1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Linux ethernet bridge
4 *
5 * Authors:
6 * Lennert Buytenhek <buytenh@gnu.org>
7 */
8
9 #ifndef _BR_PRIVATE_H
10 #define _BR_PRIVATE_H
11
12 #include <linux/netdevice.h>
13 #include <linux/if_bridge.h>
14 #include <linux/netpoll.h>
15 #include <linux/u64_stats_sync.h>
16 #include <net/route.h>
17 #include <net/ip6_fib.h>
18 #include <net/pkt_cls.h>
19 #include <linux/if_vlan.h>
20 #include <linux/rhashtable.h>
21 #include <linux/refcount.h>
22
23 #define BR_HASH_BITS 8
24 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
25
26 #define BR_HOLD_TIME (1*HZ)
27
28 #define BR_PORT_BITS 10
29 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
30
31 #define BR_MULTICAST_DEFAULT_HASH_MAX 4096
32 #define BR_MULTICAST_QUERY_INTVL_MIN msecs_to_jiffies(1000)
33 #define BR_MULTICAST_STARTUP_QUERY_INTVL_MIN BR_MULTICAST_QUERY_INTVL_MIN
34
35 #define BR_HWDOM_MAX BITS_PER_LONG
36
37 #define BR_VERSION "2.3"
38
39 /* Control of forwarding link local multicast */
40 #define BR_GROUPFWD_DEFAULT 0
41 /* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */
42 enum {
43 BR_GROUPFWD_STP = BIT(0),
44 BR_GROUPFWD_MACPAUSE = BIT(1),
45 BR_GROUPFWD_LACP = BIT(2),
46 };
47
48 #define BR_GROUPFWD_RESTRICTED (BR_GROUPFWD_STP | BR_GROUPFWD_MACPAUSE | \
49 BR_GROUPFWD_LACP)
50 /* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
51 #define BR_GROUPFWD_8021AD 0xB801u
52
53 /* Path to usermode spanning tree program */
54 #define BR_STP_PROG "/sbin/bridge-stp"
55
56 #define BR_FDB_NOTIFY_SETTABLE_BITS (FDB_NOTIFY_BIT | FDB_NOTIFY_INACTIVE_BIT)
57
58 typedef struct bridge_id bridge_id;
59 typedef struct mac_addr mac_addr;
60 typedef __u16 port_id;
61
62 struct bridge_id {
63 unsigned char prio[2];
64 unsigned char addr[ETH_ALEN];
65 };
66
67 struct mac_addr {
68 unsigned char addr[ETH_ALEN];
69 };
70
71 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
72 /* our own querier */
73 struct bridge_mcast_own_query {
74 struct timer_list timer;
75 u32 startup_sent;
76 };
77
78 /* other querier */
79 struct bridge_mcast_other_query {
80 struct timer_list timer;
81 struct timer_list delay_timer;
82 };
83
84 /* selected querier */
85 struct bridge_mcast_querier {
86 struct br_ip addr;
87 int port_ifidx;
88 seqcount_spinlock_t seq;
89 };
90
91 /* IGMP/MLD statistics */
92 struct bridge_mcast_stats {
93 struct br_mcast_stats mstats;
94 struct u64_stats_sync syncp;
95 };
96
97 struct br_mdb_src_entry {
98 struct br_ip addr;
99 };
100
101 struct br_mdb_config {
102 struct net_bridge *br;
103 struct net_bridge_port *p;
104 struct br_mdb_entry *entry;
105 struct br_ip group;
106 bool src_entry;
107 u8 filter_mode;
108 u16 nlflags;
109 struct br_mdb_src_entry *src_entries;
110 int num_src_entries;
111 u8 rt_protocol;
112 };
113 #endif
114
115 /* net_bridge_mcast_port must be always defined due to forwarding stubs */
116 struct net_bridge_mcast_port {
117 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
118 struct net_bridge_port *port;
119 struct net_bridge_vlan *vlan;
120
121 struct bridge_mcast_own_query ip4_own_query;
122 struct timer_list ip4_mc_router_timer;
123 struct hlist_node ip4_rlist;
124 #if IS_ENABLED(CONFIG_IPV6)
125 struct bridge_mcast_own_query ip6_own_query;
126 struct timer_list ip6_mc_router_timer;
127 struct hlist_node ip6_rlist;
128 #endif /* IS_ENABLED(CONFIG_IPV6) */
129 unsigned char multicast_router;
130 u32 mdb_n_entries;
131 u32 mdb_max_entries;
132 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
133 };
134
135 /* net_bridge_mcast must be always defined due to forwarding stubs */
136 struct net_bridge_mcast {
137 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
138 struct net_bridge *br;
139 struct net_bridge_vlan *vlan;
140
141 u32 multicast_last_member_count;
142 u32 multicast_startup_query_count;
143
144 u8 multicast_querier;
145 u8 multicast_igmp_version;
146 u8 multicast_router;
147 #if IS_ENABLED(CONFIG_IPV6)
148 u8 multicast_mld_version;
149 #endif
150 unsigned long multicast_last_member_interval;
151 unsigned long multicast_membership_interval;
152 unsigned long multicast_querier_interval;
153 unsigned long multicast_query_interval;
154 unsigned long multicast_query_response_interval;
155 unsigned long multicast_startup_query_interval;
156 struct hlist_head ip4_mc_router_list;
157 struct timer_list ip4_mc_router_timer;
158 struct bridge_mcast_other_query ip4_other_query;
159 struct bridge_mcast_own_query ip4_own_query;
160 struct bridge_mcast_querier ip4_querier;
161 #if IS_ENABLED(CONFIG_IPV6)
162 struct hlist_head ip6_mc_router_list;
163 struct timer_list ip6_mc_router_timer;
164 struct bridge_mcast_other_query ip6_other_query;
165 struct bridge_mcast_own_query ip6_own_query;
166 struct bridge_mcast_querier ip6_querier;
167 #endif /* IS_ENABLED(CONFIG_IPV6) */
168 #endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
169 };
170
171 struct br_tunnel_info {
172 __be64 tunnel_id;
173 struct metadata_dst __rcu *tunnel_dst;
174 };
175
176 /* private vlan flags */
177 enum {
178 BR_VLFLAG_PER_PORT_STATS = BIT(0),
179 BR_VLFLAG_ADDED_BY_SWITCHDEV = BIT(1),
180 BR_VLFLAG_MCAST_ENABLED = BIT(2),
181 BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3),
182 BR_VLFLAG_NEIGH_SUPPRESS_ENABLED = BIT(4),
183 };
184
185 /**
186 * struct net_bridge_vlan - per-vlan entry
187 *
188 * @vnode: rhashtable member
189 * @vid: VLAN id
190 * @flags: bridge vlan flags
191 * @priv_flags: private (in-kernel) bridge vlan flags
192 * @state: STP state (e.g. blocking, learning, forwarding)
193 * @stats: per-cpu VLAN statistics
194 * @br: if MASTER flag set, this points to a bridge struct
195 * @port: if MASTER flag unset, this points to a port struct
196 * @refcnt: if MASTER flag set, this is bumped for each port referencing it
197 * @brvlan: if MASTER flag unset, this points to the global per-VLAN context
198 * for this VLAN entry
199 * @br_mcast_ctx: if MASTER flag set, this is the global vlan multicast context
200 * @port_mcast_ctx: if MASTER flag unset, this is the per-port/vlan multicast
201 * context
202 * @msti: if MASTER flag set, this holds the VLANs MST instance
203 * @vlist: sorted list of VLAN entries
204 * @rcu: used for entry destruction
205 *
206 * This structure is shared between the global per-VLAN entries contained in
207 * the bridge rhashtable and the local per-port per-VLAN entries contained in
208 * the port's rhashtable. The union entries should be interpreted depending on
209 * the entry flags that are set.
210 */
211 struct net_bridge_vlan {
212 struct rhash_head vnode;
213 struct rhash_head tnode;
214 u16 vid;
215 u16 flags;
216 u16 priv_flags;
217 u8 state;
218 struct pcpu_sw_netstats __percpu *stats;
219 union {
220 struct net_bridge *br;
221 struct net_bridge_port *port;
222 };
223 union {
224 refcount_t refcnt;
225 struct net_bridge_vlan *brvlan;
226 };
227
228 struct br_tunnel_info tinfo;
229
230 union {
231 struct net_bridge_mcast br_mcast_ctx;
232 struct net_bridge_mcast_port port_mcast_ctx;
233 };
234
235 u16 msti;
236
237 struct list_head vlist;
238
239 struct rcu_head rcu;
240 };
241
242 /**
243 * struct net_bridge_vlan_group
244 *
245 * @vlan_hash: VLAN entry rhashtable
246 * @vlan_list: sorted VLAN entry list
247 * @num_vlans: number of total VLAN entries
248 * @pvid: PVID VLAN id
249 * @pvid_state: PVID's STP state (e.g. forwarding, learning, blocking)
250 *
251 * IMPORTANT: Be careful when checking if there're VLAN entries using list
252 * primitives because the bridge can have entries in its list which
253 * are just for global context but not for filtering, i.e. they have
254 * the master flag set but not the brentry flag. If you have to check
255 * if there're "real" entries in the bridge please test @num_vlans
256 */
257 struct net_bridge_vlan_group {
258 struct rhashtable vlan_hash;
259 struct rhashtable tunnel_hash;
260 struct list_head vlan_list;
261 u16 num_vlans;
262 u16 pvid;
263 u8 pvid_state;
264 };
265
266 /* bridge fdb flags */
267 enum {
268 BR_FDB_LOCAL,
269 BR_FDB_STATIC,
270 BR_FDB_STICKY,
271 BR_FDB_ADDED_BY_USER,
272 BR_FDB_ADDED_BY_EXT_LEARN,
273 BR_FDB_OFFLOADED,
274 BR_FDB_NOTIFY,
275 BR_FDB_NOTIFY_INACTIVE,
276 BR_FDB_LOCKED,
277 };
278
279 struct net_bridge_fdb_key {
280 mac_addr addr;
281 u16 vlan_id;
282 };
283
284 struct net_bridge_fdb_entry {
285 struct rhash_head rhnode;
286 struct net_bridge_port *dst;
287
288 struct net_bridge_fdb_key key;
289 struct hlist_node fdb_node;
290 unsigned long flags;
291
292 /* write-heavy members should not affect lookups */
293 unsigned long updated ____cacheline_aligned_in_smp;
294 unsigned long used;
