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 { 37bc9a25d2SVlad Yasevich struct net_bridge_port *p = NULL; 38bc9a25d2SVlad Yasevich struct net_bridge *br; 39bc9a25d2SVlad Yasevich struct net_device *dev; 40243a2e63SVlad Yasevich int err; 41243a2e63SVlad Yasevich 42552406c4SVlad Yasevich if (test_bit(vid, v->vlan_bitmap)) { 4335e03f3aSVlad Yasevich __vlan_add_flags(v, vid, flags); 44552406c4SVlad Yasevich return 0; 45552406c4SVlad Yasevich } 46243a2e63SVlad Yasevich 47bc9a25d2SVlad Yasevich if (v->port_idx) { 48bc9a25d2SVlad Yasevich p = v->parent.port; 49bc9a25d2SVlad Yasevich br = p->br; 50bc9a25d2SVlad Yasevich dev = p->dev; 51bc9a25d2SVlad Yasevich } else { 52bc9a25d2SVlad Yasevich br = v->parent.br; 53bc9a25d2SVlad Yasevich dev = br->dev; 54bc9a25d2SVlad Yasevich } 55243a2e63SVlad Yasevich 5619236837SToshiaki Makita if (p) { 57243a2e63SVlad Yasevich /* Add VLAN to the device filter if it is supported. 58bc9a25d2SVlad Yasevich * Stricly speaking, this is not necessary now, since 59bc9a25d2SVlad Yasevich * devices are made promiscuous by the bridge, but if 60bc9a25d2SVlad Yasevich * that ever changes this code will allow tagged 61bc9a25d2SVlad Yasevich * traffic to enter the bridge. 62243a2e63SVlad Yasevich */ 6319236837SToshiaki Makita err = vlan_vid_add(dev, htons(ETH_P_8021Q), vid); 64243a2e63SVlad Yasevich if (err) 65243a2e63SVlad Yasevich return err; 66243a2e63SVlad Yasevich } 67bc9a25d2SVlad Yasevich 68bc9a25d2SVlad Yasevich err = br_fdb_insert(br, p, dev->dev_addr, vid); 69bc9a25d2SVlad Yasevich if (err) { 70bc9a25d2SVlad Yasevich br_err(br, "failed insert local address into bridge " 71bc9a25d2SVlad Yasevich "forwarding table\n"); 72bc9a25d2SVlad Yasevich goto out_filt; 73bc9a25d2SVlad Yasevich } 74bc9a25d2SVlad Yasevich 75243a2e63SVlad Yasevich set_bit(vid, v->vlan_bitmap); 766cbdceebSVlad Yasevich v->num_vlans++; 7735e03f3aSVlad Yasevich __vlan_add_flags(v, vid, flags); 78552406c4SVlad Yasevich 79243a2e63SVlad Yasevich return 0; 80bc9a25d2SVlad Yasevich 81bc9a25d2SVlad Yasevich out_filt: 8219236837SToshiaki Makita if (p) 8319236837SToshiaki Makita vlan_vid_del(dev, htons(ETH_P_8021Q), vid); 84bc9a25d2SVlad Yasevich return err; 85243a2e63SVlad Yasevich } 86243a2e63SVlad Yasevich 87243a2e63SVlad Yasevich static int __vlan_del(struct net_port_vlans *v, u16 vid) 88243a2e63SVlad Yasevich { 89243a2e63SVlad Yasevich if (!test_bit(vid, v->vlan_bitmap)) 90243a2e63SVlad Yasevich return -EINVAL; 91243a2e63SVlad Yasevich 92552406c4SVlad Yasevich __vlan_delete_pvid(v, vid); 9335e03f3aSVlad Yasevich clear_bit(vid, v->untagged_bitmap); 94552406c4SVlad Yasevich 9519236837SToshiaki Makita if (v->port_idx) 9619236837SToshiaki Makita vlan_vid_del(v->parent.port->dev, htons(ETH_P_8021Q), vid); 97243a2e63SVlad Yasevich 98243a2e63SVlad Yasevich clear_bit(vid, v->vlan_bitmap); 996cbdceebSVlad Yasevich v->num_vlans--; 100ef40b7efSToshiaki Makita if (bitmap_empty(v->vlan_bitmap, VLAN_N_VID)) { 101243a2e63SVlad Yasevich if (v->port_idx) 102243a2e63SVlad Yasevich rcu_assign_pointer(v->parent.port->vlan_info, NULL); 103243a2e63SVlad Yasevich else 104243a2e63SVlad Yasevich rcu_assign_pointer(v->parent.br->vlan_info, NULL); 105243a2e63SVlad Yasevich kfree_rcu(v, rcu); 106243a2e63SVlad Yasevich } 107243a2e63SVlad Yasevich return 0; 108243a2e63SVlad Yasevich } 109243a2e63SVlad Yasevich 110243a2e63SVlad Yasevich static void __vlan_flush(struct net_port_vlans *v) 111243a2e63SVlad Yasevich { 