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_IP_TOS | 40 ICE_TC_FLWR_FIELD_ENC_IP_TTL)) 41 lkups_cnt++; 42 43 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) 44 lkups_cnt++; 45 46 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) 47 lkups_cnt++; 48 49 /* are MAC fields specified? */ 50 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | ICE_TC_FLWR_FIELD_SRC_MAC)) 51 lkups_cnt++; 52 53 /* is VLAN specified? */ 54 if (flags & (ICE_TC_FLWR_FIELD_VLAN | ICE_TC_FLWR_FIELD_VLAN_PRIO)) 55 lkups_cnt++; 56 57 /* is CVLAN specified? */ 58 if (flags & (ICE_TC_FLWR_FIELD_CVLAN | ICE_TC_FLWR_FIELD_CVLAN_PRIO)) 59 lkups_cnt++; 60 61 /* are PPPoE options specified? */ 62 if (flags & (ICE_TC_FLWR_FIELD_PPPOE_SESSID | 63 ICE_TC_FLWR_FIELD_PPP_PROTO)) 64 lkups_cnt++; 65 66 /* are IPv[4|6] fields specified? */ 67 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | ICE_TC_FLWR_FIELD_SRC_IPV4 | 68 ICE_TC_FLWR_FIELD_DEST_IPV6 | ICE_TC_FLWR_FIELD_SRC_IPV6)) 69 lkups_cnt++; 70 71 if (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL)) 72 lkups_cnt++; 73 74 /* are L2TPv3 options specified? */ 75 if (flags & ICE_TC_FLWR_FIELD_L2TPV3_SESSID) 76 lkups_cnt++; 77 78 /* is L4 (TCP/UDP/any other L4 protocol fields) specified? */ 79 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | 80 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) 81 lkups_cnt++; 82 83 return lkups_cnt; 84 } 85 86 static enum ice_protocol_type ice_proto_type_from_mac(bool inner) 87 { 88 return inner ? ICE_MAC_IL : ICE_MAC_OFOS; 89 } 90 91 static enum ice_protocol_type ice_proto_type_from_etype(bool inner) 92 { 93 return inner ? ICE_ETYPE_IL : ICE_ETYPE_OL; 94 } 95 96 static enum ice_protocol_type ice_proto_type_from_ipv4(bool inner) 97 { 98 return inner ? ICE_IPV4_IL : ICE_IPV4_OFOS; 99 } 100 101 static enum ice_protocol_type ice_proto_type_from_ipv6(bool inner) 102 { 103 return inner ? ICE_IPV6_IL : ICE_IPV6_OFOS; 104 } 105 106 static enum ice_protocol_type ice_proto_type_from_l4_port(u16 ip_proto) 107 { 108 switch (ip_proto) { 109 case IPPROTO_TCP: 110 return ICE_TCP_IL; 111 case IPPROTO_UDP: 112 return ICE_UDP_ILOS; 113 } 114 115 return 0; 116 } 117 118 static enum ice_protocol_type 119 ice_proto_type_from_tunnel(enum ice_tunnel_type type) 120 { 121 switch (type) { 122 case TNL_VXLAN: 123 return ICE_VXLAN; 124 case TNL_GENEVE: 125 return ICE_GENEVE; 126 case TNL_GRETAP: 127 return ICE_NVGRE; 128 case TNL_GTPU: 129 /* NO_PAY profiles will not work with GTP-U */ 130 return ICE_GTP; 131 case TNL_GTPC: 132 return ICE_GTP_NO_PAY; 133 default: 134 return 0; 135 } 136 } 137 138 static enum ice_sw_tunnel_type 139 ice_sw_type_from_tunnel(enum ice_tunnel_type type) 140 { 141 switch (type) { 142 case TNL_VXLAN: 143 return ICE_SW_TUN_VXLAN; 144 case TNL_GENEVE: 145 return ICE_SW_TUN_GENEVE; 146 case TNL_GRETAP: 147 return ICE_SW_TUN_NVGRE; 148 case TNL_GTPU: 149 return ICE_SW_TUN_GTPU; 150 case TNL_GTPC: 151 return ICE_SW_TUN_GTPC; 152 default: 153 return ICE_NON_TUN; 154 } 155 } 156 157 static u16 ice_check_supported_vlan_tpid(u16 vlan_tpid) 158 { 159 switch (vlan_tpid) { 160 case ETH_P_8021Q: 161 case ETH_P_8021AD: 162 case ETH_P_QINQ1: 163 return vlan_tpid; 164 default: 165 return 0; 166 } 167 } 168 169 static int 170 ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr, 171 struct ice_adv_lkup_elem *list) 172 { 173 struct ice_tc_flower_lyr_2_4_hdrs *hdr = &fltr->outer_headers; 174 int i = 0; 175 176 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) { 177 u32 tenant_id; 178 179 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type); 180 switch (fltr->tunnel_type) { 181 case TNL_VXLAN: 182 case TNL_GENEVE: 183 tenant_id = be32_to_cpu(fltr->tenant_id) << 8; 184 list[i].h_u.tnl_hdr.vni = cpu_to_be32(tenant_id); 185 memcpy(&list[i].m_u.tnl_hdr.vni, "\xff\xff\xff\x00", 4); 186 i++; 187 break; 188 case TNL_GRETAP: 189 list[i].h_u.nvgre_hdr.tni_flow = fltr->tenant_id; 190 memcpy(&list[i].m_u.nvgre_hdr.tni_flow, 191 "\xff\xff\xff\xff", 4); 192 i++; 193 break; 194 case TNL_GTPC: 195 case TNL_GTPU: 196 list[i].h_u.gtp_hdr.teid = fltr->tenant_id; 197 memcpy(&list[i].m_u.gtp_hdr.teid, 198 "\xff\xff\xff\xff", 4); 199 i++; 200 break; 201 default: 202 break; 203 } 204 } 205 206 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC) { 207 list[i].type = ice_proto_type_from_mac(false); 208 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr, 209 hdr->l2_key.dst_mac); 210 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr, 211 hdr->l2_mask.dst_mac); 212 i++; 213 } 214 215 if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS && 216 (fltr->tunnel_type == TNL_GTPU || fltr->tunnel_type == TNL_GTPC)) { 217 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type); 218 219 if (fltr->gtp_pdu_info_masks.pdu_type) { 220 list[i].h_u.gtp_hdr.pdu_type = 221 fltr->gtp_pdu_info_keys.pdu_type << 4; 222 memcpy(&list[i].m_u.gtp_hdr.pdu_type, "\xf0", 1); 223 } 224 225 if (fltr->gtp_pdu_info_masks.qfi) { 226 list[i].h_u.gtp_hdr.qfi = fltr->gtp_pdu_info_keys.qfi; 227 memcpy(&list[i].m_u.gtp_hdr.qfi, "\x3f", 1); 228 } 229 230 i++; 231 } 232 233 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 234 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4)) { 235 list[i].type = ice_proto_type_from_ipv4(false); 236 237 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV4) { 238 list[i].h_u.ipv4_hdr.src_addr = hdr->l3_key.src_ipv4; 239 list[i].m_u.ipv4_hdr.src_addr = hdr->l3_mask.src_ipv4; 240 } 241 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV4) { 242 list[i].h_u.ipv4_hdr.dst_addr = hdr->l3_key.dst_ipv4; 243 list[i].m_u.ipv4_hdr.dst_addr = hdr->l3_mask.dst_ipv4; 244 } 245 i++; 246 } 247 248 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 249 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) { 250 list[i].type = ice_proto_type_from_ipv6(false); 251 252 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV6) { 253 memcpy(&list[i].h_u.ipv6_hdr.src_addr, 254 &hdr->l3_key.src_ipv6_addr, 255 sizeof(hdr->l3_key.src_ipv6_addr)); 256 memcpy(&list[i].m_u.ipv6_hdr.src_addr, 257 &hdr->l3_mask.src_ipv6_addr, 258 sizeof(hdr->l3_mask.src_ipv6_addr)); 259 } 260 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV6) { 261 memcpy(&list[i].h_u.ipv6_hdr.dst_addr, 262 &hdr->l3_key.dst_ipv6_addr, 263 sizeof(hdr->l3_key.dst_ipv6_addr)); 264 memcpy(&list[i].m_u.ipv6_hdr.dst_addr, 265 &hdr->l3_mask.dst_ipv6_addr, 266 sizeof(hdr->l3_mask.dst_ipv6_addr)); 267 } 268 i++; 269 } 270 271 if (fltr->inner_headers.l2_key.n_proto == htons(ETH_P_IP) && 272 (flags & (ICE_TC_FLWR_FIELD_ENC_IP_TOS | 273 ICE_TC_FLWR_FIELD_ENC_IP_TTL))) { 274 list[i].type = ice_proto_type_from_ipv4(false); 275 276 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TOS) { 277 list[i].h_u.ipv4_hdr.tos = hdr->l3_key.tos; 278 list[i].m_u.ipv4_hdr.tos = hdr->l3_mask.tos; 279 } 280 281 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TTL) { 