1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Linux ethernet bridge 4 * 5 * Authors: 6 * Lennert Buytenhek <buytenh@gnu.org> 7 */ 8 9 #ifndef _BR_PRIVATE_H 10 #define _BR_PRIVATE_H 11 12 #include <linux/netdevice.h> 13 #include <linux/if_bridge.h> 14 #include <linux/netpoll.h> 15 #include <linux/u64_stats_sync.h> 16 #include <net/route.h> 17 #include <net/ip6_fib.h> 18 #include <linux/if_vlan.h> 19 #include <linux/rhashtable.h> 20 #include <linux/refcount.h> 21 22 #define BR_HASH_BITS 8 23 #define BR_HASH_SIZE (1 << BR_HASH_BITS) 24 25 #define BR_HOLD_TIME (1*HZ) 26 27 #define BR_PORT_BITS 10 28 #define BR_MAX_PORTS (1<<BR_PORT_BITS) 29 30 #define BR_MULTICAST_DEFAULT_HASH_MAX 4096 31 32 #define BR_HWDOM_MAX BITS_PER_LONG 33 34 #define BR_VERSION "2.3" 35 36 /* Control of forwarding link local multicast */ 37 #define BR_GROUPFWD_DEFAULT 0 38 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */ 39 enum { 40 BR_GROUPFWD_STP = BIT(0), 41 BR_GROUPFWD_MACPAUSE = BIT(1), 42 BR_GROUPFWD_LACP = BIT(2), 43 }; 44 45 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \ 46 BR_GROUPFWD_LACP) 47 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */ 48 #define BR_GROUPFWD_8021AD 0xB801u 49 50 /* Path to usermode spanning tree program */ 51 #define BR_STP_PROG "/sbin/bridge-stp" 52 53 #define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT) 54 55 typedef struct bridge_id bridge_id; 56 typedef struct mac_addr mac_addr; 57 typedef __u16 port_id; 58 59 struct bridge_id { 60 unsigned char prio[2]; 61 unsigned char addr[ETH_ALEN]; 62 }; 63 64 struct mac_addr { 65 unsigned char addr[ETH_ALEN]; 66 }; 67 68 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 69 /* our own querier */ 70 struct bridge_mcast_own_query { 71 struct timer_list timer; 72 u32 startup_sent; 73 }; 74 75 /* other querier */ 76 struct bridge_mcast_other_query { 77 struct timer_list timer; 78 unsigned long delay_time; 79 }; 80 81 /* selected querier */ 82 struct bridge_mcast_querier { 83 struct br_ip addr; 84 int port_ifidx; 85 seqcount_spinlock_t seq; 86 }; 87 88 /* IGMP/MLD statistics */ 89 struct bridge_mcast_stats { 90 struct br_mcast_stats mstats; 91 struct u64_stats_sync syncp; 92 }; 93 #endif 94 95 /* net_bridge_mcast_port must be always defined due to forwarding stubs */ 96 struct net_bridge_mcast_port { 97 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 98 struct net_bridge_port *port; 99 struct net_bridge_vlan *vlan; 100 101 struct bridge_mcast_own_query ip4_own_query; 102 struct timer_list ip4_mc_router_timer; 103 struct hlist_node ip4_rlist; 104 #if IS_ENABLED(CONFIG_IPV6) 105 struct bridge_mcast_own_query ip6_own_query; 106 struct timer_list ip6_mc_router_timer; 107 struct hlist_node ip6_rlist; 108 #endif /* IS_ENABLED(CONFIG_IPV6) */ 109 unsigned char multicast_router; 110 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ 111 }; 112 113 /* net_bridge_mcast must be always defined due to forwarding stubs */ 114 struct net_bridge_mcast { 115 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 116 struct net_bridge *br; 117 struct net_bridge_vlan *vlan; 118 119 u32 multicast_last_member_count; 120 u32 multicast_startup_query_count; 121 122 u8 multicast_querier; 123 u8 multicast_igmp_version; 124 u8 multicast_router; 125 #if IS_ENABLED(CONFIG_IPV6) 126 u8 multicast_mld_version; 127 #endif 128 unsigned long multicast_last_member_interval; 129 unsigned long multicast_membership_interval; 130 unsigned long multicast_querier_interval; 131 unsigned long multicast_query_interval; 132 unsigned long multicast_query_response_interval; 133 unsigned long multicast_startup_query_interval; 134 struct hlist_head ip4_mc_router_list; 135 struct timer_list ip4_mc_router_timer; 136 struct bridge_mcast_other_query ip4_other_query; 137 struct bridge_mcast_own_query ip4_own_query; 138 struct bridge_mcast_querier ip4_querier; 139 #if IS_ENABLED(CONFIG_IPV6) 140 struct hlist_head ip6_mc_router_list; 141 struct timer_list ip6_mc_router_timer; 142 struct bridge_mcast_other_query ip6_other_query; 143 struct bridge_mcast_own_query ip6_own_query; 144 struct bridge_mcast_querier ip6_querier; 145 #endif /* IS_ENABLED(CONFIG_IPV6) */ 146 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */ 147 }; 148 149 struct br_tunnel_info { 150 __be64 tunnel_id; 151 struct metadata_dst __rcu *tunnel_dst; 152 }; 153 154 /* private vlan flags */ 155 enum { 156 BR_VLFLAG_PER_PORT_STATS = BIT(0), 157 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1), 158 BR_VLFLAG_MCAST_ENABLED = BIT(2), 159 BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3), 160 }; 161 162 /** 163 * struct net_bridge_vlan - per-vlan entry 164 * 165 * @vnode: rhashtable member 166 * @vid: VLAN id 167 * @flags: bridge vlan flags 168 * @priv_flags: private (in-kernel) bridge vlan flags 169 * @state: STP state (e.g. blocking, learning, forwarding) 170 * @stats: per-cpu VLAN statistics 171 * @br: if MASTER flag set, this points to a bridge struct 172 * @port: if MASTER flag unset, this points to a port struct 173 * @refcnt: if MASTER flag set, this is bumped for each port referencing it 174 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context 175 * for this VLAN entry 176 * @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context 177 * @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast 178 * context 179 * @vlist: sorted list of VLAN entries 180 * @rcu: used for entry destruction 181 * 182 * This structure is shared between the global per-VLAN entries contained in 183 * the bridge rhashtable and the local per-port per-VLAN entries contained in 184 * the port's rhashtable. The union entries should be interpreted depending on 185 * the entry flags that are set. 186 */ 187 struct net_bridge_vlan { 188 struct rhash_head vnode; 189 struct rhash_head tnode; 190 u16 vid; 191 u16 flags; 192 u16 priv_flags; 193 u8 state; 194 struct pcpu_sw_netstats __percpu *stats; 195 union { 196 struct net_bridge *br; 197 struct net_bridge_port *port; 198 }; 199 union { 200 refcount_t refcnt; 201 struct net_bridge_vlan *brvlan; 202 }; 203 204 struct br_tunnel_info tinfo; 205 206 union { 207 struct net_bridge_mcast br_mcast_ctx; 208 struct net_bridge_mcast_port port_mcast_ctx; 209 }; 210 211 struct list_head vlist; 212 213 struct rcu_head rcu; 214 }; 215 216 /** 217 * struct net_bridge_vlan_group 218 * 219 * @vlan_hash: VLAN entry rhashtable 220 * @vlan_list: sorted VLAN entry list 221 * @num_vlans: number of total VLAN entries 222 * @pvid: PVID VLAN id 223 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking) 224 * 225 * IMPORTANT: Be careful when checking if there're VLAN entries using list 226 * primitives because the bridge can have entries in its list which 227 * are just for global context but not for filtering, i.e. they have 228 * the master flag set but not the brentry flag. If you have to check 229 * if there're "real" entries in the bridge please test @num_vlans 230 */ 231 struct net_bridge_vlan_group { 232 struct rhashtable vlan_hash; 233 struct rhashtable tunnel_hash; 234 struct list_head vlan_list; 235 u16 num_vlans; 236 u16 pvid; 237 u8 pvid_state; 238 }; 239 240 /* bridge fdb flags */ 241 enum { 242 BR_FDB_LOCAL, 243 BR_FDB_STATIC, 244 BR_FDB_STICKY, 245 BR_FDB_ADDED_BY_USER, 246 BR_FDB_ADDED_BY_EXT_LEARN, 247 BR_FDB_OFFLOADED, 248 BR_FDB_NOTIFY, 249 BR_FDB_NOTIFY_INACTIVE 250 }; 251 252 struct net_bridge_fdb_key { 253 mac_addr addr; 254 u16 vlan_id; 255 }; 256 257 struct net_bridge_fdb_entry { 258 struct rhash_head rhnode; 259 struct net_bridge_port *dst; 260 261 struct net_bridge_fdb_key key; 262 struct hlist_node fdb_node; 263 unsigned long flags; 264 265 /* write-heavy members should not affect lookups */ 266 unsigned long updated ____cacheline_aligned_in_smp; 267 unsigned long used; 268 269 struct rcu_head rcu; 270 }; 271 272 #define MDB_PG_FLAGS_PERMANENT BIT(0) 273 #define MDB_PG_FLAGS_OFFLOAD BIT(1) 274 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2) 