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_vsi_handle = rule_added.vsi_handle; 728 729 exit: 730 kfree(list); 731 return ret; 732 } 733 734 /** 735 * ice_locate_vsi_using_queue - locate VSI using queue (forward to queue action) 736 * @vsi: Pointer to VSI 737 * @tc_fltr: Pointer to tc_flower_filter 738 * 739 * Locate the VSI using specified queue. When ADQ is not enabled, always 740 * return input VSI, otherwise locate corresponding VSI based on per channel 741 * offset and qcount 742 */ 743 static struct ice_vsi * 744 ice_locate_vsi_using_queue(struct ice_vsi *vsi, 745 struct ice_tc_flower_fltr *tc_fltr) 746 { 747 int num_tc, tc, queue; 748 749 /* if ADQ is not active, passed VSI is the candidate VSI */ 750 if (!ice_is_adq_active(vsi->back)) 751 return vsi; 752 753 /* Locate the VSI (it could still be main PF VSI or CHNL_VSI depending 754 * upon queue number) 755 */ 756 num_tc = vsi->mqprio_qopt.qopt.num_tc; 757 queue = tc_fltr->action.fwd.q.queue; 758 759 for (tc = 0; tc < num_tc; tc++) { 760 int qcount = vsi->mqprio_qopt.qopt.count[tc]; 761 int offset = vsi->mqprio_qopt.qopt.offset[tc]; 762 763 if (queue >= offset && queue < offset + qcount) { 764 /* for non-ADQ TCs, passed VSI is the candidate VSI */ 765 if (tc < ICE_CHNL_START_TC) 766 return vsi; 767 else 768 return vsi->tc_map_vsi[tc]; 769 } 770 } 771 return NULL; 772 } 773 774 static struct ice_rx_ring * 775 ice_locate_rx_ring_using_queue(struct ice_vsi *vsi, 776 struct ice_tc_flower_fltr *tc_fltr) 777 { 778 u16 queue = tc_fltr->action.fwd.q.queue; 779 780 return queue < vsi->num_rxq ? vsi->rx_rings[queue] : NULL; 781 } 782 783 /** 784 * ice_tc_forward_action - Determine destination VSI and queue for the action 785 * @vsi: Pointer to VSI 786 * @tc_fltr: Pointer to TC flower filter structure 787 * 788 * Validates the tc forward action and determines the destination VSI and queue 789 * for the forward action. 790 */ 791 static struct ice_vsi * 792 ice_tc_forward_action(struct ice_vsi *vsi, struct ice_tc_flower_fltr *tc_fltr) 793 { 794 struct ice_rx_ring *ring = NULL; 795 struct ice_vsi *ch_vsi = NULL; 796 struct ice_pf *pf = vsi->back; 797 struct device *dev; 798 u32 tc_class; 799 800 dev = ice_pf_to_dev(pf); 801 802 /* Get the destination VSI and/or destination queue and validate them */ 803 switch (tc_fltr->action.fltr_act) { 804 case ICE_FWD_TO_VSI: 805 tc_class = tc_fltr->action.fwd.tc.tc_class; 806 /* Select the destination VSI */ 807 if (tc_class < ICE_CHNL_START_TC) { 808 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 809 "Unable to add filter because of unsupported destination"); 810 return ERR_PTR(-EOPNOTSUPP); 811 } 812 /* Locate ADQ VSI depending on hw_tc number */ 813 ch_vsi = vsi->tc_map_vsi[tc_class]; 814 break; 815 case ICE_FWD_TO_Q: 816 /* Locate the Rx queue */ 817 ring = ice_locate_rx_ring_using_queue(vsi, tc_fltr); 818 if (!ring) { 819 dev_err(dev, 820 "Unable to locate Rx queue for action fwd_to_queue: %u\n", 821 tc_fltr->action.fwd.q.queue); 822 return ERR_PTR(-EINVAL); 823 } 824 /* Determine destination VSI even though the action is 825 * FWD_TO_QUEUE, because QUEUE is associated with VSI 826 */ 827 ch_vsi = tc_fltr->dest_vsi; 828 break; 829 default: 830 dev_err(dev, 831 "Unable to add filter because of unsupported action %u (supported actions: fwd to tc, fwd to queue)\n", 832 tc_fltr->action.fltr_act); 833 return ERR_PTR(-EINVAL); 834 } 835 /* Must have valid ch_vsi (it could be main VSI or ADQ VSI) */ 836 if (!ch_vsi) { 837 dev_err(dev, 838 "Unable to add filter because specified destination VSI doesn't exist\n"); 839 return ERR_PTR(-EINVAL); 840 } 841 return ch_vsi; 842 } 843 844 /** 845 * ice_add_tc_flower_adv_fltr - add appropriate filter rules 846 * @vsi: Pointer to VSI 847 * @tc_fltr: Pointer to TC flower filter structure 848 * 849 * based on filter parameters using Advance recipes supported 850 * by OS package. 851 */ 852 static int 853 ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi, 854 struct ice_tc_flower_fltr *tc_fltr) 855 { 856 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 857 struct ice_adv_rule_info rule_info = {0}; 858 struct ice_rule_query_data rule_added; 859 struct ice_adv_lkup_elem *list; 860 struct ice_pf *pf = vsi->back; 861 struct ice_hw *hw = &pf->hw; 862 u32 flags = tc_fltr->flags; 863 struct ice_vsi *ch_vsi; 864 struct device *dev; 865 u16 lkups_cnt = 0; 866 u16 l4_proto = 0; 867 int ret = 0; 868 u16 i = 0; 869 870 dev = ice_pf_to_dev(pf); 871 if (ice_is_safe_mode(pf)) { 872 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode"); 873 return -EOPNOTSUPP; 874 } 875 876 if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | 877 ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 878 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 879 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 880 ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) { 881 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)"); 882 return -EOPNOTSUPP; 