282 list[i].h_u.ipv4_hdr.time_to_live = hdr->l3_key.ttl; 283 list[i].m_u.ipv4_hdr.time_to_live = hdr->l3_mask.ttl; 284 } 285 286 i++; 287 } 288 289 if (fltr->inner_headers.l2_key.n_proto == htons(ETH_P_IPV6) && 290 (flags & (ICE_TC_FLWR_FIELD_ENC_IP_TOS | 291 ICE_TC_FLWR_FIELD_ENC_IP_TTL))) { 292 struct ice_ipv6_hdr *hdr_h, *hdr_m; 293 294 hdr_h = &list[i].h_u.ipv6_hdr; 295 hdr_m = &list[i].m_u.ipv6_hdr; 296 list[i].type = ice_proto_type_from_ipv6(false); 297 298 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TOS) { 299 be32p_replace_bits(&hdr_h->be_ver_tc_flow, 300 hdr->l3_key.tos, 301 ICE_IPV6_HDR_TC_MASK); 302 be32p_replace_bits(&hdr_m->be_ver_tc_flow, 303 hdr->l3_mask.tos, 304 ICE_IPV6_HDR_TC_MASK); 305 } 306 307 if (flags & ICE_TC_FLWR_FIELD_ENC_IP_TTL) { 308 hdr_h->hop_limit = hdr->l3_key.ttl; 309 hdr_m->hop_limit = hdr->l3_mask.ttl; 310 } 311 312 i++; 313 } 314 315 if ((flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) && 316 hdr->l3_key.ip_proto == IPPROTO_UDP) { 317 list[i].type = ICE_UDP_OF; 318 list[i].h_u.l4_hdr.dst_port = hdr->l4_key.dst_port; 319 list[i].m_u.l4_hdr.dst_port = hdr->l4_mask.dst_port; 320 i++; 321 } 322 323 return i; 324 } 325 326 /** 327 * ice_tc_fill_rules - fill filter rules based on TC fltr 328 * @hw: pointer to HW structure 329 * @flags: tc flower field flags 330 * @tc_fltr: pointer to TC flower filter 331 * @list: list of advance rule elements 332 * @rule_info: pointer to information about rule 333 * @l4_proto: pointer to information such as L4 proto type 334 * 335 * Fill ice_adv_lkup_elem list based on TC flower flags and 336 * TC flower headers. This list should be used to add 337 * advance filter in hardware. 338 */ 339 static int 340 ice_tc_fill_rules(struct ice_hw *hw, u32 flags, 341 struct ice_tc_flower_fltr *tc_fltr, 342 struct ice_adv_lkup_elem *list, 343 struct ice_adv_rule_info *rule_info, 344 u16 *l4_proto) 345 { 346 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 347 bool inner = false; 348 u16 vlan_tpid = 0; 349 int i = 0; 350 351 rule_info->vlan_type = vlan_tpid; 352 353 rule_info->tun_type = ice_sw_type_from_tunnel(tc_fltr->tunnel_type); 354 if (tc_fltr->tunnel_type != TNL_LAST) { 355 i = ice_tc_fill_tunnel_outer(flags, tc_fltr, list); 356 357 headers = &tc_fltr->inner_headers; 358 inner = true; 359 } 360 361 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) { 362 list[i].type = ice_proto_type_from_etype(inner); 363 list[i].h_u.ethertype.ethtype_id = headers->l2_key.n_proto; 364 list[i].m_u.ethertype.ethtype_id = headers->l2_mask.n_proto; 365 i++; 366 } 367 368 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 369 ICE_TC_FLWR_FIELD_SRC_MAC)) { 370 struct ice_tc_l2_hdr *l2_key, *l2_mask; 371 372 l2_key = &headers->l2_key; 373 l2_mask = &headers->l2_mask; 374 375 list[i].type = ice_proto_type_from_mac(inner); 376 if (flags & ICE_TC_FLWR_FIELD_DST_MAC) { 377 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr, 378 l2_key->dst_mac); 379 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr, 380 l2_mask->dst_mac); 381 } 382 if (flags & ICE_TC_FLWR_FIELD_SRC_MAC) { 383 ether_addr_copy(list[i].h_u.eth_hdr.src_addr, 384 l2_key->src_mac); 385 ether_addr_copy(list[i].m_u.eth_hdr.src_addr, 386 l2_mask->src_mac); 387 } 388 i++; 389 } 390 391 /* copy VLAN info */ 392 if (flags & (ICE_TC_FLWR_FIELD_VLAN | ICE_TC_FLWR_FIELD_VLAN_PRIO)) { 393 vlan_tpid = be16_to_cpu(headers->vlan_hdr.vlan_tpid); 394 rule_info->vlan_type = 395 ice_check_supported_vlan_tpid(vlan_tpid); 396 397 if (flags & ICE_TC_FLWR_FIELD_CVLAN) 398 list[i].type = ICE_VLAN_EX; 399 else 400 list[i].type = ICE_VLAN_OFOS; 401 402 if (flags & ICE_TC_FLWR_FIELD_VLAN) { 403 list[i].h_u.vlan_hdr.vlan = headers->vlan_hdr.vlan_id; 404 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0x0FFF); 405 } 406 407 if (flags & ICE_TC_FLWR_FIELD_VLAN_PRIO) { 408 if (flags & ICE_TC_FLWR_FIELD_VLAN) { 409 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xEFFF); 410 } else { 411 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xE000); 412 list[i].h_u.vlan_hdr.vlan = 0; 413 } 414 list[i].h_u.vlan_hdr.vlan |= 415 headers->vlan_hdr.vlan_prio; 416 } 417 418 i++; 419 } 420 421 if (flags & (ICE_TC_FLWR_FIELD_CVLAN | ICE_TC_FLWR_FIELD_CVLAN_PRIO)) { 422 list[i].type = ICE_VLAN_IN; 423 424 if (flags & ICE_TC_FLWR_FIELD_CVLAN) { 425 list[i].h_u.vlan_hdr.vlan = headers->cvlan_hdr.vlan_id; 426 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0x0FFF); 427 } 428 429 if (flags & ICE_TC_FLWR_FIELD_CVLAN_PRIO) { 430 if (flags & ICE_TC_FLWR_FIELD_CVLAN) { 431 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xEFFF); 432 } else { 433 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xE000); 434 list[i].h_u.vlan_hdr.vlan = 0; 435 } 436 list[i].h_u.vlan_hdr.vlan |= 437 headers->cvlan_hdr.vlan_prio; 438 } 439 440 i++; 441 } 442 443 if (flags & (ICE_TC_FLWR_FIELD_PPPOE_SESSID | 444 ICE_TC_FLWR_FIELD_PPP_PROTO)) { 445 struct ice_pppoe_hdr *vals, *masks; 446 447 vals = &list[i].h_u.pppoe_hdr; 448 masks = &list[i].m_u.pppoe_hdr; 449 450 list[i].type = ICE_PPPOE; 451 452 if (flags & ICE_TC_FLWR_FIELD_PPPOE_SESSID) { 453 vals->session_id = headers->pppoe_hdr.session_id; 454 masks->session_id = cpu_to_be16(0xFFFF); 455 } 456 457 if (flags & ICE_TC_FLWR_FIELD_PPP_PROTO) { 458 vals->ppp_prot_id = headers->pppoe_hdr.ppp_proto; 459 masks->ppp_prot_id = cpu_to_be16(0xFFFF); 460 } 461 462 i++; 463 } 464 465 /* copy L3 (IPv[4|6]: src, dest) address */ 466 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | 467 ICE_TC_FLWR_FIELD_SRC_IPV4)) { 468 struct ice_tc_l3_hdr *l3_key, *l3_mask; 469 470 list[i].type = ice_proto_type_from_ipv4(inner); 471 l3_key = &headers->l3_key; 472 l3_mask = &headers->l3_mask; 473 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV4) { 474 list[i].h_u.ipv4_hdr.dst_addr = l3_key->dst_ipv4; 475 list[i].m_u.ipv4_hdr.dst_addr = l3_mask->dst_ipv4; 476 } 477 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV4) { 478 list[i].h_u.ipv4_hdr.src_addr = l3_key->src_ipv4; 479 list[i].m_u.ipv4_hdr.src_addr = l3_mask->src_ipv4; 480 } 481 i++; 482 } else if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV6 | 483 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 484 struct ice_ipv6_hdr *ipv6_hdr, *ipv6_mask; 485 struct ice_tc_l3_hdr *l3_key, *l3_mask; 486 487 list[i].type = ice_proto_type_from_ipv6(inner); 488 ipv6_hdr = &list[i].h_u.ipv6_hdr; 489 ipv6_mask = &list[i].m_u.ipv6_hdr; 490 l3_key = &headers->l3_key; 491 l3_mask = &headers->l3_mask; 492 493 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV6) { 494 memcpy(&ipv6_hdr->dst_addr, &l3_key->dst_ipv6_addr, 495 sizeof(l3_key->dst_ipv6_addr)); 496 memcpy(&ipv6_mask->dst_addr, &l3_mask->dst_ipv6_addr, 497 sizeof(l3_mask->dst_ipv6_addr)); 498 } 499 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV6) { 500 memcpy(&ipv6_hdr->src_addr, &l3_key->src_ipv6_addr, 501 