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 */ 638580e211SToshiaki Makita err = vlan_vid_add(dev, br->vlan_proto, 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) 838580e211SToshiaki Makita vlan_vid_del(dev, br->vlan_proto, 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 958580e211SToshiaki Makita if (v->port_idx) { 968580e211SToshiaki Makita struct net_bridge_port *p = v->parent.port; 978580e211SToshiaki Makita vlan_vid_del(p->dev, p->br->vlan_proto, vid); 988580e211SToshiaki Makita } 99243a2e63SVlad Yasevich 100243a2e63SVlad Yasevich clear_bit(vid, v->vlan_bitmap); 1016cbdceebSVlad Yasevich v->num_vlans--; 102ef40b7efSToshiaki Makita if (bitmap_empty(v->vlan_bitmap, VLAN_N_VID)) { 103243a2e63SVlad Yasevich if (v->port_idx) 104cd18721eSMonam Agarwal RCU_INIT_POINTER(v->parent.port->vlan_info, NULL); 105243a2e63SVlad Yasevich else 106cd18721eSMonam Agarwal RCU_INIT_POINTER(v->parent.br->vlan_info, NULL); 107243a2e63SVlad Yasevich kfree_rcu(v, rcu); 108243a2e63SVlad Yasevich } 109243a2e63SVlad Yasevich return 0; 110243a2e63SVlad Yasevich } 111243a2e63SVlad Yasevich 112243a2e63SVlad Yasevich static void __vlan_flush(struct net_port_vlans *v) 113243a2e63SVlad Yasevich { 114552406c4SVlad Yasevich smp_wmb(); 115552406c4SVlad Yasevich v->pvid = 0; 116ef40b7efSToshiaki Makita bitmap_zero(v->vlan_bitmap, VLAN_N_VID); 117243a2e63SVlad Yasevich if (v->port_idx) 118cd18721eSMonam Agarwal RCU_INIT_POINTER(v->parent.port->vlan_info, NULL); 119243a2e63SVlad Yasevich else 120cd18721eSMonam Agarwal RCU_INIT_POINTER(v->parent.br->vlan_info, NULL); 121243a2e63SVlad Yasevich kfree_rcu(v, rcu); 122243a2e63SVlad Yasevich } 123243a2e63SVlad Yasevich 12478851988SVlad Yasevich struct sk_buff *br_handle_vlan(struct net_bridge *br, 12578851988SVlad Yasevich const struct net_port_vlans *pv, 126a37b85c9SVlad Yasevich struct sk_buff *skb) 127a37b85c9SVlad Yasevich { 128a37b85c9SVlad Yasevich u16 vid; 129a37b85c9SVlad Yasevich 13078851988SVlad Yasevich if (!br->vlan_enabled) 13178851988SVlad Yasevich goto out; 13278851988SVlad Yasevich 133fc92f745SVlad Yasevich /* Vlan filter table must be configured at this point. The 134fc92f745SVlad Yasevich * only exception is the bridge is set in promisc mode and the 135fc92f745SVlad Yasevich * packet is destined for the bridge device. In this case 136fc92f745SVlad Yasevich * pass the packet as is. 137fc92f745SVlad Yasevich */ 138fc92f745SVlad Yasevich if (!pv) { 139fc92f745SVlad Yasevich if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { 140fc92f745SVlad Yasevich goto out; 141fc92f745SVlad Yasevich } else { 142fc92f745SVlad Yasevich kfree_skb(skb); 143fc92f745SVlad Yasevich return NULL; 144fc92f745SVlad Yasevich } 145fc92f745SVlad Yasevich } 146fc92f745SVlad 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, 1491a81a2e0Stanxiaojun * send untagged; otherwise, send tagged. 