
8510         if (lock_op)
8511                 rte_spinlock_unlock(&thub->sl);
8512
8513         return verdict;
8514 }
8515
8516 struct tunnel_db_find_tunnel_id_ctx {
8517         uint32_t tunnel_id;
8518         struct mlx5_flow_tunnel *tunnel;
8519 };
8520
8521 static bool
8522 find_tunnel_id_match(struct rte_eth_dev *dev,
8523                      struct mlx5_flow_tunnel *tunnel, const void *x)
8524 {
8525         const struct tunnel_db_find_tunnel_id_ctx *ctx = x;
8526
8527         RTE_SET_USED(dev);
8528         return tunnel->tunnel_id == ctx->tunnel_id;
8529 }
8530
8531 static void
8532 find_tunnel_id_hit(struct rte_eth_dev *dev,
8533                    struct mlx5_flow_tunnel *tunnel, void *x)
8534 {
8535         struct tunnel_db_find_tunnel_id_ctx *ctx = x;
8536         RTE_SET_USED(dev);
8537         ctx->tunnel = tunnel;
8538 }
8539
8540 static struct mlx5_flow_tunnel *
8541 mlx5_find_tunnel_id(struct rte_eth_dev *dev, uint32_t id)
8542 {
8543         struct tunnel_db_find_tunnel_id_ctx ctx = {
8544                 .tunnel_id = id,
8545         };
8546
8547         mlx5_access_tunnel_offload_db(dev, find_tunnel_id_match,
8548                                       find_tunnel_id_hit, NULL, &ctx, true);
8549
8550         return ctx.tunnel;
8551 }
8552
8553 static struct mlx5_flow_tunnel *
8554 mlx5_flow_tunnel_allocate(struct rte_eth_dev *dev,
8555                           const struct rte_flow_tunnel *app_tunnel)
8556 {
8557         struct mlx5_priv *priv = dev->data->dev_private;
8558         struct mlx5_indexed_pool *ipool;
8559         struct mlx5_flow_tunnel *tunnel;
8560         uint32_t id;
8561
8562         ipool = priv->sh->ipool[MLX5_IPOOL_TUNNEL_ID];
8563         tunnel = mlx5_ipool_zmalloc(ipool, &id);
8564         if (!tunnel)
8565                 return NULL;
8566         if (id >= MLX5_MAX_TUNNELS) {
8567                 mlx5_ipool_free(ipool, id);
8568                 DRV_LOG(ERR, "Tunnel ID %d exceed max limit.", id);
8569                 return NULL;
8570         }
8571         tunnel->groups = mlx5_hlist_create("tunnel groups", 1024, 0, 0,
8572                                            mlx5_flow_tunnel_grp2tbl_create_cb,
8573                                            mlx5_flow_tunnel_grp2tbl_match_cb,
8574                                            mlx5_flow_tunnel_grp2tbl_remove_cb);
8575         if (!tunnel->groups) {
8576                 mlx5_ipool_free(ipool, id);
8577                 return NULL;
8578         }
8579         tunnel->groups->ctx = priv->sh;
8580         /* initiate new PMD tunnel */
8581         memcpy(&tunnel->app_tunnel, app_tunnel, sizeof(*app_tunnel));
8582         tunnel->tunnel_id = id;
8583         tunnel->action.type = (typeof(tunnel->action.type))
8584                               MLX5_RTE_FLOW_ACTION_TYPE_TUNNEL_SET;
8585         tunnel->action.conf = tunnel;
8586         tunnel->item.type = (typeof(tunnel->item.type))
8587                             MLX5_RTE_FLOW_ITEM_TYPE_TUNNEL;
8588         tunnel->item.spec = tunnel;
8589         tunnel->item.last = NULL;
8590         tunnel->item.mask = NULL;
8591
8592         DRV_LOG(DEBUG, "port %u new pmd tunnel id=0x%x",
8593                 dev->data->port_id, tunnel->tunnel_id);
8594
8595         return tunnel;
8596 }
8597
8598 struct tunnel_db_get_tunnel_ctx {
8599         const struct rte_flow_tunnel *app_tunnel;
8600         struct mlx5_flow_tunnel *tunnel;
8601 };
8602
8603 static bool get_tunnel_match(struct rte_eth_dev *dev,
8604                              struct mlx5_flow_tunnel *tunnel, const void *x)
8605 {
8606         const struct tunnel_db_get_tunnel_ctx *ctx = x;
8607
8608         RTE_SET_USED(dev);
8609         return !memcmp(ctx->app_tunnel, &tunnel->app_tunnel,
