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  */
  34 struct copy_item_args {
  35         const struct rte_flow_item *item;
  36         struct filter_v2 *filter;
  37         uint8_t *inner_ofst;
  38 };
  39
  40 /* functions for copying items into enic filters */
  41 typedef int (enic_copy_item_fn)(struct copy_item_args *arg);
  42
  43 /** Info about how to copy items into enic filters. */
  44 struct enic_items {
  45         /** Function for copying and validating an item. */
  46         enic_copy_item_fn *copy_item;
  47         /** List of valid previous items. */
  48         const enum rte_flow_item_type * const prev_items;
  49         /** True if it's OK for this item to be the first item. For some NIC
  50          * versions, it's invalid to start the stack above layer 3.
  51          */
  52         const u8 valid_start_item;
  53 };
  54
  55 /** Filtering capabilities for various NIC and firmware versions. */
  56 struct enic_filter_cap {
  57         /** list of valid items and their handlers and attributes. */
  58         const struct enic_items *item_info;
  59         /* Max type in the above list, used to detect unsupported types */
  60         enum rte_flow_item_type max_item_type;
  61 };
  62
  63 /* functions for copying flow actions into enic actions */
  64 typedef int (copy_action_fn)(struct enic *enic,
  65                              const struct rte_flow_action actions[],
  66                              struct filter_action_v2 *enic_action);
  67
  68 /** Action capabilities for various NICs. */
  69 struct enic_action_cap {
  70         /** list of valid actions */
  71         const enum rte_flow_action_type *actions;
  72         /** copy function for a particular NIC */
  73         copy_action_fn *copy_fn;
  74 };
  75
  76 /* Forward declarations */
  77 static enic_copy_item_fn enic_copy_item_ipv4_v1;
  78 static enic_copy_item_fn enic_copy_item_udp_v1;
  79 static enic_copy_item_fn enic_copy_item_tcp_v1;
  80 static enic_copy_item_fn enic_copy_item_raw_v2;
  81 static enic_copy_item_fn enic_copy_item_eth_v2;
  82 static enic_copy_item_fn enic_copy_item_vlan_v2;
  83 static enic_copy_item_fn enic_copy_item_ipv4_v2;
  84 static enic_copy_item_fn enic_copy_item_ipv6_v2;
  85 static enic_copy_item_fn enic_copy_item_udp_v2;
  86 static enic_copy_item_fn enic_copy_item_tcp_v2;
  87 static enic_copy_item_fn enic_copy_item_sctp_v2;
  88 static enic_copy_item_fn enic_copy_item_vxlan_v2;
  89 static copy_action_fn enic_copy_action_v1;
  90 static copy_action_fn enic_copy_action_v2;
  91
  92 /**
  93  * Legacy NICs or NICs with outdated firmware. Only 5-tuple perfect match
  94  * is supported.
  95  */
  96 static const struct enic_items enic_items_v1[] = {
  97         [RTE_FLOW_ITEM_TYPE_IPV4] = {
  98                 .copy_item = enic_copy_item_ipv4_v1,
  99                 .valid_start_item = 1,
 100                 .prev_items = (const enum rte_flow_item_type[]) {
 101                                RTE_FLOW_ITEM_TYPE_END,
 102                 },
 103         },
 104         [RTE_FLOW_ITEM_TYPE_UDP] = {
 105                 .copy_item = enic_copy_item_udp_v1,
 106                 .valid_start_item = 0,
 107                 .prev_items = (const enum rte_flow_item_type[]) {
 108                                RTE_FLOW_ITEM_TYPE_IPV4,
 109                                RTE_FLOW_ITEM_TYPE_END,
 110                 },
 111         },
 112         [RTE_FLOW_ITEM_TYPE_TCP] = {
 113                 .copy_item = enic_copy_item_tcp_v1,
 114                 .valid_start_item = 0,
 115                 .prev_items = (const enum rte_flow_item_type[]) {
 116                                RTE_FLOW_ITEM_TYPE_IPV4,
 117                                RTE_FLOW_ITEM_TYPE_END,
 118                 },
 119         },
 120 };
 121
 122 /**
 123  * NICs have Advanced Filters capability but they are disabled. This means
 124  * that layer 3 must be specified.
 125  */
 126 static const struct enic_items enic_items_v2[] = {
 127         [RTE_FLOW_ITEM_TYPE_RAW] = {
 128                 .copy_item = enic_copy_item_raw_v2,
 129                 .valid_start_item = 0,
 130                 .prev_items = (const enum rte_flow_item_type[]) {
 131                                RTE_FLOW_ITEM_TYPE_UDP,
 132                                RTE_FLOW_ITEM_TYPE_END,
 133                 },
 134         },
 135         [RTE_FLOW_ITEM_TYPE_ETH] = {
 136                 .copy_item = enic_copy_item_eth_v2,
 137                 .valid_start_item = 1,
 138                 .prev_items = (const enum rte_flow_item_type[]) {
 139                                RTE_FLOW_ITEM_TYPE_VXLAN,
 140                                RTE_FLOW_ITEM_TYPE_END,
 141                 },
 142         },
 143         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 144                 .copy_item = enic_copy_item_vlan_v2,
 145                 .valid_start_item = 1,
 146                 .prev_items = (const enum rte_flow_item_type[]) {
 147                                RTE_FLOW_ITEM_TYPE_ETH,
 148                                RTE_FLOW_ITEM_TYPE_END,
 149                 },
 150         },
 151         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 152                 .copy_item = enic_copy_item_ipv4_v2,
 153                 .valid_start_item = 1,
 154                 .prev_items = (const enum rte_flow_item_type[]) {
 155                                RTE_FLOW_ITEM_TYPE_ETH,
 156                                RTE_FLOW_ITEM_TYPE_VLAN,
 157                                RTE_FLOW_ITEM_TYPE_END,
 158                 },
 159         },
 160         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 161                 .copy_item = enic_copy_item_ipv6_v2,
 162                 .valid_start_item = 1,
 163                 .prev_items = (const enum rte_flow_item_type[]) {
 164                                RTE_FLOW_ITEM_TYPE_ETH,
 165                                RTE_FLOW_ITEM_TYPE_VLAN,
 166                                RTE_FLOW_ITEM_TYPE_END,
 167                 },
 168         },
 169         [RTE_FLOW_ITEM_TYPE_UDP] = {
 170                 .copy_item = enic_copy_item_udp_v2,
 171                 .valid_start_item = 0,
 172                 .prev_items = (const enum rte_flow_item_type[]) {
 173                                RTE_FLOW_ITEM_TYPE_IPV4,
 174                                RTE_FLOW_ITEM_TYPE_IPV6,
 175                                RTE_FLOW_ITEM_TYPE_END,
 176                 },
 177         },
 178         [RTE_FLOW_ITEM_TYPE_TCP] = {
 179                 .copy_item = enic_copy_item_tcp_v2,
 180                 .valid_start_item = 0,
 181                 .prev_items = (const enum rte_flow_item_type[]) {
 182                                RTE_FLOW_ITEM_TYPE_IPV4,
 183                                RTE_FLOW_ITEM_TYPE_IPV6,
 184                                RTE_FLOW_ITEM_TYPE_END,
 185                 },
 186         },
 187         [RTE_FLOW_ITEM_TYPE_SCTP] = {
 188                 .copy_item = enic_copy_item_sctp_v2,
 189                 .valid_start_item = 0,
 190                 .prev_items = (const enum rte_flow_item_type[]) {
 191                                RTE_FLOW_ITEM_TYPE_IPV4,
 192                                RTE_FLOW_ITEM_TYPE_IPV6,
 193                                RTE_FLOW_ITEM_TYPE_END,
 194                 },
 195         },
 196         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 197                 .copy_item = enic_copy_item_vxlan_v2,
 198                 .valid_start_item = 0,
 199                 .prev_items = (const enum rte_flow_item_type[]) {
 200                                RTE_FLOW_ITEM_TYPE_UDP,
 201                                RTE_FLOW_ITEM_TYPE_END,
 202                 },
 203         },
 204 };
 205
 206 /** NICs with Advanced filters enabled */
 207 static const struct enic_items enic_items_v3[] = {
 208         [RTE_FLOW_ITEM_TYPE_RAW] = {
 209                 .copy_item = enic_copy_item_raw_v2,
 210                 .valid_start_item = 0,
 211                 .prev_items = (const enum rte_flow_item_type[]) {
 212                                RTE_FLOW_ITEM_TYPE_UDP,
 213                                RTE_FLOW_ITEM_TYPE_END,
 214                 },
 215         },
 216         [RTE_FLOW_ITEM_TYPE_ETH] = {
 217                 .copy_item = enic_copy_item_eth_v2,
 218                 .valid_start_item = 1,
 219                 .prev_items = (const enum rte_flow_item_type[]) {
 220                                RTE_FLOW_ITEM_TYPE_VXLAN,
 221                                RTE_FLOW_ITEM_TYPE_END,
 222                 },
 223         },
 224         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 225                 .copy_item = enic_copy_item_vlan_v2,
 226                 .valid_start_item = 1,
