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 /* Ignore learning and security lookup as redirection 164 * using ingress filters happens before the bridge. 165 */ 166 err = mlxsw_sp_acl_rulei_act_ignore(mlxsw_sp, rulei, 167 true, true); 168 if (err) { 169 NL_SET_ERR_MSG_MOD(extack, "Cannot append ignore action"); 170 return err; 171 } 172 173 fid = mlxsw_sp_acl_dummy_fid(mlxsw_sp); 174 fid_index = mlxsw_sp_fid_index(fid); 175 err = mlxsw_sp_acl_rulei_act_fid_set(mlxsw_sp, rulei, 176 fid_index, extack); 177 if (err) 178 return err; 179 180 out_dev = act->dev; 181 err = mlxsw_sp_acl_rulei_act_fwd(mlxsw_sp, rulei, 182 out_dev, extack); 183 if (err) 184 return err; 185 } 186 break; 187 case FLOW_ACTION_MIRRED: { 188 struct net_device *out_dev = act->dev; 189 190 if (mirror_act_count++) { 191 NL_SET_ERR_MSG_MOD(extack, "Multiple mirror actions per rule are not supported"); 192 return -EOPNOTSUPP; 193 } 194 195 err = mlxsw_sp_acl_rulei_act_mirror(mlxsw_sp, rulei, 196 block, out_dev, 197 extack); 198 if (err) 199 return err; 200 } 201 break; 202 case FLOW_ACTION_VLAN_MANGLE: { 203 u16 proto = be16_to_cpu(act->vlan.proto); 204 u8 prio = act->vlan.prio; 205 u16 vid = act->vlan.vid; 206 207 err = mlxsw_sp_acl_rulei_act_vlan(mlxsw_sp, rulei, 208 act->id, vid, 209 proto, prio, extack); 210 if (err) 211 return err; 212 break; 213 } 214 case FLOW_ACTION_PRIORITY: 215 err = mlxsw_sp_acl_rulei_act_priority(mlxsw_sp, rulei, 216 act->priority, 217 extack); 218 if (err) 219 return err; 220 break; 221 case FLOW_ACTION_MANGLE: { 222 enum flow_action_mangle_base htype = act->mangle.htype; 223 __be32 be_mask = (__force __be32) act->mangle.mask; 224 __be32 be_val = (__force __be32) act->mangle.val; 225 u32 offset = act->mangle.offset; 226 u32 mask = be32_to_cpu(be_mask); 227 u32 val = be32_to_cpu(be_val); 228 229 err = mlxsw_sp_acl_rulei_act_mangle(mlxsw_sp, rulei, 230 htype, offset, 231 mask, val, extack); 232 if (err) 233 return err; 234 break; 235 } 236 case FLOW_ACTION_POLICE: { 237 u32 burst; 238 239 if (police_act_count++) { 240 NL_SET_ERR_MSG_MOD(extack, "Multiple police actions per rule are not supported"); 241 return -EOPNOTSUPP; 242 } 243 244 err = mlxsw_sp_policer_validate(flow_action, act, extack); 245 if (err) 246 return err; 247 248 /* The kernel might adjust the requested burst size so 249 * that it is not exactly a power of two. Re-adjust it 250 * here since the hardware only supports burst sizes 251 * that are a power of two. 252 */ 253 burst = roundup_pow_of_two(act->police.burst); 254 err = mlxsw_sp_acl_rulei_act_police(mlxsw_sp, rulei, 255 act->hw_index, 256 act->police.rate_bytes_ps, 257 burst, extack); 258 if (err) 259 return err; 260 break; 261 } 262 case FLOW_ACTION_SAMPLE: { 263 if (sample_act_count++) { 264 NL_SET_ERR_MSG_MOD(extack, "Multiple sample actions per rule are not supported"); 265 return -EOPNOTSUPP; 266 } 267 268 err = mlxsw_sp_acl_rulei_act_sample(mlxsw_sp, rulei, 269 block, 270 act->sample.psample_group, 271 act->sample.rate, 272 act->sample.trunc_size, 273 act->sample.truncate, 274 extack); 275 if (err) 276 return err; 277 break; 278 } 279 default: 280 NL_SET_ERR_MSG_MOD(extack, "Unsupported action"); 281 dev_err(mlxsw_sp->bus_info->dev, "Unsupported action\n"); 282 return -EOPNOTSUPP; 283 } 284 } 285 286 if (rulei->ipv6_valid) { 287 NL_SET_ERR_MSG_MOD(extack, "Unsupported mangle field"); 288 return -EOPNOTSUPP; 289 } 290 291 return 0; 292 } 293 294 static int 295 mlxsw_sp_flower_parse_meta_iif(struct mlxsw_sp_acl_rule_info *rulei, 296 const struct mlxsw_sp_flow_block *block, 297 const struct flow_match_meta *match, 298 struct netlink_ext_ack *extack) 299 { 300 