1243a2e63SVlad Yasevich #include <linux/kernel.h> 2243a2e63SVlad Yasevich #include <linux/netdevice.h> 3243a2e63SVlad Yasevich #include <linux/rtnetlink.h> 4243a2e63SVlad Yasevich #include <linux/slab.h> 5243a2e63SVlad Yasevich 6243a2e63SVlad Yasevich #include "br_private.h" 7243a2e63SVlad Yasevich 8552406c4SVlad Yasevich static void __vlan_add_pvid(struct net_port_vlans *v, u16 vid) 9552406c4SVlad Yasevich { 10552406c4SVlad Yasevich if (v->pvid == vid) 11552406c4SVlad Yasevich return; 12552406c4SVlad Yasevich 13552406c4SVlad Yasevich smp_wmb(); 14552406c4SVlad Yasevich v->pvid = vid; 15552406c4SVlad Yasevich } 16552406c4SVlad Yasevich 17552406c4SVlad Yasevich static void __vlan_delete_pvid(struct net_port_vlans *v, u16 vid) 18552406c4SVlad Yasevich { 19552406c4SVlad Yasevich if (v->pvid != vid) 20552406c4SVlad Yasevich return; 21552406c4SVlad Yasevich 22552406c4SVlad Yasevich smp_wmb(); 23552406c4SVlad Yasevich v->pvid = 0; 24552406c4SVlad Yasevich } 25552406c4SVlad Yasevich 2635e03f3aSVlad Yasevich static void __vlan_add_flags(struct net_port_vlans *v, u16 vid, u16 flags) 2735e03f3aSVlad Yasevich { 2835e03f3aSVlad Yasevich if (flags & BRIDGE_VLAN_INFO_PVID) 2935e03f3aSVlad Yasevich __vlan_add_pvid(v, vid); 3035e03f3aSVlad Yasevich 3135e03f3aSVlad Yasevich if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 3235e03f3aSVlad Yasevich set_bit(vid, v->untagged_bitmap); 3335e03f3aSVlad Yasevich } 3435e03f3aSVlad Yasevich 35552406c4SVlad Yasevich static int __vlan_add(struct net_port_vlans *v, u16 vid, u16 flags) 36243a2e63SVlad Yasevich { 3780d5c368SPatrick McHardy const struct net_device_ops *ops; 38bc9a25d2SVlad Yasevich struct net_bridge_port *p = NULL; 39bc9a25d2SVlad Yasevich struct net_bridge *br; 40bc9a25d2SVlad Yasevich struct net_device *dev; 41243a2e63SVlad Yasevich int err; 42243a2e63SVlad Yasevich 43552406c4SVlad Yasevich if (test_bit(vid, v->vlan_bitmap)) { 4435e03f3aSVlad Yasevich __vlan_add_flags(v, vid, flags); 45552406c4SVlad Yasevich return 0; 46552406c4SVlad Yasevich } 47243a2e63SVlad Yasevich 48bc9a25d2SVlad Yasevich if (v->port_idx) { 49bc9a25d2SVlad Yasevich p = v->parent.port; 50bc9a25d2SVlad Yasevich br = p->br; 51bc9a25d2SVlad Yasevich dev = p->dev; 52bc9a25d2SVlad Yasevich } else { 53bc9a25d2SVlad Yasevich br = v->parent.br; 54bc9a25d2SVlad Yasevich dev = br->dev; 55bc9a25d2SVlad Yasevich } 5680d5c368SPatrick McHardy ops = dev->netdev_ops; 57243a2e63SVlad Yasevich 58f646968fSPatrick McHardy if (p && (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) { 59243a2e63SVlad Yasevich /* Add VLAN to the device filter if it is supported. 60bc9a25d2SVlad Yasevich * Stricly speaking, this is not necessary now, since 61bc9a25d2SVlad Yasevich * devices are made promiscuous by the bridge, but if 62bc9a25d2SVlad Yasevich * that ever changes this code will allow tagged 63bc9a25d2SVlad Yasevich * traffic to enter the bridge. 