 227                 .prev_items = (const enum rte_flow_item_type[]) {
 228                                RTE_FLOW_ITEM_TYPE_ETH,
 229                                RTE_FLOW_ITEM_TYPE_END,
 230                 },
 231         },
 232         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 233                 .copy_item = enic_copy_item_ipv4_v2,
 234                 .valid_start_item = 1,
 235                 .prev_items = (const enum rte_flow_item_type[]) {
 236                                RTE_FLOW_ITEM_TYPE_ETH,
 237                                RTE_FLOW_ITEM_TYPE_VLAN,
 238                                RTE_FLOW_ITEM_TYPE_END,
 239                 },
 240         },
 241         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 242                 .copy_item = enic_copy_item_ipv6_v2,
 243                 .valid_start_item = 1,
 244                 .prev_items = (const enum rte_flow_item_type[]) {
 245                                RTE_FLOW_ITEM_TYPE_ETH,
 246                                RTE_FLOW_ITEM_TYPE_VLAN,
 247                                RTE_FLOW_ITEM_TYPE_END,
 248                 },
 249         },
 250         [RTE_FLOW_ITEM_TYPE_UDP] = {
 251                 .copy_item = enic_copy_item_udp_v2,
 252                 .valid_start_item = 1,
 253                 .prev_items = (const enum rte_flow_item_type[]) {
 254                                RTE_FLOW_ITEM_TYPE_IPV4,
 255                                RTE_FLOW_ITEM_TYPE_IPV6,
 256                                RTE_FLOW_ITEM_TYPE_END,
 257                 },
 258         },
 259         [RTE_FLOW_ITEM_TYPE_TCP] = {
 260                 .copy_item = enic_copy_item_tcp_v2,
 261                 .valid_start_item = 1,
 262                 .prev_items = (const enum rte_flow_item_type[]) {
 263                                RTE_FLOW_ITEM_TYPE_IPV4,
 264                                RTE_FLOW_ITEM_TYPE_IPV6,
 265                                RTE_FLOW_ITEM_TYPE_END,
 266                 },
 267         },
 268         [RTE_FLOW_ITEM_TYPE_SCTP] = {
 269                 .copy_item = enic_copy_item_sctp_v2,
 270                 .valid_start_item = 0,
 271                 .prev_items = (const enum rte_flow_item_type[]) {
 272                                RTE_FLOW_ITEM_TYPE_IPV4,
 273                                RTE_FLOW_ITEM_TYPE_IPV6,
 274                                RTE_FLOW_ITEM_TYPE_END,
 275                 },
 276         },
 277         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 278                 .copy_item = enic_copy_item_vxlan_v2,
 279                 .valid_start_item = 1,
 280                 .prev_items = (const enum rte_flow_item_type[]) {
 281                                RTE_FLOW_ITEM_TYPE_UDP,
 282                                RTE_FLOW_ITEM_TYPE_END,
 283                 },
 284         },
 285 };
 286
 287 /** Filtering capabilities indexed this NICs supported filter type. */
 288 static const struct enic_filter_cap enic_filter_cap[] = {
 289         [FILTER_IPV4_5TUPLE] = {
 290                 .item_info = enic_items_v1,
 291                 .max_item_type = RTE_FLOW_ITEM_TYPE_TCP,
 292         },
 293         [FILTER_USNIC_IP] = {
 294                 .item_info = enic_items_v2,
 295                 .max_item_type = RTE_FLOW_ITEM_TYPE_VXLAN,
 296         },
 297         [FILTER_DPDK_1] = {
 298                 .item_info = enic_items_v3,
 299                 .max_item_type = RTE_FLOW_ITEM_TYPE_VXLAN,
 300         },
 301 };
 302
 303 /** Supported actions for older NICs */
 304 static const enum rte_flow_action_type enic_supported_actions_v1[] = {
 305         RTE_FLOW_ACTION_TYPE_QUEUE,
 306         RTE_FLOW_ACTION_TYPE_END,
 307 };
 308
 309 /** Supported actions for newer NICs */
 310 static const enum rte_flow_action_type enic_supported_actions_v2_id[] = {
 311         RTE_FLOW_ACTION_TYPE_QUEUE,
 312         RTE_FLOW_ACTION_TYPE_MARK,
 313         RTE_FLOW_ACTION_TYPE_FLAG,
 314         RTE_FLOW_ACTION_TYPE_RSS,
 315         RTE_FLOW_ACTION_TYPE_PASSTHRU,
 316         RTE_FLOW_ACTION_TYPE_END,
 317 };
 318
 319 static const enum rte_flow_action_type enic_supported_actions_v2_drop[] = {
 320         RTE_FLOW_ACTION_TYPE_QUEUE,
 321         RTE_FLOW_ACTION_TYPE_MARK,
 322         RTE_FLOW_ACTION_TYPE_FLAG,
 323         RTE_FLOW_ACTION_TYPE_DROP,
 324         RTE_FLOW_ACTION_TYPE_RSS,
 325         RTE_FLOW_ACTION_TYPE_PASSTHRU,
 326         RTE_FLOW_ACTION_TYPE_END,
 327 };
 328
 329 static const enum rte_flow_action_type enic_supported_actions_v2_count[] = {
 330         RTE_FLOW_ACTION_TYPE_QUEUE,
 331         RTE_FLOW_ACTION_TYPE_MARK,
 332         RTE_FLOW_ACTION_TYPE_FLAG,
 333         RTE_FLOW_ACTION_TYPE_DROP,
 334         RTE_FLOW_ACTION_TYPE_COUNT,
 335         RTE_FLOW_ACTION_TYPE_RSS,
 336         RTE_FLOW_ACTION_TYPE_PASSTHRU,
 337         RTE_FLOW_ACTION_TYPE_END,
 338 };
 339
 340 /** Action capabilities indexed by NIC version information */
 341 static const struct enic_action_cap enic_action_cap[] = {
 342         [FILTER_ACTION_RQ_STEERING_FLAG] = {
 343                 .actions = enic_supported_actions_v1,
 344                 .copy_fn = enic_copy_action_v1,
 345         },
 346         [FILTER_ACTION_FILTER_ID_FLAG] = {
 347                 .actions = enic_supported_actions_v2_id,
 348                 .copy_fn = enic_copy_action_v2,
 349         },
 350         [FILTER_ACTION_DROP_FLAG] = {
 351                 .actions = enic_supported_actions_v2_drop,
 352                 .copy_fn = enic_copy_action_v2,
 353         },
 354         [FILTER_ACTION_COUNTER_FLAG] = {
 355                 .actions = enic_supported_actions_v2_count,
 356                 .copy_fn = enic_copy_action_v2,
 357         },
 358 };
 359
 360 static int
 361 mask_exact_match(const u8 *supported, const u8 *supplied,
 362                  unsigned int size)
 363 {
 364         unsigned int i;
 365         for (i = 0; i < size; i++) {
 366                 if (supported[i] != supplied[i])
 367                         return 0;
 368         }
 369         return 1;
 370 }
 371
 372 static int
 373 enic_copy_item_ipv4_v1(struct copy_item_args *arg)
 374 {
 375         const struct rte_flow_item *item = arg->item;
 376         struct filter_v2 *enic_filter = arg->filter;
 377         uint8_t *inner_ofst = arg->inner_ofst;
 378         const struct rte_flow_item_ipv4 *spec = item->spec;
 379         const struct rte_flow_item_ipv4 *mask = item->mask;
 380         struct filter_ipv4_5tuple *enic_5tup = &enic_filter->u.ipv4;
 381         struct ipv4_hdr supported_mask = {
 382                 .src_addr = 0xffffffff,
 383                 .dst_addr = 0xffffffff,
 384         };
 385
 386         FLOW_TRACE();
 387
 388         if (*inner_ofst)
 389                 return ENOTSUP;
 390
 391         if (!mask)
 392                 mask = &rte_flow_item_ipv4_mask;
 393
 394         /* This is an exact match filter, both fields must be set */
 395         if (!spec || !spec->hdr.src_addr || !spec->hdr.dst_addr) {
 396                 FLOW_LOG(ERR, "IPv4 exact match src/dst addr");
 397                 return ENOTSUP;
 398         }
 399
 400         /* check that the suppied mask exactly matches capabilty */
 401         if (!mask_exact_match((const u8 *)&supported_mask,
 402                               (const u8 *)item->mask, sizeof(*mask))) {
 403                 FLOW_LOG(ERR, "IPv4 exact match mask");
 404                 return ENOTSUP;
 405         }
 406
 407         enic_filter->u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
 408         enic_5tup->src_addr = spec->hdr.src_addr;
 409         enic_5tup->dst_addr = spec->hdr.dst_addr;
 410
 411         return 0;
 412 }
 413
 414 static int
 415 enic_copy_item_udp_v1(struct copy_item_args *arg)
 416 {
 417         const struct rte_flow_item *item = arg->item;
 418         struct filter_v2 *enic_filter = arg->filter;
 419         uint8_t *inner_ofst = arg->inner_ofst;
 420         const struct rte_flow_item_udp *spec = item->spec;
 421         const struct rte_flow_item_udp *mask = item->mask;
 422         struct filter_ipv4_5tuple *enic_5tup = &enic_filter->u.ipv4;
 423         struct udp_hdr supported_mask = {
 424                 .src_port = 0xffff,
 425                 .dst_port = 0xffff,
 426         };
 427
 428         FLOW_TRACE();
 429
 430         if (*inner_ofst)
 431                 return ENOTSUP;
 432
 433         if (!mask)
 434                 mask = &rte_flow_item_udp_mask;
 435
 436         /* This is an exact match filter, both ports must be set */
 437         if (!spec || !spec->hdr.src_port || !spec->hdr.dst_port) {
 438                 FLOW_LOG(ERR, "UDP exact match src/dst addr");
 439                 return ENOTSUP;
 440         }
 441
 442         /* check that the suppied mask exactly matches capabilty */
