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);
250 v->stats = masterv->stats;
252 err = br_switchdev_port_vlan_add(dev, v->vid, flags);
253 if (err && err != -EOPNOTSUPP)
257 /* Add the dev mac and count the vlan only if it's usable */
258 if (br_vlan_should_use(v)) {
259 err = br_fdb_insert(br, p, dev->dev_addr, v->vid);
261 br_err(br, "failed insert local address into bridge forwarding table\n");
267 err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode,
273 __vlan_add_flags(v, flags);
278 if (br_vlan_should_use(v)) {
279 br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid);
285 __vlan_vid_del(dev, br, v->vid);
287 br_vlan_put_master(masterv);
291 br_switchdev_port_vlan_del(dev, v->vid);
297 static int __vlan_del(struct net_bridge_vlan *v)
299 struct net_bridge_vlan *masterv = v;
300 struct net_bridge_vlan_group *vg;
301 struct net_bridge_port *p = NULL;
304 if (br_vlan_is_master(v)) {
305 vg = br_vlan_group(v->br);
308 vg = nbp_vlan_group(v->port);
312 __vlan_delete_pvid(vg, v->vid);
314 err = __vlan_vid_del(p->dev, p->br, v->vid);
318 err = br_switchdev_port_vlan_del(v->br->dev, v->vid);
319 if (err && err != -EOPNOTSUPP)
324 if (br_vlan_should_use(v)) {
325 v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY;
330 vlan_tunnel_info_del(vg, v);
331 rhashtable_remove_fast(&vg->vlan_hash, &v->vnode,
337 br_vlan_put_master(masterv);
342 static void __vlan_group_free(struct net_bridge_vlan_group *vg)
344 WARN_ON(!list_empty(&vg->vlan_list));
345 rhashtable_destroy(&vg->vlan_hash);
346 vlan_tunnel_deinit(vg);
350 static void __vlan_flush(struct net_bridge_vlan_group *vg)
352 struct net_bridge_vlan *vlan, *tmp;
354 __vlan_delete_pvid(vg, vg->pvid);
355 list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist)
359 struct sk_buff *br_handle_vlan(struct net_bridge *br,
360 const struct net_bridge_port *p,
361 struct net_bridge_vlan_group *vg,
364 struct br_vlan_stats *stats;
365 struct net_bridge_vlan *v;
368 /* If this packet was not filtered at input, let it pass */
369 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
372 /* At this point, we know that the frame was filtered and contains
373 * a valid vlan id. If the vlan id has untagged flag set,
374 * send untagged; otherwise, send tagged.
376 br_vlan_get_tag(skb, &vid);
377 v = br_vlan_find(vg, vid);
378 /* Vlan entry must be configured at this point. The
379 * only exception is the bridge is set in promisc mode and the
380 * packet is destined for the bridge device. In this case
381 * pass the packet as is.
383 if (!v || !br_vlan_should_use(v)) {
384 if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) {
391 if (br->vlan_stats_enabled) {
392 stats = this_cpu_ptr(v->stats);
393 u64_stats_update_begin(&stats->syncp);
394 stats->tx_bytes += skb->len;
396 u64_stats_update_end(&stats->syncp);
399 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
402 if (p && (p->flags & BR_VLAN_TUNNEL) &&
403 br_handle_egress_vlan_tunnel(skb, v)) {
411 /* Called under RCU */
412 static bool __allowed_ingress(const struct net_bridge *br,
413 struct net_bridge_vlan_group *vg,
414 struct sk_buff *skb, u16 *vid)
416 struct br_vlan_stats *stats;
417 struct net_bridge_vlan *v;
420 BR_INPUT_SKB_CB(skb)->vlan_filtered = true;
421 /* If vlan tx offload is disabled on bridge device and frame was
422 * sent from vlan device on the bridge device, it does not have
423 * HW accelerated vlan tag.