883 } 884 885 /* validate forwarding action VSI and queue */ 886 ch_vsi = ice_tc_forward_action(vsi, tc_fltr); 887 if (IS_ERR(ch_vsi)) 888 return PTR_ERR(ch_vsi); 889 890 lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr); 891 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 892 if (!list) 893 return -ENOMEM; 894 895 i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto); 896 if (i != lkups_cnt) { 897 ret = -EINVAL; 898 goto exit; 899 } 900 901 rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act; 902 /* specify the cookie as filter_rule_id */ 903 rule_info.fltr_rule_id = tc_fltr->cookie; 904 905 switch (tc_fltr->action.fltr_act) { 906 case ICE_FWD_TO_VSI: 907 rule_info.sw_act.vsi_handle = ch_vsi->idx; 908 rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI; 909 rule_info.sw_act.src = hw->pf_id; 910 rule_info.rx = true; 911 dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n", 912 tc_fltr->action.fwd.tc.tc_class, 913 rule_info.sw_act.vsi_handle, lkups_cnt); 914 break; 915 case ICE_FWD_TO_Q: 916 /* HW queue number in global space */ 917 rule_info.sw_act.fwd_id.q_id = tc_fltr->action.fwd.q.hw_queue; 918 rule_info.sw_act.vsi_handle = ch_vsi->idx; 919 rule_info.priority = ICE_SWITCH_FLTR_PRIO_QUEUE; 920 rule_info.sw_act.src = hw->pf_id; 921 rule_info.rx = true; 922 dev_dbg(dev, "add switch rule action to forward to queue:%u (HW queue %u), lkups_cnt:%u\n", 923 tc_fltr->action.fwd.q.queue, 924 tc_fltr->action.fwd.q.hw_queue, lkups_cnt); 925 break; 926 default: 927 rule_info.sw_act.flag |= ICE_FLTR_TX; 928 /* In case of Tx (LOOKUP_TX), src needs to be src VSI */ 929 rule_info.sw_act.src = vsi->idx; 930 /* 'Rx' is false, direction of rule(LOOKUPTRX) */ 931 rule_info.rx = false; 932 rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI; 933 break; 934 } 935 936 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 937 if (ret == -EEXIST) { 938 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 939 "Unable to add filter because it already exist"); 940 ret = -EINVAL; 941 goto exit; 942 } else if (ret) { 943 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 944 "Unable to add filter due to error"); 945 goto exit; 946 } 947 948 /* store the output params, which are needed later for removing 949 * advanced switch filter 950 */ 951 tc_fltr->rid = rule_added.rid; 952 tc_fltr->rule_id = rule_added.rule_id; 953 tc_fltr->dest_vsi_handle = rule_added.vsi_handle; 954 if (tc_fltr->action.fltr_act == ICE_FWD_TO_VSI || 955 tc_fltr->action.fltr_act == ICE_FWD_TO_Q) { 956 tc_fltr->dest_vsi = ch_vsi; 957 /* keep track of advanced switch filter for 958 * destination VSI 959 */ 960 ch_vsi->num_chnl_fltr++; 961 962 /* keeps track of channel filters for PF VSI */ 963 if (vsi->type == ICE_VSI_PF && 964 (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 965 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 966 pf->num_dmac_chnl_fltrs++; 967 } 968 switch (tc_fltr->action.fltr_act) { 969 case ICE_FWD_TO_VSI: 970 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x), action is forward to TC %u, rid %u, rule_id %u, vsi_idx %u\n", 971 lkups_cnt, flags, 972 tc_fltr->action.fwd.tc.tc_class, rule_added.rid, 973 rule_added.rule_id, rule_added.vsi_handle); 974 break; 975 case ICE_FWD_TO_Q: 976 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x), action is forward to queue: %u (HW queue %u) , rid %u, rule_id %u\n", 977 lkups_cnt, flags, tc_fltr->action.fwd.q.queue, 978 tc_fltr->action.fwd.q.hw_queue, rule_added.rid, 979 rule_added.rule_id); 980 break; 981 default: 982 break; 983 } 984 exit: 985 kfree(list); 986 return ret; 987 } 988 989 /** 990 * ice_tc_set_pppoe - Parse PPPoE fields from TC flower filter 991 * @match: Pointer to flow match structure 992 * @fltr: Pointer to filter structure 993 * @headers: Pointer to outer header fields 994 * @returns PPP protocol used in filter (ppp_ses or ppp_disc) 995 */ 996 static u16 997 ice_tc_set_pppoe(struct flow_match_pppoe *match, 998 struct ice_tc_flower_fltr *fltr, 999 struct ice_tc_flower_lyr_2_4_hdrs *headers) 1000 { 1001 if (match->mask->session_id) { 1002 fltr->flags |= ICE_TC_FLWR_FIELD_PPPOE_SESSID; 1003 headers->pppoe_hdr.session_id = match->key->session_id; 1004 } 1005 1006 if (match->mask->ppp_proto) { 1007 fltr->flags |= ICE_TC_FLWR_FIELD_PPP_PROTO; 1008 headers->pppoe_hdr.ppp_proto = match->key->ppp_proto; 1009 } 1010 1011 return be16_to_cpu(match->key->type); 1012 } 1013 1014 /** 1015 * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter 1016 * @match: Pointer to flow match structure 1017 * @fltr: Pointer to filter structure 1018 * @headers: inner or outer header fields 1019 * @is_encap: set true for tunnel IPv4 address 1020 */ 1021 static int 1022 ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match, 1023 struct ice_tc_flower_fltr *fltr, 1024 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 1025 { 1026 if (match->key->dst) { 1027 if (is_encap) 1028 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4; 