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))
161 atomic_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 (atomic_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) {
235 err = br_vlan_add(br, v->vid, flags |
236 BRIDGE_VLAN_INFO_BRENTRY);
241 masterv = br_vlan_get_master(br, v->vid);
245 v->stats = masterv->stats;
248 /* Add the dev mac and count the vlan only if it's usable */
249 if (br_vlan_should_use(v)) {
250 err = br_fdb_insert(br, p, dev->dev_addr, v->vid);
252 br_err(br, "failed insert local address into bridge forwarding table\n");
258 err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode,
264 __vlan_add_flags(v, flags);
269 if (br_vlan_should_use(v)) {
270 br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid);
276 __vlan_vid_del(dev, br, v->vid);
278 br_vlan_put_master(masterv);
286 static int __vlan_del(struct net_bridge_vlan *v)
288 struct net_bridge_vlan *masterv = v;
289 struct net_bridge_vlan_group *vg;
290 struct net_bridge_port *p = NULL;
293 if (br_vlan_is_master(v)) {
294 vg = br_vlan_group(v->br);
297 vg = nbp_vlan_group(v->port);
301 __vlan_delete_pvid(vg, v->vid);
303 err = __vlan_vid_del(p->dev, p->br, v->vid);
308 if (br_vlan_should_use(v)) {
309 v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY;
314 vlan_tunnel_info_del(vg, v);
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);
330 vlan_tunnel_deinit(vg);
334 static void __vlan_flush(struct net_bridge_vlan_group *vg)
336 struct net_bridge_vlan *vlan, *tmp;
338 __vlan_delete_pvid(vg, vg->pvid);
339 list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist)
343 struct sk_buff *br_handle_vlan(struct net_bridge *br,
344 const struct net_bridge_port *p,
345 struct net_bridge_vlan_group *vg,
348 struct br_vlan_stats *stats;
349 struct net_bridge_vlan *v;
352 /* If this packet was not filtered at input, let it pass */
353 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
356 /* At this point, we know that the frame was filtered and contains
357 * a valid vlan id. If the vlan id has untagged flag set,
358 * send untagged; otherwise, send tagged.
360 br_vlan_get_tag(skb, &vid);
361 v = br_vlan_find(vg, vid);
362 /* Vlan entry must be configured at this point. The
363 * only exception is the bridge is set in promisc mode and the
364 * packet is destined for the bridge device. In this case
365 * pass the packet as is.
367 if (!v || !br_vlan_should_use(v)) {
368 if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) {
375 if (br->vlan_stats_enabled) {
376 stats = this_cpu_ptr(v->stats);
377 u64_stats_update_begin(&stats->syncp);
378 stats->tx_bytes += skb->len;
380 u64_stats_update_end(&stats->syncp);
383 if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
386 if (p && (p->flags & BR_VLAN_TUNNEL) &&
387 br_handle_egress_vlan_tunnel(skb, v)) {
395 /* Called under RCU */
396 static bool __allowed_ingress(const struct net_bridge *br,
397 struct net_bridge_vlan_group *vg,
398 struct sk_buff *skb, u16 *vid)
400 struct br_vlan_stats *stats;
401 struct net_bridge_vlan *v;
404 BR_INPUT_SKB_CB(skb)->vlan_filtered = true;
405 /* If vlan tx offload is disabled on bridge device and frame was
406 * sent from vlan device on the bridge device, it does not have
407 * HW accelerated vlan tag.
409 if (unlikely(!skb_vlan_tag_present(skb) &&
410 skb->protocol == br->vlan_proto)) {
411 skb = skb_vlan_untag(skb);
416 if (!br_vlan_get_tag(skb, vid)) {
418 if (skb->vlan_proto != br->vlan_proto) {
419 /* Protocol-mismatch, empty out vlan_tci for new tag */
420 skb_push(skb, ETH_HLEN);
421 skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto,
422 skb_vlan_tag_get(skb));
426 skb_pull(skb, ETH_HLEN);
427 skb_reset_mac_len(skb);
439 u16 pvid = br_get_pvid(vg);
441 /* Frame had a tag with VID 0 or did not have a tag.
442 * See if pvid is set on this port. That tells us which
443 * vlan untagged or priority-tagged traffic belongs to.
448 /* PVID is set on this port. Any untagged or priority-tagged
449 * ingress frame is considered to belong to this vlan.
453 /* Untagged Frame. */
454 __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid);
456 /* Priority-tagged Frame.
457 * At this point, We know that skb->vlan_tci had
458 * VLAN_TAG_PRESENT bit and its VID field was 0x000.
459 * We update only VID field and preserve PCP field.