sizeof(l3_key->src_ipv6_addr)); 502 memcpy(&ipv6_mask->src_addr, &l3_mask->src_ipv6_addr, 503 sizeof(l3_mask->src_ipv6_addr)); 504 } 505 i++; 506 } 507 508 if (headers->l2_key.n_proto == htons(ETH_P_IP) && 509 (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL))) { 510 list[i].type = ice_proto_type_from_ipv4(inner); 511 512 if (flags & ICE_TC_FLWR_FIELD_IP_TOS) { 513 list[i].h_u.ipv4_hdr.tos = headers->l3_key.tos; 514 list[i].m_u.ipv4_hdr.tos = headers->l3_mask.tos; 515 } 516 517 if (flags & ICE_TC_FLWR_FIELD_IP_TTL) { 518 list[i].h_u.ipv4_hdr.time_to_live = 519 headers->l3_key.ttl; 520 list[i].m_u.ipv4_hdr.time_to_live = 521 headers->l3_mask.ttl; 522 } 523 524 i++; 525 } 526 527 if (headers->l2_key.n_proto == htons(ETH_P_IPV6) && 528 (flags & (ICE_TC_FLWR_FIELD_IP_TOS | ICE_TC_FLWR_FIELD_IP_TTL))) { 529 struct ice_ipv6_hdr *hdr_h, *hdr_m; 530 531 hdr_h = &list[i].h_u.ipv6_hdr; 532 hdr_m = &list[i].m_u.ipv6_hdr; 533 list[i].type = ice_proto_type_from_ipv6(inner); 534 535 if (flags & ICE_TC_FLWR_FIELD_IP_TOS) { 536 be32p_replace_bits(&hdr_h->be_ver_tc_flow, 537 headers->l3_key.tos, 538 ICE_IPV6_HDR_TC_MASK); 539 be32p_replace_bits(&hdr_m->be_ver_tc_flow, 540 headers->l3_mask.tos, 541 ICE_IPV6_HDR_TC_MASK); 542 } 543 544 if (flags & ICE_TC_FLWR_FIELD_IP_TTL) { 545 hdr_h->hop_limit = headers->l3_key.ttl; 546 hdr_m->hop_limit = headers->l3_mask.ttl; 547 } 548 549 i++; 550 } 551 552 if (flags & ICE_TC_FLWR_FIELD_L2TPV3_SESSID) { 553 list[i].type = ICE_L2TPV3; 554 555 list[i].h_u.l2tpv3_sess_hdr.session_id = 556 headers->l2tpv3_hdr.session_id; 557 list[i].m_u.l2tpv3_sess_hdr.session_id = 558 cpu_to_be32(0xFFFFFFFF); 559 560 i++; 561 } 562 563 /* copy L4 (src, dest) port */ 564 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | 565 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) { 566 struct ice_tc_l4_hdr *l4_key, *l4_mask; 567 568 list[i].type = ice_proto_type_from_l4_port(headers->l3_key.ip_proto); 569 l4_key = &headers->l4_key; 570 l4_mask = &headers->l4_mask; 571 572 if (flags & ICE_TC_FLWR_FIELD_DEST_L4_PORT) { 573 list[i].h_u.l4_hdr.dst_port = l4_key->dst_port; 574 list[i].m_u.l4_hdr.dst_port = l4_mask->dst_port; 575 } 576 if (flags & ICE_TC_FLWR_FIELD_SRC_L4_PORT) { 577 list[i].h_u.l4_hdr.src_port = l4_key->src_port; 578 list[i].m_u.l4_hdr.src_port = l4_mask->src_port; 579 } 580 i++; 581 } 582 583 return i; 584 } 585 586 /** 587 * ice_tc_tun_get_type - get the tunnel type 588 * @tunnel_dev: ptr to tunnel device 589 * 590 * This function detects appropriate tunnel_type if specified device is 591 * tunnel device such as VXLAN/Geneve 592 */ 593 static int ice_tc_tun_get_type(struct net_device *tunnel_dev) 594 { 595 if (netif_is_vxlan(tunnel_dev)) 596 return TNL_VXLAN; 597 if (netif_is_geneve(tunnel_dev)) 598 return TNL_GENEVE; 599 if (netif_is_gretap(tunnel_dev) || 600 netif_is_ip6gretap(tunnel_dev)) 601 return TNL_GRETAP; 602 603 /* Assume GTP-U by default in case of GTP netdev. 604 * GTP-C may be selected later, based on enc_dst_port. 605 */ 606 if (netif_is_gtp(tunnel_dev)) 607 return TNL_GTPU; 608 return TNL_LAST; 609 } 610 611 bool ice_is_tunnel_supported(struct net_device *dev) 612 { 613 return ice_tc_tun_get_type(dev) != TNL_LAST; 614 } 615 616 static int 617 ice_eswitch_tc_parse_action(struct ice_tc_flower_fltr *fltr, 618 struct flow_action_entry *act) 619 { 620 struct ice_repr *repr; 621 622 switch (act->id) { 623 case FLOW_ACTION_DROP: 624 fltr->action.fltr_act = ICE_DROP_PACKET; 625 break; 626 627 case FLOW_ACTION_REDIRECT: 628 fltr->action.fltr_act = ICE_FWD_TO_VSI; 629 630 if (ice_is_port_repr_netdev(act->dev)) { 631 repr = ice_netdev_to_repr(act->dev); 632 633 fltr->dest_vsi = repr->src_vsi; 634 fltr->direction = ICE_ESWITCH_FLTR_INGRESS; 635 } else if (netif_is_ice(act->dev) || 636 ice_is_tunnel_supported(act->dev)) { 637 fltr->direction = ICE_ESWITCH_FLTR_EGRESS; 638 } else { 639 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported netdevice in switchdev mode"); 640 return -EINVAL; 641 } 642 643 break; 644 645 default: 646 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action in switchdev mode"); 647 return -EINVAL; 648 } 649 650 return 0; 651 } 652 653 static int 654 ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 655 { 656 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 657 struct ice_adv_rule_info rule_info = { 0 }; 658 struct ice_rule_query_data rule_added; 659 struct ice_hw *hw = &vsi->back->hw; 660 struct ice_adv_lkup_elem *list; 661 u32 flags = fltr->flags; 662 int lkups_cnt; 663 int ret; 664 int i; 665 666 if (!flags || (flags & ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT)) { 667 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported encap field(s)"); 668 return -EOPNOTSUPP; 669 } 670 671 lkups_cnt = ice_tc_count_lkups(flags, headers, fltr); 672 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 673 if (!list) 674 return -ENOMEM; 675 676 i = ice_tc_fill_rules(hw, flags, fltr, list, &rule_info, NULL); 677 if (i != lkups_cnt) { 678 ret = -EINVAL; 679 goto exit; 680 } 681 682 /* egress traffic is always redirect to uplink */ 683 if (fltr->direction == ICE_ESWITCH_FLTR_EGRESS) 684 fltr->dest_vsi = vsi->back->switchdev.uplink_vsi; 685 686 rule_info.sw_act.fltr_act = fltr->action.fltr_act; 687 if (fltr->action.fltr_act != ICE_DROP_PACKET) 688 rule_info.sw_act.vsi_handle = fltr->dest_vsi->idx; 689 /* For now, making priority to be highest, and it also becomes 690 * the priority for recipe which will get created as a result of 691 * new extraction sequence based on input set. 692 * Priority '7' is max val for switch recipe, higher the number 693 * results into order of switch rule evaluation. 694 */ 695 rule_info.priority = 7; 696 697 if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) { 698 rule_info.sw_act.flag |= ICE_FLTR_RX; 699 rule_info.sw_act.src = hw->pf_id; 700 rule_info.rx = true; 701 } else { 702 rule_info.sw_act.flag |= ICE_FLTR_TX; 703 rule_info.sw_act.src = vsi->idx; 704 rule_info.rx = false; 705 rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE; 706 rule_info.flags_info.act_valid = true; 707 } 708 709 /* specify the cookie as filter_rule_id */ 710 rule_info.fltr_rule_id = fltr->cookie; 711 712 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 713 if (ret == -EEXIST) { 714 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist"); 715 ret = -EINVAL; 716 goto exit; 717 } else if (ret) { 718 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error"); 719 goto exit; 720 } 721 722 /* store the output params, which are needed later for removing 723 * advanced switch filter 724 */ 725 fltr->rid = rule_added.rid; 726 fltr->rule_id = rule_added.rule_id; 727 fltr->dest_id = rule_added.vsi_handle; 728 729 exit: 730 kfree(list); 731 return ret; 732 } 733 734 /** 735 * ice_add_tc_flower_adv_fltr - add appropriate filter rules 736 * @vsi: Pointer to VSI 737 * @tc_fltr: Pointer to TC flower filter structure 738 * 739 * based on filter parameters using Advance recipes supported 740 * by OS package. 