295
296 struct rcu_head rcu;
297 };
298
299 struct net_bridge_fdb_flush_desc {
300 unsigned long flags;
301 unsigned long flags_mask;
302 int port_ifindex;
303 u16 vlan_id;
304 };
305
306 #define MDB_PG_FLAGS_PERMANENT BIT(0)
307 #define MDB_PG_FLAGS_OFFLOAD BIT(1)
308 #define MDB_PG_FLAGS_FAST_LEAVE BIT(2)
309 #define MDB_PG_FLAGS_STAR_EXCL BIT(3)
310 #define MDB_PG_FLAGS_BLOCKED BIT(4)
311
312 #define PG_SRC_ENT_LIMIT 32
313
314 #define BR_SGRP_F_DELETE BIT(0)
315 #define BR_SGRP_F_SEND BIT(1)
316 #define BR_SGRP_F_INSTALLED BIT(2)
317 #define BR_SGRP_F_USER_ADDED BIT(3)
318
319 struct net_bridge_mcast_gc {
320 struct hlist_node gc_node;
321 void (*destroy)(struct net_bridge_mcast_gc *gc);
322 };
323
324 struct net_bridge_group_src {
325 struct hlist_node node;
326
327 struct br_ip addr;
328 struct net_bridge_port_group *pg;
329 u8 flags;
330 u8 src_query_rexmit_cnt;
331 struct timer_list timer;
332
333 struct net_bridge *br;
334 struct net_bridge_mcast_gc mcast_gc;
335 struct rcu_head rcu;
336 };
337
338 struct net_bridge_port_group_sg_key {
339 struct net_bridge_port *port;
340 struct br_ip addr;
341 };
342
343 struct net_bridge_port_group {
344 struct net_bridge_port_group __rcu *next;
345 struct net_bridge_port_group_sg_key key;
346 unsigned char eth_addr[ETH_ALEN] __aligned(2);
347 unsigned char flags;
348 unsigned char filter_mode;
349 unsigned char grp_query_rexmit_cnt;
350 unsigned char rt_protocol;
351
352 struct hlist_head src_list;
353 unsigned int src_ents;
354 struct timer_list timer;
355 struct timer_list rexmit_timer;
356 struct hlist_node mglist;
357 struct rb_root eht_set_tree;
358 struct rb_root eht_host_tree;
359
360 struct rhash_head rhnode;
361 struct net_bridge_mcast_gc mcast_gc;
362 struct rcu_head rcu;
363 };
364
365 struct net_bridge_mdb_entry {
366 struct rhash_head rhnode;
367 struct net_bridge *br;
368 struct net_bridge_port_group __rcu *ports;
369 struct br_ip addr;
370 bool host_joined;
371
372 struct timer_list timer;
373 struct hlist_node mdb_node;
374
375 struct net_bridge_mcast_gc mcast_gc;
376 struct rcu_head rcu;
377 };
378
379 struct net_bridge_port {
380 struct net_bridge *br;
381 struct net_device *dev;
382 netdevice_tracker dev_tracker;
383 struct list_head list;
384
385 unsigned long flags;
386 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
387 struct net_bridge_vlan_group __rcu *vlgrp;
388 #endif
389 struct net_bridge_port __rcu *backup_port;
390 u32 backup_nhid;
391
392 /* STP */
393 u8 priority;
394 u8 state;
395 u16 port_no;
396 unsigned char topology_change_ack;
397 unsigned char config_pending;
398 port_id port_id;
399 port_id designated_port;
400 bridge_id designated_root;
401 bridge_id designated_bridge;
402 u32 path_cost;
403 u32 designated_cost;
404 unsigned long designated_age;
405
406 struct timer_list forward_delay_timer;
407 struct timer_list hold_timer;
408 struct timer_list message_age_timer;
409 struct kobject kobj;
410 struct rcu_head rcu;
411
412 struct net_bridge_mcast_port multicast_ctx;
413
414 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
415 struct bridge_mcast_stats __percpu *mcast_stats;
416
417 u32 multicast_eht_hosts_limit;
418 u32 multicast_eht_hosts_cnt;
419 struct hlist_head mglist;
420 #endif
421
422 #ifdef CONFIG_SYSFS
423 char sysfs_name[IFNAMSIZ];
424 #endif
425
426 #ifdef CONFIG_NET_POLL_CONTROLLER
427 struct netpoll *np;
428 #endif
429 #ifdef CONFIG_NET_SWITCHDEV
430 /* Identifier used to group ports that share the same switchdev
431 * hardware domain.
432 */
433 int hwdom;
434 int offload_count;
435 struct netdev_phys_item_id ppid;
436 #endif
437 u16 group_fwd_mask;
438 u16 backup_redirected_cnt;
439
440 struct bridge_stp_xstats stp_xstats;
441 };
442
443 #define kobj_to_brport(obj) container_of(obj, struct net_bridge_port, kobj)
444
445 #define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
446 #define br_promisc_port(p) ((p)->flags & BR_PROMISC)
447
br_port_get_rcu(const struct net_device * dev)448 static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
449 {
450 return rcu_dereference(dev->rx_handler_data);
451 }
452
br_port_get_rtnl(const struct net_device * dev)453 static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
454 {
455 return netif_is_bridge_port(dev) ?
456 rtnl_dereference(dev->rx_handler_data) : NULL;
457 }
458
br_port_get_rtnl_rcu(const struct net_device * dev)459 static inline struct net_bridge_port *br_port_get_rtnl_rcu(const struct net_device *dev)
460 {
461 return netif_is_bridge_port(dev) ?
462 rcu_dereference_rtnl(dev->rx_handler_data) : NULL;
463 }
464
465 enum net_bridge_opts {
466 BROPT_VLAN_ENABLED,
467 BROPT_VLAN_STATS_ENABLED,
468 BROPT_NF_CALL_IPTABLES,
469 BROPT_NF_CALL_IP6TABLES,
470 BROPT_NF_CALL_ARPTABLES,
471 BROPT_GROUP_ADDR_SET,
472 BROPT_MULTICAST_ENABLED,
473 BROPT_MULTICAST_QUERY_USE_IFADDR,
474 BROPT_MULTICAST_STATS_ENABLED,
475 BROPT_HAS_IPV6_ADDR,
476 BROPT_NEIGH_SUPPRESS_ENABLED,
477 BROPT_MTU_SET_BY_USER,
478 BROPT_VLAN_STATS_PER_PORT,
479 BROPT_NO_LL_LEARN,
480 BROPT_VLAN_BRIDGE_BINDING,
481 BROPT_MCAST_VLAN_SNOOPING_ENABLED,
482 BROPT_MST_ENABLED,
483 };
484
485 struct net_bridge {
486 spinlock_t lock;
487 spinlock_t hash_lock;
488 struct hlist_head frame_type_list;
489 struct net_device *dev;
490 unsigned long options;
491 /* These fields are accessed on each packet */
492 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
493 __be16 vlan_proto;
494 u16 default_pvid;
495 struct net_bridge_vlan_group __rcu *vlgrp;
496 #endif
497
498 struct rhashtable fdb_hash_tbl;
499 struct list_head port_list;
500 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
501 union {
502 struct rtable fake_rtable;
503 struct rt6_info fake_rt6_info;
504 };
505 #endif
506 u16 group_fwd_mask;
507 u16 group_fwd_mask_required;
508
509 /* STP */
510 bridge_id designated_root;
511 bridge_id bridge_id;
512 unsigned char topology_change;
513 unsigned char topology_change_detected;
514 u16 root_port;
515 unsigned long max_age;
516 unsigned long hello_time;
517 unsigned long forward_delay;
518 unsigned long ageing_time;
519 unsigned long bridge_max_age;
520 unsigned long bridge_hello_time;
521 unsigned long bridge_forward_delay;
522 unsigned long bridge_ageing_time;
523 u32 root_path_cost;
524
525 u8 group_addr[ETH_ALEN];
526
527 enum {
528 BR_NO_STP, /* no spanning tree */
529 BR_KERNEL_STP, /* old STP in kernel */
530 BR_USER_STP, /* new RSTP in userspace */
531 } stp_enabled;
532
533 struct net_bridge_mcast multicast_ctx;
534
535 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
536 struct bridge_mcast_stats __percpu *mcast_stats;
537
538 u32 hash_max;
539
540 spinlock_t multicast_lock;
541
542 struct rhashtable mdb_hash_tbl;
543 struct rhashtable sg_port_tbl;
544
545 struct hlist_head mcast_gc_list;
546 struct hlist_head mdb_list;
547
548 struct work_struct mcast_gc_work;
549 #endif
550
551 struct timer_list hello_timer;
552 struct timer_list tcn_timer;
553 struct timer_list topology_change_timer;
554 struct delayed_work gc_work;
555 struct kobject *ifobj;
556 u32 auto_cnt;
557
558 #ifdef CONFIG_NET_SWITCHDEV
559 /* Counter used to make sure that hardware domains get unique
560 * identifiers in case a bridge spans multiple switchdev instances.
561 */
562 int last_hwdom;
563 /* Bit mask of hardware domain numbers in use */
564 unsigned long busy_hwdoms;
565 #endif
566 struct hlist_head fdb_list;
567
568 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
569 struct hlist_head mrp_list;
570 #endif
571 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
572 struct hlist_head mep_list;
573 #endif
574 };
575
576 struct br_input_skb_cb {
577 struct net_device *brdev;
578
579 u16 frag_max_size;
580 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
581 u8 igmp;
582 u8 mrouters_only:1;
583 #endif
584 u8 proxyarp_replied:1;
585 u8 src_port_isolated:1;
586 u8 promisc:1;
587 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
588 u8 vlan_filtered:1;
589 #endif
590 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
591 u8 br_netfilter_broute:1;
592 #endif
593
594 #ifdef CONFIG_NET_SWITCHDEV
595 /* Set if TX data plane offloading is used towards at least one
596 * hardware domain.
597 */
598 u8 tx_fwd_offload:1;
599 /* The switchdev hardware domain from which this packet was received.
600 * If skb->offload_fwd_mark was set, then this packet was already
601 * forwarded by hardware to the other ports in the source hardware
602 * domain, otherwise it wasn't.
603 */
604 int src_hwdom;
605 /* Bit mask of hardware domains towards this packet has already been
606 * transmitted using the TX data plane offload.
