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,
85 struct switchdev_obj_port_vlan v = {
87 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
94 /* Try switchdev op first. In case it is not supported, fallback to
97 err = switchdev_port_obj_add(dev, &v.obj);
98 if (err == -EOPNOTSUPP)
99 return vlan_vid_add(dev, br->vlan_proto, vid);
103 static void __vlan_add_list(struct net_bridge_vlan *v)
105 struct net_bridge_vlan_group *vg;
106 struct list_head *headp, *hpos;
107 struct net_bridge_vlan *vent;
109 if (br_vlan_is_master(v))
110 vg = br_vlan_group(v->br);
112 vg = nbp_vlan_group(v->port);
114 headp = &vg->vlan_list;
115 list_for_each_prev(hpos, headp) {
116 vent = list_entry(hpos, struct net_bridge_vlan, vlist);
117 if (v->vid < vent->vid)
122 list_add_rcu(&v->vlist, hpos);
125 static void __vlan_del_list(struct net_bridge_vlan *v)
127 list_del_rcu(&v->vlist);
130 static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
133 struct switchdev_obj_port_vlan v = {
135 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
141 /* Try switchdev op first. In case it is not supported, fallback to
144 err = switchdev_port_obj_del(dev, &v.obj);
145 if (err == -EOPNOTSUPP) {
146 vlan_vid_del(dev, br->vlan_proto, vid);
152 /* Returns a master vlan, if it didn't exist it gets created. In all cases a
153 * a reference is taken to the master vlan before returning.
155 static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid)
157 struct net_bridge_vlan_group *vg;
158 struct net_bridge_vlan *masterv;
160 vg = br_vlan_group(br);
161 masterv = br_vlan_find(vg, vid);
165 /* missing global ctx, create it now */
166 if (br_vlan_add(br, vid, 0, &changed))
168 masterv = br_vlan_find(vg, vid);
169 if (WARN_ON(!masterv))
171 refcount_set(&masterv->refcnt, 1);
174 refcount_inc(&masterv->refcnt);
179 static void br_master_vlan_rcu_free(struct rcu_head *rcu)
181 struct net_bridge_vlan *v;
183 v = container_of(rcu, struct net_bridge_vlan, rcu);
184 WARN_ON(!br_vlan_is_master(v));
185 free_percpu(v->stats);
190 static void br_vlan_put_master(struct net_bridge_vlan *masterv)
192 struct net_bridge_vlan_group *vg;
194 if (!br_vlan_is_master(masterv))
197 vg = br_vlan_group(masterv->br);
198 if (refcount_dec_and_test(&masterv->refcnt)) {
199 rhashtable_remove_fast(&vg->vlan_hash,
200 &masterv->vnode, br_vlan_rht_params);
201 __vlan_del_list(masterv);
202 call_rcu(&masterv->rcu, br_master_vlan_rcu_free);
206 /* This is the shared VLAN add function which works for both ports and bridge
207 * devices. There are four possible calls to this function in terms of the
209 * 1. vlan is being added on a port (no master flags, global entry exists)
210 * 2. vlan is being added on a bridge (both master and brentry flags)
211 * 3. vlan is being added on a port, but a global entry didn't exist which
212 * is being created right now (master flag set, brentry flag unset), the
213 * global entry is used for global per-vlan features, but not for filtering
214 * 4. same as 3 but with both master and brentry flags set so the entry
215 * will be used for filtering in both the port and the bridge
217 static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
219 struct net_bridge_vlan *masterv = NULL;
220 struct net_bridge_port *p = NULL;
221 struct net_bridge_vlan_group *vg;
222 struct net_device *dev;
223 struct net_bridge *br;
226 if (br_vlan_is_master(v)) {
229 vg = br_vlan_group(br);
234 vg = nbp_vlan_group(p);
238 /* Add VLAN to the device filter if it is supported.
239 * This ensures tagged traffic enters the bridge when
240 * promiscuous mode is disabled by br_manage_promisc().
