net/bridge/br_private.h

   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_VERSION      "2.3"
  33
  34 /* Control of forwarding link local multicast */
  35 #define BR_GROUPFWD_DEFAULT     0
  36 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */
  37 enum {
  38         BR_GROUPFWD_STP         = BIT(0),
  39         BR_GROUPFWD_MACPAUSE    = BIT(1),
  40         BR_GROUPFWD_LACP        = BIT(2),
  41 };
  42
  43 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \
  44                                 BR_GROUPFWD_LACP)
  45 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
  46 #define BR_GROUPFWD_8021AD      0xB801u
  47
  48 /* Path to usermode spanning tree program */
  49 #define BR_STP_PROG     "/sbin/bridge-stp"
  50
  51 typedef struct bridge_id bridge_id;
  52 typedef struct mac_addr mac_addr;
  53 typedef __u16 port_id;
  54
  55 struct bridge_id {
  56         unsigned char   prio[2];
  57         unsigned char   addr[ETH_ALEN];
  58 };
  59
  60 struct mac_addr {
  61         unsigned char   addr[ETH_ALEN];
  62 };
  63
  64 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
  65 /* our own querier */
  66 struct bridge_mcast_own_query {
  67         struct timer_list       timer;
  68         u32                     startup_sent;
  69 };
  70
  71 /* other querier */
  72 struct bridge_mcast_other_query {
  73         struct timer_list               timer;
  74         unsigned long                   delay_time;
  75 };
  76
  77 /* selected querier */
  78 struct bridge_mcast_querier {
  79         struct br_ip addr;
  80         struct net_bridge_port __rcu    *port;
  81 };
  82
  83 /* IGMP/MLD statistics */
  84 struct bridge_mcast_stats {
  85         struct br_mcast_stats mstats;
  86         struct u64_stats_sync syncp;
  87 };
  88 #endif
  89
  90 struct br_vlan_stats {
  91         u64 rx_bytes;
  92         u64 rx_packets;
  93         u64 tx_bytes;
  94         u64 tx_packets;
  95         struct u64_stats_sync syncp;
  96 };
  97
  98 struct br_tunnel_info {
  99         __be64                  tunnel_id;
 100         struct metadata_dst     *tunnel_dst;
 101 };
 102
 103 /* private vlan flags */
 104 enum {
 105         BR_VLFLAG_PER_PORT_STATS = BIT(0),
 106         BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1),
 107 };
 108
 109 /**
 110  * struct net_bridge_vlan - per-vlan entry
 111  *
 112  * @vnode: rhashtable member
 113  * @vid: VLAN id
 114  * @flags: bridge vlan flags
 115  * @priv_flags: private (in-kernel) bridge vlan flags
 116  * @stats: per-cpu VLAN statistics
 117  * @br: if MASTER flag set, this points to a bridge struct
 118  * @port: if MASTER flag unset, this points to a port struct
 119  * @refcnt: if MASTER flag set, this is bumped for each port referencing it
 120  * @brvlan: if MASTER flag unset, this points to the global per-VLAN context
 121  *          for this VLAN entry
 122  * @vlist: sorted list of VLAN entries
 123  * @rcu: used for entry destruction
 124  *
 125  * This structure is shared between the global per-VLAN entries contained in
 126  * the bridge rhashtable and the local per-port per-VLAN entries contained in
 127  * the port's rhashtable. The union entries should be interpreted depending on
 128  * the entry flags that are set.
