1 /* SPDX-License-Identifier: BSD-3-Clause 2 * 3 * Copyright(c) 2019-2020 Xilinx, Inc. 4 * Copyright(c) 2017-2019 Solarflare Communications Inc. 5 * 6 * This software was jointly developed between OKTET Labs (under contract 7 * for Solarflare) and Solarflare Communications, Inc. 8 */ 9 10 #include <rte_byteorder.h> 11 #include <rte_tailq.h> 12 #include <rte_common.h> 13 #include <rte_ethdev_driver.h> 14 #include <rte_ether.h> 15 #include <rte_flow.h> 16 #include <rte_flow_driver.h> 17 18 #include "efx.h" 19 20 #include "sfc.h" 21 #include "sfc_debug.h" 22 #include "sfc_rx.h" 23 #include "sfc_filter.h" 24 #include "sfc_flow.h" 25 #include "sfc_log.h" 26 #include "sfc_dp_rx.h" 27 28 struct sfc_flow_ops_by_spec { 29 sfc_flow_parse_cb_t *parse; 30 sfc_flow_insert_cb_t *insert; 31 sfc_flow_remove_cb_t *remove; 32 }; 33 34 static sfc_flow_parse_cb_t sfc_flow_parse_rte_to_filter; 35 static sfc_flow_insert_cb_t sfc_flow_filter_insert; 36 static sfc_flow_remove_cb_t sfc_flow_filter_remove; 37 38 static const struct sfc_flow_ops_by_spec sfc_flow_ops_filter = { 39 .parse = sfc_flow_parse_rte_to_filter, 40 .insert = sfc_flow_filter_insert, 41 .remove = sfc_flow_filter_remove, 42 }; 43 44 static const struct sfc_flow_ops_by_spec * 45 sfc_flow_get_ops_by_spec(struct rte_flow *flow) 46 { 47 struct sfc_flow_spec *spec = &flow->spec; 48 const struct sfc_flow_ops_by_spec *ops = NULL; 49 50 switch (spec->type) { 51 case SFC_FLOW_SPEC_FILTER: 52 ops = &sfc_flow_ops_filter; 53 break; 54 default: 55 SFC_ASSERT(false); 56 break; 57 } 58 59 return ops; 60 } 61 62 /* 63 * Currently, filter-based (VNIC) flow API is implemented in such a manner 64 * that each flow rule is converted to one or more hardware filters. 65 * All elements of flow rule (attributes, pattern items, actions) 66 * correspond to one or more fields in the efx_filter_spec_s structure 67 * that is responsible for the hardware filter. 68 * If some required field is unset in the flow rule, then a handful 69 * of filter copies will be created to cover all possible values 70 * of such a field. 71 */ 72 73 static sfc_flow_item_parse sfc_flow_parse_void; 74 static sfc_flow_item_parse sfc_flow_parse_eth; 75 static sfc_flow_item_parse sfc_flow_parse_vlan; 76 static sfc_flow_item_parse sfc_flow_parse_ipv4; 77 static sfc_flow_item_parse sfc_flow_parse_ipv6; 78 static sfc_flow_item_parse sfc_flow_parse_tcp; 79 static sfc_flow_item_parse sfc_flow_parse_udp; 80 static sfc_flow_item_parse sfc_flow_parse_vxlan; 81 static sfc_flow_item_parse sfc_flow_parse_geneve; 82 static sfc_flow_item_parse sfc_flow_parse_nvgre; 83 84 typedef int (sfc_flow_spec_set_vals)(struct sfc_flow_spec *spec, 85 unsigned int filters_count_for_one_val, 86 struct rte_flow_error *error); 87 88 typedef boolean_t (sfc_flow_spec_check)(efx_filter_match_flags_t match, 89 efx_filter_spec_t *spec, 90 struct sfc_filter *filter); 91 92 struct sfc_flow_copy_flag { 93 /* EFX filter specification match flag */ 94 efx_filter_match_flags_t flag; 95 /* Number of values of corresponding field */ 96 unsigned int vals_count; 97 /* Function to set values in specifications */ 98 sfc_flow_spec_set_vals *set_vals; 99 /* 100 * Function to check that the specification is suitable 101 * for adding this match flag 102 */ 103 sfc_flow_spec_check *spec_check; 104 }; 105 106 static sfc_flow_spec_set_vals sfc_flow_set_unknown_dst_flags; 107 static sfc_flow_spec_check sfc_flow_check_unknown_dst_flags; 108 static sfc_flow_spec_set_vals sfc_flow_set_ethertypes; 109 static sfc_flow_spec_set_vals sfc_flow_set_ifrm_unknown_dst_flags; 110 static sfc_flow_spec_check sfc_flow_check_ifrm_unknown_dst_flags; 111 static sfc_flow_spec_set_vals sfc_flow_set_outer_vid_flag; 112 static sfc_flow_spec_check sfc_flow_check_outer_vid_flag; 113 114 static boolean_t 115 sfc_flow_is_zero(const uint8_t *buf, unsigned int size) 116 { 117 uint8_t sum = 0; 118 unsigned int i; 119 120 for (i = 0; i < size; i++) 121 sum |= buf[i]; 122 123 return (sum == 0) ? B_TRUE : B_FALSE; 124 } 125 126 /* 127 * Validate item and prepare structures spec and mask for parsing 128 */ 129 int 130 sfc_flow_parse_init(const struct rte_flow_item *item, 131 const void **spec_ptr, 132 const void **mask_ptr, 133 const void *supp_mask, 134 const void *def_mask, 135 unsigned int size, 136 struct rte_flow_error *error) 137 { 138 const uint8_t *spec; 139 const uint8_t *mask; 140 const uint8_t *last; 141 uint8_t supp; 142 unsigned int i; 143 144 if (item == NULL) { 145 rte_flow_error_set(error, EINVAL, 146 RTE_FLOW_ERROR_TYPE_ITEM, NULL, 147 "NULL item"); 148 return -rte_errno; 149 } 150 151 if ((item->last != NULL || item->mask != NULL) && item->spec == NULL) { 152 rte_flow_error_set(error, EINVAL, 153 RTE_FLOW_ERROR_TYPE_ITEM, item, 154 "Mask or last is set without spec"); 155 return -rte_errno; 156 } 157 158 /* 159 * If "mask" is not set, default mask is used, 160 * but if default mask is NULL, "mask" should be set 161 */ 162 if (item->mask == NULL) { 163 if (def_mask == NULL) { 164 rte_flow_error_set(error, EINVAL, 165 RTE_FLOW_ERROR_TYPE_ITEM, NULL, 166 "Mask should be specified"); 167 return -rte_errno; 168 } 169 170 mask = def_mask; 171 } else { 172 mask = item->mask; 173 } 174 175 spec = item->spec; 176 last = item->last; 177 178 if (spec == NULL) 179 goto exit; 180 181 /* 182 * If field values in "last" are either 0 or equal to the corresponding 183 * values in "spec" then they are ignored 184 */ 185 if (last != NULL && 186 !sfc_flow_is_zero(last, size) && 187 memcmp(last, spec, size) != 0) { 188 rte_flow_error_set(error, ENOTSUP, 189 RTE_FLOW_ERROR_TYPE_ITEM, item, 190 "Ranging is not supported"); 191 return -rte_errno; 192 } 193 194 if (supp_mask == NULL) { 195 rte_flow_error_set(error, EINVAL, 196 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 197 "Supported mask for item should be specified"); 198 return -rte_errno; 199 } 200 201 /* Check that mask does not ask for more match than supp_mask */ 202 for (i = 0; i < size; i++) { 203 supp = ((const uint8_t *)supp_mask)[i]; 204 205 if (~supp & mask[i]) { 206 rte_flow_error_set(error, ENOTSUP, 207 RTE_FLOW_ERROR_TYPE_ITEM, item, 208 "Item's field is not supported"); 209 return -rte_errno; 210 } 211 } 212 213 exit: 214 *spec_ptr = spec; 215 *mask_ptr = mask; 216 return 0; 217 } 218 219 /* 220 * Protocol parsers. 221 * Masking is not supported, so masks in items should be either 222 * full or empty (zeroed) and set only for supported fields which 223 * are specified in the supp_mask. 224 */ 225 226 static int 227 sfc_flow_parse_void(__rte_unused const struct rte_flow_item *item, 228 __rte_unused struct sfc_flow_parse_ctx *parse_ctx, 229 __rte_unused struct rte_flow_error *error) 230 { 231 return 0; 232 } 233 234 /** 235 * Convert Ethernet item to EFX filter specification. 236 * 237 * @param item[in] 238 * Item specification. Outer frame specification may only comprise 239 * source/destination addresses and Ethertype field. 240 * Inner frame specification may contain destination address only. 241 * There is support for individual/group mask as well as for empty and full. 242 * If the mask is NULL, default mask will be used. Ranging is not supported. 243 * @param efx_spec[in, out] 244 * EFX filter specification to update. 245 * @param[out] error 246 * Perform verbose error reporting if not NULL. 247 */ 248 static int 249 sfc_flow_parse_eth(const struct rte_flow_item *item, 250 struct sfc_flow_parse_ctx *parse_ctx, 251 struct rte_flow_error *error) 252 { 253 int rc; 254 efx_filter_spec_t *efx_spec = parse_ctx->filter; 255 const struct rte_flow_item_eth *spec = NULL; 256 const struct rte_flow_item_eth *mask = NULL; 257 const struct rte_flow_item_eth supp_mask = { 258 .dst.addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, 259 .src.addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, 260 .type = 0xffff, 261 }; 262 const struct rte_flow_item_eth ifrm_supp_mask = { 263 .dst.addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, 264 }; 265 const uint8_t ig_mask[EFX_MAC_ADDR_LEN] = { 266 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 267 }; 268 const struct rte_flow_item_eth *supp_mask_p; 269 const struct rte_flow_item_eth *def_mask_p; 270 uint8_t *loc_mac = NULL; 271 boolean_t is_ifrm = (efx_spec->efs_encap_type != 272 EFX_TUNNEL_PROTOCOL_NONE); 273 274 if (is_ifrm) { 275 supp_mask_p = &ifrm_supp_mask; 276 def_mask_p = &ifrm_supp_mask; 277 loc_mac = efx_spec->efs_ifrm_loc_mac; 278 } else { 279 supp_mask_p = &supp_mask; 280 def_mask_p = &rte_flow_item_eth_mask; 281 loc_mac = efx_spec->efs_loc_mac; 282 } 283 284 rc = sfc_flow_parse_init(item, 285 (const void **)&spec, 286 (const void **)&mask, 287 supp_mask_p, def_mask_p, 288 sizeof(struct rte_flow_item_eth), 289 error); 290 if (rc != 0) 291 return rc; 292 293 /* If "spec" is not set, could be any Ethernet */ 294 if (spec == NULL) 295 return 0; 296 297 if (rte_is_same_ether_addr(&mask->dst, &supp_mask.dst)) { 298 efx_spec->efs_match_flags |= is_ifrm ? 299 EFX_FILTER_MATCH_IFRM_LOC_MAC : 300 EFX_FILTER_MATCH_LOC_MAC; 301 rte_memcpy(loc_mac, spec->dst.addr_bytes, 302 EFX_MAC_ADDR_LEN); 303 } else if (memcmp(mask->dst.addr_bytes, ig_mask, 304 EFX_MAC_ADDR_LEN) == 0) { 305 if (rte_is_unicast_ether_addr(&spec->dst)) 306 efx_spec->efs_match_flags |= is_ifrm ? 307 EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST : 308 EFX_FILTER_MATCH_UNKNOWN_UCAST_DST; 309 else 310 efx_spec->efs_match_flags |= is_ifrm ? 