1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (C) 2019-2021, Intel Corporation. */ 3 4 #include "ice.h" 5 #include "ice_tc_lib.h" 6 #include "ice_fltr.h" 7 #include "ice_lib.h" 8 #include "ice_protocol_type.h" 9 10 /** 11 * ice_tc_count_lkups - determine lookup count for switch filter 12 * @flags: TC-flower flags 13 * @headers: Pointer to TC flower filter header structure 14 * @fltr: Pointer to outer TC filter structure 15 * 16 * Determine lookup count based on TC flower input for switch filter. 17 */ 18 static int 19 ice_tc_count_lkups(u32 flags, struct ice_tc_flower_lyr_2_4_hdrs *headers, 20 struct ice_tc_flower_fltr *fltr) 21 { 22 int lkups_cnt = 0; 23 24 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) 25 lkups_cnt++; 26 27 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC) 28 lkups_cnt++; 29 30 if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS) 31 lkups_cnt++; 32 33 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 34 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | 35 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 36 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) 37 lkups_cnt++; 38 39 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) 40 lkups_cnt++; 41 42 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) 43 lkups_cnt++; 44 45 /* are MAC fields specified? */ 46 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | ICE_TC_FLWR_FIELD_SRC_MAC)) 47 lkups_cnt++; 48 49 /* is VLAN specified? */ 50 if (flags & ICE_TC_FLWR_FIELD_VLAN) 51 lkups_cnt++; 52 53 /* are IPv[4|6] fields specified? */ 54 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | ICE_TC_FLWR_FIELD_SRC_IPV4 | 55 ICE_TC_FLWR_FIELD_DEST_IPV6 | ICE_TC_FLWR_FIELD_SRC_IPV6)) 56 lkups_cnt++; 57 58 /* is L4 (TCP/UDP/any other L4 protocol fields) specified? */ 59 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | 60 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) 61 lkups_cnt++; 62 63 return lkups_cnt; 64 } 65 66 static enum ice_protocol_type ice_proto_type_from_mac(bool inner) 67 { 68 return inner ? ICE_MAC_IL : ICE_MAC_OFOS; 69 } 70 71 static enum ice_protocol_type ice_proto_type_from_etype(bool inner) 72 { 73 return inner ? ICE_ETYPE_IL : ICE_ETYPE_OL; 74 } 75 76 static enum ice_protocol_type ice_proto_type_from_ipv4(bool inner) 77 { 78 return inner ? ICE_IPV4_IL : ICE_IPV4_OFOS; 79 } 80 81 static enum ice_protocol_type ice_proto_type_from_ipv6(bool inner) 82 { 83 return inner ? ICE_IPV6_IL : ICE_IPV6_OFOS; 84 } 85 86 static enum ice_protocol_type ice_proto_type_from_l4_port(u16 ip_proto) 87 { 88 switch (ip_proto) { 89 case IPPROTO_TCP: 90 return ICE_TCP_IL; 91 case IPPROTO_UDP: 92 return ICE_UDP_ILOS; 93 } 94 95 return 0; 96 } 97 98 static enum ice_protocol_type 99 ice_proto_type_from_tunnel(enum ice_tunnel_type type) 100 { 101 switch (type) { 102 case TNL_VXLAN: 103 return ICE_VXLAN; 104 case TNL_GENEVE: 105 return ICE_GENEVE; 106 case TNL_GRETAP: 107 return ICE_NVGRE; 108 case TNL_GTPU: 109 /* NO_PAY profiles will not work with GTP-U */ 110 return ICE_GTP; 111 case TNL_GTPC: 112 return ICE_GTP_NO_PAY; 113 default: 114 return 0; 115 } 116 } 117 118 static enum ice_sw_tunnel_type 119 ice_sw_type_from_tunnel(enum ice_tunnel_type type) 120 { 121 switch (type) { 122 case TNL_VXLAN: 123 return ICE_SW_TUN_VXLAN; 124 case TNL_GENEVE: 125 return ICE_SW_TUN_GENEVE; 126 case TNL_GRETAP: 127 return ICE_SW_TUN_NVGRE; 128 case TNL_GTPU: 129 return ICE_SW_TUN_GTPU; 130 case TNL_GTPC: 131 return ICE_SW_TUN_GTPC; 132 default: 133 return ICE_NON_TUN; 134 } 135 } 136 137 static int 138 ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr, 139 struct ice_adv_lkup_elem *list) 140 { 141 struct ice_tc_flower_lyr_2_4_hdrs *hdr = &fltr->outer_headers; 142 int i = 0; 143 144 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) { 145 u32 tenant_id; 146 147 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type); 148 switch (fltr->tunnel_type) { 149 case TNL_VXLAN: 150 case TNL_GENEVE: 151 tenant_id = be32_to_cpu(fltr->tenant_id) << 8; 152 list[i].h_u.tnl_hdr.vni = cpu_to_be32(tenant_id); 153 memcpy(&list[i].m_u.tnl_hdr.vni, "\xff\xff\xff\x00", 4); 154 i++; 155 break; 156 case TNL_GRETAP: 157 list[i].h_u.nvgre_hdr.tni_flow = fltr->tenant_id; 158 memcpy(&list[i].m_u.nvgre_hdr.tni_flow, 159 "\xff\xff\xff\xff", 4); 160 i++; 161 break; 162 case TNL_GTPC: 163 case TNL_GTPU: 164 list[i].h_u.gtp_hdr.teid = fltr->tenant_id; 165 memcpy(&list[i].m_u.gtp_hdr.teid, 166 "\xff\xff\xff\xff", 4); 167 i++; 168 break; 169 default: 170 break; 171 } 172 } 173 174 if (flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC) { 175 list[i].type = ice_proto_type_from_mac(false); 176 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr, 177 hdr->l2_key.dst_mac); 178 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr, 179 hdr->l2_mask.dst_mac); 180 i++; 181 } 182 183 if (flags & ICE_TC_FLWR_FIELD_ENC_OPTS && 184 (fltr->tunnel_type == TNL_GTPU || fltr->tunnel_type == TNL_GTPC)) { 185 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type); 186 187 if (fltr->gtp_pdu_info_masks.pdu_type) { 188 list[i].h_u.gtp_hdr.pdu_type = 189 fltr->gtp_pdu_info_keys.pdu_type << 4; 190 memcpy(&list[i].m_u.gtp_hdr.pdu_type, "\xf0", 1); 191 } 192 193 if (fltr->gtp_pdu_info_masks.qfi) { 194 list[i].h_u.gtp_hdr.qfi = fltr->gtp_pdu_info_keys.qfi; 195 memcpy(&list[i].m_u.gtp_hdr.qfi, "\x3f", 1); 196 } 197 198 i++; 199 } 200 201 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 202 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4)) { 203 list[i].type = ice_proto_type_from_ipv4(false); 204 205 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV4) { 206 list[i].h_u.ipv4_hdr.src_addr = hdr->l3_key.src_ipv4; 207 list[i].m_u.ipv4_hdr.src_addr = hdr->l3_mask.src_ipv4; 208 } 