 443         if (!mask_exact_match((const u8 *)&supported_mask,
 444                               (const u8 *)item->mask, sizeof(*mask))) {
 445                 FLOW_LOG(ERR, "UDP exact match mask");
 446                 return ENOTSUP;
 447         }
 448
 449         enic_filter->u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
 450         enic_5tup->src_port = spec->hdr.src_port;
 451         enic_5tup->dst_port = spec->hdr.dst_port;
 452         enic_5tup->protocol = PROTO_UDP;
 453
 454         return 0;
 455 }
 456
 457 static int
 458 enic_copy_item_tcp_v1(struct copy_item_args *arg)
 459 {
 460         const struct rte_flow_item *item = arg->item;
 461         struct filter_v2 *enic_filter = arg->filter;
 462         uint8_t *inner_ofst = arg->inner_ofst;
 463         const struct rte_flow_item_tcp *spec = item->spec;
 464         const struct rte_flow_item_tcp *mask = item->mask;
 465         struct filter_ipv4_5tuple *enic_5tup = &enic_filter->u.ipv4;
 466         struct tcp_hdr supported_mask = {
 467                 .src_port = 0xffff,
 468                 .dst_port = 0xffff,
 469         };
 470
 471         FLOW_TRACE();
 472
 473         if (*inner_ofst)
 474                 return ENOTSUP;
 475
 476         if (!mask)
 477                 mask = &rte_flow_item_tcp_mask;
 478
 479         /* This is an exact match filter, both ports must be set */
 480         if (!spec || !spec->hdr.src_port || !spec->hdr.dst_port) {
 481                 FLOW_LOG(ERR, "TCPIPv4 exact match src/dst addr");
 482                 return ENOTSUP;
 483         }
 484
 485         /* check that the suppied mask exactly matches capabilty */
 486         if (!mask_exact_match((const u8 *)&supported_mask,
 487                              (const u8 *)item->mask, sizeof(*mask))) {
 488                 FLOW_LOG(ERR, "TCP exact match mask");
 489                 return ENOTSUP;
 490         }
 491
 492         enic_filter->u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
 493         enic_5tup->src_port = spec->hdr.src_port;
 494         enic_5tup->dst_port = spec->hdr.dst_port;
 495         enic_5tup->protocol = PROTO_TCP;
 496
 497         return 0;
 498 }
 499
 500 static int
 501 enic_copy_item_eth_v2(struct copy_item_args *arg)
 502 {
 503         const struct rte_flow_item *item = arg->item;
 504         struct filter_v2 *enic_filter = arg->filter;
 505         uint8_t *inner_ofst = arg->inner_ofst;
 506         struct ether_hdr enic_spec;
 507         struct ether_hdr enic_mask;
 508         const struct rte_flow_item_eth *spec = item->spec;
 509         const struct rte_flow_item_eth *mask = item->mask;
 510         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 511
 512         FLOW_TRACE();
 513
 514         /* Match all if no spec */
 515         if (!spec)
 516                 return 0;
 517
 518         if (!mask)
 519                 mask = &rte_flow_item_eth_mask;
 520
 521         memcpy(enic_spec.d_addr.addr_bytes, spec->dst.addr_bytes,
 522                ETHER_ADDR_LEN);
 523         memcpy(enic_spec.s_addr.addr_bytes, spec->src.addr_bytes,
 524                ETHER_ADDR_LEN);
 525
 526         memcpy(enic_mask.d_addr.addr_bytes, mask->dst.addr_bytes,
 527                ETHER_ADDR_LEN);
 528         memcpy(enic_mask.s_addr.addr_bytes, mask->src.addr_bytes,
 529                ETHER_ADDR_LEN);
 530         enic_spec.ether_type = spec->type;
 531         enic_mask.ether_type = mask->type;
 532
 533         if (*inner_ofst == 0) {
 534                 /* outer header */
 535                 memcpy(gp->layer[FILTER_GENERIC_1_L2].mask, &enic_mask,
 536                        sizeof(struct ether_hdr));
 537                 memcpy(gp->layer[FILTER_GENERIC_1_L2].val, &enic_spec,
 538                        sizeof(struct ether_hdr));
 539         } else {
 540                 /* inner header */
 541                 if ((*inner_ofst + sizeof(struct ether_hdr)) >
 542                      FILTER_GENERIC_1_KEY_LEN)
 543                         return ENOTSUP;
 544                 /* Offset into L5 where inner Ethernet header goes */
 545                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].mask[*inner_ofst],
 546                        &enic_mask, sizeof(struct ether_hdr));
 547                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].val[*inner_ofst],
 548                        &enic_spec, sizeof(struct ether_hdr));
 549                 *inner_ofst += sizeof(struct ether_hdr);
 550         }
 551         return 0;
 552 }
 553
 554 static int
 555 enic_copy_item_vlan_v2(struct copy_item_args *arg)
 556 {
 557         const struct rte_flow_item *item = arg->item;
 558         struct filter_v2 *enic_filter = arg->filter;
 559         uint8_t *inner_ofst = arg->inner_ofst;
 560         const struct rte_flow_item_vlan *spec = item->spec;
 561         const struct rte_flow_item_vlan *mask = item->mask;
 562         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 563
 564         FLOW_TRACE();
 565
 566         /* Match all if no spec */
 567         if (!spec)
 568                 return 0;
 569
 570         if (!mask)
 571                 mask = &rte_flow_item_vlan_mask;
 572
 573         if (*inner_ofst == 0) {
 574                 struct ether_hdr *eth_mask =
 575                         (void *)gp->layer[FILTER_GENERIC_1_L2].mask;
 576                 struct ether_hdr *eth_val =
 577                         (void *)gp->layer[FILTER_GENERIC_1_L2].val;
 578
 579                 /* Outer TPID cannot be matched */
 580                 if (eth_mask->ether_type)
 581                         return ENOTSUP;
 582                 eth_mask->ether_type = mask->inner_type;
 583                 eth_val->ether_type = spec->inner_type;
 584
 585                 /* Outer header. Use the vlan mask/val fields */
 586                 gp->mask_vlan = mask->tci;
 587                 gp->val_vlan = spec->tci;
 588         } else {
 589                 /* Inner header. Mask/Val start at *inner_ofst into L5 */
 590                 if ((*inner_ofst + sizeof(struct vlan_hdr)) >
 591                      FILTER_GENERIC_1_KEY_LEN)
 592                         return ENOTSUP;
 593                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].mask[*inner_ofst],
 594                        mask, sizeof(struct vlan_hdr));
 595                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].val[*inner_ofst],
 596                        spec, sizeof(struct vlan_hdr));
 597                 *inner_ofst += sizeof(struct vlan_hdr);
 598         }
 599         return 0;
 600 }
 601
 602 static int
 603 enic_copy_item_ipv4_v2(struct copy_item_args *arg)
 604 {
 605         const struct rte_flow_item *item = arg->item;
 606         struct filter_v2 *enic_filter = arg->filter;
 607         uint8_t *inner_ofst = arg->inner_ofst;
 608         const struct rte_flow_item_ipv4 *spec = item->spec;
 609         const struct rte_flow_item_ipv4 *mask = item->mask;
 610         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 611
 612         FLOW_TRACE();
 613
 614         if (*inner_ofst == 0) {
 615                 /* Match IPv4 */
 616                 gp->mask_flags |= FILTER_GENERIC_1_IPV4;
 617                 gp->val_flags |= FILTER_GENERIC_1_IPV4;
 618
 619                 /* Match all if no spec */
 620                 if (!spec)
 621                         return 0;
 622
 623                 if (!mask)
 624                         mask = &rte_flow_item_ipv4_mask;
 625
 626                 memcpy(gp->layer[FILTER_GENERIC_1_L3].mask, &mask->hdr,
 627                        sizeof(struct ipv4_hdr));
 628                 memcpy(gp->layer[FILTER_GENERIC_1_L3].val, &spec->hdr,
 629                        sizeof(struct ipv4_hdr));
 630         } else {
 631                 /* Inner IPv4 header. Mask/Val start at *inner_ofst into L5 */
 632                 if ((*inner_ofst + sizeof(struct ipv4_hdr)) >
 633                      FILTER_GENERIC_1_KEY_LEN)
 634                         return ENOTSUP;
 635                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].mask[*inner_ofst],
 636                        mask, sizeof(struct ipv4_hdr));
 637                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].val[*inner_ofst],
 638                        spec, sizeof(struct ipv4_hdr));
 639                 *inner_ofst += sizeof(struct ipv4_hdr);
 640         }
 641         return 0;
 642 }
 643
 644 static int
 645 enic_copy_item_ipv6_v2(struct copy_item_args *arg)
 646 {
 647         const struct rte_flow_item *item = arg->item;
 648         struct filter_v2 *enic_filter = arg->filter;
 649         uint8_t *inner_ofst = arg->inner_ofst;
 650         const struct rte_flow_item_ipv6 *spec = item->spec;
