drivers/net/enic/enic_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2008-2017 Cisco Systems, Inc.  All rights reserved.
   3  */
   4
   5 #include <errno.h>
   6 #include <stdint.h>
   7 #include <rte_log.h>
   8 #include <rte_ethdev_driver.h>
   9 #include <rte_flow_driver.h>
  10 #include <rte_ether.h>
  11 #include <rte_ip.h>
  12 #include <rte_udp.h>
  13
  14 #include "enic_compat.h"
  15 #include "enic.h"
  16 #include "vnic_dev.h"
  17 #include "vnic_nic.h"
  18
  19 #define FLOW_TRACE() \
  20         rte_log(RTE_LOG_DEBUG, enicpmd_logtype_flow, \
  21                 "%s()\n", __func__)
  22 #define FLOW_LOG(level, fmt, args...) \
  23         rte_log(RTE_LOG_ ## level, enicpmd_logtype_flow, \
  24                 fmt "\n", ##args)
  25
  26 /*
  27  * Common arguments passed to copy_item functions. Use this structure
  28  * so we can easily add new arguments.
  29  * item: Item specification.
  30  * filter: Partially filled in NIC filter structure.
  31  * inner_ofst: If zero, this is an outer header. If non-zero, this is
  32  *   the offset into L5 where the header begins.
  33  * l2_proto_off: offset to EtherType eth or vlan header.
  34  * l3_proto_off: offset to next protocol field in IPv4 or 6 header.
  35  */
  36 struct copy_item_args {
  37         const struct rte_flow_item *item;
  38         struct filter_v2 *filter;
  39         uint8_t *inner_ofst;
  40         uint8_t l2_proto_off;
  41         uint8_t l3_proto_off;
  42         struct enic *enic;
  43 };
  44
  45 /* functions for copying items into enic filters */
  46 typedef int (enic_copy_item_fn)(struct copy_item_args *arg);
  47
  48 /** Info about how to copy items into enic filters. */
  49 struct enic_items {
  50         /** Function for copying and validating an item. */
  51         enic_copy_item_fn *copy_item;
  52         /** List of valid previous items. */
  53         const enum rte_flow_item_type * const prev_items;
  54         /** True if it's OK for this item to be the first item. For some NIC
  55          * versions, it's invalid to start the stack above layer 3.
  56          */
  57         const u8 valid_start_item;
  58         /* Inner packet version of copy_item. */
  59         enic_copy_item_fn *inner_copy_item;
  60 };
  61
  62 /** Filtering capabilities for various NIC and firmware versions. */
  63 struct enic_filter_cap {
  64         /** list of valid items and their handlers and attributes. */
  65         const struct enic_items *item_info;
  66         /* Max type in the above list, used to detect unsupported types */
  67         enum rte_flow_item_type max_item_type;
  68 };
  69
  70 /* functions for copying flow actions into enic actions */
  71 typedef int (copy_action_fn)(struct enic *enic,
  72                              const struct rte_flow_action actions[],
  73                              struct filter_action_v2 *enic_action);
  74
  75 /** Action capabilities for various NICs. */
  76 struct enic_action_cap {
  77         /** list of valid actions */
  78         const enum rte_flow_action_type *actions;
  79         /** copy function for a particular NIC */
  80         copy_action_fn *copy_fn;
  81 };
  82
  83 /* Forward declarations */
  84 static enic_copy_item_fn enic_copy_item_ipv4_v1;
  85 static enic_copy_item_fn enic_copy_item_udp_v1;
  86 static enic_copy_item_fn enic_copy_item_tcp_v1;
  87 static enic_copy_item_fn enic_copy_item_raw_v2;
  88 static enic_copy_item_fn enic_copy_item_eth_v2;
  89 static enic_copy_item_fn enic_copy_item_vlan_v2;
  90 static enic_copy_item_fn enic_copy_item_ipv4_v2;
  91 static enic_copy_item_fn enic_copy_item_ipv6_v2;
  92 static enic_copy_item_fn enic_copy_item_udp_v2;
  93 static enic_copy_item_fn enic_copy_item_tcp_v2;
  94 static enic_copy_item_fn enic_copy_item_sctp_v2;
  95 static enic_copy_item_fn enic_copy_item_vxlan_v2;
  96 static enic_copy_item_fn enic_copy_item_inner_eth_v2;
  97 static enic_copy_item_fn enic_copy_item_inner_vlan_v2;
  98 static enic_copy_item_fn enic_copy_item_inner_ipv4_v2;
  99 static enic_copy_item_fn enic_copy_item_inner_ipv6_v2;
 100 static enic_copy_item_fn enic_copy_item_inner_udp_v2;
 101 static enic_copy_item_fn enic_copy_item_inner_tcp_v2;
 102 static copy_action_fn enic_copy_action_v1;
 103 static copy_action_fn enic_copy_action_v2;
 104
 105 /**
 106  * Legacy NICs or NICs with outdated firmware. Only 5-tuple perfect match
 107  * is supported.
 108  */
 109 static const struct enic_items enic_items_v1[] = {
 110         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 111                 .copy_item = enic_copy_item_ipv4_v1,
 112                 .valid_start_item = 1,
 113                 .prev_items = (const enum rte_flow_item_type[]) {
 114                                RTE_FLOW_ITEM_TYPE_END,
 115                 },
 116                 .inner_copy_item = NULL,
 117         },
 118         [RTE_FLOW_ITEM_TYPE_UDP] = {
 119                 .copy_item = enic_copy_item_udp_v1,
 120                 .valid_start_item = 0,
 121                 .prev_items = (const enum rte_flow_item_type[]) {
 122                                RTE_FLOW_ITEM_TYPE_IPV4,
 123                                RTE_FLOW_ITEM_TYPE_END,
 124                 },
 125                 .inner_copy_item = NULL,
 126         },
 127         [RTE_FLOW_ITEM_TYPE_TCP] = {
 128                 .copy_item = enic_copy_item_tcp_v1,
 129                 .valid_start_item = 0,
 130                 .prev_items = (const enum rte_flow_item_type[]) {
 131                                RTE_FLOW_ITEM_TYPE_IPV4,
 132                                RTE_FLOW_ITEM_TYPE_END,
 133                 },
 134                 .inner_copy_item = NULL,
 135         },
 136 };
 137
 138 /**
 139  * NICs have Advanced Filters capability but they are disabled. This means
 140  * that layer 3 must be specified.
 141  */
 142 static const struct enic_items enic_items_v2[] = {
 143         [RTE_FLOW_ITEM_TYPE_RAW] = {
 144                 .copy_item = enic_copy_item_raw_v2,
 145                 .valid_start_item = 0,
 146                 .prev_items = (const enum rte_flow_item_type[]) {
 147                                RTE_FLOW_ITEM_TYPE_UDP,
 148                                RTE_FLOW_ITEM_TYPE_END,
 149                 },
 150                 .inner_copy_item = NULL,
 151         },
 152         [RTE_FLOW_ITEM_TYPE_ETH] = {
 153                 .copy_item = enic_copy_item_eth_v2,
 154                 .valid_start_item = 1,
 155                 .prev_items = (const enum rte_flow_item_type[]) {
 156                                RTE_FLOW_ITEM_TYPE_VXLAN,
 157                                RTE_FLOW_ITEM_TYPE_END,
 158                 },
 159                 .inner_copy_item = enic_copy_item_inner_eth_v2,
 160         },
 161         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 162                 .copy_item = enic_copy_item_vlan_v2,
 163                 .valid_start_item = 1,
 164                 .prev_items = (const enum rte_flow_item_type[]) {
 165                                RTE_FLOW_ITEM_TYPE_ETH,
 166                                RTE_FLOW_ITEM_TYPE_END,
 167                 },
 168                 .inner_copy_item = enic_copy_item_inner_vlan_v2,
 169         },
 170         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 171                 .copy_item = enic_copy_item_ipv4_v2,
 172                 .valid_start_item = 1,
 173                 .prev_items = (const enum rte_flow_item_type[]) {
 174                                RTE_FLOW_ITEM_TYPE_ETH,
 175                                RTE_FLOW_ITEM_TYPE_VLAN,
 176                                RTE_FLOW_ITEM_TYPE_END,
 177                 },
 178                 .inner_copy_item = enic_copy_item_inner_ipv4_v2,
 179         },
 180         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 181                 .copy_item = enic_copy_item_ipv6_v2,
 182                 .valid_start_item = 1,
 183                 .prev_items = (const enum rte_flow_item_type[]) {
 184                                RTE_FLOW_ITEM_TYPE_ETH,
 185                                RTE_FLOW_ITEM_TYPE_VLAN,
 186                                RTE_FLOW_ITEM_TYPE_END,
 187                 },
 188                 .inner_copy_item = enic_copy_item_inner_ipv6_v2,
 189         },
 190         [RTE_FLOW_ITEM_TYPE_UDP] = {
 191                 .copy_item = enic_copy_item_udp_v2,
 192                 .valid_start_item = 0,
 193                 .prev_items = (const enum rte_flow_item_type[]) {
 194                                RTE_FLOW_ITEM_TYPE_IPV4,
 195                                RTE_FLOW_ITEM_TYPE_IPV6,
 196                                RTE_FLOW_ITEM_TYPE_END,
 197                 },
 198                 .inner_copy_item = enic_copy_item_inner_udp_v2,
 199         },
 200         [RTE_FLOW_ITEM_TYPE_TCP] = {
 201                 .copy_item = enic_copy_item_tcp_v2,
 202                 .valid_start_item = 0,
 203                 .prev_items = (const enum rte_flow_item_type[]) {