8610                        sizeof(*ctx->app_tunnel));
8611 }
8612
8613 static void get_tunnel_hit(struct rte_eth_dev *dev,
8614                            struct mlx5_flow_tunnel *tunnel, void *x)
8615 {
8616         /* called under tunnel spinlock protection */
8617         struct tunnel_db_get_tunnel_ctx *ctx = x;
8618
8619         RTE_SET_USED(dev);
8620         tunnel->refctn++;
8621         ctx->tunnel = tunnel;
8622 }
8623
8624 static void get_tunnel_miss(struct rte_eth_dev *dev, void *x)
8625 {
8626         /* called under tunnel spinlock protection */
8627         struct mlx5_flow_tunnel_hub *thub = mlx5_tunnel_hub(dev);
8628         struct tunnel_db_get_tunnel_ctx *ctx = x;
8629
8630         rte_spinlock_unlock(&thub->sl);
8631         ctx->tunnel = mlx5_flow_tunnel_allocate(dev, ctx->app_tunnel);
8632         rte_spinlock_lock(&thub->sl);
8633         if (ctx->tunnel) {
8634                 ctx->tunnel->refctn = 1;
8635                 LIST_INSERT_HEAD(&thub->tunnels, ctx->tunnel, chain);
8636         }
8637 }
8638
8639
8640 static int
8641 mlx5_get_flow_tunnel(struct rte_eth_dev *dev,
8642                      const struct rte_flow_tunnel *app_tunnel,
8643                      struct mlx5_flow_tunnel **tunnel)
8644 {
8645         struct tunnel_db_get_tunnel_ctx ctx = {
8646                 .app_tunnel = app_tunnel,
8647         };
8648
8649         mlx5_access_tunnel_offload_db(dev, get_tunnel_match, get_tunnel_hit,
8650                                       get_tunnel_miss, &ctx, true);
8651         *tunnel = ctx.tunnel;
8652         return ctx.tunnel ? 0 : -ENOMEM;
8653 }
8654
8655 void mlx5_release_tunnel_hub(struct mlx5_dev_ctx_shared *sh, uint16_t port_id)
8656 {
8657         struct mlx5_flow_tunnel_hub *thub = sh->tunnel_hub;
8658
8659         if (!thub)
8660                 return;
8661         if (!LIST_EMPTY(&thub->tunnels))
8662                 DRV_LOG(WARNING, "port %u tunnels present", port_id);
8663         mlx5_hlist_destroy(thub->groups);
8664         mlx5_free(thub);
8665 }
8666
8667 int mlx5_alloc_tunnel_hub(struct mlx5_dev_ctx_shared *sh)
8668 {
8669         int err;
8670         struct mlx5_flow_tunnel_hub *thub;
8671
8672         thub = mlx5_malloc(MLX5_MEM_SYS | MLX5_MEM_ZERO, sizeof(*thub),
8673                            0, SOCKET_ID_ANY);
8674         if (!thub)
8675                 return -ENOMEM;
8676         LIST_INIT(&thub->tunnels);
8677         rte_spinlock_init(&thub->sl);
8678         thub->groups = mlx5_hlist_create("flow groups",
8679                                          rte_align32pow2(MLX5_MAX_TABLES), 0,
8680                                          0, mlx5_flow_tunnel_grp2tbl_create_cb,
8681                                          mlx5_flow_tunnel_grp2tbl_match_cb,
8682                                          mlx5_flow_tunnel_grp2tbl_remove_cb);
8683         if (!thub->groups) {
8684                 err = -rte_errno;
8685                 goto err;
8686         }
8687         thub->groups->ctx = sh;
8688         sh->tunnel_hub = thub;
8689
8690         return 0;
8691
8692 err:
8693         if (thub->groups)
8694                 mlx5_hlist_destroy(thub->groups);
8695         if (thub)
8696                 mlx5_free(thub);
8697         return err;
8698 }
8699
8700 static inline bool
8701 mlx5_flow_tunnel_validate(struct rte_eth_dev *dev,
8702                           struct rte_flow_tunnel *tunnel,
8703                           const char *err_msg)
8704 {
8705         err_msg = NULL;
8706         if (!is_tunnel_offload_active(dev)) {
8707                 err_msg = "tunnel offload was not activated";
8708                 goto out;
8709         } else if (!tunnel) {
8710                 err_msg = "no application tunnel";
