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 * @tnode: rhashtable member
190 * @vid: VLAN id
191 * @flags: bridge vlan flags
192 * @priv_flags: private (in-kernel) bridge vlan flags
193 * @state: STP state (e.g. blocking, learning, forwarding)
194 * @stats: per-cpu VLAN statistics
195 * @br: if MASTER flag set, this points to a bridge struct
196 * @port: if MASTER flag unset, this points to a port struct
197 * @refcnt: if MASTER flag set, this is bumped for each port referencing it
198 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context
199 * for this VLAN entry
200 * @tinfo: bridge tunnel info
201 * @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context
202 * @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast
203 * context
204 * @msti: if MASTER flag set, this holds the VLANs MST instance
205 * @vlist: sorted list of VLAN entries
206 * @rcu: used for entry destruction
207 *
208 * This structure is shared between the global per-VLAN entries contained in
209 * the bridge rhashtable and the local per-port per-VLAN entries contained in
210 * the port's rhashtable. The union entries should be interpreted depending on
211 * the entry flags that are set.
212 */
213 struct net_bridge_vlan {
214 struct rhash_head vnode;
215 struct rhash_head tnode;
216 u16 vid;
217 u16 flags;
218 u16 priv_flags;
219 u8 state;
220 struct pcpu_sw_netstats __percpu *stats;
221 union {
222 struct net_bridge *br;
223 struct net_bridge_port *port;
224 };
225 union {
226 refcount_t refcnt;
227 struct net_bridge_vlan *brvlan;
228 };
229
230 struct br_tunnel_info tinfo;
231
232 union {
233 struct net_bridge_mcast br_mcast_ctx;
234 struct net_bridge_mcast_port port_mcast_ctx;
235 };
236
237 u16 msti;
238
239 struct list_head vlist;
240
241 struct rcu_head rcu;
242 };
243
244 /**
245 * struct net_bridge_vlan_group
246 *
247 * @vlan_hash: VLAN entry rhashtable
248 * @vlan_list: sorted VLAN entry list
249 * @num_vlans: number of total VLAN entries
250 * @pvid: PVID VLAN id
251 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking)
252 *
253 * IMPORTANT: Be careful when checking if there're VLAN entries using list
254 * primitives because the bridge can have entries in its list which
255 * are just for global context but not for filtering, i.e. they have
256 * the master flag set but not the brentry flag. If you have to check
257 * if there're "real" entries in the bridge please test @num_vlans
258 */
259 struct net_bridge_vlan_group {
260 struct rhashtable vlan_hash;
261 struct rhashtable tunnel_hash;
262 struct list_head vlan_list;
263 u16 num_vlans;
264 u16 pvid;
265 u8 pvid_state;
266 };
267
268 /* bridge fdb flags */
269 enum {
270 BR_FDB_LOCAL,
271 BR_FDB_STATIC,
272 BR_FDB_STICKY,
273 BR_FDB_ADDED_BY_USER,
274 BR_FDB_ADDED_BY_EXT_LEARN,
275 BR_FDB_OFFLOADED,
276 BR_FDB_NOTIFY,
277 BR_FDB_NOTIFY_INACTIVE,
278 BR_FDB_LOCKED,
279 BR_FDB_DYNAMIC_LEARNED,
280 };
281
282 struct net_bridge_fdb_key {
283 mac_addr addr;
284 u16 vlan_id;
285 };
286
287 struct net_bridge_fdb_entry {
288 struct rhash_head rhnode;
289 struct net_bridge_port *dst;
290
291 struct net_bridge_fdb_key key;
292 struct hlist_node fdb_node;
293 unsigned long flags;
294
295 /* write-heavy members should not affect lookups */
296 unsigned long updated ____cacheline_aligned_in_smp;
297 unsigned long used;
298
299 struct rcu_head rcu;
300 };
301
302 struct net_bridge_fdb_flush_desc {
303 unsigned long flags;
304 unsigned long flags_mask;
305 int port_ifindex;
306 u16 vlan_id;
307 };
308
309 #define MDB_PG_FLAGS_PERMANENT BIT(0)
310 #define MDB_PG_FLAGS_OFFLOAD BIT(1)
311 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2)
312 #define MDB_PG_FLAGS_STAR_EXCL BIT(3)
313 #define MDB_PG_FLAGS_BLOCKED BIT(4)
314
315 #define PG_SRC_ENT_LIMIT 32
316
317 #define BR_SGRP_F_DELETE BIT(0)
318 #define BR_SGRP_F_SEND BIT(1)
319 #define BR_SGRP_F_INSTALLED BIT(2)
320 #define BR_SGRP_F_USER_ADDED BIT(3)
321
322 struct net_bridge_mcast_gc {
323 struct hlist_node gc_node;
324 void (*destroy)(struct net_bridge_mcast_gc *gc);
325 };
326
327 struct net_bridge_group_src {
328 struct hlist_node node;
329
330 struct br_ip addr;
331 struct net_bridge_port_group *pg;
332 u8 flags;
333 u8 src_query_rexmit_cnt;
334 struct timer_list timer;
335
336 struct net_bridge *br;
337 struct net_bridge_mcast_gc mcast_gc;
338 struct rcu_head rcu;
339 };
340
341 struct net_bridge_port_group_sg_key {
342 struct net_bridge_port *port;
343 struct br_ip addr;
344 };
345
346 struct net_bridge_port_group {
347 struct net_bridge_port_group __rcu *next;
348 struct net_bridge_port_group_sg_key key;
349 unsigned char eth_addr[ETH_ALEN] __aligned(2);
350 unsigned char flags;
351 unsigned char filter_mode;
352 unsigned char grp_query_rexmit_cnt;
353 unsigned char rt_protocol;
354
355 struct hlist_head src_list;
356 unsigned int src_ents;
357 struct timer_list timer;
358 struct timer_list rexmit_timer;
359 struct hlist_node mglist;
360 struct rb_root eht_set_tree;
361 struct rb_root eht_host_tree;
362
363 struct rhash_head rhnode;
364 struct net_bridge_mcast_gc mcast_gc;
365 struct rcu_head rcu;
366 };
367
368 struct net_bridge_mdb_entry {
369 struct rhash_head rhnode;
370 struct net_bridge *br;
371 struct net_bridge_port_group __rcu *ports;
372 struct br_ip addr;
373 bool host_joined;
374
375 struct timer_list timer;
376 struct hlist_node mdb_node;
377
378 struct net_bridge_mcast_gc mcast_gc;
379 struct rcu_head rcu;
380 };
381
382 struct net_bridge_port {
383 struct net_bridge *br;
384 struct net_device *dev;
385 netdevice_tracker dev_tracker;
386 struct list_head list;
387
388 unsigned long flags;
389 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
390 struct net_bridge_vlan_group __rcu *vlgrp;
391 #endif
392 struct net_bridge_port __rcu *backup_port;
393 u32 backup_nhid;
394
395 /* STP */
396 u8 priority;
397 u8 state;
398 u16 port_no;
399 unsigned char topology_change_ack;
400 unsigned char config_pending;
401 port_id port_id;
402 port_id designated_port;
403 bridge_id designated_root;
404 bridge_id designated_bridge;
405 u32 path_cost;
406 u32 designated_cost;
407 unsigned long designated_age;
408
409 struct timer_list forward_delay_timer;
410 struct timer_list hold_timer;
411 struct timer_list message_age_timer;
412 struct kobject kobj;
413 struct rcu_head rcu;
414
415 struct net_bridge_mcast_port multicast_ctx;
416
417 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
418 struct bridge_mcast_stats __percpu *mcast_stats;
419
420 u32 multicast_eht_hosts_limit;
421 u32 multicast_eht_hosts_cnt;
422 struct hlist_head mglist;
423 #endif
424
425 #ifdef CONFIG_SYSFS
426 char sysfs_name[IFNAMSIZ];
427 #endif
428
429 #ifdef CONFIG_NET_POLL_CONTROLLER
430 struct netpoll *np;
431 #endif
432 #ifdef CONFIG_NET_SWITCHDEV
433 /* Identifier used to group ports that share the same switchdev
434 * hardware domain.
435 */
436 int hwdom;
437 int offload_count;
438 struct netdev_phys_item_id ppid;
439 #endif
440 u16 group_fwd_mask;
441 u16 backup_redirected_cnt;
442
443 struct bridge_stp_xstats stp_xstats;
444 };
445
446 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
447
448 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
449 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
450
br_port_get_rcu(const struct net_device * dev)451 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
452 {
453 return rcu_dereference(dev->rx_handler_data);
454 }
455
br_port_get_rtnl(const struct net_device * dev)456 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
457 {
458 return netif_is_bridge_port(dev) ?
459 rtnl_dereference(dev->rx_handler_data) : NULL;
460 }
461
br_port_get_rtnl_rcu(const struct net_device * dev)462 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
463 {
464 return netif_is_bridge_port(dev) ?
