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 <net/pkt_cls.h>
19 #include <linux/if_vlan.h>
20 #include <linux/rhashtable.h>
21 #include <linux/refcount.h>
22
23 #define BR_HASH_BITS 8
24 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
25
26 #define BR_HOLD_TIME (1*HZ)
27
28 #define BR_PORT_BITS 10
29 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
30
31 #define BR_MULTICAST_DEFAULT_HASH_MAX 4096
32 #define BR_MULTICAST_QUERY_INTVL_MIN msecs_to_jiffies(1000)
33 #define BR_MULTICAST_STARTUP_QUERY_INTVL_MIN BR_MULTICAST_QUERY_INTVL_MIN
34
35 #define BR_HWDOM_MAX BITS_PER_LONG
36
37 #define BR_VERSION "2.3"
38
39 /* Control of forwarding link local multicast */
40 #define BR_GROUPFWD_DEFAULT 0
41 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */
42 enum {
43 BR_GROUPFWD_STP = BIT(0),
44 BR_GROUPFWD_MACPAUSE = BIT(1),
45 BR_GROUPFWD_LACP = BIT(2),
46 };
47
48 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \
49 BR_GROUPFWD_LACP)
50 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
51 #define BR_GROUPFWD_8021AD 0xB801u
52
53 /* Path to usermode spanning tree program */
54 #define BR_STP_PROG "/sbin/bridge-stp"
55
56 #define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT)
57
58 typedef struct bridge_id bridge_id;
59 typedef struct mac_addr mac_addr;
60 typedef __u16 port_id;
61
62 struct bridge_id {
63 unsigned char prio[2];
64 unsigned char addr[ETH_ALEN];
65 };
66
67 struct mac_addr {
68 unsigned char addr[ETH_ALEN];
69 };
70
71 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
72 /* our own querier */
73 struct bridge_mcast_own_query {
74 struct timer_list timer;
75 u32 startup_sent;
76 };
77
78 /* other querier */
79 struct bridge_mcast_other_query {
80 struct timer_list timer;
81 struct timer_list delay_timer;
82 };
83
84 /* selected querier */
85 struct bridge_mcast_querier {
86 struct br_ip addr;
87 int port_ifidx;
88 seqcount_spinlock_t seq;
89 };
90
91 /* IGMP/MLD statistics */
92 struct bridge_mcast_stats {
93 struct br_mcast_stats mstats;
94 struct u64_stats_sync syncp;
95 };
96
97 struct br_mdb_src_entry {
98 struct br_ip addr;
99 };
100
101 struct br_mdb_config {
102 struct net_bridge *br;
103 struct net_bridge_port *p;
104 struct br_mdb_entry *entry;
105 struct br_ip group;
106 bool src_entry;
107 u8 filter_mode;
108 u16 nlflags;
109 struct br_mdb_src_entry *src_entries;
110 int num_src_entries;
111 u8 rt_protocol;
112 };
113 #endif
114
115 /* net_bridge_mcast_port must be always defined due to forwarding stubs */
116 struct net_bridge_mcast_port {
117 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
118 struct net_bridge_port *port;
119 struct net_bridge_vlan *vlan;
120
121 struct bridge_mcast_own_query ip4_own_query;
122 struct timer_list ip4_mc_router_timer;
123 struct hlist_node ip4_rlist;
124 #if IS_ENABLED(CONFIG_IPV6)
125 struct bridge_mcast_own_query ip6_own_query;
126 struct timer_list ip6_mc_router_timer;
127 struct hlist_node ip6_rlist;
128 #endif /* IS_ENABLED(CONFIG_IPV6) */
129 unsigned char multicast_router;
130 u32 mdb_n_entries;
131 u32 mdb_max_entries;
132 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
133 };
134
135 /* net_bridge_mcast must be always defined due to forwarding stubs */
136 struct net_bridge_mcast {
137 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
138 struct net_bridge *br;
139 struct net_bridge_vlan *vlan;
140
141 u32 multicast_last_member_count;
142 u32 multicast_startup_query_count;
143
144 u8 multicast_querier;
145 u8 multicast_igmp_version;
146 u8 multicast_router;
147 #if IS_ENABLED(CONFIG_IPV6)
148 u8 multicast_mld_version;
149 #endif
150 unsigned long multicast_last_member_interval;
151 unsigned long multicast_membership_interval;
152 unsigned long multicast_querier_interval;
153 unsigned long multicast_query_interval;
154 unsigned long multicast_query_response_interval;
155 unsigned long multicast_startup_query_interval;
156 struct hlist_head ip4_mc_router_list;
157 struct timer_list ip4_mc_router_timer;
158 struct bridge_mcast_other_query ip4_other_query;
159 struct bridge_mcast_own_query ip4_own_query;
160 struct bridge_mcast_querier ip4_querier;
161 #if IS_ENABLED(CONFIG_IPV6)
162 struct hlist_head ip6_mc_router_list;
163 struct timer_list ip6_mc_router_timer;
164 struct bridge_mcast_other_query ip6_other_query;
165 struct bridge_mcast_own_query ip6_own_query;
166 struct bridge_mcast_querier ip6_querier;
167 #endif /* IS_ENABLED(CONFIG_IPV6) */
168 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
169 };
170
171 struct br_tunnel_info {
172 __be64 tunnel_id;
173 struct metadata_dst __rcu *tunnel_dst;
174 };
175
176 /* private vlan flags */
177 enum {
178 BR_VLFLAG_PER_PORT_STATS = BIT(0),
179 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1),
180 BR_VLFLAG_MCAST_ENABLED = BIT(2),
181 BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3),
182 BR_VLFLAG_NEIGH_SUPPRESS_ENABLED = BIT(4),
183 };
184
185 /**
186 * struct net_bridge_vlan - per-vlan entry
187 *
188 * @vnode: rhashtable member
189 * @vid: VLAN id
190 * @flags: bridge vlan flags
191 * @priv_flags: private (in-kernel) bridge vlan flags
192 * @state: STP state (e.g. blocking, learning, forwarding)
193 * @stats: per-cpu VLAN statistics
194 * @br: if MASTER flag set, this points to a bridge struct
195 * @port: if MASTER flag unset, this points to a port struct
196 * @refcnt: if MASTER flag set, this is bumped for each port referencing it
197 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context
198 * for this VLAN entry
199 * @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context
200 * @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast
201 * context
202 * @msti: if MASTER flag set, this holds the VLANs MST instance
203 * @vlist: sorted list of VLAN entries
204 * @rcu: used for entry destruction
205 *
206 * This structure is shared between the global per-VLAN entries contained in
207 * the bridge rhashtable and the local per-port per-VLAN entries contained in
208 * the port's rhashtable. The union entries should be interpreted depending on
209 * the entry flags that are set.
210 */
211 struct net_bridge_vlan {
212 struct rhash_head vnode;
213 struct rhash_head tnode;
214 u16 vid;
215 u16 flags;
216 u16 priv_flags;
217 u8 state;
218 struct pcpu_sw_netstats __percpu *stats;
219 union {
220 struct net_bridge *br;
221 struct net_bridge_port *port;
222 };
223 union {
224 refcount_t refcnt;
225 struct net_bridge_vlan *brvlan;
226 };
227
228 struct br_tunnel_info tinfo;
229
230 union {
231 struct net_bridge_mcast br_mcast_ctx;
232 struct net_bridge_mcast_port port_mcast_ctx;
233 };
234
235 u16 msti;
236
237 struct list_head vlist;
238
239 struct rcu_head rcu;
240 };
241
242 /**
243 * struct net_bridge_vlan_group
244 *
245 * @vlan_hash: VLAN entry rhashtable
246 * @vlan_list: sorted VLAN entry list
247 * @num_vlans: number of total VLAN entries
248 * @pvid: PVID VLAN id
249 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking)
250 *
251 * IMPORTANT: Be careful when checking if there're VLAN entries using list
252 * primitives because the bridge can have entries in its list which
253 * are just for global context but not for filtering, i.e. they have
254 * the master flag set but not the brentry flag. If you have to check
255 * if there're "real" entries in the bridge please test @num_vlans
256 */
257 struct net_bridge_vlan_group {
258 struct rhashtable vlan_hash;
259 struct rhashtable tunnel_hash;
260 struct list_head vlan_list;
261 u16 num_vlans;
262 u16 pvid;
263 u8 pvid_state;
264 };
265
266 /* bridge fdb flags */
267 enum {
268 BR_FDB_LOCAL,
269 BR_FDB_STATIC,
270 BR_FDB_STICKY,
271 BR_FDB_ADDED_BY_USER,
272 BR_FDB_ADDED_BY_EXT_LEARN,
273 BR_FDB_OFFLOADED,
274 BR_FDB_NOTIFY,
275 BR_FDB_NOTIFY_INACTIVE,
276 BR_FDB_LOCKED,
277 };
278
279 struct net_bridge_fdb_key {
280 mac_addr addr;
281 u16 vlan_id;
282 };
283
284 struct net_bridge_fdb_entry {
285 struct rhash_head rhnode;
286 struct net_bridge_port *dst;
287
288 struct net_bridge_fdb_key key;
289 struct hlist_node fdb_node;
290 unsigned long flags;
291
292 /* write-heavy members should not affect lookups */
293 unsigned long updated ____cacheline_aligned_in_smp;
294 unsigned long used;
295
296 struct rcu_head rcu;
297 };
298
299 struct net_bridge_fdb_flush_desc {
300 unsigned long flags;
301 unsigned long flags_mask;
302 int port_ifindex;
303 u16 vlan_id;