1029 else 1030 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4; 1031 headers->l3_key.dst_ipv4 = match->key->dst; 1032 headers->l3_mask.dst_ipv4 = match->mask->dst; 1033 } 1034 if (match->key->src) { 1035 if (is_encap) 1036 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4; 1037 else 1038 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4; 1039 headers->l3_key.src_ipv4 = match->key->src; 1040 headers->l3_mask.src_ipv4 = match->mask->src; 1041 } 1042 return 0; 1043 } 1044 1045 /** 1046 * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter 1047 * @match: Pointer to flow match structure 1048 * @fltr: Pointer to filter structure 1049 * @headers: inner or outer header fields 1050 * @is_encap: set true for tunnel IPv6 address 1051 */ 1052 static int 1053 ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match, 1054 struct ice_tc_flower_fltr *fltr, 1055 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 1056 { 1057 struct ice_tc_l3_hdr *l3_key, *l3_mask; 1058 1059 /* src and dest IPV6 address should not be LOOPBACK 1060 * (0:0:0:0:0:0:0:1), which can be represented as ::1 1061 */ 1062 if (ipv6_addr_loopback(&match->key->dst) || 1063 ipv6_addr_loopback(&match->key->src)) { 1064 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK"); 1065 return -EINVAL; 1066 } 1067 /* if src/dest IPv6 address is *,* error */ 1068 if (ipv6_addr_any(&match->mask->dst) && 1069 ipv6_addr_any(&match->mask->src)) { 1070 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any"); 1071 return -EINVAL; 1072 } 1073 if (!ipv6_addr_any(&match->mask->dst)) { 1074 if (is_encap) 1075 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6; 1076 else 1077 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6; 1078 } 1079 if (!ipv6_addr_any(&match->mask->src)) { 1080 if (is_encap) 1081 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6; 1082 else 1083 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6; 1084 } 1085 1086 l3_key = &headers->l3_key; 1087 l3_mask = &headers->l3_mask; 1088 1089 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 1090 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 1091 memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr, 1092 sizeof(match->key->src.s6_addr)); 1093 memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr, 1094 sizeof(match->mask->src.s6_addr)); 1095 } 1096 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 1097 ICE_TC_FLWR_FIELD_DEST_IPV6)) { 1098 memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr, 1099 sizeof(match->key->dst.s6_addr)); 1100 memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr, 1101 sizeof(match->mask->dst.s6_addr)); 1102 } 1103 1104 return 0; 1105 } 1106 1107 /** 1108 * ice_tc_set_tos_ttl - Parse IP ToS/TTL from TC flower filter 1109 * @match: Pointer to flow match structure 1110 * @fltr: Pointer to filter structure 1111 * @headers: inner or outer header fields 1112 * @is_encap: set true for tunnel 1113 */ 1114 static void 1115 ice_tc_set_tos_ttl(struct flow_match_ip *match, 1116 struct ice_tc_flower_fltr *fltr, 1117 struct ice_tc_flower_lyr_2_4_hdrs *headers, 1118 bool is_encap) 1119 { 1120 if (match->mask->tos) { 1121 if (is_encap) 1122 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TOS; 1123 else 1124 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TOS; 1125 1126 headers->l3_key.tos = match->key->tos; 1127 headers->l3_mask.tos = match->mask->tos; 1128 } 1129 1130 if (match->mask->ttl) { 1131 if (is_encap) 1132 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_IP_TTL; 1133 else 1134 fltr->flags |= ICE_TC_FLWR_FIELD_IP_TTL; 1135 1136 headers->l3_key.ttl = match->key->ttl; 1137 headers->l3_mask.ttl = match->mask->ttl; 1138 } 1139 } 1140 1141 /** 1142 * ice_tc_set_port - Parse ports from TC flower filter 1143 * @match: Flow match structure 1144 * @fltr: Pointer to filter structure 1145 * @headers: inner or outer header fields 1146 * @is_encap: set true for tunnel port 1147 */ 1148 static int 1149 ice_tc_set_port(struct flow_match_ports match, 1150 struct ice_tc_flower_fltr *fltr, 1151 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 1152 { 1153 if (match.key->dst) { 1154 if (is_encap) 1155 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT; 1156 else 1157 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT; 1158 1159 headers->l4_key.dst_port = match.key->dst; 1160 headers->l4_mask.dst_port = match.mask->dst; 1161 } 1162 if (match.key->src) { 1163 if (is_encap) 1164 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT; 1165 else 1166 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT; 1167 1168 headers->l4_key.src_port = match.key->src; 1169 headers->l4_mask.src_port = match.mask->src; 1170 } 1171 return 0; 1172 } 1173 1174 static struct net_device * 1175 ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule) 1176 { 1177 struct flow_action_entry *act; 1178 int i; 1179 1180 if (ice_is_tunnel_supported(dev)) 1181 return dev; 1182 1183 flow_action_for_each(i, act, &rule->action) { 1184 if (act->id == FLOW_ACTION_REDIRECT && 1185 ice_is_tunnel_supported(act->dev)) 1186 return act->dev; 1187 } 1188 1189 return NULL; 1190 } 1191 1192 /** 1193 * ice_parse_gtp_type - Sets GTP tunnel type to GTP-U or GTP-C 1194 * @match: Flow match structure 1195 * @fltr: Pointer to filter structure 1196 * 1197 * GTP-C/GTP-U is selected based on destination port number (enc_dst_port). 