311 EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST : 312 EFX_FILTER_MATCH_UNKNOWN_MCAST_DST; 313 } else if (!rte_is_zero_ether_addr(&mask->dst)) { 314 goto fail_bad_mask; 315 } 316 317 /* 318 * ifrm_supp_mask ensures that the source address and 319 * ethertype masks are equal to zero in inner frame, 320 * so these fields are filled in only for the outer frame 321 */ 322 if (rte_is_same_ether_addr(&mask->src, &supp_mask.src)) { 323 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_MAC; 324 rte_memcpy(efx_spec->efs_rem_mac, spec->src.addr_bytes, 325 EFX_MAC_ADDR_LEN); 326 } else if (!rte_is_zero_ether_addr(&mask->src)) { 327 goto fail_bad_mask; 328 } 329 330 /* 331 * Ether type is in big-endian byte order in item and 332 * in little-endian in efx_spec, so byte swap is used 333 */ 334 if (mask->type == supp_mask.type) { 335 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE; 336 efx_spec->efs_ether_type = rte_bswap16(spec->type); 337 } else if (mask->type != 0) { 338 goto fail_bad_mask; 339 } 340 341 return 0; 342 343 fail_bad_mask: 344 rte_flow_error_set(error, EINVAL, 345 RTE_FLOW_ERROR_TYPE_ITEM, item, 346 "Bad mask in the ETH pattern item"); 347 return -rte_errno; 348 } 349 350 /** 351 * Convert VLAN item to EFX filter specification. 352 * 353 * @param item[in] 354 * Item specification. Only VID field is supported. 355 * The mask can not be NULL. Ranging is not supported. 356 * @param efx_spec[in, out] 357 * EFX filter specification to update. 358 * @param[out] error 359 * Perform verbose error reporting if not NULL. 360 */ 361 static int 362 sfc_flow_parse_vlan(const struct rte_flow_item *item, 363 struct sfc_flow_parse_ctx *parse_ctx, 364 struct rte_flow_error *error) 365 { 366 int rc; 367 uint16_t vid; 368 efx_filter_spec_t *efx_spec = parse_ctx->filter; 369 const struct rte_flow_item_vlan *spec = NULL; 370 const struct rte_flow_item_vlan *mask = NULL; 371 const struct rte_flow_item_vlan supp_mask = { 372 .tci = rte_cpu_to_be_16(ETH_VLAN_ID_MAX), 373 .inner_type = RTE_BE16(0xffff), 374 }; 375 376 rc = sfc_flow_parse_init(item, 377 (const void **)&spec, 378 (const void **)&mask, 379 &supp_mask, 380 NULL, 381 sizeof(struct rte_flow_item_vlan), 382 error); 383 if (rc != 0) 384 return rc; 385 386 /* 387 * VID is in big-endian byte order in item and 388 * in little-endian in efx_spec, so byte swap is used. 389 * If two VLAN items are included, the first matches 390 * the outer tag and the next matches the inner tag. 391 */ 392 if (mask->tci == supp_mask.tci) { 393 /* Apply mask to keep VID only */ 394 vid = rte_bswap16(spec->tci & mask->tci); 395 396 if (!(efx_spec->efs_match_flags & 397 EFX_FILTER_MATCH_OUTER_VID)) { 398 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_OUTER_VID; 399 efx_spec->efs_outer_vid = vid; 400 } else if (!(efx_spec->efs_match_flags & 401 EFX_FILTER_MATCH_INNER_VID)) { 402 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_INNER_VID; 403 efx_spec->efs_inner_vid = vid; 404 } else { 405 rte_flow_error_set(error, EINVAL, 406 RTE_FLOW_ERROR_TYPE_ITEM, item, 407 "More than two VLAN items"); 408 return -rte_errno; 409 } 410 } else { 411 rte_flow_error_set(error, EINVAL, 412 RTE_FLOW_ERROR_TYPE_ITEM, item, 413 "VLAN ID in TCI match is required"); 414 return -rte_errno; 415 } 416 417 if (efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE) { 418 rte_flow_error_set(error, EINVAL, 419 RTE_FLOW_ERROR_TYPE_ITEM, item, 420 "VLAN TPID matching is not supported"); 421 return -rte_errno; 422 } 423 if (mask->inner_type == supp_mask.inner_type) { 424 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE; 425 efx_spec->efs_ether_type = rte_bswap16(spec->inner_type); 426 } else if (mask->inner_type) { 427 rte_flow_error_set(error, EINVAL, 428 RTE_FLOW_ERROR_TYPE_ITEM, item, 429 "Bad mask for VLAN inner_type"); 430 return -rte_errno; 431 } 432 433 return 0; 434 } 435 436 /** 437 * Convert IPv4 item to EFX filter specification. 438 * 439 * @param item[in] 440 * Item specification. Only source and destination addresses and 441 * protocol fields are supported. If the mask is NULL, default 442 * mask will be used. Ranging is not supported. 443 * @param efx_spec[in, out] 444 * EFX filter specification to update. 445 * @param[out] error 446 * Perform verbose error reporting if not NULL. 447 */ 448 static int 449 sfc_flow_parse_ipv4(const struct rte_flow_item *item, 450 struct sfc_flow_parse_ctx *parse_ctx, 451 struct rte_flow_error *error) 452 { 453 int rc; 454 efx_filter_spec_t *efx_spec = parse_ctx->filter; 455 const struct rte_flow_item_ipv4 *spec = NULL; 456 const struct rte_flow_item_ipv4 *mask = NULL; 457 const uint16_t ether_type_ipv4 = rte_cpu_to_le_16(EFX_ETHER_TYPE_IPV4); 458 const struct rte_flow_item_ipv4 supp_mask = { 459 .hdr = { 460 .src_addr = 0xffffffff, 461 .dst_addr = 0xffffffff, 462 .next_proto_id = 0xff, 463 } 464 }; 465 466 rc = sfc_flow_parse_init(item, 467 (const void **)&spec, 468 (const void **)&mask, 469 &supp_mask, 470 &rte_flow_item_ipv4_mask, 471 sizeof(struct rte_flow_item_ipv4), 472 error); 473 if (rc != 0) 474 return rc; 475 476 /* 477 * Filtering by IPv4 source and destination addresses requires 478 * the appropriate ETHER_TYPE in hardware filters 479 */ 480 if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE)) { 481 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE; 482 efx_spec->efs_ether_type = ether_type_ipv4; 483 } else if (efx_spec->efs_ether_type != ether_type_ipv4) { 484 rte_flow_error_set(error, EINVAL, 485 RTE_FLOW_ERROR_TYPE_ITEM, item, 486 "Ethertype in pattern with IPV4 item should be appropriate"); 487 return -rte_errno; 488 } 489 490 if (spec == NULL) 491 return 0; 492 493 /* 494 * IPv4 addresses are in big-endian byte order in item and in 495 * efx_spec 496 */ 497 if (mask->hdr.src_addr == supp_mask.hdr.src_addr) { 498 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_HOST; 499 efx_spec->efs_rem_host.eo_u32[0] = spec->hdr.src_addr; 500 } else if (mask->hdr.src_addr != 0) { 501 goto fail_bad_mask; 502 } 503 504 if (mask->hdr.dst_addr == supp_mask.hdr.dst_addr) { 505 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_HOST; 506 efx_spec->efs_loc_host.eo_u32[0] = spec->hdr.dst_addr; 507 } else if (mask->hdr.dst_addr != 0) { 508 goto fail_bad_mask; 509 } 510 511 if (mask->hdr.next_proto_id == supp_mask.hdr.next_proto_id) { 512 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO; 513 efx_spec->efs_ip_proto = spec->hdr.next_proto_id; 514 } else if (mask->hdr.next_proto_id != 0) { 515 goto fail_bad_mask; 516 } 517 518 return 0; 519 520 fail_bad_mask: 521 rte_flow_error_set(error, EINVAL, 522 RTE_FLOW_ERROR_TYPE_ITEM, item, 523 "Bad mask in the IPV4 pattern item"); 524 return -rte_errno; 525 } 526 527 /** 528 * Convert IPv6 item to EFX filter specification. 529 * 530 * @param item[in] 531 * Item specification. Only source and destination addresses and 532 * next header fields are supported. If the mask is NULL, default 533 * mask will be used. Ranging is not supported. 534 * @param efx_spec[in, out] 535 * EFX filter specification to update. 536 * @param[out] error 537 * Perform verbose error reporting if not NULL. 538 */ 539 static int 540 sfc_flow_parse_ipv6(const struct rte_flow_item *item, 541 struct sfc_flow_parse_ctx *parse_ctx, 542 struct rte_flow_error *error) 543 { 544 int rc; 545 efx_filter_spec_t *efx_spec = parse_ctx->filter; 546 const struct rte_flow_item_ipv6 *spec = NULL; 547 const struct rte_flow_item_ipv6 *mask = NULL; 548 const uint16_t ether_type_ipv6 = rte_cpu_to_le_16(EFX_ETHER_TYPE_IPV6); 549 const struct rte_flow_item_ipv6 supp_mask = { 550 .hdr = { 551 .src_addr = { 0xff, 0xff, 0xff, 0xff, 552 0xff, 0xff, 0xff, 0xff, 553 0xff, 0xff, 0xff, 0xff, 554 0xff, 0xff, 0xff, 0xff }, 555 .dst_addr = { 0xff, 0xff, 0xff, 0xff, 556 0xff, 0xff, 0xff, 0xff, 557 0xff, 0xff, 0xff, 0xff, 558 0xff, 0xff, 0xff, 0xff }, 559 .proto = 0xff, 560 } 561 }; 562 563 rc = sfc_flow_parse_init(item, 564 (const void **)&spec, 565 (const void **)&mask, 566 &supp_mask, 567 &rte_flow_item_ipv6_mask, 568 sizeof(struct rte_flow_item_ipv6), 569 error); 570 if (rc != 0) 571 return rc; 572 573 /* 574 * Filtering by IPv6 source and destination addresses requires 575 * the appropriate ETHER_TYPE in hardware filters 576 */ 577 if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE)) { 578 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE; 579 efx_spec->efs_ether_type = ether_type_ipv6; 580 } else if (efx_spec->efs_ether_type != ether_type_ipv6) { 581 rte_flow_error_set(error, EINVAL, 582 RTE_FLOW_ERROR_TYPE_ITEM, item, 583 "Ethertype in pattern with IPV6 item should be appropriate"); 584 return -rte_errno; 585 } 586 587 if (spec == NULL) 588 return 0; 589 590 /* 591 * IPv6 addresses are in big-endian byte order in item and in 592 * efx_spec 593 */ 594 if (memcmp(mask->hdr.src_addr, supp_mask.hdr.src_addr, 595 sizeof(mask->hdr.src_addr)) == 0) { 596 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_HOST; 597 598 RTE_BUILD_BUG_ON(sizeof(efx_spec->efs_rem_host) != 599 sizeof(spec->hdr.src_addr)); 600 rte_memcpy(&efx_spec->efs_rem_host, spec->hdr.src_addr, 601 sizeof(efx_spec->efs_rem_host)); 602 } else if (!sfc_flow_is_zero(mask->hdr.src_addr, 603 sizeof(mask->hdr.src_addr))) { 604 goto fail_bad_mask; 605 } 606 607 if (memcmp(mask->hdr.dst_addr, supp_mask.hdr.dst_addr, 608 sizeof(mask->hdr.dst_addr)) == 0) { 609 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_HOST; 610 611 RTE_BUILD_BUG_ON(sizeof(efx_spec->efs_loc_host) != 612 sizeof(spec->hdr.dst_addr)); 613 rte_memcpy(&efx_spec->efs_loc_host, spec->hdr.dst_addr, 614 sizeof(efx_spec->efs_loc_host)); 615 } else if (!sfc_flow_is_zero(mask->hdr.dst_addr, 616 sizeof(mask->hdr.dst_addr))) { 617 goto fail_bad_mask; 618 } 619 620 if (mask->hdr.proto == supp_mask.hdr.proto) { 621 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO; 622 efx_spec->efs_ip_proto = spec->hdr.proto; 623 } else if (mask->hdr.proto != 0) { 624 goto fail_bad_mask; 625 } 626 627 return 0; 628 629 fail_bad_mask: 630 rte_flow_error_set(error, EINVAL, 631 RTE_FLOW_ERROR_TYPE_ITEM, item, 632 "Bad mask in the IPV6 pattern item"); 633 return -rte_errno; 634 } 635 636 /** 637 * Convert TCP item to EFX filter specification. 638 * 639 * @param item[in] 640 * Item specification. Only source and destination ports fields 641 * are supported. If the mask is NULL, default mask will be used. 642 * Ranging is not supported. 643 * @param efx_spec[in, out] 644 * EFX filter specification to update. 