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"
9 static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg,
12 const struct net_bridge_vlan *vle = ptr;
13 u16 vid = *(u16 *)arg->key;
15 return vle->vid != vid;
18 static const struct rhashtable_params br_vlan_rht_params = {
19 .head_offset = offsetof(struct net_bridge_vlan, vnode),
20 .key_offset = offsetof(struct net_bridge_vlan, vid),
21 .key_len = sizeof(u16),
24 .max_size = VLAN_N_VID,
25 .obj_cmpfn = br_vlan_cmp,
26 .automatic_shrinking = true,
29 static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid)
31 return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params);
34 static void __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid)
43 static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid)
52 static void __vlan_add_flags(struct net_bridge_vlan *v, u16 flags)
54 struct net_bridge_vlan_group *vg;
56 if (br_vlan_is_master(v))
57 vg = br_vlan_group(v->br);
59 vg = nbp_vlan_group(v->port);
61 if (flags & BRIDGE_VLAN_INFO_PVID)
62 __vlan_add_pvid(vg, v->vid);
64 __vlan_delete_pvid(vg, v->vid);
66 if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
67 v->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
69 v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED;
72 static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br,
75 struct switchdev_obj_port_vlan v = {
77 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
84 /* Try switchdev op first. In case it is not supported, fallback to
87 err = switchdev_port_obj_add(dev, &v.obj);
88 if (err == -EOPNOTSUPP)
89 return vlan_vid_add(dev, br->vlan_proto, vid);
93 static void __vlan_add_list(struct net_bridge_vlan *v)
95 struct net_bridge_vlan_group *vg;
96 struct list_head *headp, *hpos;
97 struct net_bridge_vlan *vent;
99 if (br_vlan_is_master(v))
100 vg = br_vlan_group(v->br);
102 vg = nbp_vlan_group(v->port);
104 headp = &vg->vlan_list;
105 list_for_each_prev(hpos, headp) {
106 vent = list_entry(hpos, struct net_bridge_vlan, vlist);
107 if (v->vid < vent->vid)
112 list_add_rcu(&v->vlist, hpos);
115 static void __vlan_del_list(struct net_bridge_vlan *v)
117 list_del_rcu(&v->vlist);
120 static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
123 struct switchdev_obj_port_vlan v = {
125 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
131 /* Try switchdev op first. In case it is not supported, fallback to
134 err = switchdev_port_obj_del(dev, &v.obj);
135 if (err == -EOPNOTSUPP) {
136 vlan_vid_del(dev, br->vlan_proto, vid);
142 /* Returns a master vlan, if it didn't exist it gets created. In all cases a
143 * a reference is taken to the master vlan before returning.
145 static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid)
147 struct net_bridge_vlan_group *vg;
148 struct net_bridge_vlan *masterv;
150 vg = br_vlan_group(br);
151 masterv = br_vlan_find(vg, vid);
153 /* missing global ctx, create it now */
154 if (br_vlan_add(br, vid, 0))
156 masterv = br_vlan_find(vg, vid);
157 if (WARN_ON(!masterv))
160 atomic_inc(&masterv->refcnt);
165 static void br_master_vlan_rcu_free(struct rcu_head *rcu)
167 struct net_bridge_vlan *v;
169 v = container_of(rcu, struct net_bridge_vlan, rcu);
170 WARN_ON(!br_vlan_is_master(v));
171 free_percpu(v->stats);
176 static void br_vlan_put_master(struct net_bridge_vlan *masterv)
178 struct net_bridge_vlan_group *vg;
180 if (!br_vlan_is_master(masterv))
183 vg = br_vlan_group(masterv->br);
184 if (atomic_dec_and_test(&masterv->refcnt)) {
185 rhashtable_remove_fast(&vg->vlan_hash,
186 &masterv->vnode, br_vlan_rht_params);
187 __vlan_del_list(masterv);
188 call_rcu(&masterv->rcu, br_master_vlan_rcu_free);
192 /* This is the shared VLAN add function which works for both ports and bridge
193 * devices. There are four possible calls to this function in terms of the
195 * 1. vlan is being added on a port (no master flags, global entry exists)
196 * 2. vlan is being added on a bridge (both master and brentry flags)
197 * 3. vlan is being added on a port, but a global entry didn't exist which
198 * is being created right now (master flag set, brentry flag unset), the
199 * global entry is used for global per-vlan features, but not for filtering
200 * 4. same as 3 but with both master and brentry flags set so the entry
201 * will be used for filtering in both the port and the bridge
203 static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
205 struct net_bridge_vlan *masterv = NULL;
206 struct net_bridge_port *p = NULL;
207 struct net_bridge_vlan_group *vg;
208 struct net_device *dev;
209 struct net_bridge *br;
212 if (br_vlan_is_master(v)) {
215 vg = br_vlan_group(br);
220 vg = nbp_vlan_group(p);
224 /* Add VLAN to the device filter if it is supported.