304 };
305
306 #define MDB_PG_FLAGS_PERMANENT BIT(0)
307 #define MDB_PG_FLAGS_OFFLOAD BIT(1)
308 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2)
309 #define MDB_PG_FLAGS_STAR_EXCL BIT(3)
310 #define MDB_PG_FLAGS_BLOCKED BIT(4)
311
312 #define PG_SRC_ENT_LIMIT 32
313
314 #define BR_SGRP_F_DELETE BIT(0)
315 #define BR_SGRP_F_SEND BIT(1)
316 #define BR_SGRP_F_INSTALLED BIT(2)
317 #define BR_SGRP_F_USER_ADDED BIT(3)
318
319 struct net_bridge_mcast_gc {
320 struct hlist_node gc_node;
321 void (*destroy)(struct net_bridge_mcast_gc *gc);
322 };
323
324 struct net_bridge_group_src {
325 struct hlist_node node;
326
327 struct br_ip addr;
328 struct net_bridge_port_group *pg;
329 u8 flags;
330 u8 src_query_rexmit_cnt;
331 struct timer_list timer;
332
333 struct net_bridge *br;
334 struct net_bridge_mcast_gc mcast_gc;
335 struct rcu_head rcu;
336 };
337
338 struct net_bridge_port_group_sg_key {
339 struct net_bridge_port *port;
340 struct br_ip addr;
341 };
342
343 struct net_bridge_port_group {
344 struct net_bridge_port_group __rcu *next;
345 struct net_bridge_port_group_sg_key key;
346 unsigned char eth_addr[ETH_ALEN] __aligned(2);
347 unsigned char flags;
348 unsigned char filter_mode;
349 unsigned char grp_query_rexmit_cnt;
350 unsigned char rt_protocol;
351
352 struct hlist_head src_list;
353 unsigned int src_ents;
354 struct timer_list timer;
355 struct timer_list rexmit_timer;
356 struct hlist_node mglist;
357 struct rb_root eht_set_tree;
358 struct rb_root eht_host_tree;
359
360 struct rhash_head rhnode;
361 struct net_bridge_mcast_gc mcast_gc;
362 struct rcu_head rcu;
363 };
364
365 struct net_bridge_mdb_entry {
366 struct rhash_head rhnode;
367 struct net_bridge *br;
368 struct net_bridge_port_group __rcu *ports;
369 struct br_ip addr;
370 bool host_joined;
371
372 struct timer_list timer;
373 struct hlist_node mdb_node;
374
375 struct net_bridge_mcast_gc mcast_gc;
376 struct rcu_head rcu;
377 };
378
379 struct net_bridge_port {
380 struct net_bridge *br;
381 struct net_device *dev;
382 netdevice_tracker dev_tracker;
383 struct list_head list;
384
385 unsigned long flags;
386 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
387 struct net_bridge_vlan_group __rcu *vlgrp;
388 #endif
389 struct net_bridge_port __rcu *backup_port;
390 u32 backup_nhid;
391
392 /* STP */
393 u8 priority;
394 u8 state;
395 u16 port_no;
396 unsigned char topology_change_ack;
397 unsigned char config_pending;
398 port_id port_id;
399 port_id designated_port;
400 bridge_id designated_root;
401 bridge_id designated_bridge;
402 u32 path_cost;
403 u32 designated_cost;
404 unsigned long designated_age;
405
406 struct timer_list forward_delay_timer;
407 struct timer_list hold_timer;
408 struct timer_list message_age_timer;
409 struct kobject kobj;
410 struct rcu_head rcu;
411
412 struct net_bridge_mcast_port multicast_ctx;
413
414 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
415 struct bridge_mcast_stats __percpu *mcast_stats;
416
417 u32 multicast_eht_hosts_limit;
418 u32 multicast_eht_hosts_cnt;
419 struct hlist_head mglist;
420 #endif
421
422 #ifdef CONFIG_SYSFS
423 char sysfs_name[IFNAMSIZ];
424 #endif
425
426 #ifdef CONFIG_NET_POLL_CONTROLLER
427 struct netpoll *np;
428 #endif
429 #ifdef CONFIG_NET_SWITCHDEV
430 /* Identifier used to group ports that share the same switchdev
431 * hardware domain.
432 */
433 int hwdom;
434 int offload_count;
435 struct netdev_phys_item_id ppid;
436 #endif
437 u16 group_fwd_mask;
438 u16 backup_redirected_cnt;
439
440 struct bridge_stp_xstats stp_xstats;
441 };
442
443 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
444
445 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
446 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
447
br_port_get_rcu(const struct net_device * dev)448 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
449 {
450 return rcu_dereference(dev->rx_handler_data);
451 }
452
br_port_get_rtnl(const struct net_device * dev)453 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
454 {
455 return netif_is_bridge_port(dev) ?
456 rtnl_dereference(dev->rx_handler_data) : NULL;
457 }
458
br_port_get_rtnl_rcu(const struct net_device * dev)459 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
460 {
461 return netif_is_bridge_port(dev) ?
462 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
463 }
464
465 enum net_bridge_opts {
466 BROPT_VLAN_ENABLED,
467 BROPT_VLAN_STATS_ENABLED,
468 BROPT_NF_CALL_IPTABLES,
469 BROPT_NF_CALL_IP6TABLES,
470 BROPT_NF_CALL_ARPTABLES,
471 BROPT_GROUP_ADDR_SET,
472 BROPT_MULTICAST_ENABLED,
473 BROPT_MULTICAST_QUERY_USE_IFADDR,
474 BROPT_MULTICAST_STATS_ENABLED,
475 BROPT_HAS_IPV6_ADDR,
476 BROPT_NEIGH_SUPPRESS_ENABLED,
477 BROPT_MTU_SET_BY_USER,
478 BROPT_VLAN_STATS_PER_PORT,
479 BROPT_NO_LL_LEARN,
480 BROPT_VLAN_BRIDGE_BINDING,
481 BROPT_MCAST_VLAN_SNOOPING_ENABLED,
482 BROPT_MST_ENABLED,
483 };
484
485 struct net_bridge {
486 spinlock_t lock;
487 spinlock_t hash_lock;
488 struct hlist_head frame_type_list;
489 struct net_device *dev;
490 unsigned long options;
491 /* These fields are accessed on each packet */
492 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
493 __be16 vlan_proto;
494 u16 default_pvid;
495 struct net_bridge_vlan_group __rcu *vlgrp;
496 #endif
497
498 struct rhashtable fdb_hash_tbl;
499 struct list_head port_list;
500 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
501 union {
502 struct rtable fake_rtable;
503 struct rt6_info fake_rt6_info;
504 };
505 #endif
506 u16 group_fwd_mask;
507 u16 group_fwd_mask_required;
508
509 /* STP */
510 bridge_id designated_root;
511 bridge_id bridge_id;
512 unsigned char topology_change;
513 unsigned char topology_change_detected;
514 u16 root_port;
515 unsigned long max_age;
516 unsigned long hello_time;
517 unsigned long forward_delay;
518 unsigned long ageing_time;
519 unsigned long bridge_max_age;
520 unsigned long bridge_hello_time;
521 unsigned long bridge_forward_delay;
522 unsigned long bridge_ageing_time;
523 u32 root_path_cost;
524
525 u8 group_addr[ETH_ALEN];
526
527 enum {
528 BR_NO_STP, /* no spanning tree */
529 BR_KERNEL_STP, /* old STP in kernel */
530 BR_USER_STP, /* new RSTP in userspace */
531 } stp_enabled;
532
533 struct net_bridge_mcast multicast_ctx;
534
535 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
536 struct bridge_mcast_stats __percpu *mcast_stats;
537
538 u32 hash_max;
539
540 spinlock_t multicast_lock;
541
542 struct rhashtable mdb_hash_tbl;
543 struct rhashtable sg_port_tbl;
544
545 struct hlist_head mcast_gc_list;
546 struct hlist_head mdb_list;
547
548 struct work_struct mcast_gc_work;
549 #endif
550
551 struct timer_list hello_timer;
552 struct timer_list tcn_timer;
553 struct timer_list topology_change_timer;
554 struct delayed_work gc_work;
555 struct kobject *ifobj;
556 u32 auto_cnt;
557
558 #ifdef CONFIG_NET_SWITCHDEV
559 /* Counter used to make sure that hardware domains get unique
560 * identifiers in case a bridge spans multiple switchdev instances.
561 */
562 int last_hwdom;
563 /* Bit mask of hardware domain numbers in use */
564 unsigned long busy_hwdoms;
565 #endif
566 struct hlist_head fdb_list;
567
568 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
569 struct hlist_head mrp_list;
570 #endif
571 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
572 struct hlist_head mep_list;
573 #endif
574 };
575
576 struct br_input_skb_cb {
577 struct net_device *brdev;
578
579 u16 frag_max_size;
580 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
581 u8 igmp;
582 u8 mrouters_only:1;
583 #endif
584 u8 proxyarp_replied:1;
585 u8 src_port_isolated:1;
586 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
587 u8 vlan_filtered:1;
588 #endif
589 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
590 u8 br_netfilter_broute:1;
591 #endif
592
593 #ifdef CONFIG_NET_SWITCHDEV
594 /* Set if TX data plane offloading is used towards at least one
595 * hardware domain.
596 */
597 u8 tx_fwd_offload:1;
598 /* The switchdev hardware domain from which this packet was received.
599 * If skb->offload_fwd_mark was set, then this packet was already
600 * forwarded by hardware to the other ports in the source hardware
601 * domain, otherwise it wasn't.
602 */
603 int src_hwdom;
604 /* Bit mask of hardware domains towards this packet has already been
605 * transmitted using the TX data plane offload.
