1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (C) 2019-2021, Intel Corporation. */ 3 4 #include "ice.h" 5 #include "ice_tc_lib.h" 6 #include "ice_fltr.h" 7 #include "ice_lib.h" 8 #include "ice_protocol_type.h" 9 10 /** 11 * ice_tc_count_lkups - determine lookup count for switch filter 12 * @flags: TC-flower flags 13 * @headers: Pointer to TC flower filter header structure 14 * @fltr: Pointer to outer TC filter structure 15 * 16 * Determine lookup count based on TC flower input for switch filter. 17 */ 18 static int 19 ice_tc_count_lkups(u32 flags, struct ice_tc_flower_lyr_2_4_hdrs *headers, 20 struct ice_tc_flower_fltr *fltr) 21 { 22 int lkups_cnt = 0; 23 24 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) 25 lkups_cnt++; 26 27 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC) 28 lkups_cnt++; 29 30 if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS) 31 lkups_cnt++; 32 33 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 34 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | 35 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 36 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) 37 lkups_cnt++; 38 39 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) 40 lkups_cnt++; 41 42 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) 43 lkups_cnt++; 44 45 /* are MAC fields specified? */ 46 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | ICE_TC_FLWR_FIELD_SRC_MAC)) 47 lkups_cnt++; 48 49 /* is VLAN specified? */ 50 if (flags & ICE_TC_FLWR_FIELD_VLAN) 51 lkups_cnt++; 52 53 /* are IPv[4|6] fields specified? */ 54 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | ICE_TC_FLWR_FIELD_SRC_IPV4 | 55 ICE_TC_FLWR_FIELD_DEST_IPV6 | ICE_TC_FLWR_FIELD_SRC_IPV6)) 56 lkups_cnt++; 57 58 /* is L4 (TCP/UDP/any other L4 protocol fields) specified? */ 59 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | 60 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) 61 lkups_cnt++; 62 63 return lkups_cnt; 64 } 65 66 static enum ice_protocol_type ice_proto_type_from_mac(bool inner) 67 { 68 return inner ? ICE_MAC_IL : ICE_MAC_OFOS; 69 } 70 71 static enum ice_protocol_type ice_proto_type_from_etype(bool inner) 72 { 73 return inner ? ICE_ETYPE_IL : ICE_ETYPE_OL; 74 } 75 76 static enum ice_protocol_type ice_proto_type_from_ipv4(bool inner) 77 { 78 return inner ? ICE_IPV4_IL : ICE_IPV4_OFOS; 79 } 80 81 static enum ice_protocol_type ice_proto_type_from_ipv6(bool inner) 82 { 83 return inner ? ICE_IPV6_IL : ICE_IPV6_OFOS; 84 } 85 86 static enum ice_protocol_type ice_proto_type_from_l4_port(u16 ip_proto) 87 { 88 switch (ip_proto) { 89 case IPPROTO_TCP: 90 return ICE_TCP_IL; 91 case IPPROTO_UDP: 92 return ICE_UDP_ILOS; 93 } 94 95 return 0; 96 } 97 98 static enum ice_protocol_type 99 ice_proto_type_from_tunnel(enum ice_tunnel_type type) 100 { 101 switch (type) { 102 case TNL_VXLAN: 103 return ICE_VXLAN; 104 case TNL_GENEVE: 105 return ICE_GENEVE; 106 case TNL_GRETAP: 107 return ICE_NVGRE; 108 case TNL_GTPU: 109 /* NO_PAY profiles will not work with GTP-U */ 110 return ICE_GTP; 111 case TNL_GTPC: 112 return ICE_GTP_NO_PAY; 113 default: 114 return 0; 115 } 116 } 117 118 static enum ice_sw_tunnel_type 119 ice_sw_type_from_tunnel(enum ice_tunnel_type type) 120 { 121 switch (type) { 122 case TNL_VXLAN: 123 return ICE_SW_TUN_VXLAN; 124 case TNL_GENEVE: 125 return ICE_SW_TUN_GENEVE; 126 case TNL_GRETAP: 127 return ICE_SW_TUN_NVGRE; 128 case TNL_GTPU: 129 return ICE_SW_TUN_GTPU; 130 case TNL_GTPC: 131 return ICE_SW_TUN_GTPC; 132 default: 133 return ICE_NON_TUN; 134 } 135 } 136 137 static int 138 ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr, 139 struct ice_adv_lkup_elem *list) 140 { 141 struct ice_tc_flower_lyr_2_4_hdrs *hdr = &fltr->outer_headers; 142 int i = 0; 143 144 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) { 145 u32 tenant_id; 146 147 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type); 148 switch (fltr->tunnel_type) { 149 case TNL_VXLAN: 150 case TNL_GENEVE: 151 tenant_id = be32_to_cpu(fltr->tenant_id) << 8; 152 list[i].h_u.tnl_hdr.vni = cpu_to_be32(tenant_id); 153 memcpy(&list[i].m_u.tnl_hdr.vni, "\xff\xff\xff\x00", 4); 154 i++; 155 break; 156 case TNL_GRETAP: 157 list[i].h_u.nvgre_hdr.tni_flow = fltr->tenant_id; 158 memcpy(&list[i].m_u.nvgre_hdr.tni_flow, 159 "\xff\xff\xff\xff", 4); 160 i++; 161 break; 162 case TNL_GTPC: 163 case TNL_GTPU: 164 list[i].h_u.gtp_hdr.teid = fltr->tenant_id; 165 memcpy(&list[i].m_u.gtp_hdr.teid, 166 "\xff\xff\xff\xff", 4); 167 i++; 168 break; 169 default: 170 break; 171 } 172 } 173 174 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC) { 175 list[i].type = ice_proto_type_from_mac(false); 176 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr, 177 hdr->l2_key.dst_mac); 178 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr, 179 hdr->l2_mask.dst_mac); 180 i++; 181 } 182 183 if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS && 184 (fltr->tunnel_type == TNL_GTPU || fltr->tunnel_type == TNL_GTPC)) { 185 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type); 186 187 if (fltr->gtp_pdu_info_masks.pdu_type) { 188 list[i].h_u.gtp_hdr.pdu_type = 189 fltr->gtp_pdu_info_keys.pdu_type << 4; 190 memcpy(&list[i].m_u.gtp_hdr.pdu_type, "\xf0", 1); 191 } 192 193 if (fltr->gtp_pdu_info_masks.qfi) { 194 list[i].h_u.gtp_hdr.qfi = fltr->gtp_pdu_info_keys.qfi; 195 memcpy(&list[i].m_u.gtp_hdr.qfi, "\x3f", 1); 196 } 197 198 i++; 199 } 200 201 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 202 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4)) { 203 list[i].type = ice_proto_type_from_ipv4(false); 204 205 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV4) { 206 list[i].h_u.ipv4_hdr.src_addr = hdr->l3_key.src_ipv4; 207 list[i].m_u.ipv4_hdr.src_addr = hdr->l3_mask.src_ipv4; 