275 #define MDB_PG_FLAGS_STAR_EXCL BIT(3) 276 #define MDB_PG_FLAGS_BLOCKED BIT(4) 277 278 #define PG_SRC_ENT_LIMIT 32 279 280 #define BR_SGRP_F_DELETE BIT(0) 281 #define BR_SGRP_F_SEND BIT(1) 282 #define BR_SGRP_F_INSTALLED BIT(2) 283 284 struct net_bridge_mcast_gc { 285 struct hlist_node gc_node; 286 void (*destroy)(struct net_bridge_mcast_gc *gc); 287 }; 288 289 struct net_bridge_group_src { 290 struct hlist_node node; 291 292 struct br_ip addr; 293 struct net_bridge_port_group *pg; 294 u8 flags; 295 u8 src_query_rexmit_cnt; 296 struct timer_list timer; 297 298 struct net_bridge *br; 299 struct net_bridge_mcast_gc mcast_gc; 300 struct rcu_head rcu; 301 }; 302 303 struct net_bridge_port_group_sg_key { 304 struct net_bridge_port *port; 305 struct br_ip addr; 306 }; 307 308 struct net_bridge_port_group { 309 struct net_bridge_port_group __rcu *next; 310 struct net_bridge_port_group_sg_key key; 311 unsigned char eth_addr[ETH_ALEN] __aligned(2); 312 unsigned char flags; 313 unsigned char filter_mode; 314 unsigned char grp_query_rexmit_cnt; 315 unsigned char rt_protocol; 316 317 struct hlist_head src_list; 318 unsigned int src_ents; 319 struct timer_list timer; 320 struct timer_list rexmit_timer; 321 struct hlist_node mglist; 322 struct rb_root eht_set_tree; 323 struct rb_root eht_host_tree; 324 325 struct rhash_head rhnode; 326 struct net_bridge_mcast_gc mcast_gc; 327 struct rcu_head rcu; 328 }; 329 330 struct net_bridge_mdb_entry { 331 struct rhash_head rhnode; 332 struct net_bridge *br; 333 struct net_bridge_port_group __rcu *ports; 334 struct br_ip addr; 335 bool host_joined; 336 337 struct timer_list timer; 338 struct hlist_node mdb_node; 339 340 struct net_bridge_mcast_gc mcast_gc; 341 struct rcu_head rcu; 342 }; 343 344 struct net_bridge_port { 345 struct net_bridge *br; 346 struct net_device *dev; 347 struct list_head list; 348 349 unsigned long flags; 350 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 351 struct net_bridge_vlan_group __rcu *vlgrp; 352 #endif 353 struct net_bridge_port __rcu *backup_port; 354 355 /* STP */ 356 u8 priority; 357 u8 state; 358 u16 port_no; 359 unsigned char topology_change_ack; 360 unsigned char config_pending; 361 port_id port_id; 362 port_id designated_port; 363 bridge_id designated_root; 364 bridge_id designated_bridge; 365 u32 path_cost; 366 u32 designated_cost; 367 unsigned long designated_age; 368 369 struct timer_list forward_delay_timer; 370 struct timer_list hold_timer; 371 struct timer_list message_age_timer; 372 struct kobject kobj; 373 struct rcu_head rcu; 374 375 struct net_bridge_mcast_port multicast_ctx; 376 377 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 378 struct bridge_mcast_stats __percpu *mcast_stats; 379 380 u32 multicast_eht_hosts_limit; 381 u32 multicast_eht_hosts_cnt; 382 struct hlist_head mglist; 383 #endif 384 385 #ifdef CONFIG_SYSFS 386 char sysfs_name[IFNAMSIZ]; 387 #endif 388 389 #ifdef CONFIG_NET_POLL_CONTROLLER 390 struct netpoll *np; 391 #endif 392 #ifdef CONFIG_NET_SWITCHDEV 393 /* Identifier used to group ports that share the same switchdev 394 * hardware domain. 395 */ 396 int hwdom; 397 int offload_count; 398 struct netdev_phys_item_id ppid; 399 #endif 400 u16 group_fwd_mask; 401 u16 backup_redirected_cnt; 402 403 struct bridge_stp_xstats stp_xstats; 404 }; 405 406 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj) 407 408 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK) 409 #define br_promisc_port(p) ((p)->flags & BR_PROMISC) 410 411 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) 412 { 413 return rcu_dereference(dev->rx_handler_data); 414 } 415 416 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev) 417 { 418 return netif_is_bridge_port(dev) ? 419 rtnl_dereference(dev->rx_handler_data) : NULL; 420 } 421 422 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev) 423 { 424 return netif_is_bridge_port(dev) ? 425 rcu_dereference_rtnl(dev->rx_handler_data) : NULL; 426 } 427 428 enum net_bridge_opts { 429 BROPT_VLAN_ENABLED, 430 BROPT_VLAN_STATS_ENABLED, 431 BROPT_NF_CALL_IPTABLES, 432 BROPT_NF_CALL_IP6TABLES, 433 BROPT_NF_CALL_ARPTABLES, 434 BROPT_GROUP_ADDR_SET, 435 BROPT_MULTICAST_ENABLED, 436 BROPT_MULTICAST_QUERY_USE_IFADDR, 437 BROPT_MULTICAST_STATS_ENABLED, 438 BROPT_HAS_IPV6_ADDR, 439 BROPT_NEIGH_SUPPRESS_ENABLED, 440 BROPT_MTU_SET_BY_USER, 441 BROPT_VLAN_STATS_PER_PORT, 442 BROPT_NO_LL_LEARN, 443 BROPT_VLAN_BRIDGE_BINDING, 444 BROPT_MCAST_VLAN_SNOOPING_ENABLED, 445 }; 446 447 struct net_bridge { 448 spinlock_t lock; 449 spinlock_t hash_lock; 450 struct hlist_head frame_type_list; 451 struct net_device *dev; 452 unsigned long options; 453 /* These fields are accessed on each packet */ 454 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 455 __be16 vlan_proto; 456 u16 default_pvid; 457 struct net_bridge_vlan_group __rcu *vlgrp; 458 #endif 459 460 struct rhashtable fdb_hash_tbl; 461 struct list_head port_list; 462 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 463 union { 464 struct rtable fake_rtable; 465 struct rt6_info fake_rt6_info; 466 }; 467 #endif 468 u16 group_fwd_mask; 469 u16 group_fwd_mask_required; 470 471 /* STP */ 472 bridge_id designated_root; 473 bridge_id bridge_id; 474 unsigned char topology_change; 475 unsigned char topology_change_detected; 476 u16 root_port; 477 unsigned long max_age; 478 unsigned long hello_time; 479 unsigned long forward_delay; 480 unsigned long ageing_time; 481 unsigned long bridge_max_age; 482 unsigned long bridge_hello_time; 483 unsigned long bridge_forward_delay; 484 unsigned long bridge_ageing_time; 485 u32 root_path_cost; 486 487 u8 group_addr[ETH_ALEN]; 488 489 enum { 490 BR_NO_STP, /* no spanning tree */ 491 BR_KERNEL_STP, /* old STP in kernel */ 492 BR_USER_STP, /* new RSTP in userspace */ 493 } stp_enabled; 494 495 struct net_bridge_mcast multicast_ctx; 496 497 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 498 struct bridge_mcast_stats __percpu *mcast_stats; 499 500 u32 hash_max; 501 502 spinlock_t multicast_lock; 503 504 struct rhashtable mdb_hash_tbl; 505 struct rhashtable sg_port_tbl; 506 507 struct hlist_head mcast_gc_list; 508 struct hlist_head mdb_list; 509 510 struct work_struct mcast_gc_work; 511 #endif 512 513 struct timer_list hello_timer; 514 struct timer_list tcn_timer; 515 struct timer_list topology_change_timer; 516 struct delayed_work gc_work; 517 struct kobject *ifobj; 518 u32 auto_cnt; 519 520 #ifdef CONFIG_NET_SWITCHDEV 521 /* Counter used to make sure that hardware domains get unique 522 * identifiers in case a bridge spans multiple switchdev instances. 523 */ 524 int last_hwdom; 525 /* Bit mask of hardware domain numbers in use */ 526 unsigned long busy_hwdoms; 527 #endif 528 struct hlist_head fdb_list; 529 530 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 531 struct hlist_head mrp_list; 532 #endif 533 #if IS_ENABLED(CONFIG_BRIDGE_CFM) 534 struct hlist_head mep_list; 535 #endif 536 }; 537 538 struct br_input_skb_cb { 539 struct net_device *brdev; 540 541 u16 frag_max_size; 542 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 543 u8 igmp; 544 u8 mrouters_only:1; 545 #endif 546 u8 proxyarp_replied:1; 547 u8 src_port_isolated:1; 548 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 549 u8 vlan_filtered:1; 550 #endif 551 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE 552 u8 br_netfilter_broute:1; 553 #endif 554 555 #ifdef CONFIG_NET_SWITCHDEV 556 /* Set if TX data plane offloading is used towards at least one 557 * hardware domain. 558 */ 559 u8 tx_fwd_offload:1; 560 /* The switchdev hardware domain from which this packet was received. 561 * If skb->offload_fwd_mark was set, then this packet was already 562 * forwarded by hardware to the other ports in the source hardware 563 * domain, otherwise it wasn't. 564 */ 565 int src_hwdom; 566 /* Bit mask of hardware domains towards this packet has already been 567 * transmitted using the TX data plane offload. 