425 if (unlikely(!skb_vlan_tag_present(skb) &&
426 skb->protocol == br->vlan_proto)) {
427 skb = skb_vlan_untag(skb);
432 if (!br_vlan_get_tag(skb, vid)) {
434 if (skb->vlan_proto != br->vlan_proto) {
435 /* Protocol-mismatch, empty out vlan_tci for new tag */
436 skb_push(skb, ETH_HLEN);
437 skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto,
438 skb_vlan_tag_get(skb));
442 skb_pull(skb, ETH_HLEN);
443 skb_reset_mac_len(skb);
455 u16 pvid = br_get_pvid(vg);
457 /* Frame had a tag with VID 0 or did not have a tag.
458 * See if pvid is set on this port. That tells us which
459 * vlan untagged or priority-tagged traffic belongs to.
464 /* PVID is set on this port. Any untagged or priority-tagged
465 * ingress frame is considered to belong to this vlan.
469 /* Untagged Frame. */
470 __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid);
472 /* Priority-tagged Frame.
473 * At this point, We know that skb->vlan_tci had
474 * VLAN_TAG_PRESENT bit and its VID field was 0x000.
475 * We update only VID field and preserve PCP field.
477 skb->vlan_tci |= pvid;
479 /* if stats are disabled we can avoid the lookup */
480 if (!br->vlan_stats_enabled)
483 v = br_vlan_find(vg, *vid);
484 if (!v || !br_vlan_should_use(v))
487 if (br->vlan_stats_enabled) {
488 stats = this_cpu_ptr(v->stats);
489 u64_stats_update_begin(&stats->syncp);
490 stats->rx_bytes += skb->len;
492 u64_stats_update_end(&stats->syncp);
502 bool br_allowed_ingress(const struct net_bridge *br,
503 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
506 /* If VLAN filtering is disabled on the bridge, all packets are
509 if (!br->vlan_enabled) {
510 BR_INPUT_SKB_CB(skb)->vlan_filtered = false;
514 return __allowed_ingress(br, vg, skb, vid);
517 /* Called under RCU. */
518 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
519 const struct sk_buff *skb)
521 const struct net_bridge_vlan *v;
524 /* If this packet was not filtered at input, let it pass */
525 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
528 br_vlan_get_tag(skb, &vid);
529 v = br_vlan_find(vg, vid);
530 if (v && br_vlan_should_use(v))
536 /* Called under RCU */
537 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid)
539 struct net_bridge_vlan_group *vg;
540 struct net_bridge *br = p->br;
542 /* If filtering was disabled at input, let it pass. */
543 if (!br->vlan_enabled)
546 vg = nbp_vlan_group_rcu(p);
547 if (!vg || !vg->num_vlans)
550 if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto)
554 *vid = br_get_pvid(vg);
561 if (br_vlan_find(vg, *vid))
567 static int br_vlan_add_existing(struct net_bridge *br,
568 struct net_bridge_vlan_group *vg,
569 struct net_bridge_vlan *vlan,
570 u16 flags, bool *changed)
574 err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags);
575 if (err && err != -EOPNOTSUPP)
578 if (!br_vlan_is_brentry(vlan)) {
579 /* Trying to change flags of non-existent bridge vlan */
580 if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) {
584 /* It was only kept for port vlans, now make it real */
585 err = br_fdb_insert(br, NULL, br->dev->dev_addr,
588 br_err(br, "failed to insert local address into bridge forwarding table\n");
592 refcount_inc(&vlan->refcnt);
593 vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY;
598 if (__vlan_add_flags(vlan, flags))
605 br_switchdev_port_vlan_del(br->dev, vlan->vid);
609 /* Must be protected by RTNL.
610 * Must be called with vid in range from 1 to 4094 inclusive.
611 * changed must be true only if the vlan was created or updated
613 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed)
615 struct net_bridge_vlan_group *vg;
616 struct net_bridge_vlan *vlan;
622 vg = br_vlan_group(br);
623 vlan = br_vlan_find(vg, vid);
625 return br_vlan_add_existing(br, vg, vlan, flags, changed);
627 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
631 vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);
637 vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER;
638 vlan->flags &= ~BRIDGE_VLAN_INFO_PVID;
640 if (flags & BRIDGE_VLAN_INFO_BRENTRY)
641 refcount_set(&vlan->refcnt, 1);
642 ret = __vlan_add(vlan, flags);
644 free_percpu(vlan->stats);
653 /* Must be protected by RTNL.