 129  */
 130 struct net_bridge_vlan {
 131         struct rhash_head               vnode;
 132         struct rhash_head               tnode;
 133         u16                             vid;
 134         u16                             flags;
 135         u16                             priv_flags;
 136         struct br_vlan_stats __percpu   *stats;
 137         union {
 138                 struct net_bridge       *br;
 139                 struct net_bridge_port  *port;
 140         };
 141         union {
 142                 refcount_t              refcnt;
 143                 struct net_bridge_vlan  *brvlan;
 144         };
 145
 146         struct br_tunnel_info           tinfo;
 147
 148         struct list_head                vlist;
 149
 150         struct rcu_head                 rcu;
 151 };
 152
 153 /**
 154  * struct net_bridge_vlan_group
 155  *
 156  * @vlan_hash: VLAN entry rhashtable
 157  * @vlan_list: sorted VLAN entry list
 158  * @num_vlans: number of total VLAN entries
 159  * @pvid: PVID VLAN id
 160  *
 161  * IMPORTANT: Be careful when checking if there're VLAN entries using list
 162  *            primitives because the bridge can have entries in its list which
 163  *            are just for global context but not for filtering, i.e. they have
 164  *            the master flag set but not the brentry flag. If you have to check
 165  *            if there're "real" entries in the bridge please test @num_vlans
 166  */
 167 struct net_bridge_vlan_group {
 168         struct rhashtable               vlan_hash;
 169         struct rhashtable               tunnel_hash;
 170         struct list_head                vlan_list;
 171         u16                             num_vlans;
 172         u16                             pvid;
 173 };
 174
 175 /* bridge fdb flags */
 176 enum {
 177         BR_FDB_LOCAL,
 178         BR_FDB_STATIC,
 179         BR_FDB_STICKY,
 180         BR_FDB_ADDED_BY_USER,
 181 };
 182
 183 struct net_bridge_fdb_key {
 184         mac_addr addr;
 185         u16 vlan_id;
 186 };
 187
 188 struct net_bridge_fdb_entry {
 189         struct rhash_head               rhnode;
 190         struct net_bridge_port          *dst;
 191
 192         struct net_bridge_fdb_key       key;
 193         struct hlist_node               fdb_node;
 194         unsigned long                   flags;
 195         unsigned char                   added_by_external_learn:1,
 196                                         offloaded:1;
 197
 198         /* write-heavy members should not affect lookups */
 199         unsigned long                   updated ____cacheline_aligned_in_smp;
 200         unsigned long                   used;
 201
 202         struct rcu_head                 rcu;
 203 };
 204
 205 #define MDB_PG_FLAGS_PERMANENT  BIT(0)
 206 #define MDB_PG_FLAGS_OFFLOAD    BIT(1)
 207 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2)
 208
 209 struct net_bridge_port_group {
 210         struct net_bridge_port          *port;
 211         struct net_bridge_port_group __rcu *next;
 212         struct hlist_node               mglist;
 213         struct rcu_head                 rcu;
 214         struct timer_list               timer;
 215         struct br_ip                    addr;
 216         unsigned char                   flags;
 217         unsigned char                   eth_addr[ETH_ALEN];
 218 };
 219
 220 struct net_bridge_mdb_entry {
 221         struct rhash_head               rhnode;
 222         struct net_bridge               *br;
 223         struct net_bridge_port_group __rcu *ports;
 224         struct rcu_head                 rcu;
 225         struct timer_list               timer;
 226         struct br_ip                    addr;
 227         bool                            host_joined;
 228         struct hlist_node               mdb_node;
 229 };
 230
 231 struct net_bridge_port {
 232         struct net_bridge               *br;
 233         struct net_device               *dev;
 234         struct list_head                list;
 235
 236         unsigned long                   flags;
 237 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 238         struct net_bridge_vlan_group    __rcu *vlgrp;
 239 #endif
 240         struct net_bridge_port          __rcu *backup_port;
 241
 242         /* STP */
 243         u8                              priority;
 244         u8                              state;
 245         u16                             port_no;
 246         unsigned char                   topology_change_ack;
 247         unsigned char                   config_pending;
 248         port_id                         port_id;
 249         port_id                         designated_port;
 250         bridge_id                       designated_root;
 251         bridge_id                       designated_bridge;
 252         u32                             path_cost;
 253         u32                             designated_cost;
 254         unsigned long                   designated_age;
 255
 256         struct timer_list               forward_delay_timer;
 257         struct timer_list               hold_timer;
 258         struct timer_list               message_age_timer;
 259         struct kobject                  kobj;
 260         struct rcu_head                 rcu;
 261
 262 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 263         struct bridge_mcast_own_query   ip4_own_query;
 264 #if IS_ENABLED(CONFIG_IPV6)
 265         struct bridge_mcast_own_query   ip6_own_query;
 266 #endif /* IS_ENABLED(CONFIG_IPV6) */
 267         unsigned char                   multicast_router;
 268         struct bridge_mcast_stats       __percpu *mcast_stats;
 269         struct timer_list               multicast_router_timer;
 270         struct hlist_head               mglist;
 271         struct hlist_node               rlist;
 272 #endif
 273
 274 #ifdef CONFIG_SYSFS
 275         char                            sysfs_name[IFNAMSIZ];
 276 #endif
 277
 278 #ifdef CONFIG_NET_POLL_CONTROLLER
 279         struct netpoll                  *np;
 280 #endif
 281 #ifdef CONFIG_NET_SWITCHDEV
 282         int                             offload_fwd_mark;
 283 #endif
 284         u16                             group_fwd_mask;
 285         u16                             backup_redirected_cnt;
 286 };
 287
 288 #define kobj_to_brport(obj)     container_of(obj, struct net_bridge_port, kobj)
 289
 290 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
 291 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
 292
 293 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
 294 {
 295         return rcu_dereference(dev->rx_handler_data);
 296 }
 297
 298 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
 299 {
 300         return netif_is_bridge_port(dev) ?
 301                 rtnl_dereference(dev->rx_handler_data) : NULL;
 302 }
 303
 304 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
 305 {
 306         return netif_is_bridge_port(dev) ?
