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 void __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid)
44 static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid)
53 static void __vlan_add_flags(struct net_bridge_vlan *v, u16 flags)
55 struct net_bridge_vlan_group *vg;
57 if (br_vlan_is_master(v))
58 vg = br_vlan_group(v->br);
60 vg = nbp_vlan_group(v->port);
62 if (flags & BRIDGE_VLAN_INFO_PVID)
63 __vlan_add_pvid(vg, v->vid);
65 __vlan_delete_pvid(vg, v->vid);
67 if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
68 v->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
70 v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED;
73 static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br,
76 struct switchdev_obj_port_vlan v = {
78 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
85 /* Try switchdev op first. In case it is not supported, fallback to
88 err = switchdev_port_obj_add(dev, &v.obj);
89 if (err == -EOPNOTSUPP)
90 return vlan_vid_add(dev, br->vlan_proto, vid);
94 static void __vlan_add_list(struct net_bridge_vlan *v)
96 struct net_bridge_vlan_group *vg;
97 struct list_head *headp, *hpos;
98 struct net_bridge_vlan *vent;
100 if (br_vlan_is_master(v))
101 vg = br_vlan_group(v->br);
103 vg = nbp_vlan_group(v->port);
105 headp = &vg->vlan_list;
106 list_for_each_prev(hpos, headp) {
107 vent = list_entry(hpos, struct net_bridge_vlan, vlist);
108 if (v->vid < vent->vid)
113 list_add_rcu(&v->vlist, hpos);
116 static void __vlan_del_list(struct net_bridge_vlan *v)
118 list_del_rcu(&v->vlist);
121 static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
124 struct switchdev_obj_port_vlan v = {
126 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
132 /* Try switchdev op first. In case it is not supported, fallback to
135 err = switchdev_port_obj_del(dev, &v.obj);
136 if (err == -EOPNOTSUPP) {
137 vlan_vid_del(dev, br->vlan_proto, vid);
143 /* Returns a master vlan, if it didn't exist it gets created. In all cases a
144 * a reference is taken to the master vlan before returning.
146 static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid)
148 struct net_bridge_vlan_group *vg;
149 struct net_bridge_vlan *masterv;
151 vg = br_vlan_group(br);
152 masterv = br_vlan_find(vg, vid);
154 /* missing global ctx, create it now */
155 if (br_vlan_add(br, vid, 0))
157 masterv = br_vlan_find(vg, vid);
158 if (WARN_ON(!masterv))
160 refcount_set(&masterv->refcnt, 1);
163 refcount_inc(&masterv->refcnt);
168 static void br_master_vlan_rcu_free(struct rcu_head *rcu)
170 struct net_bridge_vlan *v;
172 v = container_of(rcu, struct net_bridge_vlan, rcu);
173 WARN_ON(!br_vlan_is_master(v));
174 free_percpu(v->stats);
179 static void br_vlan_put_master(struct net_bridge_vlan *masterv)
181 struct net_bridge_vlan_group *vg;
183 if (!br_vlan_is_master(masterv))
186 vg = br_vlan_group(masterv->br);
187 if (refcount_dec_and_test(&masterv->refcnt)) {
188 rhashtable_remove_fast(&vg->vlan_hash,
189 &masterv->vnode, br_vlan_rht_params);
190 __vlan_del_list(masterv);
191 call_rcu(&masterv->rcu, br_master_vlan_rcu_free);
195 /* This is the shared VLAN add function which works for both ports and bridge
196 * devices. There are four possible calls to this function in terms of the
198 * 1. vlan is being added on a port (no master flags, global entry exists)
199 * 2. vlan is being added on a bridge (both master and brentry flags)
200 * 3. vlan is being added on a port, but a global entry didn't exist which
201 * is being created right now (master flag set, brentry flag unset), the
202 * global entry is used for global per-vlan features, but not for filtering
203 * 4. same as 3 but with both master and brentry flags set so the entry
204 * will be used for filtering in both the port and the bridge
206 static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
208 struct net_bridge_vlan *masterv = NULL;
209 struct net_bridge_port *p = NULL;
210 struct net_bridge_vlan_group *vg;
211 struct net_device *dev;
212 struct net_bridge *br;
215 if (br_vlan_is_master(v)) {
218 vg = br_vlan_group(br);
223 vg = nbp_vlan_group(p);
227 /* Add VLAN to the device filter if it is supported.