741 */ 742 static int 743 ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi, 744 struct ice_tc_flower_fltr *tc_fltr) 745 { 746 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 747 struct ice_adv_rule_info rule_info = {0}; 748 struct ice_rule_query_data rule_added; 749 struct ice_adv_lkup_elem *list; 750 struct ice_pf *pf = vsi->back; 751 struct ice_hw *hw = &pf->hw; 752 u32 flags = tc_fltr->flags; 753 struct ice_vsi *ch_vsi; 754 struct device *dev; 755 u16 lkups_cnt = 0; 756 u16 l4_proto = 0; 757 int ret = 0; 758 u16 i = 0; 759 760 dev = ice_pf_to_dev(pf); 761 if (ice_is_safe_mode(pf)) { 762 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode"); 763 return -EOPNOTSUPP; 764 } 765 766 if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | 767 ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 768 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 769 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 770 ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) { 771 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)"); 772 return -EOPNOTSUPP; 773 } 774 775 /* get the channel (aka ADQ VSI) */ 776 if (tc_fltr->dest_vsi) 777 ch_vsi = tc_fltr->dest_vsi; 778 else 779 ch_vsi = vsi->tc_map_vsi[tc_fltr->action.tc_class]; 780 781 lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr); 782 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 783 if (!list) 784 return -ENOMEM; 785 786 i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto); 787 if (i != lkups_cnt) { 788 ret = -EINVAL; 789 goto exit; 790 } 791 792 rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act; 793 if (tc_fltr->action.tc_class >= ICE_CHNL_START_TC) { 794 if (!ch_vsi) { 795 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because specified destination doesn't exist"); 796 ret = -EINVAL; 797 goto exit; 798 } 799 800 rule_info.sw_act.fltr_act = ICE_FWD_TO_VSI; 801 rule_info.sw_act.vsi_handle = ch_vsi->idx; 802 rule_info.priority = 7; 803 rule_info.sw_act.src = hw->pf_id; 804 rule_info.rx = true; 805 dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n", 806 tc_fltr->action.tc_class, 807 rule_info.sw_act.vsi_handle, lkups_cnt); 808 } else { 809 rule_info.sw_act.flag |= ICE_FLTR_TX; 810 rule_info.sw_act.src = vsi->idx; 811 rule_info.rx = false; 812 } 813 814 /* specify the cookie as filter_rule_id */ 815 rule_info.fltr_rule_id = tc_fltr->cookie; 816 817 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 818 if (ret == -EEXIST) { 819 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 820 "Unable to add filter because it already exist"); 821 ret = -EINVAL; 822 goto exit; 823 } else if (ret) { 824 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 825 "Unable to add filter due to error"); 826 goto exit; 827 } 828 829 /* store the output params, which are needed later for removing 830 * advanced switch filter 831 */ 832 tc_fltr->rid = rule_added.rid; 833 tc_fltr->rule_id = rule_added.rule_id; 834 if (tc_fltr->action.tc_class > 0 && ch_vsi) { 835 /* For PF ADQ, VSI type is set as ICE_VSI_CHNL, and 836 * for PF ADQ filter, it is not yet set in tc_fltr, 837 * hence store the dest_vsi ptr in tc_fltr 838 */ 839 if (ch_vsi->type == ICE_VSI_CHNL) 840 tc_fltr->dest_vsi = ch_vsi; 841 /* keep track of advanced switch filter for 842 * destination VSI (channel VSI) 843 */ 844 ch_vsi->num_chnl_fltr++; 845 /* in this case, dest_id is VSI handle (sw handle) */ 846 tc_fltr->dest_id = rule_added.vsi_handle; 847 848 /* keeps track of channel filters for PF VSI */ 849 if (vsi->type == ICE_VSI_PF && 850 (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 851 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 852 pf->num_dmac_chnl_fltrs++; 853 } 854 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x) for TC %u, rid %u, rule_id %u, vsi_idx %u\n", 855 lkups_cnt, flags, 856 tc_fltr->action.tc_class, rule_added.rid, 857 rule_added.rule_id, rule_added.vsi_handle); 858 exit: 859 kfree(list); 860 return ret; 861 } 862 863 /** 864 * ice_tc_set_pppoe - Parse PPPoE fields from TC flower filter 865 * @match: Pointer to flow match structure 866 * @fltr: Pointer to filter structure 867 * @headers: Pointer to outer header fields 868 * @returns PPP protocol used in filter (ppp_ses or ppp_disc) 869 */ 870 static u16 871 ice_tc_set_pppoe(struct flow_match_pppoe *match, 872 struct ice_tc_flower_fltr *fltr, 873 struct ice_tc_flower_lyr_2_4_hdrs *headers) 874 { 875 if (match->mask->session_id) { 876 fltr->flags |= ICE_TC_FLWR_FIELD_PPPOE_SESSID; 877 headers->pppoe_hdr.session_id = match->key->session_id; 878 } 879 880 if (match->mask->ppp_proto) { 881 fltr->flags |= ICE_TC_FLWR_FIELD_PPP_PROTO; 882 headers->pppoe_hdr.ppp_proto = match->key->ppp_proto; 883 } 884 885 return be16_to_cpu(match->key->type); 886 } 887 888 /** 889 * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter 890 * @match: Pointer to flow match structure 891 * @fltr: Pointer to filter structure 892 * @headers: inner or outer header fields 893 * @is_encap: set true for tunnel IPv4 address 894 */ 895 static int 896 ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match, 897 struct ice_tc_flower_fltr *fltr, 898 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 899 { 900 if (match->key->dst) { 901 if (is_encap) 902 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4; 903 else 904 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4; 905 headers->l3_key.dst_ipv4 = match->key->dst; 906 headers->l3_mask.dst_ipv4 = match->mask->dst; 907 } 908 if (match->key->src) { 909 if (is_encap) 910 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4; 911 else 912 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4; 913 headers->l3_key.src_ipv4 = match->key->src; 914 headers->l3_mask.src_ipv4 = match->mask->src; 915 } 916 return 0; 917 } 918 919 /** 920 * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter 921 * @match: Pointer to flow match structure 922 * @fltr: Pointer to filter structure 923 * @headers: inner or outer header fields 924 * @is_encap: set true for tunnel IPv6 address 925 */ 926 static int 927 ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match, 928 struct ice_tc_flower_fltr *fltr, 929 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 930 { 931 struct ice_tc_l3_hdr *l3_key, *l3_mask; 932 933 /* src and dest IPV6 address should not be LOOPBACK 934 * (0:0:0:0:0:0:0:1), which can be represented as ::1 935 */ 936 if (ipv6_addr_loopback(&match->key->dst) || 937 ipv6_addr_loopback(&match->key->src)) { 938 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK"); 939 return -EINVAL; 940 } 941 /* if src/dest IPv6 address is *,* error */ 942 if (ipv6_addr_any(&match->mask->dst) && 943 ipv6_addr_any(&match->mask->src)) { 944 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any"); 