8711                 goto out;
8712         }
8713
8714         switch (tunnel->type) {
8715         default:
8716                 err_msg = "unsupported tunnel type";
8717                 goto out;
8718         case RTE_FLOW_ITEM_TYPE_VXLAN:
8719                 break;
8720         }
8721
8722 out:
8723         return !err_msg;
8724 }
8725
8726 static int
8727 mlx5_flow_tunnel_decap_set(struct rte_eth_dev *dev,
8728                     struct rte_flow_tunnel *app_tunnel,
8729                     struct rte_flow_action **actions,
8730                     uint32_t *num_of_actions,
8731                     struct rte_flow_error *error)
8732 {
8733         int ret;
8734         struct mlx5_flow_tunnel *tunnel;
8735         const char *err_msg = NULL;
8736         bool verdict = mlx5_flow_tunnel_validate(dev, app_tunnel, err_msg);
8737
8738         if (!verdict)
8739                 return rte_flow_error_set(error, EINVAL,
8740                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
8741                                           err_msg);
8742         ret = mlx5_get_flow_tunnel(dev, app_tunnel, &tunnel);
8743         if (ret < 0) {
8744                 return rte_flow_error_set(error, ret,
8745                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
8746                                           "failed to initialize pmd tunnel");
8747         }
8748         *actions = &tunnel->action;
8749         *num_of_actions = 1;
8750         return 0;
8751 }
8752
8753 static int
8754 mlx5_flow_tunnel_match(struct rte_eth_dev *dev,
8755                        struct rte_flow_tunnel *app_tunnel,
8756                        struct rte_flow_item **items,
8757                        uint32_t *num_of_items,
8758                        struct rte_flow_error *error)
8759 {
8760         int ret;
8761         struct mlx5_flow_tunnel *tunnel;
8762         const char *err_msg = NULL;
8763         bool verdict = mlx5_flow_tunnel_validate(dev, app_tunnel, err_msg);
8764
8765         if (!verdict)
8766                 return rte_flow_error_set(error, EINVAL,
8767                                           RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
8768                                           err_msg);
8769         ret = mlx5_get_flow_tunnel(dev, app_tunnel, &tunnel);
8770         if (ret < 0) {
8771                 return rte_flow_error_set(error, ret,
8772                                           RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
8773                                           "failed to initialize pmd tunnel");
8774         }
8775         *items = &tunnel->item;
8776         *num_of_items = 1;
8777         return 0;
8778 }
8779
8780 struct tunnel_db_element_release_ctx {
8781         struct rte_flow_item *items;
8782         struct rte_flow_action *actions;
8783         uint32_t num_elements;
8784         struct rte_flow_error *error;
8785         int ret;
8786 };
8787
8788 static bool
8789 tunnel_element_release_match(struct rte_eth_dev *dev,
8790                              struct mlx5_flow_tunnel *tunnel, const void *x)
8791 {
8792         const struct tunnel_db_element_release_ctx *ctx = x;
8793
8794         RTE_SET_USED(dev);
8795         if (ctx->num_elements != 1)
8796                 return false;
8797         else if (ctx->items)
8798                 return ctx->items == &tunnel->item;
8799         else if (ctx->actions)
8800                 return ctx->actions == &tunnel->action;
8801
8802         return false;
8803 }
8804
8805 static void
8806 tunnel_element_release_hit(struct rte_eth_dev *dev,
8807                            struct mlx5_flow_tunnel *tunnel, void *x)
8808 {
8809         struct tunnel_db_element_release_ctx *ctx = x;
8810         ctx->ret = 0;
