drivers/net/bnxt/bnxt_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <sys/queue.h>
   7
   8 #include <rte_log.h>
   9 #include <rte_malloc.h>
  10 #include <rte_flow.h>
  11 #include <rte_flow_driver.h>
  12 #include <rte_tailq.h>
  13
  14 #include "bnxt.h"
  15 #include "bnxt_filter.h"
  16 #include "bnxt_hwrm.h"
  17 #include "bnxt_ring.h"
  18 #include "bnxt_rxq.h"
  19 #include "bnxt_vnic.h"
  20 #include "bnxt_util.h"
  21 #include "hsi_struct_def_dpdk.h"
  22
  23 static int
  24 bnxt_flow_args_validate(const struct rte_flow_attr *attr,
  25                         const struct rte_flow_item pattern[],
  26                         const struct rte_flow_action actions[],
  27                         struct rte_flow_error *error)
  28 {
  29         if (!pattern) {
  30                 rte_flow_error_set(error,
  31                                    EINVAL,
  32                                    RTE_FLOW_ERROR_TYPE_ITEM_NUM,
  33                                    NULL,
  34                                    "NULL pattern.");
  35                 return -rte_errno;
  36         }
  37
  38         if (!actions) {
  39                 rte_flow_error_set(error,
  40                                    EINVAL,
  41                                    RTE_FLOW_ERROR_TYPE_ACTION_NUM,
  42                                    NULL,
  43                                    "NULL action.");
  44                 return -rte_errno;
  45         }
  46
  47         if (!attr) {
  48                 rte_flow_error_set(error,
  49                                    EINVAL,
  50                                    RTE_FLOW_ERROR_TYPE_ATTR,
  51                                    NULL,
  52                                    "NULL attribute.");
  53                 return -rte_errno;
  54         }
  55
  56         return 0;
  57 }
  58
  59 static const struct rte_flow_item *
  60 bnxt_flow_non_void_item(const struct rte_flow_item *cur)
  61 {
  62         while (1) {
  63                 if (cur->type != RTE_FLOW_ITEM_TYPE_VOID)
  64                         return cur;
  65                 cur++;
  66         }
  67 }
  68
  69 static const struct rte_flow_action *
  70 bnxt_flow_non_void_action(const struct rte_flow_action *cur)
  71 {
  72         while (1) {
  73                 if (cur->type != RTE_FLOW_ACTION_TYPE_VOID)
  74                         return cur;
  75                 cur++;
  76         }
  77 }
  78
  79 static int
  80 bnxt_filter_type_check(const struct rte_flow_item pattern[],
  81                        struct rte_flow_error *error __rte_unused)
  82 {
  83         const struct rte_flow_item *item =
  84                 bnxt_flow_non_void_item(pattern);
  85         int use_ntuple = 1;
  86
  87         while (item->type != RTE_FLOW_ITEM_TYPE_END) {
  88                 switch (item->type) {
  89                 case RTE_FLOW_ITEM_TYPE_ETH:
  90                         use_ntuple = 1;
  91                         break;
  92                 case RTE_FLOW_ITEM_TYPE_VLAN:
  93                         use_ntuple = 0;
  94                         break;
  95                 case RTE_FLOW_ITEM_TYPE_IPV4:
  96                 case RTE_FLOW_ITEM_TYPE_IPV6:
  97                 case RTE_FLOW_ITEM_TYPE_TCP:
  98                 case RTE_FLOW_ITEM_TYPE_UDP:
  99                         /* FALLTHROUGH */
 100                         /* need ntuple match, reset exact match */
 101                         if (!use_ntuple) {
 102                                 PMD_DRV_LOG(ERR,
 103                                         "VLAN flow cannot use NTUPLE filter\n");
 104                                 rte_flow_error_set
 105                                         (error,
 106                                          EINVAL,
 107                                          RTE_FLOW_ERROR_TYPE_ITEM,
 108                                          item,
 109                                          "Cannot use VLAN with NTUPLE");
 110                                 return -rte_errno;
 111                         }
 112                         use_ntuple |= 1;
 113                         break;
 114                 case RTE_FLOW_ITEM_TYPE_ANY:
 115                         use_ntuple = 0;
 116                         break;
 117                 default:
 118                         PMD_DRV_LOG(DEBUG, "Unknown Flow type\n");
 119                         use_ntuple |= 0;
 120                 }
 121                 item++;
 122         }
 123         return use_ntuple;
 124 }
 125
 126 static int
 127 bnxt_validate_and_parse_flow_type(struct bnxt *bp,
 128                                   const struct rte_flow_attr *attr,
 129                                   const struct rte_flow_item pattern[],
 130                                   struct rte_flow_error *error,
 131                                   struct bnxt_filter_info *filter)
 132 {
 133         const struct rte_flow_item *item = bnxt_flow_non_void_item(pattern);
 134         const struct rte_flow_item_vlan *vlan_spec, *vlan_mask;
 135         const struct rte_flow_item_ipv4 *ipv4_spec, *ipv4_mask;
 136         const struct rte_flow_item_ipv6 *ipv6_spec, *ipv6_mask;
 137         const struct rte_flow_item_tcp *tcp_spec, *tcp_mask;
 138         const struct rte_flow_item_udp *udp_spec, *udp_mask;
 139         const struct rte_flow_item_eth *eth_spec, *eth_mask;
 140         const struct rte_flow_item_nvgre *nvgre_spec;
 141         const struct rte_flow_item_nvgre *nvgre_mask;
 142         const struct rte_flow_item_gre *gre_spec;
 143         const struct rte_flow_item_gre *gre_mask;
 144         const struct rte_flow_item_vxlan *vxlan_spec;
 145         const struct rte_flow_item_vxlan *vxlan_mask;
 146         uint8_t vni_mask[] = {0xFF, 0xFF, 0xFF};
 147         uint8_t tni_mask[] = {0xFF, 0xFF, 0xFF};
 148         const struct rte_flow_item_vf *vf_spec;
 149         uint32_t tenant_id_be = 0;
 150         bool vni_masked = 0;
 151         bool tni_masked = 0;
 152         uint32_t vf = 0;
 153         int use_ntuple;
 154         uint32_t en = 0;
 155         uint32_t en_ethertype;
 156         int dflt_vnic;
 157
 158         use_ntuple = bnxt_filter_type_check(pattern, error);
 159         PMD_DRV_LOG(DEBUG, "Use NTUPLE %d\n", use_ntuple);
 160         if (use_ntuple < 0)
 161                 return use_ntuple;
 162
 163         filter->filter_type = use_ntuple ?
 164                 HWRM_CFA_NTUPLE_FILTER : HWRM_CFA_EM_FILTER;
 165         en_ethertype = use_ntuple ?
 166                 NTUPLE_FLTR_ALLOC_INPUT_EN_ETHERTYPE :
 167                 EM_FLOW_ALLOC_INPUT_EN_ETHERTYPE;
 168
 169         while (item->type != RTE_FLOW_ITEM_TYPE_END) {
 170                 if (item->last) {
 171                         /* last or range is NOT supported as match criteria */
 172                         rte_flow_error_set(error, EINVAL,
 173                                            RTE_FLOW_ERROR_TYPE_ITEM,
 174                                            item,
 175                                            "No support for range");
 176                         return -rte_errno;
 177                 }
 178
 179                 switch (item->type) {
 180                 case RTE_FLOW_ITEM_TYPE_ETH:
 181                         if (!item->spec || !item->mask)
 182                                 break;
 183
 184                         eth_spec = item->spec;
 185                         eth_mask = item->mask;
 186
 187                         /* Source MAC address mask cannot be partially set.
