1243a2e63SVlad Yasevich #include <linux/kernel.h> 2243a2e63SVlad Yasevich #include <linux/netdevice.h> 3243a2e63SVlad Yasevich #include <linux/rtnetlink.h> 4243a2e63SVlad Yasevich #include <linux/slab.h> 57f109539SScott Feldman #include <net/switchdev.h> 6243a2e63SVlad Yasevich 7243a2e63SVlad Yasevich #include "br_private.h" 8243a2e63SVlad Yasevich 92594e906SNikolay Aleksandrov static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg, 102594e906SNikolay Aleksandrov const void *ptr) 11552406c4SVlad Yasevich { 122594e906SNikolay Aleksandrov const struct net_bridge_vlan *vle = ptr; 132594e906SNikolay Aleksandrov u16 vid = *(u16 *)arg->key; 142594e906SNikolay Aleksandrov 152594e906SNikolay Aleksandrov return vle->vid != vid; 162594e906SNikolay Aleksandrov } 172594e906SNikolay Aleksandrov 182594e906SNikolay Aleksandrov static const struct rhashtable_params br_vlan_rht_params = { 192594e906SNikolay Aleksandrov .head_offset = offsetof(struct net_bridge_vlan, vnode), 202594e906SNikolay Aleksandrov .key_offset = offsetof(struct net_bridge_vlan, vid), 212594e906SNikolay Aleksandrov .key_len = sizeof(u16), 228af78b64SNikolay Aleksandrov .nelem_hint = 3, 238af78b64SNikolay Aleksandrov .locks_mul = 1, 242594e906SNikolay Aleksandrov .max_size = VLAN_N_VID, 252594e906SNikolay Aleksandrov .obj_cmpfn = br_vlan_cmp, 262594e906SNikolay Aleksandrov .automatic_shrinking = true, 272594e906SNikolay Aleksandrov }; 282594e906SNikolay Aleksandrov 292594e906SNikolay Aleksandrov static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid) 302594e906SNikolay Aleksandrov { 312594e906SNikolay Aleksandrov return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params); 322594e906SNikolay Aleksandrov } 332594e906SNikolay Aleksandrov 3477751ee8SNikolay Aleksandrov static void __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid) 352594e906SNikolay Aleksandrov { 3677751ee8SNikolay Aleksandrov if (vg->pvid == vid) 37552406c4SVlad Yasevich return; 38552406c4SVlad Yasevich 39552406c4SVlad Yasevich smp_wmb(); 4077751ee8SNikolay Aleksandrov vg->pvid = vid; 41552406c4SVlad Yasevich } 42552406c4SVlad Yasevich 4377751ee8SNikolay Aleksandrov static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) 44552406c4SVlad Yasevich { 4577751ee8SNikolay Aleksandrov if (vg->pvid != vid) 46552406c4SVlad Yasevich return; 47552406c4SVlad Yasevich 48552406c4SVlad Yasevich smp_wmb(); 4977751ee8SNikolay Aleksandrov vg->pvid = 0; 50552406c4SVlad Yasevich } 51552406c4SVlad Yasevich 522594e906SNikolay Aleksandrov static void __vlan_add_flags(struct net_bridge_vlan *v, u16 flags) 5335e03f3aSVlad Yasevich { 5477751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 5577751ee8SNikolay Aleksandrov 562594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) 5777751ee8SNikolay Aleksandrov vg = v->br->vlgrp; 58635126b7SVlad Yasevich else 5977751ee8SNikolay Aleksandrov vg = v->port->vlgrp; 6077751ee8SNikolay Aleksandrov 6177751ee8SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_PVID) 6277751ee8SNikolay Aleksandrov __vlan_add_pvid(vg, v->vid); 632594e906SNikolay Aleksandrov else 6477751ee8SNikolay Aleksandrov __vlan_delete_pvid(vg, v->vid); 6535e03f3aSVlad Yasevich 6635e03f3aSVlad Yasevich if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 672594e906SNikolay Aleksandrov v->flags |= BRIDGE_VLAN_INFO_UNTAGGED; 68635126b7SVlad Yasevich else 692594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; 7035e03f3aSVlad Yasevich } 7135e03f3aSVlad Yasevich 727f109539SScott Feldman static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, 737f109539SScott Feldman u16 vid, u16 flags) 747f109539SScott Feldman { 757f109539SScott Feldman const struct net_device_ops *ops = dev->netdev_ops; 767f109539SScott Feldman int err; 777f109539SScott Feldman 787f109539SScott Feldman /* If driver uses VLAN ndo ops, use 8021q to install vid 797f109539SScott Feldman * on device, otherwise try switchdev ops to install vid. 807f109539SScott Feldman */ 817f109539SScott Feldman 827f109539SScott Feldman if (ops->ndo_vlan_rx_add_vid) { 837f109539SScott Feldman err = vlan_vid_add(dev, br->vlan_proto, vid); 847f109539SScott Feldman } else { 858f24f309SJiri Pirko struct switchdev_obj_port_vlan v = { 867f109539SScott Feldman .flags = flags, 873e3a78b4SScott Feldman .vid_begin = vid, 887f109539SScott Feldman .vid_end = vid, 897f109539SScott Feldman }; 907f109539SScott Feldman 9157d80838SJiri Pirko err = switchdev_port_obj_add(dev, SWITCHDEV_OBJ_ID_PORT_VLAN, 9257d80838SJiri Pirko &v); 937f109539SScott Feldman if (err == -EOPNOTSUPP) 947f109539SScott Feldman err = 0; 957f109539SScott Feldman } 967f109539SScott Feldman 977f109539SScott Feldman return err; 987f109539SScott Feldman } 997f109539SScott Feldman 1002594e906SNikolay Aleksandrov static void __vlan_add_list(struct net_bridge_vlan *v) 101243a2e63SVlad Yasevich { 1022594e906SNikolay