568 */ 569 unsigned long fwd_hwdoms; 570 #endif 571 }; 572 573 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 574 575 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 576 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 577 #else 578 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 579 #endif 580 581 #define br_printk(level, br, format, args...) \ 582 printk(level "%s: " format, (br)->dev->name, ##args) 583 584 #define br_err(__br, format, args...) \ 585 br_printk(KERN_ERR, __br, format, ##args) 586 #define br_warn(__br, format, args...) \ 587 br_printk(KERN_WARNING, __br, format, ##args) 588 #define br_notice(__br, format, args...) \ 589 br_printk(KERN_NOTICE, __br, format, ##args) 590 #define br_info(__br, format, args...) \ 591 br_printk(KERN_INFO, __br, format, ##args) 592 593 #define br_debug(br, format, args...) \ 594 pr_debug("%s: " format, (br)->dev->name, ##args) 595 596 /* called under bridge lock */ 597 static inline int br_is_root_bridge(const struct net_bridge *br) 598 { 599 return !memcmp(&br->bridge_id, &br->designated_root, 8); 600 } 601 602 /* check if a VLAN entry is global */ 603 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v) 604 { 605 return v->flags & BRIDGE_VLAN_INFO_MASTER; 606 } 607 608 /* check if a VLAN entry is used by the bridge */ 609 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v) 610 { 611 return v->flags & BRIDGE_VLAN_INFO_BRENTRY; 612 } 613 614 /* check if we should use the vlan entry, returns false if it's only context */ 615 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v) 616 { 617 if (br_vlan_is_master(v)) { 618 if (br_vlan_is_brentry(v)) 619 return true; 620 else 621 return false; 622 } 623 624 return true; 625 } 626 627 static inline bool nbp_state_should_learn(const struct net_bridge_port *p) 628 { 629 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING; 630 } 631 632 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack) 633 { 634 bool ret = vid > 0 && vid < VLAN_VID_MASK; 635 636 if (!ret) 637 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid"); 638 639 return ret; 640 } 641 642 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur, 643 const struct bridge_vlan_info *last, 644 struct netlink_ext_ack *extack) 645 { 646 /* pvid flag is not allowed in ranges */ 647 if (cur->flags & BRIDGE_VLAN_INFO_PVID) { 648 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range"); 649 return false; 650 } 651 652 /* when cur is the range end, check if: 653 * - it has range start flag 654 * - range ids are invalid (end is equal to or before start) 655 */ 656 if (last) { 657 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { 658 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one"); 659 return false; 660 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) { 661 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing"); 662 return false; 663 } else if (cur->vid <= last->vid) { 664 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id"); 665 return false; 666 } 667 } 668 669 /* check for required range flags */ 670 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 671 BRIDGE_VLAN_INFO_RANGE_END))) { 672 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing"); 673 return false; 674 } 675 676 return true; 677 } 678 679 static inline u8 br_vlan_multicast_router(const struct net_bridge_vlan *v) 680 { 681 u8 mcast_router = MDB_RTR_TYPE_DISABLED; 682 683 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 684 if (!br_vlan_is_master(v)) 685 mcast_router = v->port_mcast_ctx.multicast_router; 686 else 687 mcast_router = v->br_mcast_ctx.multicast_router; 688 #endif 689 690 return mcast_router; 691 } 692 693 static inline int br_afspec_cmd_to_rtm(int cmd) 694 { 695 switch (cmd) { 696 case RTM_SETLINK: 697 return RTM_NEWVLAN; 698 case RTM_DELLINK: 699 return RTM_DELVLAN; 700 } 701 702 return 0; 703 } 704 705 static inline int br_opt_get(const struct net_bridge *br, 706 enum net_bridge_opts opt) 707 { 708 return test_bit(opt, &br->options); 709 } 710 711 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on, 712 struct netlink_ext_ack *extack); 713 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt); 714 int br_boolopt_multi_toggle(struct net_bridge *br, 715 struct br_boolopt_multi *bm, 716 struct netlink_ext_ack *extack); 717 void br_boolopt_multi_get(const struct net_bridge *br, 718 struct br_boolopt_multi *bm); 719 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on); 720 721 /* br_device.c */ 722 void br_dev_setup(struct net_device *dev); 723 void br_dev_delete(struct net_device *dev, struct list_head *list); 724 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 725 #ifdef CONFIG_NET_POLL_CONTROLLER 726 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 727 struct sk_buff *skb) 728 { 729 netpoll_send_skb(p->np, skb); 730 } 731 732 int br_netpoll_enable(struct net_bridge_port *p); 733 void br_netpoll_disable(struct net_bridge_port *p); 734 #else 735 static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 736 struct sk_buff *skb) 737 { 738 } 739 740 static inline int br_netpoll_enable(struct net_bridge_port *p) 741 { 742 return 0; 743 } 744 745 static inline void br_netpoll_disable(struct net_bridge_port *p) 746 { 747 } 748 #endif 749 750 /* br_fdb.c */ 751 int br_fdb_init(void); 752 void br_fdb_fini(void); 753 int br_fdb_hash_init(struct net_bridge *br); 754 void br_fdb_hash_fini(struct net_bridge *br); 755 void br_fdb_flush(struct net_bridge *br); 756 void br_fdb_find_delete_local(struct net_bridge *br, 757 const struct net_bridge_port *p, 758 const unsigned char *addr, u16 vid); 759 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr); 760 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 761 void br_fdb_cleanup(struct work_struct *work); 762 void br_fdb_delete_by_port(struct net_bridge *br, 763 const struct net_bridge_port *p, u16 vid, int do_all); 764 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br, 765 const unsigned char *addr, 766 __u16 vid); 767 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 768 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count, 769 unsigned long off); 770 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source, 771 const unsigned char *addr, u16 vid); 772 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, 773 const unsigned char *addr, u16 vid, unsigned long flags); 774 775 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[], 776 struct net_device *dev, const unsigned char *addr, u16 vid); 777 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev, 778 const unsigned char *addr, u16 vid, u16 nlh_flags, 779 struct netlink_ext_ack *extack); 780 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, 781 struct net_device *dev, struct net_device *fdev, int *idx); 782 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev, 783 const unsigned char *addr, u16 vid, u32 portid, u32 seq, 784 struct netlink_ext_ack *extack); 785 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); 786 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); 787 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, 788 const unsigned char *addr, u16 vid, 789 bool swdev_notify); 790 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, 791 const unsigned char *addr, u16 vid, 792 bool swdev_notify); 793 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p, 794 const unsigned char *addr, u16 vid, bool offloaded); 795 int br_fdb_replay(const struct net_device *br_dev, const void *ctx, bool adding, 796 struct notifier_block *nb); 797 798 /* br_forward.c */ 799 enum br_pkt_type { 800 BR_PKT_UNICAST, 801 BR_PKT_MULTICAST, 802 BR_PKT_BROADCAST 803 }; 804 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb); 805 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, 806 bool local_rcv, bool local_orig); 807 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 808 void br_flood(struct net_bridge *br, struct sk_buff *skb, 809 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig); 