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         BR_FDB_ADDED_BY_EXT_LEARN,
 182         BR_FDB_OFFLOADED,
 183 };
 184
 185 struct net_bridge_fdb_key {
 186         mac_addr addr;
 187         u16 vlan_id;
 188 };
 189
 190 struct net_bridge_fdb_entry {
 191         struct rhash_head               rhnode;
 192         struct net_bridge_port          *dst;
 193
 194         struct net_bridge_fdb_key       key;
 195         struct hlist_node               fdb_node;
 196         unsigned long                   flags;
 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 bool nbp_state_should_learn(const struct net_bridge_port *p)
 504 {
 505         return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
 506 }
 507
 508 static inline int br_opt_get(const struct net_bridge *br,
 509                              enum net_bridge_opts opt)
 510 {
 511         return test_bit(opt, &br->options);
 512 }
 513
 514 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
 515                       struct netlink_ext_ack *extack);
 516 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
 517 int br_boolopt_multi_toggle(struct net_bridge *br,
 518                             struct br_boolopt_multi *bm,
 519                             struct netlink_ext_ack *extack);
 520 void br_boolopt_multi_get(const struct net_bridge *br,
 521                           struct br_boolopt_multi *bm);
 522 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
 523
 524 /* br_device.c */
 525 void br_dev_setup(struct net_device *dev);
 526 void br_dev_delete(struct net_device *dev, struct list_head *list);
 527 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
 528 #ifdef CONFIG_NET_POLL_CONTROLLER
 529 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
 530                                        struct sk_buff *skb)
 531 {
 532         struct netpoll *np = p->np;
 533
 534         if (np)
 535                 netpoll_send_skb(np, skb);
 536 }
 537
 538 int br_netpoll_enable(struct net_bridge_port *p);
 539 void br_netpoll_disable(struct net_bridge_port *p);
 540 #else
 541 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
 542                                        struct sk_buff *skb)
 543 {
 544 }
 545
 546 static inline int br_netpoll_enable(struct net_bridge_port *p)
 547 {
 548         return 0;
 549 }
 550
 551 static inline void br_netpoll_disable(struct net_bridge_port *p)
 552 {
 553 }
 554 #endif
 555
 556 /* br_fdb.c */
 557 int br_fdb_init(void);
 558 void br_fdb_fini(void);
 559 int br_fdb_hash_init(struct net_bridge *br);
 560 void br_fdb_hash_fini(struct net_bridge *br);
 561 void br_fdb_flush(struct net_bridge *br);
 562 void br_fdb_find_delete_local(struct net_bridge *br,
 563                               const struct net_bridge_port *p,
 564                               const unsigned char *addr, u16 vid);
 565 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
 566 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
 567 void br_fdb_cleanup(struct work_struct *work);
 568 void br_fdb_delete_by_port(struct net_bridge *br,
 569                            const struct net_bridge_port *p, u16 vid, int do_all);
 570 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
 571                                              const unsigned char *addr,
 572                                              __u16 vid);
 573 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
 574 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
 575                    unsigned long off);
 576 int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
 577                   const unsigned char *addr, u16 vid);
 578 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 579                    const unsigned char *addr, u16 vid, unsigned long flags);
 580
 581 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 582                   struct net_device *dev, const unsigned char *addr, u16 vid);
 583 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
 584                const unsigned char *addr, u16 vid, u16 nlh_flags,
 585                struct netlink_ext_ack *extack);
 586 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 587                 struct net_device *dev, struct net_device *fdev, int *idx);
 588 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
 589                const unsigned char *addr, u16 vid, u32 portid, u32 seq,
 590                struct netlink_ext_ack *extack);
 591 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
 592 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