465 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
466 }
467
468 enum net_bridge_opts {
469 BROPT_VLAN_ENABLED,
470 BROPT_VLAN_STATS_ENABLED,
471 BROPT_NF_CALL_IPTABLES,
472 BROPT_NF_CALL_IP6TABLES,
473 BROPT_NF_CALL_ARPTABLES,
474 BROPT_GROUP_ADDR_SET,
475 BROPT_MULTICAST_ENABLED,
476 BROPT_MULTICAST_QUERY_USE_IFADDR,
477 BROPT_MULTICAST_STATS_ENABLED,
478 BROPT_HAS_IPV6_ADDR,
479 BROPT_NEIGH_SUPPRESS_ENABLED,
480 BROPT_MTU_SET_BY_USER,
481 BROPT_VLAN_STATS_PER_PORT,
482 BROPT_NO_LL_LEARN,
483 BROPT_VLAN_BRIDGE_BINDING,
484 BROPT_MCAST_VLAN_SNOOPING_ENABLED,
485 BROPT_MST_ENABLED,
486 };
487
488 struct net_bridge {
489 spinlock_t lock;
490 spinlock_t hash_lock;
491 struct hlist_head frame_type_list;
492 struct net_device *dev;
493 unsigned long options;
494 /* These fields are accessed on each packet */
495 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
496 __be16 vlan_proto;
497 u16 default_pvid;
498 struct net_bridge_vlan_group __rcu *vlgrp;
499 #endif
500
501 struct rhashtable fdb_hash_tbl;
502 struct list_head port_list;
503 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
504 union {
505 struct rtable fake_rtable;
506 struct rt6_info fake_rt6_info;
507 };
508 #endif
509 u16 group_fwd_mask;
510 u16 group_fwd_mask_required;
511
512 /* STP */
513 bridge_id designated_root;
514 bridge_id bridge_id;
515 unsigned char topology_change;
516 unsigned char topology_change_detected;
517 u16 root_port;
518 unsigned long max_age;
519 unsigned long hello_time;
520 unsigned long forward_delay;
521 unsigned long ageing_time;
522 unsigned long bridge_max_age;
523 unsigned long bridge_hello_time;
524 unsigned long bridge_forward_delay;
525 unsigned long bridge_ageing_time;
526 u32 root_path_cost;
527
528 u8 group_addr[ETH_ALEN];
529
530 enum {
531 BR_NO_STP, /* no spanning tree */
532 BR_KERNEL_STP, /* old STP in kernel */
533 BR_USER_STP, /* new RSTP in userspace */
534 } stp_enabled;
535
536 struct net_bridge_mcast multicast_ctx;
537
538 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
539 struct bridge_mcast_stats __percpu *mcast_stats;
540
541 u32 hash_max;
542
543 spinlock_t multicast_lock;
544
545 struct rhashtable mdb_hash_tbl;
546 struct rhashtable sg_port_tbl;
547
548 struct hlist_head mcast_gc_list;
549 struct hlist_head mdb_list;
550
551 struct work_struct mcast_gc_work;
552 #endif
553
554 struct timer_list hello_timer;
555 struct timer_list tcn_timer;
556 struct timer_list topology_change_timer;
557 struct delayed_work gc_work;
558 struct kobject *ifobj;
559 u32 auto_cnt;
560
561 atomic_t fdb_n_learned;
562 u32 fdb_max_learned;
563
564 #ifdef CONFIG_NET_SWITCHDEV
565 /* Counter used to make sure that hardware domains get unique
566 * identifiers in case a bridge spans multiple switchdev instances.
567 */
568 int last_hwdom;
569 /* Bit mask of hardware domain numbers in use */
570 unsigned long busy_hwdoms;
571 #endif
572 struct hlist_head fdb_list;
573
574 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
575 struct hlist_head mrp_list;
576 #endif
577 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
578 struct hlist_head mep_list;
579 #endif
580 };
581
582 struct br_input_skb_cb {
583 struct net_device *brdev;
584
585 u16 frag_max_size;
586 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
587 u8 igmp;
588 u8 mrouters_only:1;
589 #endif
590 u8 proxyarp_replied:1;
591 u8 src_port_isolated:1;
592 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
593 u8 vlan_filtered:1;
594 #endif
595 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
596 u8 br_netfilter_broute:1;
597 #endif
598
599 #ifdef CONFIG_NET_SWITCHDEV
600 /* Set if TX data plane offloading is used towards at least one
601 * hardware domain.
602 */
603 u8 tx_fwd_offload:1;
604 /* The switchdev hardware domain from which this packet was received.
605 * If skb->offload_fwd_mark was set, then this packet was already
606 * forwarded by hardware to the other ports in the source hardware
607 * domain, otherwise it wasn't.
608 */
609 int src_hwdom;
610 /* Bit mask of hardware domains towards this packet has already been
611 * transmitted using the TX data plane offload.
612 */
613 unsigned long fwd_hwdoms;
614 #endif
615
616 u32 backup_nhid;
617 };
618
619 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
620
621 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
622 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
623 #else
624 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
625 #endif
626
627 #define br_printk(level, br, format, args...) \
628 printk(level "%s: " format, (br)->dev->name, ##args)
629
630 #define br_err(__br, format, args...) \
631 br_printk(KERN_ERR, __br, format, ##args)
632 #define br_warn(__br, format, args...) \
633 br_printk(KERN_WARNING, __br, format, ##args)
634 #define br_notice(__br, format, args...) \
635 br_printk(KERN_NOTICE, __br, format, ##args)
636 #define br_info(__br, format, args...) \
637 br_printk(KERN_INFO, __br, format, ##args)
638
639 #define br_debug(br, format, args...) \
640 pr_debug("%s: " format, (br)->dev->name, ##args)
641
642 /* called under bridge lock */
br_is_root_bridge(const struct net_bridge * br)643 static inline int br_is_root_bridge(const struct net_bridge *br)
644 {
645 return !memcmp(&br->bridge_id, &br->designated_root, 8);
646 }
647
648 /* check if a VLAN entry is global */
br_vlan_is_master(const struct net_bridge_vlan * v)649 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
650 {
651 return v->flags & BRIDGE_VLAN_INFO_MASTER;
652 }
653
654 /* check if a VLAN entry is used by the bridge */
br_vlan_is_brentry(const struct net_bridge_vlan * v)655 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
656 {
657 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
658 }
659
660 /* 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)661 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
662 {
663 if (br_vlan_is_master(v)) {
664 if (br_vlan_is_brentry(v))
665 return true;
666 else
667 return false;
668 }
669
670 return true;
671 }
672
nbp_state_should_learn(const struct net_bridge_port * p)673 static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
674 {
675 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
676 }
677
br_vlan_valid_id(u16 vid,struct netlink_ext_ack * extack)678 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack)
679 {
680 bool ret = vid > 0 && vid < VLAN_VID_MASK;
681
682 if (!ret)
683 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid");
684
685 return ret;
686 }
687
br_vlan_valid_range(const struct bridge_vlan_info * cur,const struct bridge_vlan_info * last,struct netlink_ext_ack * extack)688 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur,
689 const struct bridge_vlan_info *last,
690 struct netlink_ext_ack *extack)
691 {
692 /* pvid flag is not allowed in ranges */
693 if (cur->flags & BRIDGE_VLAN_INFO_PVID) {
694 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range");
695 return false;
696 }
697
698 /* when cur is the range end, check if:
699 * - it has range start flag
700 * - range ids are invalid (end is equal to or before start)
701 */
702 if (last) {
703 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
704 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one");
705 return false;
706 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) {
707 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing");
708 return false;
709 } else if (cur->vid <= last->vid) {
710 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
711 return false;
712 }
713 }
714
715 /* check for required range flags */
716 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
717 BRIDGE_VLAN_INFO_RANGE_END))) {
718 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing");
719 return false;
720 }
721
722 return true;
723 }
724
br_vlan_multicast_router(const struct net_bridge_vlan * v)725 static inline u8 br_vlan_multicast_router(const struct net_bridge_vlan *v)
726 {
727 u8 mcast_router = MDB_RTR_TYPE_DISABLED;
728
729 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
730 if (!br_vlan_is_master(v))
731 mcast_router = v->port_mcast_ctx.multicast_router;
732 else
733 mcast_router = v->br_mcast_ctx.multicast_router;
734 #endif
735
736 return mcast_router;
737 }
738
br_afspec_cmd_to_rtm(int cmd)739 static inline int br_afspec_cmd_to_rtm(int cmd)
740 {
741 switch (cmd) {
742 case RTM_SETLINK:
743 return RTM_NEWVLAN;
744 case RTM_DELLINK:
745 return RTM_DELVLAN;
746 }
747
748 return 0;
749 }
750
br_opt_get(const struct net_bridge * br,enum net_bridge_opts opt)751 static inline int br_opt_get(const struct net_bridge *br,
752 enum net_bridge_opts opt)
753 {
754 return test_bit(opt, &br->options);
755 }
756
757 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
758 struct netlink_ext_ack *extack);
759 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
760 int br_boolopt_multi_toggle(struct net_bridge *br,
761 struct br_boolopt_multi *bm,
762 struct netlink_ext_ack *extack);
763 void br_boolopt_multi_get(const struct net_bridge *br,
764 struct br_boolopt_multi *bm);
765 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
766
767 #if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
br_tc_skb_miss_set(struct sk_buff * skb,bool miss)768 static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
769 {
770 struct tc_skb_ext *ext;
771
772 if (!tc_skb_ext_tc_enabled())
773 return;
774
775 ext = skb_ext_find(skb, TC_SKB_EXT);
776 if (ext) {
777 ext->l2_miss = miss;
778 return;
779 }
780 if (!miss)
781 return;
782 ext = tc_skb_ext_alloc(skb);
783 if (!ext)
784 return;
785 ext->l2_miss = true;
786 }