struct mlxsw_sp_port *mlxsw_sp_port; 301 struct net_device *ingress_dev; 302 303 if (!match->mask->ingress_ifindex) 304 return 0; 305 306 if (match->mask->ingress_ifindex != 0xFFFFFFFF) { 307 NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask"); 308 return -EINVAL; 309 } 310 311 ingress_dev = __dev_get_by_index(block->net, 312 match->key->ingress_ifindex); 313 if (!ingress_dev) { 314 NL_SET_ERR_MSG_MOD(extack, "Can't find specified ingress port to match on"); 315 return -EINVAL; 316 } 317 318 if (!mlxsw_sp_port_dev_check(ingress_dev)) { 319 NL_SET_ERR_MSG_MOD(extack, "Can't match on non-mlxsw ingress port"); 320 return -EINVAL; 321 } 322 323 mlxsw_sp_port = netdev_priv(ingress_dev); 324 if (mlxsw_sp_port->mlxsw_sp != block->mlxsw_sp) { 325 NL_SET_ERR_MSG_MOD(extack, "Can't match on a port from different device"); 326 return -EINVAL; 327 } 328 329 mlxsw_sp_acl_rulei_keymask_u32(rulei, 330 MLXSW_AFK_ELEMENT_SRC_SYS_PORT, 331 mlxsw_sp_port->local_port, 332 0xFFFFFFFF); 333 334 return 0; 335 } 336 337 static int mlxsw_sp_flower_parse_meta(struct mlxsw_sp_acl_rule_info *rulei, 338 struct flow_cls_offload *f, 339 struct mlxsw_sp_flow_block *block) 340 { 341 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 342 struct flow_match_meta match; 343 344 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_META)) 345 return 0; 346 347 flow_rule_match_meta(rule, &match); 348 349 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_FDB_MISS, 350 match.key->l2_miss, match.mask->l2_miss); 351 352 return mlxsw_sp_flower_parse_meta_iif(rulei, block, &match, 353 f->common.extack); 354 } 355 356 static void mlxsw_sp_flower_parse_ipv4(struct mlxsw_sp_acl_rule_info *rulei, 357 struct flow_cls_offload *f) 358 { 359 struct flow_match_ipv4_addrs match; 360 361 flow_rule_match_ipv4_addrs(f->rule, &match); 362 363 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31, 364 (char *) &match.key->src, 365 (char *) &match.mask->src, 4); 366 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31, 367 (char *) &match.key->dst, 368 (char *) &match.mask->dst, 4); 369 } 370 371 static void mlxsw_sp_flower_parse_ipv6(struct mlxsw_sp_acl_rule_info *rulei, 372 struct flow_cls_offload *f) 373 { 374 struct flow_match_ipv6_addrs match; 375 376 flow_rule_match_ipv6_addrs(f->rule, &match); 377 378 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_96_127, 379 &match.key->src.s6_addr[0x0], 380 &match.mask->src.s6_addr[0x0], 4); 381 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_64_95, 382 &match.key->src.s6_addr[0x4], 383 &match.mask->src.s6_addr[0x4], 4); 384 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_32_63, 385 &match.key->src.s6_addr[0x8], 386 &match.mask->src.s6_addr[0x8], 4); 387 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31, 388 &match.key->src.s6_addr[0xC], 389 &match.mask->src.s6_addr[0xC], 4); 390 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_96_127, 391 &match.key->dst.s6_addr[0x0], 392 &match.mask->dst.s6_addr[0x0], 4); 393 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_64_95, 394 &match.key->dst.s6_addr[0x4], 395 &match.mask->dst.s6_addr[0x4], 4); 396 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_32_63, 397 &match.key->dst.s6_addr[0x8], 398 &match.mask->dst.s6_addr[0x8], 4); 399 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31, 400 &match.key->dst.s6_addr[0xC], 401 &match.mask->dst.s6_addr[0xC], 4); 402 } 403 404 static int mlxsw_sp_flower_parse_ports(struct mlxsw_sp *mlxsw_sp, 405 struct mlxsw_sp_acl_rule_info *rulei, 406 struct flow_cls_offload *f, 407 u8 ip_proto) 408 { 409 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 410 struct