 593 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 594                               const unsigned char *addr, u16 vid,
 595                               bool swdev_notify);
 596 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 597                               const unsigned char *addr, u16 vid,
 598                               bool swdev_notify);
 599 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
 600                           const unsigned char *addr, u16 vid, bool offloaded);
 601
 602 /* br_forward.c */
 603 enum br_pkt_type {
 604         BR_PKT_UNICAST,
 605         BR_PKT_MULTICAST,
 606         BR_PKT_BROADCAST
 607 };
 608 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
 609 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
 610                 bool local_rcv, bool local_orig);
 611 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
 612 void br_flood(struct net_bridge *br, struct sk_buff *skb,
 613               enum br_pkt_type pkt_type, bool local_rcv, bool local_orig);
 614
 615 /* return true if both source port and dest port are isolated */
 616 static inline bool br_skb_isolated(const struct net_bridge_port *to,
 617                                    const struct sk_buff *skb)
 618 {
 619         return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
 620                (to->flags & BR_ISOLATED);
 621 }
 622
 623 /* br_if.c */
 624 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
 625 int br_add_bridge(struct net *net, const char *name);
 626 int br_del_bridge(struct net *net, const char *name);
 627 int br_add_if(struct net_bridge *br, struct net_device *dev,
 628               struct netlink_ext_ack *extack);
 629 int br_del_if(struct net_bridge *br, struct net_device *dev);
 630 void br_mtu_auto_adjust(struct net_bridge *br);
 631 netdev_features_t br_features_recompute(struct net_bridge *br,
 632                                         netdev_features_t features);
 633 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
 634 void br_manage_promisc(struct net_bridge *br);
 635 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
 636
 637 /* br_input.c */
 638 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
 639 rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
 640
 641 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
 642 {
 643         return rcu_dereference(dev->rx_handler) == br_handle_frame;
 644 }
 645
 646 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
 647 {
 648         return rcu_dereference_rtnl(dev->rx_handler) == br_handle_frame;
 649 }
 650
 651 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
 652 {
 653         return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
 654 }
 655
 656 static inline struct net_bridge_port *
 657 br_port_get_check_rtnl(const struct net_device *dev)
 658 {
 659         return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
 660 }
 661
 662 /* br_ioctl.c */
 663 int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 664 int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
 665                              void __user *arg);
 666
 667 /* br_multicast.c */
 668 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
 669 int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
 670                      struct sk_buff *skb, u16 vid);
 671 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 672                                         struct sk_buff *skb, u16 vid);
 673 int br_multicast_add_port(struct net_bridge_port *port);
 674 void br_multicast_del_port(struct net_bridge_port *port);
 675 void br_multicast_enable_port(struct net_bridge_port *port);
 676 void br_multicast_disable_port(struct net_bridge_port *port);
 677 void br_multicast_init(struct net_bridge *br);
 678 void br_multicast_open(struct net_bridge *br);
 679 void br_multicast_stop(struct net_bridge *br);
 680 void br_multicast_dev_del(struct net_bridge *br);
 681 void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
 682                         struct sk_buff *skb, bool local_rcv, bool local_orig);
 683 int br_multicast_set_router(struct net_bridge *br, unsigned long val);
 684 int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
 685 int br_multicast_toggle(struct net_bridge *br, unsigned long val);
 686 int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
 687 int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
 688 int br_multicast_set_igmp_version(struct net_bridge *br, unsigned long val);
 689 #if IS_ENABLED(CONFIG_IPV6)
 690 int br_multicast_set_mld_version(struct net_bridge *br, unsigned long val);
 691 #endif
