drivers/net/sfc/sfc_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2017-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  *
   6  * This software was jointly developed between OKTET Labs (under contract
   7  * for Solarflare) and Solarflare Communications, Inc.
   8  */
   9
  10 #include <rte_byteorder.h>
  11 #include <rte_tailq.h>
  12 #include <rte_common.h>
  13 #include <rte_ethdev_driver.h>
  14 #include <rte_ether.h>
  15 #include <rte_flow.h>
  16 #include <rte_flow_driver.h>
  17
  18 #include "efx.h"
  19
  20 #include "sfc.h"
  21 #include "sfc_rx.h"
  22 #include "sfc_filter.h"
  23 #include "sfc_flow.h"
  24 #include "sfc_log.h"
  25 #include "sfc_dp_rx.h"
  26
  27 /*
  28  * At now flow API is implemented in such a manner that each
  29  * flow rule is converted to one or more hardware filters.
  30  * All elements of flow rule (attributes, pattern items, actions)
  31  * correspond to one or more fields in the efx_filter_spec_s structure
  32  * that is responsible for the hardware filter.
  33  * If some required field is unset in the flow rule, then a handful
  34  * of filter copies will be created to cover all possible values
  35  * of such a field.
  36  */
  37
  38 enum sfc_flow_item_layers {
  39         SFC_FLOW_ITEM_ANY_LAYER,
  40         SFC_FLOW_ITEM_START_LAYER,
  41         SFC_FLOW_ITEM_L2,
  42         SFC_FLOW_ITEM_L3,
  43         SFC_FLOW_ITEM_L4,
  44 };
  45
  46 typedef int (sfc_flow_item_parse)(const struct rte_flow_item *item,
  47                                   efx_filter_spec_t *spec,
  48                                   struct rte_flow_error *error);
  49
  50 struct sfc_flow_item {
  51         enum rte_flow_item_type type;           /* Type of item */
  52         enum sfc_flow_item_layers layer;        /* Layer of item */
  53         enum sfc_flow_item_layers prev_layer;   /* Previous layer of item */
  54         sfc_flow_item_parse *parse;             /* Parsing function */
  55 };
  56
  57 static sfc_flow_item_parse sfc_flow_parse_void;
  58 static sfc_flow_item_parse sfc_flow_parse_eth;
  59 static sfc_flow_item_parse sfc_flow_parse_vlan;
  60 static sfc_flow_item_parse sfc_flow_parse_ipv4;
  61 static sfc_flow_item_parse sfc_flow_parse_ipv6;
  62 static sfc_flow_item_parse sfc_flow_parse_tcp;
  63 static sfc_flow_item_parse sfc_flow_parse_udp;
  64 static sfc_flow_item_parse sfc_flow_parse_vxlan;
  65 static sfc_flow_item_parse sfc_flow_parse_geneve;
  66 static sfc_flow_item_parse sfc_flow_parse_nvgre;
  67
  68 typedef int (sfc_flow_spec_set_vals)(struct sfc_flow_spec *spec,
  69                                      unsigned int filters_count_for_one_val,
  70                                      struct rte_flow_error *error);
  71
  72 typedef boolean_t (sfc_flow_spec_check)(efx_filter_match_flags_t match,
  73                                         efx_filter_spec_t *spec,
  74                                         struct sfc_filter *filter);
  75
  76 struct sfc_flow_copy_flag {
  77         /* EFX filter specification match flag */
  78         efx_filter_match_flags_t flag;
  79         /* Number of values of corresponding field */
  80         unsigned int vals_count;
  81         /* Function to set values in specifications */
  82         sfc_flow_spec_set_vals *set_vals;
  83         /*
  84          * Function to check that the specification is suitable
  85          * for adding this match flag
  86          */
  87         sfc_flow_spec_check *spec_check;
  88 };
  89
  90 static sfc_flow_spec_set_vals sfc_flow_set_unknown_dst_flags;
  91 static sfc_flow_spec_check sfc_flow_check_unknown_dst_flags;
  92 static sfc_flow_spec_set_vals sfc_flow_set_ethertypes;
  93 static sfc_flow_spec_set_vals sfc_flow_set_ifrm_unknown_dst_flags;
  94 static sfc_flow_spec_check sfc_flow_check_ifrm_unknown_dst_flags;
  95 static sfc_flow_spec_set_vals sfc_flow_set_outer_vid_flag;
  96 static sfc_flow_spec_check sfc_flow_check_outer_vid_flag;
  97
  98 static boolean_t
  99 sfc_flow_is_zero(const uint8_t *buf, unsigned int size)
 100 {
 101         uint8_t sum = 0;
 102         unsigned int i;
 103
 104         for (i = 0; i < size; i++)
 105                 sum |= buf[i];
 106
 107         return (sum == 0) ? B_TRUE : B_FALSE;
 108 }
 109
 110 /*
 111  * Validate item and prepare structures spec and mask for parsing
 112  */
 113 static int
 114 sfc_flow_parse_init(const struct rte_flow_item *item,
 115                     const void **spec_ptr,
 116                     const void **mask_ptr,
 117                     const void *supp_mask,
 118                     const void *def_mask,
 119                     unsigned int size,
 120                     struct rte_flow_error *error)
 121 {
 122         const uint8_t *spec;
 123         const uint8_t *mask;
 124         const uint8_t *last;
 125         uint8_t supp;
 126         unsigned int i;
 127
 128         if (item == NULL) {
 129                 rte_flow_error_set(error, EINVAL,
 130                                    RTE_FLOW_ERROR_TYPE_ITEM, NULL,
 131                                    "NULL item");
 132                 return -rte_errno;
 133         }
 134
 135         if ((item->last != NULL || item->mask != NULL) && item->spec == NULL) {
 136                 rte_flow_error_set(error, EINVAL,
 137                                    RTE_FLOW_ERROR_TYPE_ITEM, item,
 138                                    "Mask or last is set without spec");
 139                 return -rte_errno;
 140         }
 141
 142         /*
 143          * If "mask" is not set, default mask is used,
 144          * but if default mask is NULL, "mask" should be set
 145          */
 146         if (item->mask == NULL) {
 147                 if (def_mask == NULL) {
 148                         rte_flow_error_set(error, EINVAL,
 149                                 RTE_FLOW_ERROR_TYPE_ITEM, NULL,
 150                                 "Mask should be specified");
 151                         return -rte_errno;
 152                 }
 153
 154                 mask = def_mask;
 155         } else {
 156                 mask = item->mask;
 157         }
 158
 159         spec = item->spec;
 160         last = item->last;
 161
 162         if (spec == NULL)
 163                 goto exit;
 164
 165         /*
 166          * If field values in "last" are either 0 or equal to the corresponding
 167          * values in "spec" then they are ignored
 168          */
 169         if (last != NULL &&
 170             !sfc_flow_is_zero(last, size) &&
 171             memcmp(last, spec, size) != 0) {
 172                 rte_flow_error_set(error, ENOTSUP,
 173                                    RTE_FLOW_ERROR_TYPE_ITEM, item,
 174                                    "Ranging is not supported");
 175                 return -rte_errno;
 176         }
 177
 178         if (supp_mask == NULL) {
 179                 rte_flow_error_set(error, EINVAL,
 180                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
 181                         "Supported mask for item should be specified");
 182                 return -rte_errno;
 183         }
 184
 185         /* Check that mask does not ask for more match than supp_mask */
 186         for (i = 0; i < size; i++) {
 187                 supp = ((const uint8_t *)supp_mask)[i];
 188
 189                 if (~supp & mask[i]) {
 190                         rte_flow_error_set(error, ENOTSUP,
 191                                            RTE_FLOW_ERROR_TYPE_ITEM, item,
 192                                            "Item's field is not supported");
 193                         return -rte_errno;
 194                 }
 195         }
 196
 197 exit:
 198         *spec_ptr = spec;
 199         *mask_ptr = mask;
 200         return 0;
 201 }
 202
 203 /*
 204  * Protocol parsers.
 205  * Masking is not supported, so masks in items should be either
 206  * full or empty (zeroed) and set only for supported fields which
 207  * are specified in the supp_mask.
 208  */
 209
 210 static int
 211 sfc_flow_parse_void(__rte_unused const struct rte_flow_item *item,
 212                     __rte_unused efx_filter_spec_t *efx_spec,
 213                     __rte_unused struct rte_flow_error *error)
 214 {
 215         return 0;
 216 }
 217
 218 /**
 219  * Convert Ethernet item to EFX filter specification.
 220  *
 221  * @param item[in]
 222  *   Item specification. Outer frame specification may only comprise
 223  *   source/destination addresses and Ethertype field.
 224  *   Inner frame specification may contain destination address only.
 225  *   There is support for individual/group mask as well as for empty and full.
 226  *   If the mask is NULL, default mask will be used. Ranging is not supported.
 227  * @param efx_spec[in, out]
 228  *   EFX filter specification to update.
 229  * @param[out] error
 230  *   Perform verbose error reporting if not NULL.
 231  */
 232 static int
 233 sfc_flow_parse_eth(const struct rte_flow_item *item,
 234                    efx_filter_spec_t *efx_spec,
 235                    struct rte_flow_error *error)
 236 {
 237         int rc;
 238         const struct rte_flow_item_eth *spec = NULL;
 239         const struct rte_flow_item_eth *mask = NULL;
 240         const struct rte_flow_item_eth supp_mask = {
 241                 .dst.addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
 242                 .src.addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
 243                 .type = 0xffff,
 244         };
 245         const struct rte_flow_item_eth ifrm_supp_mask = {
 246                 .dst.addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
 247         };
 248         const uint8_t ig_mask[EFX_MAC_ADDR_LEN] = {
 249                 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
 250         };
 251         const struct rte_flow_item_eth *supp_mask_p;
 252         const struct rte_flow_item_eth *def_mask_p;
 253         uint8_t *loc_mac = NULL;
 254         boolean_t is_ifrm = (efx_spec->efs_encap_type !=
 255                 EFX_TUNNEL_PROTOCOL_NONE);
 256
 257         if (is_ifrm) {
 258                 supp_mask_p = &ifrm_supp_mask;
 259                 def_mask_p = &ifrm_supp_mask;
 260                 loc_mac = efx_spec->efs_ifrm_loc_mac;
 261         } else {
 262                 supp_mask_p = &supp_mask;
 263                 def_mask_p = &rte_flow_item_eth_mask;
 264                 loc_mac = efx_spec->efs_loc_mac;
 265         }
 266
 267         rc = sfc_flow_parse_init(item,
 268                                  (const void **)&spec,
 269                                  (const void **)&mask,
 270                                  supp_mask_p, def_mask_p,
 271                                  sizeof(struct rte_flow_item_eth),
 272                                  error);
 273         if (rc != 0)
 274                 return rc;
 275
 276         /* If "spec" is not set, could be any Ethernet */
 277         if (spec == NULL)
 278                 return 0;
 279
 280         if (rte_is_same_ether_addr(&mask->dst, &supp_mask.dst)) {
 281                 efx_spec->efs_match_flags |= is_ifrm ?
 282                         EFX_FILTER_MATCH_IFRM_LOC_MAC :
 283                         EFX_FILTER_MATCH_LOC_MAC;
 284                 rte_memcpy(loc_mac, spec->dst.addr_bytes,
 285                            EFX_MAC_ADDR_LEN);
 286         } else if (memcmp(mask->dst.addr_bytes, ig_mask,
 287                           EFX_MAC_ADDR_LEN) == 0) {
 288                 if (rte_is_unicast_ether_addr(&spec->dst))
 289                         efx_spec->efs_match_flags |= is_ifrm ?
 290                                 EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST :
 291                                 EFX_FILTER_MATCH_UNKNOWN_UCAST_DST;
 292                 else
 293                         efx_spec->efs_match_flags |= is_ifrm ?