1198 * Before calling this funtcion, fltr->tunnel_type should be set to TNL_GTPU, 1199 * therefore making GTP-U the default choice (when destination port number is 1200 * not specified). 1201 */ 1202 static int 1203 ice_parse_gtp_type(struct flow_match_ports match, 1204 struct ice_tc_flower_fltr *fltr) 1205 { 1206 u16 dst_port; 1207 1208 if (match.key->dst) { 1209 dst_port = be16_to_cpu(match.key->dst); 1210 1211 switch (dst_port) { 1212 case 2152: 1213 break; 1214 case 2123: 1215 fltr->tunnel_type = TNL_GTPC; 1216 break; 1217 default: 1218 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported GTP port number"); 1219 return -EINVAL; 1220 } 1221 } 1222 1223 return 0; 1224 } 1225 1226 static int 1227 ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule, 1228 struct ice_tc_flower_fltr *fltr) 1229 { 1230 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 1231 struct flow_match_control enc_control; 1232 1233 fltr->tunnel_type = ice_tc_tun_get_type(dev); 1234 headers->l3_key.ip_proto = IPPROTO_UDP; 1235 1236 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 1237 struct flow_match_enc_keyid enc_keyid; 1238 1239 flow_rule_match_enc_keyid(rule, &enc_keyid); 1240 1241 if (!enc_keyid.mask->keyid || 1242 enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32)) 1243 return -EINVAL; 1244 1245 fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID; 1246 fltr->tenant_id = enc_keyid.key->keyid; 1247 } 1248 1249 flow_rule_match_enc_control(rule, &enc_control); 1250 1251 if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 1252 struct flow_match_ipv4_addrs match; 1253 1254 flow_rule_match_enc_ipv4_addrs(rule, &match); 1255 if (ice_tc_set_ipv4(&match, fltr, headers, true)) 1256 return -EINVAL; 1257 } else if (enc_control.key->addr_type == 1258 FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 1259 struct flow_match_ipv6_addrs match; 1260 1261 flow_rule_match_enc_ipv6_addrs(rule, &match); 1262 if (ice_tc_set_ipv6(&match, fltr, headers, true)) 1263 return -EINVAL; 1264 } 1265 1266 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { 1267 struct flow_match_ip match; 1268 1269 flow_rule_match_enc_ip(rule, &match); 1270 ice_tc_set_tos_ttl(&match, fltr, headers, true); 1271 } 1272 1273 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) && 1274 fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) { 1275 struct flow_match_ports match; 1276 1277 flow_rule_match_enc_ports(rule, &match); 1278 1279 if (fltr->tunnel_type != TNL_GTPU) { 1280 if (ice_tc_set_port(match, fltr, headers, true)) 1281 return -EINVAL; 1282 } else { 1283 if (ice_parse_gtp_type(match, fltr)) 1284 return -EINVAL; 1285 } 1286 } 1287 1288 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS)) { 1289 struct flow_match_enc_opts match; 1290 1291 flow_rule_match_enc_opts(rule, &match); 1292 1293 memcpy(&fltr->gtp_pdu_info_keys, &match.key->data[0], 1294 sizeof(struct gtp_pdu_session_info)); 1295 1296 memcpy(&fltr->gtp_pdu_info_masks, &match.mask->data[0], 1297 sizeof(struct gtp_pdu_session_info)); 1298 1299 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_OPTS; 1300 } 1301 1302 return 0; 1303 } 1304 1305 /** 1306 * ice_parse_cls_flower - Parse TC flower filters provided by kernel 1307 * @vsi: Pointer to the VSI 1308 * @filter_dev: Pointer to device on which filter is being added 1309 * @f: Pointer to struct flow_cls_offload 1310 * @fltr: Pointer to filter structure 1311 */ 1312 static int 1313 ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi, 1314 struct flow_cls_offload *f, 1315 struct ice_tc_flower_fltr *fltr) 1316 { 1317 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 1318 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 1319 u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0; 1320 struct flow_dissector *dissector; 1321 struct net_device *tunnel_dev; 1322 1323 dissector = rule->match.dissector; 1324 1325 if (dissector->used_keys & 1326 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | 1327 BIT(FLOW_DISSECTOR_KEY_BASIC) | 1328 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 1329 BIT(FLOW_DISSECTOR_KEY_VLAN) | 1330 BIT(FLOW_DISSECTOR_KEY_CVLAN) | 1331 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 1332 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 1333 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | 1334 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 1335 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 1336 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 1337 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | 1338 