drivers/net/ice/ice_generic_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Intel Corporation
   3  */
   4
   5 #include <sys/queue.h>
   6 #include <stdio.h>
   7 #include <errno.h>
   8 #include <stdint.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11 #include <stdarg.h>
  12
  13 #include <rte_ether.h>
  14 #include <rte_ethdev_driver.h>
  15 #include <rte_malloc.h>
  16 #include <rte_tailq.h>
  17
  18 #include "ice_ethdev.h"
  19 #include "ice_generic_flow.h"
  20 #include "ice_switch_filter.h"
  21
  22 static int ice_flow_validate(struct rte_eth_dev *dev,
  23                 const struct rte_flow_attr *attr,
  24                 const struct rte_flow_item pattern[],
  25                 const struct rte_flow_action actions[],
  26                 struct rte_flow_error *error);
  27 static struct rte_flow *ice_flow_create(struct rte_eth_dev *dev,
  28                 const struct rte_flow_attr *attr,
  29                 const struct rte_flow_item pattern[],
  30                 const struct rte_flow_action actions[],
  31                 struct rte_flow_error *error);
  32 static int ice_flow_destroy(struct rte_eth_dev *dev,
  33                 struct rte_flow *flow,
  34                 struct rte_flow_error *error);
  35 static int ice_flow_flush(struct rte_eth_dev *dev,
  36                 struct rte_flow_error *error);
  37
  38 const struct rte_flow_ops ice_flow_ops = {
  39         .validate = ice_flow_validate,
  40         .create = ice_flow_create,
  41         .destroy = ice_flow_destroy,
  42         .flush = ice_flow_flush,
  43 };
  44
  45 static int
  46 ice_flow_valid_attr(const struct rte_flow_attr *attr,
  47                      struct rte_flow_error *error)
  48 {
  49         /* Must be input direction */
  50         if (!attr->ingress) {
  51                 rte_flow_error_set(error, EINVAL,
  52                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
  53                                    attr, "Only support ingress.");
  54                 return -rte_errno;
  55         }
  56
  57         /* Not supported */
  58         if (attr->egress) {
  59                 rte_flow_error_set(error, EINVAL,
  60                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
  61                                    attr, "Not support egress.");
  62                 return -rte_errno;
  63         }
  64
  65         /* Not supported */
  66         if (attr->priority) {
  67                 rte_flow_error_set(error, EINVAL,
  68                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
  69                                    attr, "Not support priority.");
  70                 return -rte_errno;
  71         }
  72
  73         /* Not supported */
  74         if (attr->group) {
  75                 rte_flow_error_set(error, EINVAL,
  76                                    RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
  77                                    attr, "Not support group.");
  78                 return -rte_errno;
  79         }
  80
  81         return 0;
  82 }
  83
  84 /* Find the first VOID or non-VOID item pointer */
  85 static const struct rte_flow_item *
  86 ice_find_first_item(const struct rte_flow_item *item, bool is_void)
  87 {
  88         bool is_find;
  89
  90         while (item->type != RTE_FLOW_ITEM_TYPE_END) {
  91                 if (is_void)
  92                         is_find = item->type == RTE_FLOW_ITEM_TYPE_VOID;
  93                 else
  94                         is_find = item->type != RTE_FLOW_ITEM_TYPE_VOID;
  95                 if (is_find)
  96                         break;
  97                 item++;
  98         }
  99         return item;
 100 }
 101
 102 /* Skip all VOID items of the pattern */
 103 static void
 104 ice_pattern_skip_void_item(struct rte_flow_item *items,
 105                             const struct rte_flow_item *pattern)
 106 {
 107         uint32_t cpy_count = 0;
 108         const struct rte_flow_item *pb = pattern, *pe = pattern;
 109
 110         for (;;) {
 111                 /* Find a non-void item first */
 112                 pb = ice_find_first_item(pb, false);
 113                 if (pb->type == RTE_FLOW_ITEM_TYPE_END) {
 114                         pe = pb;
 115                         break;
 116                 }
 117
 118                 /* Find a void item */
 119                 pe = ice_find_first_item(pb + 1, true);
 120