787 #else
br_tc_skb_miss_set(struct sk_buff * skb,bool miss)788 static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
789 {
790 }
791 #endif
792
793 /* br_device.c */
794 void br_dev_setup(struct net_device *dev);
795 void br_dev_delete(struct net_device *dev, struct list_head *list);
796 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
797 #ifdef CONFIG_NET_POLL_CONTROLLER
br_netpoll_send_skb(const struct net_bridge_port * p,struct sk_buff * skb)798 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
799 struct sk_buff *skb)
800 {
801 netpoll_send_skb(p->np, skb);
802 }
803
804 int br_netpoll_enable(struct net_bridge_port *p);
805 void br_netpoll_disable(struct net_bridge_port *p);
806 #else
br_netpoll_send_skb(const struct net_bridge_port * p,struct sk_buff * skb)807 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
808 struct sk_buff *skb)
809 {
810 }
811
br_netpoll_enable(struct net_bridge_port * p)812 static inline int br_netpoll_enable(struct net_bridge_port *p)
813 {
814 return 0;
815 }
816
br_netpoll_disable(struct net_bridge_port * p)817 static inline void br_netpoll_disable(struct net_bridge_port *p)
818 {
819 }
820 #endif
821
822 /* br_fdb.c */
823 #define FDB_FLUSH_IGNORED_NDM_FLAGS (NTF_MASTER | NTF_SELF)
824 #define FDB_FLUSH_ALLOWED_NDM_STATES (NUD_PERMANENT | NUD_NOARP)
825 #define FDB_FLUSH_ALLOWED_NDM_FLAGS (NTF_USE | NTF_EXT_LEARNED | \
826 NTF_STICKY | NTF_OFFLOADED)
827
828 int br_fdb_init(void);
829 void br_fdb_fini(void);
830 int br_fdb_hash_init(struct net_bridge *br);
831 void br_fdb_hash_fini(struct net_bridge *br);
832 void br_fdb_flush(struct net_bridge *br,
833 const struct net_bridge_fdb_flush_desc *desc);
834 void br_fdb_find_delete_local(struct net_bridge *br,
835 const struct net_bridge_port *p,
836 const unsigned char *addr, u16 vid);
837 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
838 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
839 void br_fdb_cleanup(struct work_struct *work);
840 void br_fdb_delete_by_port(struct net_bridge *br,
841 const struct net_bridge_port *p, u16 vid, int do_all);
842 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
843 const unsigned char *addr,
844 __u16 vid);
845 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
846 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
847 unsigned long off);
848 int br_fdb_add_local(struct net_bridge *br, struct net_bridge_port *source,
849 const unsigned char *addr, u16 vid);
850 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
851 const unsigned char *addr, u16 vid, unsigned long flags);
852
853 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
854 struct net_device *dev, const unsigned char *addr, u16 vid,
855 struct netlink_ext_ack *extack);
856 int br_fdb_delete_bulk(struct nlmsghdr *nlh, struct net_device *dev,
857 struct netlink_ext_ack *extack);
858 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
859 const unsigned char *addr, u16 vid, u16 nlh_flags,
860 struct netlink_ext_ack *extack);
861 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
862 struct net_device *dev, struct net_device *fdev, int *idx);
863 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
864 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
865 struct netlink_ext_ack *extack);
866 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
867 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
868 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
869 const unsigned char *addr, u16 vid,
870 bool locked, bool swdev_notify);
871 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
872 const unsigned char *addr, u16 vid,
873 bool swdev_notify);
874 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
875 const unsigned char *addr, u16 vid, bool offloaded);
876
877 /* br_forward.c */
878 enum br_pkt_type {
879 BR_PKT_UNICAST,
880 BR_PKT_MULTICAST,
881 BR_PKT_BROADCAST
882 };
883 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
884 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
885 bool local_rcv, bool local_orig);
886 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
887 void br_flood(struct net_bridge *br, struct sk_buff *skb,
888 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig,
889 u16 vid);
890
891 /* 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)892 static inline bool br_skb_isolated(const struct net_bridge_port *to,
893 const struct sk_buff *skb)
894 {
895 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
896 (to->flags & BR_ISOLATED);
897 }
898
899 /* br_if.c */
900 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
901 int br_add_bridge(struct net *net, const char *name);
902 int br_del_bridge(struct net *net, const char *name);
903 int br_add_if(struct net_bridge *br, struct net_device *dev,
904 struct netlink_ext_ack *extack);
905 int br_del_if(struct net_bridge *br, struct net_device *dev);
906 void br_mtu_auto_adjust(struct net_bridge *br);
907 netdev_features_t br_features_recompute(struct net_bridge *br,
908 netdev_features_t features);
909 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
910 void br_manage_promisc(struct net_bridge *br);
911 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
912
913 /* br_input.c */
914 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
915 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev);
916
917 struct br_frame_type {
918 __be16 type;
919 int (*frame_handler)(struct net_bridge_port *port,
920 struct sk_buff *skb);
921 struct hlist_node list;
922 };
923
924 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft);
925 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft);
926
br_rx_handler_check_rcu(const struct net_device * dev)927 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
928 {
929 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev);
930 }
931
br_rx_handler_check_rtnl(const struct net_device * dev)932 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
933 {
934 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev);
935 }
936
br_port_get_check_rcu(const struct net_device * dev)937 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
938 {
939 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
940 }
941
942 static inline struct net_bridge_port *
br_port_get_check_rtnl(const struct net_device * dev)943 br_port_get_check_rtnl(const struct net_device *dev)
944 {
945 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
946 }
947
948 /* br_ioctl.c */
949 int br_dev_siocdevprivate(struct net_device *dev, struct ifreq *rq,
950 void __user *data, int cmd);
951 int br_ioctl_stub(struct net *net, struct net_bridge *br, unsigned int cmd,
952 struct ifreq *ifr, void __user *uarg);
953
954 /* br_multicast.c */
955 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
956 int br_multicast_rcv(struct net_bridge_mcast **brmctx,
957 struct net_bridge_mcast_port **pmctx,
958 struct net_bridge_vlan *vlan,
959 struct sk_buff *skb, u16 vid);
960 struct net_bridge_mdb_entry *
961 br_mdb_entry_skb_get(struct net_bridge_mcast *brmctx, struct sk_buff *skb,
962 u16 vid);
963 int br_multicast_add_port(struct net_bridge_port *port);
964 void br_multicast_del_port(struct net_bridge_port *port);
965 void br_multicast_enable_port(struct net_bridge_port *port);
966 void br_multicast_disable_port(struct net_bridge_port *port);
967 void br_multicast_init(struct net_bridge *br);
968 void br_multicast_join_snoopers(struct net_bridge *br);
969 void br_multicast_leave_snoopers(struct net_bridge *br);
970 void br_multicast_open(struct net_bridge *br);
971 void br_multicast_stop(struct net_bridge *br);
972 void br_multicast_dev_del(struct net_bridge *br);
973 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb,
974 struct net_bridge_mcast *brmctx,
975 bool local_rcv, bool local_orig);
976 int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val);
977 int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx,
978 unsigned long val);
979 int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router);
980 int br_multicast_toggle(struct net_bridge *br, unsigned long val,
981 struct netlink_ext_ack *extack);
982 int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val);
983 int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx,
984 unsigned long val);
985 #if IS_ENABLED(CONFIG_IPV6)
986 int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx,
987 unsigned long val);
988 #endif
989 struct net_bridge_mdb_entry *
990 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
991 struct net_bridge_mdb_entry *
992 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
993 struct net_bridge_port_group *
994 br_multicast_new_port_group(struct net_bridge_port *port,
995 const struct br_ip *group,
996 struct net_bridge_port_group __rcu *next,
997 unsigned char flags, const unsigned char *src,
998 u8 filter_mode, u8 rt_protocol,
999 struct netlink_ext_ack *extack);
1000 void br_multicast_del_port_group(struct net_bridge_port_group *p);
1001 int br_mdb_hash_init(struct net_bridge *br);
1002 void br_mdb_hash_fini(struct net_bridge *br);
1003 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
1004 struct net_bridge_port_group *pg, int type);
1005 void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx,
1006 int type);
1007 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
1008 struct net_bridge_port_group *pg,
1009 struct net_bridge_port_group __rcu **pp);
1010 void br_multicast_count(struct net_bridge *br,
1011 const struct net_bridge_port *p,
1012 const struct sk_buff *skb, u8 type, u8 dir);
1013 int br_multicast_init_stats(struct net_bridge *br);