64243a2e63SVlad Yasevich */ 6580d5c368SPatrick McHardy err = ops->ndo_vlan_rx_add_vid(dev, htons(ETH_P_8021Q), 6680d5c368SPatrick McHardy vid); 67243a2e63SVlad Yasevich if (err) 68243a2e63SVlad Yasevich return err; 69243a2e63SVlad Yasevich } 70bc9a25d2SVlad Yasevich 71bc9a25d2SVlad Yasevich err = br_fdb_insert(br, p, dev->dev_addr, vid); 72bc9a25d2SVlad Yasevich if (err) { 73bc9a25d2SVlad Yasevich br_err(br, "failed insert local address into bridge " 74bc9a25d2SVlad Yasevich "forwarding table\n"); 75bc9a25d2SVlad Yasevich goto out_filt; 76bc9a25d2SVlad Yasevich } 77bc9a25d2SVlad Yasevich 78243a2e63SVlad Yasevich set_bit(vid, v->vlan_bitmap); 796cbdceebSVlad Yasevich v->num_vlans++; 8035e03f3aSVlad Yasevich __vlan_add_flags(v, vid, flags); 81552406c4SVlad Yasevich 82243a2e63SVlad Yasevich return 0; 83bc9a25d2SVlad Yasevich 84bc9a25d2SVlad Yasevich out_filt: 85f646968fSPatrick McHardy if (p && (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) 8680d5c368SPatrick McHardy ops->ndo_vlan_rx_kill_vid(dev, htons(ETH_P_8021Q), vid); 87bc9a25d2SVlad Yasevich return err; 88243a2e63SVlad Yasevich } 89243a2e63SVlad Yasevich 90243a2e63SVlad Yasevich static int __vlan_del(struct net_port_vlans *v, u16 vid) 91243a2e63SVlad Yasevich { 92243a2e63SVlad Yasevich if (!test_bit(vid, v->vlan_bitmap)) 93243a2e63SVlad Yasevich return -EINVAL; 94243a2e63SVlad Yasevich 95552406c4SVlad Yasevich __vlan_delete_pvid(v, vid); 9635e03f3aSVlad Yasevich clear_bit(vid, v->untagged_bitmap); 97552406c4SVlad Yasevich 988adff41cSToshiaki Makita if (v->port_idx) { 99243a2e63SVlad Yasevich struct net_device *dev = v->parent.port->dev; 10080d5c368SPatrick McHardy const struct net_device_ops *ops = dev->netdev_ops; 101243a2e63SVlad Yasevich 102f646968fSPatrick McHardy if (dev->features & NETIF_F_HW_VLAN_CTAG_FILTER) 10380d5c368SPatrick McHardy ops->ndo_vlan_rx_kill_vid(dev, htons(ETH_P_8021Q), vid); 104243a2e63SVlad Yasevich } 105243a2e63SVlad Yasevich 106243a2e63SVlad Yasevich clear_bit(vid, v->vlan_bitmap); 1076cbdceebSVlad Yasevich v->num_vlans--; 108ef40b7efSToshiaki Makita if (bitmap_empty(v->vlan_bitmap, VLAN_N_VID)) { 109243a2e63SVlad Yasevich if (v->port_idx) 110243a2e63SVlad Yasevich rcu_assign_pointer(v->parent.port->vlan_info, NULL); 111243a2e63SVlad Yasevich else 112243a2e63SVlad Yasevich rcu_assign_pointer(v->parent.br->vlan_info, NULL); 113243a2e63SVlad Yasevich kfree_rcu(v, rcu); 114243a2e63SVlad Yasevich } 115243a2e63SVlad Yasevich return 0; 116243a2e63SVlad Yasevich } 117243a2e63SVlad Yasevich 118243a2e63SVlad Yasevich static void __vlan_flush(struct net_port_vlans *v) 119243a2e63SVlad Yasevich { 120552406c4SVlad Yasevich smp_wmb(); 121552406c4SVlad Yasevich v->pvid = 0; 122ef40b7efSToshiaki Makita bitmap_zero(v->vlan_bitmap, VLAN_N_VID); 123243a2e63SVlad Yasevich if (v->port_idx) 124243a2e63SVlad Yasevich rcu_assign_pointer(v->parent.port->vlan_info, NULL); 125243a2e63SVlad Yasevich else 126243a2e63SVlad Yasevich rcu_assign_pointer(v->parent.br->vlan_info, NULL); 127243a2e63SVlad Yasevich kfree_rcu(v, rcu); 128243a2e63SVlad Yasevich } 129243a2e63SVlad Yasevich 13078851988SVlad Yasevich /* Strip the tag from the packet. Will return skb with tci set 0. */ 13178851988SVlad Yasevich static struct sk_buff *br_vlan_untag(struct sk_buff *skb) 13278851988SVlad Yasevich { 13378851988SVlad Yasevich if (skb->protocol != htons(ETH_P_8021Q)) { 13478851988SVlad Yasevich skb->vlan_tci = 0; 13578851988SVlad Yasevich return