 188                          * Should be All 0's or all 1's.
 189                          * Destination MAC address mask must not be partially
 190                          * set. Should be all 1's or all 0's.
 191                          */
 192                         if ((!rte_is_zero_ether_addr(&eth_mask->src) &&
 193                              !rte_is_broadcast_ether_addr(&eth_mask->src)) ||
 194                             (!rte_is_zero_ether_addr(&eth_mask->dst) &&
 195                              !rte_is_broadcast_ether_addr(&eth_mask->dst))) {
 196                                 rte_flow_error_set(error,
 197                                                    EINVAL,
 198                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 199                                                    item,
 200                                                    "MAC_addr mask not valid");
 201                                 return -rte_errno;
 202                         }
 203
 204                         /* Mask is not allowed. Only exact matches are */
 205                         if (eth_mask->type &&
 206                             eth_mask->type != RTE_BE16(0xffff)) {
 207                                 rte_flow_error_set(error, EINVAL,
 208                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 209                                                    item,
 210                                                    "ethertype mask not valid");
 211                                 return -rte_errno;
 212                         }
 213
 214                         if (rte_is_broadcast_ether_addr(&eth_mask->dst)) {
 215                                 rte_memcpy(filter->dst_macaddr,
 216                                            &eth_spec->dst, 6);
 217                                 en |= use_ntuple ?
 218                                         NTUPLE_FLTR_ALLOC_INPUT_EN_DST_MACADDR :
 219                                         EM_FLOW_ALLOC_INPUT_EN_DST_MACADDR;
 220                         }
 221
 222                         if (rte_is_broadcast_ether_addr(&eth_mask->src)) {
 223                                 rte_memcpy(filter->src_macaddr,
 224                                            &eth_spec->src, 6);
 225                                 en |= use_ntuple ?
 226                                         NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_MACADDR :
 227                                         EM_FLOW_ALLOC_INPUT_EN_SRC_MACADDR;
 228                         } /*
 229                            * else {
 230                            *  PMD_DRV_LOG(ERR, "Handle this condition\n");
 231                            * }
 232                            */
 233                         if (eth_mask->type) {
 234                                 filter->ethertype =
 235                                         rte_be_to_cpu_16(eth_spec->type);
 236                                 en |= en_ethertype;
 237                         }
 238
 239                         break;
 240                 case RTE_FLOW_ITEM_TYPE_VLAN:
 241                         vlan_spec = item->spec;
 242                         vlan_mask = item->mask;
 243                         if (en & en_ethertype) {
 244                                 rte_flow_error_set(error, EINVAL,
 245                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 246                                                    item,
 247                                                    "VLAN TPID matching is not"
 248                                                    " supported");
 249                                 return -rte_errno;
 250                         }
 251                         if (vlan_mask->tci &&
 252                             vlan_mask->tci == RTE_BE16(0x0fff)) {
 253                                 /* Only the VLAN ID can be matched. */
 254                                 filter->l2_ovlan =
 255                                         rte_be_to_cpu_16(vlan_spec->tci &
 256                                                          RTE_BE16(0x0fff));
 257                                 en |= EM_FLOW_ALLOC_INPUT_EN_OVLAN_VID;
 258                         } else {
 259                                 rte_flow_error_set(error,
 260                                                    EINVAL,
 261                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 262                                                    item,
 263                                                    "VLAN mask is invalid");
 264                                 return -rte_errno;
 265                         }
 266                         if (vlan_mask->inner_type &&
 267                             vlan_mask->inner_type != RTE_BE16(0xffff)) {
 268                                 rte_flow_error_set(error, EINVAL,
 269                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 270                                                    item,
 271                                                    "inner ethertype mask not"
 272                                                    " valid");
 273                                 return -rte_errno;
 274                         }
 275                         if (vlan_mask->inner_type) {
 276                                 filter->ethertype =
 277                                         rte_be_to_cpu_16(vlan_spec->inner_type);
 278                                 en |= en_ethertype;
 279                         }
 280
 281                         break;
 282                 case RTE_FLOW_ITEM_TYPE_IPV4:
 283                         /* If mask is not involved, we could use EM filters. */
 284                         ipv4_spec = item->spec;
 285                         ipv4_mask = item->mask;
 286
 287                         if (!item->spec || !item->mask)
 288                                 break;
 289
 290                         /* Only IP DST and SRC fields are maskable. */
 291                         if (ipv4_mask->hdr.version_ihl ||
 292                             ipv4_mask->hdr.type_of_service ||
 293                             ipv4_mask->hdr.total_length ||
 294                             ipv4_mask->hdr.packet_id ||
 295                             ipv4_mask->hdr.fragment_offset ||
 296                             ipv4_mask->hdr.time_to_live ||
 297                             ipv4_mask->hdr.next_proto_id ||
 298                             ipv4_mask->hdr.hdr_checksum) {
 299                                 rte_flow_error_set(error,
 300                                                    EINVAL,
 301                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 302                                                    item,
 303                                                    "Invalid IPv4 mask.");
 304                                 return -rte_errno;
 305                         }
 306
 307                         filter->dst_ipaddr[0] = ipv4_spec->hdr.dst_addr;
 308                         filter->src_ipaddr[0] = ipv4_spec->hdr.src_addr;
 309
 310                         if (use_ntuple)
 311                                 en |= NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_IPADDR |
 312                                         NTUPLE_FLTR_ALLOC_INPUT_EN_DST_IPADDR;
 313                         else
 314                                 en |= EM_FLOW_ALLOC_INPUT_EN_SRC_IPADDR |
 315                                         EM_FLOW_ALLOC_INPUT_EN_DST_IPADDR;
 316
 317                         if (ipv4_mask->hdr.src_addr) {
 318                                 filter->src_ipaddr_mask[0] =
 319                                         ipv4_mask->hdr.src_addr;
 320                                 en |= !use_ntuple ? 0 :
 321                                      NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_IPADDR_MASK;
 322                         }
 323
 324                         if (ipv4_mask->hdr.dst_addr) {
 325                                 filter->dst_ipaddr_mask[0] =
 326                                         ipv4_mask->hdr.dst_addr;
 327                                 en |= !use_ntuple ? 0 :
 328                                      NTUPLE_FLTR_ALLOC_INPUT_EN_DST_IPADDR_MASK;
 329                         }
 330
 331                         filter->ip_addr_type = use_ntuple ?