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) | 1339 BIT(FLOW_DISSECTOR_KEY_IP) | 1340 BIT(FLOW_DISSECTOR_KEY_ENC_IP) | 1341 BIT(FLOW_DISSECTOR_KEY_PORTS) | 1342 BIT(FLOW_DISSECTOR_KEY_PPPOE) | 1343 BIT(FLOW_DISSECTOR_KEY_L2TPV3))) { 1344 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used"); 1345 return -EOPNOTSUPP; 1346 } 1347 1348 tunnel_dev = ice_get_tunnel_device(filter_dev, rule); 1349 if (tunnel_dev) { 1350 int err; 1351 1352 filter_dev = tunnel_dev; 1353 1354 err = ice_parse_tunnel_attr(filter_dev, rule, fltr); 1355 if (err) { 1356 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes"); 1357 return err; 1358 } 1359 1360 /* header pointers should point to the inner headers, outer 1361 * header were already set by ice_parse_tunnel_attr 1362 */ 1363 headers = &fltr->inner_headers; 1364 } else if (dissector->used_keys & 1365 (BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 1366 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 1367 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 1368 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS))) { 1369 NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel"); 1370 return -EOPNOTSUPP; 1371 } else { 1372 fltr->tunnel_type = TNL_LAST; 1373 } 1374 1375 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 1376 struct flow_match_basic match; 1377 1378 flow_rule_match_basic(rule, &match); 1379 1380 n_proto_key = ntohs(match.key->n_proto); 1381 n_proto_mask = ntohs(match.mask->n_proto); 1382 1383 if (n_proto_key == ETH_P_ALL || n_proto_key == 0 || 1384 fltr->tunnel_type == TNL_GTPU || 1385 fltr->tunnel_type == TNL_GTPC) { 1386 n_proto_key = 0; 1387 n_proto_mask = 0; 1388 } else { 1389 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID; 1390 } 1391 1392 headers->l2_key.n_proto = cpu_to_be16(n_proto_key); 1393 headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask); 1394 headers->l3_key.ip_proto = match.key->ip_proto; 1395 } 1396 1397 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 1398 struct flow_match_eth_addrs match; 1399 1400 flow_rule_match_eth_addrs(rule, &match); 1401 1402 if (!is_zero_ether_addr(match.key->dst)) { 1403 ether_addr_copy(headers->l2_key.dst_mac, 1404 match.key->dst); 1405 ether_addr_copy(headers->l2_mask.dst_mac, 1406 match.mask->dst); 1407 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1408 } 1409 1410 if (!is_zero_ether_addr(match.key->src)) { 1411 ether_addr_copy(headers->l2_key.src_mac, 1412 match.key->src); 1413 ether_addr_copy(headers->l2_mask.src_mac, 1414 match.mask->src); 1415 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC; 1416 } 1417 } 1418 1419 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) || 1420 is_vlan_dev(filter_dev)) { 1421 struct flow_dissector_key_vlan mask; 1422 struct flow_dissector_key_vlan key; 1423 struct flow_match_vlan match; 1424 1425 if (is_vlan_dev(filter_dev)) { 1426 match.key = &key; 1427 match.key->vlan_id = vlan_dev_vlan_id(filter_dev); 1428 match.key->vlan_priority = 0; 1429 match.mask = &mask; 1430 memset(match.mask, 0xff, sizeof(*match.mask)); 1431 match.mask->vlan_priority = 0; 1432 } else { 1433 flow_rule_match_vlan(rule, &match); 1434 } 1435 1436 if (match.mask->vlan_id) { 1437 if (match.mask->vlan_id == VLAN_VID_MASK) { 1438 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN; 1439 headers->vlan_hdr.vlan_id = 1440 cpu_to_be16(match.key->vlan_id & 1441 VLAN_VID_MASK); 1442 } else { 1443 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask"); 1444 return -EINVAL; 1445 } 1446 } 1447 1448 if (match.mask->vlan_priority) { 1449 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN_PRIO; 1450 headers->vlan_hdr.vlan_prio = 1451 cpu_to_be16((match.key->vlan_priority << 1452 VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK); 1453 } 1454 1455 if (match.mask->vlan_tpid) 1456 headers->vlan_hdr.vlan_tpid = match.key->vlan_tpid; 1457 } 1458 1459 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) { 1460 struct flow_match_vlan match; 1461 1462 if (!ice_is_dvm_ena(&vsi->back->hw)) { 1463 NL_SET_ERR_MSG_MOD(fltr->extack, "Double VLAN mode is not enabled"); 1464 return -EINVAL; 1465 } 1466 1467 flow_rule_match_cvlan(rule, &match); 1468 1469 if (match.mask->vlan_id) { 1470 if (match.mask->vlan_id == VLAN_VID_MASK) { 1471 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN; 1472 headers->cvlan_hdr.vlan_id = 1473 cpu_to_be16(match.key->vlan_id & 1474 VLAN_VID_MASK); 1475 } else { 1476 NL_SET_ERR_MSG_MOD(fltr->extack, 1477 "Bad CVLAN mask"); 1478 return -EINVAL; 1479 } 1480 } 1481 1482 if (match.mask->vlan_priority) { 1483 fltr->flags |= ICE_TC_FLWR_FIELD_CVLAN_PRIO; 1484 headers->cvlan_hdr.vlan_prio = 1485 cpu_to_be16((match.key->vlan_priority << 1486 VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK); 1487 } 1488 } 1489 1490 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PPPOE)) { 1491 struct flow_match_pppoe match; 1492 1493 flow_rule_match_pppoe(rule, &match); 1494 n_proto_key = ice_tc_set_pppoe(&match, fltr, headers); 1495 1496 /* If ethertype equals ETH_P_PPP_SES, n_proto might be 1497 * overwritten by encapsulated protocol (ppp_proto field) or set 1498 * to 0. To correct this, flow_match_pppoe provides the type 1499 * field, which contains the actual ethertype (ETH_P_PPP_SES). 