skb; 13678851988SVlad Yasevich } 13778851988SVlad Yasevich 13878851988SVlad Yasevich skb->vlan_tci = 0; 13978851988SVlad Yasevich skb = vlan_untag(skb); 14078851988SVlad Yasevich if (skb) 14178851988SVlad Yasevich skb->vlan_tci = 0; 14278851988SVlad Yasevich 14378851988SVlad Yasevich return skb; 14478851988SVlad Yasevich } 14578851988SVlad Yasevich 14678851988SVlad Yasevich struct sk_buff *br_handle_vlan(struct net_bridge *br, 14778851988SVlad Yasevich const struct net_port_vlans *pv, 148a37b85c9SVlad Yasevich struct sk_buff *skb) 149a37b85c9SVlad Yasevich { 150a37b85c9SVlad Yasevich u16 vid; 151a37b85c9SVlad Yasevich 15278851988SVlad Yasevich if (!br->vlan_enabled) 15378851988SVlad Yasevich goto out; 15478851988SVlad Yasevich 15578851988SVlad Yasevich /* At this point, we know that the frame was filtered and contains 15635e03f3aSVlad Yasevich * a valid vlan id. If the vlan id is set in the untagged bitmap, 15778851988SVlad Yasevich * send untagged; otherwise, send taged. 15878851988SVlad Yasevich */ 15978851988SVlad Yasevich br_vlan_get_tag(skb, &vid); 16035e03f3aSVlad Yasevich if (test_bit(vid, pv->untagged_bitmap)) 16178851988SVlad Yasevich skb = br_vlan_untag(skb); 16278851988SVlad Yasevich else { 16378851988SVlad Yasevich /* Egress policy says "send tagged". If output device 16478851988SVlad Yasevich * is the bridge, we need to add the VLAN header 16578851988SVlad Yasevich * ourselves since we'll be going through the RX path. 16678851988SVlad Yasevich * Sending to ports puts the frame on the TX path and 16778851988SVlad Yasevich * we let dev_hard_start_xmit() add the header. 16878851988SVlad Yasevich */ 16978851988SVlad Yasevich if (skb->protocol != htons(ETH_P_8021Q) && 17078851988SVlad Yasevich pv->port_idx == 0) { 17178851988SVlad Yasevich /* vlan_put_tag expects skb->data to point to 17278851988SVlad Yasevich * mac header. 17378851988SVlad Yasevich */ 17478851988SVlad Yasevich skb_push(skb, ETH_HLEN); 17586a9bad3SPatrick McHardy skb = __vlan_put_tag(skb, skb->vlan_proto, skb->vlan_tci); 17678851988SVlad Yasevich if (!skb) 17778851988SVlad Yasevich goto out; 17878851988SVlad Yasevich /* put skb->data back to where it was */ 17978851988SVlad Yasevich skb_pull(skb, ETH_HLEN); 18078851988SVlad Yasevich skb->vlan_tci = 0; 18178851988SVlad Yasevich } 18278851988SVlad Yasevich } 18378851988SVlad Yasevich 18478851988SVlad Yasevich out: 18578851988SVlad Yasevich return skb; 18678851988SVlad Yasevich } 18778851988SVlad Yasevich 18878851988SVlad Yasevich /* Called under RCU */ 18978851988SVlad Yasevich bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, 19078851988SVlad Yasevich struct sk_buff *skb, u16 *vid) 19178851988SVlad Yasevich { 192b90356ceSToshiaki Makita int err; 193b90356ceSToshiaki Makita 194a37b85c9SVlad Yasevich /* If VLAN filtering is disabled on the bridge, all packets are 195a37b85c9SVlad Yasevich * permitted. 196a37b85c9SVlad Yasevich */ 197a37b85c9SVlad Yasevich if (!br->vlan_enabled) 198a37b85c9SVlad Yasevich return true; 199a37b85c9SVlad Yasevich 200a37b85c9SVlad Yasevich /* If there are no vlan in the permitted list, all packets are 201a37b85c9SVlad Yasevich * rejected. 