112552406c4SVlad Yasevich smp_wmb(); 113552406c4SVlad Yasevich v->pvid = 0; 114ef40b7efSToshiaki Makita bitmap_zero(v->vlan_bitmap, VLAN_N_VID); 115243a2e63SVlad Yasevich if (v->port_idx) 116243a2e63SVlad Yasevich rcu_assign_pointer(v->parent.port->vlan_info, NULL); 117243a2e63SVlad Yasevich else 118243a2e63SVlad Yasevich rcu_assign_pointer(v->parent.br->vlan_info, NULL); 119243a2e63SVlad Yasevich kfree_rcu(v, rcu); 120243a2e63SVlad Yasevich } 121243a2e63SVlad Yasevich 12278851988SVlad Yasevich /* Strip the tag from the packet. Will return skb with tci set 0. */ 12378851988SVlad Yasevich static struct sk_buff *br_vlan_untag(struct sk_buff *skb) 12478851988SVlad Yasevich { 12578851988SVlad Yasevich if (skb->protocol != htons(ETH_P_8021Q)) { 12678851988SVlad Yasevich skb->vlan_tci = 0; 12778851988SVlad Yasevich return skb; 12878851988SVlad Yasevich } 12978851988SVlad Yasevich 13078851988SVlad Yasevich skb->vlan_tci = 0; 13178851988SVlad Yasevich skb = vlan_untag(skb); 13278851988SVlad Yasevich if (skb) 13378851988SVlad Yasevich skb->vlan_tci = 0; 13478851988SVlad Yasevich 13578851988SVlad Yasevich return skb; 13678851988SVlad Yasevich } 13778851988SVlad Yasevich 13878851988SVlad Yasevich struct sk_buff *br_handle_vlan(struct net_bridge *br, 13978851988SVlad Yasevich const struct net_port_vlans *pv, 140a37b85c9SVlad Yasevich struct sk_buff *skb) 141a37b85c9SVlad Yasevich { 142a37b85c9SVlad Yasevich u16 vid; 143a37b85c9SVlad Yasevich 14478851988SVlad Yasevich if (!br->vlan_enabled) 14578851988SVlad Yasevich goto out; 14678851988SVlad Yasevich 14778851988SVlad Yasevich /* At this point, we know that the frame was filtered and contains 14835e03f3aSVlad Yasevich * a valid vlan id. If the vlan id is set in the untagged bitmap, 14978851988SVlad Yasevich * send untagged; otherwise, send taged. 15078851988SVlad Yasevich */ 15178851988SVlad Yasevich br_vlan_get_tag(skb, &vid); 15235e03f3aSVlad Yasevich if (test_bit(vid, pv->untagged_bitmap)) 15378851988SVlad Yasevich skb = br_vlan_untag(skb); 15478851988SVlad Yasevich else { 15578851988SVlad Yasevich /* Egress policy says "send tagged". If output device 15678851988SVlad Yasevich * is the bridge, we need to add the VLAN header 15778851988SVlad Yasevich * ourselves since we'll be going through the RX path. 15878851988SVlad Yasevich * Sending to ports puts the frame on the TX path and 15978851988SVlad Yasevich * we let dev_hard_start_xmit() add the header. 16078851988SVlad Yasevich */ 16178851988SVlad Yasevich if (skb->protocol != htons(ETH_P_8021Q) && 16278851988SVlad Yasevich pv->port_idx == 0) { 16378851988SVlad Yasevich /* vlan_put_tag expects skb->data to point to 16478851988SVlad Yasevich * mac header. 16578851988SVlad Yasevich */ 16678851988SVlad Yasevich skb_push(skb, ETH_HLEN); 16786a9bad3SPatrick McHardy skb = __vlan_put_tag(skb, skb->vlan_proto, skb->vlan_tci); 16878851988SVlad Yasevich if (!skb) 16978851988SVlad Yasevich goto out; 17078851988SVlad Yasevich /* put skb->data back to where it was */ 17178851988SVlad Yasevich skb_pull(skb, ETH_HLEN); 17278851988SVlad Yasevich skb->vlan_tci = 0; 17378851988SVlad Yasevich } 17478851988SVlad Yasevich } 17578851988SVlad Yasevich 17678851988SVlad Yasevich out: 17778851988SVlad Yasevich return skb; 17878851988SVlad Yasevich } 17978851988SVlad Yasevich 18078851988SVlad Yasevich /* Called under RCU */ 18178851988SVlad Yasevich bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, 18278851988SVlad Yasevich struct sk_buff *skb, u16 *vid) 18378851988SVlad Yasevich { 184b90356ceSToshiaki Makita int err; 185b90356ceSToshiaki Makita 186a37b85c9SVlad Yasevich /* If VLAN filtering is disabled on the bridge, all packets are 187a37b85c9SVlad Yasevich * permitted. 