 332                          HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_IP_ADDR_TYPE_IPV4 :
 333                          HWRM_CFA_EM_FLOW_ALLOC_INPUT_IP_ADDR_TYPE_IPV4;
 334
 335                         if (ipv4_spec->hdr.next_proto_id) {
 336                                 filter->ip_protocol =
 337                                         ipv4_spec->hdr.next_proto_id;
 338                                 if (use_ntuple)
 339                                         en |= NTUPLE_FLTR_ALLOC_IN_EN_IP_PROTO;
 340                                 else
 341                                         en |= EM_FLOW_ALLOC_INPUT_EN_IP_PROTO;
 342                         }
 343                         break;
 344                 case RTE_FLOW_ITEM_TYPE_IPV6:
 345                         ipv6_spec = item->spec;
 346                         ipv6_mask = item->mask;
 347
 348                         if (!item->spec || !item->mask)
 349                                 break;
 350
 351                         /* Only IP DST and SRC fields are maskable. */
 352                         if (ipv6_mask->hdr.vtc_flow ||
 353                             ipv6_mask->hdr.payload_len ||
 354                             ipv6_mask->hdr.proto ||
 355                             ipv6_mask->hdr.hop_limits) {
 356                                 rte_flow_error_set(error,
 357                                                    EINVAL,
 358                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 359                                                    item,
 360                                                    "Invalid IPv6 mask.");
 361                                 return -rte_errno;
 362                         }
 363
 364                         if (use_ntuple)
 365                                 en |= NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_IPADDR |
 366                                         NTUPLE_FLTR_ALLOC_INPUT_EN_DST_IPADDR;
 367                         else
 368                                 en |= EM_FLOW_ALLOC_INPUT_EN_SRC_IPADDR |
 369                                         EM_FLOW_ALLOC_INPUT_EN_DST_IPADDR;
 370
 371                         rte_memcpy(filter->src_ipaddr,
 372                                    ipv6_spec->hdr.src_addr, 16);
 373                         rte_memcpy(filter->dst_ipaddr,
 374                                    ipv6_spec->hdr.dst_addr, 16);
 375
 376                         if (!bnxt_check_zero_bytes(ipv6_mask->hdr.src_addr,
 377                                                    16)) {
 378                                 rte_memcpy(filter->src_ipaddr_mask,
 379                                            ipv6_mask->hdr.src_addr, 16);
 380                                 en |= !use_ntuple ? 0 :
 381                                     NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_IPADDR_MASK;
 382                         }
 383
 384                         if (!bnxt_check_zero_bytes(ipv6_mask->hdr.dst_addr,
 385                                                    16)) {
 386                                 rte_memcpy(filter->dst_ipaddr_mask,
 387                                            ipv6_mask->hdr.dst_addr, 16);
 388                                 en |= !use_ntuple ? 0 :
 389                                      NTUPLE_FLTR_ALLOC_INPUT_EN_DST_IPADDR_MASK;
 390                         }
 391
 392                         filter->ip_addr_type = use_ntuple ?
 393                                 NTUPLE_FLTR_ALLOC_INPUT_IP_ADDR_TYPE_IPV6 :
 394                                 EM_FLOW_ALLOC_INPUT_IP_ADDR_TYPE_IPV6;
 395                         break;
 396                 case RTE_FLOW_ITEM_TYPE_TCP:
 397                         tcp_spec = item->spec;
 398                         tcp_mask = item->mask;
 399
 400                         if (!item->spec || !item->mask)
 401                                 break;
 402
 403                         /* Check TCP mask. Only DST & SRC ports are maskable */
 404                         if (tcp_mask->hdr.sent_seq ||
 405                             tcp_mask->hdr.recv_ack ||
 406                             tcp_mask->hdr.data_off ||
 407                             tcp_mask->hdr.tcp_flags ||
 408                             tcp_mask->hdr.rx_win ||
 409                             tcp_mask->hdr.cksum ||
 410                             tcp_mask->hdr.tcp_urp) {
 411                                 rte_flow_error_set(error,
 412                                                    EINVAL,
 413                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 414                                                    item,
 415                                                    "Invalid TCP mask");
 416                                 return -rte_errno;
 417                         }
 418
 419                         filter->src_port = tcp_spec->hdr.src_port;
 420                         filter->dst_port = tcp_spec->hdr.dst_port;
 421
 422                         if (use_ntuple)
 423                                 en |= NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_PORT |
 424                                         NTUPLE_FLTR_ALLOC_INPUT_EN_DST_PORT;
 425                         else
 426                                 en |= EM_FLOW_ALLOC_INPUT_EN_SRC_PORT |
 427                                         EM_FLOW_ALLOC_INPUT_EN_DST_PORT;
 428
 429                         if (tcp_mask->hdr.dst_port) {
 430                                 filter->dst_port_mask = tcp_mask->hdr.dst_port;
 431                                 en |= !use_ntuple ? 0 :
 432                                   NTUPLE_FLTR_ALLOC_INPUT_EN_DST_PORT_MASK;
 433                         }
 434
 435                         if (tcp_mask->hdr.src_port) {
 436                                 filter->src_port_mask = tcp_mask->hdr.src_port;
 437                                 en |= !use_ntuple ? 0 :
 438                                   NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_PORT_MASK;
 439                         }
 440                         break;
 441                 case RTE_FLOW_ITEM_TYPE_UDP:
 442                         udp_spec = item->spec;
 443                         udp_mask = item->mask;
 444
 445                         if (!item->spec || !item->mask)
 446                                 break;
 447
 448                         if (udp_mask->hdr.dgram_len ||
 449                             udp_mask->hdr.dgram_cksum) {
 450                                 rte_flow_error_set(error,
 451                                                    EINVAL,
 452                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 453                                                    item,
 454                                                    "Invalid UDP mask");
 455                                 return -rte_errno;
 456                         }
 457
 458                         filter->src_port = udp_spec->hdr.src_port;
 459                         filter->dst_port = udp_spec->hdr.dst_port;
 460
 461                         if (use_ntuple)
 462                                 en |= NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_PORT |
 463                                         NTUPLE_FLTR_ALLOC_INPUT_EN_DST_PORT;
 464                         else
 465                                 en |= EM_FLOW_ALLOC_INPUT_EN_SRC_PORT |
 466                                         EM_FLOW_ALLOC_INPUT_EN_DST_PORT;
 467
 468                         if (udp_mask->hdr.dst_port) {
 469                                 filter->dst_port_mask = udp_mask->hdr.dst_port;
 470                                 en |= !use_ntuple ? 0 :
 471                                   NTUPLE_FLTR_ALLOC_INPUT_EN_DST_PORT_MASK;
 472                         }
 473
 474                         if (udp_mask->hdr.src_port) {
 475                                 filter->src_port_mask = udp_mask->hdr.src_port;
 476                                 en |= !use_ntuple ? 0 :
 477                                   NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_PORT_MASK;
 478                         }
 479                         break;
 480                 case RTE_FLOW_ITEM_TYPE_VXLAN:
 481                         vxlan_spec = item->spec;
 482                         vxlan_mask = item->mask;
 483                         /* Check if VXLAN item is used to describe protocol.
 484                          * If yes, both spec and mask should be NULL.
 485                          * If no, both spec and mask shouldn't be NULL.
 486                          */
 487                         if ((!vxlan_spec && vxlan_mask) ||
 488                             (vxlan_spec && !vxlan_mask)) {
 489                                 rte_flow_error_set(error,
 490                                                    EINVAL,
 491                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 492                                                    item,
 493                                                    "Invalid VXLAN item");
 494                                 return -rte_errno;
 495                         }
 496
 497                         if (!vxlan_spec && !vxlan_mask) {
 498                                 filter->tunnel_type =
 499                                 CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_VXLAN;
 500                                 break;
 501                         }
 502
 503                         if (vxlan_spec->rsvd1 || vxlan_spec->rsvd0[0] ||
 504                             vxlan_spec->rsvd0[1] || vxlan_spec->rsvd0[2] ||
 505                             vxlan_spec->flags != 0x8) {
 506                                 rte_flow_error_set(error,
 507                                                    EINVAL,
 508                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 509                                                    item,
 510                                                    "Invalid VXLAN item");
 511                                 return -rte_errno;
 512                         }
 513
 514                         /* Check if VNI is masked. */
 515                         if (vxlan_spec && vxlan_mask) {
 516                                 vni_masked =
 517                                         !!memcmp(vxlan_mask->vni, vni_mask,
 518                                                  RTE_DIM(vni_mask));
 519                                 if (vni_masked) {
 520                                         rte_flow_error_set
 521                                                 (error,
 522                                                  EINVAL,
 523                                                  RTE_FLOW_ERROR_TYPE_ITEM,
 524                                                  item,
 525                                                  "Invalid VNI mask");
 526                                         return -rte_errno;
 527                                 }
 528
 529                                 rte_memcpy(((uint8_t *)&tenant_id_be + 1),
 530                                            vxlan_spec->vni, 3);
 531                                 filter->vni =
 532                                         rte_be_to_cpu_32(tenant_id_be);
 533                                 filter->tunnel_type =
 534                                  CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_VXLAN;
 535                         }
 536                         break;
 537                 case RTE_FLOW_ITEM_TYPE_NVGRE:
 538                         nvgre_spec = item->spec;
 539                         nvgre_mask = item->mask;
 540                         /* Check if NVGRE item is used to describe protocol.
