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 if (match.mask->ingress_ifindex != 0xFFFFFFFF) { 298 NL_SET_ERR_MSG_MOD(f->common.extack, "Unsupported ingress ifindex mask"); 299 return -EINVAL; 300 } 301 302 ingress_dev = __dev_get_by_index(block->net, 303 match.key->ingress_ifindex); 304 if (!ingress_dev) { 305 NL_SET_ERR_MSG_MOD(f->common.extack, "Can't find specified ingress port to match on"); 306 return -EINVAL; 307 } 308 309 if (!mlxsw_sp_port_dev_check(ingress_dev)) { 310 NL_SET_ERR_MSG_MOD(f->common.extack, "Can't match on non-mlxsw ingress port"); 311 return -EINVAL; 312 } 313 314 mlxsw_sp_port = netdev_priv(ingress_dev); 315 if (mlxsw_sp_port->mlxsw_sp != block->mlxsw_sp) { 316 NL_SET_ERR_MSG_MOD(f->common.extack, "Can't match on a port from different device"); 317 return -EINVAL; 318 } 319 320 mlxsw_sp_acl_rulei_keymask_u32(rulei, 321 MLXSW_AFK_ELEMENT_SRC_SYS_PORT, 322 mlxsw_sp_port->local_port, 323 0xFFFFFFFF); 324 return 0; 325 } 326 327 static void mlxsw_sp_flower_parse_ipv4(struct mlxsw_sp_acl_rule_info *rulei, 328 struct flow_cls_offload *f) 329 { 330 struct flow_match_ipv4_addrs match; 331 332 flow_rule_match_ipv4_addrs(f->rule, &match); 333 334 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31, 335 (char *) &match.key->src, 336 (char *) &match.mask->src, 4); 337 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31, 338 (char *) &match.key->dst, 339 (char *) &match.mask->dst, 4); 340 } 341 342 static void mlxsw_sp_flower_parse_ipv6(struct mlxsw_sp_acl_rule_info *rulei, 343 struct flow_cls_offload *f) 344 { 345 struct flow_match_ipv6_addrs match; 346 347 flow_rule_match_ipv6_addrs(f->rule, &match); 348 349 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_96_127, 350 &match.key->src.s6_addr[0x0], 351 &match.mask->src.s6_addr[0x0], 4); 352 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_64_95, 353 &match.key->src.s6_addr[0x4], 354 &match.mask->src.s6_addr[0x4], 4); 355 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_32_63, 356 &match.key->src.s6_addr[0x8], 357 &match.mask->src.s6_addr[0x8], 4); 358 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31, 359 &match.key->src.s6_addr[0xC], 360 &match.mask->src.s6_addr[0xC], 4); 361 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_96_127, 362 &match.key->dst.s6_addr[0x0], 363 &match.mask->dst.s6_addr[0x0], 4); 364 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_64_95, 365 &match.key->dst.s6_addr[0x4], 366 &match.mask->dst.s6_addr[0x4], 4); 367 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_32_63, 368 &match.key->dst.s6_addr[0x8], 369 &match.mask->dst.s6_addr[0x8], 4); 370 mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31, 371 &match.key->dst.s6_addr[0xC], 372 &match.mask->dst.s6_addr[0xC], 4); 373 } 374 375 static int mlxsw_sp_flower_parse_ports(struct mlxsw_sp *mlxsw_sp, 376 struct mlxsw_sp_acl_rule_info *rulei, 377 struct flow_cls_offload *f, 378 u8 ip_proto) 379 { 380 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 381 struct flow_match_ports match; 382 383 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) 384 return 0; 385 386 if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) { 387 NL_SET_ERR_MSG_MOD(f->common.extack, "Only UDP and TCP keys are supported"); 388 dev_err(mlxsw_sp->bus_info->dev, "Only UDP and TCP keys are supported\n"); 389 return -EINVAL; 390 } 391 392 flow_rule_match_ports(rule, &match); 393 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_DST_L4_PORT, 394 ntohs(match.key->dst), 395 ntohs(match.mask->dst)); 396 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_SRC_L4_PORT, 397 ntohs(match.key->src), 398 ntohs(match.mask->src)); 399 return 0; 400 } 401 402 static int mlxsw_sp_flower_parse_tcp(struct mlxsw_sp *mlxsw_sp, 403 struct mlxsw_sp_acl_rule_info *rulei, 404 struct flow_cls_offload *f, 405 u8 ip_proto) 406 { 407 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 