flow_match_ports match; 411 412 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) 413 return 0; 414 415 if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) { 416 NL_SET_ERR_MSG_MOD(f->common.extack, "Only UDP and TCP keys are supported"); 417 dev_err(mlxsw_sp->bus_info->dev, "Only UDP and TCP keys are supported\n"); 418 return -EINVAL; 419 } 420 421 flow_rule_match_ports(rule, &match); 422 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_DST_L4_PORT, 423 ntohs(match.key->dst), 424 ntohs(match.mask->dst)); 425 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_SRC_L4_PORT, 426 ntohs(match.key->src), 427 ntohs(match.mask->src)); 428 return 0; 429 } 430 431 static int 432 mlxsw_sp_flower_parse_ports_range(struct mlxsw_sp *mlxsw_sp, 433 struct mlxsw_sp_acl_rule_info *rulei, 434 struct flow_cls_offload *f, u8 ip_proto) 435 { 436 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 437 struct flow_match_ports_range match; 438 u32 key_mask_value = 0; 439 440 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS_RANGE)) 441 return 0; 442 443 if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) { 444 NL_SET_ERR_MSG_MOD(f->common.extack, "Only UDP and TCP keys are supported"); 445 return -EINVAL; 446 } 447 448 flow_rule_match_ports_range(rule, &match); 449 450 if (match.mask->tp_min.src) { 451 struct mlxsw_sp_port_range range = { 452 .min = ntohs(match.key->tp_min.src), 453 .max = ntohs(match.key->tp_max.src), 454 .source = true, 455 }; 456 u8 prr_index; 457 int err; 458 459 err = mlxsw_sp_port_range_reg_get(mlxsw_sp, &range, 460 f->common.extack, &prr_index); 461 if (err) 462 return err; 463 464 rulei->src_port_range_reg_index = prr_index; 465 rulei->src_port_range_reg_valid = true; 466 key_mask_value |= BIT(prr_index); 467 } 468 469 if (match.mask->tp_min.dst) { 470 struct mlxsw_sp_port_range range = { 471 .min = ntohs(match.key->tp_min.dst), 472 .max = ntohs(match.key->tp_max.dst), 473 }; 474 u8 prr_index; 475 int err; 476 477 err = mlxsw_sp_port_range_reg_get(mlxsw_sp, &range, 478 f->common.extack, &prr_index); 479 if (err) 480 return err; 481 482 rulei->dst_port_range_reg_index = prr_index; 483 rulei->dst_port_range_reg_valid = true; 484 key_mask_value |= BIT(prr_index); 485 } 486 487 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_L4_PORT_RANGE, 488 key_mask_value, key_mask_value); 489 490 return 0; 491 } 492 493 static int mlxsw_sp_flower_parse_tcp(struct mlxsw_sp *mlxsw_sp, 494 struct mlxsw_sp_acl_rule_info *rulei, 495 struct flow_cls_offload *f, 496 u8 ip_proto) 497 { 498 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 499 struct flow_match_tcp match; 500 501 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) 502 return 0; 503 504 if (ip_proto != IPPROTO_TCP) { 505 NL_SET_ERR_MSG_MOD(f->common.extack, "TCP keys supported only for TCP"); 506 dev_err(mlxsw_sp->bus_info->dev, "TCP keys supported only for TCP\n"); 507 return -EINVAL; 508 } 509 510 flow_rule_match_tcp(rule, &match); 511 512 if (match.mask->flags & htons(0x0E00)) { 513 NL_SET_ERR_MSG_MOD(f->common.extack, "TCP flags match not supported on reserved bits"); 514 dev_err(mlxsw_sp->bus_info->dev, "TCP flags match not supported on reserved bits\n"); 515 return -EINVAL; 516 } 517 518 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_TCP_FLAGS, 519 ntohs(match.key->flags), 520 ntohs(match.mask->flags)); 521 return 0; 522 } 523 524 static int mlxsw_sp_flower_parse_ip(struct mlxsw_sp *mlxsw_sp, 525 struct mlxsw_sp_acl_rule_info *rulei, 526 struct flow_cls_offload *f, 527 u16 n_proto) 528 { 529 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 530 struct flow_match_ip match; 531 532 