225 * This ensures tagged traffic enters the bridge when
226 * promiscuous mode is disabled by br_manage_promisc().
228 err = __vlan_vid_add(dev, br, v->vid, flags);
232 /* need to work on the master vlan too */
233 if (flags & BRIDGE_VLAN_INFO_MASTER) {
234 err = br_vlan_add(br, v->vid, flags |
235 BRIDGE_VLAN_INFO_BRENTRY);
240 masterv = br_vlan_get_master(br, v->vid);
246 v->stats = masterv->stats;
249 /* Add the dev mac and count the vlan only if it's usable */
250 if (br_vlan_should_use(v)) {
251 err = br_fdb_insert(br, p, dev->dev_addr, v->vid);
253 br_err(br, "failed insert local address into bridge forwarding table\n");
259 err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode,
265 __vlan_add_flags(v, flags);
270 if (br_vlan_should_use(v)) {
271 br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid);
277 __vlan_vid_del(dev, br, v->vid);
279 br_vlan_put_master(masterv);
287 static int __vlan_del(struct net_bridge_vlan *v)
289 struct net_bridge_vlan *masterv = v;
290 struct net_bridge_vlan_group *vg;
291 struct net_bridge_port *p = NULL;
294 if (br_vlan_is_master(v)) {
295 vg = br_vlan_group(v->br);
298 vg = nbp_vlan_group(v->port);
302 __vlan_delete_pvid(vg, v->vid);
304 err = __vlan_vid_del(p->dev, p->br, v->vid);
309 if (br_vlan_should_use(v)) {
310 v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY;
315 rhashtable_remove_fast(&vg->vlan_hash, &v->vnode,
321 br_vlan_put_master(masterv);
326 static void __vlan_group_free(struct net_bridge_vlan_group *vg)
328 WARN_ON(!list_empty(&vg->vlan_list));
329 rhashtable_destroy(&vg->vlan_hash);
333 static void __vlan_flush(struct net_bridge_vlan_group *vg)
335 struct net_bridge_vlan *vlan, *tmp;
337 __vlan_delete_pvid(vg, vg->pvid);
338 list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist)
342 struct sk_buff *br_handle_vlan(struct net_bridge *br,
343 struct net_bridge_vlan_group *vg,
346 struct br_vlan_stats *stats;
347 struct net_bridge_vlan *v;
350 /* If this packet was not filtered at input, let it pass */
351 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
354 /* At this point, we know that the frame was filtered and contains
355 * a valid vlan id. If the vlan id has untagged flag set,
356 * send untagged; otherwise, send tagged.
358 br_vlan_get_tag(skb, &vid);
359 v = br_vlan_find(vg, vid);
360 /* Vlan entry must be configured at this point. The
361 * only exception is the bridge is set in promisc mode and the
362 * packet is destined for the bridge device. In this case
363 * pass the packet as is.
