1 #include <linux/kernel.h>
2 #include <linux/netdevice.h>
3 #include <linux/rtnetlink.h>
4 #include <linux/slab.h>
5 #include <net/switchdev.h>
7 #include "br_private.h"
8 #include "br_private_tunnel.h"
10 static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg,
13 const struct net_bridge_vlan *vle = ptr;
14 u16 vid = *(u16 *)arg->key;
16 return vle->vid != vid;
19 static const struct rhashtable_params br_vlan_rht_params = {
20 .head_offset = offsetof(struct net_bridge_vlan, vnode),
21 .key_offset = offsetof(struct net_bridge_vlan, vid),
22 .key_len = sizeof(u16),
25 .max_size = VLAN_N_VID,
26 .obj_cmpfn = br_vlan_cmp,
27 .automatic_shrinking = true,
30 static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid)
32 return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params);
35 static bool __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid)
46 static bool __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid)
57 /* return true if anything changed, false otherwise */
58 static bool __vlan_add_flags(struct net_bridge_vlan *v, u16 flags)
60 struct net_bridge_vlan_group *vg;
61 u16 old_flags = v->flags;
64 if (br_vlan_is_master(v))
65 vg = br_vlan_group(v->br);
67 vg = nbp_vlan_group(v->port);
69 if (flags & BRIDGE_VLAN_INFO_PVID)
70 ret = __vlan_add_pvid(vg, v->vid);
72 ret = __vlan_delete_pvid(vg, v->vid);
74 if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
75 v->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
77 v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED;
79 return ret || !!(old_flags ^ v->flags);
82 static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br,
87 /* Try switchdev op first. In case it is not supported, fallback to
90 err = br_switchdev_port_vlan_add(dev, vid, flags);
91 if (err == -EOPNOTSUPP)
92 return vlan_vid_add(dev, br->vlan_proto, vid);
96 static void __vlan_add_list(struct net_bridge_vlan *v)
98 struct net_bridge_vlan_group *vg;
99 struct list_head *headp, *hpos;
100 struct net_bridge_vlan *vent;
102 if (br_vlan_is_master(v))
103 vg = br_vlan_group(v->br);
105 vg = nbp_vlan_group(v->port);
107 headp = &vg->vlan_list;
108 list_for_each_prev(hpos, headp) {
109 vent = list_entry(hpos, struct net_bridge_vlan, vlist);
110 if (v->vid < vent->vid)
115 list_add_rcu(&v->vlist, hpos);
118 static void __vlan_del_list(struct net_bridge_vlan *v)
120 list_del_rcu(&v->vlist);
123 static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
128 /* Try switchdev op first. In case it is not supported, fallback to
131 err = br_switchdev_port_vlan_del(dev, vid);
132 if (err == -EOPNOTSUPP) {
133 vlan_vid_del(dev, br->vlan_proto, vid);
139 /* Returns a master vlan, if it didn't exist it gets created. In all cases a
140 * a reference is taken to the master vlan before returning.