 651         const struct rte_flow_item_ipv6 *mask = item->mask;
 652         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 653
 654         FLOW_TRACE();
 655
 656         /* Match IPv6 */
 657         gp->mask_flags |= FILTER_GENERIC_1_IPV6;
 658         gp->val_flags |= FILTER_GENERIC_1_IPV6;
 659
 660         /* Match all if no spec */
 661         if (!spec)
 662                 return 0;
 663
 664         if (!mask)
 665                 mask = &rte_flow_item_ipv6_mask;
 666
 667         if (*inner_ofst == 0) {
 668                 memcpy(gp->layer[FILTER_GENERIC_1_L3].mask, &mask->hdr,
 669                        sizeof(struct ipv6_hdr));
 670                 memcpy(gp->layer[FILTER_GENERIC_1_L3].val, &spec->hdr,
 671                        sizeof(struct ipv6_hdr));
 672         } else {
 673                 /* Inner IPv6 header. Mask/Val start at *inner_ofst into L5 */
 674                 if ((*inner_ofst + sizeof(struct ipv6_hdr)) >
 675                      FILTER_GENERIC_1_KEY_LEN)
 676                         return ENOTSUP;
 677                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].mask[*inner_ofst],
 678                        mask, sizeof(struct ipv6_hdr));
 679                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].val[*inner_ofst],
 680                        spec, sizeof(struct ipv6_hdr));
 681                 *inner_ofst += sizeof(struct ipv6_hdr);
 682         }
 683         return 0;
 684 }
 685
 686 static int
 687 enic_copy_item_udp_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         uint8_t *inner_ofst = arg->inner_ofst;
 692         const struct rte_flow_item_udp *spec = item->spec;
 693         const struct rte_flow_item_udp *mask = item->mask;
 694         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 695
 696         FLOW_TRACE();
 697
 698         /* Match UDP */
 699         gp->mask_flags |= FILTER_GENERIC_1_UDP;
 700         gp->val_flags |= FILTER_GENERIC_1_UDP;
 701
 702         /* Match all if no spec */
 703         if (!spec)
 704                 return 0;
 705
 706         if (!mask)
 707                 mask = &rte_flow_item_udp_mask;
 708
 709         if (*inner_ofst == 0) {
 710                 memcpy(gp->layer[FILTER_GENERIC_1_L4].mask, &mask->hdr,
 711                        sizeof(struct udp_hdr));
 712                 memcpy(gp->layer[FILTER_GENERIC_1_L4].val, &spec->hdr,
 713                        sizeof(struct udp_hdr));
 714         } else {
 715                 /* Inner IPv6 header. Mask/Val start at *inner_ofst into L5 */
 716                 if ((*inner_ofst + sizeof(struct udp_hdr)) >
 717                      FILTER_GENERIC_1_KEY_LEN)
 718                         return ENOTSUP;
 719                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].mask[*inner_ofst],
 720                        mask, sizeof(struct udp_hdr));
 721                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].val[*inner_ofst],
 722                        spec, sizeof(struct udp_hdr));
 723                 *inner_ofst += sizeof(struct udp_hdr);
 724         }
 725         return 0;
 726 }
 727
 728 static int
 729 enic_copy_item_tcp_v2(struct copy_item_args *arg)
 730 {
 731         const struct rte_flow_item *item = arg->item;
 732         struct filter_v2 *enic_filter = arg->filter;
 733         uint8_t *inner_ofst = arg->inner_ofst;
 734         const struct rte_flow_item_tcp *spec = item->spec;
 735         const struct rte_flow_item_tcp *mask = item->mask;
 736         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 737
 738         FLOW_TRACE();
 739
 740         /* Match TCP */
 741         gp->mask_flags |= FILTER_GENERIC_1_TCP;
 742         gp->val_flags |= FILTER_GENERIC_1_TCP;
 743
 744         /* Match all if no spec */
 745         if (!spec)
 746                 return 0;
 747
 748         if (!mask)
 749                 return ENOTSUP;
 750
 751         if (*inner_ofst == 0) {
 752                 memcpy(gp->layer[FILTER_GENERIC_1_L4].mask, &mask->hdr,
 753                        sizeof(struct tcp_hdr));
 754                 memcpy(gp->layer[FILTER_GENERIC_1_L4].val, &spec->hdr,
 755                        sizeof(struct tcp_hdr));
 756         } else {
 757                 /* Inner IPv6 header. Mask/Val start at *inner_ofst into L5 */
 758                 if ((*inner_ofst + sizeof(struct tcp_hdr)) >
 759                      FILTER_GENERIC_1_KEY_LEN)
 760                         return ENOTSUP;
 761                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].mask[*inner_ofst],
 762                        mask, sizeof(struct tcp_hdr));
 763                 memcpy(&gp->layer[FILTER_GENERIC_1_L5].val[*inner_ofst],
 764                        spec, sizeof(struct tcp_hdr));
 765                 *inner_ofst += sizeof(struct tcp_hdr);
 766         }
 767         return 0;
 768 }
 769
 770 static int
 771 enic_copy_item_sctp_v2(struct copy_item_args *arg)
 772 {
 773         const struct rte_flow_item *item = arg->item;
 774         struct filter_v2 *enic_filter = arg->filter;
 775         uint8_t *inner_ofst = arg->inner_ofst;
 776         const struct rte_flow_item_sctp *spec = item->spec;
 777         const struct rte_flow_item_sctp *mask = item->mask;
 778         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 779         uint8_t *ip_proto_mask = NULL;
 780         uint8_t *ip_proto = NULL;
 781
 782         FLOW_TRACE();
 783
 784         if (*inner_ofst)
 785                 return ENOTSUP;
 786
 787         /*
 788          * The NIC filter API has no flags for "match sctp", so explicitly set
 789          * the protocol number in the IP pattern.
 790          */
 791         if (gp->val_flags & FILTER_GENERIC_1_IPV4) {
 792                 struct ipv4_hdr *ip;
 793                 ip = (struct ipv4_hdr *)gp->layer[FILTER_GENERIC_1_L3].mask;
 794                 ip_proto_mask = &ip->next_proto_id;
 795                 ip = (struct ipv4_hdr *)gp->layer[FILTER_GENERIC_1_L3].val;
 796                 ip_proto = &ip->next_proto_id;
 797         } else if (gp->val_flags & FILTER_GENERIC_1_IPV6) {
 798                 struct ipv6_hdr *ip;
 799                 ip = (struct ipv6_hdr *)gp->layer[FILTER_GENERIC_1_L3].mask;
 800                 ip_proto_mask = &ip->proto;
 801                 ip = (struct ipv6_hdr *)gp->layer[FILTER_GENERIC_1_L3].val;
 802                 ip_proto = &ip->proto;
 803         } else {
 804                 /* Need IPv4/IPv6 pattern first */
 805                 return EINVAL;
 806         }
 807         *ip_proto = IPPROTO_SCTP;
 808         *ip_proto_mask = 0xff;
 809
 810         /* Match all if no spec */
 811         if (!spec)
 812                 return 0;
 813
 814         if (!mask)
 815                 mask = &rte_flow_item_sctp_mask;
 816
 817         memcpy(gp->layer[FILTER_GENERIC_1_L4].mask, &mask->hdr,
 818                sizeof(struct sctp_hdr));
 819         memcpy(gp->layer[FILTER_GENERIC_1_L4].val, &spec->hdr,
 820                sizeof(struct sctp_hdr));
 821         return 0;
 822 }
 823
 824 static int
 825 enic_copy_item_vxlan_v2(struct copy_item_args *arg)
 826 {
 827         const struct rte_flow_item *item = arg->item;
 828         struct filter_v2 *enic_filter = arg->filter;
 829         uint8_t *inner_ofst = arg->inner_ofst;
 830         const struct rte_flow_item_vxlan *spec = item->spec;
 831         const struct rte_flow_item_vxlan *mask = item->mask;
 832         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 833         struct udp_hdr *udp;
 834
 835         FLOW_TRACE();
 836
 837         if (*inner_ofst)
 838                 return EINVAL;
 839
 840         /*
 841          * The NIC filter API has no flags for "match vxlan". Set UDP port to
 842          * avoid false positives.
 843          */
 844         gp->mask_flags |= FILTER_GENERIC_1_UDP;
 845         gp->val_flags |= FILTER_GENERIC_1_UDP;
 846         udp = (struct udp_hdr *)gp->layer[FILTER_GENERIC_1_L4].mask;
 847         udp->dst_port = 0xffff;
 848         udp = (struct udp_hdr *)gp->layer[FILTER_GENERIC_1_L4].val;
 849         udp->dst_port = RTE_BE16(4789);
 850         /* Match all if no spec */
 851         if (!spec)
 852                 return 0;
 853
 854         if (!mask)
 855                 mask = &rte_flow_item_vxlan_mask;
 856
 857         memcpy(gp->layer[FILTER_GENERIC_1_L5].mask, mask,
 858                sizeof(struct vxlan_hdr));
 859         memcpy(gp->layer[FILTER_GENERIC_1_L5].val, spec,
 860                sizeof(struct vxlan_hdr));
 861
 862         *inner_ofst = sizeof(struct vxlan_hdr);
 863         return 0;
 864 }
 865
 866 /*
 867  * Copy raw item into version 2 NIC filter. Currently, raw pattern match is
 868  * very limited. It is intended for matching UDP tunnel header (e.g. vxlan
 869  * or geneve).
