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 u8 promisc:1;
593 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
594 u8 vlan_filtered:1;
595 #endif
596 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
597 u8 br_netfilter_broute:1;
598 #endif
599
600 #ifdef CONFIG_NET_SWITCHDEV
601 /* Set if TX data plane offloading is used towards at least one
602 * hardware domain.
603 */
604 u8 tx_fwd_offload:1;
605 /* The switchdev hardware domain from which this packet was received.
606 * If skb->offload_fwd_mark was set, then this packet was already
607 * forwarded by hardware to the other ports in the source hardware
608 * domain, otherwise it wasn't.
609 */
610 int src_hwdom;
611 /* Bit mask of hardware domains towards this packet has already been
612 * transmitted using the TX data plane offload.
613 */
614 unsigned long fwd_hwdoms;
615 #endif
616
617 u32 backup_nhid;
618 };
619
620 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
621
622 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
623 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
624 #else
625 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
626 #endif
627
628 #define br_printk(level, br, format, args...) \
629 printk(level "%s: " format, (br)->dev->name, ##args)
630
631 #define br_err(__br, format, args...) \
632 br_printk(KERN_ERR, __br, format, ##args)
633 #define br_warn(__br, format, args...) \
634 br_printk(KERN_WARNING, __br, format, ##args)
635 #define br_notice(__br, format, args...) \
636 br_printk(KERN_NOTICE, __br, format, ##args)
637 #define br_info(__br, format, args...) \
638 br_printk(KERN_INFO, __br, format, ##args)
639
640 #define br_debug(br, format, args...) \
641 pr_debug("%s: " format, (br)->dev->name, ##args)
642
643 /* called under bridge lock */
br_is_root_bridge(const struct net_bridge * br)644 static inline int br_is_root_bridge(const struct net_bridge *br)
645 {
646 return !memcmp(&br->bridge_id, &br->designated_root, 8);
647 }
648
649 /* check if a VLAN entry is global */
br_vlan_is_master(const struct net_bridge_vlan * v)650 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
651 {
652 return v->flags & BRIDGE_VLAN_INFO_MASTER;
653 }
654
655 /* check if a VLAN entry is used by the bridge */
br_vlan_is_brentry(const struct net_bridge_vlan * v)656 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
657 {
658 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
659 }
660
661 /* 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)662 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
663 {
664 if (br_vlan_is_master(v)) {
665 if (br_vlan_is_brentry(v))
666 return true;
667 else
668 return false;
669 }
670
671 return true;
672 }
673
nbp_state_should_learn(const struct net_bridge_port * p)674 static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
675 {
676 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
677 }
678
br_vlan_valid_id(u16 vid,struct netlink_ext_ack * extack)679 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack)
680 {
681 bool ret = vid > 0 && vid < VLAN_VID_MASK;
682
683 if (!ret)
684 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid");
685
686 return ret;
687 }
688
br_vlan_valid_range(const struct bridge_vlan_info * cur,const struct bridge_vlan_info * last,struct netlink_ext_ack * extack)689 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur,
690 const struct bridge_vlan_info *last,
691 struct netlink_ext_ack *extack)
692 {
693 /* pvid flag is not allowed in ranges */
694 if (cur->flags & BRIDGE_VLAN_INFO_PVID) {
695 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range");
696 return false;
697 }
698
699 /* when cur is the range end, check if:
700 * - it has range start flag
701 * - range ids are invalid (end is equal to or before start)
702 */
703 if (last) {
704 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
705 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one");
706 return false;
707 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) {
708 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing");
709 return false;
710 } else if (cur->vid <= last->vid) {
711 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
712 return false;
713 }
714 }
715
716 /* check for required range flags */
717 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
718 BRIDGE_VLAN_INFO_RANGE_END))) {
719 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing");
720 return false;
721 }
722
723 return true;
724 }
725
br_vlan_multicast_router(const struct net_bridge_vlan * v)726 static inline u8 br_vlan_multicast_router(const struct net_bridge_vlan *v)
727 {
728 u8 mcast_router = MDB_RTR_TYPE_DISABLED;
729
730 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
731 if (!br_vlan_is_master(v))
732 mcast_router = v->port_mcast_ctx.multicast_router;
733 else
734 mcast_router = v->br_mcast_ctx.multicast_router;
735 #endif
736
737 return mcast_router;
738 }
739
br_afspec_cmd_to_rtm(int cmd)740 static inline int br_afspec_cmd_to_rtm(int cmd)
741 {
742 switch (cmd) {
743 case RTM_SETLINK:
744 return RTM_NEWVLAN;
745 case RTM_DELLINK:
746 return RTM_DELVLAN;
747 }
748
749 return 0;
750 }
751
br_opt_get(const struct net_bridge * br,enum net_bridge_opts opt)752 static inline int br_opt_get(const struct net_bridge *br,
753 enum net_bridge_opts opt)
754 {
755 return test_bit(opt, &br->options);
756 }
757
758 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
759 struct netlink_ext_ack *extack);
760 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
761 int br_boolopt_multi_toggle(struct net_bridge *br,
762 struct br_boolopt_multi *bm,
763 struct netlink_ext_ack *extack);
764 void br_boolopt_multi_get(const struct net_bridge *br,
765 struct br_boolopt_multi *bm);
766 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
767
768 #if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
br_tc_skb_miss_set(struct sk_buff * skb,bool miss)769 static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
770 {
771 struct tc_skb_ext *ext;
772
773 if (!tc_skb_ext_tc_enabled())
774 return;
775
776 ext = skb_ext_find(skb, TC_SKB_EXT);
777 if (ext) {
778 ext->l2_miss = miss;
779 return;
780 }
781 if (!miss)
782 return;
783 ext = tc_skb_ext_alloc(skb);
784 if (!ext)
785 return;
786 ext->l2_miss = true;
787 }
788 #else
br_tc_skb_miss_set(struct sk_buff * skb,bool miss)789 static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
790 {
791 }
792 #endif
793
794 /* br_device.c */
795 void br_dev_setup(struct net_device *dev);
796 void br_dev_delete(struct net_device *dev, struct list_head *list);
797 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
798 #ifdef CONFIG_NET_POLL_CONTROLLER
br_netpoll_send_skb(const struct net_bridge_port * p,struct sk_buff * skb)799 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
800 struct sk_buff *skb)
801 {
802 netpoll_send_skb(p->np, skb);
803 }
804
805 int br_netpoll_enable(struct net_bridge_port *p);
806 void br_netpoll_disable(struct net_bridge_port *p);
807 #else
br_netpoll_send_skb(const struct net_bridge_port * p,struct sk_buff * skb)808 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
809 struct sk_buff *skb)
810 {
811 }
812
br_netpoll_enable(struct net_bridge_port * p)813 static inline int br_netpoll_enable(struct net_bridge_port *p)
814 {
815 return 0;
816 }
817
br_netpoll_disable(struct net_bridge_port * p)818 static inline void br_netpoll_disable(struct net_bridge_port *p)
819 {
820 }
821 #endif
822
823 /* br_fdb.c */
824 #define FDB_FLUSH_IGNORED_NDM_FLAGS (NTF_MASTER | NTF_SELF)
825 #define FDB_FLUSH_ALLOWED_NDM_STATES (NUD_PERMANENT | NUD_NOARP)
826 #define FDB_FLUSH_ALLOWED_NDM_FLAGS (NTF_USE | NTF_EXT_LEARNED | \
827 NTF_STICKY | NTF_OFFLOADED)
828
829 int br_fdb_init(void);
830 void br_fdb_fini(void);
831 int br_fdb_hash_init(struct net_bridge *br);
832 void br_fdb_hash_fini(struct net_bridge *br);