645 * @param[out] error 646 * Perform verbose error reporting if not NULL. 647 */ 648 static int 649 sfc_flow_parse_tcp(const struct rte_flow_item *item, 650 struct sfc_flow_parse_ctx *parse_ctx, 651 struct rte_flow_error *error) 652 { 653 int rc; 654 efx_filter_spec_t *efx_spec = parse_ctx->filter; 655 const struct rte_flow_item_tcp *spec = NULL; 656 const struct rte_flow_item_tcp *mask = NULL; 657 const struct rte_flow_item_tcp supp_mask = { 658 .hdr = { 659 .src_port = 0xffff, 660 .dst_port = 0xffff, 661 } 662 }; 663 664 rc = sfc_flow_parse_init(item, 665 (const void **)&spec, 666 (const void **)&mask, 667 &supp_mask, 668 &rte_flow_item_tcp_mask, 669 sizeof(struct rte_flow_item_tcp), 670 error); 671 if (rc != 0) 672 return rc; 673 674 /* 675 * Filtering by TCP source and destination ports requires 676 * the appropriate IP_PROTO in hardware filters 677 */ 678 if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_IP_PROTO)) { 679 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO; 680 efx_spec->efs_ip_proto = EFX_IPPROTO_TCP; 681 } else if (efx_spec->efs_ip_proto != EFX_IPPROTO_TCP) { 682 rte_flow_error_set(error, EINVAL, 683 RTE_FLOW_ERROR_TYPE_ITEM, item, 684 "IP proto in pattern with TCP item should be appropriate"); 685 return -rte_errno; 686 } 687 688 if (spec == NULL) 689 return 0; 690 691 /* 692 * Source and destination ports are in big-endian byte order in item and 693 * in little-endian in efx_spec, so byte swap is used 694 */ 695 if (mask->hdr.src_port == supp_mask.hdr.src_port) { 696 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_PORT; 697 efx_spec->efs_rem_port = rte_bswap16(spec->hdr.src_port); 698 } else if (mask->hdr.src_port != 0) { 699 goto fail_bad_mask; 700 } 701 702 if (mask->hdr.dst_port == supp_mask.hdr.dst_port) { 703 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_PORT; 704 efx_spec->efs_loc_port = rte_bswap16(spec->hdr.dst_port); 705 } else if (mask->hdr.dst_port != 0) { 706 goto fail_bad_mask; 707 } 708 709 return 0; 710 711 fail_bad_mask: 712 rte_flow_error_set(error, EINVAL, 713 RTE_FLOW_ERROR_TYPE_ITEM, item, 714 "Bad mask in the TCP pattern item"); 715 return -rte_errno; 716 } 717 718 /** 719 * Convert UDP item to EFX filter specification. 720 * 721 * @param item[in] 722 * Item specification. Only source and destination ports fields 723 * are supported. If the mask is NULL, default mask will be used. 724 * Ranging is not supported. 725 * @param efx_spec[in, out] 726 * EFX filter specification to update. 727 * @param[out] error 728 * Perform verbose error reporting if not NULL. 729 */ 730 static int 731 sfc_flow_parse_udp(const struct rte_flow_item *item, 732 struct sfc_flow_parse_ctx *parse_ctx, 733 struct rte_flow_error *error) 734 { 735 int rc; 736 efx_filter_spec_t *efx_spec = parse_ctx->filter; 737 const struct rte_flow_item_udp *spec = NULL; 738 const struct rte_flow_item_udp *mask = NULL; 739 const struct rte_flow_item_udp supp_mask = { 740 .hdr = { 741 .src_port = 0xffff, 742 .dst_port = 0xffff, 743 } 744 }; 745 746 rc = sfc_flow_parse_init(item, 747 (const void **)&spec, 748 (const void **)&mask, 749 &supp_mask, 750 &rte_flow_item_udp_mask, 751 sizeof(struct rte_flow_item_udp), 752 error); 753 if (rc != 0) 754 return rc; 755 756 /* 757 * Filtering by UDP source and destination ports requires 758 * the appropriate IP_PROTO in hardware filters 759 */ 760 if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_IP_PROTO)) { 761 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO; 762 efx_spec->efs_ip_proto = EFX_IPPROTO_UDP; 763 } else if (efx_spec->efs_ip_proto != EFX_IPPROTO_UDP) { 764 rte_flow_error_set(error, EINVAL, 765 RTE_FLOW_ERROR_TYPE_ITEM, item, 766 "IP proto in pattern with UDP item should be appropriate"); 767 return -rte_errno; 768 } 769 770 if (spec == NULL) 771 return 0; 772 773 /* 774 * Source and destination ports are in big-endian byte order in item and 775 * in little-endian in efx_spec, so byte swap is used 776 */ 777 if (mask->hdr.src_port == supp_mask.hdr.src_port) { 778 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_PORT; 779 efx_spec->efs_rem_port = rte_bswap16(spec->hdr.src_port); 780 } else if (mask->hdr.src_port != 0) { 781 goto fail_bad_mask; 782 } 783 784 if (mask->hdr.dst_port == supp_mask.hdr.dst_port) { 785 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_PORT; 786 efx_spec->efs_loc_port = rte_bswap16(spec->hdr.dst_port); 787 } else if (mask->hdr.dst_port != 0) { 788 goto fail_bad_mask; 789 } 790 791 return 0; 792 793 fail_bad_mask: 794 rte_flow_error_set(error, EINVAL, 795 RTE_FLOW_ERROR_TYPE_ITEM, item, 796 "Bad mask in the UDP pattern item"); 797 return -rte_errno; 798 } 799 800 /* 801 * Filters for encapsulated packets match based on the EtherType and IP 802 * protocol in the outer frame. 803 */ 804 static int 805 sfc_flow_set_match_flags_for_encap_pkts(const struct rte_flow_item *item, 806 efx_filter_spec_t *efx_spec, 807 uint8_t ip_proto, 808 struct rte_flow_error *error) 809 { 810 if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_IP_PROTO)) { 811 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_IP_PROTO; 812 efx_spec->efs_ip_proto = ip_proto; 813 } else if (efx_spec->efs_ip_proto != ip_proto) { 814 switch (ip_proto) { 815 case EFX_IPPROTO_UDP: 816 rte_flow_error_set(error, EINVAL, 817 RTE_FLOW_ERROR_TYPE_ITEM, item, 818 "Outer IP header protocol must be UDP " 819 "in VxLAN/GENEVE pattern"); 820 return -rte_errno; 821 822 case EFX_IPPROTO_GRE: 823 rte_flow_error_set(error, EINVAL, 824 RTE_FLOW_ERROR_TYPE_ITEM, item, 825 "Outer IP header protocol must be GRE " 826 "in NVGRE pattern"); 827 return -rte_errno; 828 829 default: 830 rte_flow_error_set(error, EINVAL, 831 RTE_FLOW_ERROR_TYPE_ITEM, item, 832 "Only VxLAN/GENEVE/NVGRE tunneling patterns " 833 "are supported"); 834 return -rte_errno; 835 } 836 } 837 838 if (efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE && 839 efx_spec->efs_ether_type != EFX_ETHER_TYPE_IPV4 && 840 efx_spec->efs_ether_type != EFX_ETHER_TYPE_IPV6) { 841 rte_flow_error_set(error, EINVAL, 842 RTE_FLOW_ERROR_TYPE_ITEM, item, 843 "Outer frame EtherType in pattern with tunneling " 844 "must be IPv4 or IPv6"); 845 return -rte_errno; 846 } 847 848 return 0; 849 } 850 851 static int 852 sfc_flow_set_efx_spec_vni_or_vsid(efx_filter_spec_t *efx_spec, 853 const uint8_t *vni_or_vsid_val, 854 const uint8_t *vni_or_vsid_mask, 855 const struct rte_flow_item *item, 856 struct rte_flow_error *error) 857 { 858 const uint8_t vni_or_vsid_full_mask[EFX_VNI_OR_VSID_LEN] = { 859 0xff, 0xff, 0xff 860 }; 861 862 if (memcmp(vni_or_vsid_mask, vni_or_vsid_full_mask, 863 EFX_VNI_OR_VSID_LEN) == 0) { 864 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_VNI_OR_VSID; 865 rte_memcpy(efx_spec->efs_vni_or_vsid, vni_or_vsid_val, 866 EFX_VNI_OR_VSID_LEN); 867 } else if (!sfc_flow_is_zero(vni_or_vsid_mask, EFX_VNI_OR_VSID_LEN)) { 868 rte_flow_error_set(error, EINVAL, 869 RTE_FLOW_ERROR_TYPE_ITEM, item, 870 "Unsupported VNI/VSID mask"); 871 return -rte_errno; 872 } 873 874 return 0; 875 } 876 877 /** 878 * Convert VXLAN item to EFX filter specification. 879 * 880 * @param item[in] 881 * Item specification. Only VXLAN network identifier field is supported. 882 * If the mask is NULL, default mask will be used. 883 * Ranging is not supported. 884 * @param efx_spec[in, out] 885 * EFX filter specification to update. 886 * @param[out] error 887 * Perform verbose error reporting if not NULL. 888 */ 889 static int 890 sfc_flow_parse_vxlan(const struct rte_flow_item *item, 891 struct sfc_flow_parse_ctx *parse_ctx, 892 struct rte_flow_error *error) 893 { 894 int rc; 895 efx_filter_spec_t *efx_spec = parse_ctx->filter; 896 const struct rte_flow_item_vxlan *spec = NULL; 897 const struct rte_flow_item_vxlan *mask = NULL; 898 const struct rte_flow_item_vxlan supp_mask = { 899 .vni = { 0xff, 0xff, 0xff } 900 }; 901 902 rc = sfc_flow_parse_init(item, 903 (const void **)&spec, 904 (const void **)&mask, 905 &supp_mask, 906 &rte_flow_item_vxlan_mask, 907 sizeof(struct rte_flow_item_vxlan), 908 error); 909 if (rc != 0) 910 return rc; 911 912 rc = sfc_flow_set_match_flags_for_encap_pkts(item, efx_spec, 913 EFX_IPPROTO_UDP, error); 914 if (rc != 0) 915 return rc; 916 917 efx_spec->efs_encap_type = EFX_TUNNEL_PROTOCOL_VXLAN; 918 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ENCAP_TYPE; 919 920 if (spec == NULL) 921 return 0; 922 923 rc = sfc_flow_set_efx_spec_vni_or_vsid(efx_spec, spec->vni, 924 mask->vni, item, error); 925 926 return rc; 927 } 928 929 /** 930 * Convert GENEVE item to EFX filter specification. 931 * 932 * @param item[in] 933 * Item specification. Only Virtual Network Identifier and protocol type 934 * fields are supported. But protocol type can be only Ethernet (0x6558). 935 * If the mask is NULL, default mask will be used. 936 * Ranging is not supported. 937 * @param efx_spec[in, out] 938 * EFX filter specification to update. 939 * @param[out] error 940 * Perform verbose error reporting if not NULL. 941 */ 942 static int 943 sfc_flow_parse_geneve(const struct rte_flow_item *item, 944 struct sfc_flow_parse_ctx *parse_ctx, 945 struct rte_flow_error *error) 946 { 947 int rc; 948 efx_filter_spec_t *efx_spec = parse_ctx->filter; 949 const struct rte_flow_item_geneve *spec = NULL; 950 const struct rte_flow_item_geneve *mask = NULL; 951 const struct rte_flow_item_geneve supp_mask = { 952 .protocol = RTE_BE16(0xffff), 953 .vni = { 0xff, 0xff, 0xff } 954 }; 955 956 rc = sfc_flow_parse_init(item, 957 (const void **)&spec, 958 (const void **)&mask, 959 &supp_mask, 960 &rte_flow_item_geneve_mask, 961 sizeof(struct rte_flow_item_geneve), 962 error); 963 if (rc != 0) 964 return rc; 965 966 rc = sfc_flow_set_match_flags_for_encap_pkts(item, efx_spec, 967 EFX_IPPROTO_UDP, error); 968 if (rc != 0) 969 return rc; 970 971 efx_spec->efs_encap_type = EFX_TUNNEL_PROTOCOL_GENEVE; 972 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ENCAP_TYPE; 973 974 if (spec == NULL) 975 return 0; 976 977 if (mask->protocol == supp_mask.protocol) { 978 if (spec->protocol != rte_cpu_to_be_16(RTE_ETHER_TYPE_TEB)) { 979 rte_flow_error_set(error, EINVAL, 980 RTE_FLOW_ERROR_TYPE_ITEM, item, 981 "GENEVE encap. protocol must be Ethernet " 982 "(0x6558) in the GENEVE pattern item"); 983 return -rte_errno; 984 } 985 } else if (mask->protocol != 0) { 986 rte_flow_error_set(error, EINVAL, 987 RTE_FLOW_ERROR_TYPE_ITEM, item, 988 "Unsupported mask for GENEVE encap. protocol"); 989 return -rte_errno; 990 } 991 992 rc = sfc_flow_set_efx_spec_vni_or_vsid(efx_spec, spec->vni, 993 mask->vni, item, error); 994 995 return rc; 996 } 997 998 /** 999 * Convert NVGRE item to EFX filter specification. 