607 */
608 unsigned long fwd_hwdoms;
609 #endif
610
611 u32 backup_nhid;
612 };
613
614 #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
615
616 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
617 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
618 #else
619 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
620 #endif
621
622 #define br_printk(level, br, format, args...) \
623 printk(level "%s: " format, (br)->dev->name, ##args)
624
625 #define br_err(__br, format, args...) \
626 br_printk(KERN_ERR, __br, format, ##args)
627 #define br_warn(__br, format, args...) \
628 br_printk(KERN_WARNING, __br, format, ##args)
629 #define br_notice(__br, format, args...) \
630 br_printk(KERN_NOTICE, __br, format, ##args)
631 #define br_info(__br, format, args...) \
632 br_printk(KERN_INFO, __br, format, ##args)
633
634 #define br_debug(br, format, args...) \
635 pr_debug("%s: " format, (br)->dev->name, ##args)
636
637 /* called under bridge lock */
br_is_root_bridge(const struct net_bridge * br)638 static inline int br_is_root_bridge(const struct net_bridge *br)
639 {
640 return !memcmp(&br->bridge_id, &br->designated_root, 8);
641 }
642
643 /* check if a VLAN entry is global */
br_vlan_is_master(const struct net_bridge_vlan * v)644 static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
645 {
646 return v->flags & BRIDGE_VLAN_INFO_MASTER;
647 }
648
649 /* check if a VLAN entry is used by the bridge */
br_vlan_is_brentry(const struct net_bridge_vlan * v)650 static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
651 {
652 return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
653 }
654
655 /* 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)656 static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
657 {
658 if (br_vlan_is_master(v)) {
659 if (br_vlan_is_brentry(v))
660 return true;
661 else
662 return false;
663 }
664
665 return true;
666 }
667
nbp_state_should_learn(const struct net_bridge_port * p)668 static inline bool nbp_state_should_learn(const struct net_bridge_port *p)
669 {
670 return p->state == BR_STATE_LEARNING || p->state == BR_STATE_FORWARDING;
671 }
672
br_vlan_valid_id(u16 vid,struct netlink_ext_ack * extack)673 static inline bool br_vlan_valid_id(u16 vid, struct netlink_ext_ack *extack)
674 {
675 bool ret = vid > 0 && vid < VLAN_VID_MASK;
676
677 if (!ret)
678 NL_SET_ERR_MSG_MOD(extack, "Vlan id is invalid");
679
680 return ret;
681 }
682
br_vlan_valid_range(const struct bridge_vlan_info * cur,const struct bridge_vlan_info * last,struct netlink_ext_ack * extack)683 static inline bool br_vlan_valid_range(const struct bridge_vlan_info *cur,
684 const struct bridge_vlan_info *last,
685 struct netlink_ext_ack *extack)
686 {
687 /* pvid flag is not allowed in ranges */
688 if (cur->flags & BRIDGE_VLAN_INFO_PVID) {
689 NL_SET_ERR_MSG_MOD(extack, "Pvid isn't allowed in a range");
690 return false;
691 }
692
693 /* when cur is the range end, check if:
694 * - it has range start flag
695 * - range ids are invalid (end is equal to or before start)
696 */
697 if (last) {
698 if (cur->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
699 NL_SET_ERR_MSG_MOD(extack, "Found a new vlan range start while processing one");
700 return false;
701 } else if (!(cur->flags & BRIDGE_VLAN_INFO_RANGE_END)) {
702 NL_SET_ERR_MSG_MOD(extack, "Vlan range end flag is missing");
703 return false;
704 } else if (cur->vid <= last->vid) {
705 NL_SET_ERR_MSG_MOD(extack, "End vlan id is less than or equal to start vlan id");
706 return false;
707 }
708 }
709
710 /* check for required range flags */
711 if (!(cur->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
712 BRIDGE_VLAN_INFO_RANGE_END))) {
713 NL_SET_ERR_MSG_MOD(extack, "Both vlan range flags are missing");
714 return false;
715 }
716
717 return true;
718 }
719
br_vlan_multicast_router(const struct net_bridge_vlan * v)720 static inline u8 br_vlan_multicast_router(const struct net_bridge_vlan *v)
721 {
722 u8 mcast_router = MDB_RTR_TYPE_DISABLED;
723
724 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
725 if (!br_vlan_is_master(v))
726 mcast_router = v->port_mcast_ctx.multicast_router;
727 else
728 mcast_router = v->br_mcast_ctx.multicast_router;
729 #endif
730
731 return mcast_router;
732 }
733
br_afspec_cmd_to_rtm(int cmd)734 static inline int br_afspec_cmd_to_rtm(int cmd)
735 {
736 switch (cmd) {
737 case RTM_SETLINK:
738 return RTM_NEWVLAN;
739 case RTM_DELLINK:
740 return RTM_DELVLAN;
741 }
742
743 return 0;
744 }
745
br_opt_get(const struct net_bridge * br,enum net_bridge_opts opt)746 static inline int br_opt_get(const struct net_bridge *br,
747 enum net_bridge_opts opt)
748 {
749 return test_bit(opt, &br->options);
750 }
751
752 int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
753 struct netlink_ext_ack *extack);
754 int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt);
755 int br_boolopt_multi_toggle(struct net_bridge *br,
756 struct br_boolopt_multi *bm,
757 struct netlink_ext_ack *extack);
758 void br_boolopt_multi_get(const struct net_bridge *br,
759 struct br_boolopt_multi *bm);
760 void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on);
761
762 #if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
br_tc_skb_miss_set(struct sk_buff * skb,bool miss)763 static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
764 {
765 struct tc_skb_ext *ext;
766
767 if (!tc_skb_ext_tc_enabled())
768 return;
769
770 ext = skb_ext_find(skb, TC_SKB_EXT);
771 if (ext) {
772 ext->l2_miss = miss;
773 return;
774 }
775 if (!miss)
776 return;
777 ext = tc_skb_ext_alloc(skb);
778 if (!ext)
779 return;
780 ext->l2_miss = true;
781 }
782 #else
br_tc_skb_miss_set(struct sk_buff * skb,bool miss)783 static inline void br_tc_skb_miss_set(struct sk_buff *skb, bool miss)
784 {
785 }
786 #endif
787
788 /* br_device.c */
789 void br_dev_setup(struct net_device *dev);
790 void br_dev_delete(struct net_device *dev, struct list_head *list);
791 netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
792 #ifdef CONFIG_NET_POLL_CONTROLLER
br_netpoll_send_skb(const struct net_bridge_port * p,struct sk_buff * skb)793 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
794 struct sk_buff *skb)
795 {
796 netpoll_send_skb(p->np, skb);
797 }
798
799 int br_netpoll_enable(struct net_bridge_port *p);
800 void br_netpoll_disable(struct net_bridge_port *p);
801 #else
br_netpoll_send_skb(const struct net_bridge_port * p,struct sk_buff * skb)802 static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
803 struct sk_buff *skb)
804 {
805 }
806
br_netpoll_enable(struct net_bridge_port * p)807 static inline int br_netpoll_enable(struct net_bridge_port *p)
808 {
809 return 0;
810 }
811
br_netpoll_disable(struct net_bridge_port * p)812 static inline void br_netpoll_disable(struct net_bridge_port *p)
813 {
814 }
815 #endif
816
817 /* br_fdb.c */
818 #define FDB_FLUSH_IGNORED_NDM_FLAGS (NTF_MASTER | NTF_SELF)
819 #define FDB_FLUSH_ALLOWED_NDM_STATES (NUD_PERMANENT | NUD_NOARP)
820 #define FDB_FLUSH_ALLOWED_NDM_FLAGS (NTF_USE | NTF_EXT_LEARNED | \
821 NTF_STICKY | NTF_OFFLOADED)
822
823 int br_fdb_init(void);
824 void br_fdb_fini(void);
825 int br_fdb_hash_init(struct net_bridge *br);
826 void br_fdb_hash_fini(struct net_bridge *br);
827 void br_fdb_flush(struct net_bridge *br,
828 const struct net_bridge_fdb_flush_desc *desc);
829 void br_fdb_find_delete_local(struct net_bridge *br,
830 const struct net_bridge_port *p,
831 const unsigned char *addr, u16 vid);
832 void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
833 void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
834 void br_fdb_cleanup(struct work_struct *work);
835 void br_fdb_delete_by_port(struct net_bridge *br,
836 const struct net_bridge_port *p, u16 vid, int do_all);
837 struct net_bridge_fdb_entry *br_fdb_find_rcu(struct net_bridge *br,
838 const unsigned char *addr,
839 __u16 vid);
840 int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
841 int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
842 unsigned long off);
843 int br_fdb_add_local(struct net_bridge *br, struct net_bridge_port *source,
844 const unsigned char *addr, u16 vid);
845 void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
846 const unsigned char *addr, u16 vid, unsigned long flags);
847
848 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
849 struct net_device *dev, const unsigned char *addr, u16 vid,
850 struct netlink_ext_ack *extack);
851 int br_fdb_delete_bulk(struct ndmsg *ndm, struct nlattr *tb[],
852 struct net_device *dev, u16 vid,
853 struct netlink_ext_ack *extack);
854 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
855 const unsigned char *addr, u16 vid, u16 nlh_flags,
856 struct netlink_ext_ack *extack);
857 int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
858 struct net_device *dev, struct net_device *fdev, int *idx);
859 int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
860 const unsigned char *addr, u16 vid, u32 portid, u32 seq,
861 struct netlink_ext_ack *extack);
862 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
863 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
864 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
865 const unsigned char *addr, u16 vid,
866 bool locked, bool swdev_notify);
867 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
868 const unsigned char *addr, u16 vid,
869 bool swdev_notify);
870 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
871 const unsigned char *addr, u16 vid, bool offloaded);
872
873 /* br_forward.c */
874 enum br_pkt_type {
875 BR_PKT_UNICAST,
876 BR_PKT_MULTICAST,
877 BR_PKT_BROADCAST
878 };
879 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
880 void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
881 bool local_rcv, bool local_orig);
882 int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
883 void br_flood(struct net_bridge *br, struct sk_buff *skb,
884 enum br_pkt_type pkt_type, bool local_rcv, bool local_orig,
885 u16 vid);
886
887 /* 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)888 static inline bool br_skb_isolated(const struct net_bridge_port *to,
889 const struct sk_buff *skb)
890 {
891 return BR_INPUT_SKB_CB(skb)->src_port_isolated &&
892 (to->flags & BR_ISOLATED);
893 }
894
895 /* br_if.c */
896 void br_port_carrier_check(struct net_bridge_port *p, bool *notified);
897 int br_add_bridge(struct net *net, const char *name);
898 int br_del_bridge(struct net *net, const char *name);
899 int br_add_if(struct net_bridge *br, struct net_device *dev,
900 struct netlink_ext_ack *extack);
901 int br_del_if(struct net_bridge *br, struct net_device *dev);
902 void br_mtu_auto_adjust(struct net_bridge *br);