1014 void br_multicast_uninit_stats(struct net_bridge *br);
1015 void br_multicast_get_stats(const struct net_bridge *br,
1016 const struct net_bridge_port *p,
1017 struct br_mcast_stats *dest);
1018 u32 br_multicast_ngroups_get(const struct net_bridge_mcast_port *pmctx);
1019 void br_multicast_ngroups_set_max(struct net_bridge_mcast_port *pmctx, u32 max);
1020 u32 br_multicast_ngroups_get_max(const struct net_bridge_mcast_port *pmctx);
1021 int br_mdb_add(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
1022 struct netlink_ext_ack *extack);
1023 int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
1024 struct netlink_ext_ack *extack);
1025 int br_mdb_del_bulk(struct net_device *dev, struct nlattr *tb[],
1026 struct netlink_ext_ack *extack);
1027 int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
1028 struct netlink_callback *cb);
1029 int br_mdb_get(struct net_device *dev, struct nlattr *tb[], u32 portid, u32 seq,
1030 struct netlink_ext_ack *extack);
1031 void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
1032 struct net_bridge_mdb_entry *mp, bool notify);
1033 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
1034 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
1035 u8 filter_mode);
1036 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
1037 struct net_bridge_port_group *sg);
1038 struct net_bridge_group_src *
1039 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip);
1040 struct net_bridge_group_src *
1041 br_multicast_new_group_src(struct net_bridge_port_group *pg,
1042 struct br_ip *src_ip);
1043 void __br_multicast_del_group_src(struct net_bridge_group_src *src);
1044 void br_multicast_del_group_src(struct net_bridge_group_src *src,
1045 bool fastleave);
1046 void br_multicast_ctx_init(struct net_bridge *br,
1047 struct net_bridge_vlan *vlan,
1048 struct net_bridge_mcast *brmctx);
1049 void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx);
1050 void br_multicast_port_ctx_init(struct net_bridge_port *port,
1051 struct net_bridge_vlan *vlan,
1052 struct net_bridge_mcast_port *pmctx);
1053 void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx);
1054 void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on);
1055 int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on,
1056 struct netlink_ext_ack *extack);
1057 bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on);
1058
1059 int br_rports_fill_info(struct sk_buff *skb,
1060 const struct net_bridge_mcast *brmctx);
1061 int br_multicast_dump_querier_state(struct sk_buff *skb,
1062 const struct net_bridge_mcast *brmctx,
1063 int nest_attr);
1064 size_t br_multicast_querier_state_size(void);
1065 size_t br_rports_size(const struct net_bridge_mcast *brmctx);
1066 void br_multicast_set_query_intvl(struct net_bridge_mcast *brmctx,
1067 unsigned long val);
1068 void br_multicast_set_startup_query_intvl(struct net_bridge_mcast *brmctx,
1069 unsigned long val);
1070
br_group_is_l2(const struct br_ip * group)1071 static inline bool br_group_is_l2(const struct br_ip *group)
1072 {
1073 return group->proto == 0;
1074 }
1075
1076 #define mlock_dereference(X, br) \
1077 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
1078
1079 static inline struct hlist_node *
br_multicast_get_first_rport_node(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1080 br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx,
1081 struct sk_buff *skb)
1082 {
1083 #if IS_ENABLED(CONFIG_IPV6)
1084 if (skb->protocol == htons(ETH_P_IPV6))
1085 return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list));
1086 #endif
1087 return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list));
1088 }
1089
1090 static inline struct net_bridge_port *
br_multicast_rport_from_node_skb(struct hlist_node * rp,struct sk_buff * skb)1091 br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb)
1092 {
1093 struct net_bridge_mcast_port *mctx;
1094
1095 #if IS_ENABLED(CONFIG_IPV6)
1096 if (skb->protocol == htons(ETH_P_IPV6))
1097 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
1098 ip6_rlist);
1099 else
1100 #endif
1101 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
1102 ip4_rlist);
1103
1104 if (mctx)
1105 return mctx->port;
1106 else
1107 return NULL;
1108 }
1109
br_ip4_multicast_is_router(struct net_bridge_mcast * brmctx)1110 static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx)
1111 {
1112 return timer_pending(&brmctx->ip4_mc_router_timer);
1113 }
1114
br_ip6_multicast_is_router(struct net_bridge_mcast * brmctx)1115 static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx)
1116 {
1117 #if IS_ENABLED(CONFIG_IPV6)
1118 return timer_pending(&brmctx->ip6_mc_router_timer);
1119 #else
1120 return false;
1121 #endif
1122 }
1123
1124 static inline bool
br_multicast_is_router(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1125 br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb)
1126 {
1127 switch (brmctx->multicast_router) {
1128 case MDB_RTR_TYPE_PERM:
1129 return true;
1130 case MDB_RTR_TYPE_TEMP_QUERY:
1131 if (skb) {
1132 if (skb->protocol == htons(ETH_P_IP))
1133 return br_ip4_multicast_is_router(brmctx);
1134 else if (skb->protocol == htons(ETH_P_IPV6))
1135 return br_ip6_multicast_is_router(brmctx);
1136 } else {
1137 return br_ip4_multicast_is_router(brmctx) ||
1138 br_ip6_multicast_is_router(brmctx);
1139 }
1140 fallthrough;
1141 default:
1142 return false;
1143 }
1144 }
1145
1146 static inline bool
__br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct bridge_mcast_other_query * querier,const bool is_ipv6)1147 __br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1148 struct bridge_mcast_other_query *querier,
1149 const bool is_ipv6)
1150 {
1151 bool own_querier_enabled;
1152
1153 if (brmctx->multicast_querier) {
1154 if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR))
1155 own_querier_enabled = false;
1156 else
1157 own_querier_enabled = true;
1158 } else {
1159 own_querier_enabled = false;
1160 }
1161
1162 return !timer_pending(&querier->delay_timer) &&
1163 (own_querier_enabled || timer_pending(&querier->timer));
1164 }
1165
br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct ethhdr * eth,const struct net_bridge_mdb_entry * mdb)1166 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1167 struct ethhdr *eth,
1168 const struct net_bridge_mdb_entry *mdb)
1169 {
1170 switch (eth->h_proto) {
1171 case (htons(ETH_P_IP)):
1172 return __br_multicast_querier_exists(brmctx,
1173 &brmctx->ip4_other_query, false);
1174 #if IS_ENABLED(CONFIG_IPV6)
1175 case (htons(ETH_P_IPV6)):
1176 return __br_multicast_querier_exists(brmctx,
1177 &brmctx->ip6_other_query, true);
1178 #endif
1179 default:
1180 return !!mdb && br_group_is_l2(&mdb->addr);
1181 }
1182 }
1183
br_multicast_is_star_g(const struct br_ip * ip)1184 static inline bool br_multicast_is_star_g(const struct br_ip *ip)
1185 {
1186 switch (ip->proto) {
1187 case htons(ETH_P_IP):
1188 return ipv4_is_zeronet(ip->src.ip4);
1189 #if IS_ENABLED(CONFIG_IPV6)
1190 case htons(ETH_P_IPV6):
1191 return ipv6_addr_any(&ip->src.ip6);
1192 #endif
1193 default:
1194 return false;
1195 }
1196 }
1197
1198 static inline bool
br_multicast_should_handle_mode(const struct net_bridge_mcast * brmctx,__be16 proto)1199 br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx,
1200 __be16 proto)
1201 {
1202 switch (proto) {
1203 case htons(ETH_P_IP):
1204 return !!(brmctx->multicast_igmp_version == 3);
1205 #if IS_ENABLED(CONFIG_IPV6)
1206 case htons(ETH_P_IPV6):
1207 return !!(brmctx->multicast_mld_version == 2);
1208 #endif
1209 default:
1210 return false;
1211 }
1212 }
1213
br_multicast_igmp_type(const struct sk_buff * skb)1214 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1215 {
1216 return BR_INPUT_SKB_CB(skb)->igmp;
1217 }
1218
br_multicast_lmqt(const struct net_bridge_mcast * brmctx)1219 static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx)
1220 {
1221 return brmctx->multicast_last_member_interval *
1222 brmctx->multicast_last_member_count;
1223 }
1224
br_multicast_gmi(const struct net_bridge_mcast * brmctx)1225 static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx)
1226 {
1227 return brmctx->multicast_membership_interval;
1228 }
1229
1230 static inline bool
br_multicast_ctx_is_vlan(const struct net_bridge_mcast * brmctx)1231 br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx)
1232 {
1233 return !!brmctx->vlan;
1234 }
1235
1236 static inline bool
br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port * pmctx)1237 br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx)
1238 {
1239 return !!pmctx->vlan;
1240 }
1241
1242 static inline struct net_bridge_mcast *
br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port * pmctx)1243 br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx)
1244 {
1245 if (!br_multicast_port_ctx_is_vlan(pmctx))
1246 return &pmctx->port->br->multicast_ctx;
1247 else
1248 return &pmctx->vlan->brvlan->br_mcast_ctx;
1249 }
1250
1251 static inline bool
br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast * brmctx)1252 br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx)
1253 {
1254 return br_multicast_ctx_is_vlan(brmctx) &&
1255 (!br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) ||
1256 !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED));
1257 }
1258
1259 static inline bool
br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast * brmctx)1260 br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx)
1261 {
1262 return br_multicast_ctx_is_vlan(brmctx) &&
1263 !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
1264 }
1265
1266 static inline bool
