1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /* Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved */ 3 4 #include <linux/kernel.h> 5 #include <linux/types.h> 6 #include <linux/rhashtable.h> 7 #include <linux/bitops.h> 8 #include <linux/in6.h> 9 #include <linux/notifier.h> 10 #include <linux/inetdevice.h> 11 #include <linux/netdevice.h> 12 #include <linux/if_bridge.h> 13 #include <linux/socket.h> 14 #include <linux/route.h> 15 #include <linux/gcd.h> 16 #include <linux/if_macvlan.h> 17 #include <linux/refcount.h> 18 #include <linux/jhash.h> 19 #include <linux/net_namespace.h> 20 #include <linux/mutex.h> 21 #include <linux/genalloc.h> 22 #include <linux/xarray.h> 23 #include <net/netevent.h> 24 #include <net/neighbour.h> 25 #include <net/arp.h> 26 #include <net/inet_dscp.h> 27 #include <net/ip_fib.h> 28 #include <net/ip6_fib.h> 29 #include <net/nexthop.h> 30 #include <net/fib_rules.h> 31 #include <net/ip_tunnels.h> 32 #include <net/l3mdev.h> 33 #include <net/addrconf.h> 34 #include <net/ndisc.h> 35 #include <net/ipv6.h> 36 #include <net/fib_notifier.h> 37 #include <net/switchdev.h> 38 39 #include "spectrum.h" 40 #include "core.h" 41 #include "reg.h" 42 #include "spectrum_cnt.h" 43 #include "spectrum_dpipe.h" 44 #include "spectrum_ipip.h" 45 #include "spectrum_mr.h" 46 #include "spectrum_mr_tcam.h" 47 #include "spectrum_router.h" 48 #include "spectrum_span.h" 49 50 struct mlxsw_sp_fib; 51 struct mlxsw_sp_vr; 52 struct mlxsw_sp_lpm_tree; 53 struct mlxsw_sp_rif_ops; 54 55 struct mlxsw_sp_crif_key { 56 struct net_device *dev; 57 }; 58 59 struct mlxsw_sp_crif { 60 struct mlxsw_sp_crif_key key; 61 struct rhash_head ht_node; 62 bool can_destroy; 63 struct list_head nexthop_list; 64 struct mlxsw_sp_rif *rif; 65 }; 66 67 static const struct rhashtable_params mlxsw_sp_crif_ht_params = { 68 .key_offset = offsetof(struct mlxsw_sp_crif, key), 69 .key_len = sizeof_field(struct mlxsw_sp_crif, key), 70 .head_offset = offsetof(struct mlxsw_sp_crif, ht_node), 71 }; 72 73 struct mlxsw_sp_rif { 74 struct mlxsw_sp_crif *crif; /* NULL for underlay RIF */ 75 netdevice_tracker dev_tracker; 76 struct list_head neigh_list; 77 struct mlxsw_sp_fid *fid; 78 unsigned char addr[ETH_ALEN]; 79 int mtu; 80 u16 rif_index; 81 u8 mac_profile_id; 82 u8 rif_entries; 83 u16 vr_id; 84 const struct mlxsw_sp_rif_ops *ops; 85 struct mlxsw_sp *mlxsw_sp; 86 87 unsigned int counter_ingress; 88 bool counter_ingress_valid; 89 unsigned int counter_egress; 90 bool counter_egress_valid; 91 }; 92 93 static struct net_device *mlxsw_sp_rif_dev(const struct mlxsw_sp_rif *rif) 94 { 95 if (!rif->crif) 96 return NULL; 97 return rif->crif->key.dev; 98 } 99 100 struct mlxsw_sp_rif_params { 101 struct net_device *dev; 102 union { 103 u16 system_port; 104 u16 lag_id; 105 }; 106 u16 vid; 107 bool lag; 108 bool double_entry; 109 }; 110 111 struct mlxsw_sp_rif_subport { 112 struct mlxsw_sp_rif common; 113 refcount_t ref_count; 114 union { 115 u16 system_port; 116 u16 lag_id; 117 }; 118 u16 vid; 119 bool lag; 120 }; 121 122 struct mlxsw_sp_rif_ipip_lb { 123 struct mlxsw_sp_rif common; 124 struct mlxsw_sp_rif_ipip_lb_config lb_config; 125 u16 ul_vr_id; /* Spectrum-1. */ 126 u16 ul_rif_id; /* Spectrum-2+. */ 127 }; 128 129 struct mlxsw_sp_rif_params_ipip_lb { 130 struct mlxsw_sp_rif_params common; 131 struct mlxsw_sp_rif_ipip_lb_config lb_config; 132 }; 133 134 struct mlxsw_sp_rif_ops { 135 enum mlxsw_sp_rif_type type; 136 size_t rif_size; 137 138 void (*setup)(struct mlxsw_sp_rif *rif, 139 const struct mlxsw_sp_rif_params *params); 140 int (*configure)(struct mlxsw_sp_rif *rif, 141 struct netlink_ext_ack *extack); 142 void (*deconfigure)(struct mlxsw_sp_rif *rif); 143 struct mlxsw_sp_fid * (*fid_get)(struct mlxsw_sp_rif *rif, 144 const struct mlxsw_sp_rif_params *params, 145 struct netlink_ext_ack *extack); 146 void (*fdb_del)(struct mlxsw_sp_rif *rif, const char *mac); 147 }; 148 149 struct mlxsw_sp_rif_mac_profile { 150 unsigned char mac_prefix[ETH_ALEN]; 151 refcount_t ref_count; 152 u8 id; 153 }; 154 155 struct mlxsw_sp_router_ops { 156 int (*init)(struct mlxsw_sp *mlxsw_sp); 157 int (*ipips_init)(struct mlxsw_sp *mlxsw_sp); 158 }; 159 160 static struct mlxsw_sp_rif * 161 mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, 162 const struct net_device *dev); 163 static void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif); 164 static void mlxsw_sp_lpm_tree_hold(struct mlxsw_sp_lpm_tree *lpm_tree); 165 static void mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, 166 struct mlxsw_sp_lpm_tree *lpm_tree); 167 static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, 168 const struct mlxsw_sp_fib *fib, 169 u8 tree_id); 170 static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, 171 const struct mlxsw_sp_fib *fib); 172 173 static unsigned int * 174 mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif, 175 enum mlxsw_sp_rif_counter_dir dir) 176 { 177 switch (dir) { 178 case MLXSW_SP_RIF_COUNTER_EGRESS: 179 return &rif->counter_egress; 180 case MLXSW_SP_RIF_COUNTER_INGRESS: 181 return &rif->counter_ingress; 182 } 183 return NULL; 184 } 185 186 static bool 187 mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif, 188 enum mlxsw_sp_rif_counter_dir dir) 189 { 190 switch (dir) { 191 case MLXSW_SP_RIF_COUNTER_EGRESS: 192 return rif->counter_egress_valid; 193 case MLXSW_SP_RIF_COUNTER_INGRESS: 194 return rif->counter_ingress_valid; 195 } 196 return false; 197 } 198 199 static void 200 mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif, 201 enum mlxsw_sp_rif_counter_dir dir, 202 bool valid) 203 { 204 switch (dir) { 205 case MLXSW_SP_RIF_COUNTER_EGRESS: 206 rif->counter_egress_valid = valid; 207 break; 208 case MLXSW_SP_RIF_COUNTER_INGRESS: 209 rif->counter_ingress_valid = valid; 210 break; 211 } 212 } 213 214 static int mlxsw_sp_rif_counter_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, 215 unsigned int counter_index, bool enable, 216 enum mlxsw_sp_rif_counter_dir dir) 217 { 218 char ritr_pl[MLXSW_REG_RITR_LEN]; 219 bool is_egress = false; 220 int err; 221 222 if (dir == MLXSW_SP_RIF_COUNTER_EGRESS) 223 is_egress = true; 224 mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); 225 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 226 if (err) 227 return err; 228 229 mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable, 230 is_egress); 231 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 232 } 233 234 int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp, 235 struct mlxsw_sp_rif *rif, 236 enum mlxsw_sp_rif_counter_dir dir, u64 *cnt) 237 { 238 char ricnt_pl[MLXSW_REG_RICNT_LEN]; 239 unsigned int *p_counter_index; 240 bool valid; 241 int err; 242 243 valid = mlxsw_sp_rif_counter_valid_get(rif, dir); 244 if (!valid) 245 return -EINVAL; 246 247 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); 248 if (!p_counter_index) 249 return -EINVAL; 250 mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index, 251 MLXSW_REG_RICNT_OPCODE_NOP); 252 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); 253 if (err) 254 return err; 255 *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl); 256 return 0; 257 } 258 259 struct mlxsw_sp_rif_counter_set_basic { 260 u64 good_unicast_packets; 261 u64 good_multicast_packets; 262 u64 good_broadcast_packets; 263 u64 good_unicast_bytes; 264 u64 good_multicast_bytes; 265 u64 good_broadcast_bytes; 266 u64 error_packets; 267 u64 discard_packets; 268 u64 error_bytes; 269 u64 discard_bytes; 270 }; 271 272 static int 273 mlxsw_sp_rif_counter_fetch_clear(struct mlxsw_sp_rif *rif, 274 enum mlxsw_sp_rif_counter_dir dir, 275 struct mlxsw_sp_rif_counter_set_basic *set) 276 { 277 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 278 char ricnt_pl[MLXSW_REG_RICNT_LEN]; 279 unsigned int *p_counter_index; 280 int err; 281 282 if (!mlxsw_sp_rif_counter_valid_get(rif, dir)) 283 return -EINVAL; 284 285 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); 286 if (!p_counter_index) 287 return -EINVAL; 288 289 mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index, 290 MLXSW_REG_RICNT_OPCODE_CLEAR); 291 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); 292 if (err) 293 return err; 294 295 if (!set) 296 return 0; 297 298 #define MLXSW_SP_RIF_COUNTER_EXTRACT(NAME) \ 299 (set->NAME = mlxsw_reg_ricnt_ ## NAME ## _get(ricnt_pl)) 300 301 MLXSW_SP_RIF_COUNTER_EXTRACT(good_unicast_packets); 302 MLXSW_SP_RIF_COUNTER_EXTRACT(good_multicast_packets); 303 MLXSW_SP_RIF_COUNTER_EXTRACT(good_broadcast_packets); 304 MLXSW_SP_RIF_COUNTER_EXTRACT(good_unicast_bytes); 305 MLXSW_SP_RIF_COUNTER_EXTRACT(good_multicast_bytes); 306 MLXSW_SP_RIF_COUNTER_EXTRACT(good_broadcast_bytes); 307 MLXSW_SP_RIF_COUNTER_EXTRACT(error_packets); 308 MLXSW_SP_RIF_COUNTER_EXTRACT(discard_packets); 309 MLXSW_SP_RIF_COUNTER_EXTRACT(error_bytes); 310 MLXSW_SP_RIF_COUNTER_EXTRACT(discard_bytes); 311 312 #undef MLXSW_SP_RIF_COUNTER_EXTRACT 313 314 return 0; 315 } 316 317 static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp, 318 unsigned int counter_index) 319 { 320 char ricnt_pl[MLXSW_REG_RICNT_LEN]; 321 322 mlxsw_reg_ricnt_pack(ricnt_pl, counter_index, 323 MLXSW_REG_RICNT_OPCODE_CLEAR); 324 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); 325 } 326 327 int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp_rif *rif, 328 enum mlxsw_sp_rif_counter_dir dir) 329 { 330 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 331 unsigned int *p_counter_index; 332 int err; 333 334 if (mlxsw_sp_rif_counter_valid_get(rif, dir)) 335 return 0; 336 337 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); 338 if (!p_counter_index) 339 return -EINVAL; 340 341 err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, 342 p_counter_index); 343 if (err) 344 return err; 345 346 err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index); 347 if (err) 348 goto err_counter_clear; 349 350 err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, 351 *p_counter_index, true, dir); 352 if (err) 353 goto err_counter_edit; 354 mlxsw_sp_rif_counter_valid_set(rif, dir, true); 355 return 0; 356 357 err_counter_edit: 358 err_counter_clear: 359 mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, 360 *p_counter_index); 361 return err; 362 } 363 364 void mlxsw_sp_rif_counter_free(struct mlxsw_sp_rif *rif, 365 enum mlxsw_sp_rif_counter_dir dir) 366 { 367 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 368 unsigned int *p_counter_index; 369 370 if (!mlxsw_sp_rif_counter_valid_get(rif, dir)) 371 return; 372 373 p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); 374 if (WARN_ON(!p_counter_index)) 375 return; 376 mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, 377 *p_counter_index, false, dir); 378 mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, 379 *p_counter_index); 380 mlxsw_sp_rif_counter_valid_set(rif, dir, false); 381 } 382 383 static void mlxsw_sp_rif_counters_alloc(struct mlxsw_sp_rif *rif) 384 { 385 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 386 struct devlink *devlink; 387 388 devlink = priv_to_devlink(mlxsw_sp->core); 389 if (!devlink_dpipe_table_counter_enabled(devlink, 390 MLXSW_SP_DPIPE_TABLE_NAME_ERIF)) 391 return; 392 mlxsw_sp_rif_counter_alloc(rif, MLXSW_SP_RIF_COUNTER_EGRESS); 393 } 394 395 static void mlxsw_sp_rif_counters_free(struct mlxsw_sp_rif *rif) 396 { 397 mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_EGRESS); 398 } 399 400 #define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE + 1) 401 402 struct mlxsw_sp_prefix_usage { 403 DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT); 404 }; 405 406 #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \ 407 for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT) 408 409 static bool 410 mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1, 411 struct mlxsw_sp_prefix_usage *prefix_usage2) 412 { 413 return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); 414 } 415 416 static void 417 mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1, 418 struct mlxsw_sp_prefix_usage *prefix_usage2) 419 { 420 memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); 421 } 422 423 static void 424 mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage, 425 unsigned char prefix_len) 426 { 427 set_bit(prefix_len, prefix_usage->b); 428 } 429 430 static void 431 mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, 432 unsigned char prefix_len) 433 { 434 clear_bit(prefix_len, prefix_usage->b); 435 } 436 437 struct mlxsw_sp_fib_key { 438 unsigned char addr[sizeof(struct in6_addr)]; 439 unsigned char prefix_len; 440 }; 441 442 enum mlxsw_sp_fib_entry_type { 443 MLXSW_SP_FIB_ENTRY_TYPE_REMOTE, 444 MLXSW_SP_FIB_ENTRY_TYPE_LOCAL, 445 MLXSW_SP_FIB_ENTRY_TYPE_TRAP, 446 MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE, 447 MLXSW_SP_FIB_ENTRY_TYPE_UNREACHABLE, 448 449 /* This is a special case of local delivery, where a packet should be 450 * decapsulated on reception. Note that there is no corresponding ENCAP, 451 * because that's a type of next hop, not of FIB entry. (There can be 452 * several next hops in a REMOTE entry, and some of them may be 453 * encapsulating entries.) 454 */ 455 MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP, 456 MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP, 457 }; 458 459 struct mlxsw_sp_nexthop_group_info; 460 struct mlxsw_sp_nexthop_group; 461 struct mlxsw_sp_fib_entry; 462 463 struct mlxsw_sp_fib_node { 464 struct mlxsw_sp_fib_entry *fib_entry; 465 struct list_head list; 466 struct rhash_head ht_node; 467 struct mlxsw_sp_fib *fib; 468 struct mlxsw_sp_fib_key key; 469 }; 470 471 struct mlxsw_sp_fib_entry_decap { 472 struct mlxsw_sp_ipip_entry *ipip_entry; 473 u32 tunnel_index; 474 }; 475 476 struct mlxsw_sp_fib_entry { 477 struct mlxsw_sp_fib_node *fib_node; 478 enum mlxsw_sp_fib_entry_type type; 479 struct list_head nexthop_group_node; 480 struct mlxsw_sp_nexthop_group *nh_group; 481 struct mlxsw_sp_fib_entry_decap decap; /* Valid for decap entries. */ 482 }; 483 484 struct mlxsw_sp_fib4_entry { 485 struct mlxsw_sp_fib_entry common; 486 struct fib_info *fi; 487 u32 tb_id; 488 dscp_t dscp; 489 u8 type; 490 }; 491 492 struct mlxsw_sp_fib6_entry { 493 struct mlxsw_sp_fib_entry common; 494 struct list_head rt6_list; 495 unsigned int nrt6; 496 }; 497 498 struct mlxsw_sp_rt6 { 499 struct list_head list; 500 struct fib6_info *rt; 501 }; 502 503 struct mlxsw_sp_lpm_tree { 504 u8 id; /* tree ID */ 505 refcount_t ref_count; 506 enum mlxsw_sp_l3proto proto; 507 unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT]; 508 struct mlxsw_sp_prefix_usage prefix_usage; 509 }; 510 511 struct mlxsw_sp_fib { 512 struct rhashtable ht; 513 struct list_head node_list; 514 struct mlxsw_sp_vr *vr; 515 struct mlxsw_sp_lpm_tree *lpm_tree; 516 enum mlxsw_sp_l3proto proto; 517 }; 518 519 struct mlxsw_sp_vr { 520 u16 id; /* virtual router ID */ 521 u32 tb_id; /* kernel fib table id */ 522 unsigned int rif_count; 523 struct mlxsw_sp_fib *fib4; 524 struct mlxsw_sp_fib *fib6; 525 struct mlxsw_sp_mr_table *mr_table[MLXSW_SP_L3_PROTO_MAX]; 526 struct mlxsw_sp_rif *ul_rif; 527 refcount_t ul_rif_refcnt; 528 }; 529 530 static const struct rhashtable_params mlxsw_sp_fib_ht_params; 531 532 static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp *mlxsw_sp, 533 struct mlxsw_sp_vr *vr, 534 enum mlxsw_sp_l3proto proto) 535 { 536 struct mlxsw_sp_lpm_tree *lpm_tree; 537 struct mlxsw_sp_fib *fib; 538 int err; 539 540 lpm_tree = mlxsw_sp->router->lpm.proto_trees[proto]; 541 fib = kzalloc(sizeof(*fib), GFP_KERNEL); 542 if (!fib) 543 return ERR_PTR(-ENOMEM); 544 err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params); 545 if (err) 546 goto err_rhashtable_init; 547 INIT_LIST_HEAD(&fib->node_list); 548 fib->proto = proto; 549 fib->vr = vr; 550 fib->lpm_tree = lpm_tree; 551 mlxsw_sp_lpm_tree_hold(lpm_tree); 552 err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib, lpm_tree->id); 553 if (err) 554 goto err_lpm_tree_bind; 555 return fib; 556 557 err_lpm_tree_bind: 558 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); 559 err_rhashtable_init: 560 kfree(fib); 561 return ERR_PTR(err); 562 } 563 564 static void mlxsw_sp_fib_destroy(struct mlxsw_sp *mlxsw_sp, 565 struct mlxsw_sp_fib *fib) 566 { 567 mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); 568 mlxsw_sp_lpm_tree_put(mlxsw_sp, fib->lpm_tree); 569 WARN_ON(!list_empty(&fib->node_list)); 570 rhashtable_destroy(&fib->ht); 571 kfree(fib); 572 } 573 574 static struct mlxsw_sp_lpm_tree * 575 mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp) 576 { 577 static struct mlxsw_sp_lpm_tree *lpm_tree; 578 int i; 579 580 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { 581 lpm_tree = &mlxsw_sp->router->lpm.trees[i]; 582 if (refcount_read(&lpm_tree->ref_count) == 0) 583 return lpm_tree; 584 } 585 return NULL; 586 } 587 588 static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp, 589 struct mlxsw_sp_lpm_tree *lpm_tree) 590 { 591 char ralta_pl[MLXSW_REG_RALTA_LEN]; 592 593 mlxsw_reg_ralta_pack(ralta_pl, true, 594 (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, 595 lpm_tree->id); 596 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); 597 } 598 599 static void mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp, 600 struct mlxsw_sp_lpm_tree *lpm_tree) 601 { 602 char ralta_pl[MLXSW_REG_RALTA_LEN]; 603 604 mlxsw_reg_ralta_pack(ralta_pl, false, 605 (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, 606 lpm_tree->id); 607 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); 608 } 609 610 static int 611 mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp, 612 struct mlxsw_sp_prefix_usage *prefix_usage, 613 struct mlxsw_sp_lpm_tree *lpm_tree) 614 { 615 char ralst_pl[MLXSW_REG_RALST_LEN]; 616 u8 root_bin = 0; 617 u8 prefix; 618 u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD; 619 620 mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) 621 root_bin = prefix; 622 623 mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id); 624 mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) { 625 if (prefix == 0) 626 continue; 627 mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix, 628 MLXSW_REG_RALST_BIN_NO_CHILD); 629 last_prefix = prefix; 630 } 631 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); 632 } 633 634 static struct mlxsw_sp_lpm_tree * 635 mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp, 636 struct mlxsw_sp_prefix_usage *prefix_usage, 637 enum mlxsw_sp_l3proto proto) 638 { 639 struct mlxsw_sp_lpm_tree *lpm_tree; 640 int err; 641 642 lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp); 643 if (!lpm_tree) 644 return ERR_PTR(-EBUSY); 645 lpm_tree->proto = proto; 646 err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree); 647 if (err) 648 return ERR_PTR(err); 649 650 err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage, 651 lpm_tree); 652 if (err) 653 goto err_left_struct_set; 654 memcpy(&lpm_tree->prefix_usage, prefix_usage, 655 sizeof(lpm_tree->prefix_usage)); 656 memset(&lpm_tree->prefix_ref_count, 0, 657 sizeof(lpm_tree->prefix_ref_count)); 658 refcount_set(&lpm_tree->ref_count, 1); 659 return lpm_tree; 660 661 err_left_struct_set: 662 mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); 663 return ERR_PTR(err); 664 } 665 666 static void mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp, 667 struct mlxsw_sp_lpm_tree *lpm_tree) 668 { 669 mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); 670 } 671 672 static struct mlxsw_sp_lpm_tree * 673 mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp, 674 struct mlxsw_sp_prefix_usage *prefix_usage, 675 enum mlxsw_sp_l3proto proto) 676 { 677 struct mlxsw_sp_lpm_tree *lpm_tree; 678 int i; 679 680 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { 681 lpm_tree = &mlxsw_sp->router->lpm.trees[i]; 682 if (refcount_read(&lpm_tree->ref_count) && 683 lpm_tree->proto == proto && 684 mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage, 685 prefix_usage)) { 686 mlxsw_sp_lpm_tree_hold(lpm_tree); 687 return lpm_tree; 688 } 689 } 690 return mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, proto); 691 } 692 693 static void mlxsw_sp_lpm_tree_hold(struct mlxsw_sp_lpm_tree *lpm_tree) 694 { 695 refcount_inc(&lpm_tree->ref_count); 696 } 697 698 static void mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, 699 struct mlxsw_sp_lpm_tree *lpm_tree) 700 { 701 if (!refcount_dec_and_test(&lpm_tree->ref_count)) 702 return; 703 mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree); 704 } 705 706 #define MLXSW_SP_LPM_TREE_MIN 1 /* tree 0 is reserved */ 707 708 static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp) 709 { 710 struct mlxsw_sp_prefix_usage req_prefix_usage = {{ 0 } }; 711 struct mlxsw_sp_lpm_tree *lpm_tree; 712 u64 max_trees; 713 int err, i; 714 715 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES)) 716 return -EIO; 717 718 max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES); 719 mlxsw_sp->router->lpm.tree_count = max_trees - MLXSW_SP_LPM_TREE_MIN; 720 mlxsw_sp->router->lpm.trees = kcalloc(mlxsw_sp->router->lpm.tree_count, 721 sizeof(struct mlxsw_sp_lpm_tree), 722 GFP_KERNEL); 723 if (!mlxsw_sp->router->lpm.trees) 724 return -ENOMEM; 725 726 for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) { 727 lpm_tree = &mlxsw_sp->router->lpm.trees[i]; 728 lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN; 729 } 730 731 lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, 732 MLXSW_SP_L3_PROTO_IPV4); 733 if (IS_ERR(lpm_tree)) { 734 err = PTR_ERR(lpm_tree); 735 goto err_ipv4_tree_get; 736 } 737 mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV4] = lpm_tree; 738 739 lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, 740 MLXSW_SP_L3_PROTO_IPV6); 741 if (IS_ERR(lpm_tree)) { 742 err = PTR_ERR(lpm_tree); 743 goto err_ipv6_tree_get; 744 } 745 mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV6] = lpm_tree; 746 747 return 0; 748 749 err_ipv6_tree_get: 750 lpm_tree = mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV4]; 751 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); 752 err_ipv4_tree_get: 753 kfree(mlxsw_sp->router->lpm.trees); 754 return err; 755 } 756 757 static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp) 758 { 759 struct mlxsw_sp_lpm_tree *lpm_tree; 760 761 lpm_tree = mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV6]; 762 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); 763 764 lpm_tree = mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV4]; 765 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); 766 767 kfree(mlxsw_sp->router->lpm.trees); 768 } 769 770 static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr) 771 { 772 return !!vr->fib4 || !!vr->fib6 || 773 !!vr->mr_table[MLXSW_SP_L3_PROTO_IPV4] || 774 !!vr->mr_table[MLXSW_SP_L3_PROTO_IPV6]; 775 } 776 777 static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp) 778 { 779 int max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); 780 struct mlxsw_sp_vr *vr; 781 int i; 782 783 for (i = 0; i < max_vrs; i++) { 784 vr = &mlxsw_sp->router->vrs[i]; 785 if (!mlxsw_sp_vr_is_used(vr)) 786 return vr; 787 } 788 return NULL; 789 } 790 791 static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, 792 const struct mlxsw_sp_fib *fib, u8 tree_id) 793 { 794 char raltb_pl[MLXSW_REG_RALTB_LEN]; 795 796 mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, 797 (enum mlxsw_reg_ralxx_protocol) fib->proto, 798 tree_id); 799 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); 800 } 801 802 static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, 803 const struct mlxsw_sp_fib *fib) 804 { 805 char raltb_pl[MLXSW_REG_RALTB_LEN]; 806 807 /* Bind to tree 0 which is default */ 808 mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, 809 (enum mlxsw_reg_ralxx_protocol) fib->proto, 0); 810 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); 811 } 812 813 static u32 mlxsw_sp_fix_tb_id(u32 tb_id) 814 { 815 /* For our purpose, squash main, default and local tables into one */ 816 if (tb_id == RT_TABLE_LOCAL || tb_id == RT_TABLE_DEFAULT) 817 tb_id = RT_TABLE_MAIN; 818 return tb_id; 819 } 820 821 static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp, 822 u32 tb_id) 823 { 824 int max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); 825 struct mlxsw_sp_vr *vr; 826 int i; 827 828 tb_id = mlxsw_sp_fix_tb_id(tb_id); 829 830 for (i = 0; i < max_vrs; i++) { 831 vr = &mlxsw_sp->router->vrs[i]; 832 if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id) 833 return vr; 834 } 835 return NULL; 836 } 837 838 int mlxsw_sp_router_tb_id_vr_id(struct mlxsw_sp *mlxsw_sp, u32 tb_id, 839 u16 *vr_id) 840 { 841 struct mlxsw_sp_vr *vr; 842 int err = 0; 843 844 mutex_lock(&mlxsw_sp->router->lock); 845 vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); 846 if (!vr) { 847 err = -ESRCH; 848 goto out; 849 } 850 *vr_id = vr->id; 851 out: 852 mutex_unlock(&mlxsw_sp->router->lock); 853 return err; 854 } 855 856 static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr, 857 enum mlxsw_sp_l3proto proto) 858 { 859 switch (proto) { 860 case MLXSW_SP_L3_PROTO_IPV4: 861 return vr->fib4; 862 case MLXSW_SP_L3_PROTO_IPV6: 863 return vr->fib6; 864 } 865 return NULL; 866 } 867 868 static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp, 869 u32 tb_id, 870 struct netlink_ext_ack *extack) 871 { 872 struct mlxsw_sp_mr_table *mr4_table, *mr6_table; 873 struct mlxsw_sp_fib *fib4; 874 struct mlxsw_sp_fib *fib6; 875 struct mlxsw_sp_vr *vr; 876 int err; 877 878 vr = mlxsw_sp_vr_find_unused(mlxsw_sp); 879 if (!vr) { 880 NL_SET_ERR_MSG_MOD(extack, "Exceeded number of supported virtual routers"); 881 return ERR_PTR(-EBUSY); 882 } 883 fib4 = mlxsw_sp_fib_create(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); 884 if (IS_ERR(fib4)) 885 return ERR_CAST(fib4); 886 fib6 = mlxsw_sp_fib_create(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV6); 887 if (IS_ERR(fib6)) { 888 err = PTR_ERR(fib6); 889 goto err_fib6_create; 890 } 891 mr4_table = mlxsw_sp_mr_table_create(mlxsw_sp, vr->id, 892 MLXSW_SP_L3_PROTO_IPV4); 893 if (IS_ERR(mr4_table)) { 894 err = PTR_ERR(mr4_table); 895 goto err_mr4_table_create; 896 } 897 mr6_table = mlxsw_sp_mr_table_create(mlxsw_sp, vr->id, 898 MLXSW_SP_L3_PROTO_IPV6); 899 if (IS_ERR(mr6_table)) { 900 err = PTR_ERR(mr6_table); 901 goto err_mr6_table_create; 902 } 903 904 vr->fib4 = fib4; 905 vr->fib6 = fib6; 906 vr->mr_table[MLXSW_SP_L3_PROTO_IPV4] = mr4_table; 907 vr->mr_table[MLXSW_SP_L3_PROTO_IPV6] = mr6_table; 908 vr->tb_id = tb_id; 909 return vr; 910 911 err_mr6_table_create: 912 mlxsw_sp_mr_table_destroy(mr4_table); 913 err_mr4_table_create: 914 mlxsw_sp_fib_destroy(mlxsw_sp, fib6); 915 err_fib6_create: 916 mlxsw_sp_fib_destroy(mlxsw_sp, fib4); 917 return ERR_PTR(err); 918 } 919 920 static void mlxsw_sp_vr_destroy(struct mlxsw_sp *mlxsw_sp, 921 struct mlxsw_sp_vr *vr) 922 { 923 mlxsw_sp_mr_table_destroy(vr->mr_table[MLXSW_SP_L3_PROTO_IPV6]); 924 vr->mr_table[MLXSW_SP_L3_PROTO_IPV6] = NULL; 925 mlxsw_sp_mr_table_destroy(vr->mr_table[MLXSW_SP_L3_PROTO_IPV4]); 926 vr->mr_table[MLXSW_SP_L3_PROTO_IPV4] = NULL; 927 mlxsw_sp_fib_destroy(mlxsw_sp, vr->fib6); 928 vr->fib6 = NULL; 929 mlxsw_sp_fib_destroy(mlxsw_sp, vr->fib4); 930 vr->fib4 = NULL; 931 } 932 933 static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id, 934 struct netlink_ext_ack *extack) 935 { 936 struct mlxsw_sp_vr *vr; 937 938 tb_id = mlxsw_sp_fix_tb_id(tb_id); 939 vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); 940 if (!vr) 941 vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id, extack); 942 return vr; 943 } 944 945 static void mlxsw_sp_vr_put(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_vr *vr) 946 { 947 if (!vr->rif_count && list_empty(&vr->fib4->node_list) && 948 list_empty(&vr->fib6->node_list) && 949 mlxsw_sp_mr_table_empty(vr->mr_table[MLXSW_SP_L3_PROTO_IPV4]) && 950 mlxsw_sp_mr_table_empty(vr->mr_table[MLXSW_SP_L3_PROTO_IPV6])) 951 mlxsw_sp_vr_destroy(mlxsw_sp, vr); 952 } 953 954 static bool 955 mlxsw_sp_vr_lpm_tree_should_replace(struct mlxsw_sp_vr *vr, 956 enum mlxsw_sp_l3proto proto, u8 tree_id) 957 { 958 struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); 959 960 if (!mlxsw_sp_vr_is_used(vr)) 961 return false; 962 if (fib->lpm_tree->id == tree_id) 963 return true; 964 return false; 965 } 966 967 static int mlxsw_sp_vr_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp, 968 struct mlxsw_sp_fib *fib, 969 struct mlxsw_sp_lpm_tree *new_tree) 970 { 971 struct mlxsw_sp_lpm_tree *old_tree = fib->lpm_tree; 972 int err; 973 974 fib->lpm_tree = new_tree; 975 mlxsw_sp_lpm_tree_hold(new_tree); 976 err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib, new_tree->id); 977 if (err) 978 goto err_tree_bind; 979 mlxsw_sp_lpm_tree_put(mlxsw_sp, old_tree); 980 return 0; 981 982 err_tree_bind: 983 mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree); 984 fib->lpm_tree = old_tree; 985 return err; 986 } 987 988 static int mlxsw_sp_vrs_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp, 989 struct mlxsw_sp_fib *fib, 990 struct mlxsw_sp_lpm_tree *new_tree) 991 { 992 int max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); 993 enum mlxsw_sp_l3proto proto = fib->proto; 994 struct mlxsw_sp_lpm_tree *old_tree; 995 u8 old_id, new_id = new_tree->id; 996 struct mlxsw_sp_vr *vr; 997 int i, err; 998 999 old_tree = mlxsw_sp->router->lpm.proto_trees[proto]; 1000 old_id = old_tree->id; 1001 1002 for (i = 0; i < max_vrs; i++) { 1003 vr = &mlxsw_sp->router->vrs[i]; 1004 if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, old_id)) 1005 continue; 1006 err = mlxsw_sp_vr_lpm_tree_replace(mlxsw_sp, 1007 mlxsw_sp_vr_fib(vr, proto), 1008 new_tree); 1009 if (err) 1010 goto err_tree_replace; 1011 } 1012 1013 memcpy(new_tree->prefix_ref_count, old_tree->prefix_ref_count, 1014 sizeof(new_tree->prefix_ref_count)); 1015 mlxsw_sp->router->lpm.proto_trees[proto] = new_tree; 1016 mlxsw_sp_lpm_tree_put(mlxsw_sp, old_tree); 1017 1018 return 0; 1019 1020 err_tree_replace: 1021 for (i--; i >= 0; i--) { 1022 if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, new_id)) 1023 continue; 1024 mlxsw_sp_vr_lpm_tree_replace(mlxsw_sp, 1025 mlxsw_sp_vr_fib(vr, proto), 1026 old_tree); 1027 } 1028 return err; 1029 } 1030 1031 static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp) 1032 { 1033 struct mlxsw_sp_vr *vr; 1034 u64 max_vrs; 1035 int i; 1036 1037 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS)) 1038 return -EIO; 1039 1040 max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); 1041 mlxsw_sp->router->vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr), 1042 GFP_KERNEL); 1043 if (!mlxsw_sp->router->vrs) 1044 return -ENOMEM; 1045 1046 for (i = 0; i < max_vrs; i++) { 1047 vr = &mlxsw_sp->router->vrs[i]; 1048 vr->id = i; 1049 } 1050 1051 return 0; 1052 } 1053 1054 static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp); 1055 1056 static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp) 1057 { 1058 /* At this stage we're guaranteed not to have new incoming 1059 * FIB notifications and the work queue is free from FIBs 1060 * sitting on top of mlxsw netdevs. However, we can still 1061 * have other FIBs queued. Flush the queue before flushing 1062 * the device's tables. No need for locks, as we're the only 1063 * writer. 1064 */ 1065 mlxsw_core_flush_owq(); 1066 mlxsw_sp_router_fib_flush(mlxsw_sp); 1067 kfree(mlxsw_sp->router->vrs); 1068 } 1069 1070 u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev) 1071 { 1072 struct net_device *d; 1073 u32 tb_id; 1074 1075 rcu_read_lock(); 1076 d = mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev); 1077 if (d) 1078 tb_id = l3mdev_fib_table(d) ? : RT_TABLE_MAIN; 1079 else 1080 tb_id = RT_TABLE_MAIN; 1081 rcu_read_unlock(); 1082 1083 return tb_id; 1084 } 1085 1086 static void 1087 mlxsw_sp_crif_init(struct mlxsw_sp_crif *crif, struct net_device *dev) 1088 { 1089 crif->key.dev = dev; 1090 INIT_LIST_HEAD(&crif->nexthop_list); 1091 } 1092 1093 static struct mlxsw_sp_crif * 1094 mlxsw_sp_crif_alloc(struct net_device *dev) 1095 { 1096 struct mlxsw_sp_crif *crif; 1097 1098 crif = kzalloc(sizeof(*crif), GFP_KERNEL); 1099 if (!crif) 1100 return NULL; 1101 1102 mlxsw_sp_crif_init(crif, dev); 1103 return crif; 1104 } 1105 1106 static void mlxsw_sp_crif_free(struct mlxsw_sp_crif *crif) 1107 { 1108 if (WARN_ON(crif->rif)) 1109 return; 1110 1111 WARN_ON(!list_empty(&crif->nexthop_list)); 1112 kfree(crif); 1113 } 1114 1115 static int mlxsw_sp_crif_insert(struct mlxsw_sp_router *router, 1116 struct mlxsw_sp_crif *crif) 1117 { 1118 return rhashtable_insert_fast(&router->crif_ht, &crif->ht_node, 1119 mlxsw_sp_crif_ht_params); 1120 } 1121 1122 static void mlxsw_sp_crif_remove(struct mlxsw_sp_router *router, 1123 struct mlxsw_sp_crif *crif) 1124 { 1125 rhashtable_remove_fast(&router->crif_ht, &crif->ht_node, 1126 mlxsw_sp_crif_ht_params); 1127 } 1128 1129 static struct mlxsw_sp_crif * 1130 mlxsw_sp_crif_lookup(struct mlxsw_sp_router *router, 1131 const struct net_device *dev) 1132 { 1133 struct mlxsw_sp_crif_key key = { 1134 .dev = (struct net_device *)dev, 1135 }; 1136 1137 return rhashtable_lookup_fast(&router->crif_ht, &key, 1138 mlxsw_sp_crif_ht_params); 1139 } 1140 1141 static struct mlxsw_sp_rif * 1142 mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp, 1143 const struct mlxsw_sp_rif_params *params, 1144 struct netlink_ext_ack *extack); 1145 1146 static struct mlxsw_sp_rif_ipip_lb * 1147 mlxsw_sp_ipip_ol_ipip_lb_create(struct mlxsw_sp *mlxsw_sp, 1148 enum mlxsw_sp_ipip_type ipipt, 1149 struct net_device *ol_dev, 1150 struct netlink_ext_ack *extack) 1151 { 1152 struct mlxsw_sp_rif_params_ipip_lb lb_params; 1153 const struct mlxsw_sp_ipip_ops *ipip_ops; 1154 struct mlxsw_sp_rif *rif; 1155 1156 ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipipt]; 1157 lb_params = (struct mlxsw_sp_rif_params_ipip_lb) { 1158 .common.dev = ol_dev, 1159 .common.lag = false, 1160 .common.double_entry = ipip_ops->double_rif_entry, 1161 .lb_config = ipip_ops->ol_loopback_config(mlxsw_sp, ol_dev), 1162 }; 1163 1164 rif = mlxsw_sp_rif_create(mlxsw_sp, &lb_params.common, extack); 1165 if (IS_ERR(rif)) 1166 return ERR_CAST(rif); 1167 return container_of(rif, struct mlxsw_sp_rif_ipip_lb, common); 1168 } 1169 1170 static struct mlxsw_sp_ipip_entry * 1171 mlxsw_sp_ipip_entry_alloc(struct mlxsw_sp *mlxsw_sp, 1172 enum mlxsw_sp_ipip_type ipipt, 1173 struct net_device *ol_dev) 1174 { 1175 const struct mlxsw_sp_ipip_ops *ipip_ops; 1176 struct mlxsw_sp_ipip_entry *ipip_entry; 1177 struct mlxsw_sp_ipip_entry *ret = NULL; 1178 int err; 1179 1180 ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipipt]; 1181 ipip_entry = kzalloc(sizeof(*ipip_entry), GFP_KERNEL); 1182 if (!ipip_entry) 1183 return ERR_PTR(-ENOMEM); 1184 1185 ipip_entry->ol_lb = mlxsw_sp_ipip_ol_ipip_lb_create(mlxsw_sp, ipipt, 1186 ol_dev, NULL); 1187 if (IS_ERR(ipip_entry->ol_lb)) { 1188 ret = ERR_CAST(ipip_entry->ol_lb); 1189 goto err_ol_ipip_lb_create; 1190 } 1191 1192 ipip_entry->ipipt = ipipt; 1193 ipip_entry->ol_dev = ol_dev; 1194 ipip_entry->parms = ipip_ops->parms_init(ol_dev); 1195 1196 err = ipip_ops->rem_ip_addr_set(mlxsw_sp, ipip_entry); 1197 if (err) { 1198 ret = ERR_PTR(err); 1199 goto err_rem_ip_addr_set; 1200 } 1201 1202 return ipip_entry; 1203 1204 err_rem_ip_addr_set: 1205 mlxsw_sp_rif_destroy(&ipip_entry->ol_lb->common); 1206 err_ol_ipip_lb_create: 1207 kfree(ipip_entry); 1208 return ret; 1209 } 1210 1211 static void mlxsw_sp_ipip_entry_dealloc(struct mlxsw_sp *mlxsw_sp, 1212 struct mlxsw_sp_ipip_entry *ipip_entry) 1213 { 1214 const struct mlxsw_sp_ipip_ops *ipip_ops = 1215 mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; 1216 1217 ipip_ops->rem_ip_addr_unset(mlxsw_sp, ipip_entry); 1218 mlxsw_sp_rif_destroy(&ipip_entry->ol_lb->common); 1219 kfree(ipip_entry); 1220 } 1221 1222 static bool 1223 mlxsw_sp_ipip_entry_saddr_matches(struct mlxsw_sp *mlxsw_sp, 1224 const enum mlxsw_sp_l3proto ul_proto, 1225 union mlxsw_sp_l3addr saddr, 1226 u32 ul_tb_id, 1227 struct mlxsw_sp_ipip_entry *ipip_entry) 1228 { 1229 u32 tun_ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ipip_entry->ol_dev); 1230 enum mlxsw_sp_ipip_type ipipt = ipip_entry->ipipt; 1231 union mlxsw_sp_l3addr tun_saddr; 1232 1233 if (mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto != ul_proto) 1234 return false; 1235 1236 tun_saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ipip_entry->ol_dev); 1237 return tun_ul_tb_id == ul_tb_id && 1238 mlxsw_sp_l3addr_eq(&tun_saddr, &saddr); 1239 } 1240 1241 static int mlxsw_sp_ipip_decap_parsing_depth_inc(struct mlxsw_sp *mlxsw_sp, 1242 enum mlxsw_sp_ipip_type ipipt) 1243 { 1244 const struct mlxsw_sp_ipip_ops *ipip_ops; 1245 1246 ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipipt]; 1247 1248 /* Not all tunnels require to increase the default pasing depth 1249 * (96 bytes). 1250 */ 1251 if (ipip_ops->inc_parsing_depth) 1252 return mlxsw_sp_parsing_depth_inc(mlxsw_sp); 1253 1254 return 0; 1255 } 1256 1257 static void mlxsw_sp_ipip_decap_parsing_depth_dec(struct mlxsw_sp *mlxsw_sp, 1258 enum mlxsw_sp_ipip_type ipipt) 1259 { 1260 const struct mlxsw_sp_ipip_ops *ipip_ops = 1261 mlxsw_sp->router->ipip_ops_arr[ipipt]; 1262 1263 if (ipip_ops->inc_parsing_depth) 1264 mlxsw_sp_parsing_depth_dec(mlxsw_sp); 1265 } 1266 1267 static int 1268 mlxsw_sp_fib_entry_decap_init(struct mlxsw_sp *mlxsw_sp, 1269 struct mlxsw_sp_fib_entry *fib_entry, 1270 struct mlxsw_sp_ipip_entry *ipip_entry) 1271 { 1272 u32 tunnel_index; 1273 int err; 1274 1275 err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1276 1, &tunnel_index); 1277 if (err) 1278 return err; 1279 1280 err = mlxsw_sp_ipip_decap_parsing_depth_inc(mlxsw_sp, 1281 ipip_entry->ipipt); 1282 if (err) 1283 goto err_parsing_depth_inc; 1284 1285 ipip_entry->decap_fib_entry = fib_entry; 1286 fib_entry->decap.ipip_entry = ipip_entry; 1287 fib_entry->decap.tunnel_index = tunnel_index; 1288 1289 return 0; 1290 1291 err_parsing_depth_inc: 1292 mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1, 1293 fib_entry->decap.tunnel_index); 1294 return err; 1295 } 1296 1297 static void mlxsw_sp_fib_entry_decap_fini(struct mlxsw_sp *mlxsw_sp, 1298 struct mlxsw_sp_fib_entry *fib_entry) 1299 { 1300 enum mlxsw_sp_ipip_type ipipt = fib_entry->decap.ipip_entry->ipipt; 1301 1302 /* Unlink this node from the IPIP entry that it's the decap entry of. */ 1303 fib_entry->decap.ipip_entry->decap_fib_entry = NULL; 1304 fib_entry->decap.ipip_entry = NULL; 1305 mlxsw_sp_ipip_decap_parsing_depth_dec(mlxsw_sp, ipipt); 1306 mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1307 1, fib_entry->decap.tunnel_index); 1308 } 1309 1310 static struct mlxsw_sp_fib_node * 1311 mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, 1312 size_t addr_len, unsigned char prefix_len); 1313 static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, 1314 struct mlxsw_sp_fib_entry *fib_entry); 1315 1316 static void 1317 mlxsw_sp_ipip_entry_demote_decap(struct mlxsw_sp *mlxsw_sp, 1318 struct mlxsw_sp_ipip_entry *ipip_entry) 1319 { 1320 struct mlxsw_sp_fib_entry *fib_entry = ipip_entry->decap_fib_entry; 1321 1322 mlxsw_sp_fib_entry_decap_fini(mlxsw_sp, fib_entry); 1323 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; 1324 1325 mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); 1326 } 1327 1328 static void 1329 mlxsw_sp_ipip_entry_promote_decap(struct mlxsw_sp *mlxsw_sp, 1330 struct mlxsw_sp_ipip_entry *ipip_entry, 1331 struct mlxsw_sp_fib_entry *decap_fib_entry) 1332 { 1333 if (mlxsw_sp_fib_entry_decap_init(mlxsw_sp, decap_fib_entry, 1334 ipip_entry)) 1335 return; 1336 decap_fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP; 1337 1338 if (mlxsw_sp_fib_entry_update(mlxsw_sp, decap_fib_entry)) 1339 mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry); 1340 } 1341 1342 static struct mlxsw_sp_fib_entry * 1343 mlxsw_sp_router_ip2me_fib_entry_find(struct mlxsw_sp *mlxsw_sp, u32 tb_id, 1344 enum mlxsw_sp_l3proto proto, 1345 const union mlxsw_sp_l3addr *addr, 1346 enum mlxsw_sp_fib_entry_type type) 1347 { 1348 struct mlxsw_sp_fib_node *fib_node; 1349 unsigned char addr_prefix_len; 1350 struct mlxsw_sp_fib *fib; 1351 struct mlxsw_sp_vr *vr; 1352 const void *addrp; 1353 size_t addr_len; 1354 u32 addr4; 1355 1356 vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); 1357 if (!vr) 1358 return NULL; 1359 fib = mlxsw_sp_vr_fib(vr, proto); 1360 1361 switch (proto) { 1362 case MLXSW_SP_L3_PROTO_IPV4: 1363 addr4 = be32_to_cpu(addr->addr4); 1364 addrp = &addr4; 1365 addr_len = 4; 1366 addr_prefix_len = 32; 1367 break; 1368 case MLXSW_SP_L3_PROTO_IPV6: 1369 addrp = &addr->addr6; 1370 addr_len = 16; 1371 addr_prefix_len = 128; 1372 break; 1373 default: 1374 WARN_ON(1); 1375 return NULL; 1376 } 1377 1378 fib_node = mlxsw_sp_fib_node_lookup(fib, addrp, addr_len, 1379 addr_prefix_len); 1380 if (!fib_node || fib_node->fib_entry->type != type) 1381 return NULL; 1382 1383 return fib_node->fib_entry; 1384 } 1385 1386 /* Given an IPIP entry, find the corresponding decap route. */ 1387 static struct mlxsw_sp_fib_entry * 1388 mlxsw_sp_ipip_entry_find_decap(struct mlxsw_sp *mlxsw_sp, 1389 struct mlxsw_sp_ipip_entry *ipip_entry) 1390 { 1391 static struct mlxsw_sp_fib_node *fib_node; 1392 const struct mlxsw_sp_ipip_ops *ipip_ops; 1393 unsigned char saddr_prefix_len; 1394 union mlxsw_sp_l3addr saddr; 1395 struct mlxsw_sp_fib *ul_fib; 1396 struct mlxsw_sp_vr *ul_vr; 1397 const void *saddrp; 1398 size_t saddr_len; 1399 u32 ul_tb_id; 1400 u32 saddr4; 1401 1402 ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; 1403 1404 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ipip_entry->ol_dev); 1405 ul_vr = mlxsw_sp_vr_find(mlxsw_sp, ul_tb_id); 1406 if (!ul_vr) 1407 return NULL; 1408 1409 ul_fib = mlxsw_sp_vr_fib(ul_vr, ipip_ops->ul_proto); 1410 saddr = mlxsw_sp_ipip_netdev_saddr(ipip_ops->ul_proto, 1411 ipip_entry->ol_dev); 1412 1413 switch (ipip_ops->ul_proto) { 1414 case MLXSW_SP_L3_PROTO_IPV4: 1415 saddr4 = be32_to_cpu(saddr.addr4); 1416 saddrp = &saddr4; 1417 saddr_len = 4; 1418 saddr_prefix_len = 32; 1419 break; 1420 case MLXSW_SP_L3_PROTO_IPV6: 1421 saddrp = &saddr.addr6; 1422 saddr_len = 16; 1423 saddr_prefix_len = 128; 1424 break; 1425 default: 1426 WARN_ON(1); 1427 return NULL; 1428 } 1429 1430 fib_node = mlxsw_sp_fib_node_lookup(ul_fib, saddrp, saddr_len, 1431 saddr_prefix_len); 1432 if (!fib_node || 1433 fib_node->fib_entry->type != MLXSW_SP_FIB_ENTRY_TYPE_TRAP) 1434 return NULL; 1435 1436 return fib_node->fib_entry; 1437 } 1438 1439 static struct mlxsw_sp_ipip_entry * 1440 mlxsw_sp_ipip_entry_create(struct mlxsw_sp *mlxsw_sp, 1441 enum mlxsw_sp_ipip_type ipipt, 1442 struct net_device *ol_dev) 1443 { 1444 struct mlxsw_sp_ipip_entry *ipip_entry; 1445 1446 ipip_entry = mlxsw_sp_ipip_entry_alloc(mlxsw_sp, ipipt, ol_dev); 1447 if (IS_ERR(ipip_entry)) 1448 return ipip_entry; 1449 1450 list_add_tail(&ipip_entry->ipip_list_node, 1451 &mlxsw_sp->router->ipip_list); 1452 1453 return ipip_entry; 1454 } 1455 1456 static void 1457 mlxsw_sp_ipip_entry_destroy(struct mlxsw_sp *mlxsw_sp, 1458 struct mlxsw_sp_ipip_entry *ipip_entry) 1459 { 1460 list_del(&ipip_entry->ipip_list_node); 1461 mlxsw_sp_ipip_entry_dealloc(mlxsw_sp, ipip_entry); 1462 } 1463 1464 static bool 1465 mlxsw_sp_ipip_entry_matches_decap(struct mlxsw_sp *mlxsw_sp, 1466 const struct net_device *ul_dev, 1467 enum mlxsw_sp_l3proto ul_proto, 1468 union mlxsw_sp_l3addr ul_dip, 1469 struct mlxsw_sp_ipip_entry *ipip_entry) 1470 { 1471 u32 ul_tb_id = l3mdev_fib_table(ul_dev) ? : RT_TABLE_MAIN; 1472 enum mlxsw_sp_ipip_type ipipt = ipip_entry->ipipt; 1473 1474 if (mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto != ul_proto) 1475 return false; 1476 1477 return mlxsw_sp_ipip_entry_saddr_matches(mlxsw_sp, ul_proto, ul_dip, 1478 ul_tb_id, ipip_entry); 1479 } 1480 1481 /* Given decap parameters, find the corresponding IPIP entry. */ 1482 static struct mlxsw_sp_ipip_entry * 1483 mlxsw_sp_ipip_entry_find_by_decap(struct mlxsw_sp *mlxsw_sp, int ul_dev_ifindex, 1484 enum mlxsw_sp_l3proto ul_proto, 1485 union mlxsw_sp_l3addr ul_dip) 1486 { 1487 struct mlxsw_sp_ipip_entry *ipip_entry = NULL; 1488 struct net_device *ul_dev; 1489 1490 rcu_read_lock(); 1491 1492 ul_dev = dev_get_by_index_rcu(mlxsw_sp_net(mlxsw_sp), ul_dev_ifindex); 1493 if (!ul_dev) 1494 goto out_unlock; 1495 1496 list_for_each_entry(ipip_entry, &mlxsw_sp->router->ipip_list, 1497 ipip_list_node) 1498 if (mlxsw_sp_ipip_entry_matches_decap(mlxsw_sp, ul_dev, 1499 ul_proto, ul_dip, 1500 ipip_entry)) 1501 goto out_unlock; 1502 1503 rcu_read_unlock(); 1504 1505 return NULL; 1506 1507 out_unlock: 1508 rcu_read_unlock(); 1509 return ipip_entry; 1510 } 1511 1512 static bool mlxsw_sp_netdev_ipip_type(const struct mlxsw_sp *mlxsw_sp, 1513 const struct net_device *dev, 1514 enum mlxsw_sp_ipip_type *p_type) 1515 { 1516 struct mlxsw_sp_router *router = mlxsw_sp->router; 1517 const struct mlxsw_sp_ipip_ops *ipip_ops; 1518 enum mlxsw_sp_ipip_type ipipt; 1519 1520 for (ipipt = 0; ipipt < MLXSW_SP_IPIP_TYPE_MAX; ++ipipt) { 1521 ipip_ops = router->ipip_ops_arr[ipipt]; 1522 if (dev->type == ipip_ops->dev_type) { 1523 if (p_type) 1524 *p_type = ipipt; 1525 return true; 1526 } 1527 } 1528 return false; 1529 } 1530 1531 static bool mlxsw_sp_netdev_is_ipip_ol(const struct mlxsw_sp *mlxsw_sp, 1532 const struct net_device *dev) 1533 { 1534 return mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL); 1535 } 1536 1537 static struct mlxsw_sp_ipip_entry * 1538 mlxsw_sp_ipip_entry_find_by_ol_dev(struct