1000 * 1001 * @param item[in] 1002 * Item specification. Only virtual subnet ID field is supported. 1003 * If the mask is NULL, default mask will be used. 1004 * Ranging is not supported. 1005 * @param efx_spec[in, out] 1006 * EFX filter specification to update. 1007 * @param[out] error 1008 * Perform verbose error reporting if not NULL. 1009 */ 1010 static int 1011 sfc_flow_parse_nvgre(const struct rte_flow_item *item, 1012 struct sfc_flow_parse_ctx *parse_ctx, 1013 struct rte_flow_error *error) 1014 { 1015 int rc; 1016 efx_filter_spec_t *efx_spec = parse_ctx->filter; 1017 const struct rte_flow_item_nvgre *spec = NULL; 1018 const struct rte_flow_item_nvgre *mask = NULL; 1019 const struct rte_flow_item_nvgre supp_mask = { 1020 .tni = { 0xff, 0xff, 0xff } 1021 }; 1022 1023 rc = sfc_flow_parse_init(item, 1024 (const void **)&spec, 1025 (const void **)&mask, 1026 &supp_mask, 1027 &rte_flow_item_nvgre_mask, 1028 sizeof(struct rte_flow_item_nvgre), 1029 error); 1030 if (rc != 0) 1031 return rc; 1032 1033 rc = sfc_flow_set_match_flags_for_encap_pkts(item, efx_spec, 1034 EFX_IPPROTO_GRE, error); 1035 if (rc != 0) 1036 return rc; 1037 1038 efx_spec->efs_encap_type = EFX_TUNNEL_PROTOCOL_NVGRE; 1039 efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ENCAP_TYPE; 1040 1041 if (spec == NULL) 1042 return 0; 1043 1044 rc = sfc_flow_set_efx_spec_vni_or_vsid(efx_spec, spec->tni, 1045 mask->tni, item, error); 1046 1047 return rc; 1048 } 1049 1050 static const struct sfc_flow_item sfc_flow_items[] = { 1051 { 1052 .type = RTE_FLOW_ITEM_TYPE_VOID, 1053 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER, 1054 .layer = SFC_FLOW_ITEM_ANY_LAYER, 1055 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1056 .parse = sfc_flow_parse_void, 1057 }, 1058 { 1059 .type = RTE_FLOW_ITEM_TYPE_ETH, 1060 .prev_layer = SFC_FLOW_ITEM_START_LAYER, 1061 .layer = SFC_FLOW_ITEM_L2, 1062 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1063 .parse = sfc_flow_parse_eth, 1064 }, 1065 { 1066 .type = RTE_FLOW_ITEM_TYPE_VLAN, 1067 .prev_layer = SFC_FLOW_ITEM_L2, 1068 .layer = SFC_FLOW_ITEM_L2, 1069 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1070 .parse = sfc_flow_parse_vlan, 1071 }, 1072 { 1073 .type = RTE_FLOW_ITEM_TYPE_IPV4, 1074 .prev_layer = SFC_FLOW_ITEM_L2, 1075 .layer = SFC_FLOW_ITEM_L3, 1076 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1077 .parse = sfc_flow_parse_ipv4, 1078 }, 1079 { 1080 .type = RTE_FLOW_ITEM_TYPE_IPV6, 1081 .prev_layer = SFC_FLOW_ITEM_L2, 1082 .layer = SFC_FLOW_ITEM_L3, 1083 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1084 .parse = sfc_flow_parse_ipv6, 1085 }, 1086 { 1087 .type = RTE_FLOW_ITEM_TYPE_TCP, 1088 .prev_layer = SFC_FLOW_ITEM_L3, 1089 .layer = SFC_FLOW_ITEM_L4, 1090 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1091 .parse = sfc_flow_parse_tcp, 1092 }, 1093 { 1094 .type = RTE_FLOW_ITEM_TYPE_UDP, 1095 .prev_layer = SFC_FLOW_ITEM_L3, 1096 .layer = SFC_FLOW_ITEM_L4, 1097 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1098 .parse = sfc_flow_parse_udp, 1099 }, 1100 { 1101 .type = RTE_FLOW_ITEM_TYPE_VXLAN, 1102 .prev_layer = SFC_FLOW_ITEM_L4, 1103 .layer = SFC_FLOW_ITEM_START_LAYER, 1104 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1105 .parse = sfc_flow_parse_vxlan, 1106 }, 1107 { 1108 .type = RTE_FLOW_ITEM_TYPE_GENEVE, 1109 .prev_layer = SFC_FLOW_ITEM_L4, 1110 .layer = SFC_FLOW_ITEM_START_LAYER, 1111 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1112 .parse = sfc_flow_parse_geneve, 1113 }, 1114 { 1115 .type = RTE_FLOW_ITEM_TYPE_NVGRE, 1116 .prev_layer = SFC_FLOW_ITEM_L3, 1117 .layer = SFC_FLOW_ITEM_START_LAYER, 1118 .ctx_type = SFC_FLOW_PARSE_CTX_FILTER, 1119 .parse = sfc_flow_parse_nvgre, 1120 }, 1121 }; 1122 1123 /* 1124 * Protocol-independent flow API support 1125 */ 1126 static int 1127 sfc_flow_parse_attr(const struct rte_flow_attr *attr, 1128 struct rte_flow *flow, 1129 struct rte_flow_error *error) 1130 { 1131 struct sfc_flow_spec *spec = &flow->spec; 1132 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1133 1134 if (attr == NULL) { 1135 rte_flow_error_set(error, EINVAL, 1136 RTE_FLOW_ERROR_TYPE_ATTR, NULL, 1137 "NULL attribute"); 1138 return -rte_errno; 1139 } 1140 if (attr->group != 0) { 1141 rte_flow_error_set(error, ENOTSUP, 1142 RTE_FLOW_ERROR_TYPE_ATTR_GROUP, attr, 1143 "Groups are not supported"); 1144 return -rte_errno; 1145 } 1146 if (attr->egress != 0) { 1147 rte_flow_error_set(error, ENOTSUP, 1148 RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, attr, 1149 "Egress is not supported"); 1150 return -rte_errno; 1151 } 1152 if (attr->ingress == 0) { 1153 rte_flow_error_set(error, ENOTSUP, 1154 RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, attr, 1155 "Ingress is compulsory"); 1156 return -rte_errno; 1157 } 1158 if (attr->transfer == 0) { 1159 if (attr->priority != 0) { 1160 rte_flow_error_set(error, ENOTSUP, 1161 RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, 1162 attr, "Priorities are unsupported"); 1163 return -rte_errno; 1164 } 1165 spec->type = SFC_FLOW_SPEC_FILTER; 1166 spec_filter->template.efs_flags |= EFX_FILTER_FLAG_RX; 1167 spec_filter->template.efs_rss_context = EFX_RSS_CONTEXT_DEFAULT; 1168 spec_filter->template.efs_priority = EFX_FILTER_PRI_MANUAL; 1169 } else { 1170 rte_flow_error_set(error, ENOTSUP, 1171 RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER, attr, 1172 "Transfer is not supported"); 1173 return -rte_errno; 1174 } 1175 1176 return 0; 1177 } 1178 1179 /* Get item from array sfc_flow_items */ 1180 static const struct sfc_flow_item * 1181 sfc_flow_get_item(const struct sfc_flow_item *items, 1182 unsigned int nb_items, 1183 enum rte_flow_item_type type) 1184 { 1185 unsigned int i; 1186 1187 for (i = 0; i < nb_items; i++) 1188 if (items[i].type == type) 1189 return &items[i]; 1190 1191 return NULL; 1192 } 1193 1194 int 1195 sfc_flow_parse_pattern(const struct sfc_flow_item *flow_items, 1196 unsigned int nb_flow_items, 1197 const struct rte_flow_item pattern[], 1198 struct sfc_flow_parse_ctx *parse_ctx, 1199 struct rte_flow_error *error) 1200 { 1201 int rc; 1202 unsigned int prev_layer = SFC_FLOW_ITEM_ANY_LAYER; 1203 boolean_t is_ifrm = B_FALSE; 1204 const struct sfc_flow_item *item; 1205 1206 if (pattern == NULL) { 1207 rte_flow_error_set(error, EINVAL, 1208 RTE_FLOW_ERROR_TYPE_ITEM_NUM, NULL, 1209 "NULL pattern"); 1210 return -rte_errno; 1211 } 1212 1213 for (; pattern->type != RTE_FLOW_ITEM_TYPE_END; pattern++) { 1214 item = sfc_flow_get_item(flow_items, nb_flow_items, 1215 pattern->type); 1216 if (item == NULL) { 1217 rte_flow_error_set(error, ENOTSUP, 1218 RTE_FLOW_ERROR_TYPE_ITEM, pattern, 1219 "Unsupported pattern item"); 1220 return -rte_errno; 1221 } 1222 1223 /* 1224 * Omitting one or several protocol layers at the beginning 1225 * of pattern is supported 1226 */ 1227 if (item->prev_layer != SFC_FLOW_ITEM_ANY_LAYER && 1228 prev_layer != SFC_FLOW_ITEM_ANY_LAYER && 1229 item->prev_layer != prev_layer) { 1230 rte_flow_error_set(error, ENOTSUP, 1231 RTE_FLOW_ERROR_TYPE_ITEM, pattern, 1232 "Unexpected sequence of pattern items"); 1233 return -rte_errno; 1234 } 1235 1236 /* 1237 * Allow only VOID and ETH pattern items in the inner frame. 1238 * Also check that there is only one tunneling protocol. 1239 */ 1240 switch (item->type) { 1241 case RTE_FLOW_ITEM_TYPE_VOID: 1242 case RTE_FLOW_ITEM_TYPE_ETH: 1243 break; 1244 1245 case RTE_FLOW_ITEM_TYPE_VXLAN: 1246 case RTE_FLOW_ITEM_TYPE_GENEVE: 1247 case RTE_FLOW_ITEM_TYPE_NVGRE: 1248 if (is_ifrm) { 1249 rte_flow_error_set(error, EINVAL, 1250 RTE_FLOW_ERROR_TYPE_ITEM, 1251 pattern, 1252 "More than one tunneling protocol"); 1253 return -rte_errno; 1254 } 1255 is_ifrm = B_TRUE; 1256 break; 1257 1258 default: 1259 if (is_ifrm) { 1260 rte_flow_error_set(error, EINVAL, 1261 RTE_FLOW_ERROR_TYPE_ITEM, 1262 pattern, 1263 "There is an unsupported pattern item " 1264 "in the inner frame"); 1265 return -rte_errno; 1266 } 1267 break; 1268 } 1269 1270 if (parse_ctx->type != item->ctx_type) { 1271 rte_flow_error_set(error, EINVAL, 1272 RTE_FLOW_ERROR_TYPE_ITEM, pattern, 1273 "Parse context type mismatch"); 1274 return -rte_errno; 1275 } 1276 1277 rc = item->parse(pattern, parse_ctx, error); 1278 if (rc != 0) 1279 return rc; 1280 1281 if (item->layer != SFC_FLOW_ITEM_ANY_LAYER) 1282 prev_layer = item->layer; 1283 } 1284 1285 return 0; 1286 } 1287 1288 static int 1289 sfc_flow_parse_queue(struct sfc_adapter *sa, 1290 const struct rte_flow_action_queue *queue, 1291 struct rte_flow *flow) 1292 { 1293 struct sfc_flow_spec *spec = &flow->spec; 1294 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1295 struct sfc_rxq *rxq; 1296 1297 if (queue->index >= sfc_sa2shared(sa)->rxq_count) 1298 return -EINVAL; 1299 1300 rxq = &sa->rxq_ctrl[queue->index]; 1301 spec_filter->template.efs_dmaq_id = (uint16_t)rxq->hw_index; 1302 1303 return 0; 1304 } 1305 1306 static int 1307 sfc_flow_parse_rss(struct sfc_adapter *sa, 1308 const struct rte_flow_action_rss *action_rss, 1309 struct rte_flow *flow) 1310 { 1311 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa); 1312 struct sfc_rss *rss = &sas->rss; 1313 unsigned int rxq_sw_index; 1314 struct sfc_rxq *rxq; 1315 unsigned int rxq_hw_index_min; 1316 unsigned int rxq_hw_index_max; 1317 efx_rx_hash_type_t efx_hash_types; 1318 const uint8_t *rss_key; 1319 struct sfc_flow_spec *spec = &flow->spec; 1320 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1321 struct sfc_flow_rss *sfc_rss_conf = &spec_filter->rss_conf; 1322 unsigned int i; 1323 1324 if (action_rss->queue_num == 0) 1325 return -EINVAL; 1326 1327 rxq_sw_index = sfc_sa2shared(sa)->rxq_count - 1; 1328 rxq = &sa->rxq_ctrl[rxq_sw_index]; 1329 rxq_hw_index_min = rxq->hw_index; 1330 rxq_hw_index_max = 0; 1331 1332 for (i = 0; i < action_rss->queue_num; ++i) { 1333 rxq_sw_index = action_rss->queue[i]; 1334 1335 if (rxq_sw_index >= sfc_sa2shared(sa)->rxq_count) 1336 return -EINVAL; 1337 1338 rxq = &sa->rxq_ctrl[rxq_sw_index]; 1339 1340 if (rxq->hw_index < rxq_hw_index_min) 1341 rxq_hw_index_min = rxq->hw_index; 1342 1343 if (rxq->hw_index > rxq_hw_index_max) 1344 rxq_hw_index_max = rxq->hw_index; 1345 } 1346 1347 switch (action_rss->func) { 1348 case RTE_ETH_HASH_FUNCTION_DEFAULT: 1349 case RTE_ETH_HASH_FUNCTION_TOEPLITZ: 1350 break; 1351 default: 1352 return -EINVAL; 1353 } 1354 1355 if (action_rss->level) 1356 return -EINVAL; 1357 1358 /* 1359 * Dummy RSS action with only one queue and no specific settings 1360 * for hash types and key does not require dedicated RSS context 1361 * and may be simplified to single queue action. 