8811         if (!__atomic_sub_fetch(&tunnel->refctn, 1, __ATOMIC_RELAXED))
8812                 mlx5_flow_tunnel_free(dev, tunnel);
8813 }
8814
8815 static void
8816 tunnel_element_release_miss(struct rte_eth_dev *dev, void *x)
8817 {
8818         struct tunnel_db_element_release_ctx *ctx = x;
8819         RTE_SET_USED(dev);
8820         ctx->ret = rte_flow_error_set(ctx->error, EINVAL,
8821                                       RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
8822                                       "invalid argument");
8823 }
8824
8825 static int
8826 mlx5_flow_tunnel_item_release(struct rte_eth_dev *dev,
8827                        struct rte_flow_item *pmd_items,
8828                        uint32_t num_items, struct rte_flow_error *err)
8829 {
8830         struct tunnel_db_element_release_ctx ctx = {
8831                 .items = pmd_items,
8832                 .actions = NULL,
8833                 .num_elements = num_items,
8834                 .error = err,
8835         };
8836
8837         mlx5_access_tunnel_offload_db(dev, tunnel_element_release_match,
8838                                       tunnel_element_release_hit,
8839                                       tunnel_element_release_miss, &ctx, false);
8840
8841         return ctx.ret;
8842 }
8843
8844 static int
8845 mlx5_flow_tunnel_action_release(struct rte_eth_dev *dev,
8846                          struct rte_flow_action *pmd_actions,
8847                          uint32_t num_actions, struct rte_flow_error *err)
8848 {
8849         struct tunnel_db_element_release_ctx ctx = {
8850                 .items = NULL,
8851                 .actions = pmd_actions,
8852                 .num_elements = num_actions,
8853                 .error = err,
8854         };
8855
8856         mlx5_access_tunnel_offload_db(dev, tunnel_element_release_match,
8857                                       tunnel_element_release_hit,
8858                                       tunnel_element_release_miss, &ctx, false);
8859
8860         return ctx.ret;
8861 }
8862
8863 static int
8864 mlx5_flow_tunnel_get_restore_info(struct rte_eth_dev *dev,
8865                                   struct rte_mbuf *m,
8866                                   struct rte_flow_restore_info *info,
8867                                   struct rte_flow_error *err)
8868 {
8869         uint64_t ol_flags = m->ol_flags;
8870         const struct mlx5_flow_tbl_data_entry *tble;
8871         const uint64_t mask = PKT_RX_FDIR | PKT_RX_FDIR_ID;
8872
8873         if (!is_tunnel_offload_active(dev)) {
8874                 info->flags = 0;
8875                 return 0;
8876         }
8877
8878         if ((ol_flags & mask) != mask)
8879                 goto err;
8880         tble = tunnel_mark_decode(dev, m->hash.fdir.hi);
8881         if (!tble) {
8882                 DRV_LOG(DEBUG, "port %u invalid miss tunnel mark %#x",
8883                         dev->data->port_id, m->hash.fdir.hi);
8884                 goto err;
8885         }
8886         MLX5_ASSERT(tble->tunnel);
8887         memcpy(&info->tunnel, &tble->tunnel->app_tunnel, sizeof(info->tunnel));
8888         info->group_id = tble->group_id;
8889         info->flags = RTE_FLOW_RESTORE_INFO_TUNNEL |
8890                       RTE_FLOW_RESTORE_INFO_GROUP_ID |
8891                       RTE_FLOW_RESTORE_INFO_ENCAPSULATED;
8892
8893         return 0;
8894
8895 err:
8896         return rte_flow_error_set(err, EINVAL,
8897                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
8898                                   "failed to get restore info");
8899 }
8900
8901 #else /* HAVE_IBV_FLOW_DV_SUPPORT */
8902 static int
8903 mlx5_flow_tunnel_decap_set(__rte_unused struct rte_eth_dev *dev,