903 netdev_features_t br_features_recompute(struct net_bridge *br,
904 netdev_features_t features);
905 void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
906 void br_manage_promisc(struct net_bridge *br);
907 int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev);
908
909 /* br_input.c */
910 int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
911 rx_handler_func_t *br_get_rx_handler(const struct net_device *dev);
912
913 struct br_frame_type {
914 __be16 type;
915 int (*frame_handler)(struct net_bridge_port *port,
916 struct sk_buff *skb);
917 struct hlist_node list;
918 };
919
920 void br_add_frame(struct net_bridge *br, struct br_frame_type *ft);
921 void br_del_frame(struct net_bridge *br, struct br_frame_type *ft);
922
br_rx_handler_check_rcu(const struct net_device * dev)923 static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
924 {
925 return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev);
926 }
927
br_rx_handler_check_rtnl(const struct net_device * dev)928 static inline bool br_rx_handler_check_rtnl(const struct net_device *dev)
929 {
930 return rcu_dereference_rtnl(dev->rx_handler) == br_get_rx_handler(dev);
931 }
932
br_port_get_check_rcu(const struct net_device * dev)933 static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
934 {
935 return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
936 }
937
938 static inline struct net_bridge_port *
br_port_get_check_rtnl(const struct net_device * dev)939 br_port_get_check_rtnl(const struct net_device *dev)
940 {
941 return br_rx_handler_check_rtnl(dev) ? br_port_get_rtnl_rcu(dev) : NULL;
942 }
943
944 /* br_ioctl.c */
945 int br_dev_siocdevprivate(struct net_device *dev, struct ifreq *rq,
946 void __user *data, int cmd);
947 int br_ioctl_stub(struct net *net, struct net_bridge *br, unsigned int cmd,
948 struct ifreq *ifr, void __user *uarg);
949
950 /* br_multicast.c */
951 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
952 int br_multicast_rcv(struct net_bridge_mcast **brmctx,
953 struct net_bridge_mcast_port **pmctx,
954 struct net_bridge_vlan *vlan,
955 struct sk_buff *skb, u16 vid);
956 struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx,
957 struct sk_buff *skb, u16 vid);
958 int br_multicast_add_port(struct net_bridge_port *port);
959 void br_multicast_del_port(struct net_bridge_port *port);
960 void br_multicast_enable_port(struct net_bridge_port *port);
961 void br_multicast_disable_port(struct net_bridge_port *port);
962 void br_multicast_init(struct net_bridge *br);
963 void br_multicast_join_snoopers(struct net_bridge *br);
964 void br_multicast_leave_snoopers(struct net_bridge *br);
965 void br_multicast_open(struct net_bridge *br);
966 void br_multicast_stop(struct net_bridge *br);
967 void br_multicast_dev_del(struct net_bridge *br);
968 void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct sk_buff *skb,
969 struct net_bridge_mcast *brmctx,
970 bool local_rcv, bool local_orig);
971 int br_multicast_set_router(struct net_bridge_mcast *brmctx, unsigned long val);
972 int br_multicast_set_port_router(struct net_bridge_mcast_port *pmctx,
973 unsigned long val);
974 int br_multicast_set_vlan_router(struct net_bridge_vlan *v, u8 mcast_router);
975 int br_multicast_toggle(struct net_bridge *br, unsigned long val,
976 struct netlink_ext_ack *extack);
977 int br_multicast_set_querier(struct net_bridge_mcast *brmctx, unsigned long val);
978 int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx,
979 unsigned long val);
980 #if IS_ENABLED(CONFIG_IPV6)
981 int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx,
982 unsigned long val);
983 #endif
984 struct net_bridge_mdb_entry *
985 br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst);
986 struct net_bridge_mdb_entry *
987 br_multicast_new_group(struct net_bridge *br, struct br_ip *group);
988 struct net_bridge_port_group *
989 br_multicast_new_port_group(struct net_bridge_port *port,
990 const struct br_ip *group,
991 struct net_bridge_port_group __rcu *next,
992 unsigned char flags, const unsigned char *src,
993 u8 filter_mode, u8 rt_protocol,
994 struct netlink_ext_ack *extack);
995 void br_multicast_del_port_group(struct net_bridge_port_group *p);
996 int br_mdb_hash_init(struct net_bridge *br);
997 void br_mdb_hash_fini(struct net_bridge *br);
998 void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
999 struct net_bridge_port_group *pg, int type);
1000 void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx,
1001 int type);
1002 void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
1003 struct net_bridge_port_group *pg,
1004 struct net_bridge_port_group __rcu **pp);
1005 void br_multicast_count(struct net_bridge *br,
1006 const struct net_bridge_port *p,
1007 const struct sk_buff *skb, u8 type, u8 dir);
1008 int br_multicast_init_stats(struct net_bridge *br);
1009 void br_multicast_uninit_stats(struct net_bridge *br);
1010 void br_multicast_get_stats(const struct net_bridge *br,
1011 const struct net_bridge_port *p,
1012 struct br_mcast_stats *dest);
1013 u32 br_multicast_ngroups_get(const struct net_bridge_mcast_port *pmctx);
1014 void br_multicast_ngroups_set_max(struct net_bridge_mcast_port *pmctx, u32 max);
1015 u32 br_multicast_ngroups_get_max(const struct net_bridge_mcast_port *pmctx);
1016 int br_mdb_add(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
1017 struct netlink_ext_ack *extack);
1018 int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
1019 struct netlink_ext_ack *extack);
1020 int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
1021 struct netlink_callback *cb);
1022 void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
1023 struct net_bridge_mdb_entry *mp, bool notify);
1024 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify);
1025 void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
1026 u8 filter_mode);
1027 void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
1028 struct net_bridge_port_group *sg);
1029 struct net_bridge_group_src *
1030 br_multicast_find_group_src(struct net_bridge_port_group *pg, struct br_ip *ip);
1031 struct net_bridge_group_src *
1032 br_multicast_new_group_src(struct net_bridge_port_group *pg,
1033 struct br_ip *src_ip);
1034 void __br_multicast_del_group_src(struct net_bridge_group_src *src);
1035 void br_multicast_del_group_src(struct net_bridge_group_src *src,
1036 bool fastleave);
1037 void br_multicast_ctx_init(struct net_bridge *br,
1038 struct net_bridge_vlan *vlan,
1039 struct net_bridge_mcast *brmctx);
1040 void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx);
1041 void br_multicast_port_ctx_init(struct net_bridge_port *port,
1042 struct net_bridge_vlan *vlan,
1043 struct net_bridge_mcast_port *pmctx);
1044 void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx);
1045 void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan, bool on);
1046 int br_multicast_toggle_vlan_snooping(struct net_bridge *br, bool on,
1047 struct netlink_ext_ack *extack);
1048 bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on);
1049
1050 int br_rports_fill_info(struct sk_buff *skb,
1051 const struct net_bridge_mcast *brmctx);
1052 int br_multicast_dump_querier_state(struct sk_buff *skb,
1053 const struct net_bridge_mcast *brmctx,
1054 int nest_attr);
1055 size_t br_multicast_querier_state_size(void);
1056 size_t br_rports_size(const struct net_bridge_mcast *brmctx);
1057 void br_multicast_set_query_intvl(struct net_bridge_mcast *brmctx,
1058 unsigned long val);
1059 void br_multicast_set_startup_query_intvl(struct net_bridge_mcast *brmctx,
1060 unsigned long val);
1061
br_group_is_l2(const struct br_ip * group)1062 static inline bool br_group_is_l2(const struct br_ip *group)
1063 {
1064 return group->proto == 0;
1065 }
1066
1067 #define mlock_dereference(X, br) \
1068 rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
1069
1070 static inline struct hlist_node *
br_multicast_get_first_rport_node(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1071 br_multicast_get_first_rport_node(struct net_bridge_mcast *brmctx,
1072 struct sk_buff *skb)
1073 {
1074 #if IS_ENABLED(CONFIG_IPV6)
1075 if (skb->protocol == htons(ETH_P_IPV6))
1076 return rcu_dereference(hlist_first_rcu(&brmctx->ip6_mc_router_list));
1077 #endif
1078 return rcu_dereference(hlist_first_rcu(&brmctx->ip4_mc_router_list));
1079 }
1080
1081 static inline struct net_bridge_port *
br_multicast_rport_from_node_skb(struct hlist_node * rp,struct sk_buff * skb)1082 br_multicast_rport_from_node_skb(struct hlist_node *rp, struct sk_buff *skb)
1083 {
1084 struct net_bridge_mcast_port *mctx;
1085
1086 #if IS_ENABLED(CONFIG_IPV6)
1087 if (skb->protocol == htons(ETH_P_IPV6))
1088 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
1089 ip6_rlist);
1090 else
1091 #endif
1092 mctx = hlist_entry_safe(rp, struct net_bridge_mcast_port,
1093 ip4_rlist);
1094
1095 if (mctx)
1096 return mctx->port;
1097 else
1098 return NULL;
1099 }
1100
br_ip4_multicast_is_router(struct net_bridge_mcast * brmctx)1101 static inline bool br_ip4_multicast_is_router(struct net_bridge_mcast *brmctx)
1102 {
1103 return timer_pending(&brmctx->ip4_mc_router_timer);
1104 }
1105
br_ip6_multicast_is_router(struct net_bridge_mcast * brmctx)1106 static inline bool br_ip6_multicast_is_router(struct net_bridge_mcast *brmctx)
1107 {
1108 #if IS_ENABLED(CONFIG_IPV6)
1109 return timer_pending(&brmctx->ip6_mc_router_timer);
1110 #else
1111 return false;
1112 #endif
1113 }
1114
1115 static inline bool
br_multicast_is_router(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1116 br_multicast_is_router(struct net_bridge_mcast *brmctx, struct sk_buff *skb)
1117 {
1118 switch (brmctx->multicast_router) {
1119 case MDB_RTR_TYPE_PERM:
1120 return true;
1121 case MDB_RTR_TYPE_TEMP_QUERY:
1122 if (skb) {
1123 if (skb->protocol == htons(ETH_P_IP))
1124 return br_ip4_multicast_is_router(brmctx);
1125 else if (skb->protocol == htons(ETH_P_IPV6))
1126 return br_ip6_multicast_is_router(brmctx);
1127 } else {
1128 return br_ip4_multicast_is_router(brmctx) ||
1129 br_ip6_multicast_is_router(brmctx);
1130 }
1131 fallthrough;
1132 default:
1133 return false;
1134 }
1135 }
1136
1137 static inline bool
__br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct bridge_mcast_other_query * querier,const bool is_ipv6)1138 __br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1139 struct bridge_mcast_other_query *querier,
1140 const bool is_ipv6)
1141 {
1142 bool own_querier_enabled;
1143
1144 if (brmctx->multicast_querier) {
1145 if (is_ipv6 && !br_opt_get(brmctx->br, BROPT_HAS_IPV6_ADDR))
1146 own_querier_enabled = false;
1147 else
1148 own_querier_enabled = true;
1149 } else {
1150 own_querier_enabled = false;
