1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */ 3 4 #include <linux/kernel.h> 5 #include <linux/errno.h> 6 #include <linux/netdevice.h> 7 #include <linux/log2.h> 8 #include <net/net_namespace.h> 9 #include <net/flow_dissector.h> 10 #include <net/pkt_cls.h> 11 #include <net/tc_act/tc_gact.h> 12 #include <net/tc_act/tc_mirred.h> 13 #include <net/tc_act/tc_vlan.h> 14 15 #include "spectrum.h" 16 #include "core_acl_flex_keys.h" 17 18 static int mlxsw_sp_policer_validate(const struct flow_action *action, 19 const struct flow_action_entry *act, 20 struct netlink_ext_ack *extack) 21 { 22 if (act->police.exceed.act_id != FLOW_ACTION_DROP) { 23 NL_SET_ERR_MSG_MOD(extack, 24 "Offload not supported when exceed action is not drop"); 25 return -EOPNOTSUPP; 26 } 27 28 if (act->police.notexceed.act_id != FLOW_ACTION_PIPE && 29 act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) { 30 NL_SET_ERR_MSG_MOD(extack, 31 "Offload not supported when conform action is not pipe or ok"); 32 return -EOPNOTSUPP; 33 } 34 35 if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT && 36 !flow_action_is_last_entry(action, act)) { 37 NL_SET_ERR_MSG_MOD(extack, 38 "Offload not supported when conform action is ok, but action is not last"); 39 return -EOPNOTSUPP; 40 } 41 42 if (act->police.peakrate_bytes_ps || 43 act->police.avrate || act->police.overhead) { 44 NL_SET_ERR_MSG_MOD(extack, 45 "Offload not supported when peakrate/avrate/overhead is configured"); 46 return -EOPNOTSUPP; 47 } 48 49 if (act->police.rate_pkt_ps) { 50 NL_SET_ERR_MSG_MOD(extack, 51 "QoS offload not support packets per second"); 52 return -EOPNOTSUPP; 53 } 54 55 return 0; 56 } 57 58 static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp, 59 struct mlxsw_sp_flow_block *block, 60 struct mlxsw_sp_acl_rule_info *rulei, 61 struct flow_action *flow_action, 62 struct netlink_ext_ack *extack) 63 { 64 const struct flow_action_entry *act; 65 int mirror_act_count = 0; 66 int police_act_count = 0; 67 int sample_act_count = 0; 68 int err, i; 69 70 if (!flow_action_has_entries(flow_action)) 71 return 0; 72 if (!flow_action_mixed_hw_stats_check(flow_action, extack)) 73 return -EOPNOTSUPP; 74 75 act = flow_action_first_entry_get(flow_action); 76 if (act->hw_stats & FLOW_ACTION_HW_STATS_DISABLED) { 77 /* Nothing to do */ 78 } else if (act->hw_stats & FLOW_ACTION_HW_STATS_IMMEDIATE) { 79 /* Count action is inserted first */ 80 err = mlxsw_sp_acl_rulei_act_count(mlxsw_sp, rulei, extack); 81 if (err) 82 return err; 83 } else { 84 NL_SET_ERR_MSG_MOD(extack, "Unsupported action HW stats type"); 85 return -EOPNOTSUPP; 86 } 87 88 flow_action_for_each(i, act, flow_action) { 89 switch (act->id) { 90 case FLOW_ACTION_ACCEPT: 91 err = mlxsw_sp_acl_rulei_act_terminate(rulei); 92 if (err) { 93 NL_SET_ERR_MSG_MOD(extack, "Cannot append terminate action"); 94 return err; 95 } 96 break; 97 case FLOW_ACTION_DROP: { 98 bool ingress; 99 100 if (mlxsw_sp_flow_block_is_mixed_bound(block)) { 101 NL_SET_ERR_MSG_MOD(extack, "Drop action is not supported when block is bound to ingress and egress"); 102 return -EOPNOTSUPP; 103 } 104 ingress = mlxsw_sp_flow_block_is_ingress_bound(block); 105 err = mlxsw_sp_acl_rulei_act_drop(rulei, ingress, 106 act->user_cookie, extack); 107 if (err) { 108 NL_SET_ERR_MSG_MOD(extack, "Cannot append drop action"); 109 return err; 110 } 111 112 /* Forbid block with this rulei to be bound 113 * to ingress/egress in future. Ingress rule is 114 * a blocker for egress and vice versa. 