 294                                 EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST :
 295                                 EFX_FILTER_MATCH_UNKNOWN_MCAST_DST;
 296         } else if (!rte_is_zero_ether_addr(&mask->dst)) {
 297                 goto fail_bad_mask;
 298         }
 299
 300         /*
 301          * ifrm_supp_mask ensures that the source address and
 302          * ethertype masks are equal to zero in inner frame,
 303          * so these fields are filled in only for the outer frame
 304          */
 305         if (rte_is_same_ether_addr(&mask->src, &supp_mask.src)) {
 306                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_MAC;
 307                 rte_memcpy(efx_spec->efs_rem_mac, spec->src.addr_bytes,
 308                            EFX_MAC_ADDR_LEN);
 309         } else if (!rte_is_zero_ether_addr(&mask->src)) {
 310                 goto fail_bad_mask;
 311         }
 312
 313         /*
 314          * Ether type is in big-endian byte order in item and
 315          * in little-endian in efx_spec, so byte swap is used
 316          */
 317         if (mask->type == supp_mask.type) {
 318                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
 319                 efx_spec->efs_ether_type = rte_bswap16(spec->type);
 320         } else if (mask->type != 0) {
 321                 goto fail_bad_mask;
 322         }
 323
 324         return 0;
 325
 326 fail_bad_mask:
 327         rte_flow_error_set(error, EINVAL,
 328                            RTE_FLOW_ERROR_TYPE_ITEM, item,
 329                            "Bad mask in the ETH pattern item");
 330         return -rte_errno;
 331 }
 332
 333 /**
 334  * Convert VLAN item to EFX filter specification.
 335  *
 336  * @param item[in]
 337  *   Item specification. Only VID field is supported.
 338  *   The mask can not be NULL. Ranging is not supported.
 339  * @param efx_spec[in, out]
 340  *   EFX filter specification to update.
 341  * @param[out] error
 342  *   Perform verbose error reporting if not NULL.
 343  */
 344 static int
 345 sfc_flow_parse_vlan(const struct rte_flow_item *item,
 346                     efx_filter_spec_t *efx_spec,
 347                     struct rte_flow_error *error)
 348 {
 349         int rc;
 350         uint16_t vid;
 351         const struct rte_flow_item_vlan *spec = NULL;
 352         const struct rte_flow_item_vlan *mask = NULL;
 353         const struct rte_flow_item_vlan supp_mask = {
 354                 .tci = rte_cpu_to_be_16(ETH_VLAN_ID_MAX),
 355                 .inner_type = RTE_BE16(0xffff),
 356         };
 357
 358         rc = sfc_flow_parse_init(item,
 359                                  (const void **)&spec,
 360                                  (const void **)&mask,
 361                                  &supp_mask,
 362                                  NULL,
 363                                  sizeof(struct rte_flow_item_vlan),
 364                                  error);
 365         if (rc != 0)
 366                 return rc;
 367
 368         /*
 369          * VID is in big-endian byte order in item and
 370          * in little-endian in efx_spec, so byte swap is used.
 371          * If two VLAN items are included, the first matches
 372          * the outer tag and the next matches the inner tag.
 373          */
 374         if (mask->tci == supp_mask.tci) {
 375                 /* Apply mask to keep VID only */
 376                 vid = rte_bswap16(spec->tci & mask->tci);
 377
 378                 if (!(efx_spec->efs_match_flags &
 379                       EFX_FILTER_MATCH_OUTER_VID)) {
 380                         efx_spec->efs_match_flags |= EFX_FILTER_MATCH_OUTER_VID;
 381                         efx_spec->efs_outer_vid = vid;
 382                 } else if (!(efx_spec->efs_match_flags &
 383                              EFX_FILTER_MATCH_INNER_VID)) {
 384                         efx_spec->efs_match_flags |= EFX_FILTER_MATCH_INNER_VID;
 385                         efx_spec->efs_inner_vid = vid;
 386                 } else {
 387                         rte_flow_error_set(error, EINVAL,
 388                                            RTE_FLOW_ERROR_TYPE_ITEM, item,
 389                                            "More than two VLAN items");
 390                         return -rte_errno;
 391                 }
 392         } else {
 393                 rte_flow_error_set(error, EINVAL,
 394                                    RTE_FLOW_ERROR_TYPE_ITEM, item,
 395                                    "VLAN ID in TCI match is required");
 396                 return -rte_errno;
 397         }
 398
 399         if (efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE) {
 400                 rte_flow_error_set(error, EINVAL,
 401                                    RTE_FLOW_ERROR_TYPE_ITEM, item,
 402                                    "VLAN TPID matching is not supported");
 403                 return -rte_errno;
 404         }
 405         if (mask->inner_type == supp_mask.inner_type) {
 406                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
 407                 efx_spec->efs_ether_type = rte_bswap16(spec->inner_type);
 408         } else if (mask->inner_type) {
 409                 rte_flow_error_set(error, EINVAL,
 410                                    RTE_FLOW_ERROR_TYPE_ITEM, item,
 411                                    "Bad mask for VLAN inner_type");
 412                 return -rte_errno;
 413         }
 414
 415         return 0;
 416 }
 417
 418 /**
 419  * Convert IPv4 item to EFX filter specification.
 420  *
 421  * @param item[in]
 422  *   Item specification. Only source and destination addresses and
 423  *   protocol fields are supported. If the mask is NULL, default
 424  *   mask will be used. Ranging is not supported.
 425  * @param efx_spec[in, out]
 426  *   EFX filter specification to update.
 427  * @param[out] error
 428  *   Perform verbose error reporting if not NULL.
 429  */
 430 static int
 431 sfc_flow_parse_ipv4(const struct rte_flow_item *item,
 432                     efx_filter_spec_t *efx_spec,
 433                     struct rte_flow_error *error)
 434 {
 435         int rc;
 436         const struct rte_flow_item_ipv4 *spec = NULL;
 437         const struct rte_flow_item_ipv4 *mask = NULL;
 438         const uint16_t ether_type_ipv4 = rte_cpu_to_le_16(EFX_ETHER_TYPE_IPV4);
 439         const struct rte_flow_item_ipv4 supp_mask = {
 440                 .hdr = {
 441                         .src_addr = 0xffffffff,
 442                         .dst_addr = 0xffffffff,
 443                         .next_proto_id = 0xff,
 444                 }
 445         };
 446
 447         rc = sfc_flow_parse_init(item,
 448                                  (const void **)&spec,
 449                                  (const void **)&mask,
 450                                  &supp_mask,
 451                                  &rte_flow_item_ipv4_mask,
 452                                  sizeof(struct rte_flow_item_ipv4),
 453                                  error);
 454         if (rc != 0)
 455                 return rc;
 456
 457         /*
 458          * Filtering by IPv4 source and destination addresses requires
 459          * the appropriate ETHER_TYPE in hardware filters
 460          */
 461         if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE)) {
 462                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
 463                 efx_spec->efs_ether_type = ether_type_ipv4;
 464         } else if (efx_spec->efs_ether_type != ether_type_ipv4) {
 465                 rte_flow_error_set(error, EINVAL,
 466                         RTE_FLOW_ERROR_TYPE_ITEM, item,
 467                         "Ethertype in pattern with IPV4 item should be appropriate");
 468                 return -rte_errno;
 469         }
 470
 471         if (spec == NULL)
 472                 return 0;
 473
 474         /*
 475          * IPv4 addresses are in big-endian byte order in item and in
 476          * efx_spec
 477          */
 478         if (mask->hdr.src_addr == supp_mask.hdr.src_addr) {
 479                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_HOST;
 480                 efx_spec->efs_rem_host.eo_u32[0] = spec->hdr.src_addr;
 481         } else if (mask->hdr.src_addr != 0) {
 482                 goto fail_bad_mask;
 483         }
 484
 485         if (mask->hdr.dst_addr == supp_mask.hdr.dst_addr) {
 486                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_HOST;
 487                 efx_spec->efs_loc_host.eo_u32[0] = spec->hdr.dst_addr;
 488         } else if (mask->hdr.dst_addr != 0) {
 489                 goto fail_bad_mask;
 490         }
 491
 492         if (mask->hdr.next_proto_id == supp_mask.hdr.next_proto_id) {
 493                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO;
 494                 efx_spec->efs_ip_proto = spec->hdr.next_proto_id;
 495         } else if (mask->hdr.next_proto_id != 0) {
 496                 goto fail_bad_mask;
 497         }
 498
 499         return 0;
 500
 501 fail_bad_mask:
 502         rte_flow_error_set(error, EINVAL,
 503                            RTE_FLOW_ERROR_TYPE_ITEM, item,
 504                            "Bad mask in the IPV4 pattern item");
 505         return -rte_errno;
 506 }
 507
 508 /**
 509  * Convert IPv6 item to EFX filter specification.
 510  *
 511  * @param item[in]
 512  *   Item specification. Only source and destination addresses and
 513  *   next header fields are supported. If the mask is NULL, default
 514  *   mask will be used. Ranging is not supported.
 515  * @param efx_spec[in, out]
 516  *   EFX filter specification to update.
 517  * @param[out] error
 518  *   Perform verbose error reporting if not NULL.
 519  */
 520 static int
 521 sfc_flow_parse_ipv6(const struct rte_flow_item *item,
 522                     efx_filter_spec_t *efx_spec,
 523                     struct rte_flow_error *error)
 524 {
 525         int rc;
 526         const struct rte_flow_item_ipv6 *spec = NULL;
 527         const struct rte_flow_item_ipv6 *mask = NULL;
 528         const uint16_t ether_type_ipv6 = rte_cpu_to_le_16(EFX_ETHER_TYPE_IPV6);
 529         const struct rte_flow_item_ipv6 supp_mask = {
 530                 .hdr = {
 531                         .src_addr = { 0xff, 0xff, 0xff, 0xff,
 532                                       0xff, 0xff, 0xff, 0xff,
 533                                       0xff, 0xff, 0xff, 0xff,
 534                                       0xff, 0xff, 0xff, 0xff },
 535                         .dst_addr = { 0xff, 0xff, 0xff, 0xff,
 536                                       0xff, 0xff, 0xff, 0xff,
 537                                       0xff, 0xff, 0xff, 0xff,
 538                                       0xff, 0xff, 0xff, 0xff },
 539                         .proto = 0xff,
 540                 }
 541         };
 542
 543         rc = sfc_flow_parse_init(item,
 544                                  (const void **)&spec,
 545                                  (const void **)&mask,
 546                                  &supp_mask,
 547                                  &rte_flow_item_ipv6_mask,
 548                                  sizeof(struct rte_flow_item_ipv6),
 549                                  error);
 550         if (rc != 0)
 551                 return rc;
 552
 553         /*
 554          * Filtering by IPv6 source and destination addresses requires
 555          * the appropriate ETHER_TYPE in hardware filters
 556          */
 557         if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE)) {
 558                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
 559                 efx_spec->efs_ether_type = ether_type_ipv6;
 560         } else if (efx_spec->efs_ether_type != ether_type_ipv6) {
 561                 rte_flow_error_set(error, EINVAL,
 562                         RTE_FLOW_ERROR_TYPE_ITEM, item,
 563                         "Ethertype in pattern with IPV6 item should be appropriate");
 564                 return -rte_errno;
 565         }
 566
 567         if (spec == NULL)
 568                 return 0;
 569
 570         /*
 571          * IPv6 addresses are in big-endian byte order in item and in
 572          * efx_spec
 573          */
 574         if (memcmp(mask->hdr.src_addr, supp_mask.hdr.src_addr,
 575                    sizeof(mask->hdr.src_addr)) == 0) {
 576                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_HOST;
 577
 578                 RTE_BUILD_BUG_ON(sizeof(efx_spec->efs_rem_host) !=
 579                                  sizeof(spec->hdr.src_addr));
 580                 rte_memcpy(&efx_spec->efs_rem_host, spec->hdr.src_addr,
 581                            sizeof(efx_spec->efs_rem_host));
 582         } else if (!sfc_flow_is_zero(mask->hdr.src_addr,
 583                                      sizeof(mask->hdr.src_addr))) {
 584                 goto fail_bad_mask;
 585         }
 586
 587         if (memcmp(mask->hdr.dst_addr, supp_mask.hdr.dst_addr,
 588                    sizeof(mask->hdr.dst_addr)) == 0) {
 589                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_HOST;
 590
 591                 RTE_BUILD_BUG_ON(sizeof(efx_spec->efs_loc_host) !=
 592                                  sizeof(spec->hdr.dst_addr));
 593                 rte_memcpy(&efx_spec->efs_loc_host, spec->hdr.dst_addr,
 594                            sizeof(efx_spec->efs_loc_host));
 595         } else if (!sfc_flow_is_zero(mask->hdr.dst_addr,
 596                                      sizeof(mask->hdr.dst_addr))) {
 597                 goto fail_bad_mask;
 598         }
 599
 600         if (mask->hdr.proto == supp_mask.hdr.proto) {
 601                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO;
 602                 efx_spec->efs_ip_proto = spec->hdr.proto;
 603         } else if (mask->hdr.proto != 0) {
 604                 goto fail_bad_mask;
 605         }
 606
 607         return 0;
 608
 609 fail_bad_mask:
 610         rte_flow_error_set(error, EINVAL,
 611                            RTE_FLOW_ERROR_TYPE_ITEM, item,
 612                            "Bad mask in the IPV6 pattern item");
 613         return -rte_errno;
 614 }
 615
 616 /**
 617  * Convert TCP item to EFX filter specification.