606 */
607 unsigned long fwd_hwdoms;
608 #endif
609
610 u32 backup_nhid;
611 };
612
613 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
614
615 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
616 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
617 #else
618 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
619 #endif
620
621 #define br_printk(level, br, format, args...) \
622 printk(level "%s: " format, (br)->dev->name, ##args)
623
624 #define br_err(__br, format, args...) \
625 br_printk(KERN_ERR, __br, format, ##args)
626 #define br_warn(__br, format, args...) \
627 br_printk(KERN_WARNING, __br, format, ##args)
628 #define br_notice(__br, format, args...) \
629 br_printk(KERN_NOTICE, __br, format, ##args)
630 #define br_info(__br, format, args...) \
631 br_printk(KERN_INFO, __br, format, ##args)
632
633 #define br_debug(br, format, args...) \
634 pr_debug("%s: " format, (br)->dev->name, ##args)
635
636 /* called under bridge lock */
br_is_root_bridge(const struct net_bridge * br)637 static inline int br_is_root_bridge(const struct net_bridge *br)
638 {
639 return !memcmp(&br->bridge_id, &br->designated_root, 8);
640 }
641
642 /* check if a VLAN entry is global */
br_vlan_is_master(const struct net_bridge_vlan * v)643 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
644 {
645 return v->flags & BRIDGE_VLAN_INFO_MASTER;
646 }
647
648 /* check if a VLAN entry is used by the bridge */
br_vlan_is_brentry(const struct net_bridge_vlan * v)649 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
650 {
651 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
652 }
653
654 /* check if we should use the vlan entry, returns false if it's only context */
br_vlan_should_use(const struct net_bridge_vlan * v)655 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
656 {
657 if (br_vlan_is_master(v)) {
658 if (br_vlan_is_brentry(v))
659 return true;
660 else
661 return false;
662 }
663
664 return true;
665 }
666
nbp_state_should_learn(const struct net_bridge_port * p)667 static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
668 {
669 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
670 }
671
br_vlan_valid_id(u16 vid,struct netlink_ext_ack * extack)672 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack)
673 {
674 bool ret = vid > 0 && vid < VLAN_VID_MASK;
675
676 if (!ret)
677 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid");
678
679 return ret;
680 }
681
br_vlan_valid_range(const struct bridge_vlan_info * cur,const struct bridge_vlan_info * last,struct netlink_ext_ack * extack)682 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur,
683 const struct bridge_vlan_info *last,
684 struct netlink_ext_ack *extack)
685 {
686 /* pvid flag is not allowed in ranges */
687 if (cur->flags & BRIDGE_VLAN_INFO_PVID) {
688 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range");
689 return false;
690 }
691
692 /* when cur is the range end, check if:
693 * - it has range start flag
694 * - range ids are invalid (end is equal to or before start)
695 */
696 if (last) {
697 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
698 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one");
699 return false;
700 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) {
701 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing");
702 return false;
703 } else if (cur->vid <= last->vid) {
704 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
705 return false;
706 }
707 }
708
709 /* check for required range flags */
710 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
711 BRIDGE_VLAN_INFO_RANGE_END))) {
712 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing");
713 return false;
714 }
715
716 return true;
717 }
718
br_vlan_multicast_router(const struct net_bridge_vlan * v)719 static inline u8 br_vlan_multicast_router(const struct net_bridge_vlan *v)
720 {
721 u8 mcast_router = MDB_RTR_TYPE_DISABLED;
722
723 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
724 if (!br_vlan_is_master(v))
725 mcast_router = v->port_mcast_ctx.multicast_router;
726 else
727 mcast_router = v->br_mcast_ctx.multicast_router;
728 #endif
729
730 return mcast_router;
731 }
732
br_afspec_cmd_to_rtm(int cmd)733 static inline int br_afspec_cmd_to_rtm(int cmd)
734 {
735 switch (cmd) {
736 case RTM_SETLINK:
737 return RTM_NEWVLAN;
738 case RTM_DELLINK:
739 return RTM_DELVLAN;
740 }
741
742 return 0;
743 }
744
br_opt_get(const struct net_bridge * br,enum net_bridge_opts opt)745 static inline int br_opt_get(const struct net_bridge *br,
746 enum net_bridge_opts opt)
747 {
748 return test_bit(opt, &br->options);
749 }
750
751 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
752 struct netlink_ext_ack *extack);
753 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
754 int br_boolopt_multi_toggle(struct net_bridge *br,
755 struct br_boolopt_multi *bm,
756 struct netlink_ext_ack *extack);
757 void br_boolopt_multi_get(const struct net_bridge *br,
758 struct br_boolopt_multi *bm);
759 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
760
761 #if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
br_tc_skb_miss_set(struct sk_buff * skb,bool miss)762 static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
763 {
764 struct tc_skb_ext *ext;
765
766 if (!tc_skb_ext_tc_enabled())
767 return;
768
769 ext = skb_ext_find(skb, TC_SKB_EXT);
770 if (ext) {
771 ext->l2_miss = miss;
772 return;
773 }
774 if (!miss)
775 return;
776 ext = tc_skb_ext_alloc(skb);
777 if (!ext)
778 return;
779 ext->l2_miss = true;
780 }
781 #else
br_tc_skb_miss_set(struct sk_buff * skb,bool miss)782 static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
783 {
784 }
785 #endif
786
787 /* br_device.c */
788 void br_dev_setup(struct net_device *dev);
789 void br_dev_delete(struct net_device *dev, struct list_head *list);
790 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
791 #ifdef CONFIG_NET_POLL_CONTROLLER
br_netpoll_send_skb(const struct net_bridge_port * p,struct sk_buff * skb)792 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
793 struct sk_buff *skb)
794 {
795 netpoll_send_skb(p->np, skb);
796 }
797
798 int br_netpoll_enable(struct net_bridge_port *p);
799 void br_netpoll_disable(struct net_bridge_port *p);
800 #else
br_netpoll_send_skb(const struct net_bridge_port * p,struct sk_buff * skb)801 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
802 struct sk_buff *skb)
803 {
804 }
805
br_netpoll_enable(struct net_bridge_port * p)806 static inline int br_netpoll_enable(struct net_bridge_port *p)
807 {
808 return 0;
809 }
810
br_netpoll_disable(struct net_bridge_port * p)811 static inline void br_netpoll_disable(struct net_bridge_port *p)
812 {
813 }
814 #endif
815
816 /* br_fdb.c */
817 #define FDB_FLUSH_IGNORED_NDM_FLAGS (NTF_MASTER | NTF_SELF)
818 #define FDB_FLUSH_ALLOWED_NDM_STATES (NUD_PERMANENT | NUD_NOARP)
819 #define FDB_FLUSH_ALLOWED_NDM_FLAGS (NTF_USE | NTF_EXT_LEARNED | \
820 NTF_STICKY | NTF_OFFLOADED)
821
822 int br_fdb_init(void);
823 void br_fdb_fini(void);
824 int br_fdb_hash_init(struct net_bridge *br);
825 void br_fdb_hash_fini(struct net_bridge *br);
826 void br_fdb_flush(struct net_bridge *br,
827 const struct net_bridge_fdb_flush_desc *desc);
828 void br_fdb_find_delete_local(struct net_bridge *br,
829 const struct net_bridge_port *p,
830 const unsigned char *addr, u16 vid);
831 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
832 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
833 void br_fdb_cleanup(struct work_struct *work);
834 void br_fdb_delete_by_port(struct net_bridge *br,
835 const struct net_bridge_port *p, u16 vid, int do_all);
836 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
837 const unsigned char *addr,
838 __u16 vid);
839 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
840 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
841 unsigned long off);
842 int br_fdb_add_local(struct net_bridge *br, struct net_bridge_port *source,
843 const unsigned char *addr, u16 vid);
844 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
845 const unsigned char *addr, u16 vid, unsigned long flags);
846
847 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
848 struct net_device *dev, const unsigned char *addr, u16 vid,
849 struct netlink_ext_ack *extack);
850 int br_fdb_delete_bulk(struct ndmsg *ndm, struct nlattr *tb[],
851 struct net_device *dev, u16 vid,
852 struct netlink_ext_ack *extack);
853 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
854 const unsigned char *addr, u16 vid, u16 nlh_flags,
855 struct netlink_ext_ack *extack);
856 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
857 struct net_device *dev, struct net_device *fdev, int *idx);
858 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
859 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
860 struct netlink_ext_ack *extack);
861 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
862 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
863 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
864 const unsigned char *addr, u16 vid,
865 bool locked, bool swdev_notify);
866 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
867 const unsigned char *addr, u16 vid,
868 bool swdev_notify);
869 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
870 const unsigned char *addr, u16 vid, bool offloaded);
871
872 /* br_forward.c */
873 enum br_pkt_type {
874 BR_PKT_UNICAST,
875 BR_PKT_MULTICAST,
876 BR_PKT_BROADCAST
877 };
878 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
879 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
880 bool local_rcv, bool local_orig);
881 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
882 void br_flood(struct net_bridge *br, struct sk_buff *skb,
883 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig,
884 u16 vid);
885
886 /* return true if both source port and dest port are isolated */
br_skb_isolated(const struct net_bridge_port * to,const struct sk_buff * skb)887 static inline bool br_skb_isolated(const struct net_bridge_port *to,
888 const struct sk_buff *skb)
889 {
890 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
891 (to->flags & BR_ISOLATED);
892 }
893
894 /* br_if.c */
895 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
896 int br_add_bridge(struct net *net, const char *name);
897 int br_del_bridge(struct net *net, const char *name);
898 int br_add_if(struct net_bridge *br, struct net_device *dev,
899 struct netlink_ext_ack *extack);
900 int br_del_if(struct net_bridge *br, struct net_device *dev);