142 static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid)
144 struct net_bridge_vlan_group *vg;
145 struct net_bridge_vlan *masterv;
147 vg = br_vlan_group(br);
148 masterv = br_vlan_find(vg, vid);
152 /* missing global ctx, create it now */
153 if (br_vlan_add(br, vid, 0, &changed))
155 masterv = br_vlan_find(vg, vid);
156 if (WARN_ON(!masterv))
158 refcount_set(&masterv->refcnt, 1);
161 refcount_inc(&masterv->refcnt);
166 static void br_master_vlan_rcu_free(struct rcu_head *rcu)
168 struct net_bridge_vlan *v;
170 v = container_of(rcu, struct net_bridge_vlan, rcu);
171 WARN_ON(!br_vlan_is_master(v));
172 free_percpu(v->stats);
177 static void br_vlan_put_master(struct net_bridge_vlan *masterv)
179 struct net_bridge_vlan_group *vg;
181 if (!br_vlan_is_master(masterv))
184 vg = br_vlan_group(masterv->br);
185 if (refcount_dec_and_test(&masterv->refcnt)) {
186 rhashtable_remove_fast(&vg->vlan_hash,
187 &masterv->vnode, br_vlan_rht_params);
188 __vlan_del_list(masterv);
189 call_rcu(&masterv->rcu, br_master_vlan_rcu_free);
193 /* This is the shared VLAN add function which works for both ports and bridge
194 * devices. There are four possible calls to this function in terms of the
196 * 1. vlan is being added on a port (no master flags, global entry exists)
197 * 2. vlan is being added on a bridge (both master and brentry flags)
198 * 3. vlan is being added on a port, but a global entry didn't exist which
199 * is being created right now (master flag set, brentry flag unset), the
200 * global entry is used for global per-vlan features, but not for filtering
201 * 4. same as 3 but with both master and brentry flags set so the entry
202 * will be used for filtering in both the port and the bridge
204 static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
206 struct net_bridge_vlan *masterv = NULL;
207 struct net_bridge_port *p = NULL;
208 struct net_bridge_vlan_group *vg;
209 struct net_device *dev;
210 struct net_bridge *br;
213 if (br_vlan_is_master(v)) {
216 vg = br_vlan_group(br);
221 vg = nbp_vlan_group(p);
225 /* Add VLAN to the device filter if it is supported.
226 * This ensures tagged traffic enters the bridge when
227 * promiscuous mode is disabled by br_manage_promisc().
229 err = __vlan_vid_add(dev, br, v->vid, flags);
233 /* need to work on the master vlan too */
234 if (flags & BRIDGE_VLAN_INFO_MASTER) {
237 err = br_vlan_add(br, v->vid,
238 flags | BRIDGE_VLAN_INFO_BRENTRY,
244 masterv = br_vlan_get_master(br, v->vid);
248 v->stats = masterv->stats;
250 err = br_switchdev_port_vlan_add(dev, v->vid, flags);
251 if (err && err != -EOPNOTSUPP)
255 /* Add the dev mac and count the vlan only if it's usable */
256 if (br_vlan_should_use(v)) {
257 err = br_fdb_insert(br, p, dev->dev_addr, v->vid);
259 br_err(br, "failed insert local address into bridge forwarding table\n");
265 err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode,
271 __vlan_add_flags(v, flags);
276 if (br_vlan_should_use(v)) {
277 br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid);
283 __vlan_vid_del(dev, br, v->vid);
285 br_vlan_put_master(masterv);
289 br_switchdev_port_vlan_del(dev, v->vid);
295 static int __vlan_del(struct net_bridge_vlan *v)
297 struct net_bridge_vlan *masterv = v;
298 struct net_bridge_vlan_group *vg;
299 struct net_bridge_port *p = NULL;
302 if (br_vlan_is_master(v)) {
303 vg = br_vlan_group(v->br);
306 vg = nbp_vlan_group(v->port);
310 __vlan_delete_pvid(vg, v->vid);
312 err = __vlan_vid_del(p->dev, p->br, v->vid);
316 err = br_switchdev_port_vlan_del(v->br->dev, v->vid);
317 if (err && err != -EOPNOTSUPP)
322 if (br_vlan_should_use(v)) {
323 v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY;
328 vlan_tunnel_info_del(vg, v);
329 rhashtable_remove_fast(&vg->vlan_hash, &v->vnode,
335 br_vlan_put_master(masterv);
340 static void __vlan_group_free(struct net_bridge_vlan_group *vg)
342 WARN_ON(!list_empty(&vg->vlan_list));
343 rhashtable_destroy(&vg->vlan_hash);
344 vlan_tunnel_deinit(vg);
348 static void __vlan_flush(struct net_bridge_vlan_group *vg)
350 struct net_bridge_vlan *vlan, *tmp;
352 __vlan_delete_pvid(vg, vg->pvid);
353 list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist)
357 struct sk_buff *br_handle_vlan(struct net_bridge *br,
358 const struct net_bridge_port *p,
359 struct net_bridge_vlan_group *vg,
362 struct br_vlan_stats *stats;
363 struct net_bridge_vlan *v;
366 /* If this packet was not filtered at input, let it pass */
367 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
370 /* At this point, we know that the frame was filtered and contains
371 * a valid vlan id. If the vlan id has untagged flag set,
372 * send untagged; otherwise, send tagged.