Aleksandrov struct list_head *headp, *hpos; 1032594e906SNikolay Aleksandrov struct net_bridge_vlan *vent; 104243a2e63SVlad Yasevich 1052594e906SNikolay Aleksandrov headp = br_vlan_is_master(v) ? &v->br->vlgrp->vlan_list : 1062594e906SNikolay Aleksandrov &v->port->vlgrp->vlan_list; 1072594e906SNikolay Aleksandrov list_for_each_prev(hpos, headp) { 1082594e906SNikolay Aleksandrov vent = list_entry(hpos, struct net_bridge_vlan, vlist); 1092594e906SNikolay Aleksandrov if (v->vid < vent->vid) 1102594e906SNikolay Aleksandrov continue; 1112594e906SNikolay Aleksandrov else 1122594e906SNikolay Aleksandrov break; 1132594e906SNikolay Aleksandrov } 1142594e906SNikolay Aleksandrov list_add(&v->vlist, hpos); 115552406c4SVlad Yasevich } 116243a2e63SVlad Yasevich 1172594e906SNikolay Aleksandrov static void __vlan_del_list(struct net_bridge_vlan *v) 1182594e906SNikolay Aleksandrov { 1192594e906SNikolay Aleksandrov list_del(&v->vlist); 120243a2e63SVlad Yasevich } 121243a2e63SVlad Yasevich 122bf361ad3SVivien Didelot static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, 1237f109539SScott Feldman u16 vid) 1247f109539SScott Feldman { 1257f109539SScott Feldman const struct net_device_ops *ops = dev->netdev_ops; 126bf361ad3SVivien Didelot int err = 0; 1277f109539SScott Feldman 1287f109539SScott Feldman /* If driver uses VLAN ndo ops, use 8021q to delete vid 1297f109539SScott Feldman * on device, otherwise try switchdev ops to delete vid. 1307f109539SScott Feldman */ 1317f109539SScott Feldman 1327f109539SScott Feldman if (ops->ndo_vlan_rx_kill_vid) { 1337f109539SScott Feldman vlan_vid_del(dev, br->vlan_proto, vid); 1347f109539SScott Feldman } else { 1358f24f309SJiri Pirko struct switchdev_obj_port_vlan v = { 1363e3a78b4SScott Feldman .vid_begin = vid, 1377f109539SScott Feldman .vid_end = vid, 1387f109539SScott Feldman }; 1397f109539SScott Feldman 14057d80838SJiri Pirko err = switchdev_port_obj_del(dev, SWITCHDEV_OBJ_ID_PORT_VLAN, 14157d80838SJiri Pirko &v); 142bf361ad3SVivien Didelot if (err == -EOPNOTSUPP) 143bf361ad3SVivien Didelot err = 0; 1447f109539SScott Feldman } 145bf361ad3SVivien Didelot 146bf361ad3SVivien Didelot return err; 1477f109539SScott Feldman } 1487f109539SScott Feldman 1492594e906SNikolay Aleksandrov /* This is the shared VLAN add function which works for both ports and bridge 1502594e906SNikolay Aleksandrov * devices. There are four possible calls to this function in terms of the 1512594e906SNikolay Aleksandrov * vlan entry type: 1522594e906SNikolay Aleksandrov * 1. vlan is being added on a port (no master flags, global entry exists) 1532594e906SNikolay Aleksandrov * 2. vlan is being added on a bridge (both master and brvlan flags) 1542594e906SNikolay Aleksandrov * 3. vlan is being added on a port, but a global entry didn't exist which 1552594e906SNikolay Aleksandrov * is being created right now (master flag set, brvlan flag unset), the 1562594e906SNikolay Aleksandrov * global entry is used for global per-vlan features, but not for filtering 1572594e906SNikolay Aleksandrov * 4. same as 3 but with both master and brvlan flags set so the entry 1582594e906SNikolay Aleksandrov * will be used for filtering in both the port and the bridge 1592594e906SNikolay Aleksandrov */ 1602594e906SNikolay Aleksandrov static int __vlan_add(struct net_bridge_vlan *v, u16 flags) 161243a2e63SVlad Yasevich { 1622594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = NULL; 1632594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 1642594e906SNikolay Aleksandrov struct rhashtable *tbl; 1652594e906SNikolay Aleksandrov struct net_device *dev; 1662594e906SNikolay Aleksandrov struct net_bridge *br; 167bf361ad3SVivien Didelot int err; 168bf361ad3SVivien Didelot 1692594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 1702594e906SNikolay Aleksandrov br = v->br; 1712594e906SNikolay Aleksandrov dev = br->dev; 1722594e906SNikolay Aleksandrov tbl = &br->vlgrp->vlan_hash; 1732594e906SNikolay Aleksandrov } else { 1742594e906SNikolay Aleksandrov p = v->port; 1752594e906SNikolay Aleksandrov br = p->br; 1762594e906SNikolay Aleksandrov dev = p->dev; 1772594e906SNikolay Aleksandrov tbl = &p->vlgrp->vlan_hash; 1782594e906SNikolay Aleksandrov } 1792594e906SNikolay Aleksandrov 1802594e906SNikolay Aleksandrov if (p) { 1812594e906SNikolay Aleksandrov u16 master_flags = flags; 1822594e906SNikolay Aleksandrov 1832594e906SNikolay Aleksandrov /* Add VLAN to the device filter if it is supported. 1842594e906SNikolay Aleksandrov * This ensures tagged traffic enters the bridge when 1852594e906SNikolay Aleksandrov * promiscuous mode is disabled by br_manage_promisc(). 