365 if (!v || !br_vlan_should_use(v)) {
366 if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) {
373 if (br->vlan_stats_enabled) {
374 stats = this_cpu_ptr(v->stats);
375 u64_stats_update_begin(&stats->syncp);
376 stats->tx_bytes += skb->len;
378 u64_stats_update_end(&stats->syncp);
381 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
387 /* Called under RCU */
388 static bool __allowed_ingress(const struct net_bridge *br,
389 struct net_bridge_vlan_group *vg,
390 struct sk_buff *skb, u16 *vid)
392 struct br_vlan_stats *stats;
393 struct net_bridge_vlan *v;
396 BR_INPUT_SKB_CB(skb)->vlan_filtered = true;
397 /* If vlan tx offload is disabled on bridge device and frame was
398 * sent from vlan device on the bridge device, it does not have
399 * HW accelerated vlan tag.
401 if (unlikely(!skb_vlan_tag_present(skb) &&
402 skb->protocol == br->vlan_proto)) {
403 skb = skb_vlan_untag(skb);
408 if (!br_vlan_get_tag(skb, vid)) {
410 if (skb->vlan_proto != br->vlan_proto) {
411 /* Protocol-mismatch, empty out vlan_tci for new tag */
412 skb_push(skb, ETH_HLEN);
413 skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto,
414 skb_vlan_tag_get(skb));
418 skb_pull(skb, ETH_HLEN);
419 skb_reset_mac_len(skb);
431 u16 pvid = br_get_pvid(vg);
433 /* Frame had a tag with VID 0 or did not have a tag.
434 * See if pvid is set on this port. That tells us which
435 * vlan untagged or priority-tagged traffic belongs to.
440 /* PVID is set on this port. Any untagged or priority-tagged
441 * ingress frame is considered to belong to this vlan.
445 /* Untagged Frame. */
446 __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid);
448 /* Priority-tagged Frame.
449 * At this point, We know that skb->vlan_tci had
450 * VLAN_TAG_PRESENT bit and its VID field was 0x000.
451 * We update only VID field and preserve PCP field.
453 skb->vlan_tci |= pvid;
455 /* if stats are disabled we can avoid the lookup */
456 if (!br->vlan_stats_enabled)
459 v = br_vlan_find(vg, *vid);
460 if (!v || !br_vlan_should_use(v))
463 if (br->vlan_stats_enabled) {
464 stats = this_cpu_ptr(v->stats);
465 u64_stats_update_begin(&stats->syncp);
466 stats->rx_bytes += skb->len;
468 u64_stats_update_end(&stats->syncp);
478 bool br_allowed_ingress(const struct net_bridge *br,
479 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
482 /* If VLAN filtering is disabled on the bridge, all packets are
485 if (!br->vlan_enabled) {
486 BR_INPUT_SKB_CB(skb)->vlan_filtered = false;
490 return __allowed_ingress(br, vg, skb, vid);
493 /* Called under RCU. */
494 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
495 const struct sk_buff *skb)
497 const struct net_bridge_vlan *v;
500 /* If this packet was not filtered at input, let it pass */
501 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
504 br_vlan_get_tag(skb, &vid);
505 v = br_vlan_find(vg, vid);
506 if (v && br_vlan_should_use(v))
512 /* Called under RCU */
513 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid)
515 struct net_bridge_vlan_group *vg;
516 struct net_bridge *br = p->br;
518 /* If filtering was disabled at input, let it pass. */
519 if (!br->vlan_enabled)
522 vg = nbp_vlan_group_rcu(p);
523 if (!vg || !vg->num_vlans)
526 if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto)
530 *vid = br_get_pvid(vg);
537 if (br_vlan_find(vg, *vid))
543 /* Must be protected by RTNL.
544 * Must be called with vid in range from 1 to 4094 inclusive.