1500 */ 1501 headers->l2_key.n_proto = cpu_to_be16(n_proto_key); 1502 headers->l2_mask.n_proto = cpu_to_be16(0xFFFF); 1503 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID; 1504 } 1505 1506 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 1507 struct flow_match_control match; 1508 1509 flow_rule_match_control(rule, &match); 1510 1511 addr_type = match.key->addr_type; 1512 } 1513 1514 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 1515 struct flow_match_ipv4_addrs match; 1516 1517 flow_rule_match_ipv4_addrs(rule, &match); 1518 if (ice_tc_set_ipv4(&match, fltr, headers, false)) 1519 return -EINVAL; 1520 } 1521 1522 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 1523 struct flow_match_ipv6_addrs match; 1524 1525 flow_rule_match_ipv6_addrs(rule, &match); 1526 if (ice_tc_set_ipv6(&match, fltr, headers, false)) 1527 return -EINVAL; 1528 } 1529 1530 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) { 1531 struct flow_match_ip match; 1532 1533 flow_rule_match_ip(rule, &match); 1534 ice_tc_set_tos_ttl(&match, fltr, headers, false); 1535 } 1536 1537 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_L2TPV3)) { 1538 struct flow_match_l2tpv3 match; 1539 1540 flow_rule_match_l2tpv3(rule, &match); 1541 1542 fltr->flags |= ICE_TC_FLWR_FIELD_L2TPV3_SESSID; 1543 headers->l2tpv3_hdr.session_id = match.key->session_id; 1544 } 1545 1546 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 1547 struct flow_match_ports match; 1548 1549 flow_rule_match_ports(rule, &match); 1550 if (ice_tc_set_port(match, fltr, headers, false)) 1551 return -EINVAL; 1552 switch (headers->l3_key.ip_proto) { 1553 case IPPROTO_TCP: 1554 case IPPROTO_UDP: 1555 break; 1556 default: 1557 NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported"); 1558 return -EINVAL; 1559 } 1560 } 1561 return 0; 1562 } 1563 1564 /** 1565 * ice_add_switch_fltr - Add TC flower filters 1566 * @vsi: Pointer to VSI 1567 * @fltr: Pointer to struct ice_tc_flower_fltr 1568 * 1569 * Add filter in HW switch block 1570 */ 1571 static int 1572 ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1573 { 1574 if (fltr->action.fltr_act == ICE_FWD_TO_QGRP) 1575 return -EOPNOTSUPP; 1576 1577 if (ice_is_eswitch_mode_switchdev(vsi->back)) 1578 return ice_eswitch_add_tc_fltr(vsi, fltr); 1579 1580 return ice_add_tc_flower_adv_fltr(vsi, fltr); 1581 } 1582 1583 /** 1584 * ice_prep_adq_filter - Prepare ADQ filter with the required additional headers 1585 * @vsi: Pointer to VSI 1586 * @fltr: Pointer to TC flower filter structure 1587 * 1588 * Prepare ADQ filter with the required additional header fields 1589 */ 1590 static int 1591 ice_prep_adq_filter(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1592 { 1593 if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) && 1594 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1595 ICE_TC_FLWR_FIELD_SRC_MAC))) { 1596 NL_SET_ERR_MSG_MOD(fltr->extack, 1597 "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination"); 1598 return -EOPNOTSUPP; 1599 } 1600 1601 /* For ADQ, filter must include dest MAC address, otherwise unwanted 1602 * packets with unrelated MAC address get delivered to ADQ VSIs as long 1603 * as remaining filter criteria is satisfied such as dest IP address 1604 * and dest/src L4 port. Below code handles the following cases: 1605 * 1. For non-tunnel, if user specify MAC addresses, use them. 1606 * 2. For non-tunnel, if user didn't specify MAC address, add implicit 1607 * dest MAC to be lower netdev's active unicast MAC address 1608 * 3. For tunnel, as of now TC-filter through flower classifier doesn't 1609 * have provision for user to specify outer DMAC, hence driver to 1610 * implicitly add outer dest MAC to be lower netdev's active unicast 1611 * MAC address. 1612 */ 1613 if (fltr->tunnel_type != TNL_LAST && 1614 !(fltr->flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC)) 1615 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DST_MAC; 1616 1617 if (fltr->tunnel_type == TNL_LAST && 1618 !