 870  */
 871 static int
 872 enic_copy_item_raw_v2(struct copy_item_args *arg)
 873 {
 874         const struct rte_flow_item *item = arg->item;
 875         struct filter_v2 *enic_filter = arg->filter;
 876         uint8_t *inner_ofst = arg->inner_ofst;
 877         const struct rte_flow_item_raw *spec = item->spec;
 878         const struct rte_flow_item_raw *mask = item->mask;
 879         struct filter_generic_1 *gp = &enic_filter->u.generic_1;
 880
 881         FLOW_TRACE();
 882
 883         /* Cannot be used for inner packet */
 884         if (*inner_ofst)
 885                 return EINVAL;
 886         /* Need both spec and mask */
 887         if (!spec || !mask)
 888                 return EINVAL;
 889         /* Only supports relative with offset 0 */
 890         if (!spec->relative || spec->offset != 0 || spec->search || spec->limit)
 891                 return EINVAL;
 892         /* Need non-null pattern that fits within the NIC's filter pattern */
 893         if (spec->length == 0 || spec->length > FILTER_GENERIC_1_KEY_LEN ||
 894             !spec->pattern || !mask->pattern)
 895                 return EINVAL;
 896         /*
 897          * Mask fields, including length, are often set to zero. Assume that
 898          * means "same as spec" to avoid breaking existing apps. If length
 899          * is not zero, then it should be >= spec length.
 900          *
 901          * No more pattern follows this, so append to the L4 layer instead of
 902          * L5 to work with both recent and older VICs.
 903          */
 904         if (mask->length != 0 && mask->length < spec->length)
 905                 return EINVAL;
 906         memcpy(gp->layer[FILTER_GENERIC_1_L4].mask + sizeof(struct udp_hdr),
 907                mask->pattern, spec->length);
 908         memcpy(gp->layer[FILTER_GENERIC_1_L4].val + sizeof(struct udp_hdr),
 909                spec->pattern, spec->length);
 910
 911         return 0;
 912 }
 913
 914 /**
 915  * Return 1 if current item is valid on top of the previous one.
 916  *
 917  * @param prev_item[in]
 918  *   The item before this one in the pattern or RTE_FLOW_ITEM_TYPE_END if this
 919  *   is the first item.
 920  * @param item_info[in]
 921  *   Info about this item, like valid previous items.
 922  * @param is_first[in]
 923  *   True if this the first item in the pattern.
 924  */
 925 static int
 926 item_stacking_valid(enum rte_flow_item_type prev_item,
 927                     const struct enic_items *item_info, u8 is_first_item)
 928 {
 929         enum rte_flow_item_type const *allowed_items = item_info->prev_items;
 930
 931         FLOW_TRACE();
 932
 933         for (; *allowed_items != RTE_FLOW_ITEM_TYPE_END; allowed_items++) {
 934                 if (prev_item == *allowed_items)
 935                         return 1;
 936         }
 937
 938         /* This is the first item in the stack. Check if that's cool */
 939         if (is_first_item && item_info->valid_start_item)
 940                 return 1;
 941
 942         return 0;
 943 }
 944
 945 /*
 946  * Fix up the L5 layer.. HW vxlan parsing removes vxlan header from L5.
 947  * Instead it is in L4 following the UDP header. Append the vxlan
 948  * pattern to L4 (udp) and shift any inner packet pattern in L5.
 949  */
 950 static void
 951 fixup_l5_layer(struct enic *enic, struct filter_generic_1 *gp,
 952                uint8_t inner_ofst)
 953 {
 954         uint8_t layer[FILTER_GENERIC_1_KEY_LEN];
 955         uint8_t inner;
 956         uint8_t vxlan;
 957
 958         if (!(inner_ofst > 0 && enic->vxlan))
 959                 return;
 960         FLOW_TRACE();
 961         vxlan = sizeof(struct vxlan_hdr);
 962         memcpy(gp->layer[FILTER_GENERIC_1_L4].mask + sizeof(struct udp_hdr),
 963                gp->layer[FILTER_GENERIC_1_L5].mask, vxlan);
 964         memcpy(gp->layer[FILTER_GENERIC_1_L4].val + sizeof(struct udp_hdr),
 965                gp->layer[FILTER_GENERIC_1_L5].val, vxlan);
 966         inner = inner_ofst - vxlan;
 967         memset(layer, 0, sizeof(layer));
 968         memcpy(layer, gp->layer[FILTER_GENERIC_1_L5].mask + vxlan, inner);
 969         memcpy(gp->layer[FILTER_GENERIC_1_L5].mask, layer, sizeof(layer));
 970         memset(layer, 0, sizeof(layer));
 971         memcpy(layer, gp->layer[FILTER_GENERIC_1_L5].val + vxlan, inner);
 972         memcpy(gp->layer[FILTER_GENERIC_1_L5].val, layer, sizeof(layer));
 973 }
 974
 975 /**
 976  * Build the intenal enic filter structure from the provided pattern. The
 977  * pattern is validated as the items are copied.
 978  *
 979  * @param pattern[in]
 980  * @param items_info[in]
 981  *   Info about this NICs item support, like valid previous items.
 982  * @param enic_filter[out]
 983  *   NIC specfilc filters derived from the pattern.
 984  * @param error[out]
 985  */
 986 static int
 987 enic_copy_filter(const struct rte_flow_item pattern[],
 988                  const struct enic_filter_cap *cap,
 989                  struct enic *enic,
 990                  struct filter_v2 *enic_filter,
 991                  struct rte_flow_error *error)
 992 {
 993         int ret;
 994         const struct rte_flow_item *item = pattern;
 995         u8 inner_ofst = 0; /* If encapsulated, ofst into L5 */
 996         enum rte_flow_item_type prev_item;
 997         const struct enic_items *item_info;
 998         struct copy_item_args args;
 999         u8 is_first_item = 1;
1000
1001         FLOW_TRACE();
1002
1003         prev_item = 0;
1004
1005         args.filter = enic_filter;
1006         args.inner_ofst = &inner_ofst;
1007         for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
1008                 /* Get info about how to validate and copy the item. If NULL
1009                  * is returned the nic does not support the item.
1010                  */
1011                 if (item->type == RTE_FLOW_ITEM_TYPE_VOID)
1012                         continue;
1013
1014                 item_info = &cap->item_info[item->type];
1015                 if (item->type > cap->max_item_type ||
1016                     item_info->copy_item == NULL) {
1017                         rte_flow_error_set(error, ENOTSUP,
1018                                 RTE_FLOW_ERROR_TYPE_ITEM,
1019                                 NULL, "Unsupported item.");
1020                         return -rte_errno;
1021                 }
1022
1023                 /* check to see if item stacking is valid */
1024                 if (!item_stacking_valid(prev_item, item_info, is_first_item))
1025                         goto stacking_error;
1026
1027                 args.item = item;
1028                 ret = item_info->copy_item(&args);
1029                 if (ret)
1030                         goto item_not_supported;
1031                 prev_item = item->type;
1032                 is_first_item = 0;
1033         }
1034         fixup_l5_layer(enic, &enic_filter->u.generic_1, inner_ofst);
1035
1036         return 0;
1037
1038 item_not_supported:
1039         rte_flow_error_set(error, ret, RTE_FLOW_ERROR_TYPE_ITEM,
1040                            NULL, "enic type error");
1041         return -rte_errno;
1042
1043 stacking_error:
1044         rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
1045                            item, "stacking error");
1046         return -rte_errno;
1047 }
1048
1049 /**
1050  * Build the intenal version 1 NIC action structure from the provided pattern.
1051  * The pattern is validated as the items are copied.
1052  *
1053  * @param actions[in]
1054  * @param enic_action[out]
1055  *   NIC specfilc actions derived from the actions.
1056  * @param error[out]
1057  */
1058 static int
1059 enic_copy_action_v1(__rte_unused struct enic *enic,
1060                     const struct rte_flow_action actions[],
1061                     struct filter_action_v2 *enic_action)
1062 {
1063         enum { FATE = 1, };
1064         uint32_t overlap = 0;
1065
1066         FLOW_TRACE();
1067
1068         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1069                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID)
1070                         continue;
1071
1072                 switch (actions->type) {
1073                 case RTE_FLOW_ACTION_TYPE_QUEUE: {
1074                         const struct rte_flow_action_queue *queue =
1075                                 (const struct rte_flow_action_queue *)
1076                                 actions->conf;
1077
1078                         if (overlap & FATE)
1079                                 return ENOTSUP;
1080                         overlap |= FATE;
1081                         enic_action->rq_idx =
1082                                 enic_rte_rq_idx_to_sop_idx(queue->index);
1083                         break;
1084                 }
1085                 default:
1086                         RTE_ASSERT(0);
1087                         break;
1088                 }
1089         }
1090         if (!(overlap & FATE))
1091                 return ENOTSUP;
1092         enic_action->type = FILTER_ACTION_RQ_STEERING;
1093         return 0;
1094 }
1095
1096 /**
1097  * Build the intenal version 2 NIC action structure from the provided pattern.
1098  * The pattern is validated as the items are copied.
1099  *
1100  * @param actions[in]
1101  * @param enic_action[out]
1102  *   NIC specfilc actions derived from the actions.
1103  * @param error[out]
1104  */
1105 static int
1106 enic_copy_action_v2(struct enic *enic,
1107                     const struct rte_flow_action actions[],
1108                     struct filter_action_v2 *enic_action)
1109 {
1110         enum { FATE = 1, MARK = 2, };
1111         uint32_t overlap = 0;
1112         bool passthru = false;
1113
1114         FLOW_TRACE();
1115
1116         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1117                 switch (actions->type) {
1118                 case RTE_FLOW_ACTION_TYPE_QUEUE: {
1119                         const struct rte_flow_action_queue *queue =
1120                                 (const struct rte_flow_action_queue *)
1121                                 actions->conf;
1122
1123                         if (overlap & FATE)
1124                                 return ENOTSUP;
1125                         overlap |= FATE;
1126                         enic_action->rq_idx =
1127                                 enic_rte_rq_idx_to_sop_idx(queue->index);
1128                         enic_action->flags |= FILTER_ACTION_RQ_STEERING_FLAG;
1129                         break;
1130                 }
1131                 case RTE_FLOW_ACTION_TYPE_MARK: {
1132                         const struct rte_flow_action_mark *mark =
1133                                 (const struct rte_flow_action_mark *)
1134                                 actions->conf;
1135
1136                         if (overlap & MARK)
1137                                 return ENOTSUP;
1138                         overlap |= MARK;
1139                         /*
1140                          * Map mark ID (32-bit) to filter ID (16-bit):
1141                          * - Reject values > 16 bits
1142                          * - Filter ID 0 is reserved for filters that steer
1143                          *   but not mark. So add 1 to the mark ID to avoid
1144                          *   using 0.