1151 }
1152
1153 return !timer_pending(&querier->delay_timer) &&
1154 (own_querier_enabled || timer_pending(&querier->timer));
1155 }
1156
br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct ethhdr * eth,const struct net_bridge_mdb_entry * mdb)1157 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1158 struct ethhdr *eth,
1159 const struct net_bridge_mdb_entry *mdb)
1160 {
1161 switch (eth->h_proto) {
1162 case (htons(ETH_P_IP)):
1163 return __br_multicast_querier_exists(brmctx,
1164 &brmctx->ip4_other_query, false);
1165 #if IS_ENABLED(CONFIG_IPV6)
1166 case (htons(ETH_P_IPV6)):
1167 return __br_multicast_querier_exists(brmctx,
1168 &brmctx->ip6_other_query, true);
1169 #endif
1170 default:
1171 return !!mdb && br_group_is_l2(&mdb->addr);
1172 }
1173 }
1174
br_multicast_is_star_g(const struct br_ip * ip)1175 static inline bool br_multicast_is_star_g(const struct br_ip *ip)
1176 {
1177 switch (ip->proto) {
1178 case htons(ETH_P_IP):
1179 return ipv4_is_zeronet(ip->src.ip4);
1180 #if IS_ENABLED(CONFIG_IPV6)
1181 case htons(ETH_P_IPV6):
1182 return ipv6_addr_any(&ip->src.ip6);
1183 #endif
1184 default:
1185 return false;
1186 }
1187 }
1188
1189 static inline bool
br_multicast_should_handle_mode(const struct net_bridge_mcast * brmctx,__be16 proto)1190 br_multicast_should_handle_mode(const struct net_bridge_mcast *brmctx,
1191 __be16 proto)
1192 {
1193 switch (proto) {
1194 case htons(ETH_P_IP):
1195 return !!(brmctx->multicast_igmp_version == 3);
1196 #if IS_ENABLED(CONFIG_IPV6)
1197 case htons(ETH_P_IPV6):
1198 return !!(brmctx->multicast_mld_version == 2);
1199 #endif
1200 default:
1201 return false;
1202 }
1203 }
1204
br_multicast_igmp_type(const struct sk_buff * skb)1205 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1206 {
1207 return BR_INPUT_SKB_CB(skb)->igmp;
1208 }
1209
br_multicast_lmqt(const struct net_bridge_mcast * brmctx)1210 static inline unsigned long br_multicast_lmqt(const struct net_bridge_mcast *brmctx)
1211 {
1212 return brmctx->multicast_last_member_interval *
1213 brmctx->multicast_last_member_count;
1214 }
1215
br_multicast_gmi(const struct net_bridge_mcast * brmctx)1216 static inline unsigned long br_multicast_gmi(const struct net_bridge_mcast *brmctx)
1217 {
1218 return brmctx->multicast_membership_interval;
1219 }
1220
1221 static inline bool
br_multicast_ctx_is_vlan(const struct net_bridge_mcast * brmctx)1222 br_multicast_ctx_is_vlan(const struct net_bridge_mcast *brmctx)
1223 {
1224 return !!brmctx->vlan;
1225 }
1226
1227 static inline bool
br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port * pmctx)1228 br_multicast_port_ctx_is_vlan(const struct net_bridge_mcast_port *pmctx)
1229 {
1230 return !!pmctx->vlan;
1231 }
1232
1233 static inline struct net_bridge_mcast *
br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port * pmctx)1234 br_multicast_port_ctx_get_global(const struct net_bridge_mcast_port *pmctx)
1235 {
1236 if (!br_multicast_port_ctx_is_vlan(pmctx))
1237 return &pmctx->port->br->multicast_ctx;
1238 else
1239 return &pmctx->vlan->brvlan->br_mcast_ctx;
1240 }
1241
1242 static inline bool
br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast * brmctx)1243 br_multicast_ctx_vlan_global_disabled(const struct net_bridge_mcast *brmctx)
1244 {
1245 return br_multicast_ctx_is_vlan(brmctx) &&
1246 (!br_opt_get(brmctx->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) ||
1247 !(brmctx->vlan->priv_flags & BR_VLFLAG_GLOBAL_MCAST_ENABLED));
1248 }
1249
1250 static inline bool
br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast * brmctx)1251 br_multicast_ctx_vlan_disabled(const struct net_bridge_mcast *brmctx)
1252 {
1253 return br_multicast_ctx_is_vlan(brmctx) &&
1254 !(brmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
1255 }
1256
1257 static inline bool
br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port * pmctx)1258 br_multicast_port_ctx_vlan_disabled(const struct net_bridge_mcast_port *pmctx)
1259 {
1260 return br_multicast_port_ctx_is_vlan(pmctx) &&
1261 !(pmctx->vlan->priv_flags & BR_VLFLAG_MCAST_ENABLED);
1262 }
1263
1264 static inline bool
br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port * pmctx)1265 br_multicast_port_ctx_state_disabled(const struct net_bridge_mcast_port *pmctx)
1266 {
1267 return pmctx->port->state == BR_STATE_DISABLED ||
1268 (br_multicast_port_ctx_is_vlan(pmctx) &&
1269 (br_multicast_port_ctx_vlan_disabled(pmctx) ||
1270 pmctx->vlan->state == BR_STATE_DISABLED));
1271 }
1272
1273 static inline bool
br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port * pmctx)1274 br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx)
1275 {
1276 return br_multicast_port_ctx_state_disabled(pmctx) ||
1277 pmctx->port->state == BR_STATE_BLOCKING ||
1278 (br_multicast_port_ctx_is_vlan(pmctx) &&
1279 pmctx->vlan->state == BR_STATE_BLOCKING);
1280 }
1281
1282 static inline bool
br_rports_have_mc_router(const struct net_bridge_mcast * brmctx)1283 br_rports_have_mc_router(const struct net_bridge_mcast *brmctx)
1284 {
1285 #if IS_ENABLED(CONFIG_IPV6)
1286 return !hlist_empty(&brmctx->ip4_mc_router_list) ||
1287 !hlist_empty(&brmctx->ip6_mc_router_list);
1288 #else
1289 return !hlist_empty(&brmctx->ip4_mc_router_list);
1290 #endif
1291 }
1292
1293 static inline bool
br_multicast_ctx_options_equal(const struct net_bridge_mcast * brmctx1,const struct net_bridge_mcast * brmctx2)1294 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
1295 const struct net_bridge_mcast *brmctx2)
1296 {
1297 return brmctx1->multicast_igmp_version ==
1298 brmctx2->multicast_igmp_version &&
1299 brmctx1->multicast_last_member_count ==
1300 brmctx2->multicast_last_member_count &&
1301 brmctx1->multicast_startup_query_count ==
1302 brmctx2->multicast_startup_query_count &&
1303 brmctx1->multicast_last_member_interval ==
1304 brmctx2->multicast_last_member_interval &&
1305 brmctx1->multicast_membership_interval ==
1306 brmctx2->multicast_membership_interval &&
1307 brmctx1->multicast_querier_interval ==
1308 brmctx2->multicast_querier_interval &&
1309 brmctx1->multicast_query_interval ==
1310 brmctx2->multicast_query_interval &&
1311 brmctx1->multicast_query_response_interval ==
1312 brmctx2->multicast_query_response_interval &&
1313 brmctx1->multicast_startup_query_interval ==
1314 brmctx2->multicast_startup_query_interval &&
1315 brmctx1->multicast_querier == brmctx2->multicast_querier &&
1316 brmctx1->multicast_router == brmctx2->multicast_router &&
1317 !br_rports_have_mc_router(brmctx1) &&
1318 !br_rports_have_mc_router(brmctx2) &&
1319 #if IS_ENABLED(CONFIG_IPV6)
1320 brmctx1->multicast_mld_version ==
1321 brmctx2->multicast_mld_version &&
1322 #endif
1323 true;
1324 }
1325
1326 static inline bool
br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast * brmctx)1327 br_multicast_ctx_matches_vlan_snooping(const struct net_bridge_mcast *brmctx)
1328 {
1329 bool vlan_snooping_enabled;
1330
1331 vlan_snooping_enabled = !!br_opt_get(brmctx->br,
1332 BROPT_MCAST_VLAN_SNOOPING_ENABLED);
1333
1334 return !!(vlan_snooping_enabled == br_multicast_ctx_is_vlan(brmctx));
1335 }
1336 #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)1337 static inline int br_multicast_rcv(struct net_bridge_mcast **brmctx,
1338 struct net_bridge_mcast_port **pmctx,
1339 struct net_bridge_vlan *vlan,
1340 struct sk_buff *skb,
1341 u16 vid)
1342 {
1343 return 0;
1344 }
1345
br_mdb_get(struct net_bridge_mcast * brmctx,struct sk_buff * skb,u16 vid)1346 static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx,
1347 struct sk_buff *skb, u16 vid)
1348 {
1349 return NULL;
1350 }
1351
br_multicast_add_port(struct net_bridge_port * port)1352 static inline int br_multicast_add_port(struct net_bridge_port *port)
1353 {
1354 return 0;
1355 }
1356
br_multicast_del_port(struct net_bridge_port * port)1357 static inline void br_multicast_del_port(struct net_bridge_port *port)
1358 {
1359 }
1360
br_multicast_enable_port(struct net_bridge_port * port)1361 static inline void br_multicast_enable_port(struct net_bridge_port *port)
1362 {
1363 }
1364
br_multicast_disable_port(struct net_bridge_port * port)1365 static inline void br_multicast_disable_port(struct net_bridge_port *port)
1366 {
1367 }
1368
br_multicast_init(struct net_bridge * br)1369 static inline void br_multicast_init(struct net_bridge *br)
1370 {
1371 }
1372
br_multicast_join_snoopers(struct net_bridge * br)1373 static inline void br_multicast_join_snoopers(struct net_bridge *br)
1374 {
1375 }
1376
br_multicast_leave_snoopers(struct net_bridge * br)1377 static inline void br_multicast_leave_snoopers(struct net_bridge *br)
1378 {
1379 }
1380
br_multicast_open(struct net_bridge * br)1381 static inline void br_multicast_open(struct net_bridge *br)
1382 {
1383 }
1384
br_multicast_stop(struct net_bridge * br)1385 static inline void br_multicast_stop(struct net_bridge *br)
1386 {
1387 }
1388
br_multicast_dev_del(struct net_bridge * br)1389 static inline void br_multicast_dev_del(struct net_bridge *br)
1390 {
1391 }
1392
br_multicast_flood(struct net_bridge_mdb_entry * mdst,struct sk_buff * skb,struct net_bridge_mcast * brmctx,bool local_rcv,bool local_orig)1393 static inline void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
1394 struct sk_buff *skb,
1395 struct net_bridge_mcast *brmctx,
1396 bool local_rcv, bool local_orig)
1397 {
1398 }
1399
br_multicast_is_router(struct net_bridge_mcast * brmctx,struct sk_buff * skb)1400 static inline bool br_multicast_is_router(struct net_bridge_mcast *brmctx,
1401 struct sk_buff *skb)
1402 {
1403 return false;
1404 }
1405
br_multicast_querier_exists(struct net_bridge_mcast * brmctx,struct ethhdr * eth,const struct net_bridge_mdb_entry * mdb)1406 static inline bool br_multicast_querier_exists(struct net_bridge_mcast *brmctx,
1407 struct ethhdr *eth,
1408 const struct net_bridge_mdb_entry *mdb)
1409 {
1410 return false;
1411 }
1412
br_mdb_add(struct net_device * dev,struct nlattr * tb[],u16 nlmsg_flags,struct netlink_ext_ack * extack)1413 static inline int br_mdb_add(struct net_device *dev, struct nlattr *tb[],
1414 u16 nlmsg_flags, struct netlink_ext_ack *extack)
1415 {
1416 return -EOPNOTSUPP;
1417 }
1418
br_mdb_del(struct net_device * dev,struct nlattr * tb[],struct netlink_ext_ack * extack)1419 static inline int br_mdb_del(struct net_device *dev, struct nlattr *tb[],
1420 struct netlink_ext_ack *extack)
1421 {
1422 return -EOPNOTSUPP;
1423 }
1424
br_mdb_dump(struct net_device * dev,struct sk_buff * skb,struct netlink_callback * cb)1425 static inline int br_mdb_dump(struct net_device *dev, struct sk_buff *skb,
1426 struct netlink_callback *cb)
1427 {
1428 return 0;
1429 }
1430