8904                            __rte_unused struct rte_flow_tunnel *app_tunnel,
8905                            __rte_unused struct rte_flow_action **actions,
8906                            __rte_unused uint32_t *num_of_actions,
8907                            __rte_unused struct rte_flow_error *error)
8908 {
8909         return -ENOTSUP;
8910 }
8911
8912 static int
8913 mlx5_flow_tunnel_match(__rte_unused struct rte_eth_dev *dev,
8914                        __rte_unused struct rte_flow_tunnel *app_tunnel,
8915                        __rte_unused struct rte_flow_item **items,
8916                        __rte_unused uint32_t *num_of_items,
8917                        __rte_unused struct rte_flow_error *error)
8918 {
8919         return -ENOTSUP;
8920 }
8921
8922 static int
8923 mlx5_flow_tunnel_item_release(__rte_unused struct rte_eth_dev *dev,
8924                               __rte_unused struct rte_flow_item *pmd_items,
8925                               __rte_unused uint32_t num_items,
8926                               __rte_unused struct rte_flow_error *err)
8927 {
8928         return -ENOTSUP;
8929 }
8930
8931 static int
8932 mlx5_flow_tunnel_action_release(__rte_unused struct rte_eth_dev *dev,
8933                                 __rte_unused struct rte_flow_action *pmd_action,
8934                                 __rte_unused uint32_t num_actions,
8935                                 __rte_unused struct rte_flow_error *err)
8936 {
8937         return -ENOTSUP;
8938 }
8939
8940 static int
8941 mlx5_flow_tunnel_get_restore_info(__rte_unused struct rte_eth_dev *dev,
8942                                   __rte_unused struct rte_mbuf *m,
8943                                   __rte_unused struct rte_flow_restore_info *i,
8944                                   __rte_unused struct rte_flow_error *err)
8945 {
8946         return -ENOTSUP;
8947 }
8948
8949 static int
8950 flow_tunnel_add_default_miss(__rte_unused struct rte_eth_dev *dev,
8951                              __rte_unused struct rte_flow *flow,
8952                              __rte_unused const struct rte_flow_attr *attr,
8953                              __rte_unused const struct rte_flow_action *actions,
8954                              __rte_unused uint32_t flow_idx,
8955                              __rte_unused const struct mlx5_flow_tunnel *tunnel,
8956                              __rte_unused struct tunnel_default_miss_ctx *ctx,
8957                              __rte_unused struct rte_flow_error *error)
8958 {
8959         return -ENOTSUP;
8960 }
8961
8962 static struct mlx5_flow_tunnel *
8963 mlx5_find_tunnel_id(__rte_unused struct rte_eth_dev *dev,
8964                     __rte_unused uint32_t id)
8965 {
8966         return NULL;
8967 }
8968
8969 static void
8970 mlx5_flow_tunnel_free(__rte_unused struct rte_eth_dev *dev,
8971                       __rte_unused struct mlx5_flow_tunnel *tunnel)
8972 {
8973 }
8974
8975 static uint32_t
8976 tunnel_flow_group_to_flow_table(__rte_unused struct rte_eth_dev *dev,
8977                                 __rte_unused const struct mlx5_flow_tunnel *t,
8978                                 __rte_unused uint32_t group,
8979                                 __rte_unused uint32_t *table,
8980                                 struct rte_flow_error *error)
8981 {
8982         return rte_flow_error_set(error, ENOTSUP,
8983                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
8984                                   "tunnel offload requires DV support");
8985 }
8986
8987 void
8988 mlx5_release_tunnel_hub(__rte_unused struct mlx5_dev_ctx_shared *sh,
8989                         __rte_unused  uint16_t port_id)
8990 {
8991 }
8992 #endif /* HAVE_IBV_FLOW_DV_SUPPORT */