 618  *
 619  * @param item[in]
 620  *   Item specification. Only source and destination ports fields
 621  *   are supported. If the mask is NULL, default mask will be used.
 622  *   Ranging is not supported.
 623  * @param efx_spec[in, out]
 624  *   EFX filter specification to update.
 625  * @param[out] error
 626  *   Perform verbose error reporting if not NULL.
 627  */
 628 static int
 629 sfc_flow_parse_tcp(const struct rte_flow_item *item,
 630                    efx_filter_spec_t *efx_spec,
 631                    struct rte_flow_error *error)
 632 {
 633         int rc;
 634         const struct rte_flow_item_tcp *spec = NULL;
 635         const struct rte_flow_item_tcp *mask = NULL;
 636         const struct rte_flow_item_tcp supp_mask = {
 637                 .hdr = {
 638                         .src_port = 0xffff,
 639                         .dst_port = 0xffff,
 640                 }
 641         };
 642
 643         rc = sfc_flow_parse_init(item,
 644                                  (const void **)&spec,
 645                                  (const void **)&mask,
 646                                  &supp_mask,
 647                                  &rte_flow_item_tcp_mask,
 648                                  sizeof(struct rte_flow_item_tcp),
 649                                  error);
 650         if (rc != 0)
 651                 return rc;
 652
 653         /*
 654          * Filtering by TCP source and destination ports requires
 655          * the appropriate IP_PROTO in hardware filters
 656          */
 657         if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_IP_PROTO)) {
 658                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO;
 659                 efx_spec->efs_ip_proto = EFX_IPPROTO_TCP;
 660         } else if (efx_spec->efs_ip_proto != EFX_IPPROTO_TCP) {
 661                 rte_flow_error_set(error, EINVAL,
 662                         RTE_FLOW_ERROR_TYPE_ITEM, item,
 663                         "IP proto in pattern with TCP item should be appropriate");
 664                 return -rte_errno;
 665         }
 666
 667         if (spec == NULL)
 668                 return 0;
 669
 670         /*
 671          * Source and destination ports are in big-endian byte order in item and
 672          * in little-endian in efx_spec, so byte swap is used
 673          */
 674         if (mask->hdr.src_port == supp_mask.hdr.src_port) {
 675                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_PORT;
 676                 efx_spec->efs_rem_port = rte_bswap16(spec->hdr.src_port);
 677         } else if (mask->hdr.src_port != 0) {
 678                 goto fail_bad_mask;
 679         }
 680
 681         if (mask->hdr.dst_port == supp_mask.hdr.dst_port) {
 682                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_PORT;
 683                 efx_spec->efs_loc_port = rte_bswap16(spec->hdr.dst_port);
 684         } else if (mask->hdr.dst_port != 0) {
 685                 goto fail_bad_mask;
 686         }
 687
 688         return 0;
 689
 690 fail_bad_mask:
 691         rte_flow_error_set(error, EINVAL,
 692                            RTE_FLOW_ERROR_TYPE_ITEM, item,
 693                            "Bad mask in the TCP pattern item");
 694         return -rte_errno;
 695 }
 696
 697 /**
 698  * Convert UDP item to EFX filter specification.
 699  *
 700  * @param item[in]
 701  *   Item specification. Only source and destination ports fields
 702  *   are supported. If the mask is NULL, default mask will be used.
 703  *   Ranging is not supported.
 704  * @param efx_spec[in, out]
 705  *   EFX filter specification to update.
 706  * @param[out] error
 707  *   Perform verbose error reporting if not NULL.
 708  */
 709 static int
 710 sfc_flow_parse_udp(const struct rte_flow_item *item,
 711                    efx_filter_spec_t *efx_spec,
 712                    struct rte_flow_error *error)
 713 {
 714         int rc;
 715         const struct rte_flow_item_udp *spec = NULL;
 716         const struct rte_flow_item_udp *mask = NULL;
 717         const struct rte_flow_item_udp supp_mask = {
 718                 .hdr = {
 719                         .src_port = 0xffff,
 720                         .dst_port = 0xffff,
 721                 }
 722         };
 723
 724         rc = sfc_flow_parse_init(item,
 725                                  (const void **)&spec,
 726                                  (const void **)&mask,
 727                                  &supp_mask,
 728                                  &rte_flow_item_udp_mask,
 729                                  sizeof(struct rte_flow_item_udp),
 730                                  error);
 731         if (rc != 0)
 732                 return rc;
 733
 734         /*
 735          * Filtering by UDP source and destination ports requires
 736          * the appropriate IP_PROTO in hardware filters
 737          */
 738         if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_IP_PROTO)) {
 739                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO;
 740                 efx_spec->efs_ip_proto = EFX_IPPROTO_UDP;
 741         } else if (efx_spec->efs_ip_proto != EFX_IPPROTO_UDP) {
 742                 rte_flow_error_set(error, EINVAL,
 743                         RTE_FLOW_ERROR_TYPE_ITEM, item,
 744                         "IP proto in pattern with UDP item should be appropriate");
 745                 return -rte_errno;
 746         }
 747
 748         if (spec == NULL)
 749                 return 0;
 750
 751         /*
 752          * Source and destination ports are in big-endian byte order in item and
 753          * in little-endian in efx_spec, so byte swap is used
 754          */
 755         if (mask->hdr.src_port == supp_mask.hdr.src_port) {
 756                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_PORT;
 757                 efx_spec->efs_rem_port = rte_bswap16(spec->hdr.src_port);
 758         } else if (mask->hdr.src_port != 0) {
 759                 goto fail_bad_mask;
 760         }
 761
 762         if (mask->hdr.dst_port == supp_mask.hdr.dst_port) {
 763                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_PORT;
 764                 efx_spec->efs_loc_port = rte_bswap16(spec->hdr.dst_port);
 765         } else if (mask->hdr.dst_port != 0) {
 766                 goto fail_bad_mask;
 767         }
 768
 769         return 0;
 770
 771 fail_bad_mask:
 772         rte_flow_error_set(error, EINVAL,
 773                            RTE_FLOW_ERROR_TYPE_ITEM, item,
 774                            "Bad mask in the UDP pattern item");
 775         return -rte_errno;
 776 }
 777
 778 /*
 779  * Filters for encapsulated packets match based on the EtherType and IP
 780  * protocol in the outer frame.
 781  */
 782 static int
 783 sfc_flow_set_match_flags_for_encap_pkts(const struct rte_flow_item *item,
 784                                         efx_filter_spec_t *efx_spec,
 785                                         uint8_t ip_proto,
 786                                         struct rte_flow_error *error)
 787 {
 788         if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_IP_PROTO)) {
 789                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO;
 790                 efx_spec->efs_ip_proto = ip_proto;
 791         } else if (efx_spec->efs_ip_proto != ip_proto) {
 792                 switch (ip_proto) {
 793                 case EFX_IPPROTO_UDP:
 794                         rte_flow_error_set(error, EINVAL,
 795                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 796                                 "Outer IP header protocol must be UDP "
 797                                 "in VxLAN/GENEVE pattern");
 798                         return -rte_errno;
 799
 800                 case EFX_IPPROTO_GRE:
 801                         rte_flow_error_set(error, EINVAL,
 802                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 803                                 "Outer IP header protocol must be GRE "
 804                                 "in NVGRE pattern");
 805                         return -rte_errno;
 806
 807                 default:
 808                         rte_flow_error_set(error, EINVAL,
 809                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 810                                 "Only VxLAN/GENEVE/NVGRE tunneling patterns "
 811                                 "are supported");
 812                         return -rte_errno;
 813                 }
 814         }
 815
 816         if (efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE &&
 817             efx_spec->efs_ether_type != EFX_ETHER_TYPE_IPV4 &&
 818             efx_spec->efs_ether_type != EFX_ETHER_TYPE_IPV6) {
 819                 rte_flow_error_set(error, EINVAL,
 820                         RTE_FLOW_ERROR_TYPE_ITEM, item,
 821                         "Outer frame EtherType in pattern with tunneling "
 822                         "must be IPv4 or IPv6");
 823                 return -rte_errno;
 824         }
 825
 826         return 0;
 827 }
 828
 829 static int
 830 sfc_flow_set_efx_spec_vni_or_vsid(efx_filter_spec_t *efx_spec,
 831                                   const uint8_t *vni_or_vsid_val,
 832                                   const uint8_t *vni_or_vsid_mask,
 833                                   const struct rte_flow_item *item,
 834                                   struct rte_flow_error *error)
 835 {
 836         const uint8_t vni_or_vsid_full_mask[EFX_VNI_OR_VSID_LEN] = {
 837                 0xff, 0xff, 0xff
 838         };
 839
 840         if (memcmp(vni_or_vsid_mask, vni_or_vsid_full_mask,
 841                    EFX_VNI_OR_VSID_LEN) == 0) {
 842                 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_VNI_OR_VSID;
 843                 rte_memcpy(efx_spec->efs_vni_or_vsid, vni_or_vsid_val,
 844                            EFX_VNI_OR_VSID_LEN);
 845         } else if (!sfc_flow_is_zero(vni_or_vsid_mask, EFX_VNI_OR_VSID_LEN)) {
 846                 rte_flow_error_set(error, EINVAL,
 847                                    RTE_FLOW_ERROR_TYPE_ITEM, item,
 848                                    "Unsupported VNI/VSID mask");
 849                 return -rte_errno;
 850         }
 851
 852         return 0;
 853 }
 854
 855 /**
 856  * Convert VXLAN item to EFX filter specification.
 857  *
 858  * @param item[in]
 859  *   Item specification. Only VXLAN network identifier field is supported.
 860  *   If the mask is NULL, default mask will be used.
 861  *   Ranging is not supported.
 862  * @param efx_spec[in, out]
 863  *   EFX filter specification to update.
 864  * @param[out] error
 865  *   Perform verbose error reporting if not NULL.
 866  */
 867 static int
 868 sfc_flow_parse_vxlan(const struct rte_flow_item *item,
 869                      efx_filter_spec_t *efx_spec,
 870                      struct rte_flow_error *error)
 871 {
 872         int rc;
 873         const struct rte_flow_item_vxlan *spec = NULL;
 874         const struct rte_flow_item_vxlan *mask = NULL;
 875         const struct rte_flow_item_vxlan supp_mask = {
 876                 .vni = { 0xff, 0xff, 0xff }
 877         };
 878
 879         rc = sfc_flow_parse_init(item,
 880                                  (const void **)&spec,
 881                                  (const void **)&mask,
 882                                  &supp_mask,
 883                                  &rte_flow_item_vxlan_mask,
 884                                  sizeof(struct rte_flow_item_vxlan),
 885                                  error);
 886         if (rc != 0)
 887                 return rc;
 888
 889         rc = sfc_flow_set_match_flags_for_encap_pkts(item, efx_spec,
 890                                                      EFX_IPPROTO_UDP, error);
 891         if (rc != 0)
 892                 return rc;
 893
 894         efx_spec->efs_encap_type = EFX_TUNNEL_PROTOCOL_VXLAN;
 895         efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ENCAP_TYPE;
 896
 897         if (spec == NULL)
 898                 return 0;
 899
 900         rc = sfc_flow_set_efx_spec_vni_or_vsid(efx_spec, spec->vni,
 901                                                mask->vni, item, error);
 902
 903         return rc;
 904 }
 905
 906 /**
 907  * Convert GENEVE item to EFX filter specification.