242 err = __vlan_vid_add(dev, br, v->vid, flags);
246 /* need to work on the master vlan too */
247 if (flags & BRIDGE_VLAN_INFO_MASTER) {
250 err = br_vlan_add(br, v->vid,
251 flags | BRIDGE_VLAN_INFO_BRENTRY,
257 masterv = br_vlan_get_master(br, v->vid);
261 v->stats = masterv->stats;
264 /* Add the dev mac and count the vlan only if it's usable */
265 if (br_vlan_should_use(v)) {
266 err = br_fdb_insert(br, p, dev->dev_addr, v->vid);
268 br_err(br, "failed insert local address into bridge forwarding table\n");
274 err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode,
280 __vlan_add_flags(v, flags);
285 if (br_vlan_should_use(v)) {
286 br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid);
292 __vlan_vid_del(dev, br, v->vid);
294 br_vlan_put_master(masterv);
302 static int __vlan_del(struct net_bridge_vlan *v)
304 struct net_bridge_vlan *masterv = v;
305 struct net_bridge_vlan_group *vg;
306 struct net_bridge_port *p = NULL;
309 if (br_vlan_is_master(v)) {
310 vg = br_vlan_group(v->br);
313 vg = nbp_vlan_group(v->port);
317 __vlan_delete_pvid(vg, v->vid);
319 err = __vlan_vid_del(p->dev, p->br, v->vid);
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 /* Must be protected by RTNL.
568 * Must be called with vid in range from 1 to 4094 inclusive.
569 * changed must be true only if the vlan was created or updated
571 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed)
573 struct net_bridge_vlan_group *vg;
574 struct net_bridge_vlan *vlan;
580 vg = br_vlan_group(br);
581 vlan = br_vlan_find(vg, vid);
583 if (!br_vlan_is_brentry(vlan)) {
584 /* Trying to change flags of non-existent bridge vlan */
585 if (!(flags & BRIDGE_VLAN_INFO_BRENTRY))
587 /* It was only kept for port vlans, now make it real */
588 ret = br_fdb_insert(br, NULL, br->dev->dev_addr,
591 br_err(br, "failed insert local address into bridge forwarding table\n");
594 refcount_inc(&vlan->refcnt);
595 vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY;
599 if (__vlan_add_flags(vlan, flags))
605 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
609 vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);
615 vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER;
616 vlan->flags &= ~BRIDGE_VLAN_INFO_PVID;
618 if (flags & BRIDGE_VLAN_INFO_BRENTRY)
619 refcount_set(&vlan->refcnt, 1);
620 ret = __vlan_add(vlan, flags);
622 free_percpu(vlan->stats);
631 /* Must be protected by RTNL.
632 * Must be called with vid in range from 1 to 4094 inclusive.
634 int br_vlan_delete(struct net_bridge *br, u16 vid)
636 struct net_bridge_vlan_group *vg;
637 struct net_bridge_vlan *v;
641 vg = br_vlan_group(br);
642 v = br_vlan_find(vg, vid);
643 if (!v || !br_vlan_is_brentry(v))
646 br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid);
647 br_fdb_delete_by_port(br, NULL, vid, 0);
649 vlan_tunnel_info_del(vg, v);
651 return __vlan_del(v);
654 void br_vlan_flush(struct net_bridge *br)
656 struct net_bridge_vlan_group *vg;
660 vg = br_vlan_group(br);
662 RCU_INIT_POINTER(br->vlgrp, NULL);
664 __vlan_group_free(vg);
667 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid)
672 return br_vlan_lookup(&vg->vlan_hash, vid);
675 /* Must be protected by RTNL. */
676 static void recalculate_group_addr(struct net_bridge *br)
678 if (br->group_addr_set)
681 spin_lock_bh(&br->lock);
682 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) {
683 /* Bridge Group Address */
684 br->group_addr[5] = 0x00;
685 } else { /* vlan_enabled && ETH_P_8021AD */
686 /* Provider Bridge Group Address */
687 br->group_addr[5] = 0x08;
689 spin_unlock_bh(&br->lock);
692 /* Must be protected by RTNL. */
693 void br_recalculate_fwd_mask(struct net_bridge *br)
695 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q))
696 br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT;