228 * This ensures tagged traffic enters the bridge when
229 * promiscuous mode is disabled by br_manage_promisc().
231 err = __vlan_vid_add(dev, br, v->vid, flags);
235 /* need to work on the master vlan too */
236 if (flags & BRIDGE_VLAN_INFO_MASTER) {
237 err = br_vlan_add(br, v->vid, flags |
238 BRIDGE_VLAN_INFO_BRENTRY);
243 masterv = br_vlan_get_master(br, v->vid);
249 v->stats = masterv->stats;
252 /* Add the dev mac and count the vlan only if it's usable */
253 if (br_vlan_should_use(v)) {
254 err = br_fdb_insert(br, p, dev->dev_addr, v->vid);
256 br_err(br, "failed insert local address into bridge forwarding table\n");
262 err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode,
268 __vlan_add_flags(v, flags);
273 if (br_vlan_should_use(v)) {
274 br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid);
280 __vlan_vid_del(dev, br, v->vid);
282 br_vlan_put_master(masterv);
290 static int __vlan_del(struct net_bridge_vlan *v)
292 struct net_bridge_vlan *masterv = v;
293 struct net_bridge_vlan_group *vg;
294 struct net_bridge_port *p = NULL;
297 if (br_vlan_is_master(v)) {
298 vg = br_vlan_group(v->br);
301 vg = nbp_vlan_group(v->port);
305 __vlan_delete_pvid(vg, v->vid);
307 err = __vlan_vid_del(p->dev, p->br, v->vid);
312 if (br_vlan_should_use(v)) {
313 v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY;
318 vlan_tunnel_info_del(vg, v);
319 rhashtable_remove_fast(&vg->vlan_hash, &v->vnode,
325 br_vlan_put_master(masterv);
330 static void __vlan_group_free(struct net_bridge_vlan_group *vg)
332 WARN_ON(!list_empty(&vg->vlan_list));
333 rhashtable_destroy(&vg->vlan_hash);
334 vlan_tunnel_deinit(vg);
338 static void __vlan_flush(struct net_bridge_vlan_group *vg)
340 struct net_bridge_vlan *vlan, *tmp;
342 __vlan_delete_pvid(vg, vg->pvid);
343 list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist)
347 struct sk_buff *br_handle_vlan(struct net_bridge *br,
348 const struct net_bridge_port *p,
349 struct net_bridge_vlan_group *vg,
352 struct br_vlan_stats *stats;
353 struct net_bridge_vlan *v;
356 /* If this packet was not filtered at input, let it pass */
357 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
360 /* At this point, we know that the frame was filtered and contains
361 * a valid vlan id. If the vlan id has untagged flag set,
362 * send untagged; otherwise, send tagged.
364 br_vlan_get_tag(skb, &vid);
365 v = br_vlan_find(vg, vid);
366 /* Vlan entry must be configured at this point. The
367 * only exception is the bridge is set in promisc mode and the
368 * packet is destined for the bridge device. In this case
369 * pass the packet as is.
371 if (!v || !br_vlan_should_use(v)) {
372 if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) {
379 if (br->vlan_stats_enabled) {
380 stats = this_cpu_ptr(v->stats);
381 u64_stats_update_begin(&stats->syncp);
382 stats->tx_bytes += skb->len;
384 u64_stats_update_end(&stats->syncp);
387 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
390 if (p && (p->flags & BR_VLAN_TUNNEL) &&
391 br_handle_egress_vlan_tunnel(skb, v)) {
399 /* Called under RCU */
400 static bool __allowed_ingress(const struct net_bridge *br,
401 struct net_bridge_vlan_group *vg,
402 struct sk_buff *skb, u16 *vid)
404 struct br_vlan_stats *stats;
405 struct net_bridge_vlan *v;
408 BR_INPUT_SKB_CB(skb)->vlan_filtered = true;
409 /* If vlan tx offload is disabled on bridge device and frame was
410 * sent from vlan device on the bridge device, it does not have
411 * HW accelerated vlan tag.