901 void br_mtu_auto_adjust(struct net_bridge *br);
902 netdev_features_t br_features_recompute(struct net_bridge *br,
903 netdev_features_t features);
904 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
905 void br_manage_promisc(struct net_bridge *br);
906 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
907
908 /* br_input.c */
909 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
910 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev);
911
912 struct br_frame_type {
913 __be16 type;
914 int (*frame_handler)(struct net_bridge_port *port,
915 struct sk_buff *skb);
916 struct hlist_node list;
917 };
918
919 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft);
920 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft);
921
br_rx_handler_check_rcu(const struct net_device * dev)922 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
923 {
924 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev);
925 }
926
br_rx_handler_check_rtnl(const struct net_device * dev)927 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
928 {
929 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev);
930 }
931
br_port_get_check_rcu(const struct net_device * dev)932 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
933 {
934 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
935 }
936
937 static inline struct net_bridge_port *
br_port_get_check_rtnl(const struct net_device * dev)938 br_port_get_check_rtnl(const struct net_device *dev)
939 {
940 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
941 }
942
943 /* br_ioctl.c */
944 int br_dev_siocdevprivate(struct net_device *dev, struct ifreq *rq,
945 void __user *data, int cmd);
946 int br_ioctl_stub(struct net *net, struct net_bridge *br, unsigned int cmd,
947 struct ifreq *ifr, void __user *uarg);
948
949 /* br_multicast.c */
950 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
951 int br_multicast_rcv(struct net_bridge_mcast **brmctx,
952 struct net_bridge_mcast_port **pmctx,
953 struct net_bridge_vlan *vlan,
954 struct sk_buff *skb, u16 vid);
955 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx,
956 struct sk_buff *skb, u16 vid);
957 int br_multicast_add_port(struct net_bridge_port *port);
958 void br_multicast_del_port(struct net_bridge_port *port);
959 void br_multicast_enable_port(struct net_bridge_port *port);
960 void br_multicast_disable_port(struct net_bridge_port *port);
961 void br_multicast_init(struct net_bridge *br);
962 void br_multicast_join_snoopers(struct net_bridge *br);
963 void br_multicast_leave_snoopers(struct net_bridge *br);
964 void br_multicast_open(struct net_bridge *br);
965 void br_multicast_stop(struct net_bridge *br);
966 void br_multicast_dev_del(struct net_bridge *br);
967 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb,
968 struct net_bridge_mcast *brmctx,
969 bool local_rcv, bool local_orig);
970 int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val);
971 int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx,
972 unsigned long val);
973 int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router);
974 int br_multicast_toggle(struct net_bridge *br, unsigned long val,
975 struct netlink_ext_ack *extack);
976 int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val);
977 int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx,
978 unsigned long val);
979 #if IS_ENABLED(CONFIG_IPV6)
980 int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx,
981 unsigned long val);
982 #endif
983 struct net_bridge_mdb_entry *
984 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
985 struct net_bridge_mdb_entry *
986 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
987 struct net_bridge_port_group *
988 br_multicast_new_port_group(struct net_bridge_port *port,
989 const struct br_ip *group,
990 struct net_bridge_port_group __rcu *next,
991 unsigned char flags, const unsigned char *src,
992 u8 filter_mode, u8 rt_protocol,
993 struct netlink_ext_ack *extack);
994 void br_multicast_del_port_group(struct net_bridge_port_group *p);
995 int br_mdb_hash_init(struct net_bridge *br);
996 void br_mdb_hash_fini(struct net_bridge *br);
997 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
998 struct net_bridge_port_group *pg, int type);
999 void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx,
1000 int type);
1001 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
1002 struct net_bridge_port_group *pg,
1003 struct net_bridge_port_group __rcu **pp);
1004 void br_multicast_count(struct net_bridge *br,
1005 const struct net_bridge_port *p,
1006 const struct sk_buff *skb, u8 type, u8 dir);
1007 int br_multicast_init_stats(struct net_bridge *br);
1008 void br_multicast_uninit_stats(struct net_bridge *br);
1009 void br_multicast_get_stats(const struct net_bridge *br,
1010 const struct net_bridge_port *p,
1011 struct br_mcast_stats *dest);
1012 u32 br_multicast_ngroups_get(const struct net_bridge_mcast_port *pmctx);
1013 void br_multicast_ngroups_set_max(struct net_bridge_mcast_port *pmctx, u32 max);
1014 u32 br_multicast_ngroups_get_max(const struct net_bridge_mcast_port *pmctx);
1015 int br_mdb_add(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
1016 struct netlink_ext_ack *extack);
1017 int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
1018 struct netlink_ext_ack *extack);
1019 int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
1020 struct netlink_callback *cb);
1021 void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
1022 struct net_bridge_mdb_entry *mp, bool notify);
1023 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
1024 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
1025 u8 filter_mode);
1026 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
1027 struct net_bridge_port_group *sg);
1028 struct net_bridge_group_src *
1029 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip);
1030 struct net_bridge_group_src *
1031 br_multicast_new_group_src(struct net_bridge_port_group *pg,
1032 struct br_ip *src_ip);
1033 void __br_multicast_del_group_src(struct net_bridge_group_src *src);
1034 void br_multicast_del_group_src(struct net_bridge_group_src *src,
1035 bool fastleave);
1036 void br_multicast_ctx_init(struct net_bridge *br,
1037 struct net_bridge_vlan *vlan,
1038 struct net_bridge_mcast *brmctx);
1039 void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx);
1040 void br_multicast_port_ctx_init(struct net_bridge_port *port,
1041 struct net_bridge_vlan *vlan,
1042 struct net_bridge_mcast_port *pmctx);
1043 void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx);
1044 void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on);
1045 int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on,
1046 struct netlink_ext_ack *extack);
1047 bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on);
1048
1049 int br_rports_fill_info(struct sk_buff *skb,
1050 const struct net_bridge_mcast *brmctx);
1051 int br_multicast_dump_querier_state(struct sk_buff *skb,
1052 const struct net_bridge_mcast *brmctx,
1053 int nest_attr);
1054 size_t br_multicast_querier_state_size(void);
1055 size_t br_rports_size(const struct net_bridge_mcast *brmctx);
1056 void br_multicast_set_query_intvl(struct net_bridge_mcast *brmctx,
1057 unsigned long val);
1058 void br_multicast_set_startup_query_intvl(struct net_bridge_mcast *brmctx,
1059 unsigned long val);
1060
br_group_is_l2(const struct br_ip * group)1061 static inline bool br_group_is_l2(const struct br_ip *group)
1062 {
1063 return group->proto == 0;
1064 }
1065
1066 #define mlock_dereference(X, br) \
1067 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
1068
1069 static inline struct hlist_node *
br_multicast_get_first_rport_node(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1070 br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx,
1071 struct sk_buff *skb)
1072 {
1073 #if IS_ENABLED(CONFIG_IPV6)
1074 if (skb->protocol == htons(ETH_P_IPV6))
1075 return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list));
1076 #endif
1077 return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list));
1078 }
1079
1080 static inline struct net_bridge_port *
br_multicast_rport_from_node_skb(struct hlist_node * rp,struct sk_buff * skb)1081 br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb)
1082 {
1083 struct net_bridge_mcast_port *mctx;
1084
1085 #if IS_ENABLED(CONFIG_IPV6)
1086 if (skb->protocol == htons(ETH_P_IPV6))
1087 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
1088 ip6_rlist);
1089 else
1090 #endif
1091 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
1092 ip4_rlist);
1093
1094 if (mctx)
1095 return mctx->port;
1096 else
1097 return NULL;
1098 }
1099
br_ip4_multicast_is_router(struct net_bridge_mcast * brmctx)1100 static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx)
1101 {
1102 return timer_pending(&brmctx->ip4_mc_router_timer);
1103 }
1104
br_ip6_multicast_is_router(struct net_bridge_mcast * brmctx)1105 static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx)
1106 {
1107 #if IS_ENABLED(CONFIG_IPV6)
1108 return timer_pending(&brmctx->ip6_mc_router_timer);
1109 #else
1110 return false;
1111 #endif
1112 }
1113
1114 static inline bool
br_multicast_is_router(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1115 br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb)
1116 {
1117 switch (brmctx->multicast_router) {
1118 case MDB_RTR_TYPE_PERM:
1119 return true;
1120 case MDB_RTR_TYPE_TEMP_QUERY:
1121 if (skb) {
1122 if (skb->protocol == htons(ETH_P_IP))
1123 return br_ip4_multicast_is_router(brmctx);
1124 else if (skb->protocol == htons(ETH_P_IPV6))
1125 return br_ip6_multicast_is_router(brmctx);
1126 } else {
1127 return br_ip4_multicast_is_router(brmctx) ||
1128 br_ip6_multicast_is_router(brmctx);
1129 }
1130 fallthrough;
1131 default:
1132 return false;
1133 }
1134 }
1135
1136 static inline bool
__br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct bridge_mcast_other_query * querier,const bool is_ipv6)1137 __br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1138 struct bridge_mcast_other_query *querier,
1139 const bool is_ipv6)
1140 {
1141 bool own_querier_enabled;
1142
1143 if (brmctx->multicast_querier) {
1144 if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR))
1145 own_querier_enabled = false;
1146 else
1147 own_querier_enabled = true;
1148 } else {
1149 own_querier_enabled = false;
1150 }
1151
1152 return !timer_pending(&querier->delay_timer) &&
1153 (own_querier_enabled || timer_pending(&querier->timer));