15078851988SVlad Yasevich */ 15178851988SVlad Yasevich br_vlan_get_tag(skb, &vid); 15235e03f3aSVlad Yasevich if (test_bit(vid, pv->untagged_bitmap)) 15399b192daSToshiaki Makita skb->vlan_tci = 0; 15478851988SVlad Yasevich 15578851988SVlad Yasevich out: 15678851988SVlad Yasevich return skb; 15778851988SVlad Yasevich } 15878851988SVlad Yasevich 15978851988SVlad Yasevich /* Called under RCU */ 16078851988SVlad Yasevich bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, 16178851988SVlad Yasevich struct sk_buff *skb, u16 *vid) 16278851988SVlad Yasevich { 1638580e211SToshiaki Makita bool tagged; 1648580e211SToshiaki Makita __be16 proto; 165b90356ceSToshiaki Makita 166a37b85c9SVlad Yasevich /* If VLAN filtering is disabled on the bridge, all packets are 167a37b85c9SVlad Yasevich * permitted. 168a37b85c9SVlad Yasevich */ 169a37b85c9SVlad Yasevich if (!br->vlan_enabled) 170a37b85c9SVlad Yasevich return true; 171a37b85c9SVlad Yasevich 172a37b85c9SVlad Yasevich /* If there are no vlan in the permitted list, all packets are 173a37b85c9SVlad Yasevich * rejected. 174a37b85c9SVlad Yasevich */ 175a37b85c9SVlad Yasevich if (!v) 176eb707618SToshiaki Makita goto drop; 177a37b85c9SVlad Yasevich 1788580e211SToshiaki Makita proto = br->vlan_proto; 1798580e211SToshiaki Makita 18012464bb8SToshiaki Makita /* If vlan tx offload is disabled on bridge device and frame was 18112464bb8SToshiaki Makita * sent from vlan device on the bridge device, it does not have 18212464bb8SToshiaki Makita * HW accelerated vlan tag. 18312464bb8SToshiaki Makita */ 18412464bb8SToshiaki Makita if (unlikely(!vlan_tx_tag_present(skb) && 1858580e211SToshiaki Makita skb->protocol == proto)) { 18612464bb8SToshiaki Makita skb = vlan_untag(skb); 18712464bb8SToshiaki Makita if (unlikely(!skb)) 18812464bb8SToshiaki Makita return false; 18912464bb8SToshiaki Makita } 19012464bb8SToshiaki Makita 1918580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid)) { 1928580e211SToshiaki Makita /* Tagged frame */ 1938580e211SToshiaki Makita if (skb->vlan_proto != proto) { 1948580e211SToshiaki Makita /* Protocol-mismatch, empty out vlan_tci for new tag */ 1958580e211SToshiaki Makita skb_push(skb, ETH_HLEN); 1968580e211SToshiaki Makita skb = __vlan_put_tag(skb, skb->vlan_proto, 1978580e211SToshiaki Makita vlan_tx_tag_get(skb)); 1988580e211SToshiaki Makita if (unlikely(!skb)) 1998580e211SToshiaki Makita return false; 2008580e211SToshiaki Makita 2018580e211SToshiaki Makita skb_pull(skb, ETH_HLEN); 2028580e211SToshiaki Makita skb_reset_mac_len(skb); 2038580e211SToshiaki Makita *vid = 0; 2048580e211SToshiaki Makita tagged = false; 2058580e211SToshiaki Makita } else { 2068580e211SToshiaki Makita tagged = true; 2078580e211SToshiaki Makita } 2088580e211SToshiaki Makita } else { 2098580e211SToshiaki Makita /* Untagged frame */ 2108580e211SToshiaki Makita tagged = false; 2118580e211SToshiaki Makita } 2128580e211SToshiaki Makita 213b90356ceSToshiaki Makita if (!*vid) { 21478851988SVlad Yasevich u16 pvid = br_get_pvid(v); 21578851988SVlad Yasevich 216b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 217b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 218b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 21978851988SVlad Yasevich */ 22078851988SVlad Yasevich if (pvid == VLAN_N_VID) 221eb707618SToshiaki Makita goto drop; 22278851988SVlad Yasevich 223b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 224b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 22578851988SVlad Yasevich */ 226dfb5fa32SToshiaki Makita *vid = pvid; 2278580e211SToshiaki Makita if (likely(!tagged)) 228b90356ceSToshiaki Makita /* Untagged Frame. */ 2298580e211SToshiaki Makita __vlan_hwaccel_put_tag(skb, proto, pvid); 230b90356ceSToshiaki Makita else 231b90356ceSToshiaki Makita /* Priority-tagged Frame. 