461 skb->vlan_tci |= pvid;
463 /* if stats are disabled we can avoid the lookup */
464 if (!br->vlan_stats_enabled)
467 v = br_vlan_find(vg, *vid);
468 if (!v || !br_vlan_should_use(v))
471 if (br->vlan_stats_enabled) {
472 stats = this_cpu_ptr(v->stats);
473 u64_stats_update_begin(&stats->syncp);
474 stats->rx_bytes += skb->len;
476 u64_stats_update_end(&stats->syncp);
486 bool br_allowed_ingress(const struct net_bridge *br,
487 struct net_bridge_vlan_group *vg, struct sk_buff *skb,
490 /* If VLAN filtering is disabled on the bridge, all packets are
493 if (!br->vlan_enabled) {
494 BR_INPUT_SKB_CB(skb)->vlan_filtered = false;
498 return __allowed_ingress(br, vg, skb, vid);
501 /* Called under RCU. */
502 bool br_allowed_egress(struct net_bridge_vlan_group *vg,
503 const struct sk_buff *skb)
505 const struct net_bridge_vlan *v;
508 /* If this packet was not filtered at input, let it pass */
509 if (!BR_INPUT_SKB_CB(skb)->vlan_filtered)
512 br_vlan_get_tag(skb, &vid);
513 v = br_vlan_find(vg, vid);
514 if (v && br_vlan_should_use(v))
520 /* Called under RCU */
521 bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid)
523 struct net_bridge_vlan_group *vg;
524 struct net_bridge *br = p->br;
526 /* If filtering was disabled at input, let it pass. */
527 if (!br->vlan_enabled)
530 vg = nbp_vlan_group_rcu(p);
531 if (!vg || !vg->num_vlans)
534 if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto)
538 *vid = br_get_pvid(vg);
545 if (br_vlan_find(vg, *vid))
551 /* Must be protected by RTNL.
552 * Must be called with vid in range from 1 to 4094 inclusive.
554 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
556 struct net_bridge_vlan_group *vg;
557 struct net_bridge_vlan *vlan;
562 vg = br_vlan_group(br);
563 vlan = br_vlan_find(vg, vid);
565 if (!br_vlan_is_brentry(vlan)) {
566 /* Trying to change flags of non-existent bridge vlan */
567 if (!(flags & BRIDGE_VLAN_INFO_BRENTRY))
569 /* It was only kept for port vlans, now make it real */
570 ret = br_fdb_insert(br, NULL, br->dev->dev_addr,
573 br_err(br, "failed insert local address into bridge forwarding table\n");
576 atomic_inc(&vlan->refcnt);
577 vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY;
580 __vlan_add_flags(vlan, flags);
584 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
588 vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);
594 vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER;
595 vlan->flags &= ~BRIDGE_VLAN_INFO_PVID;
597 if (flags & BRIDGE_VLAN_INFO_BRENTRY)
598 atomic_set(&vlan->refcnt, 1);
599 ret = __vlan_add(vlan, flags);
601 free_percpu(vlan->stats);
608 /* Must be protected by RTNL.
609 * Must be called with vid in range from 1 to 4094 inclusive.
611 int br_vlan_delete(struct net_bridge *br, u16 vid)
613 struct net_bridge_vlan_group *vg;
614 struct net_bridge_vlan *v;
618 vg = br_vlan_group(br);
619 v = br_vlan_find(vg, vid);
620 if (!v || !br_vlan_is_brentry(v))
623 br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid);
624 br_fdb_delete_by_port(br, NULL, vid, 0);
626 vlan_tunnel_info_del(vg, v);
628 return __vlan_del(v);
631 void br_vlan_flush(struct net_bridge *br)
633 struct net_bridge_vlan_group *vg;
637 vg = br_vlan_group(br);
639 RCU_INIT_POINTER(br->vlgrp, NULL);
641 __vlan_group_free(vg);
644 struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid)
649 return br_vlan_lookup(&vg->vlan_hash, vid);
652 /* Must be protected by RTNL. */
653 static void recalculate_group_addr(struct net_bridge *br)
655 if (br->group_addr_set)
658 spin_lock_bh(&br->lock);
659 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) {
660 /* Bridge Group Address */
661 br->group_addr[5] = 0x00;
662 } else { /* vlan_enabled && ETH_P_8021AD */
663 /* Provider Bridge Group Address */
664 br->group_addr[5] = 0x08;
666 spin_unlock_bh(&br->lock);
669 /* Must be protected by RTNL. */