810 811 /* return true if both source port and dest port are isolated */ 812 static inline bool br_skb_isolated(const struct net_bridge_port *to, 813 const struct sk_buff *skb) 814 { 815 return BR_INPUT_SKB_CB(skb)->src_port_isolated && 816 (to->flags & BR_ISOLATED); 817 } 818 819 /* br_if.c */ 820 void br_port_carrier_check(struct net_bridge_port *p, bool *notified); 821 int br_add_bridge(struct net *net, const char *name); 822 int br_del_bridge(struct net *net, const char *name); 823 int br_add_if(struct net_bridge *br, struct net_device *dev, 824 struct netlink_ext_ack *extack); 825 int br_del_if(struct net_bridge *br, struct net_device *dev); 826 void br_mtu_auto_adjust(struct net_bridge *br); 827 netdev_features_t br_features_recompute(struct net_bridge *br, 828 netdev_features_t features); 829 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask); 830 void br_manage_promisc(struct net_bridge *br); 831 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev); 832 833 /* br_input.c */ 834 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); 835 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev); 836 837 struct br_frame_type { 838 __be16 type; 839 int (*frame_handler)(struct net_bridge_port *port, 840 struct sk_buff *skb); 841 struct hlist_node list; 842 }; 843 844 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft); 845 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft); 846 847 static inline bool br_rx_handler_check_rcu(const struct net_device *dev) 848 { 849 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev); 850 } 851 852 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev) 853 { 854 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev); 855 } 856 857 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev) 858 { 859 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL; 860 } 861 862 static inline struct net_bridge_port * 863 br_port_get_check_rtnl(const struct net_device *dev) 864 { 865 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL; 866 } 867 868 /* br_ioctl.c */ 869 int br_dev_siocdevprivate(struct net_device *dev, struct ifreq *rq, 870 void __user *data, int cmd); 871 int br_ioctl_stub(struct net *net, struct net_bridge *br, unsigned int cmd, 872 struct ifreq *ifr, void __user *uarg); 873 874 /* br_multicast.c */ 875 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 876 int br_multicast_rcv(struct net_bridge_mcast **brmctx, 877 struct net_bridge_mcast_port **pmctx, 878 struct net_bridge_vlan *vlan, 879 struct sk_buff *skb, u16 vid); 880 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, 881 struct sk_buff *skb, u16 vid); 882 int br_multicast_add_port(struct net_bridge_port *port); 883 void br_multicast_del_port(struct net_bridge_port *port); 884 void br_multicast_enable_port(struct net_bridge_port *port); 885 void br_multicast_disable_port(struct net_bridge_port *port); 886 void br_multicast_init(struct net_bridge *br); 887 void br_multicast_join_snoopers(struct net_bridge *br); 888 void br_multicast_leave_snoopers(struct net_bridge *br); 889 void br_multicast_open(struct net_bridge *br); 890 void br_multicast_stop(struct net_bridge *br); 891 void br_multicast_dev_del(struct net_bridge *br); 892 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb, 893 struct net_bridge_mcast *brmctx, 894 bool local_rcv, bool local_orig); 895 int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val); 896 int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx, 897 unsigned long val); 898 int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router); 899 int br_multicast_toggle(struct net_bridge *br, unsigned long val, 900 struct netlink_ext_ack *extack); 901 int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val); 902 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 903 int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx, 904 unsigned long val); 905 #if IS_ENABLED(CONFIG_IPV6) 906 int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx, 907 unsigned long val); 908 #endif 909 struct net_bridge_mdb_entry * 910 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst); 911 struct net_bridge_mdb_entry * 912 br_multicast_new_group(struct net_bridge *br, struct br_ip *group); 913 struct net_bridge_port_group * 914 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group, 915 struct net_bridge_port_group __rcu *next, 916 unsigned char flags, const unsigned char *src, 917 u8 filter_mode, u8 rt_protocol); 918 int br_mdb_hash_init(struct net_bridge *br); 919 void br_mdb_hash_fini(struct net_bridge *br); 920 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp, 921 struct net_bridge_port_group *pg, int type); 922 void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx, 923 int type); 924 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp, 925 struct net_bridge_port_group *pg, 926 struct net_bridge_port_group __rcu **pp); 927 void br_multicast_count(struct net_bridge *br, 928 const struct net_bridge_port *p, 929 const struct sk_buff *skb, u8 type, u8 dir); 930 int br_multicast_init_stats(struct net_bridge *br); 931 void br_multicast_uninit_stats(struct net_bridge *br); 932 void br_multicast_get_stats(const struct net_bridge *br, 933 const struct net_bridge_port *p, 934 struct br_mcast_stats *dest); 935 void br_mdb_init(void); 936 void br_mdb_uninit(void); 937 void br_multicast_host_join(const struct net_bridge_mcast *brmctx, 938 struct net_bridge_mdb_entry *mp, bool notify); 939 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify); 940 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg, 941 u8 filter_mode); 942 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp, 943 struct net_bridge_port_group *sg); 944 struct net_bridge_group_src * 945 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip); 946 void br_multicast_del_group_src(struct net_bridge_group_src *src, 947 bool fastleave); 948 void br_multicast_ctx_init(struct net_bridge *br, 949 struct net_bridge_vlan *vlan, 950 struct net_bridge_mcast *brmctx); 951 void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx); 952 void br_multicast_port_ctx_init(struct net_bridge_port *port, 953 struct net_bridge_vlan *vlan, 954 struct net_bridge_mcast_port *pmctx); 955 void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx); 956 void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on); 957 int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on, 958 struct netlink_ext_ack *extack); 959 bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on); 960 961 int br_mdb_replay(struct net_device *br_dev, struct net_device *dev, 962 const void *ctx, bool adding, struct notifier_block *nb, 963 struct netlink_ext_ack *extack); 964 int br_rports_fill_info(struct sk_buff *skb, 965 const struct net_bridge_mcast *brmctx); 966 int br_multicast_dump_querier_state(struct sk_buff *skb, 967 const struct net_bridge_mcast *brmctx, 968 int nest_attr); 969 size_t br_multicast_querier_state_size(void); 970 size_t br_rports_size(const struct net_bridge_mcast *brmctx); 971 972 static inline bool br_group_is_l2(const struct br_ip *group) 973 { 974 return group->proto == 0; 975 } 976 977 #define mlock_dereference(X, br) \ 978 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) 979 980 static inline struct hlist_node * 981 br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx, 982 struct sk_buff *skb) 983 { 984 #if IS_ENABLED(CONFIG_IPV6) 985 if (skb->protocol == htons(ETH_P_IPV6)) 986 return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list)); 987 #endif 988 return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list)); 989 } 990 991 static inline struct net_bridge_port * 992 br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb) 993 { 994 struct net_bridge_mcast_port *mctx; 995 996 #if IS_ENABLED(CONFIG_IPV6) 997 if (skb->protocol == htons(ETH_P_IPV6)) 998 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, 999 ip6_rlist); 1000 else 1001 #endif 