209 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV4) { 210 list[i].h_u.ipv4_hdr.dst_addr = hdr->l3_key.dst_ipv4; 211 list[i].m_u.ipv4_hdr.dst_addr = hdr->l3_mask.dst_ipv4; 212 } 213 i++; 214 } 215 216 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 217 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) { 218 list[i].type = ice_proto_type_from_ipv6(false); 219 220 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV6) { 221 memcpy(&list[i].h_u.ipv6_hdr.src_addr, 222 &hdr->l3_key.src_ipv6_addr, 223 sizeof(hdr->l3_key.src_ipv6_addr)); 224 memcpy(&list[i].m_u.ipv6_hdr.src_addr, 225 &hdr->l3_mask.src_ipv6_addr, 226 sizeof(hdr->l3_mask.src_ipv6_addr)); 227 } 228 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV6) { 229 memcpy(&list[i].h_u.ipv6_hdr.dst_addr, 230 &hdr->l3_key.dst_ipv6_addr, 231 sizeof(hdr->l3_key.dst_ipv6_addr)); 232 memcpy(&list[i].m_u.ipv6_hdr.dst_addr, 233 &hdr->l3_mask.dst_ipv6_addr, 234 sizeof(hdr->l3_mask.dst_ipv6_addr)); 235 } 236 i++; 237 } 238 239 if ((flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) && 240 hdr->l3_key.ip_proto == IPPROTO_UDP) { 241 list[i].type = ICE_UDP_OF; 242 list[i].h_u.l4_hdr.dst_port = hdr->l4_key.dst_port; 243 list[i].m_u.l4_hdr.dst_port = hdr->l4_mask.dst_port; 244 i++; 245 } 246 247 return i; 248 } 249 250 /** 251 * ice_tc_fill_rules - fill filter rules based on TC fltr 252 * @hw: pointer to HW structure 253 * @flags: tc flower field flags 254 * @tc_fltr: pointer to TC flower filter 255 * @list: list of advance rule elements 256 * @rule_info: pointer to information about rule 257 * @l4_proto: pointer to information such as L4 proto type 258 * 259 * Fill ice_adv_lkup_elem list based on TC flower flags and 260 * TC flower headers. This list should be used to add 261 * advance filter in hardware. 262 */ 263 static int 264 ice_tc_fill_rules(struct ice_hw *hw, u32 flags, 265 struct ice_tc_flower_fltr *tc_fltr, 266 struct ice_adv_lkup_elem *list, 267 struct ice_adv_rule_info *rule_info, 268 u16 *l4_proto) 269 { 270 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 271 bool inner = false; 272 int i = 0; 273 274 rule_info->tun_type = ice_sw_type_from_tunnel(tc_fltr->tunnel_type); 275 if (tc_fltr->tunnel_type != TNL_LAST) { 276 i = ice_tc_fill_tunnel_outer(flags, tc_fltr, list); 277 278 headers = &tc_fltr->inner_headers; 279 inner = true; 280 } 281 282 if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) { 283 list[i].type = ice_proto_type_from_etype(inner); 284 list[i].h_u.ethertype.ethtype_id = headers->l2_key.n_proto; 285 list[i].m_u.ethertype.ethtype_id = headers->l2_mask.n_proto; 286 i++; 287 } 288 289 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 290 ICE_TC_FLWR_FIELD_SRC_MAC)) { 291 struct ice_tc_l2_hdr *l2_key, *l2_mask; 292 293 l2_key = &headers->l2_key; 294 l2_mask = &headers->l2_mask; 295 296 list[i].type = ice_proto_type_from_mac(inner); 297 if (flags & ICE_TC_FLWR_FIELD_DST_MAC) { 298 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr, 299 l2_key->dst_mac); 300 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr, 301 l2_mask->dst_mac); 302 } 303 if (flags & ICE_TC_FLWR_FIELD_SRC_MAC) { 304 ether_addr_copy(list[i].h_u.eth_hdr.src_addr, 305 l2_key->src_mac); 306 ether_addr_copy(list[i].m_u.eth_hdr.src_addr, 307 l2_mask->src_mac); 308 } 309 i++; 310 } 311 312 /* copy VLAN info */ 313 if (flags & ICE_TC_FLWR_FIELD_VLAN) { 314 list[i].type = ICE_VLAN_OFOS; 315 list[i].h_u.vlan_hdr.vlan = headers->vlan_hdr.vlan_id; 316 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xFFFF); 317 i++; 318 } 319 320 /* copy L3 (IPv[4|6]: src, dest) address */ 321 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | 322 ICE_TC_FLWR_FIELD_SRC_IPV4)) { 323 struct ice_tc_l3_hdr *l3_key, *l3_mask; 324 325 list[i].type = ice_proto_type_from_ipv4(inner); 326 l3_key = &headers->l3_key; 327 l3_mask = &headers->l3_mask; 328 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV4) { 329 list[i].h_u.ipv4_hdr.dst_addr = l3_key->dst_ipv4; 330 list[i].m_u.ipv4_hdr.dst_addr = l3_mask->dst_ipv4; 331 } 332 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV4) { 333 list[i].h_u.ipv4_hdr.src_addr = l3_key->src_ipv4; 334 list[i].m_u.ipv4_hdr.src_addr = l3_mask->src_ipv4; 335 } 336 i++; 337 } else if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV6 | 338 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 339 struct ice_ipv6_hdr *ipv6_hdr, *ipv6_mask; 340 struct ice_tc_l3_hdr *l3_key, *l3_mask; 341 342 list[i].type = ice_proto_type_from_ipv6(inner); 343 ipv6_hdr = &list[i].h_u.ipv6_hdr; 344 ipv6_mask = &list[i].m_u.ipv6_hdr; 345 l3_key = &headers->l3_key; 346 l3_mask = &headers->l3_mask; 347 348 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV6) { 349 memcpy(&ipv6_hdr->dst_addr, &l3_key->dst_ipv6_addr, 350 sizeof(l3_key->dst_ipv6_addr)); 351 memcpy(&ipv6_mask->dst_addr, &l3_mask->dst_ipv6_addr, 352 sizeof(l3_mask->dst_ipv6_addr)); 353 } 354 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV6) { 355 memcpy(&ipv6_hdr->src_addr, &l3_key->src_ipv6_addr, 356 sizeof(l3_key->src_ipv6_addr)); 357 memcpy(&ipv6_mask->src_addr, &l3_mask->src_ipv6_addr, 358 sizeof(l3_mask->src_ipv6_addr)); 359 } 360 i++; 361 } 362 363 /* copy L4 (src, dest) port */ 364 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | 365 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) { 366 struct ice_tc_l4_hdr *l4_key, *l4_mask; 367 368 list[i].type = ice_proto_type_from_l4_port(headers->l3_key.ip_proto); 369 l4_key = &headers->l4_key; 370 l4_mask = &headers->l4_mask; 371 372 if (flags & ICE_TC_FLWR_FIELD_DEST_L4_PORT) { 373 list[i].h_u.l4_hdr.dst_port = l4_key->dst_port; 374 list[i].m_u.l4_hdr.dst_port = l4_mask->dst_port; 375 } 376 if (flags & ICE_TC_FLWR_FIELD_SRC_L4_PORT) { 377 list[i].h_u.l4_hdr.src_port = l4_key->src_port; 378 list[i].m_u.l4_hdr.src_port = l4_mask->src_port; 379 } 380 i++; 381 } 382 383 return i; 384 } 385 386 /** 387 * ice_tc_tun_get_type - get the tunnel type 388 * @tunnel_dev: ptr to tunnel device 389 * 390 * This function detects appropriate tunnel_type if specified device is 391 * tunnel device such as VXLAN/Geneve 392 */ 393 static int ice_tc_tun_get_type(struct net_device *tunnel_dev) 394 { 395 if (netif_is_vxlan(tunnel_dev)) 396 return TNL_VXLAN; 397 if (netif_is_geneve(tunnel_dev)) 398 return TNL_GENEVE; 399 if (netif_is_gretap(tunnel_dev) || 400 netif_is_ip6gretap(tunnel_dev)) 401 return TNL_GRETAP; 402 403 /* Assume GTP-U by default in case of GTP netdev. 