 692 struct net_bridge_mdb_entry *
 693 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
 694 struct net_bridge_mdb_entry *
 695 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
 696 struct net_bridge_port_group *
 697 br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
 698                             struct net_bridge_port_group __rcu *next,
 699                             unsigned char flags, const unsigned char *src);
 700 int br_mdb_hash_init(struct net_bridge *br);
 701 void br_mdb_hash_fini(struct net_bridge *br);
 702 void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
 703                    struct br_ip *group, int type, u8 flags);
 704 void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
 705                    int type);
 706 void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
 707                         const struct sk_buff *skb, u8 type, u8 dir);
 708 int br_multicast_init_stats(struct net_bridge *br);
 709 void br_multicast_uninit_stats(struct net_bridge *br);
 710 void br_multicast_get_stats(const struct net_bridge *br,
 711                             const struct net_bridge_port *p,
 712                             struct br_mcast_stats *dest);
 713 void br_mdb_init(void);
 714 void br_mdb_uninit(void);
 715 void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify);
 716 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
 717
 718 #define mlock_dereference(X, br) \
 719         rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
 720
 721 static inline bool br_multicast_is_router(struct net_bridge *br)
 722 {
 723         return br->multicast_router == 2 ||
 724                (br->multicast_router == 1 &&
 725                 timer_pending(&br->multicast_router_timer));
 726 }
 727
 728 static inline bool
 729 __br_multicast_querier_exists(struct net_bridge *br,
 730                                 struct bridge_mcast_other_query *querier,
 731                                 const bool is_ipv6)
 732 {
 733         bool own_querier_enabled;
 734
 735         if (br_opt_get(br, BROPT_MULTICAST_QUERIER)) {
 736                 if (is_ipv6 && !br_opt_get(br, BROPT_HAS_IPV6_ADDR))
 737                         own_querier_enabled = false;
 738                 else
 739                         own_querier_enabled = true;
 740         } else {
 741                 own_querier_enabled = false;
 742         }
 743
 744         return time_is_before_jiffies(querier->delay_time) &&
 745                (own_querier_enabled || timer_pending(&querier->timer));
 746 }
 747
 748 static inline bool br_multicast_querier_exists(struct net_bridge *br,
 749                                                struct ethhdr *eth)
 750 {
 751         switch (eth->h_proto) {
 752         case (htons(ETH_P_IP)):
 753                 return __br_multicast_querier_exists(br,
 754                         &br->ip4_other_query, false);
 755 #if IS_ENABLED(CONFIG_IPV6)
 756         case (htons(ETH_P_IPV6)):
 757                 return __br_multicast_querier_exists(br,
 758                         &br->ip6_other_query, true);
 759 #endif
 760         default:
 761                 return false;
 762         }
 763 }
 764
 765 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
 766 {
 767         return BR_INPUT_SKB_CB(skb)->igmp;
 768 }
 769 #else
 770 static inline int br_multicast_rcv(struct net_bridge *br,
 771                                    struct net_bridge_port *port,
 772                                    struct sk_buff *skb,
 773                                    u16 vid)
 774 {
 775         return 0;
 776 }
 777
 778 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 779                                                       struct sk_buff *skb, u16 vid)
 780 {
 781         return NULL;
 782 }
 783
 784 static inline int br_multicast_add_port(struct net_bridge_port *port)
 785 {
 786         return 0;
 787 }
 788
 789 static inline void br_multicast_del_port(struct net_bridge_port *port)
 790 {
 791 }
 792
 793 static inline void br_multicast_enable_port(struct net_bridge_port *port)
 794 {
 795 }
 796
 797 static inline void br_multicast_disable_port(struct net_bridge_port *port)
 798 {
 799 }
 800
 801 static inline void br_multicast_init(struct net_bridge *br)
 802 {
 803 }
 804
 805 static inline void br_multicast_open(struct net_bridge *br)
 806 {
 807 }
 808
 809 static inline void br_multicast_stop(struct net_bridge *br)
 810 {
 811 }
 812
 813 static inline void br_multicast_dev_del(struct net_bridge *br)
 814 {
 815 }
 816
 817 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