232b90356ceSToshiaki Makita * At this point, We know that skb->vlan_tci had 233b90356ceSToshiaki Makita * VLAN_TAG_PRESENT bit and its VID field was 0x000. 234b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 235b90356ceSToshiaki Makita */ 236b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 237b90356ceSToshiaki Makita 23878851988SVlad Yasevich return true; 23978851988SVlad Yasevich } 24078851988SVlad Yasevich 24178851988SVlad Yasevich /* Frame had a valid vlan tag. See if vlan is allowed */ 24278851988SVlad Yasevich if (test_bit(*vid, v->vlan_bitmap)) 243a37b85c9SVlad Yasevich return true; 244eb707618SToshiaki Makita drop: 245eb707618SToshiaki Makita kfree_skb(skb); 246a37b85c9SVlad Yasevich return false; 247a37b85c9SVlad Yasevich } 248a37b85c9SVlad Yasevich 24985f46c6bSVlad Yasevich /* Called under RCU. */ 25085f46c6bSVlad Yasevich bool br_allowed_egress(struct net_bridge *br, 25185f46c6bSVlad Yasevich const struct net_port_vlans *v, 25285f46c6bSVlad Yasevich const struct sk_buff *skb) 25385f46c6bSVlad Yasevich { 25485f46c6bSVlad Yasevich u16 vid; 25585f46c6bSVlad Yasevich 25685f46c6bSVlad Yasevich if (!br->vlan_enabled) 25785f46c6bSVlad Yasevich return true; 25885f46c6bSVlad Yasevich 25985f46c6bSVlad Yasevich if (!v) 26085f46c6bSVlad Yasevich return false; 26185f46c6bSVlad Yasevich 26285f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 26385f46c6bSVlad Yasevich if (test_bit(vid, v->vlan_bitmap)) 26485f46c6bSVlad Yasevich return true; 26585f46c6bSVlad Yasevich 26685f46c6bSVlad Yasevich return false; 26785f46c6bSVlad Yasevich } 26885f46c6bSVlad Yasevich 269e0d7968aSToshiaki Makita /* Called under RCU */ 270e0d7968aSToshiaki Makita bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) 271e0d7968aSToshiaki Makita { 272e0d7968aSToshiaki Makita struct net_bridge *br = p->br; 273e0d7968aSToshiaki Makita struct net_port_vlans *v; 274e0d7968aSToshiaki Makita 275e0d7968aSToshiaki Makita if (!br->vlan_enabled) 276e0d7968aSToshiaki Makita return true; 277e0d7968aSToshiaki Makita 278e0d7968aSToshiaki Makita v = rcu_dereference(p->vlan_info); 279e0d7968aSToshiaki Makita if (!v) 280e0d7968aSToshiaki Makita return false; 281e0d7968aSToshiaki Makita 2828580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) 2838580e211SToshiaki Makita *vid = 0; 2848580e211SToshiaki Makita 285e0d7968aSToshiaki Makita if (!*vid) { 286e0d7968aSToshiaki Makita *vid = br_get_pvid(v); 287e0d7968aSToshiaki Makita if (*vid == VLAN_N_VID) 288e0d7968aSToshiaki Makita return false; 289e0d7968aSToshiaki Makita 290e0d7968aSToshiaki Makita return true; 291e0d7968aSToshiaki Makita } 292e0d7968aSToshiaki Makita 293e0d7968aSToshiaki Makita if (test_bit(*vid, v->vlan_bitmap)) 294e0d7968aSToshiaki Makita return true; 295e0d7968aSToshiaki Makita 296e0d7968aSToshiaki Makita return false; 297e0d7968aSToshiaki Makita } 298e0d7968aSToshiaki Makita 2998adff41cSToshiaki Makita /* Must be protected by RTNL. 