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_SRC_IPV4 | 28 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | 29 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 30 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) 31 lkups_cnt++; 32 33 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) 34 lkups_cnt++; 35 36 /* currently inner etype filter isn't supported */ 37 if ((flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) && 38 fltr->tunnel_type == TNL_LAST) 39 lkups_cnt++; 40 41 /* are MAC fields specified? */ 42 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | ICE_TC_FLWR_FIELD_SRC_MAC)) 43 lkups_cnt++; 44 45 /* is VLAN specified? */ 46 if (flags & ICE_TC_FLWR_FIELD_VLAN) 47 lkups_cnt++; 48 49 /* are IPv[4|6] fields specified? */ 50 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | ICE_TC_FLWR_FIELD_SRC_IPV4 | 51 ICE_TC_FLWR_FIELD_DEST_IPV6 | ICE_TC_FLWR_FIELD_SRC_IPV6)) 52 lkups_cnt++; 53 54 /* is L4 (TCP/UDP/any other L4 protocol fields) specified? */ 55 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | 56 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) 57 lkups_cnt++; 58 59 return lkups_cnt; 60 } 61 62 static enum ice_protocol_type ice_proto_type_from_mac(bool inner) 63 { 64 return inner ? ICE_MAC_IL : ICE_MAC_OFOS; 65 } 66 67 static enum ice_protocol_type ice_proto_type_from_ipv4(bool inner) 68 { 69 return inner ? ICE_IPV4_IL : ICE_IPV4_OFOS; 70 } 71 72 static enum ice_protocol_type ice_proto_type_from_ipv6(bool inner) 73 { 74 return inner ? ICE_IPV6_IL : ICE_IPV6_OFOS; 75 } 76 77 static enum ice_protocol_type ice_proto_type_from_l4_port(u16 ip_proto) 78 { 79 switch (ip_proto) { 80 case IPPROTO_TCP: 81 return ICE_TCP_IL; 82 case IPPROTO_UDP: 83 return ICE_UDP_ILOS; 84 } 85 86 return 0; 87 } 88 89 static enum ice_protocol_type 90 ice_proto_type_from_tunnel(enum ice_tunnel_type type) 91 { 92 switch (type) { 93 case TNL_VXLAN: 94 return ICE_VXLAN; 95 case TNL_GENEVE: 96 return ICE_GENEVE; 97 case TNL_GRETAP: 98 return ICE_NVGRE; 99 default: 100 return 0; 101 } 102 } 103 104 static enum ice_sw_tunnel_type 105 ice_sw_type_from_tunnel(enum ice_tunnel_type type) 106 { 107 switch (type) { 108 case TNL_VXLAN: 109 return ICE_SW_TUN_VXLAN; 110 case TNL_GENEVE: 111 return ICE_SW_TUN_GENEVE; 112 case TNL_GRETAP: 113 return ICE_SW_TUN_NVGRE; 114 default: 115 return ICE_NON_TUN; 116 } 117 } 118 119 static int 120 ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr, 121 struct ice_adv_lkup_elem *list) 122 { 123 struct ice_tc_flower_lyr_2_4_hdrs *hdr = &fltr->outer_headers; 124 int i = 0; 125 126 if (flags & ICE_TC_FLWR_FIELD_TENANT_ID) { 127 u32 tenant_id; 128 129 list[i].type = ice_proto_type_from_tunnel(fltr->tunnel_type); 130 switch (fltr->tunnel_type) { 131 case TNL_VXLAN: 132 case TNL_GENEVE: 133 tenant_id = be32_to_cpu(fltr->tenant_id) << 8; 134 list[i].h_u.tnl_hdr.vni = cpu_to_be32(tenant_id); 135 memcpy(&list[i].m_u.tnl_hdr.vni, "\xff\xff\xff\x00", 4); 136 i++; 137 break; 138 case TNL_GRETAP: 139 list[i].h_u.nvgre_hdr.tni_flow = fltr->tenant_id; 140 memcpy(&list[i].m_u.nvgre_hdr.tni_flow, "\xff\xff\xff\xff", 4); 141 i++; 142 break; 143 default: 144 break; 145 } 146 } 147 148 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 149 ICE_TC_FLWR_FIELD_ENC_DEST_IPV4)) { 150 list[i].type = ice_proto_type_from_ipv4(false); 151 152 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV4) { 153 list[i].h_u.ipv4_hdr.src_addr = hdr->l3_key.src_ipv4; 154 list[i].m_u.ipv4_hdr.src_addr = hdr->l3_mask.src_ipv4; 155 } 156 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV4) { 157 list[i].h_u.ipv4_hdr.dst_addr = hdr->l3_key.dst_ipv4; 158 list[i].m_u.ipv4_hdr.dst_addr = hdr->l3_mask.dst_ipv4; 159 } 160 i++; 161 } 162 163 if (flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 164 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6)) { 165 list[i].type = ice_proto_type_from_ipv6(false); 166 167 if (flags & ICE_TC_FLWR_FIELD_ENC_SRC_IPV6) { 168 memcpy(&list[i].h_u.ipv6_hdr.src_addr, 169 &hdr->l3_key.src_ipv6_addr, 170 sizeof(hdr->l3_key.src_ipv6_addr)); 171 memcpy(&list[i].m_u.ipv6_hdr.src_addr, 172 &hdr->l3_mask.src_ipv6_addr, 173 sizeof(hdr->l3_mask.src_ipv6_addr)); 174 } 175 if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_IPV6) { 176 memcpy(&list[i].h_u.ipv6_hdr.dst_addr, 177 &hdr->l3_key.dst_ipv6_addr, 178 sizeof(hdr->l3_key.dst_ipv6_addr)); 179 memcpy(&list[i].m_u.ipv6_hdr.dst_addr, 180 &hdr->l3_mask.dst_ipv6_addr, 181 sizeof(hdr->l3_mask.dst_ipv6_addr)); 182 } 183 i++; 184 } 185 186 if ((flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) && 187 hdr->l3_key.ip_proto == IPPROTO_UDP) { 188 list[i].type = ICE_UDP_OF; 189 list[i].h_u.l4_hdr.dst_port = hdr->l4_key.dst_port; 190 list[i].m_u.l4_hdr.dst_port = hdr->l4_mask.dst_port; 191 i++; 192 } 193 194 return i; 195 } 196 197 /** 198 * ice_tc_fill_rules - fill filter rules based on TC fltr 199 * @hw: pointer to HW structure 200 * @flags: tc flower field flags 201 * @tc_fltr: pointer to TC flower filter 202 * @list: list of advance rule elements 203 * @rule_info: pointer to information about rule 204 * @l4_proto: pointer to information such as L4 proto type 205 * 206 * Fill ice_adv_lkup_elem list based on TC flower flags and 207 * TC flower headers. This list should be used to add 208 * advance filter in hardware. 