208 } 209 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV4) { 210 list[i].h_u.ipv4_hdr.dst_addr = hdr->l3_key.dst_ipv4; 211 list[i].m_u.ipv4_hdr.dst_addr = hdr->l3_mask.dst_ipv4; 212 } 213 i++; 214 } 215 216 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 217 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) { 218 list[i].type = ice_proto_type_from_ipv6(false); 219 220 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV6) { 221 memcpy(&list[i].h_u.ipv6_hdr.src_addr, 222 &hdr->l3_key.src_ipv6_addr, 223 sizeof(hdr->l3_key.src_ipv6_addr)); 224 memcpy(&list[i].m_u.ipv6_hdr.src_addr, 225 &hdr->l3_mask.src_ipv6_addr, 226 sizeof(hdr->l3_mask.src_ipv6_addr)); 227 } 228 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV6) { 229 memcpy(&list[i].h_u.ipv6_hdr.dst_addr, 230 &hdr->l3_key.dst_ipv6_addr, 231 sizeof(hdr->l3_key.dst_ipv6_addr)); 232 memcpy(&list[i].m_u.ipv6_hdr.dst_addr, 233 &hdr->l3_mask.dst_ipv6_addr, 234 sizeof(hdr->l3_mask.dst_ipv6_addr)); 235 } 236 i++; 237 } 238 239 if ((flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) && 240 hdr->l3_key.ip_proto == IPPROTO_UDP) { 241 list[i].type = ICE_UDP_OF; 242 list[i].h_u.l4_hdr.dst_port = hdr->l4_key.dst_port; 243 list[i].m_u.l4_hdr.dst_port = hdr->l4_mask.dst_port; 244 i++; 245 } 246 247 return i; 248 } 249 250 /** 251 * ice_tc_fill_rules - fill filter rules based on TC fltr 252 * @hw: pointer to HW structure 253 * @flags: tc flower field flags 254 * @tc_fltr: pointer to TC flower filter 255 * @list: list of advance rule elements 256 * @rule_info: pointer to information about rule 257 * @l4_proto: pointer to information such as L4 proto type 258 * 259 * Fill ice_adv_lkup_elem list based on TC flower flags and 260 * TC flower headers. This list should be used to add 261 * advance filter in hardware. 262 */ 263 static int 264 ice_tc_fill_rules(struct ice_hw *hw, u32 flags, 265 struct ice_tc_flower_fltr *tc_fltr, 266 struct ice_adv_lkup_elem *list, 267 struct ice_adv_rule_info *rule_info, 268 u16 *l4_proto) 269 { 270 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 271 bool inner = false; 272 int i = 0; 273 274 rule_info->tun_type = ice_sw_type_from_tunnel(tc_fltr->tunnel_type); 275 if (tc_fltr->tunnel_type != TNL_LAST) { 276 i = ice_tc_fill_tunnel_outer(flags, tc_fltr, list); 277 278 headers = &tc_fltr->inner_headers; 279 inner = true; 280 } 281 282 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) { 283 list[i].type = ice_proto_type_from_etype(inner); 284 list[i].h_u.ethertype.ethtype_id = headers->l2_key.n_proto; 285 list[i].m_u.ethertype.ethtype_id = headers->l2_mask.n_proto; 286 i++; 287 } 288 289 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 290 ICE_TC_FLWR_FIELD_SRC_MAC)) { 291 struct ice_tc_l2_hdr *l2_key, *l2_mask; 292 293 l2_key = &headers->l2_key; 294 l2_mask = &headers->l2_mask; 295 296 list[i].type = ice_proto_type_from_mac(inner); 297 if (flags & ICE_TC_FLWR_FIELD_DST_MAC) { 298 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr, 299 l2_key->dst_mac); 300 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr, 301 l2_mask->dst_mac); 302 } 303 if (flags & ICE_TC_FLWR_FIELD_SRC_MAC) { 304 ether_addr_copy(list[i].h_u.eth_hdr.src_addr, 305 l2_key->src_mac); 306 ether_addr_copy(list[i].m_u.eth_hdr.src_addr, 307 l2_mask->src_mac); 308 } 309 i++; 310 } 311 312 /* copy VLAN info */ 313 if (flags & ICE_TC_FLWR_FIELD_VLAN) { 314 list[i].type = ICE_VLAN_OFOS; 315 list[i].h_u.vlan_hdr.vlan = headers->vlan_hdr.vlan_id; 316 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xFFFF); 317 i++; 318 } 319 320 /* copy L3 (IPv[4|6]: src, dest) address */ 321 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | 322 ICE_TC_FLWR_FIELD_SRC_IPV4)) { 323 struct ice_tc_l3_hdr *l3_key, *l3_mask; 324 325 list[i].type = ice_proto_type_from_ipv4(inner); 326 l3_key = &headers->l3_key; 327 l3_mask = &headers->l3_mask; 328 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV4) { 329 list[i].h_u.ipv4_hdr.dst_addr = l3_key->dst_ipv4; 330 list[i].m_u.ipv4_hdr.dst_addr = l3_mask->dst_ipv4; 331 } 332 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV4) { 333 list[i].h_u.ipv4_hdr.src_addr = l3_key->src_ipv4; 334 list[i].m_u.ipv4_hdr.src_addr = l3_mask->src_ipv4; 335 } 336 i++; 337 } else if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV6 | 338 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 339 struct ice_ipv6_hdr *ipv6_hdr, *ipv6_mask; 340 struct ice_tc_l3_hdr *l3_key, *l3_mask; 341 342 list[i].type = ice_proto_type_from_ipv6(inner); 343 ipv6_hdr = &list[i].h_u.ipv6_hdr; 344 ipv6_mask = &list[i].m_u.ipv6_hdr; 345 l3_key = &headers->l3_key; 346 l3_mask = &headers->l3_mask; 347 348 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV6) { 349 memcpy(&ipv6_hdr->dst_addr, &l3_key->dst_ipv6_addr, 350 sizeof(l3_key->dst_ipv6_addr)); 351 memcpy(&ipv6_mask->dst_addr, &l3_mask->dst_ipv6_addr, 352 sizeof(l3_mask->dst_ipv6_addr)); 353 } 354 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV6) { 355 memcpy(&ipv6_hdr->src_addr, &l3_key->src_ipv6_addr, 356 sizeof(l3_key->src_ipv6_addr)); 357 memcpy(&ipv6_mask->src_addr, &l3_mask->src_ipv6_addr, 358 sizeof(l3_mask->src_ipv6_addr)); 359 } 360 i++; 361 } 362 363 /* copy L4 (src, dest) port */ 364 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | 365 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) { 366 struct ice_tc_l4_hdr *l4_key, *l4_mask; 367 368 list[i].type = ice_proto_type_from_l4_port(headers->l3_key.ip_proto); 369 l4_key = &headers->l4_key; 370 l4_mask = &headers->l4_mask; 371 372 if (flags & ICE_TC_FLWR_FIELD_DEST_L4_PORT) { 373 list[i].h_u.l4_hdr.dst_port = l4_key->dst_port; 374 list[i].m_u.l4_hdr.dst_port = l4_mask->dst_port; 375 } 376 if (flags & ICE_TC_FLWR_FIELD_SRC_L4_PORT) { 377 list[i].h_u.l4_hdr.src_port = l4_key->src_port; 378 list[i].m_u.l4_hdr.src_port = l4_mask->src_port; 379 } 380 i++; 381 } 382 383 return i; 384 } 385 386 /** 387 * ice_tc_tun_get_type - get the tunnel type 388 * @tunnel_dev: ptr to tunnel device 389 * 390 * This function detects appropriate tunnel_type if specified device is 391 * tunnel device such as VXLAN/Geneve 392 */ 393 static int ice_tc_tun_get_type(struct net_device *tunnel_dev) 394 { 395 if (netif_is_vxlan(tunnel_dev)) 396 return TNL_VXLAN; 397 if (netif_is_geneve(tunnel_dev)) 398 return TNL_GENEVE; 399 if (netif_is_gretap(tunnel_dev) || 400 netif_is_ip6gretap(tunnel_dev)) 401 return TNL_GRETAP; 402 403 /* Assume GTP-U by default in case of GTP netdev. 