mlxsw_sp *mlxsw_sp, 1539 const struct net_device *ol_dev) 1540 { 1541 struct mlxsw_sp_ipip_entry *ipip_entry; 1542 1543 list_for_each_entry(ipip_entry, &mlxsw_sp->router->ipip_list, 1544 ipip_list_node) 1545 if (ipip_entry->ol_dev == ol_dev) 1546 return ipip_entry; 1547 1548 return NULL; 1549 } 1550 1551 static struct mlxsw_sp_ipip_entry * 1552 mlxsw_sp_ipip_entry_find_by_ul_dev(const struct mlxsw_sp *mlxsw_sp, 1553 const struct net_device *ul_dev, 1554 struct mlxsw_sp_ipip_entry *start) 1555 { 1556 struct mlxsw_sp_ipip_entry *ipip_entry; 1557 1558 ipip_entry = list_prepare_entry(start, &mlxsw_sp->router->ipip_list, 1559 ipip_list_node); 1560 list_for_each_entry_continue(ipip_entry, &mlxsw_sp->router->ipip_list, 1561 ipip_list_node) { 1562 struct net_device *ol_dev = ipip_entry->ol_dev; 1563 struct net_device *ipip_ul_dev; 1564 1565 rcu_read_lock(); 1566 ipip_ul_dev = mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev); 1567 rcu_read_unlock(); 1568 1569 if (ipip_ul_dev == ul_dev) 1570 return ipip_entry; 1571 } 1572 1573 return NULL; 1574 } 1575 1576 static bool mlxsw_sp_netdev_is_ipip_ul(struct mlxsw_sp *mlxsw_sp, 1577 const struct net_device *dev) 1578 { 1579 return mlxsw_sp_ipip_entry_find_by_ul_dev(mlxsw_sp, dev, NULL); 1580 } 1581 1582 static bool mlxsw_sp_netdevice_ipip_can_offload(struct mlxsw_sp *mlxsw_sp, 1583 const struct net_device *ol_dev, 1584 enum mlxsw_sp_ipip_type ipipt) 1585 { 1586 const struct mlxsw_sp_ipip_ops *ops 1587 = mlxsw_sp->router->ipip_ops_arr[ipipt]; 1588 1589 return ops->can_offload(mlxsw_sp, ol_dev); 1590 } 1591 1592 static int mlxsw_sp_netdevice_ipip_ol_reg_event(struct mlxsw_sp *mlxsw_sp, 1593 struct net_device *ol_dev) 1594 { 1595 enum mlxsw_sp_ipip_type ipipt = MLXSW_SP_IPIP_TYPE_MAX; 1596 struct mlxsw_sp_ipip_entry *ipip_entry; 1597 enum mlxsw_sp_l3proto ul_proto; 1598 union mlxsw_sp_l3addr saddr; 1599 u32 ul_tb_id; 1600 1601 mlxsw_sp_netdev_ipip_type(mlxsw_sp, ol_dev, &ipipt); 1602 if (mlxsw_sp_netdevice_ipip_can_offload(mlxsw_sp, ol_dev, ipipt)) { 1603 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ol_dev); 1604 ul_proto = mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto; 1605 saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ol_dev); 1606 if (!mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp, ul_proto, 1607 saddr, ul_tb_id, 1608 NULL)) { 1609 ipip_entry = mlxsw_sp_ipip_entry_create(mlxsw_sp, ipipt, 1610 ol_dev); 1611 if (IS_ERR(ipip_entry)) 1612 return PTR_ERR(ipip_entry); 1613 } 1614 } 1615 1616 return 0; 1617 } 1618 1619 static void mlxsw_sp_netdevice_ipip_ol_unreg_event(struct mlxsw_sp *mlxsw_sp, 1620 struct net_device *ol_dev) 1621 { 1622 struct mlxsw_sp_ipip_entry *ipip_entry; 1623 1624 ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); 1625 if (ipip_entry) 1626 mlxsw_sp_ipip_entry_destroy(mlxsw_sp, ipip_entry); 1627 } 1628 1629 static void 1630 mlxsw_sp_ipip_entry_ol_up_event(struct mlxsw_sp *mlxsw_sp, 1631 struct mlxsw_sp_ipip_entry *ipip_entry) 1632 { 1633 struct mlxsw_sp_fib_entry *decap_fib_entry; 1634 1635 decap_fib_entry = mlxsw_sp_ipip_entry_find_decap(mlxsw_sp, ipip_entry); 1636 if (decap_fib_entry) 1637 mlxsw_sp_ipip_entry_promote_decap(mlxsw_sp, ipip_entry, 1638 decap_fib_entry); 1639 } 1640 1641 static int 1642 mlxsw_sp_rif_ipip_lb_op(struct mlxsw_sp_rif_ipip_lb *lb_rif, u16 ul_vr_id, 1643 u16 ul_rif_id, bool enable) 1644 { 1645 struct mlxsw_sp_rif_ipip_lb_config lb_cf = lb_rif->lb_config; 1646 struct net_device *dev = mlxsw_sp_rif_dev(&lb_rif->common); 1647 enum mlxsw_reg_ritr_loopback_ipip_options ipip_options; 1648 struct mlxsw_sp_rif *rif = &lb_rif->common; 1649 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 1650 char ritr_pl[MLXSW_REG_RITR_LEN]; 1651 struct in6_addr *saddr6; 1652 u32 saddr4; 1653 1654 ipip_options = MLXSW_REG_RITR_LOOPBACK_IPIP_OPTIONS_GRE_KEY_PRESET; 1655 switch (lb_cf.ul_protocol) { 1656 case MLXSW_SP_L3_PROTO_IPV4: 1657 saddr4 = be32_to_cpu(lb_cf.saddr.addr4); 1658 mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF, 1659 rif->rif_index, rif->vr_id, dev->mtu); 1660 mlxsw_reg_ritr_loopback_ipip4_pack(ritr_pl, lb_cf.lb_ipipt, 1661 ipip_options, ul_vr_id, 1662 ul_rif_id, saddr4, 1663 lb_cf.okey); 1664 break; 1665 1666 case MLXSW_SP_L3_PROTO_IPV6: 1667 saddr6 = &lb_cf.saddr.addr6; 1668 mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF, 1669 rif->rif_index, rif->vr_id, dev->mtu); 1670 mlxsw_reg_ritr_loopback_ipip6_pack(ritr_pl, lb_cf.lb_ipipt, 1671 ipip_options, ul_vr_id, 1672 ul_rif_id, saddr6, 1673 lb_cf.okey); 1674 break; 1675 } 1676 1677 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 1678 } 1679 1680 static int mlxsw_sp_netdevice_ipip_ol_update_mtu(struct mlxsw_sp *mlxsw_sp, 1681 struct net_device *ol_dev) 1682 { 1683 struct mlxsw_sp_ipip_entry *ipip_entry; 1684 struct mlxsw_sp_rif_ipip_lb *lb_rif; 1685 int err = 0; 1686 1687 ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); 1688 if (ipip_entry) { 1689 lb_rif = ipip_entry->ol_lb; 1690 err = mlxsw_sp_rif_ipip_lb_op(lb_rif, lb_rif->ul_vr_id, 1691 lb_rif->ul_rif_id, true); 1692 if (err) 1693 goto out; 1694 lb_rif->common.mtu = ol_dev->mtu; 1695 } 1696 1697 out: 1698 return err; 1699 } 1700 1701 static void mlxsw_sp_netdevice_ipip_ol_up_event(struct mlxsw_sp *mlxsw_sp, 1702 struct net_device *ol_dev) 1703 { 1704 struct mlxsw_sp_ipip_entry *ipip_entry; 1705 1706 ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); 1707 if (ipip_entry) 1708 mlxsw_sp_ipip_entry_ol_up_event(mlxsw_sp, ipip_entry); 1709 } 1710 1711 static void 1712 mlxsw_sp_ipip_entry_ol_down_event(struct mlxsw_sp *mlxsw_sp, 1713 struct mlxsw_sp_ipip_entry *ipip_entry) 1714 { 1715 if (ipip_entry->decap_fib_entry) 1716 mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry); 1717 } 1718 1719 static void mlxsw_sp_netdevice_ipip_ol_down_event(struct mlxsw_sp *mlxsw_sp, 1720 struct net_device *ol_dev) 1721 { 1722 struct mlxsw_sp_ipip_entry *ipip_entry; 1723 1724 ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); 1725 if (ipip_entry) 1726 mlxsw_sp_ipip_entry_ol_down_event(mlxsw_sp, ipip_entry); 1727 } 1728 1729 static void mlxsw_sp_nexthop_rif_update(struct mlxsw_sp *mlxsw_sp, 1730 struct mlxsw_sp_rif *rif); 1731 1732 static void mlxsw_sp_rif_migrate_destroy(struct mlxsw_sp *mlxsw_sp, 1733 struct mlxsw_sp_rif *old_rif, 1734 struct mlxsw_sp_rif *new_rif, 1735 bool migrate_nhs) 1736 { 1737 struct mlxsw_sp_crif *crif = old_rif->crif; 1738 struct mlxsw_sp_crif mock_crif = {}; 1739 1740 if (migrate_nhs) 1741 mlxsw_sp_nexthop_rif_update(mlxsw_sp, new_rif); 1742 1743 /* Plant a mock CRIF so that destroying the old RIF doesn't unoffload 1744 * our nexthops and IPIP tunnels, and doesn't sever the crif->rif link. 1745 */ 1746 mlxsw_sp_crif_init(&mock_crif, crif->key.dev); 1747 old_rif->crif = &mock_crif; 1748 mock_crif.rif = old_rif; 1749 mlxsw_sp_rif_destroy(old_rif); 1750 } 1751 1752 static int 1753 mlxsw_sp_ipip_entry_ol_lb_update(struct mlxsw_sp *mlxsw_sp, 1754 struct mlxsw_sp_ipip_entry *ipip_entry, 1755 bool keep_encap, 1756 struct netlink_ext_ack *extack) 1757 { 1758 struct mlxsw_sp_rif_ipip_lb *old_lb_rif = ipip_entry->ol_lb; 1759 struct mlxsw_sp_rif_ipip_lb *new_lb_rif; 1760 1761 new_lb_rif = mlxsw_sp_ipip_ol_ipip_lb_create(mlxsw_sp, 1762 ipip_entry->ipipt, 1763 ipip_entry->ol_dev, 1764 extack); 1765 if (IS_ERR(new_lb_rif)) 1766 return PTR_ERR(new_lb_rif); 1767 ipip_entry->ol_lb = new_lb_rif; 1768 1769 mlxsw_sp_rif_migrate_destroy(mlxsw_sp, &old_lb_rif->common, 1770 &new_lb_rif->common, keep_encap); 1771 return 0; 1772 } 1773 1774 /** 1775 * __mlxsw_sp_ipip_entry_update_tunnel - Update offload related to IPIP entry. 1776 * @mlxsw_sp: mlxsw_sp. 1777 * @ipip_entry: IPIP entry. 1778 * @recreate_loopback: Recreates the associated loopback RIF. 1779 * @keep_encap: Updates next hops that use the tunnel netdevice. This is only 1780 * relevant when recreate_loopback is true. 1781 * @update_nexthops: Updates next hops, keeping the current loopback RIF. This 1782 * is only relevant when recreate_loopback is false. 1783 * @extack: extack. 1784 * 1785 * Return: Non-zero value on failure. 1786 */ 1787 int __mlxsw_sp_ipip_entry_update_tunnel(struct mlxsw_sp *mlxsw_sp, 1788 struct mlxsw_sp_ipip_entry *ipip_entry, 1789 bool recreate_loopback, 1790 bool keep_encap, 1791 bool update_nexthops, 1792 struct netlink_ext_ack *extack) 1793 { 1794 int err; 1795 1796 /* RIFs can't be edited, so to update loopback, we need to destroy and 1797 * recreate it. That creates a window of opportunity where RALUE and 1798 * RATR registers end up referencing a RIF that's already gone. RATRs 1799 * are handled in mlxsw_sp_ipip_entry_ol_lb_update(), and to take care 1800 * of RALUE, demote the decap route back. 1801 */ 1802 if (ipip_entry->decap_fib_entry) 1803 mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry); 1804 1805 if (recreate_loopback) { 1806 err = mlxsw_sp_ipip_entry_ol_lb_update(mlxsw_sp, ipip_entry, 1807 keep_encap, extack); 1808 if (err) 1809 return err; 1810 } else if (update_nexthops) { 1811 mlxsw_sp_nexthop_rif_update(mlxsw_sp, 1812 &ipip_entry->ol_lb->common); 1813 } 1814 1815 if (ipip_entry->ol_dev->flags & IFF_UP) 1816 mlxsw_sp_ipip_entry_ol_up_event(mlxsw_sp, ipip_entry); 1817 1818 return 0; 1819 } 1820 1821 static int mlxsw_sp_netdevice_ipip_ol_vrf_event(struct mlxsw_sp *mlxsw_sp, 1822 struct net_device *ol_dev, 1823 struct netlink_ext_ack *extack) 1824 { 1825 struct mlxsw_sp_ipip_entry *ipip_entry = 1826 mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); 1827 1828 if (!ipip_entry) 1829 return 0; 1830 1831 return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry, 1832 true, false, false, extack); 1833 } 1834 1835 static int 1836 mlxsw_sp_netdevice_ipip_ul_vrf_event(struct mlxsw_sp *mlxsw_sp, 1837 struct mlxsw_sp_ipip_entry *ipip_entry, 1838 struct net_device *ul_dev, 1839 bool *demote_this, 1840 struct netlink_ext_ack *extack) 1841 { 1842 u32 ul_tb_id = l3mdev_fib_table(ul_dev) ? : RT_TABLE_MAIN; 1843 enum mlxsw_sp_l3proto ul_proto; 1844 union mlxsw_sp_l3addr saddr; 1845 1846 /* Moving underlay to a different VRF might cause local address 1847 * conflict, and the conflicting tunnels need to be demoted. 1848 */ 1849 ul_proto = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]->ul_proto; 1850 saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ipip_entry->ol_dev); 1851 if (mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp, ul_proto, 1852 saddr, ul_tb_id, 1853 ipip_entry)) { 1854 *demote_this = true; 1855 return 0; 1856 } 1857 1858 return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry, 1859 true, true, false, extack); 1860 } 1861 1862 static int 1863 mlxsw_sp_netdevice_ipip_ul_up_event(struct mlxsw_sp *mlxsw_sp, 1864 struct mlxsw_sp_ipip_entry *ipip_entry, 1865 struct net_device *ul_dev) 1866 { 1867 return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry, 1868 false, false, true, NULL); 1869 } 1870 1871 static int 1872 mlxsw_sp_netdevice_ipip_ul_down_event(struct mlxsw_sp *mlxsw_sp, 1873 struct mlxsw_sp_ipip_entry *ipip_entry, 1874 struct net_device *ul_dev) 1875 { 1876 /* A down underlay device causes encapsulated packets to not be 1877 * forwarded, but decap still works. So refresh next hops without 1878 * touching anything else. 1879 */ 1880 return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry, 1881 false, false, true, NULL); 1882 } 1883 1884 static int 1885 mlxsw_sp_netdevice_ipip_ol_change_event(struct mlxsw_sp *mlxsw_sp, 1886 struct net_device *ol_dev, 1887 struct netlink_ext_ack *extack) 1888 { 1889 const struct mlxsw_sp_ipip_ops *ipip_ops; 1890 struct mlxsw_sp_ipip_entry *ipip_entry; 1891 int err; 1892 1893 ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev); 1894 if (!ipip_entry) 1895 /* A change might make a tunnel eligible for offloading, but 1896 * that is currently not implemented. What falls to slow path 1897 * stays there. 1898 */ 1899 return 0; 1900 1901 /* A change might make a tunnel not eligible for offloading. */ 1902 if (!mlxsw_sp_netdevice_ipip_can_offload(mlxsw_sp, ol_dev, 1903 ipip_entry->ipipt)) { 1904 mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry); 1905 return 0; 1906 } 1907 1908 ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; 1909 err = ipip_ops->ol_netdev_change(mlxsw_sp, ipip_entry, extack); 1910 return err; 1911 } 1912 1913 void mlxsw_sp_ipip_entry_demote_tunnel(struct mlxsw_sp *mlxsw_sp, 1914 struct mlxsw_sp_ipip_entry *ipip_entry) 1915 { 1916 struct net_device *ol_dev = ipip_entry->ol_dev; 1917 1918 if (ol_dev->flags & IFF_UP) 1919 mlxsw_sp_ipip_entry_ol_down_event(mlxsw_sp, ipip_entry); 1920 mlxsw_sp_ipip_entry_destroy(mlxsw_sp, ipip_entry); 1921 } 1922 1923 /* The configuration where several tunnels have the same local address in the 1924 * same underlay table needs special treatment in the HW. That is currently not 1925 * implemented in the driver. This function finds and demotes the first tunnel 1926 * with a given source address, except the one passed in the argument 1927 * `except'. 1928 */ 1929 bool 1930 mlxsw_sp_ipip_demote_tunnel_by_saddr(struct mlxsw_sp *mlxsw_sp, 1931 enum mlxsw_sp_l3proto ul_proto, 1932 union mlxsw_sp_l3addr saddr, 1933 u32 ul_tb_id, 1934 const struct mlxsw_sp_ipip_entry *except) 1935 { 1936 struct mlxsw_sp_ipip_entry *ipip_entry, *tmp; 1937 1938 list_for_each_entry_safe(ipip_entry, tmp, &mlxsw_sp->router->ipip_list, 1939 ipip_list_node) { 1940 if (ipip_entry != except && 1941 mlxsw_sp_ipip_entry_saddr_matches(mlxsw_sp, ul_proto, saddr, 1942 ul_tb_id, ipip_entry)) { 1943 mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry); 1944 return true; 1945 } 1946 } 1947 1948 return false; 1949 } 1950 1951 static void mlxsw_sp_ipip_demote_tunnel_by_ul_netdev(struct mlxsw_sp *mlxsw_sp, 1952 struct net_device *ul_dev) 1953 { 1954 struct mlxsw_sp_ipip_entry *ipip_entry, *tmp; 1955 1956 list_for_each_entry_safe(ipip_entry, tmp, &mlxsw_sp->router->ipip_list, 1957 ipip_list_node) { 1958 struct net_device *ol_dev = ipip_entry->ol_dev; 1959 struct net_device *ipip_ul_dev; 1960 1961 rcu_read_lock(); 1962 ipip_ul_dev = mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev); 1963 rcu_read_unlock(); 1964 if (ipip_ul_dev == ul_dev) 1965 mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry); 1966 } 1967 } 1968 1969 static int mlxsw_sp_netdevice_ipip_ol_event(struct mlxsw_sp *mlxsw_sp, 1970 struct net_device *ol_dev, 1971 unsigned long event, 1972 struct netdev_notifier_info *info) 1973 { 1974 struct netdev_notifier_changeupper_info *chup; 1975 struct netlink_ext_ack *extack; 1976 int err = 0; 1977 1978 switch (event) { 1979 case NETDEV_REGISTER: 1980 err = mlxsw_sp_netdevice_ipip_ol_reg_event(mlxsw_sp, ol_dev); 1981 break; 1982 case NETDEV_UNREGISTER: 1983 mlxsw_sp_netdevice_ipip_ol_unreg_event(mlxsw_sp, ol_dev); 1984 break; 1985 case NETDEV_UP: 1986 mlxsw_sp_netdevice_ipip_ol_up_event(mlxsw_sp, ol_dev); 1987 break; 1988 case NETDEV_DOWN: 1989 mlxsw_sp_netdevice_ipip_ol_down_event(mlxsw_sp, ol_dev); 1990 break; 1991 case NETDEV_CHANGEUPPER: 1992 chup = container_of(info, typeof(*chup), info); 1993 extack = info->extack; 1994 if (netif_is_l3_master(chup->upper_dev)) 1995 err = mlxsw_sp_netdevice_ipip_ol_vrf_event(mlxsw_sp, 1996 ol_dev, 1997 extack); 1998 break; 1999 case NETDEV_CHANGE: 2000 extack = info->extack; 2001 err = mlxsw_sp_netdevice_ipip_ol_change_event(mlxsw_sp, 2002 ol_dev, extack); 2003 break; 2004 case NETDEV_CHANGEMTU: 2005 err = mlxsw_sp_netdevice_ipip_ol_update_mtu(mlxsw_sp, ol_dev); 2006 break; 2007 } 2008 return err; 2009 } 2010 2011 static int 2012 __mlxsw_sp_netdevice_ipip_ul_event(struct mlxsw_sp *mlxsw_sp, 2013 struct mlxsw_sp_ipip_entry *ipip_entry, 2014 struct net_device *ul_dev, 2015 bool *demote_this, 2016 unsigned long event, 2017 struct netdev_notifier_info *info) 2018 { 2019 struct netdev_notifier_changeupper_info *chup; 2020 struct netlink_ext_ack *extack; 2021 2022 switch (event) { 2023 case NETDEV_CHANGEUPPER: 2024 chup = container_of(info, typeof(*chup), info); 2025 extack = info->extack; 2026 if (netif_is_l3_master(chup->upper_dev)) 2027 return mlxsw_sp_netdevice_ipip_ul_vrf_event(mlxsw_sp, 2028 ipip_entry, 2029 ul_dev, 2030 demote_this, 2031 extack); 2032 break; 2033 2034 case NETDEV_UP: 2035 return mlxsw_sp_netdevice_ipip_ul_up_event(mlxsw_sp, ipip_entry, 2036 ul_dev); 2037 case NETDEV_DOWN: 2038 return mlxsw_sp_netdevice_ipip_ul_down_event(mlxsw_sp, 2039 ipip_entry, 2040 ul_dev); 2041 } 2042 return 0; 2043 } 2044 2045 static int 2046 mlxsw_sp_netdevice_ipip_ul_event(struct mlxsw_sp *mlxsw_sp, 2047 struct net_device *ul_dev, 2048 unsigned long event, 2049 struct netdev_notifier_info *info) 2050 { 2051 struct mlxsw_sp_ipip_entry *ipip_entry = NULL; 2052 int err; 2053 2054 while ((ipip_entry = mlxsw_sp_ipip_entry_find_by_ul_dev(mlxsw_sp, 2055 ul_dev, 2056 ipip_entry))) { 2057 struct mlxsw_sp_ipip_entry *prev; 2058 bool demote_this = false; 2059 2060 err = __mlxsw_sp_netdevice_ipip_ul_event(mlxsw_sp, ipip_entry, 2061 ul_dev, &demote_this, 2062 event, info); 2063 if (err) { 2064 mlxsw_sp_ipip_demote_tunnel_by_ul_netdev(mlxsw_sp, 2065 ul_dev); 2066 return err; 2067 } 2068 2069 if (demote_this) { 2070 if (list_is_first(&ipip_entry->ipip_list_node, 2071 &mlxsw_sp->router->ipip_list)) 2072 prev = NULL; 2073 else 2074 /* This can't be cached from previous iteration, 2075 * because that entry could be gone now. 2076 */ 2077 prev = list_prev_entry(ipip_entry, 2078 ipip_list_node); 2079 mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry); 2080 ipip_entry = prev; 2081 } 2082 } 2083 2084 return 0; 2085 } 2086 2087 int mlxsw_sp_router_nve_promote_decap(struct mlxsw_sp *mlxsw_sp, u32 ul_tb_id, 2088 enum mlxsw_sp_l3proto ul_proto, 2089 const union mlxsw_sp_l3addr *ul_sip, 2090 u32 tunnel_index) 2091 { 2092 enum mlxsw_sp_fib_entry_type type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; 2093 struct mlxsw_sp_router *router = mlxsw_sp->router; 2094 struct mlxsw_sp_fib_entry *fib_entry; 2095 int err = 0; 2096 2097 mutex_lock(&mlxsw_sp->router->lock); 2098 2099 if (WARN_ON_ONCE(router->nve_decap_config.valid)) { 2100 err = -EINVAL; 2101 goto out; 2102 } 2103 2104 router->nve_decap_config.ul_tb_id = ul_tb_id; 2105 router->nve_decap_config.tunnel_index = tunnel_index; 2106 router->nve_decap_config.ul_proto = ul_proto; 2107 router->nve_decap_config.ul_sip = *ul_sip; 2108 router->nve_decap_config.valid = true; 2109 2110 /* It is valid to create a tunnel with a local IP and only later 2111 * assign this IP address to a local interface 2112 */ 2113 fib_entry = mlxsw_sp_router_ip2me_fib_entry_find(mlxsw_sp, ul_tb_id, 2114 ul_proto, ul_sip, 2115 type); 2116 if (!fib_entry) 2117 goto out; 2118 2119 fib_entry->decap.tunnel_index = tunnel_index; 2120 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP; 2121 2122 err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); 2123 if (err) 2124 goto err_fib_entry_update; 2125 2126 goto out; 2127 2128 err_fib_entry_update: 2129 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; 2130 mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); 2131 out: 2132 mutex_unlock(&mlxsw_sp->router->lock); 2133 return err; 2134 } 2135 2136 void mlxsw_sp_router_nve_demote_decap(struct mlxsw_sp *mlxsw_sp, u32 ul_tb_id, 2137 enum mlxsw_sp_l3proto ul_proto, 2138 const union mlxsw_sp_l3addr *ul_sip) 2139 { 2140 enum mlxsw_sp_fib_entry_type type = MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP; 2141 struct mlxsw_sp_router *router = mlxsw_sp->router; 2142 struct mlxsw_sp_fib_entry *fib_entry; 2143 2144 mutex_lock(&mlxsw_sp->router->lock); 2145 2146 if (WARN_ON_ONCE(!router->nve_decap_config.valid)) 2147 goto out; 2148 2149 router->nve_decap_config.valid = false; 2150 2151 fib_entry = mlxsw_sp_router_ip2me_fib_entry_find(mlxsw_sp, ul_tb_id, 2152 ul_proto, ul_sip, 2153 type); 2154 if (!fib_entry) 2155 goto out; 2156 2157 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; 2158 mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); 2159 out: 2160 mutex_unlock(&mlxsw_sp->router->lock); 2161 } 2162 2163 static bool mlxsw_sp_router_nve_is_decap(struct mlxsw_sp *mlxsw_sp, 2164 u32 ul_tb_id, 2165 enum mlxsw_sp_l3proto ul_proto, 2166 const union mlxsw_sp_l3addr *ul_sip) 2167 { 2168 struct mlxsw_sp_router *router = mlxsw_sp->router; 2169 2170 return router->nve_decap_config.valid && 2171 router->nve_decap_config.ul_tb_id == ul_tb_id && 2172 router->nve_decap_config.ul_proto == ul_proto && 2173 !memcmp(&router->nve_decap_config.ul_sip, ul_sip, 2174 sizeof(*ul_sip)); 2175 } 2176 2177 struct mlxsw_sp_neigh_key { 2178 struct neighbour *n; 2179 }; 2180 2181 struct mlxsw_sp_neigh_entry { 2182 struct list_head rif_list_node; 2183 struct rhash_head ht_node; 2184 struct mlxsw_sp_neigh_key key; 2185 u16 rif; 2186 bool connected; 2187 unsigned char ha[ETH_ALEN]; 2188 struct list_head nexthop_list; /* list of nexthops using 2189 * this neigh entry 2190 */ 2191 struct list_head nexthop_neighs_list_node; 2192 unsigned int counter_index; 2193 bool counter_valid; 2194 }; 2195 2196 static const struct rhashtable_params mlxsw_sp_neigh_ht_params = { 2197 .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key), 2198 .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node), 2199 .key_len = sizeof(struct mlxsw_sp_neigh_key), 2200 }; 2201 2202 struct mlxsw_sp_neigh_entry * 2203 mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif, 2204 struct mlxsw_sp_neigh_entry *neigh_entry) 2205 { 2206 if (!neigh_entry) { 2207 if (list_empty(&rif->neigh_list)) 2208 return NULL; 2209 else 2210 return list_first_entry(&rif->neigh_list, 2211 typeof(*neigh_entry), 2212 rif_list_node); 2213 } 2214 if (list_is_last(&neigh_entry->rif_list_node, &rif->neigh_list)) 2215 return NULL; 2216 return list_next_entry(neigh_entry, rif_list_node); 2217 } 2218 2219 int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry) 2220 { 2221 return neigh_entry->key.n->tbl->family; 2222 } 2223 2224 unsigned char * 2225 mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry) 2226 { 2227 return neigh_entry->ha; 2228 } 2229 2230 u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry) 2231 { 2232 struct neighbour *n; 2233 2234 n = neigh_entry->key.n; 2235 return ntohl(*((__be32 *) n->primary_key)); 2236 } 2237 2238 struct in6_addr * 2239 mlxsw_sp_neigh6_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry) 2240 { 2241 struct neighbour *n; 2242 2243 n = neigh_entry->key.n; 2244 return (struct in6_addr *) &n->primary_key; 2245 } 2246 2247 int mlxsw_sp_neigh_counter_get(struct mlxsw_sp *mlxsw_sp, 2248 struct mlxsw_sp_neigh_entry *neigh_entry, 2249 u64 *p_counter) 2250 { 2251 if (!neigh_entry->counter_valid) 2252 return -EINVAL; 2253 2254 return mlxsw_sp_flow_counter_get(mlxsw_sp, neigh_entry->counter_index, 2255 false, p_counter, NULL); 2256 } 2257 2258 static struct mlxsw_sp_neigh_entry * 2259 mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n, 2260 u16 rif) 2261 { 2262 struct mlxsw_sp_neigh_entry *neigh_entry; 2263 2264 neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL); 2265 if (!neigh_entry) 2266 return NULL; 2267 2268 neigh_entry->key.n = n; 2269 neigh_entry->rif = rif; 2270 INIT_LIST_HEAD(&neigh_entry->nexthop_list); 2271 2272 return neigh_entry; 2273 } 2274 2275 static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry) 2276 { 2277 kfree(neigh_entry); 2278 } 2279 2280 static int 2281 mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp, 2282 struct mlxsw_sp_neigh_entry *neigh_entry) 2283 { 2284 return rhashtable_insert_fast(&mlxsw_sp->router->neigh_ht, 2285 &neigh_entry->ht_node, 2286 mlxsw_sp_neigh_ht_params); 2287 } 2288 2289 static void 2290 mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp, 2291 struct mlxsw_sp_neigh_entry *neigh_entry) 2292 { 2293 rhashtable_remove_fast(&mlxsw_sp->router->neigh_ht, 2294 &neigh_entry->ht_node, 2295 mlxsw_sp_neigh_ht_params); 2296 } 2297 2298 static bool 2299 mlxsw_sp_neigh_counter_should_alloc(struct mlxsw_sp *mlxsw_sp, 2300 struct mlxsw_sp_neigh_entry *neigh_entry) 2301 { 2302 struct devlink *devlink; 2303 const char *table_name; 2304 2305 switch (mlxsw_sp_neigh_entry_type(neigh_entry)) { 2306 case AF_INET: 2307 table_name = MLXSW_SP_DPIPE_TABLE_NAME_HOST4; 2308 break; 2309 case AF_INET6: 2310 table_name = MLXSW_SP_DPIPE_TABLE_NAME_HOST6; 2311 break; 2312 default: 2313 WARN_ON(1); 2314 return false; 2315 } 2316 2317 devlink = priv_to_devlink(mlxsw_sp->core); 2318 return devlink_dpipe_table_counter_enabled(devlink, table_name); 2319 } 2320 2321 static void 2322 mlxsw_sp_neigh_counter_alloc(struct mlxsw_sp *mlxsw_sp, 2323 struct mlxsw_sp_neigh_entry *neigh_entry) 2324 { 2325 if (!mlxsw_sp_neigh_counter_should_alloc(mlxsw_sp, neigh_entry)) 2326 return; 2327 2328 if (mlxsw_sp_flow_counter_alloc(mlxsw_sp, &neigh_entry->counter_index)) 2329 return; 2330 2331 neigh_entry->counter_valid = true; 2332 } 2333 2334 static void 2335 mlxsw_sp_neigh_counter_free(struct mlxsw_sp *mlxsw_sp, 2336 struct mlxsw_sp_neigh_entry *neigh_entry) 2337 { 2338 if (!neigh_entry->counter_valid) 2339 return; 2340 mlxsw_sp_flow_counter_free(mlxsw_sp, 2341 neigh_entry->counter_index); 2342 neigh_entry->counter_valid = false; 2343 } 2344 2345 static struct mlxsw_sp_neigh_entry * 2346 mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) 2347 { 2348 struct mlxsw_sp_neigh_entry *neigh_entry; 2349 struct mlxsw_sp_rif *rif; 2350 int err; 2351 2352 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); 2353 if (!rif) 2354 return ERR_PTR(-EINVAL); 2355 2356 neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index); 2357 if (!neigh_entry) 2358 return ERR_PTR(-ENOMEM); 2359 2360 err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); 2361 if (err) 2362 goto err_neigh_entry_insert; 2363 2364 mlxsw_sp_neigh_counter_alloc(mlxsw_sp, neigh_entry); 2365 atomic_inc(&mlxsw_sp->router->neighs_update.neigh_count); 2366 list_add(&neigh_entry->rif_list_node, &rif->neigh_list); 2367 2368 return neigh_entry; 2369 2370 err_neigh_entry_insert: 2371 mlxsw_sp_neigh_entry_free(neigh_entry); 2372 return ERR_PTR(err); 2373 } 2374 2375 static void 2376 mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp, 2377 struct mlxsw_sp_neigh_entry *neigh_entry) 2378 { 2379 list_del(&neigh_entry->rif_list_node); 2380 atomic_dec(&mlxsw_sp->router->neighs_update.neigh_count); 2381 mlxsw_sp_neigh_counter_free(mlxsw_sp, neigh_entry); 2382 mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); 2383 mlxsw_sp_neigh_entry_free(neigh_entry); 2384 } 2385 2386 static struct mlxsw_sp_neigh_entry * 2387 mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) 2388 { 2389 struct mlxsw_sp_neigh_key key; 2390 2391 key.n = n; 2392 return rhashtable_lookup_fast(&mlxsw_sp->router->neigh_ht, 2393 &key, mlxsw_sp_neigh_ht_params); 2394 } 2395 2396 static void 2397 mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp) 2398 { 2399 unsigned long interval; 2400 2401 #if IS_ENABLED(CONFIG_IPV6) 2402 interval = min_t(unsigned long, 2403 NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME), 2404 NEIGH_VAR(&nd_tbl.parms, DELAY_PROBE_TIME)); 2405 #else 2406 interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME); 2407 #endif 2408 mlxsw_sp->router->neighs_update.interval = jiffies_to_msecs(interval); 2409 } 2410 2411 static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp, 2412 char *rauhtd_pl, 2413 int ent_index) 2414 { 2415 u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); 2416 struct net_device *dev; 2417 struct neighbour *n; 2418 __be32 dipn; 2419 u32 dip; 2420 u16 rif; 2421 2422 mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip); 2423 2424 if (WARN_ON_ONCE(rif >= max_rifs)) 2425 return; 2426 if (!mlxsw_sp->router->rifs[rif]) { 2427 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); 2428 return; 2429 } 2430 2431 dipn = htonl(dip); 2432 dev = mlxsw_sp_rif_dev(mlxsw_sp->router->rifs[rif]); 2433 n = neigh_lookup(&arp_tbl, &dipn, dev); 2434 if (!n) 2435 return; 2436 2437 netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip); 2438 neigh_event_send(n, NULL); 2439 neigh_release(n); 2440 } 2441 2442 #if IS_ENABLED(CONFIG_IPV6) 2443 static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp, 2444 char *rauhtd_pl, 2445 int rec_index) 2446 { 2447 struct net_device *dev; 2448 struct neighbour *n; 2449 struct in6_addr dip; 2450 u16 rif; 2451 2452 mlxsw_reg_rauhtd_ent_ipv6_unpack(rauhtd_pl, rec_index, &rif, 2453 (char *) &dip); 2454 2455 if (!mlxsw_sp->router->rifs[rif]) { 2456 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); 2457 return; 2458 } 2459 2460 dev = mlxsw_sp_rif_dev(mlxsw_sp->router->rifs[rif]); 2461 n = neigh_lookup(&nd_tbl, &dip, dev); 2462 if (!n) 2463 return; 2464 2465 netdev_dbg(dev, "Updating neighbour with IP=%pI6c\n", &dip); 2466 neigh_event_send(n, NULL); 2467 neigh_release(n); 2468 } 2469 #else 2470 static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp, 2471 char *rauhtd_pl, 2472 int rec_index) 2473 { 2474 } 2475 #endif 2476 2477 static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp, 2478 char *rauhtd_pl, 2479 int rec_index) 2480 { 2481 u8 num_entries; 2482 int i; 2483 2484 num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, 2485 rec_index); 2486 /* Hardware starts counting at 0, so add 1. */ 2487 num_entries++; 2488 2489 /* Each record consists of several neighbour entries. */ 2490 for (i = 0; i < num_entries; i++) { 2491 int ent_index; 2492 2493 ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i; 2494 mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl, 2495 ent_index); 2496 } 2497 2498 } 2499 2500 static void mlxsw_sp_router_neigh_rec_ipv6_process(struct mlxsw_sp *mlxsw_sp, 2501 char *rauhtd_pl, 2502 int rec_index) 2503 { 2504 /* One record contains one entry. */ 2505 mlxsw_sp_router_neigh_ent_ipv6_process(mlxsw_sp, rauhtd_pl, 2506 rec_index); 2507 } 2508 2509 static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp, 2510 char *rauhtd_pl, int rec_index) 2511 { 2512 switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) { 2513 case MLXSW_REG_RAUHTD_TYPE_IPV4: 2514 mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl, 2515 rec_index); 2516 break; 2517 case MLXSW_REG_RAUHTD_TYPE_IPV6: 2518 mlxsw_sp_router_neigh_rec_ipv6_process(mlxsw_sp, rauhtd_pl, 2519 rec_index); 2520 break; 2521 } 2522 } 2523 2524 static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl) 2525 { 2526 u8 num_rec, last_rec_index, num_entries; 2527 2528 num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); 2529 last_rec_index = num_rec - 1; 2530 2531 if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM) 2532 return false; 2533 if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) == 2534 MLXSW_REG_RAUHTD_TYPE_IPV6) 2535 return true; 2536 2537 num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, 2538 last_rec_index); 2539 if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC) 2540 return true; 2541 return false; 2542 } 2543 2544 static int 2545 __mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp, 2546 char *rauhtd_pl, 2547 enum mlxsw_reg_rauhtd_type type) 2548 { 2549 int i, num_rec; 2550 int err; 2551 2552 /* Ensure the RIF we read from the device does not change mid-dump. */ 2553 mutex_lock(&mlxsw_sp->router->lock); 2554 do { 2555 mlxsw_reg_rauhtd_pack(rauhtd_pl, type); 2556 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd), 2557 rauhtd_pl); 2558 if (err) { 2559 dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour table\n"); 2560 break; 2561 } 2562 num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); 2563 for (i = 0; i < num_rec; i++) 2564 mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl, 2565 i); 2566 } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl)); 2567 mutex_unlock(&mlxsw_sp->router->lock); 2568 2569 return err; 2570 } 2571 2572 static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp) 2573 { 2574 enum mlxsw_reg_rauhtd_type type; 2575 char *rauhtd_pl; 2576 int err; 2577 2578 if (!atomic_read(&mlxsw_sp->router->neighs_update.neigh_count)) 2579 return 0; 2580 2581 rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL); 2582 if (!rauhtd_pl) 2583 return -ENOMEM; 2584 2585 type = MLXSW_REG_RAUHTD_TYPE_IPV4; 2586 err = __mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp, rauhtd_pl, type); 2587 if (err) 2588 goto out; 2589 2590 type = MLXSW_REG_RAUHTD_TYPE_IPV6; 2591 err = __mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp, rauhtd_pl, type); 2592 out: 2593 kfree(rauhtd_pl); 2594 return err; 2595 } 2596 2597 static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp) 2598 { 2599 struct mlxsw_sp_neigh_entry *neigh_entry; 2600 2601 mutex_lock(&mlxsw_sp->router->lock); 2602 list_for_each_entry(neigh_entry, &mlxsw_sp->router->nexthop_neighs_list, 2603 nexthop_neighs_list_node) 2604 /* If this neigh have nexthops, make the kernel think this neigh 2605 * is active regardless of the traffic. 2606 */ 2607 neigh_event_send(neigh_entry->key.n, NULL); 2608 mutex_unlock(&mlxsw_sp->router->lock); 2609 } 2610 2611 static void 2612 mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp) 2613 { 2614 unsigned long interval = mlxsw_sp->router->neighs_update.interval; 2615 2616 mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 2617 msecs_to_jiffies(interval)); 2618 } 2619 2620 static void mlxsw_sp_router_neighs_update_work(struct work_struct *work) 2621 { 2622 struct mlxsw_sp_router *router; 2623 int err; 2624 2625 router = container_of(work, struct mlxsw_sp_router, 2626 neighs_update.dw.work); 2627 err = mlxsw_sp_router_neighs_update_rauhtd(router->mlxsw_sp); 2628 if (err) 2629 dev_err(router->mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity"); 2630 2631 mlxsw_sp_router_neighs_update_nh(router->mlxsw_sp); 2632 2633 mlxsw_sp_router_neighs_update_work_schedule(router->mlxsw_sp); 2634 } 2635 2636 static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work) 2637 { 2638 struct mlxsw_sp_neigh_entry *neigh_entry; 2639 struct mlxsw_sp_router *router; 2640 2641 router = container_of(work, struct mlxsw_sp_router, 2642 nexthop_probe_dw.work); 2643 /* Iterate over nexthop neighbours, find those who are unresolved and 2644 * send arp on them. This solves the chicken-egg problem when 2645 * the nexthop wouldn't get offloaded until the neighbor is resolved 2646 * but it wouldn't get resolved ever in case traffic is flowing in HW 2647 * using different nexthop. 2648 */ 2649 mutex_lock(&router->lock); 2650 list_for_each_entry(neigh_entry, &router->nexthop_neighs_list, 2651 nexthop_neighs_list_node) 2652 if (!neigh_entry->connected) 2653 neigh_event_send(neigh_entry->key.n, NULL); 2654 mutex_unlock(&router->lock); 2655 2656 mlxsw_core_schedule_dw(&router->nexthop_probe_dw, 2657 MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL); 2658 } 2659 2660 static void 2661 mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, 2662 struct mlxsw_sp_neigh_entry *neigh_entry, 2663 bool removing, bool dead); 2664 2665 static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding) 2666 { 2667 return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD : 2668 MLXSW_REG_RAUHT_OP_WRITE_DELETE; 2669 } 2670 2671 static int 2672 mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp, 2673 struct mlxsw_sp_neigh_entry *neigh_entry, 2674 enum mlxsw_reg_rauht_op op) 2675 { 2676 struct neighbour *n = neigh_entry->key.n; 2677 u32 dip = ntohl(*((__be32 *) n->primary_key)); 2678 char rauht_pl[MLXSW_REG_RAUHT_LEN]; 2679 2680 mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, 2681 dip); 2682 if (neigh_entry->counter_valid) 2683 mlxsw_reg_rauht_pack_counter(rauht_pl, 2684 neigh_entry->counter_index); 2685 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); 2686 } 2687 2688 static int 2689 mlxsw_sp_router_neigh_entry_op6(struct mlxsw_sp *mlxsw_sp, 2690 struct mlxsw_sp_neigh_entry *neigh_entry, 2691 enum mlxsw_reg_rauht_op op) 2692 { 2693 struct neighbour *n = neigh_entry->key.n; 2694 char rauht_pl[MLXSW_REG_RAUHT_LEN]; 2695 const char *dip = n->primary_key; 2696 2697 mlxsw_reg_rauht_pack6(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, 2698 dip); 2699 if (neigh_entry->counter_valid) 2700 mlxsw_reg_rauht_pack_counter(rauht_pl, 2701 neigh_entry->counter_index); 2702 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); 2703 } 2704 2705 bool mlxsw_sp_neigh_ipv6_ignore(struct mlxsw_sp_neigh_entry *neigh_entry) 2706 { 2707 struct neighbour *n = neigh_entry->key.n; 2708 2709 /* Packets with a link-local destination address are trapped 2710 * after LPM lookup and never reach the neighbour table, so 2711 * there is no need to program such neighbours to the device. 2712 */ 2713 if (ipv6_addr_type((struct in6_addr *) &n->primary_key) & 2714 IPV6_ADDR_LINKLOCAL) 2715 return true; 2716 return false; 2717 } 2718 2719 static void 2720 mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp, 2721 struct mlxsw_sp_neigh_entry *neigh_entry, 2722 bool adding) 2723 { 2724 enum mlxsw_reg_rauht_op op = mlxsw_sp_rauht_op(adding); 2725 int err; 2726 2727 if (!adding && !neigh_entry->connected) 2728 return; 2729 neigh_entry->connected = adding; 2730 if (neigh_entry->key.n->tbl->family == AF_INET) { 2731 err = mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry, 2732 op); 2733 if (err) 2734 return; 2735 } else if (neigh_entry->key.n->tbl->family == AF_INET6) { 2736 if (mlxsw_sp_neigh_ipv6_ignore(neigh_entry)) 2737 return; 2738 err = mlxsw_sp_router_neigh_entry_op6(mlxsw_sp, neigh_entry, 2739 op); 2740 if (err) 2741 return; 2742 } else { 2743 WARN_ON_ONCE(1); 2744 return; 2745 } 2746 2747 if (adding) 2748 neigh_entry->key.n->flags |= NTF_OFFLOADED; 2749 else 2750 neigh_entry->key.n->flags &= ~NTF_OFFLOADED; 2751 } 2752 2753 void 2754 mlxsw_sp_neigh_entry_counter_update(struct mlxsw_sp *mlxsw_sp, 2755 struct mlxsw_sp_neigh_entry *neigh_entry, 2756 bool adding) 2757 { 2758 if (adding) 2759 mlxsw_sp_neigh_counter_alloc(mlxsw_sp, neigh_entry); 2760 else 2761 mlxsw_sp_neigh_counter_free(mlxsw_sp, neigh_entry); 2762 mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, true); 2763 } 2764 2765 struct mlxsw_sp_netevent_work { 2766 struct work_struct work; 2767 struct mlxsw_sp *mlxsw_sp; 2768 struct neighbour *n; 2769 }; 2770 2771 static void mlxsw_sp_router_neigh_event_work(struct work_struct *work) 2772 { 2773 struct mlxsw_sp_netevent_work *net_work = 2774 container_of(work, struct mlxsw_sp_netevent_work, work); 2775 struct mlxsw_sp *mlxsw_sp = net_work->mlxsw_sp; 2776 struct mlxsw_sp_neigh_entry *neigh_entry; 2777 struct neighbour *n = net_work->n; 2778 unsigned char ha[ETH_ALEN]; 2779 bool entry_connected; 2780 u8 nud_state, dead; 2781 2782 /* If these parameters are changed after we release the lock, 2783 * then we are guaranteed to receive another event letting us 2784 * know about it. 2785 */ 2786 read_lock_bh(&n->lock); 2787 memcpy(ha, n->ha, ETH_ALEN); 2788 nud_state = n->nud_state; 2789 dead = n->dead; 2790 read_unlock_bh(&n->lock); 2791 2792 mutex_lock(&mlxsw_sp->router->lock); 2793 mlxsw_sp_span_respin(mlxsw_sp); 2794 2795 entry_connected = nud_state & NUD_VALID && !dead; 2796 neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); 2797 if (!entry_connected && !neigh_entry) 2798 goto out; 2799 if (!neigh_entry) { 2800 neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); 2801 if (IS_ERR(neigh_entry)) 2802 goto out; 2803 } 2804 2805 if (neigh_entry->connected && entry_connected && 2806 !memcmp(neigh_entry->ha, ha, ETH_ALEN)) 2807 goto out; 2808 2809 memcpy(neigh_entry->ha, ha, ETH_ALEN); 2810 mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected); 2811 mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected, 2812 dead); 2813 2814 if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) 2815 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); 2816 2817 out: 2818 mutex_unlock(&mlxsw_sp->router->lock); 2819 neigh_release(n); 2820 kfree(net_work); 2821 } 2822 2823 static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp); 2824 2825 static void mlxsw_sp_router_mp_hash_event_work(struct work_struct *work) 2826 { 2827 struct mlxsw_sp_netevent_work *net_work = 2828 container_of(work, struct mlxsw_sp_netevent_work, work); 2829 struct mlxsw_sp *mlxsw_sp = net_work->mlxsw_sp; 2830 2831 mlxsw_sp_mp_hash_init(mlxsw_sp); 2832 kfree(net_work); 2833 } 2834 2835 static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp); 2836 2837 static void mlxsw_sp_router_update_priority_work(struct work_struct *work) 2838 { 2839 struct mlxsw_sp_netevent_work *net_work = 2840 container_of(work, struct mlxsw_sp_netevent_work, work); 2841 struct mlxsw_sp *mlxsw_sp = net_work->mlxsw_sp; 2842 2843 __mlxsw_sp_router_init(mlxsw_sp); 2844 kfree(net_work); 2845 } 2846 2847 static int mlxsw_sp_router_schedule_work(struct net *net, 2848 struct mlxsw_sp_router *router, 2849 struct neighbour *n, 2850 void (*cb)(struct work_struct *)) 2851 { 2852 struct mlxsw_sp_netevent_work *net_work; 2853 2854 if (!net_eq(net, mlxsw_sp_net(router->mlxsw_sp))) 2855 return NOTIFY_DONE; 2856 2857 net_work = kzalloc(sizeof(*net_work), GFP_ATOMIC); 2858 if (!net_work) 2859 return NOTIFY_BAD; 2860 2861 INIT_WORK(&net_work->work, cb); 2862 net_work->mlxsw_sp = router->mlxsw_sp; 2863 net_work->n = n; 2864 mlxsw_core_schedule_work(&net_work->work); 2865 return NOTIFY_DONE; 2866 } 2867 2868 static bool mlxsw_sp_dev_lower_is_port(struct net_device *dev) 2869 { 2870 struct mlxsw_sp_port *mlxsw_sp_port; 2871 2872 rcu_read_lock(); 2873 mlxsw_sp_port = mlxsw_sp_port_dev_lower_find_rcu(dev); 2874 rcu_read_unlock(); 2875 return !!mlxsw_sp_port; 2876 } 2877 2878 static int mlxsw_sp_router_schedule_neigh_work(struct mlxsw_sp_router *router, 2879 struct neighbour *n) 2880 { 2881 struct net *net; 2882 2883 net = neigh_parms_net(n->parms); 2884 2885 /* Take a reference to ensure the neighbour won't be destructed until we 2886 * drop the reference in delayed work. 2887 */ 2888 neigh_clone(n); 2889 return mlxsw_sp_router_schedule_work(net, router, n, 2890 mlxsw_sp_router_neigh_event_work); 2891 } 2892 2893 static int mlxsw_sp_router_netevent_event(struct notifier_block *nb, 2894 unsigned long event, void *ptr) 2895 { 2896 struct mlxsw_sp_router *router; 2897 unsigned long interval; 2898 struct neigh_parms *p; 2899 struct neighbour *n; 2900 2901 router = container_of(nb, struct mlxsw_sp_router, netevent_nb); 2902 2903 switch (event) { 2904 case NETEVENT_DELAY_PROBE_TIME_UPDATE: 2905 p = ptr; 2906 2907 /* We don't care about changes in the default table. */ 2908 if (!p->dev || (p->tbl->family != AF_INET && 2909 p->tbl->family != AF_INET6)) 2910 return NOTIFY_DONE; 2911 2912 /* We are in atomic context and can't take RTNL mutex, 2913 * so use RCU variant to walk the device chain. 2914 */ 2915 if (!mlxsw_sp_dev_lower_is_port(p->dev)) 2916 return NOTIFY_DONE; 2917 2918 interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME)); 2919 router->neighs_update.interval = interval; 2920 break; 2921 case NETEVENT_NEIGH_UPDATE: 2922 n = ptr; 2923 2924 if (n->tbl->family != AF_INET && n->tbl->family != AF_INET6) 2925 return NOTIFY_DONE; 2926 2927 if (!mlxsw_sp_dev_lower_is_port(n->dev)) 2928 return NOTIFY_DONE; 2929 2930 return mlxsw_sp_router_schedule_neigh_work(router, n); 2931 2932 case NETEVENT_IPV4_MPATH_HASH_UPDATE: 2933 case NETEVENT_IPV6_MPATH_HASH_UPDATE: 2934 return mlxsw_sp_router_schedule_work(ptr, router, NULL, 2935 mlxsw_sp_router_mp_hash_event_work); 2936 2937 case NETEVENT_IPV4_FWD_UPDATE_PRIORITY_UPDATE: 2938 return mlxsw_sp_router_schedule_work(ptr, router, NULL, 2939 mlxsw_sp_router_update_priority_work); 2940 } 2941 2942 return NOTIFY_DONE; 2943 } 2944 2945 static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) 2946 { 2947 int err; 2948 2949 err = rhashtable_init(&mlxsw_sp->router->neigh_ht, 2950 &mlxsw_sp_neigh_ht_params); 2951 if (err) 2952 return err; 2953 2954 /* Initialize the polling interval according to the default 2955 * table. 