115 */ 116 if (ingress) 117 rulei->egress_bind_blocker = 1; 118 else 119 rulei->ingress_bind_blocker = 1; 120 } 121 break; 122 case FLOW_ACTION_TRAP: 123 err = mlxsw_sp_acl_rulei_act_trap(rulei); 124 if (err) { 125 NL_SET_ERR_MSG_MOD(extack, "Cannot append trap action"); 126 return err; 127 } 128 break; 129 case FLOW_ACTION_GOTO: { 130 u32 chain_index = act->chain_index; 131 struct mlxsw_sp_acl_ruleset *ruleset; 132 u16 group_id; 133 134 ruleset = mlxsw_sp_acl_ruleset_lookup(mlxsw_sp, block, 135 chain_index, 136 MLXSW_SP_ACL_PROFILE_FLOWER); 137 if (IS_ERR(ruleset)) 138 return PTR_ERR(ruleset); 139 140 group_id = mlxsw_sp_acl_ruleset_group_id(ruleset); 141 err = mlxsw_sp_acl_rulei_act_jump(rulei, group_id); 142 if (err) { 143 NL_SET_ERR_MSG_MOD(extack, "Cannot append jump action"); 144 return err; 145 } 146 } 147 break; 148 case FLOW_ACTION_REDIRECT: { 149 struct net_device *out_dev; 150 struct mlxsw_sp_fid *fid; 151 u16 fid_index; 152 153 if (mlxsw_sp_flow_block_is_egress_bound(block)) { 154 NL_SET_ERR_MSG_MOD(extack, "Redirect action is not supported on egress"); 155 return -EOPNOTSUPP; 156 } 157 158 /* Forbid block with this rulei to be bound 159 * to egress in future. 160 */ 161 rulei->egress_bind_blocker = 1; 162 163 fid = mlxsw_sp_acl_dummy_fid(mlxsw_sp); 164 fid_index = mlxsw_sp_fid_index(fid); 165 err = mlxsw_sp_acl_rulei_act_fid_set(mlxsw_sp, rulei, 166 fid_index, extack); 167 if (err) 168 return err; 169 170 out_dev = act->dev; 171 err = mlxsw_sp_acl_rulei_act_fwd(mlxsw_sp, rulei, 172 out_dev, extack); 173 if (err) 174 return err; 175 } 176 break; 177 case FLOW_ACTION_MIRRED: { 178 struct net_device *out_dev = act->dev; 179 180 if (mirror_act_count++) { 181 NL_SET_ERR_MSG_MOD(extack, "Multiple mirror actions per rule are not supported"); 182 return -EOPNOTSUPP; 183 } 184 185 err = mlxsw_sp_acl_rulei_act_mirror(mlxsw_sp, rulei, 186 block, out_dev, 187 extack); 188 if (err) 189 return err; 190 } 191 break; 192 case FLOW_ACTION_VLAN_MANGLE: { 193 u16 proto = be16_to_cpu(act->vlan.proto); 194 u8 prio = act->vlan.prio; 195 u16 vid = act->vlan.vid; 196 197 err = mlxsw_sp_acl_rulei_act_vlan(mlxsw_sp, rulei, 198 act->id, vid, 199 proto, prio, extack); 200 if (err) 201 return err; 202 break; 203 } 204 case FLOW_ACTION_PRIORITY: 205 err = mlxsw_sp_acl_rulei_act_priority(mlxsw_sp, rulei, 206 act->priority, 207 extack); 208 if (err) 209 return err; 210 break; 211 case FLOW_ACTION_MANGLE: { 212 enum flow_action_mangle_base htype = act->mangle.htype; 213 __be32 be_mask = (__force __be32) act->mangle.mask; 214 __be32 be_val = (__force __be32) act->mangle.val; 215 u32 offset = act->mangle.offset; 216 u32 mask = be32_to_cpu(be_mask); 217 u32 val = be32_to_cpu(be_val); 218 219 err = mlxsw_sp_acl_rulei_act_mangle(mlxsw_sp, rulei, 220 htype, offset, 221 mask, val, extack); 222 if (err) 223 return err; 224 break; 225 } 226 case FLOW_ACTION_POLICE: { 227 u32 burst; 228 229 if (police_act_count++) { 230 NL_SET_ERR_MSG_MOD(extack, "Multiple police actions per rule are not supported"); 231 return -EOPNOTSUPP; 232 } 233 234 err = mlxsw_sp_policer_validate(flow_action, act, extack); 235 if (err) 236 return err; 237 238 /* The kernel might adjust the requested burst size so 239 * that it is not exactly a power of two. Re-adjust it 240 * here since the hardware only supports burst sizes 241 * that are a power of two. 