3008adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 3018adff41cSToshiaki Makita */ 302552406c4SVlad Yasevich int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) 303243a2e63SVlad Yasevich { 304243a2e63SVlad Yasevich struct net_port_vlans *pv = NULL; 305243a2e63SVlad Yasevich int err; 306243a2e63SVlad Yasevich 307243a2e63SVlad Yasevich ASSERT_RTNL(); 308243a2e63SVlad Yasevich 309243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 310243a2e63SVlad Yasevich if (pv) 311552406c4SVlad Yasevich return __vlan_add(pv, vid, flags); 312243a2e63SVlad Yasevich 313243a2e63SVlad Yasevich /* Create port vlan infomration 314243a2e63SVlad Yasevich */ 315243a2e63SVlad Yasevich pv = kzalloc(sizeof(*pv), GFP_KERNEL); 316243a2e63SVlad Yasevich if (!pv) 317243a2e63SVlad Yasevich return -ENOMEM; 318243a2e63SVlad Yasevich 319243a2e63SVlad Yasevich pv->parent.br = br; 320552406c4SVlad Yasevich err = __vlan_add(pv, vid, flags); 321243a2e63SVlad Yasevich if (err) 322243a2e63SVlad Yasevich goto out; 323243a2e63SVlad Yasevich 324243a2e63SVlad Yasevich rcu_assign_pointer(br->vlan_info, pv); 325243a2e63SVlad Yasevich return 0; 326243a2e63SVlad Yasevich out: 327243a2e63SVlad Yasevich kfree(pv); 328243a2e63SVlad Yasevich return err; 329243a2e63SVlad Yasevich } 330243a2e63SVlad Yasevich 3318adff41cSToshiaki Makita /* Must be protected by RTNL. 3328adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 3338adff41cSToshiaki Makita */ 334243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 335243a2e63SVlad Yasevich { 336243a2e63SVlad Yasevich struct net_port_vlans *pv; 337243a2e63SVlad Yasevich 338243a2e63SVlad Yasevich ASSERT_RTNL(); 339243a2e63SVlad Yasevich 340243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 341243a2e63SVlad Yasevich if (!pv) 342243a2e63SVlad Yasevich return -EINVAL; 343243a2e63SVlad Yasevich 344424bb9c9SToshiaki Makita br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); 345bc9a25d2SVlad Yasevich 346243a2e63SVlad Yasevich __vlan_del(pv, vid); 347243a2e63SVlad Yasevich return 0; 348243a2e63SVlad Yasevich } 349243a2e63SVlad Yasevich 350243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 351243a2e63SVlad Yasevich { 352243a2e63SVlad Yasevich struct net_port_vlans *pv; 353243a2e63SVlad Yasevich 354243a2e63SVlad Yasevich ASSERT_RTNL(); 355243a2e63SVlad Yasevich pv = rtnl_dereference(br->vlan_info); 356243a2e63SVlad Yasevich if (!pv) 357243a2e63SVlad Yasevich return; 358243a2e63SVlad Yasevich 359243a2e63SVlad Yasevich __vlan_flush(pv); 360243a2e63SVlad Yasevich } 361243a2e63SVlad Yasevich 3622b292fb4SToshiaki Makita bool br_vlan_find(struct net_bridge *br, u16 vid) 3632b292fb4SToshiaki Makita { 3642b292fb4SToshiaki Makita struct net_port_vlans *pv; 3652b292fb4SToshiaki Makita bool found = false; 3662b292fb4SToshiaki Makita 3672b292fb4SToshiaki Makita rcu_read_lock(); 3682b292fb4SToshiaki Makita pv = rcu_dereference(br->vlan_info); 3692b292fb4SToshiaki Makita 3702b292fb4SToshiaki Makita if (!pv) 3712b292fb4SToshiaki Makita goto out; 3722b292fb4SToshiaki Makita 3732b292fb4SToshiaki Makita if (test_bit(vid, pv->vlan_bitmap)) 3742b292fb4SToshiaki Makita found = true; 3752b292fb4SToshiaki Makita 3762b292fb4SToshiaki Makita out: 3772b292fb4SToshiaki