188a37b85c9SVlad Yasevich */ 189a37b85c9SVlad Yasevich if (!br->vlan_enabled) 190a37b85c9SVlad Yasevich return true; 191a37b85c9SVlad Yasevich 192a37b85c9SVlad Yasevich /* If there are no vlan in the permitted list, all packets are 193a37b85c9SVlad Yasevich * rejected. 194a37b85c9SVlad Yasevich */ 195a37b85c9SVlad Yasevich if (!v) 196a37b85c9SVlad Yasevich return false; 197a37b85c9SVlad Yasevich 198b90356ceSToshiaki Makita err = br_vlan_get_tag(skb, vid); 199b90356ceSToshiaki Makita if (!*vid) { 20078851988SVlad Yasevich u16 pvid = br_get_pvid(v); 20178851988SVlad Yasevich 202b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 203b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 204b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 20578851988SVlad Yasevich */ 20678851988SVlad Yasevich if (pvid == VLAN_N_VID) 20778851988SVlad Yasevich return false; 20878851988SVlad Yasevich 209b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 210b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 21178851988SVlad Yasevich */ 212dfb5fa32SToshiaki Makita *vid = pvid; 213b90356ceSToshiaki Makita if (likely(err)) 214b90356ceSToshiaki Makita /* Untagged Frame. */ 21586a9bad3SPatrick McHardy __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), pvid); 216b90356ceSToshiaki Makita else 217b90356ceSToshiaki Makita /* Priority-tagged Frame. 218b90356ceSToshiaki Makita * At this point, We know that skb->vlan_tci had 219b90356ceSToshiaki Makita * VLAN_TAG_PRESENT bit and its VID field was 0x000. 220b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 221b90356ceSToshiaki Makita */ 222b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 223b90356ceSToshiaki Makita 22478851988SVlad Yasevich return true; 22578851988SVlad Yasevich } 22678851988SVlad Yasevich 22778851988SVlad Yasevich /* Frame had a valid vlan tag. See if vlan is allowed */ 22878851988SVlad Yasevich if (test_bit(*vid, v->vlan_bitmap)) 229a37b85c9SVlad Yasevich return true; 230a37b85c9SVlad Yasevich 231a37b85c9SVlad Yasevich return false; 232a37b85c9SVlad Yasevich } 233a37b85c9SVlad Yasevich 23485f46c6bSVlad Yasevich /* Called under RCU. */ 23585f46c6bSVlad Yasevich bool br_allowed_egress(struct net_bridge *br, 23685f46c6bSVlad Yasevich const struct net_port_vlans *v, 23785f46c6bSVlad Yasevich const struct sk_buff *skb) 23885f46c6bSVlad Yasevich { 23985f46c6bSVlad Yasevich u16 vid; 24085f46c6bSVlad Yasevich 24185f46c6bSVlad Yasevich if (!br->vlan_enabled) 24285f46c6bSVlad Yasevich return true; 24385f46c6bSVlad Yasevich 24485f46c6bSVlad Yasevich if (!v) 24585f46c6bSVlad Yasevich return false; 24685f46c6bSVlad Yasevich 24785f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 24885f46c6bSVlad Yasevich if (test_bit(vid, v->vlan_bitmap)) 24985f46c6bSVlad Yasevich return true; 25085f46c6bSVlad Yasevich 25185f46c6bSVlad Yasevich return false; 25285f46c6bSVlad Yasevich } 25385f46c6bSVlad Yasevich 2548adff41cSToshiaki Makita /* Must be protected by RTNL. 2558adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 2568adff41cSToshiaki Makita */ 257552406c4SVlad Yasevich int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) 258243a2e63SVlad Yasevich { 259243a2e63SVlad