697 else /* vlan_enabled && ETH_P_8021AD */
698 br->group_fwd_mask_required = BR_GROUPFWD_8021AD &
699 ~(1u << br->group_addr[5]);
702 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
704 struct switchdev_attr attr = {
706 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
707 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
708 .u.vlan_filtering = val,
712 if (br->vlan_enabled == val)
715 err = switchdev_port_attr_set(br->dev, &attr);
716 if (err && err != -EOPNOTSUPP)
719 br->vlan_enabled = val;
720 br_manage_promisc(br);
721 recalculate_group_addr(br);
722 br_recalculate_fwd_mask(br);
727 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
729 return __br_vlan_filter_toggle(br, val);
732 bool br_vlan_enabled(const struct net_device *dev)
734 struct net_bridge *br = netdev_priv(dev);
736 return !!br->vlan_enabled;
738 EXPORT_SYMBOL_GPL(br_vlan_enabled);
740 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
743 struct net_bridge_port *p;
744 struct net_bridge_vlan *vlan;
745 struct net_bridge_vlan_group *vg;
748 if (br->vlan_proto == proto)
751 /* Add VLANs for the new proto to the device filter. */
752 list_for_each_entry(p, &br->port_list, list) {
753 vg = nbp_vlan_group(p);
754 list_for_each_entry(vlan, &vg->vlan_list, vlist) {
755 err = vlan_vid_add(p->dev, proto, vlan->vid);
761 oldproto = br->vlan_proto;
762 br->vlan_proto = proto;
764 recalculate_group_addr(br);
765 br_recalculate_fwd_mask(br);
767 /* Delete VLANs for the old proto from the device filter. */
768 list_for_each_entry(p, &br->port_list, list) {
769 vg = nbp_vlan_group(p);
770 list_for_each_entry(vlan, &vg->vlan_list, vlist)
771 vlan_vid_del(p->dev, oldproto, vlan->vid);
777 list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist)
778 vlan_vid_del(p->dev, proto, vlan->vid);
780 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
781 vg = nbp_vlan_group(p);
782 list_for_each_entry(vlan, &vg->vlan_list, vlist)
783 vlan_vid_del(p->dev, proto, vlan->vid);
789 int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
791 if (val != ETH_P_8021Q && val != ETH_P_8021AD)
792 return -EPROTONOSUPPORT;
794 return __br_vlan_set_proto(br, htons(val));
797 int br_vlan_set_stats(struct net_bridge *br, unsigned long val)
802 br->vlan_stats_enabled = val;
811 static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid)
813 struct net_bridge_vlan *v;
818 v = br_vlan_lookup(&vg->vlan_hash, vid);
819 if (v && br_vlan_should_use(v) &&
820 (v->flags & BRIDGE_VLAN_INFO_UNTAGGED))
826 static void br_vlan_disable_default_pvid(struct net_bridge *br)
828 struct net_bridge_port *p;
829 u16 pvid = br->default_pvid;
831 /* Disable default_pvid on all ports where it is still
834 if (vlan_default_pvid(br_vlan_group(br), pvid))
835 br_vlan_delete(br, pvid);
837 list_for_each_entry(p, &br->port_list, list) {
838 if (vlan_default_pvid(nbp_vlan_group(p), pvid))
839 nbp_vlan_delete(p, pvid);
842 br->default_pvid = 0;
845 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
847 const struct net_bridge_vlan *pvent;
848 struct net_bridge_vlan_group *vg;
849 struct net_bridge_port *p;
850 unsigned long *changed;
856 br_vlan_disable_default_pvid(br);
860 changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long),
865 old_pvid = br->default_pvid;
867 /* Update default_pvid config only if we do not conflict with
868 * user configuration.
870 vg = br_vlan_group(br);
871 pvent = br_vlan_find(vg, pvid);
872 if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) &&
873 (!pvent || !br_vlan_should_use(pvent))) {
874 err = br_vlan_add(br, pvid,
875 BRIDGE_VLAN_INFO_PVID |
876 BRIDGE_VLAN_INFO_UNTAGGED |
877 BRIDGE_VLAN_INFO_BRENTRY,
881 br_vlan_delete(br, old_pvid);
885 list_for_each_entry(p, &br->port_list, list) {
886 /* Update default_pvid config only if we do not conflict with
887 * user configuration.