Makita rcu_read_unlock(); 3782b292fb4SToshiaki Makita return found; 3792b292fb4SToshiaki Makita } 3802b292fb4SToshiaki Makita 381204177f3SToshiaki Makita /* Must be protected by RTNL. */ 382204177f3SToshiaki Makita static void recalculate_group_addr(struct net_bridge *br) 383204177f3SToshiaki Makita { 384204177f3SToshiaki Makita if (br->group_addr_set) 385204177f3SToshiaki Makita return; 386204177f3SToshiaki Makita 387204177f3SToshiaki Makita spin_lock_bh(&br->lock); 388204177f3SToshiaki Makita if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) { 389204177f3SToshiaki Makita /* Bridge Group Address */ 390204177f3SToshiaki Makita br->group_addr[5] = 0x00; 391204177f3SToshiaki Makita } else { /* vlan_enabled && ETH_P_8021AD */ 392204177f3SToshiaki Makita /* Provider Bridge Group Address */ 393204177f3SToshiaki Makita br->group_addr[5] = 0x08; 394204177f3SToshiaki Makita } 395204177f3SToshiaki Makita spin_unlock_bh(&br->lock); 396204177f3SToshiaki Makita } 397204177f3SToshiaki Makita 398204177f3SToshiaki Makita /* Must be protected by RTNL. */ 399204177f3SToshiaki Makita void br_recalculate_fwd_mask(struct net_bridge *br) 400204177f3SToshiaki Makita { 401204177f3SToshiaki Makita if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) 402204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; 403204177f3SToshiaki Makita else /* vlan_enabled && ETH_P_8021AD */ 404204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_8021AD & 405204177f3SToshiaki Makita ~(1u << br->group_addr[5]); 406204177f3SToshiaki Makita } 407204177f3SToshiaki Makita 408243a2e63SVlad Yasevich int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) 409243a2e63SVlad Yasevich { 410243a2e63SVlad Yasevich if (!rtnl_trylock()) 411243a2e63SVlad Yasevich return restart_syscall(); 412243a2e63SVlad Yasevich 413243a2e63SVlad Yasevich if (br->vlan_enabled == val) 414243a2e63SVlad Yasevich goto unlock; 415243a2e63SVlad Yasevich 416243a2e63SVlad Yasevich br->vlan_enabled = val; 4172796d0c6SVlad Yasevich br_manage_promisc(br); 418204177f3SToshiaki Makita recalculate_group_addr(br); 419204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 420243a2e63SVlad Yasevich 421243a2e63SVlad Yasevich unlock: 422243a2e63SVlad Yasevich rtnl_unlock(); 423243a2e63SVlad Yasevich return 0; 424243a2e63SVlad Yasevich } 425243a2e63SVlad Yasevich 426204177f3SToshiaki Makita int br_vlan_set_proto(struct net_bridge *br, unsigned long val) 427204177f3SToshiaki Makita { 428204177f3SToshiaki Makita int err = 0; 429204177f3SToshiaki Makita struct net_bridge_port *p; 430204177f3SToshiaki Makita struct net_port_vlans *pv; 431204177f3SToshiaki Makita __be16 proto, oldproto; 432204177f3SToshiaki Makita u16 vid, errvid; 433204177f3SToshiaki Makita 434204177f3SToshiaki Makita if (val != ETH_P_8021Q && val != ETH_P_8021AD) 435204177f3SToshiaki Makita return -EPROTONOSUPPORT; 436204177f3SToshiaki Makita 437204177f3SToshiaki Makita if (!rtnl_trylock()) 438204177f3SToshiaki Makita return restart_syscall(); 439204177f3SToshiaki Makita 440204177f3SToshiaki Makita proto = htons(val); 441204177f3SToshiaki Makita if (br->vlan_proto == proto) 442204177f3SToshiaki Makita goto unlock; 443204177f3SToshiaki Makita 