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) 533 return 0; 534 535 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) { 536 NL_SET_ERR_MSG_MOD(f->common.extack, "IP keys supported only for IPv4/6"); 537 dev_err(mlxsw_sp->bus_info->dev, "IP keys supported only for IPv4/6\n"); 538 return -EINVAL; 539 } 540 541 flow_rule_match_ip(rule, &match); 542 543 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_TTL_, 544 match.key->ttl, match.mask->ttl); 545 546 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_ECN, 547 match.key->tos & 0x3, 548 match.mask->tos & 0x3); 549 550 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_DSCP, 551 match.key->tos >> 2, 552 match.mask->tos >> 2); 553 554 return 0; 555 } 556 557 static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp, 558 struct mlxsw_sp_flow_block *block, 559 struct mlxsw_sp_acl_rule_info *rulei, 560 struct flow_cls_offload *f) 561 { 562 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 563 struct flow_dissector *dissector = rule->match.dissector; 564 u16 n_proto_mask = 0; 565 u16 n_proto_key = 0; 566 u16 addr_type = 0; 567 u8 ip_proto = 0; 568 int err; 569 570 if (dissector->used_keys & 571 ~(BIT_ULL(FLOW_DISSECTOR_KEY_META) | 572 BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) | 573 BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) | 574 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 575 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 576 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 577 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) | 578 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS_RANGE) | 579 BIT_ULL(FLOW_DISSECTOR_KEY_TCP) | 580 BIT_ULL(FLOW_DISSECTOR_KEY_IP) | 581 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN))) { 582 dev_err(mlxsw_sp->bus_info->dev, "Unsupported key\n"); 583 NL_SET_ERR_MSG_MOD(f->common.extack, "Unsupported key"); 584 return -EOPNOTSUPP; 585 } 586 587 mlxsw_sp_acl_rulei_priority(rulei, f->common.prio); 588 589 err = mlxsw_sp_flower_parse_meta(rulei, f, block); 590 if (err) 591 return err; 592 593 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 594 struct flow_match_control match; 595 596 flow_rule_match_control(rule, &match); 597 addr_type = match.key->addr_type; 598 } 599 600 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 601 struct flow_match_basic match; 602 603 flow_rule_match_basic(rule, &match); 604 n_proto_key = ntohs(match.key->n_proto); 605 n_proto_mask = ntohs(match.mask->n_proto); 606 607 if (n_proto_key == ETH_P_ALL) { 608 n_proto_key = 0; 609 n_proto_mask = 0; 610 } 611 mlxsw_sp_acl_rulei_keymask_u32(rulei, 612 MLXSW_AFK_ELEMENT_ETHERTYPE, 613 n_proto_key, n_proto_mask); 614 615 ip_proto = match.key->ip_proto; 616 mlxsw_sp_acl_rulei_keymask_u32(rulei, 617 MLXSW_AFK_ELEMENT_IP_PROTO, 618 match.key->ip_proto, 619 match.mask->ip_proto); 620 } 621 622 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 623 struct flow_match_eth_addrs match; 624 625 flow_rule_match_eth_addrs(rule, &match); 626 mlxsw_sp_acl_rulei_keymask_buf(rulei, 627 MLXSW_AFK_ELEMENT_DMAC_32_47, 628 match.key->dst, 629 match.mask->dst, 2); 630 mlxsw_sp_acl_rulei_keymask_buf(rulei, 631 MLXSW_AFK_ELEMENT_DMAC_0_31, 632 match.key->dst + 2, 633 match.mask->dst + 2, 4); 634 mlxsw_sp_acl_rulei_keymask_buf(rulei, 635 MLXSW_AFK_ELEMENT_SMAC_32_47, 636 match.key->src, 637 match.mask->src, 2); 638 mlxsw_sp_acl_rulei_keymask_buf(rulei, 639 MLXSW_AFK_ELEMENT_SMAC_0_31, 640 match.key->src + 2, 641 match.mask->src + 2, 4); 642 } 643 644 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 645 struct flow_match_vlan match; 646 647 flow_rule_match_vlan(rule, &match); 648 if (mlxsw_sp_flow_block_is_egress_bound(block) && 649 match.mask->vlan_id) { 650 NL_SET_ERR_MSG_MOD(f->common.extack, "vlan_id key is not supported on egress"); 651 return -EOPNOTSUPP; 652 } 653 654 /* Forbid block with this rulei to be bound 655 * to egress in future. 