408 struct flow_match_tcp match; 409 410 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) 411 return 0; 412 413 if (ip_proto != IPPROTO_TCP) { 414 NL_SET_ERR_MSG_MOD(f->common.extack, "TCP keys supported only for TCP"); 415 dev_err(mlxsw_sp->bus_info->dev, "TCP keys supported only for TCP\n"); 416 return -EINVAL; 417 } 418 419 flow_rule_match_tcp(rule, &match); 420 421 if (match.mask->flags & htons(0x0E00)) { 422 NL_SET_ERR_MSG_MOD(f->common.extack, "TCP flags match not supported on reserved bits"); 423 dev_err(mlxsw_sp->bus_info->dev, "TCP flags match not supported on reserved bits\n"); 424 return -EINVAL; 425 } 426 427 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_TCP_FLAGS, 428 ntohs(match.key->flags), 429 ntohs(match.mask->flags)); 430 return 0; 431 } 432 433 static int mlxsw_sp_flower_parse_ip(struct mlxsw_sp *mlxsw_sp, 434 struct mlxsw_sp_acl_rule_info *rulei, 435 struct flow_cls_offload *f, 436 u16 n_proto) 437 { 438 const struct flow_rule *rule = flow_cls_offload_flow_rule(f); 439 struct flow_match_ip match; 440 441 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) 442 return 0; 443 444 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) { 445 NL_SET_ERR_MSG_MOD(f->common.extack, "IP keys supported only for IPv4/6"); 446 dev_err(mlxsw_sp->bus_info->dev, "IP keys supported only for IPv4/6\n"); 447 return -EINVAL; 448 } 449 450 flow_rule_match_ip(rule, &match); 451 452 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_TTL_, 453 match.key->ttl, match.mask->ttl); 454 455 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_ECN, 456 match.key->tos & 0x3, 457 match.mask->tos & 0x3); 458 459 mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_DSCP, 460 match.key->tos >> 2, 461 match.mask->tos >> 2); 462 463 return 0; 464 } 465 466 static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp, 467 struct mlxsw_sp_flow_block *block, 468 struct mlxsw_sp_acl_rule_info *rulei, 469 struct flow_cls_offload *f) 470 { 471 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 472 struct flow_dissector *dissector = rule->match.dissector; 473 u16 n_proto_mask = 0; 474 u16 n_proto_key = 0; 475 u16 addr_type = 0; 476 u8 ip_proto = 0; 477 int err; 478 479 if (dissector->used_keys & 480 ~(BIT(FLOW_DISSECTOR_KEY_META) | 481 BIT(FLOW_DISSECTOR_KEY_CONTROL) | 482 BIT(FLOW_DISSECTOR_KEY_BASIC) | 483 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 484 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 485 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 486 BIT(FLOW_DISSECTOR_KEY_PORTS) | 487 BIT(FLOW_DISSECTOR_KEY_TCP) | 488 BIT(FLOW_DISSECTOR_KEY_IP) | 489 BIT(FLOW_DISSECTOR_KEY_VLAN))) { 490 dev_err(mlxsw_sp->bus_info->dev, "Unsupported key\n"); 491 NL_SET_ERR_MSG_MOD(f->common.extack, "Unsupported key"); 492 return -EOPNOTSUPP; 493 } 494 495 mlxsw_sp_acl_rulei_priority(rulei, f->common.prio); 496 497 err = mlxsw_sp_flower_parse_meta(rulei, f, block); 498 if (err) 499 return err; 500 501 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 502 struct flow_match_control match; 503 504 flow_rule_match_control(rule, &match); 505 addr_type = match.key->addr_type; 506 } 507 508 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 509 struct flow_match_basic match; 510 511 flow_rule_match_basic(rule, &match); 512 n_proto_key = ntohs(match.key->n_proto); 513 n_proto_mask = ntohs(match.mask->n_proto); 514 515 if (n_proto_key == ETH_P_ALL) { 516 n_proto_key = 0; 517 n_proto_mask = 0; 518 } 519 mlxsw_sp_acl_rulei_keymask_u32(rulei, 520 MLXSW_AFK_ELEMENT_ETHERTYPE, 521 n_proto_key, n_proto_mask); 522 523 ip_proto = match.key->ip_proto; 524 mlxsw_sp_acl_rulei_keymask_u32(rulei, 525 MLXSW_AFK_ELEMENT_IP_PROTO, 526 match.key->ip_proto, 527 match.mask->ip_proto); 528 } 529 530 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 531 struct flow_match_eth_addrs match; 532 533 flow_rule_match_eth_addrs(rule, &match); 