404 * GTP-C may be selected later, based on enc_dst_port. 405 */ 406 if (netif_is_gtp(tunnel_dev)) 407 return TNL_GTPU; 408 return TNL_LAST; 409 } 410 411 bool ice_is_tunnel_supported(struct net_device *dev) 412 { 413 return ice_tc_tun_get_type(dev) != TNL_LAST; 414 } 415 416 static int 417 ice_eswitch_tc_parse_action(struct ice_tc_flower_fltr *fltr, 418 struct flow_action_entry *act) 419 { 420 struct ice_repr *repr; 421 422 switch (act->id) { 423 case FLOW_ACTION_DROP: 424 fltr->action.fltr_act = ICE_DROP_PACKET; 425 break; 426 427 case FLOW_ACTION_REDIRECT: 428 fltr->action.fltr_act = ICE_FWD_TO_VSI; 429 430 if (ice_is_port_repr_netdev(act->dev)) { 431 repr = ice_netdev_to_repr(act->dev); 432 433 fltr->dest_vsi = repr->src_vsi; 434 fltr->direction = ICE_ESWITCH_FLTR_INGRESS; 435 } else if (netif_is_ice(act->dev) || 436 ice_is_tunnel_supported(act->dev)) { 437 fltr->direction = ICE_ESWITCH_FLTR_EGRESS; 438 } else { 439 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported netdevice in switchdev mode"); 440 return -EINVAL; 441 } 442 443 break; 444 445 default: 446 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action in switchdev mode"); 447 return -EINVAL; 448 } 449 450 return 0; 451 } 452 453 static int 454 ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 455 { 456 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 457 struct ice_adv_rule_info rule_info = { 0 }; 458 struct ice_rule_query_data rule_added; 459 struct ice_hw *hw = &vsi->back->hw; 460 struct ice_adv_lkup_elem *list; 461 u32 flags = fltr->flags; 462 int lkups_cnt; 463 int ret; 464 int i; 465 466 if (!flags || (flags & ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT)) { 467 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported encap field(s)"); 468 return -EOPNOTSUPP; 469 } 470 471 lkups_cnt = ice_tc_count_lkups(flags, headers, fltr); 472 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 473 if (!list) 474 return -ENOMEM; 475 476 i = ice_tc_fill_rules(hw, flags, fltr, list, &rule_info, NULL); 477 if (i != lkups_cnt) { 478 ret = -EINVAL; 479 goto exit; 480 } 481 482 /* egress traffic is always redirect to uplink */ 483 if (fltr->direction == ICE_ESWITCH_FLTR_EGRESS) 484 fltr->dest_vsi = vsi->back->switchdev.uplink_vsi; 485 486 rule_info.sw_act.fltr_act = fltr->action.fltr_act; 487 if (fltr->action.fltr_act != ICE_DROP_PACKET) 488 rule_info.sw_act.vsi_handle = fltr->dest_vsi->idx; 489 /* For now, making priority to be highest, and it also becomes 490 * the priority for recipe which will get created as a result of 491 * new extraction sequence based on input set. 492 * Priority '7' is max val for switch recipe, higher the number 493 * results into order of switch rule evaluation. 494 */ 495 rule_info.priority = 7; 496 497 if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) { 498 rule_info.sw_act.flag |= ICE_FLTR_RX; 499 rule_info.sw_act.src = hw->pf_id; 500 rule_info.rx = true; 501 } else { 502 rule_info.sw_act.flag |= ICE_FLTR_TX; 503 rule_info.sw_act.src = vsi->idx; 504 rule_info.rx = false; 505 rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE; 506 rule_info.flags_info.act_valid = true; 507 } 508 509 /* specify the cookie as filter_rule_id */ 510 rule_info.fltr_rule_id = fltr->cookie; 511 512 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 513 if (ret == -EEXIST) { 514 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist"); 515 ret = -EINVAL; 516 goto exit; 517 } else if (ret) { 518 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error"); 519 goto exit; 520 } 521 522 /* store the output params, which are needed later for removing 523 * advanced switch filter 524 */ 525 fltr->rid = rule_added.rid; 526 fltr->rule_id = rule_added.rule_id; 527 528 exit: 529 kfree(list); 530 return ret; 531 } 532 533 /** 534 * ice_add_tc_flower_adv_fltr - add appropriate filter rules 535 * @vsi: Pointer to VSI 536 * @tc_fltr: Pointer to TC flower filter structure 537 * 538 * based on filter parameters using Advance recipes supported 539 * by OS package. 540 */ 541 static int 542 ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi, 543 struct ice_tc_flower_fltr *tc_fltr) 544 { 545 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 546 struct ice_adv_rule_info rule_info = {0}; 547 struct ice_rule_query_data rule_added; 548 struct ice_adv_lkup_elem *list; 549 struct ice_pf *pf = vsi->back; 550 struct ice_hw *hw = &pf->hw; 551 u32 flags = tc_fltr->flags; 552 struct ice_vsi *ch_vsi; 553 struct device *dev; 554 u16 lkups_cnt = 0; 555 u16 l4_proto = 0; 556 int ret = 0; 557 u16 i = 0; 558 559 dev = ice_pf_to_dev(pf); 560 if (ice_is_safe_mode(pf)) { 561 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode"); 562 return -EOPNOTSUPP; 563 } 564 565 if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | 566 ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 567 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 568 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 569 ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) { 570 