1862594e906SNikolay Aleksandrov */ 1872594e906SNikolay Aleksandrov err = __vlan_vid_add(dev, br, v->vid, flags); 188bf361ad3SVivien Didelot if (err) 1892594e906SNikolay Aleksandrov goto out; 1902594e906SNikolay Aleksandrov 1912594e906SNikolay Aleksandrov /* need to work on the master vlan too */ 1922594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_MASTER) { 1932594e906SNikolay Aleksandrov master_flags |= BRIDGE_VLAN_INFO_BRENTRY; 1942594e906SNikolay Aleksandrov err = br_vlan_add(br, v->vid, master_flags); 1952594e906SNikolay Aleksandrov if (err) 1962594e906SNikolay Aleksandrov goto out_filt; 1972594e906SNikolay Aleksandrov } 1982594e906SNikolay Aleksandrov 1992594e906SNikolay Aleksandrov masterv = br_vlan_find(br->vlgrp, v->vid); 2002594e906SNikolay Aleksandrov if (!masterv) { 2012594e906SNikolay Aleksandrov /* missing global ctx, create it now */ 202248234caSNikolay Aleksandrov err = br_vlan_add(br, v->vid, 0); 2032594e906SNikolay Aleksandrov if (err) 2042594e906SNikolay Aleksandrov goto out_filt; 2052594e906SNikolay Aleksandrov masterv = br_vlan_find(br->vlgrp, v->vid); 2062594e906SNikolay Aleksandrov WARN_ON(!masterv); 2072594e906SNikolay Aleksandrov } 2082594e906SNikolay Aleksandrov atomic_inc(&masterv->refcnt); 2092594e906SNikolay Aleksandrov v->brvlan = masterv; 2102594e906SNikolay Aleksandrov } 2112594e906SNikolay Aleksandrov 2122594e906SNikolay Aleksandrov /* Add the dev mac only if it's a usable vlan */ 2132594e906SNikolay Aleksandrov if (br_vlan_should_use(v)) { 2142594e906SNikolay Aleksandrov err = br_fdb_insert(br, p, dev->dev_addr, v->vid); 2152594e906SNikolay Aleksandrov if (err) { 2162594e906SNikolay Aleksandrov br_err(br, "failed insert local address into bridge forwarding table\n"); 2172594e906SNikolay Aleksandrov goto out_filt; 2182594e906SNikolay Aleksandrov } 2192594e906SNikolay Aleksandrov } 2202594e906SNikolay Aleksandrov 2212594e906SNikolay Aleksandrov err = rhashtable_lookup_insert_fast(tbl, &v->vnode, br_vlan_rht_params); 2222594e906SNikolay Aleksandrov if (err) 2232594e906SNikolay Aleksandrov goto out_fdb_insert; 2242594e906SNikolay Aleksandrov 2252594e906SNikolay Aleksandrov __vlan_add_list(v); 2262594e906SNikolay Aleksandrov __vlan_add_flags(v, flags); 2272594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 2282594e906SNikolay Aleksandrov if (br_vlan_is_brentry(v)) 2292594e906SNikolay Aleksandrov br->vlgrp->num_vlans++; 2302594e906SNikolay Aleksandrov } else { 2312594e906SNikolay Aleksandrov p->vlgrp->num_vlans++; 2322594e906SNikolay Aleksandrov } 2332594e906SNikolay Aleksandrov out: 2342594e906SNikolay Aleksandrov return err; 2352594e906SNikolay Aleksandrov 2362594e906SNikolay Aleksandrov out_fdb_insert: 2372594e906SNikolay Aleksandrov br_fdb_find_delete_local(br, p, br->dev->dev_addr, v->vid); 2382594e906SNikolay Aleksandrov 2392594e906SNikolay Aleksandrov out_filt: 2402594e906SNikolay Aleksandrov if (p) { 2412594e906SNikolay Aleksandrov __vlan_vid_del(dev, br, v->vid); 2422594e906SNikolay Aleksandrov if (masterv) { 2432594e906SNikolay Aleksandrov atomic_dec(&masterv->refcnt); 2442594e906SNikolay Aleksandrov v->brvlan = NULL; 2452594e906SNikolay Aleksandrov } 2462594e906SNikolay Aleksandrov } 2472594e906SNikolay Aleksandrov 2482594e906SNikolay Aleksandrov goto out; 2492594e906SNikolay Aleksandrov } 2502594e906SNikolay Aleksandrov 2512594e906SNikolay Aleksandrov static int __vlan_del(struct net_bridge_vlan *v) 2522594e906SNikolay Aleksandrov { 2532594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = v; 25477751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2552594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2562594e906SNikolay Aleksandrov struct net_bridge *br; 2572594e906SNikolay Aleksandrov int err = 0; 2582594e906SNikolay Aleksandrov 2592594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 2602594e906SNikolay Aleksandrov br = v->br; 26177751ee8SNikolay Aleksandrov vg = v->br->vlgrp; 2622594e906SNikolay Aleksandrov } else { 2632594e906SNikolay Aleksandrov p = v->port; 2642594e906SNikolay Aleksandrov br = p->br; 26577751ee8SNikolay Aleksandrov vg = v->port->vlgrp; 2662594e906SNikolay Aleksandrov masterv = v->brvlan; 2672594e906SNikolay Aleksandrov } 2682594e906SNikolay Aleksandrov 26977751ee8SNikolay Aleksandrov __vlan_delete_pvid(vg, v->vid); 2702594e906SNikolay Aleksandrov if (p) { 2712594e906SNikolay Aleksandrov err = __vlan_vid_del(p->dev, p->br, v->vid); 2722594e906SNikolay Aleksandrov if (err) 2732594e906SNikolay Aleksandrov goto out; 2742594e906SNikolay Aleksandrov } 2752594e906SNikolay Aleksandrov 2762594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 2772594e906SNikolay Aleksandrov if (br_vlan_is_brentry(v)) { 2782594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; 2792594e906SNikolay Aleksandrov br->vlgrp->num_vlans--; 2802594e906SNikolay Aleksandrov } 2812594e906SNikolay Aleksandrov } else { 2822594e906SNikolay Aleksandrov p->vlgrp->num_vlans--; 2832594e906SNikolay Aleksandrov } 2842594e906SNikolay Aleksandrov 2852594e906SNikolay Aleksandrov if (masterv != v) { 28677751ee8SNikolay Aleksandrov rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, 