br_mdb_hash_init(struct net_bridge * br)1431 static inline int br_mdb_hash_init(struct net_bridge *br)
1432 {
1433 return 0;
1434 }
1435
br_mdb_hash_fini(struct net_bridge * br)1436 static inline void br_mdb_hash_fini(struct net_bridge *br)
1437 {
1438 }
1439
br_multicast_count(struct net_bridge * br,const struct net_bridge_port * p,const struct sk_buff * skb,u8 type,u8 dir)1440 static inline void br_multicast_count(struct net_bridge *br,
1441 const struct net_bridge_port *p,
1442 const struct sk_buff *skb,
1443 u8 type, u8 dir)
1444 {
1445 }
1446
br_multicast_init_stats(struct net_bridge * br)1447 static inline int br_multicast_init_stats(struct net_bridge *br)
1448 {
1449 return 0;
1450 }
1451
br_multicast_uninit_stats(struct net_bridge * br)1452 static inline void br_multicast_uninit_stats(struct net_bridge *br)
1453 {
1454 }
1455
br_multicast_igmp_type(const struct sk_buff * skb)1456 static inline int br_multicast_igmp_type(const struct sk_buff *skb)
1457 {
1458 return 0;
1459 }
1460
br_multicast_ctx_init(struct net_bridge * br,struct net_bridge_vlan * vlan,struct net_bridge_mcast * brmctx)1461 static inline void br_multicast_ctx_init(struct net_bridge *br,
1462 struct net_bridge_vlan *vlan,
1463 struct net_bridge_mcast *brmctx)
1464 {
1465 }
1466
br_multicast_ctx_deinit(struct net_bridge_mcast * brmctx)1467 static inline void br_multicast_ctx_deinit(struct net_bridge_mcast *brmctx)
1468 {
1469 }
1470
br_multicast_port_ctx_init(struct net_bridge_port * port,struct net_bridge_vlan * vlan,struct net_bridge_mcast_port * pmctx)1471 static inline void br_multicast_port_ctx_init(struct net_bridge_port *port,
1472 struct net_bridge_vlan *vlan,
1473 struct net_bridge_mcast_port *pmctx)
1474 {
1475 }
1476
br_multicast_port_ctx_deinit(struct net_bridge_mcast_port * pmctx)1477 static inline void br_multicast_port_ctx_deinit(struct net_bridge_mcast_port *pmctx)
1478 {
1479 }
1480
br_multicast_toggle_one_vlan(struct net_bridge_vlan * vlan,bool on)1481 static inline void br_multicast_toggle_one_vlan(struct net_bridge_vlan *vlan,
1482 bool on)
1483 {
1484 }
1485
br_multicast_toggle_vlan_snooping(struct net_bridge * br,bool on,struct netlink_ext_ack * extack)1486 static inline int br_multicast_toggle_vlan_snooping(struct net_bridge *br,
1487 bool on,
1488 struct netlink_ext_ack *extack)
1489 {
1490 return -EOPNOTSUPP;
1491 }
1492
br_multicast_toggle_global_vlan(struct net_bridge_vlan * vlan,bool on)1493 static inline bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan,
1494 bool on)
1495 {
1496 return false;
1497 }
1498
1499 static inline bool
br_multicast_ctx_options_equal(const struct net_bridge_mcast * brmctx1,const struct net_bridge_mcast * brmctx2)1500 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
1501 const struct net_bridge_mcast *brmctx2)
1502 {
1503 return true;
1504 }
1505 #endif
1506
1507 /* br_vlan.c */
1508 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1509 bool br_allowed_ingress(const struct net_bridge *br,
1510 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
1511 u16 *vid, u8 *state,
1512 struct net_bridge_vlan **vlan);
1513 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1514 const struct sk_buff *skb);
1515 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
1516 struct sk_buff *br_handle_vlan(struct net_bridge *br,
1517 const struct net_bridge_port *port,
1518 struct net_bridge_vlan_group *vg,
1519 struct sk_buff *skb);
1520 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1521 bool *changed, struct netlink_ext_ack *extack);
1522 int br_vlan_delete(struct net_bridge *br, u16 vid);
1523 void br_vlan_flush(struct net_bridge *br);
1524 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
1525 void br_recalculate_fwd_mask(struct net_bridge *br);
1526 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val,
1527 struct netlink_ext_ack *extack);
1528 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto,
1529 struct netlink_ext_ack *extack);
1530 int br_vlan_set_proto(struct net_bridge *br, unsigned long val,
1531 struct netlink_ext_ack *extack);
1532 int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
1533 int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val);
1534 int br_vlan_init(struct net_bridge *br);
1535 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val,
1536 struct netlink_ext_ack *extack);
1537 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
1538 struct netlink_ext_ack *extack);
1539 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1540 bool *changed, struct netlink_ext_ack *extack);
1541 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
1542 void nbp_vlan_flush(struct net_bridge_port *port);
1543 int nbp_vlan_init(struct net_bridge_port *port, struct netlink_ext_ack *extack);
1544 int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
1545 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1546 struct pcpu_sw_netstats *stats);
1547 void br_vlan_port_event(struct net_bridge_port *p, unsigned long event);
1548 int br_vlan_bridge_event(struct net_device *dev, unsigned long event,
1549 void *ptr);
1550 void br_vlan_rtnl_init(void);
1551 void br_vlan_rtnl_uninit(void);
1552 void br_vlan_notify(const struct net_bridge *br,
1553 const struct net_bridge_port *p,
1554 u16 vid, u16 vid_range,
1555 int cmd);
1556 bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1557 const struct net_bridge_vlan *range_end);
1558
1559 void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1560 struct net_device_path_ctx *ctx,
1561 struct net_device_path *path);
1562 int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1563 struct net_bridge_port *dst,
1564 struct net_device_path *path);
1565
br_vlan_group(const struct net_bridge * br)1566 static inline struct net_bridge_vlan_group *br_vlan_group(
1567 const struct net_bridge *br)
1568 {
1569 return rtnl_dereference(br->vlgrp);
1570 }
1571
nbp_vlan_group(const struct net_bridge_port * p)1572 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1573 const struct net_bridge_port *p)
1574 {
1575 return rtnl_dereference(p->vlgrp);
1576 }
1577
br_vlan_group_rcu(const struct net_bridge * br)1578 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1579 const struct net_bridge *br)
1580 {
1581 return rcu_dereference(br->vlgrp);
1582 }
1583
nbp_vlan_group_rcu(const struct net_bridge_port * p)1584 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1585 const struct net_bridge_port *p)
1586 {
1587 return rcu_dereference(p->vlgrp);
1588 }
1589
1590 /* Since bridge now depends on 8021Q module, but the time bridge sees the
1591 * skb, the vlan tag will always be present if the frame was tagged.
1592 */
br_vlan_get_tag(const struct sk_buff * skb,u16 * vid)1593 static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
1594 {
1595 int err = 0;
1596
1597 if (skb_vlan_tag_present(skb)) {
1598 *vid = skb_vlan_tag_get_id(skb);
1599 } else {
1600 *vid = 0;
1601 err = -EINVAL;
1602 }
1603
1604 return err;
1605 }
1606
br_get_pvid(const struct net_bridge_vlan_group * vg)1607 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1608 {
1609 if (!vg)
1610 return 0;
1611
1612 smp_rmb();
1613 return vg->pvid;
1614 }
1615
br_vlan_flags(const struct net_bridge_vlan * v,u16 pvid)1616 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1617 {
1618 return v->vid == pvid ? v->flags | BRIDGE_VLAN_INFO_PVID : v->flags;
1619 }
1620 #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)1621 static inline bool br_allowed_ingress(const struct net_bridge *br,
1622 struct net_bridge_vlan_group *vg,
1623 struct sk_buff *skb,
1624 u16 *vid, u8 *state,
1625 struct net_bridge_vlan **vlan)
1626
1627 {
1628 *vlan = NULL;
1629 return true;
1630 }
1631
br_allowed_egress(struct net_bridge_vlan_group * vg,const struct sk_buff * skb)1632 static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
1633 const struct sk_buff *skb)
1634 {
1635 return true;
1636 }
1637
br_should_learn(struct net_bridge_port * p,struct sk_buff * skb,u16 * vid)1638 static inline bool br_should_learn(struct net_bridge_port *p,
1639 struct sk_buff *skb, u16 *vid)
1640 {
1641 return true;
1642 }
1643
br_handle_vlan(struct net_bridge * br,const struct net_bridge_port * port,struct net_bridge_vlan_group * vg,struct sk_buff * skb)1644 static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
1645 const struct net_bridge_port *port,
1646 struct net_bridge_vlan_group *vg,
1647 struct sk_buff *skb)
1648 {
1649 return skb;
1650 }
1651
br_vlan_add(struct net_bridge * br,u16 vid,u16 flags,bool * changed,struct netlink_ext_ack * extack)1652 static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags,
1653 bool *changed, struct netlink_ext_ack *extack)
1654 {
1655 *changed = false;
1656 return -EOPNOTSUPP;
1657 }
1658
br_vlan_delete(struct net_bridge * br,u16 vid)1659 static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
1660 {
1661 return -EOPNOTSUPP;
1662 }
1663
br_vlan_flush(struct net_bridge * br)1664 static inline void br_vlan_flush(struct net_bridge *br)
1665 {
1666 }
1667
br_recalculate_fwd_mask(struct net_bridge * br)1668 static inline void br_recalculate_fwd_mask(struct net_bridge *br)
1669 {
1670 }
1671
br_vlan_init(struct net_bridge * br)1672 static inline int br_vlan_init(struct net_bridge *br)
1673 {
1674 return 0;
1675 }
1676
nbp_vlan_add(struct net_bridge_port * port,u16 vid,u16 flags,bool * changed,struct netlink_ext_ack * extack)1677 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1678 bool *changed, struct netlink_ext_ack *extack)
1679 {
1680 *changed = false;
1681 return -EOPNOTSUPP;
1682 }
1683
nbp_vlan_delete(struct net_bridge_port * port,u16 vid)1684 static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1685 {
1686 return -EOPNOTSUPP;
1687 }
1688
nbp_vlan_flush(struct net_bridge_port * port)1689 static inline void nbp_vlan_flush(struct net_bridge_port *port)
1690 {
1691 }
1692
br_vlan_find(struct net_bridge_vlan_group * vg,u16 vid)1693 static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
1694 u16 vid)
1695 {
1696 return NULL;
1697 }
1698
nbp_vlan_init(struct net_bridge_port * port,struct netlink_ext_ack * extack)1699 static inline int nbp_vlan_init(struct net_bridge_port *port,
1700 struct netlink_ext_ack *extack)
1701 {
1702 return 0;
1703 }
1704
br_vlan_get_tag(const struct sk_buff * skb,u16 * tag)1705 static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
1706 {
1707 return 0;
1708 }
1709
br_get_pvid(const struct net_bridge_vlan_group * vg)1710 static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
1711 {
1712 return 0;
1713 }
1714
br_vlan_filter_toggle(struct net_bridge * br,unsigned long val,struct netlink_ext_ack * extack)1715 static inline int br_vlan_filter_toggle(struct net_bridge *br,
1716 unsigned long val,