 908  *
 909  * @param item[in]
 910  *   Item specification. Only Virtual Network Identifier and protocol type
 911  *   fields are supported. But protocol type can be only Ethernet (0x6558).
 912  *   If the mask is NULL, default mask will be used.
 913  *   Ranging is not supported.
 914  * @param efx_spec[in, out]
 915  *   EFX filter specification to update.
 916  * @param[out] error
 917  *   Perform verbose error reporting if not NULL.
 918  */
 919 static int
 920 sfc_flow_parse_geneve(const struct rte_flow_item *item,
 921                       efx_filter_spec_t *efx_spec,
 922                       struct rte_flow_error *error)
 923 {
 924         int rc;
 925         const struct rte_flow_item_geneve *spec = NULL;
 926         const struct rte_flow_item_geneve *mask = NULL;
 927         const struct rte_flow_item_geneve supp_mask = {
 928                 .protocol = RTE_BE16(0xffff),
 929                 .vni = { 0xff, 0xff, 0xff }
 930         };
 931
 932         rc = sfc_flow_parse_init(item,
 933                                  (const void **)&spec,
 934                                  (const void **)&mask,
 935                                  &supp_mask,
 936                                  &rte_flow_item_geneve_mask,
 937                                  sizeof(struct rte_flow_item_geneve),
 938                                  error);
 939         if (rc != 0)
 940                 return rc;
 941
 942         rc = sfc_flow_set_match_flags_for_encap_pkts(item, efx_spec,
 943                                                      EFX_IPPROTO_UDP, error);
 944         if (rc != 0)
 945                 return rc;
 946
 947         efx_spec->efs_encap_type = EFX_TUNNEL_PROTOCOL_GENEVE;
 948         efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ENCAP_TYPE;
 949
 950         if (spec == NULL)
 951                 return 0;
 952
 953         if (mask->protocol == supp_mask.protocol) {
 954                 if (spec->protocol != rte_cpu_to_be_16(RTE_ETHER_TYPE_TEB)) {
 955                         rte_flow_error_set(error, EINVAL,
 956                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
 957                                 "GENEVE encap. protocol must be Ethernet "
 958                                 "(0x6558) in the GENEVE pattern item");
 959                         return -rte_errno;
 960                 }
 961         } else if (mask->protocol != 0) {
 962                 rte_flow_error_set(error, EINVAL,
 963                         RTE_FLOW_ERROR_TYPE_ITEM, item,
 964                         "Unsupported mask for GENEVE encap. protocol");
 965                 return -rte_errno;
 966         }
 967
 968         rc = sfc_flow_set_efx_spec_vni_or_vsid(efx_spec, spec->vni,
 969                                                mask->vni, item, error);
 970
 971         return rc;
 972 }
 973
 974 /**
 975  * Convert NVGRE item to EFX filter specification.
 976  *
 977  * @param item[in]
 978  *   Item specification. Only virtual subnet ID field is supported.
 979  *   If the mask is NULL, default mask will be used.
 980  *   Ranging is not supported.
 981  * @param efx_spec[in, out]
 982  *   EFX filter specification to update.
 983  * @param[out] error
 984  *   Perform verbose error reporting if not NULL.
 985  */
 986 static int
 987 sfc_flow_parse_nvgre(const struct rte_flow_item *item,
 988                      efx_filter_spec_t *efx_spec,
 989                      struct rte_flow_error *error)
 990 {
 991         int rc;
 992         const struct rte_flow_item_nvgre *spec = NULL;
 993         const struct rte_flow_item_nvgre *mask = NULL;
 994         const struct rte_flow_item_nvgre supp_mask = {
 995                 .tni = { 0xff, 0xff, 0xff }
 996         };
 997
 998         rc = sfc_flow_parse_init(item,
 999                                  (const void **)&spec,
1000                                  (const void **)&mask,
1001                                  &supp_mask,
1002                                  &rte_flow_item_nvgre_mask,
1003                                  sizeof(struct rte_flow_item_nvgre),
1004                                  error);
1005         if (rc != 0)
1006                 return rc;
1007
1008         rc = sfc_flow_set_match_flags_for_encap_pkts(item, efx_spec,
1009                                                      EFX_IPPROTO_GRE, error);
1010         if (rc != 0)
1011                 return rc;
1012
1013         efx_spec->efs_encap_type = EFX_TUNNEL_PROTOCOL_NVGRE;
1014         efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ENCAP_TYPE;
1015
1016         if (spec == NULL)
1017                 return 0;
1018
1019         rc = sfc_flow_set_efx_spec_vni_or_vsid(efx_spec, spec->tni,
1020                                                mask->tni, item, error);
1021
1022         return rc;
1023 }
1024
1025 static const struct sfc_flow_item sfc_flow_items[] = {
1026         {
1027                 .type = RTE_FLOW_ITEM_TYPE_VOID,
1028                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
1029                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
1030                 .parse = sfc_flow_parse_void,
1031         },
1032         {
1033                 .type = RTE_FLOW_ITEM_TYPE_ETH,
1034                 .prev_layer = SFC_FLOW_ITEM_START_LAYER,
1035                 .layer = SFC_FLOW_ITEM_L2,
1036                 .parse = sfc_flow_parse_eth,
1037         },
1038         {
1039                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
1040                 .prev_layer = SFC_FLOW_ITEM_L2,
1041                 .layer = SFC_FLOW_ITEM_L2,
1042                 .parse = sfc_flow_parse_vlan,
1043         },
1044         {
1045                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
1046                 .prev_layer = SFC_FLOW_ITEM_L2,
1047                 .layer = SFC_FLOW_ITEM_L3,
1048                 .parse = sfc_flow_parse_ipv4,
1049         },
1050         {
1051                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
1052                 .prev_layer = SFC_FLOW_ITEM_L2,
1053                 .layer = SFC_FLOW_ITEM_L3,
1054                 .parse = sfc_flow_parse_ipv6,
1055         },
1056         {
1057                 .type = RTE_FLOW_ITEM_TYPE_TCP,
1058                 .prev_layer = SFC_FLOW_ITEM_L3,
1059                 .layer = SFC_FLOW_ITEM_L4,
1060                 .parse = sfc_flow_parse_tcp,
1061         },
1062         {
1063                 .type = RTE_FLOW_ITEM_TYPE_UDP,
1064                 .prev_layer = SFC_FLOW_ITEM_L3,
1065                 .layer = SFC_FLOW_ITEM_L4,
1066                 .parse = sfc_flow_parse_udp,
1067         },
1068         {
1069                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
1070                 .prev_layer = SFC_FLOW_ITEM_L4,
1071                 .layer = SFC_FLOW_ITEM_START_LAYER,
1072                 .parse = sfc_flow_parse_vxlan,
1073         },
1074         {
1075                 .type = RTE_FLOW_ITEM_TYPE_GENEVE,
1076                 .prev_layer = SFC_FLOW_ITEM_L4,
1077                 .layer = SFC_FLOW_ITEM_START_LAYER,
1078                 .parse = sfc_flow_parse_geneve,
1079         },
1080         {
1081                 .type = RTE_FLOW_ITEM_TYPE_NVGRE,
1082                 .prev_layer = SFC_FLOW_ITEM_L3,
1083                 .layer = SFC_FLOW_ITEM_START_LAYER,
1084                 .parse = sfc_flow_parse_nvgre,
1085         },
1086 };
1087
1088 /*
1089  * Protocol-independent flow API support
1090  */
1091 static int
1092 sfc_flow_parse_attr(const struct rte_flow_attr *attr,
1093                     struct rte_flow *flow,
1094                     struct rte_flow_error *error)
1095 {
1096         if (attr == NULL) {
1097                 rte_flow_error_set(error, EINVAL,
1098                                    RTE_FLOW_ERROR_TYPE_ATTR, NULL,
1099                                    "NULL attribute");
1100                 return -rte_errno;
1101         }
1102         if (attr->group != 0) {
1103                 rte_flow_error_set(error, ENOTSUP,
1104                                    RTE_FLOW_ERROR_TYPE_ATTR_GROUP, attr,
1105                                    "Groups are not supported");
1106                 return -rte_errno;
1107         }
1108         if (attr->priority != 0) {
1109                 rte_flow_error_set(error, ENOTSUP,
1110                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, attr,
1111                                    "Priorities are not supported");
1112                 return -rte_errno;
1113         }
1114         if (attr->egress != 0) {
1115                 rte_flow_error_set(error, ENOTSUP,
1116                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, attr,
1117                                    "Egress is not supported");
1118                 return -rte_errno;
1119         }
1120         if (attr->transfer != 0) {
1121                 rte_flow_error_set(error, ENOTSUP,
1122                                    RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER, attr,
1123                                    "Transfer is not supported");
1124                 return -rte_errno;
1125         }
1126         if (attr->ingress == 0) {
1127                 rte_flow_error_set(error, ENOTSUP,
1128                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, attr,
1129                                    "Only ingress is supported");
1130                 return -rte_errno;
1131         }
1132
1133         flow->spec.template.efs_flags |= EFX_FILTER_FLAG_RX;
1134         flow->spec.template.efs_rss_context = EFX_RSS_CONTEXT_DEFAULT;
1135
1136         return 0;
1137 }
1138
1139 /* Get item from array sfc_flow_items */
1140 static const struct sfc_flow_item *
1141 sfc_flow_get_item(enum rte_flow_item_type type)
1142 {
1143         unsigned int i;
1144
1145         for (i = 0; i < RTE_DIM(sfc_flow_items); i++)
1146                 if (sfc_flow_items[i].type == type)
1147                         return &sfc_flow_items[i];
1148
1149         return NULL;
1150 }
1151
1152 static int
1153 sfc_flow_parse_pattern(const struct rte_flow_item pattern[],
1154                        struct rte_flow *flow,
1155                        struct rte_flow_error *error)
1156 {
1157         int rc;
1158         unsigned int prev_layer = SFC_FLOW_ITEM_ANY_LAYER;
1159         boolean_t is_ifrm = B_FALSE;
1160         const struct sfc_flow_item *item;
1161
1162         if (pattern == NULL) {
1163                 rte_flow_error_set(error, EINVAL,
1164                                    RTE_FLOW_ERROR_TYPE_ITEM_NUM, NULL,
1165                                    "NULL pattern");
1166                 return -rte_errno;
1167         }
1168
1169         for (; pattern->type != RTE_FLOW_ITEM_TYPE_END; pattern++) {
1170                 item = sfc_flow_get_item(pattern->type);
1171                 if (item == NULL) {
1172                         rte_flow_error_set(error, ENOTSUP,
1173                                            RTE_FLOW_ERROR_TYPE_ITEM, pattern,
1174                                            "Unsupported pattern item");
1175                         return -rte_errno;
1176                 }
1177
1178                 /*
1179                  * Omitting one or several protocol layers at the beginning
1180                  * of pattern is supported
1181                  */
1182                 if (item->prev_layer != SFC_FLOW_ITEM_ANY_LAYER &&
1183                     prev_layer != SFC_FLOW_ITEM_ANY_LAYER &&
1184                     item->prev_layer != prev_layer) {
1185                         rte_flow_error_set(error, ENOTSUP,
1186                                            RTE_FLOW_ERROR_TYPE_ITEM, pattern,
1187                                            "Unexpected sequence of pattern items");
1188                         return -rte_errno;
1189                 }
1190
1191                 /*
1192                  * Allow only VOID and ETH pattern items in the inner frame.
1193                  * Also check that there is only one tunneling protocol.