404 * GTP-C may be selected later, based on enc_dst_port. 405 */ 406 if (netif_is_gtp(tunnel_dev)) 407 return TNL_GTPU; 408 return TNL_LAST; 409 } 410 411 bool ice_is_tunnel_supported(struct net_device *dev) 412 { 413 return ice_tc_tun_get_type(dev) != TNL_LAST; 414 } 415 416 static int 417 ice_eswitch_tc_parse_action(struct ice_tc_flower_fltr *fltr, 418 struct flow_action_entry *act) 419 { 420 struct ice_repr *repr; 421 422 switch (act->id) { 423 case FLOW_ACTION_DROP: 424 fltr->action.fltr_act = ICE_DROP_PACKET; 425 break; 426 427 case FLOW_ACTION_REDIRECT: 428 fltr->action.fltr_act = ICE_FWD_TO_VSI; 429 430 if (ice_is_port_repr_netdev(act->dev)) { 431 repr = ice_netdev_to_repr(act->dev); 432 433 fltr->dest_vsi = repr->src_vsi; 434 fltr->direction = ICE_ESWITCH_FLTR_INGRESS; 435 } else if (netif_is_ice(act->dev) || 436 ice_is_tunnel_supported(act->dev)) { 437 fltr->direction = ICE_ESWITCH_FLTR_EGRESS; 438 } else { 439 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported netdevice in switchdev mode"); 440 return -EINVAL; 441 } 442 443 break; 444 445 default: 446 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action in switchdev mode"); 447 return -EINVAL; 448 } 449 450 return 0; 451 } 452 453 static int 454 ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 455 { 456 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 457 struct ice_adv_rule_info rule_info = { 0 }; 458 struct ice_rule_query_data rule_added; 459 struct ice_hw *hw = &vsi->back->hw; 460 struct ice_adv_lkup_elem *list; 461 u32 flags = fltr->flags; 462 int lkups_cnt; 463 int ret; 464 int i; 465 466 if (!flags || (flags & ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT)) { 467 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported encap field(s)"); 468 return -EOPNOTSUPP; 469 } 470 471 lkups_cnt = ice_tc_count_lkups(flags, headers, fltr); 472 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 473 if (!list) 474 return -ENOMEM; 475 476 i = ice_tc_fill_rules(hw, flags, fltr, list, &rule_info, NULL); 477 if (i != lkups_cnt) { 478 ret = -EINVAL; 479 goto exit; 480 } 481 482 /* egress traffic is always redirect to uplink */ 483 if (fltr->direction == ICE_ESWITCH_FLTR_EGRESS) 484 fltr->dest_vsi = vsi->back->switchdev.uplink_vsi; 485 486 rule_info.sw_act.fltr_act = fltr->action.fltr_act; 487 if (fltr->action.fltr_act != ICE_DROP_PACKET) 488 rule_info.sw_act.vsi_handle = fltr->dest_vsi->idx; 489 /* For now, making priority to be highest, and it also becomes 490 * the priority for recipe which will get created as a result of 491 * new extraction sequence based on input set. 492 * Priority '7' is max val for switch recipe, higher the number 493 * results into order of switch rule evaluation. 494 */ 495 rule_info.priority = 7; 496 497 if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) { 498 rule_info.sw_act.flag |= ICE_FLTR_RX; 499 rule_info.sw_act.src = hw->pf_id; 500 rule_info.rx = true; 501 } else { 502 rule_info.sw_act.flag |= ICE_FLTR_TX; 503 rule_info.sw_act.src = vsi->idx; 504 rule_info.rx = false; 505 rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE; 506 rule_info.flags_info.act_valid = true; 507 } 508 509 /* specify the cookie as filter_rule_id */ 510 rule_info.fltr_rule_id = fltr->cookie; 511 512 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 513 if (ret == -EEXIST) { 514 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist"); 515 ret = -EINVAL; 516 goto exit; 517 } else if (ret) { 518 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error"); 519 goto exit; 520 } 521 522 /* store the output params, which are needed later for removing 523 * advanced switch filter 524 */ 525 fltr->rid = rule_added.rid; 526 fltr->rule_id = rule_added.rule_id; 527 528 exit: 529 kfree(list); 530 return ret; 531 } 532 533 /** 534 * ice_add_tc_flower_adv_fltr - add appropriate filter rules 535 * @vsi: Pointer to VSI 536 * @tc_fltr: Pointer to TC flower filter structure 537 * 538 * based on filter parameters using Advance recipes supported 539 * by OS package. 540 */ 541 static int 542 ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi, 543 struct ice_tc_flower_fltr *tc_fltr) 544 { 545 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 546 struct ice_adv_rule_info rule_info = {0}; 547 struct ice_rule_query_data rule_added; 548 struct ice_adv_lkup_elem *list; 549 struct ice_pf *pf = vsi->back; 550 struct ice_hw *hw = &pf->hw; 551 u32 flags = tc_fltr->flags; 552 struct ice_vsi *ch_vsi; 553 struct device *dev; 554 u16 lkups_cnt = 0; 555 u16 l4_proto = 0; 556 int ret = 0; 557 u16 i = 0; 558 559 dev = ice_pf_to_dev(pf); 560 if (ice_is_safe_mode(pf)) { 561 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode"); 562 return -EOPNOTSUPP; 563 } 564 565 if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | 566 ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 567 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 568 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 569 ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) { 570 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)"); 