202a37b85c9SVlad Yasevich */ 203a37b85c9SVlad Yasevich if (!v) 204a37b85c9SVlad Yasevich return false; 205a37b85c9SVlad Yasevich 206b90356ceSToshiaki Makita err = br_vlan_get_tag(skb, vid); 207b90356ceSToshiaki Makita if (!*vid) { 20878851988SVlad Yasevich u16 pvid = br_get_pvid(v); 20978851988SVlad Yasevich 210b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 211b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 212b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 21378851988SVlad Yasevich */ 21478851988SVlad Yasevich if (pvid == VLAN_N_VID) 21578851988SVlad Yasevich return false; 21678851988SVlad Yasevich 217b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 218b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 21978851988SVlad Yasevich */ 220b90356ceSToshiaki Makita if (likely(err)) 221b90356ceSToshiaki Makita /* Untagged Frame. */ 22286a9bad3SPatrick McHardy __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), pvid); 223b90356ceSToshiaki Makita else 224b90356ceSToshiaki Makita /* Priority-tagged Frame. 225b90356ceSToshiaki Makita * At this point, We know that skb->vlan_tci had 226b90356ceSToshiaki Makita * VLAN_TAG_PRESENT bit and its VID field was 0x000. 227b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 228b90356ceSToshiaki Makita */ 229b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 230b90356ceSToshiaki Makita 23178851988SVlad Yasevich return true; 23278851988SVlad Yasevich } 23378851988SVlad Yasevich 23478851988SVlad Yasevich /* Frame had a valid vlan tag. See if vlan is allowed */ 23578851988SVlad Yasevich if (test_bit(*vid, v->vlan_bitmap)) 236a37b85c9SVlad Yasevich return true; 237a37b85c9SVlad Yasevich 238a37b85c9SVlad Yasevich return false; 239a37b85c9SVlad Yasevich } 240a37b85c9SVlad Yasevich 24185f46c6bSVlad Yasevich /* Called under RCU. */ 24285f46c6bSVlad Yasevich bool br_allowed_egress(struct net_bridge *br, 24385f46c6bSVlad Yasevich const struct net_port_vlans *v, 24485f46c6bSVlad Yasevich const struct sk_buff *skb) 24585f46c6bSVlad Yasevich { 24685f46c6bSVlad Yasevich u16 vid; 24785f46c6bSVlad Yasevich 24885f46c6bSVlad Yasevich if (!br->vlan_enabled) 24985f46c6bSVlad Yasevich return true; 25085f46c6bSVlad Yasevich 25185f46c6bSVlad Yasevich if (!v) 25285f46c6bSVlad Yasevich return false; 25385f46c6bSVlad Yasevich 25485f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 25585f46c6bSVlad Yasevich if (test_bit(vid, v->vlan_bitmap)) 25685f46c6bSVlad Yasevich return true; 25785f46c6bSVlad Yasevich 25885f46c6bSVlad Yasevich return false; 25985f46c6bSVlad Yasevich } 26085f46c6bSVlad Yasevich 2618adff41cSToshiaki Makita /* Must be protected by RTNL. 2628adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 2638adff41cSToshiaki Makita */ 264552406c4SVlad Yasevich int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) 265243a2e63SVlad Yasevich { 266243a2e63SVlad Yasevich struct net_port_vlans *pv = NULL; 267243a2e63SVlad Yasevich int err; 268243a2e63SVlad Yasevich 269243a2e63SVlad Yasevich ASSERT_RTNL(); 270243a2e63SVlad Yasevich 271243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 272243a2e63SVlad Yasevich if (pv) 273552406c4SVlad Yasevich return __vlan_add(pv, vid, flags); 