1194                  */
1195                 switch (item->type) {
1196                 case RTE_FLOW_ITEM_TYPE_VOID:
1197                 case RTE_FLOW_ITEM_TYPE_ETH:
1198                         break;
1199
1200                 case RTE_FLOW_ITEM_TYPE_VXLAN:
1201                 case RTE_FLOW_ITEM_TYPE_GENEVE:
1202                 case RTE_FLOW_ITEM_TYPE_NVGRE:
1203                         if (is_ifrm) {
1204                                 rte_flow_error_set(error, EINVAL,
1205                                         RTE_FLOW_ERROR_TYPE_ITEM,
1206                                         pattern,
1207                                         "More than one tunneling protocol");
1208                                 return -rte_errno;
1209                         }
1210                         is_ifrm = B_TRUE;
1211                         break;
1212
1213                 default:
1214                         if (is_ifrm) {
1215                                 rte_flow_error_set(error, EINVAL,
1216                                         RTE_FLOW_ERROR_TYPE_ITEM,
1217                                         pattern,
1218                                         "There is an unsupported pattern item "
1219                                         "in the inner frame");
1220                                 return -rte_errno;
1221                         }
1222                         break;
1223                 }
1224
1225                 rc = item->parse(pattern, &flow->spec.template, error);
1226                 if (rc != 0)
1227                         return rc;
1228
1229                 if (item->layer != SFC_FLOW_ITEM_ANY_LAYER)
1230                         prev_layer = item->layer;
1231         }
1232
1233         return 0;
1234 }
1235
1236 static int
1237 sfc_flow_parse_queue(struct sfc_adapter *sa,
1238                      const struct rte_flow_action_queue *queue,
1239                      struct rte_flow *flow)
1240 {
1241         struct sfc_rxq *rxq;
1242
1243         if (queue->index >= sfc_sa2shared(sa)->rxq_count)
1244                 return -EINVAL;
1245
1246         rxq = &sa->rxq_ctrl[queue->index];
1247         flow->spec.template.efs_dmaq_id = (uint16_t)rxq->hw_index;
1248
1249         return 0;
1250 }
1251
1252 static int
1253 sfc_flow_parse_rss(struct sfc_adapter *sa,
1254                    const struct rte_flow_action_rss *action_rss,
1255                    struct rte_flow *flow)
1256 {
1257         struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1258         struct sfc_rss *rss = &sas->rss;
1259         unsigned int rxq_sw_index;
1260         struct sfc_rxq *rxq;
1261         unsigned int rxq_hw_index_min;
1262         unsigned int rxq_hw_index_max;
1263         efx_rx_hash_type_t efx_hash_types;
1264         const uint8_t *rss_key;
1265         struct sfc_flow_rss *sfc_rss_conf = &flow->rss_conf;
1266         unsigned int i;
1267
1268         if (action_rss->queue_num == 0)
1269                 return -EINVAL;
1270
1271         rxq_sw_index = sfc_sa2shared(sa)->rxq_count - 1;
1272         rxq = &sa->rxq_ctrl[rxq_sw_index];
1273         rxq_hw_index_min = rxq->hw_index;
1274         rxq_hw_index_max = 0;
1275
1276         for (i = 0; i < action_rss->queue_num; ++i) {
1277                 rxq_sw_index = action_rss->queue[i];
1278
1279                 if (rxq_sw_index >= sfc_sa2shared(sa)->rxq_count)
1280                         return -EINVAL;
1281
1282                 rxq = &sa->rxq_ctrl[rxq_sw_index];
1283
1284                 if (rxq->hw_index < rxq_hw_index_min)
1285                         rxq_hw_index_min = rxq->hw_index;
1286
1287                 if (rxq->hw_index > rxq_hw_index_max)
1288                         rxq_hw_index_max = rxq->hw_index;
1289         }
1290
1291         switch (action_rss->func) {
1292         case RTE_ETH_HASH_FUNCTION_DEFAULT:
1293         case RTE_ETH_HASH_FUNCTION_TOEPLITZ:
1294                 break;
1295         default:
1296                 return -EINVAL;
1297         }
1298
1299         if (action_rss->level)
1300                 return -EINVAL;
1301
1302         /*
1303          * Dummy RSS action with only one queue and no specific settings
1304          * for hash types and key does not require dedicated RSS context
1305          * and may be simplified to single queue action.
1306          */
1307         if (action_rss->queue_num == 1 && action_rss->types == 0 &&
1308             action_rss->key_len == 0) {
1309                 flow->spec.template.efs_dmaq_id = rxq_hw_index_min;
1310                 return 0;
1311         }
1312
1313         if (action_rss->types) {
1314                 int rc;
1315
1316                 rc = sfc_rx_hf_rte_to_efx(sa, action_rss->types,
1317                                           &efx_hash_types);
1318                 if (rc != 0)
1319                         return -rc;
1320         } else {
1321                 unsigned int i;
1322
1323                 efx_hash_types = 0;
1324                 for (i = 0; i < rss->hf_map_nb_entries; ++i)
1325                         efx_hash_types |= rss->hf_map[i].efx;
1326         }
1327
1328         if (action_rss->key_len) {
1329                 if (action_rss->key_len != sizeof(rss->key))
1330                         return -EINVAL;
1331
1332                 rss_key = action_rss->key;
1333         } else {
1334                 rss_key = rss->key;
1335         }
1336
1337         flow->rss = B_TRUE;
1338
1339         sfc_rss_conf->rxq_hw_index_min = rxq_hw_index_min;
1340         sfc_rss_conf->rxq_hw_index_max = rxq_hw_index_max;
1341         sfc_rss_conf->rss_hash_types = efx_hash_types;
1342         rte_memcpy(sfc_rss_conf->rss_key, rss_key, sizeof(rss->key));
1343
1344         for (i = 0; i < RTE_DIM(sfc_rss_conf->rss_tbl); ++i) {
1345                 unsigned int nb_queues = action_rss->queue_num;
1346                 unsigned int rxq_sw_index = action_rss->queue[i % nb_queues];
1347                 struct sfc_rxq *rxq = &sa->rxq_ctrl[rxq_sw_index];
1348
1349                 sfc_rss_conf->rss_tbl[i] = rxq->hw_index - rxq_hw_index_min;
1350         }
1351
1352         return 0;
1353 }
1354
1355 static int
1356 sfc_flow_spec_flush(struct sfc_adapter *sa, struct sfc_flow_spec *spec,
1357                     unsigned int filters_count)
1358 {
1359         unsigned int i;
1360         int ret = 0;
1361
1362         for (i = 0; i < filters_count; i++) {
1363                 int rc;
1364
1365                 rc = efx_filter_remove(sa->nic, &spec->filters[i]);
1366                 if (ret == 0 && rc != 0) {
1367                         sfc_err(sa, "failed to remove filter specification "
1368                                 "(rc = %d)", rc);
1369                         ret = rc;
1370                 }
1371         }
1372
1373         return ret;
1374 }
1375
1376 static int
1377 sfc_flow_spec_insert(struct sfc_adapter *sa, struct sfc_flow_spec *spec)
1378 {
1379         unsigned int i;
1380         int rc = 0;
1381
1382         for (i = 0; i < spec->count; i++) {
1383                 rc = efx_filter_insert(sa->nic, &spec->filters[i]);
1384                 if (rc != 0) {
1385                         sfc_flow_spec_flush(sa, spec, i);
1386                         break;
1387                 }
1388         }
1389
1390         return rc;
1391 }
1392
1393 static int
1394 sfc_flow_spec_remove(struct sfc_adapter *sa, struct sfc_flow_spec *spec)
1395 {
1396         return sfc_flow_spec_flush(sa, spec, spec->count);
1397 }
1398
1399 static int
1400 sfc_flow_filter_insert(struct sfc_adapter *sa,
1401                        struct rte_flow *flow)
1402 {
1403         struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
1404         struct sfc_rss *rss = &sas->rss;
1405         struct sfc_flow_rss *flow_rss = &flow->rss_conf;
1406         uint32_t efs_rss_context = EFX_RSS_CONTEXT_DEFAULT;
1407         unsigned int i;
1408         int rc = 0;
1409
1410         if (flow->rss) {
1411                 unsigned int rss_spread = MIN(flow_rss->rxq_hw_index_max -
1412                                               flow_rss->rxq_hw_index_min + 1,
1413                                               EFX_MAXRSS);
1414
1415                 rc = efx_rx_scale_context_alloc(sa->nic,
1416                                                 EFX_RX_SCALE_EXCLUSIVE,
1417                                                 rss_spread,
1418                                                 &efs_rss_context);
1419                 if (rc != 0)
1420                         goto fail_scale_context_alloc;
1421
1422                 rc = efx_rx_scale_mode_set(sa->nic, efs_rss_context,
1423                                            rss->hash_alg,
1424                                            flow_rss->rss_hash_types, B_TRUE);
1425                 if (rc != 0)
1426                         goto fail_scale_mode_set;
1427
1428                 rc = efx_rx_scale_key_set(sa->nic, efs_rss_context,
1429                                           flow_rss->rss_key,
1430                                           sizeof(rss->key));
1431                 if (rc != 0)
1432                         goto fail_scale_key_set;
1433
1434                 /*
1435                  * At this point, fully elaborated filter specifications
1436                  * have been produced from the template. To make sure that
1437                  * RSS behaviour is consistent between them, set the same
1438                  * RSS context value everywhere.