 541                          * If yes, both spec and mask should be NULL.
 542                          * If no, both spec and mask shouldn't be NULL.
 543                          */
 544                         if ((!nvgre_spec && nvgre_mask) ||
 545                             (nvgre_spec && !nvgre_mask)) {
 546                                 rte_flow_error_set(error,
 547                                                    EINVAL,
 548                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 549                                                    item,
 550                                                    "Invalid NVGRE item");
 551                                 return -rte_errno;
 552                         }
 553
 554                         if (!nvgre_spec && !nvgre_mask) {
 555                                 filter->tunnel_type =
 556                                 CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_NVGRE;
 557                                 break;
 558                         }
 559
 560                         if (nvgre_spec->c_k_s_rsvd0_ver != 0x2000 ||
 561                             nvgre_spec->protocol != 0x6558) {
 562                                 rte_flow_error_set(error,
 563                                                    EINVAL,
 564                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 565                                                    item,
 566                                                    "Invalid NVGRE item");
 567                                 return -rte_errno;
 568                         }
 569
 570                         if (nvgre_spec && nvgre_mask) {
 571                                 tni_masked =
 572                                         !!memcmp(nvgre_mask->tni, tni_mask,
 573                                                  RTE_DIM(tni_mask));
 574                                 if (tni_masked) {
 575                                         rte_flow_error_set
 576                                                 (error,
 577                                                  EINVAL,
 578                                                  RTE_FLOW_ERROR_TYPE_ITEM,
 579                                                  item,
 580                                                  "Invalid TNI mask");
 581                                         return -rte_errno;
 582                                 }
 583                                 rte_memcpy(((uint8_t *)&tenant_id_be + 1),
 584                                            nvgre_spec->tni, 3);
 585                                 filter->vni =
 586                                         rte_be_to_cpu_32(tenant_id_be);
 587                                 filter->tunnel_type =
 588                                  CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_NVGRE;
 589                         }
 590                         break;
 591
 592                 case RTE_FLOW_ITEM_TYPE_GRE:
 593                         gre_spec = (const struct rte_flow_item_gre *)item->spec;
 594                         gre_mask = (const struct rte_flow_item_gre *)item->mask;
 595
 596                         /*
 597                          *Check if GRE item is used to describe protocol.
 598                          * If yes, both spec and mask should be NULL.
 599                          * If no, both spec and mask shouldn't be NULL.
 600                          */
 601                         if (!!gre_spec ^ !!gre_mask) {
 602                                 rte_flow_error_set(error, EINVAL,
 603                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 604                                                    item,
 605                                                    "Invalid GRE item");
 606                                 return -rte_errno;
 607                         }
 608
 609                         if (!gre_spec && !gre_mask) {
 610                                 filter->tunnel_type =
 611                                 CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_IPGRE;
 612                                 break;
 613                         }
 614                         break;
 615
 616                 case RTE_FLOW_ITEM_TYPE_VF:
 617                         vf_spec = item->spec;
 618                         vf = vf_spec->id;
 619                         if (!BNXT_PF(bp)) {
 620                                 rte_flow_error_set(error,
 621                                                    EINVAL,
 622                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 623                                                    item,
 624                                                    "Configuring on a VF!");
 625                                 return -rte_errno;
 626                         }
 627
 628                         if (vf >= bp->pdev->max_vfs) {
 629                                 rte_flow_error_set(error,
 630                                                    EINVAL,
 631                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 632                                                    item,
 633                                                    "Incorrect VF id!");
 634                                 return -rte_errno;
 635                         }
 636
 637                         if (!attr->transfer) {
 638                                 rte_flow_error_set(error,
 639                                                    ENOTSUP,
 640                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 641                                                    item,
 642                                                    "Matching VF traffic without"
 643                                                    " affecting it (transfer attribute)"
 644                                                    " is unsupported");
 645                                 return -rte_errno;
 646                         }
 647
 648                         filter->mirror_vnic_id =
 649                         dflt_vnic = bnxt_hwrm_func_qcfg_vf_dflt_vnic_id(bp, vf);
 650                         if (dflt_vnic < 0) {
 651                                 /* This simply indicates there's no driver
 652                                  * loaded. This is not an error.
 653                                  */
 654                                 rte_flow_error_set
 655                                         (error,
 656                                          EINVAL,
 657                                          RTE_FLOW_ERROR_TYPE_ITEM,
 658                                          item,
 659                                          "Unable to get default VNIC for VF");
 660                                 return -rte_errno;
 661                         }
 662
 663                         filter->mirror_vnic_id = dflt_vnic;
 664                         en |= NTUPLE_FLTR_ALLOC_INPUT_EN_MIRROR_VNIC_ID;
 665                         break;
 666                 default:
 667                         break;
 668                 }
 669                 item++;
 670         }
 671         filter->enables = en;
 672
 673         return 0;
 674 }
 675
 676 /* Parse attributes */
 677 static int
 678 bnxt_flow_parse_attr(const struct rte_flow_attr *attr,
 679                      struct rte_flow_error *error)
 680 {
 681         /* Must be input direction */
 682         if (!attr->ingress) {
 683                 rte_flow_error_set(error,
 684                                    EINVAL,
 685                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 686                                    attr,
 687                                    "Only support ingress.");
 688                 return -rte_errno;
 689         }
 690
 691         /* Not supported */
 692         if (attr->egress) {
 693                 rte_flow_error_set(error,
 694                                    EINVAL,
 695                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
 696                                    attr,
 697                                    "No support for egress.");
 698                 return -rte_errno;
 699         }
 700
 701         /* Not supported */
 702         if (attr->priority) {
 703                 rte_flow_error_set(error,
 704                                    EINVAL,