413 if (unlikely(!skb_vlan_tag_present(skb) &&
414 skb->protocol == br->vlan_proto)) {
415 skb = skb_vlan_untag(skb);
420 if (!br_vlan_get_tag(skb, vid)) {
422 if (skb->vlan_proto != br->vlan_proto) {
423 /* Protocol-mismatch, empty out vlan_tci for new tag */
424 skb_push(skb, ETH_HLEN);
425 skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto,
426 skb_vlan_tag_get(skb));
430 skb_pull(skb, ETH_HLEN);
431 skb_reset_mac_len(skb);
443 u16 pvid = br_get_pvid(vg);
445 /* Frame had a tag with VID 0 or did not have a tag.
446 * See if pvid is set on this port. That tells us which
447 * vlan untagged or priority-tagged traffic belongs to.
452 /* PVID is set on this port. Any untagged or priority-tagged
453 * ingress frame is considered to belong to this vlan.
457 /* Untagged Frame. */
458 __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid);
460 /* Priority-tagged Frame.
461 * At this point, We know that skb->vlan_tci had
462 * VLAN_TAG_PRESENT bit and its VID field was 0x000.
463 * We update only VID field and preserve PCP field.
465 skb->vlan_tci |= pvid;
467 /* if stats are disabled we can avoid the lookup */
468 if (!br->vlan_stats_enabled)
471 v = br_vlan_find(vg, *vid);
472 if (!v || !br_vlan_should_use(v))
475 if (br->vlan_stats_enabled) {
476 stats = this_cpu_ptr(v->stats);
477 u64_stats_update_begin(&stats->syncp);
478 stats->rx_bytes += skb->len;
480 u64_stats_update_end(&stats->syncp);
490 bool br_allowed_ingress(const struct net_bridge *br,
491 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
494 /* If VLAN filtering is disabled on the bridge, all packets are
497 if (!br->vlan_enabled) {
498 BR_INPUT_SKB_CB(skb)->vlan_filtered = false;
502 return __allowed_ingress(br, vg, skb, vid);
505 /* Called under RCU. */
506 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
507 const struct sk_buff *skb)
509 const struct net_bridge_vlan *v;
512 /* If this packet was not filtered at input, let it pass */
513 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
516 br_vlan_get_tag(skb, &vid);
517 v = br_vlan_find(vg, vid);
518 if (v && br_vlan_should_use(v))
524 /* Called under RCU */
525 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid)
527 struct net_bridge_vlan_group *vg;
528 struct net_bridge *br = p->br;
530 /* If filtering was disabled at input, let it pass. */
531 if (!br->vlan_enabled)
534 vg = nbp_vlan_group_rcu(p);
535 if (!vg || !vg->num_vlans)
538 if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto)
542 *vid = br_get_pvid(vg);
549 if (br_vlan_find(vg, *vid))
555 /* Must be protected by RTNL.
556 * Must be called with vid in range from 1 to 4094 inclusive.
558 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
560 struct net_bridge_vlan_group *vg;
561 struct net_bridge_vlan *vlan;
566 vg = br_vlan_group(br);
567 vlan = br_vlan_find(vg, vid);
569 if (!br_vlan_is_brentry(vlan)) {
570 /* Trying to change flags of non-existent bridge vlan */
571 if (!(flags & BRIDGE_VLAN_INFO_BRENTRY))
573 /* It was only kept for port vlans, now make it real */
574 ret = br_fdb_insert(br, NULL, br->dev->dev_addr,
577 br_err(br, "failed insert local address into bridge forwarding table\n");
580 refcount_inc(&vlan->refcnt);
581 vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY;
584 __vlan_add_flags(vlan, flags);
588 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
592 vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);
598 vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER;
599 vlan->flags &= ~BRIDGE_VLAN_INFO_PVID;
601 if (flags & BRIDGE_VLAN_INFO_BRENTRY)
602 refcount_set(&vlan->refcnt, 1);
603 ret = __vlan_add(vlan, flags);
605 free_percpu(vlan->stats);
612 /* Must be protected by RTNL.