209 */ 210 static int 211 ice_tc_fill_rules(struct ice_hw *hw, u32 flags, 212 struct ice_tc_flower_fltr *tc_fltr, 213 struct ice_adv_lkup_elem *list, 214 struct ice_adv_rule_info *rule_info, 215 u16 *l4_proto) 216 { 217 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 218 bool inner = false; 219 int i = 0; 220 221 rule_info->tun_type = ice_sw_type_from_tunnel(tc_fltr->tunnel_type); 222 if (tc_fltr->tunnel_type != TNL_LAST) { 223 i = ice_tc_fill_tunnel_outer(flags, tc_fltr, list); 224 225 headers = &tc_fltr->inner_headers; 226 inner = true; 227 } else if (flags & ICE_TC_FLWR_FIELD_ETH_TYPE_ID) { 228 list[i].type = ICE_ETYPE_OL; 229 list[i].h_u.ethertype.ethtype_id = headers->l2_key.n_proto; 230 list[i].m_u.ethertype.ethtype_id = headers->l2_mask.n_proto; 231 i++; 232 } 233 234 if (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 235 ICE_TC_FLWR_FIELD_SRC_MAC)) { 236 struct ice_tc_l2_hdr *l2_key, *l2_mask; 237 238 l2_key = &headers->l2_key; 239 l2_mask = &headers->l2_mask; 240 241 list[i].type = ice_proto_type_from_mac(inner); 242 if (flags & ICE_TC_FLWR_FIELD_DST_MAC) { 243 ether_addr_copy(list[i].h_u.eth_hdr.dst_addr, 244 l2_key->dst_mac); 245 ether_addr_copy(list[i].m_u.eth_hdr.dst_addr, 246 l2_mask->dst_mac); 247 } 248 if (flags & ICE_TC_FLWR_FIELD_SRC_MAC) { 249 ether_addr_copy(list[i].h_u.eth_hdr.src_addr, 250 l2_key->src_mac); 251 ether_addr_copy(list[i].m_u.eth_hdr.src_addr, 252 l2_mask->src_mac); 253 } 254 i++; 255 } 256 257 /* copy VLAN info */ 258 if (flags & ICE_TC_FLWR_FIELD_VLAN) { 259 list[i].type = ICE_VLAN_OFOS; 260 list[i].h_u.vlan_hdr.vlan = headers->vlan_hdr.vlan_id; 261 list[i].m_u.vlan_hdr.vlan = cpu_to_be16(0xFFFF); 262 i++; 263 } 264 265 /* copy L3 (IPv[4|6]: src, dest) address */ 266 if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV4 | 267 ICE_TC_FLWR_FIELD_SRC_IPV4)) { 268 struct ice_tc_l3_hdr *l3_key, *l3_mask; 269 270 list[i].type = ice_proto_type_from_ipv4(inner); 271 l3_key = &headers->l3_key; 272 l3_mask = &headers->l3_mask; 273 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV4) { 274 list[i].h_u.ipv4_hdr.dst_addr = l3_key->dst_ipv4; 275 list[i].m_u.ipv4_hdr.dst_addr = l3_mask->dst_ipv4; 276 } 277 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV4) { 278 list[i].h_u.ipv4_hdr.src_addr = l3_key->src_ipv4; 279 list[i].m_u.ipv4_hdr.src_addr = l3_mask->src_ipv4; 280 } 281 i++; 282 } else if (flags & (ICE_TC_FLWR_FIELD_DEST_IPV6 | 283 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 284 struct ice_ipv6_hdr *ipv6_hdr, *ipv6_mask; 285 struct ice_tc_l3_hdr *l3_key, *l3_mask; 286 287 list[i].type = ice_proto_type_from_ipv6(inner); 288 ipv6_hdr = &list[i].h_u.ipv6_hdr; 289 ipv6_mask = &list[i].m_u.ipv6_hdr; 290 l3_key = &headers->l3_key; 291 l3_mask = &headers->l3_mask; 292 293 if (flags & ICE_TC_FLWR_FIELD_DEST_IPV6) { 294 memcpy(&ipv6_hdr->dst_addr, &l3_key->dst_ipv6_addr, 295 sizeof(l3_key->dst_ipv6_addr)); 296 memcpy(&ipv6_mask->dst_addr, &l3_mask->dst_ipv6_addr, 297 sizeof(l3_mask->dst_ipv6_addr)); 298 } 299 if (flags & ICE_TC_FLWR_FIELD_SRC_IPV6) { 300 memcpy(&ipv6_hdr->src_addr, &l3_key->src_ipv6_addr, 301 sizeof(l3_key->src_ipv6_addr)); 302 memcpy(&ipv6_mask->src_addr, &l3_mask->src_ipv6_addr, 303 sizeof(l3_mask->src_ipv6_addr)); 304 } 305 i++; 306 } 307 308 /* copy L4 (src, dest) port */ 309 if (flags & (ICE_TC_FLWR_FIELD_DEST_L4_PORT | 310 ICE_TC_FLWR_FIELD_SRC_L4_PORT)) { 311 struct ice_tc_l4_hdr *l4_key, *l4_mask; 312 313 list[i].type = ice_proto_type_from_l4_port(headers->l3_key.ip_proto); 314 l4_key = &headers->l4_key; 315 l4_mask = &headers->l4_mask; 316 317 if (flags & ICE_TC_FLWR_FIELD_DEST_L4_PORT) { 318 list[i].h_u.l4_hdr.dst_port = l4_key->dst_port; 319 list[i].m_u.l4_hdr.dst_port = l4_mask->dst_port; 320 } 321 if (flags & ICE_TC_FLWR_FIELD_SRC_L4_PORT) { 322 list[i].h_u.l4_hdr.src_port = l4_key->src_port; 323 list[i].m_u.l4_hdr.src_port = l4_mask->src_port; 324 } 325 i++; 326 } 327 328 return i; 329 } 330 331 /** 332 * ice_tc_tun_get_type - get the tunnel type 333 * @tunnel_dev: ptr to tunnel device 334 * 335 * This function detects appropriate tunnel_type if specified device is 336 * tunnel device such as VXLAN/Geneve 337 */ 338 static int ice_tc_tun_get_type(struct net_device *tunnel_dev) 339 { 340 if (netif_is_vxlan(tunnel_dev)) 341 return TNL_VXLAN; 342 if (netif_is_geneve(tunnel_dev)) 343 return TNL_GENEVE; 344 if (netif_is_gretap(tunnel_dev) || 345 netif_is_ip6gretap(tunnel_dev)) 346 return TNL_GRETAP; 347 return TNL_LAST; 348 } 349 350 bool ice_is_tunnel_supported(struct net_device *dev) 351 { 352 return ice_tc_tun_get_type(dev) != TNL_LAST; 353 } 354 355 static int 356 ice_eswitch_tc_parse_action(struct ice_tc_flower_fltr *fltr, 357 struct flow_action_entry *act) 358 { 359 struct ice_repr *repr; 360 361 switch (act->id) { 362 case FLOW_ACTION_DROP: 363 fltr->action.fltr_act = ICE_DROP_PACKET; 364 break; 365 366 case FLOW_ACTION_REDIRECT: 367 fltr->action.fltr_act = ICE_FWD_TO_VSI; 368 369 if (ice_is_port_repr_netdev(act->dev)) { 370 repr = ice_netdev_to_repr(act->dev); 371 372 fltr->dest_vsi = repr->src_vsi; 373 fltr->direction = ICE_ESWITCH_FLTR_INGRESS; 