 705                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 706                                    attr,
 707                                    "No support for priority.");
 708                 return -rte_errno;
 709         }
 710         return 0;
 711 }
 712
 713 struct bnxt_filter_info *
 714 bnxt_get_l2_filter(struct bnxt *bp, struct bnxt_filter_info *nf,
 715                    struct bnxt_vnic_info *vnic)
 716 {
 717         struct bnxt_filter_info *filter1, *f0;
 718         struct bnxt_vnic_info *vnic0;
 719         int rc;
 720
 721         vnic0 = &bp->vnic_info[0];
 722         f0 = STAILQ_FIRST(&vnic0->filter);
 723
 724         /* This flow has same DST MAC as the port/l2 filter. */
 725         if (memcmp(f0->l2_addr, nf->dst_macaddr, RTE_ETHER_ADDR_LEN) == 0)
 726                 return f0;
 727
 728         /* This flow needs DST MAC which is not same as port/l2 */
 729         PMD_DRV_LOG(DEBUG, "Create L2 filter for DST MAC\n");
 730         filter1 = bnxt_get_unused_filter(bp);
 731         if (filter1 == NULL)
 732                 return NULL;
 733
 734         filter1->flags = HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_PATH_RX;
 735         filter1->enables = HWRM_CFA_L2_FILTER_ALLOC_INPUT_ENABLES_L2_ADDR |
 736                         L2_FILTER_ALLOC_INPUT_EN_L2_ADDR_MASK;
 737         memcpy(filter1->l2_addr, nf->dst_macaddr, RTE_ETHER_ADDR_LEN);
 738         memset(filter1->l2_addr_mask, 0xff, RTE_ETHER_ADDR_LEN);
 739         rc = bnxt_hwrm_set_l2_filter(bp, vnic->fw_vnic_id,
 740                                      filter1);
 741         if (rc) {
 742                 bnxt_free_filter(bp, filter1);
 743                 return NULL;
 744         }
 745         return filter1;
 746 }
 747
 748 static int bnxt_vnic_prep(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 749 {
 750         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 751         uint64_t rx_offloads = dev_conf->rxmode.offloads;
 752         int rc;
 753
 754         rc = bnxt_vnic_grp_alloc(bp, vnic);
 755         if (rc)
 756                 goto ret;
 757
 758         rc = bnxt_hwrm_vnic_alloc(bp, vnic);
 759         if (rc) {
 760                 PMD_DRV_LOG(ERR, "HWRM vnic alloc failure rc: %x\n", rc);
 761                 goto ret;
 762         }
 763         bp->nr_vnics++;
 764
 765         /* RSS context is required only when there is more than one RSS ring */
 766         if (vnic->rx_queue_cnt > 1) {
 767                 rc = bnxt_hwrm_vnic_ctx_alloc(bp, vnic, 0 /* ctx_idx 0 */);
 768                 if (rc) {
 769                         PMD_DRV_LOG(ERR,
 770                                     "HWRM vnic ctx alloc failure: %x\n", rc);
 771                         goto ret;
 772                 }
 773         } else {
 774                 PMD_DRV_LOG(DEBUG, "No RSS context required\n");
 775         }
 776
 777         if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
 778                 vnic->vlan_strip = true;
 779         else
 780                 vnic->vlan_strip = false;
 781
 782         rc = bnxt_hwrm_vnic_cfg(bp, vnic);
 783         if (rc)
 784                 goto ret;
 785
 786         bnxt_hwrm_vnic_plcmode_cfg(bp, vnic);
 787
 788 ret:
 789         return rc;
 790 }
 791
 792 static int
 793 bnxt_validate_and_parse_flow(struct rte_eth_dev *dev,
 794                              const struct rte_flow_item pattern[],
 795                              const struct rte_flow_action actions[],
 796                              const struct rte_flow_attr *attr,
 797                              struct rte_flow_error *error,
 798                              struct bnxt_filter_info *filter)
 799 {
 800         const struct rte_flow_action *act =
 801                 bnxt_flow_non_void_action(actions);
 802         struct bnxt *bp = dev->data->dev_private;
 803         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 804         const struct rte_flow_action_queue *act_q;
 805         const struct rte_flow_action_vf *act_vf;
 806         struct bnxt_vnic_info *vnic, *vnic0;
 807         struct bnxt_filter_info *filter1;
 808         struct bnxt_rx_queue *rxq = NULL;
 809         int dflt_vnic, vnic_id;
 810         uint32_t vf = 0;
 811         int rc;
 812
 813         rc =
 814         bnxt_validate_and_parse_flow_type(bp, attr, pattern, error, filter);
 815         if (rc != 0)
 816                 goto ret;
 817
 818         rc = bnxt_flow_parse_attr(attr, error);
 819         if (rc != 0)
 820                 goto ret;
 821
 822         /* Since we support ingress attribute only - right now. */
 823         if (filter->filter_type == HWRM_CFA_EM_FILTER)
 824                 filter->flags = HWRM_CFA_EM_FLOW_ALLOC_INPUT_FLAGS_PATH_RX;
 825
 826         switch (act->type) {
 827         case RTE_FLOW_ACTION_TYPE_QUEUE:
 828                 /* Allow this flow. Redirect to a VNIC. */
 829                 act_q = (const struct rte_flow_action_queue *)act->conf;
 830                 if (!act_q->index || act_q->index >= bp->rx_nr_rings) {
 831                         rte_flow_error_set(error,
 832                                            EINVAL,
 833                                            RTE_FLOW_ERROR_TYPE_ACTION,
 834                                            act,
 835                                            "Invalid queue ID.");
 836                         rc = -rte_errno;
 837                         goto ret;
 838                 }
 839                 PMD_DRV_LOG(DEBUG, "Queue index %d\n", act_q->index);
 840
 841                 vnic_id = attr->group;
 842                 if (!vnic_id) {
 843                         PMD_DRV_LOG(DEBUG, "Group id is 0\n");
 844                         vnic_id = act_q->index;
 845                 }
 846
 847                 vnic = &bp->vnic_info[vnic_id];
 848                 if (vnic == NULL) {
 849                         rte_flow_error_set(error,
 850                                            EINVAL,
 851                                            RTE_FLOW_ERROR_TYPE_ACTION,
 852                                            act,
 853                                            "No matching VNIC found.");
 854                         rc = -rte_errno;
 855                         goto ret;
 856                 }
 857                 if (vnic->rx_queue_cnt) {
 858                         if (vnic->start_grp_id != act_q->index) {
 859                                 PMD_DRV_LOG(ERR,
 860                                             "VNIC already in use\n");
 861                                 rte_flow_error_set(error,
 862                                                    EINVAL,
 863                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 864                                                    act,
 865                                                    "VNIC already in use");
 866                                 rc = -rte_errno;
 867                                 goto ret;
 868                         }
 869                         goto use_vnic;
 870                 }
 871
 872                 rxq = bp->rx_queues[act_q->index];
 873
 874                 if (!(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS) && rxq)
 875                         goto use_vnic;
 876
 877                 if (!rxq ||
 878                     bp->vnic_info[0].fw_grp_ids[act_q->index] !=
 879                     INVALID_HW_RING_ID ||
 880                     !rxq->rx_deferred_start) {
 881                         PMD_DRV_LOG(ERR,
 882                                     "Queue invalid or used with other VNIC\n");
 883                         rte_flow_error_set(error,
 884                                            EINVAL,
 885                                            RTE_FLOW_ERROR_TYPE_ACTION,
 886                                            act,
 887                                            "Queue invalid queue or in use");
 888                         rc = -rte_errno;
 889                         goto ret;
 890                 }
 891
 892 use_vnic:
 893                 rxq->vnic = vnic;
 894                 vnic->rx_queue_cnt++;
 895                 vnic->start_grp_id = act_q->index;
 896                 vnic->end_grp_id = act_q->index;
 897                 vnic->func_default = 0; //This is not a default VNIC.