 818                                       struct sk_buff *skb,
 819                                       bool local_rcv, bool local_orig)
 820 {
 821 }
 822
 823 static inline bool br_multicast_is_router(struct net_bridge *br)
 824 {
 825         return false;
 826 }
 827
 828 static inline bool br_multicast_querier_exists(struct net_bridge *br,
 829                                                struct ethhdr *eth)
 830 {
 831         return false;
 832 }
 833
 834 static inline void br_mdb_init(void)
 835 {
 836 }
 837
 838 static inline void br_mdb_uninit(void)
 839 {
 840 }
 841
 842 static inline int br_mdb_hash_init(struct net_bridge *br)
 843 {
 844         return 0;
 845 }
 846
 847 static inline void br_mdb_hash_fini(struct net_bridge *br)
 848 {
 849 }
 850
 851 static inline void br_multicast_count(struct net_bridge *br,
 852                                       const struct net_bridge_port *p,
 853                                       const struct sk_buff *skb,
 854                                       u8 type, u8 dir)
 855 {
 856 }
 857
 858 static inline int br_multicast_init_stats(struct net_bridge *br)
 859 {
 860         return 0;
 861 }
 862
 863 static inline void br_multicast_uninit_stats(struct net_bridge *br)
 864 {
 865 }
 866
 867 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
 868 {
 869         return 0;
 870 }
 871 #endif
 872
 873 /* br_vlan.c */
 874 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 875 bool br_allowed_ingress(const struct net_bridge *br,
 876                         struct net_bridge_vlan_group *vg, struct sk_buff *skb,
 877                         u16 *vid);
 878 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
 879                        const struct sk_buff *skb);
 880 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
 881 struct sk_buff *br_handle_vlan(struct net_bridge *br,
 882                                const struct net_bridge_port *port,
 883                                struct net_bridge_vlan_group *vg,
 884                                struct sk_buff *skb);
 885 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
 886                 bool *changed, struct netlink_ext_ack *extack);
 887 int br_vlan_delete(struct net_bridge *br, u16 vid);
 888 void br_vlan_flush(struct net_bridge *br);
 889 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
 890 void br_recalculate_fwd_mask(struct net_bridge *br);
 891 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
 892 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
 893 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
 894 int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
 895 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
 896 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
 897 int br_vlan_init(struct net_bridge *br);
 898 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
 899 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
 900                                struct netlink_ext_ack *extack);
 901 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
 902                  bool *changed, struct netlink_ext_ack *extack);
 903 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
 904 void nbp_vlan_flush(struct net_bridge_port *port);
 905 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
 906 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
 907 void br_vlan_get_stats(const struct net_bridge_vlan *v,
 908                        struct br_vlan_stats *stats);
 909 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
 910 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
 911                          void *ptr);
 912
 913 static inline struct net_bridge_vlan_group *br_vlan_group(
 914                                         const struct net_bridge *br)
 915 {
 916         return rtnl_dereference(br->vlgrp);
 917 }
 918
 919 static inline struct net_bridge_vlan_group *nbp_vlan_group(
 920                                         const struct net_bridge_port *p)
 921 {
 922         return rtnl_dereference(p->vlgrp);
 923 }
 924
 925 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
 926                                         const struct net_bridge *br)
 927 {
 928         return rcu_dereference(br->vlgrp);
 929 }
 930
 931 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
 932                                         const struct net_bridge_port *p)
 933 {
 934         return rcu_dereference(p->vlgrp);
 935 }
 936
 937 /* Since bridge now depends on 8021Q module, but the time bridge sees the
 938  * skb, the vlan tag will always be present if the frame was tagged.