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)"); 571 return -EOPNOTSUPP; 572 } 573 574 /* get the channel (aka ADQ VSI) */ 575 if (tc_fltr->dest_vsi) 576 ch_vsi = tc_fltr->dest_vsi; 577 else 578 ch_vsi = vsi->tc_map_vsi[tc_fltr->action.tc_class]; 579 580 lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr); 581 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 582 if (!list) 583 return -ENOMEM; 584 585 i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto); 586 if (i != lkups_cnt) { 587 ret = -EINVAL; 588 goto exit; 589 } 590 591 rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act; 592 if (tc_fltr->action.tc_class >= ICE_CHNL_START_TC) { 593 if (!ch_vsi) { 594 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because specified destination doesn't exist"); 595 ret = -EINVAL; 596 goto exit; 597 } 598 599 rule_info.sw_act.fltr_act = ICE_FWD_TO_VSI; 600 rule_info.sw_act.vsi_handle = ch_vsi->idx; 601 rule_info.priority = 7; 602 rule_info.sw_act.src = hw->pf_id; 603 rule_info.rx = true; 604 dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n", 605 tc_fltr->action.tc_class, 606 rule_info.sw_act.vsi_handle, lkups_cnt); 607 } else { 608 rule_info.sw_act.flag |= ICE_FLTR_TX; 609 rule_info.sw_act.src = vsi->idx; 610 rule_info.rx = false; 611 } 612 613 /* specify the cookie as filter_rule_id */ 614 rule_info.fltr_rule_id = tc_fltr->cookie; 615 616 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 617 if (ret == -EEXIST) { 618 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 619 "Unable to add filter because it already exist"); 620 ret = -EINVAL; 621 goto exit; 622 } else if (ret) { 623 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 624 "Unable to add filter due to error"); 625 goto exit; 626 } 627 628 /* store the output params, which are needed later for removing 629 * advanced switch filter 630 */ 631 tc_fltr->rid = rule_added.rid; 632 tc_fltr->rule_id = rule_added.rule_id; 633 if (tc_fltr->action.tc_class > 0 && ch_vsi) { 634 /* For PF ADQ, VSI type is set as ICE_VSI_CHNL, and 635 * for PF ADQ filter, it is not yet set in tc_fltr, 636 * hence store the dest_vsi ptr in tc_fltr 637 */ 638 if (ch_vsi->type == ICE_VSI_CHNL) 639 tc_fltr->dest_vsi = ch_vsi; 640 /* keep track of advanced switch filter for 641 * destination VSI (channel VSI) 642 */ 643 ch_vsi->num_chnl_fltr++; 644 /* in this case, dest_id is VSI handle (sw handle) */ 645 tc_fltr->dest_id = rule_added.vsi_handle; 646 647 /* keeps track of channel filters for PF VSI */ 648 if (vsi->type == ICE_VSI_PF && 649 (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 650 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 651 pf->num_dmac_chnl_fltrs++; 652 } 653 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x) for TC %u, rid %u, rule_id %u, vsi_idx %u\n", 654 lkups_cnt, flags, 655 tc_fltr->action.tc_class, rule_added.rid, 656 rule_added.rule_id, rule_added.vsi_handle); 657 exit: 658 kfree(list); 659 return ret; 660 } 661 662 /** 663 * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter 664 * @match: Pointer to flow match structure 665 * @fltr: Pointer to filter structure 666 * @headers: inner or outer header fields 667 * @is_encap: set true for tunnel IPv4 address 668 */ 669 static int 670 ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match, 671 struct ice_tc_flower_fltr *fltr, 672 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 673 { 674 if (match->key->dst) { 675 if (is_encap) 676 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4; 677 else 678 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4; 679 headers->l3_key.dst_ipv4 = match->key->dst; 680 headers->l3_mask.dst_ipv4 = match->mask->dst; 681 } 682 if (match->key->src) { 683 if (is_encap) 684 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4; 685 else 686 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4; 687 headers->l3_key.src_ipv4 = match->key->src; 688 headers->l3_mask.src_ipv4 = match->mask->src; 689 } 690 return 0; 691 } 692 693 /** 694 * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter 695 * @match: Pointer to flow match structure 696 * @fltr: Pointer to filter structure 697 * @headers: inner or outer header fields 698 * @is_encap: set true for tunnel IPv6 address 699 */ 700 static int 701 ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match, 702 struct ice_tc_flower_fltr *fltr, 703 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 704 { 705 struct ice_tc_l3_hdr *l3_key, *l3_mask; 706 707 /* src and dest IPV6 address should not be LOOPBACK 708 * (0:0:0:0:0:0:0:1), which can be represented as ::1 709 */ 710 if (ipv6_addr_loopback(&match->key->dst) || 711 ipv6_addr_loopback(&match->key->src)) { 712 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK"); 713 return -EINVAL; 714 } 715 /* if src/dest IPv6 address is *,* error */ 716 if (ipv6_addr_any(&match->mask->dst) && 717 ipv6_addr_any(&match->mask->src)) { 718 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any"); 719 return -EINVAL; 720 } 721 if (!ipv6_addr_any(&match->mask->dst)) { 722 if (is_encap) 723 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6; 724 else 725 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6; 726 } 727 if (!ipv6_addr_any(&match->mask->src)) { 728 if (is_encap) 729 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6; 730 else 731 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6; 732 } 733 734 l3_key = &headers->l3_key; 735 l3_mask = &headers->l3_mask; 736 737 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 738 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 739 memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr, 740 sizeof(match->key->src.s6_addr)); 741 memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr, 742 sizeof(match->mask->src.s6_addr)); 