1717 struct netlink_ext_ack *extack)
1718 {
1719 return -EOPNOTSUPP;
1720 }
1721
nbp_get_num_vlan_infos(struct net_bridge_port * p,u32 filter_mask)1722 static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
1723 u32 filter_mask)
1724 {
1725 return 0;
1726 }
1727
br_vlan_fill_forward_path_pvid(struct net_bridge * br,struct net_device_path_ctx * ctx,struct net_device_path * path)1728 static inline void br_vlan_fill_forward_path_pvid(struct net_bridge *br,
1729 struct net_device_path_ctx *ctx,
1730 struct net_device_path *path)
1731 {
1732 }
1733
br_vlan_fill_forward_path_mode(struct net_bridge * br,struct net_bridge_port * dst,struct net_device_path * path)1734 static inline int br_vlan_fill_forward_path_mode(struct net_bridge *br,
1735 struct net_bridge_port *dst,
1736 struct net_device_path *path)
1737 {
1738 return 0;
1739 }
1740
br_vlan_group(const struct net_bridge * br)1741 static inline struct net_bridge_vlan_group *br_vlan_group(
1742 const struct net_bridge *br)
1743 {
1744 return NULL;
1745 }
1746
nbp_vlan_group(const struct net_bridge_port * p)1747 static inline struct net_bridge_vlan_group *nbp_vlan_group(
1748 const struct net_bridge_port *p)
1749 {
1750 return NULL;
1751 }
1752
br_vlan_group_rcu(const struct net_bridge * br)1753 static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
1754 const struct net_bridge *br)
1755 {
1756 return NULL;
1757 }
1758
nbp_vlan_group_rcu(const struct net_bridge_port * p)1759 static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
1760 const struct net_bridge_port *p)
1761 {
1762 return NULL;
1763 }
1764
br_vlan_get_stats(const struct net_bridge_vlan * v,struct pcpu_sw_netstats * stats)1765 static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
1766 struct pcpu_sw_netstats *stats)
1767 {
1768 }
1769
br_vlan_port_event(struct net_bridge_port * p,unsigned long event)1770 static inline void br_vlan_port_event(struct net_bridge_port *p,
1771 unsigned long event)
1772 {
1773 }
1774
br_vlan_bridge_event(struct net_device * dev,unsigned long event,void * ptr)1775 static inline int br_vlan_bridge_event(struct net_device *dev,
1776 unsigned long event, void *ptr)
1777 {
1778 return 0;
1779 }
1780
br_vlan_rtnl_init(void)1781 static inline void br_vlan_rtnl_init(void)
1782 {
1783 }
1784
br_vlan_rtnl_uninit(void)1785 static inline void br_vlan_rtnl_uninit(void)
1786 {
1787 }
1788
br_vlan_notify(const struct net_bridge * br,const struct net_bridge_port * p,u16 vid,u16 vid_range,int cmd)1789 static inline void br_vlan_notify(const struct net_bridge *br,
1790 const struct net_bridge_port *p,
1791 u16 vid, u16 vid_range,
1792 int cmd)
1793 {
1794 }
1795
br_vlan_can_enter_range(const struct net_bridge_vlan * v_curr,const struct net_bridge_vlan * range_end)1796 static inline bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
1797 const struct net_bridge_vlan *range_end)
1798 {
1799 return true;
1800 }
1801
br_vlan_flags(const struct net_bridge_vlan * v,u16 pvid)1802 static inline u16 br_vlan_flags(const struct net_bridge_vlan *v, u16 pvid)
1803 {
1804 return 0;
1805 }
1806
1807 #endif
1808
1809 /* br_vlan_options.c */
1810 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1811 bool br_vlan_opts_eq_range(const struct net_bridge_vlan *v_curr,
1812 const struct net_bridge_vlan *range_end);
1813 bool br_vlan_opts_fill(struct sk_buff *skb, const struct net_bridge_vlan *v,
1814 const struct net_bridge_port *p);
1815 size_t br_vlan_opts_nl_size(void);
1816 int br_vlan_process_options(const struct net_bridge *br,
1817 const struct net_bridge_port *p,
1818 struct net_bridge_vlan *range_start,
1819 struct net_bridge_vlan *range_end,
1820 struct nlattr **tb,
1821 struct netlink_ext_ack *extack);
1822 int br_vlan_rtm_process_global_options(struct net_device *dev,
1823 const struct nlattr *attr,
1824 int cmd,
1825 struct netlink_ext_ack *extack);
1826 bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
1827 const struct net_bridge_vlan *r_end);
1828 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
1829 const struct net_bridge_vlan *v_opts);
1830
1831 /* vlan state manipulation helpers using *_ONCE to annotate lock-free access */
br_vlan_get_state(const struct net_bridge_vlan * v)1832 static inline u8 br_vlan_get_state(const struct net_bridge_vlan *v)
1833 {
1834 return READ_ONCE(v->state);
1835 }
1836
br_vlan_set_state(struct net_bridge_vlan * v,u8 state)1837 static inline void br_vlan_set_state(struct net_bridge_vlan *v, u8 state)
1838 {
1839 WRITE_ONCE(v->state, state);
1840 }
1841
br_vlan_get_pvid_state(const struct net_bridge_vlan_group * vg)1842 static inline u8 br_vlan_get_pvid_state(const struct net_bridge_vlan_group *vg)
1843 {
1844 return READ_ONCE(vg->pvid_state);
1845 }
1846
br_vlan_set_pvid_state(struct net_bridge_vlan_group * vg,u8 state)1847 static inline void br_vlan_set_pvid_state(struct net_bridge_vlan_group *vg,
1848 u8 state)
1849 {
1850 WRITE_ONCE(vg->pvid_state, state);
1851 }
1852
1853 /* learn_allow is true at ingress and false at egress */
br_vlan_state_allowed(u8 state,bool learn_allow)1854 static inline bool br_vlan_state_allowed(u8 state, bool learn_allow)
1855 {
1856 switch (state) {
1857 case BR_STATE_LEARNING:
1858 return learn_allow;
1859 case BR_STATE_FORWARDING:
1860 return true;
1861 default:
1862 return false;
1863 }
1864 }
1865 #endif
1866
1867 /* br_mst.c */
1868 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
1869 DECLARE_STATIC_KEY_FALSE(br_mst_used);
br_mst_is_enabled(struct net_bridge * br)1870 static inline bool br_mst_is_enabled(struct net_bridge *br)
1871 {
1872 return static_branch_unlikely(&br_mst_used) &&
1873 br_opt_get(br, BROPT_MST_ENABLED);
1874 }
1875
1876 int br_mst_set_state(struct net_bridge_port *p, u16 msti, u8 state,
1877 struct netlink_ext_ack *extack);
1878 int br_mst_vlan_set_msti(struct net_bridge_vlan *v, u16 msti);
1879 void br_mst_vlan_init_state(struct net_bridge_vlan *v);
1880 int br_mst_set_enabled(struct net_bridge *br, bool on,
1881 struct netlink_ext_ack *extack);
1882 size_t br_mst_info_size(const struct net_bridge_vlan_group *vg);
1883 int br_mst_fill_info(struct sk_buff *skb,
1884 const struct net_bridge_vlan_group *vg);
1885 int br_mst_process(struct net_bridge_port *p, const struct nlattr *mst_attr,
1886 struct netlink_ext_ack *extack);
1887 #else
br_mst_is_enabled(struct net_bridge * br)1888 static inline bool br_mst_is_enabled(struct net_bridge *br)
1889 {
1890 return false;
1891 }
1892
br_mst_set_state(struct net_bridge_port * p,u16 msti,u8 state,struct netlink_ext_ack * extack)1893 static inline int br_mst_set_state(struct net_bridge_port *p, u16 msti,
1894 u8 state, struct netlink_ext_ack *extack)
1895 {
1896 return -EOPNOTSUPP;
1897 }
1898
br_mst_set_enabled(struct net_bridge * br,bool on,struct netlink_ext_ack * extack)1899 static inline int br_mst_set_enabled(struct net_bridge *br, bool on,
1900 struct netlink_ext_ack *extack)
1901 {
1902 return -EOPNOTSUPP;
1903 }
1904
br_mst_info_size(const struct net_bridge_vlan_group * vg)1905 static inline size_t br_mst_info_size(const struct net_bridge_vlan_group *vg)
1906 {
1907 return 0;
1908 }
1909
br_mst_fill_info(struct sk_buff * skb,const struct net_bridge_vlan_group * vg)1910 static inline int br_mst_fill_info(struct sk_buff *skb,
1911 const struct net_bridge_vlan_group *vg)
1912 {
1913 return -EOPNOTSUPP;
1914 }
1915
br_mst_process(struct net_bridge_port * p,const struct nlattr * mst_attr,struct netlink_ext_ack * extack)1916 static inline int br_mst_process(struct net_bridge_port *p,
1917 const struct nlattr *mst_attr,
1918 struct netlink_ext_ack *extack)
1919 {
1920 return -EOPNOTSUPP;
1921 }
1922 #endif
1923
1924 struct nf_br_ops {
1925 int (*br_dev_xmit_hook)(struct sk_buff *skb);
1926 };
1927 extern const struct nf_br_ops __rcu *nf_br_ops;
1928
1929 /* br_netfilter.c */
1930 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
1931 int br_nf_core_init(void);
1932 void br_nf_core_fini(void);
1933 void br_netfilter_rtable_init(struct net_bridge *);
1934 #else
br_nf_core_init(void)1935 static inline int br_nf_core_init(void) { return 0; }
br_nf_core_fini(void)1936 static inline void br_nf_core_fini(void) {}
1937 #define br_netfilter_rtable_init(x)
1938 #endif
1939
1940 /* br_stp.c */
1941 void br_set_state(struct net_bridge_port *p, unsigned int state);
1942 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
1943 void br_init_port(struct net_bridge_port *p);
1944 void br_become_designated_port(struct net_bridge_port *p);
1945
1946 void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
1947 int br_set_forward_delay(struct net_bridge *br, unsigned long x);
1948 int br_set_hello_time(struct net_bridge *br, unsigned long x);
1949 int br_set_max_age(struct net_bridge *br, unsigned long x);
1950 int __set_ageing_time(struct net_device *dev, unsigned long t);
1951 int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time);
1952
1953
1954 /* br_stp_if.c */
1955 void br_stp_enable_bridge(struct net_bridge *br);
1956 void br_stp_disable_bridge(struct net_bridge *br);
1957 int br_stp_set_enabled(struct net_bridge *br, unsigned long val,
1958 struct netlink_ext_ack *extack);
1959 void br_stp_enable_port(struct net_bridge_port *p);
1960 void br_stp_disable_port(struct net_bridge_port *p);
1961 bool br_stp_recalculate_bridge_id(struct net_bridge *br);
1962 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1963 void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
1964 int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
1965 int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
1966 ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
1967
1968 /* br_stp_bpdu.c */
1969 struct stp_proto;
1970 void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
1971 struct net_device *dev);
1972
1973 /* br_stp_timer.c */
1974 void br_stp_timer_init(struct net_bridge *br);
1975 void br_stp_port_timer_init(struct net_bridge_port *p);
1976 unsigned long br_timer_value(const struct timer_list *timer);
1977
1978 /* br.c */
1979 #if IS_ENABLED(CONFIG_ATM_LANE)
1980 extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
1981 #endif
1982
1983 /* br_mrp.c */
1984 #if IS_ENABLED(CONFIG_BRIDGE_MRP)
1985 int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1986 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
1987 bool br_mrp_enabled(struct net_bridge *br);
1988 void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
1989 int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
1990 #else
br_mrp_parse(struct net_bridge * br,struct net_bridge_port * p,struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)1991 static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
1992 struct nlattr *attr, int cmd,