1154 }
1155
br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct ethhdr * eth,const struct net_bridge_mdb_entry * mdb)1156 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1157 struct ethhdr *eth,
1158 const struct net_bridge_mdb_entry *mdb)
1159 {
1160 switch (eth->h_proto) {
1161 case (htons(ETH_P_IP)):
1162 return __br_multicast_querier_exists(brmctx,
1163 &brmctx->ip4_other_query, false);
1164 #if IS_ENABLED(CONFIG_IPV6)
1165 case (htons(ETH_P_IPV6)):
1166 return __br_multicast_querier_exists(brmctx,
1167 &brmctx->ip6_other_query, true);
1168 #endif
1169 default:
1170 return !!mdb && br_group_is_l2(&mdb->addr);
1171 }
1172 }
1173
br_multicast_is_star_g(const struct br_ip * ip)1174 static inline bool br_multicast_is_star_g(const struct br_ip *ip)
1175 {
1176 switch (ip->proto) {
1177 case htons(ETH_P_IP):
1178 return ipv4_is_zeronet(ip->src.ip4);
1179 #if IS_ENABLED(CONFIG_IPV6)
1180 case htons(ETH_P_IPV6):
1181 return ipv6_addr_any(&ip->src.ip6);
1182 #endif
1183 default:
1184 return false;
1185 }
1186 }
1187
1188 static inline bool
br_multicast_should_handle_mode(const struct net_bridge_mcast * brmctx,__be16 proto)1189 br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx,
1190 __be16 proto)
1191 {
1192 switch (proto) {
1193 case htons(ETH_P_IP):
1194 return !!(brmctx->multicast_igmp_version == 3);
1195 #if IS_ENABLED(CONFIG_IPV6)
1196 case htons(ETH_P_IPV6):
1197 return !!(brmctx->multicast_mld_version == 2);
1198 #endif
1199 default:
1200 return false;
1201 }
1202 }
1203
br_multicast_igmp_type(const struct sk_buff * skb)1204 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1205 {
1206 return BR_INPUT_SKB_CB(skb)->igmp;
1207 }
1208
br_multicast_lmqt(const struct net_bridge_mcast * brmctx)1209 static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx)
1210 {
1211 return brmctx->multicast_last_member_interval *
1212 brmctx->multicast_last_member_count;
1213 }
1214
br_multicast_gmi(const struct net_bridge_mcast * brmctx)1215 static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx)
1216 {
1217 return brmctx->multicast_membership_interval;
1218 }
1219
1220 static inline bool
br_multicast_ctx_is_vlan(const struct net_bridge_mcast * brmctx)1221 br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx)
1222 {
1223 return !!brmctx->vlan;
1224 }
1225
1226 static inline bool
br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port * pmctx)1227 br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx)
1228 {
1229 return !!pmctx->vlan;
1230 }
1231
1232 static inline struct net_bridge_mcast *
br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port * pmctx)1233 br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx)
1234 {
1235 if (!br_multicast_port_ctx_is_vlan(pmctx))
1236 return &pmctx->port->br->multicast_ctx;
1237 else
1238 return &pmctx->vlan->brvlan->br_mcast_ctx;
1239 }
1240
1241 static inline bool
br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast * brmctx)1242 br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx)
1243 {
1244 return br_multicast_ctx_is_vlan(brmctx) &&
1245 (!br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) ||
1246 !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED));
1247 }
1248
1249 static inline bool
br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast * brmctx)1250 br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx)
1251 {
1252 return br_multicast_ctx_is_vlan(brmctx) &&
1253 !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
1254 }
1255
1256 static inline bool
br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port * pmctx)1257 br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx)
1258 {
1259 return br_multicast_port_ctx_is_vlan(pmctx) &&
1260 !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
1261 }
1262
1263 static inline bool
br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port * pmctx)1264 br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx)
1265 {
1266 return pmctx->port->state == BR_STATE_DISABLED ||
1267 (br_multicast_port_ctx_is_vlan(pmctx) &&
1268 (br_multicast_port_ctx_vlan_disabled(pmctx) ||
1269 pmctx->vlan->state == BR_STATE_DISABLED));
1270 }
1271
1272 static inline bool
br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port * pmctx)1273 br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx)
1274 {
1275 return br_multicast_port_ctx_state_disabled(pmctx) ||
1276 pmctx->port->state == BR_STATE_BLOCKING ||
1277 (br_multicast_port_ctx_is_vlan(pmctx) &&
1278 pmctx->vlan->state == BR_STATE_BLOCKING);
1279 }
1280
1281 static inline bool
br_rports_have_mc_router(const struct net_bridge_mcast * brmctx)1282 br_rports_have_mc_router(const struct net_bridge_mcast *brmctx)
1283 {
1284 #if IS_ENABLED(CONFIG_IPV6)
1285 return !hlist_empty(&brmctx->ip4_mc_router_list) ||
1286 !hlist_empty(&brmctx->ip6_mc_router_list);
1287 #else
1288 return !hlist_empty(&brmctx->ip4_mc_router_list);
1289 #endif
1290 }
1291
1292 static inline bool
br_multicast_ctx_options_equal(const struct net_bridge_mcast * brmctx1,const struct net_bridge_mcast * brmctx2)1293 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
1294 const struct net_bridge_mcast *brmctx2)
1295 {
1296 return brmctx1->multicast_igmp_version ==
1297 brmctx2->multicast_igmp_version &&
1298 brmctx1->multicast_last_member_count ==
1299 brmctx2->multicast_last_member_count &&
1300 brmctx1->multicast_startup_query_count ==
1301 brmctx2->multicast_startup_query_count &&
1302 brmctx1->multicast_last_member_interval ==
1303 brmctx2->multicast_last_member_interval &&
1304 brmctx1->multicast_membership_interval ==
1305 brmctx2->multicast_membership_interval &&
1306 brmctx1->multicast_querier_interval ==
1307 brmctx2->multicast_querier_interval &&
1308 brmctx1->multicast_query_interval ==
1309 brmctx2->multicast_query_interval &&
1310 brmctx1->multicast_query_response_interval ==
1311 brmctx2->multicast_query_response_interval &&
1312 brmctx1->multicast_startup_query_interval ==
1313 brmctx2->multicast_startup_query_interval &&
1314 brmctx1->multicast_querier == brmctx2->multicast_querier &&
1315 brmctx1->multicast_router == brmctx2->multicast_router &&
1316 !br_rports_have_mc_router(brmctx1) &&
1317 !br_rports_have_mc_router(brmctx2) &&
1318 #if IS_ENABLED(CONFIG_IPV6)
1319 brmctx1->multicast_mld_version ==
1320 brmctx2->multicast_mld_version &&
1321 #endif
1322 true;
1323 }
1324
1325 static inline bool
br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast * brmctx)1326 br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast *brmctx)
1327 {
1328 bool vlan_snooping_enabled;
1329
1330 vlan_snooping_enabled = !!br_opt_get(brmctx->br,
1331 BROPT_MCAST_VLAN_SNOOPING_ENABLED);
1332
1333 return !!(vlan_snooping_enabled == br_multicast_ctx_is_vlan(brmctx));
1334 }
1335 #else
br_multicast_rcv(struct net_bridge_mcast ** brmctx,struct net_bridge_mcast_port ** pmctx,struct net_bridge_vlan * vlan,struct sk_buff * skb,u16 vid)1336 static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx,
1337 struct net_bridge_mcast_port **pmctx,
1338 struct net_bridge_vlan *vlan,
1339 struct sk_buff *skb,
1340 u16 vid)
1341 {
1342 return 0;
1343 }
1344
br_mdb_get(struct net_bridge_mcast * brmctx,struct sk_buff * skb,u16 vid)1345 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx,
1346 struct sk_buff *skb, u16 vid)
1347 {
1348 return NULL;
1349 }
1350
br_multicast_add_port(struct net_bridge_port * port)1351 static inline int br_multicast_add_port(struct net_bridge_port *port)
1352 {
1353 return 0;
1354 }
1355
br_multicast_del_port(struct net_bridge_port * port)1356 static inline void br_multicast_del_port(struct net_bridge_port *port)
1357 {
1358 }
1359
br_multicast_enable_port(struct net_bridge_port * port)1360 static inline void br_multicast_enable_port(struct net_bridge_port *port)
1361 {
1362 }
1363
br_multicast_disable_port(struct net_bridge_port * port)1364 static inline void br_multicast_disable_port(struct net_bridge_port *port)
1365 {
1366 }
1367
br_multicast_init(struct net_bridge * br)1368 static inline void br_multicast_init(struct net_bridge *br)
1369 {
1370 }
1371
br_multicast_join_snoopers(struct net_bridge * br)1372 static inline void br_multicast_join_snoopers(struct net_bridge *br)
1373 {
1374 }
1375
br_multicast_leave_snoopers(struct net_bridge * br)1376 static inline void br_multicast_leave_snoopers(struct net_bridge *br)
1377 {
1378 }
1379
br_multicast_open(struct net_bridge * br)1380 static inline void br_multicast_open(struct net_bridge *br)
1381 {
1382 }
1383
br_multicast_stop(struct net_bridge * br)1384 static inline void br_multicast_stop(struct net_bridge *br)
1385 {
1386 }
1387
br_multicast_dev_del(struct net_bridge * br)1388 static inline void br_multicast_dev_del(struct net_bridge *br)
1389 {
1390 }
1391
br_multicast_flood(struct net_bridge_mdb_entry * mdst,struct sk_buff * skb,struct net_bridge_mcast * brmctx,bool local_rcv,bool local_orig)1392 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1393 struct sk_buff *skb,
1394 struct net_bridge_mcast *brmctx,
1395 bool local_rcv, bool local_orig)
1396 {
1397 }
1398
br_multicast_is_router(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1399 static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx,
1400 struct sk_buff *skb)
1401 {
1402 return false;
1403 }
1404
br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct ethhdr * eth,const struct net_bridge_mdb_entry * mdb)1405 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1406 struct ethhdr *eth,
1407 const struct net_bridge_mdb_entry *mdb)
1408 {
1409 return false;
1410 }
1411
br_mdb_add(struct net_device * dev,struct nlattr * tb[],u16 nlmsg_flags,struct netlink_ext_ack * extack)1412 static inline int br_mdb_add(struct net_device *dev, struct nlattr *tb[],
1413 u16 nlmsg_flags, struct netlink_ext_ack *extack)
1414 {
1415 return -EOPNOTSUPP;
1416 }
1417
br_mdb_del(struct net_device * dev,struct nlattr * tb[],struct netlink_ext_ack * extack)1418 static inline int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
1419 struct netlink_ext_ack *extack)
1420 {
1421 return -EOPNOTSUPP;
1422 }
1423
br_mdb_dump(struct net_device * dev,struct sk_buff * skb,struct netlink_callback * cb)1424 static inline int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
1425 struct netlink_callback *cb)
1426 {
1427 return 0;
1428 }
1429
br_mdb_hash_init(struct net_bridge * br)1430 static inline int br_mdb_hash_init(struct net_bridge *br)
1431 {
1432 return 0;
1433 }
1434