 121                 cpy_count = pe - pb;
 122                 rte_memcpy(items, pb, sizeof(struct rte_flow_item) * cpy_count);
 123
 124                 items += cpy_count;
 125
 126                 if (pe->type == RTE_FLOW_ITEM_TYPE_END) {
 127                         pb = pe;
 128                         break;
 129                 }
 130
 131                 pb = pe + 1;
 132         }
 133         /* Copy the END item. */
 134         rte_memcpy(items, pe, sizeof(struct rte_flow_item));
 135 }
 136
 137 /* Check if the pattern matches a supported item type array */
 138 static bool
 139 ice_match_pattern(enum rte_flow_item_type *item_array,
 140                 const struct rte_flow_item *pattern)
 141 {
 142         const struct rte_flow_item *item = pattern;
 143
 144         while ((*item_array == item->type) &&
 145                (*item_array != RTE_FLOW_ITEM_TYPE_END)) {
 146                 item_array++;
 147                 item++;
 148         }
 149
 150         return (*item_array == RTE_FLOW_ITEM_TYPE_END &&
 151                 item->type == RTE_FLOW_ITEM_TYPE_END);
 152 }
 153
 154 static uint64_t ice_flow_valid_pattern(const struct rte_flow_item pattern[],
 155                 struct rte_flow_error *error)
 156 {
 157         uint16_t i = 0;
 158         uint64_t inset;
 159         struct rte_flow_item *items; /* used for pattern without VOID items */
 160         uint32_t item_num = 0; /* non-void item number */
 161
 162         /* Get the non-void item number of pattern */
 163         while ((pattern + i)->type != RTE_FLOW_ITEM_TYPE_END) {
 164                 if ((pattern + i)->type != RTE_FLOW_ITEM_TYPE_VOID)
 165                         item_num++;
 166                 i++;
 167         }
 168         item_num++;
 169
 170         items = rte_zmalloc("ice_pattern",
 171                             item_num * sizeof(struct rte_flow_item), 0);
 172         if (!items) {
 173                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_ITEM_NUM,
 174                                    NULL, "No memory for PMD internal items.");
 175                 return -ENOMEM;
 176         }
 177
 178         ice_pattern_skip_void_item(items, pattern);
 179
 180         for (i = 0; i < RTE_DIM(ice_supported_patterns); i++)
 181                 if (ice_match_pattern(ice_supported_patterns[i].items,
 182                                       items)) {
 183                         inset = ice_supported_patterns[i].sw_fields;
 184                         rte_free(items);
 185                         return inset;
 186                 }
 187         rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
 188                            pattern, "Unsupported pattern");
 189
 190         rte_free(items);
 191         return 0;
 192 }
 193
 194 static uint64_t ice_get_flow_field(const struct rte_flow_item pattern[],
 195                         struct rte_flow_error *error)
 196 {
 197         const struct rte_flow_item *item = pattern;
 198         const struct rte_flow_item_eth *eth_spec, *eth_mask;
 199         const struct rte_flow_item_ipv4 *ipv4_spec, *ipv4_mask;
 200         const struct rte_flow_item_ipv6 *ipv6_spec, *ipv6_mask;
 201         const struct rte_flow_item_tcp *tcp_spec, *tcp_mask;
 202         const struct rte_flow_item_udp *udp_spec, *udp_mask;
 203         const struct rte_flow_item_sctp *sctp_spec, *sctp_mask;
 204         const struct rte_flow_item_icmp *icmp_mask;
 205         const struct rte_flow_item_icmp6 *icmp6_mask;
 206         const struct rte_flow_item_vxlan *vxlan_spec, *vxlan_mask;
 207         const struct rte_flow_item_nvgre *nvgre_spec, *nvgre_mask;
 208         enum rte_flow_item_type item_type;
 209         uint8_t  ipv6_addr_mask[16] = {
 210                 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 211                 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 212         uint64_t input_set = ICE_INSET_NONE;
 213         bool is_tunnel = false;
 214
 215         for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
 216                 if (item->last) {
 217                         rte_flow_error_set(error, EINVAL,
 218                                            RTE_FLOW_ERROR_TYPE_ITEM,
 219                                            item,
 220                                            "Not support range");
 221                         return 0;
 222                 }
 223                 item_type = item->type;