945 return -EINVAL; 946 } 947 if (!ipv6_addr_any(&match->mask->dst)) { 948 if (is_encap) 949 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6; 950 else 951 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6; 952 } 953 if (!ipv6_addr_any(&match->mask->src)) { 954 if (is_encap) 955 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6; 956 else 957 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6; 958 } 959 960 l3_key = &headers->l3_key; 961 l3_mask = &headers->l3_mask; 962 963 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 964 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 965 memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr, 966 sizeof(match->key->src.s6_addr)); 967 memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr, 968 sizeof(match->mask->src.s6_addr)); 969 } 970 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 971 ICE_TC_FLWR_FIELD_DEST_IPV6)) { 972 memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr, 973 sizeof(match->key->dst.s6_addr)); 974 memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr, 975 sizeof(match->mask->dst.s6_addr)); 976 } 977 978 return 0; 979 } 980 981 /** 982 * ice_tc_set_tos_ttl - Parse IP ToS/TTL from TC flower filter 983 * @match: Pointer to flow match structure 984 * @fltr: Pointer to filter structure 985 * @headers: inner or outer header fields 986 * @is_encap: set true for tunnel 987 */ 988 static void 989 ice_tc_set_tos_ttl(struct flow_match_ip *match, 990 struct ice_tc_flower_fltr *fltr, 991 struct ice_tc_flower_lyr_2_4_hdrs *headers, 992 bool is_encap) 993 { 994 if (match->mask->tos) { 995 if (is_encap) 996 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TOS; 997 else 998 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TOS; 999 1000 headers->l3_key.tos = match->key->tos; 1001 headers->l3_mask.tos = match->mask->tos; 1002 } 1003 1004 if (match->mask->ttl) { 1005 if (is_encap) 1006 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TTL; 1007 else 1008 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TTL; 1009 1010 headers->l3_key.ttl = match->key->ttl; 1011 headers->l3_mask.ttl = match->mask->ttl; 1012 } 1013 } 1014 1015 /** 1016 * ice_tc_set_port - Parse ports from TC flower filter 1017 * @match: Flow match structure 1018 * @fltr: Pointer to filter structure 1019 * @headers: inner or outer header fields 1020 * @is_encap: set true for tunnel port 1021 */ 1022 static int 1023 ice_tc_set_port(struct flow_match_ports match, 1024 struct ice_tc_flower_fltr *fltr, 1025 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 1026 { 1027 if (match.key->dst) { 1028 if (is_encap) 1029 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT; 1030 else 1031 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT; 1032 1033 headers->l4_key.dst_port = match.key->dst; 1034 headers->l4_mask.dst_port = match.mask->dst; 1035 } 1036 if (match.key->src) { 1037 if (is_encap) 1038 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT; 1039 else 1040 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT; 1041 1042 headers->l4_key.src_port = match.key->src; 1043 headers->l4_mask.src_port = match.mask->src; 1044 } 1045 return 0; 1046 } 1047 1048 static struct net_device * 1049 ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule) 1050 { 1051 struct flow_action_entry *act; 1052 int i; 1053 1054 if (ice_is_tunnel_supported(dev)) 1055 return dev; 1056 1057 flow_action_for_each(i, act, &rule->action) { 1058 if (act->id == FLOW_ACTION_REDIRECT && 1059 ice_is_tunnel_supported(act->dev)) 1060 return act->dev; 1061 } 1062 1063 return NULL; 1064 } 1065 1066 /** 1067 * ice_parse_gtp_type - Sets GTP tunnel type to GTP-U or GTP-C 1068 * @match: Flow match structure 1069 * @fltr: Pointer to filter structure 1070 * 1071 * GTP-C/GTP-U is selected based on destination port number (enc_dst_port). 1072 * Before calling this funtcion, fltr->tunnel_type should be set to TNL_GTPU, 1073 * therefore making GTP-U the default choice (when destination port number is 1074 * not specified). 1075 */ 1076 static int 1077 ice_parse_gtp_type(struct flow_match_ports match, 1078 struct ice_tc_flower_fltr *fltr) 1079 { 1080 u16 dst_port; 1081 1082 if (match.key->dst) { 1083 dst_port = be16_to_cpu(match.key->dst); 1084 1085 switch (dst_port) { 1086 case 2152: 1087 break; 1088 case 2123: 1089 fltr->tunnel_type = TNL_GTPC; 1090 break; 1091 default: 1092 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported GTP port number"); 1093 return -EINVAL; 1094 } 1095 } 1096 1097 return 0; 1098 } 1099 1100 static int 1101 ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule, 1102 struct ice_tc_flower_fltr *fltr) 1103 { 1104 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 1105 struct flow_match_control enc_control; 1106 1107 fltr->tunnel_type = ice_tc_tun_get_type(dev); 1108 headers->l3_key.ip_proto = IPPROTO_UDP; 1109 1110 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 1111 struct flow_match_enc_keyid enc_keyid; 1112 1113 flow_rule_match_enc_keyid(rule, &enc_keyid); 1114 1115 if (!enc_keyid.mask->keyid || 1116 enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32)) 1117 return -EINVAL; 1118 1119 fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID; 1120 fltr->tenant_id = enc_keyid.key->keyid; 1121 } 1122 1123 flow_rule_match_enc_control(rule, &enc_control); 1124 1125 if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 1126 struct flow_match_ipv4_addrs match; 1127 1128 flow_rule_match_enc_ipv4_addrs(rule, &match); 1129 if (ice_tc_set_ipv4(&match, fltr, headers, true)) 1130 return -EINVAL; 1131 } else if (enc_control.key->addr_type == 1132 FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 1133 struct flow_match_ipv6_addrs match; 1134 1135 flow_rule_match_enc_ipv6_addrs(rule, &match); 1136 if (ice_tc_set_ipv6(&match, fltr, headers, true)) 1137 return -EINVAL; 1138 } 1139 1140 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { 1141 struct flow_match_ip match; 1142 1143 flow_rule_match_enc_ip(rule, &match); 1144 ice_tc_set_tos_ttl(&match, fltr, headers, true); 1145 } 1146 1147 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) && 1148 fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) { 1149 struct flow_match_ports match; 1150 1151 flow_rule_match_enc_ports(rule, &match); 1152 1153 if (fltr->tunnel_type != TNL_GTPU) { 1154 if (ice_tc_set_port(match, fltr, headers, true)) 1155 return -EINVAL; 1156 } else { 1157 if (ice_parse_gtp_type(match, fltr)) 1158 return -EINVAL; 1159 } 1160 } 1161 1162 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS)) { 1163 struct flow_match_enc_opts match; 1164 1165 flow_rule_match_enc_opts(rule, &match); 1166 1167 memcpy(&fltr->gtp_pdu_info_keys, &match.key->data[0], 1168 sizeof(struct gtp_pdu_session_info)); 1169 1170 memcpy(&fltr->gtp_pdu_info_masks, &match.mask->data[0], 1171 sizeof(struct gtp_pdu_session_info)); 1172 1173 