 898
 899                 PMD_DRV_LOG(DEBUG, "VNIC found\n");
 900
 901                 rc = bnxt_vnic_prep(bp, vnic);
 902                 if (rc)
 903                         goto ret;
 904
 905                 PMD_DRV_LOG(DEBUG,
 906                             "vnic[%d] = %p vnic->fw_grp_ids = %p\n",
 907                             act_q->index, vnic, vnic->fw_grp_ids);
 908
 909                 vnic->ff_pool_idx = vnic_id;
 910                 PMD_DRV_LOG(DEBUG,
 911                             "Setting vnic ff_idx %d\n", vnic->ff_pool_idx);
 912                 filter->dst_id = vnic->fw_vnic_id;
 913                 filter1 = bnxt_get_l2_filter(bp, filter, vnic);
 914                 if (filter1 == NULL) {
 915                         rc = -ENOSPC;
 916                         goto ret;
 917                 }
 918
 919                 filter->fw_l2_filter_id = filter1->fw_l2_filter_id;
 920                 PMD_DRV_LOG(DEBUG, "VNIC found\n");
 921                 break;
 922         case RTE_FLOW_ACTION_TYPE_DROP:
 923                 vnic0 = &bp->vnic_info[0];
 924                 filter1 = bnxt_get_l2_filter(bp, filter, vnic0);
 925                 if (filter1 == NULL) {
 926                         rc = -ENOSPC;
 927                         goto ret;
 928                 }
 929
 930                 filter->fw_l2_filter_id = filter1->fw_l2_filter_id;
 931                 if (filter->filter_type == HWRM_CFA_EM_FILTER)
 932                         filter->flags =
 933                                 HWRM_CFA_EM_FLOW_ALLOC_INPUT_FLAGS_DROP;
 934                 else
 935                         filter->flags =
 936                                 HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_FLAGS_DROP;
 937                 break;
 938         case RTE_FLOW_ACTION_TYPE_COUNT:
 939                 vnic0 = &bp->vnic_info[0];
 940                 filter1 = bnxt_get_l2_filter(bp, filter, vnic0);
 941                 if (filter1 == NULL) {
 942                         rc = -ENOSPC;
 943                         goto ret;
 944                 }
 945
 946                 filter->fw_l2_filter_id = filter1->fw_l2_filter_id;
 947                 filter->flags = HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_FLAGS_METER;
 948                 break;
 949         case RTE_FLOW_ACTION_TYPE_VF:
 950                 act_vf = (const struct rte_flow_action_vf *)act->conf;
 951                 vf = act_vf->id;
 952
 953                 if (filter->tunnel_type ==
 954                     CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_VXLAN ||
 955                     filter->tunnel_type ==
 956                     CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_IPGRE) {
 957                         /* If issued on a VF, ensure id is 0 and is trusted */
 958                         if (BNXT_VF(bp)) {
 959                                 if (!BNXT_VF_IS_TRUSTED(bp) || vf) {
 960                                         rte_flow_error_set(error, EINVAL,
 961                                                 RTE_FLOW_ERROR_TYPE_ACTION,
 962                                                 act,
 963                                                 "Incorrect VF");
 964                                         rc = -rte_errno;
 965                                         goto ret;
 966                                 }
 967                         }
 968
 969                         filter->enables |= filter->tunnel_type;
 970                         filter->filter_type = HWRM_CFA_TUNNEL_REDIRECT_FILTER;
 971                         goto done;
 972                 }
 973
 974                 if (vf >= bp->pdev->max_vfs) {
 975                         rte_flow_error_set(error,
 976                                            EINVAL,
 977                                            RTE_FLOW_ERROR_TYPE_ACTION,
 978                                            act,
 979                                            "Incorrect VF id!");
 980                         rc = -rte_errno;
 981                         goto ret;
 982                 }
 983
 984                 filter->mirror_vnic_id =
 985                 dflt_vnic = bnxt_hwrm_func_qcfg_vf_dflt_vnic_id(bp, vf);
 986                 if (dflt_vnic < 0) {
 987                         /* This simply indicates there's no driver loaded.
 988                          * This is not an error.
 989                          */
 990                         rte_flow_error_set(error,
 991                                            EINVAL,
 992                                            RTE_FLOW_ERROR_TYPE_ACTION,
 993                                            act,
 994                                            "Unable to get default VNIC for VF");
 995                         rc = -rte_errno;
 996                         goto ret;
 997                 }
 998
 999                 filter->mirror_vnic_id = dflt_vnic;
1000                 filter->enables |= NTUPLE_FLTR_ALLOC_INPUT_EN_MIRROR_VNIC_ID;
1001
1002                 vnic0 = &bp->vnic_info[0];
1003                 filter1 = bnxt_get_l2_filter(bp, filter, vnic0);
1004                 if (filter1 == NULL) {
1005                         rc = -ENOSPC;
1006                         goto ret;
1007                 }
1008
1009                 filter->fw_l2_filter_id = filter1->fw_l2_filter_id;
1010                 break;
1011
1012         default:
1013                 rte_flow_error_set(error,
1014                                    EINVAL,
1015                                    RTE_FLOW_ERROR_TYPE_ACTION,
1016                                    act,
1017                                    "Invalid action.");
1018                 rc = -rte_errno;
1019                 goto ret;
1020         }
1021
1022         if (filter1) {
1023                 bnxt_free_filter(bp, filter1);
1024                 filter1->fw_l2_filter_id = -1;
1025         }
1026 done:
1027         act = bnxt_flow_non_void_action(++act);
1028         if (act->type != RTE_FLOW_ACTION_TYPE_END) {
1029                 rte_flow_error_set(error,
1030                                    EINVAL,
1031                                    RTE_FLOW_ERROR_TYPE_ACTION,
1032                                    act,
1033                                    "Invalid action.");
1034                 rc = -rte_errno;
1035                 goto ret;
1036         }
1037 ret:
1038         return rc;
1039 }
1040
1041 static int
1042 bnxt_flow_validate(struct rte_eth_dev *dev,
1043                    const struct rte_flow_attr *attr,
1044                    const struct rte_flow_item pattern[],
1045                    const struct rte_flow_action actions[],
1046                    struct rte_flow_error *error)
1047 {
1048         struct bnxt *bp = dev->data->dev_private;
1049         struct bnxt_filter_info *filter;
1050         int ret = 0;
1051
1052         ret = bnxt_flow_args_validate(attr, pattern, actions, error);
1053         if (ret != 0)
1054                 return ret;
1055
1056         filter = bnxt_get_unused_filter(bp);
1057         if (filter == NULL) {
1058                 PMD_DRV_LOG(ERR, "Not enough resources for a new flow.\n");
1059                 return -ENOMEM;
1060         }
1061
1062         ret = bnxt_validate_and_parse_flow(dev, pattern, actions, attr,
1063                                            error, filter);
1064         /* No need to hold on to this filter if we are just validating flow */
1065         filter->fw_l2_filter_id = UINT64_MAX;
1066         bnxt_free_filter(bp, filter);
1067
1068         return ret;
1069 }
1070
1071 static int
1072 bnxt_match_filter(struct bnxt *bp, struct bnxt_filter_info *nf)
1073 {
1074         struct bnxt_filter_info *mf;
1075         struct rte_flow *flow;
1076         int i;
1077
1078         for (i = bp->max_vnics; i >= 0; i--) {
1079                 struct bnxt_vnic_info *vnic = &bp->vnic_info[i];
1080
1081                 if (vnic->fw_vnic_id == INVALID_VNIC_ID)
1082                         continue;
1083
1084                 STAILQ_FOREACH(flow, &vnic->flow_list, next) {
1085                         mf = flow->filter;
1086
1087                         if (mf->filter_type == nf->filter_type &&
1088                             mf->flags == nf->flags &&
1089                             mf->src_port == nf->src_port &&
1090                             mf->src_port_mask == nf->src_port_mask &&
1091                             mf->dst_port == nf->dst_port &&
1092                             mf->dst_port_mask == nf->dst_port_mask &&
1093                             mf->ip_protocol == nf->ip_protocol &&
1094                             mf->ip_addr_type == nf->ip_addr_type &&
1095                             mf->ethertype == nf->ethertype &&
1096                             mf->vni == nf->vni &&
1097                             mf->tunnel_type == nf->tunnel_type &&
1098                             mf->l2_ovlan == nf->l2_ovlan &&
1099                             mf->l2_ovlan_mask == nf->l2_ovlan_mask &&
1100                             mf->l2_ivlan == nf->l2_ivlan &&
1101                             mf->l2_ivlan_mask == nf->l2_ivlan_mask &&
1102                             !memcmp(mf->l2_addr, nf->l2_addr,
1103                                     RTE_ETHER_ADDR_LEN) &&
1104                             !memcmp(mf->l2_addr_mask, nf->l2_addr_mask,
1105                                     RTE_ETHER_ADDR_LEN) &&
1106                             !memcmp(mf->src_macaddr, nf->src_macaddr,
1107                                     RTE_ETHER_ADDR_LEN) &&
1108                             !memcmp(mf->dst_macaddr, nf->dst_macaddr,
1109                                     RTE_ETHER_ADDR_LEN) &&
1110                             !memcmp(mf->src_ipaddr, nf->src_ipaddr,
1111                                     sizeof(nf->src_ipaddr)) &&
1112                             !memcmp(mf->src_ipaddr_mask, nf->src_ipaddr_mask,
1113                                     sizeof(nf->src_ipaddr_mask)) &&
1114                             !memcmp(mf->dst_ipaddr, nf->dst_ipaddr,
1115                                     sizeof(nf->dst_ipaddr)) &&
1116                             !memcmp(mf->dst_ipaddr_mask, nf->dst_ipaddr_mask,
1117                                     sizeof(nf->dst_ipaddr_mask))) {
1118                                 if (mf->dst_id == nf->dst_id)
1119                                         return -EEXIST;
1120                                 /* Clear the new L2 filter that was created
1121                                  * earlier in bnxt_validate_and_parse_flow.