1439                  */
1440                 for (i = 0; i < flow->spec.count; i++) {
1441                         efx_filter_spec_t *spec = &flow->spec.filters[i];
1442
1443                         spec->efs_rss_context = efs_rss_context;
1444                         spec->efs_dmaq_id = flow_rss->rxq_hw_index_min;
1445                         spec->efs_flags |= EFX_FILTER_FLAG_RX_RSS;
1446                 }
1447         }
1448
1449         rc = sfc_flow_spec_insert(sa, &flow->spec);
1450         if (rc != 0)
1451                 goto fail_filter_insert;
1452
1453         if (flow->rss) {
1454                 /*
1455                  * Scale table is set after filter insertion because
1456                  * the table entries are relative to the base RxQ ID
1457                  * and the latter is submitted to the HW by means of
1458                  * inserting a filter, so by the time of the request
1459                  * the HW knows all the information needed to verify
1460                  * the table entries, and the operation will succeed
1461                  */
1462                 rc = efx_rx_scale_tbl_set(sa->nic, efs_rss_context,
1463                                           flow_rss->rss_tbl,
1464                                           RTE_DIM(flow_rss->rss_tbl));
1465                 if (rc != 0)
1466                         goto fail_scale_tbl_set;
1467         }
1468
1469         return 0;
1470
1471 fail_scale_tbl_set:
1472         sfc_flow_spec_remove(sa, &flow->spec);
1473
1474 fail_filter_insert:
1475 fail_scale_key_set:
1476 fail_scale_mode_set:
1477         if (efs_rss_context != EFX_RSS_CONTEXT_DEFAULT)
1478                 efx_rx_scale_context_free(sa->nic, efs_rss_context);
1479
1480 fail_scale_context_alloc:
1481         return rc;
1482 }
1483
1484 static int
1485 sfc_flow_filter_remove(struct sfc_adapter *sa,
1486                        struct rte_flow *flow)
1487 {
1488         int rc = 0;
1489
1490         rc = sfc_flow_spec_remove(sa, &flow->spec);
1491         if (rc != 0)
1492                 return rc;
1493
1494         if (flow->rss) {
1495                 /*
1496                  * All specifications for a given flow rule have the same RSS
1497                  * context, so that RSS context value is taken from the first
1498                  * filter specification
1499                  */
1500                 efx_filter_spec_t *spec = &flow->spec.filters[0];
1501
1502                 rc = efx_rx_scale_context_free(sa->nic, spec->efs_rss_context);
1503         }
1504
1505         return rc;
1506 }
1507
1508 static int
1509 sfc_flow_parse_mark(struct sfc_adapter *sa,
1510                     const struct rte_flow_action_mark *mark,
1511                     struct rte_flow *flow)
1512 {
1513         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
1514
1515         if (mark == NULL || mark->id > encp->enc_filter_action_mark_max)
1516                 return EINVAL;
1517
1518         flow->spec.template.efs_flags |= EFX_FILTER_FLAG_ACTION_MARK;
1519         flow->spec.template.efs_mark = mark->id;
1520
1521         return 0;
1522 }
1523
1524 static int
1525 sfc_flow_parse_actions(struct sfc_adapter *sa,
1526                        const struct rte_flow_action actions[],
1527                        struct rte_flow *flow,
1528                        struct rte_flow_error *error)
1529 {
1530         int rc;
1531         const unsigned int dp_rx_features = sa->priv.dp_rx->features;
1532         uint32_t actions_set = 0;
1533         const uint32_t fate_actions_mask = (1UL << RTE_FLOW_ACTION_TYPE_QUEUE) |
1534                                            (1UL << RTE_FLOW_ACTION_TYPE_RSS) |
1535                                            (1UL << RTE_FLOW_ACTION_TYPE_DROP);
1536         const uint32_t mark_actions_mask = (1UL << RTE_FLOW_ACTION_TYPE_MARK) |
1537                                            (1UL << RTE_FLOW_ACTION_TYPE_FLAG);
1538
1539         if (actions == NULL) {
1540                 rte_flow_error_set(error, EINVAL,
1541                                    RTE_FLOW_ERROR_TYPE_ACTION_NUM, NULL,
1542                                    "NULL actions");
1543                 return -rte_errno;
1544         }
1545
1546 #define SFC_BUILD_SET_OVERFLOW(_action, _set) \
1547         RTE_BUILD_BUG_ON(_action >= sizeof(_set) * CHAR_BIT)
1548
1549         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1550                 switch (actions->type) {
1551                 case RTE_FLOW_ACTION_TYPE_VOID:
1552                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VOID,
1553                                                actions_set);
1554                         break;
1555
1556                 case RTE_FLOW_ACTION_TYPE_QUEUE:
1557                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_QUEUE,
1558                                                actions_set);
1559                         if ((actions_set & fate_actions_mask) != 0)
1560                                 goto fail_fate_actions;
1561
1562                         rc = sfc_flow_parse_queue(sa, actions->conf, flow);
1563                         if (rc != 0) {
1564                                 rte_flow_error_set(error, EINVAL,
1565                                         RTE_FLOW_ERROR_TYPE_ACTION, actions,
1566                                         "Bad QUEUE action");
1567                                 return -rte_errno;
1568                         }
1569                         break;
1570
1571                 case RTE_FLOW_ACTION_TYPE_RSS:
1572                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_RSS,
1573                                                actions_set);
1574                         if ((actions_set & fate_actions_mask) != 0)
1575                                 goto fail_fate_actions;
1576
1577                         rc = sfc_flow_parse_rss(sa, actions->conf, flow);
1578                         if (rc != 0) {
1579                                 rte_flow_error_set(error, -rc,
1580                                         RTE_FLOW_ERROR_TYPE_ACTION, actions,
1581                                         "Bad RSS action");
1582                                 return -rte_errno;
1583                         }
1584                         break;
1585
1586                 case RTE_FLOW_ACTION_TYPE_DROP:
1587                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_DROP,
1588                                                actions_set);
1589                         if ((actions_set & fate_actions_mask) != 0)
1590                                 goto fail_fate_actions;
1591
1592                         flow->spec.template.efs_dmaq_id =
1593                                 EFX_FILTER_SPEC_RX_DMAQ_ID_DROP;
1594                         break;
1595
1596                 case RTE_FLOW_ACTION_TYPE_FLAG:
1597                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_FLAG,
1598                                                actions_set);
1599                         if ((actions_set & mark_actions_mask) != 0)
1600                                 goto fail_actions_overlap;
1601
1602                         if ((dp_rx_features & SFC_DP_RX_FEAT_FLOW_FLAG) == 0) {
1603                                 rte_flow_error_set(error, ENOTSUP,
1604                                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1605                                         "FLAG action is not supported on the current Rx datapath");
1606                                 return -rte_errno;
1607                         }
1608
1609                         flow->spec.template.efs_flags |=
1610                                 EFX_FILTER_FLAG_ACTION_FLAG;
1611                         break;
1612
1613                 case RTE_FLOW_ACTION_TYPE_MARK:
1614                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_MARK,
1615                                                actions_set);
1616                         if ((actions_set & mark_actions_mask) != 0)
1617                                 goto fail_actions_overlap;
1618
1619                         if ((dp_rx_features & SFC_DP_RX_FEAT_FLOW_MARK) == 0) {
1620                                 rte_flow_error_set(error, ENOTSUP,
1621                                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1622                                         "MARK action is not supported on the current Rx datapath");
1623                                 return -rte_errno;
1624                         }
1625
1626                         rc = sfc_flow_parse_mark(sa, actions->conf, flow);
1627                         if (rc != 0) {
1628                                 rte_flow_error_set(error, rc,
1629                                         RTE_FLOW_ERROR_TYPE_ACTION, actions,
1630                                         "Bad MARK action");
1631                                 return -rte_errno;
1632                         }
1633                         break;
1634
1635                 default:
1636                         rte_flow_error_set(error, ENOTSUP,
1637                                            RTE_FLOW_ERROR_TYPE_ACTION, actions,
1638                                            "Action is not supported");
1639                         return -rte_errno;
1640                 }
1641
1642                 actions_set |= (1UL << actions->type);
1643         }
1644 #undef SFC_BUILD_SET_OVERFLOW
1645
1646         /* When fate is unknown, drop traffic. */
1647         if ((actions_set & fate_actions_mask) == 0) {
1648                 flow->spec.template.efs_dmaq_id =
1649                         EFX_FILTER_SPEC_RX_DMAQ_ID_DROP;
1650         }
1651
1652         return 0;
1653
1654 fail_fate_actions:
1655         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, actions,
1656                            "Cannot combine several fate-deciding actions, "
1657                            "choose between QUEUE, RSS or DROP");
1658         return -rte_errno;
1659
1660 fail_actions_overlap:
1661         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, actions,
1662                            "Overlapping actions are not supported");
1663         return -rte_errno;
1664 }
1665
1666 /**
1667  * Set the EFX_FILTER_MATCH_UNKNOWN_UCAST_DST
1668  * and EFX_FILTER_MATCH_UNKNOWN_MCAST_DST match flags in the same
1669  * specifications after copying.
1670  *
1671  * @param spec[in, out]
1672  *   SFC flow specification to update.
1673  * @param filters_count_for_one_val[in]
1674  *   How many specifications should have the same match flag, what is the
1675  *   number of specifications before copying.
1676  * @param error[out]
1677  *   Perform verbose error reporting if not NULL.
1678  */
1679 static int
1680 sfc_flow_set_unknown_dst_flags(struct sfc_flow_spec *spec,
1681                                unsigned int filters_count_for_one_val,
1682                                struct rte_flow_error *error)
1683 {
1684         unsigned int i;
1685         static const efx_filter_match_flags_t vals[] = {
1686                 EFX_FILTER_MATCH_UNKNOWN_UCAST_DST,
1687                 EFX_FILTER_MATCH_UNKNOWN_MCAST_DST
1688         };
1689
1690         if (filters_count_for_one_val * RTE_DIM(vals) != spec->count) {
1691                 rte_flow_error_set(error, EINVAL,
1692                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
1693                         "Number of specifications is incorrect while copying "
1694                         "by unknown destination flags");
1695                 return -rte_errno;
1696         }
1697
1698         for (i = 0; i < spec->count; i++) {
1699                 /* The check above ensures that divisor can't be zero here */
1700                 spec->filters[i].efs_match_flags |=
1701                         vals[i / filters_count_for_one_val];
1702         }
1703
1704         return 0;
1705 }
1706
1707 /**
1708  * Check that the following conditions are met:
1709  * - the list of supported filters has a filter
1710  *   with EFX_FILTER_MATCH_UNKNOWN_MCAST_DST flag instead of
1711  *   EFX_FILTER_MATCH_UNKNOWN_UCAST_DST, since this filter will also
1712  *   be inserted.
1713  *
1714  * @param match[in]
1715  *   The match flags of filter.
1716  * @param spec[in]
1717  *   Specification to be supplemented.
1718  * @param filter[in]
1719  *   SFC filter with list of supported filters.
1720  */
1721 static boolean_t
1722 sfc_flow_check_unknown_dst_flags(efx_filter_match_flags_t match,
1723                                  __rte_unused efx_filter_spec_t *spec,
1724                                  struct sfc_filter *filter)
1725 {
1726         unsigned int i;
1727         efx_filter_match_flags_t match_mcast_dst;
1728
1729         match_mcast_dst =
1730                 (match & ~EFX_FILTER_MATCH_UNKNOWN_UCAST_DST) |
1731                 EFX_FILTER_MATCH_UNKNOWN_MCAST_DST;
1732         for (i = 0; i < filter->supported_match_num; i++) {
1733                 if (match_mcast_dst == filter->supported_match[i])
1734                         return B_TRUE;
1735         }
1736
1737         return B_FALSE;
1738 }
1739
1740 /**
1741  * Set the EFX_FILTER_MATCH_ETHER_TYPE match flag and EFX_ETHER_TYPE_IPV4 and
1742  * EFX_ETHER_TYPE_IPV6 values of the corresponding field in the same
1743  * specifications after copying.
1744  *
1745  * @param spec[in, out]
1746  *   SFC flow specification to update.
1747  * @param filters_count_for_one_val[in]
1748  *   How many specifications should have the same EtherType value, what is the
1749  *   number of specifications before copying.
1750  * @param error[out]
1751  *   Perform verbose error reporting if not NULL.
1752  */
1753 static int
1754 sfc_flow_set_ethertypes(struct sfc_flow_spec *spec,
1755                         unsigned int filters_count_for_one_val,
1756                         struct rte_flow_error *error)
1757 {
1758         unsigned int i;
1759         static const uint16_t vals[] = {
1760                 EFX_ETHER_TYPE_IPV4, EFX_ETHER_TYPE_IPV6
1761         };
1762
1763         if (filters_count_for_one_val * RTE_DIM(vals) != spec->count) {
1764                 rte_flow_error_set(error, EINVAL,
1765                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
1766                         "Number of specifications is incorrect "
1767                         "while copying by Ethertype");
1768                 return -rte_errno;
1769         }
1770
1771         for (i = 0; i < spec->count; i++) {
1772                 spec->filters[i].efs_match_flags |=
1773                         EFX_FILTER_MATCH_ETHER_TYPE;
1774
1775                 /*
1776                  * The check above ensures that
1777                  * filters_count_for_one_val is not 0
1778                  */
1779                 spec->filters[i].efs_ether_type =
1780                         vals[i / filters_count_for_one_val];
1781         }
1782
1783         return 0;
1784 }
1785
1786 /**
1787  * Set the EFX_FILTER_MATCH_OUTER_VID match flag with value 0
1788  * in the same specifications after copying.
1789  *
1790  * @param spec[in, out]
1791  *   SFC flow specification to update.
1792  * @param filters_count_for_one_val[in]
1793  *   How many specifications should have the same match flag, what is the
1794  *   number of specifications before copying.
1795  * @param error[out]
1796  *   Perform verbose error reporting if not NULL.
1797  */
1798 static int
1799 sfc_flow_set_outer_vid_flag(struct sfc_flow_spec *spec,
1800                             unsigned int filters_count_for_one_val,
1801                             struct rte_flow_error *error)
1802 {
1803         unsigned int i;
1804
1805         if (filters_count_for_one_val != spec->count) {
1806                 rte_flow_error_set(error, EINVAL,
1807                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
1808                         "Number of specifications is incorrect "
1809                         "while copying by outer VLAN ID");
1810                 return -rte_errno;
1811         }
1812
1813         for (i = 0; i < spec->count; i++) {
1814                 spec->filters[i].efs_match_flags |=
1815                         EFX_FILTER_MATCH_OUTER_VID;
1816
1817                 spec->filters[i].efs_outer_vid = 0;
1818         }
1819
1820         return 0;
1821 }
1822
1823 /**
1824  * Set the EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST and
1825  * EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST match flags in the same
1826  * specifications after copying.
1827  *
1828  * @param spec[in, out]
1829  *   SFC flow specification to update.
1830  * @param filters_count_for_one_val[in]
1831  *   How many specifications should have the same match flag, what is the
1832  *   number of specifications before copying.