833 void br_fdb_flush(struct net_bridge *br,
834 const struct net_bridge_fdb_flush_desc *desc);
835 void br_fdb_find_delete_local(struct net_bridge *br,
836 const struct net_bridge_port *p,
837 const unsigned char *addr, u16 vid);
838 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
839 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
840 void br_fdb_cleanup(struct work_struct *work);
841 void br_fdb_delete_by_port(struct net_bridge *br,
842 const struct net_bridge_port *p, u16 vid, int do_all);
843 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
844 const unsigned char *addr,
845 __u16 vid);
846 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
847 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
848 unsigned long off);
849 int br_fdb_add_local(struct net_bridge *br, struct net_bridge_port *source,
850 const unsigned char *addr, u16 vid);
851 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
852 const unsigned char *addr, u16 vid, unsigned long flags);
853
854 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
855 struct net_device *dev, const unsigned char *addr, u16 vid,
856 bool *notified, struct netlink_ext_ack *extack);
857 int br_fdb_delete_bulk(struct nlmsghdr *nlh, struct net_device *dev,
858 struct netlink_ext_ack *extack);
859 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
860 const unsigned char *addr, u16 vid, u16 nlh_flags,
861 bool *notified, struct netlink_ext_ack *extack);
862 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
863 struct net_device *dev, struct net_device *fdev, int *idx);
864 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
865 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
866 struct netlink_ext_ack *extack);
867 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
868 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
869 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
870 const unsigned char *addr, u16 vid,
871 bool locked, bool swdev_notify);
872 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
873 const unsigned char *addr, u16 vid,
874 bool swdev_notify);
875 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
876 const unsigned char *addr, u16 vid, bool offloaded);
877
878 /* br_forward.c */
879 enum br_pkt_type {
880 BR_PKT_UNICAST,
881 BR_PKT_MULTICAST,
882 BR_PKT_BROADCAST
883 };
884 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
885 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
886 bool local_rcv, bool local_orig);
887 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
888 void br_flood(struct net_bridge *br, struct sk_buff *skb,
889 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig,
890 u16 vid);
891
892 /* 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)893 static inline bool br_skb_isolated(const struct net_bridge_port *to,
894 const struct sk_buff *skb)
895 {
896 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
897 (to->flags & BR_ISOLATED);
898 }
899
900 /* br_if.c */
901 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
902 int br_add_bridge(struct net *net, const char *name);
903 int br_del_bridge(struct net *net, const char *name);
904 int br_add_if(struct net_bridge *br, struct net_device *dev,
905 struct netlink_ext_ack *extack);
906 int br_del_if(struct net_bridge *br, struct net_device *dev);
907 void br_mtu_auto_adjust(struct net_bridge *br);
908 netdev_features_t br_features_recompute(struct net_bridge *br,
909 netdev_features_t features);
910 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
911 void br_manage_promisc(struct net_bridge *br);
912 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
913
914 /* br_input.c */
915 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
916 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev);
917
918 struct br_frame_type {
919 __be16 type;
920 int (*frame_handler)(struct net_bridge_port *port,
921 struct sk_buff *skb);
922 struct hlist_node list;
923 };
924
925 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft);
926 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft);
927
br_rx_handler_check_rcu(const struct net_device * dev)928 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
929 {
930 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev);
931 }
932
br_rx_handler_check_rtnl(const struct net_device * dev)933 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
934 {
935 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev);
936 }
937
br_port_get_check_rcu(const struct net_device * dev)938 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
939 {
940 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
941 }
942
943 static inline struct net_bridge_port *
br_port_get_check_rtnl(const struct net_device * dev)944 br_port_get_check_rtnl(const struct net_device *dev)
945 {
946 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
947 }
948
949 /* br_ioctl.c */
950 int br_dev_siocdevprivate(struct net_device *dev, struct ifreq *rq,
951 void __user *data, int cmd);
952 int br_ioctl_stub(struct net *net, struct net_bridge *br, unsigned int cmd,
953 struct ifreq *ifr, void __user *uarg);
954
955 /* br_multicast.c */
956 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
957 int br_multicast_rcv(struct net_bridge_mcast **brmctx,
958 struct net_bridge_mcast_port **pmctx,
959 struct net_bridge_vlan *vlan,
960 struct sk_buff *skb, u16 vid);
961 struct net_bridge_mdb_entry *
962 br_mdb_entry_skb_get(struct net_bridge_mcast *brmctx, struct sk_buff *skb,
963 u16 vid);
964 int br_multicast_add_port(struct net_bridge_port *port);
965 void br_multicast_del_port(struct net_bridge_port *port);
966 void br_multicast_enable_port(struct net_bridge_port *port);
967 void br_multicast_disable_port(struct net_bridge_port *port);
968 void br_multicast_init(struct net_bridge *br);
969 void br_multicast_join_snoopers(struct net_bridge *br);
970 void br_multicast_leave_snoopers(struct net_bridge *br);
971 void br_multicast_open(struct net_bridge *br);
972 void br_multicast_stop(struct net_bridge *br);
973 void br_multicast_dev_del(struct net_bridge *br);
974 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb,
975 struct net_bridge_mcast *brmctx,
976 bool local_rcv, bool local_orig);
977 int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val);
978 int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx,
979 unsigned long val);
980 int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router);
981 int br_multicast_toggle(struct net_bridge *br, unsigned long val,
982 struct netlink_ext_ack *extack);
983 int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val);
984 int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx,
985 unsigned long val);
986 #if IS_ENABLED(CONFIG_IPV6)
987 int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx,
988 unsigned long val);
989 #endif
990 struct net_bridge_mdb_entry *
991 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
992 struct net_bridge_mdb_entry *
993 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
994 struct net_bridge_port_group *
995 br_multicast_new_port_group(struct net_bridge_port *port,
996 const struct br_ip *group,
997 struct net_bridge_port_group __rcu *next,
998 unsigned char flags, const unsigned char *src,
999 u8 filter_mode, u8 rt_protocol,
1000 struct netlink_ext_ack *extack);
1001 void br_multicast_del_port_group(struct net_bridge_port_group *p);
1002 int br_mdb_hash_init(struct net_bridge *br);
1003 void br_mdb_hash_fini(struct net_bridge *br);
1004 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
1005 struct net_bridge_port_group *pg, int type);
1006 void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx,
1007 int type);
1008 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
1009 struct net_bridge_port_group *pg,
1010 struct net_bridge_port_group __rcu **pp);