 204                                RTE_FLOW_ITEM_TYPE_IPV4,
 205                                RTE_FLOW_ITEM_TYPE_IPV6,
 206                                RTE_FLOW_ITEM_TYPE_END,
 207                 },
 208                 .inner_copy_item = enic_copy_item_inner_tcp_v2,
 209         },
 210         [RTE_FLOW_ITEM_TYPE_SCTP] = {
 211                 .copy_item = enic_copy_item_sctp_v2,
 212                 .valid_start_item = 0,
 213                 .prev_items = (const enum rte_flow_item_type[]) {
 214                                RTE_FLOW_ITEM_TYPE_IPV4,
 215                                RTE_FLOW_ITEM_TYPE_IPV6,
 216                                RTE_FLOW_ITEM_TYPE_END,
 217                 },
 218                 .inner_copy_item = NULL,
 219         },
 220         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 221                 .copy_item = enic_copy_item_vxlan_v2,
 222                 .valid_start_item = 0,
 223                 .prev_items = (const enum rte_flow_item_type[]) {
 224                                RTE_FLOW_ITEM_TYPE_UDP,
 225                                RTE_FLOW_ITEM_TYPE_END,
 226                 },
 227                 .inner_copy_item = NULL,
 228         },
 229 };
 230
 231 /** NICs with Advanced filters enabled */
 232 static const struct enic_items enic_items_v3[] = {
 233         [RTE_FLOW_ITEM_TYPE_RAW] = {
 234                 .copy_item = enic_copy_item_raw_v2,
 235                 .valid_start_item = 0,
 236                 .prev_items = (const enum rte_flow_item_type[]) {
 237                                RTE_FLOW_ITEM_TYPE_UDP,
 238                                RTE_FLOW_ITEM_TYPE_END,
 239                 },
 240                 .inner_copy_item = NULL,
 241         },
 242         [RTE_FLOW_ITEM_TYPE_ETH] = {
 243                 .copy_item = enic_copy_item_eth_v2,
 244                 .valid_start_item = 1,
 245                 .prev_items = (const enum rte_flow_item_type[]) {
 246                                RTE_FLOW_ITEM_TYPE_VXLAN,
 247                                RTE_FLOW_ITEM_TYPE_END,
 248                 },
 249                 .inner_copy_item = enic_copy_item_inner_eth_v2,
 250         },
 251         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 252                 .copy_item = enic_copy_item_vlan_v2,
 253                 .valid_start_item = 1,
 254                 .prev_items = (const enum rte_flow_item_type[]) {
 255                                RTE_FLOW_ITEM_TYPE_ETH,
 256                                RTE_FLOW_ITEM_TYPE_END,
 257                 },
 258                 .inner_copy_item = enic_copy_item_inner_vlan_v2,
 259         },
 260         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 261                 .copy_item = enic_copy_item_ipv4_v2,
 262                 .valid_start_item = 1,
 263                 .prev_items = (const enum rte_flow_item_type[]) {
 264                                RTE_FLOW_ITEM_TYPE_ETH,
 265                                RTE_FLOW_ITEM_TYPE_VLAN,
 266                                RTE_FLOW_ITEM_TYPE_END,
 267                 },
 268                 .inner_copy_item = enic_copy_item_inner_ipv4_v2,
 269         },
 270         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 271                 .copy_item = enic_copy_item_ipv6_v2,
 272                 .valid_start_item = 1,
 273                 .prev_items = (const enum rte_flow_item_type[]) {
 274                                RTE_FLOW_ITEM_TYPE_ETH,
 275                                RTE_FLOW_ITEM_TYPE_VLAN,
 276                                RTE_FLOW_ITEM_TYPE_END,
 277                 },
 278                 .inner_copy_item = enic_copy_item_inner_ipv6_v2,
 279         },
 280         [RTE_FLOW_ITEM_TYPE_UDP] = {
 281                 .copy_item = enic_copy_item_udp_v2,
 282                 .valid_start_item = 1,
 283                 .prev_items = (const enum rte_flow_item_type[]) {
 284                                RTE_FLOW_ITEM_TYPE_IPV4,
 285                                RTE_FLOW_ITEM_TYPE_IPV6,
 286                                RTE_FLOW_ITEM_TYPE_END,
 287                 },
 288                 .inner_copy_item = enic_copy_item_inner_udp_v2,
 289         },
 290         [RTE_FLOW_ITEM_TYPE_TCP] = {
 291                 .copy_item = enic_copy_item_tcp_v2,
 292                 .valid_start_item = 1,
 293                 .prev_items = (const enum rte_flow_item_type[]) {
 294                                RTE_FLOW_ITEM_TYPE_IPV4,
 295                                RTE_FLOW_ITEM_TYPE_IPV6,
 296                                RTE_FLOW_ITEM_TYPE_END,
 297                 },
 298                 .inner_copy_item = enic_copy_item_inner_tcp_v2,
 299         },
 300         [RTE_FLOW_ITEM_TYPE_SCTP] = {
 301                 .copy_item = enic_copy_item_sctp_v2,
 302                 .valid_start_item = 0,
 303                 .prev_items = (const enum rte_flow_item_type[]) {
 304                                RTE_FLOW_ITEM_TYPE_IPV4,
 305                                RTE_FLOW_ITEM_TYPE_IPV6,
 306                                RTE_FLOW_ITEM_TYPE_END,
 307                 },
 308                 .inner_copy_item = NULL,
 309         },
 310         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 311                 .copy_item = enic_copy_item_vxlan_v2,
 312                 .valid_start_item = 1,
 313                 .prev_items = (const enum rte_flow_item_type[]) {
 314                                RTE_FLOW_ITEM_TYPE_UDP,
 315                                RTE_FLOW_ITEM_TYPE_END,
 316                 },
 317                 .inner_copy_item = NULL,
 318         },
 319 };
 320
 321 /** Filtering capabilities indexed this NICs supported filter type. */
 322 static const struct enic_filter_cap enic_filter_cap[] = {
 323         [FILTER_IPV4_5TUPLE] = {
 324                 .item_info = enic_items_v1,
 325                 .max_item_type = RTE_FLOW_ITEM_TYPE_TCP,
 326         },
 327         [FILTER_USNIC_IP] = {
 328                 .item_info = enic_items_v2,
 329                 .max_item_type = RTE_FLOW_ITEM_TYPE_VXLAN,
 330         },
 331         [FILTER_DPDK_1] = {
 332                 .item_info = enic_items_v3,
 333                 .max_item_type = RTE_FLOW_ITEM_TYPE_VXLAN,
 334         },
 335 };
 336
 337 /** Supported actions for older NICs */
 338 static const enum rte_flow_action_type enic_supported_actions_v1[] = {
 339         RTE_FLOW_ACTION_TYPE_QUEUE,
 340         RTE_FLOW_ACTION_TYPE_END,
 341 };
 342
 343 /** Supported actions for newer NICs */
 344 static const enum rte_flow_action_type enic_supported_actions_v2_id[] = {
 345         RTE_FLOW_ACTION_TYPE_QUEUE,
 346         RTE_FLOW_ACTION_TYPE_MARK,
 347         RTE_FLOW_ACTION_TYPE_FLAG,
 348         RTE_FLOW_ACTION_TYPE_RSS,
 349         RTE_FLOW_ACTION_TYPE_PASSTHRU,
 350         RTE_FLOW_ACTION_TYPE_END,
 351 };
 352
 353 static const enum rte_flow_action_type enic_supported_actions_v2_drop[] = {
 354         RTE_FLOW_ACTION_TYPE_QUEUE,
 355         RTE_FLOW_ACTION_TYPE_MARK,
 356         RTE_FLOW_ACTION_TYPE_FLAG,
 357         RTE_FLOW_ACTION_TYPE_DROP,
 358         RTE_FLOW_ACTION_TYPE_RSS,
 359         RTE_FLOW_ACTION_TYPE_PASSTHRU,
 360         RTE_FLOW_ACTION_TYPE_END,
 361 };
 362
 363 /** Action capabilities indexed by NIC version information */
 364 static const struct enic_action_cap enic_action_cap[] = {
 365         [FILTER_ACTION_RQ_STEERING_FLAG] = {
 366                 .actions = enic_supported_actions_v1,
 367                 .copy_fn = enic_copy_action_v1,
 368         },
 369         [FILTER_ACTION_FILTER_ID_FLAG] = {
 370                 .actions = enic_supported_actions_v2_id,
 371                 .copy_fn = enic_copy_action_v2,
 372         },
 373         [FILTER_ACTION_DROP_FLAG] = {
 374                 .actions = enic_supported_actions_v2_drop,
 375                 .copy_fn = enic_copy_action_v2,
 376         },
 377 };
 378
 379 static int
 380 mask_exact_match(const u8 *supported, const u8 *supplied,
 381                  unsigned int size)
 382 {
 383         unsigned int i;
 384         for (i = 0; i < size; i++) {
 385                 if (supported[i] != supplied[i])
 386                         return 0;
 387         }
 388         return 1;
 389 }
 390
 391 static int
 392 enic_copy_item_ipv4_v1(struct copy_item_args *arg)
 393 {
 394         const struct rte_flow_item *item = arg->item;
 395         struct filter_v2 *enic_filter = arg->filter;
 396         const struct rte_flow_item_ipv4 *spec = item->spec;
 397         const struct rte_flow_item_ipv4 *mask = item->mask;
 398         struct filter_ipv4_5tuple *enic_5tup = &enic_filter->u.ipv4;
 399         struct rte_ipv4_hdr supported_mask = {
 400                 .src_addr = 0xffffffff,
 401                 .dst_addr = 0xffffffff,
 402         };
 403
 404         FLOW_TRACE();
 405
 406         if (!mask)
 407                 mask = &rte_flow_item_ipv4_mask;
 408
 409         /* This is an exact match filter, both fields must be set */