374 } else if (netif_is_ice(act->dev) || 375 ice_is_tunnel_supported(act->dev)) { 376 fltr->direction = ICE_ESWITCH_FLTR_EGRESS; 377 } else { 378 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported netdevice in switchdev mode"); 379 return -EINVAL; 380 } 381 382 break; 383 384 default: 385 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action in switchdev mode"); 386 return -EINVAL; 387 } 388 389 return 0; 390 } 391 392 static int 393 ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 394 { 395 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 396 struct ice_adv_rule_info rule_info = { 0 }; 397 struct ice_rule_query_data rule_added; 398 struct ice_hw *hw = &vsi->back->hw; 399 struct ice_adv_lkup_elem *list; 400 u32 flags = fltr->flags; 401 int lkups_cnt; 402 int ret; 403 int i; 404 405 if (!flags || (flags & ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT)) { 406 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported encap field(s)"); 407 return -EOPNOTSUPP; 408 } 409 410 lkups_cnt = ice_tc_count_lkups(flags, headers, fltr); 411 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 412 if (!list) 413 return -ENOMEM; 414 415 i = ice_tc_fill_rules(hw, flags, fltr, list, &rule_info, NULL); 416 if (i != lkups_cnt) { 417 ret = -EINVAL; 418 goto exit; 419 } 420 421 /* egress traffic is always redirect to uplink */ 422 if (fltr->direction == ICE_ESWITCH_FLTR_EGRESS) 423 fltr->dest_vsi = vsi->back->switchdev.uplink_vsi; 424 425 rule_info.sw_act.fltr_act = fltr->action.fltr_act; 426 if (fltr->action.fltr_act != ICE_DROP_PACKET) 427 rule_info.sw_act.vsi_handle = fltr->dest_vsi->idx; 428 /* For now, making priority to be highest, and it also becomes 429 * the priority for recipe which will get created as a result of 430 * new extraction sequence based on input set. 431 * Priority '7' is max val for switch recipe, higher the number 432 * results into order of switch rule evaluation. 433 */ 434 rule_info.priority = 7; 435 436 if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) { 437 rule_info.sw_act.flag |= ICE_FLTR_RX; 438 rule_info.sw_act.src = hw->pf_id; 439 rule_info.rx = true; 440 } else { 441 rule_info.sw_act.flag |= ICE_FLTR_TX; 442 rule_info.sw_act.src = vsi->idx; 443 rule_info.rx = false; 444 rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE; 445 rule_info.flags_info.act_valid = true; 446 } 447 448 /* specify the cookie as filter_rule_id */ 449 rule_info.fltr_rule_id = fltr->cookie; 450 451 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 452 if (ret == -EEXIST) { 453 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because it already exist"); 454 ret = -EINVAL; 455 goto exit; 456 } else if (ret) { 457 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter due to error"); 458 goto exit; 459 } 460 461 /* store the output params, which are needed later for removing 462 * advanced switch filter 463 */ 464 fltr->rid = rule_added.rid; 465 fltr->rule_id = rule_added.rule_id; 466 467 exit: 468 kfree(list); 469 return ret; 470 } 471 472 /** 473 * ice_add_tc_flower_adv_fltr - add appropriate filter rules 474 * @vsi: Pointer to VSI 475 * @tc_fltr: Pointer to TC flower filter structure 476 * 477 * based on filter parameters using Advance recipes supported 478 * by OS package. 479 */ 480 static int 481 ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi, 482 struct ice_tc_flower_fltr *tc_fltr) 483 { 484 struct ice_tc_flower_lyr_2_4_hdrs *headers = &tc_fltr->outer_headers; 485 struct ice_adv_rule_info rule_info = {0}; 486 struct ice_rule_query_data rule_added; 487 struct ice_adv_lkup_elem *list; 488 struct ice_pf *pf = vsi->back; 489 struct ice_hw *hw = &pf->hw; 490 u32 flags = tc_fltr->flags; 491 struct ice_vsi *ch_vsi; 492 struct device *dev; 493 u16 lkups_cnt = 0; 494 u16 l4_proto = 0; 495 int ret = 0; 496 u16 i = 0; 497 498 dev = ice_pf_to_dev(pf); 499 if (ice_is_safe_mode(pf)) { 500 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because driver is in safe mode"); 501 return -EOPNOTSUPP; 502 } 503 504 if (!flags || (flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV4 | 505 ICE_TC_FLWR_FIELD_ENC_SRC_IPV4 | 506 ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 507 ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 508 ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT))) { 509 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unsupported encap field(s)"); 510 return -EOPNOTSUPP; 511 } 512 513 /* get the channel (aka ADQ VSI) */ 514 if (tc_fltr->dest_vsi) 515 ch_vsi = tc_fltr->dest_vsi; 516 else 517 ch_vsi = vsi->tc_map_vsi[tc_fltr->action.tc_class]; 518 519 lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr); 520 list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC); 521 if (!list) 522 return -ENOMEM; 523 524 i = ice_tc_fill_rules(hw, flags, tc_fltr, list, &rule_info, &l4_proto); 525 if (i != lkups_cnt) { 526 ret = -EINVAL; 527 goto exit; 528 } 529 530 rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act; 531 if (tc_fltr->action.tc_class >= ICE_CHNL_START_TC) { 532 if (!ch_vsi) { 533 NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because specified destination doesn't exist"); 534 ret = -EINVAL; 535 goto exit; 536 } 537 538 