2956 */ 2957 mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); 2958 2959 /* Create the delayed works for the activity_update */ 2960 INIT_DELAYED_WORK(&mlxsw_sp->router->neighs_update.dw, 2961 mlxsw_sp_router_neighs_update_work); 2962 INIT_DELAYED_WORK(&mlxsw_sp->router->nexthop_probe_dw, 2963 mlxsw_sp_router_probe_unresolved_nexthops); 2964 atomic_set(&mlxsw_sp->router->neighs_update.neigh_count, 0); 2965 mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 0); 2966 mlxsw_core_schedule_dw(&mlxsw_sp->router->nexthop_probe_dw, 0); 2967 return 0; 2968 } 2969 2970 static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) 2971 { 2972 cancel_delayed_work_sync(&mlxsw_sp->router->neighs_update.dw); 2973 cancel_delayed_work_sync(&mlxsw_sp->router->nexthop_probe_dw); 2974 rhashtable_destroy(&mlxsw_sp->router->neigh_ht); 2975 } 2976 2977 static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, 2978 struct mlxsw_sp_rif *rif) 2979 { 2980 struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; 2981 2982 list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list, 2983 rif_list_node) { 2984 mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, false); 2985 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); 2986 } 2987 } 2988 2989 struct mlxsw_sp_neigh_rif_made_sync { 2990 struct mlxsw_sp *mlxsw_sp; 2991 struct mlxsw_sp_rif *rif; 2992 int err; 2993 }; 2994 2995 static void mlxsw_sp_neigh_rif_made_sync_each(struct neighbour *n, void *data) 2996 { 2997 struct mlxsw_sp_neigh_rif_made_sync *rms = data; 2998 int rc; 2999 3000 if (rms->err) 3001 return; 3002 if (n->dev != mlxsw_sp_rif_dev(rms->rif)) 3003 return; 3004 rc = mlxsw_sp_router_schedule_neigh_work(rms->mlxsw_sp->router, n); 3005 if (rc != NOTIFY_DONE) 3006 rms->err = -ENOMEM; 3007 } 3008 3009 static int mlxsw_sp_neigh_rif_made_sync(struct mlxsw_sp *mlxsw_sp, 3010 struct mlxsw_sp_rif *rif) 3011 { 3012 struct mlxsw_sp_neigh_rif_made_sync rms = { 3013 .mlxsw_sp = mlxsw_sp, 3014 .rif = rif, 3015 }; 3016 3017 if (!mlxsw_sp_dev_lower_is_port(mlxsw_sp_rif_dev(rif))) 3018 return 0; 3019 3020 neigh_for_each(&arp_tbl, mlxsw_sp_neigh_rif_made_sync_each, &rms); 3021 if (rms.err) 3022 goto err_arp; 3023 3024 #if IS_ENABLED(CONFIG_IPV6) 3025 neigh_for_each(&nd_tbl, mlxsw_sp_neigh_rif_made_sync_each, &rms); 3026 #endif 3027 if (rms.err) 3028 goto err_nd; 3029 3030 return 0; 3031 3032 err_nd: 3033 err_arp: 3034 mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); 3035 return rms.err; 3036 } 3037 3038 enum mlxsw_sp_nexthop_type { 3039 MLXSW_SP_NEXTHOP_TYPE_ETH, 3040 MLXSW_SP_NEXTHOP_TYPE_IPIP, 3041 }; 3042 3043 enum mlxsw_sp_nexthop_action { 3044 /* Nexthop forwards packets to an egress RIF */ 3045 MLXSW_SP_NEXTHOP_ACTION_FORWARD, 3046 /* Nexthop discards packets */ 3047 MLXSW_SP_NEXTHOP_ACTION_DISCARD, 3048 /* Nexthop traps packets */ 3049 MLXSW_SP_NEXTHOP_ACTION_TRAP, 3050 }; 3051 3052 struct mlxsw_sp_nexthop_key { 3053 struct fib_nh *fib_nh; 3054 }; 3055 3056 struct mlxsw_sp_nexthop_counter; 3057 3058 struct mlxsw_sp_nexthop { 3059 struct list_head neigh_list_node; /* member of neigh entry list */ 3060 struct list_head crif_list_node; 3061 struct list_head router_list_node; 3062 struct mlxsw_sp_nexthop_group_info *nhgi; /* pointer back to the group 3063 * this nexthop belongs to 3064 */ 3065 struct rhash_head ht_node; 3066 struct neigh_table *neigh_tbl; 3067 struct mlxsw_sp_nexthop_key key; 3068 unsigned char gw_addr[sizeof(struct in6_addr)]; 3069 int ifindex; 3070 int nh_weight; 3071 int norm_nh_weight; 3072 int num_adj_entries; 3073 struct mlxsw_sp_crif *crif; 3074 u8 should_offload:1, /* set indicates this nexthop should be written 3075 * to the adjacency table. 3076 */ 3077 offloaded:1, /* set indicates this nexthop was written to the 3078 * adjacency table. 3079 */ 3080 update:1; /* set indicates this nexthop should be updated in the 3081 * adjacency table (f.e., its MAC changed). 3082 */ 3083 enum mlxsw_sp_nexthop_action action; 3084 enum mlxsw_sp_nexthop_type type; 3085 union { 3086 struct mlxsw_sp_neigh_entry *neigh_entry; 3087 struct mlxsw_sp_ipip_entry *ipip_entry; 3088 }; 3089 struct mlxsw_sp_nexthop_counter *counter; 3090 u32 id; /* NH ID for members of a NH object group. */ 3091 }; 3092 3093 static struct net_device * 3094 mlxsw_sp_nexthop_dev(const struct mlxsw_sp_nexthop *nh) 3095 { 3096 if (!nh->crif) 3097 return NULL; 3098 return nh->crif->key.dev; 3099 } 3100 3101 enum mlxsw_sp_nexthop_group_type { 3102 MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4, 3103 MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6, 3104 MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ, 3105 }; 3106 3107 struct mlxsw_sp_nexthop_group_info { 3108 struct mlxsw_sp_nexthop_group *nh_grp; 3109 u32 adj_index; 3110 u16 ecmp_size; 3111 u16 count; 3112 int sum_norm_weight; 3113 u8 adj_index_valid:1, 3114 gateway:1, /* routes using the group use a gateway */ 3115 is_resilient:1, 3116 hw_stats:1; 3117 struct list_head list; /* member in nh_res_grp_list */ 3118 struct xarray nexthop_counters; 3119 struct mlxsw_sp_nexthop nexthops[] __counted_by(count); 3120 }; 3121 3122 static struct mlxsw_sp_rif * 3123 mlxsw_sp_nhgi_rif(const struct mlxsw_sp_nexthop_group_info *nhgi) 3124 { 3125 struct mlxsw_sp_crif *crif = nhgi->nexthops[0].crif; 3126 3127 if (!crif) 3128 return NULL; 3129 return crif->rif; 3130 } 3131 3132 struct mlxsw_sp_nexthop_group_vr_key { 3133 u16 vr_id; 3134 enum mlxsw_sp_l3proto proto; 3135 }; 3136 3137 struct mlxsw_sp_nexthop_group_vr_entry { 3138 struct list_head list; /* member in vr_list */ 3139 struct rhash_head ht_node; /* member in vr_ht */ 3140 refcount_t ref_count; 3141 struct mlxsw_sp_nexthop_group_vr_key key; 3142 }; 3143 3144 struct mlxsw_sp_nexthop_group { 3145 struct rhash_head ht_node; 3146 struct list_head fib_list; /* list of fib entries that use this group */ 3147 union { 3148 struct { 3149 struct fib_info *fi; 3150 } ipv4; 3151 struct { 3152 u32 id; 3153 } obj; 3154 }; 3155 struct mlxsw_sp_nexthop_group_info *nhgi; 3156 struct list_head vr_list; 3157 struct rhashtable vr_ht; 3158 enum mlxsw_sp_nexthop_group_type type; 3159 bool can_destroy; 3160 }; 3161 3162 struct mlxsw_sp_nexthop_counter { 3163 unsigned int counter_index; 3164 refcount_t ref_count; 3165 }; 3166 3167 static struct mlxsw_sp_nexthop_counter * 3168 mlxsw_sp_nexthop_counter_alloc(struct mlxsw_sp *mlxsw_sp) 3169 { 3170 struct mlxsw_sp_nexthop_counter *nhct; 3171 int err; 3172 3173 nhct = kzalloc(sizeof(*nhct), GFP_KERNEL); 3174 if (!nhct) 3175 return ERR_PTR(-ENOMEM); 3176 3177 err = mlxsw_sp_flow_counter_alloc(mlxsw_sp, &nhct->counter_index); 3178 if (err) 3179 goto err_counter_alloc; 3180 3181 refcount_set(&nhct->ref_count, 1); 3182 return nhct; 3183 3184 err_counter_alloc: 3185 kfree(nhct); 3186 return ERR_PTR(err); 3187 } 3188 3189 static void 3190 mlxsw_sp_nexthop_counter_free(struct mlxsw_sp *mlxsw_sp, 3191 struct mlxsw_sp_nexthop_counter *nhct) 3192 { 3193 mlxsw_sp_flow_counter_free(mlxsw_sp, nhct->counter_index); 3194 kfree(nhct); 3195 } 3196 3197 static struct mlxsw_sp_nexthop_counter * 3198 mlxsw_sp_nexthop_sh_counter_get(struct mlxsw_sp *mlxsw_sp, 3199 struct mlxsw_sp_nexthop *nh) 3200 { 3201 struct mlxsw_sp_nexthop_group *nh_grp = nh->nhgi->nh_grp; 3202 struct mlxsw_sp_nexthop_counter *nhct; 3203 int err; 3204 3205 nhct = xa_load(&nh_grp->nhgi->nexthop_counters, nh->id); 3206 if (nhct) { 3207 refcount_inc(&nhct->ref_count); 3208 return nhct; 3209 } 3210 3211 nhct = mlxsw_sp_nexthop_counter_alloc(mlxsw_sp); 3212 if (IS_ERR(nhct)) 3213 return nhct; 3214 3215 err = xa_err(xa_store(&nh_grp->nhgi->nexthop_counters, nh->id, nhct, 3216 GFP_KERNEL)); 3217 if (err) 3218 goto err_store; 3219 3220 return nhct; 3221 3222 err_store: 3223 mlxsw_sp_nexthop_counter_free(mlxsw_sp, nhct); 3224 return ERR_PTR(err); 3225 } 3226 3227 static void mlxsw_sp_nexthop_sh_counter_put(struct mlxsw_sp *mlxsw_sp, 3228 struct mlxsw_sp_nexthop *nh) 3229 { 3230 struct mlxsw_sp_nexthop_group *nh_grp = nh->nhgi->nh_grp; 3231 struct mlxsw_sp_nexthop_counter *nhct; 3232 3233 nhct = xa_load(&nh_grp->nhgi->nexthop_counters, nh->id); 3234 if (WARN_ON(!nhct)) 3235 return; 3236 3237 if (!refcount_dec_and_test(&nhct->ref_count)) 3238 return; 3239 3240 xa_erase(&nh_grp->nhgi->nexthop_counters, nh->id); 3241 mlxsw_sp_nexthop_counter_free(mlxsw_sp, nhct); 3242 } 3243 3244 int mlxsw_sp_nexthop_counter_enable(struct mlxsw_sp *mlxsw_sp, 3245 struct mlxsw_sp_nexthop *nh) 3246 { 3247 const char *table_adj = MLXSW_SP_DPIPE_TABLE_NAME_ADJ; 3248 struct mlxsw_sp_nexthop_counter *nhct; 3249 struct devlink *devlink; 3250 bool dpipe_stats; 3251 3252 if (nh->counter) 3253 return 0; 3254 3255 devlink = priv_to_devlink(mlxsw_sp->core); 3256 dpipe_stats = devlink_dpipe_table_counter_enabled(devlink, table_adj); 3257 if (!(nh->nhgi->hw_stats || dpipe_stats)) 3258 return 0; 3259 3260 if (nh->id) 3261 nhct = mlxsw_sp_nexthop_sh_counter_get(mlxsw_sp, nh); 3262 else 3263 nhct = mlxsw_sp_nexthop_counter_alloc(mlxsw_sp); 3264 if (IS_ERR(nhct)) 3265 return PTR_ERR(nhct); 3266 3267 nh->counter = nhct; 3268 return 0; 3269 } 3270 3271 void mlxsw_sp_nexthop_counter_disable(struct mlxsw_sp *mlxsw_sp, 3272 struct mlxsw_sp_nexthop *nh) 3273 { 3274 if (!nh->counter) 3275 return; 3276 3277 if (nh->id) 3278 mlxsw_sp_nexthop_sh_counter_put(mlxsw_sp, nh); 3279 else 3280 mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh->counter); 3281 nh->counter = NULL; 3282 } 3283 3284 static int mlxsw_sp_nexthop_counter_update(struct mlxsw_sp *mlxsw_sp, 3285 struct mlxsw_sp_nexthop *nh) 3286 { 3287 if (nh->nhgi->hw_stats) 3288 return mlxsw_sp_nexthop_counter_enable(mlxsw_sp, nh); 3289 mlxsw_sp_nexthop_counter_disable(mlxsw_sp, nh); 3290 return 0; 3291 } 3292 3293 int mlxsw_sp_nexthop_counter_get(struct mlxsw_sp *mlxsw_sp, 3294 struct mlxsw_sp_nexthop *nh, u64 *p_counter) 3295 { 3296 if (!nh->counter) 3297 return -EINVAL; 3298 3299 return mlxsw_sp_flow_counter_get(mlxsw_sp, nh->counter->counter_index, 3300 true, p_counter, NULL); 3301 } 3302 3303 struct mlxsw_sp_nexthop *mlxsw_sp_nexthop_next(struct mlxsw_sp_router *router, 3304 struct mlxsw_sp_nexthop *nh) 3305 { 3306 if (!nh) { 3307 if (list_empty(&router->nexthop_list)) 3308 return NULL; 3309 else 3310 return list_first_entry(&router->nexthop_list, 3311 typeof(*nh), router_list_node); 3312 } 3313 if (list_is_last(&nh->router_list_node, &router->nexthop_list)) 3314 return NULL; 3315 return list_next_entry(nh, router_list_node); 3316 } 3317 3318 bool mlxsw_sp_nexthop_is_forward(const struct mlxsw_sp_nexthop *nh) 3319 { 3320 return nh->offloaded && nh->action == MLXSW_SP_NEXTHOP_ACTION_FORWARD; 3321 } 3322 3323 unsigned char *mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop *nh) 3324 { 3325 if (nh->type != MLXSW_SP_NEXTHOP_TYPE_ETH || 3326 !mlxsw_sp_nexthop_is_forward(nh)) 3327 return NULL; 3328 return nh->neigh_entry->ha; 3329 } 3330 3331 int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index, 3332 u32 *p_adj_size, u32 *p_adj_hash_index) 3333 { 3334 struct mlxsw_sp_nexthop_group_info *nhgi = nh->nhgi; 3335 u32 adj_hash_index = 0; 3336 int i; 3337 3338 if (!nh->offloaded || !nhgi->adj_index_valid) 3339 return -EINVAL; 3340 3341 *p_adj_index = nhgi->adj_index; 3342 *p_adj_size = nhgi->ecmp_size; 3343 3344 for (i = 0; i < nhgi->count; i++) { 3345 struct mlxsw_sp_nexthop *nh_iter = &nhgi->nexthops[i]; 3346 3347 if (nh_iter == nh) 3348 break; 3349 if (nh_iter->offloaded) 3350 adj_hash_index += nh_iter->num_adj_entries; 3351 } 3352 3353 *p_adj_hash_index = adj_hash_index; 3354 return 0; 3355 } 3356 3357 struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh) 3358 { 3359 if (WARN_ON(!nh->crif)) 3360 return NULL; 3361 return nh->crif->rif; 3362 } 3363 3364 bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh) 3365 { 3366 struct mlxsw_sp_nexthop_group_info *nhgi = nh->nhgi; 3367 int i; 3368 3369 for (i = 0; i < nhgi->count; i++) { 3370 struct mlxsw_sp_nexthop *nh_iter = &nhgi->nexthops[i]; 3371 3372 if (nh_iter->type == MLXSW_SP_NEXTHOP_TYPE_IPIP) 3373 return true; 3374 } 3375 return false; 3376 } 3377 3378 static const struct rhashtable_params mlxsw_sp_nexthop_group_vr_ht_params = { 3379 .key_offset = offsetof(struct mlxsw_sp_nexthop_group_vr_entry, key), 3380 .head_offset = offsetof(struct mlxsw_sp_nexthop_group_vr_entry, ht_node), 3381 .key_len = sizeof(struct mlxsw_sp_nexthop_group_vr_key), 3382 .automatic_shrinking = true, 3383 }; 3384 3385 static struct mlxsw_sp_nexthop_group_vr_entry * 3386 mlxsw_sp_nexthop_group_vr_entry_lookup(struct mlxsw_sp_nexthop_group *nh_grp, 3387 const struct mlxsw_sp_fib *fib) 3388 { 3389 struct mlxsw_sp_nexthop_group_vr_key key; 3390 3391 memset(&key, 0, sizeof(key)); 3392 key.vr_id = fib->vr->id; 3393 key.proto = fib->proto; 3394 return rhashtable_lookup_fast(&nh_grp->vr_ht, &key, 3395 mlxsw_sp_nexthop_group_vr_ht_params); 3396 } 3397 3398 static int 3399 mlxsw_sp_nexthop_group_vr_entry_create(struct mlxsw_sp_nexthop_group *nh_grp, 3400 const struct mlxsw_sp_fib *fib) 3401 { 3402 struct mlxsw_sp_nexthop_group_vr_entry *vr_entry; 3403 int err; 3404 3405 vr_entry = kzalloc(sizeof(*vr_entry), GFP_KERNEL); 3406 if (!vr_entry) 3407 return -ENOMEM; 3408 3409 vr_entry->key.vr_id = fib->vr->id; 3410 vr_entry->key.proto = fib->proto; 3411 refcount_set(&vr_entry->ref_count, 1); 3412 3413 err = rhashtable_insert_fast(&nh_grp->vr_ht, &vr_entry->ht_node, 3414 mlxsw_sp_nexthop_group_vr_ht_params); 3415 if (err) 3416 goto err_hashtable_insert; 3417 3418 list_add(&vr_entry->list, &nh_grp->vr_list); 3419 3420 return 0; 3421 3422 err_hashtable_insert: 3423 kfree(vr_entry); 3424 return err; 3425 } 3426 3427 static void 3428 mlxsw_sp_nexthop_group_vr_entry_destroy(struct mlxsw_sp_nexthop_group *nh_grp, 3429 struct mlxsw_sp_nexthop_group_vr_entry *vr_entry) 3430 { 3431 list_del(&vr_entry->list); 3432 rhashtable_remove_fast(&nh_grp->vr_ht, &vr_entry->ht_node, 3433 mlxsw_sp_nexthop_group_vr_ht_params); 3434 kfree(vr_entry); 3435 } 3436 3437 static int 3438 mlxsw_sp_nexthop_group_vr_link(struct mlxsw_sp_nexthop_group *nh_grp, 3439 const struct mlxsw_sp_fib *fib) 3440 { 3441 struct mlxsw_sp_nexthop_group_vr_entry *vr_entry; 3442 3443 vr_entry = mlxsw_sp_nexthop_group_vr_entry_lookup(nh_grp, fib); 3444 if (vr_entry) { 3445 refcount_inc(&vr_entry->ref_count); 3446 return 0; 3447 } 3448 3449 return mlxsw_sp_nexthop_group_vr_entry_create(nh_grp, fib); 3450 } 3451 3452 static void 3453 mlxsw_sp_nexthop_group_vr_unlink(struct mlxsw_sp_nexthop_group *nh_grp, 3454 const struct mlxsw_sp_fib *fib) 3455 { 3456 struct mlxsw_sp_nexthop_group_vr_entry *vr_entry; 3457 3458 vr_entry = mlxsw_sp_nexthop_group_vr_entry_lookup(nh_grp, fib); 3459 if (WARN_ON_ONCE(!vr_entry)) 3460 return; 3461 3462 if (!refcount_dec_and_test(&vr_entry->ref_count)) 3463 return; 3464 3465 mlxsw_sp_nexthop_group_vr_entry_destroy(nh_grp, vr_entry); 3466 } 3467 3468 struct mlxsw_sp_nexthop_group_cmp_arg { 3469 enum mlxsw_sp_nexthop_group_type type; 3470 union { 3471 struct fib_info *fi; 3472 struct mlxsw_sp_fib6_entry *fib6_entry; 3473 u32 id; 3474 }; 3475 }; 3476 3477 static bool 3478 mlxsw_sp_nexthop6_group_has_nexthop(const struct mlxsw_sp_nexthop_group *nh_grp, 3479 const struct in6_addr *gw, int ifindex, 3480 int weight) 3481 { 3482 int i; 3483 3484 for (i = 0; i < nh_grp->nhgi->count; i++) { 3485 const struct mlxsw_sp_nexthop *nh; 3486 3487 nh = &nh_grp->nhgi->nexthops[i]; 3488 if (nh->ifindex == ifindex && nh->nh_weight == weight && 3489 ipv6_addr_equal(gw, (struct in6_addr *) nh->gw_addr)) 3490 return true; 3491 } 3492 3493 return false; 3494 } 3495 3496 static bool 3497 mlxsw_sp_nexthop6_group_cmp(const struct mlxsw_sp_nexthop_group *nh_grp, 3498 const struct mlxsw_sp_fib6_entry *fib6_entry) 3499 { 3500 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 3501 3502 if (nh_grp->nhgi->count != fib6_entry->nrt6) 3503 return false; 3504 3505 list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { 3506 struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh; 3507 struct in6_addr *gw; 3508 int ifindex, weight; 3509 3510 ifindex = fib6_nh->fib_nh_dev->ifindex; 3511 weight = fib6_nh->fib_nh_weight; 3512 gw = &fib6_nh->fib_nh_gw6; 3513 if (!mlxsw_sp_nexthop6_group_has_nexthop(nh_grp, gw, ifindex, 3514 weight)) 3515 return false; 3516 } 3517 3518 return true; 3519 } 3520 3521 static int 3522 mlxsw_sp_nexthop_group_cmp(struct rhashtable_compare_arg *arg, const void *ptr) 3523 { 3524 const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = arg->key; 3525 const struct mlxsw_sp_nexthop_group *nh_grp = ptr; 3526 3527 if (nh_grp->type != cmp_arg->type) 3528 return 1; 3529 3530 switch (cmp_arg->type) { 3531 case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4: 3532 return cmp_arg->fi != nh_grp->ipv4.fi; 3533 case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6: 3534 return !mlxsw_sp_nexthop6_group_cmp(nh_grp, 3535 cmp_arg->fib6_entry); 3536 case MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ: 3537 return cmp_arg->id != nh_grp->obj.id; 3538 default: 3539 WARN_ON(1); 3540 return 1; 3541 } 3542 } 3543 3544 static u32 mlxsw_sp_nexthop_group_hash_obj(const void *data, u32 len, u32 seed) 3545 { 3546 const struct mlxsw_sp_nexthop_group *nh_grp = data; 3547 const struct mlxsw_sp_nexthop *nh; 3548 struct fib_info *fi; 3549 unsigned int val; 3550 int i; 3551 3552 switch (nh_grp->type) { 3553 case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4: 3554 fi = nh_grp->ipv4.fi; 3555 return jhash(&fi, sizeof(fi), seed); 3556 case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6: 3557 val = nh_grp->nhgi->count; 3558 for (i = 0; i < nh_grp->nhgi->count; i++) { 3559 nh = &nh_grp->nhgi->nexthops[i]; 3560 val ^= jhash(&nh->ifindex, sizeof(nh->ifindex), seed); 3561 val ^= jhash(&nh->gw_addr, sizeof(nh->gw_addr), seed); 3562 } 3563 return jhash(&val, sizeof(val), seed); 3564 case MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ: 3565 return jhash(&nh_grp->obj.id, sizeof(nh_grp->obj.id), seed); 3566 default: 3567 WARN_ON(1); 3568 return 0; 3569 } 3570 } 3571 3572 static u32 3573 mlxsw_sp_nexthop6_group_hash(struct mlxsw_sp_fib6_entry *fib6_entry, u32 seed) 3574 { 3575 unsigned int val = fib6_entry->nrt6; 3576 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 3577 3578 list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { 3579 struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh; 3580 struct net_device *dev = fib6_nh->fib_nh_dev; 3581 struct in6_addr *gw = &fib6_nh->fib_nh_gw6; 3582 3583 val ^= jhash(&dev->ifindex, sizeof(dev->ifindex), seed); 3584 val ^= jhash(gw, sizeof(*gw), seed); 3585 } 3586 3587 return jhash(&val, sizeof(val), seed); 3588 } 3589 3590 static u32 3591 mlxsw_sp_nexthop_group_hash(const void *data, u32 len, u32 seed) 3592 { 3593 const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = data; 3594 3595 switch (cmp_arg->type) { 3596 case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4: 3597 return jhash(&cmp_arg->fi, sizeof(cmp_arg->fi), seed); 3598 case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6: 3599 return mlxsw_sp_nexthop6_group_hash(cmp_arg->fib6_entry, seed); 3600 case MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ: 3601 return jhash(&cmp_arg->id, sizeof(cmp_arg->id), seed); 3602 default: 3603 WARN_ON(1); 3604 return 0; 3605 } 3606 } 3607 3608 static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { 3609 .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), 3610 .hashfn = mlxsw_sp_nexthop_group_hash, 3611 .obj_hashfn = mlxsw_sp_nexthop_group_hash_obj, 3612 .obj_cmpfn = mlxsw_sp_nexthop_group_cmp, 3613 }; 3614 3615 static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, 3616 struct mlxsw_sp_nexthop_group *nh_grp) 3617 { 3618 if (nh_grp->type == MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6 && 3619 !nh_grp->nhgi->gateway) 3620 return 0; 3621 3622 return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht, 3623 &nh_grp->ht_node, 3624 mlxsw_sp_nexthop_group_ht_params); 3625 } 3626 3627 static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, 3628 struct mlxsw_sp_nexthop_group *nh_grp) 3629 { 3630 if (nh_grp->type == MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6 && 3631 !nh_grp->nhgi->gateway) 3632 return; 3633 3634 rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht, 3635 &nh_grp->ht_node, 3636 mlxsw_sp_nexthop_group_ht_params); 3637 } 3638 3639 static struct mlxsw_sp_nexthop_group * 3640 mlxsw_sp_nexthop4_group_lookup(struct mlxsw_sp *mlxsw_sp, 3641 struct fib_info *fi) 3642 { 3643 struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; 3644 3645 cmp_arg.type = MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4; 3646 cmp_arg.fi = fi; 3647 return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, 3648 &cmp_arg, 3649 mlxsw_sp_nexthop_group_ht_params); 3650 } 3651 3652 static struct mlxsw_sp_nexthop_group * 3653 mlxsw_sp_nexthop6_group_lookup(struct mlxsw_sp *mlxsw_sp, 3654 struct mlxsw_sp_fib6_entry *fib6_entry) 3655 { 3656 struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; 3657 3658 cmp_arg.type = MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6; 3659 cmp_arg.fib6_entry = fib6_entry; 3660 return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, 3661 &cmp_arg, 3662 mlxsw_sp_nexthop_group_ht_params); 3663 } 3664 3665 static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { 3666 .key_offset = offsetof(struct mlxsw_sp_nexthop, key), 3667 .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), 3668 .key_len = sizeof(struct mlxsw_sp_nexthop_key), 3669 }; 3670 3671 static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, 3672 struct mlxsw_sp_nexthop *nh) 3673 { 3674 return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht, 3675 &nh->ht_node, mlxsw_sp_nexthop_ht_params); 3676 } 3677 3678 static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, 3679 struct mlxsw_sp_nexthop *nh) 3680 { 3681 rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node, 3682 mlxsw_sp_nexthop_ht_params); 3683 } 3684 3685 static struct mlxsw_sp_nexthop * 3686 mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, 3687 struct mlxsw_sp_nexthop_key key) 3688 { 3689 return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key, 3690 mlxsw_sp_nexthop_ht_params); 3691 } 3692 3693 static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, 3694 enum mlxsw_sp_l3proto proto, 3695 u16 vr_id, 3696 u32 adj_index, u16 ecmp_size, 3697 u32 new_adj_index, 3698 u16 new_ecmp_size) 3699 { 3700 char raleu_pl[MLXSW_REG_RALEU_LEN]; 3701 3702 mlxsw_reg_raleu_pack(raleu_pl, 3703 (enum mlxsw_reg_ralxx_protocol) proto, vr_id, 3704 adj_index, ecmp_size, new_adj_index, 3705 new_ecmp_size); 3706 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); 3707 } 3708 3709 static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, 3710 struct mlxsw_sp_nexthop_group *nh_grp, 3711 u32 old_adj_index, u16 old_ecmp_size) 3712 { 3713 struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi; 3714 struct mlxsw_sp_nexthop_group_vr_entry *vr_entry; 3715 int err; 3716 3717 list_for_each_entry(vr_entry, &nh_grp->vr_list, list) { 3718 err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, 3719 vr_entry->key.proto, 3720 vr_entry->key.vr_id, 3721 old_adj_index, 3722 old_ecmp_size, 3723 nhgi->adj_index, 3724 nhgi->ecmp_size); 3725 if (err) 3726 goto err_mass_update_vr; 3727 } 3728 return 0; 3729 3730 err_mass_update_vr: 3731 list_for_each_entry_continue_reverse(vr_entry, &nh_grp->vr_list, list) 3732 mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, vr_entry->key.proto, 3733 vr_entry->key.vr_id, 3734 nhgi->adj_index, 3735 nhgi->ecmp_size, 3736 old_adj_index, old_ecmp_size); 3737 return err; 3738 } 3739 3740 static int __mlxsw_sp_nexthop_eth_update(struct mlxsw_sp *mlxsw_sp, 3741 u32 adj_index, 3742 struct mlxsw_sp_nexthop *nh, 3743 bool force, char *ratr_pl) 3744 { 3745 struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; 3746 struct mlxsw_sp_rif *rif = mlxsw_sp_nexthop_rif(nh); 3747 enum mlxsw_reg_ratr_op op; 3748 u16 rif_index; 3749 3750 rif_index = rif ? rif->rif_index : 3751 mlxsw_sp->router->lb_crif->rif->rif_index; 3752 op = force ? MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY : 3753 MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY_ON_ACTIVITY; 3754 mlxsw_reg_ratr_pack(ratr_pl, op, true, MLXSW_REG_RATR_TYPE_ETHERNET, 3755 adj_index, rif_index); 3756 switch (nh->action) { 3757 case MLXSW_SP_NEXTHOP_ACTION_FORWARD: 3758 mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); 3759 break; 3760 case MLXSW_SP_NEXTHOP_ACTION_DISCARD: 3761 mlxsw_reg_ratr_trap_action_set(ratr_pl, 3762 MLXSW_REG_RATR_TRAP_ACTION_DISCARD_ERRORS); 3763 break; 3764 case MLXSW_SP_NEXTHOP_ACTION_TRAP: 3765 mlxsw_reg_ratr_trap_action_set(ratr_pl, 3766 MLXSW_REG_RATR_TRAP_ACTION_TRAP); 3767 mlxsw_reg_ratr_trap_id_set(ratr_pl, MLXSW_TRAP_ID_RTR_EGRESS0); 3768 break; 3769 default: 3770 WARN_ON_ONCE(1); 3771 return -EINVAL; 3772 } 3773 if (nh->counter) 3774 mlxsw_reg_ratr_counter_pack(ratr_pl, nh->counter->counter_index, 3775 true); 3776 else 3777 mlxsw_reg_ratr_counter_pack(ratr_pl, 0, false); 3778 3779 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); 3780 } 3781 3782 int mlxsw_sp_nexthop_eth_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, 3783 struct mlxsw_sp_nexthop *nh, bool force, 3784 char *ratr_pl) 3785 { 3786 int i; 3787 3788 for (i = 0; i < nh->num_adj_entries; i++) { 3789 int err; 3790 3791 err = __mlxsw_sp_nexthop_eth_update(mlxsw_sp, adj_index + i, 3792 nh, force, ratr_pl); 3793 if (err) 3794 return err; 3795 } 3796 3797 return 0; 3798 } 3799 3800 static int __mlxsw_sp_nexthop_ipip_update(struct mlxsw_sp *mlxsw_sp, 3801 u32 adj_index, 3802 struct mlxsw_sp_nexthop *nh, 3803 bool force, char *ratr_pl) 3804 { 3805 const struct mlxsw_sp_ipip_ops *ipip_ops; 3806 3807 ipip_ops = mlxsw_sp->router->ipip_ops_arr[nh->ipip_entry->ipipt]; 3808 return ipip_ops->nexthop_update(mlxsw_sp, adj_index, nh->ipip_entry, 3809 force, ratr_pl); 3810 } 3811 3812 static int mlxsw_sp_nexthop_ipip_update(struct mlxsw_sp *mlxsw_sp, 3813 u32 adj_index, 3814 struct mlxsw_sp_nexthop *nh, bool force, 3815 char *ratr_pl) 3816 { 3817 int i; 3818 3819 for (i = 0; i < nh->num_adj_entries; i++) { 3820 int err; 3821 3822 err = __mlxsw_sp_nexthop_ipip_update(mlxsw_sp, adj_index + i, 3823 nh, force, ratr_pl); 3824 if (err) 3825 return err; 3826 } 3827 3828 return 0; 3829 } 3830 3831 static int mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, 3832 struct mlxsw_sp_nexthop *nh, bool force, 3833 char *ratr_pl) 3834 { 3835 /* When action is discard or trap, the nexthop must be 3836 * programmed as an Ethernet nexthop. 3837 */ 3838 if (nh->type == MLXSW_SP_NEXTHOP_TYPE_ETH || 3839 nh->action == MLXSW_SP_NEXTHOP_ACTION_DISCARD || 3840 nh->action == MLXSW_SP_NEXTHOP_ACTION_TRAP) 3841 return mlxsw_sp_nexthop_eth_update(mlxsw_sp, adj_index, nh, 3842 force, ratr_pl); 3843 else 3844 return mlxsw_sp_nexthop_ipip_update(mlxsw_sp, adj_index, nh, 3845 force, ratr_pl); 3846 } 3847 3848 static int 3849 mlxsw_sp_nexthop_group_update(struct mlxsw_sp *mlxsw_sp, 3850 struct mlxsw_sp_nexthop_group_info *nhgi, 3851 bool reallocate) 3852 { 3853 char ratr_pl[MLXSW_REG_RATR_LEN]; 3854 u32 adj_index = nhgi->adj_index; /* base */ 3855 struct mlxsw_sp_nexthop *nh; 3856 int i; 3857 3858 for (i = 0; i < nhgi->count; i++) { 3859 nh = &nhgi->nexthops[i]; 3860 3861 if (!nh->should_offload) { 3862 mlxsw_sp_nexthop_counter_disable(mlxsw_sp, nh); 3863 nh->offloaded = 0; 3864 continue; 3865 } 3866 3867 if (nh->update || reallocate) { 3868 int err = 0; 3869 3870 err = mlxsw_sp_nexthop_counter_update(mlxsw_sp, nh); 3871 if (err) 3872 return err; 3873 3874 err = mlxsw_sp_nexthop_update(mlxsw_sp, adj_index, nh, 3875 true, ratr_pl); 3876 if (err) 3877 return err; 3878 nh->update = 0; 3879 nh->offloaded = 1; 3880 } 3881 adj_index += nh->num_adj_entries; 3882 } 3883 return 0; 3884 } 3885 3886 static int 3887 mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, 3888 struct mlxsw_sp_nexthop_group *nh_grp) 3889 { 3890 struct mlxsw_sp_fib_entry *fib_entry; 3891 int err; 3892 3893 list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { 3894 err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); 3895 if (err) 3896 return err; 3897 } 3898 return 0; 3899 } 3900 3901 struct mlxsw_sp_adj_grp_size_range { 3902 u16 start; /* Inclusive */ 3903 u16 end; /* Inclusive */ 3904 }; 3905 3906 /* Ordered by range start value */ 3907 static const struct mlxsw_sp_adj_grp_size_range 3908 mlxsw_sp1_adj_grp_size_ranges[] = { 3909 { .start = 1, .end = 64 }, 3910 { .start = 512, .end = 512 }, 3911 { .start = 1024, .end = 1024 }, 3912 { .start = 2048, .end = 2048 }, 3913 { .start = 4096, .end = 4096 }, 3914 }; 3915 3916 /* Ordered by range start value */ 3917 static const struct mlxsw_sp_adj_grp_size_range 3918 mlxsw_sp2_adj_grp_size_ranges[] = { 3919 { .start = 1, .end = 128 }, 3920 { .start = 256, .end = 256 }, 3921 { .start = 512, .end = 512 }, 3922 { .start = 1024, .end = 1024 }, 3923 { .start = 2048, .end = 2048 }, 3924 { .start = 4096, .end = 4096 }, 3925 }; 3926 3927 static void mlxsw_sp_adj_grp_size_round_up(const struct mlxsw_sp *mlxsw_sp, 3928 u16 *p_adj_grp_size) 3929 { 3930 int i; 3931 3932 for (i = 0; i < mlxsw_sp->router->adj_grp_size_ranges_count; i++) { 3933 const struct mlxsw_sp_adj_grp_size_range *size_range; 3934 3935 size_range = &mlxsw_sp->router->adj_grp_size_ranges[i]; 3936 3937 if (*p_adj_grp_size >= size_range->start && 3938 *p_adj_grp_size <= size_range->end) 3939 return; 3940 3941 if (*p_adj_grp_size <= size_range->end) { 3942 *p_adj_grp_size = size_range->end; 3943 return; 3944 } 3945 } 3946 } 3947 3948 static void mlxsw_sp_adj_grp_size_round_down(const struct mlxsw_sp *mlxsw_sp, 3949 u16 *p_adj_grp_size, 3950 unsigned int alloc_size) 3951 { 3952 int i; 3953 3954 for (i = mlxsw_sp->router->adj_grp_size_ranges_count - 1; i >= 0; i--) { 3955 const struct mlxsw_sp_adj_grp_size_range *size_range; 3956 3957 size_range = &mlxsw_sp->router->adj_grp_size_ranges[i]; 3958 3959 if (alloc_size >= size_range->end) { 3960 *p_adj_grp_size = size_range->end; 3961 return; 3962 } 3963 } 3964 } 3965 3966 static int mlxsw_sp_fix_adj_grp_size(struct mlxsw_sp *mlxsw_sp, 3967 u16 *p_adj_grp_size) 3968 { 3969 unsigned int alloc_size; 3970 int err; 3971 3972 /* Round up the requested group size to the next size supported 3973 * by the device and make sure the request can be satisfied. 3974 */ 3975 mlxsw_sp_adj_grp_size_round_up(mlxsw_sp, p_adj_grp_size); 3976 err = mlxsw_sp_kvdl_alloc_count_query(mlxsw_sp, 3977 MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 3978 *p_adj_grp_size, &alloc_size); 3979 if (err) 3980 return err; 3981 /* It is possible the allocation results in more allocated 3982 * entries than requested. Try to use as much of them as 3983 * possible. 3984 */ 3985 mlxsw_sp_adj_grp_size_round_down(mlxsw_sp, p_adj_grp_size, alloc_size); 3986 3987 return 0; 3988 } 3989 3990 static void 3991 mlxsw_sp_nexthop_group_normalize(struct mlxsw_sp_nexthop_group_info *nhgi) 3992 { 3993 int i, g = 0, sum_norm_weight = 0; 3994 struct mlxsw_sp_nexthop *nh; 3995 3996 for (i = 0; i < nhgi->count; i++) { 3997 nh = &nhgi->nexthops[i]; 3998 3999 if (!nh->should_offload) 4000 continue; 4001 if (g > 0) 4002 g = gcd(nh->nh_weight, g); 4003 else 4004 g = nh->nh_weight; 4005 } 4006 4007 for (i = 0; i < nhgi->count; i++) { 4008 nh = &nhgi->nexthops[i]; 4009 4010 if (!nh->should_offload) 4011 continue; 4012 nh->norm_nh_weight = nh->nh_weight / g; 4013 sum_norm_weight += nh->norm_nh_weight; 4014 } 4015 4016 nhgi->sum_norm_weight = sum_norm_weight; 4017 } 4018 4019 static void 4020 mlxsw_sp_nexthop_group_rebalance(struct mlxsw_sp_nexthop_group_info *nhgi) 4021 { 4022 int i, weight = 0, lower_bound = 0; 4023 int total = nhgi->sum_norm_weight; 4024 u16 ecmp_size = nhgi->ecmp_size; 4025 4026 for (i = 0; i < nhgi->count; i++) { 4027 struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i]; 4028 int upper_bound; 4029 4030 if (!nh->should_offload) 4031 continue; 4032 weight += nh->norm_nh_weight; 4033 upper_bound = DIV_ROUND_CLOSEST(ecmp_size * weight, total); 4034 nh->num_adj_entries = upper_bound - lower_bound; 4035 lower_bound = upper_bound; 4036 } 4037 } 4038 4039 static struct mlxsw_sp_nexthop * 4040 mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp, 4041 const struct mlxsw_sp_rt6 *mlxsw_sp_rt6); 4042 4043 static void 4044 mlxsw_sp_nexthop4_group_offload_refresh(struct mlxsw_sp *mlxsw_sp, 4045 struct mlxsw_sp_nexthop_group *nh_grp) 4046 { 4047 int i; 4048 4049 for (i = 0; i < nh_grp->nhgi->count; i++) { 4050 struct mlxsw_sp_nexthop *nh = &nh_grp->nhgi->nexthops[i]; 4051 4052 if (nh->offloaded) 4053 nh->key.fib_nh->fib_nh_flags |= RTNH_F_OFFLOAD; 4054 else 4055 nh->key.fib_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD; 4056 } 4057 } 4058 4059 static void 4060 __mlxsw_sp_nexthop6_group_offload_refresh(struct mlxsw_sp_nexthop_group *nh_grp, 4061 struct mlxsw_sp_fib6_entry *fib6_entry) 4062 { 4063 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 4064 4065 list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { 4066 struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh; 4067 struct mlxsw_sp_nexthop *nh; 4068 4069 nh = mlxsw_sp_rt6_nexthop(nh_grp, mlxsw_sp_rt6); 4070 if (nh && nh->offloaded) 4071 fib6_nh->fib_nh_flags |= RTNH_F_OFFLOAD; 4072 else 4073 fib6_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD; 4074 } 4075 } 4076 4077 static void 4078 mlxsw_sp_nexthop6_group_offload_refresh(struct mlxsw_sp *mlxsw_sp, 4079 struct mlxsw_sp_nexthop_group *nh_grp) 4080 { 4081 struct mlxsw_sp_fib6_entry *fib6_entry; 4082 4083 /* Unfortunately, in IPv6 the route and the nexthop are described by 4084 * the same struct, so we need to iterate over all the routes using the 4085 * nexthop group and set / clear the offload indication for them. 4086 */ 4087 list_for_each_entry(fib6_entry, &nh_grp->fib_list, 4088 common.nexthop_group_node) 4089 __mlxsw_sp_nexthop6_group_offload_refresh(nh_grp, fib6_entry); 4090 } 4091 4092 static void 4093 mlxsw_sp_nexthop_bucket_offload_refresh(struct mlxsw_sp *mlxsw_sp, 4094 const struct mlxsw_sp_nexthop *nh, 4095 u16 bucket_index) 4096 { 4097 struct mlxsw_sp_nexthop_group *nh_grp = nh->nhgi->nh_grp; 4098 bool offload = false, trap = false; 4099 4100 if (nh->offloaded) { 4101 if (nh->action == MLXSW_SP_NEXTHOP_ACTION_TRAP) 4102 trap = true; 4103 else 4104 offload = true; 4105 } 4106 nexthop_bucket_set_hw_flags(mlxsw_sp_net(mlxsw_sp), nh_grp->obj.id, 4107 bucket_index, offload, trap); 4108 } 4109 4110 static void 4111 mlxsw_sp_nexthop_obj_group_offload_refresh(struct mlxsw_sp *mlxsw_sp, 4112 struct mlxsw_sp_nexthop_group *nh_grp) 4113 { 4114 int i; 4115 4116 /* Do not update the flags if the nexthop group is being destroyed 4117 * since: 4118 * 1. The nexthop objects is being deleted, in which case the flags are 4119 * irrelevant. 4120 * 2. The nexthop group was replaced by a newer group, in which case 4121 * the flags of the nexthop object were already updated based on the 4122 * new group. 4123 */ 4124 if (nh_grp->can_destroy) 4125 return; 4126 4127 nexthop_set_hw_flags(mlxsw_sp_net(mlxsw_sp), nh_grp->obj.id, 4128 nh_grp->nhgi->adj_index_valid, false); 4129 4130 /* Update flags of individual nexthop buckets in case of a resilient 4131 * nexthop group. 4132 */ 4133 if (!nh_grp->nhgi->is_resilient) 4134 return; 4135 4136 for (i = 0; i < nh_grp->nhgi->count; i++) { 4137 struct mlxsw_sp_nexthop *nh = &nh_grp->nhgi->nexthops[i]; 4138 4139 mlxsw_sp_nexthop_bucket_offload_refresh(mlxsw_sp, nh, i); 4140 } 4141 } 4142 4143 static void 4144 mlxsw_sp_nexthop_group_offload_refresh(struct mlxsw_sp *mlxsw_sp, 4145 struct mlxsw_sp_nexthop_group *nh_grp) 4146 { 4147 switch (nh_grp->type) { 4148 case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4: 4149 mlxsw_sp_nexthop4_group_offload_refresh(mlxsw_sp, nh_grp); 4150 break; 4151 case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6: 4152 mlxsw_sp_nexthop6_group_offload_refresh(mlxsw_sp, nh_grp); 4153 break; 4154 case MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ: 4155 mlxsw_sp_nexthop_obj_group_offload_refresh(mlxsw_sp, nh_grp); 4156 break; 4157 } 4158 } 4159 4160 static int 4161 mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, 4162 struct mlxsw_sp_nexthop_group *nh_grp) 4163 { 4164 struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi; 4165 u16 ecmp_size, old_ecmp_size; 4166 struct mlxsw_sp_nexthop *nh; 4167 bool offload_change = false; 4168 u32 adj_index; 4169 bool old_adj_index_valid; 4170 u32 old_adj_index; 4171 int i, err2, err; 4172 4173 if (!nhgi->gateway) 4174 return mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); 4175 4176 for (i = 0; i < nhgi->count; i++) { 4177 nh = &nhgi->nexthops[i]; 4178 4179 if (nh->should_offload != nh->offloaded) { 4180 offload_change = true; 4181 if (nh->should_offload) 4182 nh->update = 1; 4183 } 4184 } 4185 if (!offload_change) { 4186 /* Nothing was added or removed, so no need to reallocate. Just 4187 * update MAC on existing adjacency indexes. 4188 */ 4189 err = mlxsw_sp_nexthop_group_update(mlxsw_sp, nhgi, false); 4190 if (err) { 4191 dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); 4192 goto set_trap; 4193 } 4194 /* Flags of individual nexthop buckets might need to be 4195 * updated. 4196 */ 4197 mlxsw_sp_nexthop_group_offload_refresh(mlxsw_sp, nh_grp); 4198 return 0; 4199 } 4200 mlxsw_sp_nexthop_group_normalize(nhgi); 4201 if (!nhgi->sum_norm_weight) { 4202 /* No neigh of this group is connected so we just set 4203 * the trap and let everthing flow through kernel. 4204 */ 4205 err = 0; 4206 goto set_trap; 4207 } 4208 4209 ecmp_size = nhgi->sum_norm_weight; 4210 err = mlxsw_sp_fix_adj_grp_size(mlxsw_sp, &ecmp_size); 4211 if (err) 4212 /* No valid allocation size available. */ 4213 goto set_trap; 4214 4215 err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 4216 ecmp_size, &adj_index); 4217 if (err) { 4218 /* We ran out of KVD linear space, just set the 4219 * trap and let everything flow through kernel. 4220 */ 4221 dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); 4222 goto set_trap; 4223 } 4224 old_adj_index_valid = nhgi->adj_index_valid; 4225 old_adj_index = nhgi->adj_index; 4226 old_ecmp_size = nhgi->ecmp_size; 4227 nhgi->adj_index_valid = 1; 4228 nhgi->adj_index = adj_index; 4229 nhgi->ecmp_size = ecmp_size; 4230 mlxsw_sp_nexthop_group_rebalance(nhgi); 4231 err = mlxsw_sp_nexthop_group_update(mlxsw_sp, nhgi, true); 4232 if (err) { 4233 dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); 4234 goto set_trap; 4235 } 4236 4237 mlxsw_sp_nexthop_group_offload_refresh(mlxsw_sp, nh_grp); 4238 4239 if (!old_adj_index_valid) { 4240 /* The trap was set for fib entries, so we have to call 4241 * fib entry update to unset it and use adjacency index. 4242 */ 4243 err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); 4244 if (err) { 4245 dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); 4246 goto set_trap; 4247 } 4248 return 0; 4249 } 4250 4251 err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, 4252 old_adj_index, old_ecmp_size); 4253 mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 4254 old_ecmp_size, old_adj_index); 4255 if (err) { 4256 dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); 4257 goto set_trap; 4258 } 4259 4260 return 0; 4261 4262 set_trap: 4263 old_adj_index_valid = nhgi->adj_index_valid; 4264 nhgi->adj_index_valid = 0; 4265 for (i = 0; i < nhgi->count; i++) { 4266 nh = &nhgi->nexthops[i]; 4267 nh->offloaded = 0; 4268 } 4269 err2 = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); 4270 if (err2) 4271 dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); 4272 mlxsw_sp_nexthop_group_offload_refresh(mlxsw_sp, nh_grp); 4273 if (old_adj_index_valid) 4274 mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 4275 nhgi->ecmp_size, nhgi->adj_index); 4276 return err; 4277 } 4278 4279 static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, 4280 bool removing) 4281 { 4282 if (!removing) { 4283 nh->action = MLXSW_SP_NEXTHOP_ACTION_FORWARD; 4284 nh->should_offload = 1; 4285 } else if (nh->nhgi->is_resilient) { 4286 nh->action = MLXSW_SP_NEXTHOP_ACTION_TRAP; 4287 nh->should_offload = 1; 4288 } else { 4289 nh->should_offload = 0; 4290 } 4291 nh->update = 1; 4292 } 4293 4294 static int 4295 mlxsw_sp_nexthop_dead_neigh_replace(struct mlxsw_sp *mlxsw_sp, 4296 struct mlxsw_sp_neigh_entry *neigh_entry) 4297 { 4298 struct neighbour *n, *old_n = neigh_entry->key.n; 4299 struct mlxsw_sp_nexthop *nh; 4300 struct net_device *dev; 4301 bool entry_connected; 4302 u8 nud_state, dead; 4303 int err; 4304 4305 nh = list_first_entry(&neigh_entry->nexthop_list, 4306 struct mlxsw_sp_nexthop, neigh_list_node); 4307 dev = mlxsw_sp_nexthop_dev(nh); 4308 4309 n = neigh_lookup(nh->neigh_tbl, &nh->gw_addr, dev); 4310 if (!n) { 4311 n = neigh_create(nh->neigh_tbl, &nh->gw_addr, dev); 4312 if (IS_ERR(n)) 4313 return PTR_ERR(n); 4314 neigh_event_send(n, NULL); 4315 } 4316 4317 mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); 4318 neigh_entry->key.n = n; 4319 err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); 4320 if (err) 4321 goto err_neigh_entry_insert; 4322 4323 read_lock_bh(&n->lock); 4324 nud_state = n->nud_state; 4325 dead = n->dead; 4326 read_unlock_bh(&n->lock); 4327 entry_connected = nud_state & NUD_VALID && !dead; 4328 4329 list_for_each_entry(nh, &neigh_entry->nexthop_list, 4330 neigh_list_node) { 4331 neigh_release(old_n); 4332 neigh_clone(n); 4333 __mlxsw_sp_nexthop_neigh_update(nh, !entry_connected); 4334 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp); 4335 } 4336 4337 neigh_release(n); 4338 4339 return 0; 4340 4341 err_neigh_entry_insert: 4342 neigh_entry->key.n = old_n; 4343 mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); 4344 neigh_release(n); 4345 return err; 4346 } 4347 4348 static void 4349 mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, 4350 struct mlxsw_sp_neigh_entry *neigh_entry, 4351 bool removing, bool dead) 4352 { 4353 struct mlxsw_sp_nexthop *nh; 4354 4355 if (list_empty(&neigh_entry->nexthop_list)) 4356 return; 4357 4358 if (dead) { 4359 int err; 4360 4361 err = mlxsw_sp_nexthop_dead_neigh_replace(mlxsw_sp, 4362 neigh_entry); 4363 if (err) 4364 dev_err(mlxsw_sp->bus_info->dev, "Failed to replace dead neigh\n"); 4365 return; 4366 } 4367 4368 list_for_each_entry(nh, &neigh_entry->nexthop_list, 4369 neigh_list_node) { 4370 __mlxsw_sp_nexthop_neigh_update(nh, removing); 4371 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp); 4372 } 4373 } 4374 4375 static void mlxsw_sp_nexthop_crif_init(struct mlxsw_sp_nexthop *nh, 4376 struct mlxsw_sp_crif *crif) 4377 { 4378 if (nh->crif) 4379 return; 4380 4381 nh->crif = crif; 4382 list_add(&nh->crif_list_node, &crif->nexthop_list); 4383 } 4384 4385 static void mlxsw_sp_nexthop_crif_fini(struct mlxsw_sp_nexthop *nh) 4386 { 4387 if (!nh->crif) 4388 return; 4389 4390 list_del(&nh->crif_list_node); 4391 nh->crif = NULL; 4392 } 4393 4394 static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, 4395 struct mlxsw_sp_nexthop *nh) 4396 { 4397 struct mlxsw_sp_neigh_entry *neigh_entry; 4398 struct net_device *dev; 4399 struct neighbour *n; 4400 u8 nud_state, dead; 4401 int err; 4402 4403 if (WARN_ON(!nh->crif->rif)) 4404 return 0; 4405 4406 if (!nh->nhgi->gateway || nh->neigh_entry) 4407 return 0; 4408 dev = mlxsw_sp_nexthop_dev(nh); 4409 4410 /* Take a reference of neigh here ensuring that neigh would 4411 * not be destructed before the nexthop entry is finished. 4412 * The reference is taken either in neigh_lookup() or 4413 * in neigh_create() in case n is not found. 