 410         if (!spec || !spec->hdr.src_addr || !spec->hdr.dst_addr) {
 411                 FLOW_LOG(ERR, "IPv4 exact match src/dst addr");
 412                 return ENOTSUP;
 413         }
 414
 415         /* check that the suppied mask exactly matches capabilty */
 416         if (!mask_exact_match((const u8 *)&supported_mask,
 417                               (const u8 *)item->mask, sizeof(*mask))) {
 418                 FLOW_LOG(ERR, "IPv4 exact match mask");
 419                 return ENOTSUP;
 420         }
 421
 422         enic_filter->u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
 423         enic_5tup->src_addr = spec->hdr.src_addr;
 424         enic_5tup->dst_addr = spec->hdr.dst_addr;
 425
 426         return 0;
 427 }
 428
 429 static int
 430 enic_copy_item_udp_v1(struct copy_item_args *arg)
 431 {
 432         const struct rte_flow_item *item = arg->item;
 433         struct filter_v2 *enic_filter = arg->filter;
 434         const struct rte_flow_item_udp *spec = item->spec;
 435         const struct rte_flow_item_udp *mask = item->mask;
 436         struct filter_ipv4_5tuple *enic_5tup = &enic_filter->u.ipv4;
 437         struct rte_udp_hdr supported_mask = {
 438                 .src_port = 0xffff,
 439                 .dst_port = 0xffff,
 440         };
 441
 442         FLOW_TRACE();
 443
 444         if (!mask)
 445                 mask = &rte_flow_item_udp_mask;
 446
 447         /* This is an exact match filter, both ports must be set */
 448         if (!spec || !spec->hdr.src_port || !spec->hdr.dst_port) {
 449                 FLOW_LOG(ERR, "UDP exact match src/dst addr");
 450                 return ENOTSUP;
 451         }
 452
 453         /* check that the suppied mask exactly matches capabilty */
 454         if (!mask_exact_match((const u8 *)&supported_mask,
 455                               (const u8 *)item->mask, sizeof(*mask))) {
 456                 FLOW_LOG(ERR, "UDP exact match mask");
 457                 return ENOTSUP;
 458         }
 459
 460         enic_filter->u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
 461         enic_5tup->src_port = spec->hdr.src_port;
 462         enic_5tup->dst_port = spec->hdr.dst_port;
 463         enic_5tup->protocol = PROTO_UDP;
 464
 465         return 0;
 466 }
 467
 468 static int
 469 enic_copy_item_tcp_v1(struct copy_item_args *arg)
 470 {
 471         const struct rte_flow_item *item = arg->item;
 472         struct filter_v2 *enic_filter = arg->filter;
 473         const struct rte_flow_item_tcp *spec = item->spec;
 474         const struct rte_flow_item_tcp *mask = item->mask;
 475         struct filter_ipv4_5tuple *enic_5tup = &enic_filter->u.ipv4;
 476         struct rte_tcp_hdr supported_mask = {
 477                 .src_port = 0xffff,
 478                 .dst_port = 0xffff,
 479         };
 480
 481         FLOW_TRACE();
 482
 483         if (!mask)
 484                 mask = &rte_flow_item_tcp_mask;
 485
 486         /* This is an exact match filter, both ports must be set */
 487         if (!spec || !spec->hdr.src_port || !spec->hdr.dst_port) {
 488                 FLOW_LOG(ERR, "TCPIPv4 exact match src/dst addr");
 489                 return ENOTSUP;
 490         }
 491
 492         /* check that the suppied mask exactly matches capabilty */
 493         if (!mask_exact_match((const u8 *)&supported_mask,
 494                              (const u8 *)item->mask, sizeof(*mask))) {
 495                 FLOW_LOG(ERR, "TCP exact match mask");
 496                 return ENOTSUP;
 497         }
 498
 499         enic_filter->u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
 500         enic_5tup->src_port = spec->hdr.src_port;
 501         enic_5tup->dst_port = spec->hdr.dst_port;
 502         enic_5tup->protocol = PROTO_TCP;
 503
 504         return 0;
 505 }
 506
 507 /*
 508  * The common 'copy' function for all inner packet patterns. Patterns are
 509  * first appended to the L5 pattern buffer. Then, since the NIC filter
 510  * API has no special support for inner packet matching at the moment,
 511  * we set EtherType and IP proto as necessary.
 512  */
 513 static int
 514 copy_inner_common(struct filter_generic_1 *gp, uint8_t *inner_ofst,
 515                   const void *val, const void *mask, uint8_t val_size,
 516                   uint8_t proto_off, uint16_t proto_val, uint8_t proto_size)
 517 {
 518         uint8_t *l5_mask, *l5_val;
 519         uint8_t start_off;
 520
 521         /* No space left in the L5 pattern buffer. */
 522         start_off = *inner_ofst;
 523         if ((start_off + val_size) > FILTER_GENERIC_1_KEY_LEN)
 524                 return ENOTSUP;
 525         l5_mask = gp->layer[FILTER_GENERIC_1_L5].mask;
 526         l5_val = gp->layer[FILTER_GENERIC_1_L5].val;
 527         /* Copy the pattern into the L5 buffer. */
 528         if (val) {
 529                 memcpy(l5_mask + start_off, mask, val_size);
 530                 memcpy(l5_val + start_off, val, val_size);
 531         }
 532         /* Set the protocol field in the previous header. */
 533         if (proto_off) {
 534                 void *m, *v;
 535
 536                 m = l5_mask + proto_off;
 537                 v = l5_val + proto_off;
 538                 if (proto_size == 1) {
 539                         *(uint8_t *)m = 0xff;
 540                         *(uint8_t *)v = (uint8_t)proto_val;
 541                 } else if (proto_size == 2) {
 542                         *(uint16_t *)m = 0xffff;
 543                         *(uint16_t *)v = proto_val;
 544                 }
 545         }
 546         /* All inner headers land in L5 buffer even if their spec is null. */
 547         *inner_ofst += val_size;
 548         return 0;
 549 }
 550
 551 static int
 552 enic_copy_item_inner_eth_v2(struct copy_item_args *arg)
 553 {
 554         const void *mask = arg->item->mask;
 555         uint8_t *off = arg->inner_ofst;
 556
 557         FLOW_TRACE();
 558         if (!mask)
 559                 mask = &rte_flow_item_eth_mask;
 560         arg->l2_proto_off = *off + offsetof(struct rte_ether_hdr, ether_type);
 561         return copy_inner_common(&arg->filter->u.generic_1, off,
 562                 arg->item->spec, mask, sizeof(struct rte_ether_hdr),
 563                 0 /* no previous protocol */, 0, 0);
 564 }
 565
 566 static int
 567 enic_copy_item_inner_vlan_v2(struct copy_item_args *arg)
 568 {
 569         const void *mask = arg->item->mask;
 570         uint8_t *off = arg->inner_ofst;
 571         uint8_t eth_type_off;
 572
 573         FLOW_TRACE();
 574         if (!mask)
 575                 mask = &rte_flow_item_vlan_mask;
 576         /* Append vlan header to L5 and set ether type = TPID */
 577         eth_type_off = arg->l2_proto_off;
 578         arg->l2_proto_off = *off + offsetof(struct rte_vlan_hdr, eth_proto);
 579         return copy_inner_common(&arg->filter->u.generic_1, off,
 580                 arg->item->spec, mask, sizeof(struct rte_vlan_hdr),
 581                 eth_type_off, rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN), 2);
 582 }
 583
 584 static int
 585 enic_copy_item_inner_ipv4_v2(struct copy_item_args *arg)
 586 {
 587         const void *mask = arg->item->mask;
 588         uint8_t *off = arg->inner_ofst;
 589
 590         FLOW_TRACE();
 591         if (!mask)
 592                 mask = &rte_flow_item_ipv4_mask;
 593         /* Append ipv4 header to L5 and set ether type = ipv4 */
 594         arg->l3_proto_off = *off + offsetof(struct rte_ipv4_hdr, next_proto_id);
 595         return copy_inner_common(&arg->filter->u.generic_1, off,
 596                 arg->item->spec, mask, sizeof(struct rte_ipv4_hdr),
 597                 arg->l2_proto_off, rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4), 2);
 598 }
 599
 600 static int
 601 enic_copy_item_inner_ipv6_v2(struct copy_item_args *arg)
 602 {
 603         const void *mask = arg->item->mask;
 604         uint8_t *off = arg->inner_ofst;
 605
 606         FLOW_TRACE();
 607         if (!mask)
 608                 mask = &rte_flow_item_ipv6_mask;
 609         /* Append ipv6 header to L5 and set ether type = ipv6 */
 610         arg->l3_proto_off = *off + offsetof(struct rte_ipv6_hdr, proto);
 611         return copy_inner_common(&arg->filter->u.generic_1, off,
 612                 arg->item->spec, mask, sizeof(struct rte_ipv6_hdr),
 613                 arg->l2_proto_off, rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6), 2);
 614 }
 615
 616 static int
 617 enic_copy_item_inner_udp_v2(struct copy_item_args *arg)
 618 {
 619         const void *mask = arg->item->mask;
 620         uint8_t *off = arg->inner_ofst;
 621
 622         FLOW_TRACE();
 623         if (!mask)
 624                 mask = &rte_flow_item_udp_mask;
 625         /* Append udp header to L5 and set ip proto = udp */
 626         return copy_inner_common(&arg->filter->u.generic_1, off,
 627                 arg->item->spec, mask, sizeof(struct rte_udp_hdr),
 628                 arg->l3_proto_off, IPPROTO_UDP, 1);
 629 }
 630