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_OPTS; 1174 } 1175 1176 return 0; 1177 } 1178 1179 /** 1180 * ice_parse_cls_flower - Parse TC flower filters provided by kernel 1181 * @vsi: Pointer to the VSI 1182 * @filter_dev: Pointer to device on which filter is being added 1183 * @f: Pointer to struct flow_cls_offload 1184 * @fltr: Pointer to filter structure 1185 */ 1186 static int 1187 ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi, 1188 struct flow_cls_offload *f, 1189 struct ice_tc_flower_fltr *fltr) 1190 { 1191 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 1192 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 1193 u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0; 1194 struct flow_dissector *dissector; 1195 struct net_device *tunnel_dev; 1196 1197 dissector = rule->match.dissector; 1198 1199 if (dissector->used_keys & 1200 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | 1201 BIT(FLOW_DISSECTOR_KEY_BASIC) | 1202 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 1203 BIT(FLOW_DISSECTOR_KEY_VLAN) | 1204 BIT(FLOW_DISSECTOR_KEY_CVLAN) | 1205 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 1206 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 1207 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | 1208 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 1209 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 1210 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 1211 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | 1212 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) | 1213 BIT(FLOW_DISSECTOR_KEY_IP) | 1214 BIT(FLOW_DISSECTOR_KEY_ENC_IP) | 1215 BIT(FLOW_DISSECTOR_KEY_PORTS) | 1216 BIT(FLOW_DISSECTOR_KEY_PPPOE) | 1217 BIT(FLOW_DISSECTOR_KEY_L2TPV3))) { 1218 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used"); 1219 return -EOPNOTSUPP; 1220 } 1221 1222 tunnel_dev = ice_get_tunnel_device(filter_dev, rule); 1223 if (tunnel_dev) { 1224 int err; 1225 1226 filter_dev = tunnel_dev; 1227 1228 err = ice_parse_tunnel_attr(filter_dev, rule, fltr); 1229 if (err) { 1230 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes"); 1231 return err; 1232 } 1233 1234 /* header pointers should point to the inner headers, outer 1235 * header were already set by ice_parse_tunnel_attr 1236 */ 1237 headers = &fltr->inner_headers; 1238 } else if (dissector->used_keys & 1239 (BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 1240 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 1241 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 1242 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS))) { 1243 NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel"); 1244 return -EOPNOTSUPP; 1245 } else { 1246 fltr->tunnel_type = TNL_LAST; 1247 } 1248 1249 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 1250 struct flow_match_basic match; 1251 1252 flow_rule_match_basic(rule, &match); 1253 1254 n_proto_key = ntohs(match.key->n_proto); 1255 n_proto_mask = ntohs(match.mask->n_proto); 1256 1257 if (n_proto_key == ETH_P_ALL || n_proto_key == 0 || 1258 fltr->tunnel_type == TNL_GTPU || 1259 fltr->tunnel_type == TNL_GTPC) { 1260 n_proto_key = 0; 1261 n_proto_mask = 0; 1262 } else { 1263 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID; 1264 } 1265 1266 headers->l2_key.n_proto = cpu_to_be16(n_proto_key); 1267 headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask); 1268 headers->l3_key.ip_proto = match.key->ip_proto; 1269 } 1270 1271 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 1272 struct flow_match_eth_addrs match; 1273 1274 flow_rule_match_eth_addrs(rule, &match); 1275 1276 if (!is_zero_ether_addr(match.key->dst)) { 1277 ether_addr_copy(headers->l2_key.dst_mac, 1278 match.key->dst); 1279 ether_addr_copy(headers->l2_mask.dst_mac, 1280 match.mask->dst); 1281 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1282 } 1283 1284 if (!is_zero_ether_addr(match.key->src)) { 1285 ether_addr_copy(headers->l2_key.src_mac, 1286 match.key->src); 1287 ether_addr_copy(headers->l2_mask.src_mac, 1288 match.mask->src); 1289 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC; 1290 } 1291 } 1292 1293 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) || 1294 is_vlan_dev(filter_dev)) { 1295 struct flow_dissector_key_vlan mask; 1296 struct flow_dissector_key_vlan key; 1297 struct flow_match_vlan match; 1298 1299 if (is_vlan_dev(filter_dev)) { 1300 match.key = &key; 1301 match.key->vlan_id = vlan_dev_vlan_id(filter_dev); 1302 match.key->vlan_priority = 0; 1303 match.mask = &mask; 1304 memset(match.mask, 0xff, sizeof(*match.mask)); 1305 match.mask->vlan_priority = 0; 1306 } else { 1307 flow_rule_match_vlan(rule, &match); 1308 } 1309 1310 if (match.mask->vlan_id) { 1311 if (match.mask->vlan_id == VLAN_VID_MASK) { 1312 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN; 1313 headers->vlan_hdr.vlan_id = 1314 cpu_to_be16(match.key->vlan_id & 1315 VLAN_VID_MASK); 1316 } else { 1317 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask"); 1318 return -EINVAL; 1319 } 1320 } 1321 1322 if (match.mask->vlan_priority) { 1323 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN_PRIO; 1324 headers->vlan_hdr.vlan_prio = 1325 cpu_to_be16((match.key->vlan_priority << 1326 VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK); 1327 } 1328 1329 if (match.mask->vlan_tpid) 1330 headers->vlan_hdr.vlan_tpid = match.key->vlan_tpid; 1331 } 1332 1333 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) { 1334 struct flow_match_vlan match; 1335 1336 if (!ice_is_dvm_ena(&vsi->back->hw)) { 1337 NL_SET_ERR_MSG_MOD(fltr->extack, "Double VLAN mode is not enabled"); 1338 return -EINVAL; 1339 } 1340 1341 flow_rule_match_cvlan(rule, &match); 1342 1343 if (match.mask->vlan_id) { 1344 if (match.mask->vlan_id == VLAN_VID_MASK) { 1345 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN; 1346 headers->cvlan_hdr.vlan_id = 1347 cpu_to_be16(match.key->vlan_id & 1348 VLAN_VID_MASK); 1349 } else { 1350 NL_SET_ERR_MSG_MOD(fltr->extack, 1351 "Bad CVLAN mask"); 1352 return -EINVAL; 1353 } 1354 } 1355 1356 if (match.mask->vlan_priority) { 1357 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN_PRIO; 1358 headers->cvlan_hdr.vlan_prio = 1359 cpu_to_be16((match.key->vlan_priority << 1360 VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK); 1361 } 1362 } 1363 1364 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PPPOE)) { 1365 struct flow_match_pppoe match; 1366 1367 flow_rule_match_pppoe(rule, &match); 1368 n_proto_key = ice_tc_set_pppoe(&match, fltr, headers); 1369 1370 /* If ethertype equals ETH_P_PPP_SES, n_proto might be 1371 * overwritten by encapsulated protocol (ppp_proto field) or set 1372 * to 0. To correct this, flow_match_pppoe provides the type 1373 * field, which contains the actual ethertype (ETH_P_PPP_SES). 