 307                 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
 308 }
 309
 310 enum net_bridge_opts {
 311         BROPT_VLAN_ENABLED,
 312         BROPT_VLAN_STATS_ENABLED,
 313         BROPT_NF_CALL_IPTABLES,
 314         BROPT_NF_CALL_IP6TABLES,
 315         BROPT_NF_CALL_ARPTABLES,
 316         BROPT_GROUP_ADDR_SET,
 317         BROPT_MULTICAST_ENABLED,
 318         BROPT_MULTICAST_QUERIER,
 319         BROPT_MULTICAST_QUERY_USE_IFADDR,
 320         BROPT_MULTICAST_STATS_ENABLED,
 321         BROPT_HAS_IPV6_ADDR,
 322         BROPT_NEIGH_SUPPRESS_ENABLED,
 323         BROPT_MTU_SET_BY_USER,
 324         BROPT_VLAN_STATS_PER_PORT,
 325         BROPT_NO_LL_LEARN,
 326         BROPT_VLAN_BRIDGE_BINDING,
 327 };
 328
 329 struct net_bridge {
 330         spinlock_t                      lock;
 331         spinlock_t                      hash_lock;
 332         struct list_head                port_list;
 333         struct net_device               *dev;
 334         struct pcpu_sw_netstats         __percpu *stats;
 335         unsigned long                   options;
 336         /* These fields are accessed on each packet */
 337 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 338         __be16                          vlan_proto;
 339         u16                             default_pvid;
 340         struct net_bridge_vlan_group    __rcu *vlgrp;
 341 #endif
 342
 343         struct rhashtable               fdb_hash_tbl;
 344 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
 345         union {
 346                 struct rtable           fake_rtable;
 347                 struct rt6_info         fake_rt6_info;
 348         };
 349 #endif
 350         u16                             group_fwd_mask;
 351         u16                             group_fwd_mask_required;
 352
 353         /* STP */
 354         bridge_id                       designated_root;
 355         bridge_id                       bridge_id;
 356         unsigned char                   topology_change;
 357         unsigned char                   topology_change_detected;
 358         u16                             root_port;
 359         unsigned long                   max_age;
 360         unsigned long                   hello_time;
 361         unsigned long                   forward_delay;
 362         unsigned long                   ageing_time;
 363         unsigned long                   bridge_max_age;
 364         unsigned long                   bridge_hello_time;
 365         unsigned long                   bridge_forward_delay;
 366         unsigned long                   bridge_ageing_time;
 367         u32                             root_path_cost;
 368
 369         u8                              group_addr[ETH_ALEN];
 370
 371         enum {
 372                 BR_NO_STP,              /* no spanning tree */
 373                 BR_KERNEL_STP,          /* old STP in kernel */
 374                 BR_USER_STP,            /* new RSTP in userspace */
 375         } stp_enabled;
 376
 377 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 378
 379         u32                             hash_max;
 380
 381         u32                             multicast_last_member_count;
 382         u32                             multicast_startup_query_count;
 383
 384         u8                              multicast_igmp_version;
 385         u8                              multicast_router;
 386 #if IS_ENABLED(CONFIG_IPV6)
 387         u8                              multicast_mld_version;
 388 #endif
 389         spinlock_t                      multicast_lock;
 390         unsigned long                   multicast_last_member_interval;
 391         unsigned long                   multicast_membership_interval;
 392         unsigned long                   multicast_querier_interval;
 393         unsigned long                   multicast_query_interval;
 394         unsigned long                   multicast_query_response_interval;
 395         unsigned long                   multicast_startup_query_interval;
 396
 397         struct rhashtable               mdb_hash_tbl;
 398
 399         struct hlist_head               mdb_list;
 400         struct hlist_head               router_list;
 401
 402         struct timer_list               multicast_router_timer;
 403         struct bridge_mcast_other_query ip4_other_query;
 404         struct bridge_mcast_own_query   ip4_own_query;
 405         struct bridge_mcast_querier     ip4_querier;
 406         struct bridge_mcast_stats       __percpu *mcast_stats;
 407 #if IS_ENABLED(CONFIG_IPV6)
 408         struct bridge_mcast_other_query ip6_other_query;
 409         struct bridge_mcast_own_query   ip6_own_query;
 410         struct bridge_mcast_querier     ip6_querier;
 411 #endif /* IS_ENABLED(CONFIG_IPV6) */
 412 #endif
 413
 414         struct timer_list               hello_timer;
 415         struct timer_list               tcn_timer;
 416         struct timer_list               topology_change_timer;
 417         struct delayed_work             gc_work;
 418         struct kobject                  *ifobj;
 419         u32                             auto_cnt;
 420
 421 #ifdef CONFIG_NET_SWITCHDEV
 422         int offload_fwd_mark;
 423 #endif
 424         struct hlist_head               fdb_list;
 425 };
 426
 427 struct br_input_skb_cb {
 428         struct net_device *brdev;
 429
 430         u16 frag_max_size;
 431 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 432         u8 igmp;
 433         u8 mrouters_only:1;
 434 #endif
 435         u8 proxyarp_replied:1;
 436         u8 src_port_isolated:1;
 437 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 438         u8 vlan_filtered:1;
 439 #endif
 440 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
 441         u8 br_netfilter_broute:1;
 442 #endif
 443
 444 #ifdef CONFIG_NET_SWITCHDEV
 445         int offload_fwd_mark;
 446 #endif
 447 };
 448
 449 #define BR_INPUT_SKB_CB(__skb)  ((struct br_input_skb_cb *)(__skb)->cb)
 450
 451 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 452 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb)   (BR_INPUT_SKB_CB(__skb)->mrouters_only)
 453 #else
 454 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb)   (0)
 455 #endif
 456
 457 #define br_printk(level, br, format, args...)   \
 458         printk(level "%s: " format, (br)->dev->name, ##args)