546 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
548 struct net_bridge_vlan_group *vg;
549 struct net_bridge_vlan *vlan;
554 vg = br_vlan_group(br);
555 vlan = br_vlan_find(vg, vid);
557 if (!br_vlan_is_brentry(vlan)) {
558 /* Trying to change flags of non-existent bridge vlan */
559 if (!(flags & BRIDGE_VLAN_INFO_BRENTRY))
561 /* It was only kept for port vlans, now make it real */
562 ret = br_fdb_insert(br, NULL, br->dev->dev_addr,
565 br_err(br, "failed insert local address into bridge forwarding table\n");
568 atomic_inc(&vlan->refcnt);
569 vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY;
572 __vlan_add_flags(vlan, flags);
576 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
580 vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);
586 vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER;
587 vlan->flags &= ~BRIDGE_VLAN_INFO_PVID;
589 if (flags & BRIDGE_VLAN_INFO_BRENTRY)
590 atomic_set(&vlan->refcnt, 1);
591 ret = __vlan_add(vlan, flags);
593 free_percpu(vlan->stats);
600 /* Must be protected by RTNL.
601 * Must be called with vid in range from 1 to 4094 inclusive.
603 int br_vlan_delete(struct net_bridge *br, u16 vid)
605 struct net_bridge_vlan_group *vg;
606 struct net_bridge_vlan *v;
610 vg = br_vlan_group(br);
611 v = br_vlan_find(vg, vid);
612 if (!v || !br_vlan_is_brentry(v))
615 br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid);
616 br_fdb_delete_by_port(br, NULL, vid, 0);
618 return __vlan_del(v);
621 void br_vlan_flush(struct net_bridge *br)
623 struct net_bridge_vlan_group *vg;
627 /* delete auto-added default pvid local fdb before flushing vlans
628 * otherwise it will be leaked on bridge device init failure
630 br_fdb_delete_by_port(br, NULL, 0, 1);
632 vg = br_vlan_group(br);
634 RCU_INIT_POINTER(br->vlgrp, NULL);
636 __vlan_group_free(vg);
639 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid)
644 return br_vlan_lookup(&vg->vlan_hash, vid);
647 /* Must be protected by RTNL. */
648 static void recalculate_group_addr(struct net_bridge *br)
650 if (br->group_addr_set)
653 spin_lock_bh(&br->lock);
654 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) {
655 /* Bridge Group Address */
656 br->group_addr[5] = 0x00;
657 } else { /* vlan_enabled && ETH_P_8021AD */
658 /* Provider Bridge Group Address */
659 br->group_addr[5] = 0x08;
661 spin_unlock_bh(&br->lock);
664 /* Must be protected by RTNL. */
665 void br_recalculate_fwd_mask(struct net_bridge *br)
667 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q))
668 br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT;
669 else /* vlan_enabled && ETH_P_8021AD */
670 br->group_fwd_mask_required = BR_GROUPFWD_8021AD &
671 ~(1u << br->group_addr[5]);
674 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
676 struct switchdev_attr attr = {
678 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
679 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
680 .u.vlan_filtering = val,
684 if (br->vlan_enabled == val)
687 err = switchdev_port_attr_set(br->dev, &attr);
688 if (err && err != -EOPNOTSUPP)
691 br->vlan_enabled = val;
692 br_manage_promisc(br);
693 recalculate_group_addr(br);
694 br_recalculate_fwd_mask(br);
699 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
701 return __br_vlan_filter_toggle(br, val);
704 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
707 struct net_bridge_port *p;
708 struct net_bridge_vlan *vlan;
709 struct net_bridge_vlan_group *vg;
712 if (br->vlan_proto == proto)