571 return -EOPNOTSUPP; 572 } 573 574 /* get the channel (aka ADQ VSI) */ 575 if (tc_fltr->dest_vsi) 576 ch_vsi = tc_fltr->dest_vsi; 577 else 578 ch_vsi = vsi->tc_map_vsi[tc_fltr->action.tc_class]; 579 580 lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr); 581 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 582 if (!list) 583 return -ENOMEM; 584 585 i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto); 586 if (i != lkups_cnt) { 587 ret = -EINVAL; 588 goto exit; 589 } 590 591 rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act; 592 if (tc_fltr->action.tc_class >= ICE_CHNL_START_TC) { 593 if (!ch_vsi) { 594 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because specified destination doesn't exist"); 595 ret = -EINVAL; 596 goto exit; 597 } 598 599 rule_info.sw_act.fltr_act = ICE_FWD_TO_VSI; 600 rule_info.sw_act.vsi_handle = ch_vsi->idx; 601 rule_info.priority = 7; 602 rule_info.sw_act.src = hw->pf_id; 603 rule_info.rx = true; 604 dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n", 605 tc_fltr->action.tc_class, 606 rule_info.sw_act.vsi_handle, lkups_cnt); 607 } else { 608 rule_info.sw_act.flag |= ICE_FLTR_TX; 609 rule_info.sw_act.src = vsi->idx; 610 rule_info.rx = false; 611 } 612 613 /* specify the cookie as filter_rule_id */ 614 rule_info.fltr_rule_id = tc_fltr->cookie; 615 616 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 617 if (ret == -EEXIST) { 618 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 619 "Unable to add filter because it already exist"); 620 ret = -EINVAL; 621 goto exit; 622 } else if (ret) { 623 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 624 "Unable to add filter due to error"); 625 ret = -EIO; 626 goto exit; 627 } 628 629 /* store the output params, which are needed later for removing 630 * advanced switch filter 631 */ 632 tc_fltr->rid = rule_added.rid; 633 tc_fltr->rule_id = rule_added.rule_id; 634 if (tc_fltr->action.tc_class > 0 && ch_vsi) { 635 /* For PF ADQ, VSI type is set as ICE_VSI_CHNL, and 636 * for PF ADQ filter, it is not yet set in tc_fltr, 637 * hence store the dest_vsi ptr in tc_fltr 638 */ 639 if (ch_vsi->type == ICE_VSI_CHNL) 640 tc_fltr->dest_vsi = ch_vsi; 641 /* keep track of advanced switch filter for 642 * destination VSI (channel VSI) 643 */ 644 ch_vsi->num_chnl_fltr++; 645 /* in this case, dest_id is VSI handle (sw handle) */ 646 tc_fltr->dest_id = rule_added.vsi_handle; 647 648 /* keeps track of channel filters for PF VSI */ 649 if (vsi->type == ICE_VSI_PF && 650 (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 651 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 652 pf->num_dmac_chnl_fltrs++; 653 } 654 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x) for TC %u, rid %u, rule_id %u, vsi_idx %u\n", 655 lkups_cnt, flags, 656 tc_fltr->action.tc_class, rule_added.rid, 657 rule_added.rule_id, rule_added.vsi_handle); 658 exit: 659 kfree(list); 660 return ret; 661 } 662 663 /** 664 * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter 665 * @match: Pointer to flow match structure 666 * @fltr: Pointer to filter structure 667 * @headers: inner or outer header fields 668 * @is_encap: set true for tunnel IPv4 address 669 */ 670 static int 671 ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match, 672 struct ice_tc_flower_fltr *fltr, 673 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 674 { 675 if (match->key->dst) { 676 if (is_encap) 677 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4; 678 else 679 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4; 680 headers->l3_key.dst_ipv4 = match->key->dst; 681 headers->l3_mask.dst_ipv4 = match->mask->dst; 682 } 683 if (match->key->src) { 684 if (is_encap) 685 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4; 686 else 687 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4; 688 headers->l3_key.src_ipv4 = match->key->src; 689 headers->l3_mask.src_ipv4 = match->mask->src; 690 } 691 return 0; 692 } 693 694 /** 695 * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter 696 * @match: Pointer to flow match structure 697 * @fltr: Pointer to filter structure 698 * @headers: inner or outer header fields 699 * @is_encap: set true for tunnel IPv6 address 700 */ 701 static int 702 ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match, 703 struct ice_tc_flower_fltr *fltr, 704 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 705 { 706 struct ice_tc_l3_hdr *l3_key, *l3_mask; 707 708 /* src and dest IPV6 address should not be LOOPBACK 709 * (0:0:0:0:0:0:0:1), which can be represented as ::1 710 */ 711 if (ipv6_addr_loopback(&match->key->dst) || 712 ipv6_addr_loopback(&match->key->src)) { 713 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK"); 714 return -EINVAL; 715 } 716 /* if src/dest IPv6 address is *,* error */ 717 if (ipv6_addr_any(&match->mask->dst) && 718 ipv6_addr_any(&match->mask->src)) { 719 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any"); 720 return -EINVAL; 721 } 722 if (!ipv6_addr_any(&match->mask->dst)) { 723 if (is_encap) 724 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6; 725 else 726 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6; 727 } 728 if (!ipv6_addr_any(&match->mask->src)) { 729 if (is_encap) 730 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6; 731 else 732 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6; 733 } 734 735 l3_key = &headers->l3_key; 736 l3_mask = &headers->l3_mask; 737 738 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 739 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 740 memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr, 741 sizeof(match->key->src.s6_addr)); 742 memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr, 743 sizeof(match->mask->src.s6_addr)); 