1374 */ 1375 headers->l2_key.n_proto = cpu_to_be16(n_proto_key); 1376 headers->l2_mask.n_proto = cpu_to_be16(0xFFFF); 1377 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID; 1378 } 1379 1380 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 1381 struct flow_match_control match; 1382 1383 flow_rule_match_control(rule, &match); 1384 1385 addr_type = match.key->addr_type; 1386 } 1387 1388 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 1389 struct flow_match_ipv4_addrs match; 1390 1391 flow_rule_match_ipv4_addrs(rule, &match); 1392 if (ice_tc_set_ipv4(&match, fltr, headers, false)) 1393 return -EINVAL; 1394 } 1395 1396 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 1397 struct flow_match_ipv6_addrs match; 1398 1399 flow_rule_match_ipv6_addrs(rule, &match); 1400 if (ice_tc_set_ipv6(&match, fltr, headers, false)) 1401 return -EINVAL; 1402 } 1403 1404 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) { 1405 struct flow_match_ip match; 1406 1407 flow_rule_match_ip(rule, &match); 1408 ice_tc_set_tos_ttl(&match, fltr, headers, false); 1409 } 1410 1411 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_L2TPV3)) { 1412 struct flow_match_l2tpv3 match; 1413 1414 flow_rule_match_l2tpv3(rule, &match); 1415 1416 fltr->flags |= ICE_TC_FLWR_FIELD_L2TPV3_SESSID; 1417 headers->l2tpv3_hdr.session_id = match.key->session_id; 1418 } 1419 1420 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 1421 struct flow_match_ports match; 1422 1423 flow_rule_match_ports(rule, &match); 1424 if (ice_tc_set_port(match, fltr, headers, false)) 1425 return -EINVAL; 1426 switch (headers->l3_key.ip_proto) { 1427 case IPPROTO_TCP: 1428 case IPPROTO_UDP: 1429 break; 1430 default: 1431 NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported"); 1432 return -EINVAL; 1433 } 1434 } 1435 return 0; 1436 } 1437 1438 /** 1439 * ice_add_switch_fltr - Add TC flower filters 1440 * @vsi: Pointer to VSI 1441 * @fltr: Pointer to struct ice_tc_flower_fltr 1442 * 1443 * Add filter in HW switch block 1444 */ 1445 static int 1446 ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1447 { 1448 if (fltr->action.fltr_act == ICE_FWD_TO_QGRP) 1449 return -EOPNOTSUPP; 1450 1451 if (ice_is_eswitch_mode_switchdev(vsi->back)) 1452 return ice_eswitch_add_tc_fltr(vsi, fltr); 1453 1454 return ice_add_tc_flower_adv_fltr(vsi, fltr); 1455 } 1456 1457 /** 1458 * ice_handle_tclass_action - Support directing to a traffic class 1459 * @vsi: Pointer to VSI 1460 * @cls_flower: Pointer to TC flower offload structure 1461 * @fltr: Pointer to TC flower filter structure 1462 * 1463 * Support directing traffic to a traffic class 1464 */ 1465 static int 1466 ice_handle_tclass_action(struct ice_vsi *vsi, 1467 struct flow_cls_offload *cls_flower, 1468 struct ice_tc_flower_fltr *fltr) 1469 { 1470 int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid); 1471 struct ice_vsi *main_vsi; 1472 1473 if (tc < 0) { 1474 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because specified destination is invalid"); 1475 return -EINVAL; 1476 } 1477 if (!tc) { 1478 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of invalid destination"); 1479 return -EINVAL; 1480 } 1481 1482 if (!(vsi->all_enatc & BIT(tc))) { 1483 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of non-existence destination"); 1484 return -EINVAL; 1485 } 1486 1487 /* Redirect to a TC class or Queue Group */ 1488 main_vsi = ice_get_main_vsi(vsi->back); 1489 if (!main_vsi || !main_vsi->netdev) { 1490 NL_SET_ERR_MSG_MOD(fltr->extack, 1491 "Unable to add filter because of invalid netdevice"); 1492 return -EINVAL; 1493 } 1494 1495 if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) && 1496 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1497 ICE_TC_FLWR_FIELD_SRC_MAC))) { 1498 NL_SET_ERR_MSG_MOD(fltr->extack, 1499 "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination"); 1500 return -EOPNOTSUPP; 1501 } 1502 1503 /* For ADQ, filter must include dest MAC address, otherwise unwanted 1504 * packets with unrelated MAC address get delivered to ADQ VSIs as long 1505 * as remaining filter criteria is satisfied such as dest IP address 1506 * and dest/src L4 port. Following code is trying to handle: 1507 * 1. For non-tunnel, if user specify MAC addresses, use them (means 1508 * this code won't do anything 1509 * 2. For non-tunnel, if user didn't specify MAC address, add implicit 1510 * dest MAC to be lower netdev's active unicast MAC address 1511 * 3. For tunnel, as of now TC-filter through flower classifier doesn't 1512 * have provision for user to specify outer DMAC, hence driver to 1513 * implicitly add outer dest MAC to be lower netdev's active unicast 1514 * MAC address. 1515 */ 1516 if (fltr->tunnel_type != TNL_LAST && 1517 !(fltr->flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC)) 1518 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DST_MAC; 1519 1520 if (fltr->tunnel_type == TNL_LAST && 1521 !(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC)) 1522 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1523 1524 if (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1525 ICE_TC_FLWR_FIELD_ENC_DST_MAC)) { 1526 ether_addr_copy(fltr->outer_headers.l2_key.dst_mac, 1527 vsi->netdev->dev_addr); 1528 eth_broadcast_addr(fltr->outer_headers.l2_mask.dst_mac); 1529 } 1530 1531 /* validate specified dest MAC address, make sure either it belongs to 1532 * lower netdev or any of MACVLAN. MACVLANs MAC address are added as 1533 * unicast MAC filter destined to main VSI. 1534 */ 1535 if (!ice_mac_fltr_exist(&main_vsi->back->hw, 1536 fltr->outer_headers.l2_key.dst_mac, 1537 main_vsi->idx)) { 1538 NL_SET_ERR_MSG_MOD(fltr->extack, 1539 "Unable to add filter because legacy MAC filter for specified destination doesn't exist"); 1540 return -EINVAL; 1541 } 1542 1543 /* Make sure VLAN is already added to main VSI, before allowing ADQ to 1544 * add a VLAN based filter such as MAC + VLAN + L4 port. 1545 */ 1546 if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) { 1547 u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id); 1548 1549 if (!ice_vlan_fltr_exist(&main_vsi->back->hw, vlan_id, 1550 main_vsi->idx)) { 1551 NL_SET_ERR_MSG_MOD(fltr->extack, 1552 "Unable to add filter because legacy VLAN filter for specified destination doesn't exist"); 1553 return -EINVAL; 1554 } 1555 } 1556 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1557 fltr->action.tc_class = tc; 1558 1559 return 0; 1560 } 1561 1562 /** 1563 * ice_parse_tc_flower_actions - Parse the actions for a TC filter 1564 * @vsi: Pointer to VSI 1565 * @cls_flower: Pointer to TC flower offload structure 1566 * @fltr: Pointer to TC flower filter structure 1567 * 1568 * Parse the actions for a TC filter 1569 */ 1570 static int 1571 ice_parse_tc_flower_actions(struct ice_vsi *vsi, 1572 struct flow_cls_offload *cls_flower, 1573 struct ice_tc_flower_fltr *fltr) 1574 { 1575 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); 1576 struct flow_action *flow_action = &rule->action; 