274243a2e63SVlad Yasevich 275243a2e63SVlad Yasevich /* Create port vlan infomration 276243a2e63SVlad Yasevich */ 277243a2e63SVlad Yasevich pv = kzalloc(sizeof(*pv), GFP_KERNEL); 278243a2e63SVlad Yasevich if (!pv) 279243a2e63SVlad Yasevich return -ENOMEM; 280243a2e63SVlad Yasevich 281243a2e63SVlad Yasevich pv->parent.br = br; 282552406c4SVlad Yasevich err = __vlan_add(pv, vid, flags); 283243a2e63SVlad Yasevich if (err) 284243a2e63SVlad Yasevich goto out; 285243a2e63SVlad Yasevich 286243a2e63SVlad Yasevich rcu_assign_pointer(br->vlan_info, pv); 287243a2e63SVlad Yasevich return 0; 288243a2e63SVlad Yasevich out: 289243a2e63SVlad Yasevich kfree(pv); 290243a2e63SVlad Yasevich return err; 291243a2e63SVlad Yasevich } 292243a2e63SVlad Yasevich 2938adff41cSToshiaki Makita /* Must be protected by RTNL. 2948adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 2958adff41cSToshiaki Makita */ 296243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 297243a2e63SVlad Yasevich { 298243a2e63SVlad Yasevich struct net_port_vlans *pv; 299243a2e63SVlad Yasevich 300243a2e63SVlad Yasevich ASSERT_RTNL(); 301243a2e63SVlad Yasevich 302243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 303243a2e63SVlad Yasevich if (!pv) 304243a2e63SVlad Yasevich return -EINVAL; 305243a2e63SVlad Yasevich 306bc9a25d2SVlad Yasevich spin_lock_bh(&br->hash_lock); 307bc9a25d2SVlad Yasevich fdb_delete_by_addr(br, br->dev->dev_addr, vid); 308bc9a25d2SVlad Yasevich spin_unlock_bh(&br->hash_lock); 309bc9a25d2SVlad Yasevich 310243a2e63SVlad Yasevich __vlan_del(pv, vid); 311243a2e63SVlad Yasevich return 0; 312243a2e63SVlad Yasevich } 313243a2e63SVlad Yasevich 314243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 315243a2e63SVlad Yasevich { 316243a2e63SVlad Yasevich struct net_port_vlans *pv; 317243a2e63SVlad Yasevich 318243a2e63SVlad Yasevich ASSERT_RTNL(); 319243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 320243a2e63SVlad Yasevich if (!pv) 321243a2e63SVlad Yasevich return; 322243a2e63SVlad Yasevich 323243a2e63SVlad Yasevich __vlan_flush(pv); 324243a2e63SVlad Yasevich } 325243a2e63SVlad Yasevich 326243a2e63SVlad Yasevich int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) 327243a2e63SVlad Yasevich { 328243a2e63SVlad Yasevich if (!rtnl_trylock()) 329243a2e63SVlad Yasevich return restart_syscall(); 330243a2e63SVlad Yasevich 331243a2e63SVlad Yasevich if (br->vlan_enabled == val) 332243a2e63SVlad Yasevich goto unlock; 333243a2e63SVlad Yasevich 334243a2e63SVlad Yasevich br->vlan_enabled = val; 335243a2e63SVlad Yasevich 336243a2e63SVlad Yasevich unlock: 337243a2e63SVlad Yasevich rtnl_unlock(); 338243a2e63SVlad Yasevich return 0; 339243a2e63SVlad Yasevich } 340243a2e63SVlad Yasevich 3418adff41cSToshiaki Makita /* Must be protected by RTNL. 3428adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 3438adff41cSToshiaki Makita */ 344552406c4SVlad Yasevich int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) 345243a2e63SVlad Yasevich { 346243a2e63SVlad Yasevich struct net_port_vlans *pv = NULL; 347243a2e63SVlad Yasevich int err; 348243a2e63SVlad Yasevich 349243a2e63SVlad Yasevich ASSERT_RTNL(); 350243a2e63SVlad Yasevich 