Yasevich struct net_port_vlans *pv = NULL; 260243a2e63SVlad Yasevich int err; 261243a2e63SVlad Yasevich 262243a2e63SVlad Yasevich ASSERT_RTNL(); 263243a2e63SVlad Yasevich 264243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 265243a2e63SVlad Yasevich if (pv) 266552406c4SVlad Yasevich return __vlan_add(pv, vid, flags); 267243a2e63SVlad Yasevich 268243a2e63SVlad Yasevich /* Create port vlan infomration 269243a2e63SVlad Yasevich */ 270243a2e63SVlad Yasevich pv = kzalloc(sizeof(*pv), GFP_KERNEL); 271243a2e63SVlad Yasevich if (!pv) 272243a2e63SVlad Yasevich return -ENOMEM; 273243a2e63SVlad Yasevich 274243a2e63SVlad Yasevich pv->parent.br = br; 275552406c4SVlad Yasevich err = __vlan_add(pv, vid, flags); 276243a2e63SVlad Yasevich if (err) 277243a2e63SVlad Yasevich goto out; 278243a2e63SVlad Yasevich 279243a2e63SVlad Yasevich rcu_assign_pointer(br->vlan_info, pv); 280243a2e63SVlad Yasevich return 0; 281243a2e63SVlad Yasevich out: 282243a2e63SVlad Yasevich kfree(pv); 283243a2e63SVlad Yasevich return err; 284243a2e63SVlad Yasevich } 285243a2e63SVlad Yasevich 2868adff41cSToshiaki Makita /* Must be protected by RTNL. 2878adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 2888adff41cSToshiaki Makita */ 289243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 290243a2e63SVlad Yasevich { 291243a2e63SVlad Yasevich struct net_port_vlans *pv; 292243a2e63SVlad Yasevich 293243a2e63SVlad Yasevich ASSERT_RTNL(); 294243a2e63SVlad Yasevich 295243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 296243a2e63SVlad Yasevich if (!pv) 297243a2e63SVlad Yasevich return -EINVAL; 298243a2e63SVlad Yasevich 299bc9a25d2SVlad Yasevich spin_lock_bh(&br->hash_lock); 300bc9a25d2SVlad Yasevich fdb_delete_by_addr(br, br->dev->dev_addr, vid); 301bc9a25d2SVlad Yasevich spin_unlock_bh(&br->hash_lock); 302bc9a25d2SVlad Yasevich 303243a2e63SVlad Yasevich __vlan_del(pv, vid); 304243a2e63SVlad Yasevich return 0; 305243a2e63SVlad Yasevich } 306243a2e63SVlad Yasevich 307243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 308243a2e63SVlad Yasevich { 309243a2e63SVlad Yasevich struct net_port_vlans *pv; 310243a2e63SVlad Yasevich 311243a2e63SVlad Yasevich ASSERT_RTNL(); 312243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 313243a2e63SVlad Yasevich if (!pv) 314243a2e63SVlad Yasevich return; 315243a2e63SVlad Yasevich 316243a2e63SVlad Yasevich __vlan_flush(pv); 317243a2e63SVlad Yasevich } 318243a2e63SVlad Yasevich 319243a2e63SVlad Yasevich int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) 320243a2e63SVlad Yasevich { 321243a2e63SVlad Yasevich if (!rtnl_trylock()) 322243a2e63SVlad Yasevich return restart_syscall(); 323243a2e63SVlad Yasevich 324243a2e63SVlad Yasevich if (br->vlan_enabled == val) 325243a2e63SVlad Yasevich goto unlock; 326243a2e63SVlad Yasevich 327243a2e63SVlad Yasevich br->vlan_enabled = val; 328243a2e63SVlad Yasevich 329243a2e63SVlad Yasevich unlock: 330243a2e63SVlad Yasevich rtnl_unlock(); 331243a2e63SVlad Yasevich return 0; 332243a2e63SVlad Yasevich } 333243a2e63SVlad Yasevich 3348adff41cSToshiaki Makita /* Must be protected by RTNL. 3358adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 3368adff41cSToshiaki Makita */ 337552406c4SVlad Yasevich int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) 338243a2e63SVlad Yasevich { 339243a2e63SVlad Yasevich struct net_port_vlans *pv = NULL; 340243a2e63SVlad Yasevich int err; 341243a2e63SVlad Yasevich 342243a2e63SVlad Yasevich ASSERT_RTNL(); 