 224                 switch (item_type) {
 225                 case RTE_FLOW_ITEM_TYPE_ETH:
 226                         eth_spec = item->spec;
 227                         eth_mask = item->mask;
 228
 229                         if (eth_spec && eth_mask) {
 230                                 if (rte_is_broadcast_ether_addr(&eth_mask->src))
 231                                         input_set |= ICE_INSET_SMAC;
 232                                 if (rte_is_broadcast_ether_addr(&eth_mask->dst))
 233                                         input_set |= ICE_INSET_DMAC;
 234                                 if (eth_mask->type == RTE_BE16(0xffff))
 235                                         input_set |= ICE_INSET_ETHERTYPE;
 236                         }
 237                         break;
 238                 case RTE_FLOW_ITEM_TYPE_IPV4:
 239                         ipv4_spec = item->spec;
 240                         ipv4_mask = item->mask;
 241
 242                         if (!(ipv4_spec && ipv4_mask))
 243                                 break;
 244
 245                         /* Check IPv4 mask and update input set */
 246                         if (ipv4_mask->hdr.version_ihl ||
 247                             ipv4_mask->hdr.total_length ||
 248                             ipv4_mask->hdr.packet_id ||
 249                             ipv4_mask->hdr.hdr_checksum) {
 250                                 rte_flow_error_set(error, EINVAL,
 251                                            RTE_FLOW_ERROR_TYPE_ITEM,
 252                                            item,
 253                                            "Invalid IPv4 mask.");
 254                                 return 0;
 255                         }
 256
 257                         if (is_tunnel) {
 258                                 if (ipv4_mask->hdr.src_addr == UINT32_MAX)
 259                                         input_set |= ICE_INSET_TUN_IPV4_SRC;
 260                                 if (ipv4_mask->hdr.dst_addr == UINT32_MAX)
 261                                         input_set |= ICE_INSET_TUN_IPV4_DST;
 262                                 if (ipv4_mask->hdr.time_to_live == UINT8_MAX)
 263                                         input_set |= ICE_INSET_TUN_IPV4_TTL;
 264                                 if (ipv4_mask->hdr.next_proto_id == UINT8_MAX)
 265                                         input_set |= ICE_INSET_TUN_IPV4_PROTO;
 266                         } else {
 267                                 if (ipv4_mask->hdr.src_addr == UINT32_MAX)
 268                                         input_set |= ICE_INSET_IPV4_SRC;
 269                                 if (ipv4_mask->hdr.dst_addr == UINT32_MAX)
 270                                         input_set |= ICE_INSET_IPV4_DST;
 271                                 if (ipv4_mask->hdr.time_to_live == UINT8_MAX)
 272                                         input_set |= ICE_INSET_IPV4_TTL;
 273                                 if (ipv4_mask->hdr.next_proto_id == UINT8_MAX)
 274                                         input_set |= ICE_INSET_IPV4_PROTO;
 275                                 if (ipv4_mask->hdr.type_of_service == UINT8_MAX)
 276                                         input_set |= ICE_INSET_IPV4_TOS;
 277                         }
 278                         break;
 279                 case RTE_FLOW_ITEM_TYPE_IPV6:
 280                         ipv6_spec = item->spec;
 281                         ipv6_mask = item->mask;
 282
 283                         if (!(ipv6_spec && ipv6_mask))
 284                                 break;
 285
 286                         if (ipv6_mask->hdr.payload_len) {
 287                                 rte_flow_error_set(error, EINVAL,
 288                                            RTE_FLOW_ERROR_TYPE_ITEM,
 289                                            item,
 290                                            "Invalid IPv6 mask");
 291                                 return 0;
 292                         }
 293
 294                         if (is_tunnel) {
 295                                 if (!memcmp(ipv6_mask->hdr.src_addr,
 296                                             ipv6_addr_mask,
 297                                             RTE_DIM(ipv6_mask->hdr.src_addr)))
 298                                         input_set |= ICE_INSET_TUN_IPV6_SRC;
 299                                 if (!memcmp(ipv6_mask->hdr.dst_addr,