br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port * pmctx)1267 br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx)
1268 {
1269 return br_multicast_port_ctx_is_vlan(pmctx) &&
1270 !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
1271 }
1272
1273 static inline bool
br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port * pmctx)1274 br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx)
1275 {
1276 return pmctx->port->state == BR_STATE_DISABLED ||
1277 (br_multicast_port_ctx_is_vlan(pmctx) &&
1278 (br_multicast_port_ctx_vlan_disabled(pmctx) ||
1279 pmctx->vlan->state == BR_STATE_DISABLED));
1280 }
1281
1282 static inline bool
br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port * pmctx)1283 br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx)
1284 {
1285 return br_multicast_port_ctx_state_disabled(pmctx) ||
1286 pmctx->port->state == BR_STATE_BLOCKING ||
1287 (br_multicast_port_ctx_is_vlan(pmctx) &&
1288 pmctx->vlan->state == BR_STATE_BLOCKING);
1289 }
1290
1291 static inline bool
br_rports_have_mc_router(const struct net_bridge_mcast * brmctx)1292 br_rports_have_mc_router(const struct net_bridge_mcast *brmctx)
1293 {
1294 #if IS_ENABLED(CONFIG_IPV6)
1295 return !hlist_empty(&brmctx->ip4_mc_router_list) ||
1296 !hlist_empty(&brmctx->ip6_mc_router_list);
1297 #else
1298 return !hlist_empty(&brmctx->ip4_mc_router_list);
1299 #endif
1300 }
1301
1302 static inline bool
br_multicast_ctx_options_equal(const struct net_bridge_mcast * brmctx1,const struct net_bridge_mcast * brmctx2)1303 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
1304 const struct net_bridge_mcast *brmctx2)
1305 {
1306 return brmctx1->multicast_igmp_version ==
1307 brmctx2->multicast_igmp_version &&
1308 brmctx1->multicast_last_member_count ==
1309 brmctx2->multicast_last_member_count &&
1310 brmctx1->multicast_startup_query_count ==
1311 brmctx2->multicast_startup_query_count &&
1312 brmctx1->multicast_last_member_interval ==
1313 brmctx2->multicast_last_member_interval &&
1314 brmctx1->multicast_membership_interval ==
1315 brmctx2->multicast_membership_interval &&
1316 brmctx1->multicast_querier_interval ==
1317 brmctx2->multicast_querier_interval &&
1318 brmctx1->multicast_query_interval ==
1319 brmctx2->multicast_query_interval &&
1320 brmctx1->multicast_query_response_interval ==
1321 brmctx2->multicast_query_response_interval &&
1322 brmctx1->multicast_startup_query_interval ==
1323 brmctx2->multicast_startup_query_interval &&
1324 brmctx1->multicast_querier == brmctx2->multicast_querier &&
1325 brmctx1->multicast_router == brmctx2->multicast_router &&
1326 !br_rports_have_mc_router(brmctx1) &&
1327 !br_rports_have_mc_router(brmctx2) &&
1328 #if IS_ENABLED(CONFIG_IPV6)
1329 brmctx1->multicast_mld_version ==
1330 brmctx2->multicast_mld_version &&
1331 #endif
1332 true;
1333 }
1334
1335 static inline bool
br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast * brmctx)1336 br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast *brmctx)
1337 {
1338 bool vlan_snooping_enabled;
1339
1340 vlan_snooping_enabled = !!br_opt_get(brmctx->br,
1341 BROPT_MCAST_VLAN_SNOOPING_ENABLED);
1342
1343 return !!(vlan_snooping_enabled == br_multicast_ctx_is_vlan(brmctx));
1344 }
1345 #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)1346 static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx,
1347 struct net_bridge_mcast_port **pmctx,
1348 struct net_bridge_vlan *vlan,
1349 struct sk_buff *skb,
1350 u16 vid)
1351 {
1352 return 0;
1353 }
1354
1355 static inline struct net_bridge_mdb_entry *
br_mdb_entry_skb_get(struct net_bridge_mcast * brmctx,struct sk_buff * skb,u16 vid)1356 br_mdb_entry_skb_get(struct net_bridge_mcast *brmctx, struct sk_buff *skb,
1357 u16 vid)
1358 {
1359 return NULL;
1360 }
1361
br_multicast_add_port(struct net_bridge_port * port)1362 static inline int br_multicast_add_port(struct net_bridge_port *port)
1363 {
1364 return 0;
1365 }
1366
br_multicast_del_port(struct net_bridge_port * port)1367 static inline void br_multicast_del_port(struct net_bridge_port *port)
1368 {
1369 }
1370
br_multicast_enable_port(struct net_bridge_port * port)1371 static inline void br_multicast_enable_port(struct net_bridge_port *port)
1372 {
1373 }
1374
br_multicast_disable_port(struct net_bridge_port * port)1375 static inline void br_multicast_disable_port(struct net_bridge_port *port)
1376 {
1377 }
1378
br_multicast_init(struct net_bridge * br)1379 static inline void br_multicast_init(struct net_bridge *br)
1380 {
1381 }
1382
br_multicast_join_snoopers(struct net_bridge * br)1383 static inline void br_multicast_join_snoopers(struct net_bridge *br)
1384 {
1385 }
1386
br_multicast_leave_snoopers(struct net_bridge * br)1387 static inline void br_multicast_leave_snoopers(struct net_bridge *br)
1388 {
1389 }
1390
br_multicast_open(struct net_bridge * br)1391 static inline void br_multicast_open(struct net_bridge *br)
1392 {
1393 }
1394
br_multicast_stop(struct net_bridge * br)1395 static inline void br_multicast_stop(struct net_bridge *br)
1396 {
1397 }
1398
br_multicast_dev_del(struct net_bridge * br)1399 static inline void br_multicast_dev_del(struct net_bridge *br)
1400 {
1401 }
1402
br_multicast_flood(struct net_bridge_mdb_entry * mdst,struct sk_buff * skb,struct net_bridge_mcast * brmctx,bool local_rcv,bool local_orig)1403 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1404 struct sk_buff *skb,
1405 struct net_bridge_mcast *brmctx,
1406 bool local_rcv, bool local_orig)
1407 {
1408 }
1409
br_multicast_is_router(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1410 static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx,
1411 struct sk_buff *skb)
1412 {
1413 return false;
1414 }
1415
br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct ethhdr * eth,const struct net_bridge_mdb_entry * mdb)1416 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1417 struct ethhdr *eth,
1418 const struct net_bridge_mdb_entry *mdb)
1419 {
1420 return false;
1421 }
1422
br_mdb_add(struct net_device * dev,struct nlattr * tb[],u16 nlmsg_flags,struct netlink_ext_ack * extack)1423 static inline int br_mdb_add(struct net_device *dev, struct nlattr *tb[],
1424 u16 nlmsg_flags, struct netlink_ext_ack *extack)
1425 {
1426 return -EOPNOTSUPP;
1427 }
1428
br_mdb_del(struct net_device * dev,struct nlattr * tb[],struct netlink_ext_ack * extack)1429 static inline int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
1430 struct netlink_ext_ack *extack)
1431 {
1432 return -EOPNOTSUPP;
1433 }
1434
br_mdb_del_bulk(struct net_device * dev,struct nlattr * tb[],struct netlink_ext_ack * extack)1435 static inline int br_mdb_del_bulk(struct net_device *dev, struct nlattr *tb[],
1436 struct netlink_ext_ack *extack)
1437 {
1438 return -EOPNOTSUPP;
1439 }
1440
br_mdb_dump(struct net_device * dev,struct sk_buff * skb,struct netlink_callback * cb)1441 static inline int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
1442 struct netlink_callback *cb)
1443 {
1444 return 0;
1445 }
1446
br_mdb_get(struct net_device * dev,struct nlattr * tb[],u32 portid,u32 seq,struct netlink_ext_ack * extack)1447 static inline int br_mdb_get(struct net_device *dev, struct nlattr *tb[],
1448 u32 portid, u32 seq,
1449 struct netlink_ext_ack *extack)
1450 {
1451 return -EOPNOTSUPP;
1452 }
1453
br_mdb_hash_init(struct net_bridge * br)1454 static inline int br_mdb_hash_init(struct net_bridge *br)
1455 {
1456 return 0;
1457 }
1458
br_mdb_hash_fini(struct net_bridge * br)1459 static inline void br_mdb_hash_fini(struct net_bridge *br)
1460 {
1461 }
1462
br_multicast_count(struct net_bridge * br,const struct net_bridge_port * p,const struct sk_buff * skb,u8 type,u8 dir)1463 static inline void br_multicast_count(struct net_bridge *br,
1464 const struct net_bridge_port *p,
1465 const struct sk_buff *skb,
1466 u8 type, u8 dir)
1467 {
1468 }
1469
br_multicast_init_stats(struct net_bridge * br)1470 static inline int br_multicast_init_stats(struct net_bridge *br)
1471 {
1472 return 0;
1473 }
1474
br_multicast_uninit_stats(struct net_bridge * br)1475 static inline void br_multicast_uninit_stats(struct net_bridge *br)
1476 {
1477 }
1478
br_multicast_igmp_type(const struct sk_buff * skb)1479 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1480 {
1481 return 0;
1482 }
1483
br_multicast_ctx_init(struct net_bridge * br,struct net_bridge_vlan * vlan,struct net_bridge_mcast * brmctx)1484 static inline void br_multicast_ctx_init(struct net_bridge *br,
1485 struct net_bridge_vlan *vlan,
1486 struct net_bridge_mcast *brmctx)
1487 {
1488 }
1489
br_multicast_ctx_deinit(struct net_bridge_mcast * brmctx)1490 static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx)
1491 {
1492 }
1493
br_multicast_port_ctx_init(struct net_bridge_port * port,struct net_bridge_vlan * vlan,struct net_bridge_mcast_port * pmctx)1494 static inline void br_multicast_port_ctx_init(struct net_bridge_port *port,
1495 struct net_bridge_vlan *vlan,
1496 struct net_bridge_mcast_port *pmctx)
1497 {
1498 }
1499
br_multicast_port_ctx_deinit(struct net_bridge_mcast_port * pmctx)1500 static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx)
1501 {
1502 }
1503
br_multicast_toggle_one_vlan(struct net_bridge_vlan * vlan,bool on)1504 static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan,
1505 bool on)
1506 {
1507 }
1508
br_multicast_toggle_vlan_snooping(struct net_bridge * br,bool on,struct netlink_ext_ack * extack)1509 static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br,
1510 bool on,
1511 struct netlink_ext_ack *extack)
1512 {
1513 return -EOPNOTSUPP;
1514 }
1515