4414 */ 4415 n = neigh_lookup(nh->neigh_tbl, &nh->gw_addr, dev); 4416 if (!n) { 4417 n = neigh_create(nh->neigh_tbl, &nh->gw_addr, dev); 4418 if (IS_ERR(n)) 4419 return PTR_ERR(n); 4420 neigh_event_send(n, NULL); 4421 } 4422 neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); 4423 if (!neigh_entry) { 4424 neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); 4425 if (IS_ERR(neigh_entry)) { 4426 err = -EINVAL; 4427 goto err_neigh_entry_create; 4428 } 4429 } 4430 4431 /* If that is the first nexthop connected to that neigh, add to 4432 * nexthop_neighs_list 4433 */ 4434 if (list_empty(&neigh_entry->nexthop_list)) 4435 list_add_tail(&neigh_entry->nexthop_neighs_list_node, 4436 &mlxsw_sp->router->nexthop_neighs_list); 4437 4438 nh->neigh_entry = neigh_entry; 4439 list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); 4440 read_lock_bh(&n->lock); 4441 nud_state = n->nud_state; 4442 dead = n->dead; 4443 read_unlock_bh(&n->lock); 4444 __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); 4445 4446 return 0; 4447 4448 err_neigh_entry_create: 4449 neigh_release(n); 4450 return err; 4451 } 4452 4453 static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, 4454 struct mlxsw_sp_nexthop *nh) 4455 { 4456 struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; 4457 struct neighbour *n; 4458 4459 if (!neigh_entry) 4460 return; 4461 n = neigh_entry->key.n; 4462 4463 __mlxsw_sp_nexthop_neigh_update(nh, true); 4464 list_del(&nh->neigh_list_node); 4465 nh->neigh_entry = NULL; 4466 4467 /* If that is the last nexthop connected to that neigh, remove from 4468 * nexthop_neighs_list 4469 */ 4470 if (list_empty(&neigh_entry->nexthop_list)) 4471 list_del(&neigh_entry->nexthop_neighs_list_node); 4472 4473 if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) 4474 mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); 4475 4476 neigh_release(n); 4477 } 4478 4479 static bool mlxsw_sp_ipip_netdev_ul_up(struct net_device *ol_dev) 4480 { 4481 struct net_device *ul_dev; 4482 bool is_up; 4483 4484 rcu_read_lock(); 4485 ul_dev = mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev); 4486 is_up = ul_dev ? (ul_dev->flags & IFF_UP) : true; 4487 rcu_read_unlock(); 4488 4489 return is_up; 4490 } 4491 4492 static void mlxsw_sp_nexthop_ipip_init(struct mlxsw_sp *mlxsw_sp, 4493 struct mlxsw_sp_nexthop *nh, 4494 struct mlxsw_sp_ipip_entry *ipip_entry) 4495 { 4496 struct mlxsw_sp_crif *crif; 4497 bool removing; 4498 4499 if (!nh->nhgi->gateway || nh->ipip_entry) 4500 return; 4501 4502 crif = mlxsw_sp_crif_lookup(mlxsw_sp->router, ipip_entry->ol_dev); 4503 if (WARN_ON(!crif)) 4504 return; 4505 4506 nh->ipip_entry = ipip_entry; 4507 removing = !mlxsw_sp_ipip_netdev_ul_up(ipip_entry->ol_dev); 4508 __mlxsw_sp_nexthop_neigh_update(nh, removing); 4509 mlxsw_sp_nexthop_crif_init(nh, crif); 4510 } 4511 4512 static void mlxsw_sp_nexthop_ipip_fini(struct mlxsw_sp *mlxsw_sp, 4513 struct mlxsw_sp_nexthop *nh) 4514 { 4515 struct mlxsw_sp_ipip_entry *ipip_entry = nh->ipip_entry; 4516 4517 if (!ipip_entry) 4518 return; 4519 4520 __mlxsw_sp_nexthop_neigh_update(nh, true); 4521 nh->ipip_entry = NULL; 4522 } 4523 4524 static bool mlxsw_sp_nexthop4_ipip_type(const struct mlxsw_sp *mlxsw_sp, 4525 const struct fib_nh *fib_nh, 4526 enum mlxsw_sp_ipip_type *p_ipipt) 4527 { 4528 struct net_device *dev = fib_nh->fib_nh_dev; 4529 4530 return dev && 4531 fib_nh->nh_parent->fib_type == RTN_UNICAST && 4532 mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, p_ipipt); 4533 } 4534 4535 static int mlxsw_sp_nexthop_type_init(struct mlxsw_sp *mlxsw_sp, 4536 struct mlxsw_sp_nexthop *nh, 4537 const struct net_device *dev) 4538 { 4539 const struct mlxsw_sp_ipip_ops *ipip_ops; 4540 struct mlxsw_sp_ipip_entry *ipip_entry; 4541 struct mlxsw_sp_crif *crif; 4542 int err; 4543 4544 ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, dev); 4545 if (ipip_entry) { 4546 ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; 4547 if (ipip_ops->can_offload(mlxsw_sp, dev)) { 4548 nh->type = MLXSW_SP_NEXTHOP_TYPE_IPIP; 4549 mlxsw_sp_nexthop_ipip_init(mlxsw_sp, nh, ipip_entry); 4550 return 0; 4551 } 4552 } 4553 4554 nh->type = MLXSW_SP_NEXTHOP_TYPE_ETH; 4555 crif = mlxsw_sp_crif_lookup(mlxsw_sp->router, dev); 4556 if (!crif) 4557 return 0; 4558 4559 mlxsw_sp_nexthop_crif_init(nh, crif); 4560 4561 if (!crif->rif) 4562 return 0; 4563 4564 err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); 4565 if (err) 4566 goto err_neigh_init; 4567 4568 return 0; 4569 4570 err_neigh_init: 4571 mlxsw_sp_nexthop_crif_fini(nh); 4572 return err; 4573 } 4574 4575 static int mlxsw_sp_nexthop_type_rif_made(struct mlxsw_sp *mlxsw_sp, 4576 struct mlxsw_sp_nexthop *nh) 4577 { 4578 switch (nh->type) { 4579 case MLXSW_SP_NEXTHOP_TYPE_ETH: 4580 return mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); 4581 case MLXSW_SP_NEXTHOP_TYPE_IPIP: 4582 break; 4583 } 4584 4585 return 0; 4586 } 4587 4588 static void mlxsw_sp_nexthop_type_rif_gone(struct mlxsw_sp *mlxsw_sp, 4589 struct mlxsw_sp_nexthop *nh) 4590 { 4591 switch (nh->type) { 4592 case MLXSW_SP_NEXTHOP_TYPE_ETH: 4593 mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); 4594 break; 4595 case MLXSW_SP_NEXTHOP_TYPE_IPIP: 4596 mlxsw_sp_nexthop_ipip_fini(mlxsw_sp, nh); 4597 break; 4598 } 4599 } 4600 4601 static void mlxsw_sp_nexthop_type_fini(struct mlxsw_sp *mlxsw_sp, 4602 struct mlxsw_sp_nexthop *nh) 4603 { 4604 mlxsw_sp_nexthop_type_rif_gone(mlxsw_sp, nh); 4605 mlxsw_sp_nexthop_crif_fini(nh); 4606 } 4607 4608 static int mlxsw_sp_nexthop4_init(struct mlxsw_sp *mlxsw_sp, 4609 struct mlxsw_sp_nexthop_group *nh_grp, 4610 struct mlxsw_sp_nexthop *nh, 4611 struct fib_nh *fib_nh) 4612 { 4613 struct net_device *dev = fib_nh->fib_nh_dev; 4614 struct in_device *in_dev; 4615 int err; 4616 4617 nh->nhgi = nh_grp->nhgi; 4618 nh->key.fib_nh = fib_nh; 4619 #ifdef CONFIG_IP_ROUTE_MULTIPATH 4620 nh->nh_weight = fib_nh->fib_nh_weight; 4621 #else 4622 nh->nh_weight = 1; 4623 #endif 4624 memcpy(&nh->gw_addr, &fib_nh->fib_nh_gw4, sizeof(fib_nh->fib_nh_gw4)); 4625 nh->neigh_tbl = &arp_tbl; 4626 err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); 4627 if (err) 4628 return err; 4629 4630 err = mlxsw_sp_nexthop_counter_enable(mlxsw_sp, nh); 4631 if (err) 4632 goto err_counter_enable; 4633 4634 list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list); 4635 4636 if (!dev) 4637 return 0; 4638 nh->ifindex = dev->ifindex; 4639 4640 rcu_read_lock(); 4641 in_dev = __in_dev_get_rcu(dev); 4642 if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && 4643 fib_nh->fib_nh_flags & RTNH_F_LINKDOWN) { 4644 rcu_read_unlock(); 4645 return 0; 4646 } 4647 rcu_read_unlock(); 4648 4649 err = mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, dev); 4650 if (err) 4651 goto err_nexthop_neigh_init; 4652 4653 return 0; 4654 4655 err_nexthop_neigh_init: 4656 list_del(&nh->router_list_node); 4657 mlxsw_sp_nexthop_counter_disable(mlxsw_sp, nh); 4658 err_counter_enable: 4659 mlxsw_sp_nexthop_remove(mlxsw_sp, nh); 4660 return err; 4661 } 4662 4663 static void mlxsw_sp_nexthop4_fini(struct mlxsw_sp *mlxsw_sp, 4664 struct mlxsw_sp_nexthop *nh) 4665 { 4666 mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); 4667 list_del(&nh->router_list_node); 4668 mlxsw_sp_nexthop_counter_disable(mlxsw_sp, nh); 4669 mlxsw_sp_nexthop_remove(mlxsw_sp, nh); 4670 } 4671 4672 static void mlxsw_sp_nexthop4_event(struct mlxsw_sp *mlxsw_sp, 4673 unsigned long event, struct fib_nh *fib_nh) 4674 { 4675 struct mlxsw_sp_nexthop_key key; 4676 struct mlxsw_sp_nexthop *nh; 4677 4678 key.fib_nh = fib_nh; 4679 nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); 4680 if (!nh) 4681 return; 4682 4683 switch (event) { 4684 case FIB_EVENT_NH_ADD: 4685 mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, fib_nh->fib_nh_dev); 4686 break; 4687 case FIB_EVENT_NH_DEL: 4688 mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); 4689 break; 4690 } 4691 4692 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp); 4693 } 4694 4695 static void mlxsw_sp_nexthop_rif_update(struct mlxsw_sp *mlxsw_sp, 4696 struct mlxsw_sp_rif *rif) 4697 { 4698 struct net_device *dev = mlxsw_sp_rif_dev(rif); 4699 struct mlxsw_sp_nexthop *nh; 4700 bool removing; 4701 4702 list_for_each_entry(nh, &rif->crif->nexthop_list, crif_list_node) { 4703 switch (nh->type) { 4704 case MLXSW_SP_NEXTHOP_TYPE_ETH: 4705 removing = false; 4706 break; 4707 case MLXSW_SP_NEXTHOP_TYPE_IPIP: 4708 removing = !mlxsw_sp_ipip_netdev_ul_up(dev); 4709 break; 4710 default: 4711 WARN_ON(1); 4712 continue; 4713 } 4714 4715 __mlxsw_sp_nexthop_neigh_update(nh, removing); 4716 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp); 4717 } 4718 } 4719 4720 static int mlxsw_sp_nexthop_rif_made_sync(struct mlxsw_sp *mlxsw_sp, 4721 struct mlxsw_sp_rif *rif) 4722 { 4723 struct mlxsw_sp_nexthop *nh, *tmp; 4724 unsigned int n = 0; 4725 int err; 4726 4727 list_for_each_entry_safe(nh, tmp, &rif->crif->nexthop_list, 4728 crif_list_node) { 4729 err = mlxsw_sp_nexthop_type_rif_made(mlxsw_sp, nh); 4730 if (err) 4731 goto err_nexthop_type_rif; 4732 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp); 4733 n++; 4734 } 4735 4736 return 0; 4737 4738 err_nexthop_type_rif: 4739 list_for_each_entry_safe(nh, tmp, &rif->crif->nexthop_list, 4740 crif_list_node) { 4741 if (!n--) 4742 break; 4743 mlxsw_sp_nexthop_type_rif_gone(mlxsw_sp, nh); 4744 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp); 4745 } 4746 return err; 4747 } 4748 4749 static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, 4750 struct mlxsw_sp_rif *rif) 4751 { 4752 struct mlxsw_sp_nexthop *nh, *tmp; 4753 4754 list_for_each_entry_safe(nh, tmp, &rif->crif->nexthop_list, 4755 crif_list_node) { 4756 mlxsw_sp_nexthop_type_rif_gone(mlxsw_sp, nh); 4757 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp); 4758 } 4759 } 4760 4761 static int mlxsw_sp_adj_trap_entry_init(struct mlxsw_sp *mlxsw_sp) 4762 { 4763 enum mlxsw_reg_ratr_trap_action trap_action; 4764 char ratr_pl[MLXSW_REG_RATR_LEN]; 4765 int err; 4766 4767 err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1, 4768 &mlxsw_sp->router->adj_trap_index); 4769 if (err) 4770 return err; 4771 4772 trap_action = MLXSW_REG_RATR_TRAP_ACTION_TRAP; 4773 mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, true, 4774 MLXSW_REG_RATR_TYPE_ETHERNET, 4775 mlxsw_sp->router->adj_trap_index, 4776 mlxsw_sp->router->lb_crif->rif->rif_index); 4777 mlxsw_reg_ratr_trap_action_set(ratr_pl, trap_action); 4778 mlxsw_reg_ratr_trap_id_set(ratr_pl, MLXSW_TRAP_ID_RTR_EGRESS0); 4779 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); 4780 if (err) 4781 goto err_ratr_write; 4782 4783 return 0; 4784 4785 err_ratr_write: 4786 mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1, 4787 mlxsw_sp->router->adj_trap_index); 4788 return err; 4789 } 4790 4791 static void mlxsw_sp_adj_trap_entry_fini(struct mlxsw_sp *mlxsw_sp) 4792 { 4793 mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1, 4794 mlxsw_sp->router->adj_trap_index); 4795 } 4796 4797 static int mlxsw_sp_nexthop_group_inc(struct mlxsw_sp *mlxsw_sp) 4798 { 4799 int err; 4800 4801 if (refcount_inc_not_zero(&mlxsw_sp->router->num_groups)) 4802 return 0; 4803 4804 err = mlxsw_sp_adj_trap_entry_init(mlxsw_sp); 4805 if (err) 4806 return err; 4807 4808 refcount_set(&mlxsw_sp->router->num_groups, 1); 4809 4810 return 0; 4811 } 4812 4813 static void mlxsw_sp_nexthop_group_dec(struct mlxsw_sp *mlxsw_sp) 4814 { 4815 if (!refcount_dec_and_test(&mlxsw_sp->router->num_groups)) 4816 return; 4817 4818 mlxsw_sp_adj_trap_entry_fini(mlxsw_sp); 4819 } 4820 4821 static void 4822 mlxsw_sp_nh_grp_activity_get(struct mlxsw_sp *mlxsw_sp, 4823 const struct mlxsw_sp_nexthop_group *nh_grp, 4824 unsigned long *activity) 4825 { 4826 char *ratrad_pl; 4827 int i, err; 4828 4829 ratrad_pl = kmalloc(MLXSW_REG_RATRAD_LEN, GFP_KERNEL); 4830 if (!ratrad_pl) 4831 return; 4832 4833 mlxsw_reg_ratrad_pack(ratrad_pl, nh_grp->nhgi->adj_index, 4834 nh_grp->nhgi->count); 4835 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ratrad), ratrad_pl); 4836 if (err) 4837 goto out; 4838 4839 for (i = 0; i < nh_grp->nhgi->count; i++) { 4840 if (!mlxsw_reg_ratrad_activity_vector_get(ratrad_pl, i)) 4841 continue; 4842 bitmap_set(activity, i, 1); 4843 } 4844 4845 out: 4846 kfree(ratrad_pl); 4847 } 4848 4849 #define MLXSW_SP_NH_GRP_ACTIVITY_UPDATE_INTERVAL 1000 /* ms */ 4850 4851 static void 4852 mlxsw_sp_nh_grp_activity_update(struct mlxsw_sp *mlxsw_sp, 4853 const struct mlxsw_sp_nexthop_group *nh_grp) 4854 { 4855 unsigned long *activity; 4856 4857 activity = bitmap_zalloc(nh_grp->nhgi->count, GFP_KERNEL); 4858 if (!activity) 4859 return; 4860 4861 mlxsw_sp_nh_grp_activity_get(mlxsw_sp, nh_grp, activity); 4862 nexthop_res_grp_activity_update(mlxsw_sp_net(mlxsw_sp), nh_grp->obj.id, 4863 nh_grp->nhgi->count, activity); 4864 4865 bitmap_free(activity); 4866 } 4867 4868 static void 4869 mlxsw_sp_nh_grp_activity_work_schedule(struct mlxsw_sp *mlxsw_sp) 4870 { 4871 unsigned int interval = MLXSW_SP_NH_GRP_ACTIVITY_UPDATE_INTERVAL; 4872 4873 mlxsw_core_schedule_dw(&mlxsw_sp->router->nh_grp_activity_dw, 4874 msecs_to_jiffies(interval)); 4875 } 4876 4877 static void mlxsw_sp_nh_grp_activity_work(struct work_struct *work) 4878 { 4879 struct mlxsw_sp_nexthop_group_info *nhgi; 4880 struct mlxsw_sp_router *router; 4881 bool reschedule = false; 4882 4883 router = container_of(work, struct mlxsw_sp_router, 4884 nh_grp_activity_dw.work); 4885 4886 mutex_lock(&router->lock); 4887 4888 list_for_each_entry(nhgi, &router->nh_res_grp_list, list) { 4889 mlxsw_sp_nh_grp_activity_update(router->mlxsw_sp, nhgi->nh_grp); 4890 reschedule = true; 4891 } 4892 4893 mutex_unlock(&router->lock); 4894 4895 if (!reschedule) 4896 return; 4897 mlxsw_sp_nh_grp_activity_work_schedule(router->mlxsw_sp); 4898 } 4899 4900 static int 4901 mlxsw_sp_nexthop_obj_single_validate(struct mlxsw_sp *mlxsw_sp, 4902 const struct nh_notifier_single_info *nh, 4903 struct netlink_ext_ack *extack) 4904 { 4905 int err = -EINVAL; 4906 4907 if (nh->is_fdb) 4908 NL_SET_ERR_MSG_MOD(extack, "FDB nexthops are not supported"); 4909 else if (nh->has_encap) 4910 NL_SET_ERR_MSG_MOD(extack, "Encapsulating nexthops are not supported"); 4911 else 4912 err = 0; 4913 4914 return err; 4915 } 4916 4917 static int 4918 mlxsw_sp_nexthop_obj_group_entry_validate(struct mlxsw_sp *mlxsw_sp, 4919 const struct nh_notifier_single_info *nh, 4920 struct netlink_ext_ack *extack) 4921 { 4922 int err; 4923 4924 err = mlxsw_sp_nexthop_obj_single_validate(mlxsw_sp, nh, extack); 4925 if (err) 4926 return err; 4927 4928 /* Device only nexthops with an IPIP device are programmed as 4929 * encapsulating adjacency entries. 4930 */ 4931 if (!nh->gw_family && !nh->is_reject && 4932 !mlxsw_sp_netdev_ipip_type(mlxsw_sp, nh->dev, NULL)) { 4933 NL_SET_ERR_MSG_MOD(extack, "Nexthop group entry does not have a gateway"); 4934 return -EINVAL; 4935 } 4936 4937 return 0; 4938 } 4939 4940 static int 4941 mlxsw_sp_nexthop_obj_group_validate(struct mlxsw_sp *mlxsw_sp, 4942 const struct nh_notifier_grp_info *nh_grp, 4943 struct netlink_ext_ack *extack) 4944 { 4945 int i; 4946 4947 if (nh_grp->is_fdb) { 4948 NL_SET_ERR_MSG_MOD(extack, "FDB nexthop groups are not supported"); 4949 return -EINVAL; 4950 } 4951 4952 for (i = 0; i < nh_grp->num_nh; i++) { 4953 const struct nh_notifier_single_info *nh; 4954 int err; 4955 4956 nh = &nh_grp->nh_entries[i].nh; 4957 err = mlxsw_sp_nexthop_obj_group_entry_validate(mlxsw_sp, nh, 4958 extack); 4959 if (err) 4960 return err; 4961 } 4962 4963 return 0; 4964 } 4965 4966 static int 4967 mlxsw_sp_nexthop_obj_res_group_size_validate(struct mlxsw_sp *mlxsw_sp, 4968 const struct nh_notifier_res_table_info *nh_res_table, 4969 struct netlink_ext_ack *extack) 4970 { 4971 unsigned int alloc_size; 4972 bool valid_size = false; 4973 int err, i; 4974 4975 if (nh_res_table->num_nh_buckets < 32) { 4976 NL_SET_ERR_MSG_MOD(extack, "Minimum number of buckets is 32"); 4977 return -EINVAL; 4978 } 4979 4980 for (i = 0; i < mlxsw_sp->router->adj_grp_size_ranges_count; i++) { 4981 const struct mlxsw_sp_adj_grp_size_range *size_range; 4982 4983 size_range = &mlxsw_sp->router->adj_grp_size_ranges[i]; 4984 4985 if (nh_res_table->num_nh_buckets >= size_range->start && 4986 nh_res_table->num_nh_buckets <= size_range->end) { 4987 valid_size = true; 4988 break; 4989 } 4990 } 4991 4992 if (!valid_size) { 4993 NL_SET_ERR_MSG_MOD(extack, "Invalid number of buckets"); 4994 return -EINVAL; 4995 } 4996 4997 err = mlxsw_sp_kvdl_alloc_count_query(mlxsw_sp, 4998 MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 4999 nh_res_table->num_nh_buckets, 5000 &alloc_size); 5001 if (err || nh_res_table->num_nh_buckets != alloc_size) { 5002 NL_SET_ERR_MSG_MOD(extack, "Number of buckets does not fit allocation size of any KVDL partition"); 5003 return -EINVAL; 5004 } 5005 5006 return 0; 5007 } 5008 5009 static int 5010 mlxsw_sp_nexthop_obj_res_group_validate(struct mlxsw_sp *mlxsw_sp, 5011 const struct nh_notifier_res_table_info *nh_res_table, 5012 struct netlink_ext_ack *extack) 5013 { 5014 int err; 5015 u16 i; 5016 5017 err = mlxsw_sp_nexthop_obj_res_group_size_validate(mlxsw_sp, 5018 nh_res_table, 5019 extack); 5020 if (err) 5021 return err; 5022 5023 for (i = 0; i < nh_res_table->num_nh_buckets; i++) { 5024 const struct nh_notifier_single_info *nh; 5025 int err; 5026 5027 nh = &nh_res_table->nhs[i]; 5028 err = mlxsw_sp_nexthop_obj_group_entry_validate(mlxsw_sp, nh, 5029 extack); 5030 if (err) 5031 return err; 5032 } 5033 5034 return 0; 5035 } 5036 5037 static int mlxsw_sp_nexthop_obj_validate(struct mlxsw_sp *mlxsw_sp, 5038 unsigned long event, 5039 struct nh_notifier_info *info) 5040 { 5041 struct nh_notifier_single_info *nh; 5042 5043 if (event != NEXTHOP_EVENT_REPLACE && 5044 event != NEXTHOP_EVENT_RES_TABLE_PRE_REPLACE && 5045 event != NEXTHOP_EVENT_BUCKET_REPLACE) 5046 return 0; 5047 5048 switch (info->type) { 5049 case NH_NOTIFIER_INFO_TYPE_SINGLE: 5050 return mlxsw_sp_nexthop_obj_single_validate(mlxsw_sp, info->nh, 5051 info->extack); 5052 case NH_NOTIFIER_INFO_TYPE_GRP: 5053 return mlxsw_sp_nexthop_obj_group_validate(mlxsw_sp, 5054 info->nh_grp, 5055 info->extack); 5056 case NH_NOTIFIER_INFO_TYPE_RES_TABLE: 5057 return mlxsw_sp_nexthop_obj_res_group_validate(mlxsw_sp, 5058 info->nh_res_table, 5059 info->extack); 5060 case NH_NOTIFIER_INFO_TYPE_RES_BUCKET: 5061 nh = &info->nh_res_bucket->new_nh; 5062 return mlxsw_sp_nexthop_obj_group_entry_validate(mlxsw_sp, nh, 5063 info->extack); 5064 default: 5065 NL_SET_ERR_MSG_MOD(info->extack, "Unsupported nexthop type"); 5066 return -EOPNOTSUPP; 5067 } 5068 } 5069 5070 static bool mlxsw_sp_nexthop_obj_is_gateway(struct mlxsw_sp *mlxsw_sp, 5071 const struct nh_notifier_info *info) 5072 { 5073 const struct net_device *dev; 5074 5075 switch (info->type) { 5076 case NH_NOTIFIER_INFO_TYPE_SINGLE: 5077 dev = info->nh->dev; 5078 return info->nh->gw_family || info->nh->is_reject || 5079 mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL); 5080 case NH_NOTIFIER_INFO_TYPE_GRP: 5081 case NH_NOTIFIER_INFO_TYPE_RES_TABLE: 5082 /* Already validated earlier. */ 5083 return true; 5084 default: 5085 return false; 5086 } 5087 } 5088 5089 static void mlxsw_sp_nexthop_obj_blackhole_init(struct mlxsw_sp *mlxsw_sp, 5090 struct mlxsw_sp_nexthop *nh) 5091 { 5092 nh->action = MLXSW_SP_NEXTHOP_ACTION_DISCARD; 5093 nh->should_offload = 1; 5094 /* While nexthops that discard packets do not forward packets 5095 * via an egress RIF, they still need to be programmed using a 5096 * valid RIF, so use the loopback RIF created during init. 5097 */ 5098 nh->crif = mlxsw_sp->router->lb_crif; 5099 } 5100 5101 static void mlxsw_sp_nexthop_obj_blackhole_fini(struct mlxsw_sp *mlxsw_sp, 5102 struct mlxsw_sp_nexthop *nh) 5103 { 5104 nh->crif = NULL; 5105 nh->should_offload = 0; 5106 } 5107 5108 static int 5109 mlxsw_sp_nexthop_obj_init(struct mlxsw_sp *mlxsw_sp, 5110 struct mlxsw_sp_nexthop_group *nh_grp, 5111 struct mlxsw_sp_nexthop *nh, 5112 struct nh_notifier_single_info *nh_obj, int weight) 5113 { 5114 struct net_device *dev = nh_obj->dev; 5115 int err; 5116 5117 nh->nhgi = nh_grp->nhgi; 5118 nh->nh_weight = weight; 5119 5120 switch (nh_obj->gw_family) { 5121 case AF_INET: 5122 memcpy(&nh->gw_addr, &nh_obj->ipv4, sizeof(nh_obj->ipv4)); 5123 nh->neigh_tbl = &arp_tbl; 5124 break; 5125 case AF_INET6: 5126 memcpy(&nh->gw_addr, &nh_obj->ipv6, sizeof(nh_obj->ipv6)); 5127 #if IS_ENABLED(CONFIG_IPV6) 5128 nh->neigh_tbl = &nd_tbl; 5129 #endif 5130 break; 5131 } 5132 5133 list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list); 5134 nh->ifindex = dev->ifindex; 5135 nh->id = nh_obj->id; 5136 5137 err = mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, dev); 5138 if (err) 5139 goto err_type_init; 5140 5141 if (nh_obj->is_reject) 5142 mlxsw_sp_nexthop_obj_blackhole_init(mlxsw_sp, nh); 5143 5144 /* In a resilient nexthop group, all the nexthops must be written to 5145 * the adjacency table. Even if they do not have a valid neighbour or 5146 * RIF. 5147 */ 5148 if (nh_grp->nhgi->is_resilient && !nh->should_offload) { 5149 nh->action = MLXSW_SP_NEXTHOP_ACTION_TRAP; 5150 nh->should_offload = 1; 5151 } 5152 5153 return 0; 5154 5155 err_type_init: 5156 list_del(&nh->router_list_node); 5157 return err; 5158 } 5159 5160 static void mlxsw_sp_nexthop_obj_fini(struct mlxsw_sp *mlxsw_sp, 5161 struct mlxsw_sp_nexthop *nh) 5162 { 5163 if (nh->action == MLXSW_SP_NEXTHOP_ACTION_DISCARD) 5164 mlxsw_sp_nexthop_obj_blackhole_fini(mlxsw_sp, nh); 5165 mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); 5166 list_del(&nh->router_list_node); 5167 mlxsw_sp_nexthop_counter_disable(mlxsw_sp, nh); 5168 nh->should_offload = 0; 5169 } 5170 5171 static int 5172 mlxsw_sp_nexthop_obj_group_info_init(struct mlxsw_sp *mlxsw_sp, 5173 struct mlxsw_sp_nexthop_group *nh_grp, 5174 struct nh_notifier_info *info) 5175 { 5176 struct mlxsw_sp_nexthop_group_info *nhgi; 5177 struct mlxsw_sp_nexthop *nh; 5178 bool is_resilient = false; 5179 bool hw_stats = false; 5180 unsigned int nhs; 5181 int err, i; 5182 5183 switch (info->type) { 5184 case NH_NOTIFIER_INFO_TYPE_SINGLE: 5185 nhs = 1; 5186 break; 5187 case NH_NOTIFIER_INFO_TYPE_GRP: 5188 nhs = info->nh_grp->num_nh; 5189 hw_stats = info->nh_grp->hw_stats; 5190 break; 5191 case NH_NOTIFIER_INFO_TYPE_RES_TABLE: 5192 nhs = info->nh_res_table->num_nh_buckets; 5193 hw_stats = info->nh_res_table->hw_stats; 5194 is_resilient = true; 5195 break; 5196 default: 5197 return -EINVAL; 5198 } 5199 5200 nhgi = kzalloc(struct_size(nhgi, nexthops, nhs), GFP_KERNEL); 5201 if (!nhgi) 5202 return -ENOMEM; 5203 nh_grp->nhgi = nhgi; 5204 nhgi->nh_grp = nh_grp; 5205 nhgi->gateway = mlxsw_sp_nexthop_obj_is_gateway(mlxsw_sp, info); 5206 nhgi->is_resilient = is_resilient; 5207 nhgi->count = nhs; 5208 nhgi->hw_stats = hw_stats; 5209 5210 xa_init_flags(&nhgi->nexthop_counters, XA_FLAGS_ALLOC1); 5211 5212 for (i = 0; i < nhgi->count; i++) { 5213 struct nh_notifier_single_info *nh_obj; 5214 int weight; 5215 5216 nh = &nhgi->nexthops[i]; 5217 switch (info->type) { 5218 case NH_NOTIFIER_INFO_TYPE_SINGLE: 5219 nh_obj = info->nh; 5220 weight = 1; 5221 break; 5222 case NH_NOTIFIER_INFO_TYPE_GRP: 5223 nh_obj = &info->nh_grp->nh_entries[i].nh; 5224 weight = info->nh_grp->nh_entries[i].weight; 5225 break; 5226 case NH_NOTIFIER_INFO_TYPE_RES_TABLE: 5227 nh_obj = &info->nh_res_table->nhs[i]; 5228 weight = 1; 5229 break; 5230 default: 5231 err = -EINVAL; 5232 goto err_nexthop_obj_init; 5233 } 5234 err = mlxsw_sp_nexthop_obj_init(mlxsw_sp, nh_grp, nh, nh_obj, 5235 weight); 5236 if (err) 5237 goto err_nexthop_obj_init; 5238 } 5239 err = mlxsw_sp_nexthop_group_inc(mlxsw_sp); 5240 if (err) 5241 goto err_group_inc; 5242 err = mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); 5243 if (err) { 5244 NL_SET_ERR_MSG_MOD(info->extack, "Failed to write adjacency entries to the device"); 5245 goto err_group_refresh; 5246 } 5247 5248 /* Add resilient nexthop groups to a list so that the activity of their 5249 * nexthop buckets will be periodically queried and cleared. 5250 */ 5251 if (nhgi->is_resilient) { 5252 if (list_empty(&mlxsw_sp->router->nh_res_grp_list)) 5253 mlxsw_sp_nh_grp_activity_work_schedule(mlxsw_sp); 5254 list_add(&nhgi->list, &mlxsw_sp->router->nh_res_grp_list); 5255 } 5256 5257 return 0; 5258 5259 err_group_refresh: 5260 mlxsw_sp_nexthop_group_dec(mlxsw_sp); 5261 err_group_inc: 5262 i = nhgi->count; 5263 err_nexthop_obj_init: 5264 for (i--; i >= 0; i--) { 5265 nh = &nhgi->nexthops[i]; 5266 mlxsw_sp_nexthop_obj_fini(mlxsw_sp, nh); 5267 } 5268 kfree(nhgi); 5269 return err; 5270 } 5271 5272 static void 5273 mlxsw_sp_nexthop_obj_group_info_fini(struct mlxsw_sp *mlxsw_sp, 5274 struct mlxsw_sp_nexthop_group *nh_grp) 5275 { 5276 struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi; 5277 struct mlxsw_sp_router *router = mlxsw_sp->router; 5278 int i; 5279 5280 if (nhgi->is_resilient) { 5281 list_del(&nhgi->list); 5282 if (list_empty(&mlxsw_sp->router->nh_res_grp_list)) 5283 cancel_delayed_work(&router->nh_grp_activity_dw); 5284 } 5285 5286 mlxsw_sp_nexthop_group_dec(mlxsw_sp); 5287 for (i = nhgi->count - 1; i >= 0; i--) { 5288 struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i]; 5289 5290 mlxsw_sp_nexthop_obj_fini(mlxsw_sp, nh); 5291 } 5292 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); 5293 WARN_ON_ONCE(nhgi->adj_index_valid); 5294 WARN_ON(!xa_empty(&nhgi->nexthop_counters)); 5295 xa_destroy(&nhgi->nexthop_counters); 5296 kfree(nhgi); 5297 } 5298 5299 static struct mlxsw_sp_nexthop_group * 5300 mlxsw_sp_nexthop_obj_group_create(struct mlxsw_sp *mlxsw_sp, 5301 struct nh_notifier_info *info) 5302 { 5303 struct mlxsw_sp_nexthop_group *nh_grp; 5304 int err; 5305 5306 nh_grp = kzalloc(sizeof(*nh_grp), GFP_KERNEL); 5307 if (!nh_grp) 5308 return ERR_PTR(-ENOMEM); 5309 INIT_LIST_HEAD(&nh_grp->vr_list); 5310 err = rhashtable_init(&nh_grp->vr_ht, 5311 &mlxsw_sp_nexthop_group_vr_ht_params); 5312 if (err) 5313 goto err_nexthop_group_vr_ht_init; 5314 INIT_LIST_HEAD(&nh_grp->fib_list); 5315 nh_grp->type = MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ; 5316 nh_grp->obj.id = info->id; 5317 5318 err = mlxsw_sp_nexthop_obj_group_info_init(mlxsw_sp, nh_grp, info); 5319 if (err) 5320 goto err_nexthop_group_info_init; 5321 5322 nh_grp->can_destroy = false; 5323 5324 return nh_grp; 5325 5326 err_nexthop_group_info_init: 5327 rhashtable_destroy(&nh_grp->vr_ht); 5328 err_nexthop_group_vr_ht_init: 5329 kfree(nh_grp); 5330 return ERR_PTR(err); 5331 } 5332 5333 static void 5334 mlxsw_sp_nexthop_obj_group_destroy(struct mlxsw_sp *mlxsw_sp, 5335 struct mlxsw_sp_nexthop_group *nh_grp) 5336 { 5337 if (!nh_grp->can_destroy) 5338 return; 5339 mlxsw_sp_nexthop_obj_group_info_fini(mlxsw_sp, nh_grp); 5340 WARN_ON_ONCE(!list_empty(&nh_grp->fib_list)); 5341 WARN_ON_ONCE(!list_empty(&nh_grp->vr_list)); 5342 rhashtable_destroy(&nh_grp->vr_ht); 5343 kfree(nh_grp); 5344 } 5345 5346 static struct mlxsw_sp_nexthop_group * 5347 mlxsw_sp_nexthop_obj_group_lookup(struct mlxsw_sp *mlxsw_sp, u32 id) 5348 { 5349 struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg; 5350 5351 cmp_arg.type = MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ; 5352 cmp_arg.id = id; 5353 return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht, 5354 &cmp_arg, 5355 mlxsw_sp_nexthop_group_ht_params); 5356 } 5357 5358 static int mlxsw_sp_nexthop_obj_group_add(struct mlxsw_sp *mlxsw_sp, 5359 struct mlxsw_sp_nexthop_group *nh_grp) 5360 { 5361 return mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); 5362 } 5363 5364 static int 5365 mlxsw_sp_nexthop_obj_group_replace(struct mlxsw_sp *mlxsw_sp, 5366 struct mlxsw_sp_nexthop_group *nh_grp, 5367 struct mlxsw_sp_nexthop_group *old_nh_grp, 5368 struct netlink_ext_ack *extack) 5369 { 5370 struct mlxsw_sp_nexthop_group_info *old_nhgi = old_nh_grp->nhgi; 5371 struct mlxsw_sp_nexthop_group_info *new_nhgi = nh_grp->nhgi; 5372 int err; 5373 5374 old_nh_grp->nhgi = new_nhgi; 5375 new_nhgi->nh_grp = old_nh_grp; 5376 nh_grp->nhgi = old_nhgi; 5377 old_nhgi->nh_grp = nh_grp; 5378 5379 if (old_nhgi->adj_index_valid && new_nhgi->adj_index_valid) { 5380 /* Both the old adjacency index and the new one are valid. 5381 * Routes are currently using the old one. Tell the device to 5382 * replace the old adjacency index with the new one. 5383 */ 5384 err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, old_nh_grp, 5385 old_nhgi->adj_index, 5386 old_nhgi->ecmp_size); 5387 if (err) { 5388 NL_SET_ERR_MSG_MOD(extack, "Failed to replace old adjacency index with new one"); 5389 goto err_out; 5390 } 5391 } else if (old_nhgi->adj_index_valid && !new_nhgi->adj_index_valid) { 5392 /* The old adjacency index is valid, while the new one is not. 5393 * Iterate over all the routes using the group and change them 5394 * to trap packets to the CPU. 5395 */ 5396 err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, old_nh_grp); 5397 if (err) { 5398 NL_SET_ERR_MSG_MOD(extack, "Failed to update routes to trap packets"); 5399 goto err_out; 5400 } 5401 } else if (!old_nhgi->adj_index_valid && new_nhgi->adj_index_valid) { 5402 /* The old adjacency index is invalid, while the new one is. 5403 * Iterate over all the routes using the group and change them 5404 * to forward packets using the new valid index. 5405 */ 5406 err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, old_nh_grp); 5407 if (err) { 5408 NL_SET_ERR_MSG_MOD(extack, "Failed to update routes to forward packets"); 5409 goto err_out; 5410 } 5411 } 5412 5413 /* Make sure the flags are set / cleared based on the new nexthop group 5414 * information. 5415 */ 5416 mlxsw_sp_nexthop_obj_group_offload_refresh(mlxsw_sp, old_nh_grp); 5417 5418 /* At this point 'nh_grp' is just a shell that is not used by anyone 5419 * and its nexthop group info is the old info that was just replaced 5420 * with the new one. Remove it. 5421 */ 5422 nh_grp->can_destroy = true; 5423 mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp); 5424 5425 return 0; 5426 5427 err_out: 5428 old_nhgi->nh_grp = old_nh_grp; 5429 nh_grp->nhgi = new_nhgi; 5430 new_nhgi->nh_grp = nh_grp; 5431 old_nh_grp->nhgi = old_nhgi; 5432 return err; 5433 } 5434 5435 static int mlxsw_sp_nexthop_obj_res_group_pre(struct mlxsw_sp *mlxsw_sp, 5436 struct nh_notifier_info *info) 5437 { 5438 struct nh_notifier_grp_info *grp_info = info->nh_grp; 5439 struct mlxsw_sp_nexthop_group_info *nhgi; 5440 struct mlxsw_sp_nexthop_group *nh_grp; 5441 int err; 5442 int i; 5443 5444 nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, info->id); 5445 if (!nh_grp) 5446 return 0; 5447 nhgi = nh_grp->nhgi; 5448 5449 if (nhgi->hw_stats == grp_info->hw_stats) 5450 return 0; 5451 5452 nhgi->hw_stats = grp_info->hw_stats; 5453 5454 for (i = 0; i < nhgi->count; i++) { 5455 struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i]; 5456 5457 if (nh->offloaded) 5458 nh->update = 1; 5459 } 5460 5461 err = mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); 5462 if (err) 5463 goto err_group_refresh; 5464 5465 return 0; 5466 5467 err_group_refresh: 5468 nhgi->hw_stats = !grp_info->hw_stats; 5469 return err; 5470 } 5471 5472 static int mlxsw_sp_nexthop_obj_new(struct mlxsw_sp *mlxsw_sp, 5473 struct nh_notifier_info *info) 5474 { 5475 struct mlxsw_sp_nexthop_group *nh_grp, *old_nh_grp; 5476 struct netlink_ext_ack *extack = info->extack; 5477 int err; 5478 5479 nh_grp = mlxsw_sp_nexthop_obj_group_create(mlxsw_sp, info); 5480 if (IS_ERR(nh_grp)) 5481 return PTR_ERR(nh_grp); 5482 5483 old_nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, info->id); 5484 if (!old_nh_grp) 5485 err = mlxsw_sp_nexthop_obj_group_add(mlxsw_sp, nh_grp); 5486 else 5487 err = mlxsw_sp_nexthop_obj_group_replace(mlxsw_sp, nh_grp, 5488 old_nh_grp, extack); 5489 5490 if (err) { 5491 nh_grp->can_destroy = true; 5492 mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp); 5493 } 5494 5495 return err; 5496 } 5497 5498 static void mlxsw_sp_nexthop_obj_del(struct mlxsw_sp *mlxsw_sp, 5499 struct nh_notifier_info *info) 5500 { 5501 struct mlxsw_sp_nexthop_group *nh_grp; 5502 5503 nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, info->id); 5504 if (!nh_grp) 5505 return; 5506 5507 nh_grp->can_destroy = true; 5508 mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); 5509 5510 /* If the group still has routes using it, then defer the delete 5511 * operation until the last route using it is deleted. 5512 */ 5513 if (!list_empty(&nh_grp->fib_list)) 5514 return; 5515 mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp); 5516 } 5517 5518 static int mlxsw_sp_nexthop_obj_bucket_query(struct mlxsw_sp *mlxsw_sp, 5519 u32 adj_index, char *ratr_pl) 5520 { 5521 MLXSW_REG_ZERO(ratr, ratr_pl); 5522 mlxsw_reg_ratr_op_set(ratr_pl, MLXSW_REG_RATR_OP_QUERY_READ); 5523 mlxsw_reg_ratr_adjacency_index_low_set(ratr_pl, adj_index); 5524 mlxsw_reg_ratr_adjacency_index_high_set(ratr_pl, adj_index >> 16); 5525 5526 return mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); 5527 } 5528 5529 static int mlxsw_sp_nexthop_obj_bucket_compare(char *ratr_pl, char *ratr_pl_new) 5530 { 5531 /* Clear the opcode and activity on both the old and new payload as 5532 * they are irrelevant for the comparison. 5533 */ 5534 mlxsw_reg_ratr_op_set(ratr_pl, MLXSW_REG_RATR_OP_QUERY_READ); 5535 mlxsw_reg_ratr_a_set(ratr_pl, 0); 5536 mlxsw_reg_ratr_op_set(ratr_pl_new, MLXSW_REG_RATR_OP_QUERY_READ); 5537 mlxsw_reg_ratr_a_set(ratr_pl_new, 0); 5538 5539 /* If the contents of the adjacency entry are consistent with the 5540 * replacement request, then replacement was successful. 5541 */ 5542 if (!memcmp(ratr_pl, ratr_pl_new, MLXSW_REG_RATR_LEN)) 5543 return 0; 5544 5545 return -EINVAL; 5546 } 5547 5548 static int 5549 mlxsw_sp_nexthop_obj_bucket_adj_update(struct mlxsw_sp *mlxsw_sp, 5550 struct mlxsw_sp_nexthop *nh, 5551 struct nh_notifier_info *info) 5552 { 5553 u16 bucket_index = info->nh_res_bucket->bucket_index; 5554 struct netlink_ext_ack *extack = info->extack; 5555 bool force = info->nh_res_bucket->force; 5556 char ratr_pl_new[MLXSW_REG_RATR_LEN]; 5557 char ratr_pl[MLXSW_REG_RATR_LEN]; 5558 u32 adj_index; 5559 int err; 5560 5561 /* No point in trying an atomic replacement if the idle timer interval 5562 * is smaller than the interval in which we query and clear activity. 5563 */ 5564 if (!force && info->nh_res_bucket->idle_timer_ms < 5565 MLXSW_SP_NH_GRP_ACTIVITY_UPDATE_INTERVAL) 5566 force = true; 5567 5568 adj_index = nh->nhgi->adj_index + bucket_index; 5569 err = mlxsw_sp_nexthop_update(mlxsw_sp, adj_index, nh, force, ratr_pl); 5570 if (err) { 5571 NL_SET_ERR_MSG_MOD(extack, "Failed to overwrite nexthop bucket"); 5572 return err; 5573 } 5574 5575 if (!force) { 5576 err = mlxsw_sp_nexthop_obj_bucket_query(mlxsw_sp, adj_index, 5577 ratr_pl_new); 5578 if (err) { 5579 NL_SET_ERR_MSG_MOD(extack, "Failed to query nexthop bucket state after replacement. State might be inconsistent"); 5580 return err; 5581 } 5582 5583 err = mlxsw_sp_nexthop_obj_bucket_compare(ratr_pl, ratr_pl_new); 5584 if (err) { 5585 NL_SET_ERR_MSG_MOD(extack, "Nexthop bucket was not replaced because it was active during replacement"); 5586 return err; 5587 } 5588 } 5589 5590 nh->update = 0; 5591 nh->offloaded = 1; 5592 mlxsw_sp_nexthop_bucket_offload_refresh(mlxsw_sp, nh, bucket_index); 5593 5594 return 0; 5595 } 5596 5597 static int mlxsw_sp_nexthop_obj_bucket_replace(struct mlxsw_sp *mlxsw_sp, 5598 struct nh_notifier_info *info) 5599 { 5600 u16 bucket_index = info->nh_res_bucket->bucket_index; 5601 struct netlink_ext_ack *extack = info->extack; 5602 struct mlxsw_sp_nexthop_group_info *nhgi; 5603 struct nh_notifier_single_info *nh_obj; 5604 struct mlxsw_sp_nexthop_group *nh_grp; 5605 struct mlxsw_sp_nexthop *nh; 5606 int err; 5607 5608 nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, info->id); 5609 if (!nh_grp) { 5610 NL_SET_ERR_MSG_MOD(extack, "Nexthop group was not found"); 5611 return -EINVAL; 5612 } 5613 5614 nhgi = nh_grp->nhgi; 5615 5616 if (bucket_index >= nhgi->count) { 5617 NL_SET_ERR_MSG_MOD(extack, "Nexthop bucket index out of range"); 5618 return -EINVAL; 5619 } 5620 5621 nh = &nhgi->nexthops[bucket_index]; 5622 mlxsw_sp_nexthop_obj_fini(mlxsw_sp, nh); 5623 5624 nh_obj = &info->nh_res_bucket->new_nh; 5625 err = mlxsw_sp_nexthop_obj_init(mlxsw_sp, nh_grp, nh, nh_obj, 1); 5626 if (err) { 5627 NL_SET_ERR_MSG_MOD(extack, "Failed to initialize nexthop object for nexthop bucket replacement"); 5628 goto err_nexthop_obj_init; 5629 } 5630 5631 err = mlxsw_sp_nexthop_obj_bucket_adj_update(mlxsw_sp, nh, info); 5632 if (err) 5633 goto err_nexthop_obj_bucket_adj_update; 5634 5635 return 0; 5636 5637 err_nexthop_obj_bucket_adj_update: 5638 mlxsw_sp_nexthop_obj_fini(mlxsw_sp, nh); 5639 err_nexthop_obj_init: 5640 nh_obj = &info->nh_res_bucket->old_nh; 5641 mlxsw_sp_nexthop_obj_init(mlxsw_sp, nh_grp, nh, nh_obj, 1); 5642 /* The old adjacency entry was not overwritten */ 5643 nh->update = 0; 5644 nh->offloaded = 1; 5645 return err; 5646 } 5647 5648 static void 5649 mlxsw_sp_nexthop_obj_mp_hw_stats_get(struct mlxsw_sp *mlxsw_sp, 5650 struct mlxsw_sp_nexthop_group_info *nhgi, 5651 struct nh_notifier_grp_hw_stats_info *info) 5652 { 5653 int nhi; 5654 5655 for (nhi = 0; nhi < info->num_nh; nhi++) { 5656 struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[nhi]; 5657 u64 packets; 5658 int err; 5659 5660 err = mlxsw_sp_nexthop_counter_get(mlxsw_sp, nh, &packets); 5661 if (err) 5662 continue; 5663 5664 nh_grp_hw_stats_report_delta(info, nhi, packets); 5665 } 5666 } 5667 5668 static void 5669 mlxsw_sp_nexthop_obj_res_hw_stats_get(struct mlxsw_sp *mlxsw_sp, 5670 struct mlxsw_sp_nexthop_group_info *nhgi, 5671 struct nh_notifier_grp_hw_stats_info *info) 5672 { 5673 int nhi = -1; 5674 int bucket; 5675 5676 for (bucket = 0; bucket < nhgi->count; bucket++) { 5677 struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[bucket]; 5678 u64 packets; 5679 int err; 5680 5681 if (nhi == -1 || info->stats[nhi].id != nh->id) { 5682 for (nhi = 0; nhi < info->num_nh; nhi++) 5683 if (info->stats[nhi].id == nh->id) 5684 break; 5685 if (WARN_ON_ONCE(nhi == info->num_nh)) { 5686 nhi = -1; 5687 continue; 5688 } 5689 } 5690 5691 err = mlxsw_sp_nexthop_counter_get(mlxsw_sp, nh, &packets); 5692 if (err) 5693 continue; 5694 5695 nh_grp_hw_stats_report_delta(info, nhi, packets); 5696 } 5697 } 5698 5699 static void mlxsw_sp_nexthop_obj_hw_stats_get(struct mlxsw_sp *mlxsw_sp, 5700 struct nh_notifier_info *info) 5701 { 5702 struct mlxsw_sp_nexthop_group_info *nhgi; 5703 struct mlxsw_sp_nexthop_group *nh_grp; 5704 5705 if (info->type != NH_NOTIFIER_INFO_TYPE_GRP_HW_STATS) 5706 return; 5707 5708 nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, info->id); 5709 if (!nh_grp) 5710 return; 5711 nhgi = nh_grp->nhgi; 5712 5713 if (nhgi->is_resilient) 5714 mlxsw_sp_nexthop_obj_res_hw_stats_get(mlxsw_sp, nhgi, 5715 info->nh_grp_hw_stats); 5716 else 5717 mlxsw_sp_nexthop_obj_mp_hw_stats_get(mlxsw_sp, nhgi, 5718 info->nh_grp_hw_stats); 5719 } 5720 5721 static int mlxsw_sp_nexthop_obj_event(struct notifier_block *nb, 5722 unsigned long event, void *ptr) 5723 { 5724 struct nh_notifier_info *info = ptr; 5725 struct mlxsw_sp_router *router; 5726 int err = 0; 5727 5728 router = container_of(nb, struct mlxsw_sp_router, nexthop_nb); 5729 err = mlxsw_sp_nexthop_obj_validate(router->mlxsw_sp, event, info); 5730 if (err) 5731 goto out; 5732 5733 mutex_lock(&router->lock); 5734 5735 switch (event) { 5736 case NEXTHOP_EVENT_RES_TABLE_PRE_REPLACE: 5737 err = mlxsw_sp_nexthop_obj_res_group_pre(router->mlxsw_sp, 5738 info); 5739 break; 5740 case NEXTHOP_EVENT_REPLACE: 5741 err = mlxsw_sp_nexthop_obj_new(router->mlxsw_sp, info); 5742 break; 5743 case NEXTHOP_EVENT_DEL: 5744 mlxsw_sp_nexthop_obj_del(router->mlxsw_sp, info); 5745 break; 5746 case NEXTHOP_EVENT_BUCKET_REPLACE: 5747 err = mlxsw_sp_nexthop_obj_bucket_replace(router->mlxsw_sp, 5748 info); 5749 break; 5750 case NEXTHOP_EVENT_HW_STATS_REPORT_DELTA: 5751 mlxsw_sp_nexthop_obj_hw_stats_get(router->mlxsw_sp, info); 5752 break; 5753 default: 5754 break; 5755 } 5756 5757 mutex_unlock(&router->lock); 5758 5759 out: 5760 return notifier_from_errno(err); 5761 } 5762 5763 static bool mlxsw_sp_fi_is_gateway(const struct mlxsw_sp *mlxsw_sp, 5764 struct fib_info *fi) 5765 { 5766 const struct fib_nh *nh = fib_info_nh(fi, 0); 5767 5768 return nh->fib_nh_gw_family || 5769 mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, nh, NULL); 5770 } 5771 5772 static int 5773 mlxsw_sp_nexthop4_group_info_init(struct mlxsw_sp *mlxsw_sp, 5774 struct mlxsw_sp_nexthop_group *nh_grp) 5775 { 5776 unsigned int nhs = fib_info_num_path(nh_grp->ipv4.fi); 5777 struct mlxsw_sp_nexthop_group_info *nhgi; 5778 struct mlxsw_sp_nexthop *nh; 5779 int err, i; 5780 5781 nhgi = kzalloc(struct_size(nhgi, nexthops, nhs), GFP_KERNEL); 5782 if (!nhgi) 5783 return -ENOMEM; 5784 nh_grp->nhgi = nhgi; 5785 nhgi->nh_grp = nh_grp; 5786 nhgi->gateway = mlxsw_sp_fi_is_gateway(mlxsw_sp, nh_grp->ipv4.fi); 5787 nhgi->count = nhs; 5788 for (i = 0; i < nhgi->count; i++) { 5789 struct fib_nh *fib_nh; 5790 5791 nh = &nhgi->nexthops[i]; 5792 fib_nh = fib_info_nh(nh_grp->ipv4.fi, i); 5793 err = mlxsw_sp_nexthop4_init(mlxsw_sp, nh_grp, nh, fib_nh); 5794 if (err) 5795 goto err_nexthop4_init; 5796 } 5797 err = mlxsw_sp_nexthop_group_inc(mlxsw_sp); 5798 if (err) 5799 goto err_group_inc; 5800 err = mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); 5801 if (err) 5802 goto err_group_refresh; 5803 5804 return 0; 5805 5806 err_group_refresh: 5807 mlxsw_sp_nexthop_group_dec(mlxsw_sp); 5808 err_group_inc: 5809 i = nhgi->count; 5810 err_nexthop4_init: 5811 for (i--; i >= 0; i--) { 5812 nh = &nhgi->nexthops[i]; 5813 mlxsw_sp_nexthop4_fini(mlxsw_sp, nh); 5814 } 5815 kfree(nhgi); 5816 return err; 5817 } 5818 5819 static void 5820 mlxsw_sp_nexthop4_group_info_fini(struct mlxsw_sp *mlxsw_sp, 5821 struct mlxsw_sp_nexthop_group *nh_grp) 5822 { 5823 struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi; 5824 int i; 5825 5826 mlxsw_sp_nexthop_group_dec(mlxsw_sp); 5827 for (i = nhgi->count - 1; i >= 0; i--) { 5828 struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i]; 5829 5830 mlxsw_sp_nexthop4_fini(mlxsw_sp, nh); 5831 } 5832 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); 5833 WARN_ON_ONCE(nhgi->adj_index_valid); 5834 kfree(nhgi); 5835 } 5836 5837 static struct mlxsw_sp_nexthop_group * 5838 mlxsw_sp_nexthop4_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) 5839 { 5840 struct mlxsw_sp_nexthop_group *nh_grp; 5841 int err; 5842 5843 nh_grp = kzalloc(sizeof(*nh_grp), GFP_KERNEL); 5844 if (!nh_grp) 5845 return ERR_PTR(-ENOMEM); 5846 INIT_LIST_HEAD(&nh_grp->vr_list); 5847 err = rhashtable_init(&nh_grp->vr_ht, 5848 &mlxsw_sp_nexthop_group_vr_ht_params); 5849 if (err) 5850 goto err_nexthop_group_vr_ht_init; 5851 INIT_LIST_HEAD(&nh_grp->fib_list); 5852 nh_grp->type = MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4; 5853 nh_grp->ipv4.fi = fi; 5854 fib_info_hold(fi); 5855 5856 err = mlxsw_sp_nexthop4_group_info_init(mlxsw_sp, nh_grp); 5857 if (err) 5858 goto err_nexthop_group_info_init; 5859 5860 err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); 5861 if (err) 5862 goto err_nexthop_group_insert; 5863 5864 nh_grp->can_destroy = true; 5865 5866 return nh_grp; 5867 5868 err_nexthop_group_insert: 5869 mlxsw_sp_nexthop4_group_info_fini(mlxsw_sp, nh_grp); 5870 err_nexthop_group_info_init: 5871 fib_info_put(fi); 5872 rhashtable_destroy(&nh_grp->vr_ht); 5873 err_nexthop_group_vr_ht_init: 5874 kfree(nh_grp); 5875 return ERR_PTR(err); 5876 } 5877 5878 static void 5879 mlxsw_sp_nexthop4_group_destroy(struct mlxsw_sp *mlxsw_sp, 5880 struct mlxsw_sp_nexthop_group *nh_grp) 5881 { 5882 if (!nh_grp->can_destroy) 5883 return; 5884 mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); 5885 mlxsw_sp_nexthop4_group_info_fini(mlxsw_sp, nh_grp); 5886 fib_info_put(nh_grp->ipv4.fi); 5887 WARN_ON_ONCE(!list_empty(&nh_grp->vr_list)); 5888 rhashtable_destroy(&nh_grp->vr_ht); 5889 kfree(nh_grp); 5890 } 5891 5892 static int mlxsw_sp_nexthop4_group_get(struct mlxsw_sp *mlxsw_sp, 5893 struct mlxsw_sp_fib_entry *fib_entry, 5894 struct fib_info *fi) 5895 { 5896 struct mlxsw_sp_nexthop_group *nh_grp; 5897 5898 if (fi->nh) { 5899 nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, 5900 fi->nh->id); 5901 if (WARN_ON_ONCE(!nh_grp)) 5902 return -EINVAL; 5903 goto out; 5904 } 5905 5906 nh_grp = mlxsw_sp_nexthop4_group_lookup(mlxsw_sp, fi); 5907 if (!nh_grp) { 5908 nh_grp = mlxsw_sp_nexthop4_group_create(mlxsw_sp, fi); 5909 if (IS_ERR(nh_grp)) 5910 return PTR_ERR(nh_grp); 5911 } 5912 out: 5913 list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); 5914 fib_entry->nh_group = nh_grp; 5915 return 0; 5916 } 5917 5918 static void mlxsw_sp_nexthop4_group_put(struct mlxsw_sp *mlxsw_sp, 5919 struct mlxsw_sp_fib_entry *fib_entry) 5920 { 5921 struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; 5922 5923 list_del(&fib_entry->nexthop_group_node); 5924 if (!list_empty(&nh_grp->fib_list)) 5925 return; 5926 5927 if (nh_grp->type == MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ) { 5928 mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp); 5929 return; 5930 } 5931 5932 mlxsw_sp_nexthop4_group_destroy(mlxsw_sp, nh_grp); 5933 } 5934 5935 static bool 5936 mlxsw_sp_fib4_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) 5937 { 5938 struct mlxsw_sp_fib4_entry *fib4_entry; 5939 5940 fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry, 5941 common); 5942 return !fib4_entry->dscp; 5943 } 5944 5945 static bool 5946 mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) 5947 { 5948 struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; 5949 5950 switch (fib_entry->fib_node->fib->proto) { 5951 case MLXSW_SP_L3_PROTO_IPV4: 5952 if (!mlxsw_sp_fib4_entry_should_offload(fib_entry)) 5953 return false; 5954 break; 5955 case MLXSW_SP_L3_PROTO_IPV6: 5956 break; 5957 } 5958 5959 switch (fib_entry->type) { 5960 case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: 5961 return !!nh_group->nhgi->adj_index_valid; 5962 case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: 5963 return !!mlxsw_sp_nhgi_rif(nh_group->nhgi); 5964 case MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE: 5965 case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP: 5966 case MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP: 5967 return true; 5968 default: 5969 return false; 5970 } 5971 } 5972 5973 static struct mlxsw_sp_nexthop * 5974 mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp, 5975 const struct mlxsw_sp_rt6 *mlxsw_sp_rt6) 5976 { 5977 int i; 5978 5979 for (i = 0; i < nh_grp->nhgi->count; i++) { 5980 struct mlxsw_sp_nexthop *nh = &nh_grp->nhgi->nexthops[i]; 5981 struct net_device *dev = mlxsw_sp_nexthop_dev(nh); 5982 struct fib6_info *rt = mlxsw_sp_rt6->rt; 5983 5984 if (dev && dev == rt->fib6_nh->fib_nh_dev && 5985 ipv6_addr_equal((const struct in6_addr *) &nh->gw_addr, 5986 &rt->fib6_nh->fib_nh_gw6)) 5987 return nh; 5988 } 5989 5990 return NULL; 5991 } 5992 5993 static void 5994 mlxsw_sp_fib4_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp, 5995 struct fib_entry_notifier_info *fen_info) 5996 { 5997 u32 *p_dst = (u32 *) &fen_info->dst; 5998 struct fib_rt_info fri; 5999 6000 fri.fi = fen_info->fi; 6001 fri.tb_id = fen_info->tb_id; 6002 fri.dst = cpu_to_be32(*p_dst); 6003 fri.dst_len = fen_info->dst_len; 6004 fri.dscp = fen_info->dscp; 6005 fri.type = fen_info->type; 6006 fri.offload = false; 6007 fri.trap = false; 6008 fri.offload_failed = true; 6009 fib_alias_hw_flags_set(mlxsw_sp_net(mlxsw_sp), &fri); 6010 } 6011 6012 static void 6013 mlxsw_sp_fib4_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp, 6014 struct mlxsw_sp_fib_entry *fib_entry) 6015 { 6016 u32 *p_dst = (u32 *) fib_entry->fib_node->key.addr; 6017 int dst_len = fib_entry->fib_node->key.prefix_len; 6018 struct mlxsw_sp_fib4_entry *fib4_entry; 6019 struct fib_rt_info fri; 6020 bool should_offload; 6021 6022 should_offload = mlxsw_sp_fib_entry_should_offload(fib_entry); 6023 fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry, 6024 common); 6025 fri.fi = fib4_entry->fi; 6026 fri.tb_id = fib4_entry->tb_id; 6027 fri.dst = cpu_to_be32(*p_dst); 6028 fri.dst_len = dst_len; 6029 fri.dscp = fib4_entry->dscp; 6030 fri.type = fib4_entry->type; 6031 fri.offload = should_offload; 6032 fri.trap = !should_offload; 6033 fri.offload_failed = false; 6034 fib_alias_hw_flags_set(mlxsw_sp_net(mlxsw_sp), &fri); 6035 } 6036 6037 static void 6038 mlxsw_sp_fib4_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp, 6039 struct mlxsw_sp_fib_entry *fib_entry) 6040 { 6041 u32 *p_dst = (u32 *) fib_entry->fib_node->key.addr; 6042 int dst_len = fib_entry->fib_node->key.prefix_len; 6043 struct mlxsw_sp_fib4_entry *fib4_entry; 6044 struct fib_rt_info fri; 6045 6046 fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry, 6047 common); 6048 fri.fi = fib4_entry->fi; 6049 fri.tb_id = fib4_entry->tb_id; 6050 fri.dst = cpu_to_be32(*p_dst); 6051 fri.dst_len = dst_len; 6052 fri.dscp = fib4_entry->dscp; 6053 fri.type = fib4_entry->type; 6054 fri.offload = false; 6055 fri.trap = false; 6056 fri.offload_failed = false; 6057 fib_alias_hw_flags_set(mlxsw_sp_net(mlxsw_sp), &fri); 6058 } 6059 6060 #if IS_ENABLED(CONFIG_IPV6) 6061 static void 6062 mlxsw_sp_fib6_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp, 6063 struct fib6_info **rt_arr, 6064 unsigned int nrt6) 6065 { 6066 int i; 6067 6068 /* In IPv6 a multipath route is represented using multiple routes, so 6069 * we need to set the flags on all of them. 6070 */ 6071 for (i = 0; i < nrt6; i++) 6072 fib6_info_hw_flags_set(mlxsw_sp_net(mlxsw_sp), rt_arr[i], 6073 false, false, true); 6074 } 6075 #else 6076 static void 6077 mlxsw_sp_fib6_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp, 6078 struct fib6_info **rt_arr, 6079 unsigned int nrt6) 6080 { 6081 } 6082 #endif 6083 6084 #if IS_ENABLED(CONFIG_IPV6) 6085 static void 6086 mlxsw_sp_fib6_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp, 6087 struct mlxsw_sp_fib_entry *fib_entry) 6088 { 6089 struct mlxsw_sp_fib6_entry *fib6_entry; 6090 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 6091 bool should_offload; 6092 6093 should_offload = mlxsw_sp_fib_entry_should_offload(fib_entry); 6094 6095 /* In IPv6 a multipath route is represented using multiple routes, so 6096 * we need to set the flags on all of them. 6097 */ 6098 fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry, 6099 common); 6100 list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) 6101 fib6_info_hw_flags_set(mlxsw_sp_net(mlxsw_sp), mlxsw_sp_rt6->rt, 6102 should_offload, !should_offload, false); 6103 } 6104 #else 6105 static void 6106 mlxsw_sp_fib6_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp, 6107 struct mlxsw_sp_fib_entry *fib_entry) 6108 { 6109 } 6110 #endif 6111 6112 #if IS_ENABLED(CONFIG_IPV6) 6113 static void 6114 mlxsw_sp_fib6_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp, 6115 struct mlxsw_sp_fib_entry *fib_entry) 6116 { 6117 struct mlxsw_sp_fib6_entry *fib6_entry; 6118 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 6119 6120 fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry, 6121 common); 6122 list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) 6123 fib6_info_hw_flags_set(mlxsw_sp_net(mlxsw_sp), mlxsw_sp_rt6->rt, 6124 false, false, false); 6125 } 6126 #else 6127 static void 6128 mlxsw_sp_fib6_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp, 6129 struct mlxsw_sp_fib_entry *fib_entry) 6130 { 6131 } 6132 #endif 6133 6134 static void 6135 mlxsw_sp_fib_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp, 6136 struct mlxsw_sp_fib_entry *fib_entry) 6137 { 6138 switch (fib_entry->fib_node->fib->proto) { 6139 case MLXSW_SP_L3_PROTO_IPV4: 6140 mlxsw_sp_fib4_entry_hw_flags_set(mlxsw_sp, fib_entry); 6141 break; 6142 case MLXSW_SP_L3_PROTO_IPV6: 6143 mlxsw_sp_fib6_entry_hw_flags_set(mlxsw_sp, fib_entry); 6144 break; 6145 } 6146 } 6147 6148 static void 6149 mlxsw_sp_fib_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp, 6150 struct mlxsw_sp_fib_entry *fib_entry) 6151 { 6152 switch (fib_entry->fib_node->fib->proto) { 6153 case MLXSW_SP_L3_PROTO_IPV4: 6154 mlxsw_sp_fib4_entry_hw_flags_clear(mlxsw_sp, fib_entry); 6155 break; 6156 case MLXSW_SP_L3_PROTO_IPV6: 6157 mlxsw_sp_fib6_entry_hw_flags_clear(mlxsw_sp, fib_entry); 6158 break; 6159 } 6160 } 6161 6162 static void 6163 mlxsw_sp_fib_entry_hw_flags_refresh(struct mlxsw_sp *mlxsw_sp, 6164 struct mlxsw_sp_fib_entry *fib_entry, 6165 enum mlxsw_reg_ralue_op op) 6166 { 6167 switch (op) { 6168 case MLXSW_REG_RALUE_OP_WRITE_WRITE: 6169 mlxsw_sp_fib_entry_hw_flags_set(mlxsw_sp, fib_entry); 6170 break; 6171 case MLXSW_REG_RALUE_OP_WRITE_DELETE: 6172 mlxsw_sp_fib_entry_hw_flags_clear(mlxsw_sp, fib_entry); 6173 break; 6174 default: 6175 break; 6176 } 6177 } 6178 6179 static void 6180 mlxsw_sp_fib_entry_ralue_pack(char *ralue_pl, 6181 const struct mlxsw_sp_fib_entry *fib_entry, 6182 enum mlxsw_reg_ralue_op op) 6183 { 6184 struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; 6185 enum mlxsw_reg_ralxx_protocol proto; 6186 u32 *p_dip; 6187 6188 proto = (enum mlxsw_reg_ralxx_protocol) fib->proto; 6189 6190 switch (fib->proto) { 6191 case MLXSW_SP_L3_PROTO_IPV4: 6192 p_dip = (u32 *) fib_entry->fib_node->key.addr; 6193 mlxsw_reg_ralue_pack4(ralue_pl, proto, op, fib->vr->id, 6194 fib_entry->fib_node->key.prefix_len, 6195 *p_dip); 6196 break; 6197 case MLXSW_SP_L3_PROTO_IPV6: 6198 mlxsw_reg_ralue_pack6(ralue_pl, proto, op, fib->vr->id, 6199 fib_entry->fib_node->key.prefix_len, 6200 fib_entry->fib_node->key.addr); 6201 break; 6202 } 6203 } 6204 6205 static int mlxsw_sp_fib_entry_op_remote(struct mlxsw_sp *mlxsw_sp, 6206 struct mlxsw_sp_fib_entry *fib_entry, 6207 enum mlxsw_reg_ralue_op op) 6208 { 6209 struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; 6210 struct mlxsw_sp_nexthop_group_info *nhgi = nh_group->nhgi; 6211 char ralue_pl[MLXSW_REG_RALUE_LEN]; 6212 enum mlxsw_reg_ralue_trap_action trap_action; 6213 u16 trap_id = 0; 6214 u32 adjacency_index = 0; 6215 u16 ecmp_size = 0; 6216 6217 /* In case the nexthop group adjacency index is valid, use it 6218 * with provided ECMP size. Otherwise, setup trap and pass 6219 * traffic to kernel. 