374 br_vlan_get_tag(skb, &vid);
375 v = br_vlan_find(vg, vid);
376 /* Vlan entry must be configured at this point. The
377 * only exception is the bridge is set in promisc mode and the
378 * packet is destined for the bridge device. In this case
379 * pass the packet as is.
381 if (!v || !br_vlan_should_use(v)) {
382 if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) {
389 if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) {
390 stats = this_cpu_ptr(v->stats);
391 u64_stats_update_begin(&stats->syncp);
392 stats->tx_bytes += skb->len;
394 u64_stats_update_end(&stats->syncp);
397 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
400 if (p && (p->flags & BR_VLAN_TUNNEL) &&
401 br_handle_egress_vlan_tunnel(skb, v)) {
409 /* Called under RCU */
410 static bool __allowed_ingress(const struct net_bridge *br,
411 struct net_bridge_vlan_group *vg,
412 struct sk_buff *skb, u16 *vid)
414 struct br_vlan_stats *stats;
415 struct net_bridge_vlan *v;
418 BR_INPUT_SKB_CB(skb)->vlan_filtered = true;
419 /* If vlan tx offload is disabled on bridge device and frame was
420 * sent from vlan device on the bridge device, it does not have
421 * HW accelerated vlan tag.
423 if (unlikely(!skb_vlan_tag_present(skb) &&
424 skb->protocol == br->vlan_proto)) {
425 skb = skb_vlan_untag(skb);
430 if (!br_vlan_get_tag(skb, vid)) {
432 if (skb->vlan_proto != br->vlan_proto) {
433 /* Protocol-mismatch, empty out vlan_tci for new tag */
434 skb_push(skb, ETH_HLEN);
435 skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto,
436 skb_vlan_tag_get(skb));
440 skb_pull(skb, ETH_HLEN);
441 skb_reset_mac_len(skb);
453 u16 pvid = br_get_pvid(vg);
455 /* Frame had a tag with VID 0 or did not have a tag.
456 * See if pvid is set on this port. That tells us which
457 * vlan untagged or priority-tagged traffic belongs to.
462 /* PVID is set on this port. Any untagged or priority-tagged
463 * ingress frame is considered to belong to this vlan.
467 /* Untagged Frame. */
468 __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid);
470 /* Priority-tagged Frame.
471 * At this point, We know that skb->vlan_tci had
472 * VLAN_TAG_PRESENT bit and its VID field was 0x000.
473 * We update only VID field and preserve PCP field.