br_mdb_hash_fini(struct net_bridge * br)1435 static inline void br_mdb_hash_fini(struct net_bridge *br)
1436 {
1437 }
1438
br_multicast_count(struct net_bridge * br,const struct net_bridge_port * p,const struct sk_buff * skb,u8 type,u8 dir)1439 static inline void br_multicast_count(struct net_bridge *br,
1440 const struct net_bridge_port *p,
1441 const struct sk_buff *skb,
1442 u8 type, u8 dir)
1443 {
1444 }
1445
br_multicast_init_stats(struct net_bridge * br)1446 static inline int br_multicast_init_stats(struct net_bridge *br)
1447 {
1448 return 0;
1449 }
1450
br_multicast_uninit_stats(struct net_bridge * br)1451 static inline void br_multicast_uninit_stats(struct net_bridge *br)
1452 {
1453 }
1454
br_multicast_igmp_type(const struct sk_buff * skb)1455 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1456 {
1457 return 0;
1458 }
1459
br_multicast_ctx_init(struct net_bridge * br,struct net_bridge_vlan * vlan,struct net_bridge_mcast * brmctx)1460 static inline void br_multicast_ctx_init(struct net_bridge *br,
1461 struct net_bridge_vlan *vlan,
1462 struct net_bridge_mcast *brmctx)
1463 {
1464 }
1465
br_multicast_ctx_deinit(struct net_bridge_mcast * brmctx)1466 static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx)
1467 {
1468 }
1469
br_multicast_port_ctx_init(struct net_bridge_port * port,struct net_bridge_vlan * vlan,struct net_bridge_mcast_port * pmctx)1470 static inline void br_multicast_port_ctx_init(struct net_bridge_port *port,
1471 struct net_bridge_vlan *vlan,
1472 struct net_bridge_mcast_port *pmctx)
1473 {
1474 }
1475
br_multicast_port_ctx_deinit(struct net_bridge_mcast_port * pmctx)1476 static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx)
1477 {
1478 }
1479
br_multicast_toggle_one_vlan(struct net_bridge_vlan * vlan,bool on)1480 static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan,
1481 bool on)
1482 {
1483 }
1484
br_multicast_toggle_vlan_snooping(struct net_bridge * br,bool on,struct netlink_ext_ack * extack)1485 static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br,
1486 bool on,
1487 struct netlink_ext_ack *extack)
1488 {
1489 return -EOPNOTSUPP;
1490 }
1491
br_multicast_toggle_global_vlan(struct net_bridge_vlan * vlan,bool on)1492 static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan,
1493 bool on)
1494 {
1495 return false;
1496 }
1497
1498 static inline bool
br_multicast_ctx_options_equal(const struct net_bridge_mcast * brmctx1,const struct net_bridge_mcast * brmctx2)1499 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
1500 const struct net_bridge_mcast *brmctx2)
1501 {
1502 return true;
1503 }
1504 #endif
1505
1506 /* br_vlan.c */
1507 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1508 bool br_allowed_ingress(const struct net_bridge *br,
1509 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1510 u16 *vid, u8 *state,
1511 struct net_bridge_vlan **vlan);
1512 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1513 const struct sk_buff *skb);
1514 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1515 struct sk_buff *br_handle_vlan(struct net_bridge *br,
1516 const struct net_bridge_port *port,
1517 struct net_bridge_vlan_group *vg,
1518 struct sk_buff *skb);
1519 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1520 bool *changed, struct netlink_ext_ack *extack);
1521 int br_vlan_delete(struct net_bridge *br, u16 vid);
1522 void br_vlan_flush(struct net_bridge *br);
1523 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1524 void br_recalculate_fwd_mask(struct net_bridge *br);
1525 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val,
1526 struct netlink_ext_ack *extack);
1527 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto,
1528 struct netlink_ext_ack *extack);
1529 int br_vlan_set_proto(struct net_bridge *br, unsigned long val,
1530 struct netlink_ext_ack *extack);
1531 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1532 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1533 int br_vlan_init(struct net_bridge *br);
1534 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val,
1535 struct netlink_ext_ack *extack);
1536 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1537 struct netlink_ext_ack *extack);
1538 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1539 bool *changed, struct netlink_ext_ack *extack);
1540 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1541 void nbp_vlan_flush(struct net_bridge_port *port);
1542 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1543 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1544 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1545 struct pcpu_sw_netstats *stats);
1546 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1547 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1548 void *ptr);
1549 void br_vlan_rtnl_init(void);
1550 void br_vlan_rtnl_uninit(void);
1551 void br_vlan_notify(const struct net_bridge *br,
1552 const struct net_bridge_port *p,
1553 u16 vid, u16 vid_range,
1554 int cmd);
1555 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1556 const struct net_bridge_vlan *range_end);
1557
1558 void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1559 struct net_device_path_ctx *ctx,
1560 struct net_device_path *path);
1561 int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1562 struct net_bridge_port *dst,
1563 struct net_device_path *path);
1564
br_vlan_group(const struct net_bridge * br)1565 static inline struct net_bridge_vlan_group *br_vlan_group(
1566 const struct net_bridge *br)
1567 {
1568 return rtnl_dereference(br->vlgrp);
1569 }
1570
nbp_vlan_group(const struct net_bridge_port * p)1571 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1572 const struct net_bridge_port *p)
1573 {
1574 return rtnl_dereference(p->vlgrp);
1575 }
1576
br_vlan_group_rcu(const struct net_bridge * br)1577 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1578 const struct net_bridge *br)
1579 {
1580 return rcu_dereference(br->vlgrp);
1581 }
1582
nbp_vlan_group_rcu(const struct net_bridge_port * p)1583 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1584 const struct net_bridge_port *p)
1585 {
1586 return rcu_dereference(p->vlgrp);
1587 }
1588
1589 /* Since bridge now depends on 8021Q module, but the time bridge sees the
1590 * skb, the vlan tag will always be present if the frame was tagged.
1591 */
br_vlan_get_tag(const struct sk_buff * skb,u16 * vid)1592 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1593 {
1594 int err = 0;
1595
1596 if (skb_vlan_tag_present(skb)) {
1597 *vid = skb_vlan_tag_get_id(skb);
1598 } else {
1599 *vid = 0;
1600 err = -EINVAL;
1601 }
1602
1603 return err;
1604 }
1605
br_get_pvid(const struct net_bridge_vlan_group * vg)1606 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1607 {
1608 if (!vg)
1609 return 0;
1610
1611 smp_rmb();
1612 return vg->pvid;
1613 }
1614
br_vlan_flags(const struct net_bridge_vlan * v,u16 pvid)1615 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1616 {
1617 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1618 }
1619 #else
br_allowed_ingress(const struct net_bridge * br,struct net_bridge_vlan_group * vg,struct sk_buff * skb,u16 * vid,u8 * state,struct net_bridge_vlan ** vlan)1620 static inline bool br_allowed_ingress(const struct net_bridge *br,
1621 struct net_bridge_vlan_group *vg,
1622 struct sk_buff *skb,
1623 u16 *vid, u8 *state,
1624 struct net_bridge_vlan **vlan)
1625
1626 {
1627 *vlan = NULL;
1628 return true;
1629 }
1630
br_allowed_egress(struct net_bridge_vlan_group * vg,const struct sk_buff * skb)1631 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1632 const struct sk_buff *skb)
1633 {
1634 return true;
1635 }
1636
br_should_learn(struct net_bridge_port * p,struct sk_buff * skb,u16 * vid)1637 static inline bool br_should_learn(struct net_bridge_port *p,
1638 struct sk_buff *skb, u16 *vid)
1639 {
1640 return true;
1641 }
1642
br_handle_vlan(struct net_bridge * br,const struct net_bridge_port * port,struct net_bridge_vlan_group * vg,struct sk_buff * skb)1643 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1644 const struct net_bridge_port *port,
1645 struct net_bridge_vlan_group *vg,
1646 struct sk_buff *skb)
1647 {
1648 return skb;
1649 }
1650
br_vlan_add(struct net_bridge * br,u16 vid,u16 flags,bool * changed,struct netlink_ext_ack * extack)1651 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1652 bool *changed, struct netlink_ext_ack *extack)
1653 {
1654 *changed = false;
1655 return -EOPNOTSUPP;
1656 }
1657
br_vlan_delete(struct net_bridge * br,u16 vid)1658 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1659 {
1660 return -EOPNOTSUPP;
1661 }
1662
br_vlan_flush(struct net_bridge * br)1663 static inline void br_vlan_flush(struct net_bridge *br)
1664 {
1665 }
1666
br_recalculate_fwd_mask(struct net_bridge * br)1667 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1668 {
1669 }
1670
br_vlan_init(struct net_bridge * br)1671 static inline int br_vlan_init(struct net_bridge *br)
1672 {
1673 return 0;
1674 }
1675
nbp_vlan_add(struct net_bridge_port * port,u16 vid,u16 flags,bool * changed,struct netlink_ext_ack * extack)1676 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1677 bool *changed, struct netlink_ext_ack *extack)
1678 {
1679 *changed = false;
1680 return -EOPNOTSUPP;
1681 }
1682
nbp_vlan_delete(struct net_bridge_port * port,u16 vid)1683 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1684 {
1685 return -EOPNOTSUPP;
1686 }
1687
nbp_vlan_flush(struct net_bridge_port * port)1688 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1689 {
1690 }
1691
br_vlan_find(struct net_bridge_vlan_group * vg,u16 vid)1692 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1693 u16 vid)
1694 {
1695 return NULL;
1696 }
1697
nbp_vlan_init(struct net_bridge_port * port,struct netlink_ext_ack * extack)1698 static inline int nbp_vlan_init(struct net_bridge_port *port,
1699 struct netlink_ext_ack *extack)
1700 {
1701 return 0;
1702 }
1703
br_vlan_get_tag(const struct sk_buff * skb,u16 * tag)1704 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1705 {
1706 return 0;
1707 }
1708
br_get_pvid(const struct net_bridge_vlan_group * vg)1709 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1710 {
1711 return 0;
1712 }
1713
br_vlan_filter_toggle(struct net_bridge * br,unsigned long val,struct netlink_ext_ack * extack)1714 static inline int br_vlan_filter_toggle(struct net_bridge *br,
1715 unsigned long val,
1716 struct netlink_ext_ack *extack)
1717 {
1718 return -EOPNOTSUPP;
1719 }
1720