670 void br_recalculate_fwd_mask(struct net_bridge *br)
672 if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q))
673 br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT;
674 else /* vlan_enabled && ETH_P_8021AD */
675 br->group_fwd_mask_required = BR_GROUPFWD_8021AD &
676 ~(1u << br->group_addr[5]);
679 int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
681 struct switchdev_attr attr = {
683 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
684 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
685 .u.vlan_filtering = val,
689 if (br->vlan_enabled == val)
692 err = switchdev_port_attr_set(br->dev, &attr);
693 if (err && err != -EOPNOTSUPP)
696 br->vlan_enabled = val;
697 br_manage_promisc(br);
698 recalculate_group_addr(br);
699 br_recalculate_fwd_mask(br);
704 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
706 return __br_vlan_filter_toggle(br, val);
709 int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
712 struct net_bridge_port *p;
713 struct net_bridge_vlan *vlan;
714 struct net_bridge_vlan_group *vg;
717 if (br->vlan_proto == proto)
720 /* Add VLANs for the new proto to the device filter. */
721 list_for_each_entry(p, &br->port_list, list) {
722 vg = nbp_vlan_group(p);
723 list_for_each_entry(vlan, &vg->vlan_list, vlist) {
724 err = vlan_vid_add(p->dev, proto, vlan->vid);
730 oldproto = br->vlan_proto;
731 br->vlan_proto = proto;
733 recalculate_group_addr(br);
734 br_recalculate_fwd_mask(br);
736 /* Delete VLANs for the old proto from the device filter. */
737 list_for_each_entry(p, &br->port_list, list) {
738 vg = nbp_vlan_group(p);
739 list_for_each_entry(vlan, &vg->vlan_list, vlist)
740 vlan_vid_del(p->dev, oldproto, vlan->vid);
746 list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist)
747 vlan_vid_del(p->dev, proto, vlan->vid);
749 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
750 vg = nbp_vlan_group(p);
751 list_for_each_entry(vlan, &vg->vlan_list, vlist)
752 vlan_vid_del(p->dev, proto, vlan->vid);
758 int br_vlan_set_proto(struct net_bridge *br, unsigned long val)
760 if (val != ETH_P_8021Q && val != ETH_P_8021AD)
761 return -EPROTONOSUPPORT;
763 return __br_vlan_set_proto(br, htons(val));
766 int br_vlan_set_stats(struct net_bridge *br, unsigned long val)
771 br->vlan_stats_enabled = val;
780 static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid)
782 struct net_bridge_vlan *v;
787 v = br_vlan_lookup(&vg->vlan_hash, vid);
788 if (v && br_vlan_should_use(v) &&
789 (v->flags & BRIDGE_VLAN_INFO_UNTAGGED))
795 static void br_vlan_disable_default_pvid(struct net_bridge *br)
797 struct net_bridge_port *p;
798 u16 pvid = br->default_pvid;
800 /* Disable default_pvid on all ports where it is still
803 if (vlan_default_pvid(br_vlan_group(br), pvid))
804 br_vlan_delete(br, pvid);
806 list_for_each_entry(p, &br->port_list, list) {
807 if (vlan_default_pvid(nbp_vlan_group(p), pvid))
808 nbp_vlan_delete(p, pvid);
811 br->default_pvid = 0;
814 int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
816 const struct net_bridge_vlan *pvent;
817 struct net_bridge_vlan_group *vg;
818 struct net_bridge_port *p;
821 unsigned long *changed;
824 br_vlan_disable_default_pvid(br);
828 changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long),
833 old_pvid = br->default_pvid;
835 /* Update default_pvid config only if we do not conflict with
836 * user configuration.
838 vg = br_vlan_group(br);
839 pvent = br_vlan_find(vg, pvid);
840 if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) &&
841 (!pvent || !br_vlan_should_use(pvent))) {
842 err = br_vlan_add(br, pvid,
843 BRIDGE_VLAN_INFO_PVID |
844 BRIDGE_VLAN_INFO_UNTAGGED |
845 BRIDGE_VLAN_INFO_BRENTRY);
848 br_vlan_delete(br, old_pvid);
852 list_for_each_entry(p, &br->port_list, list) {
853 /* Update default_pvid config only if we do not conflict with
854 * user configuration.