 459
 460 #define br_err(__br, format, args...)                   \
 461         br_printk(KERN_ERR, __br, format, ##args)
 462 #define br_warn(__br, format, args...)                  \
 463         br_printk(KERN_WARNING, __br, format, ##args)
 464 #define br_notice(__br, format, args...)                \
 465         br_printk(KERN_NOTICE, __br, format, ##args)
 466 #define br_info(__br, format, args...)                  \
 467         br_printk(KERN_INFO, __br, format, ##args)
 468
 469 #define br_debug(br, format, args...)                   \
 470         pr_debug("%s: " format,  (br)->dev->name, ##args)
 471
 472 /* called under bridge lock */
 473 static inline int br_is_root_bridge(const struct net_bridge *br)
 474 {
 475         return !memcmp(&br->bridge_id, &br->designated_root, 8);
 476 }
 477
 478 /* check if a VLAN entry is global */
 479 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
 480 {
 481         return v->flags & BRIDGE_VLAN_INFO_MASTER;
 482 }
 483
 484 /* check if a VLAN entry is used by the bridge */
 485 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
 486 {
 487         return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
 488 }
 489
 490 /* check if we should use the vlan entry, returns false if it's only context */
 491 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
 492 {
 493         if (br_vlan_is_master(v)) {
 494                 if (br_vlan_is_brentry(v))
 495                         return true;
 496                 else
 497                         return false;
 498         }
 499
 500         return true;
 501 }
 502
 503 static inline int br_opt_get(const struct net_bridge *br,
 504                              enum net_bridge_opts opt)
 505 {
 506         return test_bit(opt, &br->options);
 507 }
 508
 509 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
 510                       struct netlink_ext_ack *extack);
 511 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
 512 int br_boolopt_multi_toggle(struct net_bridge *br,
 513                             struct br_boolopt_multi *bm,
 514                             struct netlink_ext_ack *extack);
 515 void br_boolopt_multi_get(const struct net_bridge *br,
 516                           struct br_boolopt_multi *bm);
 517 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
 518
 519 /* br_device.c */
 520 void br_dev_setup(struct net_device *dev);
 521 void br_dev_delete(struct net_device *dev, struct list_head *list);
 522 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
 523 #ifdef CONFIG_NET_POLL_CONTROLLER
 524 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
 525                                        struct sk_buff *skb)
 526 {
 527         struct netpoll *np = p->np;
 528
 529         if (np)
 530                 netpoll_send_skb(np, skb);
 531 }
 532
 533 int br_netpoll_enable(struct net_bridge_port *p);
 534 void br_netpoll_disable(struct net_bridge_port *p);
 535 #else
 536 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
 537                                        struct sk_buff *skb)
 538 {
 539 }
 540
 541 static inline int br_netpoll_enable(struct net_bridge_port *p)
 542 {
 543         return 0;
 544 }
 545
 546 static inline void br_netpoll_disable(struct net_bridge_port *p)
 547 {
 548 }
 549 #endif
 550
 551 /* br_fdb.c */
 552 int br_fdb_init(void);
 553 void br_fdb_fini(void);
 554 int br_fdb_hash_init(struct net_bridge *br);
 555 void br_fdb_hash_fini(struct net_bridge *br);
 556 void br_fdb_flush(struct net_bridge *br);
 557 void br_fdb_find_delete_local(struct net_bridge *br,
 558                               const struct net_bridge_port *p,
 559                               const unsigned char *addr, u16 vid);
 560 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
 561 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
 562 void br_fdb_cleanup(struct work_struct *work);
 563 void br_fdb_delete_by_port(struct net_bridge *br,
 564                            const struct net_bridge_port *p, u16 vid, int do_all);
 565 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
 566                                              const unsigned char *addr,
 567                                              __u16 vid);
 568 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
 569 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
 570                    unsigned long off);
 571 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
 572                   const unsigned char *addr, u16 vid);
 573 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 574                    const unsigned char *addr, u16 vid, bool added_by_user);
 575
 576 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 577                   struct net_device *dev, const unsigned char *addr, u16 vid);
 578 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
 579                const unsigned char *addr, u16 vid, u16 nlh_flags,
 580                struct netlink_ext_ack *extack);
 581 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 582                 struct net_device *dev, struct net_device *fdev, int *idx);
 583 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
 584                const unsigned char *addr, u16 vid, u32 portid, u32 seq,
 585                struct netlink_ext_ack *extack);
 586 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
 587 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
 588 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 589                               const unsigned char *addr, u16 vid,
 590                               bool swdev_notify);
 591 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 592                               const unsigned char *addr, u16 vid,
 593                               bool swdev_notify);
 594 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
 595                           const unsigned char *addr, u16 vid, bool offloaded);
 596
 597 /* br_forward.c */
 598 enum br_pkt_type {
 599         BR_PKT_UNICAST,
 600         BR_PKT_MULTICAST,
 601         BR_PKT_BROADCAST
 602 };
 603 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
 604 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
 605                 bool local_rcv, bool local_orig);
 606 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
 607 void br_flood(struct net_bridge *br, struct sk_buff *skb,