1011 void br_multicast_count(struct net_bridge *br,
1012 const struct net_bridge_port *p,
1013 const struct sk_buff *skb, u8 type, u8 dir);
1014 int br_multicast_init_stats(struct net_bridge *br);
1015 void br_multicast_uninit_stats(struct net_bridge *br);
1016 void br_multicast_get_stats(const struct net_bridge *br,
1017 const struct net_bridge_port *p,
1018 struct br_mcast_stats *dest);
1019 u32 br_multicast_ngroups_get(const struct net_bridge_mcast_port *pmctx);
1020 void br_multicast_ngroups_set_max(struct net_bridge_mcast_port *pmctx, u32 max);
1021 u32 br_multicast_ngroups_get_max(const struct net_bridge_mcast_port *pmctx);
1022 int br_mdb_add(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
1023 struct netlink_ext_ack *extack);
1024 int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
1025 struct netlink_ext_ack *extack);
1026 int br_mdb_del_bulk(struct net_device *dev, struct nlattr *tb[],
1027 struct netlink_ext_ack *extack);
1028 int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
1029 struct netlink_callback *cb);
1030 int br_mdb_get(struct net_device *dev, struct nlattr *tb[], u32 portid, u32 seq,
1031 struct netlink_ext_ack *extack);
1032 void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
1033 struct net_bridge_mdb_entry *mp, bool notify);
1034 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
1035 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
1036 u8 filter_mode);
1037 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
1038 struct net_bridge_port_group *sg);
1039 struct net_bridge_group_src *
1040 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip);
1041 struct net_bridge_group_src *
1042 br_multicast_new_group_src(struct net_bridge_port_group *pg,
1043 struct br_ip *src_ip);
1044 void __br_multicast_del_group_src(struct net_bridge_group_src *src);
1045 void br_multicast_del_group_src(struct net_bridge_group_src *src,
1046 bool fastleave);
1047 void br_multicast_ctx_init(struct net_bridge *br,
1048 struct net_bridge_vlan *vlan,
1049 struct net_bridge_mcast *brmctx);
1050 void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx);
1051 void br_multicast_port_ctx_init(struct net_bridge_port *port,
1052 struct net_bridge_vlan *vlan,
1053 struct net_bridge_mcast_port *pmctx);
1054 void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx);
1055 void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on);
1056 int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on,
1057 struct netlink_ext_ack *extack);
1058 bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on);
1059
1060 int br_rports_fill_info(struct sk_buff *skb,
1061 const struct net_bridge_mcast *brmctx);
1062 int br_multicast_dump_querier_state(struct sk_buff *skb,
1063 const struct net_bridge_mcast *brmctx,
1064 int nest_attr);
1065 size_t br_multicast_querier_state_size(void);
1066 size_t br_rports_size(const struct net_bridge_mcast *brmctx);
1067 void br_multicast_set_query_intvl(struct net_bridge_mcast *brmctx,
1068 unsigned long val);
1069 void br_multicast_set_startup_query_intvl(struct net_bridge_mcast *brmctx,
1070 unsigned long val);
1071
br_group_is_l2(const struct br_ip * group)1072 static inline bool br_group_is_l2(const struct br_ip *group)
1073 {
1074 return group->proto == 0;
1075 }
1076
1077 #define mlock_dereference(X, br) \
1078 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
1079
1080 static inline struct hlist_node *
br_multicast_get_first_rport_node(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1081 br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx,
1082 struct sk_buff *skb)
1083 {
1084 #if IS_ENABLED(CONFIG_IPV6)
1085 if (skb->protocol == htons(ETH_P_IPV6))
1086 return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list));
1087 #endif
1088 return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list));
1089 }
1090
1091 static inline struct net_bridge_port *
br_multicast_rport_from_node_skb(struct hlist_node * rp,struct sk_buff * skb)1092 br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb)
1093 {
1094 struct net_bridge_mcast_port *mctx;
1095
1096 #if IS_ENABLED(CONFIG_IPV6)
1097 if (skb->protocol == htons(ETH_P_IPV6))
1098 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
1099 ip6_rlist);
1100 else
1101 #endif
1102 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
1103 ip4_rlist);
1104
1105 if (mctx)
1106 return mctx->port;
1107 else
1108 return NULL;
1109 }
1110
br_ip4_multicast_is_router(struct net_bridge_mcast * brmctx)1111 static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx)
1112 {
1113 return timer_pending(&brmctx->ip4_mc_router_timer);
1114 }
1115
br_ip6_multicast_is_router(struct net_bridge_mcast * brmctx)1116 static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx)
1117 {
1118 #if IS_ENABLED(CONFIG_IPV6)
1119 return timer_pending(&brmctx->ip6_mc_router_timer);
1120 #else
1121 return false;
1122 #endif
1123 }
1124
1125 static inline bool
br_multicast_is_router(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1126 br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb)
1127 {
1128 switch (brmctx->multicast_router) {
1129 case MDB_RTR_TYPE_PERM:
1130 return true;
1131 case MDB_RTR_TYPE_TEMP_QUERY:
1132 if (skb) {
1133 if (skb->protocol == htons(ETH_P_IP))
1134 return br_ip4_multicast_is_router(brmctx);
1135 else if (skb->protocol == htons(ETH_P_IPV6))
1136 return br_ip6_multicast_is_router(brmctx);
1137 } else {
1138 return br_ip4_multicast_is_router(brmctx) ||
1139 br_ip6_multicast_is_router(brmctx);
1140 }
1141 fallthrough;
1142 default:
1143 return false;
1144 }
1145 }
1146
1147 static inline bool
__br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct bridge_mcast_other_query * querier,const bool is_ipv6)1148 __br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1149 struct bridge_mcast_other_query *querier,
1150 const bool is_ipv6)
1151 {
1152 bool own_querier_enabled;
1153
1154 if (brmctx->multicast_querier) {
1155 if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR))
1156 own_querier_enabled = false;
1157 else
1158 own_querier_enabled = true;
1159 } else {
1160 own_querier_enabled = false;
1161 }
1162
1163 return !timer_pending(&querier->delay_timer) &&
1164 (own_querier_enabled || timer_pending(&querier->timer));
1165 }
1166
br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct ethhdr * eth,const struct net_bridge_mdb_entry * mdb)1167 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1168 struct ethhdr *eth,
1169 const struct net_bridge_mdb_entry *mdb)
1170 {
1171 switch (eth->h_proto) {
1172 case (htons(ETH_P_IP)):
1173 return __br_multicast_querier_exists(brmctx,
1174 &brmctx->ip4_other_query, false);
1175 #if IS_ENABLED(CONFIG_IPV6)
1176 case (htons(ETH_P_IPV6)):
1177 return __br_multicast_querier_exists(brmctx,
1178 &brmctx->ip6_other_query, true);
1179 #endif
1180 default:
1181 return !!mdb && br_group_is_l2(&mdb->addr);
1182 }
1183 }
1184
br_multicast_is_star_g(const struct br_ip * ip)1185 static inline bool br_multicast_is_star_g(const struct br_ip *ip)
1186 {
1187 switch (ip->proto) {
1188 case htons(ETH_P_IP):
1189 return ipv4_is_zeronet(ip->src.ip4);
1190 #if IS_ENABLED(CONFIG_IPV6)
1191 case htons(ETH_P_IPV6):
1192 return ipv6_addr_any(&ip->src.ip6);
1193 #endif
1194 default:
1195 return false;
1196 }
1197 }
1198
1199 static inline bool
br_multicast_should_handle_mode(const struct net_bridge_mcast * brmctx,__be16 proto)1200 br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx,
1201 __be16 proto)
1202 {
1203 switch (proto) {
1204 case htons(ETH_P_IP):
1205 return !!(brmctx->multicast_igmp_version == 3);
1206 #if IS_ENABLED(CONFIG_IPV6)
1207 case htons(ETH_P_IPV6):
1208 return !!(brmctx->multicast_mld_version == 2);
1209 #endif
1210 default:
1211 return false;
1212 }
1213 }
1214
br_multicast_igmp_type(const struct sk_buff * skb)1215 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1216 {