534 mlxsw_sp_acl_rulei_keymask_buf(rulei, 535 MLXSW_AFK_ELEMENT_DMAC_32_47, 536 match.key->dst, 537 match.mask->dst, 2); 538 mlxsw_sp_acl_rulei_keymask_buf(rulei, 539 MLXSW_AFK_ELEMENT_DMAC_0_31, 540 match.key->dst + 2, 541 match.mask->dst + 2, 4); 542 mlxsw_sp_acl_rulei_keymask_buf(rulei, 543 MLXSW_AFK_ELEMENT_SMAC_32_47, 544 match.key->src, 545 match.mask->src, 2); 546 mlxsw_sp_acl_rulei_keymask_buf(rulei, 547 MLXSW_AFK_ELEMENT_SMAC_0_31, 548 match.key->src + 2, 549 match.mask->src + 2, 4); 550 } 551 552 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 553 struct flow_match_vlan match; 554 555 flow_rule_match_vlan(rule, &match); 556 if (mlxsw_sp_flow_block_is_egress_bound(block) && 557 match.mask->vlan_id) { 558 NL_SET_ERR_MSG_MOD(f->common.extack, "vlan_id key is not supported on egress"); 559 return -EOPNOTSUPP; 560 } 561 562 /* Forbid block with this rulei to be bound 563 * to egress in future. 564 */ 565 rulei->egress_bind_blocker = 1; 566 567 if (match.mask->vlan_id != 0) 568 mlxsw_sp_acl_rulei_keymask_u32(rulei, 569 MLXSW_AFK_ELEMENT_VID, 570 match.key->vlan_id, 571 match.mask->vlan_id); 572 if (match.mask->vlan_priority != 0) 573 mlxsw_sp_acl_rulei_keymask_u32(rulei, 574 MLXSW_AFK_ELEMENT_PCP, 575 match.key->vlan_priority, 576 match.mask->vlan_priority); 577 } 578 579 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) 580 mlxsw_sp_flower_parse_ipv4(rulei, f); 581 582 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) 583 mlxsw_sp_flower_parse_ipv6(rulei, f); 584 585 err = mlxsw_sp_flower_parse_ports(mlxsw_sp, rulei, f, ip_proto); 586 if (err) 587 return err; 588 err = mlxsw_sp_flower_parse_tcp(mlxsw_sp, rulei, f, ip_proto); 589 if (err) 590 return err; 591 592 err = mlxsw_sp_flower_parse_ip(mlxsw_sp, rulei, f, n_proto_key & n_proto_mask); 593 if (err) 594 return err; 595 596 return mlxsw_sp_flower_parse_actions(mlxsw_sp, block, rulei, 597 &f->rule->action, 598 f->common.extack); 599 } 600 601 static int mlxsw_sp_flower_mall_prio_check(struct mlxsw_sp_flow_block *block, 602 struct flow_cls_offload *f) 603 { 604 bool ingress = mlxsw_sp_flow_block_is_ingress_bound(block); 605 unsigned int mall_min_prio; 606 unsigned int mall_max_prio; 607 int err; 608 609 err = mlxsw_sp_mall_prio_get(block, f->common.chain_index, 610 &mall_min_prio, &mall_max_prio); 611 if (err) { 612 if (err == -ENOENT) 613 /* No matchall filters installed on this chain. */ 614 return 0; 615 NL_SET_ERR_MSG(f->common.extack, "Failed to get matchall priorities"); 616 return err; 617 } 618 if (ingress && f->common.prio <= mall_min_prio) { 619 NL_SET_ERR_MSG(f->common.extack, "Failed to add in front of existing matchall rules"); 620 return -EOPNOTSUPP; 621 } 622 if (!ingress && f->common.prio >= mall_max_prio) { 623 NL_SET_ERR_MSG(f->common.extack, "Failed to add behind of existing matchall rules"); 624 return -EOPNOTSUPP; 625 } 626 return 0; 627 } 628 629 int mlxsw_sp_flower_replace(struct mlxsw_sp *mlxsw_sp, 630 struct mlxsw_sp_flow_block *block, 631 struct flow_cls_offload *f) 632 { 633 struct mlxsw_sp_acl_rule_info *rulei; 634 struct mlxsw_sp_acl_ruleset *ruleset; 635 struct mlxsw_sp_acl_rule *rule; 636 int err; 637 638 err = mlxsw_sp_flower_mall_prio_check(block, f); 639 if (err) 640 return err; 641 642 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 643 f->common.chain_index, 644 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 645 if (IS_ERR(ruleset)) 646 return PTR_ERR(ruleset); 647 648 rule = mlxsw_sp_acl_rule_create(mlxsw_sp, ruleset, f->cookie, NULL, 649 f->common.extack); 650 if (IS_ERR(rule)) { 651 err = PTR_ERR(rule); 652 goto err_rule_create; 653 } 654 655 rulei = mlxsw_sp_acl_rule_rulei(rule); 656 err = mlxsw_sp_flower_parse(mlxsw_sp, block, rulei, f); 657 if (err) 658 goto err_flower_parse; 659 660 err = mlxsw_sp_acl_rulei_commit(rulei); 661 if (err) 662 goto err_rulei_commit; 663 664 err = mlxsw_sp_acl_rule_add(mlxsw_sp, rule); 