1362 */ 1363 if (action_rss->queue_num == 1 && action_rss->types == 0 && 1364 action_rss->key_len == 0) { 1365 spec_filter->template.efs_dmaq_id = rxq_hw_index_min; 1366 return 0; 1367 } 1368 1369 if (action_rss->types) { 1370 int rc; 1371 1372 rc = sfc_rx_hf_rte_to_efx(sa, action_rss->types, 1373 &efx_hash_types); 1374 if (rc != 0) 1375 return -rc; 1376 } else { 1377 unsigned int i; 1378 1379 efx_hash_types = 0; 1380 for (i = 0; i < rss->hf_map_nb_entries; ++i) 1381 efx_hash_types |= rss->hf_map[i].efx; 1382 } 1383 1384 if (action_rss->key_len) { 1385 if (action_rss->key_len != sizeof(rss->key)) 1386 return -EINVAL; 1387 1388 rss_key = action_rss->key; 1389 } else { 1390 rss_key = rss->key; 1391 } 1392 1393 spec_filter->rss = B_TRUE; 1394 1395 sfc_rss_conf->rxq_hw_index_min = rxq_hw_index_min; 1396 sfc_rss_conf->rxq_hw_index_max = rxq_hw_index_max; 1397 sfc_rss_conf->rss_hash_types = efx_hash_types; 1398 rte_memcpy(sfc_rss_conf->rss_key, rss_key, sizeof(rss->key)); 1399 1400 for (i = 0; i < RTE_DIM(sfc_rss_conf->rss_tbl); ++i) { 1401 unsigned int nb_queues = action_rss->queue_num; 1402 unsigned int rxq_sw_index = action_rss->queue[i % nb_queues]; 1403 struct sfc_rxq *rxq = &sa->rxq_ctrl[rxq_sw_index]; 1404 1405 sfc_rss_conf->rss_tbl[i] = rxq->hw_index - rxq_hw_index_min; 1406 } 1407 1408 return 0; 1409 } 1410 1411 static int 1412 sfc_flow_spec_flush(struct sfc_adapter *sa, struct sfc_flow_spec *spec, 1413 unsigned int filters_count) 1414 { 1415 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1416 unsigned int i; 1417 int ret = 0; 1418 1419 for (i = 0; i < filters_count; i++) { 1420 int rc; 1421 1422 rc = efx_filter_remove(sa->nic, &spec_filter->filters[i]); 1423 if (ret == 0 && rc != 0) { 1424 sfc_err(sa, "failed to remove filter specification " 1425 "(rc = %d)", rc); 1426 ret = rc; 1427 } 1428 } 1429 1430 return ret; 1431 } 1432 1433 static int 1434 sfc_flow_spec_insert(struct sfc_adapter *sa, struct sfc_flow_spec *spec) 1435 { 1436 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1437 unsigned int i; 1438 int rc = 0; 1439 1440 for (i = 0; i < spec_filter->count; i++) { 1441 rc = efx_filter_insert(sa->nic, &spec_filter->filters[i]); 1442 if (rc != 0) { 1443 sfc_flow_spec_flush(sa, spec, i); 1444 break; 1445 } 1446 } 1447 1448 return rc; 1449 } 1450 1451 static int 1452 sfc_flow_spec_remove(struct sfc_adapter *sa, struct sfc_flow_spec *spec) 1453 { 1454 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1455 1456 return sfc_flow_spec_flush(sa, spec, spec_filter->count); 1457 } 1458 1459 static int 1460 sfc_flow_filter_insert(struct sfc_adapter *sa, 1461 struct rte_flow *flow) 1462 { 1463 struct sfc_adapter_shared * const sas = sfc_sa2shared(sa); 1464 struct sfc_rss *rss = &sas->rss; 1465 struct sfc_flow_spec_filter *spec_filter = &flow->spec.filter; 1466 struct sfc_flow_rss *flow_rss = &spec_filter->rss_conf; 1467 uint32_t efs_rss_context = EFX_RSS_CONTEXT_DEFAULT; 1468 unsigned int i; 1469 int rc = 0; 1470 1471 if (spec_filter->rss) { 1472 unsigned int rss_spread = MIN(flow_rss->rxq_hw_index_max - 1473 flow_rss->rxq_hw_index_min + 1, 1474 EFX_MAXRSS); 1475 1476 rc = efx_rx_scale_context_alloc(sa->nic, 1477 EFX_RX_SCALE_EXCLUSIVE, 1478 rss_spread, 1479 &efs_rss_context); 1480 if (rc != 0) 1481 goto fail_scale_context_alloc; 1482 1483 rc = efx_rx_scale_mode_set(sa->nic, efs_rss_context, 1484 rss->hash_alg, 1485 flow_rss->rss_hash_types, B_TRUE); 1486 if (rc != 0) 1487 goto fail_scale_mode_set; 1488 1489 rc = efx_rx_scale_key_set(sa->nic, efs_rss_context, 1490 flow_rss->rss_key, 1491 sizeof(rss->key)); 1492 if (rc != 0) 1493 goto fail_scale_key_set; 1494 1495 /* 1496 * At this point, fully elaborated filter specifications 1497 * have been produced from the template. To make sure that 1498 * RSS behaviour is consistent between them, set the same 1499 * RSS context value everywhere. 1500 */ 1501 for (i = 0; i < spec_filter->count; i++) { 1502 efx_filter_spec_t *spec = &spec_filter->filters[i]; 1503 1504 spec->efs_rss_context = efs_rss_context; 1505 spec->efs_dmaq_id = flow_rss->rxq_hw_index_min; 1506 spec->efs_flags |= EFX_FILTER_FLAG_RX_RSS; 1507 } 1508 } 1509 1510 rc = sfc_flow_spec_insert(sa, &flow->spec); 1511 if (rc != 0) 1512 goto fail_filter_insert; 1513 1514 if (spec_filter->rss) { 1515 /* 1516 * Scale table is set after filter insertion because 1517 * the table entries are relative to the base RxQ ID 1518 * and the latter is submitted to the HW by means of 1519 * inserting a filter, so by the time of the request 1520 * the HW knows all the information needed to verify 1521 * the table entries, and the operation will succeed 1522 */ 1523 rc = efx_rx_scale_tbl_set(sa->nic, efs_rss_context, 1524 flow_rss->rss_tbl, 1525 RTE_DIM(flow_rss->rss_tbl)); 1526 if (rc != 0) 1527 goto fail_scale_tbl_set; 1528 } 1529 1530 return 0; 1531 1532 fail_scale_tbl_set: 1533 sfc_flow_spec_remove(sa, &flow->spec); 1534 1535 fail_filter_insert: 1536 fail_scale_key_set: 1537 fail_scale_mode_set: 1538 if (efs_rss_context != EFX_RSS_CONTEXT_DEFAULT) 1539 efx_rx_scale_context_free(sa->nic, efs_rss_context); 1540 1541 fail_scale_context_alloc: 1542 return rc; 1543 } 1544 1545 static int 1546 sfc_flow_filter_remove(struct sfc_adapter *sa, 1547 struct rte_flow *flow) 1548 { 1549 struct sfc_flow_spec_filter *spec_filter = &flow->spec.filter; 1550 int rc = 0; 1551 1552 rc = sfc_flow_spec_remove(sa, &flow->spec); 1553 if (rc != 0) 1554 return rc; 1555 1556 if (spec_filter->rss) { 1557 /* 1558 * All specifications for a given flow rule have the same RSS 1559 * context, so that RSS context value is taken from the first 1560 * filter specification 1561 */ 1562 efx_filter_spec_t *spec = &spec_filter->filters[0]; 1563 1564 rc = efx_rx_scale_context_free(sa->nic, spec->efs_rss_context); 1565 } 1566 1567 return rc; 1568 } 1569 1570 static int 1571 sfc_flow_parse_mark(struct sfc_adapter *sa, 1572 const struct rte_flow_action_mark *mark, 1573 struct rte_flow *flow) 1574 { 1575 struct sfc_flow_spec *spec = &flow->spec; 1576 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1577 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic); 1578 1579 if (mark == NULL || mark->id > encp->enc_filter_action_mark_max) 1580 return EINVAL; 1581 1582 spec_filter->template.efs_flags |= EFX_FILTER_FLAG_ACTION_MARK; 1583 spec_filter->template.efs_mark = mark->id; 1584 1585 return 0; 1586 } 1587 1588 static int 1589 sfc_flow_parse_actions(struct sfc_adapter *sa, 1590 const struct rte_flow_action actions[], 1591 struct rte_flow *flow, 1592 struct rte_flow_error *error) 1593 { 1594 int rc; 1595 struct sfc_flow_spec *spec = &flow->spec; 1596 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1597 const unsigned int dp_rx_features = sa->priv.dp_rx->features; 1598 uint32_t actions_set = 0; 1599 const uint32_t fate_actions_mask = (1UL << RTE_FLOW_ACTION_TYPE_QUEUE) | 1600 (1UL << RTE_FLOW_ACTION_TYPE_RSS) | 1601 (1UL << RTE_FLOW_ACTION_TYPE_DROP); 1602 const uint32_t mark_actions_mask = (1UL << RTE_FLOW_ACTION_TYPE_MARK) | 1603 (1UL << RTE_FLOW_ACTION_TYPE_FLAG); 1604 1605 if (actions == NULL) { 1606 rte_flow_error_set(error, EINVAL, 1607 RTE_FLOW_ERROR_TYPE_ACTION_NUM, NULL, 1608 "NULL actions"); 1609 return -rte_errno; 1610 } 1611 1612 #define SFC_BUILD_SET_OVERFLOW(_action, _set) \ 1613 RTE_BUILD_BUG_ON(_action >= sizeof(_set) * CHAR_BIT) 1614 1615 for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) { 1616 switch (actions->type) { 1617 case RTE_FLOW_ACTION_TYPE_VOID: 1618 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VOID, 1619 actions_set); 1620 break; 1621 1622 case RTE_FLOW_ACTION_TYPE_QUEUE: 1623 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_QUEUE, 1624 actions_set); 1625 if ((actions_set & fate_actions_mask) != 0) 1626 goto fail_fate_actions; 1627 1628 rc = sfc_flow_parse_queue(sa, actions->conf, flow); 1629 if (rc != 0) { 1630 rte_flow_error_set(error, EINVAL, 1631 RTE_FLOW_ERROR_TYPE_ACTION, actions, 1632 "Bad QUEUE action"); 1633 return -rte_errno; 1634 } 1635 break; 1636 1637 case RTE_FLOW_ACTION_TYPE_RSS: 1638 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_RSS, 1639 actions_set); 1640 if ((actions_set & fate_actions_mask) != 0) 1641 goto fail_fate_actions; 1642 1643 rc = sfc_flow_parse_rss(sa, actions->conf, flow); 1644 if (rc != 0) { 1645 rte_flow_error_set(error, -rc, 1646 RTE_FLOW_ERROR_TYPE_ACTION, actions, 1647 "Bad RSS action"); 1648 return -rte_errno; 1649 } 1650 break; 1651 1652 case RTE_FLOW_ACTION_TYPE_DROP: 1653 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_DROP, 1654 actions_set); 1655 if ((actions_set & fate_actions_mask) != 0) 1656 goto fail_fate_actions; 1657 1658 spec_filter->template.efs_dmaq_id = 1659 EFX_FILTER_SPEC_RX_DMAQ_ID_DROP; 1660 break; 1661 1662 case RTE_FLOW_ACTION_TYPE_FLAG: 