743 } 744 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 745 ICE_TC_FLWR_FIELD_DEST_IPV6)) { 746 memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr, 747 sizeof(match->key->dst.s6_addr)); 748 memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr, 749 sizeof(match->mask->dst.s6_addr)); 750 } 751 752 return 0; 753 } 754 755 /** 756 * ice_tc_set_port - Parse ports from TC flower filter 757 * @match: Flow match structure 758 * @fltr: Pointer to filter structure 759 * @headers: inner or outer header fields 760 * @is_encap: set true for tunnel port 761 */ 762 static int 763 ice_tc_set_port(struct flow_match_ports match, 764 struct ice_tc_flower_fltr *fltr, 765 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 766 { 767 if (match.key->dst) { 768 if (is_encap) 769 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT; 770 else 771 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT; 772 773 headers->l4_key.dst_port = match.key->dst; 774 headers->l4_mask.dst_port = match.mask->dst; 775 } 776 if (match.key->src) { 777 if (is_encap) 778 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT; 779 else 780 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT; 781 782 headers->l4_key.src_port = match.key->src; 783 headers->l4_mask.src_port = match.mask->src; 784 } 785 return 0; 786 } 787 788 static struct net_device * 789 ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule) 790 { 791 struct flow_action_entry *act; 792 int i; 793 794 if (ice_is_tunnel_supported(dev)) 795 return dev; 796 797 flow_action_for_each(i, act, &rule->action) { 798 if (act->id == FLOW_ACTION_REDIRECT && 799 ice_is_tunnel_supported(act->dev)) 800 return act->dev; 801 } 802 803 return NULL; 804 } 805 806 /** 807 * ice_parse_gtp_type - Sets GTP tunnel type to GTP-U or GTP-C 808 * @match: Flow match structure 809 * @fltr: Pointer to filter structure 810 * 811 * GTP-C/GTP-U is selected based on destination port number (enc_dst_port). 812 * Before calling this funtcion, fltr->tunnel_type should be set to TNL_GTPU, 813 * therefore making GTP-U the default choice (when destination port number is 814 * not specified). 815 */ 816 static int 817 ice_parse_gtp_type(struct flow_match_ports match, 818 struct ice_tc_flower_fltr *fltr) 819 { 820 u16 dst_port; 821 822 if (match.key->dst) { 823 dst_port = be16_to_cpu(match.key->dst); 824 825 switch (dst_port) { 826 case 2152: 827 break; 828 case 2123: 829 fltr->tunnel_type = TNL_GTPC; 830 break; 831 default: 832 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported GTP port number"); 833 return -EINVAL; 834 } 835 } 836 837 return 0; 838 } 839 840 static int 841 ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule, 842 struct ice_tc_flower_fltr *fltr) 843 { 844 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 845 struct flow_match_control enc_control; 846 847 fltr->tunnel_type = ice_tc_tun_get_type(dev); 848 headers->l3_key.ip_proto = IPPROTO_UDP; 849 850 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 851 struct flow_match_enc_keyid enc_keyid; 852 853 flow_rule_match_enc_keyid(rule, &enc_keyid); 854 855 if (!enc_keyid.mask->keyid || 856 enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32)) 857 return -EINVAL; 858 859 fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID; 860 fltr->tenant_id = enc_keyid.key->keyid; 861 } 862 863 flow_rule_match_enc_control(rule, &enc_control); 864 865 if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 866 struct flow_match_ipv4_addrs match; 867 868 flow_rule_match_enc_ipv4_addrs(rule, &match); 869 if (ice_tc_set_ipv4(&match, fltr, headers, true)) 870 return -EINVAL; 871 } else if (enc_control.key->addr_type == 872 FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 873 struct flow_match_ipv6_addrs match; 874 875 flow_rule_match_enc_ipv6_addrs(rule, &match); 876 if (ice_tc_set_ipv6(&match, fltr, headers, true)) 877 return -EINVAL; 878 } 879 880 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { 881 struct flow_match_ip match; 882 883 flow_rule_match_enc_ip(rule, &match); 884 headers->l3_key.tos = match.key->tos; 885 headers->l3_key.ttl = match.key->ttl; 886 headers->l3_mask.tos = match.mask->tos; 887 headers->l3_mask.ttl = match.mask->ttl; 888 } 889 890 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) && 891 fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) { 892 struct flow_match_ports match; 893 894 flow_rule_match_enc_ports(rule, &match); 895 896 if (fltr->tunnel_type != TNL_GTPU) { 897 if (ice_tc_set_port(match, fltr, headers, true)) 898 return -EINVAL; 899 } else { 900 if (ice_parse_gtp_type(match, fltr)) 901 return -EINVAL; 902 } 903 } 904 905 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS)) { 906 struct flow_match_enc_opts match; 907 908 flow_rule_match_enc_opts(rule, &match); 909 910 memcpy(&fltr->gtp_pdu_info_keys, &match.key->data[0], 911 sizeof(struct gtp_pdu_session_info)); 912 913 memcpy(&fltr->gtp_pdu_info_masks, &match.mask->data[0], 914 sizeof(struct gtp_pdu_session_info)); 915 916 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_OPTS; 917 } 918 919 return 0; 920 } 921 922 /** 923 * ice_parse_cls_flower - Parse TC flower filters provided by kernel 924 * @vsi: Pointer to the VSI 925 * @filter_dev: Pointer to device on which filter is being added 926 * @f: Pointer to struct flow_cls_offload 927 * @fltr: Pointer to filter structure 928 */ 929 static int 930 ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi, 931 struct flow_cls_offload *f, 932 struct ice_tc_flower_fltr *fltr) 933 { 934 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 935 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 936 u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0; 937 struct flow_dissector *dissector; 938 struct net_device *tunnel_dev; 939 940 dissector = rule->match.dissector; 941 942 if (dissector->used_keys & 943 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | 944 BIT(FLOW_DISSECTOR_KEY_BASIC) | 945 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 946 BIT(FLOW_DISSECTOR_KEY_VLAN) | 947 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 948 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 949 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | 950 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 951 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 952 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 953 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | 954 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) | 955 BIT(FLOW_DISSECTOR_KEY_ENC_IP) | 956 BIT(FLOW_DISSECTOR_KEY_PORTS))) { 957 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used"); 958 return -EOPNOTSUPP; 959 } 960 961 tunnel_dev = ice_get_tunnel_device(filter_dev, rule); 962 if (tunnel_dev) { 963 int err; 964 965 filter_dev = tunnel_dev; 966 967 err = ice_parse_tunnel_attr(filter_dev, rule, fltr); 968 if (err) { 969 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes"); 970 return err; 971 } 972 973 /* header pointers should point to the inner headers, outer 974 * header were already set by ice_parse_tunnel_attr 975 */ 976 headers = &fltr->inner_headers; 977 } else if (dissector->used_keys & 978 (BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 979 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 980 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 981 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS))) { 982 NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel"); 983 return -EOPNOTSUPP; 984 } else { 985 fltr->tunnel_type = TNL_LAST; 986 } 987 988 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 989 struct flow_match_basic match; 990 991 flow_rule_match_basic(rule, &match); 992 993 n_proto_key = ntohs(match.key->n_proto); 994 n_proto_mask = ntohs(match.mask->n_proto); 995 996 if (n_proto_key == ETH_P_ALL || n_proto_key == 0) { 997 n_proto_key = 0; 998 n_proto_mask = 0; 999 } else { 1000 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID; 1001 } 1002 1003 headers->l2_key.n_proto = cpu_to_be16(n_proto_key); 1004 headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask); 1005 headers->l3_key.ip_proto = match.key->ip_proto; 1006 } 1007 1008 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 1009 struct flow_match_eth_addrs match; 1010 1011 flow_rule_match_eth_addrs(rule, &match); 1012 1013 if (!is_zero_ether_addr(match.key->dst)) { 1014 ether_addr_copy(headers->l2_key.dst_mac, 1015 match.key->dst); 1016 ether_addr_copy(headers->l2_mask.dst_mac, 1017 match.mask->dst); 1018 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1019 } 1020 1021 if (!is_zero_ether_addr(match.key->src)) { 1022 ether_addr_copy(headers->l2_key.src_mac, 1023 match.key->src); 1024 ether_addr_copy(headers->l2_mask.src_mac, 1025 match.mask->src); 1026 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC; 1027 } 1028 } 1029 1030 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) || 1031 is_vlan_dev(filter_dev)) { 1032 struct flow_dissector_key_vlan mask; 1033 struct flow_dissector_key_vlan key; 1034 struct flow_match_vlan match; 1035 1036 if (is_vlan_dev(filter_dev)) { 1037 match.key = &key; 1038 match.key->vlan_id = vlan_dev_vlan_id(filter_dev); 1039 match.key->vlan_priority = 0; 1040 match.mask = &mask; 1041 memset(match.mask, 0xff, sizeof(*match.mask)); 1042 match.mask->vlan_priority = 0; 1043 } else { 1044 flow_rule_match_vlan(rule, &match); 1045 } 1046 1047 if (match.mask->vlan_id) { 1048 if (match.mask->vlan_id == VLAN_VID_MASK) { 1049 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN; 1050 } else { 1051 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask"); 1052 return -EINVAL; 1053 } 1054 } 1055 1056 headers->vlan_hdr.vlan_id = 1057 cpu_to_be16(match.key->vlan_id & VLAN_VID_MASK); 1058 if (match.mask->vlan_priority) 1059 headers->vlan_hdr.vlan_prio = match.key->vlan_priority; 1060 } 1061 1062 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 1063 struct flow_match_control match; 1064 1065 flow_rule_match_control(rule, &match); 1066 1067 addr_type = match.key->addr_type; 1068 } 1069 1070 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 1071 struct flow_match_ipv4_addrs match; 1072 1073 flow_rule_match_ipv4_addrs(rule, &match); 1074 if (ice_tc_set_ipv4(&match, fltr, headers, false)) 1075 return -EINVAL; 1076 } 1077 1078 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 1079 struct flow_match_ipv6_addrs match; 1080 1081 flow_rule_match_ipv6_addrs(rule, &match); 1082 if (ice_tc_set_ipv6(&match, fltr, headers, false)) 1083 return -EINVAL; 1084 } 1085 1086 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 1087 struct flow_match_ports match; 1088 1089 flow_rule_match_ports(rule, &match); 1090 if (ice_tc_set_port(match, fltr, headers, false)) 1091 return -EINVAL; 1092 switch (headers->l3_key.ip_proto) { 1093 case IPPROTO_TCP: 1094 case IPPROTO_UDP: 1095 break; 1096 default: 1097 NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported"); 1098 return -EINVAL; 1099 } 1100 } 1101 return 0; 1102 } 1103 1104 /** 1105 * ice_add_switch_fltr - Add TC flower filters 1106 * @vsi: Pointer to VSI 1107 * @fltr: Pointer to struct ice_tc_flower_fltr 1108 * 1109 * Add filter in HW switch block 1110 */ 1111 static int 1112 ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1113 { 1114 if (fltr->action.fltr_act == ICE_FWD_TO_QGRP) 1115 return -EOPNOTSUPP; 1116 1117 if (ice_is_eswitch_mode_switchdev(vsi->back)) 1118 return ice_eswitch_add_tc_fltr(vsi, fltr); 1119 1120 return ice_add_tc_flower_adv_fltr(vsi, fltr); 1121 } 1122 1123 /** 1124 * ice_handle_tclass_action - Support directing to a traffic class 1125 * @vsi: Pointer to VSI 1126 * @cls_flower: Pointer to TC flower offload structure 1127 * @fltr: Pointer to TC flower filter structure 1128 * 1129 * Support directing traffic to a traffic class 1130 */ 1131 static int 1132 ice_handle_tclass_action(struct ice_vsi *vsi, 1133 struct flow_cls_offload *cls_flower, 1134 struct ice_tc_flower_fltr *fltr) 1135 { 1136 int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid); 1137 struct ice_vsi *main_vsi; 1138 1139 if (tc < 0) { 1140 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because specified destination is invalid"); 1141 return -EINVAL; 1142 } 1143 if (!tc) { 1144 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of invalid destination"); 1145 return -EINVAL; 1146 } 1147 1148 if (!