1122                                  */
1123                                 bnxt_hwrm_clear_l2_filter(bp, nf);
1124                                 /*
1125                                  * Same Flow, Different queue
1126                                  * Clear the old ntuple filter
1127                                  * Reuse the matching L2 filter
1128                                  * ID for the new filter
1129                                  */
1130                                 nf->fw_l2_filter_id = mf->fw_l2_filter_id;
1131                                 if (nf->filter_type == HWRM_CFA_EM_FILTER)
1132                                         bnxt_hwrm_clear_em_filter(bp, mf);
1133                                 if (nf->filter_type == HWRM_CFA_NTUPLE_FILTER)
1134                                         bnxt_hwrm_clear_ntuple_filter(bp, mf);
1135                                 /* Free the old filter, update flow
1136                                  * with new filter
1137                                  */
1138                                 bnxt_free_filter(bp, mf);
1139                                 flow->filter = nf;
1140                                 return -EXDEV;
1141                         }
1142                 }
1143         }
1144         return 0;
1145 }
1146
1147 static struct rte_flow *
1148 bnxt_flow_create(struct rte_eth_dev *dev,
1149                  const struct rte_flow_attr *attr,
1150                  const struct rte_flow_item pattern[],
1151                  const struct rte_flow_action actions[],
1152                  struct rte_flow_error *error)
1153 {
1154         struct bnxt *bp = dev->data->dev_private;
1155         struct bnxt_vnic_info *vnic = NULL;
1156         struct bnxt_filter_info *filter;
1157         bool update_flow = false;
1158         struct rte_flow *flow;
1159         unsigned int i;
1160         int ret = 0;
1161         uint32_t tun_type;
1162
1163         if (BNXT_VF(bp) && !BNXT_VF_IS_TRUSTED(bp)) {
1164                 rte_flow_error_set(error, EINVAL,
1165                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1166                                    "Failed to create flow, Not a Trusted VF!");
1167                 return NULL;
1168         }
1169
1170         flow = rte_zmalloc("bnxt_flow", sizeof(struct rte_flow), 0);
1171         if (!flow) {
1172                 rte_flow_error_set(error, ENOMEM,
1173                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1174                                    "Failed to allocate memory");
1175                 return flow;
1176         }
1177
1178         ret = bnxt_flow_args_validate(attr, pattern, actions, error);
1179         if (ret != 0) {
1180                 PMD_DRV_LOG(ERR, "Not a validate flow.\n");
1181                 goto free_flow;
1182         }
1183
1184         filter = bnxt_get_unused_filter(bp);
1185         if (filter == NULL) {
1186                 PMD_DRV_LOG(ERR, "Not enough resources for a new flow.\n");
1187                 goto free_flow;
1188         }
1189
1190         ret = bnxt_validate_and_parse_flow(dev, pattern, actions, attr,
1191                                            error, filter);
1192         if (ret != 0)
1193                 goto free_filter;
1194
1195         ret = bnxt_match_filter(bp, filter);
1196         if (ret == -EEXIST) {
1197                 PMD_DRV_LOG(DEBUG, "Flow already exists.\n");
1198                 /* Clear the filter that was created as part of
1199                  * validate_and_parse_flow() above
1200                  */
1201                 bnxt_hwrm_clear_l2_filter(bp, filter);
1202                 goto free_filter;
1203         } else if (ret == -EXDEV) {
1204                 PMD_DRV_LOG(DEBUG, "Flow with same pattern exists\n");
1205                 PMD_DRV_LOG(DEBUG, "Updating with different destination\n");
1206                 update_flow = true;
1207         }
1208
1209         /* If tunnel redirection to a VF/PF is specified then only tunnel_type
1210          * is set and enable is set to the tunnel type. Issue hwrm cmd directly
1211          * in such a case.
1212          */
1213         if (filter->filter_type == HWRM_CFA_TUNNEL_REDIRECT_FILTER &&
1214             filter->enables == filter->tunnel_type) {
1215                 ret = bnxt_hwrm_tunnel_redirect_query(bp, &tun_type);
1216                 if (ret) {
1217                         rte_flow_error_set(error, -ret,
1218                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1219                                            "Unable to query tunnel to VF");
1220                         goto free_filter;
1221                 }
1222                 if (tun_type == (1U << filter->tunnel_type)) {
1223                         ret =
1224                         bnxt_hwrm_tunnel_redirect_free(bp,
1225                                                        filter->tunnel_type);
1226                         if (ret) {
1227                                 PMD_DRV_LOG(ERR,
1228                                             "Unable to free existing tunnel\n");
1229                                 rte_flow_error_set(error, -ret,
1230                                                    RTE_FLOW_ERROR_TYPE_HANDLE,
1231                                                    NULL,
1232                                                    "Unable to free preexisting "
1233                                                    "tunnel on VF");
1234                                 goto free_filter;
1235                         }
1236                 }
1237                 ret = bnxt_hwrm_tunnel_redirect(bp, filter->tunnel_type);
1238                 if (ret) {
1239                         rte_flow_error_set(error, -ret,
1240                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1241                                            "Unable to redirect tunnel to VF");
1242                         goto free_filter;
1243                 }
1244                 vnic = &bp->vnic_info[0];
1245                 goto done;
1246         }
1247
1248         if (filter->filter_type == HWRM_CFA_EM_FILTER) {
1249                 filter->enables |=
1250                         HWRM_CFA_EM_FLOW_ALLOC_INPUT_ENABLES_L2_FILTER_ID;
1251                 ret = bnxt_hwrm_set_em_filter(bp, filter->dst_id, filter);
1252         }
1253
1254         if (filter->filter_type == HWRM_CFA_NTUPLE_FILTER) {
1255                 filter->enables |=
1256                         HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_ENABLES_L2_FILTER_ID;
1257                 ret = bnxt_hwrm_set_ntuple_filter(bp, filter->dst_id, filter);
1258         }
1259
1260         for (i = 0; i < bp->max_vnics; i++) {
1261                 vnic = &bp->vnic_info[i];
1262                 if (vnic->fw_vnic_id != INVALID_VNIC_ID &&
1263                     filter->dst_id == vnic->fw_vnic_id) {
1264                         PMD_DRV_LOG(ERR, "Found matching VNIC Id %d\n",
1265                                     vnic->ff_pool_idx);
1266                         break;
1267                 }
1268         }
1269 done:
1270         if (!ret) {
1271                 flow->filter = filter;
1272                 flow->vnic = vnic;
1273                 /* VNIC is set only in case of queue or RSS action */
1274                 if (vnic) {
1275                         /*
1276                          * RxQ0 is not used for flow filters.