715 /* Add VLANs for the new proto to the device filter. */
716 list_for_each_entry(p, &br->port_list, list) {
717 vg = nbp_vlan_group(p);
718 list_for_each_entry(vlan, &vg->vlan_list, vlist) {
719 err = vlan_vid_add(p->dev, proto, vlan->vid);
725 oldproto = br->vlan_proto;
726 br->vlan_proto = proto;
728 recalculate_group_addr(br);
729 br_recalculate_fwd_mask(br);
731 /* Delete VLANs for the old proto from the device filter. */
732 list_for_each_entry(p, &br->port_list, list) {
733 vg = nbp_vlan_group(p);
734 list_for_each_entry(vlan, &vg->vlan_list, vlist)
735 vlan_vid_del(p->dev, oldproto, vlan->vid);
741 list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist)
742 vlan_vid_del(p->dev, proto, vlan->vid);
744 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
745 vg = nbp_vlan_group(p);
746 list_for_each_entry(vlan, &vg->vlan_list, vlist)
747 vlan_vid_del(p->dev, proto, vlan->vid);
753 int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
755 if (val != ETH_P_8021Q && val != ETH_P_8021AD)
756 return -EPROTONOSUPPORT;
758 return __br_vlan_set_proto(br, htons(val));
761 int br_vlan_set_stats(struct net_bridge *br, unsigned long val)
766 br->vlan_stats_enabled = val;
775 static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid)
777 struct net_bridge_vlan *v;
782 v = br_vlan_lookup(&vg->vlan_hash, vid);
783 if (v && br_vlan_should_use(v) &&
784 (v->flags & BRIDGE_VLAN_INFO_UNTAGGED))
790 static void br_vlan_disable_default_pvid(struct net_bridge *br)
792 struct net_bridge_port *p;
793 u16 pvid = br->default_pvid;
795 /* Disable default_pvid on all ports where it is still
798 if (vlan_default_pvid(br_vlan_group(br), pvid))
799 br_vlan_delete(br, pvid);
801 list_for_each_entry(p, &br->port_list, list) {
802 if (vlan_default_pvid(nbp_vlan_group(p), pvid))
803 nbp_vlan_delete(p, pvid);
806 br->default_pvid = 0;
809 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
811 const struct net_bridge_vlan *pvent;
812 struct net_bridge_vlan_group *vg;
813 struct net_bridge_port *p;
816 unsigned long *changed;
819 br_vlan_disable_default_pvid(br);
823 changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long),
828 old_pvid = br->default_pvid;
830 /* Update default_pvid config only if we do not conflict with
831 * user configuration.
833 vg = br_vlan_group(br);
834 pvent = br_vlan_find(vg, pvid);
835 if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) &&
836 (!pvent || !br_vlan_should_use(pvent))) {
837 err = br_vlan_add(br, pvid,
838 BRIDGE_VLAN_INFO_PVID |
839 BRIDGE_VLAN_INFO_UNTAGGED |
840 BRIDGE_VLAN_INFO_BRENTRY);
843 br_vlan_delete(br, old_pvid);
847 list_for_each_entry(p, &br->port_list, list) {
848 /* Update default_pvid config only if we do not conflict with
849 * user configuration.
851 vg = nbp_vlan_group(p);
853 !vlan_default_pvid(vg, old_pvid)) ||
854 br_vlan_find(vg, pvid))
857 err = nbp_vlan_add(p, pvid,
858 BRIDGE_VLAN_INFO_PVID |
859 BRIDGE_VLAN_INFO_UNTAGGED);
862 nbp_vlan_delete(p, old_pvid);
863 set_bit(p->port_no, changed);
866 br->default_pvid = pvid;
873 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
874 if (!test_bit(p->port_no, changed))
878 nbp_vlan_add(p, old_pvid,
879 BRIDGE_VLAN_INFO_PVID |
880 BRIDGE_VLAN_INFO_UNTAGGED);
881 nbp_vlan_delete(p, pvid);
884 if (test_bit(0, changed)) {
886 br_vlan_add(br, old_pvid,
887 BRIDGE_VLAN_INFO_PVID |
888 BRIDGE_VLAN_INFO_UNTAGGED |
889 BRIDGE_VLAN_INFO_BRENTRY);
890 br_vlan_delete(br, pvid);
895 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val)
900 if (val >= VLAN_VID_MASK)