 631 static int
 632 enic_copy_item_inner_tcp_v2(struct copy_item_args *arg)
 633 {
 634         const void *mask = arg->item->mask;
 635         uint8_t *off = arg->inner_ofst;
 636
 637         FLOW_TRACE();
 638         if (!mask)
 639                 mask = &rte_flow_item_tcp_mask;
 640         /* Append tcp header to L5 and set ip proto = tcp */
 641         return copy_inner_common(&arg->filter->u.generic_1, off,
 642                 arg->item->spec, mask, sizeof(struct rte_tcp_hdr),
 643                 arg->l3_proto_off, IPPROTO_TCP, 1);
 644 }
 645
 646 static int
 647 enic_copy_item_eth_v2(struct copy_item_args *arg)
 648 {
 649         const struct rte_flow_item *item = arg->item;
 650         struct filter_v2 *enic_filter = arg->filter;
 651         struct rte_ether_hdr enic_spec;
 652         struct rte_ether_hdr enic_mask;
 653         const struct rte_flow_item_eth *spec = item->spec;
 654         const struct rte_flow_item_eth *mask = item->mask;
 655         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 656
 657         FLOW_TRACE();
 658
 659         /* Match all if no spec */
 660         if (!spec)
 661                 return 0;
 662
 663         if (!mask)
 664                 mask = &rte_flow_item_eth_mask;
 665
 666         memcpy(enic_spec.d_addr.addr_bytes, spec->dst.addr_bytes,
 667                RTE_ETHER_ADDR_LEN);
 668         memcpy(enic_spec.s_addr.addr_bytes, spec->src.addr_bytes,
 669                RTE_ETHER_ADDR_LEN);
 670
 671         memcpy(enic_mask.d_addr.addr_bytes, mask->dst.addr_bytes,
 672                RTE_ETHER_ADDR_LEN);
 673         memcpy(enic_mask.s_addr.addr_bytes, mask->src.addr_bytes,
 674                RTE_ETHER_ADDR_LEN);
 675         enic_spec.ether_type = spec->type;
 676         enic_mask.ether_type = mask->type;
 677
 678         /* outer header */
 679         memcpy(gp->layer[FILTER_GENERIC_1_L2].mask, &enic_mask,
 680                sizeof(struct rte_ether_hdr));
 681         memcpy(gp->layer[FILTER_GENERIC_1_L2].val, &enic_spec,
 682                sizeof(struct rte_ether_hdr));
 683         return 0;
 684 }
 685
 686 static int
 687 enic_copy_item_vlan_v2(struct copy_item_args *arg)
 688 {
 689         const struct rte_flow_item *item = arg->item;
 690         struct filter_v2 *enic_filter = arg->filter;
 691         const struct rte_flow_item_vlan *spec = item->spec;
 692         const struct rte_flow_item_vlan *mask = item->mask;
 693         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 694         struct rte_ether_hdr *eth_mask;
 695         struct rte_ether_hdr *eth_val;
 696
 697         FLOW_TRACE();
 698
 699         /* Match all if no spec */
 700         if (!spec)
 701                 return 0;
 702
 703         if (!mask)
 704                 mask = &rte_flow_item_vlan_mask;
 705
 706         eth_mask = (void *)gp->layer[FILTER_GENERIC_1_L2].mask;
 707         eth_val = (void *)gp->layer[FILTER_GENERIC_1_L2].val;
 708         /* Outer TPID cannot be matched */
 709         if (eth_mask->ether_type)
 710                 return ENOTSUP;
 711         /*
 712          * For recent models:
 713          * When packet matching, the VIC always compares vlan-stripped
 714          * L2, regardless of vlan stripping settings. So, the inner type
 715          * from vlan becomes the ether type of the eth header.
 716          *
 717          * Older models w/o hardware vxlan parser have a different
 718          * behavior when vlan stripping is disabled. In this case,
 719          * vlan tag remains in the L2 buffer.
 720          */
 721         if (!arg->enic->vxlan && !arg->enic->ig_vlan_strip_en) {
 722                 struct rte_vlan_hdr *vlan;
 723
 724                 vlan = (struct rte_vlan_hdr *)(eth_mask + 1);
 725                 vlan->eth_proto = mask->inner_type;
 726                 vlan = (struct rte_vlan_hdr *)(eth_val + 1);
 727                 vlan->eth_proto = spec->inner_type;
 728         } else {
 729                 eth_mask->ether_type = mask->inner_type;
 730                 eth_val->ether_type = spec->inner_type;
 731         }
 732         /* For TCI, use the vlan mask/val fields (little endian). */
 733         gp->mask_vlan = rte_be_to_cpu_16(mask->tci);
 734         gp->val_vlan = rte_be_to_cpu_16(spec->tci);
 735         return 0;
 736 }
 737
 738 static int
 739 enic_copy_item_ipv4_v2(struct copy_item_args *arg)
 740 {
 741         const struct rte_flow_item *item = arg->item;
 742         struct filter_v2 *enic_filter = arg->filter;
 743         const struct rte_flow_item_ipv4 *spec = item->spec;
 744         const struct rte_flow_item_ipv4 *mask = item->mask;
 745         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 746
 747         FLOW_TRACE();
 748
 749         /* Match IPv4 */
 750         gp->mask_flags |= FILTER_GENERIC_1_IPV4;
 751         gp->val_flags |= FILTER_GENERIC_1_IPV4;
 752
 753         /* Match all if no spec */
 754         if (!spec)
 755                 return 0;
 756
 757         if (!mask)
 758                 mask = &rte_flow_item_ipv4_mask;
 759
 760         memcpy(gp->layer[FILTER_GENERIC_1_L3].mask, &mask->hdr,
 761                sizeof(struct rte_ipv4_hdr));
 762         memcpy(gp->layer[FILTER_GENERIC_1_L3].val, &spec->hdr,
 763                sizeof(struct rte_ipv4_hdr));
 764         return 0;
 765 }
 766
 767 static int
 768 enic_copy_item_ipv6_v2(struct copy_item_args *arg)
 769 {
 770         const struct rte_flow_item *item = arg->item;
 771         struct filter_v2 *enic_filter = arg->filter;
 772         const struct rte_flow_item_ipv6 *spec = item->spec;
 773         const struct rte_flow_item_ipv6 *mask = item->mask;
 774         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 775
 776         FLOW_TRACE();
 777
 778         /* Match IPv6 */
 779         gp->mask_flags |= FILTER_GENERIC_1_IPV6;
 780         gp->val_flags |= FILTER_GENERIC_1_IPV6;
 781
 782         /* Match all if no spec */
 783         if (!spec)
 784                 return 0;
 785
 786         if (!mask)
 787                 mask = &rte_flow_item_ipv6_mask;
 788
 789         memcpy(gp->layer[FILTER_GENERIC_1_L3].mask, &mask->hdr,
 790                sizeof(struct rte_ipv6_hdr));
 791         memcpy(gp->layer[FILTER_GENERIC_1_L3].val, &spec->hdr,
 792                sizeof(struct rte_ipv6_hdr));
 793         return 0;
 794 }
 795
 796 static int
 797 enic_copy_item_udp_v2(struct copy_item_args *arg)
 798 {
 799         const struct rte_flow_item *item = arg->item;
 800         struct filter_v2 *enic_filter = arg->filter;
 801         const struct rte_flow_item_udp *spec = item->spec;
 802         const struct rte_flow_item_udp *mask = item->mask;
 803         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 804
 805         FLOW_TRACE();
 806
 807         /* Match UDP */
 808         gp->mask_flags |= FILTER_GENERIC_1_UDP;
 809         gp->val_flags |= FILTER_GENERIC_1_UDP;
 810
 811         /* Match all if no spec */
 812         if (!spec)
 813                 return 0;
 814
 815         if (!mask)
 816                 mask = &rte_flow_item_udp_mask;
 817
 818         memcpy(gp->layer[FILTER_GENERIC_1_L4].mask, &mask->hdr,
 819                sizeof(struct rte_udp_hdr));
 820         memcpy(gp->layer[FILTER_GENERIC_1_L4].val, &spec->hdr,
 821                sizeof(struct rte_udp_hdr));
 822         return 0;
 823 }
 824
 825 static int
 826 enic_copy_item_tcp_v2(struct copy_item_args *arg)
 827 {
 828         const struct rte_flow_item *item = arg->item;
 829         struct filter_v2 *enic_filter = arg->filter;
 830         const struct rte_flow_item_tcp *spec = item->spec;
 831         const struct rte_flow_item_tcp *mask = item->mask;
 832         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 833
 834         FLOW_TRACE();
 835
 836         /* Match TCP */
 837         gp->mask_flags |= FILTER_GENERIC_1_TCP;
 838         gp->val_flags |= FILTER_GENERIC_1_TCP;
 839
 840         /* Match all if no spec */
 841         if (!spec)
 842                 return 0;
 843
 844         if (!mask)
 845                 return ENOTSUP;
 846
 847         memcpy(gp->layer[FILTER_GENERIC_1_L4].mask, &mask->hdr,
 848                sizeof(struct rte_tcp_hdr));
 849         memcpy(gp->layer[FILTER_GENERIC_1_L4].val, &spec->hdr,
 850                sizeof(struct rte_tcp_hdr));
 851         return 0;
 852 }
 853
 854 static int
 855 enic_copy_item_sctp_v2(struct copy_item_args *arg)
 856 {
 857         const struct rte_flow_item *item = arg->item;
 858         struct filter_v2 *enic_filter = arg->filter;
 859         const struct rte_flow_item_sctp *spec = item->spec;
 860         const struct rte_flow_item_sctp *mask = item->mask;
 861         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 862         uint8_t *ip_proto_mask = NULL;
 863         uint8_t *ip_proto = NULL;
 864
 865         FLOW_TRACE();
 866
 867         /*
 868          * The NIC filter API has no flags for "match sctp", so explicitly set
 869          * the protocol number in the IP pattern.