 300                                             ipv6_addr_mask,
 301                                             RTE_DIM(ipv6_mask->hdr.dst_addr)))
 302                                         input_set |= ICE_INSET_TUN_IPV6_DST;
 303                                 if (ipv6_mask->hdr.proto == UINT8_MAX)
 304                                         input_set |= ICE_INSET_TUN_IPV6_PROTO;
 305                                 if (ipv6_mask->hdr.hop_limits == UINT8_MAX)
 306                                         input_set |= ICE_INSET_TUN_IPV6_TTL;
 307                         } else {
 308                                 if (!memcmp(ipv6_mask->hdr.src_addr,
 309                                             ipv6_addr_mask,
 310                                             RTE_DIM(ipv6_mask->hdr.src_addr)))
 311                                         input_set |= ICE_INSET_IPV6_SRC;
 312                                 if (!memcmp(ipv6_mask->hdr.dst_addr,
 313                                             ipv6_addr_mask,
 314                                             RTE_DIM(ipv6_mask->hdr.dst_addr)))
 315                                         input_set |= ICE_INSET_IPV6_DST;
 316                                 if (ipv6_mask->hdr.proto == UINT8_MAX)
 317                                         input_set |= ICE_INSET_IPV6_PROTO;
 318                                 if (ipv6_mask->hdr.hop_limits == UINT8_MAX)
 319                                         input_set |= ICE_INSET_IPV6_HOP_LIMIT;
 320                                 if ((ipv6_mask->hdr.vtc_flow &
 321                                         rte_cpu_to_be_32(RTE_IPV6_HDR_TC_MASK))
 322                                                 == rte_cpu_to_be_32
 323                                                 (RTE_IPV6_HDR_TC_MASK))
 324                                         input_set |= ICE_INSET_IPV6_TOS;
 325                         }
 326
 327                         break;
 328                 case RTE_FLOW_ITEM_TYPE_UDP:
 329                         udp_spec = item->spec;
 330                         udp_mask = item->mask;
 331
 332                         if (!(udp_spec && udp_mask))
 333                                 break;
 334
 335                         /* Check UDP mask and update input set*/
 336                         if (udp_mask->hdr.dgram_len ||
 337                             udp_mask->hdr.dgram_cksum) {
 338                                 rte_flow_error_set(error, EINVAL,
 339                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 340                                                    item,
 341                                                    "Invalid UDP mask");
 342                                 return 0;
 343                         }
 344
 345                         if (is_tunnel) {
 346                                 if (udp_mask->hdr.src_port == UINT16_MAX)
 347                                         input_set |= ICE_INSET_TUN_SRC_PORT;
 348                                 if (udp_mask->hdr.dst_port == UINT16_MAX)
 349                                         input_set |= ICE_INSET_TUN_DST_PORT;
 350                         } else {
 351                                 if (udp_mask->hdr.src_port == UINT16_MAX)
 352                                         input_set |= ICE_INSET_SRC_PORT;
 353                                 if (udp_mask->hdr.dst_port == UINT16_MAX)
 354                                         input_set |= ICE_INSET_DST_PORT;
 355                         }
 356
 357                         break;
 358                 case RTE_FLOW_ITEM_TYPE_TCP:
 359                         tcp_spec = item->spec;
 360                         tcp_mask = item->mask;
 361
 362                         if (!(tcp_spec && tcp_mask))
 363                                 break;
 364
 365                         /* Check TCP mask and update input set */
 366                         if (tcp_mask->hdr.sent_seq ||
 367                             tcp_mask->hdr.recv_ack ||
 368                             tcp_mask->hdr.data_off ||
 369                             tcp_mask->hdr.tcp_flags ||
 370                             tcp_mask->hdr.rx_win ||
 371                             tcp_mask->hdr.cksum ||
 372                             tcp_mask->hdr.tcp_urp) {
 373                                 rte_flow_error_set(error, EINVAL,
 374                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 375                                                    item,