903 if (pvid == br->default_pvid)
906 /* Only allow default pvid change when filtering is disabled */
907 if (br->vlan_enabled) {
908 pr_info_once("Please disable vlan filtering to change default_pvid\n");
912 err = __br_vlan_set_default_pvid(br, pvid);
917 int br_vlan_init(struct net_bridge *br)
919 struct net_bridge_vlan_group *vg;
922 vg = kzalloc(sizeof(*vg), GFP_KERNEL);
925 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
928 INIT_LIST_HEAD(&vg->vlan_list);
929 br->vlan_proto = htons(ETH_P_8021Q);
930 br->default_pvid = 1;
931 rcu_assign_pointer(br->vlgrp, vg);
932 ret = br_vlan_add(br, 1,
933 BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED |
934 BRIDGE_VLAN_INFO_BRENTRY);
942 rhashtable_destroy(&vg->vlan_hash);
949 int nbp_vlan_init(struct net_bridge_port *p)
951 struct switchdev_attr attr = {
952 .orig_dev = p->br->dev,
953 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
954 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
955 .u.vlan_filtering = p->br->vlan_enabled,
957 struct net_bridge_vlan_group *vg;
960 vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL);
964 ret = switchdev_port_attr_set(p->dev, &attr);
965 if (ret && ret != -EOPNOTSUPP)
966 goto err_vlan_enabled;
968 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
971 INIT_LIST_HEAD(&vg->vlan_list);
972 rcu_assign_pointer(p->vlgrp, vg);
973 if (p->br->default_pvid) {
974 ret = nbp_vlan_add(p, p->br->default_pvid,
975 BRIDGE_VLAN_INFO_PVID |
976 BRIDGE_VLAN_INFO_UNTAGGED);
984 RCU_INIT_POINTER(p->vlgrp, NULL);
986 rhashtable_destroy(&vg->vlan_hash);
994 /* Must be protected by RTNL.
995 * Must be called with vid in range from 1 to 4094 inclusive.
997 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
999 struct switchdev_obj_port_vlan v = {
1000 .obj.orig_dev = port->dev,
1001 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
1006 struct net_bridge_vlan *vlan;
1011 vlan = br_vlan_find(nbp_vlan_group(port), vid);
1013 /* Pass the flags to the hardware bridge */
1014 ret = switchdev_port_obj_add(port->dev, &v.obj);
1015 if (ret && ret != -EOPNOTSUPP)
1017 __vlan_add_flags(vlan, flags);
1021 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
1027 ret = __vlan_add(vlan, flags);
1034 /* Must be protected by RTNL.
1035 * Must be called with vid in range from 1 to 4094 inclusive.
1037 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1039 struct net_bridge_vlan *v;
1043 v = br_vlan_find(nbp_vlan_group(port), vid);
1046 br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid);
1047 br_fdb_delete_by_port(port->br, port, vid, 0);
1049 return __vlan_del(v);
1052 void nbp_vlan_flush(struct net_bridge_port *port)
1054 struct net_bridge_vlan_group *vg;
1058 vg = nbp_vlan_group(port);
1060 RCU_INIT_POINTER(port->vlgrp, NULL);
1062 __vlan_group_free(vg);
1065 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1066 struct br_vlan_stats *stats)
1070 memset(stats, 0, sizeof(*stats));
1071 for_each_possible_cpu(i) {
1072 u64 rxpackets, rxbytes, txpackets, txbytes;
1073 struct br_vlan_stats *cpu_stats;
1076 cpu_stats = per_cpu_ptr(v->stats, i);
1078 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
1079 rxpackets = cpu_stats->rx_packets;
1080 rxbytes = cpu_stats->rx_bytes;
1081 txbytes = cpu_stats->tx_bytes;
1082 txpackets = cpu_stats->tx_packets;
1083 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
1085 stats->rx_packets += rxpackets;
1086 stats->rx_bytes += rxbytes;
1087 stats->tx_bytes += txbytes;
1088 stats->tx_packets += txpackets;