1217 return BR_INPUT_SKB_CB(skb)->igmp;
1218 }
1219
br_multicast_lmqt(const struct net_bridge_mcast * brmctx)1220 static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx)
1221 {
1222 return brmctx->multicast_last_member_interval *
1223 brmctx->multicast_last_member_count;
1224 }
1225
br_multicast_gmi(const struct net_bridge_mcast * brmctx)1226 static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx)
1227 {
1228 return brmctx->multicast_membership_interval;
1229 }
1230
1231 static inline bool
br_multicast_ctx_is_vlan(const struct net_bridge_mcast * brmctx)1232 br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx)
1233 {
1234 return !!brmctx->vlan;
1235 }
1236
1237 static inline bool
br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port * pmctx)1238 br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx)
1239 {
1240 return !!pmctx->vlan;
1241 }
1242
1243 static inline struct net_bridge_mcast *
br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port * pmctx)1244 br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx)
1245 {
1246 if (!br_multicast_port_ctx_is_vlan(pmctx))
1247 return &pmctx->port->br->multicast_ctx;
1248 else
1249 return &pmctx->vlan->brvlan->br_mcast_ctx;
1250 }
1251
1252 static inline bool
br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast * brmctx)1253 br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx)
1254 {
1255 return br_multicast_ctx_is_vlan(brmctx) &&
1256 (!br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) ||
1257 !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED));
1258 }
1259
1260 static inline bool
br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast * brmctx)1261 br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx)
1262 {
1263 return br_multicast_ctx_is_vlan(brmctx) &&
1264 !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
1265 }
1266
1267 static inline bool
br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port * pmctx)1268 br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx)
1269 {
1270 return br_multicast_port_ctx_is_vlan(pmctx) &&
1271 !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
1272 }
1273
1274 static inline bool
br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port * pmctx)1275 br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx)
1276 {
1277 return pmctx->port->state == BR_STATE_DISABLED ||
1278 (br_multicast_port_ctx_is_vlan(pmctx) &&
1279 (br_multicast_port_ctx_vlan_disabled(pmctx) ||
1280 pmctx->vlan->state == BR_STATE_DISABLED));
1281 }
1282
1283 static inline bool
br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port * pmctx)1284 br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx)
1285 {
1286 return br_multicast_port_ctx_state_disabled(pmctx) ||
1287 pmctx->port->state == BR_STATE_BLOCKING ||
1288 (br_multicast_port_ctx_is_vlan(pmctx) &&
1289 pmctx->vlan->state == BR_STATE_BLOCKING);
1290 }
1291
1292 static inline bool
br_rports_have_mc_router(const struct net_bridge_mcast * brmctx)1293 br_rports_have_mc_router(const struct net_bridge_mcast *brmctx)
1294 {
1295 #if IS_ENABLED(CONFIG_IPV6)
1296 return !hlist_empty(&brmctx->ip4_mc_router_list) ||
1297 !hlist_empty(&brmctx->ip6_mc_router_list);
1298 #else
1299 return !hlist_empty(&brmctx->ip4_mc_router_list);
1300 #endif
1301 }
1302
1303 static inline bool
br_multicast_ctx_options_equal(const struct net_bridge_mcast * brmctx1,const struct net_bridge_mcast * brmctx2)1304 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
1305 const struct net_bridge_mcast *brmctx2)
1306 {
1307 return brmctx1->multicast_igmp_version ==
1308 brmctx2->multicast_igmp_version &&
1309 brmctx1->multicast_last_member_count ==
1310 brmctx2->multicast_last_member_count &&
1311 brmctx1->multicast_startup_query_count ==
1312 brmctx2->multicast_startup_query_count &&
1313 brmctx1->multicast_last_member_interval ==
1314 brmctx2->multicast_last_member_interval &&
1315 brmctx1->multicast_membership_interval ==
1316 brmctx2->multicast_membership_interval &&
1317 brmctx1->multicast_querier_interval ==
1318 brmctx2->multicast_querier_interval &&
1319 brmctx1->multicast_query_interval ==
1320 brmctx2->multicast_query_interval &&
1321 brmctx1->multicast_query_response_interval ==
1322 brmctx2->multicast_query_response_interval &&
1323 brmctx1->multicast_startup_query_interval ==
1324 brmctx2->multicast_startup_query_interval &&
1325 brmctx1->multicast_querier == brmctx2->multicast_querier &&
1326 brmctx1->multicast_router == brmctx2->multicast_router &&
1327 !br_rports_have_mc_router(brmctx1) &&
1328 !br_rports_have_mc_router(brmctx2) &&
1329 #if IS_ENABLED(CONFIG_IPV6)
1330 brmctx1->multicast_mld_version ==
1331 brmctx2->multicast_mld_version &&
1332 #endif
1333 true;
1334 }
1335
1336 static inline bool
br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast * brmctx)1337 br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast *brmctx)
1338 {
1339 bool vlan_snooping_enabled;
1340
1341 vlan_snooping_enabled = !!br_opt_get(brmctx->br,
1342 BROPT_MCAST_VLAN_SNOOPING_ENABLED);
1343
1344 return !!(vlan_snooping_enabled == br_multicast_ctx_is_vlan(brmctx));
1345 }
1346 #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)1347 static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx,
1348 struct net_bridge_mcast_port **pmctx,
1349 struct net_bridge_vlan *vlan,
1350 struct sk_buff *skb,
1351 u16 vid)
1352 {
1353 return 0;
1354 }
1355
1356 static inline struct net_bridge_mdb_entry *
br_mdb_entry_skb_get(struct net_bridge_mcast * brmctx,struct sk_buff * skb,u16 vid)1357 br_mdb_entry_skb_get(struct net_bridge_mcast *brmctx, struct sk_buff *skb,
1358 u16 vid)
1359 {
1360 return NULL;
1361 }
1362
br_multicast_add_port(struct net_bridge_port * port)1363 static inline int br_multicast_add_port(struct net_bridge_port *port)
1364 {
1365 return 0;
1366 }
1367
br_multicast_del_port(struct net_bridge_port * port)1368 static inline void br_multicast_del_port(struct net_bridge_port *port)
1369 {
1370 }
1371
br_multicast_enable_port(struct net_bridge_port * port)1372 static inline void br_multicast_enable_port(struct net_bridge_port *port)
1373 {
1374 }
1375
br_multicast_disable_port(struct net_bridge_port * port)1376 static inline void br_multicast_disable_port(struct net_bridge_port *port)
1377 {
1378 }
1379
br_multicast_init(struct net_bridge * br)1380 static inline void br_multicast_init(struct net_bridge *br)
1381 {
1382 }
1383
br_multicast_join_snoopers(struct net_bridge * br)1384 static inline void br_multicast_join_snoopers(struct net_bridge *br)
1385 {
1386 }
1387
br_multicast_leave_snoopers(struct net_bridge * br)1388 static inline void br_multicast_leave_snoopers(struct net_bridge *br)
1389 {
1390 }
1391
br_multicast_open(struct net_bridge * br)1392 static inline void br_multicast_open(struct net_bridge *br)
1393 {
1394 }
1395
br_multicast_stop(struct net_bridge * br)1396 static inline void br_multicast_stop(struct net_bridge *br)
1397 {
1398 }
1399
br_multicast_dev_del(struct net_bridge * br)1400 static inline void br_multicast_dev_del(struct net_bridge *br)
1401 {
1402 }
1403
br_multicast_flood(struct net_bridge_mdb_entry * mdst,struct sk_buff * skb,struct net_bridge_mcast * brmctx,bool local_rcv,bool local_orig)1404 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1405 struct sk_buff *skb,
1406 struct net_bridge_mcast *brmctx,
1407 bool local_rcv, bool local_orig)
1408 {
1409 }
1410
br_multicast_is_router(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1411 static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx,
1412 struct sk_buff *skb)
1413 {
1414 return false;
1415 }
1416
br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct ethhdr * eth,const struct net_bridge_mdb_entry * mdb)1417 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1418 struct ethhdr *eth,