28777751ee8SNikolay Aleksandrov br_vlan_rht_params); 2882594e906SNikolay Aleksandrov __vlan_del_list(v); 2892594e906SNikolay Aleksandrov kfree_rcu(v, rcu); 2902594e906SNikolay Aleksandrov } 2912594e906SNikolay Aleksandrov 2922594e906SNikolay Aleksandrov if (atomic_dec_and_test(&masterv->refcnt)) { 2932594e906SNikolay Aleksandrov rhashtable_remove_fast(&masterv->br->vlgrp->vlan_hash, 2942594e906SNikolay Aleksandrov &masterv->vnode, br_vlan_rht_params); 2952594e906SNikolay Aleksandrov __vlan_del_list(masterv); 2962594e906SNikolay Aleksandrov kfree_rcu(masterv, rcu); 2972594e906SNikolay Aleksandrov } 2982594e906SNikolay Aleksandrov out: 299bf361ad3SVivien Didelot return err; 3008580e211SToshiaki Makita } 301243a2e63SVlad Yasevich 30277751ee8SNikolay Aleksandrov static void __vlan_flush(struct net_bridge_vlan_group *vlgrp) 303243a2e63SVlad Yasevich { 3042594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan, *tmp; 3052594e906SNikolay Aleksandrov 30677751ee8SNikolay Aleksandrov __vlan_delete_pvid(vlgrp, vlgrp->pvid); 3072594e906SNikolay Aleksandrov list_for_each_entry_safe(vlan, tmp, &vlgrp->vlan_list, vlist) 3082594e906SNikolay Aleksandrov __vlan_del(vlan); 3092594e906SNikolay Aleksandrov rhashtable_destroy(&vlgrp->vlan_hash); 3102594e906SNikolay Aleksandrov kfree(vlgrp); 311243a2e63SVlad Yasevich } 312243a2e63SVlad Yasevich 31378851988SVlad Yasevich struct sk_buff *br_handle_vlan(struct net_bridge *br, 3142594e906SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 315a37b85c9SVlad Yasevich struct sk_buff *skb) 316a37b85c9SVlad Yasevich { 3172594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 318a37b85c9SVlad Yasevich u16 vid; 319a37b85c9SVlad Yasevich 32020adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 32120adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 32278851988SVlad Yasevich goto out; 32378851988SVlad Yasevich 3242594e906SNikolay Aleksandrov /* At this point, we know that the frame was filtered and contains 3252594e906SNikolay Aleksandrov * a valid vlan id. If the vlan id has untagged flag set, 3262594e906SNikolay Aleksandrov * send untagged; otherwise, send tagged. 3272594e906SNikolay Aleksandrov */ 3282594e906SNikolay Aleksandrov br_vlan_get_tag(skb, &vid); 3292594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 3302594e906SNikolay Aleksandrov /* Vlan entry must be configured at this point. The 331fc92f745SVlad Yasevich * only exception is the bridge is set in promisc mode and the 332fc92f745SVlad Yasevich * packet is destined for the bridge device. In this case 333fc92f745SVlad Yasevich * pass the packet as is. 334fc92f745SVlad Yasevich */ 3352594e906SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) { 336fc92f745SVlad Yasevich if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { 337fc92f745SVlad Yasevich goto out; 338fc92f745SVlad Yasevich } else { 339fc92f745SVlad Yasevich kfree_skb(skb); 340fc92f745SVlad Yasevich return NULL; 341fc92f745SVlad Yasevich } 342fc92f745SVlad Yasevich } 3432594e906SNikolay Aleksandrov if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 34499b192daSToshiaki Makita skb->vlan_tci = 0; 34578851988SVlad Yasevich 34678851988SVlad Yasevich out: 34778851988SVlad Yasevich return skb; 34878851988SVlad Yasevich } 34978851988SVlad Yasevich 35078851988SVlad Yasevich /* Called under RCU */ 35177751ee8SNikolay Aleksandrov static bool __allowed_ingress(struct net_bridge_vlan_group *vg, __be16 proto, 35278851988SVlad Yasevich struct sk_buff *skb, u16 *vid) 35378851988SVlad Yasevich { 3542594e906SNikolay Aleksandrov const struct net_bridge_vlan *v; 3558580e211SToshiaki Makita bool tagged; 356a37b85c9SVlad Yasevich 35720adfa1aSVlad Yasevich BR_INPUT_SKB_CB(skb)->vlan_filtered = true; 35812464bb8SToshiaki Makita /* If vlan tx offload is disabled on bridge device and frame was 35912464bb8SToshiaki Makita * sent from vlan device on the bridge device, it does not have 36012464bb8SToshiaki Makita * HW accelerated vlan tag. 36112464bb8SToshiaki Makita */ 362df8a39deSJiri Pirko if (unlikely(!skb_vlan_tag_present(skb) && 3638580e211SToshiaki Makita skb->protocol == proto)) { 3640d5501c1SVlad Yasevich skb = skb_vlan_untag(skb); 36512464bb8SToshiaki Makita if (unlikely(!skb)) 36612464bb8SToshiaki Makita return false; 36712464bb8SToshiaki Makita } 36812464bb8SToshiaki Makita 3698580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid)) { 3708580e211SToshiaki Makita /* Tagged frame */ 3718580e211SToshiaki Makita if (skb->vlan_proto != proto) { 3728580e211SToshiaki Makita /* Protocol-mismatch, empty out vlan_tci for new tag */ 3738580e211SToshiaki Makita skb_push(skb, ETH_HLEN); 37462749e2cSJiri Pirko skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, 375df8a39deSJiri Pirko skb_vlan_tag_get(skb)); 3768580e211SToshiaki Makita if (unlikely(!skb)) 3778580e211SToshiaki Makita return false; 3788580e211SToshiaki Makita 3798580e211SToshiaki Makita skb_pull(skb, ETH_HLEN); 3808580e211SToshiaki Makita skb_reset_mac_len(skb); 3818580e211SToshiaki Makita *vid = 0; 3828580e211SToshiaki Makita tagged = false; 3838580e211SToshiaki Makita } else { 3848580e211SToshiaki Makita tagged = true; 3858580e211SToshiaki Makita } 3868580e211SToshiaki Makita } else { 3878580e211SToshiaki Makita /* Untagged frame */ 3888580e211SToshiaki Makita tagged = false; 3898580e211SToshiaki Makita } 3908580e211SToshiaki Makita 391b90356ceSToshiaki Makita if (!