rule_info.sw_act.fltr_act = ICE_FWD_TO_VSI; 539 rule_info.sw_act.vsi_handle = ch_vsi->idx; 540 rule_info.priority = 7; 541 rule_info.sw_act.src = hw->pf_id; 542 rule_info.rx = true; 543 dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n", 544 tc_fltr->action.tc_class, 545 rule_info.sw_act.vsi_handle, lkups_cnt); 546 } else { 547 rule_info.sw_act.flag |= ICE_FLTR_TX; 548 rule_info.sw_act.src = vsi->idx; 549 rule_info.rx = false; 550 } 551 552 /* specify the cookie as filter_rule_id */ 553 rule_info.fltr_rule_id = tc_fltr->cookie; 554 555 ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added); 556 if (ret == -EEXIST) { 557 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 558 "Unable to add filter because it already exist"); 559 ret = -EINVAL; 560 goto exit; 561 } else if (ret) { 562 NL_SET_ERR_MSG_MOD(tc_fltr->extack, 563 "Unable to add filter due to error"); 564 ret = -EIO; 565 goto exit; 566 } 567 568 /* store the output params, which are needed later for removing 569 * advanced switch filter 570 */ 571 tc_fltr->rid = rule_added.rid; 572 tc_fltr->rule_id = rule_added.rule_id; 573 if (tc_fltr->action.tc_class > 0 && ch_vsi) { 574 /* For PF ADQ, VSI type is set as ICE_VSI_CHNL, and 575 * for PF ADQ filter, it is not yet set in tc_fltr, 576 * hence store the dest_vsi ptr in tc_fltr 577 */ 578 if (ch_vsi->type == ICE_VSI_CHNL) 579 tc_fltr->dest_vsi = ch_vsi; 580 /* keep track of advanced switch filter for 581 * destination VSI (channel VSI) 582 */ 583 ch_vsi->num_chnl_fltr++; 584 /* in this case, dest_id is VSI handle (sw handle) */ 585 tc_fltr->dest_id = rule_added.vsi_handle; 586 587 /* keeps track of channel filters for PF VSI */ 588 if (vsi->type == ICE_VSI_PF && 589 (flags & (ICE_TC_FLWR_FIELD_DST_MAC | 590 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 591 pf->num_dmac_chnl_fltrs++; 592 } 593 dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x) for TC %u, rid %u, rule_id %u, vsi_idx %u\n", 594 lkups_cnt, flags, 595 tc_fltr->action.tc_class, rule_added.rid, 596 rule_added.rule_id, rule_added.vsi_handle); 597 exit: 598 kfree(list); 599 return ret; 600 } 601 602 /** 603 * ice_tc_set_ipv4 - Parse IPv4 addresses from TC flower filter 604 * @match: Pointer to flow match structure 605 * @fltr: Pointer to filter structure 606 * @headers: inner or outer header fields 607 * @is_encap: set true for tunnel IPv4 address 608 */ 609 static int 610 ice_tc_set_ipv4(struct flow_match_ipv4_addrs *match, 611 struct ice_tc_flower_fltr *fltr, 612 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 613 { 614 if (match->key->dst) { 615 if (is_encap) 616 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV4; 617 else 618 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV4; 619 headers->l3_key.dst_ipv4 = match->key->dst; 620 headers->l3_mask.dst_ipv4 = match->mask->dst; 621 } 622 if (match->key->src) { 623 if (is_encap) 624 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV4; 625 else 626 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV4; 627 headers->l3_key.src_ipv4 = match->key->src; 628 headers->l3_mask.src_ipv4 = match->mask->src; 629 } 630 return 0; 631 } 632 633 /** 634 * ice_tc_set_ipv6 - Parse IPv6 addresses from TC flower filter 635 * @match: Pointer to flow match structure 636 * @fltr: Pointer to filter structure 637 * @headers: inner or outer header fields 638 * @is_encap: set true for tunnel IPv6 address 639 */ 640 static int 641 ice_tc_set_ipv6(struct flow_match_ipv6_addrs *match, 642 struct ice_tc_flower_fltr *fltr, 643 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 644 { 645 struct ice_tc_l3_hdr *l3_key, *l3_mask; 646 647 /* src and dest IPV6 address should not be LOOPBACK 648 * (0:0:0:0:0:0:0:1), which can be represented as ::1 649 */ 650 if (ipv6_addr_loopback(&match->key->dst) || 651 ipv6_addr_loopback(&match->key->src)) { 652 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad IPv6, addr is LOOPBACK"); 653 return -EINVAL; 654 } 655 /* if src/dest IPv6 address is *,* error */ 656 if (ipv6_addr_any(&match->mask->dst) && 657 ipv6_addr_any(&match->mask->src)) { 658 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad src/dest IPv6, addr is any"); 659 return -EINVAL; 660 } 661 if (!ipv6_addr_any(&match->mask->dst)) { 662 if (is_encap) 663 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_IPV6; 664 else 665 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_IPV6; 666 } 667 if (!ipv6_addr_any(&match->mask->src)) { 668 if (is_encap) 669 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_IPV6; 670 else 671 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_IPV6; 672 } 673 674 l3_key = &headers->l3_key; 675 l3_mask = &headers->l3_mask; 676 677 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_SRC_IPV6 | 678 ICE_TC_FLWR_FIELD_SRC_IPV6)) { 679 memcpy(&l3_key->src_ipv6_addr, &match->key->src.s6_addr, 680 sizeof(match->key->src.s6_addr)); 681 memcpy(&l3_mask->src_ipv6_addr, &match->mask->src.s6_addr, 682 sizeof(match->mask->src.s6_addr)); 683 } 684 if (fltr->flags & (ICE_TC_FLWR_FIELD_ENC_DEST_IPV6 | 685 ICE_TC_FLWR_FIELD_DEST_IPV6)) { 686 memcpy(&l3_key->dst_ipv6_addr, &match->key->dst.s6_addr, 687 sizeof(match->key->dst.s6_addr)); 688 memcpy(&l3_mask->dst_ipv6_addr, &match->mask->dst.s6_addr, 