1002 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port, 1003 ip4_rlist); 1004 1005 if (mctx) 1006 return mctx->port; 1007 else 1008 return NULL; 1009 } 1010 1011 static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx) 1012 { 1013 return timer_pending(&brmctx->ip4_mc_router_timer); 1014 } 1015 1016 static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx) 1017 { 1018 #if IS_ENABLED(CONFIG_IPV6) 1019 return timer_pending(&brmctx->ip6_mc_router_timer); 1020 #else 1021 return false; 1022 #endif 1023 } 1024 1025 static inline bool 1026 br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb) 1027 { 1028 switch (brmctx->multicast_router) { 1029 case MDB_RTR_TYPE_PERM: 1030 return true; 1031 case MDB_RTR_TYPE_TEMP_QUERY: 1032 if (skb) { 1033 if (skb->protocol == htons(ETH_P_IP)) 1034 return br_ip4_multicast_is_router(brmctx); 1035 else if (skb->protocol == htons(ETH_P_IPV6)) 1036 return br_ip6_multicast_is_router(brmctx); 1037 } else { 1038 return br_ip4_multicast_is_router(brmctx) || 1039 br_ip6_multicast_is_router(brmctx); 1040 } 1041 fallthrough; 1042 default: 1043 return false; 1044 } 1045 } 1046 1047 static inline bool 1048 __br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1049 struct bridge_mcast_other_query *querier, 1050 const bool is_ipv6) 1051 { 1052 bool own_querier_enabled; 1053 1054 if (brmctx->multicast_querier) { 1055 if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR)) 1056 own_querier_enabled = false; 1057 else 1058 own_querier_enabled = true; 1059 } else { 1060 own_querier_enabled = false; 1061 } 1062 1063 return time_is_before_jiffies(querier->delay_time) && 1064 (own_querier_enabled || timer_pending(&querier->timer)); 1065 } 1066 1067 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1068 struct ethhdr *eth, 1069 const struct net_bridge_mdb_entry *mdb) 1070 { 1071 switch (eth->h_proto) { 1072 case (htons(ETH_P_IP)): 1073 return __br_multicast_querier_exists(brmctx, 1074 &brmctx->ip4_other_query, false); 1075 #if IS_ENABLED(CONFIG_IPV6) 1076 case (htons(ETH_P_IPV6)): 1077 return __br_multicast_querier_exists(brmctx, 1078 &brmctx->ip6_other_query, true); 1079 #endif 1080 default: 1081 return !!mdb && br_group_is_l2(&mdb->addr); 1082 } 1083 } 1084 1085 static inline bool br_multicast_is_star_g(const struct br_ip *ip) 1086 { 1087 switch (ip->proto) { 1088 case htons(ETH_P_IP): 1089 return ipv4_is_zeronet(ip->src.ip4); 1090 #if IS_ENABLED(CONFIG_IPV6) 1091 case htons(ETH_P_IPV6): 1092 return ipv6_addr_any(&ip->src.ip6); 1093 #endif 1094 default: 1095 return false; 1096 } 1097 } 1098 1099 static inline bool 1100 br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx, 1101 __be16 proto) 1102 { 1103 switch (proto) { 1104 case htons(ETH_P_IP): 1105 return !!(brmctx->multicast_igmp_version == 3); 1106 #if IS_ENABLED(CONFIG_IPV6) 1107 case htons(ETH_P_IPV6): 1108 return !!(brmctx->multicast_mld_version == 2); 1109 #endif 1110 default: 1111 return false; 1112 } 1113 } 1114 1115 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 1116 { 1117 return BR_INPUT_SKB_CB(skb)->igmp; 1118 } 1119 1120 static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx) 1121 { 1122 return brmctx->multicast_last_member_interval * 1123 brmctx->multicast_last_member_count; 1124 } 1125 1126 static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx) 1127 { 1128 return brmctx->multicast_membership_interval; 1129 } 1130 1131 static inline bool 1132 br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx) 1133 { 1134 return !!brmctx->vlan; 1135 } 1136 1137 static inline bool 1138 br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx) 1139 { 1140 return !!pmctx->vlan; 1141 } 1142 1143 static inline struct net_bridge_mcast * 1144 br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx) 1145 { 1146 if (!br_multicast_port_ctx_is_vlan(pmctx)) 1147 return &pmctx->port->br->multicast_ctx; 1148 else 1149 return &pmctx->vlan->brvlan->br_mcast_ctx; 1150 } 1151 1152 static inline bool 1153 br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx) 1154 { 1155 return br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) && 1156 br_multicast_ctx_is_vlan(brmctx) && 1157 !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED); 1158 } 1159 1160 static inline bool 1161 br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx) 1162 { 1163 return br_multicast_ctx_is_vlan(brmctx) && 1164 !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); 1165 } 1166 1167 static inline bool 1168 br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx) 1169 { 1170 return br_multicast_port_ctx_is_vlan(pmctx) && 1171 !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED); 1172 } 1173 1174 static inline bool 1175 br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx) 1176 { 1177 return pmctx->port->state == BR_STATE_DISABLED || 1178 (br_multicast_port_ctx_is_vlan(pmctx) && 1179 (br_multicast_port_ctx_vlan_disabled(pmctx) || 1180 pmctx->vlan->state == BR_STATE_DISABLED)); 1181 } 1182 1183 static inline bool 1184 br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx) 1185 { 1186 return br_multicast_port_ctx_state_disabled(pmctx) || 1187 pmctx->port->state == BR_STATE_BLOCKING || 1188 (br_multicast_port_ctx_is_vlan(pmctx) && 1189 pmctx->vlan->state == BR_STATE_BLOCKING); 1190 } 1191 1192 static inline bool 1193 br_rports_have_mc_router(const struct net_bridge_mcast *brmctx) 1194 { 1195 #if IS_ENABLED(CONFIG_IPV6) 1196 return !hlist_empty(&brmctx->ip4_mc_router_list) || 1197 !hlist_empty(&brmctx->ip6_mc_router_list); 1198 #else 1199 return !hlist_empty(&brmctx->ip4_mc_router_list); 1200 #endif 1201 } 1202 1203 static inline bool 1204 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1, 1205 const struct net_bridge_mcast *brmctx2) 1206 { 1207 return brmctx1->multicast_igmp_version == 1208 brmctx2->multicast_igmp_version && 1209 brmctx1->multicast_last_member_count == 1210 brmctx2->multicast_last_member_count && 1211 brmctx1->multicast_startup_query_count == 1212 brmctx2->multicast_startup_query_count && 1213 brmctx1->multicast_last_member_interval == 1214 brmctx2->multicast_last_member_interval && 1215 brmctx1->multicast_membership_interval == 1216 brmctx2->multicast_membership_interval && 1217 brmctx1->multicast_querier_interval == 1218 brmctx2->multicast_querier_interval && 1219 brmctx1->multicast_query_interval == 1220 brmctx2->multicast_query_interval && 1221 brmctx1->multicast_query_response_interval == 1222 brmctx2->multicast_query_response_interval && 1223 brmctx1->multicast_startup_query_interval == 1224 brmctx2->multicast_startup_query_interval && 1225 brmctx1->multicast_querier == brmctx2->multicast_querier && 1226 brmctx1->multicast_router == brmctx2->multicast_router && 1227 !br_rports_have_mc_router(brmctx1) && 1228 !br_rports_have_mc_router(brmctx2) && 1229 #if IS_ENABLED(CONFIG_IPV6) 1230 brmctx1->multicast_mld_version == 1231 brmctx2->multicast_mld_version && 1232 #endif 1233 true; 1234 } 1235 1236 static inline bool 1237 br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast *brmctx) 1238 { 1239 bool vlan_snooping_enabled; 1240 1241 vlan_snooping_enabled = !!br_opt_get(brmctx->br, 1242 BROPT_MCAST_VLAN_SNOOPING_ENABLED); 1243 1244 return !!