856 vg = nbp_vlan_group(p);
858 !vlan_default_pvid(vg, old_pvid)) ||
859 br_vlan_find(vg, pvid))
862 err = nbp_vlan_add(p, pvid,
863 BRIDGE_VLAN_INFO_PVID |
864 BRIDGE_VLAN_INFO_UNTAGGED);
867 nbp_vlan_delete(p, old_pvid);
868 set_bit(p->port_no, changed);
871 br->default_pvid = pvid;
878 list_for_each_entry_continue_reverse(p, &br->port_list, list) {
879 if (!test_bit(p->port_no, changed))
883 nbp_vlan_add(p, old_pvid,
884 BRIDGE_VLAN_INFO_PVID |
885 BRIDGE_VLAN_INFO_UNTAGGED);
886 nbp_vlan_delete(p, pvid);
889 if (test_bit(0, changed)) {
891 br_vlan_add(br, old_pvid,
892 BRIDGE_VLAN_INFO_PVID |
893 BRIDGE_VLAN_INFO_UNTAGGED |
894 BRIDGE_VLAN_INFO_BRENTRY);
895 br_vlan_delete(br, pvid);
900 int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val)
905 if (val >= VLAN_VID_MASK)
908 if (pvid == br->default_pvid)
911 /* Only allow default pvid change when filtering is disabled */
912 if (br->vlan_enabled) {
913 pr_info_once("Please disable vlan filtering to change default_pvid\n");
917 err = __br_vlan_set_default_pvid(br, pvid);
922 int br_vlan_init(struct net_bridge *br)
924 struct net_bridge_vlan_group *vg;
927 vg = kzalloc(sizeof(*vg), GFP_KERNEL);
930 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
933 ret = vlan_tunnel_init(vg);
935 goto err_tunnel_init;
936 INIT_LIST_HEAD(&vg->vlan_list);
937 br->vlan_proto = htons(ETH_P_8021Q);
938 br->default_pvid = 1;
939 rcu_assign_pointer(br->vlgrp, vg);
940 ret = br_vlan_add(br, 1,
941 BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED |
942 BRIDGE_VLAN_INFO_BRENTRY);
950 vlan_tunnel_deinit(vg);
952 rhashtable_destroy(&vg->vlan_hash);
959 int nbp_vlan_init(struct net_bridge_port *p)
961 struct switchdev_attr attr = {
962 .orig_dev = p->br->dev,
963 .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
964 .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
965 .u.vlan_filtering = p->br->vlan_enabled,
967 struct net_bridge_vlan_group *vg;
970 vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL);
974 ret = switchdev_port_attr_set(p->dev, &attr);
975 if (ret && ret != -EOPNOTSUPP)
976 goto err_vlan_enabled;
978 ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params);
981 ret = vlan_tunnel_init(vg);
983 goto err_tunnel_init;
984 INIT_LIST_HEAD(&vg->vlan_list);
985 rcu_assign_pointer(p->vlgrp, vg);
986 if (p->br->default_pvid) {
987 ret = nbp_vlan_add(p, p->br->default_pvid,
988 BRIDGE_VLAN_INFO_PVID |
989 BRIDGE_VLAN_INFO_UNTAGGED);
997 RCU_INIT_POINTER(p->vlgrp, NULL);
999 vlan_tunnel_deinit(vg);
1002 rhashtable_destroy(&vg->vlan_hash);
1009 /* Must be protected by RTNL.
1010 * Must be called with vid in range from 1 to 4094 inclusive.
1012 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
1014 struct switchdev_obj_port_vlan v = {
1015 .obj.orig_dev = port->dev,
1016 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
1021 struct net_bridge_vlan *vlan;
1026 vlan = br_vlan_find(nbp_vlan_group(port), vid);
1028 /* Pass the flags to the hardware bridge */
1029 ret = switchdev_port_obj_add(port->dev, &v.obj);
1030 if (ret && ret != -EOPNOTSUPP)
1032 __vlan_add_flags(vlan, flags);
1036 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
1042 ret = __vlan_add(vlan, flags);
1049 /* Must be protected by RTNL.
1050 * Must be called with vid in range from 1 to 4094 inclusive.
1052 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
1054 struct net_bridge_vlan *v;
1058 v = br_vlan_find(nbp_vlan_group(port), vid);
1061 br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid);
1062 br_fdb_delete_by_port(port->br, port, vid, 0);
1064 return __vlan_del(v);
1067 void nbp_vlan_flush(struct net_bridge_port *port)
1069 struct net_bridge_vlan_group *vg;
1073 vg = nbp_vlan_group(port);
1075 RCU_INIT_POINTER(port->vlgrp, NULL);
1077 __vlan_group_free(vg);
1080 void br_vlan_get_stats(const struct net_bridge_vlan *v,
1081 struct br_vlan_stats *stats)
1085 memset(stats, 0, sizeof(*stats));
1086 for_each_possible_cpu(i) {
1087 u64 rxpackets, rxbytes, txpackets, txbytes;
1088 struct br_vlan_stats *cpu_stats;
1091 cpu_stats = per_cpu_ptr(v->stats, i);
1093 start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
1094 rxpackets = cpu_stats->rx_packets;
1095 rxbytes = cpu_stats->rx_bytes;
1096 txbytes = cpu_stats->tx_bytes;
1097 txpackets = cpu_stats->tx_packets;
1098 } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
1100 stats->rx_packets += rxpackets;
1101 stats->rx_bytes += rxbytes;
1102 stats->tx_bytes += txbytes;
1103 stats->tx_packets += txpackets;