 870          */
 871         if (gp->val_flags & FILTER_GENERIC_1_IPV4) {
 872                 struct rte_ipv4_hdr *ip;
 873                 ip = (struct rte_ipv4_hdr *)gp->layer[FILTER_GENERIC_1_L3].mask;
 874                 ip_proto_mask = &ip->next_proto_id;
 875                 ip = (struct rte_ipv4_hdr *)gp->layer[FILTER_GENERIC_1_L3].val;
 876                 ip_proto = &ip->next_proto_id;
 877         } else if (gp->val_flags & FILTER_GENERIC_1_IPV6) {
 878                 struct rte_ipv6_hdr *ip;
 879                 ip = (struct rte_ipv6_hdr *)gp->layer[FILTER_GENERIC_1_L3].mask;
 880                 ip_proto_mask = &ip->proto;
 881                 ip = (struct rte_ipv6_hdr *)gp->layer[FILTER_GENERIC_1_L3].val;
 882                 ip_proto = &ip->proto;
 883         } else {
 884                 /* Need IPv4/IPv6 pattern first */
 885                 return EINVAL;
 886         }
 887         *ip_proto = IPPROTO_SCTP;
 888         *ip_proto_mask = 0xff;
 889
 890         /* Match all if no spec */
 891         if (!spec)
 892                 return 0;
 893
 894         if (!mask)
 895                 mask = &rte_flow_item_sctp_mask;
 896
 897         memcpy(gp->layer[FILTER_GENERIC_1_L4].mask, &mask->hdr,
 898                sizeof(struct rte_sctp_hdr));
 899         memcpy(gp->layer[FILTER_GENERIC_1_L4].val, &spec->hdr,
 900                sizeof(struct rte_sctp_hdr));
 901         return 0;
 902 }
 903
 904 static int
 905 enic_copy_item_vxlan_v2(struct copy_item_args *arg)
 906 {
 907         const struct rte_flow_item *item = arg->item;
 908         struct filter_v2 *enic_filter = arg->filter;
 909         uint8_t *inner_ofst = arg->inner_ofst;
 910         const struct rte_flow_item_vxlan *spec = item->spec;
 911         const struct rte_flow_item_vxlan *mask = item->mask;
 912         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 913         struct rte_udp_hdr *udp;
 914
 915         FLOW_TRACE();
 916
 917         /*
 918          * The NIC filter API has no flags for "match vxlan". Set UDP port to
 919          * avoid false positives.
 920          */
 921         gp->mask_flags |= FILTER_GENERIC_1_UDP;
 922         gp->val_flags |= FILTER_GENERIC_1_UDP;
 923         udp = (struct rte_udp_hdr *)gp->layer[FILTER_GENERIC_1_L4].mask;
 924         udp->dst_port = 0xffff;
 925         udp = (struct rte_udp_hdr *)gp->layer[FILTER_GENERIC_1_L4].val;
 926         udp->dst_port = RTE_BE16(4789);
 927         /* Match all if no spec */
 928         if (!spec)
 929                 return 0;
 930
 931         if (!mask)
 932                 mask = &rte_flow_item_vxlan_mask;
 933
 934         memcpy(gp->layer[FILTER_GENERIC_1_L5].mask, mask,
 935                sizeof(struct rte_vxlan_hdr));
 936         memcpy(gp->layer[FILTER_GENERIC_1_L5].val, spec,
 937                sizeof(struct rte_vxlan_hdr));
 938
 939         *inner_ofst = sizeof(struct rte_vxlan_hdr);
 940         return 0;
 941 }
 942
 943 /*
 944  * Copy raw item into version 2 NIC filter. Currently, raw pattern match is
 945  * very limited. It is intended for matching UDP tunnel header (e.g. vxlan
 946  * or geneve).
 947  */
 948 static int
 949 enic_copy_item_raw_v2(struct copy_item_args *arg)
 950 {
 951         const struct rte_flow_item *item = arg->item;
 952         struct filter_v2 *enic_filter = arg->filter;
 953         uint8_t *inner_ofst = arg->inner_ofst;
 954         const struct rte_flow_item_raw *spec = item->spec;
 955         const struct rte_flow_item_raw *mask = item->mask;
 956         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 957
 958         FLOW_TRACE();
 959
 960         /* Cannot be used for inner packet */
 961         if (*inner_ofst)
 962                 return EINVAL;
 963         /* Need both spec and mask */
 964         if (!spec || !mask)
 965                 return EINVAL;
 966         /* Only supports relative with offset 0 */
 967         if (!spec->relative || spec->offset != 0 || spec->search || spec->limit)
 968                 return EINVAL;
 969         /* Need non-null pattern that fits within the NIC's filter pattern */
 970         if (spec->length == 0 ||
 971             spec->length + sizeof(struct rte_udp_hdr) > FILTER_GENERIC_1_KEY_LEN ||
 972             !spec->pattern || !mask->pattern)
 973                 return EINVAL;
 974         /*
 975          * Mask fields, including length, are often set to zero. Assume that
 976          * means "same as spec" to avoid breaking existing apps. If length
 977          * is not zero, then it should be >= spec length.
 978          *
 979          * No more pattern follows this, so append to the L4 layer instead of
 980          * L5 to work with both recent and older VICs.
 981          */
 982         if (mask->length != 0 && mask->length < spec->length)
 983                 return EINVAL;
 984         memcpy(gp->layer[FILTER_GENERIC_1_L4].mask + sizeof(struct rte_udp_hdr),
 985                mask->pattern, spec->length);
 986         memcpy(gp->layer[FILTER_GENERIC_1_L4].val + sizeof(struct rte_udp_hdr),
 987                spec->pattern, spec->length);
 988
 989         return 0;
 990 }
 991
 992 /**
 993  * Return 1 if current item is valid on top of the previous one.
 994  *
 995  * @param prev_item[in]
 996  *   The item before this one in the pattern or RTE_FLOW_ITEM_TYPE_END if this
 997  *   is the first item.
 998  * @param item_info[in]
 999  *   Info about this item, like valid previous items.
1000  * @param is_first[in]
1001  *   True if this the first item in the pattern.
1002  */
1003 static int
1004 item_stacking_valid(enum rte_flow_item_type prev_item,
1005                     const struct enic_items *item_info, u8 is_first_item)
1006 {
1007         enum rte_flow_item_type const *allowed_items = item_info->prev_items;
1008
1009         FLOW_TRACE();
1010
1011         for (; *allowed_items != RTE_FLOW_ITEM_TYPE_END; allowed_items++) {
1012                 if (prev_item == *allowed_items)
1013                         return 1;
1014         }
1015
1016         /* This is the first item in the stack. Check if that's cool */
1017         if (is_first_item && item_info->valid_start_item)
1018                 return 1;
1019
1020         return 0;
1021 }
1022
1023 /*
1024  * Fix up the L5 layer.. HW vxlan parsing removes vxlan header from L5.
1025  * Instead it is in L4 following the UDP header. Append the vxlan
1026  * pattern to L4 (udp) and shift any inner packet pattern in L5.
1027  */
1028 static void
1029 fixup_l5_layer(struct enic *enic, struct filter_generic_1 *gp,
1030                uint8_t inner_ofst)
1031 {
1032         uint8_t layer[FILTER_GENERIC_1_KEY_LEN];
1033         uint8_t inner;
1034         uint8_t vxlan;
1035
1036         if (!(inner_ofst > 0 && enic->vxlan))
1037                 return;
1038         FLOW_TRACE();
1039         vxlan = sizeof(struct rte_vxlan_hdr);
1040         memcpy(gp->layer[FILTER_GENERIC_1_L4].mask + sizeof(struct rte_udp_hdr),
1041                gp->layer[FILTER_GENERIC_1_L5].mask, vxlan);
1042         memcpy(gp->layer[FILTER_GENERIC_1_L4].val + sizeof(struct rte_udp_hdr),
1043                gp->layer[FILTER_GENERIC_1_L5].val, vxlan);
1044         inner = inner_ofst - vxlan;
1045         memset(layer, 0, sizeof(layer));
1046         memcpy(layer, gp->layer[FILTER_GENERIC_1_L5].mask + vxlan, inner);
1047         memcpy(gp->layer[FILTER_GENERIC_1_L5].mask, layer, sizeof(layer));
1048         memset(layer, 0, sizeof(layer));
1049         memcpy(layer, gp->layer[FILTER_GENERIC_1_L5].val + vxlan, inner);
1050         memcpy(gp->layer[FILTER_GENERIC_1_L5].val, layer, sizeof(layer));
1051 }
1052
1053 /**
1054  * Build the intenal enic filter structure from the provided pattern. The
1055  * pattern is validated as the items are copied.