744 } 745 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 746 ICE_TC_FLWR_FIELD_DEST_IPV6)) { 747 memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr, 748 sizeof(match->key->dst.s6_addr)); 749 memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr, 750 sizeof(match->mask->dst.s6_addr)); 751 } 752 753 return 0; 754 } 755 756 /** 757 * ice_tc_set_port - Parse ports from TC flower filter 758 * @match: Flow match structure 759 * @fltr: Pointer to filter structure 760 * @headers: inner or outer header fields 761 * @is_encap: set true for tunnel port 762 */ 763 static int 764 ice_tc_set_port(struct flow_match_ports match, 765 struct ice_tc_flower_fltr *fltr, 766 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 767 { 768 if (match.key->dst) { 769 if (is_encap) 770 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT; 771 else 772 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT; 773 774 headers->l4_key.dst_port = match.key->dst; 775 headers->l4_mask.dst_port = match.mask->dst; 776 } 777 if (match.key->src) { 778 if (is_encap) 779 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT; 780 else 781 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT; 782 783 headers->l4_key.src_port = match.key->src; 784 headers->l4_mask.src_port = match.mask->src; 785 } 786 return 0; 787 } 788 789 static struct net_device * 790 ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule) 791 { 792 struct flow_action_entry *act; 793 int i; 794 795 if (ice_is_tunnel_supported(dev)) 796 return dev; 797 798 flow_action_for_each(i, act, &rule->action) { 799 if (act->id == FLOW_ACTION_REDIRECT && 800 ice_is_tunnel_supported(act->dev)) 801 return act->dev; 802 } 803 804 return NULL; 805 } 806 807 /** 808 * ice_parse_gtp_type - Sets GTP tunnel type to GTP-U or GTP-C 809 * @match: Flow match structure 810 * @fltr: Pointer to filter structure 811 * 812 * GTP-C/GTP-U is selected based on destination port number (enc_dst_port). 813 * Before calling this funtcion, fltr->tunnel_type should be set to TNL_GTPU, 814 * therefore making GTP-U the default choice (when destination port number is 815 * not specified). 816 */ 817 static int 818 ice_parse_gtp_type(struct flow_match_ports match, 819 struct ice_tc_flower_fltr *fltr) 820 { 821 u16 dst_port; 822 823 if (match.key->dst) { 824 dst_port = be16_to_cpu(match.key->dst); 825 826 switch (dst_port) { 827 case 2152: 828 break; 829 case 2123: 830 fltr->tunnel_type = TNL_GTPC; 831 break; 832 default: 833 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported GTP port number"); 834 return -EINVAL; 835 } 836 } 837 838 return 0; 839 } 840 841 static int 842 ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule, 843 struct ice_tc_flower_fltr *fltr) 844 { 845 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 846 struct flow_match_control enc_control; 847 848 fltr->tunnel_type = ice_tc_tun_get_type(dev); 849 headers->l3_key.ip_proto = IPPROTO_UDP; 850 851 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 852 struct flow_match_enc_keyid enc_keyid; 853 854 flow_rule_match_enc_keyid(rule, &enc_keyid); 855 856 if (!enc_keyid.mask->keyid || 857 enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32)) 858 return -EINVAL; 859 860 fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID; 861 fltr->tenant_id = enc_keyid.key->keyid; 862 } 863 864 flow_rule_match_enc_control(rule, &enc_control); 865 866 if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 867 struct flow_match_ipv4_addrs match; 868 869 flow_rule_match_enc_ipv4_addrs(rule, &match); 870 if (ice_tc_set_ipv4(&match, fltr, headers, true)) 871 return -EINVAL; 872 } else if (enc_control.key->addr_type == 873 FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 874 struct flow_match_ipv6_addrs match; 875 876 flow_rule_match_enc_ipv6_addrs(rule, &match); 877 if (ice_tc_set_ipv6(&match, fltr, headers, true)) 878 return -EINVAL; 879 } 880 881 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { 882 struct flow_match_ip match; 883 884 flow_rule_match_enc_ip(rule, &match); 885 headers->l3_key.tos = match.key->tos; 886 headers->l3_key.ttl = match.key->ttl; 887 headers->l3_mask.tos = match.mask->tos; 888 headers->l3_mask.ttl = match.mask->ttl; 889 } 890 891 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) && 892 fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) { 893 struct flow_match_ports match; 894 895 flow_rule_match_enc_ports(rule, &match); 896 897 if (fltr->tunnel_type != TNL_GTPU) { 898 if (ice_tc_set_port(match, fltr, headers, true)) 899 return -EINVAL; 900 } else { 901 if (ice_parse_gtp_type(match, fltr)) 902 return -EINVAL; 903 } 904 } 905 906 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS)) { 907 struct flow_match_enc_opts match; 908 909 flow_rule_match_enc_opts(rule, &match); 910 911 memcpy(&fltr->gtp_pdu_info_keys, &match.key->data[0], 912 sizeof(struct gtp_pdu_session_info)); 913 914 memcpy(&fltr->gtp_pdu_info_masks, &match.mask->data[0], 915 sizeof(struct gtp_pdu_session_info)); 916 917 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_OPTS; 918 } 919 920 return 0; 921 } 922 923 /** 924 * ice_parse_cls_flower - Parse TC flower filters provided by kernel 925 * @vsi: Pointer to the VSI 926 * @filter_dev: Pointer to device on which filter is being added 927 * @f: Pointer to struct flow_cls_offload 928 * @fltr: Pointer to filter structure 929 */ 930 static int 931 ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi, 932 struct flow_cls_offload *f, 933 struct ice_tc_flower_fltr *fltr) 934 { 935 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 936 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 937 u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0; 938 struct flow_dissector *dissector; 939 struct