242 */ 243 burst = roundup_pow_of_two(act->police.burst); 244 err = mlxsw_sp_acl_rulei_act_police(mlxsw_sp, rulei, 245 act->hw_index, 246 act->police.rate_bytes_ps, 247 burst, extack); 248 if (err) 249 return err; 250 break; 251 } 252 case FLOW_ACTION_SAMPLE: { 253 if (sample_act_count++) { 254 NL_SET_ERR_MSG_MOD(extack, "Multiple sample actions per rule are not supported"); 255 return -EOPNOTSUPP; 256 } 257 258 err = mlxsw_sp_acl_rulei_act_sample(mlxsw_sp, rulei, 259 block, 260 act->sample.psample_group, 261 act->sample.rate, 262 act->sample.trunc_size, 263 act->sample.truncate, 264 extack); 265 if (err) 266 return err; 267 break; 268 } 269 default: 270 NL_SET_ERR_MSG_MOD(extack, "Unsupported action"); 271 dev_err(mlxsw_sp->bus_info->dev, "Unsupported action\n"); 272 return -EOPNOTSUPP; 273 } 274 } 275 276 if (rulei->ipv6_valid) { 277 NL_SET_ERR_MSG_MOD(extack, "Unsupported mangle field"); 278 return -EOPNOTSUPP; 279 } 280 281 return 0; 282 } 283 284 static int mlxsw_sp_flower_parse_meta(struct mlxsw_sp_acl_rule_info *rulei, 285 struct flow_cls_offload *f, 286 struct mlxsw_sp_flow_block *block) 287 { 288 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 289 struct mlxsw_sp_port *mlxsw_sp_port; 290 struct net_device *ingress_dev; 291 struct flow_match_meta match; 292 293 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_META)) 294 return 0; 295 296 flow_rule_match_meta(rule, &match); 297 298 if (match.mask->l2_miss) { 299 NL_SET_ERR_MSG_MOD(f->common.extack, "Can't match on \"l2_miss\""); 300 return -EOPNOTSUPP; 301 } 302 303 if (match.mask->ingress_ifindex != 0xFFFFFFFF) { 304 NL_SET_ERR_MSG_MOD(f->common.extack, "Unsupported ingress ifindex mask"); 305 return -EINVAL; 306 } 307 308 ingress_dev = __dev_get_by_index(block->net, 309 match.key->ingress_ifindex); 310 if (!ingress_dev) { 311 NL_SET_ERR_MSG_MOD(f->common.extack, "Can't find specified ingress port to match on"); 312 return -EINVAL; 313 } 314 315 if (!mlxsw_sp_port_dev_check(ingress_dev)) { 316 NL_SET_ERR_MSG_MOD(f->common.extack, "Can't match on non-mlxsw ingress port"); 317 return -EINVAL; 318 } 319 320 mlxsw_sp_port = netdev_priv(ingress_dev); 321 if (mlxsw_sp_port->mlxsw_sp != block->mlxsw_sp) { 322 NL_SET_ERR_MSG_MOD(f->common.extack, "Can't match on a port from different device"); 323 return -EINVAL; 324 } 325 326 mlxsw_sp_acl_rulei_keymask_u32(rulei, 327 MLXSW_AFK_ELEMENT_SRC_SYS_PORT, 328 mlxsw_sp_port->local_port, 329 0xFFFFFFFF); 330 return 0; 331 } 332 333 static void mlxsw_sp_flower_parse_ipv4(struct mlxsw_sp_acl_rule_info *rulei, 334 struct flow_cls_offload *f) 335 { 336 struct flow_match_ipv4_addrs match; 337 338 flow_rule_match_ipv4_addrs(f->rule, &match); 339 340 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31, 341 (char *) &match.key->src, 342 (char *) &match.mask->src, 4); 343 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31, 344 (char *) &match.key->dst, 345 (char *) &match.mask->dst, 4); 346 } 347 348 static void mlxsw_sp_flower_parse_ipv6(struct mlxsw_sp_acl_rule_info *rulei, 349 struct flow_cls_offload *f) 350 { 351 struct flow_match_ipv6_addrs match; 352 353 flow_rule_match_ipv6_addrs(f->rule, &match); 354 355 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_96_127, 356 &match.key->src.s6_addr[0x0], 357 &match.mask->src.s6_addr[0x0], 4); 358 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_64_95, 359 &match.key->src.s6_addr[0x4], 360 &match.mask->src.s6_addr[0x4], 4); 361 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_32_63, 362 &match.key->src.s6_addr[0x8], 363 &match.mask->src.s6_addr[0x8], 4); 364 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31, 365 &match.key->src.s6_addr[0xC], 366 &match.mask->src.s6_addr[0xC], 4); 367 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_96_127, 368 &match.key->dst.s6_addr[0x0], 369 &match.mask->dst.s6_addr[0x0], 4); 370 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_64_95, 371 &match.key->dst.s6_addr[0x4], 372 &match.mask->dst.s6_addr[0x4], 4); 373 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_32_63, 374 &match.key->dst.s6_addr[0x8], 375 &match.mask->dst.s6_addr[0x8], 4); 376 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31, 377 &match.key->dst.s6_addr[0xC], 378 &match.mask->dst.s6_addr[0xC], 4); 379 } 380 381 static int mlxsw_sp_flower_parse_ports(struct mlxsw_sp *mlxsw_sp, 382 struct mlxsw_sp_acl_rule_info *rulei, 383 struct flow_cls_offload *f, 384 u8 ip_proto) 385 { 386 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 387 struct flow_match_ports match; 388 389 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) 390 return 0; 391 392 if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) { 393 NL_SET_ERR_MSG_MOD(f->common.extack, "Only UDP and TCP keys are supported"); 394 dev_err(mlxsw_sp->bus_info->dev, "Only UDP and TCP keys are supported\n"); 395 return -EINVAL; 396 } 397 398 flow_rule_match_ports(rule, &match); 399 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_DST_L4_PORT, 400 ntohs(match.key->dst), 401 ntohs(match.mask->dst)); 402 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_SRC_L4_PORT, 403 ntohs(match.key->src), 404 ntohs(match.mask->src)); 405 return 0; 406 } 407 408 static int mlxsw_sp_flower_parse_tcp(struct mlxsw_sp *mlxsw_sp, 409 struct mlxsw_sp_acl_rule_info *rulei, 410 struct flow_cls_offload *f, 411 u8 ip_proto) 412 { 413 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 414 struct flow_match_tcp match; 415 416 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) 417 return 0; 418 419 if (ip_proto != IPPROTO_TCP) { 420 NL_SET_ERR_MSG_MOD(f->common.extack, "TCP keys supported only for TCP"); 421 dev_err(mlxsw_sp->bus_info->dev, "TCP keys supported only for TCP\n"); 422 return -EINVAL; 423 } 424 425 flow_rule_match_tcp(rule, &match); 426 427 if (match.mask->flags & htons(0x0E00)) { 428 NL_SET_ERR_MSG_MOD(f->common.extack, "TCP flags match not supported on reserved bits"); 429 dev_err(mlxsw_sp->bus_info->dev, "TCP flags match not supported on reserved bits\n"); 430 return -EINVAL; 431 } 432 433 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_TCP_FLAGS, 434 ntohs(match.key->flags), 435 ntohs(match.mask->flags)); 436 return 0; 437 } 438 439 static int mlxsw_sp_flower_parse_ip(struct mlxsw_sp *mlxsw_sp, 440 struct mlxsw_sp_acl_rule_info *rulei, 441 struct flow_cls_offload *f, 442 u16 n_proto) 443 { 444 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 445 struct flow_match_ip match; 446 447 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) 448 return 0; 449 450 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) { 451 NL_SET_ERR_MSG_MOD(f->common.extack, "IP keys supported only for IPv4/6"); 452 dev_err(mlxsw_sp->bus_info->dev, "IP keys supported only for IPv4/6\n"); 453 return -EINVAL; 454 } 455 456 flow_rule_match_ip(rule, &match); 457 458 