 608               enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
 609
 610 /* return true if both source port and dest port are isolated */
 611 static inline bool br_skb_isolated(const struct net_bridge_port *to,
 612                                    const struct sk_buff *skb)
 613 {
 614         return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
 615                (to->flags & BR_ISOLATED);
 616 }
 617
 618 /* br_if.c */
 619 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
 620 int br_add_bridge(struct net *net, const char *name);
 621 int br_del_bridge(struct net *net, const char *name);
 622 int br_add_if(struct net_bridge *br, struct net_device *dev,
 623               struct netlink_ext_ack *extack);
 624 int br_del_if(struct net_bridge *br, struct net_device *dev);
 625 void br_mtu_auto_adjust(struct net_bridge *br);
 626 netdev_features_t br_features_recompute(struct net_bridge *br,
 627                                         netdev_features_t features);
 628 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
 629 void br_manage_promisc(struct net_bridge *br);
 630 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
 631
 632 /* br_input.c */
 633 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
 634 rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
 635
 636 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
 637 {
 638         return rcu_dereference(dev->rx_handler) == br_handle_frame;
 639 }
 640
 641 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
 642 {
 643         return rcu_dereference_rtnl(dev->rx_handler) == br_handle_frame;
 644 }
 645
 646 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
 647 {
 648         return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
 649 }
 650
 651 static inline struct net_bridge_port *
 652 br_port_get_check_rtnl(const struct net_device *dev)
 653 {
 654         return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
 655 }
 656
 657 /* br_ioctl.c */
 658 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 659 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
 660                              void __user *arg);
 661
 662 /* br_multicast.c */
 663 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 664 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
 665                      struct sk_buff *skb, u16 vid);
 666 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 667                                         struct sk_buff *skb, u16 vid);
 668 int br_multicast_add_port(struct net_bridge_port *port);
 669 void br_multicast_del_port(struct net_bridge_port *port);
 670 void br_multicast_enable_port(struct net_bridge_port *port);
 671 void br_multicast_disable_port(struct net_bridge_port *port);
 672 void br_multicast_init(struct net_bridge *br);
 673 void br_multicast_open(struct net_bridge *br);
 674 void br_multicast_stop(struct net_bridge *br);
 675 void br_multicast_dev_del(struct net_bridge *br);
 676 void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
 677                         struct sk_buff *skb, bool local_rcv, bool local_orig);
 678 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
 679 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
 680 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
 681 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
 682 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
 683 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
 684 #if IS_ENABLED(CONFIG_IPV6)
 685 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
 686 #endif
 687 struct net_bridge_mdb_entry *
 688 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
 689 struct net_bridge_mdb_entry *
 690 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
 691 struct net_bridge_port_group *
 692 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
 693                             struct net_bridge_port_group __rcu *next,
 694                             unsigned char flags, const unsigned char *src);
 695 int br_mdb_hash_init(struct net_bridge *br);
 696 void br_mdb_hash_fini(struct net_bridge *br);
 697 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
 698                    struct br_ip *group, int type, u8 flags);
 699 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
 700                    int type);
 701 void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
 702                         const struct sk_buff *skb, u8 type, u8 dir);
 703 int br_multicast_init_stats(struct net_bridge *br);
 704 void br_multicast_uninit_stats(struct net_bridge *br);
 705 void br_multicast_get_stats(const struct net_bridge *br,
 706                             const struct net_bridge_port *p,
 707                             struct br_mcast_stats *dest);
 708 void br_mdb_init(void);
 709 void br_mdb_uninit(void);
 710 void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify);
 711 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
 712
 713 #define mlock_dereference(X, br) \
 714         rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
 715
 716 static inline bool br_multicast_is_router(struct net_bridge *br)
 717 {
 718         return br->multicast_router == 2 ||
 719                (br->multicast_router == 1 &&
 720                 timer_pending(&br->multicast_router_timer));
 721 }
 722
 723 static inline bool
 724 __br_multicast_querier_exists(struct net_bridge *br,
 725                                 struct bridge_mcast_other_query *querier,
 726                                 const bool is_ipv6)
 727 {
 728         bool own_querier_enabled;
 729
 730         if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) {
 731                 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR))
 732                         own_querier_enabled = false;
 733                 else
 734                         own_querier_enabled = true;
 735         } else {
 736                 own_querier_enabled = false;
 737         }
 738
 739         return time_is_before_jiffies(querier->delay_time) &&
 740                (own_querier_enabled || timer_pending(&querier->timer));
 741 }
 742
 743 static inline bool br_multicast_querier_exists(struct net_bridge *br,
 744                                                struct ethhdr *eth)
 745 {
 746         switch (eth->h_proto) {
 747         case (htons(ETH_P_IP)):
 748                 return __br_multicast_querier_exists(br,