 939  */
 940 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
 941 {
 942         int err = 0;
 943
 944         if (skb_vlan_tag_present(skb)) {
 945                 *vid = skb_vlan_tag_get_id(skb);
 946         } else {
 947                 *vid = 0;
 948                 err = -EINVAL;
 949         }
 950
 951         return err;
 952 }
 953
 954 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
 955 {
 956         if (!vg)
 957                 return 0;
 958
 959         smp_rmb();
 960         return vg->pvid;
 961 }
 962
 963 #else
 964 static inline bool br_allowed_ingress(const struct net_bridge *br,
 965                                       struct net_bridge_vlan_group *vg,
 966                                       struct sk_buff *skb,
 967                                       u16 *vid)
 968 {
 969         return true;
 970 }
 971
 972 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
 973                                      const struct sk_buff *skb)
 974 {
 975         return true;
 976 }
 977
 978 static inline bool br_should_learn(struct net_bridge_port *p,
 979                                    struct sk_buff *skb, u16 *vid)
 980 {
 981         return true;
 982 }
 983
 984 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
 985                                              const struct net_bridge_port *port,
 986                                              struct net_bridge_vlan_group *vg,
 987                                              struct sk_buff *skb)
 988 {
 989         return skb;
 990 }
 991
 992 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
 993                               bool *changed, struct netlink_ext_ack *extack)
 994 {
 995         *changed = false;
 996         return -EOPNOTSUPP;
 997 }
 998
 999 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1000 {
1001         return -EOPNOTSUPP;
1002 }
1003
1004 static inline void br_vlan_flush(struct net_bridge *br)
1005 {
1006 }
1007
1008 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1009 {
1010 }
1011
1012 static inline int br_vlan_init(struct net_bridge *br)
1013 {
1014         return 0;
1015 }
1016
1017 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1018                                bool *changed, struct netlink_ext_ack *extack)
1019 {
1020         *changed = false;
1021         return -EOPNOTSUPP;
1022 }
1023
1024 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1025 {
1026         return -EOPNOTSUPP;
1027 }
1028
1029 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1030 {
1031 }
1032
1033 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1034                                                    u16 vid)
1035 {
1036         return NULL;
1037 }
1038
1039 static inline int nbp_vlan_init(struct net_bridge_port *port,
1040                                 struct netlink_ext_ack *extack)
1041 {
1042         return 0;
1043 }
1044
1045 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1046 {
1047         return 0;
1048 }
1049
1050 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1051 {
1052         return 0;
1053 }
1054
1055 static inline int __br_vlan_filter_toggle(struct net_bridge *br,
1056                                           unsigned long val)
1057 {
1058         return -EOPNOTSUPP;
1059 }
1060
1061 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1062                                          u32 filter_mask)
1063 {
1064         return 0;
1065 }
1066
1067 static inline struct net_bridge_vlan_group *br_vlan_group(
1068                                         const struct net_bridge *br)
1069 {
1070         return NULL;
1071 }
1072
1073 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1074                                         const struct net_bridge_port *p)
1075 {
1076         return NULL;
1077 }
1078
1079 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1080                                         const struct net_bridge *br)
1081 {
1082         return NULL;
1083 }
1084
1085 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1086                                         const struct net_bridge_port *p)
1087 {
1088         return NULL;
1089 }
1090
1091 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1092                                      struct br_vlan_stats *stats)
1093 {
1094 }
1095
1096 static inline void br_vlan_port_event(struct net_bridge_port *p,
1097                                       unsigned long event)
1098 {
1099 }
1100
1101 static inline int br_vlan_bridge_event(struct net_device *dev,
1102                                        unsigned long event, void *ptr)
1103 {
1104         return 0;
1105 }
1106 #endif
1107
1108 struct nf_br_ops {
1109         int (*br_dev_xmit_hook)(struct sk_buff *skb);
1110 };
1111 extern const struct nf_br_ops __rcu *nf_br_ops;
1112
1113 /* br_netfilter.c */
1114 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1115 int br_nf_core_init(void);
1116 void br_nf_core_fini(void);
1117 void br_netfilter_rtable_init(struct net_bridge *);
1118 #else
1119 static inline int br_nf_core_init(void) { return 0; }
1120 static inline void br_nf_core_fini(void) {}
1121 #define br_netfilter_rtable_init(x)
1122 #endif
1123
1124 /* br_stp.c */
1125 void br_set_state(struct net_bridge_port *p, unsigned int state);
1126 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1127 void br_init_port(struct net_bridge_port *p);