656 */ 657 rulei->egress_bind_blocker = 1; 658 659 if (match.mask->vlan_id != 0) 660 mlxsw_sp_acl_rulei_keymask_u32(rulei, 661 MLXSW_AFK_ELEMENT_VID, 662 match.key->vlan_id, 663 match.mask->vlan_id); 664 if (match.mask->vlan_priority != 0) 665 mlxsw_sp_acl_rulei_keymask_u32(rulei, 666 MLXSW_AFK_ELEMENT_PCP, 667 match.key->vlan_priority, 668 match.mask->vlan_priority); 669 } 670 671 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) 672 mlxsw_sp_flower_parse_ipv4(rulei, f); 673 674 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) 675 mlxsw_sp_flower_parse_ipv6(rulei, f); 676 677 err = mlxsw_sp_flower_parse_ports(mlxsw_sp, rulei, f, ip_proto); 678 if (err) 679 return err; 680 681 err = mlxsw_sp_flower_parse_ports_range(mlxsw_sp, rulei, f, ip_proto); 682 if (err) 683 return err; 684 685 err = mlxsw_sp_flower_parse_tcp(mlxsw_sp, rulei, f, ip_proto); 686 if (err) 687 return err; 688 689 err = mlxsw_sp_flower_parse_ip(mlxsw_sp, rulei, f, n_proto_key & n_proto_mask); 690 if (err) 691 return err; 692 693 return mlxsw_sp_flower_parse_actions(mlxsw_sp, block, rulei, 694 &f->rule->action, 695 f->common.extack); 696 } 697 698 static int mlxsw_sp_flower_mall_prio_check(struct mlxsw_sp_flow_block *block, 699 struct flow_cls_offload *f) 700 { 701 bool ingress = mlxsw_sp_flow_block_is_ingress_bound(block); 702 unsigned int mall_min_prio; 703 unsigned int mall_max_prio; 704 int err; 705 706 err = mlxsw_sp_mall_prio_get(block, f->common.chain_index, 707 &mall_min_prio, &mall_max_prio); 708 if (err) { 709 if (err == -ENOENT) 710 /* No matchall filters installed on this chain. */ 711 return 0; 712 NL_SET_ERR_MSG(f->common.extack, "Failed to get matchall priorities"); 713 return err; 714 } 715 if (ingress && f->common.prio <= mall_min_prio) { 716 NL_SET_ERR_MSG(f->common.extack, "Failed to add in front of existing matchall rules"); 717 return -EOPNOTSUPP; 718 } 719 if (!ingress && f->common.prio >= mall_max_prio) { 720 NL_SET_ERR_MSG(f->common.extack, "Failed to add behind of existing matchall rules"); 721 return -EOPNOTSUPP; 722 } 723 return 0; 724 } 725 726 int mlxsw_sp_flower_replace(struct mlxsw_sp *mlxsw_sp, 727 struct mlxsw_sp_flow_block *block, 728 struct flow_cls_offload *f) 729 { 730 struct mlxsw_sp_acl_rule_info *rulei; 731 struct mlxsw_sp_acl_ruleset *ruleset; 732 struct mlxsw_sp_acl_rule *rule; 733 int err; 734 735 err = mlxsw_sp_flower_mall_prio_check(block, f); 736 if (err) 737 return err; 738 739 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 740 f->common.chain_index, 741 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 742 if (IS_ERR(ruleset)) 743 return PTR_ERR(ruleset); 744 745 rule = mlxsw_sp_acl_rule_create(mlxsw_sp, ruleset, f->cookie, NULL, 746 f->common.extack); 747 if (IS_ERR(rule)) { 748 err = PTR_ERR(rule); 749 goto err_rule_create; 750 } 751 752 rulei = mlxsw_sp_acl_rule_rulei(rule); 753 err = mlxsw_sp_flower_parse(mlxsw_sp, block, rulei, f); 754 if (err) 755 goto err_flower_parse; 756 757 err = mlxsw_sp_acl_rulei_commit(rulei); 758 if (err) 759 goto err_rulei_commit; 760 761 err = mlxsw_sp_acl_rule_add(mlxsw_sp, rule); 762 if (err) 763 goto err_rule_add; 764 765 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 766 return 0; 767 768 err_rule_add: 769 err_rulei_commit: 770 err_flower_parse: 771 mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule); 772 err_rule_create: 