br_multicast_toggle_global_vlan(struct net_bridge_vlan * vlan,bool on)1516 static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan,
1517 bool on)
1518 {
1519 return false;
1520 }
1521
1522 static inline bool
br_multicast_ctx_options_equal(const struct net_bridge_mcast * brmctx1,const struct net_bridge_mcast * brmctx2)1523 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
1524 const struct net_bridge_mcast *brmctx2)
1525 {
1526 return true;
1527 }
1528 #endif
1529
1530 /* br_vlan.c */
1531 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1532 bool br_allowed_ingress(const struct net_bridge *br,
1533 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1534 u16 *vid, u8 *state,
1535 struct net_bridge_vlan **vlan);
1536 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1537 const struct sk_buff *skb);
1538 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1539 struct sk_buff *br_handle_vlan(struct net_bridge *br,
1540 const struct net_bridge_port *port,
1541 struct net_bridge_vlan_group *vg,
1542 struct sk_buff *skb);
1543 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1544 bool *changed, struct netlink_ext_ack *extack);
1545 int br_vlan_delete(struct net_bridge *br, u16 vid);
1546 void br_vlan_flush(struct net_bridge *br);
1547 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1548 void br_recalculate_fwd_mask(struct net_bridge *br);
1549 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val,
1550 struct netlink_ext_ack *extack);
1551 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto,
1552 struct netlink_ext_ack *extack);
1553 int br_vlan_set_proto(struct net_bridge *br, unsigned long val,
1554 struct netlink_ext_ack *extack);
1555 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1556 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1557 int br_vlan_init(struct net_bridge *br);
1558 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val,
1559 struct netlink_ext_ack *extack);
1560 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1561 struct netlink_ext_ack *extack);
1562 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1563 bool *changed, struct netlink_ext_ack *extack);
1564 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1565 void nbp_vlan_flush(struct net_bridge_port *port);
1566 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1567 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1568 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1569 struct pcpu_sw_netstats *stats);
1570 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1571 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1572 void *ptr);
1573 void br_vlan_rtnl_init(void);
1574 void br_vlan_rtnl_uninit(void);
1575 void br_vlan_notify(const struct net_bridge *br,
1576 const struct net_bridge_port *p,
1577 u16 vid, u16 vid_range,
1578 int cmd);
1579 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1580 const struct net_bridge_vlan *range_end);
1581
1582 void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1583 struct net_device_path_ctx *ctx,
1584 struct net_device_path *path);
1585 int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1586 struct net_bridge_port *dst,
1587 struct net_device_path *path);
1588
br_vlan_group(const struct net_bridge * br)1589 static inline struct net_bridge_vlan_group *br_vlan_group(
1590 const struct net_bridge *br)
1591 {
1592 return rtnl_dereference(br->vlgrp);
1593 }
1594
nbp_vlan_group(const struct net_bridge_port * p)1595 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1596 const struct net_bridge_port *p)
1597 {
1598 return rtnl_dereference(p->vlgrp);
1599 }
1600
br_vlan_group_rcu(const struct net_bridge * br)1601 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1602 const struct net_bridge *br)
1603 {
1604 return rcu_dereference(br->vlgrp);
1605 }
1606
nbp_vlan_group_rcu(const struct net_bridge_port * p)1607 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1608 const struct net_bridge_port *p)
1609 {
1610 return rcu_dereference(p->vlgrp);
1611 }
1612
1613 /* Since bridge now depends on 8021Q module, but the time bridge sees the
1614 * skb, the vlan tag will always be present if the frame was tagged.
1615 */
br_vlan_get_tag(const struct sk_buff * skb,u16 * vid)1616 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1617 {
1618 int err = 0;
1619
1620 if (skb_vlan_tag_present(skb)) {
1621 *vid = skb_vlan_tag_get_id(skb);
1622 } else {
1623 *vid = 0;
1624 err = -EINVAL;
1625 }
1626
1627 return err;
1628 }
1629
br_get_pvid(const struct net_bridge_vlan_group * vg)1630 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1631 {
1632 if (!vg)
1633 return 0;
1634
1635 smp_rmb();
1636 return vg->pvid;
1637 }
1638
br_vlan_flags(const struct net_bridge_vlan * v,u16 pvid)1639 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1640 {
1641 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1642 }
1643 #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)1644 static inline bool br_allowed_ingress(const struct net_bridge *br,
1645 struct net_bridge_vlan_group *vg,
1646 struct sk_buff *skb,
1647 u16 *vid, u8 *state,
1648 struct net_bridge_vlan **vlan)
1649
1650 {
1651 *vlan = NULL;
1652 return true;
1653 }
1654
br_allowed_egress(struct net_bridge_vlan_group * vg,const struct sk_buff * skb)1655 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1656 const struct sk_buff *skb)
1657 {
1658 return true;
1659 }
1660
br_should_learn(struct net_bridge_port * p,struct sk_buff * skb,u16 * vid)1661 static inline bool br_should_learn(struct net_bridge_port *p,
1662 struct sk_buff *skb, u16 *vid)
1663 {
1664 return true;
1665 }
1666
br_handle_vlan(struct net_bridge * br,const struct net_bridge_port * port,struct net_bridge_vlan_group * vg,struct sk_buff * skb)1667 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1668 const struct net_bridge_port *port,
1669 struct net_bridge_vlan_group *vg,
1670 struct sk_buff *skb)
1671 {
1672 return skb;
1673 }
1674
br_vlan_add(struct net_bridge * br,u16 vid,u16 flags,bool * changed,struct netlink_ext_ack * extack)1675 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1676 bool *changed, struct netlink_ext_ack *extack)
1677 {
1678 *changed = false;
1679 return -EOPNOTSUPP;
1680 }
1681
br_vlan_delete(struct net_bridge * br,u16 vid)1682 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1683 {
1684 return -EOPNOTSUPP;
1685 }
1686
br_vlan_flush(struct net_bridge * br)1687 static inline void br_vlan_flush(struct net_bridge *br)
1688 {
1689 }
1690
br_recalculate_fwd_mask(struct net_bridge * br)1691 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1692 {
1693 }
1694
br_vlan_init(struct net_bridge * br)1695 static inline int br_vlan_init(struct net_bridge *br)
1696 {
1697 return 0;
1698 }
1699
nbp_vlan_add(struct net_bridge_port * port,u16 vid,u16 flags,bool * changed,struct netlink_ext_ack * extack)1700 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1701 bool *changed, struct netlink_ext_ack *extack)
1702 {
1703 *changed = false;
1704 return -EOPNOTSUPP;
1705 }
1706
nbp_vlan_delete(struct net_bridge_port * port,u16 vid)1707 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1708 {
1709 return -EOPNOTSUPP;
1710 }
1711
nbp_vlan_flush(struct net_bridge_port * port)1712 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1713 {
1714 }
1715
br_vlan_find(struct net_bridge_vlan_group * vg,u16 vid)1716 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1717 u16 vid)
1718 {
1719 return NULL;
1720 }
1721
nbp_vlan_init(struct net_bridge_port * port,struct netlink_ext_ack * extack)1722 static inline int nbp_vlan_init(struct net_bridge_port *port,
1723 struct netlink_ext_ack *extack)
1724 {
1725 return 0;
1726 }
1727
br_vlan_get_tag(const struct sk_buff * skb,u16 * tag)1728 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1729 {
1730 return 0;
1731 }
1732
br_get_pvid(const struct net_bridge_vlan_group * vg)1733 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1734 {
1735 return 0;
1736 }
1737
br_vlan_filter_toggle(struct net_bridge * br,unsigned long val,struct netlink_ext_ack * extack)1738 static inline int br_vlan_filter_toggle(struct net_bridge *br,
1739 unsigned long val,
1740 struct netlink_ext_ack *extack)
1741 {
1742 return -EOPNOTSUPP;
1743 }
1744
nbp_get_num_vlan_infos(struct net_bridge_port * p,u32 filter_mask)1745 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1746 u32 filter_mask)
1747 {
1748 return 0;
1749 }
1750
br_vlan_fill_forward_path_pvid(struct net_bridge * br,struct net_device_path_ctx * ctx,struct net_device_path * path)1751 static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1752 struct net_device_path_ctx *ctx,
1753 struct net_device_path *path)
1754 {
1755 }
1756
br_vlan_fill_forward_path_mode(struct net_bridge * br,struct net_bridge_port * dst,struct net_device_path * path)1757 static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1758 struct net_bridge_port *dst,
1759 struct net_device_path *path)
1760 {
1761 return 0;
1762 }
1763
br_vlan_group(const struct net_bridge * br)1764 static inline struct net_bridge_vlan_group *br_vlan_group(
1765 const struct net_bridge *br)
1766 {
1767 return NULL;
1768 }
1769
nbp_vlan_group(const struct net_bridge_port * p)1770 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1771 const struct net_bridge_port *p)
1772 {
1773 return NULL;
1774 }
1775
br_vlan_group_rcu(const struct net_bridge * br)1776 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1777 const struct net_bridge *br)
1778 {
1779 return NULL;
1780 }
1781
nbp_vlan_group_rcu(const struct net_bridge_port * p)1782 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1783 const struct net_bridge_port *p)
1784 {