(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC)) 1619 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1620 1621 if (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1622 ICE_TC_FLWR_FIELD_ENC_DST_MAC)) { 1623 ether_addr_copy(fltr->outer_headers.l2_key.dst_mac, 1624 vsi->netdev->dev_addr); 1625 eth_broadcast_addr(fltr->outer_headers.l2_mask.dst_mac); 1626 } 1627 1628 /* Make sure VLAN is already added to main VSI, before allowing ADQ to 1629 * add a VLAN based filter such as MAC + VLAN + L4 port. 1630 */ 1631 if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) { 1632 u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id); 1633 1634 if (!ice_vlan_fltr_exist(&vsi->back->hw, vlan_id, vsi->idx)) { 1635 NL_SET_ERR_MSG_MOD(fltr->extack, 1636 "Unable to add filter because legacy VLAN filter for specified destination doesn't exist"); 1637 return -EINVAL; 1638 } 1639 } 1640 return 0; 1641 } 1642 1643 /** 1644 * ice_handle_tclass_action - Support directing to a traffic class 1645 * @vsi: Pointer to VSI 1646 * @cls_flower: Pointer to TC flower offload structure 1647 * @fltr: Pointer to TC flower filter structure 1648 * 1649 * Support directing traffic to a traffic class/queue-set 1650 */ 1651 static int 1652 ice_handle_tclass_action(struct ice_vsi *vsi, 1653 struct flow_cls_offload *cls_flower, 1654 struct ice_tc_flower_fltr *fltr) 1655 { 1656 int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid); 1657 1658 /* user specified hw_tc (must be non-zero for ADQ TC), action is forward 1659 * to hw_tc (i.e. ADQ channel number) 1660 */ 1661 if (tc < ICE_CHNL_START_TC) { 1662 NL_SET_ERR_MSG_MOD(fltr->extack, 1663 "Unable to add filter because of unsupported destination"); 1664 return -EOPNOTSUPP; 1665 } 1666 if (!(vsi->all_enatc & BIT(tc))) { 1667 NL_SET_ERR_MSG_MOD(fltr->extack, 1668 "Unable to add filter because of non-existence destination"); 1669 return -EINVAL; 1670 } 1671 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1672 fltr->action.fwd.tc.tc_class = tc; 1673 1674 return ice_prep_adq_filter(vsi, fltr); 1675 } 1676 1677 static int 1678 ice_tc_forward_to_queue(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr, 1679 struct flow_action_entry *act) 1680 { 1681 struct ice_vsi *ch_vsi = NULL; 1682 u16 queue = act->rx_queue; 1683 1684 if (queue > vsi->num_rxq) { 1685 NL_SET_ERR_MSG_MOD(fltr->extack, 1686 "Unable to add filter because specified queue is invalid"); 1687 return -EINVAL; 1688 } 1689 fltr->action.fltr_act = ICE_FWD_TO_Q; 1690 fltr->action.fwd.q.queue = queue; 1691 /* determine corresponding HW queue */ 1692 fltr->action.fwd.q.hw_queue = vsi->rxq_map[queue]; 1693 1694 /* If ADQ is configured, and the queue belongs to ADQ VSI, then prepare 1695 * ADQ switch filter 1696 */ 1697 ch_vsi = ice_locate_vsi_using_queue(vsi, fltr); 1698 if (!ch_vsi) 1699 return -EINVAL; 1700 fltr->dest_vsi = ch_vsi; 1701 if (!ice_is_chnl_fltr(fltr)) 1702 return 0; 1703 1704 return ice_prep_adq_filter(vsi, fltr); 1705 } 1706 1707 static int 1708 ice_tc_parse_action(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr, 1709 struct flow_action_entry *act) 1710 { 1711 switch (act->id) { 1712 case FLOW_ACTION_RX_QUEUE_MAPPING: 1713 /* forward to queue */ 1714 return ice_tc_forward_to_queue(vsi, fltr, act); 1715 default: 1716 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported TC action"); 1717 return -EOPNOTSUPP; 1718 } 1719 } 1720 1721 /** 1722 * ice_parse_tc_flower_actions - Parse the actions for a TC filter 1723 * @vsi: Pointer to VSI 1724 * @cls_flower: Pointer to TC flower offload structure 1725 * @fltr: Pointer to TC flower filter structure 1726 * 1727 * Parse the actions for a TC filter 1728 */ 1729 static int 1730 ice_parse_tc_flower_actions(struct ice_vsi *vsi, 1731 struct flow_cls_offload *cls_flower, 1732 struct ice_tc_flower_fltr *fltr) 1733 { 1734 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); 1735 struct flow_action *flow_action = &rule->action; 1736 struct flow_action_entry *act; 1737 int i, err; 1738 1739 if (cls_flower->classid) 1740 return ice_handle_tclass_action(vsi, cls_flower, fltr); 1741 1742 if (!flow_action_has_entries(flow_action)) 1743 return -EINVAL; 1744 1745 flow_action_for_each(i, act, flow_action) { 1746 if (ice_is_eswitch_mode_switchdev(vsi->back)) 1747 err = ice_eswitch_tc_parse_action(fltr, act); 1748 else 1749 err = ice_tc_parse_action(vsi, fltr, act); 1750 if (err) 1751 return err; 1752 continue; 1753 } 1754 return 0; 1755 } 1756 1757 /** 1758 * ice_del_tc_fltr - deletes a filter from HW table 1759 * @vsi: Pointer to VSI 1760 * @fltr: Pointer to struct ice_tc_flower_fltr 1761 * 1762 * This function deletes a filter from HW table and manages book-keeping 1763 */ 1764 static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1765 { 1766 struct ice_rule_query_data rule_rem; 1767 struct ice_pf *pf = vsi->back; 1768 int err; 1769 1770 rule_rem.rid = fltr->rid; 1771 rule_rem.rule_id = fltr->rule_id; 1772 rule_rem.vsi_handle = fltr->dest_vsi_handle; 1773 err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem); 1774 if (err) { 1775 if (err == -ENOENT) { 1776 NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist"); 1777 return -ENOENT; 1778 } 1779 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter"); 1780 return -EIO; 1781 } 1782 1783 /* update advanced switch filter count for destination 1784 * VSI if filter destination was VSI 1785 */ 1786 if (fltr->dest_vsi) { 1787 if (fltr->dest_vsi->type == ICE_VSI_CHNL) { 1788 fltr->dest_vsi->num_chnl_fltr--; 1789 1790 /* keeps track of channel filters for PF VSI */ 1791 if (vsi->type == ICE_VSI_PF && 1792 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1793 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 1794 pf->num_dmac_chnl_fltrs--; 1795 } 1796 } 1797 return 0; 1798 } 1799 1800 /** 1801 * ice_add_tc_fltr - adds a TC flower filter 1802 * @netdev: Pointer to netdev 1803 * @vsi: Pointer to VSI 1804 * @f: Pointer to flower offload structure 1805 * @__fltr: Pointer to struct ice_tc_flower_fltr 1806 * 1807 * This function parses TC-flower input fields, parses action, 1808 * and adds a filter. 