475 skb->vlan_tci |= pvid;
477 /* if stats are disabled we can avoid the lookup */
478 if (!br_opt_get(br, BROPT_VLAN_STATS_ENABLED))
481 v = br_vlan_find(vg, *vid);
482 if (!v || !br_vlan_should_use(v))
485 if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) {
486 stats = this_cpu_ptr(v->stats);
487 u64_stats_update_begin(&stats->syncp);
488 stats->rx_bytes += skb->len;
490 u64_stats_update_end(&stats->syncp);
500 bool br_allowed_ingress(const struct net_bridge *br,
501 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
504 /* If VLAN filtering is disabled on the bridge, all packets are
507 if (!br_opt_get(br, BROPT_VLAN_ENABLED)) {
508 BR_INPUT_SKB_CB(skb)->vlan_filtered = false;
512 return __allowed_ingress(br, vg, skb, vid);
515 /* Called under RCU. */
516 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
517 const struct sk_buff *skb)
519 const struct net_bridge_vlan *v;
522 /* If this packet was not filtered at input, let it pass */
523 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
526 br_vlan_get_tag(skb, &vid);
527 v = br_vlan_find(vg, vid);
528 if (v && br_vlan_should_use(v))
534 /* Called under RCU */
535 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid)
537 struct net_bridge_vlan_group *vg;
538 struct net_bridge *br = p->br;
540 /* If filtering was disabled at input, let it pass. */
541 if (!br_opt_get(br, BROPT_VLAN_ENABLED))
544 vg = nbp_vlan_group_rcu(p);
545 if (!vg || !vg->num_vlans)
548 if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto)
552 *vid = br_get_pvid(vg);
559 if (br_vlan_find(vg, *vid))
565 static int br_vlan_add_existing(struct net_bridge *br,
566 struct net_bridge_vlan_group *vg,
567 struct net_bridge_vlan *vlan,
568 u16 flags, bool *changed)
572 err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags);
573 if (err && err != -EOPNOTSUPP)
576 if (!br_vlan_is_brentry(vlan)) {
577 /* Trying to change flags of non-existent bridge vlan */
578 if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) {
582 /* It was only kept for port vlans, now make it real */
583 err = br_fdb_insert(br, NULL, br->dev->dev_addr,
586 br_err(br, "failed to insert local address into bridge forwarding table\n");
590 refcount_inc(&vlan->refcnt);
591 vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY;
596 if (__vlan_add_flags(vlan, flags))
603 br_switchdev_port_vlan_del(br->dev, vlan->vid);
607 /* Must be protected by RTNL.
608 * Must be called with vid in range from 1 to 4094 inclusive.
609 * changed must be true only if the vlan was created or updated
611 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed)
613 struct net_bridge_vlan_group *vg;
614 struct net_bridge_vlan *vlan;
620 vg = br_vlan_group(br);
621 vlan = br_vlan_find(vg, vid);
623 return br_vlan_add_existing(br, vg, vlan, flags, changed);
625 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
629 vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);
635 vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER;
636 vlan->flags &= ~BRIDGE_VLAN_INFO_PVID;
638 if (flags & BRIDGE_VLAN_INFO_BRENTRY)
639 refcount_set(&vlan->refcnt, 1);
640 ret = __vlan_add(vlan, flags);
642 free_percpu(vlan->stats);
651 /* Must be protected by RTNL.
652 * Must be called with vid in range from 1 to 4094 inclusive.
654 int br_vlan_delete(struct net_bridge *br, u16 vid)
656 struct net_bridge_vlan_group *vg;
657 struct net_bridge_vlan *v;
661 vg = br_vlan_group(br);
662 v = br_vlan_find(vg, vid);
663 if (!v || !br_vlan_is_brentry(v))
666 br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid);
667 br_fdb_delete_by_port(br, NULL, vid, 0);
669 vlan_tunnel_info_del(vg, v);
671 return __vlan_del(v);
674 void br_vlan_flush(struct net_bridge *br)
676 struct net_bridge_vlan_group *vg;
680 vg = br_vlan_group(br);
682 RCU_INIT_POINTER(br->vlgrp, NULL);
684 __vlan_group_free(vg);
687 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid)
692 return br_vlan_lookup(&vg->vlan_hash, vid);
695 /* Must be protected by RTNL. */
696 static void recalculate_group_addr(struct net_bridge *br)