1128 void br_become_designated_port(struct net_bridge_port *p);
1129
1130 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1131 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1132 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1133 int br_set_max_age(struct net_bridge *br, unsigned long x);
1134 int __set_ageing_time(struct net_device *dev, unsigned long t);
1135 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1136
1137
1138 /* br_stp_if.c */
1139 void br_stp_enable_bridge(struct net_bridge *br);
1140 void br_stp_disable_bridge(struct net_bridge *br);
1141 void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1142 void br_stp_enable_port(struct net_bridge_port *p);
1143 void br_stp_disable_port(struct net_bridge_port *p);
1144 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1145 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1146 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1147 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1148 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1149 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1150
1151 /* br_stp_bpdu.c */
1152 struct stp_proto;
1153 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1154                 struct net_device *dev);
1155
1156 /* br_stp_timer.c */
1157 void br_stp_timer_init(struct net_bridge *br);
1158 void br_stp_port_timer_init(struct net_bridge_port *p);
1159 unsigned long br_timer_value(const struct timer_list *timer);
1160
1161 /* br.c */
1162 #if IS_ENABLED(CONFIG_ATM_LANE)
1163 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1164 #endif
1165
1166 /* br_netlink.c */
1167 extern struct rtnl_link_ops br_link_ops;
1168 int br_netlink_init(void);
1169 void br_netlink_fini(void);
1170 void br_ifinfo_notify(int event, const struct net_bridge *br,
1171                       const struct net_bridge_port *port);
1172 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
1173                struct netlink_ext_ack *extack);
1174 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
1175 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
1176                u32 filter_mask, int nlflags);
1177
1178 #ifdef CONFIG_SYSFS
1179 /* br_sysfs_if.c */
1180 extern const struct sysfs_ops brport_sysfs_ops;
1181 int br_sysfs_addif(struct net_bridge_port *p);
1182 int br_sysfs_renameif(struct net_bridge_port *p);
1183
1184 /* br_sysfs_br.c */
1185 int br_sysfs_addbr(struct net_device *dev);
1186 void br_sysfs_delbr(struct net_device *dev);
1187
1188 #else
1189
1190 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
1191 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
1192 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
1193 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
1194 #endif /* CONFIG_SYSFS */
1195
1196 /* br_switchdev.c */
1197 #ifdef CONFIG_NET_SWITCHDEV
1198 int nbp_switchdev_mark_set(struct net_bridge_port *p);
1199 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1200                               struct sk_buff *skb);
1201 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1202                                   const struct sk_buff *skb);
1203 int br_switchdev_set_port_flag(struct net_bridge_port *p,
1204                                unsigned long flags,
1205                                unsigned long mask);
1206 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
1207                              int type);
1208 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
1209                                struct netlink_ext_ack *extack);
1210 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
1211
1212 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1213 {
1214         skb->offload_fwd_mark = 0;
1215 }
1216 #else
1217 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
1218 {
1219         return 0;
1220 }
1221
1222 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
1223                                             struct sk_buff *skb)
1224 {
1225 }
1226
1227 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
1228                                                 const struct sk_buff *skb)
1229 {
1230         return true;
1231 }
1232
1233 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
1234                                              unsigned long flags,
1235                                              unsigned long mask)
1236 {
1237         return 0;
1238 }
1239
1240 static inline int br_switchdev_port_vlan_add(struct net_device *dev,
1241                                              u16 vid, u16 flags,
1242                                              struct netlink_ext_ack *extack)
1243 {
1244         return -EOPNOTSUPP;
1245 }
1246
1247 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
1248 {
1249         return -EOPNOTSUPP;
1250 }
1251
1252 static inline void
1253 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
1254 {
1255 }
1256
1257 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
1258 {
1259 }
1260 #endif /* CONFIG_NET_SWITCHDEV */
1261
1262 /* br_arp_nd_proxy.c */
1263 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
1264 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
1265                               u16 vid, struct net_bridge_port *p);
1266 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
1267                        u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
1268 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
1269 #endif