1145                          * - Filter ID (ENIC_MAGIC_FILTER_ID = 0xffff) is
1146                          *   reserved for the "flag" action below.
1147                          */
1148                         if (mark->id >= ENIC_MAGIC_FILTER_ID - 1)
1149                                 return EINVAL;
1150                         enic_action->filter_id = mark->id + 1;
1151                         enic_action->flags |= FILTER_ACTION_FILTER_ID_FLAG;
1152                         break;
1153                 }
1154                 case RTE_FLOW_ACTION_TYPE_FLAG: {
1155                         if (overlap & MARK)
1156                                 return ENOTSUP;
1157                         overlap |= MARK;
1158                         /* ENIC_MAGIC_FILTER_ID is reserved for flagging */
1159                         enic_action->filter_id = ENIC_MAGIC_FILTER_ID;
1160                         enic_action->flags |= FILTER_ACTION_FILTER_ID_FLAG;
1161                         break;
1162                 }
1163                 case RTE_FLOW_ACTION_TYPE_DROP: {
1164                         if (overlap & FATE)
1165                                 return ENOTSUP;
1166                         overlap |= FATE;
1167                         enic_action->flags |= FILTER_ACTION_DROP_FLAG;
1168                         break;
1169                 }
1170                 case RTE_FLOW_ACTION_TYPE_COUNT: {
1171                         enic_action->flags |= FILTER_ACTION_COUNTER_FLAG;
1172                         break;
1173                 }
1174                 case RTE_FLOW_ACTION_TYPE_RSS: {
1175                         const struct rte_flow_action_rss *rss =
1176                                 (const struct rte_flow_action_rss *)
1177                                 actions->conf;
1178                         bool allow;
1179                         uint16_t i;
1180
1181                         /*
1182                          * Hardware does not support general RSS actions, but
1183                          * we can still support the dummy one that is used to
1184                          * "receive normally".
1185                          */
1186                         allow = rss->func == RTE_ETH_HASH_FUNCTION_DEFAULT &&
1187                                 rss->level == 0 &&
1188                                 (rss->types == 0 ||
1189                                  rss->types == enic->rss_hf) &&
1190                                 rss->queue_num == enic->rq_count &&
1191                                 rss->key_len == 0;
1192                         /* Identity queue map is ok */
1193                         for (i = 0; i < rss->queue_num; i++)
1194                                 allow = allow && (i == rss->queue[i]);
1195                         if (!allow)
1196                                 return ENOTSUP;
1197                         if (overlap & FATE)
1198                                 return ENOTSUP;
1199                         /* Need MARK or FLAG */
1200                         if (!(overlap & MARK))
1201                                 return ENOTSUP;
1202                         overlap |= FATE;
1203                         break;
1204                 }
1205                 case RTE_FLOW_ACTION_TYPE_PASSTHRU: {
1206                         /*
1207                          * Like RSS above, PASSTHRU + MARK may be used to
1208                          * "mark and then receive normally". MARK usually comes
1209                          * after PASSTHRU, so remember we have seen passthru
1210                          * and check for mark later.
1211                          */
1212                         if (overlap & FATE)
1213                                 return ENOTSUP;
1214                         overlap |= FATE;
1215                         passthru = true;
1216                         break;
1217                 }
1218                 case RTE_FLOW_ACTION_TYPE_VOID:
1219                         continue;
1220                 default:
1221                         RTE_ASSERT(0);
1222                         break;
1223                 }
1224         }
1225         /* Only PASSTHRU + MARK is allowed */
1226         if (passthru && !(overlap & MARK))
1227                 return ENOTSUP;
1228         if (!(overlap & FATE))
1229                 return ENOTSUP;
1230         enic_action->type = FILTER_ACTION_V2;
1231         return 0;
1232 }
1233
1234 /** Check if the action is supported */
1235 static int
1236 enic_match_action(const struct rte_flow_action *action,
1237                   const enum rte_flow_action_type *supported_actions)
1238 {
1239         for (; *supported_actions != RTE_FLOW_ACTION_TYPE_END;
1240              supported_actions++) {
1241                 if (action->type == *supported_actions)
1242                         return 1;
1243         }
1244         return 0;
1245 }
1246
1247 /** Get the NIC filter capabilties structure */
1248 static const struct enic_filter_cap *
1249 enic_get_filter_cap(struct enic *enic)
1250 {
1251         if (enic->flow_filter_mode)
1252                 return &enic_filter_cap[enic->flow_filter_mode];
1253
1254         return NULL;
1255 }
1256
1257 /** Get the actions for this NIC version. */
1258 static const struct enic_action_cap *
1259 enic_get_action_cap(struct enic *enic)
1260 {
1261         const struct enic_action_cap *ea;
1262         uint8_t actions;
1263
1264         actions = enic->filter_actions;
1265         if (actions & FILTER_ACTION_COUNTER_FLAG)
1266                 ea = &enic_action_cap[FILTER_ACTION_COUNTER_FLAG];
1267         else if (actions & FILTER_ACTION_DROP_FLAG)
1268                 ea = &enic_action_cap[FILTER_ACTION_DROP_FLAG];
1269         else if (actions & FILTER_ACTION_FILTER_ID_FLAG)
1270                 ea = &enic_action_cap[FILTER_ACTION_FILTER_ID_FLAG];
1271         else
1272                 ea = &enic_action_cap[FILTER_ACTION_RQ_STEERING_FLAG];
1273         return ea;
1274 }
1275
1276 /* Debug function to dump internal NIC action structure. */
1277 static void
1278 enic_dump_actions(const struct filter_action_v2 *ea)
1279 {
1280         if (ea->type == FILTER_ACTION_RQ_STEERING) {
1281                 FLOW_LOG(INFO, "Action(V1), queue: %u\n", ea->rq_idx);
1282         } else if (ea->type == FILTER_ACTION_V2) {
1283                 FLOW_LOG(INFO, "Actions(V2)\n");
1284                 if (ea->flags & FILTER_ACTION_RQ_STEERING_FLAG)
1285                         FLOW_LOG(INFO, "\tqueue: %u\n",
1286                                enic_sop_rq_idx_to_rte_idx(ea->rq_idx));
1287                 if (ea->flags & FILTER_ACTION_FILTER_ID_FLAG)
1288                         FLOW_LOG(INFO, "\tfilter_id: %u\n", ea->filter_id);
1289         }
1290 }
1291
1292 /* Debug function to dump internal NIC filter structure. */
1293 static void
1294 enic_dump_filter(const struct filter_v2 *filt)
1295 {
1296         const struct filter_generic_1 *gp;
1297         int i, j, mbyte;
1298         char buf[128], *bp;
1299         char ip4[16], ip6[16], udp[16], tcp[16], tcpudp[16], ip4csum[16];
1300         char l4csum[16], ipfrag[16];
1301
1302         switch (filt->type) {
1303         case FILTER_IPV4_5TUPLE:
1304                 FLOW_LOG(INFO, "FILTER_IPV4_5TUPLE\n");
1305                 break;
1306         case FILTER_USNIC_IP:
1307         case FILTER_DPDK_1:
1308                 /* FIXME: this should be a loop */
1309                 gp = &filt->u.generic_1;
1310                 FLOW_LOG(INFO, "Filter: vlan: 0x%04x, mask: 0x%04x\n",
1311                        gp->val_vlan, gp->mask_vlan);
1312
1313                 if (gp->mask_flags & FILTER_GENERIC_1_IPV4)
1314                         sprintf(ip4, "%s ",
1315                                 (gp->val_flags & FILTER_GENERIC_1_IPV4)
1316                                  ? "ip4(y)" : "ip4(n)");
1317                 else
1318                         sprintf(ip4, "%s ", "ip4(x)");
1319
1320                 if (gp->mask_flags & FILTER_GENERIC_1_IPV6)
1321                         sprintf(ip6, "%s ",
1322                                 (gp->val_flags & FILTER_GENERIC_1_IPV4)
1323                                  ? "ip6(y)" : "ip6(n)");
1324                 else
1325                         sprintf(ip6, "%s ", "ip6(x)");
1326
1327                 if (gp->mask_flags & FILTER_GENERIC_1_UDP)
1328                         sprintf(udp, "%s ",
1329                                 (gp->val_flags & FILTER_GENERIC_1_UDP)
1330                                  ? "udp(y)" : "udp(n)");
1331                 else
1332                         sprintf(udp, "%s ", "udp(x)");
1333
1334                 if (gp->mask_flags & FILTER_GENERIC_1_TCP)
1335                         sprintf(tcp, "%s ",
1336                                 (gp->val_flags & FILTER_GENERIC_1_TCP)
1337                                  ? "tcp(y)" : "tcp(n)");
1338                 else
1339                         sprintf(tcp, "%s ", "tcp(x)");
1340
1341                 if (gp->mask_flags & FILTER_GENERIC_1_TCP_OR_UDP)
1342                         sprintf(tcpudp, "%s ",