(vlan_snooping_enabled == br_multicast_ctx_is_vlan(brmctx)); 1245 } 1246 #else 1247 static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx, 1248 struct net_bridge_mcast_port **pmctx, 1249 struct net_bridge_vlan *vlan, 1250 struct sk_buff *skb, 1251 u16 vid) 1252 { 1253 return 0; 1254 } 1255 1256 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx, 1257 struct sk_buff *skb, u16 vid) 1258 { 1259 return NULL; 1260 } 1261 1262 static inline int br_multicast_add_port(struct net_bridge_port *port) 1263 { 1264 return 0; 1265 } 1266 1267 static inline void br_multicast_del_port(struct net_bridge_port *port) 1268 { 1269 } 1270 1271 static inline void br_multicast_enable_port(struct net_bridge_port *port) 1272 { 1273 } 1274 1275 static inline void br_multicast_disable_port(struct net_bridge_port *port) 1276 { 1277 } 1278 1279 static inline void br_multicast_init(struct net_bridge *br) 1280 { 1281 } 1282 1283 static inline void br_multicast_join_snoopers(struct net_bridge *br) 1284 { 1285 } 1286 1287 static inline void br_multicast_leave_snoopers(struct net_bridge *br) 1288 { 1289 } 1290 1291 static inline void br_multicast_open(struct net_bridge *br) 1292 { 1293 } 1294 1295 static inline void br_multicast_stop(struct net_bridge *br) 1296 { 1297 } 1298 1299 static inline void br_multicast_dev_del(struct net_bridge *br) 1300 { 1301 } 1302 1303 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst, 1304 struct sk_buff *skb, 1305 struct net_bridge_mcast *brmctx, 1306 bool local_rcv, bool local_orig) 1307 { 1308 } 1309 1310 static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx, 1311 struct sk_buff *skb) 1312 { 1313 return false; 1314 } 1315 1316 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx, 1317 struct ethhdr *eth, 1318 const struct net_bridge_mdb_entry *mdb) 1319 { 1320 return false; 1321 } 1322 1323 static inline void br_mdb_init(void) 1324 { 1325 } 1326 1327 static inline void br_mdb_uninit(void) 1328 { 1329 } 1330 1331 static inline int br_mdb_hash_init(struct net_bridge *br) 1332 { 1333 return 0; 1334 } 1335 1336 static inline void br_mdb_hash_fini(struct net_bridge *br) 1337 { 1338 } 1339 1340 static inline void br_multicast_count(struct net_bridge *br, 1341 const struct net_bridge_port *p, 1342 const struct sk_buff *skb, 1343 u8 type, u8 dir) 1344 { 1345 } 1346 1347 static inline int br_multicast_init_stats(struct net_bridge *br) 1348 { 1349 return 0; 1350 } 1351 1352 static inline void br_multicast_uninit_stats(struct net_bridge *br) 1353 { 1354 } 1355 1356 static inline int br_multicast_igmp_type(const struct sk_buff *skb) 1357 { 1358 return 0; 1359 } 1360 1361 static inline void br_multicast_ctx_init(struct net_bridge *br, 1362 struct net_bridge_vlan *vlan, 1363 struct net_bridge_mcast *brmctx) 1364 { 1365 } 1366 1367 static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx) 1368 { 1369 } 1370 1371 static inline void br_multicast_port_ctx_init(struct net_bridge_port *port, 1372 struct net_bridge_vlan *vlan, 1373 struct net_bridge_mcast_port *pmctx) 1374 { 1375 } 1376 1377 static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx) 1378 { 1379 } 1380 1381 static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, 1382 bool on) 1383 { 1384 } 1385 1386 static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br, 1387 bool on, 1388 struct netlink_ext_ack *extack) 1389 { 1390 return -EOPNOTSUPP; 1391 } 1392 1393 static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, 1394 bool on) 1395 { 1396 return false; 1397 } 1398 1399 static inline int br_mdb_replay(struct net_device *br_dev, 1400 struct net_device *dev, const void *ctx, 1401 bool adding, struct notifier_block *nb, 1402 struct netlink_ext_ack *extack) 1403 { 1404 return -EOPNOTSUPP; 1405 } 1406 1407 static inline bool 1408 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1, 1409 const struct net_bridge_mcast *brmctx2) 1410 { 1411 return true; 1412 } 1413 #endif 1414 1415 /* br_vlan.c */ 1416 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1417 bool br_allowed_ingress(const struct net_bridge *br, 1418 struct net_bridge_vlan_group *vg, struct sk_buff *skb, 1419 u16 *vid, u8 *state, 1420 struct net_bridge_vlan **vlan); 1421 bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1422 const struct sk_buff *skb); 1423 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid); 1424 struct sk_buff *br_handle_vlan(struct net_bridge *br, 1425 const struct net_bridge_port *port, 1426 struct net_bridge_vlan_group *vg, 1427 struct sk_buff *skb); 1428 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1429 bool *changed, struct netlink_ext_ack *extack); 1430 int br_vlan_delete(struct net_bridge *br, u16 vid); 1431 void br_vlan_flush(struct net_bridge *br); 1432 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid); 1433 void br_recalculate_fwd_mask(struct net_bridge *br); 1434 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, 1435 struct netlink_ext_ack *extack); 1436 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, 1437 struct netlink_ext_ack *extack); 1438 int br_vlan_set_proto(struct net_bridge *br, unsigned long val, 1439 struct netlink_ext_ack *extack); 1440 int br_vlan_set_stats(struct net_bridge *br, unsigned long val); 1441 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val); 1442 int br_vlan_init(struct net_bridge *br); 1443 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, 1444 struct netlink_ext_ack *extack); 1445 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 1446 struct netlink_ext_ack *extack); 1447 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1448 bool *changed, struct netlink_ext_ack *extack); 1449 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); 1450 void nbp_vlan_flush(struct net_bridge_port *port); 1451 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack); 1452 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask); 1453 void br_vlan_get_stats(const struct net_bridge_vlan *v, 1454 struct pcpu_sw_netstats *stats); 1455 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event); 1456 int br_vlan_bridge_event(struct net_device *dev, unsigned long event, 1457 void *ptr); 1458 void br_vlan_rtnl_init(void); 1459 void br_vlan_rtnl_uninit(void); 1460 void br_vlan_notify(const struct net_bridge *br, 1461 const struct net_bridge_port *p, 1462 u16 vid, u16 vid_range, 1463 int cmd); 1464 int br_vlan_replay(struct net_device *br_dev, struct net_device *dev, 1465 const void *ctx, bool adding, struct notifier_block *nb, 1466 struct netlink_ext_ack *extack); 1467 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 1468 const struct net_bridge_vlan *range_end); 1469 1470 void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1471 struct net_device_path_ctx *ctx, 1472 struct net_device_path *path); 1473 int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1474 struct net_bridge_port *dst, 1475 struct net_device_path *path); 1476 1477 static inline struct net_bridge_vlan_group *br_vlan_group( 1478 const struct net_bridge *br) 1479 { 1480 return rtnl_dereference(br->vlgrp); 1481 } 1482 1483 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1484 const struct net_bridge_port *p) 1485 { 1486 return rtnl_dereference(p->vlgrp); 1487 } 1488 1489 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1490 const struct net_bridge *br) 1491 { 1492 return rcu_dereference(br->vlgrp); 1493 } 1494 1495 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1496 const struct net_bridge_port *p) 1497 { 1498 return rcu_dereference(p->vlgrp); 1499 } 1500 1501 /* Since bridge now depends on 8021Q module, but the time bridge sees the 1502 * skb, the vlan tag will always be present if the frame was tagged. 