1419 const struct net_bridge_mdb_entry *mdb)
1420 {
1421 return false;
1422 }
1423
br_mdb_add(struct net_device * dev,struct nlattr * tb[],u16 nlmsg_flags,struct netlink_ext_ack * extack)1424 static inline int br_mdb_add(struct net_device *dev, struct nlattr *tb[],
1425 u16 nlmsg_flags, struct netlink_ext_ack *extack)
1426 {
1427 return -EOPNOTSUPP;
1428 }
1429
br_mdb_del(struct net_device * dev,struct nlattr * tb[],struct netlink_ext_ack * extack)1430 static inline int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
1431 struct netlink_ext_ack *extack)
1432 {
1433 return -EOPNOTSUPP;
1434 }
1435
br_mdb_del_bulk(struct net_device * dev,struct nlattr * tb[],struct netlink_ext_ack * extack)1436 static inline int br_mdb_del_bulk(struct net_device *dev, struct nlattr *tb[],
1437 struct netlink_ext_ack *extack)
1438 {
1439 return -EOPNOTSUPP;
1440 }
1441
br_mdb_dump(struct net_device * dev,struct sk_buff * skb,struct netlink_callback * cb)1442 static inline int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
1443 struct netlink_callback *cb)
1444 {
1445 return 0;
1446 }
1447
br_mdb_get(struct net_device * dev,struct nlattr * tb[],u32 portid,u32 seq,struct netlink_ext_ack * extack)1448 static inline int br_mdb_get(struct net_device *dev, struct nlattr *tb[],
1449 u32 portid, u32 seq,
1450 struct netlink_ext_ack *extack)
1451 {
1452 return -EOPNOTSUPP;
1453 }
1454
br_mdb_hash_init(struct net_bridge * br)1455 static inline int br_mdb_hash_init(struct net_bridge *br)
1456 {
1457 return 0;
1458 }
1459
br_mdb_hash_fini(struct net_bridge * br)1460 static inline void br_mdb_hash_fini(struct net_bridge *br)
1461 {
1462 }
1463
br_multicast_count(struct net_bridge * br,const struct net_bridge_port * p,const struct sk_buff * skb,u8 type,u8 dir)1464 static inline void br_multicast_count(struct net_bridge *br,
1465 const struct net_bridge_port *p,
1466 const struct sk_buff *skb,
1467 u8 type, u8 dir)
1468 {
1469 }
1470
br_multicast_init_stats(struct net_bridge * br)1471 static inline int br_multicast_init_stats(struct net_bridge *br)
1472 {
1473 return 0;
1474 }
1475
br_multicast_uninit_stats(struct net_bridge * br)1476 static inline void br_multicast_uninit_stats(struct net_bridge *br)
1477 {
1478 }
1479
br_multicast_igmp_type(const struct sk_buff * skb)1480 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1481 {
1482 return 0;
1483 }
1484
br_multicast_ctx_init(struct net_bridge * br,struct net_bridge_vlan * vlan,struct net_bridge_mcast * brmctx)1485 static inline void br_multicast_ctx_init(struct net_bridge *br,
1486 struct net_bridge_vlan *vlan,
1487 struct net_bridge_mcast *brmctx)
1488 {
1489 }
1490
br_multicast_ctx_deinit(struct net_bridge_mcast * brmctx)1491 static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx)
1492 {
1493 }
1494
br_multicast_port_ctx_init(struct net_bridge_port * port,struct net_bridge_vlan * vlan,struct net_bridge_mcast_port * pmctx)1495 static inline void br_multicast_port_ctx_init(struct net_bridge_port *port,
1496 struct net_bridge_vlan *vlan,
1497 struct net_bridge_mcast_port *pmctx)
1498 {
1499 }
1500
br_multicast_port_ctx_deinit(struct net_bridge_mcast_port * pmctx)1501 static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx)
1502 {
1503 }
1504
br_multicast_toggle_one_vlan(struct net_bridge_vlan * vlan,bool on)1505 static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan,
1506 bool on)
1507 {
1508 }
1509
br_multicast_toggle_vlan_snooping(struct net_bridge * br,bool on,struct netlink_ext_ack * extack)1510 static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br,
1511 bool on,
1512 struct netlink_ext_ack *extack)
1513 {
1514 return -EOPNOTSUPP;
1515 }
1516
br_multicast_toggle_global_vlan(struct net_bridge_vlan * vlan,bool on)1517 static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan,
1518 bool on)
1519 {
1520 return false;
1521 }
1522
1523 static inline bool
br_multicast_ctx_options_equal(const struct net_bridge_mcast * brmctx1,const struct net_bridge_mcast * brmctx2)1524 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
1525 const struct net_bridge_mcast *brmctx2)
1526 {
1527 return true;
1528 }
1529 #endif
1530
1531 /* br_vlan.c */
1532 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1533 bool br_allowed_ingress(const struct net_bridge *br,
1534 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1535 u16 *vid, u8 *state,
1536 struct net_bridge_vlan **vlan);
1537 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1538 const struct sk_buff *skb);
1539 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1540 struct sk_buff *br_handle_vlan(struct net_bridge *br,
1541 const struct net_bridge_port *port,
1542 struct net_bridge_vlan_group *vg,
1543 struct sk_buff *skb);
1544 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1545 bool *changed, struct netlink_ext_ack *extack);
1546 int br_vlan_delete(struct net_bridge *br, u16 vid);
1547 void br_vlan_flush(struct net_bridge *br);
1548 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1549 void br_recalculate_fwd_mask(struct net_bridge *br);
1550 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val,
1551 struct netlink_ext_ack *extack);
1552 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto,
1553 struct netlink_ext_ack *extack);
1554 int br_vlan_set_proto(struct net_bridge *br, unsigned long val,
1555 struct netlink_ext_ack *extack);
1556 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1557 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1558 int br_vlan_init(struct net_bridge *br);
1559 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val,
1560 struct netlink_ext_ack *extack);
1561 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1562 struct netlink_ext_ack *extack);
1563 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1564 bool *changed, struct netlink_ext_ack *extack);
1565 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1566 void nbp_vlan_flush(struct net_bridge_port *port);
1567 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1568 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1569 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1570 struct pcpu_sw_netstats *stats);
1571 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1572 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1573 void *ptr);
1574 int br_vlan_rtnl_init(void);
1575 void br_vlan_rtnl_uninit(void);
1576 void br_vlan_notify(const struct net_bridge *br,
1577 const struct net_bridge_port *p,
1578 u16 vid, u16 vid_range,
1579 int cmd);
1580 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1581 const struct net_bridge_vlan *range_end);
1582
1583 void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1584 struct net_device_path_ctx *ctx,
1585 struct net_device_path *path);
1586 int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1587 struct net_bridge_port *dst,
1588 struct net_device_path *path);
1589
br_vlan_group(const struct net_bridge * br)1590 static inline struct net_bridge_vlan_group *br_vlan_group(
1591 const struct net_bridge *br)
1592 {
1593 return rtnl_dereference(br->vlgrp);
1594 }
1595
nbp_vlan_group(const struct net_bridge_port * p)1596 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1597 const struct net_bridge_port *p)
1598 {
1599 return rtnl_dereference(p->vlgrp);
1600 }
1601
br_vlan_group_rcu(const struct net_bridge * br)1602 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1603 const struct net_bridge *br)
1604 {
1605 return rcu_dereference(br->vlgrp);
1606 }
1607
nbp_vlan_group_rcu(const struct net_bridge_port * p)1608 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1609 const struct net_bridge_port *p)
1610 {
1611 return rcu_dereference(p->vlgrp);
1612 }
1613
1614 /* Since bridge now depends on 8021Q module, but the time bridge sees the
1615 * skb, the vlan tag will always be present if the frame was tagged.