1833  * @param error[out]
1834  *   Perform verbose error reporting if not NULL.
1835  */
1836 static int
1837 sfc_flow_set_ifrm_unknown_dst_flags(struct sfc_flow_spec *spec,
1838                                     unsigned int filters_count_for_one_val,
1839                                     struct rte_flow_error *error)
1840 {
1841         unsigned int i;
1842         static const efx_filter_match_flags_t vals[] = {
1843                 EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST,
1844                 EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST
1845         };
1846
1847         if (filters_count_for_one_val * RTE_DIM(vals) != spec->count) {
1848                 rte_flow_error_set(error, EINVAL,
1849                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
1850                         "Number of specifications is incorrect while copying "
1851                         "by inner frame unknown destination flags");
1852                 return -rte_errno;
1853         }
1854
1855         for (i = 0; i < spec->count; i++) {
1856                 /* The check above ensures that divisor can't be zero here */
1857                 spec->filters[i].efs_match_flags |=
1858                         vals[i / filters_count_for_one_val];
1859         }
1860
1861         return 0;
1862 }
1863
1864 /**
1865  * Check that the following conditions are met:
1866  * - the specification corresponds to a filter for encapsulated traffic
1867  * - the list of supported filters has a filter
1868  *   with EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST flag instead of
1869  *   EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST, since this filter will also
1870  *   be inserted.
1871  *
1872  * @param match[in]
1873  *   The match flags of filter.
1874  * @param spec[in]
1875  *   Specification to be supplemented.
1876  * @param filter[in]
1877  *   SFC filter with list of supported filters.
1878  */
1879 static boolean_t
1880 sfc_flow_check_ifrm_unknown_dst_flags(efx_filter_match_flags_t match,
1881                                       efx_filter_spec_t *spec,
1882                                       struct sfc_filter *filter)
1883 {
1884         unsigned int i;
1885         efx_tunnel_protocol_t encap_type = spec->efs_encap_type;
1886         efx_filter_match_flags_t match_mcast_dst;
1887
1888         if (encap_type == EFX_TUNNEL_PROTOCOL_NONE)
1889                 return B_FALSE;
1890
1891         match_mcast_dst =
1892                 (match & ~EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST) |
1893                 EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST;
1894         for (i = 0; i < filter->supported_match_num; i++) {
1895                 if (match_mcast_dst == filter->supported_match[i])
1896                         return B_TRUE;
1897         }
1898
1899         return B_FALSE;
1900 }
1901
1902 /**
1903  * Check that the list of supported filters has a filter that differs
1904  * from @p match in that it has no flag EFX_FILTER_MATCH_OUTER_VID
1905  * in this case that filter will be used and the flag
1906  * EFX_FILTER_MATCH_OUTER_VID is not needed.
1907  *
1908  * @param match[in]
1909  *   The match flags of filter.
1910  * @param spec[in]
1911  *   Specification to be supplemented.
1912  * @param filter[in]
1913  *   SFC filter with list of supported filters.
1914  */
1915 static boolean_t
1916 sfc_flow_check_outer_vid_flag(efx_filter_match_flags_t match,
1917                               __rte_unused efx_filter_spec_t *spec,
1918                               struct sfc_filter *filter)
1919 {
1920         unsigned int i;
1921         efx_filter_match_flags_t match_without_vid =
1922                 match & ~EFX_FILTER_MATCH_OUTER_VID;
1923
1924         for (i = 0; i < filter->supported_match_num; i++) {
1925                 if (match_without_vid == filter->supported_match[i])
1926                         return B_FALSE;
1927         }
1928
1929         return B_TRUE;
1930 }
1931
1932 /*
1933  * Match flags that can be automatically added to filters.
1934  * Selecting the last minimum when searching for the copy flag ensures that the
1935  * EFX_FILTER_MATCH_UNKNOWN_UCAST_DST flag has a higher priority than
1936  * EFX_FILTER_MATCH_ETHER_TYPE. This is because the filter
1937  * EFX_FILTER_MATCH_UNKNOWN_UCAST_DST is at the end of the list of supported
1938  * filters.
1939  */
1940 static const struct sfc_flow_copy_flag sfc_flow_copy_flags[] = {
1941         {
1942                 .flag = EFX_FILTER_MATCH_UNKNOWN_UCAST_DST,
1943                 .vals_count = 2,
1944                 .set_vals = sfc_flow_set_unknown_dst_flags,
1945                 .spec_check = sfc_flow_check_unknown_dst_flags,
1946         },
1947         {
1948                 .flag = EFX_FILTER_MATCH_ETHER_TYPE,
1949                 .vals_count = 2,
1950                 .set_vals = sfc_flow_set_ethertypes,
1951                 .spec_check = NULL,
1952         },
1953         {
1954                 .flag = EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST,
1955                 .vals_count = 2,
1956                 .set_vals = sfc_flow_set_ifrm_unknown_dst_flags,
1957                 .spec_check = sfc_flow_check_ifrm_unknown_dst_flags,
1958         },
1959         {
1960                 .flag = EFX_FILTER_MATCH_OUTER_VID,
1961                 .vals_count = 1,
1962                 .set_vals = sfc_flow_set_outer_vid_flag,
1963                 .spec_check = sfc_flow_check_outer_vid_flag,
1964         },
1965 };
1966
1967 /* Get item from array sfc_flow_copy_flags */
1968 static const struct sfc_flow_copy_flag *
1969 sfc_flow_get_copy_flag(efx_filter_match_flags_t flag)
1970 {
1971         unsigned int i;
1972
1973         for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) {
1974                 if (sfc_flow_copy_flags[i].flag == flag)
1975                         return &sfc_flow_copy_flags[i];
1976         }
1977
1978         return NULL;
1979 }
1980
1981 /**
1982  * Make copies of the specifications, set match flag and values
1983  * of the field that corresponds to it.
1984  *
1985  * @param spec[in, out]
1986  *   SFC flow specification to update.
1987  * @param flag[in]
1988  *   The match flag to add.
1989  * @param error[out]
1990  *   Perform verbose error reporting if not NULL.
1991  */
1992 static int
1993 sfc_flow_spec_add_match_flag(struct sfc_flow_spec *spec,
1994                              efx_filter_match_flags_t flag,
1995                              struct rte_flow_error *error)
1996 {
1997         unsigned int i;
1998         unsigned int new_filters_count;
1999         unsigned int filters_count_for_one_val;
2000         const struct sfc_flow_copy_flag *copy_flag;
2001         int rc;
2002
2003         copy_flag = sfc_flow_get_copy_flag(flag);
2004         if (copy_flag == NULL) {
2005                 rte_flow_error_set(error, ENOTSUP,
2006                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2007                                    "Unsupported spec field for copying");
2008                 return -rte_errno;
2009         }
2010
2011         new_filters_count = spec->count * copy_flag->vals_count;
2012         if (new_filters_count > SF_FLOW_SPEC_NB_FILTERS_MAX) {
2013                 rte_flow_error_set(error, EINVAL,
2014                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2015                         "Too much EFX specifications in the flow rule");
2016                 return -rte_errno;
2017         }
2018
2019         /* Copy filters specifications */
2020         for (i = spec->count; i < new_filters_count; i++)
2021                 spec->filters[i] = spec->filters[i - spec->count];
2022
2023         filters_count_for_one_val = spec->count;
2024         spec->count = new_filters_count;
2025
2026         rc = copy_flag->set_vals(spec, filters_count_for_one_val, error);
2027         if (rc != 0)
2028                 return rc;
2029
2030         return 0;
2031 }
2032
2033 /**
2034  * Check that the given set of match flags missing in the original filter spec
2035  * could be covered by adding spec copies which specify the corresponding
2036  * flags and packet field values to match.
2037  *
2038  * @param miss_flags[in]
2039  *   Flags that are missing until the supported filter.
2040  * @param spec[in]
2041  *   Specification to be supplemented.
2042  * @param filter[in]
2043  *   SFC filter.
2044  *
2045  * @return
2046  *   Number of specifications after copy or 0, if the flags can not be added.
2047  */
2048 static unsigned int
2049 sfc_flow_check_missing_flags(efx_filter_match_flags_t miss_flags,
2050                              efx_filter_spec_t *spec,
2051                              struct sfc_filter *filter)
2052 {
2053         unsigned int i;
2054         efx_filter_match_flags_t copy_flags = 0;
2055         efx_filter_match_flags_t flag;
2056         efx_filter_match_flags_t match = spec->efs_match_flags | miss_flags;
2057         sfc_flow_spec_check *check;
2058         unsigned int multiplier = 1;
2059
2060         for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) {
2061                 flag = sfc_flow_copy_flags[i].flag;
2062                 check = sfc_flow_copy_flags[i].spec_check;
2063                 if ((flag & miss_flags) == flag) {
2064                         if (check != NULL && (!check(match, spec, filter)))
2065                                 continue;
2066
2067                         copy_flags |= flag;
2068                         multiplier *= sfc_flow_copy_flags[i].vals_count;
2069                 }
2070         }
2071
2072         if (copy_flags == miss_flags)
2073                 return multiplier;
2074
2075         return 0;
2076 }
2077
2078 /**
2079  * Attempt to supplement the specification template to the minimally
2080  * supported set of match flags. To do this, it is necessary to copy
2081  * the specifications, filling them with the values of fields that
2082  * correspond to the missing flags.
2083  * The necessary and sufficient filter is built from the fewest number
2084  * of copies which could be made to cover the minimally required set
2085  * of flags.
2086  *
2087  * @param sa[in]
2088  *   SFC adapter.
2089  * @param spec[in, out]
2090  *   SFC flow specification to update.
2091  * @param error[out]
2092  *   Perform verbose error reporting if not NULL.
2093  */
2094 static int
2095 sfc_flow_spec_filters_complete(struct sfc_adapter *sa,
2096                                struct sfc_flow_spec *spec,
2097                                struct rte_flow_error *error)
2098 {
2099         struct sfc_filter *filter = &sa->filter;
2100         efx_filter_match_flags_t miss_flags;
2101         efx_filter_match_flags_t min_miss_flags = 0;
2102         efx_filter_match_flags_t match;
2103         unsigned int min_multiplier = UINT_MAX;
2104         unsigned int multiplier;
2105         unsigned int i;
2106         int rc;
2107
2108         match = spec->template.efs_match_flags;
2109         for (i = 0; i < filter->supported_match_num; i++) {
2110                 if ((match & filter->supported_match[i]) == match) {
2111                         miss_flags = filter->supported_match[i] & (~match);
2112                         multiplier = sfc_flow_check_missing_flags(miss_flags,
2113                                 &spec->template, filter);
2114                         if (multiplier > 0) {
2115                                 if (multiplier <= min_multiplier) {
2116                                         min_multiplier = multiplier;
2117                                         min_miss_flags = miss_flags;
2118                                 }
2119                         }
2120                 }
2121         }
2122
2123         if (min_multiplier == UINT_MAX) {
2124                 rte_flow_error_set(error, ENOTSUP,
2125                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2126                                    "The flow rule pattern is unsupported");
2127                 return -rte_errno;
2128         }
2129
2130         for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) {
2131                 efx_filter_match_flags_t flag = sfc_flow_copy_flags[i].flag;
2132
2133                 if ((flag & min_miss_flags) == flag) {
2134                         rc = sfc_flow_spec_add_match_flag(spec, flag, error);
2135                         if (rc != 0)
2136                                 return rc;
2137                 }
2138         }
2139
2140         return 0;
2141 }
2142
2143 /**
2144  * Check that set of match flags is referred to by a filter. Filter is
2145  * described by match flags with the ability to add OUTER_VID and INNER_VID
2146  * flags.
2147  *
2148  * @param match_flags[in]
2149  *   Set of match flags.
2150  * @param flags_pattern[in]
2151  *   Pattern of filter match flags.