 376                                                    "Invalid TCP mask");
 377                                 return 0;
 378                         }
 379
 380                         if (is_tunnel) {
 381                                 if (tcp_mask->hdr.src_port == UINT16_MAX)
 382                                         input_set |= ICE_INSET_TUN_SRC_PORT;
 383                                 if (tcp_mask->hdr.dst_port == UINT16_MAX)
 384                                         input_set |= ICE_INSET_TUN_DST_PORT;
 385                         } else {
 386                                 if (tcp_mask->hdr.src_port == UINT16_MAX)
 387                                         input_set |= ICE_INSET_SRC_PORT;
 388                                 if (tcp_mask->hdr.dst_port == UINT16_MAX)
 389                                         input_set |= ICE_INSET_DST_PORT;
 390                         }
 391
 392                         break;
 393                 case RTE_FLOW_ITEM_TYPE_SCTP:
 394                         sctp_spec = item->spec;
 395                         sctp_mask = item->mask;
 396
 397                         if (!(sctp_spec && sctp_mask))
 398                                 break;
 399
 400                         /* Check SCTP mask and update input set */
 401                         if (sctp_mask->hdr.cksum) {
 402                                 rte_flow_error_set(error, EINVAL,
 403                                            RTE_FLOW_ERROR_TYPE_ITEM,
 404                                            item,
 405                                            "Invalid SCTP mask");
 406                                 return 0;
 407                         }
 408
 409                         if (is_tunnel) {
 410                                 if (sctp_mask->hdr.src_port == UINT16_MAX)
 411                                         input_set |= ICE_INSET_TUN_SRC_PORT;
 412                                 if (sctp_mask->hdr.dst_port == UINT16_MAX)
 413                                         input_set |= ICE_INSET_TUN_DST_PORT;
 414                         } else {
 415                                 if (sctp_mask->hdr.src_port == UINT16_MAX)
 416                                         input_set |= ICE_INSET_SRC_PORT;
 417                                 if (sctp_mask->hdr.dst_port == UINT16_MAX)
 418                                         input_set |= ICE_INSET_DST_PORT;
 419                         }
 420
 421                         break;
 422                 case RTE_FLOW_ITEM_TYPE_ICMP:
 423                         icmp_mask = item->mask;
 424                         if (icmp_mask->hdr.icmp_code ||
 425                             icmp_mask->hdr.icmp_cksum ||
 426                             icmp_mask->hdr.icmp_ident ||
 427                             icmp_mask->hdr.icmp_seq_nb) {
 428                                 rte_flow_error_set(error, EINVAL,
 429                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 430                                                    item,
 431                                                    "Invalid ICMP mask");
 432                                 return 0;
 433                         }
 434
 435                         if (icmp_mask->hdr.icmp_type == UINT8_MAX)
 436                                 input_set |= ICE_INSET_ICMP;
 437                         break;
 438                 case RTE_FLOW_ITEM_TYPE_ICMP6:
 439                         icmp6_mask = item->mask;
 440                         if (icmp6_mask->code ||
 441                             icmp6_mask->checksum) {
 442                                 rte_flow_error_set(error, EINVAL,
 443                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 444                                                    item,
 445                                                    "Invalid ICMP6 mask");
 446                                 return 0;
 447                         }
 448
 449                         if (icmp6_mask->type == UINT8_MAX)
 450                                 input_set |= ICE_INSET_ICMP6;
 451                         break;
 452                 case RTE_FLOW_ITEM_TYPE_VXLAN:
 453                         vxlan_spec = item->spec;
 454                         vxlan_mask = item->mask;
 455                         /* Check if VXLAN item is used to describe protocol.
 456                          * If yes, both spec and mask should be NULL.