*vid) { 39277751ee8SNikolay Aleksandrov u16 pvid = br_get_pvid(vg); 39377751ee8SNikolay Aleksandrov 394b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 395b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 396b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 39778851988SVlad Yasevich */ 3983df6bf45SVlad Yasevich if (!pvid) 399eb707618SToshiaki Makita goto drop; 40078851988SVlad Yasevich 401b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 402b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 40378851988SVlad Yasevich */ 404dfb5fa32SToshiaki Makita *vid = pvid; 4058580e211SToshiaki Makita if (likely(!tagged)) 406b90356ceSToshiaki Makita /* Untagged Frame. */ 4078580e211SToshiaki Makita __vlan_hwaccel_put_tag(skb, proto, pvid); 408b90356ceSToshiaki Makita else 409b90356ceSToshiaki Makita /* Priority-tagged Frame. 410b90356ceSToshiaki Makita * At this point, We know that skb->vlan_tci had 411b90356ceSToshiaki Makita * VLAN_TAG_PRESENT bit and its VID field was 0x000. 412b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 413b90356ceSToshiaki Makita */ 414b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 415b90356ceSToshiaki Makita 41678851988SVlad Yasevich return true; 41778851988SVlad Yasevich } 41878851988SVlad Yasevich 41978851988SVlad Yasevich /* Frame had a valid vlan tag. See if vlan is allowed */ 42077751ee8SNikolay Aleksandrov v = br_vlan_find(vg, *vid); 4212594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v)) 422a37b85c9SVlad Yasevich return true; 423eb707618SToshiaki Makita drop: 424eb707618SToshiaki Makita kfree_skb(skb); 425a37b85c9SVlad Yasevich return false; 426a37b85c9SVlad Yasevich } 427a37b85c9SVlad Yasevich 42877751ee8SNikolay Aleksandrov bool br_allowed_ingress(const struct net_bridge *br, 42977751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg, struct sk_buff *skb, 4302594e906SNikolay Aleksandrov u16 *vid) 4312594e906SNikolay Aleksandrov { 4322594e906SNikolay Aleksandrov /* If VLAN filtering is disabled on the bridge, all packets are 4332594e906SNikolay Aleksandrov * permitted. 4342594e906SNikolay Aleksandrov */ 4352594e906SNikolay Aleksandrov if (!br->vlan_enabled) { 4362594e906SNikolay Aleksandrov BR_INPUT_SKB_CB(skb)->vlan_filtered = false; 4372594e906SNikolay Aleksandrov return true; 4382594e906SNikolay Aleksandrov } 4392594e906SNikolay Aleksandrov 44077751ee8SNikolay Aleksandrov return __allowed_ingress(vg, br->vlan_proto, skb, vid); 4412594e906SNikolay Aleksandrov } 4422594e906SNikolay Aleksandrov 44385f46c6bSVlad Yasevich /* Called under RCU. */ 4442594e906SNikolay Aleksandrov bool br_allowed_egress(struct net_bridge_vlan_group *vg, 44585f46c6bSVlad Yasevich const struct sk_buff *skb) 44685f46c6bSVlad Yasevich { 4472594e906SNikolay Aleksandrov const struct net_bridge_vlan *v; 44885f46c6bSVlad Yasevich u16 vid; 44985f46c6bSVlad Yasevich 45020adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 45120adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 45285f46c6bSVlad Yasevich return true; 45385f46c6bSVlad Yasevich 45485f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 4552594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 4562594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v)) 45785f46c6bSVlad Yasevich return true; 45885f46c6bSVlad Yasevich 45985f46c6bSVlad Yasevich return false; 46085f46c6bSVlad Yasevich } 46185f46c6bSVlad Yasevich 462e0d7968aSToshiaki Makita /* Called under RCU */ 463e0d7968aSToshiaki Makita bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) 464e0d7968aSToshiaki Makita { 465468e7944SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 466e0d7968aSToshiaki Makita struct net_bridge *br = p->br; 467e0d7968aSToshiaki Makita 46820adfa1aSVlad Yasevich /* If filtering was disabled at input, let it pass. */ 469c095f248SVlad Yasevich if (!br->vlan_enabled) 470e0d7968aSToshiaki Makita return true; 471e0d7968aSToshiaki Makita 472468e7944SNikolay Aleksandrov vg = p->vlgrp; 473468e7944SNikolay Aleksandrov if (!vg || !vg->num_vlans) 474e0d7968aSToshiaki Makita return false; 475e0d7968aSToshiaki Makita 4768580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) 4778580e211SToshiaki Makita *vid = 0; 4788580e211SToshiaki Makita 479e0d7968aSToshiaki Makita if (!*vid) { 48077751ee8SNikolay Aleksandrov *vid = br_get_pvid(vg); 4813df6bf45SVlad Yasevich if (!