613 * Must be called with vid in range from 1 to 4094 inclusive.
615 int br_vlan_delete(struct net_bridge *br, u16 vid)
617 struct net_bridge_vlan_group *vg;
618 struct net_bridge_vlan *v;
622 vg = br_vlan_group(br);
623 v = br_vlan_find(vg, vid);
624 if (!v || !br_vlan_is_brentry(v))
627 br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid);
628 br_fdb_delete_by_port(br, NULL, vid, 0);
630 vlan_tunnel_info_del(vg, v);
632 return __vlan_del(v);
635 void br_vlan_flush(struct net_bridge *br)
637 struct net_bridge_vlan_group *vg;
641 /* delete auto-added default pvid local fdb before flushing vlans
642 * otherwise it will be leaked on bridge device init failure
644 br_fdb_delete_by_port(br, NULL, 0, 1);
646 vg = br_vlan_group(br);
648 RCU_INIT_POINTER(br->vlgrp, NULL);
650 __vlan_group_free(vg);
653 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid)
658 return br_vlan_lookup(&vg->vlan_hash, vid);
661 /* Must be protected by RTNL. */
662 static void recalculate_group_addr(struct net_bridge *br)
664 if (br->group_addr_set)
667 spin_lock_bh(&br->lock);
668 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) {
669 /* Bridge Group Address */
670 br->group_addr[5] = 0x00;
671 } else { /* vlan_enabled && ETH_P_8021AD */
672 /* Provider Bridge Group Address */
673 br->group_addr[5] = 0x08;
675 spin_unlock_bh(&br->lock);
678 /* Must be protected by RTNL. */
679 void br_recalculate_fwd_mask(struct net_bridge *br)
681 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q))
682 br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT;
683 else /* vlan_enabled && ETH_P_8021AD */
684 br->group_fwd_mask_required = BR_GROUPFWD_8021AD &
685 ~(1u << br->group_addr[5]);
688 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
690 struct switchdev_attr attr = {
692 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
693 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
694 .u.vlan_filtering = val,
698 if (br->vlan_enabled == val)
701 err = switchdev_port_attr_set(br->dev, &attr);
702 if (err && err != -EOPNOTSUPP)
705 br->vlan_enabled = val;
706 br_manage_promisc(br);
707 recalculate_group_addr(br);
708 br_recalculate_fwd_mask(br);
713 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
715 return __br_vlan_filter_toggle(br, val);
718 bool br_vlan_enabled(const struct net_device *dev)
720 struct net_bridge *br = netdev_priv(dev);
722 return !!br->vlan_enabled;
724 EXPORT_SYMBOL_GPL(br_vlan_enabled);
726 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
729 struct net_bridge_port *p;
730 struct net_bridge_vlan *vlan;
731 struct net_bridge_vlan_group *vg;
734 if (br->vlan_proto == proto)
737 /* Add VLANs for the new proto to the device filter. */
738 list_for_each_entry(p, &br->port_list, list) {
739 vg = nbp_vlan_group(p);
740 list_for_each_entry(vlan, &vg->vlan_list, vlist) {
741 err = vlan_vid_add(p->dev, proto, vlan->vid);
747 oldproto = br->vlan_proto;
748 br->vlan_proto = proto;
750 recalculate_group_addr(br);
751 br_recalculate_fwd_mask(br);
753 /* Delete VLANs for the old proto from the device filter. */
754 list_for_each_entry(p, &br->port_list, list) {
755 vg = nbp_vlan_group(p);
756 list_for_each_entry(vlan, &vg->vlan_list, vlist)
757 vlan_vid_del(p->dev, oldproto, vlan->vid);
763 list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist)