 457                          * If no, both spec and mask shouldn't be NULL.
 458                          */
 459                         if ((!vxlan_spec && vxlan_mask) ||
 460                             (vxlan_spec && !vxlan_mask)) {
 461                                 rte_flow_error_set(error, EINVAL,
 462                                            RTE_FLOW_ERROR_TYPE_ITEM,
 463                                            item,
 464                                            "Invalid VXLAN item");
 465                                 return 0;
 466                         }
 467                         is_tunnel = 1;
 468
 469                         break;
 470                 case RTE_FLOW_ITEM_TYPE_NVGRE:
 471                         nvgre_spec = item->spec;
 472                         nvgre_mask = item->mask;
 473                         /* Check if NVGRE item is used to describe protocol.
 474                          * If yes, both spec and mask should be NULL.
 475                          * If no, both spec and mask shouldn't be NULL.
 476                          */
 477                         if ((!nvgre_spec && nvgre_mask) ||
 478                             (nvgre_spec && !nvgre_mask)) {
 479                                 rte_flow_error_set(error, EINVAL,
 480                                            RTE_FLOW_ERROR_TYPE_ITEM,
 481                                            item,
 482                                            "Invalid NVGRE item");
 483                                 return 0;
 484                         }
 485                         is_tunnel = 1;
 486
 487                         break;
 488                 case RTE_FLOW_ITEM_TYPE_VOID:
 489                         break;
 490                 default:
 491                         rte_flow_error_set(error, EINVAL,
 492                                            RTE_FLOW_ERROR_TYPE_ITEM,
 493                                            item,
 494                                            "Invalid pattern");
 495                         break;
 496                 }
 497         }
 498         return input_set;
 499 }
 500
 501 static int ice_flow_valid_inset(const struct rte_flow_item pattern[],
 502                         uint64_t inset, struct rte_flow_error *error)
 503 {
 504         uint64_t fields;
 505
 506         /* get valid field */
 507         fields = ice_get_flow_field(pattern, error);
 508         if (!fields || fields & (~inset)) {
 509                 rte_flow_error_set(error, EINVAL,
 510                                    RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
 511                                    pattern,
 512                                    "Invalid input set");
 513                 return -rte_errno;
 514         }
 515
 516         return 0;
 517 }
 518
 519 static int ice_flow_valid_action(struct rte_eth_dev *dev,
 520                                 const struct rte_flow_action *actions,
 521                                 struct rte_flow_error *error)
 522 {
 523         const struct rte_flow_action_queue *act_q;
 524         uint16_t queue;
 525         const struct rte_flow_action *action;
 526         for (action = actions; action->type !=
 527                         RTE_FLOW_ACTION_TYPE_END; action++) {
 528                 switch (action->type) {
 529                 case RTE_FLOW_ACTION_TYPE_QUEUE:
 530                         act_q = action->conf;
 531                         queue = act_q->index;
 532                         if (queue >= dev->data->nb_rx_queues) {
 533                                 rte_flow_error_set(error, EINVAL,
 534                                                 RTE_FLOW_ERROR_TYPE_ACTION,
 535                                                 actions, "Invalid queue ID for"
 536                                                 " switch filter.");
 537                                 return -rte_errno;
 538                         }
 539                         break;
 540                 case RTE_FLOW_ACTION_TYPE_DROP:
 541                 case RTE_FLOW_ACTION_TYPE_VOID:
 542                         break;
 543                 default:
 544                         rte_flow_error_set(error, EINVAL,
 545                                            RTE_FLOW_ERROR_TYPE_ACTION, actions,
 546                                            "Invalid action.");
 547                         return -rte_errno;
 548                 }
 549         }
 550         return 0;
 551 }
 552
 553 static int
 554 ice_flow_validate(struct rte_eth_dev *dev,
 555                    const struct rte_flow_attr *attr,