 749                         &br->ip4_other_query, false);
 750 #if IS_ENABLED(CONFIG_IPV6)
 751         case (htons(ETH_P_IPV6)):
 752                 return __br_multicast_querier_exists(br,
 753                         &br->ip6_other_query, true);
 754 #endif
 755         default:
 756                 return false;
 757         }
 758 }
 759
 760 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
 761 {
 762         return BR_INPUT_SKB_CB(skb)->igmp;
 763 }
 764 #else
 765 static inline int br_multicast_rcv(struct net_bridge *br,
 766                                    struct net_bridge_port *port,
 767                                    struct sk_buff *skb,
 768                                    u16 vid)
 769 {
 770         return 0;
 771 }
 772
 773 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 774                                                       struct sk_buff *skb, u16 vid)
 775 {
 776         return NULL;
 777 }
 778
 779 static inline int br_multicast_add_port(struct net_bridge_port *port)
 780 {
 781         return 0;
 782 }
 783
 784 static inline void br_multicast_del_port(struct net_bridge_port *port)
 785 {
 786 }
 787
 788 static inline void br_multicast_enable_port(struct net_bridge_port *port)
 789 {
 790 }
 791
 792 static inline void br_multicast_disable_port(struct net_bridge_port *port)
 793 {
 794 }
 795
 796 static inline void br_multicast_init(struct net_bridge *br)
 797 {
 798 }
 799
 800 static inline void br_multicast_open(struct net_bridge *br)
 801 {
 802 }
 803
 804 static inline void br_multicast_stop(struct net_bridge *br)
 805 {
 806 }
 807
 808 static inline void br_multicast_dev_del(struct net_bridge *br)
 809 {
 810 }
 811
 812 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
 813                                       struct sk_buff *skb,
 814                                       bool local_rcv, bool local_orig)
 815 {
 816 }
 817
 818 static inline bool br_multicast_is_router(struct net_bridge *br)
 819 {
 820         return false;
 821 }
 822
 823 static inline bool br_multicast_querier_exists(struct net_bridge *br,
 824                                                struct ethhdr *eth)
 825 {
 826         return false;
 827 }
 828
 829 static inline void br_mdb_init(void)
 830 {
 831 }
 832
 833 static inline void br_mdb_uninit(void)
 834 {
 835 }
 836
 837 static inline int br_mdb_hash_init(struct net_bridge *br)
 838 {
 839         return 0;
 840 }
 841
 842 static inline void br_mdb_hash_fini(struct net_bridge *br)
 843 {
 844 }
 845
 846 static inline void br_multicast_count(struct net_bridge *br,
 847                                       const struct net_bridge_port *p,
 848                                       const struct sk_buff *skb,
 849                                       u8 type, u8 dir)
 850 {
 851 }
 852
 853 static inline int br_multicast_init_stats(struct net_bridge *br)
 854 {
 855         return 0;
 856 }
 857
 858 static inline void br_multicast_uninit_stats(struct net_bridge *br)
 859 {
 860 }
 861
 862 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
 863 {
 864         return 0;
 865 }
 866 #endif
 867
 868 /* br_vlan.c */
 869 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 870 bool br_allowed_ingress(const struct net_bridge *br,
 871                         struct net_bridge_vlan_group *vg, struct sk_buff *skb,
 872                         u16 *vid);
 873 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
 874                        const struct sk_buff *skb);
 875 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
 876 struct sk_buff *br_handle_vlan(struct net_bridge *br,
 877                                const struct net_bridge_port *port,
 878                                struct net_bridge_vlan_group *vg,
 879                                struct sk_buff *skb);
 880 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
 881                 bool *changed, struct netlink_ext_ack *extack);
 882 int br_vlan_delete(struct net_bridge *br, u16 vid);
 883 void br_vlan_flush(struct net_bridge *br);
 884 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
 885 void br_recalculate_fwd_mask(struct net_bridge *br);
 886 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
 887 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
 888 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
 889 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
 890 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
 891 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
 892 int br_vlan_init(struct net_bridge *br);
 893 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
 894 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
 895                                struct netlink_ext_ack *extack);
 896 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
 897                  bool *changed, struct netlink_ext_ack *extack);
 898 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
 899 void nbp_vlan_flush(struct net_bridge_port *port);
 900 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
 901 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
 902 void br_vlan_get_stats(const struct net_bridge_vlan *v,
 903                        struct br_vlan_stats *stats);
 904 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
 905 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
 906                          void *ptr);
 907
 908 static inline struct net_bridge_vlan_group *br_vlan_group(
 909                                         const struct net_bridge *br)
 910 {
 911         return rtnl_dereference(br->vlgrp);
 912 }
 913
 914 static inline struct net_bridge_vlan_group *nbp_vlan_group(
 915                                         const struct net_bridge_port *p)
 916 {
 917         return rtnl_dereference(p->vlgrp);
 918 }
 919
 920 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
 921                                         const struct net_bridge *br)
 922 {
 923         return rcu_dereference(br->vlgrp);
 924 }
 925
 926 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
 927                                         const struct net_bridge_port *p)
 928 {
 929         return rcu_dereference(p->vlgrp);
 930 }
 931
 932 /* Since bridge now depends on 8021Q module, but the time bridge sees the
 933  * skb, the vlan tag will always be present if the frame was tagged.