1343                                 (gp->val_flags & FILTER_GENERIC_1_TCP_OR_UDP)
1344                                  ? "tcpudp(y)" : "tcpudp(n)");
1345                 else
1346                         sprintf(tcpudp, "%s ", "tcpudp(x)");
1347
1348                 if (gp->mask_flags & FILTER_GENERIC_1_IP4SUM_OK)
1349                         sprintf(ip4csum, "%s ",
1350                                 (gp->val_flags & FILTER_GENERIC_1_IP4SUM_OK)
1351                                  ? "ip4csum(y)" : "ip4csum(n)");
1352                 else
1353                         sprintf(ip4csum, "%s ", "ip4csum(x)");
1354
1355                 if (gp->mask_flags & FILTER_GENERIC_1_L4SUM_OK)
1356                         sprintf(l4csum, "%s ",
1357                                 (gp->val_flags & FILTER_GENERIC_1_L4SUM_OK)
1358                                  ? "l4csum(y)" : "l4csum(n)");
1359                 else
1360                         sprintf(l4csum, "%s ", "l4csum(x)");
1361
1362                 if (gp->mask_flags & FILTER_GENERIC_1_IPFRAG)
1363                         sprintf(ipfrag, "%s ",
1364                                 (gp->val_flags & FILTER_GENERIC_1_IPFRAG)
1365                                  ? "ipfrag(y)" : "ipfrag(n)");
1366                 else
1367                         sprintf(ipfrag, "%s ", "ipfrag(x)");
1368                 FLOW_LOG(INFO, "\tFlags: %s%s%s%s%s%s%s%s\n", ip4, ip6, udp,
1369                          tcp, tcpudp, ip4csum, l4csum, ipfrag);
1370
1371                 for (i = 0; i < FILTER_GENERIC_1_NUM_LAYERS; i++) {
1372                         mbyte = FILTER_GENERIC_1_KEY_LEN - 1;
1373                         while (mbyte && !gp->layer[i].mask[mbyte])
1374                                 mbyte--;
1375                         if (mbyte == 0)
1376                                 continue;
1377
1378                         bp = buf;
1379                         for (j = 0; j <= mbyte; j++) {
1380                                 sprintf(bp, "%02x",
1381                                         gp->layer[i].mask[j]);
1382                                 bp += 2;
1383                         }
1384                         *bp = '\0';
1385                         FLOW_LOG(INFO, "\tL%u mask: %s\n", i + 2, buf);
1386                         bp = buf;
1387                         for (j = 0; j <= mbyte; j++) {
1388                                 sprintf(bp, "%02x",
1389                                         gp->layer[i].val[j]);
1390                                 bp += 2;
1391                         }
1392                         *bp = '\0';
1393                         FLOW_LOG(INFO, "\tL%u  val: %s\n", i + 2, buf);
1394                 }
1395                 break;
1396         default:
1397                 FLOW_LOG(INFO, "FILTER UNKNOWN\n");
1398                 break;
1399         }
1400 }
1401
1402 /* Debug function to dump internal NIC flow structures. */
1403 static void
1404 enic_dump_flow(const struct filter_action_v2 *ea, const struct filter_v2 *filt)
1405 {
1406         enic_dump_filter(filt);
1407         enic_dump_actions(ea);
1408 }
1409
1410
1411 /**
1412  * Internal flow parse/validate function.
1413  *
1414  * @param dev[in]
1415  *   This device pointer.
1416  * @param pattern[in]
1417  * @param actions[in]
1418  * @param error[out]
1419  * @param enic_filter[out]
1420  *   Internal NIC filter structure pointer.
1421  * @param enic_action[out]
1422  *   Internal NIC action structure pointer.
1423  */
1424 static int
1425 enic_flow_parse(struct rte_eth_dev *dev,
1426                 const struct rte_flow_attr *attrs,
1427                 const struct rte_flow_item pattern[],
1428                 const struct rte_flow_action actions[],
1429                 struct rte_flow_error *error,
1430                 struct filter_v2 *enic_filter,
1431                 struct filter_action_v2 *enic_action)
1432 {
1433         unsigned int ret = 0;
1434         struct enic *enic = pmd_priv(dev);
1435         const struct enic_filter_cap *enic_filter_cap;
1436         const struct enic_action_cap *enic_action_cap;
1437         const struct rte_flow_action *action;
1438
1439         FLOW_TRACE();
1440
1441         memset(enic_filter, 0, sizeof(*enic_filter));
1442         memset(enic_action, 0, sizeof(*enic_action));
1443
1444         if (!pattern) {
1445                 rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_NUM,
1446                                    NULL, "No pattern specified");
1447                 return -rte_errno;
1448         }
1449
1450         if (!actions) {
1451                 rte_flow_error_set(error, EINVAL,
1452                                    RTE_FLOW_ERROR_TYPE_ACTION_NUM,
1453                                    NULL, "No action specified");
1454                 return -rte_errno;
1455         }
1456
1457         if (attrs) {
1458                 if (attrs->group) {
1459                         rte_flow_error_set(error, ENOTSUP,
1460                                            RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1461                                            NULL,
1462                                            "priority groups are not supported");
1463                         return -rte_errno;
1464                 } else if (attrs->priority) {
1465                         rte_flow_error_set(error, ENOTSUP,
1466                                            RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1467                                            NULL,
1468                                            "priorities are not supported");
1469                         return -rte_errno;
1470                 } else if (attrs->egress) {
1471                         rte_flow_error_set(error, ENOTSUP,
1472                                            RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
1473                                            NULL,
1474                                            "egress is not supported");
1475                         return -rte_errno;
1476                 } else if (attrs->transfer) {
1477                         rte_flow_error_set(error, ENOTSUP,
1478                                            RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1479                                            NULL,
1480                                            "transfer is not supported");
1481                         return -rte_errno;
1482                 } else if (!attrs->ingress) {
1483                         rte_flow_error_set(error, ENOTSUP,
1484                                            RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1485                                            NULL,
1486                                            "only ingress is supported");
1487                         return -rte_errno;
1488                 }
1489
1490         } else {
1491                 rte_flow_error_set(error, EINVAL,
1492                                    RTE_FLOW_ERROR_TYPE_ATTR,
1493                                    NULL, "No attribute specified");
1494                 return -rte_errno;
1495         }
1496
1497         /* Verify Actions. */
1498         enic_action_cap =  enic_get_action_cap(enic);
1499         for (action = &actions[0]; action->type != RTE_FLOW_ACTION_TYPE_END;
1500              action++) {
1501                 if (action->type == RTE_FLOW_ACTION_TYPE_VOID)
1502                         continue;
1503                 else if (!enic_match_action(action, enic_action_cap->actions))
1504                         break;
1505         }
1506         if (action->type != RTE_FLOW_ACTION_TYPE_END) {
1507                 rte_flow_error_set(error, EPERM, RTE_FLOW_ERROR_TYPE_ACTION,
1508                                    action, "Invalid action.");
1509                 return -rte_errno;
1510         }
1511         ret = enic_action_cap->copy_fn(enic, actions, enic_action);
1512         if (ret) {
1513                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
1514                            NULL, "Unsupported action.");
1515                 return -rte_errno;
1516         }
1517
1518         /* Verify Flow items. If copying the filter from flow format to enic
1519          * format fails, the flow is not supported
1520          */
1521         enic_filter_cap =  enic_get_filter_cap(enic);
1522         if (enic_filter_cap == NULL) {
1523                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
1524                            NULL, "Flow API not available");
1525                 return -rte_errno;
1526         }
1527         enic_filter->type = enic->flow_filter_mode;
1528         ret = enic_copy_filter(pattern, enic_filter_cap, enic,
1529                                        enic_filter, error);
1530         return ret;
1531 }
1532
1533 /**
1534  * Push filter/action to the NIC.
1535  *
1536  * @param enic[in]
1537  *   Device structure pointer.
1538  * @param enic_filter[in]
1539  *   Internal NIC filter structure pointer.
1540  * @param enic_action[in]
1541  *   Internal NIC action structure pointer.