698 if (br_opt_get(br, BROPT_GROUP_ADDR_SET))
701 spin_lock_bh(&br->lock);
702 if (!br_opt_get(br, BROPT_VLAN_ENABLED) ||
703 br->vlan_proto == htons(ETH_P_8021Q)) {
704 /* Bridge Group Address */
705 br->group_addr[5] = 0x00;
706 } else { /* vlan_enabled && ETH_P_8021AD */
707 /* Provider Bridge Group Address */
708 br->group_addr[5] = 0x08;
710 spin_unlock_bh(&br->lock);
713 /* Must be protected by RTNL. */
714 void br_recalculate_fwd_mask(struct net_bridge *br)
716 if (!br_opt_get(br, BROPT_VLAN_ENABLED) ||
717 br->vlan_proto == htons(ETH_P_8021Q))
718 br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT;
719 else /* vlan_enabled && ETH_P_8021AD */
720 br->group_fwd_mask_required = BR_GROUPFWD_8021AD &
721 ~(1u << br->group_addr[5]);
724 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
726 struct switchdev_attr attr = {
728 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
729 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
730 .u.vlan_filtering = val,
734 if (br_opt_get(br, BROPT_VLAN_ENABLED) == !!val)
737 err = switchdev_port_attr_set(br->dev, &attr);
738 if (err && err != -EOPNOTSUPP)
741 br_opt_toggle(br, BROPT_VLAN_ENABLED, !!val);
742 br_manage_promisc(br);
743 recalculate_group_addr(br);
744 br_recalculate_fwd_mask(br);
749 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
751 return __br_vlan_filter_toggle(br, val);
754 bool br_vlan_enabled(const struct net_device *dev)
756 struct net_bridge *br = netdev_priv(dev);
758 return br_opt_get(br, BROPT_VLAN_ENABLED);
760 EXPORT_SYMBOL_GPL(br_vlan_enabled);
762 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
765 struct net_bridge_port *p;
766 struct net_bridge_vlan *vlan;
767 struct net_bridge_vlan_group *vg;
770 if (br->vlan_proto == proto)
773 /* Add VLANs for the new proto to the device filter. */
774 list_for_each_entry(p, &br->port_list, list) {
775 vg = nbp_vlan_group(p);
776 list_for_each_entry(vlan, &vg->vlan_list, vlist) {
777 err = vlan_vid_add(p->dev, proto, vlan->vid);
783 oldproto = br->vlan_proto;
784 br->vlan_proto = proto;
786 recalculate_group_addr(br);
787 br_recalculate_fwd_mask(br);
789 /* Delete VLANs for the old proto from the device filter. */
790 list_for_each_entry(p, &br->port_list, list) {
791 vg = nbp_vlan_group(p);
792 list_for_each_entry(vlan, &vg->vlan_list, vlist)
793 vlan_vid_del(p->dev, oldproto, vlan->vid);
799 list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist)
800 vlan_vid_del(p->dev, proto, vlan->vid);
802 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
803 vg = nbp_vlan_group(p);
804 list_for_each_entry(vlan, &vg->vlan_list, vlist)
805 vlan_vid_del(p->dev, proto, vlan->vid);
811 int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
813 if (val != ETH_P_8021Q && val != ETH_P_8021AD)
814 return -EPROTONOSUPPORT;
816 return __br_vlan_set_proto(br, htons(val));
819 int br_vlan_set_stats(struct net_bridge *br, unsigned long val)
824 br_opt_toggle(br, BROPT_VLAN_STATS_ENABLED, !!val);
833 static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid)
835 struct net_bridge_vlan *v;
840 v = br_vlan_lookup(&vg->vlan_hash, vid);
841 if (v && br_vlan_should_use(v) &&
842 (v->flags & BRIDGE_VLAN_INFO_UNTAGGED))
848 static void br_vlan_disable_default_pvid(struct net_bridge *br)
850 struct net_bridge_port *p;
851 u16 pvid = br->default_pvid;
853 /* Disable default_pvid on all ports where it is still
856 if (vlan_default_pvid(br_vlan_group(br), pvid))
857 br_vlan_delete(br, pvid);
859 list_for_each_entry(p, &br->port_list, list) {
860 if (vlan_default_pvid(nbp_vlan_group(p), pvid))
861 nbp_vlan_delete(p, pvid);
864 br->default_pvid = 0;
867 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
869 const struct net_bridge_vlan *pvent;
870 struct net_bridge_vlan_group *vg;
871 struct net_bridge_port *p;
872 unsigned long *changed;
878 br_vlan_disable_default_pvid(br);
882 changed = bitmap_zalloc(BR_MAX_PORTS, GFP_KERNEL);
886 old_pvid = br->default_pvid;
888 /* Update default_pvid config only if we do not conflict with
889 * user configuration.