 934  */
 935 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
 936 {
 937         int err = 0;
 938
 939         if (skb_vlan_tag_present(skb)) {
 940                 *vid = skb_vlan_tag_get_id(skb);
 941         } else {
 942                 *vid = 0;
 943                 err = -EINVAL;
 944         }
 945
 946         return err;
 947 }
 948
 949 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
 950 {
 951         if (!vg)
 952                 return 0;
 953
 954         smp_rmb();
 955         return vg->pvid;
 956 }
 957
 958 #else
 959 static inline bool br_allowed_ingress(const struct net_bridge *br,
 960                                       struct net_bridge_vlan_group *vg,
 961                                       struct sk_buff *skb,
 962                                       u16 *vid)
 963 {
 964         return true;
 965 }
 966
 967 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
 968                                      const struct sk_buff *skb)
 969 {
 970         return true;
 971 }
 972
 973 static inline bool br_should_learn(struct net_bridge_port *p,
 974                                    struct sk_buff *skb, u16 *vid)
 975 {
 976         return true;
 977 }
 978
 979 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
 980                                              const struct net_bridge_port *port,
 981                                              struct net_bridge_vlan_group *vg,
 982                                              struct sk_buff *skb)
 983 {
 984         return skb;
 985 }
 986
 987 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
 988                               bool *changed, struct netlink_ext_ack *extack)
 989 {
 990         *changed = false;
 991         return -EOPNOTSUPP;
 992 }
 993
 994 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
 995 {
 996         return -EOPNOTSUPP;
 997 }
 998
 999 static inline void br_vlan_flush(struct net_bridge *br)
1000 {
1001 }
1002
1003 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1004 {
1005 }
1006
1007 static inline int br_vlan_init(struct net_bridge *br)
1008 {
1009         return 0;
1010 }
1011
1012 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1013                                bool *changed, struct netlink_ext_ack *extack)
1014 {
1015         *changed = false;
1016         return -EOPNOTSUPP;
1017 }
1018
1019 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1020 {
1021         return -EOPNOTSUPP;
1022 }
1023
1024 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1025 {
1026 }
1027
1028 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1029                                                    u16 vid)
1030 {
1031         return NULL;
1032 }
1033
1034 static inline int nbp_vlan_init(struct net_bridge_port *port,
1035                                 struct netlink_ext_ack *extack)
1036 {
1037         return 0;
1038 }
1039
1040 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1041 {
1042         return 0;
1043 }
1044
1045 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1046 {
1047         return 0;
1048 }
1049
1050 static inline int __br_vlan_filter_toggle(struct net_bridge *br,
1051                                           unsigned long val)
1052 {
1053         return -EOPNOTSUPP;
1054 }
1055
1056 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1057                                          u32 filter_mask)
1058 {
1059         return 0;
1060 }
1061
1062 static inline struct net_bridge_vlan_group *br_vlan_group(
1063                                         const struct net_bridge *br)
1064 {
1065         return NULL;
1066 }
1067
1068 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1069                                         const struct net_bridge_port *p)
1070 {
1071         return NULL;
1072 }
1073
1074 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1075                                         const struct net_bridge *br)
1076 {
1077         return NULL;
1078 }
1079
1080 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1081                                         const struct net_bridge_port *p)
1082 {
1083         return NULL;
1084 }
1085
1086 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1087                                      struct br_vlan_stats *stats)
1088 {
1089 }
1090
1091 static inline void br_vlan_port_event(struct net_bridge_port *p,
1092                                       unsigned long event)
1093 {
1094 }
1095
1096 static inline int br_vlan_bridge_event(struct net_device *dev,
1097                                        unsigned long event, void *ptr)
1098 {
1099         return 0;
1100 }
1101 #endif
1102
1103 struct nf_br_ops {
1104         int (*br_dev_xmit_hook)(struct sk_buff *skb);
1105 };
1106 extern const struct nf_br_ops __rcu *nf_br_ops;
1107
1108 /* br_netfilter.c */
1109 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1110 int br_nf_core_init(void);
1111 void br_nf_core_fini(void);
1112 void br_netfilter_rtable_init(struct net_bridge *);
1113 #else
1114 static inline int br_nf_core_init(void) { return 0; }
1115 static inline void br_nf_core_fini(void) {}
1116 #define br_netfilter_rtable_init(x)
1117 #endif
1118
1119 /* br_stp.c */
1120 void br_set_state(struct net_bridge_port *p, unsigned int state);
1121 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1122 void br_init_port(struct net_bridge_port *p);