1056  *
1057  * @param pattern[in]
1058  * @param items_info[in]
1059  *   Info about this NICs item support, like valid previous items.
1060  * @param enic_filter[out]
1061  *   NIC specfilc filters derived from the pattern.
1062  * @param error[out]
1063  */
1064 static int
1065 enic_copy_filter(const struct rte_flow_item pattern[],
1066                  const struct enic_filter_cap *cap,
1067                  struct enic *enic,
1068                  struct filter_v2 *enic_filter,
1069                  struct rte_flow_error *error)
1070 {
1071         int ret;
1072         const struct rte_flow_item *item = pattern;
1073         u8 inner_ofst = 0; /* If encapsulated, ofst into L5 */
1074         enum rte_flow_item_type prev_item;
1075         const struct enic_items *item_info;
1076         struct copy_item_args args;
1077         enic_copy_item_fn *copy_fn;
1078         u8 is_first_item = 1;
1079
1080         FLOW_TRACE();
1081
1082         prev_item = 0;
1083
1084         args.filter = enic_filter;
1085         args.inner_ofst = &inner_ofst;
1086         args.enic = enic;
1087         for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
1088                 /* Get info about how to validate and copy the item. If NULL
1089                  * is returned the nic does not support the item.
1090                  */
1091                 if (item->type == RTE_FLOW_ITEM_TYPE_VOID)
1092                         continue;
1093
1094                 item_info = &cap->item_info[item->type];
1095                 if (item->type > cap->max_item_type ||
1096                     item_info->copy_item == NULL ||
1097                     (inner_ofst > 0 && item_info->inner_copy_item == NULL)) {
1098                         rte_flow_error_set(error, ENOTSUP,
1099                                 RTE_FLOW_ERROR_TYPE_ITEM,
1100                                 NULL, "Unsupported item.");
1101                         return -rte_errno;
1102                 }
1103
1104                 /* check to see if item stacking is valid */
1105                 if (!item_stacking_valid(prev_item, item_info, is_first_item))
1106                         goto stacking_error;
1107
1108                 args.item = item;
1109                 copy_fn = inner_ofst > 0 ? item_info->inner_copy_item :
1110                         item_info->copy_item;
1111                 ret = copy_fn(&args);
1112                 if (ret)
1113                         goto item_not_supported;
1114                 prev_item = item->type;
1115                 is_first_item = 0;
1116         }
1117         fixup_l5_layer(enic, &enic_filter->u.generic_1, inner_ofst);
1118
1119         return 0;
1120
1121 item_not_supported:
1122         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_ITEM,
1123                            NULL, "enic type error");
1124         return -rte_errno;
1125
1126 stacking_error:
1127         rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
1128                            item, "stacking error");
1129         return -rte_errno;
1130 }
1131
1132 /**
1133  * Build the intenal version 1 NIC action structure from the provided pattern.
1134  * The pattern is validated as the items are copied.
1135  *
1136  * @param actions[in]
1137  * @param enic_action[out]
1138  *   NIC specfilc actions derived from the actions.
1139  * @param error[out]
1140  */
1141 static int
1142 enic_copy_action_v1(__rte_unused struct enic *enic,
1143                     const struct rte_flow_action actions[],
1144                     struct filter_action_v2 *enic_action)
1145 {
1146         enum { FATE = 1, };
1147         uint32_t overlap = 0;
1148
1149         FLOW_TRACE();
1150
1151         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1152                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID)
1153                         continue;
1154
1155                 switch (actions->type) {
1156                 case RTE_FLOW_ACTION_TYPE_QUEUE: {
1157                         const struct rte_flow_action_queue *queue =
1158                                 (const struct rte_flow_action_queue *)
1159                                 actions->conf;
1160
1161                         if (overlap & FATE)
1162                                 return ENOTSUP;
1163                         overlap |= FATE;
1164                         enic_action->rq_idx =
1165                                 enic_rte_rq_idx_to_sop_idx(queue->index);
1166                         break;
1167                 }
1168                 default:
1169                         RTE_ASSERT(0);
1170                         break;
1171                 }
1172         }
1173         if (!(overlap & FATE))
1174                 return ENOTSUP;
1175         enic_action->type = FILTER_ACTION_RQ_STEERING;
1176         return 0;
1177 }
1178
1179 /**
1180  * Build the intenal version 2 NIC action structure from the provided pattern.
1181  * The pattern is validated as the items are copied.
1182  *
1183  * @param actions[in]
1184  * @param enic_action[out]
1185  *   NIC specfilc actions derived from the actions.
1186  * @param error[out]
1187  */
1188 static int
1189 enic_copy_action_v2(struct enic *enic,
1190                     const struct rte_flow_action actions[],
1191                     struct filter_action_v2 *enic_action)
1192 {
1193         enum { FATE = 1, MARK = 2, };
1194         uint32_t overlap = 0;
1195         bool passthru = false;
1196
1197         FLOW_TRACE();
1198
1199         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1200                 switch (actions->type) {
1201                 case RTE_FLOW_ACTION_TYPE_QUEUE: {
1202                         const struct rte_flow_action_queue *queue =
1203                                 (const struct rte_flow_action_queue *)
1204                                 actions->conf;
1205
1206                         if (overlap & FATE)
1207                                 return ENOTSUP;
1208                         overlap |= FATE;
1209                         enic_action->rq_idx =
1210                                 enic_rte_rq_idx_to_sop_idx(queue->index);
1211                         enic_action->flags |= FILTER_ACTION_RQ_STEERING_FLAG;
1212                         break;
1213                 }
1214                 case RTE_FLOW_ACTION_TYPE_MARK: {
1215                         const struct rte_flow_action_mark *mark =
1216                                 (const struct rte_flow_action_mark *)
1217                                 actions->conf;
1218
1219                         if (overlap & MARK)
1220                                 return ENOTSUP;
1221                         overlap |= MARK;
1222                         /*
1223                          * Map mark ID (32-bit) to filter ID (16-bit):
1224                          * - Reject values > 16 bits
1225                          * - Filter ID 0 is reserved for filters that steer
1226                          *   but not mark. So add 1 to the mark ID to avoid
1227                          *   using 0.
1228                          * - Filter ID (ENIC_MAGIC_FILTER_ID = 0xffff) is
1229                          *   reserved for the "flag" action below.
1230                          */
1231                         if (mark->id >= ENIC_MAGIC_FILTER_ID - 1)
1232                                 return EINVAL;
1233                         enic_action->filter_id = mark->id + 1;
1234                         enic_action->flags |= FILTER_ACTION_FILTER_ID_FLAG;
1235                         break;
1236                 }
1237                 case RTE_FLOW_ACTION_TYPE_FLAG: {
1238                         if (overlap & MARK)
1239                                 return ENOTSUP;
1240                         overlap |= MARK;
1241                         /* ENIC_MAGIC_FILTER_ID is reserved for flagging */
1242                         enic_action->filter_id = ENIC_MAGIC_FILTER_ID;
1243                         enic_action->flags |= FILTER_ACTION_FILTER_ID_FLAG;
1244                         break;
1245                 }
1246                 case RTE_FLOW_ACTION_TYPE_DROP: {
1247                         if (overlap & FATE)
1248                                 return ENOTSUP;
1249                         overlap |= FATE;
1250                         enic_action->flags |= FILTER_ACTION_DROP_FLAG;
1251                         break;
1252                 }
1253                 case RTE_FLOW_ACTION_TYPE_RSS: {
1254                         const struct rte_flow_action_rss *rss =
1255                                 (const struct rte_flow_action_rss *)
1256                                 actions->conf;
1257                         bool allow;
1258                         uint16_t i;
1259
1260                         /*
1261                          * Hardware does not support general RSS actions, but
1262                          * we can still support the dummy one that is used to
1263                          * "receive normally".
1264                          */
1265                         allow = rss->func == RTE_ETH_HASH_FUNCTION_DEFAULT &&
1266                                 rss->level == 0 &&
1267                                 (rss->types == 0 ||
1268                                  rss->types == enic->rss_hf) &&
1269                                 rss->queue_num == enic->rq_count &&
1270                                 rss->key_len == 0;
1271                         /* Identity queue map is ok */
1272                         for (i = 0; i < rss->queue_num; i++)
1273                                 allow = allow && (i == rss->queue[i]);
1274                         if (!allow)
1275                                 return ENOTSUP;
1276                         if (overlap & FATE)
1277                                 return ENOTSUP;
1278                         /* Need MARK or FLAG */
1279                         if (!(overlap & MARK))
1280                                 return ENOTSUP;
1281                         overlap |= FATE;
1282                         break;
1283                 }
1284                 case RTE_FLOW_ACTION_TYPE_PASSTHRU: {
1285                         /*
1286                          * Like RSS above, PASSTHRU + MARK may be used to
1287                          * "mark and then receive normally". MARK usually comes
1288                          * after PASSTHRU, so remember we have seen passthru
1289                          * and check for mark later.