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_TTL_, 459 match.key->ttl, match.mask->ttl); 460 461 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_ECN, 462 match.key->tos & 0x3, 463 match.mask->tos & 0x3); 464 465 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_DSCP, 466 match.key->tos >> 2, 467 match.mask->tos >> 2); 468 469 return 0; 470 } 471 472 static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp, 473 struct mlxsw_sp_flow_block *block, 474 struct mlxsw_sp_acl_rule_info *rulei, 475 struct flow_cls_offload *f) 476 { 477 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 478 struct flow_dissector *dissector = rule->match.dissector; 479 u16 n_proto_mask = 0; 480 u16 n_proto_key = 0; 481 u16 addr_type = 0; 482 u8 ip_proto = 0; 483 int err; 484 485 if (dissector->used_keys & 486 ~(BIT(FLOW_DISSECTOR_KEY_META) | 487 BIT(FLOW_DISSECTOR_KEY_CONTROL) | 488 BIT(FLOW_DISSECTOR_KEY_BASIC) | 489 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 490 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 491 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 492 BIT(FLOW_DISSECTOR_KEY_PORTS) | 493 BIT(FLOW_DISSECTOR_KEY_TCP) | 494 BIT(FLOW_DISSECTOR_KEY_IP) | 495 BIT(FLOW_DISSECTOR_KEY_VLAN))) { 496 dev_err(mlxsw_sp->bus_info->dev, "Unsupported key\n"); 497 NL_SET_ERR_MSG_MOD(f->common.extack, "Unsupported key"); 498 return -EOPNOTSUPP; 499 } 500 501 mlxsw_sp_acl_rulei_priority(rulei, f->common.prio); 502 503 err = mlxsw_sp_flower_parse_meta(rulei, f, block); 504 if (err) 505 return err; 506 507 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 508 struct flow_match_control match; 509 510 flow_rule_match_control(rule, &match); 511 addr_type = match.key->addr_type; 512 } 513 514 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 515 struct flow_match_basic match; 516 517 flow_rule_match_basic(rule, &match); 518 n_proto_key = ntohs(match.key->n_proto); 519 n_proto_mask = ntohs(match.mask->n_proto); 520 521 if (n_proto_key == ETH_P_ALL) { 522 n_proto_key = 0; 523 n_proto_mask = 0; 524 } 525 mlxsw_sp_acl_rulei_keymask_u32(rulei, 526 MLXSW_AFK_ELEMENT_ETHERTYPE, 527 n_proto_key, n_proto_mask); 528 529 ip_proto = match.key->ip_proto; 530 mlxsw_sp_acl_rulei_keymask_u32(rulei, 531 MLXSW_AFK_ELEMENT_IP_PROTO, 532 match.key->ip_proto, 533 match.mask->ip_proto); 534 } 535 536 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 537 struct flow_match_eth_addrs match; 538 539 flow_rule_match_eth_addrs(rule, &match); 540 mlxsw_sp_acl_rulei_keymask_buf(rulei, 541 MLXSW_AFK_ELEMENT_DMAC_32_47, 542 match.key->dst, 543 match.mask->dst, 2); 544 mlxsw_sp_acl_rulei_keymask_buf(rulei, 545 MLXSW_AFK_ELEMENT_DMAC_0_31, 546 match.key->dst + 2, 547 match.mask->dst + 2, 4); 548 mlxsw_sp_acl_rulei_keymask_buf(rulei, 549 MLXSW_AFK_ELEMENT_SMAC_32_47, 550 match.key->src, 551 match.mask->src, 2); 552 mlxsw_sp_acl_rulei_keymask_buf(rulei, 553 MLXSW_AFK_ELEMENT_SMAC_0_31, 554 match.key->src + 2, 555 match.mask->src + 2, 4); 556 } 557 558 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 559 struct flow_match_vlan match; 560 561 flow_rule_match_vlan(rule, &match); 562 if (mlxsw_sp_flow_block_is_egress_bound(block) && 563 match.mask->vlan_id) { 564 NL_SET_ERR_MSG_MOD(f->common.extack, "vlan_id key is not supported on egress"); 565 return -EOPNOTSUPP; 566 } 567 568 /* Forbid block with this rulei to be bound 569 * to egress in future. 