654 * Must be called with vid in range from 1 to 4094 inclusive.
656 int br_vlan_delete(struct net_bridge *br, u16 vid)
658 struct net_bridge_vlan_group *vg;
659 struct net_bridge_vlan *v;
663 vg = br_vlan_group(br);
664 v = br_vlan_find(vg, vid);
665 if (!v || !br_vlan_is_brentry(v))
668 br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid);
669 br_fdb_delete_by_port(br, NULL, vid, 0);
671 vlan_tunnel_info_del(vg, v);
673 return __vlan_del(v);
676 void br_vlan_flush(struct net_bridge *br)
678 struct net_bridge_vlan_group *vg;
682 /* delete auto-added default pvid local fdb before flushing vlans
683 * otherwise it will be leaked on bridge device init failure
685 br_fdb_delete_by_port(br, NULL, 0, 1);
687 vg = br_vlan_group(br);
689 RCU_INIT_POINTER(br->vlgrp, NULL);
691 __vlan_group_free(vg);
694 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid)
699 return br_vlan_lookup(&vg->vlan_hash, vid);
702 /* Must be protected by RTNL. */
703 static void recalculate_group_addr(struct net_bridge *br)
705 if (br->group_addr_set)
708 spin_lock_bh(&br->lock);
709 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) {
710 /* Bridge Group Address */
711 br->group_addr[5] = 0x00;
712 } else { /* vlan_enabled && ETH_P_8021AD */
713 /* Provider Bridge Group Address */
714 br->group_addr[5] = 0x08;
716 spin_unlock_bh(&br->lock);
719 /* Must be protected by RTNL. */
720 void br_recalculate_fwd_mask(struct net_bridge *br)
722 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q))
723 br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT;
724 else /* vlan_enabled && ETH_P_8021AD */
725 br->group_fwd_mask_required = BR_GROUPFWD_8021AD &
726 ~(1u << br->group_addr[5]);
729 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
731 struct switchdev_attr attr = {
733 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
734 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
735 .u.vlan_filtering = val,
739 if (br->vlan_enabled == val)
742 err = switchdev_port_attr_set(br->dev, &attr);
743 if (err && err != -EOPNOTSUPP)
746 br->vlan_enabled = val;
747 br_manage_promisc(br);
748 recalculate_group_addr(br);
749 br_recalculate_fwd_mask(br);
754 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
756 return __br_vlan_filter_toggle(br, val);
759 bool br_vlan_enabled(const struct net_device *dev)
761 struct net_bridge *br = netdev_priv(dev);
763 return !!br->vlan_enabled;
765 EXPORT_SYMBOL_GPL(br_vlan_enabled);
767 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
770 struct net_bridge_port *p;
771 struct net_bridge_vlan *vlan;
772 struct net_bridge_vlan_group *vg;
775 if (br->vlan_proto == proto)
778 /* Add VLANs for the new proto to the device filter. */
779 list_for_each_entry(p, &br->port_list, list) {
780 vg = nbp_vlan_group(p);
781 list_for_each_entry(vlan, &vg->vlan_list, vlist) {
782 err = vlan_vid_add(p->dev, proto, vlan->vid);
788 oldproto = br->vlan_proto;
789 br->vlan_proto = proto;
791 recalculate_group_addr(br);
792 br_recalculate_fwd_mask(br);
794 /* Delete VLANs for the old proto from the device filter. */
795 list_for_each_entry(p, &br->port_list, list) {
796 vg = nbp_vlan_group(p);
797 list_for_each_entry(vlan, &vg->vlan_list, vlist)
798 vlan_vid_del(p->dev, oldproto, vlan->vid);
804 list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist)
805 vlan_vid_del(p->dev, proto, vlan->vid);
807 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
808 vg = nbp_vlan_group(p);
809 list_for_each_entry(vlan, &vg->vlan_list, vlist)
810 vlan_vid_del(p->dev, proto, vlan->vid);
816 int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
818 if (val != ETH_P_8021Q && val != ETH_P_8021AD)
819 return -EPROTONOSUPPORT;
821 return __br_vlan_set_proto(br, htons(val));
824 int br_vlan_set_stats(struct net_bridge *br, unsigned long val)
829 br->vlan_stats_enabled = val;
838 static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid)
840 struct net_bridge_vlan *v;
845 v = br_vlan_lookup(&vg->vlan_hash, vid);
