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