773 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 774 return err; 775 } 776 777 void mlxsw_sp_flower_destroy(struct mlxsw_sp *mlxsw_sp, 778 struct mlxsw_sp_flow_block *block, 779 struct flow_cls_offload *f) 780 { 781 struct mlxsw_sp_acl_ruleset *ruleset; 782 struct mlxsw_sp_acl_rule *rule; 783 784 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 785 f->common.chain_index, 786 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 787 if (IS_ERR(ruleset)) 788 return; 789 790 rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie); 791 if (rule) { 792 mlxsw_sp_acl_rule_del(mlxsw_sp, rule); 793 mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule); 794 } 795 796 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 797 } 798 799 int mlxsw_sp_flower_stats(struct mlxsw_sp *mlxsw_sp, 800 struct mlxsw_sp_flow_block *block, 801 struct flow_cls_offload *f) 802 { 803 enum flow_action_hw_stats used_hw_stats = FLOW_ACTION_HW_STATS_DISABLED; 804 struct mlxsw_sp_acl_ruleset *ruleset; 805 struct mlxsw_sp_acl_rule *rule; 806 u64 packets; 807 u64 lastuse; 808 u64 bytes; 809 u64 drops; 810 int err; 811 812 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 813 f->common.chain_index, 814 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 815 if (WARN_ON(IS_ERR(ruleset))) 816 return -EINVAL; 817 818 rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie); 819 if (!rule) 820 return -EINVAL; 821 822 err = mlxsw_sp_acl_rule_get_stats(mlxsw_sp, rule, &packets, &bytes, 823 &drops, &lastuse, &used_hw_stats); 824 if (err) 825 goto err_rule_get_stats; 826 827 flow_stats_update(&f->stats, bytes, packets, drops, lastuse, 828 used_hw_stats); 829 830 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 831 return 0; 832 833 err_rule_get_stats: 834 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 835 return err; 836 } 837 838 int mlxsw_sp_flower_tmplt_create(struct mlxsw_sp *mlxsw_sp, 839 struct mlxsw_sp_flow_block *block, 840 struct flow_cls_offload *f) 841 { 842 struct mlxsw_sp_acl_ruleset *ruleset; 843 struct mlxsw_sp_acl_rule_info rulei; 844 int err; 845 846 memset(&rulei, 0, sizeof(rulei)); 847 err = mlxsw_sp_flower_parse(mlxsw_sp, block, &rulei, f); 848 if (err) 849 return err; 850 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 851 f->common.chain_index, 852 MLXSW_SP_ACL_PROFILE_FLOWER, 853 &rulei.values.elusage); 854 855 /* keep the reference to the ruleset */ 856 return PTR_ERR_OR_ZERO(ruleset); 857 } 858 859 void mlxsw_sp_flower_tmplt_destroy(struct mlxsw_sp *mlxsw_sp, 860 struct mlxsw_sp_flow_block *block, 861 struct flow_cls_offload *f) 862 { 863 struct mlxsw_sp_acl_ruleset *ruleset; 864 865 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 866 f->common.chain_index, 867 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 868 if (IS_ERR(ruleset)) 869 return; 870 /* put the reference to the ruleset kept in create */ 871 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 872 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 873 } 874 875 int mlxsw_sp_flower_prio_get(struct mlxsw_sp *mlxsw_sp, 876 struct mlxsw_sp_flow_block *block, 877 u32 chain_index, unsigned int *p_min_prio, 878 unsigned int *p_max_prio) 879 { 880 struct mlxsw_sp_acl_ruleset *ruleset; 881 882 ruleset = mlxsw_sp_acl_ruleset_lookup(mlxsw_sp, block, 883 chain_index, 884 MLXSW_SP_ACL_PROFILE_FLOWER); 885 if (IS_ERR(ruleset)) 886 /* In case there are no flower rules, the caller 887 * receives -ENOENT to indicate there is no need 888 * to check the priorities. 889 */ 890 return PTR_ERR(ruleset); 891 mlxsw_sp_acl_ruleset_prio_get(ruleset, p_min_prio, p_max_prio); 892 return 0; 893 } 894