846 if (v && br_vlan_should_use(v) &&
847 (v->flags & BRIDGE_VLAN_INFO_UNTAGGED))
853 static void br_vlan_disable_default_pvid(struct net_bridge *br)
855 struct net_bridge_port *p;
856 u16 pvid = br->default_pvid;
858 /* Disable default_pvid on all ports where it is still
861 if (vlan_default_pvid(br_vlan_group(br), pvid))
862 br_vlan_delete(br, pvid);
864 list_for_each_entry(p, &br->port_list, list) {
865 if (vlan_default_pvid(nbp_vlan_group(p), pvid))
866 nbp_vlan_delete(p, pvid);
869 br->default_pvid = 0;
872 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
874 const struct net_bridge_vlan *pvent;
875 struct net_bridge_vlan_group *vg;
876 struct net_bridge_port *p;
877 unsigned long *changed;
883 br_vlan_disable_default_pvid(br);
887 changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long),
892 old_pvid = br->default_pvid;
894 /* Update default_pvid config only if we do not conflict with
895 * user configuration.
897 vg = br_vlan_group(br);
898 pvent = br_vlan_find(vg, pvid);
899 if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) &&
900 (!pvent || !br_vlan_should_use(pvent))) {
901 err = br_vlan_add(br, pvid,
902 BRIDGE_VLAN_INFO_PVID |
903 BRIDGE_VLAN_INFO_UNTAGGED |
904 BRIDGE_VLAN_INFO_BRENTRY,
908 br_vlan_delete(br, old_pvid);
912 list_for_each_entry(p, &br->port_list, list) {
913 /* Update default_pvid config only if we do not conflict with
914 * user configuration.
916 vg = nbp_vlan_group(p);
918 !vlan_default_pvid(vg, old_pvid)) ||
919 br_vlan_find(vg, pvid))
922 err = nbp_vlan_add(p, pvid,
923 BRIDGE_VLAN_INFO_PVID |
924 BRIDGE_VLAN_INFO_UNTAGGED,
928 nbp_vlan_delete(p, old_pvid);
929 set_bit(p->port_no, changed);
932 br->default_pvid = pvid;
939 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
940 if (!test_bit(p->port_no, changed))
944 nbp_vlan_add(p, old_pvid,
945 BRIDGE_VLAN_INFO_PVID |
946 BRIDGE_VLAN_INFO_UNTAGGED,
948 nbp_vlan_delete(p, pvid);
951 if (test_bit(0, changed)) {
953 br_vlan_add(br, old_pvid,
954 BRIDGE_VLAN_INFO_PVID |
955 BRIDGE_VLAN_INFO_UNTAGGED |
956 BRIDGE_VLAN_INFO_BRENTRY,
958 br_vlan_delete(br, pvid);
963 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val)
968 if (val >= VLAN_VID_MASK)
971 if (pvid == br->default_pvid)
974 /* Only allow default pvid change when filtering is disabled */
975 if (br->vlan_enabled) {
976 pr_info_once("Please disable vlan filtering to change default_pvid\n");
980 err = __br_vlan_set_default_pvid(br, pvid);
985 int br_vlan_init(struct net_bridge *br)
987 struct net_bridge_vlan_group *vg;
991 vg = kzalloc(sizeof(*vg), GFP_KERNEL);
994 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
997 ret = vlan_tunnel_init(vg);
999 goto err_tunnel_init;
1000 INIT_LIST_HEAD(&vg->vlan_list);
1001 br->vlan_proto = htons(ETH_P_8021Q);
1002 br->default_pvid = 1;
1003 rcu_assign_pointer(br->vlgrp, vg);
1004 ret = br_vlan_add(br, 1,
1005 BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED |
1006 BRIDGE_VLAN_INFO_BRENTRY, &changed);
1014 vlan_tunnel_deinit(vg);
1016 rhashtable_destroy(&vg->vlan_hash);
1023 int nbp_vlan_init(struct net_bridge_port *p)
1025 struct switchdev_attr attr = {
1026 .orig_dev = p->br->dev,
1027 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
1028 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
1029 .u.vlan_filtering = p->br->vlan_enabled,
1031 struct net_bridge_vlan_group *vg;
1034 vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL);
1038 ret = switchdev_port_attr_set(p->dev, &attr);
1039 if (ret && ret != -EOPNOTSUPP)
1040 goto err_vlan_enabled;
1042 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
1045 ret = vlan_tunnel_init(vg);
1047 goto err_tunnel_init;
1048 INIT_LIST_HEAD(&vg->vlan_list);
1049 rcu_assign_pointer(p->vlgrp, vg);
1050 if (p->br->default_pvid) {
1053 ret = nbp_vlan_add(p, p->br->default_pvid,
1054 BRIDGE_VLAN_INFO_PVID |
1055 BRIDGE_VLAN_INFO_UNTAGGED,
1064 RCU_INIT_POINTER(p->vlgrp, NULL);
1066 vlan_tunnel_deinit(vg);
1068 rhashtable_destroy(&vg->vlan_hash);
1076 /* Must be protected by RTNL.