689 sizeof(match->mask->dst.s6_addr)); 690 } 691 692 return 0; 693 } 694 695 /** 696 * ice_tc_set_port - Parse ports from TC flower filter 697 * @match: Flow match structure 698 * @fltr: Pointer to filter structure 699 * @headers: inner or outer header fields 700 * @is_encap: set true for tunnel port 701 */ 702 static int 703 ice_tc_set_port(struct flow_match_ports match, 704 struct ice_tc_flower_fltr *fltr, 705 struct ice_tc_flower_lyr_2_4_hdrs *headers, bool is_encap) 706 { 707 if (match.key->dst) { 708 if (is_encap) 709 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT; 710 else 711 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT; 712 fltr->flags |= ICE_TC_FLWR_FIELD_DEST_L4_PORT; 713 headers->l4_key.dst_port = match.key->dst; 714 headers->l4_mask.dst_port = match.mask->dst; 715 } 716 if (match.key->src) { 717 if (is_encap) 718 fltr->flags |= ICE_TC_FLWR_FIELD_ENC_SRC_L4_PORT; 719 else 720 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT; 721 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_L4_PORT; 722 headers->l4_key.src_port = match.key->src; 723 headers->l4_mask.src_port = match.mask->src; 724 } 725 return 0; 726 } 727 728 static struct net_device * 729 ice_get_tunnel_device(struct net_device *dev, struct flow_rule *rule) 730 { 731 struct flow_action_entry *act; 732 int i; 733 734 if (ice_is_tunnel_supported(dev)) 735 return dev; 736 737 flow_action_for_each(i, act, &rule->action) { 738 if (act->id == FLOW_ACTION_REDIRECT && 739 ice_is_tunnel_supported(act->dev)) 740 return act->dev; 741 } 742 743 return NULL; 744 } 745 746 static int 747 ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule, 748 struct ice_tc_flower_fltr *fltr) 749 { 750 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 751 struct flow_match_control enc_control; 752 753 fltr->tunnel_type = ice_tc_tun_get_type(dev); 754 headers->l3_key.ip_proto = IPPROTO_UDP; 755 756 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 757 struct flow_match_enc_keyid enc_keyid; 758 759 flow_rule_match_enc_keyid(rule, &enc_keyid); 760 761 if (!enc_keyid.mask->keyid || 762 enc_keyid.mask->keyid != cpu_to_be32(ICE_TC_FLOWER_MASK_32)) 763 return -EINVAL; 764 765 fltr->flags |= ICE_TC_FLWR_FIELD_TENANT_ID; 766 fltr->tenant_id = enc_keyid.key->keyid; 767 } 768 769 flow_rule_match_enc_control(rule, &enc_control); 770 771 if (enc_control.key->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 772 struct flow_match_ipv4_addrs match; 773 774 flow_rule_match_enc_ipv4_addrs(rule, &match); 775 if (ice_tc_set_ipv4(&match, fltr, headers, true)) 776 return -EINVAL; 777 } else if (enc_control.key->addr_type == 778 FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 779 struct flow_match_ipv6_addrs match; 780 781 flow_rule_match_enc_ipv6_addrs(rule, &match); 782 if (ice_tc_set_ipv6(&match, fltr, headers, true)) 783 return -EINVAL; 784 } 785 786 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { 787 struct flow_match_ip match; 788 789 flow_rule_match_enc_ip(rule, &match); 790 headers->l3_key.tos = match.key->tos; 791 headers->l3_key.ttl = match.key->ttl; 792 headers->l3_mask.tos = match.mask->tos; 793 headers->l3_mask.ttl = match.mask->ttl; 794 } 795 796 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) && 797 fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) { 798 struct flow_match_ports match; 799 800 flow_rule_match_enc_ports(rule, &match); 801 if (ice_tc_set_port(match, fltr, headers, true)) 802 return -EINVAL; 803 } 804 805 return 0; 806 } 807 808 /** 809 * ice_parse_cls_flower - Parse TC flower filters provided by kernel 810 * @vsi: Pointer to the VSI 811 * @filter_dev: Pointer to device on which filter is being added 812 * @f: Pointer to struct flow_cls_offload 813 * @fltr: Pointer to filter structure 814 */ 815 static int 816 ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi, 817 struct flow_cls_offload *f, 818 struct ice_tc_flower_fltr *fltr) 819 { 820 struct ice_tc_flower_lyr_2_4_hdrs *headers = &fltr->outer_headers; 821 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 822 u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0; 823 struct flow_dissector *dissector; 824 struct net_device *tunnel_dev; 825 826 dissector = rule->match.dissector; 827 828 if (dissector->used_keys & 829 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | 830 BIT(FLOW_DISSECTOR_KEY_BASIC) | 831 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 832 BIT(FLOW_DISSECTOR_KEY_VLAN) | 833 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 834 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 835 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | 836 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 837 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 838 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 839 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | 840 BIT(FLOW_DISSECTOR_KEY_ENC_IP) | 841 BIT(FLOW_DISSECTOR_KEY_PORTS))) { 842 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported key used"); 843 return -EOPNOTSUPP; 844 } 845 846 tunnel_dev = ice_get_tunnel_device(filter_dev, rule); 847 if (tunnel_dev) { 848 int err; 849 850 filter_dev = tunnel_dev; 851 852 err = ice_parse_tunnel_attr(filter_dev, rule, fltr); 853 if (err) { 854 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to parse TC flower tunnel attributes"); 855 return err; 856 } 857 858 /* header pointers should point to the inner headers, outer 859 * header were already set by ice_parse_tunnel_attr 860 */ 861 headers = &fltr->inner_headers; 862 } else if (dissector->used_keys & 863 (BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | 864 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | 865 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | 866 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS))) { 867 NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel"); 868 return -EOPNOTSUPP; 869 } else { 870 fltr->tunnel_type = TNL_LAST; 871 } 872 873 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 874 struct flow_match_basic match; 875 876 flow_rule_match_basic(rule, &match); 877 878 n_proto_key = ntohs(match.key->n_proto); 879 n_proto_mask = ntohs(match.mask->n_proto); 880 881 if (n_proto_key == ETH_P_ALL || n_proto_key == 0) { 882 n_proto_key = 0; 883 n_proto_mask = 0; 884 } else { 885 fltr->flags |= ICE_TC_FLWR_FIELD_ETH_TYPE_ID; 886 } 887 888 headers->l2_key.n_proto = cpu_to_be16(n_proto_key); 889 headers->l2_mask.n_proto = cpu_to_be16(n_proto_mask); 890 headers->l3_key.ip_proto = match.key->ip_proto; 891 } 892 893 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 894 struct flow_match_eth_addrs match; 895 896 flow_rule_match_eth_addrs(rule, &match); 897 898 if (!is_zero_ether_addr(match.key->dst)) { 899 ether_addr_copy(headers->l2_key.dst_mac, 900 match.key->dst); 901 ether_addr_copy(headers->l2_mask.dst_mac, 902 match.mask->dst); 903 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 904 } 905 906 if (!is_zero_ether_addr(match.key->src)) { 907 ether_addr_copy(headers->l2_key.src_mac, 908 match.key->src); 909 ether_addr_copy(headers->l2_mask.src_mac, 910 match.mask->src); 911 fltr->flags |= ICE_TC_FLWR_FIELD_SRC_MAC; 912 } 913 } 914 915 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) || 916 is_vlan_dev(filter_dev)) { 917 struct flow_dissector_key_vlan mask; 918 struct flow_dissector_key_vlan key; 919 struct flow_match_vlan match; 920 921 if (is_vlan_dev(filter_dev)) { 922 match.key = &key; 923 match.key->vlan_id = vlan_dev_vlan_id(filter_dev); 924 match.key->vlan_priority = 0; 925 match.mask = &mask; 926 memset(match.mask, 0xff, sizeof(*match.mask)); 927 match.mask->vlan_priority = 0; 928 } else { 929 flow_rule_match_vlan(rule, &match); 930 } 931 932 if (match.mask->vlan_id) { 933 if (match.mask->vlan_id == VLAN_VID_MASK) { 934 fltr->flags |= ICE_TC_FLWR_FIELD_VLAN; 935 } else { 936 NL_SET_ERR_MSG_MOD(fltr->extack, "Bad VLAN mask"); 937 return -EINVAL; 938 } 939 } 940 941 headers->vlan_hdr.vlan_id = 942 cpu_to_be16(match.key->vlan_id & VLAN_VID_MASK); 943 if (match.mask->vlan_priority) 944 headers->vlan_hdr.vlan_prio = match.key->vlan_priority; 945 } 946 947 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 948 struct flow_match_control match; 949 950 flow_rule_match_control(rule, &match); 951 952 addr_type = match.key->addr_type; 953 } 954 955 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 956 struct flow_match_ipv4_addrs match; 957 958 flow_rule_match_ipv4_addrs(rule, &match); 959 if (ice_tc_set_ipv4(&match, fltr, headers, false)) 960 return -EINVAL; 961 } 962 963 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 964 struct flow_match_ipv6_addrs match; 965 966 flow_rule_match_ipv6_addrs(rule, &match); 967 if (ice_tc_set_ipv6(&match, fltr, headers, false)) 968 return -EINVAL; 969 } 970 971 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 972 struct flow_match_ports match; 973 974 flow_rule_match_ports(rule, &match); 975 if (ice_tc_set_port(match, fltr, headers, false)) 976 return -EINVAL; 977 switch (headers->l3_key.ip_proto) { 978 case IPPROTO_TCP: 979 case IPPROTO_UDP: 980 break; 981 default: 982 NL_SET_ERR_MSG_MOD(fltr->extack, "Only UDP and TCP transport are supported"); 983 return -EINVAL; 984 } 985 } 986 return 0; 987 } 988 989 /** 990 * ice_add_switch_fltr - Add TC flower filters 991 * @vsi: Pointer to VSI 992 * @fltr: Pointer to struct ice_tc_flower_fltr 993 * 994 * Add filter in HW switch block 995 */ 996 static int 997 ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 998 { 999 if (fltr->action.fltr_act == ICE_FWD_TO_QGRP) 1000 return -EOPNOTSUPP; 1001 1002 if (ice_is_eswitch_mode_switchdev(vsi->back)) 1003 return ice_eswitch_add_tc_fltr(vsi, fltr); 1004 1005 return ice_add_tc_flower_adv_fltr(vsi, fltr); 1006 } 1007 1008 /** 1009 * ice_handle_tclass_action - Support directing to a traffic class 1010 * @vsi: Pointer to VSI 1011 * @cls_flower: Pointer to TC flower offload structure 1012 * @fltr: Pointer to TC flower filter structure 1013 * 1014 * Support directing traffic to a traffic class 1015 */ 1016 static int 1017 ice_handle_tclass_action(struct ice_vsi *vsi, 1018 struct flow_cls_offload *cls_flower, 1019 struct ice_tc_flower_fltr *fltr) 1020 { 1021 int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid); 1022 struct ice_vsi *main_vsi; 1023 1024 if (tc < 0) { 1025 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because specified destination is invalid"); 1026 return -EINVAL; 1027 } 1028 if (!tc) { 1029 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of invalid destination"); 1030 return -EINVAL; 1031 } 1032 1033 if (!