nbp_get_num_vlan_infos(struct net_bridge_port * p,u32 filter_mask)1721 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1722 u32 filter_mask)
1723 {
1724 return 0;
1725 }
1726
br_vlan_fill_forward_path_pvid(struct net_bridge * br,struct net_device_path_ctx * ctx,struct net_device_path * path)1727 static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1728 struct net_device_path_ctx *ctx,
1729 struct net_device_path *path)
1730 {
1731 }
1732
br_vlan_fill_forward_path_mode(struct net_bridge * br,struct net_bridge_port * dst,struct net_device_path * path)1733 static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1734 struct net_bridge_port *dst,
1735 struct net_device_path *path)
1736 {
1737 return 0;
1738 }
1739
br_vlan_group(const struct net_bridge * br)1740 static inline struct net_bridge_vlan_group *br_vlan_group(
1741 const struct net_bridge *br)
1742 {
1743 return NULL;
1744 }
1745
nbp_vlan_group(const struct net_bridge_port * p)1746 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1747 const struct net_bridge_port *p)
1748 {
1749 return NULL;
1750 }
1751
br_vlan_group_rcu(const struct net_bridge * br)1752 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1753 const struct net_bridge *br)
1754 {
1755 return NULL;
1756 }
1757
nbp_vlan_group_rcu(const struct net_bridge_port * p)1758 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1759 const struct net_bridge_port *p)
1760 {
1761 return NULL;
1762 }
1763
br_vlan_get_stats(const struct net_bridge_vlan * v,struct pcpu_sw_netstats * stats)1764 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1765 struct pcpu_sw_netstats *stats)
1766 {
1767 }
1768
br_vlan_port_event(struct net_bridge_port * p,unsigned long event)1769 static inline void br_vlan_port_event(struct net_bridge_port *p,
1770 unsigned long event)
1771 {
1772 }
1773
br_vlan_bridge_event(struct net_device * dev,unsigned long event,void * ptr)1774 static inline int br_vlan_bridge_event(struct net_device *dev,
1775 unsigned long event, void *ptr)
1776 {
1777 return 0;
1778 }
1779
br_vlan_rtnl_init(void)1780 static inline void br_vlan_rtnl_init(void)
1781 {
1782 }
1783
br_vlan_rtnl_uninit(void)1784 static inline void br_vlan_rtnl_uninit(void)
1785 {
1786 }
1787
br_vlan_notify(const struct net_bridge * br,const struct net_bridge_port * p,u16 vid,u16 vid_range,int cmd)1788 static inline void br_vlan_notify(const struct net_bridge *br,
1789 const struct net_bridge_port *p,
1790 u16 vid, u16 vid_range,
1791 int cmd)
1792 {
1793 }
1794
br_vlan_can_enter_range(const struct net_bridge_vlan * v_curr,const struct net_bridge_vlan * range_end)1795 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1796 const struct net_bridge_vlan *range_end)
1797 {
1798 return true;
1799 }
1800
br_vlan_flags(const struct net_bridge_vlan * v,u16 pvid)1801 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1802 {
1803 return 0;
1804 }
1805
1806 #endif
1807
1808 /* br_vlan_options.c */
1809 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1810 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1811 const struct net_bridge_vlan *range_end);
1812 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v,
1813 const struct net_bridge_port *p);
1814 size_t br_vlan_opts_nl_size(void);
1815 int br_vlan_process_options(const struct net_bridge *br,
1816 const struct net_bridge_port *p,
1817 struct net_bridge_vlan *range_start,
1818 struct net_bridge_vlan *range_end,
1819 struct nlattr **tb,
1820 struct netlink_ext_ack *extack);
1821 int br_vlan_rtm_process_global_options(struct net_device *dev,
1822 const struct nlattr *attr,
1823 int cmd,
1824 struct netlink_ext_ack *extack);
1825 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
1826 const struct net_bridge_vlan *r_end);
1827 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
1828 const struct net_bridge_vlan *v_opts);
1829
1830 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */
br_vlan_get_state(const struct net_bridge_vlan * v)1831 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1832 {
1833 return READ_ONCE(v->state);
1834 }
1835
br_vlan_set_state(struct net_bridge_vlan * v,u8 state)1836 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1837 {
1838 WRITE_ONCE(v->state, state);
1839 }
1840
br_vlan_get_pvid_state(const struct net_bridge_vlan_group * vg)1841 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1842 {
1843 return READ_ONCE(vg->pvid_state);
1844 }
1845
br_vlan_set_pvid_state(struct net_bridge_vlan_group * vg,u8 state)1846 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1847 u8 state)
1848 {
1849 WRITE_ONCE(vg->pvid_state, state);
1850 }
1851
1852 /* learn_allow is true at ingress and false at egress */
br_vlan_state_allowed(u8 state,bool learn_allow)1853 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1854 {
1855 switch (state) {
1856 case BR_STATE_LEARNING:
1857 return learn_allow;
1858 case BR_STATE_FORWARDING:
1859 return true;
1860 default:
1861 return false;
1862 }
1863 }
1864 #endif
1865
1866 /* br_mst.c */
1867 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1868 DECLARE_STATIC_KEY_FALSE(br_mst_used);
br_mst_is_enabled(struct net_bridge * br)1869 static inline bool br_mst_is_enabled(struct net_bridge *br)
1870 {
1871 return static_branch_unlikely(&br_mst_used) &&
1872 br_opt_get(br, BROPT_MST_ENABLED);
1873 }
1874
1875 int br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state,
1876 struct netlink_ext_ack *extack);
1877 int br_mst_vlan_set_msti(struct net_bridge_vlan *v, u16 msti);
1878 void br_mst_vlan_init_state(struct net_bridge_vlan *v);
1879 int br_mst_set_enabled(struct net_bridge *br, bool on,
1880 struct netlink_ext_ack *extack);
1881 size_t br_mst_info_size(const struct net_bridge_vlan_group *vg);
1882 int br_mst_fill_info(struct sk_buff *skb,
1883 const struct net_bridge_vlan_group *vg);
1884 int br_mst_process(struct net_bridge_port *p, const struct nlattr *mst_attr,
1885 struct netlink_ext_ack *extack);
1886 #else
br_mst_is_enabled(struct net_bridge * br)1887 static inline bool br_mst_is_enabled(struct net_bridge *br)
1888 {
1889 return false;
1890 }
1891
br_mst_set_state(struct net_bridge_port * p,u16 msti,u8 state,struct netlink_ext_ack * extack)1892 static inline int br_mst_set_state(struct net_bridge_port *p, u16 msti,
1893 u8 state, struct netlink_ext_ack *extack)
1894 {
1895 return -EOPNOTSUPP;
1896 }
1897
br_mst_set_enabled(struct net_bridge * br,bool on,struct netlink_ext_ack * extack)1898 static inline int br_mst_set_enabled(struct net_bridge *br, bool on,
1899 struct netlink_ext_ack *extack)
1900 {
1901 return -EOPNOTSUPP;
1902 }
1903
br_mst_info_size(const struct net_bridge_vlan_group * vg)1904 static inline size_t br_mst_info_size(const struct net_bridge_vlan_group *vg)
1905 {
1906 return 0;
1907 }
1908
br_mst_fill_info(struct sk_buff * skb,const struct net_bridge_vlan_group * vg)1909 static inline int br_mst_fill_info(struct sk_buff *skb,
1910 const struct net_bridge_vlan_group *vg)
1911 {
1912 return -EOPNOTSUPP;
1913 }
1914
br_mst_process(struct net_bridge_port * p,const struct nlattr * mst_attr,struct netlink_ext_ack * extack)1915 static inline int br_mst_process(struct net_bridge_port *p,
1916 const struct nlattr *mst_attr,
1917 struct netlink_ext_ack *extack)
1918 {
1919 return -EOPNOTSUPP;
1920 }
1921 #endif
1922
1923 struct nf_br_ops {
1924 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1925 };
1926 extern const struct nf_br_ops __rcu *nf_br_ops;
1927
1928 /* br_netfilter.c */
1929 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1930 int br_nf_core_init(void);
1931 void br_nf_core_fini(void);
1932 void br_netfilter_rtable_init(struct net_bridge *);
1933 #else
br_nf_core_init(void)1934 static inline int br_nf_core_init(void) { return 0; }
br_nf_core_fini(void)1935 static inline void br_nf_core_fini(void) {}
1936 #define br_netfilter_rtable_init(x)
1937 #endif
1938
1939 /* br_stp.c */
1940 void br_set_state(struct net_bridge_port *p, unsigned int state);
1941 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1942 void br_init_port(struct net_bridge_port *p);
1943 void br_become_designated_port(struct net_bridge_port *p);
1944
1945 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1946 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1947 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1948 int br_set_max_age(struct net_bridge *br, unsigned long x);
1949 int __set_ageing_time(struct net_device *dev, unsigned long t);
1950 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1951
1952
1953 /* br_stp_if.c */
1954 void br_stp_enable_bridge(struct net_bridge *br);
1955 void br_stp_disable_bridge(struct net_bridge *br);
1956 int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1957 struct netlink_ext_ack *extack);
1958 void br_stp_enable_port(struct net_bridge_port *p);
1959 void br_stp_disable_port(struct net_bridge_port *p);
1960 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1961 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1962 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1963 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1964 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1965 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1966
1967 /* br_stp_bpdu.c */
1968 struct stp_proto;
1969 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1970 struct net_device *dev);
1971
1972 /* br_stp_timer.c */
1973 void br_stp_timer_init(struct net_bridge *br);
1974 void br_stp_port_timer_init(struct net_bridge_port *p);
1975 unsigned long br_timer_value(const struct timer_list *timer);
1976
1977 /* br.c */
1978 #if IS_ENABLED(CONFIG_ATM_LANE)
1979 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1980 #endif
1981
1982 /* br_mrp.c */
1983 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
1984 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1985 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1986 bool br_mrp_enabled(struct net_bridge *br);
1987 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
1988 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
1989 #else
br_mrp_parse(struct net_bridge * br,struct net_bridge_port * p,struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)1990 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1991 struct nlattr *attr, int cmd,
1992 struct netlink_ext_ack *extack)
1993 {
1994 return -EOPNOTSUPP;
1995 }
1996
br_mrp_enabled(struct net_bridge * br)1997 static inline bool br_mrp_enabled(struct net_bridge *br)
1998 {
1999 return false;
2000 }
2001
br_mrp_port_del(struct net_bridge * br,struct net_bridge_port * p)2002 static inline void br_mrp_port_del(struct net_bridge *br,