889 vg = nbp_vlan_group(p);
891 !vlan_default_pvid(vg, old_pvid)) ||
892 br_vlan_find(vg, pvid))
895 err = nbp_vlan_add(p, pvid,
896 BRIDGE_VLAN_INFO_PVID |
897 BRIDGE_VLAN_INFO_UNTAGGED,
901 nbp_vlan_delete(p, old_pvid);
902 set_bit(p->port_no, changed);
905 br->default_pvid = pvid;
912 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
913 if (!test_bit(p->port_no, changed))
917 nbp_vlan_add(p, old_pvid,
918 BRIDGE_VLAN_INFO_PVID |
919 BRIDGE_VLAN_INFO_UNTAGGED,
921 nbp_vlan_delete(p, pvid);
924 if (test_bit(0, changed)) {
926 br_vlan_add(br, old_pvid,
927 BRIDGE_VLAN_INFO_PVID |
928 BRIDGE_VLAN_INFO_UNTAGGED |
929 BRIDGE_VLAN_INFO_BRENTRY,
931 br_vlan_delete(br, pvid);
936 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val)
941 if (val >= VLAN_VID_MASK)
944 if (pvid == br->default_pvid)
947 /* Only allow default pvid change when filtering is disabled */
948 if (br->vlan_enabled) {
949 pr_info_once("Please disable vlan filtering to change default_pvid\n");
953 err = __br_vlan_set_default_pvid(br, pvid);
958 int br_vlan_init(struct net_bridge *br)
960 struct net_bridge_vlan_group *vg;
964 vg = kzalloc(sizeof(*vg), GFP_KERNEL);
967 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
970 ret = vlan_tunnel_init(vg);
972 goto err_tunnel_init;
973 INIT_LIST_HEAD(&vg->vlan_list);
974 br->vlan_proto = htons(ETH_P_8021Q);
975 br->default_pvid = 1;
976 rcu_assign_pointer(br->vlgrp, vg);
977 ret = br_vlan_add(br, 1,
978 BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED |
979 BRIDGE_VLAN_INFO_BRENTRY, &changed);
987 vlan_tunnel_deinit(vg);
989 rhashtable_destroy(&vg->vlan_hash);
996 int nbp_vlan_init(struct net_bridge_port *p)
998 struct switchdev_attr attr = {
999 .orig_dev = p->br->dev,
1000 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
1001 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
1002 .u.vlan_filtering = p->br->vlan_enabled,
1004 struct net_bridge_vlan_group *vg;
1007 vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL);
1011 ret = switchdev_port_attr_set(p->dev, &attr);
1012 if (ret && ret != -EOPNOTSUPP)
1013 goto err_vlan_enabled;
1015 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
1018 ret = vlan_tunnel_init(vg);
1020 goto err_tunnel_init;
1021 INIT_LIST_HEAD(&vg->vlan_list);
1022 rcu_assign_pointer(p->vlgrp, vg);
1023 if (p->br->default_pvid) {
1026 ret = nbp_vlan_add(p, p->br->default_pvid,
1027 BRIDGE_VLAN_INFO_PVID |
1028 BRIDGE_VLAN_INFO_UNTAGGED,
1037 RCU_INIT_POINTER(p->vlgrp, NULL);
1039 vlan_tunnel_deinit(vg);
1041 rhashtable_destroy(&vg->vlan_hash);
1049 /* Must be protected by RTNL.
1050 * Must be called with vid in range from 1 to 4094 inclusive.
1051 * changed must be true only if the vlan was created or updated
1053 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
1056 struct switchdev_obj_port_vlan v = {
1057 .obj.orig_dev = port->dev,
1058 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
1063 struct net_bridge_vlan *vlan;
1069 vlan = br_vlan_find(nbp_vlan_group(port), vid);
1071 /* Pass the flags to the hardware bridge */
1072 ret = switchdev_port_obj_add(port->dev, &v.obj);
1073 if (ret && ret != -EOPNOTSUPP)
1075 *changed = __vlan_add_flags(vlan, flags);
1080 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
1086 ret = __vlan_add(vlan, flags);
1095 /* Must be protected by RTNL.
1096 * Must be called with vid in range from 1 to 4094 inclusive.
1098 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1100 struct net_bridge_vlan *v;
1104 v = br_vlan_find(nbp_vlan_group(port), vid);
1107 br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid);
1108 br_fdb_delete_by_port(port->br, port, vid, 0);
1110 return __vlan_del(v);
1113 void nbp_vlan_flush(struct net_bridge_port *port)
1115 struct net_bridge_vlan_group *vg;
1119 vg = nbp_vlan_group(port);
1121 RCU_INIT_POINTER(port->vlgrp, NULL);
1123 __vlan_group_free(vg);
1126 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1127 struct br_vlan_stats *stats)
1131 memset(stats, 0, sizeof(*stats));
1132 for_each_possible_cpu(i) {
1133 u64 rxpackets, rxbytes, txpackets, txbytes;
1134 struct br_vlan_stats *cpu_stats;
1137 cpu_stats = per_cpu_ptr(v->stats, i);
1139 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
1140 rxpackets = cpu_stats->rx_packets;
1141 rxbytes = cpu_stats->rx_bytes;
1142 txbytes = cpu_stats->tx_bytes;
1143 txpackets = cpu_stats->tx_packets;
1144 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
1146 stats->rx_packets += rxpackets;
1147 stats->rx_bytes += rxbytes;
1148 stats->tx_bytes += txbytes;
1149 stats->tx_packets += txpackets;