*vid) 482e0d7968aSToshiaki Makita return false; 483e0d7968aSToshiaki Makita 484e0d7968aSToshiaki Makita return true; 485e0d7968aSToshiaki Makita } 486e0d7968aSToshiaki Makita 48777751ee8SNikolay Aleksandrov if (br_vlan_find(vg, *vid)) 488e0d7968aSToshiaki Makita return true; 489e0d7968aSToshiaki Makita 490e0d7968aSToshiaki Makita return false; 491e0d7968aSToshiaki Makita } 492e0d7968aSToshiaki Makita 4938adff41cSToshiaki Makita /* Must be protected by RTNL. 4948adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 4958adff41cSToshiaki Makita */ 496552406c4SVlad Yasevich int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) 497243a2e63SVlad Yasevich { 4982594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 4992594e906SNikolay Aleksandrov int ret; 500243a2e63SVlad Yasevich 501243a2e63SVlad Yasevich ASSERT_RTNL(); 502243a2e63SVlad Yasevich 5032594e906SNikolay Aleksandrov vlan = br_vlan_find(br->vlgrp, vid); 5042594e906SNikolay Aleksandrov if (vlan) { 5052594e906SNikolay Aleksandrov if (!br_vlan_is_brentry(vlan)) { 5062594e906SNikolay Aleksandrov /* Trying to change flags of non-existent bridge vlan */ 5072594e906SNikolay Aleksandrov if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) 5082594e906SNikolay Aleksandrov return -EINVAL; 5092594e906SNikolay Aleksandrov /* It was only kept for port vlans, now make it real */ 5102594e906SNikolay Aleksandrov ret = br_fdb_insert(br, NULL, br->dev->dev_addr, 5112594e906SNikolay Aleksandrov vlan->vid); 5122594e906SNikolay Aleksandrov if (ret) { 5132594e906SNikolay Aleksandrov br_err(br, "failed insert local address into bridge forwarding table\n"); 5142594e906SNikolay Aleksandrov return ret; 5152594e906SNikolay Aleksandrov } 5162594e906SNikolay Aleksandrov atomic_inc(&vlan->refcnt); 5172594e906SNikolay Aleksandrov vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; 5182594e906SNikolay Aleksandrov br->vlgrp->num_vlans++; 5192594e906SNikolay Aleksandrov } 5202594e906SNikolay Aleksandrov __vlan_add_flags(vlan, flags); 5212594e906SNikolay Aleksandrov return 0; 5222594e906SNikolay Aleksandrov } 523243a2e63SVlad Yasevich 5242594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 5252594e906SNikolay Aleksandrov if (!vlan) 526243a2e63SVlad Yasevich return -ENOMEM; 527243a2e63SVlad Yasevich 5282594e906SNikolay Aleksandrov vlan->vid = vid; 5292594e906SNikolay Aleksandrov vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; 5302594e906SNikolay Aleksandrov vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; 5312594e906SNikolay Aleksandrov vlan->br = br; 5322594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_BRENTRY) 5332594e906SNikolay Aleksandrov atomic_set(&vlan->refcnt, 1); 5342594e906SNikolay Aleksandrov ret = __vlan_add(vlan, flags); 5352594e906SNikolay Aleksandrov if (ret) 5362594e906SNikolay Aleksandrov kfree(vlan); 537243a2e63SVlad Yasevich 5382594e906SNikolay Aleksandrov return ret; 539243a2e63SVlad Yasevich } 540243a2e63SVlad Yasevich 5418adff41cSToshiaki Makita /* Must be protected by RTNL. 5428adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 5438adff41cSToshiaki Makita */ 544243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 545243a2e63SVlad Yasevich { 5462594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 547243a2e63SVlad Yasevich 548243a2e63SVlad Yasevich ASSERT_RTNL(); 549243a2e63SVlad Yasevich 5502594e906SNikolay Aleksandrov v = br_vlan_find(br->vlgrp, vid); 5512594e906SNikolay Aleksandrov if (!v || !br_vlan_is_brentry(v)) 5522594e906SNikolay Aleksandrov return -ENOENT; 553243a2e63SVlad Yasevich 554424bb9c9SToshiaki Makita br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); 555bc9a25d2SVlad Yasevich 5562594e906SNikolay Aleksandrov return __vlan_del(v); 557243a2e63SVlad Yasevich } 558243a2e63SVlad Yasevich 559243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 560243a2e63SVlad Yasevich { 561243a2e63SVlad Yasevich ASSERT_RTNL(); 562243a2e63SVlad Yasevich 56377751ee8SNikolay Aleksandrov __vlan_flush(br_vlan_group(br)); 564243a2e63SVlad Yasevich } 565243a2e63SVlad Yasevich 5662594e906SNikolay Aleksandrov struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) 5672b292fb4SToshiaki Makita { 5682594e906SNikolay Aleksandrov if (!vg) 5692594e906SNikolay Aleksandrov return NULL; 5702b292fb4SToshiaki Makita 5712594e906SNikolay Aleksandrov return br_vlan_lookup(&vg->vlan_hash, vid); 5722b292fb4SToshiaki Makita } 5732b292fb4SToshiaki Makita 574204177f3SToshiaki Makita /* Must be protected by RTNL. */ 575204177f3SToshiaki Makita static void recalculate_group_addr(struct net_bridge *br) 576204177f3SToshiaki Makita { 577204177f3SToshiaki Makita if (br->group_addr_set) 578204177f3SToshiaki Makita return; 579204177f3SToshiaki Makita 580204177f3SToshiaki Makita spin_lock_bh(&br->lock); 581204177f3SToshiaki Makita if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) { 