343243a2e63SVlad Yasevich 344243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 345243a2e63SVlad Yasevich if (pv) 346552406c4SVlad Yasevich return __vlan_add(pv, vid, flags); 347243a2e63SVlad Yasevich 348243a2e63SVlad Yasevich /* Create port vlan infomration 349243a2e63SVlad Yasevich */ 350243a2e63SVlad Yasevich pv = kzalloc(sizeof(*pv), GFP_KERNEL); 351243a2e63SVlad Yasevich if (!pv) { 352243a2e63SVlad Yasevich err = -ENOMEM; 353243a2e63SVlad Yasevich goto clean_up; 354243a2e63SVlad Yasevich } 355243a2e63SVlad Yasevich 356243a2e63SVlad Yasevich pv->port_idx = port->port_no; 357243a2e63SVlad Yasevich pv->parent.port = port; 358552406c4SVlad Yasevich err = __vlan_add(pv, vid, flags); 359243a2e63SVlad Yasevich if (err) 360243a2e63SVlad Yasevich goto clean_up; 361243a2e63SVlad Yasevich 362243a2e63SVlad Yasevich rcu_assign_pointer(port->vlan_info, pv); 363243a2e63SVlad Yasevich return 0; 364243a2e63SVlad Yasevich 365243a2e63SVlad Yasevich clean_up: 366243a2e63SVlad Yasevich kfree(pv); 367243a2e63SVlad Yasevich return err; 368243a2e63SVlad Yasevich } 369243a2e63SVlad Yasevich 3708adff41cSToshiaki Makita /* Must be protected by RTNL. 3718adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 3728adff41cSToshiaki Makita */ 373243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 374243a2e63SVlad Yasevich { 375243a2e63SVlad Yasevich struct net_port_vlans *pv; 376243a2e63SVlad Yasevich 377243a2e63SVlad Yasevich ASSERT_RTNL(); 378243a2e63SVlad Yasevich 379243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 380243a2e63SVlad Yasevich if (!pv) 381243a2e63SVlad Yasevich return -EINVAL; 382243a2e63SVlad Yasevich 383bc9a25d2SVlad Yasevich spin_lock_bh(&port->br->hash_lock); 384bc9a25d2SVlad Yasevich fdb_delete_by_addr(port->br, port->dev->dev_addr, vid); 385bc9a25d2SVlad Yasevich spin_unlock_bh(&port->br->hash_lock); 386bc9a25d2SVlad Yasevich 387243a2e63SVlad Yasevich return __vlan_del(pv, vid); 388243a2e63SVlad Yasevich } 389243a2e63SVlad Yasevich 390243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 391243a2e63SVlad Yasevich { 392243a2e63SVlad Yasevich struct net_port_vlans *pv; 393dbbaf949SToshiaki Makita u16 vid; 394243a2e63SVlad Yasevich 395243a2e63SVlad Yasevich ASSERT_RTNL(); 396243a2e63SVlad Yasevich 397243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 398243a2e63SVlad Yasevich if (!pv) 399243a2e63SVlad Yasevich return; 400243a2e63SVlad Yasevich 401dbbaf949SToshiaki Makita for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) 402dbbaf949SToshiaki Makita vlan_vid_del(port->dev, htons(ETH_P_8021Q), vid); 403dbbaf949SToshiaki Makita 404243a2e63SVlad Yasevich __vlan_flush(pv); 405243a2e63SVlad Yasevich } 406bc9a25d2SVlad Yasevich 407bc9a25d2SVlad Yasevich bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) 408bc9a25d2SVlad Yasevich { 409bc9a25d2SVlad Yasevich struct net_port_vlans *pv; 410bc9a25d2SVlad Yasevich bool found = false; 411bc9a25d2SVlad Yasevich 412bc9a25d2SVlad Yasevich rcu_read_lock(); 413bc9a25d2SVlad Yasevich pv = rcu_dereference(port->vlan_info); 414bc9a25d2SVlad Yasevich 415bc9a25d2SVlad Yasevich if (!pv) 416bc9a25d2SVlad Yasevich goto out; 417bc9a25d2SVlad Yasevich 418bc9a25d2SVlad Yasevich if (test_bit(vid, pv->vlan_bitmap)) 419bc9a25d2SVlad Yasevich found = true; 420bc9a25d2SVlad Yasevich 421bc9a25d2SVlad Yasevich out: 422bc9a25d2SVlad Yasevich rcu_read_unlock(); 423bc9a25d2SVlad Yasevich return found; 424bc9a25d2SVlad Yasevich } 425