6220 */ 6221 if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { 6222 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; 6223 adjacency_index = nhgi->adj_index; 6224 ecmp_size = nhgi->ecmp_size; 6225 } else if (!nhgi->adj_index_valid && nhgi->count && 6226 mlxsw_sp_nhgi_rif(nhgi)) { 6227 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; 6228 adjacency_index = mlxsw_sp->router->adj_trap_index; 6229 ecmp_size = 1; 6230 } else { 6231 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; 6232 trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; 6233 } 6234 6235 mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); 6236 mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, 6237 adjacency_index, ecmp_size); 6238 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); 6239 } 6240 6241 static int mlxsw_sp_fib_entry_op_local(struct mlxsw_sp *mlxsw_sp, 6242 struct mlxsw_sp_fib_entry *fib_entry, 6243 enum mlxsw_reg_ralue_op op) 6244 { 6245 struct mlxsw_sp_rif *rif = mlxsw_sp_nhgi_rif(fib_entry->nh_group->nhgi); 6246 enum mlxsw_reg_ralue_trap_action trap_action; 6247 char ralue_pl[MLXSW_REG_RALUE_LEN]; 6248 u16 trap_id = 0; 6249 u16 rif_index = 0; 6250 6251 if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { 6252 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; 6253 rif_index = rif->rif_index; 6254 } else { 6255 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; 6256 trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; 6257 } 6258 6259 mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); 6260 mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, 6261 rif_index); 6262 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); 6263 } 6264 6265 static int mlxsw_sp_fib_entry_op_trap(struct mlxsw_sp *mlxsw_sp, 6266 struct mlxsw_sp_fib_entry *fib_entry, 6267 enum mlxsw_reg_ralue_op op) 6268 { 6269 char ralue_pl[MLXSW_REG_RALUE_LEN]; 6270 6271 mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); 6272 mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); 6273 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); 6274 } 6275 6276 static int mlxsw_sp_fib_entry_op_blackhole(struct mlxsw_sp *mlxsw_sp, 6277 struct mlxsw_sp_fib_entry *fib_entry, 6278 enum mlxsw_reg_ralue_op op) 6279 { 6280 enum mlxsw_reg_ralue_trap_action trap_action; 6281 char ralue_pl[MLXSW_REG_RALUE_LEN]; 6282 6283 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_DISCARD_ERROR; 6284 mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); 6285 mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, 0, 0); 6286 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); 6287 } 6288 6289 static int 6290 mlxsw_sp_fib_entry_op_unreachable(struct mlxsw_sp *mlxsw_sp, 6291 struct mlxsw_sp_fib_entry *fib_entry, 6292 enum mlxsw_reg_ralue_op op) 6293 { 6294 enum mlxsw_reg_ralue_trap_action trap_action; 6295 char ralue_pl[MLXSW_REG_RALUE_LEN]; 6296 u16 trap_id; 6297 6298 trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; 6299 trap_id = MLXSW_TRAP_ID_RTR_INGRESS1; 6300 6301 mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); 6302 mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, 0); 6303 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); 6304 } 6305 6306 static int 6307 mlxsw_sp_fib_entry_op_ipip_decap(struct mlxsw_sp *mlxsw_sp, 6308 struct mlxsw_sp_fib_entry *fib_entry, 6309 enum mlxsw_reg_ralue_op op) 6310 { 6311 struct mlxsw_sp_ipip_entry *ipip_entry = fib_entry->decap.ipip_entry; 6312 const struct mlxsw_sp_ipip_ops *ipip_ops; 6313 char ralue_pl[MLXSW_REG_RALUE_LEN]; 6314 int err; 6315 6316 if (WARN_ON(!ipip_entry)) 6317 return -EINVAL; 6318 6319 ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]; 6320 err = ipip_ops->decap_config(mlxsw_sp, ipip_entry, 6321 fib_entry->decap.tunnel_index); 6322 if (err) 6323 return err; 6324 6325 mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); 6326 mlxsw_reg_ralue_act_ip2me_tun_pack(ralue_pl, 6327 fib_entry->decap.tunnel_index); 6328 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); 6329 } 6330 6331 static int mlxsw_sp_fib_entry_op_nve_decap(struct mlxsw_sp *mlxsw_sp, 6332 struct mlxsw_sp_fib_entry *fib_entry, 6333 enum mlxsw_reg_ralue_op op) 6334 { 6335 char ralue_pl[MLXSW_REG_RALUE_LEN]; 6336 6337 mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op); 6338 mlxsw_reg_ralue_act_ip2me_tun_pack(ralue_pl, 6339 fib_entry->decap.tunnel_index); 6340 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); 6341 } 6342 6343 static int __mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, 6344 struct mlxsw_sp_fib_entry *fib_entry, 6345 enum mlxsw_reg_ralue_op op) 6346 { 6347 switch (fib_entry->type) { 6348 case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: 6349 return mlxsw_sp_fib_entry_op_remote(mlxsw_sp, fib_entry, op); 6350 case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: 6351 return mlxsw_sp_fib_entry_op_local(mlxsw_sp, fib_entry, op); 6352 case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: 6353 return mlxsw_sp_fib_entry_op_trap(mlxsw_sp, fib_entry, op); 6354 case MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE: 6355 return mlxsw_sp_fib_entry_op_blackhole(mlxsw_sp, fib_entry, op); 6356 case MLXSW_SP_FIB_ENTRY_TYPE_UNREACHABLE: 6357 return mlxsw_sp_fib_entry_op_unreachable(mlxsw_sp, fib_entry, 6358 op); 6359 case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP: 6360 return mlxsw_sp_fib_entry_op_ipip_decap(mlxsw_sp, 6361 fib_entry, op); 6362 case MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP: 6363 return mlxsw_sp_fib_entry_op_nve_decap(mlxsw_sp, fib_entry, op); 6364 } 6365 return -EINVAL; 6366 } 6367 6368 static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, 6369 struct mlxsw_sp_fib_entry *fib_entry, 6370 enum mlxsw_reg_ralue_op op) 6371 { 6372 int err = __mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, op); 6373 6374 if (err) 6375 return err; 6376 6377 mlxsw_sp_fib_entry_hw_flags_refresh(mlxsw_sp, fib_entry, op); 6378 6379 return err; 6380 } 6381 6382 static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, 6383 struct mlxsw_sp_fib_entry *fib_entry) 6384 { 6385 return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, 6386 MLXSW_REG_RALUE_OP_WRITE_WRITE); 6387 } 6388 6389 static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, 6390 struct mlxsw_sp_fib_entry *fib_entry) 6391 { 6392 return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, 6393 MLXSW_REG_RALUE_OP_WRITE_DELETE); 6394 } 6395 6396 static int 6397 mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, 6398 const struct fib_entry_notifier_info *fen_info, 6399 struct mlxsw_sp_fib_entry *fib_entry) 6400 { 6401 struct mlxsw_sp_nexthop_group_info *nhgi = fib_entry->nh_group->nhgi; 6402 union mlxsw_sp_l3addr dip = { .addr4 = htonl(fen_info->dst) }; 6403 struct mlxsw_sp_router *router = mlxsw_sp->router; 6404 u32 tb_id = mlxsw_sp_fix_tb_id(fen_info->tb_id); 6405 int ifindex = nhgi->nexthops[0].ifindex; 6406 struct mlxsw_sp_ipip_entry *ipip_entry; 6407 6408 switch (fen_info->type) { 6409 case RTN_LOCAL: 6410 ipip_entry = mlxsw_sp_ipip_entry_find_by_decap(mlxsw_sp, ifindex, 6411 MLXSW_SP_L3_PROTO_IPV4, dip); 6412 if (ipip_entry && ipip_entry->ol_dev->flags & IFF_UP) { 6413 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP; 6414 return mlxsw_sp_fib_entry_decap_init(mlxsw_sp, 6415 fib_entry, 6416 ipip_entry); 6417 } 6418 if (mlxsw_sp_router_nve_is_decap(mlxsw_sp, tb_id, 6419 MLXSW_SP_L3_PROTO_IPV4, 6420 &dip)) { 6421 u32 tunnel_index; 6422 6423 tunnel_index = router->nve_decap_config.tunnel_index; 6424 fib_entry->decap.tunnel_index = tunnel_index; 6425 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP; 6426 return 0; 6427 } 6428 fallthrough; 6429 case RTN_BROADCAST: 6430 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; 6431 return 0; 6432 case RTN_BLACKHOLE: 6433 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE; 6434 return 0; 6435 case RTN_UNREACHABLE: 6436 case RTN_PROHIBIT: 6437 /* Packets hitting these routes need to be trapped, but 6438 * can do so with a lower priority than packets directed 6439 * at the host, so use action type local instead of trap. 6440 */ 6441 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_UNREACHABLE; 6442 return 0; 6443 case RTN_UNICAST: 6444 if (nhgi->gateway) 6445 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; 6446 else 6447 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; 6448 return 0; 6449 default: 6450 return -EINVAL; 6451 } 6452 } 6453 6454 static void 6455 mlxsw_sp_fib_entry_type_unset(struct mlxsw_sp *mlxsw_sp, 6456 struct mlxsw_sp_fib_entry *fib_entry) 6457 { 6458 switch (fib_entry->type) { 6459 case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP: 6460 mlxsw_sp_fib_entry_decap_fini(mlxsw_sp, fib_entry); 6461 break; 6462 default: 6463 break; 6464 } 6465 } 6466 6467 static void 6468 mlxsw_sp_fib4_entry_type_unset(struct mlxsw_sp *mlxsw_sp, 6469 struct mlxsw_sp_fib4_entry *fib4_entry) 6470 { 6471 mlxsw_sp_fib_entry_type_unset(mlxsw_sp, &fib4_entry->common); 6472 } 6473 6474 static struct mlxsw_sp_fib4_entry * 6475 mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, 6476 struct mlxsw_sp_fib_node *fib_node, 6477 const struct fib_entry_notifier_info *fen_info) 6478 { 6479 struct mlxsw_sp_fib4_entry *fib4_entry; 6480 struct mlxsw_sp_fib_entry *fib_entry; 6481 int err; 6482 6483 fib4_entry = kzalloc(sizeof(*fib4_entry), GFP_KERNEL); 6484 if (!fib4_entry) 6485 return ERR_PTR(-ENOMEM); 6486 fib_entry = &fib4_entry->common; 6487 6488 err = mlxsw_sp_nexthop4_group_get(mlxsw_sp, fib_entry, fen_info->fi); 6489 if (err) 6490 goto err_nexthop4_group_get; 6491 6492 err = mlxsw_sp_nexthop_group_vr_link(fib_entry->nh_group, 6493 fib_node->fib); 6494 if (err) 6495 goto err_nexthop_group_vr_link; 6496 6497 err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); 6498 if (err) 6499 goto err_fib4_entry_type_set; 6500 6501 fib4_entry->fi = fen_info->fi; 6502 fib_info_hold(fib4_entry->fi); 6503 fib4_entry->tb_id = fen_info->tb_id; 6504 fib4_entry->type = fen_info->type; 6505 fib4_entry->dscp = fen_info->dscp; 6506 6507 fib_entry->fib_node = fib_node; 6508 6509 return fib4_entry; 6510 6511 err_fib4_entry_type_set: 6512 mlxsw_sp_nexthop_group_vr_unlink(fib_entry->nh_group, fib_node->fib); 6513 err_nexthop_group_vr_link: 6514 mlxsw_sp_nexthop4_group_put(mlxsw_sp, &fib4_entry->common); 6515 err_nexthop4_group_get: 6516 kfree(fib4_entry); 6517 return ERR_PTR(err); 6518 } 6519 6520 static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, 6521 struct mlxsw_sp_fib4_entry *fib4_entry) 6522 { 6523 struct mlxsw_sp_fib_node *fib_node = fib4_entry->common.fib_node; 6524 6525 fib_info_put(fib4_entry->fi); 6526 mlxsw_sp_fib4_entry_type_unset(mlxsw_sp, fib4_entry); 6527 mlxsw_sp_nexthop_group_vr_unlink(fib4_entry->common.nh_group, 6528 fib_node->fib); 6529 mlxsw_sp_nexthop4_group_put(mlxsw_sp, &fib4_entry->common); 6530 kfree(fib4_entry); 6531 } 6532 6533 static struct mlxsw_sp_fib4_entry * 6534 mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, 6535 const struct fib_entry_notifier_info *fen_info) 6536 { 6537 struct mlxsw_sp_fib4_entry *fib4_entry; 6538 struct mlxsw_sp_fib_node *fib_node; 6539 struct mlxsw_sp_fib *fib; 6540 struct mlxsw_sp_vr *vr; 6541 6542 vr = mlxsw_sp_vr_find(mlxsw_sp, fen_info->tb_id); 6543 if (!vr) 6544 return NULL; 6545 fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); 6546 6547 fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, 6548 sizeof(fen_info->dst), 6549 fen_info->dst_len); 6550 if (!fib_node) 6551 return NULL; 6552 6553 fib4_entry = container_of(fib_node->fib_entry, 6554 struct mlxsw_sp_fib4_entry, common); 6555 if (fib4_entry->tb_id == fen_info->tb_id && 6556 fib4_entry->dscp == fen_info->dscp && 6557 fib4_entry->type == fen_info->type && 6558 fib4_entry->fi == fen_info->fi) 6559 return fib4_entry; 6560 6561 return NULL; 6562 } 6563 6564 static const struct rhashtable_params mlxsw_sp_fib_ht_params = { 6565 .key_offset = offsetof(struct mlxsw_sp_fib_node, key), 6566 .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), 6567 .key_len = sizeof(struct mlxsw_sp_fib_key), 6568 .automatic_shrinking = true, 6569 }; 6570 6571 static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, 6572 struct mlxsw_sp_fib_node *fib_node) 6573 { 6574 return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, 6575 mlxsw_sp_fib_ht_params); 6576 } 6577 6578 static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, 6579 struct mlxsw_sp_fib_node *fib_node) 6580 { 6581 rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, 6582 mlxsw_sp_fib_ht_params); 6583 } 6584 6585 static struct mlxsw_sp_fib_node * 6586 mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, 6587 size_t addr_len, unsigned char prefix_len) 6588 { 6589 struct mlxsw_sp_fib_key key; 6590 6591 memset(&key, 0, sizeof(key)); 6592 memcpy(key.addr, addr, addr_len); 6593 key.prefix_len = prefix_len; 6594 return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); 6595 } 6596 6597 static struct mlxsw_sp_fib_node * 6598 mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, 6599 size_t addr_len, unsigned char prefix_len) 6600 { 6601 struct mlxsw_sp_fib_node *fib_node; 6602 6603 fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); 6604 if (!fib_node) 6605 return NULL; 6606 6607 list_add(&fib_node->list, &fib->node_list); 6608 memcpy(fib_node->key.addr, addr, addr_len); 6609 fib_node->key.prefix_len = prefix_len; 6610 6611 return fib_node; 6612 } 6613 6614 static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) 6615 { 6616 list_del(&fib_node->list); 6617 kfree(fib_node); 6618 } 6619 6620 static int mlxsw_sp_fib_lpm_tree_link(struct mlxsw_sp *mlxsw_sp, 6621 struct mlxsw_sp_fib_node *fib_node) 6622 { 6623 struct mlxsw_sp_prefix_usage req_prefix_usage; 6624 struct mlxsw_sp_fib *fib = fib_node->fib; 6625 struct mlxsw_sp_lpm_tree *lpm_tree; 6626 int err; 6627 6628 lpm_tree = mlxsw_sp->router->lpm.proto_trees[fib->proto]; 6629 if (lpm_tree->prefix_ref_count[fib_node->key.prefix_len] != 0) 6630 goto out; 6631 6632 mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &lpm_tree->prefix_usage); 6633 mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); 6634 lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, 6635 fib->proto); 6636 if (IS_ERR(lpm_tree)) 6637 return PTR_ERR(lpm_tree); 6638 6639 err = mlxsw_sp_vrs_lpm_tree_replace(mlxsw_sp, fib, lpm_tree); 6640 if (err) 6641 goto err_lpm_tree_replace; 6642 6643 out: 6644 lpm_tree->prefix_ref_count[fib_node->key.prefix_len]++; 6645 return 0; 6646 6647 err_lpm_tree_replace: 6648 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); 6649 return err; 6650 } 6651 6652 static void mlxsw_sp_fib_lpm_tree_unlink(struct mlxsw_sp *mlxsw_sp, 6653 struct mlxsw_sp_fib_node *fib_node) 6654 { 6655 struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree; 6656 struct mlxsw_sp_prefix_usage req_prefix_usage; 6657 struct mlxsw_sp_fib *fib = fib_node->fib; 6658 int err; 6659 6660 if (--lpm_tree->prefix_ref_count[fib_node->key.prefix_len] != 0) 6661 return; 6662 /* Try to construct a new LPM tree from the current prefix usage 6663 * minus the unused one. If we fail, continue using the old one. 6664 */ 6665 mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &lpm_tree->prefix_usage); 6666 mlxsw_sp_prefix_usage_clear(&req_prefix_usage, 6667 fib_node->key.prefix_len); 6668 lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, 6669 fib->proto); 6670 if (IS_ERR(lpm_tree)) 6671 return; 6672 6673 err = mlxsw_sp_vrs_lpm_tree_replace(mlxsw_sp, fib, lpm_tree); 6674 if (err) 6675 goto err_lpm_tree_replace; 6676 6677 return; 6678 6679 err_lpm_tree_replace: 6680 mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); 6681 } 6682 6683 static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, 6684 struct mlxsw_sp_fib_node *fib_node, 6685 struct mlxsw_sp_fib *fib) 6686 { 6687 int err; 6688 6689 err = mlxsw_sp_fib_node_insert(fib, fib_node); 6690 if (err) 6691 return err; 6692 fib_node->fib = fib; 6693 6694 err = mlxsw_sp_fib_lpm_tree_link(mlxsw_sp, fib_node); 6695 if (err) 6696 goto err_fib_lpm_tree_link; 6697 6698 return 0; 6699 6700 err_fib_lpm_tree_link: 6701 fib_node->fib = NULL; 6702 mlxsw_sp_fib_node_remove(fib, fib_node); 6703 return err; 6704 } 6705 6706 static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, 6707 struct mlxsw_sp_fib_node *fib_node) 6708 { 6709 struct mlxsw_sp_fib *fib = fib_node->fib; 6710 6711 mlxsw_sp_fib_lpm_tree_unlink(mlxsw_sp, fib_node); 6712 fib_node->fib = NULL; 6713 mlxsw_sp_fib_node_remove(fib, fib_node); 6714 } 6715 6716 static struct mlxsw_sp_fib_node * 6717 mlxsw_sp_fib_node_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id, const void *addr, 6718 size_t addr_len, unsigned char prefix_len, 6719 enum mlxsw_sp_l3proto proto) 6720 { 6721 struct mlxsw_sp_fib_node *fib_node; 6722 struct mlxsw_sp_fib *fib; 6723 struct mlxsw_sp_vr *vr; 6724 int err; 6725 6726 vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id, NULL); 6727 if (IS_ERR(vr)) 6728 return ERR_CAST(vr); 6729 fib = mlxsw_sp_vr_fib(vr, proto); 6730 6731 fib_node = mlxsw_sp_fib_node_lookup(fib, addr, addr_len, prefix_len); 6732 if (fib_node) 6733 return fib_node; 6734 6735 fib_node = mlxsw_sp_fib_node_create(fib, addr, addr_len, prefix_len); 6736 if (!fib_node) { 6737 err = -ENOMEM; 6738 goto err_fib_node_create; 6739 } 6740 6741 err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); 6742 if (err) 6743 goto err_fib_node_init; 6744 6745 return fib_node; 6746 6747 err_fib_node_init: 6748 mlxsw_sp_fib_node_destroy(fib_node); 6749 err_fib_node_create: 6750 mlxsw_sp_vr_put(mlxsw_sp, vr); 6751 return ERR_PTR(err); 6752 } 6753 6754 static void mlxsw_sp_fib_node_put(struct mlxsw_sp *mlxsw_sp, 6755 struct mlxsw_sp_fib_node *fib_node) 6756 { 6757 struct mlxsw_sp_vr *vr = fib_node->fib->vr; 6758 6759 if (fib_node->fib_entry) 6760 return; 6761 mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); 6762 mlxsw_sp_fib_node_destroy(fib_node); 6763 mlxsw_sp_vr_put(mlxsw_sp, vr); 6764 } 6765 6766 static int mlxsw_sp_fib_node_entry_link(struct mlxsw_sp *mlxsw_sp, 6767 struct mlxsw_sp_fib_entry *fib_entry) 6768 { 6769 struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; 6770 int err; 6771 6772 fib_node->fib_entry = fib_entry; 6773 6774 err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); 6775 if (err) 6776 goto err_fib_entry_update; 6777 6778 return 0; 6779 6780 err_fib_entry_update: 6781 fib_node->fib_entry = NULL; 6782 return err; 6783 } 6784 6785 static void 6786 mlxsw_sp_fib_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, 6787 struct mlxsw_sp_fib_entry *fib_entry) 6788 { 6789 struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; 6790 6791 mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); 6792 fib_node->fib_entry = NULL; 6793 } 6794 6795 static bool mlxsw_sp_fib4_allow_replace(struct mlxsw_sp_fib4_entry *fib4_entry) 6796 { 6797 struct mlxsw_sp_fib_node *fib_node = fib4_entry->common.fib_node; 6798 struct mlxsw_sp_fib4_entry *fib4_replaced; 6799 6800 if (!fib_node->fib_entry) 6801 return true; 6802 6803 fib4_replaced = container_of(fib_node->fib_entry, 6804 struct mlxsw_sp_fib4_entry, common); 6805 if (fib4_entry->tb_id == RT_TABLE_MAIN && 6806 fib4_replaced->tb_id == RT_TABLE_LOCAL) 6807 return false; 6808 6809 return true; 6810 } 6811 6812 static int 6813 mlxsw_sp_router_fib4_replace(struct mlxsw_sp *mlxsw_sp, 6814 const struct fib_entry_notifier_info *fen_info) 6815 { 6816 struct mlxsw_sp_fib4_entry *fib4_entry, *fib4_replaced; 6817 struct mlxsw_sp_fib_entry *replaced; 6818 struct mlxsw_sp_fib_node *fib_node; 6819 int err; 6820 6821 if (fen_info->fi->nh && 6822 !mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, fen_info->fi->nh->id)) 6823 return 0; 6824 6825 fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, fen_info->tb_id, 6826 &fen_info->dst, sizeof(fen_info->dst), 6827 fen_info->dst_len, 6828 MLXSW_SP_L3_PROTO_IPV4); 6829 if (IS_ERR(fib_node)) { 6830 dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); 6831 return PTR_ERR(fib_node); 6832 } 6833 6834 fib4_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); 6835 if (IS_ERR(fib4_entry)) { 6836 dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); 6837 err = PTR_ERR(fib4_entry); 6838 goto err_fib4_entry_create; 6839 } 6840 6841 if (!mlxsw_sp_fib4_allow_replace(fib4_entry)) { 6842 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); 6843 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 6844 return 0; 6845 } 6846 6847 replaced = fib_node->fib_entry; 6848 err = mlxsw_sp_fib_node_entry_link(mlxsw_sp, &fib4_entry->common); 6849 if (err) { 6850 dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); 6851 goto err_fib_node_entry_link; 6852 } 6853 6854 /* Nothing to replace */ 6855 if (!replaced) 6856 return 0; 6857 6858 mlxsw_sp_fib_entry_hw_flags_clear(mlxsw_sp, replaced); 6859 fib4_replaced = container_of(replaced, struct mlxsw_sp_fib4_entry, 6860 common); 6861 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_replaced); 6862 6863 return 0; 6864 6865 err_fib_node_entry_link: 6866 fib_node->fib_entry = replaced; 6867 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); 6868 err_fib4_entry_create: 6869 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 6870 return err; 6871 } 6872 6873 static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, 6874 struct fib_entry_notifier_info *fen_info) 6875 { 6876 struct mlxsw_sp_fib4_entry *fib4_entry; 6877 struct mlxsw_sp_fib_node *fib_node; 6878 6879 fib4_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); 6880 if (!fib4_entry) 6881 return; 6882 fib_node = fib4_entry->common.fib_node; 6883 6884 mlxsw_sp_fib_node_entry_unlink(mlxsw_sp, &fib4_entry->common); 6885 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); 6886 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 6887 } 6888 6889 static bool mlxsw_sp_fib6_rt_should_ignore(const struct fib6_info *rt) 6890 { 6891 /* Multicast routes aren't supported, so ignore them. Neighbour 6892 * Discovery packets are specifically trapped. 6893 */ 6894 if (ipv6_addr_type(&rt->fib6_dst.addr) & IPV6_ADDR_MULTICAST) 6895 return true; 6896 6897 /* Cloned routes are irrelevant in the forwarding path. */ 6898 if (rt->fib6_flags & RTF_CACHE) 6899 return true; 6900 6901 return false; 6902 } 6903 6904 static struct mlxsw_sp_rt6 *mlxsw_sp_rt6_create(struct fib6_info *rt) 6905 { 6906 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 6907 6908 mlxsw_sp_rt6 = kzalloc(sizeof(*mlxsw_sp_rt6), GFP_KERNEL); 6909 if (!mlxsw_sp_rt6) 6910 return ERR_PTR(-ENOMEM); 6911 6912 /* In case of route replace, replaced route is deleted with 6913 * no notification. Take reference to prevent accessing freed 6914 * memory. 6915 */ 6916 mlxsw_sp_rt6->rt = rt; 6917 fib6_info_hold(rt); 6918 6919 return mlxsw_sp_rt6; 6920 } 6921 6922 #if IS_ENABLED(CONFIG_IPV6) 6923 static void mlxsw_sp_rt6_release(struct fib6_info *rt) 6924 { 6925 fib6_info_release(rt); 6926 } 6927 #else 6928 static void mlxsw_sp_rt6_release(struct fib6_info *rt) 6929 { 6930 } 6931 #endif 6932 6933 static void mlxsw_sp_rt6_destroy(struct mlxsw_sp_rt6 *mlxsw_sp_rt6) 6934 { 6935 struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh; 6936 6937 if (!mlxsw_sp_rt6->rt->nh) 6938 fib6_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD; 6939 mlxsw_sp_rt6_release(mlxsw_sp_rt6->rt); 6940 kfree(mlxsw_sp_rt6); 6941 } 6942 6943 static struct fib6_info * 6944 mlxsw_sp_fib6_entry_rt(const struct mlxsw_sp_fib6_entry *fib6_entry) 6945 { 6946 return list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6, 6947 list)->rt; 6948 } 6949 6950 static struct mlxsw_sp_rt6 * 6951 mlxsw_sp_fib6_entry_rt_find(const struct mlxsw_sp_fib6_entry *fib6_entry, 6952 const struct fib6_info *rt) 6953 { 6954 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 6955 6956 list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) { 6957 if (mlxsw_sp_rt6->rt == rt) 6958 return mlxsw_sp_rt6; 6959 } 6960 6961 return NULL; 6962 } 6963 6964 static bool mlxsw_sp_nexthop6_ipip_type(const struct mlxsw_sp *mlxsw_sp, 6965 const struct fib6_info *rt, 6966 enum mlxsw_sp_ipip_type *ret) 6967 { 6968 return rt->fib6_nh->fib_nh_dev && 6969 mlxsw_sp_netdev_ipip_type(mlxsw_sp, rt->fib6_nh->fib_nh_dev, ret); 6970 } 6971 6972 static int mlxsw_sp_nexthop6_init(struct mlxsw_sp *mlxsw_sp, 6973 struct mlxsw_sp_nexthop_group *nh_grp, 6974 struct mlxsw_sp_nexthop *nh, 6975 const struct fib6_info *rt) 6976 { 6977 struct net_device *dev = rt->fib6_nh->fib_nh_dev; 6978 int err; 6979 6980 nh->nhgi = nh_grp->nhgi; 6981 nh->nh_weight = rt->fib6_nh->fib_nh_weight; 6982 memcpy(&nh->gw_addr, &rt->fib6_nh->fib_nh_gw6, sizeof(nh->gw_addr)); 6983 #if IS_ENABLED(CONFIG_IPV6) 6984 nh->neigh_tbl = &nd_tbl; 6985 #endif 6986 6987 err = mlxsw_sp_nexthop_counter_enable(mlxsw_sp, nh); 6988 if (err) 6989 return err; 6990 6991 list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list); 6992 6993 if (!dev) 6994 return 0; 6995 nh->ifindex = dev->ifindex; 6996 6997 err = mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, dev); 6998 if (err) 6999 goto err_nexthop_type_init; 7000 7001 return 0; 7002 7003 err_nexthop_type_init: 7004 list_del(&nh->router_list_node); 7005 mlxsw_sp_nexthop_counter_disable(mlxsw_sp, nh); 7006 return err; 7007 } 7008 7009 static void mlxsw_sp_nexthop6_fini(struct mlxsw_sp *mlxsw_sp, 7010 struct mlxsw_sp_nexthop *nh) 7011 { 7012 mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh); 7013 list_del(&nh->router_list_node); 7014 mlxsw_sp_nexthop_counter_disable(mlxsw_sp, nh); 7015 } 7016 7017 static bool mlxsw_sp_rt6_is_gateway(const struct mlxsw_sp *mlxsw_sp, 7018 const struct fib6_info *rt) 7019 { 7020 return rt->fib6_nh->fib_nh_gw_family || 7021 mlxsw_sp_nexthop6_ipip_type(mlxsw_sp, rt, NULL); 7022 } 7023 7024 static int 7025 mlxsw_sp_nexthop6_group_info_init(struct mlxsw_sp *mlxsw_sp, 7026 struct mlxsw_sp_nexthop_group *nh_grp, 7027 struct mlxsw_sp_fib6_entry *fib6_entry) 7028 { 7029 struct mlxsw_sp_nexthop_group_info *nhgi; 7030 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 7031 struct mlxsw_sp_nexthop *nh; 7032 int err, i; 7033 7034 nhgi = kzalloc(struct_size(nhgi, nexthops, fib6_entry->nrt6), 7035 GFP_KERNEL); 7036 if (!nhgi) 7037 return -ENOMEM; 7038 nh_grp->nhgi = nhgi; 7039 nhgi->nh_grp = nh_grp; 7040 mlxsw_sp_rt6 = list_first_entry(&fib6_entry->rt6_list, 7041 struct mlxsw_sp_rt6, list); 7042 nhgi->gateway = mlxsw_sp_rt6_is_gateway(mlxsw_sp, mlxsw_sp_rt6->rt); 7043 nhgi->count = fib6_entry->nrt6; 7044 for (i = 0; i < nhgi->count; i++) { 7045 struct fib6_info *rt = mlxsw_sp_rt6->rt; 7046 7047 nh = &nhgi->nexthops[i]; 7048 err = mlxsw_sp_nexthop6_init(mlxsw_sp, nh_grp, nh, rt); 7049 if (err) 7050 goto err_nexthop6_init; 7051 mlxsw_sp_rt6 = list_next_entry(mlxsw_sp_rt6, list); 7052 } 7053 nh_grp->nhgi = nhgi; 7054 err = mlxsw_sp_nexthop_group_inc(mlxsw_sp); 7055 if (err) 7056 goto err_group_inc; 7057 err = mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); 7058 if (err) 7059 goto err_group_refresh; 7060 7061 return 0; 7062 7063 err_group_refresh: 7064 mlxsw_sp_nexthop_group_dec(mlxsw_sp); 7065 err_group_inc: 7066 i = nhgi->count; 7067 err_nexthop6_init: 7068 for (i--; i >= 0; i--) { 7069 nh = &nhgi->nexthops[i]; 7070 mlxsw_sp_nexthop6_fini(mlxsw_sp, nh); 7071 } 7072 kfree(nhgi); 7073 return err; 7074 } 7075 7076 static void 7077 mlxsw_sp_nexthop6_group_info_fini(struct mlxsw_sp *mlxsw_sp, 7078 struct mlxsw_sp_nexthop_group *nh_grp) 7079 { 7080 struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi; 7081 int i; 7082 7083 mlxsw_sp_nexthop_group_dec(mlxsw_sp); 7084 for (i = nhgi->count - 1; i >= 0; i--) { 7085 struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i]; 7086 7087 mlxsw_sp_nexthop6_fini(mlxsw_sp, nh); 7088 } 7089 mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); 7090 WARN_ON_ONCE(nhgi->adj_index_valid); 7091 kfree(nhgi); 7092 } 7093 7094 static struct mlxsw_sp_nexthop_group * 7095 mlxsw_sp_nexthop6_group_create(struct mlxsw_sp *mlxsw_sp, 7096 struct mlxsw_sp_fib6_entry *fib6_entry) 7097 { 7098 struct mlxsw_sp_nexthop_group *nh_grp; 7099 int err; 7100 7101 nh_grp = kzalloc(sizeof(*nh_grp), GFP_KERNEL); 7102 if (!nh_grp) 7103 return ERR_PTR(-ENOMEM); 7104 INIT_LIST_HEAD(&nh_grp->vr_list); 7105 err = rhashtable_init(&nh_grp->vr_ht, 7106 &mlxsw_sp_nexthop_group_vr_ht_params); 7107 if (err) 7108 goto err_nexthop_group_vr_ht_init; 7109 INIT_LIST_HEAD(&nh_grp->fib_list); 7110 nh_grp->type = MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6; 7111 7112 err = mlxsw_sp_nexthop6_group_info_init(mlxsw_sp, nh_grp, fib6_entry); 7113 if (err) 7114 goto err_nexthop_group_info_init; 7115 7116 err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); 7117 if (err) 7118 goto err_nexthop_group_insert; 7119 7120 nh_grp->can_destroy = true; 7121 7122 return nh_grp; 7123 7124 err_nexthop_group_insert: 7125 mlxsw_sp_nexthop6_group_info_fini(mlxsw_sp, nh_grp); 7126 err_nexthop_group_info_init: 7127 rhashtable_destroy(&nh_grp->vr_ht); 7128 err_nexthop_group_vr_ht_init: 7129 kfree(nh_grp); 7130 return ERR_PTR(err); 7131 } 7132 7133 static void 7134 mlxsw_sp_nexthop6_group_destroy(struct mlxsw_sp *mlxsw_sp, 7135 struct mlxsw_sp_nexthop_group *nh_grp) 7136 { 7137 if (!nh_grp->can_destroy) 7138 return; 7139 mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); 7140 mlxsw_sp_nexthop6_group_info_fini(mlxsw_sp, nh_grp); 7141 WARN_ON_ONCE(!list_empty(&nh_grp->vr_list)); 7142 rhashtable_destroy(&nh_grp->vr_ht); 7143 kfree(nh_grp); 7144 } 7145 7146 static int mlxsw_sp_nexthop6_group_get(struct mlxsw_sp *mlxsw_sp, 7147 struct mlxsw_sp_fib6_entry *fib6_entry) 7148 { 7149 struct fib6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry); 7150 struct mlxsw_sp_nexthop_group *nh_grp; 7151 7152 if (rt->nh) { 7153 nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, 7154 rt->nh->id); 7155 if (WARN_ON_ONCE(!nh_grp)) 7156 return -EINVAL; 7157 goto out; 7158 } 7159 7160 nh_grp = mlxsw_sp_nexthop6_group_lookup(mlxsw_sp, fib6_entry); 7161 if (!nh_grp) { 7162 nh_grp = mlxsw_sp_nexthop6_group_create(mlxsw_sp, fib6_entry); 7163 if (IS_ERR(nh_grp)) 7164 return PTR_ERR(nh_grp); 7165 } 7166 7167 /* The route and the nexthop are described by the same struct, so we 7168 * need to the update the nexthop offload indication for the new route. 7169 */ 7170 __mlxsw_sp_nexthop6_group_offload_refresh(nh_grp, fib6_entry); 7171 7172 out: 7173 list_add_tail(&fib6_entry->common.nexthop_group_node, 7174 &nh_grp->fib_list); 7175 fib6_entry->common.nh_group = nh_grp; 7176 7177 return 0; 7178 } 7179 7180 static void mlxsw_sp_nexthop6_group_put(struct mlxsw_sp *mlxsw_sp, 7181 struct mlxsw_sp_fib_entry *fib_entry) 7182 { 7183 struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; 7184 7185 list_del(&fib_entry->nexthop_group_node); 7186 if (!list_empty(&nh_grp->fib_list)) 7187 return; 7188 7189 if (nh_grp->type == MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ) { 7190 mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp); 7191 return; 7192 } 7193 7194 mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, nh_grp); 7195 } 7196 7197 static int 7198 mlxsw_sp_nexthop6_group_update(struct mlxsw_sp *mlxsw_sp, 7199 struct mlxsw_sp_fib6_entry *fib6_entry) 7200 { 7201 struct mlxsw_sp_nexthop_group *old_nh_grp = fib6_entry->common.nh_group; 7202 struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node; 7203 int err; 7204 7205 mlxsw_sp_nexthop_group_vr_unlink(old_nh_grp, fib_node->fib); 7206 fib6_entry->common.nh_group = NULL; 7207 list_del(&fib6_entry->common.nexthop_group_node); 7208 7209 err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry); 7210 if (err) 7211 goto err_nexthop6_group_get; 7212 7213 err = mlxsw_sp_nexthop_group_vr_link(fib6_entry->common.nh_group, 7214 fib_node->fib); 7215 if (err) 7216 goto err_nexthop_group_vr_link; 7217 7218 /* In case this entry is offloaded, then the adjacency index 7219 * currently associated with it in the device's table is that 7220 * of the old group. Start using the new one instead. 7221 */ 7222 err = mlxsw_sp_fib_entry_update(mlxsw_sp, &fib6_entry->common); 7223 if (err) 7224 goto err_fib_entry_update; 7225 7226 if (list_empty(&old_nh_grp->fib_list)) 7227 mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, old_nh_grp); 7228 7229 return 0; 7230 7231 err_fib_entry_update: 7232 mlxsw_sp_nexthop_group_vr_unlink(fib6_entry->common.nh_group, 7233 fib_node->fib); 7234 err_nexthop_group_vr_link: 7235 mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common); 7236 err_nexthop6_group_get: 7237 list_add_tail(&fib6_entry->common.nexthop_group_node, 7238 &old_nh_grp->fib_list); 7239 fib6_entry->common.nh_group = old_nh_grp; 7240 mlxsw_sp_nexthop_group_vr_link(old_nh_grp, fib_node->fib); 7241 return err; 7242 } 7243 7244 static int 7245 mlxsw_sp_fib6_entry_nexthop_add(struct mlxsw_sp *mlxsw_sp, 7246 struct mlxsw_sp_fib6_entry *fib6_entry, 7247 struct fib6_info **rt_arr, unsigned int nrt6) 7248 { 7249 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 7250 int err, i; 7251 7252 for (i = 0; i < nrt6; i++) { 7253 mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt_arr[i]); 7254 if (IS_ERR(mlxsw_sp_rt6)) { 7255 err = PTR_ERR(mlxsw_sp_rt6); 7256 goto err_rt6_unwind; 7257 } 7258 7259 list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list); 7260 fib6_entry->nrt6++; 7261 } 7262 7263 err = mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry); 7264 if (err) 7265 goto err_rt6_unwind; 7266 7267 return 0; 7268 7269 err_rt6_unwind: 7270 for (; i > 0; i--) { 7271 fib6_entry->nrt6--; 7272 mlxsw_sp_rt6 = list_last_entry(&fib6_entry->rt6_list, 7273 struct mlxsw_sp_rt6, list); 7274 list_del(&mlxsw_sp_rt6->list); 7275 mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); 7276 } 7277 return err; 7278 } 7279 7280 static void 7281 mlxsw_sp_fib6_entry_nexthop_del(struct mlxsw_sp *mlxsw_sp, 7282 struct mlxsw_sp_fib6_entry *fib6_entry, 7283 struct fib6_info **rt_arr, unsigned int nrt6) 7284 { 7285 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 7286 int i; 7287 7288 for (i = 0; i < nrt6; i++) { 7289 mlxsw_sp_rt6 = mlxsw_sp_fib6_entry_rt_find(fib6_entry, 7290 rt_arr[i]); 7291 if (WARN_ON_ONCE(!mlxsw_sp_rt6)) 7292 continue; 7293 7294 fib6_entry->nrt6--; 7295 list_del(&mlxsw_sp_rt6->list); 7296 mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); 7297 } 7298 7299 mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry); 7300 } 7301 7302 static int 7303 mlxsw_sp_fib6_entry_type_set_local(struct mlxsw_sp *mlxsw_sp, 7304 struct mlxsw_sp_fib_entry *fib_entry, 7305 const struct fib6_info *rt) 7306 { 7307 struct mlxsw_sp_nexthop_group_info *nhgi = fib_entry->nh_group->nhgi; 7308 union mlxsw_sp_l3addr dip = { .addr6 = rt->fib6_dst.addr }; 7309 u32 tb_id = mlxsw_sp_fix_tb_id(rt->fib6_table->tb6_id); 7310 struct mlxsw_sp_router *router = mlxsw_sp->router; 7311 int ifindex = nhgi->nexthops[0].ifindex; 7312 struct mlxsw_sp_ipip_entry *ipip_entry; 7313 7314 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; 7315 ipip_entry = mlxsw_sp_ipip_entry_find_by_decap(mlxsw_sp, ifindex, 7316 MLXSW_SP_L3_PROTO_IPV6, 7317 dip); 7318 7319 if (ipip_entry && ipip_entry->ol_dev->flags & IFF_UP) { 7320 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP; 7321 return mlxsw_sp_fib_entry_decap_init(mlxsw_sp, fib_entry, 7322 ipip_entry); 7323 } 7324 if (mlxsw_sp_router_nve_is_decap(mlxsw_sp, tb_id, 7325 MLXSW_SP_L3_PROTO_IPV6, &dip)) { 7326 u32 tunnel_index; 7327 7328 tunnel_index = router->nve_decap_config.tunnel_index; 7329 fib_entry->decap.tunnel_index = tunnel_index; 7330 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP; 7331 } 7332 7333 return 0; 7334 } 7335 7336 static int mlxsw_sp_fib6_entry_type_set(struct mlxsw_sp *mlxsw_sp, 7337 struct mlxsw_sp_fib_entry *fib_entry, 7338 const struct fib6_info *rt) 7339 { 7340 if (rt->fib6_flags & RTF_LOCAL) 7341 return mlxsw_sp_fib6_entry_type_set_local(mlxsw_sp, fib_entry, 7342 rt); 7343 if (rt->fib6_flags & RTF_ANYCAST) 7344 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; 7345 else if (rt->fib6_type == RTN_BLACKHOLE) 7346 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE; 7347 else if (rt->fib6_flags & RTF_REJECT) 7348 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_UNREACHABLE; 7349 else if (fib_entry->nh_group->nhgi->gateway) 7350 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; 7351 else 7352 fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; 7353 7354 return 0; 7355 } 7356 7357 static void 7358 mlxsw_sp_fib6_entry_rt_destroy_all(struct mlxsw_sp_fib6_entry *fib6_entry) 7359 { 7360 struct mlxsw_sp_rt6 *mlxsw_sp_rt6, *tmp; 7361 7362 list_for_each_entry_safe(mlxsw_sp_rt6, tmp, &fib6_entry->rt6_list, 7363 list) { 7364 fib6_entry->nrt6--; 7365 list_del(&mlxsw_sp_rt6->list); 7366 mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); 7367 } 7368 } 7369 7370 static struct mlxsw_sp_fib6_entry * 7371 mlxsw_sp_fib6_entry_create(struct mlxsw_sp *mlxsw_sp, 7372 struct mlxsw_sp_fib_node *fib_node, 7373 struct fib6_info **rt_arr, unsigned int nrt6) 7374 { 7375 struct mlxsw_sp_fib6_entry *fib6_entry; 7376 struct mlxsw_sp_fib_entry *fib_entry; 7377 struct mlxsw_sp_rt6 *mlxsw_sp_rt6; 7378 int err, i; 7379 7380 fib6_entry = kzalloc(sizeof(*fib6_entry), GFP_KERNEL); 7381 if (!fib6_entry) 7382 return ERR_PTR(-ENOMEM); 7383 fib_entry = &fib6_entry->common; 7384 7385 INIT_LIST_HEAD(&fib6_entry->rt6_list); 7386 7387 for (i = 0; i < nrt6; i++) { 7388 mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt_arr[i]); 7389 if (IS_ERR(mlxsw_sp_rt6)) { 7390 err = PTR_ERR(mlxsw_sp_rt6); 7391 goto err_rt6_unwind; 7392 } 7393 list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list); 7394 fib6_entry->nrt6++; 7395 } 7396 7397 err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry); 7398 if (err) 7399 goto err_rt6_unwind; 7400 7401 err = mlxsw_sp_nexthop_group_vr_link(fib_entry->nh_group, 7402 fib_node->fib); 7403 if (err) 7404 goto err_nexthop_group_vr_link; 7405 7406 err = mlxsw_sp_fib6_entry_type_set(mlxsw_sp, fib_entry, rt_arr[0]); 7407 if (err) 7408 goto err_fib6_entry_type_set; 7409 7410 fib_entry->fib_node = fib_node; 7411 7412 return fib6_entry; 7413 7414 err_fib6_entry_type_set: 7415 mlxsw_sp_nexthop_group_vr_unlink(fib_entry->nh_group, fib_node->fib); 7416 err_nexthop_group_vr_link: 7417 mlxsw_sp_nexthop6_group_put(mlxsw_sp, fib_entry); 7418 err_rt6_unwind: 7419 for (; i > 0; i--) { 7420 fib6_entry->nrt6--; 7421 mlxsw_sp_rt6 = list_last_entry(&fib6_entry->rt6_list, 7422 struct mlxsw_sp_rt6, list); 7423 list_del(&mlxsw_sp_rt6->list); 7424 mlxsw_sp_rt6_destroy(mlxsw_sp_rt6); 7425 } 7426 kfree(fib6_entry); 7427 return ERR_PTR(err); 7428 } 7429 7430 static void 7431 mlxsw_sp_fib6_entry_type_unset(struct mlxsw_sp *mlxsw_sp, 7432 struct mlxsw_sp_fib6_entry *fib6_entry) 7433 { 7434 mlxsw_sp_fib_entry_type_unset(mlxsw_sp, &fib6_entry->common); 7435 } 7436 7437 static void mlxsw_sp_fib6_entry_destroy(struct mlxsw_sp *mlxsw_sp, 7438 struct mlxsw_sp_fib6_entry *fib6_entry) 7439 { 7440 struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node; 7441 7442 mlxsw_sp_fib6_entry_type_unset(mlxsw_sp, fib6_entry); 7443 mlxsw_sp_nexthop_group_vr_unlink(fib6_entry->common.nh_group, 7444 fib_node->fib); 7445 mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common); 7446 mlxsw_sp_fib6_entry_rt_destroy_all(fib6_entry); 7447 WARN_ON(fib6_entry->nrt6); 7448 kfree(fib6_entry); 7449 } 7450 7451 static struct mlxsw_sp_fib6_entry * 7452 mlxsw_sp_fib6_entry_lookup(struct mlxsw_sp *mlxsw_sp, 7453 const struct fib6_info *rt) 7454 { 7455 struct mlxsw_sp_fib6_entry *fib6_entry; 7456 struct mlxsw_sp_fib_node *fib_node; 7457 struct mlxsw_sp_fib *fib; 7458 struct fib6_info *cmp_rt; 7459 struct mlxsw_sp_vr *vr; 7460 7461 vr = mlxsw_sp_vr_find(mlxsw_sp, rt->fib6_table->tb6_id); 7462 if (!vr) 7463 return NULL; 7464 fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV6); 7465 7466 fib_node = mlxsw_sp_fib_node_lookup(fib, &rt->fib6_dst.addr, 7467 sizeof(rt->fib6_dst.addr), 7468 rt->fib6_dst.plen); 7469 if (!fib_node) 7470 return NULL; 7471 7472 fib6_entry = container_of(fib_node->fib_entry, 7473 struct mlxsw_sp_fib6_entry, common); 7474 cmp_rt = mlxsw_sp_fib6_entry_rt(fib6_entry); 7475 if (rt->fib6_table->tb6_id == cmp_rt->fib6_table->tb6_id && 7476 rt->fib6_metric == cmp_rt->fib6_metric && 7477 mlxsw_sp_fib6_entry_rt_find(fib6_entry, rt)) 7478 return fib6_entry; 7479 7480 return NULL; 7481 } 7482 7483 static bool mlxsw_sp_fib6_allow_replace(struct mlxsw_sp_fib6_entry *fib6_entry) 7484 { 7485 struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node; 7486 struct mlxsw_sp_fib6_entry *fib6_replaced; 7487 struct fib6_info *rt, *rt_replaced; 7488 7489 if (!fib_node->fib_entry) 7490 return true; 7491 7492 fib6_replaced = container_of(fib_node->fib_entry, 7493 struct mlxsw_sp_fib6_entry, 7494 common); 7495 rt = mlxsw_sp_fib6_entry_rt(fib6_entry); 7496 rt_replaced = mlxsw_sp_fib6_entry_rt(fib6_replaced); 7497 if (rt->fib6_table->tb6_id == RT_TABLE_MAIN && 7498 rt_replaced->fib6_table->tb6_id == RT_TABLE_LOCAL) 7499 return false; 7500 7501 return true; 7502 } 7503 7504 static int mlxsw_sp_router_fib6_replace(struct mlxsw_sp *mlxsw_sp, 7505 struct fib6_info **rt_arr, 7506 unsigned int nrt6) 7507 { 7508 struct mlxsw_sp_fib6_entry *fib6_entry, *fib6_replaced; 7509 struct mlxsw_sp_fib_entry *replaced; 7510 struct mlxsw_sp_fib_node *fib_node; 7511 struct fib6_info *rt = rt_arr[0]; 7512 int err; 7513 7514 if (rt->fib6_src.plen) 7515 return -EINVAL; 7516 7517 if (mlxsw_sp_fib6_rt_should_ignore(rt)) 7518 return 0; 7519 7520 if (rt->nh && !mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, rt->nh->id)) 7521 return 0; 7522 7523 fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, rt->fib6_table->tb6_id, 7524 &rt->fib6_dst.addr, 7525 sizeof(rt->fib6_dst.addr), 7526 rt->fib6_dst.plen, 7527 MLXSW_SP_L3_PROTO_IPV6); 7528 if (IS_ERR(fib_node)) 7529 return PTR_ERR(fib_node); 7530 7531 fib6_entry = mlxsw_sp_fib6_entry_create(mlxsw_sp, fib_node, rt_arr, 7532 nrt6); 7533 if (IS_ERR(fib6_entry)) { 7534 err = PTR_ERR(fib6_entry); 7535 goto err_fib6_entry_create; 7536 } 7537 7538 if (!mlxsw_sp_fib6_allow_replace(fib6_entry)) { 7539 mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); 7540 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 7541 return 0; 7542 } 7543 7544 replaced = fib_node->fib_entry; 7545 err = mlxsw_sp_fib_node_entry_link(mlxsw_sp, &fib6_entry->common); 7546 if (err) 7547 goto err_fib_node_entry_link; 7548 7549 /* Nothing to replace */ 7550 if (!replaced) 7551 return 0; 7552 7553 mlxsw_sp_fib_entry_hw_flags_clear(mlxsw_sp, replaced); 7554 fib6_replaced = container_of(replaced, struct mlxsw_sp_fib6_entry, 7555 common); 7556 mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_replaced); 7557 7558 return 0; 7559 7560 err_fib_node_entry_link: 7561 fib_node->fib_entry = replaced; 7562 mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); 7563 err_fib6_entry_create: 7564 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 7565 return err; 7566 } 7567 7568 static int mlxsw_sp_router_fib6_append(struct mlxsw_sp *mlxsw_sp, 7569 struct fib6_info **rt_arr, 7570 unsigned int nrt6) 7571 { 7572 struct mlxsw_sp_fib6_entry *fib6_entry; 7573 struct mlxsw_sp_fib_node *fib_node; 7574 struct fib6_info *rt = rt_arr[0]; 7575 int err; 7576 7577 if (rt->fib6_src.plen) 7578 return -EINVAL; 7579 7580 if (mlxsw_sp_fib6_rt_should_ignore(rt)) 7581 return 0; 7582 7583 fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, rt->fib6_table->tb6_id, 7584 &rt->fib6_dst.addr, 7585 sizeof(rt->fib6_dst.addr), 7586 rt->fib6_dst.plen, 7587 MLXSW_SP_L3_PROTO_IPV6); 7588 if (IS_ERR(fib_node)) 7589 return PTR_ERR(fib_node); 7590 7591 if (WARN_ON_ONCE(!fib_node->fib_entry)) { 7592 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 7593 return -EINVAL; 7594 } 7595 7596 fib6_entry = container_of(fib_node->fib_entry, 7597 struct mlxsw_sp_fib6_entry, common); 7598 err = mlxsw_sp_fib6_entry_nexthop_add(mlxsw_sp, fib6_entry, rt_arr, 7599 nrt6); 7600 if (err) 7601 goto err_fib6_entry_nexthop_add; 7602 7603 return 0; 7604 7605 err_fib6_entry_nexthop_add: 7606 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 7607 return err; 7608 } 7609 7610 static void mlxsw_sp_router_fib6_del(struct mlxsw_sp *mlxsw_sp, 7611 struct fib6_info **rt_arr, 7612 unsigned int nrt6) 7613 { 7614 struct mlxsw_sp_fib6_entry *fib6_entry; 7615 struct mlxsw_sp_fib_node *fib_node; 7616 struct fib6_info *rt = rt_arr[0]; 7617 7618 if (mlxsw_sp_fib6_rt_should_ignore(rt)) 7619 return; 7620 7621 /* Multipath routes are first added to the FIB trie and only then 7622 * notified. If we vetoed the addition, we will get a delete 7623 * notification for a route we do not have. Therefore, do not warn if 7624 * route was not found. 