1663 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_FLAG, 1664 actions_set); 1665 if ((actions_set & mark_actions_mask) != 0) 1666 goto fail_actions_overlap; 1667 1668 if ((dp_rx_features & SFC_DP_RX_FEAT_FLOW_FLAG) == 0) { 1669 rte_flow_error_set(error, ENOTSUP, 1670 RTE_FLOW_ERROR_TYPE_ACTION, NULL, 1671 "FLAG action is not supported on the current Rx datapath"); 1672 return -rte_errno; 1673 } 1674 1675 spec_filter->template.efs_flags |= 1676 EFX_FILTER_FLAG_ACTION_FLAG; 1677 break; 1678 1679 case RTE_FLOW_ACTION_TYPE_MARK: 1680 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_MARK, 1681 actions_set); 1682 if ((actions_set & mark_actions_mask) != 0) 1683 goto fail_actions_overlap; 1684 1685 if ((dp_rx_features & SFC_DP_RX_FEAT_FLOW_MARK) == 0) { 1686 rte_flow_error_set(error, ENOTSUP, 1687 RTE_FLOW_ERROR_TYPE_ACTION, NULL, 1688 "MARK action is not supported on the current Rx datapath"); 1689 return -rte_errno; 1690 } 1691 1692 rc = sfc_flow_parse_mark(sa, actions->conf, flow); 1693 if (rc != 0) { 1694 rte_flow_error_set(error, rc, 1695 RTE_FLOW_ERROR_TYPE_ACTION, actions, 1696 "Bad MARK action"); 1697 return -rte_errno; 1698 } 1699 break; 1700 1701 default: 1702 rte_flow_error_set(error, ENOTSUP, 1703 RTE_FLOW_ERROR_TYPE_ACTION, actions, 1704 "Action is not supported"); 1705 return -rte_errno; 1706 } 1707 1708 actions_set |= (1UL << actions->type); 1709 } 1710 #undef SFC_BUILD_SET_OVERFLOW 1711 1712 /* When fate is unknown, drop traffic. */ 1713 if ((actions_set & fate_actions_mask) == 0) { 1714 spec_filter->template.efs_dmaq_id = 1715 EFX_FILTER_SPEC_RX_DMAQ_ID_DROP; 1716 } 1717 1718 return 0; 1719 1720 fail_fate_actions: 1721 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, actions, 1722 "Cannot combine several fate-deciding actions, " 1723 "choose between QUEUE, RSS or DROP"); 1724 return -rte_errno; 1725 1726 fail_actions_overlap: 1727 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, actions, 1728 "Overlapping actions are not supported"); 1729 return -rte_errno; 1730 } 1731 1732 /** 1733 * Set the EFX_FILTER_MATCH_UNKNOWN_UCAST_DST 1734 * and EFX_FILTER_MATCH_UNKNOWN_MCAST_DST match flags in the same 1735 * specifications after copying. 1736 * 1737 * @param spec[in, out] 1738 * SFC flow specification to update. 1739 * @param filters_count_for_one_val[in] 1740 * How many specifications should have the same match flag, what is the 1741 * number of specifications before copying. 1742 * @param error[out] 1743 * Perform verbose error reporting if not NULL. 1744 */ 1745 static int 1746 sfc_flow_set_unknown_dst_flags(struct sfc_flow_spec *spec, 1747 unsigned int filters_count_for_one_val, 1748 struct rte_flow_error *error) 1749 { 1750 unsigned int i; 1751 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1752 static const efx_filter_match_flags_t vals[] = { 1753 EFX_FILTER_MATCH_UNKNOWN_UCAST_DST, 1754 EFX_FILTER_MATCH_UNKNOWN_MCAST_DST 1755 }; 1756 1757 if (filters_count_for_one_val * RTE_DIM(vals) != spec_filter->count) { 1758 rte_flow_error_set(error, EINVAL, 1759 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 1760 "Number of specifications is incorrect while copying " 1761 "by unknown destination flags"); 1762 return -rte_errno; 1763 } 1764 1765 for (i = 0; i < spec_filter->count; i++) { 1766 /* The check above ensures that divisor can't be zero here */ 1767 spec_filter->filters[i].efs_match_flags |= 1768 vals[i / filters_count_for_one_val]; 1769 } 1770 1771 return 0; 1772 } 1773 1774 /** 1775 * Check that the following conditions are met: 1776 * - the list of supported filters has a filter 1777 * with EFX_FILTER_MATCH_UNKNOWN_MCAST_DST flag instead of 1778 * EFX_FILTER_MATCH_UNKNOWN_UCAST_DST, since this filter will also 1779 * be inserted. 1780 * 1781 * @param match[in] 1782 * The match flags of filter. 1783 * @param spec[in] 1784 * Specification to be supplemented. 1785 * @param filter[in] 1786 * SFC filter with list of supported filters. 1787 */ 1788 static boolean_t 1789 sfc_flow_check_unknown_dst_flags(efx_filter_match_flags_t match, 1790 __rte_unused efx_filter_spec_t *spec, 1791 struct sfc_filter *filter) 1792 { 1793 unsigned int i; 1794 efx_filter_match_flags_t match_mcast_dst; 1795 1796 match_mcast_dst = 1797 (match & ~EFX_FILTER_MATCH_UNKNOWN_UCAST_DST) | 1798 EFX_FILTER_MATCH_UNKNOWN_MCAST_DST; 1799 for (i = 0; i < filter->supported_match_num; i++) { 1800 if (match_mcast_dst == filter->supported_match[i]) 1801 return B_TRUE; 1802 } 1803 1804 return B_FALSE; 1805 } 1806 1807 /** 1808 * Set the EFX_FILTER_MATCH_ETHER_TYPE match flag and EFX_ETHER_TYPE_IPV4 and 1809 * EFX_ETHER_TYPE_IPV6 values of the corresponding field in the same 1810 * specifications after copying. 1811 * 1812 * @param spec[in, out] 1813 * SFC flow specification to update. 1814 * @param filters_count_for_one_val[in] 1815 * How many specifications should have the same EtherType value, what is the 1816 * number of specifications before copying. 1817 * @param error[out] 1818 * Perform verbose error reporting if not NULL. 1819 */ 1820 static int 1821 sfc_flow_set_ethertypes(struct sfc_flow_spec *spec, 1822 unsigned int filters_count_for_one_val, 1823 struct rte_flow_error *error) 1824 { 1825 unsigned int i; 1826 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1827 static const uint16_t vals[] = { 1828 EFX_ETHER_TYPE_IPV4, EFX_ETHER_TYPE_IPV6 1829 }; 1830 1831 if (filters_count_for_one_val * RTE_DIM(vals) != spec_filter->count) { 1832 rte_flow_error_set(error, EINVAL, 1833 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 1834 "Number of specifications is incorrect " 1835 "while copying by Ethertype"); 1836 return -rte_errno; 1837 } 1838 1839 for (i = 0; i < spec_filter->count; i++) { 1840 spec_filter->filters[i].efs_match_flags |= 1841 EFX_FILTER_MATCH_ETHER_TYPE; 1842 1843 /* 1844 * The check above ensures that 1845 * filters_count_for_one_val is not 0 1846 */ 1847 spec_filter->filters[i].efs_ether_type = 1848 vals[i / filters_count_for_one_val]; 1849 } 1850 1851 return 0; 1852 } 1853 1854 /** 1855 * Set the EFX_FILTER_MATCH_OUTER_VID match flag with value 0 1856 * in the same specifications after copying. 1857 * 1858 * @param spec[in, out] 1859 * SFC flow specification to update. 1860 * @param filters_count_for_one_val[in] 1861 * How many specifications should have the same match flag, what is the 1862 * number of specifications before copying. 1863 * @param error[out] 1864 * Perform verbose error reporting if not NULL. 1865 */ 1866 static int 1867 sfc_flow_set_outer_vid_flag(struct sfc_flow_spec *spec, 1868 unsigned int filters_count_for_one_val, 1869 struct rte_flow_error *error) 1870 { 1871 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1872 unsigned int i; 1873 1874 if (filters_count_for_one_val != spec_filter->count) { 1875 rte_flow_error_set(error, EINVAL, 1876 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 1877 "Number of specifications is incorrect " 1878 "while copying by outer VLAN ID"); 1879 return -rte_errno; 1880 } 1881 1882 for (i = 0; i < spec_filter->count; i++) { 1883 spec_filter->filters[i].efs_match_flags |= 1884 EFX_FILTER_MATCH_OUTER_VID; 1885 1886 spec_filter->filters[i].efs_outer_vid = 0; 1887 } 1888 1889 return 0; 1890 } 1891 1892 /** 1893 * Set the EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST and 1894 * EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST match flags in the same 1895 * specifications after copying. 1896 * 1897 * @param spec[in, out] 1898 * SFC flow specification to update. 1899 * @param filters_count_for_one_val[in] 1900 * How many specifications should have the same match flag, what is the 1901 * number of specifications before copying. 1902 * @param error[out] 1903 * Perform verbose error reporting if not NULL. 1904 */ 1905 static int 1906 sfc_flow_set_ifrm_unknown_dst_flags(struct sfc_flow_spec *spec, 1907 unsigned int filters_count_for_one_val, 1908 struct rte_flow_error *error) 1909 { 1910 unsigned int i; 1911 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 1912 static const efx_filter_match_flags_t vals[] = { 1913 EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST, 1914 EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST 1915 }; 1916 1917 if (filters_count_for_one_val * RTE_DIM(vals) != spec_filter->count) { 1918 rte_flow_error_set(error, EINVAL, 1919 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 1920 "Number of specifications is incorrect while copying " 1921 "by inner frame unknown destination flags"); 1922 return -rte_errno; 1923 } 1924 1925 for (i = 0; i < spec_filter->count; i++) { 1926 /* The check above ensures that divisor can't be zero here */ 1927 spec_filter->filters[i].efs_match_flags |= 1928 vals[i / filters_count_for_one_val]; 1929 } 1930 1931 return 0; 1932 } 1933 1934 /** 1935 * Check that the following conditions are met: 1936 * - the specification corresponds to a filter for encapsulated traffic 1937 * - the list of supported filters has a filter 1938 * with EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST flag instead of 1939 * EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST, since this filter will also 1940 * be inserted. 1941 * 1942 * @param match[in] 1943 * The match flags of filter. 1944 * @param spec[in] 1945 * Specification to be supplemented. 1946 * @param filter[in] 1947 * SFC filter with list of supported filters. 1948 */ 1949 static boolean_t 1950 sfc_flow_check_ifrm_unknown_dst_flags(efx_filter_match_flags_t match, 1951 efx_filter_spec_t *spec, 1952 struct sfc_filter *filter) 1953 { 1954 unsigned int i; 1955 efx_tunnel_protocol_t encap_type = spec->efs_encap_type; 1956 efx_filter_match_flags_t match_mcast_dst; 1957 1958 if (encap_type == EFX_TUNNEL_PROTOCOL_NONE) 1959 return B_FALSE; 1960 1961 match_mcast_dst = 1962 (match & ~EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST) | 1963 EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST; 1964 for (i = 0; i < filter->supported_match_num; i++) { 1965 if (match_mcast_dst == filter->supported_match[i]) 1966 return B_TRUE; 1967 } 1968 1969 return B_FALSE; 1970 } 1971 1972 /** 1973 * Check that the list of supported filters has a filter that differs 1974 * from @p match in that it has no flag EFX_FILTER_MATCH_OUTER_VID 1975 * in this case that filter will be used and the flag 1976 * EFX_FILTER_MATCH_OUTER_VID is not needed. 