891 vg = br_vlan_group(br);
892 pvent = br_vlan_find(vg, pvid);
893 if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) &&
894 (!pvent || !br_vlan_should_use(pvent))) {
895 err = br_vlan_add(br, pvid,
896 BRIDGE_VLAN_INFO_PVID |
897 BRIDGE_VLAN_INFO_UNTAGGED |
898 BRIDGE_VLAN_INFO_BRENTRY,
902 br_vlan_delete(br, old_pvid);
906 list_for_each_entry(p, &br->port_list, list) {
907 /* Update default_pvid config only if we do not conflict with
908 * user configuration.
910 vg = nbp_vlan_group(p);
912 !vlan_default_pvid(vg, old_pvid)) ||
913 br_vlan_find(vg, pvid))
916 err = nbp_vlan_add(p, pvid,
917 BRIDGE_VLAN_INFO_PVID |
918 BRIDGE_VLAN_INFO_UNTAGGED,
922 nbp_vlan_delete(p, old_pvid);
923 set_bit(p->port_no, changed);
926 br->default_pvid = pvid;
929 bitmap_free(changed);
933 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
934 if (!test_bit(p->port_no, changed))
938 nbp_vlan_add(p, old_pvid,
939 BRIDGE_VLAN_INFO_PVID |
940 BRIDGE_VLAN_INFO_UNTAGGED,
942 nbp_vlan_delete(p, pvid);
945 if (test_bit(0, changed)) {
947 br_vlan_add(br, old_pvid,
948 BRIDGE_VLAN_INFO_PVID |
949 BRIDGE_VLAN_INFO_UNTAGGED |
950 BRIDGE_VLAN_INFO_BRENTRY,
952 br_vlan_delete(br, pvid);
957 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val)
962 if (val >= VLAN_VID_MASK)
965 if (pvid == br->default_pvid)
968 /* Only allow default pvid change when filtering is disabled */
969 if (br_opt_get(br, BROPT_VLAN_ENABLED)) {
970 pr_info_once("Please disable vlan filtering to change default_pvid\n");
974 err = __br_vlan_set_default_pvid(br, pvid);
979 int br_vlan_init(struct net_bridge *br)
981 struct net_bridge_vlan_group *vg;
985 vg = kzalloc(sizeof(*vg), GFP_KERNEL);
988 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
991 ret = vlan_tunnel_init(vg);
993 goto err_tunnel_init;
994 INIT_LIST_HEAD(&vg->vlan_list);
995 br->vlan_proto = htons(ETH_P_8021Q);
996 br->default_pvid = 1;
997 rcu_assign_pointer(br->vlgrp, vg);
998 ret = br_vlan_add(br, 1,
999 BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED |
1000 BRIDGE_VLAN_INFO_BRENTRY, &changed);
1008 vlan_tunnel_deinit(vg);
1010 rhashtable_destroy(&vg->vlan_hash);
1017 int nbp_vlan_init(struct net_bridge_port *p)
1019 struct switchdev_attr attr = {
1020 .orig_dev = p->br->dev,
1021 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
1022 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
1023 .u.vlan_filtering = br_opt_get(p->br, BROPT_VLAN_ENABLED),
1025 struct net_bridge_vlan_group *vg;
1028 vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL);
1032 ret = switchdev_port_attr_set(p->dev, &attr);
1033 if (ret && ret != -EOPNOTSUPP)
1034 goto err_vlan_enabled;
1036 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
1039 ret = vlan_tunnel_init(vg);
1041 goto err_tunnel_init;
1042 INIT_LIST_HEAD(&vg->vlan_list);
1043 rcu_assign_pointer(p->vlgrp, vg);
1044 if (p->br->default_pvid) {
1047 ret = nbp_vlan_add(p, p->br->default_pvid,
1048 BRIDGE_VLAN_INFO_PVID |
1049 BRIDGE_VLAN_INFO_UNTAGGED,
1058 RCU_INIT_POINTER(p->vlgrp, NULL);
1060 vlan_tunnel_deinit(vg);
1062 rhashtable_destroy(&vg->vlan_hash);
1070 /* Must be protected by RTNL.