1616 */
br_vlan_get_tag(const struct sk_buff * skb,u16 * vid)1617 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1618 {
1619 int err = 0;
1620
1621 if (skb_vlan_tag_present(skb)) {
1622 *vid = skb_vlan_tag_get_id(skb);
1623 } else {
1624 *vid = 0;
1625 err = -EINVAL;
1626 }
1627
1628 return err;
1629 }
1630
br_get_pvid(const struct net_bridge_vlan_group * vg)1631 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1632 {
1633 if (!vg)
1634 return 0;
1635
1636 smp_rmb();
1637 return vg->pvid;
1638 }
1639
br_vlan_flags(const struct net_bridge_vlan * v,u16 pvid)1640 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1641 {
1642 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1643 }
1644 #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)1645 static inline bool br_allowed_ingress(const struct net_bridge *br,
1646 struct net_bridge_vlan_group *vg,
1647 struct sk_buff *skb,
1648 u16 *vid, u8 *state,
1649 struct net_bridge_vlan **vlan)
1650
1651 {
1652 *vlan = NULL;
1653 return true;
1654 }
1655
br_allowed_egress(struct net_bridge_vlan_group * vg,const struct sk_buff * skb)1656 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1657 const struct sk_buff *skb)
1658 {
1659 return true;
1660 }
1661
br_should_learn(struct net_bridge_port * p,struct sk_buff * skb,u16 * vid)1662 static inline bool br_should_learn(struct net_bridge_port *p,
1663 struct sk_buff *skb, u16 *vid)
1664 {
1665 return true;
1666 }
1667
br_handle_vlan(struct net_bridge * br,const struct net_bridge_port * port,struct net_bridge_vlan_group * vg,struct sk_buff * skb)1668 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1669 const struct net_bridge_port *port,
1670 struct net_bridge_vlan_group *vg,
1671 struct sk_buff *skb)
1672 {
1673 return skb;
1674 }
1675
br_vlan_add(struct net_bridge * br,u16 vid,u16 flags,bool * changed,struct netlink_ext_ack * extack)1676 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1677 bool *changed, struct netlink_ext_ack *extack)
1678 {
1679 *changed = false;
1680 return -EOPNOTSUPP;
1681 }
1682
br_vlan_delete(struct net_bridge * br,u16 vid)1683 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1684 {
1685 return -EOPNOTSUPP;
1686 }
1687
br_vlan_flush(struct net_bridge * br)1688 static inline void br_vlan_flush(struct net_bridge *br)
1689 {
1690 }
1691
br_recalculate_fwd_mask(struct net_bridge * br)1692 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1693 {
1694 }
1695
br_vlan_init(struct net_bridge * br)1696 static inline int br_vlan_init(struct net_bridge *br)
1697 {
1698 return 0;
1699 }
1700
nbp_vlan_add(struct net_bridge_port * port,u16 vid,u16 flags,bool * changed,struct netlink_ext_ack * extack)1701 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1702 bool *changed, struct netlink_ext_ack *extack)
1703 {
1704 *changed = false;
1705 return -EOPNOTSUPP;
1706 }
1707
nbp_vlan_delete(struct net_bridge_port * port,u16 vid)1708 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1709 {
1710 return -EOPNOTSUPP;
1711 }
1712
nbp_vlan_flush(struct net_bridge_port * port)1713 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1714 {
1715 }
1716
br_vlan_find(struct net_bridge_vlan_group * vg,u16 vid)1717 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1718 u16 vid)
1719 {
1720 return NULL;
1721 }
1722
nbp_vlan_init(struct net_bridge_port * port,struct netlink_ext_ack * extack)1723 static inline int nbp_vlan_init(struct net_bridge_port *port,
1724 struct netlink_ext_ack *extack)
1725 {
1726 return 0;
1727 }
1728
br_vlan_get_tag(const struct sk_buff * skb,u16 * tag)1729 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1730 {
1731 return 0;
1732 }
1733
br_get_pvid(const struct net_bridge_vlan_group * vg)1734 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1735 {
1736 return 0;
1737 }
1738
br_vlan_filter_toggle(struct net_bridge * br,unsigned long val,struct netlink_ext_ack * extack)1739 static inline int br_vlan_filter_toggle(struct net_bridge *br,
1740 unsigned long val,
1741 struct netlink_ext_ack *extack)
1742 {
1743 return -EOPNOTSUPP;
1744 }
1745
nbp_get_num_vlan_infos(struct net_bridge_port * p,u32 filter_mask)1746 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1747 u32 filter_mask)
1748 {
1749 return 0;
1750 }
1751
br_vlan_fill_forward_path_pvid(struct net_bridge * br,struct net_device_path_ctx * ctx,struct net_device_path * path)1752 static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1753 struct net_device_path_ctx *ctx,
1754 struct net_device_path *path)
1755 {
1756 }
1757
br_vlan_fill_forward_path_mode(struct net_bridge * br,struct net_bridge_port * dst,struct net_device_path * path)1758 static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1759 struct net_bridge_port *dst,
1760 struct net_device_path *path)
1761 {
1762 return 0;
1763 }
1764
br_vlan_group(const struct net_bridge * br)1765 static inline struct net_bridge_vlan_group *br_vlan_group(
1766 const struct net_bridge *br)
1767 {
1768 return NULL;
1769 }
1770
nbp_vlan_group(const struct net_bridge_port * p)1771 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1772 const struct net_bridge_port *p)
1773 {
1774 return NULL;
1775 }
1776
br_vlan_group_rcu(const struct net_bridge * br)1777 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1778 const struct net_bridge *br)
1779 {
1780 return NULL;
1781 }
1782
nbp_vlan_group_rcu(const struct net_bridge_port * p)1783 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1784 const struct net_bridge_port *p)
1785 {
1786 return NULL;
1787 }
1788
br_vlan_get_stats(const struct net_bridge_vlan * v,struct pcpu_sw_netstats * stats)1789 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1790 struct pcpu_sw_netstats *stats)
1791 {
1792 }
1793
br_vlan_port_event(struct net_bridge_port * p,unsigned long event)1794 static inline void br_vlan_port_event(struct net_bridge_port *p,
1795 unsigned long event)
1796 {
1797 }
1798
br_vlan_bridge_event(struct net_device * dev,unsigned long event,void * ptr)1799 static inline int br_vlan_bridge_event(struct net_device *dev,
1800 unsigned long event, void *ptr)
1801 {
1802 return 0;
1803 }
1804
br_vlan_rtnl_init(void)1805 static inline int br_vlan_rtnl_init(void)
1806 {
1807 return 0;
1808 }
1809
br_vlan_rtnl_uninit(void)1810 static inline void br_vlan_rtnl_uninit(void)
1811 {
1812 }
1813
br_vlan_notify(const struct net_bridge * br,const struct net_bridge_port * p,u16 vid,u16 vid_range,int cmd)1814 static inline void br_vlan_notify(const struct net_bridge *br,
1815 const struct net_bridge_port *p,
1816 u16 vid, u16 vid_range,
1817 int cmd)
1818 {
1819 }
1820
br_vlan_can_enter_range(const struct net_bridge_vlan * v_curr,const struct net_bridge_vlan * range_end)1821 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1822 const struct net_bridge_vlan *range_end)
1823 {
1824 return true;
1825 }
1826
br_vlan_flags(const struct net_bridge_vlan * v,u16 pvid)1827 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1828 {
1829 return 0;
1830 }
1831
1832 #endif
1833
1834 /* br_vlan_options.c */
1835 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1836 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1837 const struct net_bridge_vlan *range_end);
1838 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v,
1839 const struct net_bridge_port *p);
1840 size_t br_vlan_opts_nl_size(void);
1841 int br_vlan_process_options(const struct net_bridge *br,
1842 const struct net_bridge_port *p,
1843 struct net_bridge_vlan *range_start,
1844 struct net_bridge_vlan *range_end,
1845 struct nlattr **tb,
1846 struct netlink_ext_ack *extack);
1847 int br_vlan_rtm_process_global_options(struct net_device *dev,
1848 const struct nlattr *attr,
1849 int cmd,
1850 struct netlink_ext_ack *extack);
1851 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
1852 const struct net_bridge_vlan *r_end);
1853 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
1854 const struct net_bridge_vlan *v_opts);
1855
1856 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */
br_vlan_get_state(const struct net_bridge_vlan * v)1857 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1858 {
1859 return READ_ONCE(v->state);
1860 }
1861
br_vlan_set_state(struct net_bridge_vlan * v,u8 state)1862 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1863 {