351243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 352243a2e63SVlad Yasevich if (pv) 353552406c4SVlad Yasevich return __vlan_add(pv, vid, flags); 354243a2e63SVlad Yasevich 355243a2e63SVlad Yasevich /* Create port vlan infomration 356243a2e63SVlad Yasevich */ 357243a2e63SVlad Yasevich pv = kzalloc(sizeof(*pv), GFP_KERNEL); 358243a2e63SVlad Yasevich if (!pv) { 359243a2e63SVlad Yasevich err = -ENOMEM; 360243a2e63SVlad Yasevich goto clean_up; 361243a2e63SVlad Yasevich } 362243a2e63SVlad Yasevich 363243a2e63SVlad Yasevich pv->port_idx = port->port_no; 364243a2e63SVlad Yasevich pv->parent.port = port; 365552406c4SVlad Yasevich err = __vlan_add(pv, vid, flags); 366243a2e63SVlad Yasevich if (err) 367243a2e63SVlad Yasevich goto clean_up; 368243a2e63SVlad Yasevich 369243a2e63SVlad Yasevich rcu_assign_pointer(port->vlan_info, pv); 370243a2e63SVlad Yasevich return 0; 371243a2e63SVlad Yasevich 372243a2e63SVlad Yasevich clean_up: 373243a2e63SVlad Yasevich kfree(pv); 374243a2e63SVlad Yasevich return err; 375243a2e63SVlad Yasevich } 376243a2e63SVlad Yasevich 3778adff41cSToshiaki Makita /* Must be protected by RTNL. 3788adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 3798adff41cSToshiaki Makita */ 380243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 381243a2e63SVlad Yasevich { 382243a2e63SVlad Yasevich struct net_port_vlans *pv; 383243a2e63SVlad Yasevich 384243a2e63SVlad Yasevich ASSERT_RTNL(); 385243a2e63SVlad Yasevich 386243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 387243a2e63SVlad Yasevich if (!pv) 388243a2e63SVlad Yasevich return -EINVAL; 389243a2e63SVlad Yasevich 390bc9a25d2SVlad Yasevich spin_lock_bh(&port->br->hash_lock); 391bc9a25d2SVlad Yasevich fdb_delete_by_addr(port->br, port->dev->dev_addr, vid); 392bc9a25d2SVlad Yasevich spin_unlock_bh(&port->br->hash_lock); 393bc9a25d2SVlad Yasevich 394243a2e63SVlad Yasevich return __vlan_del(pv, vid); 395243a2e63SVlad Yasevich } 396243a2e63SVlad Yasevich 397243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 398243a2e63SVlad Yasevich { 399243a2e63SVlad Yasevich struct net_port_vlans *pv; 400243a2e63SVlad Yasevich 401243a2e63SVlad Yasevich ASSERT_RTNL(); 402243a2e63SVlad Yasevich 403243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 404243a2e63SVlad Yasevich if (!pv) 405243a2e63SVlad Yasevich return; 406243a2e63SVlad Yasevich 407243a2e63SVlad Yasevich __vlan_flush(pv); 408243a2e63SVlad Yasevich } 409bc9a25d2SVlad Yasevich 410bc9a25d2SVlad Yasevich bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) 411bc9a25d2SVlad Yasevich { 412bc9a25d2SVlad Yasevich struct net_port_vlans *pv; 413bc9a25d2SVlad Yasevich bool found = false; 414bc9a25d2SVlad Yasevich 415bc9a25d2SVlad Yasevich rcu_read_lock(); 416bc9a25d2SVlad Yasevich pv = rcu_dereference(port->vlan_info); 417bc9a25d2SVlad Yasevich 418bc9a25d2SVlad Yasevich if (!pv) 419bc9a25d2SVlad Yasevich goto out; 420bc9a25d2SVlad Yasevich 421bc9a25d2SVlad Yasevich if (test_bit(vid, pv->vlan_bitmap)) 422bc9a25d2SVlad Yasevich found = true; 423bc9a25d2SVlad Yasevich 424bc9a25d2SVlad Yasevich out: 425bc9a25d2SVlad Yasevich rcu_read_unlock(); 426bc9a25d2SVlad Yasevich return found; 427bc9a25d2SVlad Yasevich } 428