1785 return NULL;
1786 }
1787
br_vlan_get_stats(const struct net_bridge_vlan * v,struct pcpu_sw_netstats * stats)1788 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1789 struct pcpu_sw_netstats *stats)
1790 {
1791 }
1792
br_vlan_port_event(struct net_bridge_port * p,unsigned long event)1793 static inline void br_vlan_port_event(struct net_bridge_port *p,
1794 unsigned long event)
1795 {
1796 }
1797
br_vlan_bridge_event(struct net_device * dev,unsigned long event,void * ptr)1798 static inline int br_vlan_bridge_event(struct net_device *dev,
1799 unsigned long event, void *ptr)
1800 {
1801 return 0;
1802 }
1803
br_vlan_rtnl_init(void)1804 static inline void br_vlan_rtnl_init(void)
1805 {
1806 }
1807
br_vlan_rtnl_uninit(void)1808 static inline void br_vlan_rtnl_uninit(void)
1809 {
1810 }
1811
br_vlan_notify(const struct net_bridge * br,const struct net_bridge_port * p,u16 vid,u16 vid_range,int cmd)1812 static inline void br_vlan_notify(const struct net_bridge *br,
1813 const struct net_bridge_port *p,
1814 u16 vid, u16 vid_range,
1815 int cmd)
1816 {
1817 }
1818
br_vlan_can_enter_range(const struct net_bridge_vlan * v_curr,const struct net_bridge_vlan * range_end)1819 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1820 const struct net_bridge_vlan *range_end)
1821 {
1822 return true;
1823 }
1824
br_vlan_flags(const struct net_bridge_vlan * v,u16 pvid)1825 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1826 {
1827 return 0;
1828 }
1829
1830 #endif
1831
1832 /* br_vlan_options.c */
1833 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1834 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1835 const struct net_bridge_vlan *range_end);
1836 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v,
1837 const struct net_bridge_port *p);
1838 size_t br_vlan_opts_nl_size(void);
1839 int br_vlan_process_options(const struct net_bridge *br,
1840 const struct net_bridge_port *p,
1841 struct net_bridge_vlan *range_start,
1842 struct net_bridge_vlan *range_end,
1843 struct nlattr **tb,
1844 struct netlink_ext_ack *extack);
1845 int br_vlan_rtm_process_global_options(struct net_device *dev,
1846 const struct nlattr *attr,
1847 int cmd,
1848 struct netlink_ext_ack *extack);
1849 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
1850 const struct net_bridge_vlan *r_end);
1851 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
1852 const struct net_bridge_vlan *v_opts);
1853
1854 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */
br_vlan_get_state(const struct net_bridge_vlan * v)1855 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1856 {
1857 return READ_ONCE(v->state);
1858 }
1859
br_vlan_set_state(struct net_bridge_vlan * v,u8 state)1860 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1861 {
1862 WRITE_ONCE(v->state, state);
1863 }
1864
br_vlan_get_pvid_state(const struct net_bridge_vlan_group * vg)1865 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1866 {
1867 return READ_ONCE(vg->pvid_state);
1868 }
1869
br_vlan_set_pvid_state(struct net_bridge_vlan_group * vg,u8 state)1870 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1871 u8 state)
1872 {
1873 WRITE_ONCE(vg->pvid_state, state);
1874 }
1875
1876 /* learn_allow is true at ingress and false at egress */
br_vlan_state_allowed(u8 state,bool learn_allow)1877 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1878 {
1879 switch (state) {
1880 case BR_STATE_LEARNING:
1881 return learn_allow;
1882 case BR_STATE_FORWARDING:
1883 return true;
1884 default:
1885 return false;
1886 }
1887 }
1888 #endif
1889
1890 /* br_mst.c */
1891 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1892 DECLARE_STATIC_KEY_FALSE(br_mst_used);
br_mst_is_enabled(struct net_bridge * br)1893 static inline bool br_mst_is_enabled(struct net_bridge *br)
1894 {
1895 return static_branch_unlikely(&br_mst_used) &&
1896 br_opt_get(br, BROPT_MST_ENABLED);
1897 }
1898
1899 int br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state,
1900 struct netlink_ext_ack *extack);
1901 int br_mst_vlan_set_msti(struct net_bridge_vlan *v, u16 msti);
1902 void br_mst_vlan_init_state(struct net_bridge_vlan *v);
1903 int br_mst_set_enabled(struct net_bridge *br, bool on,
1904 struct netlink_ext_ack *extack);
1905 size_t br_mst_info_size(const struct net_bridge_vlan_group *vg);
1906 int br_mst_fill_info(struct sk_buff *skb,
1907 const struct net_bridge_vlan_group *vg);
1908 int br_mst_process(struct net_bridge_port *p, const struct nlattr *mst_attr,
1909 struct netlink_ext_ack *extack);
1910 #else
br_mst_is_enabled(struct net_bridge * br)1911 static inline bool br_mst_is_enabled(struct net_bridge *br)
1912 {
1913 return false;
1914 }
1915
br_mst_set_state(struct net_bridge_port * p,u16 msti,u8 state,struct netlink_ext_ack * extack)1916 static inline int br_mst_set_state(struct net_bridge_port *p, u16 msti,
1917 u8 state, struct netlink_ext_ack *extack)
1918 {
1919 return -EOPNOTSUPP;
1920 }
1921
br_mst_set_enabled(struct net_bridge * br,bool on,struct netlink_ext_ack * extack)1922 static inline int br_mst_set_enabled(struct net_bridge *br, bool on,
1923 struct netlink_ext_ack *extack)
1924 {
1925 return -EOPNOTSUPP;
1926 }
1927
br_mst_info_size(const struct net_bridge_vlan_group * vg)1928 static inline size_t br_mst_info_size(const struct net_bridge_vlan_group *vg)
1929 {
1930 return 0;
1931 }
1932
br_mst_fill_info(struct sk_buff * skb,const struct net_bridge_vlan_group * vg)1933 static inline int br_mst_fill_info(struct sk_buff *skb,
1934 const struct net_bridge_vlan_group *vg)
1935 {
1936 return -EOPNOTSUPP;
1937 }
1938
br_mst_process(struct net_bridge_port * p,const struct nlattr * mst_attr,struct netlink_ext_ack * extack)1939 static inline int br_mst_process(struct net_bridge_port *p,
1940 const struct nlattr *mst_attr,
1941 struct netlink_ext_ack *extack)
1942 {
1943 return -EOPNOTSUPP;
1944 }
1945 #endif
1946
1947 struct nf_br_ops {
1948 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1949 };
1950 extern const struct nf_br_ops __rcu *nf_br_ops;
1951
1952 /* br_netfilter.c */
1953 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1954 int br_nf_core_init(void);
1955 void br_nf_core_fini(void);
1956 void br_netfilter_rtable_init(struct net_bridge *);
1957 #else
br_nf_core_init(void)1958 static inline int br_nf_core_init(void) { return 0; }
br_nf_core_fini(void)1959 static inline void br_nf_core_fini(void) {}
1960 #define br_netfilter_rtable_init(x)
1961 #endif
1962
1963 /* br_stp.c */
1964 void br_set_state(struct net_bridge_port *p, unsigned int state);
1965 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1966 void br_init_port(struct net_bridge_port *p);
1967 void br_become_designated_port(struct net_bridge_port *p);
1968
1969 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1970 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1971 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1972 int br_set_max_age(struct net_bridge *br, unsigned long x);
1973 int __set_ageing_time(struct net_device *dev, unsigned long t);
1974 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1975
1976
1977 /* br_stp_if.c */
1978 void br_stp_enable_bridge(struct net_bridge *br);
1979 void br_stp_disable_bridge(struct net_bridge *br);
1980 int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1981 struct netlink_ext_ack *extack);
1982 void br_stp_enable_port(struct net_bridge_port *p);
1983 void br_stp_disable_port(struct net_bridge_port *p);
1984 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1985 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1986 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1987 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1988 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1989 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1990
1991 /* br_stp_bpdu.c */
1992 struct stp_proto;
1993 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1994 struct net_device *dev);
1995
1996 /* br_stp_timer.c */
1997 void br_stp_timer_init(struct net_bridge *br);
1998 void br_stp_port_timer_init(struct net_bridge_port *p);
1999 unsigned long br_timer_value(const struct timer_list *timer);
2000
2001 /* br.c */
2002 #if IS_ENABLED(CONFIG_ATM_LANE)
2003 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
2004 #endif
2005
2006 /* br_mrp.c */
2007 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
2008 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
2009 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
2010 bool br_mrp_enabled(struct net_bridge *br);
2011 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
2012 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
2013 #else
br_mrp_parse(struct net_bridge * br,struct net_bridge_port * p,struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)2014 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
2015 struct nlattr *attr, int cmd,
2016 struct netlink_ext_ack *extack)
2017 {
2018 return -EOPNOTSUPP;
2019 }
2020
br_mrp_enabled(struct net_bridge * br)2021 static inline bool br_mrp_enabled(struct net_bridge *br)
2022 {
2023 return false;
2024 }
2025
br_mrp_port_del(struct net_bridge * br,struct net_bridge_port * p)2026 static inline void br_mrp_port_del(struct net_bridge *br,
2027 struct net_bridge_port *p)
2028 {
2029 }
2030
br_mrp_fill_info(struct sk_buff * skb,struct net_bridge * br)2031 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
2032 {
2033 return 0;
2034 }
2035
2036 #endif
2037
2038 /* br_cfm.c */
2039 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
2040 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
2041 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