1864 WRITE_ONCE(v->state, state);
1865 }
1866
br_vlan_get_pvid_state(const struct net_bridge_vlan_group * vg)1867 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1868 {
1869 return READ_ONCE(vg->pvid_state);
1870 }
1871
br_vlan_set_pvid_state(struct net_bridge_vlan_group * vg,u8 state)1872 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1873 u8 state)
1874 {
1875 WRITE_ONCE(vg->pvid_state, state);
1876 }
1877
1878 /* learn_allow is true at ingress and false at egress */
br_vlan_state_allowed(u8 state,bool learn_allow)1879 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1880 {
1881 switch (state) {
1882 case BR_STATE_LEARNING:
1883 return learn_allow;
1884 case BR_STATE_FORWARDING:
1885 return true;
1886 default:
1887 return false;
1888 }
1889 }
1890 #endif
1891
1892 /* br_mst.c */
1893 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1894 DECLARE_STATIC_KEY_FALSE(br_mst_used);
br_mst_is_enabled(struct net_bridge * br)1895 static inline bool br_mst_is_enabled(struct net_bridge *br)
1896 {
1897 return static_branch_unlikely(&br_mst_used) &&
1898 br_opt_get(br, BROPT_MST_ENABLED);
1899 }
1900
1901 int br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state,
1902 struct netlink_ext_ack *extack);
1903 int br_mst_vlan_set_msti(struct net_bridge_vlan *v, u16 msti);
1904 void br_mst_vlan_init_state(struct net_bridge_vlan *v);
1905 int br_mst_set_enabled(struct net_bridge *br, bool on,
1906 struct netlink_ext_ack *extack);
1907 size_t br_mst_info_size(const struct net_bridge_vlan_group *vg);
1908 int br_mst_fill_info(struct sk_buff *skb,
1909 const struct net_bridge_vlan_group *vg);
1910 int br_mst_process(struct net_bridge_port *p, const struct nlattr *mst_attr,
1911 struct netlink_ext_ack *extack);
1912 #else
br_mst_is_enabled(struct net_bridge * br)1913 static inline bool br_mst_is_enabled(struct net_bridge *br)
1914 {
1915 return false;
1916 }
1917
br_mst_set_state(struct net_bridge_port * p,u16 msti,u8 state,struct netlink_ext_ack * extack)1918 static inline int br_mst_set_state(struct net_bridge_port *p, u16 msti,
1919 u8 state, struct netlink_ext_ack *extack)
1920 {
1921 return -EOPNOTSUPP;
1922 }
1923
br_mst_set_enabled(struct net_bridge * br,bool on,struct netlink_ext_ack * extack)1924 static inline int br_mst_set_enabled(struct net_bridge *br, bool on,
1925 struct netlink_ext_ack *extack)
1926 {
1927 return -EOPNOTSUPP;
1928 }
1929
br_mst_info_size(const struct net_bridge_vlan_group * vg)1930 static inline size_t br_mst_info_size(const struct net_bridge_vlan_group *vg)
1931 {
1932 return 0;
1933 }
1934
br_mst_fill_info(struct sk_buff * skb,const struct net_bridge_vlan_group * vg)1935 static inline int br_mst_fill_info(struct sk_buff *skb,
1936 const struct net_bridge_vlan_group *vg)
1937 {
1938 return -EOPNOTSUPP;
1939 }
1940
br_mst_process(struct net_bridge_port * p,const struct nlattr * mst_attr,struct netlink_ext_ack * extack)1941 static inline int br_mst_process(struct net_bridge_port *p,
1942 const struct nlattr *mst_attr,
1943 struct netlink_ext_ack *extack)
1944 {
1945 return -EOPNOTSUPP;
1946 }
1947 #endif
1948
1949 struct nf_br_ops {
1950 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1951 };
1952 extern const struct nf_br_ops __rcu *nf_br_ops;
1953
1954 /* br_netfilter.c */
1955 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1956 int br_nf_core_init(void);
1957 void br_nf_core_fini(void);
1958 void br_netfilter_rtable_init(struct net_bridge *);
1959 #else
br_nf_core_init(void)1960 static inline int br_nf_core_init(void) { return 0; }
br_nf_core_fini(void)1961 static inline void br_nf_core_fini(void) {}
1962 #define br_netfilter_rtable_init(x)
1963 #endif
1964
1965 /* br_stp.c */
1966 void br_set_state(struct net_bridge_port *p, unsigned int state);
1967 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1968 void br_init_port(struct net_bridge_port *p);
1969 void br_become_designated_port(struct net_bridge_port *p);
1970
1971 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1972 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1973 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1974 int br_set_max_age(struct net_bridge *br, unsigned long x);
1975 int __set_ageing_time(struct net_device *dev, unsigned long t);
1976 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1977
1978
1979 /* br_stp_if.c */
1980 void br_stp_enable_bridge(struct net_bridge *br);
1981 void br_stp_disable_bridge(struct net_bridge *br);
1982 int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1983 struct netlink_ext_ack *extack);
1984 void br_stp_enable_port(struct net_bridge_port *p);
1985 void br_stp_disable_port(struct net_bridge_port *p);
1986 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1987 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1988 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1989 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1990 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1991 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1992
1993 /* br_stp_bpdu.c */
1994 struct stp_proto;
1995 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1996 struct net_device *dev);
1997
1998 /* br_stp_timer.c */
1999 void br_stp_timer_init(struct net_bridge *br);
2000 void br_stp_port_timer_init(struct net_bridge_port *p);
2001 unsigned long br_timer_value(const struct timer_list *timer);
2002
2003 /* br.c */
2004 #if IS_ENABLED(CONFIG_ATM_LANE)
2005 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
2006 #endif
2007
2008 /* br_mrp.c */
2009 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
2010 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
2011 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
2012 bool br_mrp_enabled(struct net_bridge *br);
2013 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
2014 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
2015 #else
br_mrp_parse(struct net_bridge * br,struct net_bridge_port * p,struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)2016 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
2017 struct nlattr *attr, int cmd,
2018 struct netlink_ext_ack *extack)
2019 {
2020 return -EOPNOTSUPP;
2021 }
2022
br_mrp_enabled(struct net_bridge * br)2023 static inline bool br_mrp_enabled(struct net_bridge *br)
2024 {
2025 return false;
2026 }
2027
br_mrp_port_del(struct net_bridge * br,struct net_bridge_port * p)2028 static inline void br_mrp_port_del(struct net_bridge *br,
2029 struct net_bridge_port *p)
2030 {
2031 }
2032
br_mrp_fill_info(struct sk_buff * skb,struct net_bridge * br)2033 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
2034 {
2035 return 0;
2036 }
2037
2038 #endif
2039
2040 /* br_cfm.c */
2041 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
2042 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
2043 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
2044 bool br_cfm_created(struct net_bridge *br);
2045 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
2046 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br);
2047 int br_cfm_status_fill_info(struct sk_buff *skb,
2048 struct net_bridge *br,
2049 bool getlink);
2050 int br_cfm_mep_count(struct net_bridge *br, u32 *count);
2051 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count);
2052 #else
br_cfm_parse(struct net_bridge * br,struct net_bridge_port * p,struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)2053 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
2054 struct nlattr *attr, int cmd,
2055 struct netlink_ext_ack *extack)
2056 {
2057 return -EOPNOTSUPP;
2058 }
2059
br_cfm_created(struct net_bridge * br)2060 static inline bool br_cfm_created(struct net_bridge *br)
2061 {
2062 return false;
2063 }
2064
br_cfm_port_del(struct net_bridge * br,struct net_bridge_port * p)2065 static inline void br_cfm_port_del(struct net_bridge *br,
2066 struct net_bridge_port *p)
2067 {
2068 }
2069
br_cfm_config_fill_info(struct sk_buff * skb,struct net_bridge * br)2070 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br)
2071 {
2072 return -EOPNOTSUPP;
2073 }
2074
br_cfm_status_fill_info(struct sk_buff * skb,struct net_bridge * br,bool getlink)2075 static inline int br_cfm_status_fill_info(struct sk_buff *skb,