444204177f3SToshiaki Makita /* Add VLANs for the new proto to the device filter. */ 445204177f3SToshiaki Makita list_for_each_entry(p, &br->port_list, list) { 446204177f3SToshiaki Makita pv = rtnl_dereference(p->vlan_info); 447204177f3SToshiaki Makita if (!pv) 448204177f3SToshiaki Makita continue; 449204177f3SToshiaki Makita 450204177f3SToshiaki Makita for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) { 451204177f3SToshiaki Makita err = vlan_vid_add(p->dev, proto, vid); 452204177f3SToshiaki Makita if (err) 453204177f3SToshiaki Makita goto err_filt; 454204177f3SToshiaki Makita } 455204177f3SToshiaki Makita } 456204177f3SToshiaki Makita 457204177f3SToshiaki Makita oldproto = br->vlan_proto; 458204177f3SToshiaki Makita br->vlan_proto = proto; 459204177f3SToshiaki Makita 460204177f3SToshiaki Makita recalculate_group_addr(br); 461204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 462204177f3SToshiaki Makita 463204177f3SToshiaki Makita /* Delete VLANs for the old proto from the device filter. */ 464204177f3SToshiaki Makita list_for_each_entry(p, &br->port_list, list) { 465204177f3SToshiaki Makita pv = rtnl_dereference(p->vlan_info); 466204177f3SToshiaki Makita if (!pv) 467204177f3SToshiaki Makita continue; 468204177f3SToshiaki Makita 469204177f3SToshiaki Makita for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) 470204177f3SToshiaki Makita vlan_vid_del(p->dev, oldproto, vid); 471204177f3SToshiaki Makita } 472204177f3SToshiaki Makita 473204177f3SToshiaki Makita unlock: 474204177f3SToshiaki Makita rtnl_unlock(); 475204177f3SToshiaki Makita return err; 476204177f3SToshiaki Makita 477204177f3SToshiaki Makita err_filt: 478204177f3SToshiaki Makita errvid = vid; 479204177f3SToshiaki Makita for_each_set_bit(vid, pv->vlan_bitmap, errvid) 480204177f3SToshiaki Makita vlan_vid_del(p->dev, proto, vid); 481204177f3SToshiaki Makita 482204177f3SToshiaki Makita list_for_each_entry_continue_reverse(p, &br->port_list, list) { 483204177f3SToshiaki Makita pv = rtnl_dereference(p->vlan_info); 484204177f3SToshiaki Makita if (!pv) 485204177f3SToshiaki Makita continue; 486204177f3SToshiaki Makita 487204177f3SToshiaki Makita for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) 488204177f3SToshiaki Makita vlan_vid_del(p->dev, proto, vid); 489204177f3SToshiaki Makita } 490204177f3SToshiaki Makita 491204177f3SToshiaki Makita goto unlock; 492204177f3SToshiaki Makita } 493204177f3SToshiaki Makita 4948580e211SToshiaki Makita void br_vlan_init(struct net_bridge *br) 4958580e211SToshiaki Makita { 4968580e211SToshiaki Makita br->vlan_proto = htons(ETH_P_8021Q); 4978580e211SToshiaki Makita } 4988580e211SToshiaki Makita 4998adff41cSToshiaki Makita /* Must be protected by RTNL. 5008adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 5018adff41cSToshiaki Makita */ 502552406c4SVlad Yasevich int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) 503243a2e63SVlad Yasevich { 504243a2e63SVlad Yasevich struct net_port_vlans *pv = NULL; 505243a2e63SVlad Yasevich int err; 506243a2e63SVlad Yasevich 507243a2e63SVlad Yasevich ASSERT_RTNL(); 508243a2e63SVlad Yasevich 509243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 510243a2e63SVlad Yasevich if (pv) 511552406c4SVlad