2042 bool br_cfm_created(struct net_bridge *br);
2043 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
2044 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br);
2045 int br_cfm_status_fill_info(struct sk_buff *skb,
2046 struct net_bridge *br,
2047 bool getlink);
2048 int br_cfm_mep_count(struct net_bridge *br, u32 *count);
2049 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count);
2050 #else
br_cfm_parse(struct net_bridge * br,struct net_bridge_port * p,struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)2051 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
2052 struct nlattr *attr, int cmd,
2053 struct netlink_ext_ack *extack)
2054 {
2055 return -EOPNOTSUPP;
2056 }
2057
br_cfm_created(struct net_bridge * br)2058 static inline bool br_cfm_created(struct net_bridge *br)
2059 {
2060 return false;
2061 }
2062
br_cfm_port_del(struct net_bridge * br,struct net_bridge_port * p)2063 static inline void br_cfm_port_del(struct net_bridge *br,
2064 struct net_bridge_port *p)
2065 {
2066 }
2067
br_cfm_config_fill_info(struct sk_buff * skb,struct net_bridge * br)2068 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br)
2069 {
2070 return -EOPNOTSUPP;
2071 }
2072
br_cfm_status_fill_info(struct sk_buff * skb,struct net_bridge * br,bool getlink)2073 static inline int br_cfm_status_fill_info(struct sk_buff *skb,
2074 struct net_bridge *br,
2075 bool getlink)
2076 {
2077 return -EOPNOTSUPP;
2078 }
2079
br_cfm_mep_count(struct net_bridge * br,u32 * count)2080 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
2081 {
2082 *count = 0;
2083 return -EOPNOTSUPP;
2084 }
2085
br_cfm_peer_mep_count(struct net_bridge * br,u32 * count)2086 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
2087 {
2088 *count = 0;
2089 return -EOPNOTSUPP;
2090 }
2091 #endif
2092
2093 /* br_netlink.c */
2094 extern struct rtnl_link_ops br_link_ops;
2095 int br_netlink_init(void);
2096 void br_netlink_fini(void);
2097 void br_ifinfo_notify(int event, const struct net_bridge *br,
2098 const struct net_bridge_port *port);
2099 void br_info_notify(int event, const struct net_bridge *br,
2100 const struct net_bridge_port *port, u32 filter);
2101 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
2102 struct netlink_ext_ack *extack);
2103 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
2104 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
2105 u32 filter_mask, int nlflags);
2106 int br_process_vlan_info(struct net_bridge *br,
2107 struct net_bridge_port *p, int cmd,
2108 struct bridge_vlan_info *vinfo_curr,
2109 struct bridge_vlan_info **vinfo_last,
2110 bool *changed,
2111 struct netlink_ext_ack *extack);
2112
2113 #ifdef CONFIG_SYSFS
2114 /* br_sysfs_if.c */
2115 extern const struct sysfs_ops brport_sysfs_ops;
2116 int br_sysfs_addif(struct net_bridge_port *p);
2117 int br_sysfs_renameif(struct net_bridge_port *p);
2118
2119 /* br_sysfs_br.c */
2120 int br_sysfs_addbr(struct net_device *dev);
2121 void br_sysfs_delbr(struct net_device *dev);
2122
2123 #else
2124
br_sysfs_addif(struct net_bridge_port * p)2125 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
br_sysfs_renameif(struct net_bridge_port * p)2126 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
br_sysfs_addbr(struct net_device * dev)2127 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
br_sysfs_delbr(struct net_device * dev)2128 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
2129 #endif /* CONFIG_SYSFS */
2130
2131 /* br_switchdev.c */
2132 #ifdef CONFIG_NET_SWITCHDEV
2133 int br_switchdev_port_offload(struct net_bridge_port *p,
2134 struct net_device *dev, const void *ctx,
2135 struct notifier_block *atomic_nb,
2136 struct notifier_block *blocking_nb,
2137 bool tx_fwd_offload,
2138 struct netlink_ext_ack *extack);
2139
2140 void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
2141 struct notifier_block *atomic_nb,
2142 struct notifier_block *blocking_nb);
2143
2144 int br_switchdev_port_replay(struct net_bridge_port *p,
2145 struct net_device *dev, const void *ctx,
2146 struct notifier_block *atomic_nb,
2147 struct notifier_block *blocking_nb,
2148 struct netlink_ext_ack *extack);
2149
2150 bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb);
2151
2152 void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb);
2153
2154 void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
2155 struct sk_buff *skb);
2156 void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
2157 struct sk_buff *skb);
2158 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
2159 struct sk_buff *skb);
2160 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
2161 const struct sk_buff *skb);
2162 int br_switchdev_set_port_flag(struct net_bridge_port *p,
2163 unsigned long flags,
2164 unsigned long mask,
2165 struct netlink_ext_ack *extack);
2166 void br_switchdev_fdb_notify(struct net_bridge *br,
2167 const struct net_bridge_fdb_entry *fdb, int type);
2168 void br_switchdev_mdb_notify(struct net_device *dev,
2169 struct net_bridge_mdb_entry *mp,
2170 struct net_bridge_port_group *pg,
2171 int type);
2172 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
2173 bool changed, struct netlink_ext_ack *extack);
2174 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
2175 void br_switchdev_init(struct net_bridge *br);
2176
br_switchdev_frame_unmark(struct sk_buff * skb)2177 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
2178 {
2179 skb->offload_fwd_mark = 0;
2180 }
2181 #else
2182 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)2183 br_switchdev_port_offload(struct net_bridge_port *p,
2184 struct net_device *dev, const void *ctx,
2185 struct notifier_block *atomic_nb,
2186 struct notifier_block *blocking_nb,
2187 bool tx_fwd_offload,
2188 struct netlink_ext_ack *extack)
2189 {
2190 return -EOPNOTSUPP;
2191 }
2192
2193 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)2194 br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
2195 struct notifier_block *atomic_nb,
2196 struct notifier_block *blocking_nb)
2197 {
2198 }
2199
2200 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)2201 br_switchdev_port_replay(struct net_bridge_port *p,
2202 struct net_device *dev, const void *ctx,
2203 struct notifier_block *atomic_nb,
2204 struct notifier_block *blocking_nb,
2205 struct netlink_ext_ack *extack)
2206 {
2207 return -EOPNOTSUPP;
2208 }
2209
br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff * skb)2210 static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb)
2211 {
2212 return false;
2213 }
2214
br_switchdev_frame_set_offload_fwd_mark(struct sk_buff * skb)2215 static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb)
2216 {
2217 }
2218
2219 static inline void
nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port * p,struct sk_buff * skb)2220 nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
2221 struct sk_buff *skb)
2222 {
2223 }
2224
2225 static inline void
nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port * p,struct sk_buff * skb)2226 nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
2227 struct sk_buff *skb)
2228 {
2229 }
2230
nbp_switchdev_frame_mark(const struct net_bridge_port * p,struct sk_buff * skb)2231 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
2232 struct sk_buff *skb)
2233 {
2234 }
2235
nbp_switchdev_allowed_egress(const struct net_bridge_port * p,const struct sk_buff * skb)2236 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
2237 const struct sk_buff *skb)
2238 {
2239 return true;
2240 }
2241
br_switchdev_set_port_flag(struct net_bridge_port * p,unsigned long flags,unsigned long mask,struct netlink_ext_ack * extack)2242 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
2243 unsigned long flags,
2244 unsigned long mask,
2245 struct netlink_ext_ack *extack)
2246 {
2247 return 0;
2248 }
2249
br_switchdev_port_vlan_add(struct net_device * dev,u16 vid,u16 flags,bool changed,struct netlink_ext_ack * extack)2250 static inline int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid,
2251 u16 flags, bool changed,
2252 struct netlink_ext_ack *extack)
2253 {
2254 return -EOPNOTSUPP;
2255 }
2256
br_switchdev_port_vlan_del(struct net_device * dev,u16 vid)2257 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
2258 {
2259 return -EOPNOTSUPP;
2260 }
2261
2262 static inline void
br_switchdev_fdb_notify(struct net_bridge * br,const struct net_bridge_fdb_entry * fdb,int type)2263 br_switchdev_fdb_notify(struct net_bridge *br,
2264 const struct net_bridge_fdb_entry *fdb, int type)
2265 {
2266 }
2267
br_switchdev_mdb_notify(struct net_device * dev,struct net_bridge_mdb_entry * mp,struct net_bridge_port_group * pg,int type)2268 static inline void br_switchdev_mdb_notify(struct net_device *dev,
2269 struct net_bridge_mdb_entry *mp,
2270 struct net_bridge_port_group *pg,
2271 int type)
2272 {
2273 }
2274
br_switchdev_frame_unmark(struct sk_buff * skb)2275 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
2276 {
2277 }
2278
br_switchdev_init(struct net_bridge * br)2279 static inline void br_switchdev_init(struct net_bridge *br)
2280 {
2281 }
2282
2283 #endif /* CONFIG_NET_SWITCHDEV */
2284
2285 /* br_arp_nd_proxy.c */
2286 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
2287 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
2288 u16 vid, struct net_bridge_port *p);
2289 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
2290 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
2291 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
2292 bool br_is_neigh_suppress_enabled(const struct net_bridge_port *p, u16 vid);
2293 #endif
2294