2152  */
2153 static boolean_t
2154 sfc_flow_is_match_with_vids(efx_filter_match_flags_t match_flags,
2155                             efx_filter_match_flags_t flags_pattern)
2156 {
2157         if ((match_flags & flags_pattern) != flags_pattern)
2158                 return B_FALSE;
2159
2160         switch (match_flags & ~flags_pattern) {
2161         case 0:
2162         case EFX_FILTER_MATCH_OUTER_VID:
2163         case EFX_FILTER_MATCH_OUTER_VID | EFX_FILTER_MATCH_INNER_VID:
2164                 return B_TRUE;
2165         default:
2166                 return B_FALSE;
2167         }
2168 }
2169
2170 /**
2171  * Check whether the spec maps to a hardware filter which is known to be
2172  * ineffective despite being valid.
2173  *
2174  * @param filter[in]
2175  *   SFC filter with list of supported filters.
2176  * @param spec[in]
2177  *   SFC flow specification.
2178  */
2179 static boolean_t
2180 sfc_flow_is_match_flags_exception(struct sfc_filter *filter,
2181                                   struct sfc_flow_spec *spec)
2182 {
2183         unsigned int i;
2184         uint16_t ether_type;
2185         uint8_t ip_proto;
2186         efx_filter_match_flags_t match_flags;
2187
2188         for (i = 0; i < spec->count; i++) {
2189                 match_flags = spec->filters[i].efs_match_flags;
2190
2191                 if (sfc_flow_is_match_with_vids(match_flags,
2192                                                 EFX_FILTER_MATCH_ETHER_TYPE) ||
2193                     sfc_flow_is_match_with_vids(match_flags,
2194                                                 EFX_FILTER_MATCH_ETHER_TYPE |
2195                                                 EFX_FILTER_MATCH_LOC_MAC)) {
2196                         ether_type = spec->filters[i].efs_ether_type;
2197                         if (filter->supports_ip_proto_or_addr_filter &&
2198                             (ether_type == EFX_ETHER_TYPE_IPV4 ||
2199                              ether_type == EFX_ETHER_TYPE_IPV6))
2200                                 return B_TRUE;
2201                 } else if (sfc_flow_is_match_with_vids(match_flags,
2202                                 EFX_FILTER_MATCH_ETHER_TYPE |
2203                                 EFX_FILTER_MATCH_IP_PROTO) ||
2204                            sfc_flow_is_match_with_vids(match_flags,
2205                                 EFX_FILTER_MATCH_ETHER_TYPE |
2206                                 EFX_FILTER_MATCH_IP_PROTO |
2207                                 EFX_FILTER_MATCH_LOC_MAC)) {
2208                         ip_proto = spec->filters[i].efs_ip_proto;
2209                         if (filter->supports_rem_or_local_port_filter &&
2210                             (ip_proto == EFX_IPPROTO_TCP ||
2211                              ip_proto == EFX_IPPROTO_UDP))
2212                                 return B_TRUE;
2213                 }
2214         }
2215
2216         return B_FALSE;
2217 }
2218
2219 static int
2220 sfc_flow_validate_match_flags(struct sfc_adapter *sa,
2221                               struct rte_flow *flow,
2222                               struct rte_flow_error *error)
2223 {
2224         efx_filter_spec_t *spec_tmpl = &flow->spec.template;
2225         efx_filter_match_flags_t match_flags = spec_tmpl->efs_match_flags;
2226         int rc;
2227
2228         /* Initialize the first filter spec with template */
2229         flow->spec.filters[0] = *spec_tmpl;
2230         flow->spec.count = 1;
2231
2232         if (!sfc_filter_is_match_supported(sa, match_flags)) {
2233                 rc = sfc_flow_spec_filters_complete(sa, &flow->spec, error);
2234                 if (rc != 0)
2235                         return rc;
2236         }
2237
2238         if (sfc_flow_is_match_flags_exception(&sa->filter, &flow->spec)) {
2239                 rte_flow_error_set(error, ENOTSUP,
2240                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2241                         "The flow rule pattern is unsupported");
2242                 return -rte_errno;
2243         }
2244
2245         return 0;
2246 }
2247
2248 static int
2249 sfc_flow_parse(struct rte_eth_dev *dev,
2250                const struct rte_flow_attr *attr,
2251                const struct rte_flow_item pattern[],
2252                const struct rte_flow_action actions[],
2253                struct rte_flow *flow,
2254                struct rte_flow_error *error)
2255 {
2256         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
2257         int rc;
2258
2259         rc = sfc_flow_parse_attr(attr, flow, error);
2260         if (rc != 0)
2261                 goto fail_bad_value;
2262
2263         rc = sfc_flow_parse_pattern(pattern, flow, error);
2264         if (rc != 0)
2265                 goto fail_bad_value;
2266
2267         rc = sfc_flow_parse_actions(sa, actions, flow, error);
2268         if (rc != 0)
2269                 goto fail_bad_value;
2270
2271         rc = sfc_flow_validate_match_flags(sa, flow, error);
2272         if (rc != 0)
2273                 goto fail_bad_value;
2274
2275         return 0;
2276
2277 fail_bad_value:
2278         return rc;
2279 }
2280
2281 static int
2282 sfc_flow_validate(struct rte_eth_dev *dev,
2283                   const struct rte_flow_attr *attr,
2284                   const struct rte_flow_item pattern[],
2285                   const struct rte_flow_action actions[],
2286                   struct rte_flow_error *error)
2287 {
2288         struct rte_flow flow;
2289
2290         memset(&flow, 0, sizeof(flow));
2291
2292         return sfc_flow_parse(dev, attr, pattern, actions, &flow, error);
2293 }
2294
2295 static struct rte_flow *
2296 sfc_flow_create(struct rte_eth_dev *dev,
2297                 const struct rte_flow_attr *attr,
2298                 const struct rte_flow_item pattern[],
2299                 const struct rte_flow_action actions[],
2300                 struct rte_flow_error *error)
2301 {
2302         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
2303         struct rte_flow *flow = NULL;
2304         int rc;
2305
2306         flow = rte_zmalloc("sfc_rte_flow", sizeof(*flow), 0);
2307         if (flow == NULL) {
2308                 rte_flow_error_set(error, ENOMEM,
2309                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2310                                    "Failed to allocate memory");
2311                 goto fail_no_mem;
2312         }
2313
2314         rc = sfc_flow_parse(dev, attr, pattern, actions, flow, error);
2315         if (rc != 0)
2316                 goto fail_bad_value;
2317
2318         TAILQ_INSERT_TAIL(&sa->filter.flow_list, flow, entries);
2319
2320         sfc_adapter_lock(sa);
2321
2322         if (sa->state == SFC_ADAPTER_STARTED) {
2323                 rc = sfc_flow_filter_insert(sa, flow);
2324                 if (rc != 0) {
2325                         rte_flow_error_set(error, rc,
2326                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2327                                 "Failed to insert filter");
2328                         goto fail_filter_insert;
2329                 }
2330         }
2331
2332         sfc_adapter_unlock(sa);
2333
2334         return flow;
2335
2336 fail_filter_insert:
2337         TAILQ_REMOVE(&sa->filter.flow_list, flow, entries);
2338
2339 fail_bad_value:
2340         rte_free(flow);
2341         sfc_adapter_unlock(sa);
2342
2343 fail_no_mem:
2344         return NULL;
2345 }
2346
2347 static int
2348 sfc_flow_remove(struct sfc_adapter *sa,
2349                 struct rte_flow *flow,
2350                 struct rte_flow_error *error)
2351 {
2352         int rc = 0;
2353
2354         SFC_ASSERT(sfc_adapter_is_locked(sa));
2355
2356         if (sa->state == SFC_ADAPTER_STARTED) {
2357                 rc = sfc_flow_filter_remove(sa, flow);
2358                 if (rc != 0)
2359                         rte_flow_error_set(error, rc,
2360                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2361                                 "Failed to destroy flow rule");
2362         }
2363
2364         TAILQ_REMOVE(&sa->filter.flow_list, flow, entries);
2365         rte_free(flow);
2366
2367         return rc;
2368 }
2369
2370 static int
2371 sfc_flow_destroy(struct rte_eth_dev *dev,
2372                  struct rte_flow *flow,
2373                  struct rte_flow_error *error)
2374 {
2375         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
2376         struct rte_flow *flow_ptr;
2377         int rc = EINVAL;
2378
2379         sfc_adapter_lock(sa);
2380
2381         TAILQ_FOREACH(flow_ptr, &sa->filter.flow_list, entries) {
2382                 if (flow_ptr == flow)
2383                         rc = 0;
2384         }
2385         if (rc != 0) {
2386                 rte_flow_error_set(error, rc,
2387                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
2388                                    "Failed to find flow rule to destroy");
2389                 goto fail_bad_value;
2390         }
2391
2392         rc = sfc_flow_remove(sa, flow, error);
2393
2394 fail_bad_value:
2395         sfc_adapter_unlock(sa);
2396
2397         return -rc;
2398 }
2399
2400 static int
2401 sfc_flow_flush(struct rte_eth_dev *dev,
2402                struct rte_flow_error *error)
2403 {
2404         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
2405         struct rte_flow *flow;
2406         int rc = 0;
2407         int ret = 0;
2408
2409         sfc_adapter_lock(sa);
2410
2411         while ((flow = TAILQ_FIRST(&sa->filter.flow_list)) != NULL) {
2412                 rc = sfc_flow_remove(sa, flow, error);
2413                 if (rc != 0)
2414                         ret = rc;
2415         }
2416
2417         sfc_adapter_unlock(sa);
2418
2419         return -ret;
2420 }
2421
2422 static int
2423 sfc_flow_isolate(struct rte_eth_dev *dev, int enable,
2424                  struct rte_flow_error *error)
2425 {
2426         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
2427         int ret = 0;
2428
2429         sfc_adapter_lock(sa);
2430         if (sa->state != SFC_ADAPTER_INITIALIZED) {
2431                 rte_flow_error_set(error, EBUSY,
2432                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2433                                    NULL, "please close the port first");
2434                 ret = -rte_errno;
2435         } else {
2436                 sfc_sa2shared(sa)->isolated = (enable) ? B_TRUE : B_FALSE;
2437         }
2438         sfc_adapter_unlock(sa);
2439
2440         return ret;
2441 }
2442
2443 const struct rte_flow_ops sfc_flow_ops = {
2444         .validate = sfc_flow_validate,
2445         .create = sfc_flow_create,
2446         .destroy = sfc_flow_destroy,
2447         .flush = sfc_flow_flush,
2448         .query = NULL,
2449         .isolate = sfc_flow_isolate,
2450 };
2451
2452 void
2453 sfc_flow_init(struct sfc_adapter *sa)
2454 {
2455         SFC_ASSERT(sfc_adapter_is_locked(sa));
2456
2457         TAILQ_INIT(&sa->filter.flow_list);
2458 }
2459
2460 void
2461 sfc_flow_fini(struct sfc_adapter *sa)
2462 {
2463         struct rte_flow *flow;
2464
2465         SFC_ASSERT(sfc_adapter_is_locked(sa));
2466
2467         while ((flow = TAILQ_FIRST(&sa->filter.flow_list)) != NULL) {
2468                 TAILQ_REMOVE(&sa->filter.flow_list, flow, entries);
2469                 rte_free(flow);
2470         }
2471 }
2472
2473 void
2474 sfc_flow_stop(struct sfc_adapter *sa)
2475 {
2476         struct rte_flow *flow;
2477
2478         SFC_ASSERT(sfc_adapter_is_locked(sa));
2479
2480         TAILQ_FOREACH(flow, &sa->filter.flow_list, entries)
2481                 sfc_flow_filter_remove(sa, flow);
2482 }
2483
2484 int
2485 sfc_flow_start(struct sfc_adapter *sa)
2486 {
2487         struct rte_flow *flow;
2488         int rc = 0;
2489
2490         sfc_log_init(sa, "entry");
2491
2492         SFC_ASSERT(sfc_adapter_is_locked(sa));
2493
2494         TAILQ_FOREACH(flow, &sa->filter.flow_list, entries) {
2495                 rc = sfc_flow_filter_insert(sa, flow);
2496                 if (rc != 0)
2497                         goto fail_bad_flow;
2498         }
2499
2500         sfc_log_init(sa, "done");
2501
2502 fail_bad_flow:
2503         return rc;
2504 }