net_device *tunnel_dev; 940 941 dissector = rule->match.dissector; 942 943 if (dissector->used_keys & 944 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | 945 BIT(FLOW_DISSECTOR_KEY_BASIC) | 946 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 947 BIT(FLOW_DISSECTOR_KEY_VLAN) | 948 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 949 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 950 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | 951 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 952 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 953 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 954 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | 955 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) | 956 BIT(FLOW_DISSECTOR_KEY_ENC_IP) | 957 BIT(FLOW_DISSECTOR_KEY_PORTS))) { 958 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used"); 959 return -EOPNOTSUPP; 960 } 961 962 tunnel_dev = ice_get_tunnel_device(filter_dev, rule); 963 if (tunnel_dev) { 964 int err; 965 966 filter_dev = tunnel_dev; 967 968 err = ice_parse_tunnel_attr(filter_dev, rule, fltr); 969 if (err) { 970 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes"); 971 return err; 972 } 973 974 /* header pointers should point to the inner headers, outer 975 * header were already set by ice_parse_tunnel_attr 976 */ 977 headers = &fltr->inner_headers; 978 } else if (dissector->used_keys & 979 (BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 980 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 981 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 982 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS))) { 983 NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel"); 984 return -EOPNOTSUPP; 985 } else { 986 fltr->tunnel_type = TNL_LAST; 987 } 988 989 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 990 struct flow_match_basic match; 991 992 flow_rule_match_basic(rule, &match); 993 994 n_proto_key = ntohs(match.key->n_proto); 995 n_proto_mask = ntohs(match.mask->n_proto); 996 997 if (n_proto_key == ETH_P_ALL || n_proto_key == 0) { 998 n_proto_key = 0; 999 n_proto_mask = 0; 1000 } else { 1001 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID; 1002 } 1003 1004 headers->l2_key.n_proto = cpu_to_be16(n_proto_key); 1005 headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask); 1006 headers->l3_key.ip_proto = match.key->ip_proto; 1007 } 1008 1009 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 1010 struct flow_match_eth_addrs match; 1011 1012 flow_rule_match_eth_addrs(rule, &match); 1013 1014 if (!is_zero_ether_addr(match.key->dst)) { 1015 ether_addr_copy(headers->l2_key.dst_mac, 1016 match.key->dst); 1017 ether_addr_copy(headers->l2_mask.dst_mac, 1018 match.mask->dst); 1019 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1020 } 1021 1022 if (!is_zero_ether_addr(match.key->src)) { 1023 ether_addr_copy(headers->l2_key.src_mac, 1024 match.key->src); 1025 ether_addr_copy(headers->l2_mask.src_mac, 1026 match.mask->src); 1027 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC; 1028 } 1029 } 1030 1031 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) || 1032 is_vlan_dev(filter_dev)) { 1033 struct flow_dissector_key_vlan mask; 1034 struct flow_dissector_key_vlan key; 1035 struct flow_match_vlan match; 1036 1037 if (is_vlan_dev(filter_dev)) { 1038 match.key = &key; 1039 match.key->vlan_id = vlan_dev_vlan_id(filter_dev); 1040 match.key->vlan_priority = 0; 1041 match.mask = &mask; 1042 memset(match.mask, 0xff, sizeof(*match.mask)); 1043 match.mask->vlan_priority = 0; 1044 } else { 1045 flow_rule_match_vlan(rule, &match); 1046 } 1047 1048 if (match.mask->vlan_id) { 1049 if (match.mask->vlan_id == VLAN_VID_MASK) { 1050 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN; 1051 } else { 1052 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask"); 1053 return -EINVAL; 1054 } 1055 } 1056 1057 headers->vlan_hdr.vlan_id = 1058 cpu_to_be16(match.key->vlan_id & VLAN_VID_MASK); 1059 if (match.mask->vlan_priority) 1060 headers->vlan_hdr.vlan_prio = match.key->vlan_priority; 1061 } 1062 1063 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 1064 struct flow_match_control match; 1065 1066 flow_rule_match_control(rule, &match); 1067 1068 addr_type = match.key->addr_type; 1069 } 1070 1071 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 1072 struct flow_match_ipv4_addrs match; 1073 1074 flow_rule_match_ipv4_addrs(rule, &match); 1075 if (ice_tc_set_ipv4(&match, fltr, headers, false)) 1076 return -EINVAL; 1077 } 1078 1079 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 1080 struct flow_match_ipv6_addrs match; 1081 1082 flow_rule_match_ipv6_addrs(rule, &match); 1083 if (ice_tc_set_ipv6(&match, fltr, headers, false)) 1084 return -EINVAL; 1085 } 1086 1087 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 1088 struct flow_match_ports match; 1089 1090 flow_rule_match_ports(rule, &match); 1091 if (ice_tc_set_port(match, fltr, headers, false)) 1092 return -EINVAL; 1093 switch (headers->l3_key.ip_proto) { 1094 case IPPROTO_TCP: 1095 case IPPROTO_UDP: 1096 break; 1097 default: 1098 NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported"); 1099 return -EINVAL; 1100 } 1101 } 1102 return 0; 1103 } 1104 1105 /** 1106 * ice_add_switch_fltr - Add TC flower filters 1107 * @vsi: Pointer to VSI 1108 * @fltr: Pointer to struct ice_tc_flower_fltr 1109 * 1110 * Add filter in HW switch block 1111 */ 1112 static int 1113 ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1114 { 1115 if (fltr->action.fltr_act == ICE_FWD_TO_QGRP) 1116 return -EOPNOTSUPP; 1117 1118 if (ice_is_eswitch_mode_switchdev(vsi->back)) 1119 return ice_eswitch_add_tc_fltr(vsi, fltr); 1120 1121 return ice_add_tc_flower_adv_fltr(vsi, fltr); 1122 } 1123 1124 /** 1125 * ice_handle_tclass_action - Support directing to a traffic class 1126 * @vsi: Pointer to VSI 1127 * @cls_flower: Pointer to TC flower offload structure 1128 * @fltr: Pointer to TC flower filter structure 1129 * 1130 * Support directing traffic to a traffic class 1131 */ 1132 static int 1133 ice_handle_tclass_action(struct ice_vsi *vsi, 1134 struct flow_cls_offload *cls_flower, 1135 struct ice_tc_flower_fltr *fltr) 1136 { 1137 int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid); 1138 struct ice_vsi *main_vsi; 1139 1140 if (tc < 0) { 1141 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because specified destination is invalid"); 1142 return -EINVAL; 1143 } 1144 if (!tc) { 1145 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of invalid destination"); 1146 return -EINVAL; 1147 } 1148 1149 if (!