1290                          */
1291                         if (overlap & FATE)
1292                                 return ENOTSUP;
1293                         overlap |= FATE;
1294                         passthru = true;
1295                         break;
1296                 }
1297                 case RTE_FLOW_ACTION_TYPE_VOID:
1298                         continue;
1299                 default:
1300                         RTE_ASSERT(0);
1301                         break;
1302                 }
1303         }
1304         /* Only PASSTHRU + MARK is allowed */
1305         if (passthru && !(overlap & MARK))
1306                 return ENOTSUP;
1307         if (!(overlap & FATE))
1308                 return ENOTSUP;
1309         enic_action->type = FILTER_ACTION_V2;
1310         return 0;
1311 }
1312
1313 /** Check if the action is supported */
1314 static int
1315 enic_match_action(const struct rte_flow_action *action,
1316                   const enum rte_flow_action_type *supported_actions)
1317 {
1318         for (; *supported_actions != RTE_FLOW_ACTION_TYPE_END;
1319              supported_actions++) {
1320                 if (action->type == *supported_actions)
1321                         return 1;
1322         }
1323         return 0;
1324 }
1325
1326 /** Get the NIC filter capabilties structure */
1327 static const struct enic_filter_cap *
1328 enic_get_filter_cap(struct enic *enic)
1329 {
1330         if (enic->flow_filter_mode)
1331                 return &enic_filter_cap[enic->flow_filter_mode];
1332
1333         return NULL;
1334 }
1335
1336 /** Get the actions for this NIC version. */
1337 static const struct enic_action_cap *
1338 enic_get_action_cap(struct enic *enic)
1339 {
1340         const struct enic_action_cap *ea;
1341         uint8_t actions;
1342
1343         actions = enic->filter_actions;
1344         if (actions & FILTER_ACTION_DROP_FLAG)
1345                 ea = &enic_action_cap[FILTER_ACTION_DROP_FLAG];
1346         else if (actions & FILTER_ACTION_FILTER_ID_FLAG)
1347                 ea = &enic_action_cap[FILTER_ACTION_FILTER_ID_FLAG];
1348         else
1349                 ea = &enic_action_cap[FILTER_ACTION_RQ_STEERING_FLAG];
1350         return ea;
1351 }
1352
1353 /* Debug function to dump internal NIC action structure. */
1354 static void
1355 enic_dump_actions(const struct filter_action_v2 *ea)
1356 {
1357         if (ea->type == FILTER_ACTION_RQ_STEERING) {
1358                 FLOW_LOG(INFO, "Action(V1), queue: %u\n", ea->rq_idx);
1359         } else if (ea->type == FILTER_ACTION_V2) {
1360                 FLOW_LOG(INFO, "Actions(V2)\n");
1361                 if (ea->flags & FILTER_ACTION_RQ_STEERING_FLAG)
1362                         FLOW_LOG(INFO, "\tqueue: %u\n",
1363                                enic_sop_rq_idx_to_rte_idx(ea->rq_idx));
1364                 if (ea->flags & FILTER_ACTION_FILTER_ID_FLAG)
1365                         FLOW_LOG(INFO, "\tfilter_id: %u\n", ea->filter_id);
1366         }
1367 }
1368
1369 /* Debug function to dump internal NIC filter structure. */
1370 static void
1371 enic_dump_filter(const struct filter_v2 *filt)
1372 {
1373         const struct filter_generic_1 *gp;
1374         int i, j, mbyte;
1375         char buf[128], *bp;
1376         char ip4[16], ip6[16], udp[16], tcp[16], tcpudp[16], ip4csum[16];
1377         char l4csum[16], ipfrag[16];
1378
1379         switch (filt->type) {
1380         case FILTER_IPV4_5TUPLE:
1381                 FLOW_LOG(INFO, "FILTER_IPV4_5TUPLE\n");
1382                 break;
1383         case FILTER_USNIC_IP:
1384         case FILTER_DPDK_1:
1385                 /* FIXME: this should be a loop */
1386                 gp = &filt->u.generic_1;
1387                 FLOW_LOG(INFO, "Filter: vlan: 0x%04x, mask: 0x%04x\n",
1388                        gp->val_vlan, gp->mask_vlan);
1389
1390                 if (gp->mask_flags & FILTER_GENERIC_1_IPV4)
1391                         sprintf(ip4, "%s ",
1392                                 (gp->val_flags & FILTER_GENERIC_1_IPV4)
1393                                  ? "ip4(y)" : "ip4(n)");
1394                 else
1395                         sprintf(ip4, "%s ", "ip4(x)");
1396
1397                 if (gp->mask_flags & FILTER_GENERIC_1_IPV6)
1398                         sprintf(ip6, "%s ",
1399                                 (gp->val_flags & FILTER_GENERIC_1_IPV4)
1400                                  ? "ip6(y)" : "ip6(n)");
1401                 else
1402                         sprintf(ip6, "%s ", "ip6(x)");
1403
1404                 if (gp->mask_flags & FILTER_GENERIC_1_UDP)
1405                         sprintf(udp, "%s ",
1406                                 (gp->val_flags & FILTER_GENERIC_1_UDP)
1407                                  ? "udp(y)" : "udp(n)");
1408                 else
1409                         sprintf(udp, "%s ", "udp(x)");
1410
1411                 if (gp->mask_flags & FILTER_GENERIC_1_TCP)
1412                         sprintf(tcp, "%s ",
1413                                 (gp->val_flags & FILTER_GENERIC_1_TCP)
1414                                  ? "tcp(y)" : "tcp(n)");
1415                 else
1416                         sprintf(tcp, "%s ", "tcp(x)");
1417
1418                 if (gp->mask_flags & FILTER_GENERIC_1_TCP_OR_UDP)
1419                         sprintf(tcpudp, "%s ",
1420                                 (gp->val_flags & FILTER_GENERIC_1_TCP_OR_UDP)
1421                                  ? "tcpudp(y)" : "tcpudp(n)");
1422                 else
1423                         sprintf(tcpudp, "%s ", "tcpudp(x)");
1424
1425                 if (gp->mask_flags & FILTER_GENERIC_1_IP4SUM_OK)
1426                         sprintf(ip4csum, "%s ",
1427                                 (gp->val_flags & FILTER_GENERIC_1_IP4SUM_OK)
1428                                  ? "ip4csum(y)" : "ip4csum(n)");
1429                 else
1430                         sprintf(ip4csum, "%s ", "ip4csum(x)");
1431
1432                 if (gp->mask_flags & FILTER_GENERIC_1_L4SUM_OK)
1433                         sprintf(l4csum, "%s ",
1434                                 (gp->val_flags & FILTER_GENERIC_1_L4SUM_OK)
1435                                  ? "l4csum(y)" : "l4csum(n)");
1436                 else
1437                         sprintf(l4csum, "%s ", "l4csum(x)");
1438
1439                 if (gp->mask_flags & FILTER_GENERIC_1_IPFRAG)
1440                         sprintf(ipfrag, "%s ",
1441                                 (gp->val_flags & FILTER_GENERIC_1_IPFRAG)
1442                                  ? "ipfrag(y)" : "ipfrag(n)");
1443                 else
1444                         sprintf(ipfrag, "%s ", "ipfrag(x)");
1445                 FLOW_LOG(INFO, "\tFlags: %s%s%s%s%s%s%s%s\n", ip4, ip6, udp,
1446                          tcp, tcpudp, ip4csum, l4csum, ipfrag);
1447
1448                 for (i = 0; i < FILTER_GENERIC_1_NUM_LAYERS; i++) {
1449                         mbyte = FILTER_GENERIC_1_KEY_LEN - 1;
1450                         while (mbyte && !gp->layer[i].mask[mbyte])
1451                                 mbyte--;
1452                         if (mbyte == 0)
1453                                 continue;
1454
1455                         bp = buf;
1456                         for (j = 0; j <= mbyte; j++) {
1457                                 sprintf(bp, "%02x",
1458                                         gp->layer[i].mask[j]);
1459                                 bp += 2;
1460                         }
1461                         *bp = '\0';
1462                         FLOW_LOG(INFO, "\tL%u mask: %s\n", i + 2, buf);
1463                         bp = buf;
1464                         for (j = 0; j <= mbyte; j++) {
1465                                 sprintf(bp, "%02x",
1466                                         gp->layer[i].val[j]);
1467                                 bp += 2;
1468                         }
1469                         *bp = '\0';
1470                         FLOW_LOG(INFO, "\tL%u  val: %s\n", i + 2, buf);
1471                 }
1472                 break;
1473         default:
1474                 FLOW_LOG(INFO, "FILTER UNKNOWN\n");
1475                 break;
1476         }
1477 }
1478
1479 /* Debug function to dump internal NIC flow structures. */
1480 static void
1481 enic_dump_flow(const struct filter_action_v2 *ea, const struct filter_v2 *filt)
1482 {
1483         enic_dump_filter(filt);
1484         enic_dump_actions(ea);
1485 }
1486
1487
1488 /**
1489  * Internal flow parse/validate function.
1490  *
1491  * @param dev[in]
1492  *   This device pointer.
1493  * @param pattern[in]
1494  * @param actions[in]
1495  * @param error[out]
1496  * @param enic_filter[out]
1497  *   Internal NIC filter structure pointer.
1498  * @param enic_action[out]
1499  *   Internal NIC action structure pointer.