1503 */ 1504 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) 1505 { 1506 int err = 0; 1507 1508 if (skb_vlan_tag_present(skb)) { 1509 *vid = skb_vlan_tag_get_id(skb); 1510 } else { 1511 *vid = 0; 1512 err = -EINVAL; 1513 } 1514 1515 return err; 1516 } 1517 1518 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1519 { 1520 if (!vg) 1521 return 0; 1522 1523 smp_rmb(); 1524 return vg->pvid; 1525 } 1526 1527 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid) 1528 { 1529 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags; 1530 } 1531 #else 1532 static inline bool br_allowed_ingress(const struct net_bridge *br, 1533 struct net_bridge_vlan_group *vg, 1534 struct sk_buff *skb, 1535 u16 *vid, u8 *state, 1536 struct net_bridge_vlan **vlan) 1537 1538 { 1539 *vlan = NULL; 1540 return true; 1541 } 1542 1543 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg, 1544 const struct sk_buff *skb) 1545 { 1546 return true; 1547 } 1548 1549 static inline bool br_should_learn(struct net_bridge_port *p, 1550 struct sk_buff *skb, u16 *vid) 1551 { 1552 return true; 1553 } 1554 1555 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br, 1556 const struct net_bridge_port *port, 1557 struct net_bridge_vlan_group *vg, 1558 struct sk_buff *skb) 1559 { 1560 return skb; 1561 } 1562 1563 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, 1564 bool *changed, struct netlink_ext_ack *extack) 1565 { 1566 *changed = false; 1567 return -EOPNOTSUPP; 1568 } 1569 1570 static inline int br_vlan_delete(struct net_bridge *br, u16 vid) 1571 { 1572 return -EOPNOTSUPP; 1573 } 1574 1575 static inline void br_vlan_flush(struct net_bridge *br) 1576 { 1577 } 1578 1579 static inline void br_recalculate_fwd_mask(struct net_bridge *br) 1580 { 1581 } 1582 1583 static inline int br_vlan_init(struct net_bridge *br) 1584 { 1585 return 0; 1586 } 1587 1588 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1589 bool *changed, struct netlink_ext_ack *extack) 1590 { 1591 *changed = false; 1592 return -EOPNOTSUPP; 1593 } 1594 1595 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1596 { 1597 return -EOPNOTSUPP; 1598 } 1599 1600 static inline void nbp_vlan_flush(struct net_bridge_port *port) 1601 { 1602 } 1603 1604 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, 1605 u16 vid) 1606 { 1607 return NULL; 1608 } 1609 1610 static inline int nbp_vlan_init(struct net_bridge_port *port, 1611 struct netlink_ext_ack *extack) 1612 { 1613 return 0; 1614 } 1615 1616 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag) 1617 { 1618 return 0; 1619 } 1620 1621 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg) 1622 { 1623 return 0; 1624 } 1625 1626 static inline int br_vlan_filter_toggle(struct net_bridge *br, 1627 unsigned long val, 1628 struct netlink_ext_ack *extack) 1629 { 1630 return -EOPNOTSUPP; 1631 } 1632 1633 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p, 1634 u32 filter_mask) 1635 { 1636 return 0; 1637 } 1638 1639 static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1640 struct net_device_path_ctx *ctx, 1641 struct net_device_path *path) 1642 { 1643 } 1644 1645 static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1646 struct net_bridge_port *dst, 1647 struct net_device_path *path) 1648 { 1649 return 0; 1650 } 1651 1652 static inline struct net_bridge_vlan_group *br_vlan_group( 1653 const struct net_bridge *br) 1654 { 1655 return NULL; 1656 } 1657 1658 static inline struct net_bridge_vlan_group *nbp_vlan_group( 1659 const struct net_bridge_port *p) 1660 { 1661 return NULL; 1662 } 1663 1664 static inline struct net_bridge_vlan_group *br_vlan_group_rcu( 1665 const struct net_bridge *br) 1666 { 1667 return NULL; 1668 } 1669 1670 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu( 1671 const struct net_bridge_port *p) 1672 { 1673 return NULL; 1674 } 1675 1676 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v, 1677 struct pcpu_sw_netstats *stats) 1678 { 1679 } 1680 1681 static inline void br_vlan_port_event(struct net_bridge_port *p, 1682 unsigned long event) 1683 { 1684 } 1685 1686 static inline int br_vlan_bridge_event(struct net_device *dev, 1687 unsigned long event, void *ptr) 1688 { 1689 return 0; 1690 } 1691 1692 static inline void br_vlan_rtnl_init(void) 1693 { 1694 } 1695 1696 static inline void br_vlan_rtnl_uninit(void) 1697 { 1698 } 1699 1700 static inline void br_vlan_notify(const struct net_bridge *br, 1701 const struct net_bridge_port *p, 1702 u16 vid, u16 vid_range, 1703 int cmd) 1704 { 1705 } 1706 1707 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 1708 const struct net_bridge_vlan *range_end) 1709 { 1710 return true; 1711 } 1712 1713 static inline int br_vlan_replay(struct net_device *br_dev, 1714 struct net_device *dev, const void *ctx, 1715 bool adding, struct notifier_block *nb, 1716 struct netlink_ext_ack *extack) 1717 { 1718 return -EOPNOTSUPP; 1719 } 1720 #endif 1721 1722 /* br_vlan_options.c */ 1723 #ifdef CONFIG_BRIDGE_VLAN_FILTERING 1724 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr, 1725 const struct net_bridge_vlan *range_end); 1726 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v); 1727 size_t br_vlan_opts_nl_size(void); 1728 int br_vlan_process_options(const struct net_bridge *br, 1729 const struct net_bridge_port *p, 1730 struct net_bridge_vlan *range_start, 1731 struct net_bridge_vlan *range_end, 1732 struct nlattr **tb, 1733 struct netlink_ext_ack *extack); 1734 int br_vlan_rtm_process_global_options(struct net_device *dev, 1735 const struct nlattr *attr, 1736 int cmd, 1737 struct netlink_ext_ack *extack); 1738 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr, 1739 const struct net_bridge_vlan *r_end); 1740 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range, 1741 const struct net_bridge_vlan *v_opts); 1742 1743 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */ 1744 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v) 1745 { 1746 return READ_ONCE(v->state); 1747 } 1748 1749 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state) 1750 { 1751 WRITE_ONCE(v->state, state); 1752 } 1753 1754 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg) 1755 { 1756 return READ_ONCE(vg->pvid_state); 1757 } 1758 1759 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg, 1760 u8 state) 1761 { 1762 WRITE_ONCE(vg->pvid_state, state); 1763 } 1764 1765 /* learn_allow is true at ingress and false at egress */ 1766 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow) 1767 { 1768 switch (state) { 1769 case BR_STATE_LEARNING: 1770 return learn_allow; 1771 case BR_STATE_FORWARDING: 1772 return true; 1773 default: 1774 return false; 1775 } 1776 } 1777 #endif 1778 1779 struct nf_br_ops { 1780 int (*br_dev_xmit_hook)(struct sk_buff *skb); 1781 }; 1782 extern const struct nf_br_ops __rcu *nf_br_ops; 1783 1784 /* br_netfilter.c */ 1785 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) 1786 int br_nf_core_init(void); 1787 void br_nf_core_fini(void); 1788 void br_netfilter_rtable_init(struct net_bridge *); 1789 #else 1790 static inline int br_nf_core_init(void) { return 0; } 1791 static inline void br_nf_core_fini(void) {} 1792 #define br_netfilter_rtable_init(x) 1793 #endif 1794 1795 /* br_stp.c */ 1796 void br_set_state(struct net_bridge_port *p, unsigned int state); 1797 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no); 1798 void br_init_port(struct net_bridge_port *p); 1799 void br_become_designated_port(struct net_bridge_port *p); 1800 1801 void __br_set_forward_delay(struct net_bridge *br, unsigned long t); 1802 int br_set_forward_delay(struct net_bridge *br, unsigned long x); 1803 int br_set_hello_time(struct net_bridge *br, unsigned long x); 1804 int br_set_max_age(struct net_bridge *br, unsigned long x); 1805 int __set_ageing_time(struct net_device *dev, unsigned long t); 1806 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time); 1807 1808 1809 /* br_stp_if.c */ 1810 void br_stp_enable_bridge(struct net_bridge *br); 1811 void br_stp_disable_bridge(struct net_bridge *br); 1812 int br_stp_set_enabled(struct net_bridge *br, unsigned long val, 1813 struct netlink_ext_ack *extack); 1814 void br_stp_enable_port(struct net_bridge_port *p); 1815 void br_stp_disable_port(struct net_bridge_port *p); 1816 bool br_stp_recalculate_bridge_id(struct net_bridge *br); 1817 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 1818 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); 1819 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio); 1820 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost); 1821 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 1822 1823 /* br_stp_bpdu.c */ 1824 struct stp_proto; 1825 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 1826 struct net_device *dev); 1827 1828 /* br_stp_timer.c */ 1829 void br_stp_timer_init(struct net_bridge *br); 1830 void br_stp_port_timer_init(struct net_bridge_port *p); 1831 unsigned long br_timer_value(const struct timer_list *timer); 1832 1833 /* br.c */ 1834 #if