665 if (err) 666 goto err_rule_add; 667 668 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 669 return 0; 670 671 err_rule_add: 672 err_rulei_commit: 673 err_flower_parse: 674 mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule); 675 err_rule_create: 676 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 677 return err; 678 } 679 680 void mlxsw_sp_flower_destroy(struct mlxsw_sp *mlxsw_sp, 681 struct mlxsw_sp_flow_block *block, 682 struct flow_cls_offload *f) 683 { 684 struct mlxsw_sp_acl_ruleset *ruleset; 685 struct mlxsw_sp_acl_rule *rule; 686 687 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 688 f->common.chain_index, 689 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 690 if (IS_ERR(ruleset)) 691 return; 692 693 rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie); 694 if (rule) { 695 mlxsw_sp_acl_rule_del(mlxsw_sp, rule); 696 mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule); 697 } 698 699 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 700 } 701 702 int mlxsw_sp_flower_stats(struct mlxsw_sp *mlxsw_sp, 703 struct mlxsw_sp_flow_block *block, 704 struct flow_cls_offload *f) 705 { 706 enum flow_action_hw_stats used_hw_stats = FLOW_ACTION_HW_STATS_DISABLED; 707 struct mlxsw_sp_acl_ruleset *ruleset; 708 struct mlxsw_sp_acl_rule *rule; 709 u64 packets; 710 u64 lastuse; 711 u64 bytes; 712 u64 drops; 713 int err; 714 715 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 716 f->common.chain_index, 717 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 718 if (WARN_ON(IS_ERR(ruleset))) 719 return -EINVAL; 720 721 rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie); 722 if (!rule) 723 return -EINVAL; 724 725 err = mlxsw_sp_acl_rule_get_stats(mlxsw_sp, rule, &packets, &bytes, 726 &drops, &lastuse, &used_hw_stats); 727 if (err) 728 goto err_rule_get_stats; 729 730 flow_stats_update(&f->stats, bytes, packets, drops, lastuse, 731 used_hw_stats); 732 733 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 734 return 0; 735 736 err_rule_get_stats: 737 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 738 return err; 739 } 740 741 int mlxsw_sp_flower_tmplt_create(struct mlxsw_sp *mlxsw_sp, 742 struct mlxsw_sp_flow_block *block, 743 struct flow_cls_offload *f) 744 { 745 struct mlxsw_sp_acl_ruleset *ruleset; 746 struct mlxsw_sp_acl_rule_info rulei; 747 int err; 748 749 memset(&rulei, 0, sizeof(rulei)); 750 err = mlxsw_sp_flower_parse(mlxsw_sp, block, &rulei, f); 751 if (err) 752 return err; 753 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 754 f->common.chain_index, 755 MLXSW_SP_ACL_PROFILE_FLOWER, 756 &rulei.values.elusage); 757 758 /* keep the reference to the ruleset */ 759 return PTR_ERR_OR_ZERO(ruleset); 760 } 761 762 void mlxsw_sp_flower_tmplt_destroy(struct mlxsw_sp *mlxsw_sp, 763 struct mlxsw_sp_flow_block *block, 764 struct flow_cls_offload *f) 765 { 766 struct mlxsw_sp_acl_ruleset *ruleset; 767 768 ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block, 769 f->common.chain_index, 770 MLXSW_SP_ACL_PROFILE_FLOWER, NULL); 771 if (IS_ERR(ruleset)) 772 return; 773 /* put the reference to the ruleset kept in create */ 774 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 775 mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); 776 } 777 778 int mlxsw_sp_flower_prio_get(struct mlxsw_sp *mlxsw_sp, 779 struct mlxsw_sp_flow_block *block, 780 u32 chain_index, unsigned int *p_min_prio, 781 unsigned int *p_max_prio) 782 { 783 struct mlxsw_sp_acl_ruleset *ruleset; 784 785 ruleset = mlxsw_sp_acl_ruleset_lookup(mlxsw_sp, block, 786 chain_index, 787 MLXSW_SP_ACL_PROFILE_FLOWER); 788 if (IS_ERR(ruleset)) 789 /* In case there are no flower rules, the caller 790 * receives -ENOENT to indicate there is no need 791 * to check the priorities. 792 */ 793 return PTR_ERR(ruleset); 794 mlxsw_sp_acl_ruleset_prio_get(ruleset, p_min_prio, p_max_prio); 795 return 0; 796 } 797