1500  */
1501 static int
1502 enic_flow_parse(struct rte_eth_dev *dev,
1503                 const struct rte_flow_attr *attrs,
1504                 const struct rte_flow_item pattern[],
1505                 const struct rte_flow_action actions[],
1506                 struct rte_flow_error *error,
1507                 struct filter_v2 *enic_filter,
1508                 struct filter_action_v2 *enic_action)
1509 {
1510         unsigned int ret = 0;
1511         struct enic *enic = pmd_priv(dev);
1512         const struct enic_filter_cap *enic_filter_cap;
1513         const struct enic_action_cap *enic_action_cap;
1514         const struct rte_flow_action *action;
1515
1516         FLOW_TRACE();
1517
1518         memset(enic_filter, 0, sizeof(*enic_filter));
1519         memset(enic_action, 0, sizeof(*enic_action));
1520
1521         if (!pattern) {
1522                 rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_NUM,
1523                                    NULL, "No pattern specified");
1524                 return -rte_errno;
1525         }
1526
1527         if (!actions) {
1528                 rte_flow_error_set(error, EINVAL,
1529                                    RTE_FLOW_ERROR_TYPE_ACTION_NUM,
1530                                    NULL, "No action specified");
1531                 return -rte_errno;
1532         }
1533
1534         if (attrs) {
1535                 if (attrs->group) {
1536                         rte_flow_error_set(error, ENOTSUP,
1537                                            RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1538                                            NULL,
1539                                            "priority groups are not supported");
1540                         return -rte_errno;
1541                 } else if (attrs->priority) {
1542                         rte_flow_error_set(error, ENOTSUP,
1543                                            RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1544                                            NULL,
1545                                            "priorities are not supported");
1546                         return -rte_errno;
1547                 } else if (attrs->egress) {
1548                         rte_flow_error_set(error, ENOTSUP,
1549                                            RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
1550                                            NULL,
1551                                            "egress is not supported");
1552                         return -rte_errno;
1553                 } else if (attrs->transfer) {
1554                         rte_flow_error_set(error, ENOTSUP,
1555                                            RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1556                                            NULL,
1557                                            "transfer is not supported");
1558                         return -rte_errno;
1559                 } else if (!attrs->ingress) {
1560                         rte_flow_error_set(error, ENOTSUP,
1561                                            RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1562                                            NULL,
1563                                            "only ingress is supported");
1564                         return -rte_errno;
1565                 }
1566
1567         } else {
1568                 rte_flow_error_set(error, EINVAL,
1569                                    RTE_FLOW_ERROR_TYPE_ATTR,
1570                                    NULL, "No attribute specified");
1571                 return -rte_errno;
1572         }
1573
1574         /* Verify Actions. */
1575         enic_action_cap =  enic_get_action_cap(enic);
1576         for (action = &actions[0]; action->type != RTE_FLOW_ACTION_TYPE_END;
1577              action++) {
1578                 if (action->type == RTE_FLOW_ACTION_TYPE_VOID)
1579                         continue;
1580                 else if (!enic_match_action(action, enic_action_cap->actions))
1581                         break;
1582         }
1583         if (action->type != RTE_FLOW_ACTION_TYPE_END) {
1584                 rte_flow_error_set(error, EPERM, RTE_FLOW_ERROR_TYPE_ACTION,
1585                                    action, "Invalid action.");
1586                 return -rte_errno;
1587         }
1588         ret = enic_action_cap->copy_fn(enic, actions, enic_action);
1589         if (ret) {
1590                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
1591                            NULL, "Unsupported action.");
1592                 return -rte_errno;
1593         }
1594
1595         /* Verify Flow items. If copying the filter from flow format to enic
1596          * format fails, the flow is not supported
1597          */
1598         enic_filter_cap =  enic_get_filter_cap(enic);
1599         if (enic_filter_cap == NULL) {
1600                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
1601                            NULL, "Flow API not available");
1602                 return -rte_errno;
1603         }
1604         enic_filter->type = enic->flow_filter_mode;
1605         ret = enic_copy_filter(pattern, enic_filter_cap, enic,
1606                                        enic_filter, error);
1607         return ret;
1608 }
1609
1610 /**
1611  * Push filter/action to the NIC.
1612  *
1613  * @param enic[in]
1614  *   Device structure pointer.
1615  * @param enic_filter[in]
1616  *   Internal NIC filter structure pointer.
1617  * @param enic_action[in]
1618  *   Internal NIC action structure pointer.
1619  * @param error[out]
1620  */
1621 static struct rte_flow *
1622 enic_flow_add_filter(struct enic *enic, struct filter_v2 *enic_filter,
1623                    struct filter_action_v2 *enic_action,
1624                    struct rte_flow_error *error)
1625 {
1626         struct rte_flow *flow;
1627         int err;
1628         u16 entry;
1629
1630         FLOW_TRACE();
1631
1632         flow = rte_calloc(__func__, 1, sizeof(*flow), 0);
1633         if (!flow) {
1634                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1635                                    NULL, "cannot allocate flow memory");
1636                 return NULL;
1637         }
1638
1639         /* entry[in] is the queue id, entry[out] is the filter Id for delete */
1640         entry = enic_action->rq_idx;
1641         err = vnic_dev_classifier(enic->vdev, CLSF_ADD, &entry, enic_filter,
1642                                   enic_action);
1643         if (err) {
1644                 rte_flow_error_set(error, -err, RTE_FLOW_ERROR_TYPE_HANDLE,
1645                                    NULL, "vnic_dev_classifier error");
1646                 rte_free(flow);
1647                 return NULL;
1648         }
1649
1650         flow->enic_filter_id = entry;
1651         flow->enic_filter = *enic_filter;
1652         return flow;
1653 }
1654
1655 /**
1656  * Remove filter/action from the NIC.
1657  *
1658  * @param enic[in]
1659  *   Device structure pointer.
1660  * @param filter_id[in]
1661  *   Id of NIC filter.
1662  * @param enic_action[in]
1663  *   Internal NIC action structure pointer.
1664  * @param error[out]
1665  */
1666 static int
1667 enic_flow_del_filter(struct enic *enic, struct rte_flow *flow,
1668                    struct rte_flow_error *error)
1669 {
1670         u16 filter_id;
1671         int err;
1672
1673         FLOW_TRACE();
1674
1675         filter_id = flow->enic_filter_id;
1676         err = vnic_dev_classifier(enic->vdev, CLSF_DEL, &filter_id, NULL, NULL);
1677         if (err) {
1678                 rte_flow_error_set(error, -err, RTE_FLOW_ERROR_TYPE_HANDLE,
1679                                    NULL, "vnic_dev_classifier failed");
1680                 return -err;
1681         }
1682         return 0;
1683 }
1684
1685 /*
1686  * The following functions are callbacks for Generic flow API.
1687  */
1688
1689 /**
1690  * Validate a flow supported by the NIC.
1691  *
1692  * @see rte_flow_validate()
1693  * @see rte_flow_ops
1694  */
1695 static int
1696 enic_flow_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attrs,
1697                    const struct rte_flow_item pattern[],
1698                    const struct rte_flow_action actions[],
1699                    struct rte_flow_error *error)
1700 {
1701         struct filter_v2 enic_filter;
1702         struct filter_action_v2 enic_action;
1703         int ret;
1704
1705         FLOW_TRACE();
1706
1707         ret = enic_flow_parse(dev, attrs, pattern, actions, error,
1708                                &enic_filter, &enic_action);
1709         if (!ret)
1710                 enic_dump_flow(&enic_action, &enic_filter);
1711         return ret;
1712 }
1713
1714 /**
1715  * Create a flow supported by the NIC.
1716  *
1717  * @see rte_flow_create()
1718  * @see rte_flow_ops
1719  */
1720 static struct rte_flow *
1721 enic_flow_create(struct rte_eth_dev *dev,
1722                  const struct rte_flow_attr *attrs,
1723                  const struct rte_flow_item pattern[],
1724                  const struct rte_flow_action actions[],
1725                  struct rte_flow_error *error)
1726 {
1727         int ret;
1728         struct filter_v2 enic_filter;
1729         struct filter_action_v2 enic_action;
1730         struct rte_flow *flow;
1731         struct enic *enic = pmd_priv(dev);
1732
1733         FLOW_TRACE();
1734
1735         ret = enic_flow_parse(dev, attrs, pattern, actions, error, &enic_filter,
1736                               &enic_action);
1737         if (ret < 0)
1738                 return NULL;
1739
1740         flow = enic_flow_add_filter(enic, &enic_filter, &enic_action,
1741                                     error);
1742         if (flow)
1743                 LIST_INSERT_HEAD(&enic->flows, flow, next);
1744
1745         return flow;
1746 }
1747
1748 /**
1749  * Destroy a flow supported by the NIC.
1750  *
1751  * @see rte_flow_destroy()
1752  * @see rte_flow_ops
1753  */
1754 static int
1755 enic_flow_destroy(struct rte_eth_dev *dev, struct rte_flow *flow,
1756                   __rte_unused struct rte_flow_error *error)
1757 {
1758         struct enic *enic = pmd_priv(dev);
1759
1760         FLOW_TRACE();
1761
1762         enic_flow_del_filter(enic, flow, error);
1763         LIST_REMOVE(flow, next);
1764         rte_free(flow);
1765         return 0;
1766 }
1767
1768 /**
1769  * Flush all flows on the device.
1770  *
1771  * @see rte_flow_flush()
1772  * @see rte_flow_ops
1773  */
1774 static int
1775 enic_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
1776 {
1777         struct rte_flow *flow;
1778         struct enic *enic = pmd_priv(dev);
1779
1780         FLOW_TRACE();
1781
1782
1783         while (!LIST_EMPTY(&enic->flows)) {
1784                 flow = LIST_FIRST(&enic->flows);
1785                 enic_flow_del_filter(enic, flow, error);
1786                 LIST_REMOVE(flow, next);
1787                 rte_free(flow);
1788         }
1789         return 0;
1790 }
1791
1792 /**
1793  * Flow callback registration.
1794  *
1795  * @see rte_flow_ops
1796  */
1797 const struct rte_flow_ops enic_flow_ops = {
1798         .validate = enic_flow_validate,
1799         .create = enic_flow_create,
1800         .destroy = enic_flow_destroy,
1801         .flush = enic_flow_flush,
1802 };