1577 struct flow_action_entry *act; 1578 int i; 1579 1580 if (cls_flower->classid) 1581 return ice_handle_tclass_action(vsi, cls_flower, fltr); 1582 1583 if (!flow_action_has_entries(flow_action)) 1584 return -EINVAL; 1585 1586 flow_action_for_each(i, act, flow_action) { 1587 if (ice_is_eswitch_mode_switchdev(vsi->back)) { 1588 int err = ice_eswitch_tc_parse_action(fltr, act); 1589 1590 if (err) 1591 return err; 1592 continue; 1593 } 1594 /* Allow only one rule per filter */ 1595 1596 /* Drop action */ 1597 if (act->id == FLOW_ACTION_DROP) { 1598 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action DROP"); 1599 return -EINVAL; 1600 } 1601 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1602 } 1603 return 0; 1604 } 1605 1606 /** 1607 * ice_del_tc_fltr - deletes a filter from HW table 1608 * @vsi: Pointer to VSI 1609 * @fltr: Pointer to struct ice_tc_flower_fltr 1610 * 1611 * This function deletes a filter from HW table and manages book-keeping 1612 */ 1613 static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1614 { 1615 struct ice_rule_query_data rule_rem; 1616 struct ice_pf *pf = vsi->back; 1617 int err; 1618 1619 rule_rem.rid = fltr->rid; 1620 rule_rem.rule_id = fltr->rule_id; 1621 rule_rem.vsi_handle = fltr->dest_id; 1622 err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem); 1623 if (err) { 1624 if (err == -ENOENT) { 1625 NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist"); 1626 return -ENOENT; 1627 } 1628 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter"); 1629 return -EIO; 1630 } 1631 1632 /* update advanced switch filter count for destination 1633 * VSI if filter destination was VSI 1634 */ 1635 if (fltr->dest_vsi) { 1636 if (fltr->dest_vsi->type == ICE_VSI_CHNL) { 1637 fltr->dest_vsi->num_chnl_fltr--; 1638 1639 /* keeps track of channel filters for PF VSI */ 1640 if (vsi->type == ICE_VSI_PF && 1641 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1642 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 1643 pf->num_dmac_chnl_fltrs--; 1644 } 1645 } 1646 return 0; 1647 } 1648 1649 /** 1650 * ice_add_tc_fltr - adds a TC flower filter 1651 * @netdev: Pointer to netdev 1652 * @vsi: Pointer to VSI 1653 * @f: Pointer to flower offload structure 1654 * @__fltr: Pointer to struct ice_tc_flower_fltr 1655 * 1656 * This function parses TC-flower input fields, parses action, 1657 * and adds a filter. 1658 */ 1659 static int 1660 ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi, 1661 struct flow_cls_offload *f, 1662 struct ice_tc_flower_fltr **__fltr) 1663 { 1664 struct ice_tc_flower_fltr *fltr; 1665 int err; 1666 1667 /* by default, set output to be INVALID */ 1668 *__fltr = NULL; 1669 1670 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL); 1671 if (!fltr) 1672 return -ENOMEM; 1673 1674 fltr->cookie = f->cookie; 1675 fltr->extack = f->common.extack; 1676 fltr->src_vsi = vsi; 1677 INIT_HLIST_NODE(&fltr->tc_flower_node); 1678 1679 err = ice_parse_cls_flower(netdev, vsi, f, fltr); 1680 if (err < 0) 1681 goto err; 1682 1683 err = ice_parse_tc_flower_actions(vsi, f, fltr); 1684 if (err < 0) 1685 goto err; 1686 1687 err = ice_add_switch_fltr(vsi, fltr); 1688 if (err < 0) 1689 goto err; 1690 1691 /* return the newly created filter */ 1692 *__fltr = fltr; 1693 1694 return 0; 1695 err: 1696 kfree(fltr); 1697 return err; 1698 } 1699 1700 /** 1701 * ice_find_tc_flower_fltr - Find the TC flower filter in the list 1702 * @pf: Pointer to PF 1703 * @cookie: filter specific cookie 1704 */ 1705 static struct ice_tc_flower_fltr * 1706 ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie) 1707 { 1708 struct ice_tc_flower_fltr *fltr; 1709 1710 hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node) 1711 if (cookie == fltr->cookie) 1712 return fltr; 1713 1714 return NULL; 1715 } 1716 1717 /** 1718 * ice_add_cls_flower - add TC flower filters 1719 * @netdev: Pointer to filter device 1720 * @vsi: Pointer to VSI 1721 * @cls_flower: Pointer to flower offload structure 1722 */ 1723 int 1724 ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi, 1725 struct flow_cls_offload *cls_flower) 1726 { 1727 struct netlink_ext_ack *extack = cls_flower->common.extack; 1728 struct net_device *vsi_netdev = vsi->netdev; 1729 struct ice_tc_flower_fltr *fltr; 1730 struct ice_pf *pf = vsi->back; 1731 int err; 1732 1733 if (ice_is_reset_in_progress(pf->state)) 1734 return -EBUSY; 1735 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags)) 1736 return -EINVAL; 1737 1738 if (ice_is_port_repr_netdev(netdev)) 1739 vsi_netdev = netdev; 1740 1741 if (!(vsi_netdev->features & NETIF_F_HW_TC) && 1742 !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) { 1743 /* Based on TC indirect notifications from kernel, all ice 1744 * devices get an instance of rule from higher level device. 1745 * Avoid triggering explicit error in this case. 1746 */ 1747 if (netdev == vsi_netdev) 1748 NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again"); 1749 return -EINVAL; 1750 } 1751 1752 /* avoid duplicate entries, if exists - return error */ 1753 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1754 if (fltr) { 1755 NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring"); 1756 return -EEXIST; 1757 } 1758 1759 /* prep and add TC-flower filter in HW */ 1760 err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr); 1761 if (err) 1762 return err; 1763 1764 /* add filter into an ordered list */ 1765 hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list); 1766 return 0; 1767 } 1768 1769 /** 1770 * ice_del_cls_flower - delete TC flower filters 1771 * @vsi: Pointer to VSI 1772 * @cls_flower: Pointer to struct flow_cls_offload 1773 */ 1774 int 1775 ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower) 1776 { 1777 struct ice_tc_flower_fltr *fltr; 1778 struct ice_pf *pf = vsi->back; 1779 int err; 1780 1781 /* find filter */ 1782 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1783 if (!fltr) { 1784 if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) && 1785 hlist_empty(&pf->tc_flower_fltr_list)) 1786 return 0; 1787 1788 NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it"); 1789 return -EINVAL; 1790 } 1791 1792 fltr->extack = cls_flower->common.extack; 1793 /* delete filter from HW */ 1794 err = ice_del_tc_fltr(vsi, fltr); 1795 if (err) 1796 return err; 1797 1798 /* delete filter from an ordered list */ 1799 hlist_del(&fltr->tc_flower_node); 1800 1801 /* free the filter node */ 1802 kfree(fltr); 1803 1804 return 0; 1805 } 1806 1807 /** 1808 * ice_replay_tc_fltrs - replay TC filters 1809 * @pf: pointer to PF struct 1810 */ 1811 void ice_replay_tc_fltrs(struct ice_pf *pf) 1812 { 1813 struct ice_tc_flower_fltr *fltr; 1814 struct hlist_node *node; 1815 1816 hlist_for_each_entry_safe(fltr, node, 1817 &pf->tc_flower_fltr_list, 1818 tc_flower_node) { 1819 fltr->extack = NULL; 1820 ice_add_switch_fltr(fltr->src_vsi, fltr); 1821 } 1822 } 1823