764 vlan_vid_del(p->dev, proto, vlan->vid);
766 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
767 vg = nbp_vlan_group(p);
768 list_for_each_entry(vlan, &vg->vlan_list, vlist)
769 vlan_vid_del(p->dev, proto, vlan->vid);
775 int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
777 if (val != ETH_P_8021Q && val != ETH_P_8021AD)
778 return -EPROTONOSUPPORT;
780 return __br_vlan_set_proto(br, htons(val));
783 int br_vlan_set_stats(struct net_bridge *br, unsigned long val)
788 br->vlan_stats_enabled = val;
797 static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid)
799 struct net_bridge_vlan *v;
804 v = br_vlan_lookup(&vg->vlan_hash, vid);
805 if (v && br_vlan_should_use(v) &&
806 (v->flags & BRIDGE_VLAN_INFO_UNTAGGED))
812 static void br_vlan_disable_default_pvid(struct net_bridge *br)
814 struct net_bridge_port *p;
815 u16 pvid = br->default_pvid;
817 /* Disable default_pvid on all ports where it is still
820 if (vlan_default_pvid(br_vlan_group(br), pvid))
821 br_vlan_delete(br, pvid);
823 list_for_each_entry(p, &br->port_list, list) {
824 if (vlan_default_pvid(nbp_vlan_group(p), pvid))
825 nbp_vlan_delete(p, pvid);
828 br->default_pvid = 0;
831 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
833 const struct net_bridge_vlan *pvent;
834 struct net_bridge_vlan_group *vg;
835 struct net_bridge_port *p;
838 unsigned long *changed;
841 br_vlan_disable_default_pvid(br);
845 changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long),
850 old_pvid = br->default_pvid;
852 /* Update default_pvid config only if we do not conflict with
853 * user configuration.
855 vg = br_vlan_group(br);
856 pvent = br_vlan_find(vg, pvid);
857 if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) &&
858 (!pvent || !br_vlan_should_use(pvent))) {
859 err = br_vlan_add(br, pvid,
860 BRIDGE_VLAN_INFO_PVID |
861 BRIDGE_VLAN_INFO_UNTAGGED |
862 BRIDGE_VLAN_INFO_BRENTRY);
865 br_vlan_delete(br, old_pvid);
869 list_for_each_entry(p, &br->port_list, list) {
870 /* Update default_pvid config only if we do not conflict with
871 * user configuration.
873 vg = nbp_vlan_group(p);
875 !vlan_default_pvid(vg, old_pvid)) ||
876 br_vlan_find(vg, pvid))
879 err = nbp_vlan_add(p, pvid,
880 BRIDGE_VLAN_INFO_PVID |
881 BRIDGE_VLAN_INFO_UNTAGGED);
884 nbp_vlan_delete(p, old_pvid);
885 set_bit(p->port_no, changed);
888 br->default_pvid = pvid;
895 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
896 if (!test_bit(p->port_no, changed))
900 nbp_vlan_add(p, old_pvid,
901 BRIDGE_VLAN_INFO_PVID |
902 BRIDGE_VLAN_INFO_UNTAGGED);
903 nbp_vlan_delete(p, pvid);
906 if (test_bit(0, changed)) {
908 br_vlan_add(br, old_pvid,
909 BRIDGE_VLAN_INFO_PVID |
910 BRIDGE_VLAN_INFO_UNTAGGED |
911 BRIDGE_VLAN_INFO_BRENTRY);
912 br_vlan_delete(br, pvid);
917 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val)
922 if (val >= VLAN_VID_MASK)
925 if (pvid == br->default_pvid)
928 /* Only allow default pvid change when filtering is disabled */
929 if (br->vlan_enabled) {
930 pr_info_once("Please disable vlan filtering to change default_pvid\n");
934 err = __br_vlan_set_default_pvid(br, pvid);
939 int br_vlan_init(struct net_bridge *br)
941 struct net_bridge_vlan_group *vg;
944 vg = kzalloc(sizeof(*vg), GFP_KERNEL);