7625 */ 7626 fib6_entry = mlxsw_sp_fib6_entry_lookup(mlxsw_sp, rt); 7627 if (!fib6_entry) 7628 return; 7629 7630 /* If not all the nexthops are deleted, then only reduce the nexthop 7631 * group. 7632 */ 7633 if (nrt6 != fib6_entry->nrt6) { 7634 mlxsw_sp_fib6_entry_nexthop_del(mlxsw_sp, fib6_entry, rt_arr, 7635 nrt6); 7636 return; 7637 } 7638 7639 fib_node = fib6_entry->common.fib_node; 7640 7641 mlxsw_sp_fib_node_entry_unlink(mlxsw_sp, &fib6_entry->common); 7642 mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); 7643 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 7644 } 7645 7646 static struct mlxsw_sp_mr_table * 7647 mlxsw_sp_router_fibmr_family_to_table(struct mlxsw_sp_vr *vr, int family) 7648 { 7649 if (family == RTNL_FAMILY_IPMR) 7650 return vr->mr_table[MLXSW_SP_L3_PROTO_IPV4]; 7651 else 7652 return vr->mr_table[MLXSW_SP_L3_PROTO_IPV6]; 7653 } 7654 7655 static int mlxsw_sp_router_fibmr_add(struct mlxsw_sp *mlxsw_sp, 7656 struct mfc_entry_notifier_info *men_info, 7657 bool replace) 7658 { 7659 struct mlxsw_sp_mr_table *mrt; 7660 struct mlxsw_sp_vr *vr; 7661 7662 vr = mlxsw_sp_vr_get(mlxsw_sp, men_info->tb_id, NULL); 7663 if (IS_ERR(vr)) 7664 return PTR_ERR(vr); 7665 7666 mrt = mlxsw_sp_router_fibmr_family_to_table(vr, men_info->info.family); 7667 return mlxsw_sp_mr_route_add(mrt, men_info->mfc, replace); 7668 } 7669 7670 static void mlxsw_sp_router_fibmr_del(struct mlxsw_sp *mlxsw_sp, 7671 struct mfc_entry_notifier_info *men_info) 7672 { 7673 struct mlxsw_sp_mr_table *mrt; 7674 struct mlxsw_sp_vr *vr; 7675 7676 vr = mlxsw_sp_vr_find(mlxsw_sp, men_info->tb_id); 7677 if (WARN_ON(!vr)) 7678 return; 7679 7680 mrt = mlxsw_sp_router_fibmr_family_to_table(vr, men_info->info.family); 7681 mlxsw_sp_mr_route_del(mrt, men_info->mfc); 7682 mlxsw_sp_vr_put(mlxsw_sp, vr); 7683 } 7684 7685 static int 7686 mlxsw_sp_router_fibmr_vif_add(struct mlxsw_sp *mlxsw_sp, 7687 struct vif_entry_notifier_info *ven_info) 7688 { 7689 struct mlxsw_sp_mr_table *mrt; 7690 struct mlxsw_sp_rif *rif; 7691 struct mlxsw_sp_vr *vr; 7692 7693 vr = mlxsw_sp_vr_get(mlxsw_sp, ven_info->tb_id, NULL); 7694 if (IS_ERR(vr)) 7695 return PTR_ERR(vr); 7696 7697 mrt = mlxsw_sp_router_fibmr_family_to_table(vr, ven_info->info.family); 7698 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, ven_info->dev); 7699 return mlxsw_sp_mr_vif_add(mrt, ven_info->dev, 7700 ven_info->vif_index, 7701 ven_info->vif_flags, rif); 7702 } 7703 7704 static void 7705 mlxsw_sp_router_fibmr_vif_del(struct mlxsw_sp *mlxsw_sp, 7706 struct vif_entry_notifier_info *ven_info) 7707 { 7708 struct mlxsw_sp_mr_table *mrt; 7709 struct mlxsw_sp_vr *vr; 7710 7711 vr = mlxsw_sp_vr_find(mlxsw_sp, ven_info->tb_id); 7712 if (WARN_ON(!vr)) 7713 return; 7714 7715 mrt = mlxsw_sp_router_fibmr_family_to_table(vr, ven_info->info.family); 7716 mlxsw_sp_mr_vif_del(mrt, ven_info->vif_index); 7717 mlxsw_sp_vr_put(mlxsw_sp, vr); 7718 } 7719 7720 static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, 7721 struct mlxsw_sp_fib_node *fib_node) 7722 { 7723 struct mlxsw_sp_fib4_entry *fib4_entry; 7724 7725 fib4_entry = container_of(fib_node->fib_entry, 7726 struct mlxsw_sp_fib4_entry, common); 7727 mlxsw_sp_fib_node_entry_unlink(mlxsw_sp, fib_node->fib_entry); 7728 mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry); 7729 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 7730 } 7731 7732 static void mlxsw_sp_fib6_node_flush(struct mlxsw_sp *mlxsw_sp, 7733 struct mlxsw_sp_fib_node *fib_node) 7734 { 7735 struct mlxsw_sp_fib6_entry *fib6_entry; 7736 7737 fib6_entry = container_of(fib_node->fib_entry, 7738 struct mlxsw_sp_fib6_entry, common); 7739 mlxsw_sp_fib_node_entry_unlink(mlxsw_sp, fib_node->fib_entry); 7740 mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry); 7741 mlxsw_sp_fib_node_put(mlxsw_sp, fib_node); 7742 } 7743 7744 static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, 7745 struct mlxsw_sp_fib_node *fib_node) 7746 { 7747 switch (fib_node->fib->proto) { 7748 case MLXSW_SP_L3_PROTO_IPV4: 7749 mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); 7750 break; 7751 case MLXSW_SP_L3_PROTO_IPV6: 7752 mlxsw_sp_fib6_node_flush(mlxsw_sp, fib_node); 7753 break; 7754 } 7755 } 7756 7757 static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, 7758 struct mlxsw_sp_vr *vr, 7759 enum mlxsw_sp_l3proto proto) 7760 { 7761 struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); 7762 struct mlxsw_sp_fib_node *fib_node, *tmp; 7763 7764 list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { 7765 bool do_break = &tmp->list == &fib->node_list; 7766 7767 mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); 7768 if (do_break) 7769 break; 7770 } 7771 } 7772 7773 static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) 7774 { 7775 int max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); 7776 int i, j; 7777 7778 for (i = 0; i < max_vrs; i++) { 7779 struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i]; 7780 7781 if (!mlxsw_sp_vr_is_used(vr)) 7782 continue; 7783 7784 for (j = 0; j < MLXSW_SP_L3_PROTO_MAX; j++) 7785 mlxsw_sp_mr_table_flush(vr->mr_table[j]); 7786 mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); 7787 7788 /* If virtual router was only used for IPv4, then it's no 7789 * longer used. 7790 */ 7791 if (!mlxsw_sp_vr_is_used(vr)) 7792 continue; 7793 mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV6); 7794 } 7795 } 7796 7797 struct mlxsw_sp_fib6_event_work { 7798 struct fib6_info **rt_arr; 7799 unsigned int nrt6; 7800 }; 7801 7802 struct mlxsw_sp_fib_event_work { 7803 struct work_struct work; 7804 netdevice_tracker dev_tracker; 7805 union { 7806 struct mlxsw_sp_fib6_event_work fib6_work; 7807 struct fib_entry_notifier_info fen_info; 7808 struct fib_rule_notifier_info fr_info; 7809 struct fib_nh_notifier_info fnh_info; 7810 struct mfc_entry_notifier_info men_info; 7811 struct vif_entry_notifier_info ven_info; 7812 }; 7813 struct mlxsw_sp *mlxsw_sp; 7814 unsigned long event; 7815 }; 7816 7817 static int 7818 mlxsw_sp_router_fib6_work_init(struct mlxsw_sp_fib6_event_work *fib6_work, 7819 struct fib6_entry_notifier_info *fen6_info) 7820 { 7821 struct fib6_info *rt = fen6_info->rt; 7822 struct fib6_info **rt_arr; 7823 struct fib6_info *iter; 7824 unsigned int nrt6; 7825 int i = 0; 7826 7827 nrt6 = fen6_info->nsiblings + 1; 7828 7829 rt_arr = kcalloc(nrt6, sizeof(struct fib6_info *), GFP_ATOMIC); 7830 if (!rt_arr) 7831 return -ENOMEM; 7832 7833 fib6_work->rt_arr = rt_arr; 7834 fib6_work->nrt6 = nrt6; 7835 7836 rt_arr[0] = rt; 7837 fib6_info_hold(rt); 7838 7839 if (!fen6_info->nsiblings) 7840 return 0; 7841 7842 list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) { 7843 if (i == fen6_info->nsiblings) 7844 break; 7845 7846 rt_arr[i + 1] = iter; 7847 fib6_info_hold(iter); 7848 i++; 7849 } 7850 WARN_ON_ONCE(i != fen6_info->nsiblings); 7851 7852 return 0; 7853 } 7854 7855 static void 7856 mlxsw_sp_router_fib6_work_fini(struct mlxsw_sp_fib6_event_work *fib6_work) 7857 { 7858 int i; 7859 7860 for (i = 0; i < fib6_work->nrt6; i++) 7861 mlxsw_sp_rt6_release(fib6_work->rt_arr[i]); 7862 kfree(fib6_work->rt_arr); 7863 } 7864 7865 static void mlxsw_sp_router_fib4_event_work(struct work_struct *work) 7866 { 7867 struct mlxsw_sp_fib_event_work *fib_work = 7868 container_of(work, struct mlxsw_sp_fib_event_work, work); 7869 struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; 7870 int err; 7871 7872 mutex_lock(&mlxsw_sp->router->lock); 7873 mlxsw_sp_span_respin(mlxsw_sp); 7874 7875 switch (fib_work->event) { 7876 case FIB_EVENT_ENTRY_REPLACE: 7877 err = mlxsw_sp_router_fib4_replace(mlxsw_sp, 7878 &fib_work->fen_info); 7879 if (err) { 7880 dev_warn(mlxsw_sp->bus_info->dev, "FIB replace failed.\n"); 7881 mlxsw_sp_fib4_offload_failed_flag_set(mlxsw_sp, 7882 &fib_work->fen_info); 7883 } 7884 fib_info_put(fib_work->fen_info.fi); 7885 break; 7886 case FIB_EVENT_ENTRY_DEL: 7887 mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); 7888 fib_info_put(fib_work->fen_info.fi); 7889 break; 7890 case FIB_EVENT_NH_ADD: 7891 case FIB_EVENT_NH_DEL: 7892 mlxsw_sp_nexthop4_event(mlxsw_sp, fib_work->event, 7893 fib_work->fnh_info.fib_nh); 7894 fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); 7895 break; 7896 } 7897 mutex_unlock(&mlxsw_sp->router->lock); 7898 kfree(fib_work); 7899 } 7900 7901 static void mlxsw_sp_router_fib6_event_work(struct work_struct *work) 7902 { 7903 struct mlxsw_sp_fib_event_work *fib_work = 7904 container_of(work, struct mlxsw_sp_fib_event_work, work); 7905 struct mlxsw_sp_fib6_event_work *fib6_work = &fib_work->fib6_work; 7906 struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; 7907 int err; 7908 7909 mutex_lock(&mlxsw_sp->router->lock); 7910 mlxsw_sp_span_respin(mlxsw_sp); 7911 7912 switch (fib_work->event) { 7913 case FIB_EVENT_ENTRY_REPLACE: 7914 err = mlxsw_sp_router_fib6_replace(mlxsw_sp, 7915 fib6_work->rt_arr, 7916 fib6_work->nrt6); 7917 if (err) { 7918 dev_warn(mlxsw_sp->bus_info->dev, "FIB replace failed.\n"); 7919 mlxsw_sp_fib6_offload_failed_flag_set(mlxsw_sp, 7920 fib6_work->rt_arr, 7921 fib6_work->nrt6); 7922 } 7923 mlxsw_sp_router_fib6_work_fini(fib6_work); 7924 break; 7925 case FIB_EVENT_ENTRY_APPEND: 7926 err = mlxsw_sp_router_fib6_append(mlxsw_sp, 7927 fib6_work->rt_arr, 7928 fib6_work->nrt6); 7929 if (err) { 7930 dev_warn(mlxsw_sp->bus_info->dev, "FIB append failed.\n"); 7931 mlxsw_sp_fib6_offload_failed_flag_set(mlxsw_sp, 7932 fib6_work->rt_arr, 7933 fib6_work->nrt6); 7934 } 7935 mlxsw_sp_router_fib6_work_fini(fib6_work); 7936 break; 7937 case FIB_EVENT_ENTRY_DEL: 7938 mlxsw_sp_router_fib6_del(mlxsw_sp, 7939 fib6_work->rt_arr, 7940 fib6_work->nrt6); 7941 mlxsw_sp_router_fib6_work_fini(fib6_work); 7942 break; 7943 } 7944 mutex_unlock(&mlxsw_sp->router->lock); 7945 kfree(fib_work); 7946 } 7947 7948 static void mlxsw_sp_router_fibmr_event_work(struct work_struct *work) 7949 { 7950 struct mlxsw_sp_fib_event_work *fib_work = 7951 container_of(work, struct mlxsw_sp_fib_event_work, work); 7952 struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; 7953 bool replace; 7954 int err; 7955 7956 rtnl_lock(); 7957 mutex_lock(&mlxsw_sp->router->lock); 7958 switch (fib_work->event) { 7959 case FIB_EVENT_ENTRY_REPLACE: 7960 case FIB_EVENT_ENTRY_ADD: 7961 replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; 7962 7963 err = mlxsw_sp_router_fibmr_add(mlxsw_sp, &fib_work->men_info, 7964 replace); 7965 if (err) 7966 dev_warn(mlxsw_sp->bus_info->dev, "MR entry add failed.\n"); 7967 mr_cache_put(fib_work->men_info.mfc); 7968 break; 7969 case FIB_EVENT_ENTRY_DEL: 7970 mlxsw_sp_router_fibmr_del(mlxsw_sp, &fib_work->men_info); 7971 mr_cache_put(fib_work->men_info.mfc); 7972 break; 7973 case FIB_EVENT_VIF_ADD: 7974 err = mlxsw_sp_router_fibmr_vif_add(mlxsw_sp, 7975 &fib_work->ven_info); 7976 if (err) 7977 dev_warn(mlxsw_sp->bus_info->dev, "MR VIF add failed.\n"); 7978 netdev_put(fib_work->ven_info.dev, &fib_work->dev_tracker); 7979 break; 7980 case FIB_EVENT_VIF_DEL: 7981 mlxsw_sp_router_fibmr_vif_del(mlxsw_sp, 7982 &fib_work->ven_info); 7983 netdev_put(fib_work->ven_info.dev, &fib_work->dev_tracker); 7984 break; 7985 } 7986 mutex_unlock(&mlxsw_sp->router->lock); 7987 rtnl_unlock(); 7988 kfree(fib_work); 7989 } 7990 7991 static void mlxsw_sp_router_fib4_event(struct mlxsw_sp_fib_event_work *fib_work, 7992 struct fib_notifier_info *info) 7993 { 7994 struct fib_entry_notifier_info *fen_info; 7995 struct fib_nh_notifier_info *fnh_info; 7996 7997 switch (fib_work->event) { 7998 case FIB_EVENT_ENTRY_REPLACE: 7999 case FIB_EVENT_ENTRY_DEL: 8000 fen_info = container_of(info, struct fib_entry_notifier_info, 8001 info); 8002 fib_work->fen_info = *fen_info; 8003 /* Take reference on fib_info to prevent it from being 8004 * freed while work is queued. Release it afterwards. 8005 */ 8006 fib_info_hold(fib_work->fen_info.fi); 8007 break; 8008 case FIB_EVENT_NH_ADD: 8009 case FIB_EVENT_NH_DEL: 8010 fnh_info = container_of(info, struct fib_nh_notifier_info, 8011 info); 8012 fib_work->fnh_info = *fnh_info; 8013 fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); 8014 break; 8015 } 8016 } 8017 8018 static int mlxsw_sp_router_fib6_event(struct mlxsw_sp_fib_event_work *fib_work, 8019 struct fib_notifier_info *info) 8020 { 8021 struct fib6_entry_notifier_info *fen6_info; 8022 int err; 8023 8024 switch (fib_work->event) { 8025 case FIB_EVENT_ENTRY_REPLACE: 8026 case FIB_EVENT_ENTRY_APPEND: 8027 case FIB_EVENT_ENTRY_DEL: 8028 fen6_info = container_of(info, struct fib6_entry_notifier_info, 8029 info); 8030 err = mlxsw_sp_router_fib6_work_init(&fib_work->fib6_work, 8031 fen6_info); 8032 if (err) 8033 return err; 8034 break; 8035 } 8036 8037 return 0; 8038 } 8039 8040 static void 8041 mlxsw_sp_router_fibmr_event(struct mlxsw_sp_fib_event_work *fib_work, 8042 struct fib_notifier_info *info) 8043 { 8044 switch (fib_work->event) { 8045 case FIB_EVENT_ENTRY_REPLACE: 8046 case FIB_EVENT_ENTRY_ADD: 8047 case FIB_EVENT_ENTRY_DEL: 8048 memcpy(&fib_work->men_info, info, sizeof(fib_work->men_info)); 8049 mr_cache_hold(fib_work->men_info.mfc); 8050 break; 8051 case FIB_EVENT_VIF_ADD: 8052 case FIB_EVENT_VIF_DEL: 8053 memcpy(&fib_work->ven_info, info, sizeof(fib_work->ven_info)); 8054 netdev_hold(fib_work->ven_info.dev, &fib_work->dev_tracker, 8055 GFP_ATOMIC); 8056 break; 8057 } 8058 } 8059 8060 static int mlxsw_sp_router_fib_rule_event(unsigned long event, 8061 struct fib_notifier_info *info, 8062 struct mlxsw_sp *mlxsw_sp) 8063 { 8064 struct netlink_ext_ack *extack = info->extack; 8065 struct fib_rule_notifier_info *fr_info; 8066 struct fib_rule *rule; 8067 int err = 0; 8068 8069 /* nothing to do at the moment */ 8070 if (event == FIB_EVENT_RULE_DEL) 8071 return 0; 8072 8073 fr_info = container_of(info, struct fib_rule_notifier_info, info); 8074 rule = fr_info->rule; 8075 8076 /* Rule only affects locally generated traffic */ 8077 if (rule->iifindex == mlxsw_sp_net(mlxsw_sp)->loopback_dev->ifindex) 8078 return 0; 8079 8080 switch (info->family) { 8081 case AF_INET: 8082 if (!fib4_rule_default(rule) && !rule->l3mdev) 8083 err = -EOPNOTSUPP; 8084 break; 8085 case AF_INET6: 8086 if (!fib6_rule_default(rule) && !rule->l3mdev) 8087 err = -EOPNOTSUPP; 8088 break; 8089 case RTNL_FAMILY_IPMR: 8090 if (!ipmr_rule_default(rule) && !rule->l3mdev) 8091 err = -EOPNOTSUPP; 8092 break; 8093 case RTNL_FAMILY_IP6MR: 8094 if (!ip6mr_rule_default(rule) && !rule->l3mdev) 8095 err = -EOPNOTSUPP; 8096 break; 8097 } 8098 8099 if (err < 0) 8100 NL_SET_ERR_MSG_MOD(extack, "FIB rules not supported"); 8101 8102 return err; 8103 } 8104 8105 /* Called with rcu_read_lock() */ 8106 static int mlxsw_sp_router_fib_event(struct notifier_block *nb, 8107 unsigned long event, void *ptr) 8108 { 8109 struct mlxsw_sp_fib_event_work *fib_work; 8110 struct fib_notifier_info *info = ptr; 8111 struct mlxsw_sp_router *router; 8112 int err; 8113 8114 if ((info->family != AF_INET && info->family != AF_INET6 && 8115 info->family != RTNL_FAMILY_IPMR && 8116 info->family != RTNL_FAMILY_IP6MR)) 8117 return NOTIFY_DONE; 8118 8119 router = container_of(nb, struct mlxsw_sp_router, fib_nb); 8120 8121 switch (event) { 8122 case FIB_EVENT_RULE_ADD: 8123 case FIB_EVENT_RULE_DEL: 8124 err = mlxsw_sp_router_fib_rule_event(event, info, 8125 router->mlxsw_sp); 8126 return notifier_from_errno(err); 8127 case FIB_EVENT_ENTRY_ADD: 8128 case FIB_EVENT_ENTRY_REPLACE: 8129 case FIB_EVENT_ENTRY_APPEND: 8130 if (info->family == AF_INET) { 8131 struct fib_entry_notifier_info *fen_info = ptr; 8132 8133 if (fen_info->fi->fib_nh_is_v6) { 8134 NL_SET_ERR_MSG_MOD(info->extack, "IPv6 gateway with IPv4 route is not supported"); 8135 return notifier_from_errno(-EINVAL); 8136 } 8137 } 8138 break; 8139 } 8140 8141 fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); 8142 if (!fib_work) 8143 return NOTIFY_BAD; 8144 8145 fib_work->mlxsw_sp = router->mlxsw_sp; 8146 fib_work->event = event; 8147 8148 switch (info->family) { 8149 case AF_INET: 8150 INIT_WORK(&fib_work->work, mlxsw_sp_router_fib4_event_work); 8151 mlxsw_sp_router_fib4_event(fib_work, info); 8152 break; 8153 case AF_INET6: 8154 INIT_WORK(&fib_work->work, mlxsw_sp_router_fib6_event_work); 8155 err = mlxsw_sp_router_fib6_event(fib_work, info); 8156 if (err) 8157 goto err_fib_event; 8158 break; 8159 case RTNL_FAMILY_IP6MR: 8160 case RTNL_FAMILY_IPMR: 8161 INIT_WORK(&fib_work->work, mlxsw_sp_router_fibmr_event_work); 8162 mlxsw_sp_router_fibmr_event(fib_work, info); 8163 break; 8164 } 8165 8166 mlxsw_core_schedule_work(&fib_work->work); 8167 8168 return NOTIFY_DONE; 8169 8170 err_fib_event: 8171 kfree(fib_work); 8172 return NOTIFY_BAD; 8173 } 8174 8175 static struct mlxsw_sp_rif * 8176 mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, 8177 const struct net_device *dev) 8178 { 8179 int max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); 8180 int i; 8181 8182 for (i = 0; i < max_rifs; i++) 8183 if (mlxsw_sp->router->rifs[i] && 8184 mlxsw_sp_rif_dev_is(mlxsw_sp->router->rifs[i], dev)) 8185 return mlxsw_sp->router->rifs[i]; 8186 8187 return NULL; 8188 } 8189 8190 static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) 8191 { 8192 char ritr_pl[MLXSW_REG_RITR_LEN]; 8193 int err; 8194 8195 mlxsw_reg_ritr_rif_pack(ritr_pl, rif); 8196 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 8197 if (err) 8198 return err; 8199 8200 mlxsw_reg_ritr_enable_set(ritr_pl, false); 8201 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 8202 } 8203 8204 static int mlxsw_sp_router_rif_made_sync(struct mlxsw_sp *mlxsw_sp, 8205 struct mlxsw_sp_rif *rif) 8206 { 8207 int err; 8208 8209 err = mlxsw_sp_neigh_rif_made_sync(mlxsw_sp, rif); 8210 if (err) 8211 return err; 8212 8213 err = mlxsw_sp_nexthop_rif_made_sync(mlxsw_sp, rif); 8214 if (err) 8215 goto err_nexthop; 8216 8217 return 0; 8218 8219 err_nexthop: 8220 mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); 8221 return err; 8222 } 8223 8224 static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, 8225 struct mlxsw_sp_rif *rif) 8226 { 8227 /* Signal to nexthop cleanup that the RIF is going away. */ 8228 rif->crif->rif = NULL; 8229 8230 mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index); 8231 mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif); 8232 mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); 8233 } 8234 8235 static bool __mlxsw_sp_dev_addr_list_empty(const struct net_device *dev) 8236 { 8237 struct inet6_dev *inet6_dev; 8238 struct in_device *idev; 8239 8240 idev = __in_dev_get_rcu(dev); 8241 if (idev && idev->ifa_list) 8242 return false; 8243 8244 inet6_dev = __in6_dev_get(dev); 8245 if (inet6_dev && !list_empty(&inet6_dev->addr_list)) 8246 return false; 8247 8248 return true; 8249 } 8250 8251 static bool mlxsw_sp_dev_addr_list_empty(const struct net_device *dev) 8252 { 8253 bool addr_list_empty; 8254 8255 rcu_read_lock(); 8256 addr_list_empty = __mlxsw_sp_dev_addr_list_empty(dev); 8257 rcu_read_unlock(); 8258 8259 return addr_list_empty; 8260 } 8261 8262 static bool 8263 mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif, struct net_device *dev, 8264 unsigned long event) 8265 { 8266 bool addr_list_empty; 8267 8268 switch (event) { 8269 case NETDEV_UP: 8270 return rif == NULL; 8271 case NETDEV_DOWN: 8272 addr_list_empty = mlxsw_sp_dev_addr_list_empty(dev); 8273 8274 /* macvlans do not have a RIF, but rather piggy back on the 8275 * RIF of their lower device. 8276 */ 8277 if (netif_is_macvlan(dev) && addr_list_empty) 8278 return true; 8279 8280 if (rif && addr_list_empty && 8281 !netif_is_l3_slave(mlxsw_sp_rif_dev(rif))) 8282 return true; 8283 /* It is possible we already removed the RIF ourselves 8284 * if it was assigned to a netdev that is now a bridge 8285 * or LAG slave. 8286 */ 8287 return false; 8288 } 8289 8290 return false; 8291 } 8292 8293 static enum mlxsw_sp_rif_type 8294 mlxsw_sp_dev_rif_type(const struct mlxsw_sp *mlxsw_sp, 8295 const struct net_device *dev) 8296 { 8297 enum mlxsw_sp_fid_type type; 8298 8299 if (mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL)) 8300 return MLXSW_SP_RIF_TYPE_IPIP_LB; 8301 8302 /* Otherwise RIF type is derived from the type of the underlying FID. */ 8303 if (is_vlan_dev(dev) && netif_is_bridge_master(vlan_dev_real_dev(dev))) 8304 type = MLXSW_SP_FID_TYPE_8021Q; 8305 else if (netif_is_bridge_master(dev) && br_vlan_enabled(dev)) 8306 type = MLXSW_SP_FID_TYPE_8021Q; 8307 else if (netif_is_bridge_master(dev)) 8308 type = MLXSW_SP_FID_TYPE_8021D; 8309 else 8310 type = MLXSW_SP_FID_TYPE_RFID; 8311 8312 return mlxsw_sp_fid_type_rif_type(mlxsw_sp, type); 8313 } 8314 8315 static int mlxsw_sp_rif_index_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_rif_index, 8316 u8 rif_entries) 8317 { 8318 *p_rif_index = gen_pool_alloc(mlxsw_sp->router->rifs_table, 8319 rif_entries); 8320 if (*p_rif_index == 0) 8321 return -ENOBUFS; 8322 *p_rif_index -= MLXSW_SP_ROUTER_GENALLOC_OFFSET; 8323 8324 /* RIF indexes must be aligned to the allocation size. */ 8325 WARN_ON_ONCE(*p_rif_index % rif_entries); 8326 8327 return 0; 8328 } 8329 8330 static void mlxsw_sp_rif_index_free(struct mlxsw_sp *mlxsw_sp, u16 rif_index, 8331 u8 rif_entries) 8332 { 8333 gen_pool_free(mlxsw_sp->router->rifs_table, 8334 MLXSW_SP_ROUTER_GENALLOC_OFFSET + rif_index, rif_entries); 8335 } 8336 8337 static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index, 8338 u16 vr_id, 8339 struct mlxsw_sp_crif *crif) 8340 { 8341 struct net_device *l3_dev = crif ? crif->key.dev : NULL; 8342 struct mlxsw_sp_rif *rif; 8343 8344 rif = kzalloc(rif_size, GFP_KERNEL); 8345 if (!rif) 8346 return NULL; 8347 8348 INIT_LIST_HEAD(&rif->neigh_list); 8349 if (l3_dev) { 8350 ether_addr_copy(rif->addr, l3_dev->dev_addr); 8351 rif->mtu = l3_dev->mtu; 8352 } 8353 rif->vr_id = vr_id; 8354 rif->rif_index = rif_index; 8355 if (crif) { 8356 rif->crif = crif; 8357 crif->rif = rif; 8358 } 8359 8360 return rif; 8361 } 8362 8363 static void mlxsw_sp_rif_free(struct mlxsw_sp_rif *rif) 8364 { 8365 WARN_ON(!list_empty(&rif->neigh_list)); 8366 8367 if (rif->crif) 8368 rif->crif->rif = NULL; 8369 kfree(rif); 8370 } 8371 8372 struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp, 8373 u16 rif_index) 8374 { 8375 return mlxsw_sp->router->rifs[rif_index]; 8376 } 8377 8378 u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif) 8379 { 8380 return rif->rif_index; 8381 } 8382 8383 u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *lb_rif) 8384 { 8385 return lb_rif->common.rif_index; 8386 } 8387 8388 u16 mlxsw_sp_ipip_lb_ul_rif_id(const struct mlxsw_sp_rif_ipip_lb *lb_rif) 8389 { 8390 return lb_rif->ul_rif_id; 8391 } 8392 8393 static bool 8394 mlxsw_sp_router_port_l3_stats_enabled(struct mlxsw_sp_rif *rif) 8395 { 8396 return mlxsw_sp_rif_counter_valid_get(rif, 8397 MLXSW_SP_RIF_COUNTER_EGRESS) && 8398 mlxsw_sp_rif_counter_valid_get(rif, 8399 MLXSW_SP_RIF_COUNTER_INGRESS); 8400 } 8401 8402 static int 8403 mlxsw_sp_router_port_l3_stats_enable(struct mlxsw_sp_rif *rif) 8404 { 8405 int err; 8406 8407 err = mlxsw_sp_rif_counter_alloc(rif, MLXSW_SP_RIF_COUNTER_INGRESS); 8408 if (err) 8409 return err; 8410 8411 /* Clear stale data. */ 8412 err = mlxsw_sp_rif_counter_fetch_clear(rif, 8413 MLXSW_SP_RIF_COUNTER_INGRESS, 8414 NULL); 8415 if (err) 8416 goto err_clear_ingress; 8417 8418 err = mlxsw_sp_rif_counter_alloc(rif, MLXSW_SP_RIF_COUNTER_EGRESS); 8419 if (err) 8420 goto err_alloc_egress; 8421 8422 /* Clear stale data. */ 8423 err = mlxsw_sp_rif_counter_fetch_clear(rif, 8424 MLXSW_SP_RIF_COUNTER_EGRESS, 8425 NULL); 8426 if (err) 8427 goto err_clear_egress; 8428 8429 return 0; 8430 8431 err_clear_egress: 8432 mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_EGRESS); 8433 err_alloc_egress: 8434 err_clear_ingress: 8435 mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_INGRESS); 8436 return err; 8437 } 8438 8439 static void 8440 mlxsw_sp_router_port_l3_stats_disable(struct mlxsw_sp_rif *rif) 8441 { 8442 mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_EGRESS); 8443 mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_INGRESS); 8444 } 8445 8446 static void 8447 mlxsw_sp_router_port_l3_stats_report_used(struct mlxsw_sp_rif *rif, 8448 struct netdev_notifier_offload_xstats_info *info) 8449 { 8450 if (!mlxsw_sp_router_port_l3_stats_enabled(rif)) 8451 return; 8452 netdev_offload_xstats_report_used(info->report_used); 8453 } 8454 8455 static int 8456 mlxsw_sp_router_port_l3_stats_fetch(struct mlxsw_sp_rif *rif, 8457 struct rtnl_hw_stats64 *p_stats) 8458 { 8459 struct mlxsw_sp_rif_counter_set_basic ingress; 8460 struct mlxsw_sp_rif_counter_set_basic egress; 8461 int err; 8462 8463 err = mlxsw_sp_rif_counter_fetch_clear(rif, 8464 MLXSW_SP_RIF_COUNTER_INGRESS, 8465 &ingress); 8466 if (err) 8467 return err; 8468 8469 err = mlxsw_sp_rif_counter_fetch_clear(rif, 8470 MLXSW_SP_RIF_COUNTER_EGRESS, 8471 &egress); 8472 if (err) 8473 return err; 8474 8475 #define MLXSW_SP_ROUTER_ALL_GOOD(SET, SFX) \ 8476 ((SET.good_unicast_ ## SFX) + \ 8477 (SET.good_multicast_ ## SFX) + \ 8478 (SET.good_broadcast_ ## SFX)) 8479 8480 p_stats->rx_packets = MLXSW_SP_ROUTER_ALL_GOOD(ingress, packets); 8481 p_stats->tx_packets = MLXSW_SP_ROUTER_ALL_GOOD(egress, packets); 8482 p_stats->rx_bytes = MLXSW_SP_ROUTER_ALL_GOOD(ingress, bytes); 8483 p_stats->tx_bytes = MLXSW_SP_ROUTER_ALL_GOOD(egress, bytes); 8484 p_stats->rx_errors = ingress.error_packets; 8485 p_stats->tx_errors = egress.error_packets; 8486 p_stats->rx_dropped = ingress.discard_packets; 8487 p_stats->tx_dropped = egress.discard_packets; 8488 p_stats->multicast = ingress.good_multicast_packets + 8489 ingress.good_broadcast_packets; 8490 8491 #undef MLXSW_SP_ROUTER_ALL_GOOD 8492 8493 return 0; 8494 } 8495 8496 static int 8497 mlxsw_sp_router_port_l3_stats_report_delta(struct mlxsw_sp_rif *rif, 8498 struct netdev_notifier_offload_xstats_info *info) 8499 { 8500 struct rtnl_hw_stats64 stats = {}; 8501 int err; 8502 8503 if (!mlxsw_sp_router_port_l3_stats_enabled(rif)) 8504 return 0; 8505 8506 err = mlxsw_sp_router_port_l3_stats_fetch(rif, &stats); 8507 if (err) 8508 return err; 8509 8510 netdev_offload_xstats_report_delta(info->report_delta, &stats); 8511 return 0; 8512 } 8513 8514 struct mlxsw_sp_router_hwstats_notify_work { 8515 struct work_struct work; 8516 struct net_device *dev; 8517 netdevice_tracker dev_tracker; 8518 }; 8519 8520 static void mlxsw_sp_router_hwstats_notify_work(struct work_struct *work) 8521 { 8522 struct mlxsw_sp_router_hwstats_notify_work *hws_work = 8523 container_of(work, struct mlxsw_sp_router_hwstats_notify_work, 8524 work); 8525 8526 rtnl_lock(); 8527 rtnl_offload_xstats_notify(hws_work->dev); 8528 rtnl_unlock(); 8529 netdev_put(hws_work->dev, &hws_work->dev_tracker); 8530 kfree(hws_work); 8531 } 8532 8533 static void 8534 mlxsw_sp_router_hwstats_notify_schedule(struct net_device *dev) 8535 { 8536 struct mlxsw_sp_router_hwstats_notify_work *hws_work; 8537 8538 /* To collect notification payload, the core ends up sending another 8539 * notifier block message, which would deadlock on the attempt to 8540 * acquire the router lock again. Just postpone the notification until 8541 * later. 8542 */ 8543 8544 hws_work = kzalloc(sizeof(*hws_work), GFP_KERNEL); 8545 if (!hws_work) 8546 return; 8547 8548 INIT_WORK(&hws_work->work, mlxsw_sp_router_hwstats_notify_work); 8549 netdev_hold(dev, &hws_work->dev_tracker, GFP_KERNEL); 8550 hws_work->dev = dev; 8551 mlxsw_core_schedule_work(&hws_work->work); 8552 } 8553 8554 int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif) 8555 { 8556 return mlxsw_sp_rif_dev(rif)->ifindex; 8557 } 8558 8559 bool mlxsw_sp_rif_has_dev(const struct mlxsw_sp_rif *rif) 8560 { 8561 return !!mlxsw_sp_rif_dev(rif); 8562 } 8563 8564 bool mlxsw_sp_rif_dev_is(const struct mlxsw_sp_rif *rif, 8565 const struct net_device *dev) 8566 { 8567 return mlxsw_sp_rif_dev(rif) == dev; 8568 } 8569 8570 static void mlxsw_sp_rif_push_l3_stats(struct mlxsw_sp_rif *rif) 8571 { 8572 struct rtnl_hw_stats64 stats = {}; 8573 8574 if (!mlxsw_sp_router_port_l3_stats_fetch(rif, &stats)) 8575 netdev_offload_xstats_push_delta(mlxsw_sp_rif_dev(rif), 8576 NETDEV_OFFLOAD_XSTATS_TYPE_L3, 8577 &stats); 8578 } 8579 8580 static struct mlxsw_sp_rif * 8581 mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp, 8582 const struct mlxsw_sp_rif_params *params, 8583 struct netlink_ext_ack *extack) 8584 { 8585 u8 rif_entries = params->double_entry ? 2 : 1; 8586 u32 tb_id = l3mdev_fib_table(params->dev); 8587 const struct mlxsw_sp_rif_ops *ops; 8588 struct mlxsw_sp_fid *fid = NULL; 8589 enum mlxsw_sp_rif_type type; 8590 struct mlxsw_sp_crif *crif; 8591 struct mlxsw_sp_rif *rif; 8592 struct mlxsw_sp_vr *vr; 8593 u16 rif_index; 8594 int i, err; 8595 8596 type = mlxsw_sp_dev_rif_type(mlxsw_sp, params->dev); 8597 ops = mlxsw_sp->router->rif_ops_arr[type]; 8598 8599 vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN, extack); 8600 if (IS_ERR(vr)) 8601 return ERR_CAST(vr); 8602 vr->rif_count++; 8603 8604 err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index, rif_entries); 8605 if (err) { 8606 NL_SET_ERR_MSG_MOD(extack, "Exceeded number of supported router interfaces"); 8607 goto err_rif_index_alloc; 8608 } 8609 8610 crif = mlxsw_sp_crif_lookup(mlxsw_sp->router, params->dev); 8611 if (WARN_ON(!crif)) { 8612 err = -ENOENT; 8613 goto err_crif_lookup; 8614 } 8615 8616 rif = mlxsw_sp_rif_alloc(ops->rif_size, rif_index, vr->id, crif); 8617 if (!rif) { 8618 err = -ENOMEM; 8619 goto err_rif_alloc; 8620 } 8621 netdev_hold(params->dev, &rif->dev_tracker, GFP_KERNEL); 8622 mlxsw_sp->router->rifs[rif_index] = rif; 8623 rif->mlxsw_sp = mlxsw_sp; 8624 rif->ops = ops; 8625 rif->rif_entries = rif_entries; 8626 8627 if (ops->setup) 8628 ops->setup(rif, params); 8629 8630 if (ops->fid_get) { 8631 fid = ops->fid_get(rif, params, extack); 8632 if (IS_ERR(fid)) { 8633 err = PTR_ERR(fid); 8634 goto err_fid_get; 8635 } 8636 rif->fid = fid; 8637 } 8638 8639 err = ops->configure(rif, extack); 8640 if (err) 8641 goto err_configure; 8642 8643 for (i = 0; i < MLXSW_SP_L3_PROTO_MAX; i++) { 8644 err = mlxsw_sp_mr_rif_add(vr->mr_table[i], rif); 8645 if (err) 8646 goto err_mr_rif_add; 8647 } 8648 8649 err = mlxsw_sp_router_rif_made_sync(mlxsw_sp, rif); 8650 if (err) 8651 goto err_rif_made_sync; 8652 8653 if (netdev_offload_xstats_enabled(params->dev, 8654 NETDEV_OFFLOAD_XSTATS_TYPE_L3)) { 8655 err = mlxsw_sp_router_port_l3_stats_enable(rif); 8656 if (err) 8657 goto err_stats_enable; 8658 mlxsw_sp_router_hwstats_notify_schedule(params->dev); 8659 } else { 8660 mlxsw_sp_rif_counters_alloc(rif); 8661 } 8662 8663 atomic_add(rif_entries, &mlxsw_sp->router->rifs_count); 8664 return rif; 8665 8666 err_stats_enable: 8667 mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); 8668 err_rif_made_sync: 8669 err_mr_rif_add: 8670 for (i--; i >= 0; i--) 8671 mlxsw_sp_mr_rif_del(vr->mr_table[i], rif); 8672 ops->deconfigure(rif); 8673 err_configure: 8674 if (fid) 8675 mlxsw_sp_fid_put(fid); 8676 err_fid_get: 8677 mlxsw_sp->router->rifs[rif_index] = NULL; 8678 netdev_put(params->dev, &rif->dev_tracker); 8679 mlxsw_sp_rif_free(rif); 8680 err_rif_alloc: 8681 err_crif_lookup: 8682 mlxsw_sp_rif_index_free(mlxsw_sp, rif_index, rif_entries); 8683 err_rif_index_alloc: 8684 vr->rif_count--; 8685 mlxsw_sp_vr_put(mlxsw_sp, vr); 8686 return ERR_PTR(err); 8687 } 8688 8689 static void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif) 8690 { 8691 struct net_device *dev = mlxsw_sp_rif_dev(rif); 8692 const struct mlxsw_sp_rif_ops *ops = rif->ops; 8693 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 8694 struct mlxsw_sp_crif *crif = rif->crif; 8695 struct mlxsw_sp_fid *fid = rif->fid; 8696 u8 rif_entries = rif->rif_entries; 8697 u16 rif_index = rif->rif_index; 8698 struct mlxsw_sp_vr *vr; 8699 int i; 8700 8701 atomic_sub(rif_entries, &mlxsw_sp->router->rifs_count); 8702 mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); 8703 vr = &mlxsw_sp->router->vrs[rif->vr_id]; 8704 8705 if (netdev_offload_xstats_enabled(dev, NETDEV_OFFLOAD_XSTATS_TYPE_L3)) { 8706 mlxsw_sp_rif_push_l3_stats(rif); 8707 mlxsw_sp_router_port_l3_stats_disable(rif); 8708 mlxsw_sp_router_hwstats_notify_schedule(dev); 8709 } else { 8710 mlxsw_sp_rif_counters_free(rif); 8711 } 8712 8713 for (i = 0; i < MLXSW_SP_L3_PROTO_MAX; i++) 8714 mlxsw_sp_mr_rif_del(vr->mr_table[i], rif); 8715 ops->deconfigure(rif); 8716 if (fid) 8717 /* Loopback RIFs are not associated with a FID. */ 8718 mlxsw_sp_fid_put(fid); 8719 mlxsw_sp->router->rifs[rif->rif_index] = NULL; 8720 netdev_put(dev, &rif->dev_tracker); 8721 mlxsw_sp_rif_free(rif); 8722 mlxsw_sp_rif_index_free(mlxsw_sp, rif_index, rif_entries); 8723 vr->rif_count--; 8724 mlxsw_sp_vr_put(mlxsw_sp, vr); 8725 8726 if (crif->can_destroy) 8727 mlxsw_sp_crif_free(crif); 8728 } 8729 8730 void mlxsw_sp_rif_destroy_by_dev(struct mlxsw_sp *mlxsw_sp, 8731 struct net_device *dev) 8732 { 8733 struct mlxsw_sp_rif *rif; 8734 8735 mutex_lock(&mlxsw_sp->router->lock); 8736 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); 8737 if (!rif) 8738 goto out; 8739 mlxsw_sp_rif_destroy(rif); 8740 out: 8741 mutex_unlock(&mlxsw_sp->router->lock); 8742 } 8743 8744 static void mlxsw_sp_rif_destroy_vlan_upper(struct mlxsw_sp *mlxsw_sp, 8745 struct net_device *br_dev, 8746 u16 vid) 8747 { 8748 struct net_device *upper_dev; 8749 struct mlxsw_sp_crif *crif; 8750 8751 rcu_read_lock(); 8752 upper_dev = __vlan_find_dev_deep_rcu(br_dev, htons(ETH_P_8021Q), vid); 8753 rcu_read_unlock(); 8754 8755 if (!upper_dev) 8756 return; 8757 8758 crif = mlxsw_sp_crif_lookup(mlxsw_sp->router, upper_dev); 8759 if (!crif || !crif->rif) 8760 return; 8761 8762 mlxsw_sp_rif_destroy(crif->rif); 8763 } 8764 8765 static int mlxsw_sp_inetaddr_bridge_event(struct mlxsw_sp *mlxsw_sp, 8766 struct net_device *l3_dev, 8767 int lower_pvid, 8768 unsigned long event, 8769 struct netlink_ext_ack *extack); 8770 8771 int mlxsw_sp_router_bridge_vlan_add(struct mlxsw_sp *mlxsw_sp, 8772 struct net_device *br_dev, 8773 u16 new_vid, bool is_pvid, 8774 struct netlink_ext_ack *extack) 8775 { 8776 struct mlxsw_sp_rif *old_rif; 8777 struct mlxsw_sp_rif *new_rif; 8778 struct net_device *upper_dev; 8779 u16 old_pvid = 0; 8780 u16 new_pvid; 8781 int err = 0; 8782 8783 mutex_lock(&mlxsw_sp->router->lock); 8784 old_rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, br_dev); 8785 if (old_rif) { 8786 /* If the RIF on the bridge is not a VLAN RIF, we shouldn't have 8787 * gotten a PVID notification. 8788 */ 8789 if (WARN_ON(old_rif->ops->type != MLXSW_SP_RIF_TYPE_VLAN)) 8790 old_rif = NULL; 8791 else 8792 old_pvid = mlxsw_sp_fid_8021q_vid(old_rif->fid); 8793 } 8794 8795 if (is_pvid) 8796 new_pvid = new_vid; 8797 else if (old_pvid == new_vid) 8798 new_pvid = 0; 8799 else 8800 goto out; 8801 8802 if (old_pvid == new_pvid) 8803 goto out; 8804 8805 if (new_pvid) { 8806 struct mlxsw_sp_rif_params params = { 8807 .dev = br_dev, 8808 .vid = new_pvid, 8809 }; 8810 8811 /* If there is a VLAN upper with the same VID as the new PVID, 8812 * kill its RIF, if there is one. 8813 */ 8814 mlxsw_sp_rif_destroy_vlan_upper(mlxsw_sp, br_dev, new_pvid); 8815 8816 if (mlxsw_sp_dev_addr_list_empty(br_dev)) 8817 goto out; 8818 new_rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms, extack); 8819 if (IS_ERR(new_rif)) { 8820 err = PTR_ERR(new_rif); 8821 goto out; 8822 } 8823 8824 if (old_pvid) 8825 mlxsw_sp_rif_migrate_destroy(mlxsw_sp, old_rif, new_rif, 8826 true); 8827 } else { 8828 mlxsw_sp_rif_destroy(old_rif); 8829 } 8830 8831 if (old_pvid) { 8832 rcu_read_lock(); 8833 upper_dev = __vlan_find_dev_deep_rcu(br_dev, htons(ETH_P_8021Q), 8834 old_pvid); 8835 rcu_read_unlock(); 8836 if (upper_dev) 8837 err = mlxsw_sp_inetaddr_bridge_event(mlxsw_sp, 8838 upper_dev, 8839 new_pvid, 8840 NETDEV_UP, extack); 8841 } 8842 8843 out: 8844 mutex_unlock(&mlxsw_sp->router->lock); 8845 return err; 8846 } 8847 8848 static void 8849 mlxsw_sp_rif_subport_params_init(struct mlxsw_sp_rif_params *params, 8850 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) 8851 { 8852 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 8853 8854 params->vid = mlxsw_sp_port_vlan->vid; 8855 params->lag = mlxsw_sp_port->lagged; 8856 if (params->lag) 8857 params->lag_id = mlxsw_sp_port->lag_id; 8858 else 8859 params->system_port = mlxsw_sp_port->local_port; 8860 } 8861 8862 static struct mlxsw_sp_rif_subport * 8863 mlxsw_sp_rif_subport_rif(const struct mlxsw_sp_rif *rif) 8864 { 8865 return container_of(rif, struct mlxsw_sp_rif_subport, common); 8866 } 8867 8868 int mlxsw_sp_rif_subport_port(const struct mlxsw_sp_rif *rif, 8869 u16 *port, bool *is_lag) 8870 { 8871 struct mlxsw_sp_rif_subport *rif_subport; 8872 8873 if (WARN_ON(rif->ops->type != MLXSW_SP_RIF_TYPE_SUBPORT)) 8874 return -EINVAL; 8875 8876 rif_subport = mlxsw_sp_rif_subport_rif(rif); 8877 *is_lag = rif_subport->lag; 8878 *port = *is_lag ? rif_subport->lag_id : rif_subport->system_port; 8879 return 0; 8880 } 8881 8882 static struct mlxsw_sp_rif * 8883 mlxsw_sp_rif_subport_get(struct mlxsw_sp *mlxsw_sp, 8884 const struct mlxsw_sp_rif_params *params, 8885 struct netlink_ext_ack *extack) 8886 { 8887 struct mlxsw_sp_rif_subport *rif_subport; 8888 struct mlxsw_sp_rif *rif; 8889 8890 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, params->dev); 8891 if (!rif) 8892 return mlxsw_sp_rif_create(mlxsw_sp, params, extack); 8893 8894 rif_subport = mlxsw_sp_rif_subport_rif(rif); 8895 refcount_inc(&rif_subport->ref_count); 8896 return rif; 8897 } 8898 8899 static void mlxsw_sp_rif_subport_put(struct mlxsw_sp_rif *rif) 8900 { 8901 struct mlxsw_sp_rif_subport *rif_subport; 8902 8903 rif_subport = mlxsw_sp_rif_subport_rif(rif); 8904 if (!refcount_dec_and_test(&rif_subport->ref_count)) 8905 return; 8906 8907 mlxsw_sp_rif_destroy(rif); 8908 } 8909 8910 static int mlxsw_sp_rif_mac_profile_index_alloc(struct mlxsw_sp *mlxsw_sp, 8911 struct mlxsw_sp_rif_mac_profile *profile, 8912 struct netlink_ext_ack *extack) 8913 { 8914 u8 max_rif_mac_profiles = mlxsw_sp->router->max_rif_mac_profile; 8915 struct mlxsw_sp_router *router = mlxsw_sp->router; 8916 int id; 8917 8918 id = idr_alloc(&router->rif_mac_profiles_idr, profile, 0, 8919 max_rif_mac_profiles, GFP_KERNEL); 8920 8921 if (id >= 0) { 8922 profile->id = id; 8923 return 0; 8924 } 8925 8926 if (id == -ENOSPC) 8927 NL_SET_ERR_MSG_MOD(extack, 8928 "Exceeded number of supported router interface MAC profiles"); 8929 8930 return id; 8931 } 8932 8933 static struct mlxsw_sp_rif_mac_profile * 8934 mlxsw_sp_rif_mac_profile_index_free(struct mlxsw_sp *mlxsw_sp, u8 mac_profile) 8935 { 8936 struct mlxsw_sp_rif_mac_profile *profile; 8937 8938 profile = idr_remove(&mlxsw_sp->router->rif_mac_profiles_idr, 8939 mac_profile); 8940 WARN_ON(!profile); 8941 return profile; 8942 } 8943 8944 static struct mlxsw_sp_rif_mac_profile * 8945 mlxsw_sp_rif_mac_profile_alloc(const char *mac) 8946 { 8947 struct mlxsw_sp_rif_mac_profile *profile; 8948 8949 profile = kzalloc(sizeof(*profile), GFP_KERNEL); 8950 if (!profile) 8951 return NULL; 8952 8953 ether_addr_copy(profile->mac_prefix, mac); 8954 refcount_set(&profile->ref_count, 1); 8955 return profile; 8956 } 8957 8958 static struct mlxsw_sp_rif_mac_profile * 8959 mlxsw_sp_rif_mac_profile_find(const struct mlxsw_sp *mlxsw_sp, const char *mac) 8960 { 8961 struct mlxsw_sp_router *router = mlxsw_sp->router; 8962 struct mlxsw_sp_rif_mac_profile *profile; 8963 int id; 8964 8965 idr_for_each_entry(&router->rif_mac_profiles_idr, profile, id) { 8966 if (ether_addr_equal_masked(profile->mac_prefix, mac, 8967 mlxsw_sp->mac_mask)) 8968 return profile; 8969 } 8970 8971 return NULL; 8972 } 8973 8974 static u64 mlxsw_sp_rif_mac_profiles_occ_get(void *priv) 8975 { 8976 const struct mlxsw_sp *mlxsw_sp = priv; 8977 8978 return atomic_read(&mlxsw_sp->router->rif_mac_profiles_count); 8979 } 8980 8981 static u64 mlxsw_sp_rifs_occ_get(void *priv) 8982 { 8983 const struct mlxsw_sp *mlxsw_sp = priv; 8984 8985 return atomic_read(&mlxsw_sp->router->rifs_count); 8986 } 8987 8988 static struct mlxsw_sp_rif_mac_profile * 8989 mlxsw_sp_rif_mac_profile_create(struct mlxsw_sp *mlxsw_sp, const char *mac, 8990 struct netlink_ext_ack *extack) 8991 { 8992 struct mlxsw_sp_rif_mac_profile *profile; 8993 int err; 8994 8995 profile = mlxsw_sp_rif_mac_profile_alloc(mac); 8996 if (!profile) 8997 return ERR_PTR(-ENOMEM); 8998 8999 err = mlxsw_sp_rif_mac_profile_index_alloc(mlxsw_sp, profile, extack); 9000 if (err) 9001 goto profile_index_alloc_err; 9002 9003 atomic_inc(&mlxsw_sp->router->rif_mac_profiles_count); 9004 return profile; 9005 9006 profile_index_alloc_err: 9007 kfree(profile); 9008 return ERR_PTR(err); 9009 } 9010 9011 static void mlxsw_sp_rif_mac_profile_destroy(struct mlxsw_sp *mlxsw_sp, 9012 u8 mac_profile) 9013 { 9014 struct mlxsw_sp_rif_mac_profile *profile; 9015 9016 atomic_dec(&mlxsw_sp->router->rif_mac_profiles_count); 9017 profile = mlxsw_sp_rif_mac_profile_index_free(mlxsw_sp, mac_profile); 9018 kfree(profile); 9019 } 9020 9021 static int mlxsw_sp_rif_mac_profile_get(struct mlxsw_sp *mlxsw_sp, 9022 const char *mac, u8 *p_mac_profile, 9023 struct netlink_ext_ack *extack) 9024 { 9025 struct mlxsw_sp_rif_mac_profile *profile; 9026 9027 profile = mlxsw_sp_rif_mac_profile_find(mlxsw_sp, mac); 9028 if (profile) { 9029 refcount_inc(&profile->ref_count); 9030 goto out; 9031 } 9032 9033 profile = mlxsw_sp_rif_mac_profile_create(mlxsw_sp, mac, extack); 9034 if (IS_ERR(profile)) 9035 return PTR_ERR(profile); 9036 9037 out: 9038 *p_mac_profile = profile->id; 9039 return 0; 9040 } 9041 9042 static void mlxsw_sp_rif_mac_profile_put(struct mlxsw_sp *mlxsw_sp, 9043 u8 mac_profile) 9044 { 9045 struct mlxsw_sp_rif_mac_profile *profile; 9046 9047 profile = idr_find(&mlxsw_sp->router->rif_mac_profiles_idr, 9048 mac_profile); 9049 if (WARN_ON(!profile)) 9050 return; 9051 9052 if (!refcount_dec_and_test(&profile->ref_count)) 9053 return; 9054 9055 mlxsw_sp_rif_mac_profile_destroy(mlxsw_sp, mac_profile); 9056 } 9057 9058 static bool mlxsw_sp_rif_mac_profile_is_shared(const struct mlxsw_sp_rif *rif) 9059 { 9060 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 9061 struct mlxsw_sp_rif_mac_profile *profile; 9062 9063 profile = idr_find(&mlxsw_sp->router->rif_mac_profiles_idr, 9064 rif->mac_profile_id); 9065 if (WARN_ON(!profile)) 9066 return false; 9067 9068 return refcount_read(&profile->ref_count) > 1; 9069 } 9070 9071 static int mlxsw_sp_rif_mac_profile_edit(struct mlxsw_sp_rif *rif, 9072 const char *new_mac) 9073 { 9074 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 9075 struct mlxsw_sp_rif_mac_profile *profile; 9076 9077 profile = idr_find(&mlxsw_sp->router->rif_mac_profiles_idr, 9078 rif->mac_profile_id); 9079 if (WARN_ON(!profile)) 9080 return -EINVAL; 9081 9082 ether_addr_copy(profile->mac_prefix, new_mac); 9083 return 0; 9084 } 9085 9086 static int 9087 mlxsw_sp_rif_mac_profile_replace(struct mlxsw_sp *mlxsw_sp, 9088 struct mlxsw_sp_rif *rif, 9089 const char *new_mac, 9090 struct netlink_ext_ack *extack) 9091 { 9092 u8 mac_profile; 9093 int err; 9094 9095 if (!mlxsw_sp_rif_mac_profile_is_shared(rif) && 9096 !mlxsw_sp_rif_mac_profile_find(mlxsw_sp, new_mac)) 9097 return mlxsw_sp_rif_mac_profile_edit(rif, new_mac); 9098 9099 err = mlxsw_sp_rif_mac_profile_get(mlxsw_sp, new_mac, 9100 &mac_profile, extack); 9101 if (err) 9102 return err; 9103 9104 mlxsw_sp_rif_mac_profile_put(mlxsw_sp, rif->mac_profile_id); 9105 rif->mac_profile_id = mac_profile; 9106 return 0; 9107 } 9108 9109 static int 9110 __mlxsw_sp_port_vlan_router_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, 9111 struct net_device *l3_dev, 9112 struct netlink_ext_ack *extack) 9113 { 9114 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 9115 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; 9116 struct mlxsw_sp_rif_params params; 9117 u16 vid = mlxsw_sp_port_vlan->vid; 9118 struct mlxsw_sp_rif *rif; 9119 struct mlxsw_sp_fid *fid; 9120 int err; 9121 9122 params = (struct mlxsw_sp_rif_params) { 9123 .dev = l3_dev, 9124 .vid = vid, 9125 }; 9126 9127 mlxsw_sp_rif_subport_params_init(¶ms, mlxsw_sp_port_vlan); 9128 rif = mlxsw_sp_rif_subport_get(mlxsw_sp, ¶ms, extack); 9129 if (IS_ERR(rif)) 9130 return PTR_ERR(rif); 9131 9132 /* FID was already created, just take a reference */ 9133 fid = rif->ops->fid_get(rif, ¶ms, extack); 9134 err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid); 9135 if (err) 9136 goto err_fid_port_vid_map; 9137 9138 err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false); 9139 if (err) 9140 goto err_port_vid_learning_set; 9141 9142 err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, 9143 BR_STATE_FORWARDING); 9144 if (err) 9145 goto err_port_vid_stp_set; 9146 9147 mlxsw_sp_port_vlan->fid = fid; 9148 9149 return 0; 9150 9151 err_port_vid_stp_set: 9152 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); 9153 err_port_vid_learning_set: 9154 mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); 9155 err_fid_port_vid_map: 9156 mlxsw_sp_fid_put(fid); 9157 mlxsw_sp_rif_subport_put(rif); 9158 return err; 9159 } 9160 9161 static void 9162 __mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) 9163 { 9164 struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port; 9165 struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid; 9166 struct mlxsw_sp_rif *rif = mlxsw_sp_fid_rif(fid); 9167 u16 vid = mlxsw_sp_port_vlan->vid; 9168 9169 if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_RFID)) 9170 return; 9171 9172 mlxsw_sp_port_vlan->fid = NULL; 9173 mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING); 9174 mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true); 9175 mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid); 9176 mlxsw_sp_fid_put(fid); 9177 mlxsw_sp_rif_subport_put(rif); 9178 } 9179 9180 static int 9181 mlxsw_sp_port_vlan_router_join_existing(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan, 9182 struct net_device *l3_dev, 9183 struct netlink_ext_ack *extack) 9184 { 9185 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port_vlan->mlxsw_sp_port->mlxsw_sp; 9186 9187 lockdep_assert_held(&mlxsw_sp->router->lock); 9188 9189 if (!mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev)) 9190 return 0; 9191 9192 return __mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan, l3_dev, 9193 extack); 9194 } 9195 9196 void 9197 mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan) 9198 { 9199 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port_vlan->mlxsw_sp_port->mlxsw_sp; 9200 9201 mutex_lock(&mlxsw_sp->router->lock); 9202 __mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); 9203 mutex_unlock(&mlxsw_sp->router->lock); 9204 } 9205 9206 static int mlxsw_sp_inetaddr_port_vlan_event(struct net_device *l3_dev, 9207 struct net_device *port_dev, 9208 unsigned long event, u16 vid, 9209 struct netlink_ext_ack *extack) 9210 { 9211 struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); 9212 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 9213 9214 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid); 9215 if (WARN_ON(!mlxsw_sp_port_vlan)) 9216 return -EINVAL; 9217 9218 switch (event) { 9219 case NETDEV_UP: 9220 return __mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan, 9221 l3_dev, extack); 9222 case NETDEV_DOWN: 9223 __mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); 9224 break; 9225 } 9226 9227 return 0; 9228 } 9229 9230 static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, 9231 unsigned long event, bool nomaster, 9232 struct netlink_ext_ack *extack) 9233 { 9234 if (!nomaster && (netif_is_any_bridge_port(port_dev) || 9235 netif_is_lag_port(port_dev))) 9236 return 0; 9237 9238 return mlxsw_sp_inetaddr_port_vlan_event(port_dev, port_dev, event, 9239 MLXSW_SP_DEFAULT_VID, extack); 9240 } 9241 9242 static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, 9243 struct net_device *lag_dev, 9244 unsigned long event, u16 vid, 9245 struct netlink_ext_ack *extack) 9246 { 9247 struct net_device *port_dev; 9248 struct list_head *iter; 9249 int err; 9250 9251 netdev_for_each_lower_dev(lag_dev, port_dev, iter) { 9252 if (mlxsw_sp_port_dev_check(port_dev)) { 9253 err = mlxsw_sp_inetaddr_port_vlan_event(l3_dev, 9254 port_dev, 9255 event, vid, 9256 extack); 9257 if (err) 9258 return err; 9259 } 9260 } 9261 9262 return 0; 9263 } 9264 9265 static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, 9266 unsigned long event, bool nomaster, 9267 struct netlink_ext_ack *extack) 9268 { 9269 if (!nomaster && netif_is_bridge_port(lag_dev)) 9270 return 0; 9271 9272 return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 9273 MLXSW_SP_DEFAULT_VID, extack); 9274 } 9275 9276 static int mlxsw_sp_inetaddr_bridge_event(struct mlxsw_sp *mlxsw_sp, 9277 struct net_device *l3_dev, 9278 int lower_pvid, 9279 unsigned long event, 9280 struct netlink_ext_ack *extack) 9281 { 9282 struct mlxsw_sp_rif_params params = { 9283 .dev = l3_dev, 9284 }; 9285 struct mlxsw_sp_rif *rif; 9286 int err; 9287 9288 switch (event) { 9289 case NETDEV_UP: 9290 if (netif_is_bridge_master(l3_dev) && br_vlan_enabled(l3_dev)) { 9291 u16 proto; 9292 9293 br_vlan_get_proto(l3_dev, &proto); 9294 if (proto == ETH_P_8021AD) { 9295 NL_SET_ERR_MSG_MOD(extack, "Adding an IP address to 802.1ad bridge is not supported"); 9296 return -EOPNOTSUPP; 9297 } 9298 err = br_vlan_get_pvid(l3_dev, ¶ms.vid); 9299 if (err) 9300 return err; 9301 if (!params.vid) 9302 return 0; 9303 } else if (is_vlan_dev(l3_dev)) { 9304 params.vid = vlan_dev_vlan_id(l3_dev); 9305 9306 /* If the VID matches PVID of the bridge below, the 9307 * bridge owns the RIF for this VLAN. Don't do anything. 9308 */ 9309 if ((int)params.vid == lower_pvid) 9310 return 0; 9311 } 9312 9313 rif = mlxsw_sp_rif_create(mlxsw_sp, ¶ms, extack); 9314 if (IS_ERR(rif)) 9315 return PTR_ERR(rif); 9316 break; 9317 case NETDEV_DOWN: 9318 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); 9319 mlxsw_sp_rif_destroy(rif); 9320 break; 9321 } 9322 9323 return 0; 9324 } 9325 9326 static int mlxsw_sp_inetaddr_vlan_event(struct mlxsw_sp *mlxsw_sp, 9327 struct net_device *vlan_dev, 9328 unsigned long event, bool nomaster, 9329 struct netlink_ext_ack *extack) 9330 { 9331 struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); 9332 u16 vid = vlan_dev_vlan_id(vlan_dev); 9333 u16 lower_pvid; 9334 int err; 9335 9336 if (!nomaster && netif_is_bridge_port(vlan_dev)) 9337 return 0; 9338 9339 if (mlxsw_sp_port_dev_check(real_dev)) { 9340 return mlxsw_sp_inetaddr_port_vlan_event(vlan_dev, real_dev, 9341 event, vid, extack); 9342 } else if (netif_is_lag_master(real_dev)) { 9343 return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, 9344 vid, extack); 9345 } else if (netif_is_bridge_master(real_dev) && 9346 br_vlan_enabled(real_dev)) { 9347 err = br_vlan_get_pvid(real_dev, &lower_pvid); 9348 if (err) 9349 return err; 9350 return mlxsw_sp_inetaddr_bridge_event(mlxsw_sp, vlan_dev, 9351 lower_pvid, event, 9352 extack); 9353 } 9354 9355 return 0; 9356 } 9357 9358 static bool mlxsw_sp_rif_macvlan_is_vrrp4(const u8 *mac) 9359 { 9360 u8 vrrp4[ETH_ALEN] = { 0x00, 0x00, 0x5e, 0x00, 0x01, 0x00 }; 9361 u8 mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 }; 9362 9363 return ether_addr_equal_masked(mac, vrrp4, mask); 9364 } 9365 9366 static bool mlxsw_sp_rif_macvlan_is_vrrp6(const u8 *mac) 9367 { 9368 u8 vrrp6[ETH_ALEN] = { 0x00, 0x00, 0x5e, 0x00, 0x02, 0x00 }; 9369 u8 mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 }; 9370 9371 return ether_addr_equal_masked(mac, vrrp6, mask); 9372 } 9373 9374 static int mlxsw_sp_rif_vrrp_op(struct mlxsw_sp *mlxsw_sp, u16 rif_index, 9375 const u8 *mac, bool adding) 9376 { 9377 char ritr_pl[MLXSW_REG_RITR_LEN]; 9378 u8 vrrp_id = adding ? mac[5] : 0; 9379 int err; 9380 9381 if (!mlxsw_sp_rif_macvlan_is_vrrp4(mac) && 9382 !mlxsw_sp_rif_macvlan_is_vrrp6(mac)) 9383 return 0; 9384 9385 mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); 9386 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 9387 if (err) 9388 return err; 9389 9390 if (mlxsw_sp_rif_macvlan_is_vrrp4(mac)) 9391 mlxsw_reg_ritr_if_vrrp_id_ipv4_set(ritr_pl, vrrp_id); 9392 else 9393 mlxsw_reg_ritr_if_vrrp_id_ipv6_set(ritr_pl, vrrp_id); 9394 9395 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 9396 } 9397 9398 static int mlxsw_sp_rif_macvlan_add(struct mlxsw_sp *mlxsw_sp, 9399 const struct net_device *macvlan_dev, 9400 struct netlink_ext_ack *extack) 9401 { 9402 struct macvlan_dev *vlan = netdev_priv(macvlan_dev); 9403 struct mlxsw_sp_rif *rif; 9404 int err; 9405 9406 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, vlan->lowerdev); 9407 if (!rif) 9408 return 0; 9409 9410 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, macvlan_dev->dev_addr, 9411 mlxsw_sp_fid_index(rif->fid), true); 9412 if (err) 9413 return err; 9414 9415 err = mlxsw_sp_rif_vrrp_op(mlxsw_sp, rif->rif_index, 9416 macvlan_dev->dev_addr, true); 9417 if (err) 9418 goto err_rif_vrrp_add; 9419 9420 /* Make sure the bridge driver does not have this MAC pointing at 9421 * some other port. 9422 */ 9423 if (rif->ops->fdb_del) 9424 rif->ops->fdb_del(rif, macvlan_dev->dev_addr); 9425 9426 return 0; 9427 9428 err_rif_vrrp_add: 9429 mlxsw_sp_rif_fdb_op(mlxsw_sp, macvlan_dev->dev_addr, 9430 mlxsw_sp_fid_index(rif->fid), false); 9431 return err; 9432 } 9433 9434 static void __mlxsw_sp_rif_macvlan_del(struct mlxsw_sp *mlxsw_sp, 9435 const struct net_device *macvlan_dev) 9436 { 9437 struct macvlan_dev *vlan = netdev_priv(macvlan_dev); 9438 struct mlxsw_sp_rif *rif; 9439 9440 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, vlan->lowerdev); 9441 /* If we do not have a RIF, then we already took care of 9442 * removing the macvlan's MAC during RIF deletion. 9443 */ 9444 if (!rif) 9445 return; 9446 mlxsw_sp_rif_vrrp_op(mlxsw_sp, rif->rif_index, macvlan_dev->dev_addr, 9447 false); 9448 mlxsw_sp_rif_fdb_op(mlxsw_sp, macvlan_dev->dev_addr, 9449 mlxsw_sp_fid_index(rif->fid), false); 9450 } 9451 9452 void mlxsw_sp_rif_macvlan_del(struct mlxsw_sp *mlxsw_sp, 9453 const struct net_device *macvlan_dev) 9454 { 9455 mutex_lock(&mlxsw_sp->router->lock); 9456 __mlxsw_sp_rif_macvlan_del(mlxsw_sp, macvlan_dev); 9457 mutex_unlock(&mlxsw_sp->router->lock); 9458 } 9459 9460 static int mlxsw_sp_inetaddr_macvlan_event(struct mlxsw_sp *mlxsw_sp, 9461 struct net_device *macvlan_dev, 9462 unsigned long event, 9463 struct netlink_ext_ack *extack) 9464 { 9465 switch (event) { 9466 case NETDEV_UP: 9467 return mlxsw_sp_rif_macvlan_add(mlxsw_sp, macvlan_dev, extack); 9468 case NETDEV_DOWN: 9469 __mlxsw_sp_rif_macvlan_del(mlxsw_sp, macvlan_dev); 9470 break; 9471 } 9472 9473 return 0; 9474 } 9475 9476 static int __mlxsw_sp_inetaddr_event(struct mlxsw_sp *mlxsw_sp, 9477 struct net_device *dev, 9478 unsigned long event, bool nomaster, 9479 struct netlink_ext_ack *extack) 9480 { 9481 if (mlxsw_sp_port_dev_check(dev)) 9482 return mlxsw_sp_inetaddr_port_event(dev, event, nomaster, 9483 extack); 9484 else if (netif_is_lag_master(dev)) 9485 return mlxsw_sp_inetaddr_lag_event(dev, event, nomaster, 9486 extack); 9487 else if (netif_is_bridge_master(dev)) 9488 return mlxsw_sp_inetaddr_bridge_event(mlxsw_sp, dev, -1, event, 9489 extack); 9490 else if (is_vlan_dev(dev)) 9491 return mlxsw_sp_inetaddr_vlan_event(mlxsw_sp, dev, event, 9492 nomaster, extack); 9493 else if (netif_is_macvlan(dev)) 9494 return mlxsw_sp_inetaddr_macvlan_event(mlxsw_sp, dev, event, 9495 extack); 9496 else 9497 return 0; 9498 } 9499 9500 static int mlxsw_sp_inetaddr_event(struct notifier_block *nb, 9501 unsigned long event, void *ptr) 9502 { 9503 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; 9504 struct net_device *dev = ifa->ifa_dev->dev; 9505 struct mlxsw_sp_router *router; 9506 struct mlxsw_sp_rif *rif; 9507 int err = 0; 9508 9509 /* NETDEV_UP event is handled by mlxsw_sp_inetaddr_valid_event */ 9510 if (event == NETDEV_UP) 9511 return NOTIFY_DONE; 9512 9513 router = container_of(nb, struct mlxsw_sp_router, inetaddr_nb); 9514 mutex_lock(&router->lock); 9515 rif = mlxsw_sp_rif_find_by_dev(router->mlxsw_sp, dev); 9516 if (!mlxsw_sp_rif_should_config(rif, dev, event)) 9517 goto out; 9518 9519 err = __mlxsw_sp_inetaddr_event(router->mlxsw_sp, dev, event, false, 9520 NULL); 9521 out: 9522 mutex_unlock(&router->lock); 9523 return notifier_from_errno(err); 9524 } 9525 9526 static int mlxsw_sp_inetaddr_valid_event(struct notifier_block *unused, 9527 unsigned long event, void *ptr) 9528 { 9529 struct in_validator_info *ivi = (struct in_validator_info *) ptr; 9530 struct net_device *dev = ivi->ivi_dev->dev; 9531 struct mlxsw_sp *mlxsw_sp; 9532 struct mlxsw_sp_rif *rif; 9533 int err = 0; 9534 9535 mlxsw_sp = mlxsw_sp_lower_get(dev); 9536 if (!mlxsw_sp) 9537 return NOTIFY_DONE; 9538 9539 mutex_lock(&mlxsw_sp->router->lock); 9540 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); 9541 if (!mlxsw_sp_rif_should_config(rif, dev, event)) 9542 goto out; 9543 9544 err = __mlxsw_sp_inetaddr_event(mlxsw_sp, dev, event, false, 9545 ivi->extack); 9546 out: 9547 mutex_unlock(&mlxsw_sp->router->lock); 9548 return notifier_from_errno(err); 9549 } 9550 9551 struct mlxsw_sp_inet6addr_event_work { 9552 struct work_struct work; 9553 struct mlxsw_sp *mlxsw_sp; 9554 struct net_device *dev; 9555 netdevice_tracker dev_tracker; 9556 unsigned long event; 9557 }; 9558 9559 static void mlxsw_sp_inet6addr_event_work(struct work_struct *work) 9560 { 9561 struct mlxsw_sp_inet6addr_event_work *inet6addr_work = 9562 container_of(work, struct mlxsw_sp_inet6addr_event_work, work); 9563 struct mlxsw_sp *mlxsw_sp = inet6addr_work->mlxsw_sp; 9564 struct net_device *dev = inet6addr_work->dev; 9565 unsigned long event = inet6addr_work->event; 9566 struct mlxsw_sp_rif *rif; 9567 9568 rtnl_lock(); 9569 mutex_lock(&mlxsw_sp->router->lock); 9570 9571 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); 9572 if (!mlxsw_sp_rif_should_config(rif, dev, event)) 9573 goto out; 9574 9575 __mlxsw_sp_inetaddr_event(mlxsw_sp, dev, event, false, NULL); 9576 out: 9577 mutex_unlock(&mlxsw_sp->router->lock); 9578 rtnl_unlock(); 9579 netdev_put(dev, &inet6addr_work->dev_tracker); 9580 kfree(inet6addr_work); 9581 } 9582 9583 /* Called with rcu_read_lock() */ 9584 static int mlxsw_sp_inet6addr_event(struct notifier_block *nb, 9585 unsigned long event, void *ptr) 9586 { 9587 struct inet6_ifaddr *if6 = (struct inet6_ifaddr *) ptr; 9588 struct mlxsw_sp_inet6addr_event_work *inet6addr_work; 9589 struct net_device *dev = if6->idev->dev; 9590 struct mlxsw_sp_router *router; 9591 9592 /* NETDEV_UP event is handled by mlxsw_sp_inet6addr_valid_event */ 9593 if (event == NETDEV_UP) 9594 return NOTIFY_DONE; 9595 9596 inet6addr_work = kzalloc(sizeof(*inet6addr_work), GFP_ATOMIC); 9597 if (!inet6addr_work) 9598 return NOTIFY_BAD; 9599 9600 router = container_of(nb, struct mlxsw_sp_router, inet6addr_nb); 9601 INIT_WORK(&inet6addr_work->work, mlxsw_sp_inet6addr_event_work); 9602 inet6addr_work->mlxsw_sp = router->mlxsw_sp; 9603 inet6addr_work->dev = dev; 9604 inet6addr_work->event = event; 9605 netdev_hold(dev, &inet6addr_work->dev_tracker, GFP_ATOMIC); 9606 mlxsw_core_schedule_work(&inet6addr_work->work); 9607 9608 return NOTIFY_DONE; 9609 } 9610 9611 static int mlxsw_sp_inet6addr_valid_event(struct notifier_block *unused, 9612 unsigned long event, void *ptr) 9613 { 9614 struct in6_validator_info *i6vi = (struct in6_validator_info *) ptr; 9615 struct net_device *dev = i6vi->i6vi_dev->dev; 9616 struct mlxsw_sp *mlxsw_sp; 9617 struct mlxsw_sp_rif *rif; 9618 int err = 0; 9619 9620 mlxsw_sp = mlxsw_sp_lower_get(dev); 9621 if (!mlxsw_sp) 9622 return NOTIFY_DONE; 9623 9624 mutex_lock(&mlxsw_sp->router->lock); 9625 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); 9626 if (!mlxsw_sp_rif_should_config(rif, dev, event)) 9627 goto out; 9628 9629 err = __mlxsw_sp_inetaddr_event(mlxsw_sp, dev, event, false, 9630 i6vi->extack); 9631 out: 9632 mutex_unlock(&mlxsw_sp->router->lock); 9633 return notifier_from_errno(err); 9634 } 9635 9636 static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, 9637 const char *mac, int mtu, u8 mac_profile) 9638 { 9639 char ritr_pl[MLXSW_REG_RITR_LEN]; 9640 int err; 9641 9642 mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); 9643 err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 9644 if (err) 9645 return err; 9646 9647 mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); 9648 mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); 9649 mlxsw_reg_ritr_if_mac_profile_id_set(ritr_pl, mac_profile); 9650 mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); 9651 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 9652 } 9653 9654 static int 9655 mlxsw_sp_router_port_change_event(struct mlxsw_sp *mlxsw_sp, 9656 struct mlxsw_sp_rif *rif, 9657 struct netlink_ext_ack *extack) 9658 { 9659 struct net_device *dev = mlxsw_sp_rif_dev(rif); 9660 u8 old_mac_profile; 9661 u16 fid_index; 9662 int err; 9663 9664 fid_index = mlxsw_sp_fid_index(rif->fid); 9665 9666 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, false); 9667 if (err) 9668 return err; 9669 9670 old_mac_profile = rif->mac_profile_id; 9671 err = mlxsw_sp_rif_mac_profile_replace(mlxsw_sp, rif, dev->dev_addr, 9672 extack); 9673 if (err) 9674 goto err_rif_mac_profile_replace; 9675 9676 err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr, 9677 dev->mtu, rif->mac_profile_id); 9678 if (err) 9679 goto err_rif_edit; 9680 9681 err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, fid_index, true); 9682 if (err) 9683 goto err_rif_fdb_op; 9684 9685 if (rif->mtu != dev->mtu) { 9686 struct mlxsw_sp_vr *vr; 9687 int i; 9688 9689 /* The RIF is relevant only to its mr_table instance, as unlike 9690 * unicast routing, in multicast routing a RIF cannot be shared 9691 * between several multicast routing tables. 9692 */ 9693 vr = &mlxsw_sp->router->vrs[rif->vr_id]; 9694 for (i = 0; i < MLXSW_SP_L3_PROTO_MAX; i++) 9695 mlxsw_sp_mr_rif_mtu_update(vr->mr_table[i], 9696 rif, dev->mtu); 9697 } 9698 9699 ether_addr_copy(rif->addr, dev->dev_addr); 9700 rif->mtu = dev->mtu; 9701 9702 netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index); 9703 9704 return 0; 9705 9706 err_rif_fdb_op: 9707 mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu, 9708 old_mac_profile); 9709 err_rif_edit: 9710 mlxsw_sp_rif_mac_profile_replace(mlxsw_sp, rif, rif->addr, extack); 9711 err_rif_mac_profile_replace: 9712 mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, true); 9713 return err; 9714 } 9715 9716 static int mlxsw_sp_router_port_pre_changeaddr_event(struct mlxsw_sp_rif *rif, 9717 struct netdev_notifier_pre_changeaddr_info *info) 9718 { 9719 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 9720 struct mlxsw_sp_rif_mac_profile *profile; 9721 struct netlink_ext_ack *extack; 9722 u8 max_rif_mac_profiles; 9723 u64 occ; 9724 9725 extack = netdev_notifier_info_to_extack(&info->info); 9726 9727 profile = mlxsw_sp_rif_mac_profile_find(mlxsw_sp, info->dev_addr); 9728 if (profile) 9729 return 0; 9730 9731 max_rif_mac_profiles = mlxsw_sp->router->max_rif_mac_profile; 9732 occ = mlxsw_sp_rif_mac_profiles_occ_get(mlxsw_sp); 9733 if (occ < max_rif_mac_profiles) 9734 return 0; 9735 9736 if (!mlxsw_sp_rif_mac_profile_is_shared(rif)) 9737 return 0; 9738 9739 NL_SET_ERR_MSG_MOD(extack, "Exceeded number of supported router interface MAC profiles"); 9740 return -ENOBUFS; 9741 } 9742 9743 static bool mlxsw_sp_router_netdevice_interesting(struct mlxsw_sp *mlxsw_sp, 9744 struct net_device *dev) 9745 { 9746 struct vlan_dev_priv *vlan; 9747 9748 if (netif_is_lag_master(dev) || 9749 netif_is_bridge_master(dev) || 9750 mlxsw_sp_port_dev_check(dev) || 9751 mlxsw_sp_netdev_is_ipip_ol(mlxsw_sp, dev) || 9752 netif_is_l3_master(dev)) 9753 return true; 9754 9755 if (!is_vlan_dev(dev)) 9756 return false; 9757 9758 vlan = vlan_dev_priv(dev); 9759 return netif_is_lag_master(vlan->real_dev) || 9760 netif_is_bridge_master(vlan->real_dev) || 9761 mlxsw_sp_port_dev_check(vlan->real_dev); 9762 } 9763 9764 static struct mlxsw_sp_crif * 9765 mlxsw_sp_crif_register(struct mlxsw_sp_router *router, struct net_device *dev) 9766 { 9767 struct mlxsw_sp_crif *crif; 9768 int err; 9769 9770 if (WARN_ON(mlxsw_sp_crif_lookup(router, dev))) 9771 return NULL; 9772 9773 crif = mlxsw_sp_crif_alloc(dev); 9774 if (!crif) 9775 return ERR_PTR(-ENOMEM); 9776 9777 err = mlxsw_sp_crif_insert(router, crif); 9778 if (err) 9779 goto err_netdev_insert; 9780 9781 return crif; 9782 9783 err_netdev_insert: 9784 mlxsw_sp_crif_free(crif); 9785 return ERR_PTR(err); 9786 } 9787 9788 static void mlxsw_sp_crif_unregister(struct mlxsw_sp_router *router, 9789 struct mlxsw_sp_crif *crif) 9790 { 9791 struct mlxsw_sp_nexthop *nh, *tmp; 9792 9793 mlxsw_sp_crif_remove(router, crif); 9794 9795 list_for_each_entry_safe(nh, tmp, &crif->nexthop_list, crif_list_node) 9796 mlxsw_sp_nexthop_type_fini(router->mlxsw_sp, nh); 9797 9798 if (crif->rif) 9799 crif->can_destroy = true; 9800 else 9801 mlxsw_sp_crif_free(crif); 9802 } 9803 9804 static int mlxsw_sp_netdevice_register(struct mlxsw_sp_router *router, 9805 struct net_device *dev) 9806 { 9807 struct mlxsw_sp_crif *crif; 9808 9809 if (!mlxsw_sp_router_netdevice_interesting(router->mlxsw_sp, dev)) 9810 return 0; 9811 9812 crif = mlxsw_sp_crif_register(router, dev); 9813 return PTR_ERR_OR_ZERO(crif); 9814 } 9815 9816 static void mlxsw_sp_netdevice_unregister(struct mlxsw_sp_router *router, 9817 struct net_device *dev) 9818 { 9819 struct mlxsw_sp_crif *crif; 9820 9821 if (!mlxsw_sp_router_netdevice_interesting(router->mlxsw_sp, dev)) 9822 return; 9823 9824 /* netdev_run_todo(), by way of netdev_wait_allrefs_any(), rebroadcasts 9825 * the NETDEV_UNREGISTER message, so we can get here twice. If that's 9826 * what happened, the netdevice state is NETREG_UNREGISTERED. In that 9827 * case, we expect to have collected the CRIF already, and warn if it 9828 * still exists. Otherwise we expect the CRIF to exist. 9829 */ 9830 crif = mlxsw_sp_crif_lookup(router, dev); 9831 if (dev->reg_state == NETREG_UNREGISTERED) { 9832 if (!WARN_ON(crif)) 9833 return; 9834 } 9835 if (WARN_ON(!crif)) 9836 return; 9837 9838 mlxsw_sp_crif_unregister(router, crif); 9839 } 9840 9841 static bool mlxsw_sp_is_offload_xstats_event(unsigned long event) 9842 { 9843 switch (event) { 9844 case NETDEV_OFFLOAD_XSTATS_ENABLE: 9845 case NETDEV_OFFLOAD_XSTATS_DISABLE: 9846 case NETDEV_OFFLOAD_XSTATS_REPORT_USED: 9847 case NETDEV_OFFLOAD_XSTATS_REPORT_DELTA: 9848 return true; 9849 } 9850 9851 return false; 9852 } 9853 9854 static int 9855 mlxsw_sp_router_port_offload_xstats_cmd(struct mlxsw_sp_rif *rif, 9856 unsigned long event, 9857 struct netdev_notifier_offload_xstats_info *info) 9858 { 9859 switch (info->type) { 9860 case NETDEV_OFFLOAD_XSTATS_TYPE_L3: 9861 break; 9862 default: 9863 return 0; 9864 } 9865 9866 switch (event) { 9867 case NETDEV_OFFLOAD_XSTATS_ENABLE: 9868 return mlxsw_sp_router_port_l3_stats_enable(rif); 9869 case NETDEV_OFFLOAD_XSTATS_DISABLE: 9870 mlxsw_sp_router_port_l3_stats_disable(rif); 9871 return 0; 9872 case NETDEV_OFFLOAD_XSTATS_REPORT_USED: 9873 mlxsw_sp_router_port_l3_stats_report_used(rif, info); 9874 return 0; 9875 case NETDEV_OFFLOAD_XSTATS_REPORT_DELTA: 9876 return mlxsw_sp_router_port_l3_stats_report_delta(rif, info); 9877 } 9878 9879 WARN_ON_ONCE(1); 9880 return 0; 9881 } 9882 9883 static int 9884 mlxsw_sp_netdevice_offload_xstats_cmd(struct mlxsw_sp *mlxsw_sp, 9885 struct net_device *dev, 9886 unsigned long event, 9887 struct netdev_notifier_offload_xstats_info *info) 9888 { 9889 struct mlxsw_sp_rif *rif; 9890 9891 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); 9892 if (!rif) 9893 return 0; 9894 9895 return mlxsw_sp_router_port_offload_xstats_cmd(rif, event, info); 9896 } 9897 9898 static bool mlxsw_sp_is_router_event(unsigned long event) 9899 { 9900 switch (event) { 9901 case NETDEV_PRE_CHANGEADDR: 9902 case NETDEV_CHANGEADDR: 9903 case NETDEV_CHANGEMTU: 9904 return true; 9905 default: 9906 return false; 9907 } 9908 } 9909 9910 static int mlxsw_sp_netdevice_router_port_event(struct net_device *dev, 9911 unsigned long event, void *ptr) 9912 { 9913 struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr); 9914 struct mlxsw_sp *mlxsw_sp; 9915 struct mlxsw_sp_rif *rif; 9916 9917 mlxsw_sp = mlxsw_sp_lower_get(dev); 9918 if (!mlxsw_sp) 9919 return 0; 9920 9921 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); 9922 if (!rif) 9923 return 0; 9924 9925 switch (event) { 9926 case NETDEV_CHANGEMTU: 9927 case NETDEV_CHANGEADDR: 9928 return mlxsw_sp_router_port_change_event(mlxsw_sp, rif, extack); 9929 case NETDEV_PRE_CHANGEADDR: 9930 return mlxsw_sp_router_port_pre_changeaddr_event(rif, ptr); 9931 default: 9932 WARN_ON_ONCE(1); 9933 break; 9934 } 9935 9936 return 0; 9937 } 9938 9939 static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp, 9940 struct net_device *l3_dev, 9941 struct netlink_ext_ack *extack) 9942 { 9943 struct mlxsw_sp_rif *rif; 9944 9945 /* If netdev is already associated with a RIF, then we need to 9946 * destroy it and create a new one with the new virtual router ID. 9947 */ 9948 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); 9949 if (rif) 9950 __mlxsw_sp_inetaddr_event(mlxsw_sp, l3_dev, NETDEV_DOWN, false, 9951 extack); 9952 9953 return __mlxsw_sp_inetaddr_event(mlxsw_sp, l3_dev, NETDEV_UP, false, 9954 extack); 9955 } 9956 9957 static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp, 9958 struct net_device *l3_dev) 9959 { 9960 struct mlxsw_sp_rif *rif; 9961 9962 rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); 9963 if (!rif) 9964 return; 9965 __mlxsw_sp_inetaddr_event(mlxsw_sp, l3_dev, NETDEV_DOWN, false, NULL); 9966 } 9967 9968 static bool mlxsw_sp_is_vrf_event(unsigned long event, void *ptr) 9969 { 9970 struct netdev_notifier_changeupper_info *info = ptr; 9971 9972 if (event != NETDEV_PRECHANGEUPPER && event != NETDEV_CHANGEUPPER) 9973 return false; 9974 return netif_is_l3_master(info->upper_dev); 9975 } 9976 9977 static int 9978 mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event, 9979 struct netdev_notifier_changeupper_info *info) 9980 { 9981 struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); 9982 int err = 0; 9983 9984 /* We do not create a RIF for a macvlan, but only use it to 9985 * direct more MAC addresses to the router. 9986 */ 9987 if (!mlxsw_sp || netif_is_macvlan(l3_dev)) 9988 return 0; 9989 9990 switch (event) { 9991 case NETDEV_PRECHANGEUPPER: 9992 break; 9993 case NETDEV_CHANGEUPPER: 9994 if (info->linking) { 9995 struct netlink_ext_ack *extack; 9996 9997 extack = netdev_notifier_info_to_extack(&info->info); 9998 err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev, extack); 9999 } else { 10000 mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev); 10001 } 10002 break; 10003 } 10004 10005 return err; 10006 } 10007 10008 struct mlxsw_sp_router_replay_inetaddr_up { 10009 struct mlxsw_sp *mlxsw_sp; 10010 struct netlink_ext_ack *extack; 10011 unsigned int done; 10012 bool deslavement; 10013 }; 10014 10015 static int mlxsw_sp_router_replay_inetaddr_up(struct net_device *dev, 10016 struct netdev_nested_priv *priv) 10017 { 10018 struct mlxsw_sp_router_replay_inetaddr_up *ctx = priv->data; 10019 bool nomaster = ctx->deslavement; 10020 struct mlxsw_sp_crif *crif; 10021 int err; 10022 10023 if (mlxsw_sp_dev_addr_list_empty(dev)) 10024 return 0; 10025 10026 crif = mlxsw_sp_crif_lookup(ctx->mlxsw_sp->router, dev); 10027 if (!crif || crif->rif) 10028 return 0; 10029 10030 if (!mlxsw_sp_rif_should_config(crif->rif, dev, NETDEV_UP)) 10031 return 0; 10032 10033 err = __mlxsw_sp_inetaddr_event(ctx->mlxsw_sp, dev, NETDEV_UP, 10034 nomaster, ctx->extack); 10035 if (err) 10036 return err; 10037 10038 ctx->done++; 10039 return 0; 10040 } 10041 10042 static int mlxsw_sp_router_unreplay_inetaddr_up(struct net_device *dev, 10043 struct netdev_nested_priv *priv) 10044 { 10045 struct mlxsw_sp_router_replay_inetaddr_up *ctx = priv->data; 10046 bool nomaster = ctx->deslavement; 10047 struct mlxsw_sp_crif *crif; 10048 10049 if (!ctx->done) 10050 return 0; 10051 10052 if (mlxsw_sp_dev_addr_list_empty(dev)) 10053 return 0; 10054 10055 crif = mlxsw_sp_crif_lookup(ctx->mlxsw_sp->router, dev); 10056 if (!crif || !crif->rif) 10057 return 0; 10058 10059 /* We are rolling back NETDEV_UP, so ask for that. */ 10060 if (!mlxsw_sp_rif_should_config(crif->rif, dev, NETDEV_UP)) 10061 return 0; 10062 10063 __mlxsw_sp_inetaddr_event(ctx->mlxsw_sp, dev, NETDEV_DOWN, nomaster, 10064 NULL); 10065 10066 ctx->done--; 10067 return 0; 10068 } 10069 10070 int mlxsw_sp_netdevice_enslavement_replay(struct mlxsw_sp *mlxsw_sp, 10071 struct net_device *upper_dev, 10072 struct netlink_ext_ack *extack) 10073 { 10074 struct mlxsw_sp_router_replay_inetaddr_up ctx = { 10075 .mlxsw_sp = mlxsw_sp, 10076 .extack = extack, 10077 .deslavement = false, 10078 }; 10079 struct netdev_nested_priv priv = { 10080 .data = &ctx, 10081 }; 10082 int err; 10083 10084 err = mlxsw_sp_router_replay_inetaddr_up(upper_dev, &priv); 10085 if (err) 10086 return err; 10087 10088 err = netdev_walk_all_upper_dev_rcu(upper_dev, 10089 mlxsw_sp_router_replay_inetaddr_up, 10090 &priv); 10091 if (err) 10092 goto err_replay_up; 10093 10094 return 0; 10095 10096 err_replay_up: 10097 netdev_walk_all_upper_dev_rcu(upper_dev, 10098 mlxsw_sp_router_unreplay_inetaddr_up, 10099 &priv); 10100 mlxsw_sp_router_unreplay_inetaddr_up(upper_dev, &priv); 10101 return err; 10102 } 10103 10104 void mlxsw_sp_netdevice_deslavement_replay(struct mlxsw_sp *mlxsw_sp, 10105 struct net_device *dev) 10106 { 10107 struct mlxsw_sp_router_replay_inetaddr_up ctx = { 10108 .mlxsw_sp = mlxsw_sp, 10109 .deslavement = true, 10110 }; 10111 struct netdev_nested_priv priv = { 10112 .data = &ctx, 10113 }; 10114 10115 mlxsw_sp_router_replay_inetaddr_up(dev, &priv); 10116 } 10117 10118 static int 10119 mlxsw_sp_port_vid_router_join_existing(struct mlxsw_sp_port *mlxsw_sp_port, 10120 u16 vid, struct net_device *dev, 10121 struct netlink_ext_ack *extack) 10122 { 10123 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 10124 10125 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 10126 vid); 10127 if (WARN_ON(!mlxsw_sp_port_vlan)) 10128 return -EINVAL; 10129 10130 return mlxsw_sp_port_vlan_router_join_existing(mlxsw_sp_port_vlan, 10131 dev, extack); 10132 } 10133 10134 static void 10135 mlxsw_sp_port_vid_router_leave(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid, 10136 struct net_device *dev) 10137 { 10138 struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan; 10139 10140 mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 10141 vid); 10142 if (WARN_ON(!mlxsw_sp_port_vlan)) 10143 return; 10144 10145 __mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan); 10146 } 10147 10148 static int __mlxsw_sp_router_port_join_lag(struct mlxsw_sp_port *mlxsw_sp_port, 10149 struct net_device *lag_dev, 10150 struct netlink_ext_ack *extack) 10151 { 10152 u16 default_vid = MLXSW_SP_DEFAULT_VID; 10153 struct net_device *upper_dev; 10154 struct list_head *iter; 10155 int done = 0; 10156 u16 vid; 10157 int err; 10158 10159 err = mlxsw_sp_port_vid_router_join_existing(mlxsw_sp_port, default_vid, 10160 lag_dev, extack); 10161 if (err) 10162 return err; 10163 10164 netdev_for_each_upper_dev_rcu(lag_dev, upper_dev, iter) { 10165 if (!is_vlan_dev(upper_dev)) 10166 continue; 10167 10168 vid = vlan_dev_vlan_id(upper_dev); 10169 err = mlxsw_sp_port_vid_router_join_existing(mlxsw_sp_port, vid, 10170 upper_dev, extack); 10171 if (err) 10172 goto err_router_join_dev; 10173 10174 ++done; 10175 } 10176 10177 return 0; 10178 10179 err_router_join_dev: 10180 netdev_for_each_upper_dev_rcu(lag_dev, upper_dev, iter) { 10181 if (!is_vlan_dev(upper_dev)) 10182 continue; 10183 if (!done--) 10184 break; 10185 10186 vid = vlan_dev_vlan_id(upper_dev); 10187 mlxsw_sp_port_vid_router_leave(mlxsw_sp_port, vid, upper_dev); 10188 } 10189 10190 mlxsw_sp_port_vid_router_leave(mlxsw_sp_port, default_vid, lag_dev); 10191 return err; 10192 } 10193 10194 static void 10195 __mlxsw_sp_router_port_leave_lag(struct mlxsw_sp_port *mlxsw_sp_port, 10196 struct net_device *lag_dev) 10197 { 10198 u16 default_vid = MLXSW_SP_DEFAULT_VID; 10199 struct net_device *upper_dev; 10200 struct list_head *iter; 10201 u16 vid; 10202 10203 netdev_for_each_upper_dev_rcu(lag_dev, upper_dev, iter) { 10204 if (!is_vlan_dev(upper_dev)) 10205 continue; 10206 10207 vid = vlan_dev_vlan_id(upper_dev); 10208 mlxsw_sp_port_vid_router_leave(mlxsw_sp_port, vid, upper_dev); 10209 } 10210 10211 mlxsw_sp_port_vid_router_leave(mlxsw_sp_port, default_vid, lag_dev); 10212 } 10213 10214 int mlxsw_sp_router_port_join_lag(struct mlxsw_sp_port *mlxsw_sp_port, 10215 struct net_device *lag_dev, 10216 struct netlink_ext_ack *extack) 10217 { 10218 int err; 10219 10220 mutex_lock(&mlxsw_sp_port->mlxsw_sp->router->lock); 10221 err = __mlxsw_sp_router_port_join_lag(mlxsw_sp_port, lag_dev, extack); 10222 mutex_unlock(&mlxsw_sp_port->mlxsw_sp->router->lock); 10223 10224 return err; 10225 } 10226 10227 void mlxsw_sp_router_port_leave_lag(struct mlxsw_sp_port *mlxsw_sp_port, 10228 struct net_device *lag_dev) 10229 { 10230 mutex_lock(&mlxsw_sp_port->mlxsw_sp->router->lock); 10231 __mlxsw_sp_router_port_leave_lag(mlxsw_sp_port, lag_dev); 10232 mutex_unlock(&mlxsw_sp_port->mlxsw_sp->router->lock); 10233 } 10234 10235 static int mlxsw_sp_router_netdevice_event(struct notifier_block *nb, 10236 unsigned long event, void *ptr) 10237 { 10238 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 10239 struct mlxsw_sp_router *router; 10240 struct mlxsw_sp *mlxsw_sp; 10241 int err = 0; 10242 10243 router = container_of(nb, struct mlxsw_sp_router, netdevice_nb); 10244 mlxsw_sp = router->mlxsw_sp; 10245 10246 mutex_lock(&mlxsw_sp->router->lock); 10247 10248 if (event == NETDEV_REGISTER) { 10249 err = mlxsw_sp_netdevice_register(router, dev); 10250 if (err) 10251 /* No need to roll this back, UNREGISTER will collect it 10252 * anyhow. 10253 */ 10254 goto out; 10255 } 10256 10257 if (mlxsw_sp_is_offload_xstats_event(event)) 10258 err = mlxsw_sp_netdevice_offload_xstats_cmd(mlxsw_sp, dev, 10259 event, ptr); 10260 else if (mlxsw_sp_netdev_is_ipip_ol(mlxsw_sp, dev)) 10261 err = mlxsw_sp_netdevice_ipip_ol_event(mlxsw_sp, dev, 10262 event, ptr); 10263 else if (mlxsw_sp_netdev_is_ipip_ul(mlxsw_sp, dev)) 10264 err = mlxsw_sp_netdevice_ipip_ul_event(mlxsw_sp, dev, 10265 event, ptr); 10266 else if (mlxsw_sp_is_router_event(event)) 10267 err = mlxsw_sp_netdevice_router_port_event(dev, event, ptr); 10268 else if (mlxsw_sp_is_vrf_event(event, ptr)) 10269 err = mlxsw_sp_netdevice_vrf_event(dev, event, ptr); 10270 10271 if (event == NETDEV_UNREGISTER) 10272 mlxsw_sp_netdevice_unregister(router, dev); 10273 10274 out: 10275 mutex_unlock(&mlxsw_sp->router->lock); 10276 10277 return notifier_from_errno(err); 10278 } 10279 10280 struct mlxsw_sp_macvlan_replay { 10281 struct mlxsw_sp *mlxsw_sp; 10282 struct netlink_ext_ack *extack; 10283 }; 10284 10285 static int mlxsw_sp_macvlan_replay_upper(struct net_device *dev, 10286 struct netdev_nested_priv *priv) 10287 { 10288 const struct mlxsw_sp_macvlan_replay *rms = priv->data; 10289 struct netlink_ext_ack *extack = rms->extack; 10290 struct mlxsw_sp *mlxsw_sp = rms->mlxsw_sp; 10291 10292 if (!netif_is_macvlan(dev)) 10293 return 0; 10294 10295 return mlxsw_sp_rif_macvlan_add(mlxsw_sp, dev, extack); 10296 } 10297 10298 static int mlxsw_sp_macvlan_replay(struct mlxsw_sp_rif *rif, 10299 struct netlink_ext_ack *extack) 10300 { 10301 struct mlxsw_sp_macvlan_replay rms = { 10302 .mlxsw_sp = rif->mlxsw_sp, 10303 .extack = extack, 10304 }; 10305 struct netdev_nested_priv priv = { 10306 .data = &rms, 10307 }; 10308 10309 return netdev_walk_all_upper_dev_rcu(mlxsw_sp_rif_dev(rif), 10310 mlxsw_sp_macvlan_replay_upper, 10311 &priv); 10312 } 10313 10314 static int __mlxsw_sp_rif_macvlan_flush(struct net_device *dev, 10315 struct netdev_nested_priv *priv) 10316 { 10317 struct mlxsw_sp_rif *rif = (struct mlxsw_sp_rif *)priv->data; 10318 10319 if (!netif_is_macvlan(dev)) 10320 return 0; 10321 10322 return mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10323 mlxsw_sp_fid_index(rif->fid), false); 10324 } 10325 10326 static int mlxsw_sp_rif_macvlan_flush(struct mlxsw_sp_rif *rif) 10327 { 10328 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10329 struct netdev_nested_priv priv = { 10330 .data = (void *)rif, 10331 }; 10332 10333 if (!netif_is_macvlan_port(dev)) 10334 return 0; 10335 10336 return netdev_walk_all_upper_dev_rcu(dev, 10337 __mlxsw_sp_rif_macvlan_flush, &priv); 10338 } 10339 10340 static void mlxsw_sp_rif_subport_setup(struct mlxsw_sp_rif *rif, 10341 const struct mlxsw_sp_rif_params *params) 10342 { 10343 struct mlxsw_sp_rif_subport *rif_subport; 10344 10345 rif_subport = mlxsw_sp_rif_subport_rif(rif); 10346 refcount_set(&rif_subport->ref_count, 1); 10347 rif_subport->vid = params->vid; 10348 rif_subport->lag = params->lag; 10349 if (params->lag) 10350 rif_subport->lag_id = params->lag_id; 10351 else 10352 rif_subport->system_port = params->system_port; 10353 } 10354 10355 static int mlxsw_sp_rif_subport_op(struct mlxsw_sp_rif *rif, bool enable) 10356 { 10357 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10358 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10359 struct mlxsw_sp_rif_subport *rif_subport; 10360 char ritr_pl[MLXSW_REG_RITR_LEN]; 10361 u16 efid; 10362 10363 rif_subport = mlxsw_sp_rif_subport_rif(rif); 10364 mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_SP_IF, 10365 rif->rif_index, rif->vr_id, dev->mtu); 10366 mlxsw_reg_ritr_mac_pack(ritr_pl, dev->dev_addr); 10367 mlxsw_reg_ritr_if_mac_profile_id_set(ritr_pl, rif->mac_profile_id); 10368 efid = mlxsw_sp_fid_index(rif->fid); 10369 mlxsw_reg_ritr_sp_if_pack(ritr_pl, rif_subport->lag, 10370 rif_subport->lag ? rif_subport->lag_id : 10371 rif_subport->system_port, 10372 efid, 0); 10373 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 10374 } 10375 10376 static int mlxsw_sp_rif_subport_configure(struct mlxsw_sp_rif *rif, 10377 struct netlink_ext_ack *extack) 10378 { 10379 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10380 u8 mac_profile; 10381 int err; 10382 10383 err = mlxsw_sp_rif_mac_profile_get(rif->mlxsw_sp, rif->addr, 10384 &mac_profile, extack); 10385 if (err) 10386 return err; 10387 rif->mac_profile_id = mac_profile; 10388 10389 err = mlxsw_sp_rif_subport_op(rif, true); 10390 if (err) 10391 goto err_rif_subport_op; 10392 10393 err = mlxsw_sp_macvlan_replay(rif, extack); 10394 if (err) 10395 goto err_macvlan_replay; 10396 10397 err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10398 mlxsw_sp_fid_index(rif->fid), true); 10399 if (err) 10400 goto err_rif_fdb_op; 10401 10402 err = mlxsw_sp_fid_rif_set(rif->fid, rif); 10403 if (err) 10404 goto err_fid_rif_set; 10405 10406 return 0; 10407 10408 err_fid_rif_set: 10409 mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10410 mlxsw_sp_fid_index(rif->fid), false); 10411 err_rif_fdb_op: 10412 mlxsw_sp_rif_macvlan_flush(rif); 10413 err_macvlan_replay: 10414 mlxsw_sp_rif_subport_op(rif, false); 10415 err_rif_subport_op: 10416 mlxsw_sp_rif_mac_profile_put(rif->mlxsw_sp, mac_profile); 10417 return err; 10418 } 10419 10420 static void mlxsw_sp_rif_subport_deconfigure(struct mlxsw_sp_rif *rif) 10421 { 10422 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10423 struct mlxsw_sp_fid *fid = rif->fid; 10424 10425 mlxsw_sp_fid_rif_unset(fid); 10426 mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10427 mlxsw_sp_fid_index(fid), false); 10428 mlxsw_sp_rif_macvlan_flush(rif); 10429 mlxsw_sp_rif_subport_op(rif, false); 10430 mlxsw_sp_rif_mac_profile_put(rif->mlxsw_sp, rif->mac_profile_id); 10431 } 10432 10433 static struct mlxsw_sp_fid * 10434 mlxsw_sp_rif_subport_fid_get(struct mlxsw_sp_rif *rif, 10435 const struct mlxsw_sp_rif_params *params, 10436 struct netlink_ext_ack *extack) 10437 { 10438 return mlxsw_sp_fid_rfid_get(rif->mlxsw_sp, rif->rif_index); 10439 } 10440 10441 static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_subport_ops = { 10442 .type = MLXSW_SP_RIF_TYPE_SUBPORT, 10443 .rif_size = sizeof(struct mlxsw_sp_rif_subport), 10444 .setup = mlxsw_sp_rif_subport_setup, 10445 .configure = mlxsw_sp_rif_subport_configure, 10446 .deconfigure = mlxsw_sp_rif_subport_deconfigure, 10447 .fid_get = mlxsw_sp_rif_subport_fid_get, 10448 }; 10449 10450 static int mlxsw_sp_rif_fid_op(struct mlxsw_sp_rif *rif, u16 fid, bool enable) 10451 { 10452 enum mlxsw_reg_ritr_if_type type = MLXSW_REG_RITR_FID_IF; 10453 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10454 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10455 char ritr_pl[MLXSW_REG_RITR_LEN]; 10456 10457 mlxsw_reg_ritr_pack(ritr_pl, enable, type, rif->rif_index, rif->vr_id, 10458 dev->mtu); 10459 mlxsw_reg_ritr_mac_pack(ritr_pl, dev->dev_addr); 10460 mlxsw_reg_ritr_if_mac_profile_id_set(ritr_pl, rif->mac_profile_id); 10461 mlxsw_reg_ritr_fid_if_fid_set(ritr_pl, fid); 10462 10463 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 10464 } 10465 10466 u16 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp) 10467 { 10468 return mlxsw_core_max_ports(mlxsw_sp->core) + 1; 10469 } 10470 10471 static int mlxsw_sp_rif_fid_configure(struct mlxsw_sp_rif *rif, 10472 struct netlink_ext_ack *extack) 10473 { 10474 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10475 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10476 u16 fid_index = mlxsw_sp_fid_index(rif->fid); 10477 u8 mac_profile; 10478 int err; 10479 10480 err = mlxsw_sp_rif_mac_profile_get(mlxsw_sp, rif->addr, 10481 &mac_profile, extack); 10482 if (err) 10483 return err; 10484 rif->mac_profile_id = mac_profile; 10485 10486 err = mlxsw_sp_rif_fid_op(rif, fid_index, true); 10487 if (err) 10488 goto err_rif_fid_op; 10489 10490 err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, 10491 mlxsw_sp_router_port(mlxsw_sp), true); 10492 if (err) 10493 goto err_fid_mc_flood_set; 10494 10495 err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, 10496 mlxsw_sp_router_port(mlxsw_sp), true); 10497 if (err) 10498 goto err_fid_bc_flood_set; 10499 10500 err = mlxsw_sp_macvlan_replay(rif, extack); 10501 if (err) 10502 goto err_macvlan_replay; 10503 10504 err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10505 mlxsw_sp_fid_index(rif->fid), true); 10506 if (err) 10507 goto err_rif_fdb_op; 10508 10509 err = mlxsw_sp_fid_rif_set(rif->fid, rif); 10510 if (err) 10511 goto err_fid_rif_set; 10512 10513 return 0; 10514 10515 err_fid_rif_set: 10516 mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10517 mlxsw_sp_fid_index(rif->fid), false); 10518 err_rif_fdb_op: 10519 mlxsw_sp_rif_macvlan_flush(rif); 10520 err_macvlan_replay: 10521 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, 10522 mlxsw_sp_router_port(mlxsw_sp), false); 10523 err_fid_bc_flood_set: 10524 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, 10525 mlxsw_sp_router_port(mlxsw_sp), false); 