Yasevich return __vlan_add(pv, vid, flags); 512243a2e63SVlad Yasevich 513243a2e63SVlad Yasevich /* Create port vlan infomration 514243a2e63SVlad Yasevich */ 515243a2e63SVlad Yasevich pv = kzalloc(sizeof(*pv), GFP_KERNEL); 516243a2e63SVlad Yasevich if (!pv) { 517243a2e63SVlad Yasevich err = -ENOMEM; 518243a2e63SVlad Yasevich goto clean_up; 519243a2e63SVlad Yasevich } 520243a2e63SVlad Yasevich 521243a2e63SVlad Yasevich pv->port_idx = port->port_no; 522243a2e63SVlad Yasevich pv->parent.port = port; 523552406c4SVlad Yasevich err = __vlan_add(pv, vid, flags); 524243a2e63SVlad Yasevich if (err) 525243a2e63SVlad Yasevich goto clean_up; 526243a2e63SVlad Yasevich 527243a2e63SVlad Yasevich rcu_assign_pointer(port->vlan_info, pv); 528243a2e63SVlad Yasevich return 0; 529243a2e63SVlad Yasevich 530243a2e63SVlad Yasevich clean_up: 531243a2e63SVlad Yasevich kfree(pv); 532243a2e63SVlad Yasevich return err; 533243a2e63SVlad Yasevich } 534243a2e63SVlad Yasevich 5358adff41cSToshiaki Makita /* Must be protected by RTNL. 5368adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 5378adff41cSToshiaki Makita */ 538243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 539243a2e63SVlad Yasevich { 540243a2e63SVlad Yasevich struct net_port_vlans *pv; 541243a2e63SVlad Yasevich 542243a2e63SVlad Yasevich ASSERT_RTNL(); 543243a2e63SVlad Yasevich 544243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 545243a2e63SVlad Yasevich if (!pv) 546243a2e63SVlad Yasevich return -EINVAL; 547243a2e63SVlad Yasevich 548424bb9c9SToshiaki Makita br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); 549bc9a25d2SVlad Yasevich 550243a2e63SVlad Yasevich return __vlan_del(pv, vid); 551243a2e63SVlad Yasevich } 552243a2e63SVlad Yasevich 553243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 554243a2e63SVlad Yasevich { 555243a2e63SVlad Yasevich struct net_port_vlans *pv; 556dbbaf949SToshiaki Makita u16 vid; 557243a2e63SVlad Yasevich 558243a2e63SVlad Yasevich ASSERT_RTNL(); 559243a2e63SVlad Yasevich 560243a2e63SVlad Yasevich pv = rtnl_dereference(port->vlan_info); 561243a2e63SVlad Yasevich if (!pv) 562243a2e63SVlad Yasevich return; 563243a2e63SVlad Yasevich 564dbbaf949SToshiaki Makita for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) 5658580e211SToshiaki Makita vlan_vid_del(port->dev, port->br->vlan_proto, vid); 566dbbaf949SToshiaki Makita 567243a2e63SVlad Yasevich __vlan_flush(pv); 568243a2e63SVlad Yasevich } 569bc9a25d2SVlad Yasevich 570bc9a25d2SVlad Yasevich bool nbp_vlan_find(struct net_bridge_port *port, u16 vid) 571bc9a25d2SVlad Yasevich { 572bc9a25d2SVlad Yasevich struct net_port_vlans *pv; 573bc9a25d2SVlad Yasevich bool found = false; 574bc9a25d2SVlad Yasevich 575bc9a25d2SVlad Yasevich rcu_read_lock(); 576bc9a25d2SVlad Yasevich pv = rcu_dereference(port->vlan_info); 577bc9a25d2SVlad Yasevich 578bc9a25d2SVlad Yasevich if (!pv) 579bc9a25d2SVlad Yasevich goto out; 580bc9a25d2SVlad Yasevich 581bc9a25d2SVlad Yasevich if (test_bit(vid, pv->vlan_bitmap)) 582bc9a25d2SVlad Yasevich found = true; 583bc9a25d2SVlad Yasevich 584bc9a25d2SVlad Yasevich out: 585bc9a25d2SVlad Yasevich rcu_read_unlock(); 586bc9a25d2SVlad Yasevich return found; 587bc9a25d2SVlad Yasevich } 588