 556                    const struct rte_flow_item pattern[],
 557                    const struct rte_flow_action actions[],
 558                    struct rte_flow_error *error)
 559 {
 560         uint64_t inset = 0;
 561         int ret = ICE_ERR_NOT_SUPPORTED;
 562
 563         if (!pattern) {
 564                 rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_NUM,
 565                                    NULL, "NULL pattern.");
 566                 return -rte_errno;
 567         }
 568
 569         if (!actions) {
 570                 rte_flow_error_set(error, EINVAL,
 571                                    RTE_FLOW_ERROR_TYPE_ACTION_NUM,
 572                                    NULL, "NULL action.");
 573                 return -rte_errno;
 574         }
 575
 576         if (!attr) {
 577                 rte_flow_error_set(error, EINVAL,
 578                                    RTE_FLOW_ERROR_TYPE_ATTR,
 579                                    NULL, "NULL attribute.");
 580                 return -rte_errno;
 581         }
 582
 583         ret = ice_flow_valid_attr(attr, error);
 584         if (ret)
 585                 return ret;
 586
 587         inset = ice_flow_valid_pattern(pattern, error);
 588         if (!inset)
 589                 return -rte_errno;
 590
 591         ret = ice_flow_valid_inset(pattern, inset, error);
 592         if (ret)
 593                 return ret;
 594
 595         ret = ice_flow_valid_action(dev, actions, error);
 596         if (ret)
 597                 return ret;
 598
 599         return 0;
 600 }
 601
 602 static struct rte_flow *
 603 ice_flow_create(struct rte_eth_dev *dev,
 604                  const struct rte_flow_attr *attr,
 605                  const struct rte_flow_item pattern[],
 606                  const struct rte_flow_action actions[],
 607                  struct rte_flow_error *error)
 608 {
 609         struct ice_pf *pf = ICE_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 610         struct rte_flow *flow = NULL;
 611         int ret;
 612
 613         flow = rte_zmalloc("ice_flow", sizeof(struct rte_flow), 0);
 614         if (!flow) {
 615                 rte_flow_error_set(error, ENOMEM,
 616                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 617                                    "Failed to allocate memory");
 618                 return flow;
 619         }
 620
 621         ret = ice_flow_validate(dev, attr, pattern, actions, error);
 622         if (ret < 0)
 623                 goto free_flow;
 624
 625         ret = ice_create_switch_filter(pf, pattern, actions, flow, error);
 626         if (ret)
 627                 goto free_flow;
 628
 629         TAILQ_INSERT_TAIL(&pf->flow_list, flow, node);
 630         return flow;
 631
 632 free_flow:
 633         rte_flow_error_set(error, -ret,
 634                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 635                            "Failed to create flow.");
 636         rte_free(flow);
 637         return NULL;
 638 }
 639
 640 static int
 641 ice_flow_destroy(struct rte_eth_dev *dev,
 642                  struct rte_flow *flow,
 643                  struct rte_flow_error *error)
 644 {
 645         struct ice_pf *pf = ICE_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 646         int ret = 0;
 647
 648         ret = ice_destroy_switch_filter(pf, flow, error);
 649
 650         if (!ret) {
 651                 TAILQ_REMOVE(&pf->flow_list, flow, node);
 652                 rte_free(flow);
 653         } else {
 654                 rte_flow_error_set(error, -ret,
 655                                    RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 656                                    "Failed to destroy flow.");
 657         }
 658
 659         return ret;
 660 }
 661
 662 static int
 663 ice_flow_flush(struct rte_eth_dev *dev,
 664                struct rte_flow_error *error)
 665 {
 666         struct ice_pf *pf = ICE_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 667         struct rte_flow *p_flow;
 668         void *temp;
 669         int ret = 0;
 670
 671         TAILQ_FOREACH_SAFE(p_flow, &pf->flow_list, node, temp) {
 672                 ret = ice_flow_destroy(dev, p_flow, error);
 673                 if (ret) {
 674                         rte_flow_error_set(error, -ret,
 675                                            RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
 676                                            "Failed to flush SW flows.");
 677                         return -rte_errno;
 678                 }
 679         }
 680
 681         return ret;
 682 }