1977 * 1978 * @param match[in] 1979 * The match flags of filter. 1980 * @param spec[in] 1981 * Specification to be supplemented. 1982 * @param filter[in] 1983 * SFC filter with list of supported filters. 1984 */ 1985 static boolean_t 1986 sfc_flow_check_outer_vid_flag(efx_filter_match_flags_t match, 1987 __rte_unused efx_filter_spec_t *spec, 1988 struct sfc_filter *filter) 1989 { 1990 unsigned int i; 1991 efx_filter_match_flags_t match_without_vid = 1992 match & ~EFX_FILTER_MATCH_OUTER_VID; 1993 1994 for (i = 0; i < filter->supported_match_num; i++) { 1995 if (match_without_vid == filter->supported_match[i]) 1996 return B_FALSE; 1997 } 1998 1999 return B_TRUE; 2000 } 2001 2002 /* 2003 * Match flags that can be automatically added to filters. 2004 * Selecting the last minimum when searching for the copy flag ensures that the 2005 * EFX_FILTER_MATCH_UNKNOWN_UCAST_DST flag has a higher priority than 2006 * EFX_FILTER_MATCH_ETHER_TYPE. This is because the filter 2007 * EFX_FILTER_MATCH_UNKNOWN_UCAST_DST is at the end of the list of supported 2008 * filters. 2009 */ 2010 static const struct sfc_flow_copy_flag sfc_flow_copy_flags[] = { 2011 { 2012 .flag = EFX_FILTER_MATCH_UNKNOWN_UCAST_DST, 2013 .vals_count = 2, 2014 .set_vals = sfc_flow_set_unknown_dst_flags, 2015 .spec_check = sfc_flow_check_unknown_dst_flags, 2016 }, 2017 { 2018 .flag = EFX_FILTER_MATCH_ETHER_TYPE, 2019 .vals_count = 2, 2020 .set_vals = sfc_flow_set_ethertypes, 2021 .spec_check = NULL, 2022 }, 2023 { 2024 .flag = EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST, 2025 .vals_count = 2, 2026 .set_vals = sfc_flow_set_ifrm_unknown_dst_flags, 2027 .spec_check = sfc_flow_check_ifrm_unknown_dst_flags, 2028 }, 2029 { 2030 .flag = EFX_FILTER_MATCH_OUTER_VID, 2031 .vals_count = 1, 2032 .set_vals = sfc_flow_set_outer_vid_flag, 2033 .spec_check = sfc_flow_check_outer_vid_flag, 2034 }, 2035 }; 2036 2037 /* Get item from array sfc_flow_copy_flags */ 2038 static const struct sfc_flow_copy_flag * 2039 sfc_flow_get_copy_flag(efx_filter_match_flags_t flag) 2040 { 2041 unsigned int i; 2042 2043 for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) { 2044 if (sfc_flow_copy_flags[i].flag == flag) 2045 return &sfc_flow_copy_flags[i]; 2046 } 2047 2048 return NULL; 2049 } 2050 2051 /** 2052 * Make copies of the specifications, set match flag and values 2053 * of the field that corresponds to it. 2054 * 2055 * @param spec[in, out] 2056 * SFC flow specification to update. 2057 * @param flag[in] 2058 * The match flag to add. 2059 * @param error[out] 2060 * Perform verbose error reporting if not NULL. 2061 */ 2062 static int 2063 sfc_flow_spec_add_match_flag(struct sfc_flow_spec *spec, 2064 efx_filter_match_flags_t flag, 2065 struct rte_flow_error *error) 2066 { 2067 unsigned int i; 2068 unsigned int new_filters_count; 2069 unsigned int filters_count_for_one_val; 2070 const struct sfc_flow_copy_flag *copy_flag; 2071 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 2072 int rc; 2073 2074 copy_flag = sfc_flow_get_copy_flag(flag); 2075 if (copy_flag == NULL) { 2076 rte_flow_error_set(error, ENOTSUP, 2077 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 2078 "Unsupported spec field for copying"); 2079 return -rte_errno; 2080 } 2081 2082 new_filters_count = spec_filter->count * copy_flag->vals_count; 2083 if (new_filters_count > SF_FLOW_SPEC_NB_FILTERS_MAX) { 2084 rte_flow_error_set(error, EINVAL, 2085 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 2086 "Too much EFX specifications in the flow rule"); 2087 return -rte_errno; 2088 } 2089 2090 /* Copy filters specifications */ 2091 for (i = spec_filter->count; i < new_filters_count; i++) { 2092 spec_filter->filters[i] = 2093 spec_filter->filters[i - spec_filter->count]; 2094 } 2095 2096 filters_count_for_one_val = spec_filter->count; 2097 spec_filter->count = new_filters_count; 2098 2099 rc = copy_flag->set_vals(spec, filters_count_for_one_val, error); 2100 if (rc != 0) 2101 return rc; 2102 2103 return 0; 2104 } 2105 2106 /** 2107 * Check that the given set of match flags missing in the original filter spec 2108 * could be covered by adding spec copies which specify the corresponding 2109 * flags and packet field values to match. 2110 * 2111 * @param miss_flags[in] 2112 * Flags that are missing until the supported filter. 2113 * @param spec[in] 2114 * Specification to be supplemented. 2115 * @param filter[in] 2116 * SFC filter. 2117 * 2118 * @return 2119 * Number of specifications after copy or 0, if the flags can not be added. 2120 */ 2121 static unsigned int 2122 sfc_flow_check_missing_flags(efx_filter_match_flags_t miss_flags, 2123 efx_filter_spec_t *spec, 2124 struct sfc_filter *filter) 2125 { 2126 unsigned int i; 2127 efx_filter_match_flags_t copy_flags = 0; 2128 efx_filter_match_flags_t flag; 2129 efx_filter_match_flags_t match = spec->efs_match_flags | miss_flags; 2130 sfc_flow_spec_check *check; 2131 unsigned int multiplier = 1; 2132 2133 for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) { 2134 flag = sfc_flow_copy_flags[i].flag; 2135 check = sfc_flow_copy_flags[i].spec_check; 2136 if ((flag & miss_flags) == flag) { 2137 if (check != NULL && (!check(match, spec, filter))) 2138 continue; 2139 2140 copy_flags |= flag; 2141 multiplier *= sfc_flow_copy_flags[i].vals_count; 2142 } 2143 } 2144 2145 if (copy_flags == miss_flags) 2146 return multiplier; 2147 2148 return 0; 2149 } 2150 2151 /** 2152 * Attempt to supplement the specification template to the minimally 2153 * supported set of match flags. To do this, it is necessary to copy 2154 * the specifications, filling them with the values of fields that 2155 * correspond to the missing flags. 2156 * The necessary and sufficient filter is built from the fewest number 2157 * of copies which could be made to cover the minimally required set 2158 * of flags. 2159 * 2160 * @param sa[in] 2161 * SFC adapter. 2162 * @param spec[in, out] 2163 * SFC flow specification to update. 2164 * @param error[out] 2165 * Perform verbose error reporting if not NULL. 2166 */ 2167 static int 2168 sfc_flow_spec_filters_complete(struct sfc_adapter *sa, 2169 struct sfc_flow_spec *spec, 2170 struct rte_flow_error *error) 2171 { 2172 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 2173 struct sfc_filter *filter = &sa->filter; 2174 efx_filter_match_flags_t miss_flags; 2175 efx_filter_match_flags_t min_miss_flags = 0; 2176 efx_filter_match_flags_t match; 2177 unsigned int min_multiplier = UINT_MAX; 2178 unsigned int multiplier; 2179 unsigned int i; 2180 int rc; 2181 2182 match = spec_filter->template.efs_match_flags; 2183 for (i = 0; i < filter->supported_match_num; i++) { 2184 if ((match & filter->supported_match[i]) == match) { 2185 miss_flags = filter->supported_match[i] & (~match); 2186 multiplier = sfc_flow_check_missing_flags(miss_flags, 2187 &spec_filter->template, filter); 2188 if (multiplier > 0) { 2189 if (multiplier <= min_multiplier) { 2190 min_multiplier = multiplier; 2191 min_miss_flags = miss_flags; 2192 } 2193 } 2194 } 2195 } 2196 2197 if (min_multiplier == UINT_MAX) { 2198 rte_flow_error_set(error, ENOTSUP, 2199 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 2200 "The flow rule pattern is unsupported"); 2201 return -rte_errno; 2202 } 2203 2204 for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) { 2205 efx_filter_match_flags_t flag = sfc_flow_copy_flags[i].flag; 2206 2207 if ((flag & min_miss_flags) == flag) { 2208 rc = sfc_flow_spec_add_match_flag(spec, flag, error); 2209 if (rc != 0) 2210 return rc; 2211 } 2212 } 2213 2214 return 0; 2215 } 2216 2217 /** 2218 * Check that set of match flags is referred to by a filter. Filter is 2219 * described by match flags with the ability to add OUTER_VID and INNER_VID 2220 * flags. 2221 * 2222 * @param match_flags[in] 2223 * Set of match flags. 2224 * @param flags_pattern[in] 2225 * Pattern of filter match flags. 2226 */ 2227 static boolean_t 2228 sfc_flow_is_match_with_vids(efx_filter_match_flags_t match_flags, 2229 efx_filter_match_flags_t flags_pattern) 2230 { 2231 if ((match_flags & flags_pattern) != flags_pattern) 2232 return B_FALSE; 2233 2234 switch (match_flags & ~flags_pattern) { 2235 case 0: 2236 case EFX_FILTER_MATCH_OUTER_VID: 2237 case EFX_FILTER_MATCH_OUTER_VID | EFX_FILTER_MATCH_INNER_VID: 2238 return B_TRUE; 2239 default: 2240 return B_FALSE; 2241 } 2242 } 2243 2244 /** 2245 * Check whether the spec maps to a hardware filter which is known to be 2246 * ineffective despite being valid. 2247 * 2248 * @param filter[in] 2249 * SFC filter with list of supported filters. 2250 * @param spec[in] 2251 * SFC flow specification. 