1277                          */
1278
1279                         if (update_flow) {
1280                                 ret = -EXDEV;
1281                                 goto free_flow;
1282                         }
1283                         STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
1284                 }
1285                 PMD_DRV_LOG(ERR, "Successfully created flow.\n");
1286                 STAILQ_INSERT_TAIL(&vnic->flow_list, flow, next);
1287                 return flow;
1288         }
1289         if (!ret) {
1290                 flow->filter = filter;
1291                 flow->vnic = vnic;
1292                 if (update_flow) {
1293                         ret = -EXDEV;
1294                         goto free_flow;
1295                 }
1296                 PMD_DRV_LOG(ERR, "Successfully created flow.\n");
1297                 STAILQ_INSERT_TAIL(&vnic->flow_list, flow, next);
1298                 return flow;
1299         }
1300 free_filter:
1301         bnxt_free_filter(bp, filter);
1302 free_flow:
1303         if (ret == -EEXIST)
1304                 rte_flow_error_set(error, ret,
1305                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1306                                    "Matching Flow exists.");
1307         else if (ret == -EXDEV)
1308                 rte_flow_error_set(error, ret,
1309                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1310                                    "Flow with pattern exists, updating destination queue");
1311         else if (!rte_errno)
1312                 rte_flow_error_set(error, -ret,
1313                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1314                                    "Failed to create flow.");
1315         rte_free(flow);
1316         flow = NULL;
1317         return flow;
1318 }
1319
1320 static int bnxt_handle_tunnel_redirect_destroy(struct bnxt *bp,
1321                                                struct bnxt_filter_info *filter,
1322                                                struct rte_flow_error *error)
1323 {
1324         uint16_t tun_dst_fid;
1325         uint32_t tun_type;
1326         int ret = 0;
1327
1328         ret = bnxt_hwrm_tunnel_redirect_query(bp, &tun_type);
1329         if (ret) {
1330                 rte_flow_error_set(error, -ret,
1331                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1332                                    "Unable to query tunnel to VF");
1333                 return ret;
1334         }
1335         if (tun_type == (1U << filter->tunnel_type)) {
1336                 ret = bnxt_hwrm_tunnel_redirect_info(bp, filter->tunnel_type,
1337                                                      &tun_dst_fid);
1338                 if (ret) {
1339                         rte_flow_error_set(error, -ret,
1340                                            RTE_FLOW_ERROR_TYPE_HANDLE,
1341                                            NULL,
1342                                            "tunnel_redirect info cmd fail");
1343                         return ret;
1344                 }
1345                 PMD_DRV_LOG(INFO, "Pre-existing tunnel fid = %x vf->fid = %x\n",
1346                             tun_dst_fid + bp->first_vf_id, bp->fw_fid);
1347
1348                 /* Tunnel doesn't belong to this VF, so don't send HWRM
1349                  * cmd, just delete the flow from driver
1350                  */
1351                 if (bp->fw_fid != (tun_dst_fid + bp->first_vf_id))
1352                         PMD_DRV_LOG(ERR,
1353                                     "Tunnel does not belong to this VF, skip hwrm_tunnel_redirect_free\n");
1354                 else
1355                         ret = bnxt_hwrm_tunnel_redirect_free(bp,
1356                                                         filter->tunnel_type);
1357         }
1358         return ret;
1359 }
1360
1361 static int
1362 bnxt_flow_destroy(struct rte_eth_dev *dev,
1363                   struct rte_flow *flow,
1364                   struct rte_flow_error *error)
1365 {
1366         struct bnxt *bp = dev->data->dev_private;
1367         struct bnxt_filter_info *filter = flow->filter;
1368         struct bnxt_vnic_info *vnic = flow->vnic;
1369         int ret = 0;
1370
1371         if (!filter) {
1372                 ret = -EINVAL;
1373                 goto done;
1374         }
1375
1376         if (filter->filter_type == HWRM_CFA_TUNNEL_REDIRECT_FILTER &&
1377             filter->enables == filter->tunnel_type) {
1378                 ret = bnxt_handle_tunnel_redirect_destroy(bp,
1379                                                           filter,
1380                                                           error);
1381                 if (!ret)
1382                         goto done;
1383                 else
1384                         return ret;
1385         }
1386
1387         ret = bnxt_match_filter(bp, filter);
1388         if (ret == 0)
1389                 PMD_DRV_LOG(ERR, "Could not find matching flow\n");
1390         if (filter->filter_type == HWRM_CFA_EM_FILTER)
1391                 ret = bnxt_hwrm_clear_em_filter(bp, filter);
1392         if (filter->filter_type == HWRM_CFA_NTUPLE_FILTER)
1393                 ret = bnxt_hwrm_clear_ntuple_filter(bp, filter);
1394         else
1395                 ret = bnxt_hwrm_clear_l2_filter(bp, filter);
1396
1397 done:
1398         if (!ret) {
1399                 bnxt_free_filter(bp, filter);
1400                 STAILQ_REMOVE(&vnic->flow_list, flow, rte_flow, next);
1401                 rte_free(flow);
1402         } else {
1403                 rte_flow_error_set(error, -ret,
1404                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
1405                                    "Failed to destroy flow.");
1406         }
1407
1408         return ret;
1409 }
1410
1411 static int
1412 bnxt_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error)
1413 {
1414         struct bnxt *bp = dev->data->dev_private;
1415         struct bnxt_vnic_info *vnic;
1416         struct rte_flow *flow;
1417         unsigned int i;
1418         int ret = 0;
1419
1420         for (i = 0; i < bp->nr_vnics; i++) {
1421                 vnic = &bp->vnic_info[i];
1422                 STAILQ_FOREACH(flow, &vnic->flow_list, next) {
1423                         struct bnxt_filter_info *filter = flow->filter;
1424
1425                         if (filter->filter_type ==
1426                             HWRM_CFA_TUNNEL_REDIRECT_FILTER &&
1427                             filter->enables == filter->tunnel_type) {
1428                                 ret =
1429                                 bnxt_handle_tunnel_redirect_destroy(bp,
1430                                                                     filter,
1431                                                                     error);
1432                                 if (!ret)
1433                                         goto done;
1434                                 else
1435                                         return ret;
1436                         }
1437
1438                         if (filter->filter_type == HWRM_CFA_EM_FILTER)
1439                                 ret = bnxt_hwrm_clear_em_filter(bp, filter);
1440                         if (filter->filter_type == HWRM_CFA_NTUPLE_FILTER)
1441                                 ret = bnxt_hwrm_clear_ntuple_filter(bp, filter);
1442
1443                         if (ret) {
1444                                 rte_flow_error_set
1445                                         (error,
1446                                          -ret,
1447                                          RTE_FLOW_ERROR_TYPE_HANDLE,
1448                                          NULL,
1449                                          "Failed to flush flow in HW.");
1450                                 return -rte_errno;
1451                         }
1452 done:
1453                         bnxt_free_filter(bp, filter);
1454                         STAILQ_REMOVE(&vnic->flow_list, flow,
1455                                       rte_flow, next);
1456                         rte_free(flow);
1457                 }
1458         }
1459
1460         return ret;
1461 }
1462
1463 const struct rte_flow_ops bnxt_flow_ops = {
1464         .validate = bnxt_flow_validate,
1465         .create = bnxt_flow_create,
1466         .destroy = bnxt_flow_destroy,
1467         .flush = bnxt_flow_flush,
1468 };