570 */ 571 rulei->egress_bind_blocker = 1; 572 573 if (match.mask->vlan_id != 0) 574 mlxsw_sp_acl_rulei_keymask_u32(rulei, 575 MLXSW_AFK_ELEMENT_VID, 576 match.key->vlan_id, 577 match.mask->vlan_id); 578 if (match.mask->vlan_priority != 0) 579 mlxsw_sp_acl_rulei_keymask_u32(rulei, 580 MLXSW_AFK_ELEMENT_PCP, 581 match.key->vlan_priority, 582 match.mask->vlan_priority); 583 } 584 585 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) 586 mlxsw_sp_flower_parse_ipv4(rulei, f); 587 588 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) 589 mlxsw_sp_flower_parse_ipv6(rulei, f); 590 591 err = mlxsw_sp_flower_parse_ports(mlxsw_sp, rulei, f, ip_proto); 592 if (err) 593 return err; 594 err = mlxsw_sp_flower_parse_tcp(mlxsw_sp, rulei, f, ip_proto); 595 if (err) 596 return err; 597 598 err = mlxsw_sp_flower_parse_ip(mlxsw_sp, rulei, f, n_proto_key & n_proto_mask); 599 if (err) 600 return err; 601 602 return mlxsw_sp_flower_parse_actions(mlxsw_sp, block, rulei, 603 &f->rule->action, 604 f->common.extack); 605 } 606 607 static int mlxsw_sp_flower_mall_prio_check(struct mlxsw_sp_flow_block *block, 608 struct flow_cls_offload *f) 609 { 610 bool ingress = mlxsw_sp_flow_block_is_ingress_bound(block); 611 unsigned int mall_min_prio; 612 unsigned int mall_max_prio; 613 int err; 614 615 err = mlxsw_sp_mall_prio_get(block, f->common.chain_index, 616 &mall_min_prio, &mall_max_prio); 617 if (err) { 618 if (err == -ENOENT) 619 /* No matchall filters installed on this chain. */ 620 return 0; 621 NL_SET_ERR_MSG(f->common.extack, "Failed to get matchall priorities"); 622 return err; 623 } 624 if (ingress && f->common.prio <= mall_min_prio) { 625 NL_SET_ERR_MSG(f->common.extack, "Failed to add in front of existing matchall rules"); 626 return -EOPNOTSUPP; 627 } 628 if (!ingress && f->common.prio >= mall_max_prio) { 629 NL_SET_ERR_MSG(f->common.extack, "Failed to add behind of existing matchall rules"); 630 return -EOPNOTSUPP; 631 } 632 return 0; 633 } 634 635 int mlxsw_sp_flower_replace(struct mlxsw_sp *mlxsw_sp, 636 struct mlxsw_sp_flow_block *block, 637 struct flow_cls_offload *f) 638 { 639 struct mlxsw_sp_acl_rule_info *rulei; 640 struct mlxsw_sp_acl_ruleset *ruleset; 641 struct mlxsw_sp_acl_rule *rule; 642 int err; 643 644 err = mlxsw_sp_flower_mall_prio_check(block, f); 645 if (err) 646 return err; 647 648 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 649 f->common.chain_index, 650 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 651 if (IS_ERR(ruleset)) 652 return PTR_ERR(ruleset); 653 654 rule = mlxsw_sp_acl_rule_create(mlxsw_sp, ruleset, f->cookie, NULL, 655 f->common.extack); 656 if (IS_ERR(rule)) { 657 err = PTR_ERR(rule); 658 goto err_rule_create; 659 } 660 661 rulei = mlxsw_sp_acl_rule_rulei(rule); 662 err = mlxsw_sp_flower_parse(mlxsw_sp, block, rulei, f); 663 if (err) 664 goto err_flower_parse; 665 666 err = mlxsw_sp_acl_rulei_commit(rulei); 667 if (err) 668 goto err_rulei_commit; 669 670 err = mlxsw_sp_acl_rule_add(mlxsw_sp, rule); 671 if (err) 672 goto err_rule_add; 673 674 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 675 return 0; 676 677 err_rule_add: 678 err_rulei_commit: 679 err_flower_parse: 680 mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule); 681 err_rule_create: 682 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 683 return err; 684 } 685 686 void mlxsw_sp_flower_destroy(struct mlxsw_sp *mlxsw_sp, 687 struct mlxsw_sp_flow_block *block, 688 struct flow_cls_offload *f) 689 { 690 struct mlxsw_sp_acl_ruleset *ruleset; 691 struct mlxsw_sp_acl_rule *rule; 692 693 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 694 f->common.chain_index, 695 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 696 if (IS_ERR(ruleset)) 697 return; 698 699 rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie); 700 if (rule) { 701 mlxsw_sp_acl_rule_del(mlxsw_sp, rule); 702 mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule); 703 } 704 705 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 706 } 707 708 int mlxsw_sp_flower_stats(struct mlxsw_sp *mlxsw_sp, 709 struct mlxsw_sp_flow_block *block, 710 struct flow_cls_offload *f) 711 { 712 enum flow_action_hw_stats used_hw_stats = FLOW_ACTION_HW_STATS_DISABLED; 713 struct mlxsw_sp_acl_ruleset *ruleset; 714 struct mlxsw_sp_acl_rule *rule; 715 u64 packets; 716 u64 lastuse; 717 u64 bytes; 718 u64 drops; 719 int err; 720 721 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 722 f->common.chain_index, 723 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 724 if (WARN_ON(IS_ERR(ruleset))) 725 return -EINVAL; 726 727 rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie); 728 if (!rule) 729 return -EINVAL; 730 731 err = mlxsw_sp_acl_rule_get_stats(mlxsw_sp, rule, &packets, &bytes, 732 &drops, &lastuse, &used_hw_stats); 733 if (err) 734 goto err_rule_get_stats; 735 736 flow_stats_update(&f->stats, bytes, packets, drops, lastuse, 737 used_hw_stats); 738 739 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 740 return 0; 741 742 err_rule_get_stats: 743 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 744 return err; 745 } 746 747 int mlxsw_sp_flower_tmplt_create(struct mlxsw_sp *mlxsw_sp, 748 struct mlxsw_sp_flow_block *block, 749 struct flow_cls_offload *f) 750 { 751 struct mlxsw_sp_acl_ruleset *ruleset; 752 struct mlxsw_sp_acl_rule_info rulei; 753 int err; 754 755 memset(&rulei, 0, sizeof(rulei)); 756 err = mlxsw_sp_flower_parse(mlxsw_sp, block, &rulei, f); 757 if (err) 758 return err; 759 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 760 f->common.chain_index, 761 MLXSW_SP_ACL_PROFILE_FLOWER, 762 &rulei.values.elusage); 763 764 /* keep the reference to the ruleset */ 765 return PTR_ERR_OR_ZERO(ruleset); 766 } 767 768 void mlxsw_sp_flower_tmplt_destroy(struct mlxsw_sp *mlxsw_sp, 769 struct mlxsw_sp_flow_block *block, 770 struct flow_cls_offload *f) 771 { 772 struct mlxsw_sp_acl_ruleset *ruleset; 773 774 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 775 f->common.chain_index, 776 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 777 if (IS_ERR(ruleset)) 778 return; 779 /* put the reference to the ruleset kept in create */ 780 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 781 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 782 } 783 784 int mlxsw_sp_flower_prio_get(struct mlxsw_sp *mlxsw_sp, 785 struct mlxsw_sp_flow_block *block, 786 u32 chain_index, unsigned int *p_min_prio, 787 unsigned int *p_max_prio) 788 { 789 struct mlxsw_sp_acl_ruleset *ruleset; 790 791 ruleset = mlxsw_sp_acl_ruleset_lookup(mlxsw_sp, block, 792 chain_index, 793 MLXSW_SP_ACL_PROFILE_FLOWER); 794 if (IS_ERR(ruleset)) 795 /* In case there are no flower rules, the caller 796 * receives -ENOENT to indicate there is no need 797 * to check the priorities. 798 */ 799 return PTR_ERR(ruleset); 800 mlxsw_sp_acl_ruleset_prio_get(ruleset, p_min_prio, p_max_prio); 801 return 0; 802 } 803