(vsi->all_enatc & BIT(tc))) { 1149 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of non-existence destination"); 1150 return -EINVAL; 1151 } 1152 1153 /* Redirect to a TC class or Queue Group */ 1154 main_vsi = ice_get_main_vsi(vsi->back); 1155 if (!main_vsi || !main_vsi->netdev) { 1156 NL_SET_ERR_MSG_MOD(fltr->extack, 1157 "Unable to add filter because of invalid netdevice"); 1158 return -EINVAL; 1159 } 1160 1161 if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) && 1162 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1163 ICE_TC_FLWR_FIELD_SRC_MAC))) { 1164 NL_SET_ERR_MSG_MOD(fltr->extack, 1165 "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination"); 1166 return -EOPNOTSUPP; 1167 } 1168 1169 /* For ADQ, filter must include dest MAC address, otherwise unwanted 1170 * packets with unrelated MAC address get delivered to ADQ VSIs as long 1171 * as remaining filter criteria is satisfied such as dest IP address 1172 * and dest/src L4 port. Following code is trying to handle: 1173 * 1. For non-tunnel, if user specify MAC addresses, use them (means 1174 * this code won't do anything 1175 * 2. For non-tunnel, if user didn't specify MAC address, add implicit 1176 * dest MAC to be lower netdev's active unicast MAC address 1177 * 3. For tunnel, as of now TC-filter through flower classifier doesn't 1178 * have provision for user to specify outer DMAC, hence driver to 1179 * implicitly add outer dest MAC to be lower netdev's active unicast 1180 * MAC address. 1181 */ 1182 if (fltr->tunnel_type != TNL_LAST && 1183 !(fltr->flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC)) 1184 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DST_MAC; 1185 1186 if (fltr->tunnel_type == TNL_LAST && 1187 !(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC)) 1188 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1189 1190 if (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1191 ICE_TC_FLWR_FIELD_ENC_DST_MAC)) { 1192 ether_addr_copy(fltr->outer_headers.l2_key.dst_mac, 1193 vsi->netdev->dev_addr); 1194 memset(fltr->outer_headers.l2_mask.dst_mac, 0xff, ETH_ALEN); 1195 } 1196 1197 /* validate specified dest MAC address, make sure either it belongs to 1198 * lower netdev or any of MACVLAN. MACVLANs MAC address are added as 1199 * unicast MAC filter destined to main VSI. 1200 */ 1201 if (!ice_mac_fltr_exist(&main_vsi->back->hw, 1202 fltr->outer_headers.l2_key.dst_mac, 1203 main_vsi->idx)) { 1204 NL_SET_ERR_MSG_MOD(fltr->extack, 1205 "Unable to add filter because legacy MAC filter for specified destination doesn't exist"); 1206 return -EINVAL; 1207 } 1208 1209 /* Make sure VLAN is already added to main VSI, before allowing ADQ to 1210 * add a VLAN based filter such as MAC + VLAN + L4 port. 1211 */ 1212 if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) { 1213 u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id); 1214 1215 if (!ice_vlan_fltr_exist(&main_vsi->back->hw, vlan_id, 1216 main_vsi->idx)) { 1217 NL_SET_ERR_MSG_MOD(fltr->extack, 1218 "Unable to add filter because legacy VLAN filter for specified destination doesn't exist"); 1219 return -EINVAL; 1220 } 1221 } 1222 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1223 fltr->action.tc_class = tc; 1224 1225 return 0; 1226 } 1227 1228 /** 1229 * ice_parse_tc_flower_actions - Parse the actions for a TC filter 1230 * @vsi: Pointer to VSI 1231 * @cls_flower: Pointer to TC flower offload structure 1232 * @fltr: Pointer to TC flower filter structure 1233 * 1234 * Parse the actions for a TC filter 1235 */ 1236 static int 1237 ice_parse_tc_flower_actions(struct ice_vsi *vsi, 1238 struct flow_cls_offload *cls_flower, 1239 struct ice_tc_flower_fltr *fltr) 1240 { 1241 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); 1242 struct flow_action *flow_action = &rule->action; 1243 struct flow_action_entry *act; 1244 int i; 1245 1246 if (cls_flower->classid) 1247 return ice_handle_tclass_action(vsi, cls_flower, fltr); 1248 1249 if (!flow_action_has_entries(flow_action)) 1250 return -EINVAL; 1251 1252 flow_action_for_each(i, act, flow_action) { 1253 if (ice_is_eswitch_mode_switchdev(vsi->back)) { 1254 int err = ice_eswitch_tc_parse_action(fltr, act); 1255 1256 if (err) 1257 return err; 1258 continue; 1259 } 1260 /* Allow only one rule per filter */ 1261 1262 /* Drop action */ 1263 if (act->id == FLOW_ACTION_DROP) { 1264 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action DROP"); 1265 return -EINVAL; 1266 } 1267 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1268 } 1269 return 0; 1270 } 1271 1272 /** 1273 * ice_del_tc_fltr - deletes a filter from HW table 1274 * @vsi: Pointer to VSI 1275 * @fltr: Pointer to struct ice_tc_flower_fltr 1276 * 1277 * This function deletes a filter from HW table and manages book-keeping 1278 */ 1279 static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1280 { 1281 struct ice_rule_query_data rule_rem; 1282 struct ice_pf *pf = vsi->back; 