IS_ENABLED(CONFIG_ATM_LANE) 1835 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 1836 #endif 1837 1838 /* br_mrp.c */ 1839 #if IS_ENABLED(CONFIG_BRIDGE_MRP) 1840 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, 1841 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); 1842 bool br_mrp_enabled(struct net_bridge *br); 1843 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p); 1844 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br); 1845 #else 1846 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, 1847 struct nlattr *attr, int cmd, 1848 struct netlink_ext_ack *extack) 1849 { 1850 return -EOPNOTSUPP; 1851 } 1852 1853 static inline bool br_mrp_enabled(struct net_bridge *br) 1854 { 1855 return false; 1856 } 1857 1858 static inline void br_mrp_port_del(struct net_bridge *br, 1859 struct net_bridge_port *p) 1860 { 1861 } 1862 1863 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) 1864 { 1865 return 0; 1866 } 1867 1868 #endif 1869 1870 /* br_cfm.c */ 1871 #if IS_ENABLED(CONFIG_BRIDGE_CFM) 1872 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, 1873 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); 1874 bool br_cfm_created(struct net_bridge *br); 1875 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); 1876 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); 1877 int br_cfm_status_fill_info(struct sk_buff *skb, 1878 struct net_bridge *br, 1879 bool getlink); 1880 int br_cfm_mep_count(struct net_bridge *br, u32 *count); 1881 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count); 1882 #else 1883 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, 1884 struct nlattr *attr, int cmd, 1885 struct netlink_ext_ack *extack) 1886 { 1887 return -EOPNOTSUPP; 1888 } 1889 1890 static inline bool br_cfm_created(struct net_bridge *br) 1891 { 1892 return false; 1893 } 1894 1895 static inline void br_cfm_port_del(struct net_bridge *br, 1896 struct net_bridge_port *p) 1897 { 1898 } 1899 1900 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) 1901 { 1902 return -EOPNOTSUPP; 1903 } 1904 1905 static inline int br_cfm_status_fill_info(struct sk_buff *skb, 1906 struct net_bridge *br, 1907 bool getlink) 1908 { 1909 return -EOPNOTSUPP; 1910 } 1911 1912 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count) 1913 { 1914 return -EOPNOTSUPP; 1915 } 1916 1917 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count) 1918 { 1919 return -EOPNOTSUPP; 1920 } 1921 #endif 1922 1923 /* br_netlink.c */ 1924 extern struct rtnl_link_ops br_link_ops; 1925 int br_netlink_init(void); 1926 void br_netlink_fini(void); 1927 void br_ifinfo_notify(int event, const struct net_bridge *br, 1928 const struct net_bridge_port *port); 1929 void br_info_notify(int event, const struct net_bridge *br, 1930 const struct net_bridge_port *port, u32 filter); 1931 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags, 1932 struct netlink_ext_ack *extack); 1933 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags); 1934 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, 1935 u32 filter_mask, int nlflags); 1936 int br_process_vlan_info(struct net_bridge *br, 1937 struct net_bridge_port *p, int cmd, 1938 struct bridge_vlan_info *vinfo_curr, 1939 struct bridge_vlan_info **vinfo_last, 1940 bool *changed, 1941 struct netlink_ext_ack *extack); 1942 1943 #ifdef CONFIG_SYSFS 1944 /* br_sysfs_if.c */ 1945 extern const struct sysfs_ops brport_sysfs_ops; 1946 int br_sysfs_addif(struct net_bridge_port *p); 1947 int br_sysfs_renameif(struct net_bridge_port *p); 1948 1949 /* br_sysfs_br.c */ 1950 int br_sysfs_addbr(struct net_device *dev); 1951 void br_sysfs_delbr(struct net_device *dev); 1952 1953 #else 1954 1955 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } 1956 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } 1957 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } 1958 static inline void br_sysfs_delbr(struct net_device *dev) { return; } 1959 #endif /* CONFIG_SYSFS */ 1960 1961 /* br_switchdev.c */ 1962 #ifdef CONFIG_NET_SWITCHDEV 1963 int br_switchdev_port_offload(struct net_bridge_port *p, 1964 struct net_device *dev, const void *ctx, 1965 struct notifier_block *atomic_nb, 1966 struct notifier_block *blocking_nb, 1967 bool tx_fwd_offload, 1968 struct netlink_ext_ack *extack); 1969 1970 void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx, 1971 struct notifier_block *atomic_nb, 1972 struct notifier_block *blocking_nb); 1973 1974 bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb); 1975 1976 void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb); 1977 1978 void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p, 1979 struct sk_buff *skb); 1980 void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p, 1981 struct sk_buff *skb); 1982 void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 1983 struct sk_buff *skb); 1984 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 1985 const struct sk_buff *skb); 1986 int br_switchdev_set_port_flag(struct net_bridge_port *p, 1987 unsigned long flags, 1988 unsigned long mask, 1989 struct netlink_ext_ack *extack); 1990 void br_switchdev_fdb_notify(struct net_bridge *br, 1991 const struct net_bridge_fdb_entry *fdb, int type); 1992 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags, 1993 struct netlink_ext_ack *extack); 1994 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid); 1995 void br_switchdev_init(struct net_bridge *br); 1996 1997 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 1998 { 1999 skb->offload_fwd_mark = 0; 2000 } 2001 #else 2002 static inline int 2003 br_switchdev_port_offload(struct net_bridge_port *p, 2004 struct net_device *dev, const void *ctx, 2005 struct notifier_block *atomic_nb, 2006 struct notifier_block *blocking_nb, 2007 bool tx_fwd_offload, 2008 struct netlink_ext_ack *extack) 2009 { 2010 return -EOPNOTSUPP; 2011 } 2012 2013 static inline void 2014 br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx, 2015 struct notifier_block *atomic_nb, 2016 struct notifier_block *blocking_nb) 2017 { 2018 } 2019 2020 static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb) 2021 { 2022 return false; 2023 } 2024 2025 static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb) 2026 { 2027 } 2028 2029 static inline void 2030 nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p, 2031 struct sk_buff *skb) 2032 { 2033 } 2034 2035 static inline void 2036 nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p, 2037 struct sk_buff *skb) 2038 { 2039 } 2040 2041 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p, 2042 struct sk_buff *skb) 2043 { 2044 } 2045 2046 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p, 2047 const struct sk_buff *skb) 2048 { 2049 return true; 2050 } 2051 2052 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p, 2053 unsigned long flags, 2054 unsigned long mask, 2055 struct netlink_ext_ack *extack) 2056 { 2057 return 0; 2058 } 2059 2060 static inline int br_switchdev_port_vlan_add(struct net_device *dev, 2061 u16 vid, u16 flags, 2062 struct netlink_ext_ack *extack) 2063 { 2064 return -EOPNOTSUPP; 2065 } 2066 2067 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid) 2068 { 2069 return -EOPNOTSUPP; 2070 } 2071 2072 static inline void 2073 br_switchdev_fdb_notify(struct net_bridge *br, 2074 const struct net_bridge_fdb_entry *fdb, int type) 2075 { 2076 } 2077 2078 static inline void br_switchdev_frame_unmark(struct sk_buff *skb) 2079 { 2080 } 2081 2082 static inline void br_switchdev_init(struct net_bridge *br) 2083 { 2084 } 2085 2086 #endif /* CONFIG_NET_SWITCHDEV */ 2087 2088 /* br_arp_nd_proxy.c */ 2089 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br); 2090 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br, 2091 u16 vid, struct net_bridge_port *p); 2092 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br, 2093 u16 vid, struct net_bridge_port *p, struct nd_msg *msg); 2094 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m); 2095 #endif 2096