582204177f3SToshiaki Makita /* Bridge Group Address */ 583204177f3SToshiaki Makita br->group_addr[5] = 0x00; 584204177f3SToshiaki Makita } else { /* vlan_enabled && ETH_P_8021AD */ 585204177f3SToshiaki Makita /* Provider Bridge Group Address */ 586204177f3SToshiaki Makita br->group_addr[5] = 0x08; 587204177f3SToshiaki Makita } 588204177f3SToshiaki Makita spin_unlock_bh(&br->lock); 589204177f3SToshiaki Makita } 590204177f3SToshiaki Makita 591204177f3SToshiaki Makita /* Must be protected by RTNL. */ 592204177f3SToshiaki Makita void br_recalculate_fwd_mask(struct net_bridge *br) 593204177f3SToshiaki Makita { 594204177f3SToshiaki Makita if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) 595204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; 596204177f3SToshiaki Makita else /* vlan_enabled && ETH_P_8021AD */ 597204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_8021AD & 598204177f3SToshiaki Makita ~(1u << br->group_addr[5]); 599204177f3SToshiaki Makita } 600204177f3SToshiaki Makita 601a7854037SNikolay Aleksandrov int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) 602243a2e63SVlad Yasevich { 603243a2e63SVlad Yasevich if (br->vlan_enabled == val) 604a7854037SNikolay Aleksandrov return 0; 605243a2e63SVlad Yasevich 606243a2e63SVlad Yasevich br->vlan_enabled = val; 6072796d0c6SVlad Yasevich br_manage_promisc(br); 608204177f3SToshiaki Makita recalculate_group_addr(br); 609204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 610243a2e63SVlad Yasevich 611a7854037SNikolay Aleksandrov return 0; 612a7854037SNikolay Aleksandrov } 613a7854037SNikolay Aleksandrov 614a7854037SNikolay Aleksandrov int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) 615a7854037SNikolay Aleksandrov { 616a7854037SNikolay Aleksandrov if (!rtnl_trylock()) 617a7854037SNikolay Aleksandrov return restart_syscall(); 618a7854037SNikolay Aleksandrov 619a7854037SNikolay Aleksandrov __br_vlan_filter_toggle(br, val); 620243a2e63SVlad Yasevich rtnl_unlock(); 621a7854037SNikolay Aleksandrov 622243a2e63SVlad Yasevich return 0; 623243a2e63SVlad Yasevich } 624243a2e63SVlad Yasevich 625d2d427b3SToshiaki Makita int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) 626204177f3SToshiaki Makita { 627204177f3SToshiaki Makita int err = 0; 628204177f3SToshiaki Makita struct net_bridge_port *p; 6292594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 630d2d427b3SToshiaki Makita __be16 oldproto; 631204177f3SToshiaki Makita 632204177f3SToshiaki Makita if (br->vlan_proto == proto) 633d2d427b3SToshiaki Makita return 0; 634204177f3SToshiaki Makita 635204177f3SToshiaki Makita /* Add VLANs for the new proto to the device filter. */ 636204177f3SToshiaki Makita list_for_each_entry(p, &br->port_list, list) { 6372594e906SNikolay Aleksandrov list_for_each_entry(vlan, &p->vlgrp->vlan_list, vlist) { 6382594e906SNikolay Aleksandrov err = vlan_vid_add(p->dev, proto, vlan->vid); 639204177f3SToshiaki Makita if (err) 640204177f3SToshiaki Makita goto err_filt; 641204177f3SToshiaki Makita } 642204177f3SToshiaki Makita } 643204177f3SToshiaki Makita 644204177f3SToshiaki Makita oldproto = br->vlan_proto; 645204177f3SToshiaki Makita br->vlan_proto = proto; 646204177f3SToshiaki Makita 647204177f3SToshiaki Makita recalculate_group_addr(br); 648204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 649204177f3SToshiaki Makita 650204177f3SToshiaki Makita /* Delete VLANs for the old proto from the device filter. */ 6512594e906SNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) 6522594e906SNikolay Aleksandrov list_for_each_entry(vlan, &p->vlgrp->vlan_list, vlist) 6532594e906SNikolay Aleksandrov vlan_vid_del(p->dev, oldproto, vlan->vid); 654204177f3SToshiaki Makita 655d2d427b3SToshiaki Makita return 0; 656204177f3SToshiaki Makita 657204177f3SToshiaki Makita err_filt: 6582594e906SNikolay Aleksandrov list_for_each_entry_continue_reverse(vlan, &p->vlgrp->vlan_list, vlist) 6592594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 660204177f3SToshiaki Makita 6612594e906SNikolay Aleksandrov list_for_each_entry_continue_reverse(p, &br->port_list, list) 6622594e906SNikolay Aleksandrov list_for_each_entry(vlan, &p->vlgrp->vlan_list, vlist) 6632594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 664204177f3SToshiaki Makita 665d2d427b3SToshiaki Makita return err; 666d2d427b3SToshiaki Makita } 667d2d427b3SToshiaki Makita 668d2d427b3SToshiaki Makita int br_vlan_set_proto(struct net_bridge *br, unsigned long val) 669d2d427b3SToshiaki Makita { 670d2d427b3SToshiaki Makita int err; 671d2d427b3SToshiaki Makita 672d2d427b3SToshiaki Makita if (val != ETH_P_8021Q && val != ETH_P_8021AD) 673d2d427b3SToshiaki Makita return -EPROTONOSUPPORT; 674d2d427b3SToshiaki Makita 675d2d427b3SToshiaki Makita if (!rtnl_trylock()) 676d2d427b3SToshiaki Makita return restart_syscall(); 677d2d427b3SToshiaki Makita 