1123 void br_become_designated_port(struct net_bridge_port *p);
1124
1125 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1126 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1127 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1128 int br_set_max_age(struct net_bridge *br, unsigned long x);
1129 int __set_ageing_time(struct net_device *dev, unsigned long t);
1130 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1131
1132
1133 /* br_stp_if.c */
1134 void br_stp_enable_bridge(struct net_bridge *br);
1135 void br_stp_disable_bridge(struct net_bridge *br);
1136 void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1137 void br_stp_enable_port(struct net_bridge_port *p);
1138 void br_stp_disable_port(struct net_bridge_port *p);
1139 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1140 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1141 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1142 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1143 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1144 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1145
1146 /* br_stp_bpdu.c */
1147 struct stp_proto;
1148 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1149                 struct net_device *dev);
1150
1151 /* br_stp_timer.c */
1152 void br_stp_timer_init(struct net_bridge *br);
1153 void br_stp_port_timer_init(struct net_bridge_port *p);
1154 unsigned long br_timer_value(const struct timer_list *timer);
1155
1156 /* br.c */
1157 #if IS_ENABLED(CONFIG_ATM_LANE)
1158 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1159 #endif
1160
1161 /* br_netlink.c */
1162 extern struct rtnl_link_ops br_link_ops;
1163 int br_netlink_init(void);
1164 void br_netlink_fini(void);
1165 void br_ifinfo_notify(int event, const struct net_bridge *br,
1166                       const struct net_bridge_port *port);
1167 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
1168                struct netlink_ext_ack *extack);
1169 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1170 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1171                u32 filter_mask, int nlflags);
1172
1173 #ifdef CONFIG_SYSFS
1174 /* br_sysfs_if.c */
1175 extern const struct sysfs_ops brport_sysfs_ops;
1176 int br_sysfs_addif(struct net_bridge_port *p);
1177 int br_sysfs_renameif(struct net_bridge_port *p);
1178
1179 /* br_sysfs_br.c */
1180 int br_sysfs_addbr(struct net_device *dev);
1181 void br_sysfs_delbr(struct net_device *dev);
1182
1183 #else
1184
1185 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1186 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1187 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1188 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1189 #endif /* CONFIG_SYSFS */
1190
1191 /* br_switchdev.c */
1192 #ifdef CONFIG_NET_SWITCHDEV
1193 int nbp_switchdev_mark_set(struct net_bridge_port *p);
1194 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1195                               struct sk_buff *skb);
1196 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1197                                   const struct sk_buff *skb);
1198 int br_switchdev_set_port_flag(struct net_bridge_port *p,
1199                                unsigned long flags,
1200                                unsigned long mask);
1201 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
1202                              int type);
1203 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
1204                                struct netlink_ext_ack *extack);
1205 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
1206
1207 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1208 {
1209         skb->offload_fwd_mark = 0;
1210 }
1211 #else
1212 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1213 {
1214         return 0;
1215 }
1216
1217 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1218                                             struct sk_buff *skb)
1219 {
1220 }
1221
1222 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1223                                                 const struct sk_buff *skb)
1224 {
1225         return true;
1226 }
1227
1228 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1229                                              unsigned long flags,
1230                                              unsigned long mask)
1231 {
1232         return 0;
1233 }
1234
1235 static inline int br_switchdev_port_vlan_add(struct net_device *dev,
1236                                              u16 vid, u16 flags,
1237                                              struct netlink_ext_ack *extack)
1238 {
1239         return -EOPNOTSUPP;
1240 }
1241
1242 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
1243 {
1244         return -EOPNOTSUPP;
1245 }
1246
1247 static inline void
1248 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
1249 {
1250 }
1251
1252 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1253 {
1254 }
1255 #endif /* CONFIG_NET_SWITCHDEV */
1256
1257 /* br_arp_nd_proxy.c */
1258 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
1259 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
1260                               u16 vid, struct net_bridge_port *p);
1261 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
1262                        u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
1263 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
1264 #endif