(vsi->all_enatc & BIT(tc))) { 1034 NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of non-existence destination"); 1035 return -EINVAL; 1036 } 1037 1038 /* Redirect to a TC class or Queue Group */ 1039 main_vsi = ice_get_main_vsi(vsi->back); 1040 if (!main_vsi || !main_vsi->netdev) { 1041 NL_SET_ERR_MSG_MOD(fltr->extack, 1042 "Unable to add filter because of invalid netdevice"); 1043 return -EINVAL; 1044 } 1045 1046 if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) && 1047 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1048 ICE_TC_FLWR_FIELD_SRC_MAC))) { 1049 NL_SET_ERR_MSG_MOD(fltr->extack, 1050 "Unable to add filter because filter using tunnel key and inner MAC is unsupported combination"); 1051 return -EOPNOTSUPP; 1052 } 1053 1054 /* For ADQ, filter must include dest MAC address, otherwise unwanted 1055 * packets with unrelated MAC address get delivered to ADQ VSIs as long 1056 * as remaining filter criteria is satisfied such as dest IP address 1057 * and dest/src L4 port. Following code is trying to handle: 1058 * 1. For non-tunnel, if user specify MAC addresses, use them (means 1059 * this code won't do anything 1060 * 2. For non-tunnel, if user didn't specify MAC address, add implicit 1061 * dest MAC to be lower netdev's active unicast MAC address 1062 */ 1063 if (!(fltr->flags & ICE_TC_FLWR_FIELD_DST_MAC)) { 1064 ether_addr_copy(fltr->outer_headers.l2_key.dst_mac, 1065 main_vsi->netdev->dev_addr); 1066 eth_broadcast_addr(fltr->outer_headers.l2_mask.dst_mac); 1067 fltr->flags |= ICE_TC_FLWR_FIELD_DST_MAC; 1068 } 1069 1070 /* validate specified dest MAC address, make sure either it belongs to 1071 * lower netdev or any of MACVLAN. MACVLANs MAC address are added as 1072 * unicast MAC filter destined to main VSI. 1073 */ 1074 if (!ice_mac_fltr_exist(&main_vsi->back->hw, 1075 fltr->outer_headers.l2_key.dst_mac, 1076 main_vsi->idx)) { 1077 NL_SET_ERR_MSG_MOD(fltr->extack, 1078 "Unable to add filter because legacy MAC filter for specified destination doesn't exist"); 1079 return -EINVAL; 1080 } 1081 1082 /* Make sure VLAN is already added to main VSI, before allowing ADQ to 1083 * add a VLAN based filter such as MAC + VLAN + L4 port. 1084 */ 1085 if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) { 1086 u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id); 1087 1088 if (!ice_vlan_fltr_exist(&main_vsi->back->hw, vlan_id, 1089 main_vsi->idx)) { 1090 NL_SET_ERR_MSG_MOD(fltr->extack, 1091 "Unable to add filter because legacy VLAN filter for specified destination doesn't exist"); 1092 return -EINVAL; 1093 } 1094 } 1095 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1096 fltr->action.tc_class = tc; 1097 1098 return 0; 1099 } 1100 1101 /** 1102 * ice_parse_tc_flower_actions - Parse the actions for a TC filter 1103 * @vsi: Pointer to VSI 1104 * @cls_flower: Pointer to TC flower offload structure 1105 * @fltr: Pointer to TC flower filter structure 1106 * 1107 * Parse the actions for a TC filter 1108 */ 1109 static int 1110 ice_parse_tc_flower_actions(struct ice_vsi *vsi, 1111 struct flow_cls_offload *cls_flower, 1112 struct ice_tc_flower_fltr *fltr) 1113 { 1114 struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower); 1115 struct flow_action *flow_action = &rule->action; 1116 struct flow_action_entry *act; 1117 int i; 1118 1119 if (cls_flower->classid) 1120 return ice_handle_tclass_action(vsi, cls_flower, fltr); 1121 1122 if (!flow_action_has_entries(flow_action)) 1123 return -EINVAL; 1124 1125 flow_action_for_each(i, act, flow_action) { 1126 if (ice_is_eswitch_mode_switchdev(vsi->back)) { 1127 int err = ice_eswitch_tc_parse_action(fltr, act); 1128 1129 if (err) 1130 return err; 1131 continue; 1132 } 1133 /* Allow only one rule per filter */ 1134 1135 /* Drop action */ 1136 if (act->id == FLOW_ACTION_DROP) { 1137 NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action DROP"); 1138 return -EINVAL; 1139 } 1140 fltr->action.fltr_act = ICE_FWD_TO_VSI; 1141 } 1142 return 0; 1143 } 1144 1145 /** 1146 * ice_del_tc_fltr - deletes a filter from HW table 1147 * @vsi: Pointer to VSI 1148 * @fltr: Pointer to struct ice_tc_flower_fltr 1149 * 1150 * This function deletes a filter from HW table and manages book-keeping 1151 */ 1152 static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr) 1153 { 1154 struct ice_rule_query_data rule_rem; 1155 struct ice_pf *pf = vsi->back; 1156 int err; 1157 1158 rule_rem.rid = fltr->rid; 1159 rule_rem.rule_id = fltr->rule_id; 1160 rule_rem.vsi_handle = fltr->dest_id; 1161 err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem); 1162 if (err) { 1163 if (err == -ENOENT) { 1164 NL_SET_ERR_MSG_MOD(fltr->extack, "Filter does not exist"); 1165 return -ENOENT; 1166 } 1167 NL_SET_ERR_MSG_MOD(fltr->extack, "Failed to delete TC flower filter"); 1168 return -EIO; 1169 } 1170 1171 /* update advanced switch filter count for destination 1172 * VSI if filter destination was VSI 1173 */ 1174 if (fltr->dest_vsi) { 1175 if (fltr->dest_vsi->type == ICE_VSI_CHNL) { 1176 fltr->dest_vsi->num_chnl_fltr--; 1177 1178 /* keeps track of channel filters for PF VSI */ 1179 if (vsi->type == ICE_VSI_PF && 1180 (fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC | 1181 ICE_TC_FLWR_FIELD_ENC_DST_MAC))) 1182 pf->num_dmac_chnl_fltrs--; 1183 } 1184 } 1185 return 0; 1186 } 1187 1188 /** 1189 * ice_add_tc_fltr - adds a TC flower filter 1190 * @netdev: Pointer to netdev 1191 * @vsi: Pointer to VSI 1192 * @f: Pointer to flower offload structure 1193 * @__fltr: Pointer to struct ice_tc_flower_fltr 1194 * 1195 * This function parses TC-flower input fields, parses action, 1196 * and adds a filter. 