(vsi->all_enatc & BIT(tc))) { 1150 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of non-existence destination"); 1151 return -EINVAL; 1152 } 1153 1154 /* Redirect to a TC class or Queue Group */ 1155 main_vsi = ice_get_main_vsi(vsi->back); 1156 if (!main_vsi || !main_vsi->netdev) { 1157 NL_SET_ERR_MSG_MOD(fltr->extack, 1158 "Unable to add filter because of invalid netdevice"); 1159 return -EINVAL; 1160 } 1161 1162 if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) && 1163 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1164 ICE_TC_FLWR_FIELD_SRC_MAC))) { 1165 NL_SET_ERR_MSG_MOD(fltr->extack, 1166 "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination"); 1167 return -EOPNOTSUPP; 1168 } 1169 1170 /* For ADQ, filter must include dest MAC address, otherwise unwanted 1171 * packets with unrelated MAC address get delivered to ADQ VSIs as long 1172 * as remaining filter criteria is satisfied such as dest IP address 1173 * and dest/src L4 port. Following code is trying to handle: 1174 * 1. For non-tunnel, if user specify MAC addresses, use them (means 1175 * this code won't do anything 1176 * 2. For non-tunnel, if user didn't specify MAC address, add implicit 1177 * dest MAC to be lower netdev's active unicast MAC address 1178 * 3. For tunnel, as of now TC-filter through flower classifier doesn't 1179 * have provision for user to specify outer DMAC, hence driver to 1180 * implicitly add outer dest MAC to be lower netdev's active unicast 1181 * MAC address. 1182 */ 1183 if (fltr->tunnel_type != TNL_LAST && 1184 !(fltr->flags & ICE_TC_FLWR_FIELD_ENC_DST_MAC)) 1185 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DST_MAC; 1186 1187 if (fltr->tunnel_type == TNL_LAST && 1188 !(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC)) 1189 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1190 1191 if (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1192 ICE_TC_FLWR_FIELD_ENC_DST_MAC)) { 1193 ether_addr_copy(fltr->outer_headers.l2_key.dst_mac, 1194 vsi->netdev->dev_addr); 1195 memset(fltr->outer_headers.l2_mask.dst_mac, 0xff, ETH_ALEN); 1196 } 1197 1198 /* validate specified dest MAC address, make sure either it belongs to 1199 * lower netdev or any of MACVLAN. MACVLANs MAC address are added as 1200 * unicast MAC filter destined to main VSI. 1201 */ 1202 if (!ice_mac_fltr_exist(&main_vsi->back->hw, 1203 fltr->outer_headers.l2_key.dst_mac, 1204 main_vsi->idx)) { 1205 NL_SET_ERR_MSG_MOD(fltr->extack, 1206 "Unable to add filter because legacy MAC filter for specified destination doesn't exist"); 1207 return -EINVAL; 1208 } 1209 1210 /* Make sure VLAN is already added to main VSI, before allowing ADQ to 1211 * add a VLAN based filter such as MAC + VLAN + L4 port. 1212 */ 1213 if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) { 1214 u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id); 1215 1216 if (!ice_vlan_fltr_exist(&main_vsi->back->hw, vlan_id, 1217 main_vsi->idx)) { 1218 NL_SET_ERR_MSG_MOD(fltr->extack, 1219 "Unable to add filter because legacy VLAN filter for specified destination doesn't exist"); 1220 return -EINVAL; 1221 } 1222 } 1223 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1224 fltr->action.tc_class = tc; 1225 1226 return 0; 1227 } 1228 1229 /** 1230 * ice_parse_tc_flower_actions - Parse the actions for a TC filter 1231 * @vsi: Pointer to VSI 1232 * @cls_flower: Pointer to TC flower offload structure 1233 * @fltr: Pointer to TC flower filter structure 1234 * 1235 * Parse the actions for a TC filter 1236 */ 1237 static int 1238 ice_parse_tc_flower_actions(struct ice_vsi *vsi, 1239 struct flow_cls_offload *cls_flower, 1240 struct ice_tc_flower_fltr *fltr) 1241 { 1242 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); 1243 struct flow_action *flow_action = &rule->action; 1244 struct flow_action_entry *act; 1245 int i; 1246 1247 if (cls_flower->classid) 1248 return ice_handle_tclass_action(vsi, cls_flower, fltr); 1249 1250 if (!flow_action_has_entries(flow_action)) 1251 return -EINVAL; 1252 1253 flow_action_for_each(i, act, flow_action) { 1254 if (ice_is_eswitch_mode_switchdev(vsi->back)) { 1255 int err = ice_eswitch_tc_parse_action(fltr, act); 1256 1257 if (err) 1258 return err; 1259 continue; 1260 } 1261 /* Allow only one rule per filter */ 1262 1263 /* Drop action */ 1264 if (act->id == FLOW_ACTION_DROP) { 1265 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action DROP"); 1266 return -EINVAL; 1267 } 1268 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1269 } 1270 return 0; 1271 } 1272 1273 /** 1274 * ice_del_tc_fltr - deletes a filter from HW table 1275 * @vsi: Pointer to VSI 1276 * @fltr: Pointer to struct ice_tc_flower_fltr 1277 * 1278 * This function deletes a filter from HW table and manages book-keeping 1279 */ 1280 static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1281 { 1282 struct ice_rule_query_data rule_rem; 1283 struct ice_pf *pf = vsi->back; 