10526 err_fid_mc_flood_set: 10527 mlxsw_sp_rif_fid_op(rif, fid_index, false); 10528 err_rif_fid_op: 10529 mlxsw_sp_rif_mac_profile_put(mlxsw_sp, mac_profile); 10530 return err; 10531 } 10532 10533 static void mlxsw_sp_rif_fid_deconfigure(struct mlxsw_sp_rif *rif) 10534 { 10535 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10536 u16 fid_index = mlxsw_sp_fid_index(rif->fid); 10537 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10538 struct mlxsw_sp_fid *fid = rif->fid; 10539 10540 mlxsw_sp_fid_rif_unset(fid); 10541 mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10542 mlxsw_sp_fid_index(fid), false); 10543 mlxsw_sp_rif_macvlan_flush(rif); 10544 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, 10545 mlxsw_sp_router_port(mlxsw_sp), false); 10546 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, 10547 mlxsw_sp_router_port(mlxsw_sp), false); 10548 mlxsw_sp_rif_fid_op(rif, fid_index, false); 10549 mlxsw_sp_rif_mac_profile_put(rif->mlxsw_sp, rif->mac_profile_id); 10550 } 10551 10552 static struct mlxsw_sp_fid * 10553 mlxsw_sp_rif_fid_fid_get(struct mlxsw_sp_rif *rif, 10554 const struct mlxsw_sp_rif_params *params, 10555 struct netlink_ext_ack *extack) 10556 { 10557 int rif_ifindex = mlxsw_sp_rif_dev_ifindex(rif); 10558 10559 return mlxsw_sp_fid_8021d_get(rif->mlxsw_sp, rif_ifindex); 10560 } 10561 10562 static void mlxsw_sp_rif_fid_fdb_del(struct mlxsw_sp_rif *rif, const char *mac) 10563 { 10564 struct switchdev_notifier_fdb_info info = {}; 10565 struct net_device *dev; 10566 10567 dev = br_fdb_find_port(mlxsw_sp_rif_dev(rif), mac, 0); 10568 if (!dev) 10569 return; 10570 10571 info.addr = mac; 10572 info.vid = 0; 10573 call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE, dev, &info.info, 10574 NULL); 10575 } 10576 10577 static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_fid_ops = { 10578 .type = MLXSW_SP_RIF_TYPE_FID, 10579 .rif_size = sizeof(struct mlxsw_sp_rif), 10580 .configure = mlxsw_sp_rif_fid_configure, 10581 .deconfigure = mlxsw_sp_rif_fid_deconfigure, 10582 .fid_get = mlxsw_sp_rif_fid_fid_get, 10583 .fdb_del = mlxsw_sp_rif_fid_fdb_del, 10584 }; 10585 10586 static struct mlxsw_sp_fid * 10587 mlxsw_sp_rif_vlan_fid_get(struct mlxsw_sp_rif *rif, 10588 const struct mlxsw_sp_rif_params *params, 10589 struct netlink_ext_ack *extack) 10590 { 10591 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10592 struct net_device *br_dev; 10593 10594 if (WARN_ON(!params->vid)) 10595 return ERR_PTR(-EINVAL); 10596 10597 if (is_vlan_dev(dev)) { 10598 br_dev = vlan_dev_real_dev(dev); 10599 if (WARN_ON(!netif_is_bridge_master(br_dev))) 10600 return ERR_PTR(-EINVAL); 10601 } 10602 10603 return mlxsw_sp_fid_8021q_get(rif->mlxsw_sp, params->vid); 10604 } 10605 10606 static void mlxsw_sp_rif_vlan_fdb_del(struct mlxsw_sp_rif *rif, const char *mac) 10607 { 10608 struct net_device *rif_dev = mlxsw_sp_rif_dev(rif); 10609 struct switchdev_notifier_fdb_info info = {}; 10610 u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); 10611 struct net_device *br_dev; 10612 struct net_device *dev; 10613 10614 br_dev = is_vlan_dev(rif_dev) ? vlan_dev_real_dev(rif_dev) : rif_dev; 10615 dev = br_fdb_find_port(br_dev, mac, vid); 10616 if (!dev) 10617 return; 10618 10619 info.addr = mac; 10620 info.vid = vid; 10621 call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE, dev, &info.info, 10622 NULL); 10623 } 10624 10625 static int mlxsw_sp_rif_vlan_op(struct mlxsw_sp_rif *rif, u16 vid, u16 efid, 10626 bool enable) 10627 { 10628 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10629 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10630 char ritr_pl[MLXSW_REG_RITR_LEN]; 10631 10632 mlxsw_reg_ritr_vlan_if_pack(ritr_pl, enable, rif->rif_index, rif->vr_id, 10633 dev->mtu, dev->dev_addr, 10634 rif->mac_profile_id, vid, efid); 10635 10636 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 10637 } 10638 10639 static int mlxsw_sp_rif_vlan_configure(struct mlxsw_sp_rif *rif, u16 efid, 10640 struct netlink_ext_ack *extack) 10641 { 10642 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10643 u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); 10644 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10645 u8 mac_profile; 10646 int err; 10647 10648 err = mlxsw_sp_rif_mac_profile_get(mlxsw_sp, rif->addr, 10649 &mac_profile, extack); 10650 if (err) 10651 return err; 10652 rif->mac_profile_id = mac_profile; 10653 10654 err = mlxsw_sp_rif_vlan_op(rif, vid, efid, true); 10655 if (err) 10656 goto err_rif_vlan_fid_op; 10657 10658 err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, 10659 mlxsw_sp_router_port(mlxsw_sp), true); 10660 if (err) 10661 goto err_fid_mc_flood_set; 10662 10663 err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, 10664 mlxsw_sp_router_port(mlxsw_sp), true); 10665 if (err) 10666 goto err_fid_bc_flood_set; 10667 10668 err = mlxsw_sp_macvlan_replay(rif, extack); 10669 if (err) 10670 goto err_macvlan_replay; 10671 10672 err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10673 mlxsw_sp_fid_index(rif->fid), true); 10674 if (err) 10675 goto err_rif_fdb_op; 10676 10677 err = mlxsw_sp_fid_rif_set(rif->fid, rif); 10678 if (err) 10679 goto err_fid_rif_set; 10680 10681 return 0; 10682 10683 err_fid_rif_set: 10684 mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10685 mlxsw_sp_fid_index(rif->fid), false); 10686 err_rif_fdb_op: 10687 mlxsw_sp_rif_macvlan_flush(rif); 10688 err_macvlan_replay: 10689 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, 10690 mlxsw_sp_router_port(mlxsw_sp), false); 10691 err_fid_bc_flood_set: 10692 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, 10693 mlxsw_sp_router_port(mlxsw_sp), false); 10694 err_fid_mc_flood_set: 10695 mlxsw_sp_rif_vlan_op(rif, vid, 0, false); 10696 err_rif_vlan_fid_op: 10697 mlxsw_sp_rif_mac_profile_put(mlxsw_sp, mac_profile); 10698 return err; 10699 } 10700 10701 static void mlxsw_sp_rif_vlan_deconfigure(struct mlxsw_sp_rif *rif) 10702 { 10703 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10704 u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid); 10705 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10706 10707 mlxsw_sp_fid_rif_unset(rif->fid); 10708 mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr, 10709 mlxsw_sp_fid_index(rif->fid), false); 10710 mlxsw_sp_rif_macvlan_flush(rif); 10711 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC, 10712 mlxsw_sp_router_port(mlxsw_sp), false); 10713 mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC, 10714 mlxsw_sp_router_port(mlxsw_sp), false); 10715 mlxsw_sp_rif_vlan_op(rif, vid, 0, false); 10716 mlxsw_sp_rif_mac_profile_put(rif->mlxsw_sp, rif->mac_profile_id); 10717 } 10718 10719 static int mlxsw_sp1_rif_vlan_configure(struct mlxsw_sp_rif *rif, 10720 struct netlink_ext_ack *extack) 10721 { 10722 return mlxsw_sp_rif_vlan_configure(rif, 0, extack); 10723 } 10724 10725 static const struct mlxsw_sp_rif_ops mlxsw_sp1_rif_vlan_ops = { 10726 .type = MLXSW_SP_RIF_TYPE_VLAN, 10727 .rif_size = sizeof(struct mlxsw_sp_rif), 10728 .configure = mlxsw_sp1_rif_vlan_configure, 10729 .deconfigure = mlxsw_sp_rif_vlan_deconfigure, 10730 .fid_get = mlxsw_sp_rif_vlan_fid_get, 10731 .fdb_del = mlxsw_sp_rif_vlan_fdb_del, 10732 }; 10733 10734 static int mlxsw_sp2_rif_vlan_configure(struct mlxsw_sp_rif *rif, 10735 struct netlink_ext_ack *extack) 10736 { 10737 u16 efid = mlxsw_sp_fid_index(rif->fid); 10738 10739 return mlxsw_sp_rif_vlan_configure(rif, efid, extack); 10740 } 10741 10742 static const struct mlxsw_sp_rif_ops mlxsw_sp2_rif_vlan_ops = { 10743 .type = MLXSW_SP_RIF_TYPE_VLAN, 10744 .rif_size = sizeof(struct mlxsw_sp_rif), 10745 .configure = mlxsw_sp2_rif_vlan_configure, 10746 .deconfigure = mlxsw_sp_rif_vlan_deconfigure, 10747 .fid_get = mlxsw_sp_rif_vlan_fid_get, 10748 .fdb_del = mlxsw_sp_rif_vlan_fdb_del, 10749 }; 10750 10751 static struct mlxsw_sp_rif_ipip_lb * 10752 mlxsw_sp_rif_ipip_lb_rif(struct mlxsw_sp_rif *rif) 10753 { 10754 return container_of(rif, struct mlxsw_sp_rif_ipip_lb, common); 10755 } 10756 10757 static void 10758 mlxsw_sp_rif_ipip_lb_setup(struct mlxsw_sp_rif *rif, 10759 const struct mlxsw_sp_rif_params *params) 10760 { 10761 struct mlxsw_sp_rif_params_ipip_lb *params_lb; 10762 struct mlxsw_sp_rif_ipip_lb *rif_lb; 10763 10764 params_lb = container_of(params, struct mlxsw_sp_rif_params_ipip_lb, 10765 common); 10766 rif_lb = mlxsw_sp_rif_ipip_lb_rif(rif); 10767 rif_lb->lb_config = params_lb->lb_config; 10768 } 10769 10770 static int 10771 mlxsw_sp1_rif_ipip_lb_configure(struct mlxsw_sp_rif *rif, 10772 struct netlink_ext_ack *extack) 10773 { 10774 struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); 10775 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10776 u32 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(dev); 10777 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10778 struct mlxsw_sp_vr *ul_vr; 10779 int err; 10780 10781 ul_vr = mlxsw_sp_vr_get(mlxsw_sp, ul_tb_id, extack); 10782 if (IS_ERR(ul_vr)) 10783 return PTR_ERR(ul_vr); 10784 10785 err = mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr->id, 0, true); 10786 if (err) 10787 goto err_loopback_op; 10788 10789 lb_rif->ul_vr_id = ul_vr->id; 10790 lb_rif->ul_rif_id = 0; 10791 ++ul_vr->rif_count; 10792 return 0; 10793 10794 err_loopback_op: 10795 mlxsw_sp_vr_put(mlxsw_sp, ul_vr); 10796 return err; 10797 } 10798 10799 static void mlxsw_sp1_rif_ipip_lb_deconfigure(struct mlxsw_sp_rif *rif) 10800 { 10801 struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); 10802 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10803 struct mlxsw_sp_vr *ul_vr; 10804 10805 ul_vr = &mlxsw_sp->router->vrs[lb_rif->ul_vr_id]; 10806 mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr->id, 0, false); 10807 10808 --ul_vr->rif_count; 10809 mlxsw_sp_vr_put(mlxsw_sp, ul_vr); 10810 } 10811 10812 static const struct mlxsw_sp_rif_ops mlxsw_sp1_rif_ipip_lb_ops = { 10813 .type = MLXSW_SP_RIF_TYPE_IPIP_LB, 10814 .rif_size = sizeof(struct mlxsw_sp_rif_ipip_lb), 10815 .setup = mlxsw_sp_rif_ipip_lb_setup, 10816 .configure = mlxsw_sp1_rif_ipip_lb_configure, 10817 .deconfigure = mlxsw_sp1_rif_ipip_lb_deconfigure, 10818 }; 10819 10820 static const struct mlxsw_sp_rif_ops *mlxsw_sp1_rif_ops_arr[] = { 10821 [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops, 10822 [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp1_rif_vlan_ops, 10823 [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops, 10824 [MLXSW_SP_RIF_TYPE_IPIP_LB] = &mlxsw_sp1_rif_ipip_lb_ops, 10825 }; 10826 10827 static int 10828 mlxsw_sp_rif_ipip_lb_ul_rif_op(struct mlxsw_sp_rif *ul_rif, bool enable) 10829 { 10830 struct mlxsw_sp *mlxsw_sp = ul_rif->mlxsw_sp; 10831 char ritr_pl[MLXSW_REG_RITR_LEN]; 10832 10833 mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF, 10834 ul_rif->rif_index, ul_rif->vr_id, IP_MAX_MTU); 10835 mlxsw_reg_ritr_loopback_protocol_set(ritr_pl, 10836 MLXSW_REG_RITR_LOOPBACK_GENERIC); 10837 10838 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); 10839 } 10840 10841 static struct mlxsw_sp_rif * 10842 mlxsw_sp_ul_rif_create(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_vr *vr, 10843 struct mlxsw_sp_crif *ul_crif, 10844 struct netlink_ext_ack *extack) 10845 { 10846 struct mlxsw_sp_rif *ul_rif; 10847 u8 rif_entries = 1; 10848 u16 rif_index; 10849 int err; 10850 10851 err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index, rif_entries); 10852 if (err) { 10853 NL_SET_ERR_MSG_MOD(extack, "Exceeded number of supported router interfaces"); 10854 return ERR_PTR(err); 10855 } 10856 10857 ul_rif = mlxsw_sp_rif_alloc(sizeof(*ul_rif), rif_index, vr->id, 10858 ul_crif); 10859 if (!ul_rif) { 10860 err = -ENOMEM; 10861 goto err_rif_alloc; 10862 } 10863 10864 mlxsw_sp->router->rifs[rif_index] = ul_rif; 10865 ul_rif->mlxsw_sp = mlxsw_sp; 10866 ul_rif->rif_entries = rif_entries; 10867 err = mlxsw_sp_rif_ipip_lb_ul_rif_op(ul_rif, true); 10868 if (err) 10869 goto ul_rif_op_err; 10870 10871 atomic_add(rif_entries, &mlxsw_sp->router->rifs_count); 10872 return ul_rif; 10873 10874 ul_rif_op_err: 10875 mlxsw_sp->router->rifs[rif_index] = NULL; 10876 mlxsw_sp_rif_free(ul_rif); 10877 err_rif_alloc: 10878 mlxsw_sp_rif_index_free(mlxsw_sp, rif_index, rif_entries); 10879 return ERR_PTR(err); 10880 } 10881 10882 static void mlxsw_sp_ul_rif_destroy(struct mlxsw_sp_rif *ul_rif) 10883 { 10884 struct mlxsw_sp *mlxsw_sp = ul_rif->mlxsw_sp; 10885 u8 rif_entries = ul_rif->rif_entries; 10886 u16 rif_index = ul_rif->rif_index; 10887 10888 atomic_sub(rif_entries, &mlxsw_sp->router->rifs_count); 10889 mlxsw_sp_rif_ipip_lb_ul_rif_op(ul_rif, false); 10890 mlxsw_sp->router->rifs[ul_rif->rif_index] = NULL; 10891 mlxsw_sp_rif_free(ul_rif); 10892 mlxsw_sp_rif_index_free(mlxsw_sp, rif_index, rif_entries); 10893 } 10894 10895 static struct mlxsw_sp_rif * 10896 mlxsw_sp_ul_rif_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id, 10897 struct mlxsw_sp_crif *ul_crif, 10898 struct netlink_ext_ack *extack) 10899 { 10900 struct mlxsw_sp_vr *vr; 10901 int err; 10902 10903 vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id, extack); 10904 if (IS_ERR(vr)) 10905 return ERR_CAST(vr); 10906 10907 if (refcount_inc_not_zero(&vr->ul_rif_refcnt)) 10908 return vr->ul_rif; 10909 10910 vr->ul_rif = mlxsw_sp_ul_rif_create(mlxsw_sp, vr, ul_crif, extack); 10911 if (IS_ERR(vr->ul_rif)) { 10912 err = PTR_ERR(vr->ul_rif); 10913 goto err_ul_rif_create; 10914 } 10915 10916 vr->rif_count++; 10917 refcount_set(&vr->ul_rif_refcnt, 1); 10918 10919 return vr->ul_rif; 10920 10921 err_ul_rif_create: 10922 mlxsw_sp_vr_put(mlxsw_sp, vr); 10923 return ERR_PTR(err); 10924 } 10925 10926 static void mlxsw_sp_ul_rif_put(struct mlxsw_sp_rif *ul_rif) 10927 { 10928 struct mlxsw_sp *mlxsw_sp = ul_rif->mlxsw_sp; 10929 struct mlxsw_sp_vr *vr; 10930 10931 vr = &mlxsw_sp->router->vrs[ul_rif->vr_id]; 10932 10933 if (!refcount_dec_and_test(&vr->ul_rif_refcnt)) 10934 return; 10935 10936 vr->rif_count--; 10937 mlxsw_sp_ul_rif_destroy(ul_rif); 10938 mlxsw_sp_vr_put(mlxsw_sp, vr); 10939 } 10940 10941 int mlxsw_sp_router_ul_rif_get(struct mlxsw_sp *mlxsw_sp, u32 ul_tb_id, 10942 u16 *ul_rif_index) 10943 { 10944 struct mlxsw_sp_rif *ul_rif; 10945 int err = 0; 10946 10947 mutex_lock(&mlxsw_sp->router->lock); 10948 ul_rif = mlxsw_sp_ul_rif_get(mlxsw_sp, ul_tb_id, NULL, NULL); 10949 if (IS_ERR(ul_rif)) { 10950 err = PTR_ERR(ul_rif); 10951 goto out; 10952 } 10953 *ul_rif_index = ul_rif->rif_index; 10954 out: 10955 mutex_unlock(&mlxsw_sp->router->lock); 10956 return err; 10957 } 10958 10959 void mlxsw_sp_router_ul_rif_put(struct mlxsw_sp *mlxsw_sp, u16 ul_rif_index) 10960 { 10961 struct mlxsw_sp_rif *ul_rif; 10962 10963 mutex_lock(&mlxsw_sp->router->lock); 10964 ul_rif = mlxsw_sp->router->rifs[ul_rif_index]; 10965 if (WARN_ON(!ul_rif)) 10966 goto out; 10967 10968 mlxsw_sp_ul_rif_put(ul_rif); 10969 out: 10970 mutex_unlock(&mlxsw_sp->router->lock); 10971 } 10972 10973 static int 10974 mlxsw_sp2_rif_ipip_lb_configure(struct mlxsw_sp_rif *rif, 10975 struct netlink_ext_ack *extack) 10976 { 10977 struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); 10978 struct net_device *dev = mlxsw_sp_rif_dev(rif); 10979 u32 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(dev); 10980 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 10981 struct mlxsw_sp_rif *ul_rif; 10982 int err; 10983 10984 ul_rif = mlxsw_sp_ul_rif_get(mlxsw_sp, ul_tb_id, NULL, extack); 10985 if (IS_ERR(ul_rif)) 10986 return PTR_ERR(ul_rif); 10987 10988 err = mlxsw_sp_rif_ipip_lb_op(lb_rif, 0, ul_rif->rif_index, true); 10989 if (err) 10990 goto err_loopback_op; 10991 10992 lb_rif->ul_vr_id = 0; 10993 lb_rif->ul_rif_id = ul_rif->rif_index; 10994 10995 return 0; 10996 10997 err_loopback_op: 10998 mlxsw_sp_ul_rif_put(ul_rif); 10999 return err; 11000 } 11001 11002 static void mlxsw_sp2_rif_ipip_lb_deconfigure(struct mlxsw_sp_rif *rif) 11003 { 11004 struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif); 11005 struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp; 11006 struct mlxsw_sp_rif *ul_rif; 11007 11008 ul_rif = mlxsw_sp_rif_by_index(mlxsw_sp, lb_rif->ul_rif_id); 11009 mlxsw_sp_rif_ipip_lb_op(lb_rif, 0, lb_rif->ul_rif_id, false); 11010 mlxsw_sp_ul_rif_put(ul_rif); 11011 } 11012 11013 static const struct mlxsw_sp_rif_ops mlxsw_sp2_rif_ipip_lb_ops = { 11014 .type = MLXSW_SP_RIF_TYPE_IPIP_LB, 11015 .rif_size = sizeof(struct mlxsw_sp_rif_ipip_lb), 11016 .setup = mlxsw_sp_rif_ipip_lb_setup, 11017 .configure = mlxsw_sp2_rif_ipip_lb_configure, 11018 .deconfigure = mlxsw_sp2_rif_ipip_lb_deconfigure, 11019 }; 11020 11021 static const struct mlxsw_sp_rif_ops *mlxsw_sp2_rif_ops_arr[] = { 11022 [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops, 11023 [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp2_rif_vlan_ops, 11024 [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops, 11025 [MLXSW_SP_RIF_TYPE_IPIP_LB] = &mlxsw_sp2_rif_ipip_lb_ops, 11026 }; 11027 11028 static int mlxsw_sp_rifs_table_init(struct mlxsw_sp *mlxsw_sp) 11029 { 11030 struct gen_pool *rifs_table; 11031 int err; 11032 11033 rifs_table = gen_pool_create(0, -1); 11034 if (!rifs_table) 11035 return -ENOMEM; 11036 11037 gen_pool_set_algo(rifs_table, gen_pool_first_fit_order_align, 11038 NULL); 11039 11040 err = gen_pool_add(rifs_table, MLXSW_SP_ROUTER_GENALLOC_OFFSET, 11041 MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS), -1); 11042 if (err) 11043 goto err_gen_pool_add; 11044 11045 mlxsw_sp->router->rifs_table = rifs_table; 11046 11047 return 0; 11048 11049 err_gen_pool_add: 11050 gen_pool_destroy(rifs_table); 11051 return err; 11052 } 11053 11054 static void mlxsw_sp_rifs_table_fini(struct mlxsw_sp *mlxsw_sp) 11055 { 11056 gen_pool_destroy(mlxsw_sp->router->rifs_table); 11057 } 11058 11059 static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp) 11060 { 11061 u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); 11062 struct devlink *devlink = priv_to_devlink(mlxsw_sp->core); 11063 struct mlxsw_core *core = mlxsw_sp->core; 11064 int err; 11065 11066 if (!MLXSW_CORE_RES_VALID(core, MAX_RIF_MAC_PROFILES)) 11067 return -EIO; 11068 mlxsw_sp->router->max_rif_mac_profile = 11069 MLXSW_CORE_RES_GET(core, MAX_RIF_MAC_PROFILES); 11070 11071 mlxsw_sp->router->rifs = kcalloc(max_rifs, 11072 sizeof(struct mlxsw_sp_rif *), 11073 GFP_KERNEL); 11074 if (!mlxsw_sp->router->rifs) 11075 return -ENOMEM; 11076 11077 err = mlxsw_sp_rifs_table_init(mlxsw_sp); 11078 if (err) 11079 goto err_rifs_table_init; 11080 11081 idr_init(&mlxsw_sp->router->rif_mac_profiles_idr); 11082 atomic_set(&mlxsw_sp->router->rif_mac_profiles_count, 0); 11083 atomic_set(&mlxsw_sp->router->rifs_count, 0); 11084 devl_resource_occ_get_register(devlink, 11085 MLXSW_SP_RESOURCE_RIF_MAC_PROFILES, 11086 mlxsw_sp_rif_mac_profiles_occ_get, 11087 mlxsw_sp); 11088 devl_resource_occ_get_register(devlink, 11089 MLXSW_SP_RESOURCE_RIFS, 11090 mlxsw_sp_rifs_occ_get, 11091 mlxsw_sp); 11092 11093 return 0; 11094 11095 err_rifs_table_init: 11096 kfree(mlxsw_sp->router->rifs); 11097 return err; 11098 } 11099 11100 static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp) 11101 { 11102 int max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); 11103 struct devlink *devlink = priv_to_devlink(mlxsw_sp->core); 11104 int i; 11105 11106 WARN_ON_ONCE(atomic_read(&mlxsw_sp->router->rifs_count)); 11107 for (i = 0; i < max_rifs; i++) 11108 WARN_ON_ONCE(mlxsw_sp->router->rifs[i]); 11109 11110 devl_resource_occ_get_unregister(devlink, MLXSW_SP_RESOURCE_RIFS); 11111 devl_resource_occ_get_unregister(devlink, 11112 MLXSW_SP_RESOURCE_RIF_MAC_PROFILES); 11113 WARN_ON(!idr_is_empty(&mlxsw_sp->router->rif_mac_profiles_idr)); 11114 idr_destroy(&mlxsw_sp->router->rif_mac_profiles_idr); 11115 mlxsw_sp_rifs_table_fini(mlxsw_sp); 11116 kfree(mlxsw_sp->router->rifs); 11117 } 11118 11119 static int 11120 mlxsw_sp_ipip_config_tigcr(struct mlxsw_sp *mlxsw_sp) 11121 { 11122 char tigcr_pl[MLXSW_REG_TIGCR_LEN]; 11123 11124 mlxsw_reg_tigcr_pack(tigcr_pl, true, 0); 11125 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tigcr), tigcr_pl); 11126 } 11127 11128 static int mlxsw_sp_ipips_init(struct mlxsw_sp *mlxsw_sp) 11129 { 11130 int err; 11131 11132 INIT_LIST_HEAD(&mlxsw_sp->router->ipip_list); 11133 11134 err = mlxsw_sp_ipip_ecn_encap_init(mlxsw_sp); 11135 if (err) 11136 return err; 11137 err = mlxsw_sp_ipip_ecn_decap_init(mlxsw_sp); 11138 if (err) 11139 return err; 11140 11141 return mlxsw_sp_ipip_config_tigcr(mlxsw_sp); 11142 } 11143 11144 static int mlxsw_sp1_ipips_init(struct mlxsw_sp *mlxsw_sp) 11145 { 11146 mlxsw_sp->router->ipip_ops_arr = mlxsw_sp1_ipip_ops_arr; 11147 return mlxsw_sp_ipips_init(mlxsw_sp); 11148 } 11149 11150 static int mlxsw_sp2_ipips_init(struct mlxsw_sp *mlxsw_sp) 11151 { 11152 mlxsw_sp->router->ipip_ops_arr = mlxsw_sp2_ipip_ops_arr; 11153 return mlxsw_sp_ipips_init(mlxsw_sp); 11154 } 11155 11156 static void mlxsw_sp_ipips_fini(struct mlxsw_sp *mlxsw_sp) 11157 { 11158 WARN_ON(!list_empty(&mlxsw_sp->router->ipip_list)); 11159 } 11160 11161 static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) 11162 { 11163 struct mlxsw_sp_router *router; 11164 11165 /* Flush pending FIB notifications and then flush the device's 11166 * table before requesting another dump. The FIB notification 11167 * block is unregistered, so no need to take RTNL. 11168 */ 11169 mlxsw_core_flush_owq(); 11170 router = container_of(nb, struct mlxsw_sp_router, fib_nb); 11171 mlxsw_sp_router_fib_flush(router->mlxsw_sp); 11172 } 11173 11174 #ifdef CONFIG_IP_ROUTE_MULTIPATH 11175 struct mlxsw_sp_mp_hash_config { 11176 DECLARE_BITMAP(headers, __MLXSW_REG_RECR2_HEADER_CNT); 11177 DECLARE_BITMAP(fields, __MLXSW_REG_RECR2_FIELD_CNT); 11178 DECLARE_BITMAP(inner_headers, __MLXSW_REG_RECR2_HEADER_CNT); 11179 DECLARE_BITMAP(inner_fields, __MLXSW_REG_RECR2_INNER_FIELD_CNT); 11180 bool inc_parsing_depth; 11181 }; 11182 11183 #define MLXSW_SP_MP_HASH_HEADER_SET(_headers, _header) \ 11184 bitmap_set(_headers, MLXSW_REG_RECR2_##_header, 1) 11185 11186 #define MLXSW_SP_MP_HASH_FIELD_SET(_fields, _field) \ 11187 bitmap_set(_fields, MLXSW_REG_RECR2_##_field, 1) 11188 11189 #define MLXSW_SP_MP_HASH_FIELD_RANGE_SET(_fields, _field, _nr) \ 11190 bitmap_set(_fields, MLXSW_REG_RECR2_##_field, _nr) 11191 11192 static void mlxsw_sp_mp_hash_inner_l3(struct mlxsw_sp_mp_hash_config *config) 11193 { 11194 unsigned long *inner_headers = config->inner_headers; 11195 unsigned long *inner_fields = config->inner_fields; 11196 11197 /* IPv4 inner */ 11198 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_NOT_TCP_NOT_UDP); 11199 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_TCP_UDP); 11200 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_SIP0, 4); 11201 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_DIP0, 4); 11202 /* IPv6 inner */ 11203 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_NOT_TCP_NOT_UDP); 11204 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_TCP_UDP); 11205 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_SIP0_7); 11206 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_SIP8, 8); 11207 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_DIP0_7); 11208 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_DIP8, 8); 11209 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_NEXT_HEADER); 11210 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_FLOW_LABEL); 11211 } 11212 11213 static void mlxsw_sp_mp4_hash_outer_addr(struct mlxsw_sp_mp_hash_config *config) 11214 { 11215 unsigned long *headers = config->headers; 11216 unsigned long *fields = config->fields; 11217 11218 MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_NOT_TCP_NOT_UDP); 11219 MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_TCP_UDP); 11220 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_SIP0, 4); 11221 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_DIP0, 4); 11222 } 11223 11224 static void 11225 mlxsw_sp_mp_hash_inner_custom(struct mlxsw_sp_mp_hash_config *config, 11226 u32 hash_fields) 11227 { 11228 unsigned long *inner_headers = config->inner_headers; 11229 unsigned long *inner_fields = config->inner_fields; 11230 11231 /* IPv4 Inner */ 11232 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_NOT_TCP_NOT_UDP); 11233 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_TCP_UDP); 11234 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_IP) 11235 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_SIP0, 4); 11236 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_IP) 11237 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_DIP0, 4); 11238 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_IP_PROTO) 11239 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV4_PROTOCOL); 11240 /* IPv6 inner */ 11241 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_NOT_TCP_NOT_UDP); 11242 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_TCP_UDP); 11243 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_IP) { 11244 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_SIP0_7); 11245 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_SIP8, 8); 11246 } 11247 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_IP) { 11248 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_DIP0_7); 11249 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_DIP8, 8); 11250 } 11251 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_IP_PROTO) 11252 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_NEXT_HEADER); 11253 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_FLOWLABEL) 11254 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_FLOW_LABEL); 11255 /* L4 inner */ 11256 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, TCP_UDP_EN_IPV4); 11257 MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, TCP_UDP_EN_IPV6); 11258 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_PORT) 11259 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_TCP_UDP_SPORT); 11260 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_PORT) 11261 MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_TCP_UDP_DPORT); 11262 } 11263 11264 static void mlxsw_sp_mp4_hash_init(struct mlxsw_sp *mlxsw_sp, 11265 struct mlxsw_sp_mp_hash_config *config) 11266 { 11267 struct net *net = mlxsw_sp_net(mlxsw_sp); 11268 unsigned long *headers = config->headers; 11269 unsigned long *fields = config->fields; 11270 u32 hash_fields; 11271 11272 switch (READ_ONCE(net->ipv4.sysctl_fib_multipath_hash_policy)) { 11273 case 0: 11274 mlxsw_sp_mp4_hash_outer_addr(config); 11275 break; 11276 case 1: 11277 mlxsw_sp_mp4_hash_outer_addr(config); 11278 MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV4); 11279 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV4_PROTOCOL); 11280 MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT); 11281 MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT); 11282 break; 11283 case 2: 11284 /* Outer */ 11285 mlxsw_sp_mp4_hash_outer_addr(config); 11286 /* Inner */ 11287 mlxsw_sp_mp_hash_inner_l3(config); 11288 break; 11289 case 3: 11290 hash_fields = READ_ONCE(net->ipv4.sysctl_fib_multipath_hash_fields); 11291 /* Outer */ 11292 MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_NOT_TCP_NOT_UDP); 11293 MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_TCP_UDP); 11294 MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV4); 11295 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_IP) 11296 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_SIP0, 4); 11297 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_IP) 11298 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_DIP0, 4); 11299 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_IP_PROTO) 11300 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV4_PROTOCOL); 11301 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_PORT) 11302 MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT); 11303 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_PORT) 11304 MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT); 11305 /* Inner */ 11306 mlxsw_sp_mp_hash_inner_custom(config, hash_fields); 11307 break; 11308 } 11309 } 11310 11311 static void mlxsw_sp_mp6_hash_outer_addr(struct mlxsw_sp_mp_hash_config *config) 11312 { 11313 unsigned long *headers = config->headers; 11314 unsigned long *fields = config->fields; 11315 11316 MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_NOT_TCP_NOT_UDP); 11317 MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_TCP_UDP); 11318 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_SIP0_7); 11319 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_SIP8, 8); 11320 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_DIP0_7); 11321 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_DIP8, 8); 11322 } 11323 11324 static void mlxsw_sp_mp6_hash_init(struct mlxsw_sp *mlxsw_sp, 11325 struct mlxsw_sp_mp_hash_config *config) 11326 { 11327 u32 hash_fields = ip6_multipath_hash_fields(mlxsw_sp_net(mlxsw_sp)); 11328 unsigned long *headers = config->headers; 11329 unsigned long *fields = config->fields; 11330 11331 switch (ip6_multipath_hash_policy(mlxsw_sp_net(mlxsw_sp))) { 11332 case 0: 11333 mlxsw_sp_mp6_hash_outer_addr(config); 11334 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER); 11335 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_FLOW_LABEL); 11336 break; 11337 case 1: 11338 mlxsw_sp_mp6_hash_outer_addr(config); 11339 MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV6); 11340 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER); 11341 MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT); 11342 MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT); 11343 break; 11344 case 2: 11345 /* Outer */ 11346 mlxsw_sp_mp6_hash_outer_addr(config); 11347 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER); 11348 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_FLOW_LABEL); 11349 /* Inner */ 11350 mlxsw_sp_mp_hash_inner_l3(config); 11351 config->inc_parsing_depth = true; 11352 break; 11353 case 3: 11354 /* Outer */ 11355 MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_NOT_TCP_NOT_UDP); 11356 MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_TCP_UDP); 11357 MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV6); 11358 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_IP) { 11359 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_SIP0_7); 11360 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_SIP8, 8); 11361 } 11362 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_IP) { 11363 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_DIP0_7); 11364 MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_DIP8, 8); 11365 } 11366 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_IP_PROTO) 11367 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER); 11368 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_FLOWLABEL) 11369 MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_FLOW_LABEL); 11370 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_PORT) 11371 MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT); 11372 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_PORT) 11373 MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT); 11374 /* Inner */ 11375 mlxsw_sp_mp_hash_inner_custom(config, hash_fields); 11376 if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_MASK) 11377 config->inc_parsing_depth = true; 11378 break; 11379 } 11380 } 11381 11382 static int mlxsw_sp_mp_hash_parsing_depth_adjust(struct mlxsw_sp *mlxsw_sp, 11383 bool old_inc_parsing_depth, 11384 bool new_inc_parsing_depth) 11385 { 11386 int err; 11387 11388 if (!old_inc_parsing_depth && new_inc_parsing_depth) { 11389 err = mlxsw_sp_parsing_depth_inc(mlxsw_sp); 11390 if (err) 11391 return err; 11392 mlxsw_sp->router->inc_parsing_depth = true; 11393 } else if (old_inc_parsing_depth && !new_inc_parsing_depth) { 11394 mlxsw_sp_parsing_depth_dec(mlxsw_sp); 11395 mlxsw_sp->router->inc_parsing_depth = false; 11396 } 11397 11398 return 0; 11399 } 11400 11401 static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp) 11402 { 11403 bool old_inc_parsing_depth, new_inc_parsing_depth; 11404 struct mlxsw_sp_mp_hash_config config = {}; 11405 struct net *net = mlxsw_sp_net(mlxsw_sp); 11406 char recr2_pl[MLXSW_REG_RECR2_LEN]; 11407 unsigned long bit; 11408 u32 seed; 11409 int err; 11410 11411 seed = READ_ONCE(net->ipv4.sysctl_fib_multipath_hash_seed).user_seed; 11412 if (!seed) 11413 seed = jhash(mlxsw_sp->base_mac, sizeof(mlxsw_sp->base_mac), 0); 11414 11415 mlxsw_reg_recr2_pack(recr2_pl, seed); 11416 mlxsw_sp_mp4_hash_init(mlxsw_sp, &config); 11417 mlxsw_sp_mp6_hash_init(mlxsw_sp, &config); 11418 11419 old_inc_parsing_depth = mlxsw_sp->router->inc_parsing_depth; 11420 new_inc_parsing_depth = config.inc_parsing_depth; 11421 err = mlxsw_sp_mp_hash_parsing_depth_adjust(mlxsw_sp, 11422 old_inc_parsing_depth, 11423 new_inc_parsing_depth); 11424 if (err) 11425 return err; 11426 11427 for_each_set_bit(bit, config.headers, __MLXSW_REG_RECR2_HEADER_CNT) 11428 mlxsw_reg_recr2_outer_header_enables_set(recr2_pl, bit, 1); 11429 for_each_set_bit(bit, config.fields, __MLXSW_REG_RECR2_FIELD_CNT) 11430 mlxsw_reg_recr2_outer_header_fields_enable_set(recr2_pl, bit, 1); 11431 for_each_set_bit(bit, config.inner_headers, __MLXSW_REG_RECR2_HEADER_CNT) 11432 mlxsw_reg_recr2_inner_header_enables_set(recr2_pl, bit, 1); 11433 for_each_set_bit(bit, config.inner_fields, __MLXSW_REG_RECR2_INNER_FIELD_CNT) 11434 mlxsw_reg_recr2_inner_header_fields_enable_set(recr2_pl, bit, 1); 11435 11436 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(recr2), recr2_pl); 11437 if (err) 11438 goto err_reg_write; 11439 11440 return 0; 11441 11442 err_reg_write: 11443 mlxsw_sp_mp_hash_parsing_depth_adjust(mlxsw_sp, new_inc_parsing_depth, 11444 old_inc_parsing_depth); 11445 return err; 11446 } 11447 11448 static void mlxsw_sp_mp_hash_fini(struct mlxsw_sp *mlxsw_sp) 11449 { 11450 bool old_inc_parsing_depth = mlxsw_sp->router->inc_parsing_depth; 11451 11452 mlxsw_sp_mp_hash_parsing_depth_adjust(mlxsw_sp, old_inc_parsing_depth, 11453 false); 11454 } 11455 #else 11456 static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp) 11457 { 11458 return 0; 11459 } 11460 11461 static void mlxsw_sp_mp_hash_fini(struct mlxsw_sp *mlxsw_sp) 11462 { 11463 } 11464 #endif 11465 11466 static int mlxsw_sp_dscp_init(struct mlxsw_sp *mlxsw_sp) 11467 { 11468 char rdpm_pl[MLXSW_REG_RDPM_LEN]; 11469 unsigned int i; 11470 11471 MLXSW_REG_ZERO(rdpm, rdpm_pl); 11472 11473 /* HW is determining switch priority based on DSCP-bits, but the 11474 * kernel is still doing that based on the ToS. Since there's a 11475 * mismatch in bits we need to make sure to translate the right 11476 * value ToS would observe, skipping the 2 least-significant ECN bits. 11477 */ 11478 for (i = 0; i < MLXSW_REG_RDPM_DSCP_ENTRY_REC_MAX_COUNT; i++) 11479 mlxsw_reg_rdpm_pack(rdpm_pl, i, rt_tos2priority(i << 2)); 11480 11481 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rdpm), rdpm_pl); 11482 } 11483 11484 static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) 11485 { 11486 struct net *net = mlxsw_sp_net(mlxsw_sp); 11487 char rgcr_pl[MLXSW_REG_RGCR_LEN]; 11488 u64 max_rifs; 11489 bool usp; 11490 11491 if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) 11492 return -EIO; 11493 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); 11494 usp = READ_ONCE(net->ipv4.sysctl_ip_fwd_update_priority); 11495 11496 mlxsw_reg_rgcr_pack(rgcr_pl, true, true); 11497 mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); 11498 mlxsw_reg_rgcr_usp_set(rgcr_pl, usp); 11499 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); 11500 } 11501 11502 static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) 11503 { 11504 char rgcr_pl[MLXSW_REG_RGCR_LEN]; 11505 11506 mlxsw_reg_rgcr_pack(rgcr_pl, false, false); 11507 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); 11508 } 11509 11510 static int mlxsw_sp_lb_rif_init(struct mlxsw_sp *mlxsw_sp, 11511 struct netlink_ext_ack *extack) 11512 { 11513 struct mlxsw_sp_router *router = mlxsw_sp->router; 11514 struct mlxsw_sp_rif *lb_rif; 11515 int err; 11516 11517 router->lb_crif = mlxsw_sp_crif_alloc(NULL); 11518 if (!router->lb_crif) 11519 return -ENOMEM; 11520 11521 /* Create a generic loopback RIF associated with the main table 11522 * (default VRF). Any table can be used, but the main table exists 11523 * anyway, so we do not waste resources. Loopback RIFs are usually 11524 * created with a NULL CRIF, but this RIF is used as a fallback RIF 11525 * for blackhole nexthops, and nexthops expect to have a valid CRIF. 11526 */ 11527 lb_rif = mlxsw_sp_ul_rif_get(mlxsw_sp, RT_TABLE_MAIN, router->lb_crif, 11528 extack); 11529 if (IS_ERR(lb_rif)) { 11530 err = PTR_ERR(lb_rif); 11531 goto err_ul_rif_get; 11532 } 11533 11534 return 0; 11535 11536 err_ul_rif_get: 11537 mlxsw_sp_crif_free(router->lb_crif); 11538 return err; 11539 } 11540 11541 static void mlxsw_sp_lb_rif_fini(struct mlxsw_sp *mlxsw_sp) 11542 { 11543 mlxsw_sp_ul_rif_put(mlxsw_sp->router->lb_crif->rif); 11544 mlxsw_sp_crif_free(mlxsw_sp->router->lb_crif); 11545 } 11546 11547 static int mlxsw_sp1_router_init(struct mlxsw_sp *mlxsw_sp) 11548 { 11549 size_t size_ranges_count = ARRAY_SIZE(mlxsw_sp1_adj_grp_size_ranges); 11550 11551 mlxsw_sp->router->rif_ops_arr = mlxsw_sp1_rif_ops_arr; 11552 mlxsw_sp->router->adj_grp_size_ranges = mlxsw_sp1_adj_grp_size_ranges; 11553 mlxsw_sp->router->adj_grp_size_ranges_count = size_ranges_count; 11554 11555 return 0; 11556 } 11557 11558 const struct mlxsw_sp_router_ops mlxsw_sp1_router_ops = { 11559 .init = mlxsw_sp1_router_init, 11560 .ipips_init = mlxsw_sp1_ipips_init, 11561 }; 11562 11563 static int mlxsw_sp2_router_init(struct mlxsw_sp *mlxsw_sp) 11564 { 11565 size_t size_ranges_count = ARRAY_SIZE(mlxsw_sp2_adj_grp_size_ranges); 11566 11567 mlxsw_sp->router->rif_ops_arr = mlxsw_sp2_rif_ops_arr; 11568 mlxsw_sp->router->adj_grp_size_ranges = mlxsw_sp2_adj_grp_size_ranges; 11569 mlxsw_sp->router->adj_grp_size_ranges_count = size_ranges_count; 11570 11571 return 0; 11572 } 11573 11574 const struct mlxsw_sp_router_ops mlxsw_sp2_router_ops = { 11575 .init = mlxsw_sp2_router_init, 11576 .ipips_init = mlxsw_sp2_ipips_init, 11577 }; 11578 11579 int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp, 11580 struct netlink_ext_ack *extack) 11581 { 11582 struct mlxsw_sp_router *router; 11583 struct notifier_block *nb; 11584 int err; 11585 11586 router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL); 11587 if (!router) 11588 return -ENOMEM; 11589 mutex_init(&router->lock); 11590 mlxsw_sp->router = router; 11591 router->mlxsw_sp = mlxsw_sp; 11592 11593 err = mlxsw_sp->router_ops->init(mlxsw_sp); 11594 if (err) 11595 goto err_router_ops_init; 11596 11597 INIT_LIST_HEAD(&mlxsw_sp->router->nh_res_grp_list); 11598 INIT_DELAYED_WORK(&mlxsw_sp->router->nh_grp_activity_dw, 11599 mlxsw_sp_nh_grp_activity_work); 11600 INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list); 11601 err = __mlxsw_sp_router_init(mlxsw_sp); 11602 if (err) 11603 goto err_router_init; 11604 11605 err = mlxsw_sp->router_ops->ipips_init(mlxsw_sp); 11606 if (err) 11607 goto err_ipips_init; 11608 11609 err = rhashtable_init(&mlxsw_sp->router->crif_ht, 11610 &mlxsw_sp_crif_ht_params); 11611 if (err) 11612 goto err_crif_ht_init; 11613 11614 err = mlxsw_sp_rifs_init(mlxsw_sp); 11615 if (err) 11616 goto err_rifs_init; 11617 11618 err = rhashtable_init(&mlxsw_sp->router->nexthop_ht, 11619 &mlxsw_sp_nexthop_ht_params); 11620 if (err) 11621 goto err_nexthop_ht_init; 11622 11623 err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht, 11624 &mlxsw_sp_nexthop_group_ht_params); 11625 if (err) 11626 goto err_nexthop_group_ht_init; 11627 11628 INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_list); 11629 err = mlxsw_sp_lpm_init(mlxsw_sp); 11630 if (err) 11631 goto err_lpm_init; 11632 11633 err = mlxsw_sp_mr_init(mlxsw_sp, &mlxsw_sp_mr_tcam_ops); 11634 if (err) 11635 goto err_mr_init; 11636 11637 err = mlxsw_sp_vrs_init(mlxsw_sp); 11638 if (err) 11639 goto err_vrs_init; 11640 11641 err = mlxsw_sp_lb_rif_init(mlxsw_sp, extack); 11642 if (err) 11643 goto err_lb_rif_init; 11644 11645 err = mlxsw_sp_neigh_init(mlxsw_sp); 11646 if (err) 11647 goto err_neigh_init; 11648 11649 err = mlxsw_sp_mp_hash_init(mlxsw_sp); 11650 if (err) 11651 goto err_mp_hash_init; 11652 11653 err = mlxsw_sp_dscp_init(mlxsw_sp); 11654 if (err) 11655 goto err_dscp_init; 11656 11657 router->inetaddr_nb.notifier_call = mlxsw_sp_inetaddr_event; 11658 err = register_inetaddr_notifier(&router->inetaddr_nb); 11659 if (err) 11660 goto err_register_inetaddr_notifier; 11661 11662 router->inet6addr_nb.notifier_call = mlxsw_sp_inet6addr_event; 11663 err = register_inet6addr_notifier(&router->inet6addr_nb); 11664 if (err) 11665 goto err_register_inet6addr_notifier; 11666 11667 router->inetaddr_valid_nb.notifier_call = mlxsw_sp_inetaddr_valid_event; 11668 err = register_inetaddr_validator_notifier(&router->inetaddr_valid_nb); 11669 if (err) 11670 goto err_register_inetaddr_valid_notifier; 11671 11672 nb = &router->inet6addr_valid_nb; 11673 nb->notifier_call = mlxsw_sp_inet6addr_valid_event; 11674 err = register_inet6addr_validator_notifier(nb); 11675 if (err) 11676 goto err_register_inet6addr_valid_notifier; 11677 11678 mlxsw_sp->router->netevent_nb.notifier_call = 11679 mlxsw_sp_router_netevent_event; 11680 err = register_netevent_notifier(&mlxsw_sp->router->netevent_nb); 11681 if (err) 11682 goto err_register_netevent_notifier; 11683 11684 mlxsw_sp->router->netdevice_nb.notifier_call = 11685 mlxsw_sp_router_netdevice_event; 11686 err = register_netdevice_notifier_net(mlxsw_sp_net(mlxsw_sp), 11687 &mlxsw_sp->router->netdevice_nb); 11688 if (err) 11689 goto err_register_netdev_notifier; 11690 11691 mlxsw_sp->router->nexthop_nb.notifier_call = 11692 mlxsw_sp_nexthop_obj_event; 11693 err = register_nexthop_notifier(mlxsw_sp_net(mlxsw_sp), 11694 &mlxsw_sp->router->nexthop_nb, 11695 extack); 11696 if (err) 11697 goto err_register_nexthop_notifier; 11698 11699 mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event; 11700 err = register_fib_notifier(mlxsw_sp_net(mlxsw_sp), 11701 &mlxsw_sp->router->fib_nb, 11702 mlxsw_sp_router_fib_dump_flush, extack); 11703 if (err) 11704 goto err_register_fib_notifier; 11705 11706 return 0; 11707 11708 err_register_fib_notifier: 11709 unregister_nexthop_notifier(mlxsw_sp_net(mlxsw_sp), 11710 &mlxsw_sp->router->nexthop_nb); 11711 err_register_nexthop_notifier: 11712 unregister_netdevice_notifier_net(mlxsw_sp_net(mlxsw_sp), 11713 &router->netdevice_nb); 11714 err_register_netdev_notifier: 11715 unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb); 11716 err_register_netevent_notifier: 11717 unregister_inet6addr_validator_notifier(&router->inet6addr_valid_nb); 11718 err_register_inet6addr_valid_notifier: 11719 unregister_inetaddr_validator_notifier(&router->inetaddr_valid_nb); 11720 err_register_inetaddr_valid_notifier: 11721 unregister_inet6addr_notifier(&router->inet6addr_nb); 11722 err_register_inet6addr_notifier: 11723 unregister_inetaddr_notifier(&router->inetaddr_nb); 11724 err_register_inetaddr_notifier: 11725 mlxsw_core_flush_owq(); 11726 err_dscp_init: 11727 mlxsw_sp_mp_hash_fini(mlxsw_sp); 11728 err_mp_hash_init: 11729 mlxsw_sp_neigh_fini(mlxsw_sp); 11730 err_neigh_init: 11731 mlxsw_sp_lb_rif_fini(mlxsw_sp); 11732 err_lb_rif_init: 11733 mlxsw_sp_vrs_fini(mlxsw_sp); 11734 err_vrs_init: 11735 mlxsw_sp_mr_fini(mlxsw_sp); 11736 err_mr_init: 11737 mlxsw_sp_lpm_fini(mlxsw_sp); 11738 err_lpm_init: 11739 rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht); 11740 err_nexthop_group_ht_init: 11741 rhashtable_destroy(&mlxsw_sp->router->nexthop_ht); 11742 err_nexthop_ht_init: 11743 mlxsw_sp_rifs_fini(mlxsw_sp); 11744 err_rifs_init: 11745 rhashtable_destroy(&mlxsw_sp->router->crif_ht); 11746 err_crif_ht_init: 11747 mlxsw_sp_ipips_fini(mlxsw_sp); 11748 err_ipips_init: 11749 __mlxsw_sp_router_fini(mlxsw_sp); 11750 err_router_init: 11751 cancel_delayed_work_sync(&mlxsw_sp->router->nh_grp_activity_dw); 11752 err_router_ops_init: 11753 mutex_destroy(&mlxsw_sp->router->lock); 11754 kfree(mlxsw_sp->router); 11755 return err; 11756 } 11757 11758 void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) 11759 { 11760 struct mlxsw_sp_router *router = mlxsw_sp->router; 11761 11762 unregister_fib_notifier(mlxsw_sp_net(mlxsw_sp), &router->fib_nb); 11763 unregister_nexthop_notifier(mlxsw_sp_net(mlxsw_sp), 11764 &router->nexthop_nb); 11765 unregister_netdevice_notifier_net(mlxsw_sp_net(mlxsw_sp), 11766 &router->netdevice_nb); 11767 unregister_netevent_notifier(&router->netevent_nb); 11768 unregister_inet6addr_validator_notifier(&router->inet6addr_valid_nb); 11769 unregister_inetaddr_validator_notifier(&router->inetaddr_valid_nb); 11770 unregister_inet6addr_notifier(&router->inet6addr_nb); 11771 unregister_inetaddr_notifier(&router->inetaddr_nb); 11772 mlxsw_core_flush_owq(); 11773 mlxsw_sp_mp_hash_fini(mlxsw_sp); 11774 mlxsw_sp_neigh_fini(mlxsw_sp); 11775 mlxsw_sp_lb_rif_fini(mlxsw_sp); 11776 mlxsw_sp_vrs_fini(mlxsw_sp); 11777 mlxsw_sp_mr_fini(mlxsw_sp); 11778 mlxsw_sp_lpm_fini(mlxsw_sp); 11779 rhashtable_destroy(&router->nexthop_group_ht); 11780 rhashtable_destroy(&router->nexthop_ht); 11781 mlxsw_sp_rifs_fini(mlxsw_sp); 11782 rhashtable_destroy(&mlxsw_sp->router->crif_ht); 11783 mlxsw_sp_ipips_fini(mlxsw_sp); 11784 __mlxsw_sp_router_fini(mlxsw_sp); 11785 cancel_delayed_work_sync(&router->nh_grp_activity_dw); 11786 mutex_destroy(&router->lock); 11787 kfree(router); 11788 } 11789