1542  * @param error[out]
1543  */
1544 static struct rte_flow *
1545 enic_flow_add_filter(struct enic *enic, struct filter_v2 *enic_filter,
1546                    struct filter_action_v2 *enic_action,
1547                    struct rte_flow_error *error)
1548 {
1549         struct rte_flow *flow;
1550         int err;
1551         uint16_t entry;
1552         int ctr_idx;
1553         int last_max_flow_ctr;
1554
1555         FLOW_TRACE();
1556
1557         flow = rte_calloc(__func__, 1, sizeof(*flow), 0);
1558         if (!flow) {
1559                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1560                                    NULL, "cannot allocate flow memory");
1561                 return NULL;
1562         }
1563
1564         flow->counter_idx = -1;
1565         last_max_flow_ctr = -1;
1566         if (enic_action->flags & FILTER_ACTION_COUNTER_FLAG) {
1567                 if (!vnic_dev_counter_alloc(enic->vdev, (uint32_t *)&ctr_idx)) {
1568                         rte_flow_error_set(error, ENOMEM,
1569                                            RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1570                                            NULL, "cannot allocate counter");
1571                         goto unwind_flow_alloc;
1572                 }
1573                 flow->counter_idx = ctr_idx;
1574                 enic_action->counter_index = ctr_idx;
1575
1576                 /* If index is the largest, increase the counter DMA size */
1577                 if (ctr_idx > enic->max_flow_counter) {
1578                         err = vnic_dev_counter_dma_cfg(enic->vdev,
1579                                                  VNIC_FLOW_COUNTER_UPDATE_MSECS,
1580                                                  ctr_idx + 1);
1581                         if (err) {
1582                                 rte_flow_error_set(error, -err,
1583                                            RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1584                                            NULL, "counter DMA config failed");
1585                                 goto unwind_ctr_alloc;
1586                         }
1587                         last_max_flow_ctr = enic->max_flow_counter;
1588                         enic->max_flow_counter = ctr_idx;
1589                 }
1590         }
1591
1592         /* entry[in] is the queue id, entry[out] is the filter Id for delete */
1593         entry = enic_action->rq_idx;
1594         err = vnic_dev_classifier(enic->vdev, CLSF_ADD, &entry, enic_filter,
1595                                   enic_action);
1596         if (err) {
1597                 rte_flow_error_set(error, -err, RTE_FLOW_ERROR_TYPE_HANDLE,
1598                                    NULL, "vnic_dev_classifier error");
1599                 goto unwind_ctr_dma_cfg;
1600         }
1601
1602         flow->enic_filter_id = entry;
1603         flow->enic_filter = *enic_filter;
1604
1605         return flow;
1606
1607 /* unwind if there are errors */
1608 unwind_ctr_dma_cfg:
1609         if (last_max_flow_ctr != -1) {
1610                 /* reduce counter DMA size */
1611                 vnic_dev_counter_dma_cfg(enic->vdev,
1612                                          VNIC_FLOW_COUNTER_UPDATE_MSECS,
1613                                          last_max_flow_ctr + 1);
1614                 enic->max_flow_counter = last_max_flow_ctr;
1615         }
1616 unwind_ctr_alloc:
1617         if (flow->counter_idx != -1)
1618                 vnic_dev_counter_free(enic->vdev, ctr_idx);
1619 unwind_flow_alloc:
1620         rte_free(flow);
1621         return NULL;
1622 }
1623
1624 /**
1625  * Remove filter/action from the NIC.
1626  *
1627  * @param enic[in]
1628  *   Device structure pointer.
1629  * @param filter_id[in]
1630  *   Id of NIC filter.
1631  * @param enic_action[in]
1632  *   Internal NIC action structure pointer.
1633  * @param error[out]
1634  */
1635 static int
1636 enic_flow_del_filter(struct enic *enic, struct rte_flow *flow,
1637                    struct rte_flow_error *error)
1638 {
1639         u16 filter_id;
1640         int err;
1641
1642         FLOW_TRACE();
1643
1644         filter_id = flow->enic_filter_id;
1645         err = vnic_dev_classifier(enic->vdev, CLSF_DEL, &filter_id, NULL, NULL);
1646         if (err) {
1647                 rte_flow_error_set(error, -err, RTE_FLOW_ERROR_TYPE_HANDLE,
1648                                    NULL, "vnic_dev_classifier failed");
1649                 return -err;
1650         }
1651
1652         if (flow->counter_idx != -1) {
1653                 if (!vnic_dev_counter_free(enic->vdev, flow->counter_idx))
1654                         dev_err(enic, "counter free failed, idx: %d\n",
1655                                 flow->counter_idx);
1656                 flow->counter_idx = -1;
1657         }
1658         return 0;
1659 }
1660
1661 /*
1662  * The following functions are callbacks for Generic flow API.
1663  */
1664
1665 /**
1666  * Validate a flow supported by the NIC.
1667  *
1668  * @see rte_flow_validate()
1669  * @see rte_flow_ops
1670  */
1671 static int
1672 enic_flow_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attrs,
1673                    const struct rte_flow_item pattern[],
1674                    const struct rte_flow_action actions[],
1675                    struct rte_flow_error *error)
1676 {
1677         struct filter_v2 enic_filter;
1678         struct filter_action_v2 enic_action;
1679         int ret;
1680
1681         FLOW_TRACE();
1682
1683         ret = enic_flow_parse(dev, attrs, pattern, actions, error,
1684                                &enic_filter, &enic_action);
1685         if (!ret)
1686                 enic_dump_flow(&enic_action, &enic_filter);
1687         return ret;
1688 }
1689
1690 /**
1691  * Create a flow supported by the NIC.
1692  *
1693  * @see rte_flow_create()
1694  * @see rte_flow_ops
1695  */
1696 static struct rte_flow *
1697 enic_flow_create(struct rte_eth_dev *dev,
1698                  const struct rte_flow_attr *attrs,
1699                  const struct rte_flow_item pattern[],
1700                  const struct rte_flow_action actions[],
1701                  struct rte_flow_error *error)
1702 {
1703         int ret;
1704         struct filter_v2 enic_filter;
1705         struct filter_action_v2 enic_action;
1706         struct rte_flow *flow;
1707         struct enic *enic = pmd_priv(dev);
1708
1709         FLOW_TRACE();
1710
1711         ret = enic_flow_parse(dev, attrs, pattern, actions, error, &enic_filter,
1712                               &enic_action);
1713         if (ret < 0)
1714                 return NULL;
1715
1716         rte_spinlock_lock(&enic->flows_lock);
1717         flow = enic_flow_add_filter(enic, &enic_filter, &enic_action,
1718                                     error);
1719         if (flow)
1720                 LIST_INSERT_HEAD(&enic->flows, flow, next);
1721         rte_spinlock_unlock(&enic->flows_lock);
1722
1723         return flow;
1724 }
1725
1726 /**
1727  * Destroy a flow supported by the NIC.
1728  *
1729  * @see rte_flow_destroy()
1730  * @see rte_flow_ops
1731  */
1732 static int
1733 enic_flow_destroy(struct rte_eth_dev *dev, struct rte_flow *flow,
1734                   __rte_unused struct rte_flow_error *error)
1735 {
1736         struct enic *enic = pmd_priv(dev);
1737
1738         FLOW_TRACE();
1739
1740         rte_spinlock_lock(&enic->flows_lock);
1741         enic_flow_del_filter(enic, flow, error);
1742         LIST_REMOVE(flow, next);
1743         rte_spinlock_unlock(&enic->flows_lock);
1744         rte_free(flow);
1745         return 0;
1746 }
1747
1748 /**
1749  * Flush all flows on the device.
1750  *
1751  * @see rte_flow_flush()
1752  * @see rte_flow_ops
1753  */
1754 static int
1755 enic_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
1756 {
1757         struct rte_flow *flow;
1758         struct enic *enic = pmd_priv(dev);
1759
1760         FLOW_TRACE();
1761
1762         rte_spinlock_lock(&enic->flows_lock);
1763
1764         while (!LIST_EMPTY(&enic->flows)) {
1765                 flow = LIST_FIRST(&enic->flows);
1766                 enic_flow_del_filter(enic, flow, error);
1767                 LIST_REMOVE(flow, next);
1768                 rte_free(flow);
1769         }
1770         rte_spinlock_unlock(&enic->flows_lock);
1771         return 0;
1772 }
1773
1774 static int
1775 enic_flow_query_count(struct rte_eth_dev *dev,
1776                       struct rte_flow *flow, void *data,
1777                       struct rte_flow_error *error)
1778 {
1779         struct enic *enic = pmd_priv(dev);
1780         struct rte_flow_query_count *query;
1781         uint64_t packets, bytes;
1782
1783         FLOW_TRACE();
1784
1785         if (flow->counter_idx == -1) {
1786                 return rte_flow_error_set(error, ENOTSUP,
1787                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1788                                           NULL,
1789                                           "flow does not have counter");
1790         }
1791         query = (struct rte_flow_query_count *)data;
1792         if (!vnic_dev_counter_query(enic->vdev, flow->counter_idx,
1793                                     !!query->reset, &packets, &bytes)) {
1794                 return rte_flow_error_set
1795                         (error, EINVAL,
1796                          RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1797                          NULL,
1798                          "cannot read counter");
1799         }
1800         query->hits_set = 1;
1801         query->bytes_set = 1;
1802         query->hits = packets;
1803         query->bytes = bytes;
1804         return 0;
1805 }
1806
1807 static int
1808 enic_flow_query(struct rte_eth_dev *dev,
1809                 struct rte_flow *flow,
1810                 const struct rte_flow_action *actions,
1811                 void *data,
1812                 struct rte_flow_error *error)
1813 {
1814         int ret = 0;
1815
1816         FLOW_TRACE();
1817
1818         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1819                 switch (actions->type) {
1820                 case RTE_FLOW_ACTION_TYPE_VOID:
1821                         break;
1822                 case RTE_FLOW_ACTION_TYPE_COUNT:
1823                         ret = enic_flow_query_count(dev, flow, data, error);
1824                         break;
1825                 default:
1826                         return rte_flow_error_set(error, ENOTSUP,
1827                                                   RTE_FLOW_ERROR_TYPE_ACTION,
1828                                                   actions,
1829                                                   "action not supported");
1830                 }
1831                 if (ret < 0)
1832                         return ret;
1833         }
1834         return 0;
1835 }
1836
1837 /**
1838  * Flow callback registration.
1839  *
1840  * @see rte_flow_ops
1841  */
1842 const struct rte_flow_ops enic_flow_ops = {
1843         .validate = enic_flow_validate,
1844         .create = enic_flow_create,
1845         .destroy = enic_flow_destroy,
1846         .flush = enic_flow_flush,
1847         .query = enic_flow_query,
1848 };