1284 int err; 1285 1286 rule_rem.rid = fltr->rid; 1287 rule_rem.rule_id = fltr->rule_id; 1288 rule_rem.vsi_handle = fltr->dest_id; 1289 err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem); 1290 if (err) { 1291 if (err == -ENOENT) { 1292 NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist"); 1293 return -ENOENT; 1294 } 1295 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter"); 1296 return -EIO; 1297 } 1298 1299 /* update advanced switch filter count for destination 1300 * VSI if filter destination was VSI 1301 */ 1302 if (fltr->dest_vsi) { 1303 if (fltr->dest_vsi->type == ICE_VSI_CHNL) { 1304 fltr->dest_vsi->num_chnl_fltr--; 1305 1306 /* keeps track of channel filters for PF VSI */ 1307 if (vsi->type == ICE_VSI_PF && 1308 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1309 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 1310 pf->num_dmac_chnl_fltrs--; 1311 } 1312 } 1313 return 0; 1314 } 1315 1316 /** 1317 * ice_add_tc_fltr - adds a TC flower filter 1318 * @netdev: Pointer to netdev 1319 * @vsi: Pointer to VSI 1320 * @f: Pointer to flower offload structure 1321 * @__fltr: Pointer to struct ice_tc_flower_fltr 1322 * 1323 * This function parses TC-flower input fields, parses action, 1324 * and adds a filter. 1325 */ 1326 static int 1327 ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi, 1328 struct flow_cls_offload *f, 1329 struct ice_tc_flower_fltr **__fltr) 1330 { 1331 struct ice_tc_flower_fltr *fltr; 1332 int err; 1333 1334 /* by default, set output to be INVALID */ 1335 *__fltr = NULL; 1336 1337 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL); 1338 if (!fltr) 1339 return -ENOMEM; 1340 1341 fltr->cookie = f->cookie; 1342 fltr->extack = f->common.extack; 1343 fltr->src_vsi = vsi; 1344 INIT_HLIST_NODE(&fltr->tc_flower_node); 1345 1346 err = ice_parse_cls_flower(netdev, vsi, f, fltr); 1347 if (err < 0) 1348 goto err; 1349 1350 err = ice_parse_tc_flower_actions(vsi, f, fltr); 1351 if (err < 0) 1352 goto err; 1353 1354 err = ice_add_switch_fltr(vsi, fltr); 1355 if (err < 0) 1356 goto err; 1357 1358 /* return the newly created filter */ 1359 *__fltr = fltr; 1360 1361 return 0; 1362 err: 1363 kfree(fltr); 1364 return err; 1365 } 1366 1367 /** 1368 * ice_find_tc_flower_fltr - Find the TC flower filter in the list 1369 * @pf: Pointer to PF 1370 * @cookie: filter specific cookie 1371 */ 1372 static struct ice_tc_flower_fltr * 1373 ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie) 1374 { 1375 struct ice_tc_flower_fltr *fltr; 1376 1377 hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node) 1378 if (cookie == fltr->cookie) 1379 return fltr; 1380 1381 return NULL; 1382 } 1383 1384 /** 1385 * ice_add_cls_flower - add TC flower filters 1386 * @netdev: Pointer to filter device 1387 * @vsi: Pointer to VSI 1388 * @cls_flower: Pointer to flower offload structure 1389 */ 1390 int 1391 ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi, 1392 struct flow_cls_offload *cls_flower) 1393 { 1394 struct netlink_ext_ack *extack = cls_flower->common.extack; 1395 struct net_device *vsi_netdev = vsi->netdev; 1396 struct ice_tc_flower_fltr *fltr; 1397 struct ice_pf *pf = vsi->back; 1398 int err; 1399 1400 if (ice_is_reset_in_progress(pf->state)) 1401 return -EBUSY; 1402 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags)) 1403 return -EINVAL; 1404 1405 if (ice_is_port_repr_netdev(netdev)) 1406 vsi_netdev = netdev; 1407 1408 if (!(vsi_netdev->features & NETIF_F_HW_TC) && 1409 !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) { 1410 /* Based on TC indirect notifications from kernel, all ice 1411 * devices get an instance of rule from higher level device. 1412 * Avoid triggering explicit error in this case. 1413 */ 1414 if (netdev == vsi_netdev) 1415 NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again"); 1416 return -EINVAL; 1417 } 1418 1419 /* avoid duplicate entries, if exists - return error */ 1420 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1421 if (fltr) { 1422 NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring"); 1423 return -EEXIST; 1424 } 1425 1426 /* prep and add TC-flower filter in HW */ 1427 err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr); 1428 if (err) 1429 return err; 1430 1431 /* add filter into an ordered list */ 1432 hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list); 1433 return 0; 1434 } 1435 1436 /** 1437 * ice_del_cls_flower - delete TC flower filters 1438 * @vsi: Pointer to VSI 1439 * @cls_flower: Pointer to struct flow_cls_offload 1440 */ 1441 int 1442 ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower) 1443 { 1444 struct ice_tc_flower_fltr *fltr; 1445 struct ice_pf *pf = vsi->back; 1446 int err; 1447 1448 /* find filter */ 1449 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1450 if (!fltr) { 1451 if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) && 1452 hlist_empty(&pf->tc_flower_fltr_list)) 1453 return 0; 1454 1455 NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it"); 1456 return -EINVAL; 1457 } 1458 1459 fltr->extack = cls_flower->common.extack; 1460 /* delete filter from HW */ 1461 err = ice_del_tc_fltr(vsi, fltr); 1462 if (err) 1463 return err; 1464 1465 /* delete filter from an ordered list */ 1466 hlist_del(&fltr->tc_flower_node); 1467 1468 /* free the filter node */ 1469 kfree(fltr); 1470 1471 return 0; 1472 } 1473 1474 /** 1475 * ice_replay_tc_fltrs - replay TC filters 1476 * @pf: pointer to PF struct 1477 */ 1478 void ice_replay_tc_fltrs(struct ice_pf *pf) 1479 { 1480 struct ice_tc_flower_fltr *fltr; 1481 struct hlist_node *node; 1482 1483 hlist_for_each_entry_safe(fltr, node, 1484 &pf->tc_flower_fltr_list, 1485 tc_flower_node) { 1486 fltr->extack = NULL; 1487 ice_add_switch_fltr(fltr->src_vsi, fltr); 1488 } 1489 } 1490