1283 int err; 1284 1285 rule_rem.rid = fltr->rid; 1286 rule_rem.rule_id = fltr->rule_id; 1287 rule_rem.vsi_handle = fltr->dest_id; 1288 err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem); 1289 if (err) { 1290 if (err == -ENOENT) { 1291 NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist"); 1292 return -ENOENT; 1293 } 1294 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter"); 1295 return -EIO; 1296 } 1297 1298 /* update advanced switch filter count for destination 1299 * VSI if filter destination was VSI 1300 */ 1301 if (fltr->dest_vsi) { 1302 if (fltr->dest_vsi->type == ICE_VSI_CHNL) { 1303 fltr->dest_vsi->num_chnl_fltr--; 1304 1305 /* keeps track of channel filters for PF VSI */ 1306 if (vsi->type == ICE_VSI_PF && 1307 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1308 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 1309 pf->num_dmac_chnl_fltrs--; 1310 } 1311 } 1312 return 0; 1313 } 1314 1315 /** 1316 * ice_add_tc_fltr - adds a TC flower filter 1317 * @netdev: Pointer to netdev 1318 * @vsi: Pointer to VSI 1319 * @f: Pointer to flower offload structure 1320 * @__fltr: Pointer to struct ice_tc_flower_fltr 1321 * 1322 * This function parses TC-flower input fields, parses action, 1323 * and adds a filter. 1324 */ 1325 static int 1326 ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi, 1327 struct flow_cls_offload *f, 1328 struct ice_tc_flower_fltr **__fltr) 1329 { 1330 struct ice_tc_flower_fltr *fltr; 1331 int err; 1332 1333 /* by default, set output to be INVALID */ 1334 *__fltr = NULL; 1335 1336 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL); 1337 if (!fltr) 1338 return -ENOMEM; 1339 1340 fltr->cookie = f->cookie; 1341 fltr->extack = f->common.extack; 1342 fltr->src_vsi = vsi; 1343 INIT_HLIST_NODE(&fltr->tc_flower_node); 1344 1345 err = ice_parse_cls_flower(netdev, vsi, f, fltr); 1346 if (err < 0) 1347 goto err; 1348 1349 err = ice_parse_tc_flower_actions(vsi, f, fltr); 1350 if (err < 0) 1351 goto err; 1352 1353 err = ice_add_switch_fltr(vsi, fltr); 1354 if (err < 0) 1355 goto err; 1356 1357 /* return the newly created filter */ 1358 *__fltr = fltr; 1359 1360 return 0; 1361 err: 1362 kfree(fltr); 1363 return err; 1364 } 1365 1366 /** 1367 * ice_find_tc_flower_fltr - Find the TC flower filter in the list 1368 * @pf: Pointer to PF 1369 * @cookie: filter specific cookie 1370 */ 1371 static struct ice_tc_flower_fltr * 1372 ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie) 1373 { 1374 struct ice_tc_flower_fltr *fltr; 1375 1376 hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node) 1377 if (cookie == fltr->cookie) 1378 return fltr; 1379 1380 return NULL; 1381 } 1382 1383 /** 1384 * ice_add_cls_flower - add TC flower filters 1385 * @netdev: Pointer to filter device 1386 * @vsi: Pointer to VSI 1387 * @cls_flower: Pointer to flower offload structure 1388 */ 1389 int 1390 ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi, 1391 struct flow_cls_offload *cls_flower) 1392 { 1393 struct netlink_ext_ack *extack = cls_flower->common.extack; 1394 struct net_device *vsi_netdev = vsi->netdev; 1395 struct ice_tc_flower_fltr *fltr; 1396 struct ice_pf *pf = vsi->back; 1397 int err; 1398 1399 if (ice_is_reset_in_progress(pf->state)) 1400 return -EBUSY; 1401 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags)) 1402 return -EINVAL; 1403 1404 if (ice_is_port_repr_netdev(netdev)) 1405 vsi_netdev = netdev; 1406 1407 if (!(vsi_netdev->features & NETIF_F_HW_TC) && 1408 !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) { 1409 /* Based on TC indirect notifications from kernel, all ice 1410 * devices get an instance of rule from higher level device. 1411 * Avoid triggering explicit error in this case. 1412 */ 1413 if (netdev == vsi_netdev) 1414 NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again"); 1415 return -EINVAL; 1416 } 1417 1418 /* avoid duplicate entries, if exists - return error */ 1419 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1420 if (fltr) { 1421 NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring"); 1422 return -EEXIST; 1423 } 1424 1425 /* prep and add TC-flower filter in HW */ 1426 err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr); 1427 if (err) 1428 return err; 1429 1430 /* add filter into an ordered list */ 1431 hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list); 1432 return 0; 1433 } 1434 1435 /** 1436 * ice_del_cls_flower - delete TC flower filters 1437 * @vsi: Pointer to VSI 1438 * @cls_flower: Pointer to struct flow_cls_offload 1439 */ 1440 int 1441 ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower) 1442 { 1443 struct ice_tc_flower_fltr *fltr; 1444 struct ice_pf *pf = vsi->back; 1445 int err; 1446 1447 /* find filter */ 1448 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1449 if (!fltr) { 1450 if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) && 1451 hlist_empty(&pf->tc_flower_fltr_list)) 1452 return 0; 1453 1454 NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it"); 1455 return -EINVAL; 1456 } 1457 1458 fltr->extack = cls_flower->common.extack; 1459 /* delete filter from HW */ 1460 err = ice_del_tc_fltr(vsi, fltr); 1461 if (err) 1462 return err; 1463 1464 /* delete filter from an ordered list */ 1465 hlist_del(&fltr->tc_flower_node); 1466 1467 /* free the filter node */ 1468 kfree(fltr); 1469 1470 return 0; 1471 } 1472 1473 /** 1474 * ice_replay_tc_fltrs - replay TC filters 1475 * @pf: pointer to PF struct 1476 */ 1477 void ice_replay_tc_fltrs(struct ice_pf *pf) 1478 { 1479 struct ice_tc_flower_fltr *fltr; 1480 struct hlist_node *node; 1481 1482 hlist_for_each_entry_safe(fltr, node, 1483 &pf->tc_flower_fltr_list, 1484 tc_flower_node) { 1485 fltr->extack = NULL; 1486 ice_add_switch_fltr(fltr->src_vsi, fltr); 1487 } 1488 } 1489