1197 */ 1198 static int 1199 ice_add_tc_fltr(struct net_device *netdev, struct ice_vsi *vsi, 1200 struct flow_cls_offload *f, 1201 struct ice_tc_flower_fltr **__fltr) 1202 { 1203 struct ice_tc_flower_fltr *fltr; 1204 int err; 1205 1206 /* by default, set output to be INVALID */ 1207 *__fltr = NULL; 1208 1209 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL); 1210 if (!fltr) 1211 return -ENOMEM; 1212 1213 fltr->cookie = f->cookie; 1214 fltr->extack = f->common.extack; 1215 fltr->src_vsi = vsi; 1216 INIT_HLIST_NODE(&fltr->tc_flower_node); 1217 1218 err = ice_parse_cls_flower(netdev, vsi, f, fltr); 1219 if (err < 0) 1220 goto err; 1221 1222 err = ice_parse_tc_flower_actions(vsi, f, fltr); 1223 if (err < 0) 1224 goto err; 1225 1226 err = ice_add_switch_fltr(vsi, fltr); 1227 if (err < 0) 1228 goto err; 1229 1230 /* return the newly created filter */ 1231 *__fltr = fltr; 1232 1233 return 0; 1234 err: 1235 kfree(fltr); 1236 return err; 1237 } 1238 1239 /** 1240 * ice_find_tc_flower_fltr - Find the TC flower filter in the list 1241 * @pf: Pointer to PF 1242 * @cookie: filter specific cookie 1243 */ 1244 static struct ice_tc_flower_fltr * 1245 ice_find_tc_flower_fltr(struct ice_pf *pf, unsigned long cookie) 1246 { 1247 struct ice_tc_flower_fltr *fltr; 1248 1249 hlist_for_each_entry(fltr, &pf->tc_flower_fltr_list, tc_flower_node) 1250 if (cookie == fltr->cookie) 1251 return fltr; 1252 1253 return NULL; 1254 } 1255 1256 /** 1257 * ice_add_cls_flower - add TC flower filters 1258 * @netdev: Pointer to filter device 1259 * @vsi: Pointer to VSI 1260 * @cls_flower: Pointer to flower offload structure 1261 */ 1262 int 1263 ice_add_cls_flower(struct net_device *netdev, struct ice_vsi *vsi, 1264 struct flow_cls_offload *cls_flower) 1265 { 1266 struct netlink_ext_ack *extack = cls_flower->common.extack; 1267 struct net_device *vsi_netdev = vsi->netdev; 1268 struct ice_tc_flower_fltr *fltr; 1269 struct ice_pf *pf = vsi->back; 1270 int err; 1271 1272 if (ice_is_reset_in_progress(pf->state)) 1273 return -EBUSY; 1274 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags)) 1275 return -EINVAL; 1276 1277 if (ice_is_port_repr_netdev(netdev)) 1278 vsi_netdev = netdev; 1279 1280 if (!(vsi_netdev->features & NETIF_F_HW_TC) && 1281 !test_bit(ICE_FLAG_CLS_FLOWER, pf->flags)) { 1282 /* Based on TC indirect notifications from kernel, all ice 1283 * devices get an instance of rule from higher level device. 1284 * Avoid triggering explicit error in this case. 1285 */ 1286 if (netdev == vsi_netdev) 1287 NL_SET_ERR_MSG_MOD(extack, "can't apply TC flower filters, turn ON hw-tc-offload and try again"); 1288 return -EINVAL; 1289 } 1290 1291 /* avoid duplicate entries, if exists - return error */ 1292 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1293 if (fltr) { 1294 NL_SET_ERR_MSG_MOD(extack, "filter cookie already exists, ignoring"); 1295 return -EEXIST; 1296 } 1297 1298 /* prep and add TC-flower filter in HW */ 1299 err = ice_add_tc_fltr(netdev, vsi, cls_flower, &fltr); 1300 if (err) 1301 return err; 1302 1303 /* add filter into an ordered list */ 1304 hlist_add_head(&fltr->tc_flower_node, &pf->tc_flower_fltr_list); 1305 return 0; 1306 } 1307 1308 /** 1309 * ice_del_cls_flower - delete TC flower filters 1310 * @vsi: Pointer to VSI 1311 * @cls_flower: Pointer to struct flow_cls_offload 1312 */ 1313 int 1314 ice_del_cls_flower(struct ice_vsi *vsi, struct flow_cls_offload *cls_flower) 1315 { 1316 struct ice_tc_flower_fltr *fltr; 1317 struct ice_pf *pf = vsi->back; 1318 int err; 1319 1320 /* find filter */ 1321 fltr = ice_find_tc_flower_fltr(pf, cls_flower->cookie); 1322 if (!fltr) { 1323 if (!test_bit(ICE_FLAG_TC_MQPRIO, pf->flags) && 1324 hlist_empty(&pf->tc_flower_fltr_list)) 1325 return 0; 1326 1327 NL_SET_ERR_MSG_MOD(cls_flower->common.extack, "failed to delete TC flower filter because unable to find it"); 1328 return -EINVAL; 1329 } 1330 1331 fltr->extack = cls_flower->common.extack; 1332 /* delete filter from HW */ 1333 err = ice_del_tc_fltr(vsi, fltr); 1334 if (err) 1335 return err; 1336 1337 /* delete filter from an ordered list */ 1338 hlist_del(&fltr->tc_flower_node); 1339 1340 /* free the filter node */ 1341 kfree(fltr); 1342 1343 return 0; 1344 } 1345 1346 /** 1347 * ice_replay_tc_fltrs - replay TC filters 1348 * @pf: pointer to PF struct 1349 */ 1350 void ice_replay_tc_fltrs(struct ice_pf *pf) 1351 { 1352 struct ice_tc_flower_fltr *fltr; 1353 struct hlist_node *node; 1354 1355 hlist_for_each_entry_safe(fltr, node, 1356 &pf->tc_flower_fltr_list, 1357 tc_flower_node) { 1358 fltr->extack = NULL; 1359 ice_add_switch_fltr(fltr->src_vsi, fltr); 1360 } 1361 } 1362