2003 struct net_bridge_port *p)
2004 {
2005 }
2006
br_mrp_fill_info(struct sk_buff * skb,struct net_bridge * br)2007 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
2008 {
2009 return 0;
2010 }
2011
2012 #endif
2013
2014 /* br_cfm.c */
2015 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
2016 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
2017 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
2018 bool br_cfm_created(struct net_bridge *br);
2019 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
2020 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br);
2021 int br_cfm_status_fill_info(struct sk_buff *skb,
2022 struct net_bridge *br,
2023 bool getlink);
2024 int br_cfm_mep_count(struct net_bridge *br, u32 *count);
2025 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count);
2026 #else
br_cfm_parse(struct net_bridge * br,struct net_bridge_port * p,struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)2027 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
2028 struct nlattr *attr, int cmd,
2029 struct netlink_ext_ack *extack)
2030 {
2031 return -EOPNOTSUPP;
2032 }
2033
br_cfm_created(struct net_bridge * br)2034 static inline bool br_cfm_created(struct net_bridge *br)
2035 {
2036 return false;
2037 }
2038
br_cfm_port_del(struct net_bridge * br,struct net_bridge_port * p)2039 static inline void br_cfm_port_del(struct net_bridge *br,
2040 struct net_bridge_port *p)
2041 {
2042 }
2043
br_cfm_config_fill_info(struct sk_buff * skb,struct net_bridge * br)2044 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br)
2045 {
2046 return -EOPNOTSUPP;
2047 }
2048
br_cfm_status_fill_info(struct sk_buff * skb,struct net_bridge * br,bool getlink)2049 static inline int br_cfm_status_fill_info(struct sk_buff *skb,
2050 struct net_bridge *br,
2051 bool getlink)
2052 {
2053 return -EOPNOTSUPP;
2054 }
2055
br_cfm_mep_count(struct net_bridge * br,u32 * count)2056 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
2057 {
2058 *count = 0;
2059 return -EOPNOTSUPP;
2060 }
2061
br_cfm_peer_mep_count(struct net_bridge * br,u32 * count)2062 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
2063 {
2064 *count = 0;
2065 return -EOPNOTSUPP;
2066 }
2067 #endif
2068
2069 /* br_netlink.c */
2070 extern struct rtnl_link_ops br_link_ops;
2071 int br_netlink_init(void);
2072 void br_netlink_fini(void);
2073 void br_ifinfo_notify(int event, const struct net_bridge *br,
2074 const struct net_bridge_port *port);
2075 void br_info_notify(int event, const struct net_bridge *br,
2076 const struct net_bridge_port *port, u32 filter);
2077 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
2078 struct netlink_ext_ack *extack);
2079 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
2080 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
2081 u32 filter_mask, int nlflags);
2082 int br_process_vlan_info(struct net_bridge *br,
2083 struct net_bridge_port *p, int cmd,
2084 struct bridge_vlan_info *vinfo_curr,
2085 struct bridge_vlan_info **vinfo_last,
2086 bool *changed,
2087 struct netlink_ext_ack *extack);
2088
2089 #ifdef CONFIG_SYSFS
2090 /* br_sysfs_if.c */
2091 extern const struct sysfs_ops brport_sysfs_ops;
2092 int br_sysfs_addif(struct net_bridge_port *p);
2093 int br_sysfs_renameif(struct net_bridge_port *p);
2094
2095 /* br_sysfs_br.c */
2096 int br_sysfs_addbr(struct net_device *dev);
2097 void br_sysfs_delbr(struct net_device *dev);
2098
2099 #else
2100
br_sysfs_addif(struct net_bridge_port * p)2101 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
br_sysfs_renameif(struct net_bridge_port * p)2102 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
br_sysfs_addbr(struct net_device * dev)2103 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
br_sysfs_delbr(struct net_device * dev)2104 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
2105 #endif /* CONFIG_SYSFS */
2106
2107 /* br_switchdev.c */
2108 #ifdef CONFIG_NET_SWITCHDEV
2109 int br_switchdev_port_offload(struct net_bridge_port *p,
2110 struct net_device *dev, const void *ctx,
2111 struct notifier_block *atomic_nb,
2112 struct notifier_block *blocking_nb,
2113 bool tx_fwd_offload,
2114 struct netlink_ext_ack *extack);
2115
2116 void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
2117 struct notifier_block *atomic_nb,
2118 struct notifier_block *blocking_nb);
2119
2120 int br_switchdev_port_replay(struct net_bridge_port *p,
2121 struct net_device *dev, const void *ctx,
2122 struct notifier_block *atomic_nb,
2123 struct notifier_block *blocking_nb,
2124 struct netlink_ext_ack *extack);
2125
2126 bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb);
2127
2128 void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb);
2129
2130 void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
2131 struct sk_buff *skb);
2132 void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
2133 struct sk_buff *skb);
2134 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
2135 struct sk_buff *skb);
2136 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
2137 const struct sk_buff *skb);
2138 int br_switchdev_set_port_flag(struct net_bridge_port *p,
2139 unsigned long flags,
2140 unsigned long mask,
2141 struct netlink_ext_ack *extack);
2142 void br_switchdev_fdb_notify(struct net_bridge *br,
2143 const struct net_bridge_fdb_entry *fdb, int type);
2144 void br_switchdev_mdb_notify(struct net_device *dev,
2145 struct net_bridge_mdb_entry *mp,
2146 struct net_bridge_port_group *pg,
2147 int type);
2148 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
2149 bool changed, struct netlink_ext_ack *extack);
2150 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
2151 void br_switchdev_init(struct net_bridge *br);
2152
br_switchdev_frame_unmark(struct sk_buff * skb)2153 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
2154 {
2155 skb->offload_fwd_mark = 0;
2156 }
2157 #else
2158 static inline int
br_switchdev_port_offload(struct net_bridge_port * p,struct net_device * dev,const void * ctx,struct notifier_block * atomic_nb,struct notifier_block * blocking_nb,bool tx_fwd_offload,struct netlink_ext_ack * extack)2159 br_switchdev_port_offload(struct net_bridge_port *p,
2160 struct net_device *dev, const void *ctx,
2161 struct notifier_block *atomic_nb,
2162 struct notifier_block *blocking_nb,
2163 bool tx_fwd_offload,
2164 struct netlink_ext_ack *extack)
2165 {
2166 return -EOPNOTSUPP;
2167 }
2168
2169 static inline void
br_switchdev_port_unoffload(struct net_bridge_port * p,const void * ctx,struct notifier_block * atomic_nb,struct notifier_block * blocking_nb)2170 br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
2171 struct notifier_block *atomic_nb,
2172 struct notifier_block *blocking_nb)
2173 {
2174 }
2175
2176 static inline int
br_switchdev_port_replay(struct net_bridge_port * p,struct net_device * dev,const void * ctx,struct notifier_block * atomic_nb,struct notifier_block * blocking_nb,struct netlink_ext_ack * extack)2177 br_switchdev_port_replay(struct net_bridge_port *p,
2178 struct net_device *dev, const void *ctx,
2179 struct notifier_block *atomic_nb,
2180 struct notifier_block *blocking_nb,
2181 struct netlink_ext_ack *extack)
2182 {
2183 return -EOPNOTSUPP;
2184 }
2185
br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff * skb)2186 static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb)
2187 {
2188 return false;
2189 }
2190
br_switchdev_frame_set_offload_fwd_mark(struct sk_buff * skb)2191 static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb)
2192 {
2193 }
2194
2195 static inline void
nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port * p,struct sk_buff * skb)2196 nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
2197 struct sk_buff *skb)
2198 {
2199 }
2200
2201 static inline void
nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port * p,struct sk_buff * skb)2202 nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
2203 struct sk_buff *skb)
2204 {
2205 }
2206
nbp_switchdev_frame_mark(const struct net_bridge_port * p,struct sk_buff * skb)2207 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
2208 struct sk_buff *skb)
2209 {
2210 }
2211
nbp_switchdev_allowed_egress(const struct net_bridge_port * p,const struct sk_buff * skb)2212 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
2213 const struct sk_buff *skb)
2214 {
2215 return true;
2216 }
2217
br_switchdev_set_port_flag(struct net_bridge_port * p,unsigned long flags,unsigned long mask,struct netlink_ext_ack * extack)2218 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
2219 unsigned long flags,
2220 unsigned long mask,
2221 struct netlink_ext_ack *extack)
2222 {
2223 return 0;
2224 }
2225
br_switchdev_port_vlan_add(struct net_device * dev,u16 vid,u16 flags,bool changed,struct netlink_ext_ack * extack)2226 static inline int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid,
2227 u16 flags, bool changed,
2228 struct netlink_ext_ack *extack)
2229 {
2230 return -EOPNOTSUPP;
2231 }
2232
br_switchdev_port_vlan_del(struct net_device * dev,u16 vid)2233 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
2234 {
2235 return -EOPNOTSUPP;
2236 }
2237
2238 static inline void
br_switchdev_fdb_notify(struct net_bridge * br,const struct net_bridge_fdb_entry * fdb,int type)2239 br_switchdev_fdb_notify(struct net_bridge *br,
2240 const struct net_bridge_fdb_entry *fdb, int type)
2241 {
2242 }
2243
br_switchdev_mdb_notify(struct net_device * dev,struct net_bridge_mdb_entry * mp,struct net_bridge_port_group * pg,int type)2244 static inline void br_switchdev_mdb_notify(struct net_device *dev,
2245 struct net_bridge_mdb_entry *mp,
2246 struct net_bridge_port_group *pg,
2247 int type)
2248 {
2249 }
2250
br_switchdev_frame_unmark(struct sk_buff * skb)2251 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
2252 {
2253 }
2254
br_switchdev_init(struct net_bridge * br)2255 static inline void br_switchdev_init(struct net_bridge *br)
2256 {
2257 }
2258
2259 #endif /* CONFIG_NET_SWITCHDEV */
2260
2261 /* br_arp_nd_proxy.c */
2262 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
2263 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
2264 u16 vid, struct net_bridge_port *p);
2265 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
2266 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
2267 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
2268 bool br_is_neigh_suppress_enabled(const struct net_bridge_port *p, u16 vid);
2269 #endif
2270