1077 * Must be called with vid in range from 1 to 4094 inclusive.
1078 * changed must be true only if the vlan was created or updated
1080 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1083 struct net_bridge_vlan *vlan;
1089 vlan = br_vlan_find(nbp_vlan_group(port), vid);
1091 /* Pass the flags to the hardware bridge */
1092 ret = br_switchdev_port_vlan_add(port->dev, vid, flags);
1093 if (ret && ret != -EOPNOTSUPP)
1095 *changed = __vlan_add_flags(vlan, flags);
1100 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
1106 ret = __vlan_add(vlan, flags);
1115 /* Must be protected by RTNL.
1116 * Must be called with vid in range from 1 to 4094 inclusive.
1118 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1120 struct net_bridge_vlan *v;
1124 v = br_vlan_find(nbp_vlan_group(port), vid);
1127 br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid);
1128 br_fdb_delete_by_port(port->br, port, vid, 0);
1130 return __vlan_del(v);
1133 void nbp_vlan_flush(struct net_bridge_port *port)
1135 struct net_bridge_vlan_group *vg;
1139 vg = nbp_vlan_group(port);
1141 RCU_INIT_POINTER(port->vlgrp, NULL);
1143 __vlan_group_free(vg);
1146 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1147 struct br_vlan_stats *stats)
1151 memset(stats, 0, sizeof(*stats));
1152 for_each_possible_cpu(i) {
1153 u64 rxpackets, rxbytes, txpackets, txbytes;
1154 struct br_vlan_stats *cpu_stats;
1157 cpu_stats = per_cpu_ptr(v->stats, i);
1159 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
1160 rxpackets = cpu_stats->rx_packets;
1161 rxbytes = cpu_stats->rx_bytes;
1162 txbytes = cpu_stats->tx_bytes;
1163 txpackets = cpu_stats->tx_packets;
1164 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
1166 stats->rx_packets += rxpackets;
1167 stats->rx_bytes += rxbytes;
1168 stats->tx_bytes += txbytes;
1169 stats->tx_packets += txpackets;
1173 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
1175 struct net_bridge_vlan_group *vg;
1178 if (netif_is_bridge_master(dev))
1179 vg = br_vlan_group(netdev_priv(dev));
1183 *p_pvid = br_get_pvid(vg);
1186 EXPORT_SYMBOL_GPL(br_vlan_get_pvid);
1188 int br_vlan_get_info(const struct net_device *dev, u16 vid,
1189 struct bridge_vlan_info *p_vinfo)
1191 struct net_bridge_vlan_group *vg;
1192 struct net_bridge_vlan *v;
1193 struct net_bridge_port *p;
1196 p = br_port_get_check_rtnl(dev);
1198 vg = nbp_vlan_group(p);
1199 else if (netif_is_bridge_master(dev))
1200 vg = br_vlan_group(netdev_priv(dev));
1204 v = br_vlan_find(vg, vid);
1209 p_vinfo->flags = v->flags;
1212 EXPORT_SYMBOL_GPL(br_vlan_get_info);