947 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
950 ret = vlan_tunnel_init(vg);
952 goto err_tunnel_init;
953 INIT_LIST_HEAD(&vg->vlan_list);
954 br->vlan_proto = htons(ETH_P_8021Q);
955 br->default_pvid = 1;
956 rcu_assign_pointer(br->vlgrp, vg);
957 ret = br_vlan_add(br, 1,
958 BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED |
959 BRIDGE_VLAN_INFO_BRENTRY);
967 vlan_tunnel_deinit(vg);
969 rhashtable_destroy(&vg->vlan_hash);
976 int nbp_vlan_init(struct net_bridge_port *p)
978 struct switchdev_attr attr = {
979 .orig_dev = p->br->dev,
980 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
981 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
982 .u.vlan_filtering = p->br->vlan_enabled,
984 struct net_bridge_vlan_group *vg;
987 vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL);
991 ret = switchdev_port_attr_set(p->dev, &attr);
992 if (ret && ret != -EOPNOTSUPP)
993 goto err_vlan_enabled;
995 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
998 ret = vlan_tunnel_init(vg);
1000 goto err_tunnel_init;
1001 INIT_LIST_HEAD(&vg->vlan_list);
1002 rcu_assign_pointer(p->vlgrp, vg);
1003 if (p->br->default_pvid) {
1004 ret = nbp_vlan_add(p, p->br->default_pvid,
1005 BRIDGE_VLAN_INFO_PVID |
1006 BRIDGE_VLAN_INFO_UNTAGGED);
1014 RCU_INIT_POINTER(p->vlgrp, NULL);
1016 vlan_tunnel_deinit(vg);
1018 rhashtable_destroy(&vg->vlan_hash);
1026 /* Must be protected by RTNL.
1027 * Must be called with vid in range from 1 to 4094 inclusive.
1029 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
1031 struct switchdev_obj_port_vlan v = {
1032 .obj.orig_dev = port->dev,
1033 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
1038 struct net_bridge_vlan *vlan;
1043 vlan = br_vlan_find(nbp_vlan_group(port), vid);
1045 /* Pass the flags to the hardware bridge */
1046 ret = switchdev_port_obj_add(port->dev, &v.obj);
1047 if (ret && ret != -EOPNOTSUPP)
1049 __vlan_add_flags(vlan, flags);
1053 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
1059 ret = __vlan_add(vlan, flags);
1066 /* Must be protected by RTNL.
1067 * Must be called with vid in range from 1 to 4094 inclusive.
1069 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1071 struct net_bridge_vlan *v;
1075 v = br_vlan_find(nbp_vlan_group(port), vid);
1078 br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid);
1079 br_fdb_delete_by_port(port->br, port, vid, 0);
1081 return __vlan_del(v);
1084 void nbp_vlan_flush(struct net_bridge_port *port)
1086 struct net_bridge_vlan_group *vg;
1090 vg = nbp_vlan_group(port);
1092 RCU_INIT_POINTER(port->vlgrp, NULL);
1094 __vlan_group_free(vg);
1097 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1098 struct br_vlan_stats *stats)
1102 memset(stats, 0, sizeof(*stats));
1103 for_each_possible_cpu(i) {
1104 u64 rxpackets, rxbytes, txpackets, txbytes;
1105 struct br_vlan_stats *cpu_stats;
1108 cpu_stats = per_cpu_ptr(v->stats, i);
1110 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
1111 rxpackets = cpu_stats->rx_packets;
1112 rxbytes = cpu_stats->rx_bytes;
1113 txbytes = cpu_stats->tx_bytes;
1114 txpackets = cpu_stats->tx_packets;
1115 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
1117 stats->rx_packets += rxpackets;
1118 stats->rx_bytes += rxbytes;
1119 stats->tx_bytes += txbytes;
1120 stats->tx_packets += txpackets;