1809 */ 1810 static int 1811 ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi, 1812 struct flow_cls_offload *f, 1813 struct ice_tc_flower_fltr **__fltr) 1814 { 1815 struct ice_tc_flower_fltr *fltr; 1816 int err; 1817 1818 /* by default, set output to be INVALID */ 1819 *__fltr = NULL; 1820 1821 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL); 1822 if (!fltr) 1823 return -ENOMEM; 1824 1825 fltr->cookie = f->cookie; 1826 fltr->extack = f->common.extack; 1827 fltr->src_vsi = vsi; 1828 INIT_HLIST_NODE(&fltr->tc_flower_node); 1829 1830 err = ice_parse_cls_flower(netdev, vsi, f, fltr); 1831 if (err < 0) 1832 goto err; 1833 1834 err = ice_parse_tc_flower_actions(vsi, f, fltr); 1835 if (err < 0) 1836 goto err; 1837 1838 err = ice_add_switch_fltr(vsi, fltr); 1839 if (err < 0) 1840 goto err; 1841 1842 /* return the newly created filter */ 1843 *__fltr = fltr; 1844 1845 return 0; 1846 err: 1847 kfree(fltr); 1848 return err; 1849 } 1850 1851 /** 1852 * ice_find_tc_flower_fltr - Find the TC flower filter in the list 1853 * @pf: Pointer to PF 1854 * @cookie: filter specific cookie 1855 */ 1856 static struct ice_tc_flower_fltr * 1857 ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie) 1858 { 1859 struct ice_tc_flower_fltr *fltr; 1860 1861 hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node) 1862 if (cookie == fltr->cookie) 1863 return fltr; 1864 1865 return NULL; 1866 } 1867 1868 /** 1869 * ice_add_cls_flower - add TC flower filters 1870 * @netdev: Pointer to filter device 1871 * @vsi: Pointer to VSI 1872 * @cls_flower: Pointer to flower offload structure 1873 */ 1874 int 1875 ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi, 1876 struct flow_cls_offload *cls_flower) 1877 { 1878 struct netlink_ext_ack *extack = cls_flower->common.extack; 1879 struct net_device *vsi_netdev = vsi->netdev; 1880 struct ice_tc_flower_fltr *fltr; 1881 struct ice_pf *pf = vsi->back; 1882 int err; 1883 1884 if (ice_is_reset_in_progress(pf->state)) 1885 return -EBUSY; 1886 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags)) 1887 return -EINVAL; 1888 1889 if (ice_is_port_repr_netdev(netdev)) 1890 vsi_netdev = netdev; 1891 1892 if (!(vsi_netdev->features & NETIF_F_HW_TC) && 1893 !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) { 1894 /* Based on TC indirect notifications from kernel, all ice 1895 * devices get an instance of rule from higher level device. 1896 * Avoid triggering explicit error in this case. 1897 */ 1898 if (netdev == vsi_netdev) 1899 NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again"); 1900 return -EINVAL; 1901 } 1902 1903 /* avoid duplicate entries, if exists - return error */ 1904 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1905 if (fltr) { 1906 NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring"); 1907 return -EEXIST; 1908 } 1909 1910 /* prep and add TC-flower filter in HW */ 1911 err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr); 1912 if (err) 1913 return err; 1914 1915 /* add filter into an ordered list */ 1916 hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list); 1917 return 0; 1918 } 1919 1920 /** 1921 * ice_del_cls_flower - delete TC flower filters 1922 * @vsi: Pointer to VSI 1923 * @cls_flower: Pointer to struct flow_cls_offload 1924 */ 1925 int 1926 ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower) 1927 { 1928 struct ice_tc_flower_fltr *fltr; 1929 struct ice_pf *pf = vsi->back; 1930 int err; 1931 1932 /* find filter */ 1933 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1934 if (!fltr) { 1935 if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) && 1936 hlist_empty(&pf->tc_flower_fltr_list)) 1937 return 0; 1938 1939 NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it"); 1940 return -EINVAL; 1941 } 1942 1943 fltr->extack = cls_flower->common.extack; 1944 /* delete filter from HW */ 1945 err = ice_del_tc_fltr(vsi, fltr); 1946 if (err) 1947 return err; 1948 1949 /* delete filter from an ordered list */ 1950 hlist_del(&fltr->tc_flower_node); 1951 1952 /* free the filter node */ 1953 kfree(fltr); 1954 1955 return 0; 1956 } 1957 1958 /** 1959 * ice_replay_tc_fltrs - replay TC filters 1960 * @pf: pointer to PF struct 1961 */ 1962 void ice_replay_tc_fltrs(struct ice_pf *pf) 1963 { 1964 struct ice_tc_flower_fltr *fltr; 1965 struct hlist_node *node; 1966 1967 hlist_for_each_entry_safe(fltr, node, 1968 &pf->tc_flower_fltr_list, 1969 tc_flower_node) { 1970 fltr->extack = NULL; 1971 ice_add_switch_fltr(fltr->src_vsi, fltr); 1972 } 1973 } 1974