2076 struct net_bridge *br,
2077 bool getlink)
2078 {
2079 return -EOPNOTSUPP;
2080 }
2081
br_cfm_mep_count(struct net_bridge * br,u32 * count)2082 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
2083 {
2084 *count = 0;
2085 return -EOPNOTSUPP;
2086 }
2087
br_cfm_peer_mep_count(struct net_bridge * br,u32 * count)2088 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
2089 {
2090 *count = 0;
2091 return -EOPNOTSUPP;
2092 }
2093 #endif
2094
2095 /* br_netlink.c */
2096 extern struct rtnl_link_ops br_link_ops;
2097 int br_netlink_init(void);
2098 void br_netlink_fini(void);
2099 void br_ifinfo_notify(int event, const struct net_bridge *br,
2100 const struct net_bridge_port *port);
2101 void br_info_notify(int event, const struct net_bridge *br,
2102 const struct net_bridge_port *port, u32 filter);
2103 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
2104 struct netlink_ext_ack *extack);
2105 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
2106 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
2107 u32 filter_mask, int nlflags);
2108 int br_process_vlan_info(struct net_bridge *br,
2109 struct net_bridge_port *p, int cmd,
2110 struct bridge_vlan_info *vinfo_curr,
2111 struct bridge_vlan_info **vinfo_last,
2112 bool *changed,
2113 struct netlink_ext_ack *extack);
2114
2115 #ifdef CONFIG_SYSFS
2116 /* br_sysfs_if.c */
2117 extern const struct sysfs_ops brport_sysfs_ops;
2118 int br_sysfs_addif(struct net_bridge_port *p);
2119 int br_sysfs_renameif(struct net_bridge_port *p);
2120
2121 /* br_sysfs_br.c */
2122 int br_sysfs_addbr(struct net_device *dev);
2123 void br_sysfs_delbr(struct net_device *dev);
2124
2125 #else
2126
br_sysfs_addif(struct net_bridge_port * p)2127 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
br_sysfs_renameif(struct net_bridge_port * p)2128 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
br_sysfs_addbr(struct net_device * dev)2129 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
br_sysfs_delbr(struct net_device * dev)2130 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
2131 #endif /* CONFIG_SYSFS */
2132
2133 /* br_switchdev.c */
2134 #ifdef CONFIG_NET_SWITCHDEV
2135 int br_switchdev_port_offload(struct net_bridge_port *p,
2136 struct net_device *dev, const void *ctx,
2137 struct notifier_block *atomic_nb,
2138 struct notifier_block *blocking_nb,
2139 bool tx_fwd_offload,
2140 struct netlink_ext_ack *extack);
2141
2142 void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
2143 struct notifier_block *atomic_nb,
2144 struct notifier_block *blocking_nb);
2145
2146 int br_switchdev_port_replay(struct net_bridge_port *p,
2147 struct net_device *dev, const void *ctx,
2148 struct notifier_block *atomic_nb,
2149 struct notifier_block *blocking_nb,
2150 struct netlink_ext_ack *extack);
2151
2152 bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb);
2153
2154 void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb);
2155
2156 void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
2157 struct sk_buff *skb);
2158 void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
2159 struct sk_buff *skb);
2160 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
2161 struct sk_buff *skb);
2162 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
2163 const struct sk_buff *skb);
2164 int br_switchdev_set_port_flag(struct net_bridge_port *p,
2165 unsigned long flags,
2166 unsigned long mask,
2167 struct netlink_ext_ack *extack);
2168 void br_switchdev_fdb_notify(struct net_bridge *br,
2169 const struct net_bridge_fdb_entry *fdb, int type);
2170 void br_switchdev_mdb_notify(struct net_device *dev,
2171 struct net_bridge_mdb_entry *mp,
2172 struct net_bridge_port_group *pg,
2173 int type);
2174 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
2175 bool changed, struct netlink_ext_ack *extack);
2176 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
2177 void br_switchdev_init(struct net_bridge *br);
2178
br_switchdev_frame_unmark(struct sk_buff * skb)2179 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
2180 {
2181 skb->offload_fwd_mark = 0;
2182 }
2183 #else
2184 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)2185 br_switchdev_port_offload(struct net_bridge_port *p,
2186 struct net_device *dev, const void *ctx,
2187 struct notifier_block *atomic_nb,
2188 struct notifier_block *blocking_nb,
2189 bool tx_fwd_offload,
2190 struct netlink_ext_ack *extack)
2191 {
2192 return -EOPNOTSUPP;
2193 }
2194
2195 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)2196 br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
2197 struct notifier_block *atomic_nb,
2198 struct notifier_block *blocking_nb)
2199 {
2200 }
2201
2202 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)2203 br_switchdev_port_replay(struct net_bridge_port *p,
2204 struct net_device *dev, const void *ctx,
2205 struct notifier_block *atomic_nb,
2206 struct notifier_block *blocking_nb,
2207 struct netlink_ext_ack *extack)
2208 {
2209 return -EOPNOTSUPP;
2210 }
2211
br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff * skb)2212 static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb)
2213 {
2214 return false;
2215 }
2216
br_switchdev_frame_set_offload_fwd_mark(struct sk_buff * skb)2217 static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb)
2218 {
2219 }
2220
2221 static inline void
nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port * p,struct sk_buff * skb)2222 nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
2223 struct sk_buff *skb)
2224 {
2225 }
2226
2227 static inline void
nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port * p,struct sk_buff * skb)2228 nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
2229 struct sk_buff *skb)
2230 {
2231 }
2232
nbp_switchdev_frame_mark(const struct net_bridge_port * p,struct sk_buff * skb)2233 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
2234 struct sk_buff *skb)
2235 {
2236 }
2237
nbp_switchdev_allowed_egress(const struct net_bridge_port * p,const struct sk_buff * skb)2238 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
2239 const struct sk_buff *skb)
2240 {
2241 return true;
2242 }
2243
br_switchdev_set_port_flag(struct net_bridge_port * p,unsigned long flags,unsigned long mask,struct netlink_ext_ack * extack)2244 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
2245 unsigned long flags,
2246 unsigned long mask,
2247 struct netlink_ext_ack *extack)
2248 {
2249 return 0;
2250 }
2251
br_switchdev_port_vlan_add(struct net_device * dev,u16 vid,u16 flags,bool changed,struct netlink_ext_ack * extack)2252 static inline int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid,
2253 u16 flags, bool changed,
2254 struct netlink_ext_ack *extack)
2255 {
2256 return -EOPNOTSUPP;
2257 }
2258
br_switchdev_port_vlan_del(struct net_device * dev,u16 vid)2259 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
2260 {
2261 return -EOPNOTSUPP;
2262 }
2263
2264 static inline void
br_switchdev_fdb_notify(struct net_bridge * br,const struct net_bridge_fdb_entry * fdb,int type)2265 br_switchdev_fdb_notify(struct net_bridge *br,
2266 const struct net_bridge_fdb_entry *fdb, int type)
2267 {
2268 }
2269
br_switchdev_mdb_notify(struct net_device * dev,struct net_bridge_mdb_entry * mp,struct net_bridge_port_group * pg,int type)2270 static inline void br_switchdev_mdb_notify(struct net_device *dev,
2271 struct net_bridge_mdb_entry *mp,
2272 struct net_bridge_port_group *pg,
2273 int type)
2274 {
2275 }
2276
br_switchdev_frame_unmark(struct sk_buff * skb)2277 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
2278 {
2279 }
2280
br_switchdev_init(struct net_bridge * br)2281 static inline void br_switchdev_init(struct net_bridge *br)
2282 {
2283 }
2284
2285 #endif /* CONFIG_NET_SWITCHDEV */
2286
2287 /* br_arp_nd_proxy.c */
2288 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
2289 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
2290 u16 vid, struct net_bridge_port *p);
2291 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
2292 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
2293 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
2294 bool br_is_neigh_suppress_enabled(const struct net_bridge_port *p, u16 vid);
2295 #endif
2296