2252 */ 2253 static boolean_t 2254 sfc_flow_is_match_flags_exception(struct sfc_filter *filter, 2255 struct sfc_flow_spec *spec) 2256 { 2257 unsigned int i; 2258 uint16_t ether_type; 2259 uint8_t ip_proto; 2260 efx_filter_match_flags_t match_flags; 2261 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 2262 2263 for (i = 0; i < spec_filter->count; i++) { 2264 match_flags = spec_filter->filters[i].efs_match_flags; 2265 2266 if (sfc_flow_is_match_with_vids(match_flags, 2267 EFX_FILTER_MATCH_ETHER_TYPE) || 2268 sfc_flow_is_match_with_vids(match_flags, 2269 EFX_FILTER_MATCH_ETHER_TYPE | 2270 EFX_FILTER_MATCH_LOC_MAC)) { 2271 ether_type = spec_filter->filters[i].efs_ether_type; 2272 if (filter->supports_ip_proto_or_addr_filter && 2273 (ether_type == EFX_ETHER_TYPE_IPV4 || 2274 ether_type == EFX_ETHER_TYPE_IPV6)) 2275 return B_TRUE; 2276 } else if (sfc_flow_is_match_with_vids(match_flags, 2277 EFX_FILTER_MATCH_ETHER_TYPE | 2278 EFX_FILTER_MATCH_IP_PROTO) || 2279 sfc_flow_is_match_with_vids(match_flags, 2280 EFX_FILTER_MATCH_ETHER_TYPE | 2281 EFX_FILTER_MATCH_IP_PROTO | 2282 EFX_FILTER_MATCH_LOC_MAC)) { 2283 ip_proto = spec_filter->filters[i].efs_ip_proto; 2284 if (filter->supports_rem_or_local_port_filter && 2285 (ip_proto == EFX_IPPROTO_TCP || 2286 ip_proto == EFX_IPPROTO_UDP)) 2287 return B_TRUE; 2288 } 2289 } 2290 2291 return B_FALSE; 2292 } 2293 2294 static int 2295 sfc_flow_validate_match_flags(struct sfc_adapter *sa, 2296 struct rte_flow *flow, 2297 struct rte_flow_error *error) 2298 { 2299 struct sfc_flow_spec *spec = &flow->spec; 2300 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 2301 efx_filter_spec_t *spec_tmpl = &spec_filter->template; 2302 efx_filter_match_flags_t match_flags = spec_tmpl->efs_match_flags; 2303 int rc; 2304 2305 /* Initialize the first filter spec with template */ 2306 spec_filter->filters[0] = *spec_tmpl; 2307 spec_filter->count = 1; 2308 2309 if (!sfc_filter_is_match_supported(sa, match_flags)) { 2310 rc = sfc_flow_spec_filters_complete(sa, &flow->spec, error); 2311 if (rc != 0) 2312 return rc; 2313 } 2314 2315 if (sfc_flow_is_match_flags_exception(&sa->filter, &flow->spec)) { 2316 rte_flow_error_set(error, ENOTSUP, 2317 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 2318 "The flow rule pattern is unsupported"); 2319 return -rte_errno; 2320 } 2321 2322 return 0; 2323 } 2324 2325 static int 2326 sfc_flow_parse_rte_to_filter(struct rte_eth_dev *dev, 2327 const struct rte_flow_item pattern[], 2328 const struct rte_flow_action actions[], 2329 struct rte_flow *flow, 2330 struct rte_flow_error *error) 2331 { 2332 struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev); 2333 struct sfc_flow_spec *spec = &flow->spec; 2334 struct sfc_flow_spec_filter *spec_filter = &spec->filter; 2335 struct sfc_flow_parse_ctx ctx; 2336 int rc; 2337 2338 ctx.type = SFC_FLOW_PARSE_CTX_FILTER; 2339 ctx.filter = &spec_filter->template; 2340 2341 rc = sfc_flow_parse_pattern(sfc_flow_items, RTE_DIM(sfc_flow_items), 2342 pattern, &ctx, error); 2343 if (rc != 0) 2344 goto fail_bad_value; 2345 2346 rc = sfc_flow_parse_actions(sa, actions, flow, error); 2347 if (rc != 0) 2348 goto fail_bad_value; 2349 2350 rc = sfc_flow_validate_match_flags(sa, flow, error); 2351 if (rc != 0) 2352 goto fail_bad_value; 2353 2354 return 0; 2355 2356 fail_bad_value: 2357 return rc; 2358 } 2359 2360 static int 2361 sfc_flow_parse(struct rte_eth_dev *dev, 2362 const struct rte_flow_attr *attr, 2363 const struct rte_flow_item pattern[], 2364 const struct rte_flow_action actions[], 2365 struct rte_flow *flow, 2366 struct rte_flow_error *error) 2367 { 2368 const struct sfc_flow_ops_by_spec *ops; 2369 int rc; 2370 2371 rc = sfc_flow_parse_attr(attr, flow, error); 2372 if (rc != 0) 2373 return rc; 2374 2375 ops = sfc_flow_get_ops_by_spec(flow); 2376 if (ops == NULL || ops->parse == NULL) { 2377 rte_flow_error_set(error, ENOTSUP, 2378 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 2379 "No backend to handle this flow"); 2380 return -rte_errno; 2381 } 2382 2383 return ops->parse(dev, pattern, actions, flow, error); 2384 } 2385 2386 static struct rte_flow * 2387 sfc_flow_zmalloc(struct rte_flow_error *error) 2388 { 2389 struct rte_flow *flow; 2390 2391 flow = rte_zmalloc("sfc_rte_flow", sizeof(*flow), 0); 2392 if (flow == NULL) { 2393 rte_flow_error_set(error, ENOMEM, 2394 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 2395 "Failed to allocate memory"); 2396 } 2397 2398 return flow; 2399 } 2400 2401 static void 2402 sfc_flow_free(__rte_unused struct sfc_adapter *sa, struct rte_flow *flow) 2403 { 2404 rte_free(flow); 2405 } 2406 2407 static int 2408 sfc_flow_insert(struct sfc_adapter *sa, struct rte_flow *flow, 2409 struct rte_flow_error *error) 2410 { 2411 const struct sfc_flow_ops_by_spec *ops; 2412 int rc; 2413 2414 ops = sfc_flow_get_ops_by_spec(flow); 2415 if (ops == NULL || ops->insert == NULL) { 2416 rte_flow_error_set(error, ENOTSUP, 2417 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 2418 "No backend to handle this flow"); 2419 return rte_errno; 2420 } 2421 2422 rc = ops->insert(sa, flow); 2423 if (rc != 0) { 2424 rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, 2425 NULL, "Failed to insert the flow rule"); 2426 } 2427 2428 return rc; 2429 } 2430 2431 static int 2432 sfc_flow_remove(struct sfc_adapter *sa, struct rte_flow *flow, 2433 struct rte_flow_error *error) 2434 { 2435 const struct sfc_flow_ops_by_spec *ops; 2436 int rc; 2437 2438 ops = sfc_flow_get_ops_by_spec(flow); 2439 if (ops == NULL || ops->remove == NULL) { 2440 rte_flow_error_set(error, ENOTSUP, 2441 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, 2442 "No backend to handle this flow"); 2443 return rte_errno; 2444 } 2445 2446 rc = ops->remove(sa, flow); 2447 if (rc != 0) { 2448 rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, 2449 NULL, "Failed to remove the flow rule"); 2450 } 2451 2452 return rc; 2453 } 2454 2455 static int 2456 sfc_flow_validate(struct rte_eth_dev *dev, 2457 const struct rte_flow_attr *attr, 2458 const struct rte_flow_item pattern[], 2459 const struct rte_flow_action actions[], 2460 struct rte_flow_error *error) 2461 { 2462 struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev); 2463 struct rte_flow *flow; 2464 int rc; 2465 2466 flow = sfc_flow_zmalloc(error); 2467 if (flow == NULL) 2468 return -rte_errno; 2469 2470 rc = sfc_flow_parse(dev, attr, pattern, actions, flow, error); 2471 2472 sfc_flow_free(sa, flow); 2473 2474 return rc; 2475 } 2476 2477 static struct rte_flow * 2478 sfc_flow_create(struct rte_eth_dev *dev, 2479 const struct rte_flow_attr *attr, 2480 const struct rte_flow_item pattern[], 2481 const struct rte_flow_action actions[], 2482 struct rte_flow_error *error) 2483 { 2484 struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev); 2485 struct rte_flow *flow = NULL; 2486 int rc; 2487 2488 flow = sfc_flow_zmalloc(error); 2489 if (flow == NULL) 2490 goto fail_no_mem; 2491 2492 rc = sfc_flow_parse(dev, attr, pattern, actions, flow, error); 2493 if (rc != 0) 2494 goto fail_bad_value; 2495 2496 sfc_adapter_lock(sa); 2497 2498 TAILQ_INSERT_TAIL(&sa->flow_list, flow, entries); 2499 2500 if (sa->state == SFC_ADAPTER_STARTED) { 2501 rc = sfc_flow_insert(sa, flow, error); 2502 if (rc != 0) 2503 goto fail_flow_insert; 2504 } 2505 2506 sfc_adapter_unlock(sa); 2507 2508 return flow; 2509 2510 fail_flow_insert: 2511 TAILQ_REMOVE(&sa->flow_list, flow, entries); 2512 2513 fail_bad_value: 2514 sfc_flow_free(sa, flow); 2515 sfc_adapter_unlock(sa); 2516 2517 fail_no_mem: 2518 return NULL; 2519 } 2520 2521 static int 2522 sfc_flow_destroy(struct rte_eth_dev *dev, 2523 struct rte_flow *flow, 2524 struct rte_flow_error *error) 2525 { 2526 struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev); 2527 struct rte_flow *flow_ptr; 2528 int rc = EINVAL; 2529 2530 sfc_adapter_lock(sa); 2531 2532 TAILQ_FOREACH(flow_ptr, &sa->flow_list, entries) { 2533 if (flow_ptr == flow) 2534 rc = 0; 2535 } 2536 if (rc != 0) { 2537 rte_flow_error_set(error, rc, 2538 RTE_FLOW_ERROR_TYPE_HANDLE, NULL, 2539 "Failed to find flow rule to destroy"); 2540 goto fail_bad_value; 2541 } 2542 2543 if (sa->state == SFC_ADAPTER_STARTED) 2544 rc = sfc_flow_remove(sa, flow, error); 2545 2546 TAILQ_REMOVE(&sa->flow_list, flow, entries); 2547 sfc_flow_free(sa, flow); 2548 2549 fail_bad_value: 2550 sfc_adapter_unlock(sa); 2551 2552 return -rc; 2553 } 2554 2555 static int 2556 sfc_flow_flush(struct rte_eth_dev *dev, 2557 struct rte_flow_error *error) 2558 { 2559 struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev); 2560 struct rte_flow *flow; 2561 int ret = 0; 2562 2563 sfc_adapter_lock(sa); 2564 2565 while ((flow = TAILQ_FIRST(&sa->flow_list)) != NULL) { 2566 if (sa->state == SFC_ADAPTER_STARTED) { 2567 int rc; 2568 2569 rc = sfc_flow_remove(sa, flow, error); 2570 if (rc != 0) 2571 ret = rc; 2572 } 2573 2574 TAILQ_REMOVE(&sa->flow_list, flow, entries); 2575 sfc_flow_free(sa, flow); 2576 } 2577 2578 sfc_adapter_unlock(sa); 2579 2580 return -ret; 2581 } 2582 2583 static int 2584 sfc_flow_isolate(struct rte_eth_dev *dev, int enable, 2585 struct rte_flow_error *error) 2586 { 2587 struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev); 2588 int ret = 0; 2589 2590 sfc_adapter_lock(sa); 2591 if (sa->state != SFC_ADAPTER_INITIALIZED) { 2592 rte_flow_error_set(error, EBUSY, 2593 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, 2594 NULL, "please close the port first"); 2595 ret = -rte_errno; 2596 } else { 2597 sfc_sa2shared(sa)->isolated = (enable) ? B_TRUE : B_FALSE; 2598 } 2599 sfc_adapter_unlock(sa); 2600 2601 return ret; 2602 } 2603 2604 const struct rte_flow_ops sfc_flow_ops = { 2605 .validate = sfc_flow_validate, 2606 .create = sfc_flow_create, 2607 .destroy = sfc_flow_destroy, 2608 .flush = sfc_flow_flush, 2609 .query = NULL, 2610 .isolate = sfc_flow_isolate, 2611 }; 2612 2613 void 2614 sfc_flow_init(struct sfc_adapter *sa) 2615 { 2616 SFC_ASSERT(sfc_adapter_is_locked(sa)); 2617 2618 TAILQ_INIT(&sa->flow_list); 2619 } 2620 2621 void 2622 sfc_flow_fini(struct sfc_adapter *sa) 2623 { 2624 struct rte_flow *flow; 2625 2626 SFC_ASSERT(sfc_adapter_is_locked(sa)); 2627 2628 while ((flow = TAILQ_FIRST(&sa->flow_list)) != NULL) { 2629 TAILQ_REMOVE(&sa->flow_list, flow, entries); 2630 sfc_flow_free(sa, flow); 2631 } 2632 } 2633 2634 void 2635 sfc_flow_stop(struct sfc_adapter *sa) 2636 { 2637 struct rte_flow *flow; 2638 2639 SFC_ASSERT(sfc_adapter_is_locked(sa)); 2640 2641 TAILQ_FOREACH(flow, &sa->flow_list, entries) 2642 sfc_flow_remove(sa, flow, NULL); 2643 } 2644 2645 int 2646 sfc_flow_start(struct sfc_adapter *sa) 2647 { 2648 struct rte_flow *flow; 2649 int rc = 0; 2650 2651 sfc_log_init(sa, "entry"); 2652 2653 SFC_ASSERT(sfc_adapter_is_locked(sa)); 2654 2655 TAILQ_FOREACH(flow, &sa->flow_list, entries) { 2656 rc = sfc_flow_insert(sa, flow, NULL); 2657 if (rc != 0) 2658 goto fail_bad_flow; 2659 } 2660 2661 sfc_log_init(sa, "done"); 2662 2663 fail_bad_flow: 2664 return rc; 2665 } 2666