1993 struct netlink_ext_ack *extack)
1994 {
1995 return -EOPNOTSUPP;
1996 }
1997
br_mrp_enabled(struct net_bridge * br)1998 static inline bool br_mrp_enabled(struct net_bridge *br)
1999 {
2000 return false;
2001 }
2002
br_mrp_port_del(struct net_bridge * br,struct net_bridge_port * p)2003 static inline void br_mrp_port_del(struct net_bridge *br,
2004 struct net_bridge_port *p)
2005 {
2006 }
2007
br_mrp_fill_info(struct sk_buff * skb,struct net_bridge * br)2008 static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
2009 {
2010 return 0;
2011 }
2012
2013 #endif
2014
2015 /* br_cfm.c */
2016 #if IS_ENABLED(CONFIG_BRIDGE_CFM)
2017 int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
2018 struct nlattr *attr, int cmd, struct netlink_ext_ack *extack);
2019 bool br_cfm_created(struct net_bridge *br);
2020 void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p);
2021 int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br);
2022 int br_cfm_status_fill_info(struct sk_buff *skb,
2023 struct net_bridge *br,
2024 bool getlink);
2025 int br_cfm_mep_count(struct net_bridge *br, u32 *count);
2026 int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count);
2027 #else
br_cfm_parse(struct net_bridge * br,struct net_bridge_port * p,struct nlattr * attr,int cmd,struct netlink_ext_ack * extack)2028 static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p,
2029 struct nlattr *attr, int cmd,
2030 struct netlink_ext_ack *extack)
2031 {
2032 return -EOPNOTSUPP;
2033 }
2034
br_cfm_created(struct net_bridge * br)2035 static inline bool br_cfm_created(struct net_bridge *br)
2036 {
2037 return false;
2038 }
2039
br_cfm_port_del(struct net_bridge * br,struct net_bridge_port * p)2040 static inline void br_cfm_port_del(struct net_bridge *br,
2041 struct net_bridge_port *p)
2042 {
2043 }
2044
br_cfm_config_fill_info(struct sk_buff * skb,struct net_bridge * br)2045 static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br)
2046 {
2047 return -EOPNOTSUPP;
2048 }
2049
br_cfm_status_fill_info(struct sk_buff * skb,struct net_bridge * br,bool getlink)2050 static inline int br_cfm_status_fill_info(struct sk_buff *skb,
2051 struct net_bridge *br,
2052 bool getlink)
2053 {
2054 return -EOPNOTSUPP;
2055 }
2056
br_cfm_mep_count(struct net_bridge * br,u32 * count)2057 static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count)
2058 {
2059 *count = 0;
2060 return -EOPNOTSUPP;
2061 }
2062
br_cfm_peer_mep_count(struct net_bridge * br,u32 * count)2063 static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count)
2064 {
2065 *count = 0;
2066 return -EOPNOTSUPP;
2067 }
2068 #endif
2069
2070 /* br_netlink.c */
2071 extern struct rtnl_link_ops br_link_ops;
2072 int br_netlink_init(void);
2073 void br_netlink_fini(void);
2074 void br_ifinfo_notify(int event, const struct net_bridge *br,
2075 const struct net_bridge_port *port);
2076 void br_info_notify(int event, const struct net_bridge *br,
2077 const struct net_bridge_port *port, u32 filter);
2078 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags,
2079 struct netlink_ext_ack *extack);
2080 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
2081 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
2082 u32 filter_mask, int nlflags);
2083 int br_process_vlan_info(struct net_bridge *br,
2084 struct net_bridge_port *p, int cmd,
2085 struct bridge_vlan_info *vinfo_curr,
2086 struct bridge_vlan_info **vinfo_last,
2087 bool *changed,
2088 struct netlink_ext_ack *extack);
2089
2090 #ifdef CONFIG_SYSFS
2091 /* br_sysfs_if.c */
2092 extern const struct sysfs_ops brport_sysfs_ops;
2093 int br_sysfs_addif(struct net_bridge_port *p);
2094 int br_sysfs_renameif(struct net_bridge_port *p);
2095
2096 /* br_sysfs_br.c */
2097 int br_sysfs_addbr(struct net_device *dev);
2098 void br_sysfs_delbr(struct net_device *dev);
2099
2100 #else
2101
br_sysfs_addif(struct net_bridge_port * p)2102 static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
br_sysfs_renameif(struct net_bridge_port * p)2103 static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
br_sysfs_addbr(struct net_device * dev)2104 static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
br_sysfs_delbr(struct net_device * dev)2105 static inline void br_sysfs_delbr(struct net_device *dev) { return; }
2106 #endif /* CONFIG_SYSFS */
2107
2108 /* br_switchdev.c */
2109 #ifdef CONFIG_NET_SWITCHDEV
2110 int br_switchdev_port_offload(struct net_bridge_port *p,
2111 struct net_device *dev, const void *ctx,
2112 struct notifier_block *atomic_nb,
2113 struct notifier_block *blocking_nb,
2114 bool tx_fwd_offload,
2115 struct netlink_ext_ack *extack);
2116
2117 void br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
2118 struct notifier_block *atomic_nb,
2119 struct notifier_block *blocking_nb);
2120
2121 int br_switchdev_port_replay(struct net_bridge_port *p,
2122 struct net_device *dev, const void *ctx,
2123 struct notifier_block *atomic_nb,
2124 struct notifier_block *blocking_nb,
2125 struct netlink_ext_ack *extack);
2126
2127 bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb);
2128
2129 void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb);
2130
2131 void nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
2132 struct sk_buff *skb);
2133 void nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
2134 struct sk_buff *skb);
2135 void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
2136 struct sk_buff *skb);
2137 bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
2138 const struct sk_buff *skb);
2139 int br_switchdev_set_port_flag(struct net_bridge_port *p,
2140 unsigned long flags,
2141 unsigned long mask,
2142 struct netlink_ext_ack *extack);
2143 void br_switchdev_fdb_notify(struct net_bridge *br,
2144 const struct net_bridge_fdb_entry *fdb, int type);
2145 void br_switchdev_mdb_notify(struct net_device *dev,
2146 struct net_bridge_mdb_entry *mp,
2147 struct net_bridge_port_group *pg,
2148 int type);
2149 int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid, u16 flags,
2150 bool changed, struct netlink_ext_ack *extack);
2151 int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid);
2152 void br_switchdev_init(struct net_bridge *br);
2153
br_switchdev_frame_unmark(struct sk_buff * skb)2154 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
2155 {
2156 skb->offload_fwd_mark = 0;
2157 }
2158 #else
2159 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)2160 br_switchdev_port_offload(struct net_bridge_port *p,
2161 struct net_device *dev, const void *ctx,
2162 struct notifier_block *atomic_nb,
2163 struct notifier_block *blocking_nb,
2164 bool tx_fwd_offload,
2165 struct netlink_ext_ack *extack)
2166 {
2167 return -EOPNOTSUPP;
2168 }
2169
2170 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)2171 br_switchdev_port_unoffload(struct net_bridge_port *p, const void *ctx,
2172 struct notifier_block *atomic_nb,
2173 struct notifier_block *blocking_nb)
2174 {
2175 }
2176
2177 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)2178 br_switchdev_port_replay(struct net_bridge_port *p,
2179 struct net_device *dev, const void *ctx,
2180 struct notifier_block *atomic_nb,
2181 struct notifier_block *blocking_nb,
2182 struct netlink_ext_ack *extack)
2183 {
2184 return -EOPNOTSUPP;
2185 }
2186
br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff * skb)2187 static inline bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb)
2188 {
2189 return false;
2190 }
2191
br_switchdev_frame_set_offload_fwd_mark(struct sk_buff * skb)2192 static inline void br_switchdev_frame_set_offload_fwd_mark(struct sk_buff *skb)
2193 {
2194 }
2195
2196 static inline void
nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port * p,struct sk_buff * skb)2197 nbp_switchdev_frame_mark_tx_fwd_offload(const struct net_bridge_port *p,
2198 struct sk_buff *skb)
2199 {
2200 }
2201
2202 static inline void
nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port * p,struct sk_buff * skb)2203 nbp_switchdev_frame_mark_tx_fwd_to_hwdom(const struct net_bridge_port *p,
2204 struct sk_buff *skb)
2205 {
2206 }
2207
nbp_switchdev_frame_mark(const struct net_bridge_port * p,struct sk_buff * skb)2208 static inline void nbp_switchdev_frame_mark(const struct net_bridge_port *p,
2209 struct sk_buff *skb)
2210 {
2211 }
2212
nbp_switchdev_allowed_egress(const struct net_bridge_port * p,const struct sk_buff * skb)2213 static inline bool nbp_switchdev_allowed_egress(const struct net_bridge_port *p,
2214 const struct sk_buff *skb)
2215 {
2216 return true;
2217 }
2218
br_switchdev_set_port_flag(struct net_bridge_port * p,unsigned long flags,unsigned long mask,struct netlink_ext_ack * extack)2219 static inline int br_switchdev_set_port_flag(struct net_bridge_port *p,
2220 unsigned long flags,
2221 unsigned long mask,
2222 struct netlink_ext_ack *extack)
2223 {
2224 return 0;
2225 }
2226
br_switchdev_port_vlan_add(struct net_device * dev,u16 vid,u16 flags,bool changed,struct netlink_ext_ack * extack)2227 static inline int br_switchdev_port_vlan_add(struct net_device *dev, u16 vid,
2228 u16 flags, bool changed,
2229 struct netlink_ext_ack *extack)
2230 {
2231 return -EOPNOTSUPP;
2232 }
2233
br_switchdev_port_vlan_del(struct net_device * dev,u16 vid)2234 static inline int br_switchdev_port_vlan_del(struct net_device *dev, u16 vid)
2235 {
2236 return -EOPNOTSUPP;
2237 }
2238
2239 static inline void
br_switchdev_fdb_notify(struct net_bridge * br,const struct net_bridge_fdb_entry * fdb,int type)2240 br_switchdev_fdb_notify(struct net_bridge *br,
2241 const struct net_bridge_fdb_entry *fdb, int type)
2242 {
2243 }
2244
br_switchdev_mdb_notify(struct net_device * dev,struct net_bridge_mdb_entry * mp,struct net_bridge_port_group * pg,int type)2245 static inline void br_switchdev_mdb_notify(struct net_device *dev,
2246 struct net_bridge_mdb_entry *mp,
2247 struct net_bridge_port_group *pg,
2248 int type)
2249 {
2250 }
2251
br_switchdev_frame_unmark(struct sk_buff * skb)2252 static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
2253 {
2254 }
2255
br_switchdev_init(struct net_bridge * br)2256 static inline void br_switchdev_init(struct net_bridge *br)
2257 {
2258 }
2259
2260 #endif /* CONFIG_NET_SWITCHDEV */
2261
2262 /* br_arp_nd_proxy.c */
2263 void br_recalculate_neigh_suppress_enabled(struct net_bridge *br);
2264 void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
2265 u16 vid, struct net_bridge_port *p);
2266 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
2267 u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
2268 struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
2269 bool br_is_neigh_suppress_enabled(const struct net_bridge_port *p, u16 vid);
2270 #endif
2271