1071 * Must be called with vid in range from 1 to 4094 inclusive.
1072 * changed must be true only if the vlan was created or updated
1074 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1077 struct net_bridge_vlan *vlan;
1083 vlan = br_vlan_find(nbp_vlan_group(port), vid);
1085 /* Pass the flags to the hardware bridge */
1086 ret = br_switchdev_port_vlan_add(port->dev, vid, flags);
1087 if (ret && ret != -EOPNOTSUPP)
1089 *changed = __vlan_add_flags(vlan, flags);
1094 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
1100 ret = __vlan_add(vlan, flags);
1109 /* Must be protected by RTNL.
1110 * Must be called with vid in range from 1 to 4094 inclusive.
1112 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1114 struct net_bridge_vlan *v;
1118 v = br_vlan_find(nbp_vlan_group(port), vid);
1121 br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid);
1122 br_fdb_delete_by_port(port->br, port, vid, 0);
1124 return __vlan_del(v);
1127 void nbp_vlan_flush(struct net_bridge_port *port)
1129 struct net_bridge_vlan_group *vg;
1133 vg = nbp_vlan_group(port);
1135 RCU_INIT_POINTER(port->vlgrp, NULL);
1137 __vlan_group_free(vg);
1140 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1141 struct br_vlan_stats *stats)
1145 memset(stats, 0, sizeof(*stats));
1146 for_each_possible_cpu(i) {
1147 u64 rxpackets, rxbytes, txpackets, txbytes;
1148 struct br_vlan_stats *cpu_stats;
1151 cpu_stats = per_cpu_ptr(v->stats, i);
1153 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
1154 rxpackets = cpu_stats->rx_packets;
1155 rxbytes = cpu_stats->rx_bytes;
1156 txbytes = cpu_stats->tx_bytes;
1157 txpackets = cpu_stats->tx_packets;
1158 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
1160 stats->rx_packets += rxpackets;
1161 stats->rx_bytes += rxbytes;
1162 stats->tx_bytes += txbytes;
1163 stats->tx_packets += txpackets;
1167 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
1169 struct net_bridge_vlan_group *vg;
1172 if (netif_is_bridge_master(dev))
1173 vg = br_vlan_group(netdev_priv(dev));
1177 *p_pvid = br_get_pvid(vg);
1180 EXPORT_SYMBOL_GPL(br_vlan_get_pvid);
1182 int br_vlan_get_info(const struct net_device *dev, u16 vid,
1183 struct bridge_vlan_info *p_vinfo)
1185 struct net_bridge_vlan_group *vg;
1186 struct net_bridge_vlan *v;
1187 struct net_bridge_port *p;
1190 p = br_port_get_check_rtnl(dev);
1192 vg = nbp_vlan_group(p);
1193 else if (netif_is_bridge_master(dev))
1194 vg = br_vlan_group(netdev_priv(dev));
1198 v = br_vlan_find(vg, vid);
1203 p_vinfo->flags = v->flags;
1206 EXPORT_SYMBOL_GPL(br_vlan_get_info);