678d2d427b3SToshiaki Makita err = __br_vlan_set_proto(br, htons(val)); 679d2d427b3SToshiaki Makita rtnl_unlock(); 680d2d427b3SToshiaki Makita 681d2d427b3SToshiaki Makita return err; 682204177f3SToshiaki Makita } 683204177f3SToshiaki Makita 68477751ee8SNikolay Aleksandrov static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) 6855be5a2dfSVlad Yasevich { 6862594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 6872594e906SNikolay Aleksandrov 68877751ee8SNikolay Aleksandrov if (vid != vg->pvid) 6892594e906SNikolay Aleksandrov return false; 6902594e906SNikolay Aleksandrov 6912594e906SNikolay Aleksandrov v = br_vlan_lookup(&vg->vlan_hash, vid); 6922594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v) && 6932594e906SNikolay Aleksandrov (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 6942594e906SNikolay Aleksandrov return true; 6952594e906SNikolay Aleksandrov 6962594e906SNikolay Aleksandrov return false; 6975be5a2dfSVlad Yasevich } 6985be5a2dfSVlad Yasevich 6995be5a2dfSVlad Yasevich static void br_vlan_disable_default_pvid(struct net_bridge *br) 7005be5a2dfSVlad Yasevich { 7015be5a2dfSVlad Yasevich struct net_bridge_port *p; 7025be5a2dfSVlad Yasevich u16 pvid = br->default_pvid; 7035be5a2dfSVlad Yasevich 7045be5a2dfSVlad Yasevich /* Disable default_pvid on all ports where it is still 7055be5a2dfSVlad Yasevich * configured. 7065be5a2dfSVlad Yasevich */ 70777751ee8SNikolay Aleksandrov if (vlan_default_pvid(br->vlgrp, pvid)) 7085be5a2dfSVlad Yasevich br_vlan_delete(br, pvid); 7095be5a2dfSVlad Yasevich 7105be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 71177751ee8SNikolay Aleksandrov if (vlan_default_pvid(p->vlgrp, pvid)) 7125be5a2dfSVlad Yasevich nbp_vlan_delete(p, pvid); 7135be5a2dfSVlad Yasevich } 7145be5a2dfSVlad Yasevich 7155be5a2dfSVlad Yasevich br->default_pvid = 0; 7165be5a2dfSVlad Yasevich } 7175be5a2dfSVlad Yasevich 7185be5a2dfSVlad Yasevich static int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid) 7195be5a2dfSVlad Yasevich { 7202594e906SNikolay Aleksandrov const struct net_bridge_vlan *pvent; 7215be5a2dfSVlad Yasevich struct net_bridge_port *p; 7225be5a2dfSVlad Yasevich u16 old_pvid; 7235be5a2dfSVlad Yasevich int err = 0; 7245be5a2dfSVlad Yasevich unsigned long *changed; 7255be5a2dfSVlad Yasevich 7265be5a2dfSVlad Yasevich changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long), 7275be5a2dfSVlad Yasevich GFP_KERNEL); 7285be5a2dfSVlad Yasevich if (!changed) 7295be5a2dfSVlad Yasevich return -ENOMEM; 7305be5a2dfSVlad Yasevich 7315be5a2dfSVlad Yasevich old_pvid = br->default_pvid; 7325be5a2dfSVlad Yasevich 7335be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 7345be5a2dfSVlad Yasevich * user configuration. 7355be5a2dfSVlad Yasevich */ 7362594e906SNikolay Aleksandrov pvent = br_vlan_find(br->vlgrp, pvid); 73777751ee8SNikolay Aleksandrov if ((!old_pvid || vlan_default_pvid(br->vlgrp, old_pvid)) && 7382594e906SNikolay Aleksandrov (!pvent || !br_vlan_should_use(pvent))) { 7395be5a2dfSVlad Yasevich err = br_vlan_add(br, pvid, 7405be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 7412594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 7422594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY); 7435be5a2dfSVlad Yasevich if (err) 7445be5a2dfSVlad Yasevich goto out; 7455be5a2dfSVlad Yasevich br_vlan_delete(br, old_pvid); 7465be5a2dfSVlad Yasevich set_bit(0, changed); 7475be5a2dfSVlad Yasevich } 7485be5a2dfSVlad Yasevich 7495be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 7505be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 7515be5a2dfSVlad Yasevich * user configuration. 7525be5a2dfSVlad Yasevich */ 7535be5a2dfSVlad Yasevich if ((old_pvid && 75477751ee8SNikolay Aleksandrov !vlan_default_pvid(p->vlgrp, old_pvid)) || 7552594e906SNikolay Aleksandrov br_vlan_find(p->vlgrp, pvid)) 7565be5a2dfSVlad Yasevich continue; 7575be5a2dfSVlad Yasevich 7585be5a2dfSVlad Yasevich err = nbp_vlan_add(p, pvid, 7595be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 7605be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_UNTAGGED); 7615be5a2dfSVlad Yasevich if (err) 7625be5a2dfSVlad Yasevich goto err_port; 7635be5a2dfSVlad Yasevich nbp_vlan_delete(p, old_pvid); 7645be5a2dfSVlad Yasevich set_bit(p->port_no, changed); 7655be5a2dfSVlad Yasevich } 7665be5a2dfSVlad Yasevich 7675be5a2dfSVlad Yasevich br->default_pvid = pvid; 7685be5a2dfSVlad Yasevich 7695be5a2dfSVlad Yasevich out: 7705be5a2dfSVlad Yasevich kfree(changed); 7715be5a2dfSVlad Yasevich return err; 7725be5a2dfSVlad Yasevich 7735be5a2dfSVlad Yasevich err_port: 7745be5a2dfSVlad Yasevich list_for_each_entry_continue_reverse(p, &br->port_list, list) { 7755be5a2dfSVlad Yasevich if (!test_bit(p->port_no, changed)) 7765be5a2dfSVlad Yasevich continue; 7775be5a2dfSVlad Yasevich 7785be5a2dfSVlad Yasevich if (old_pvid) 7795be5a2dfSVlad Yasevich nbp_vlan_add(p, old_pvid, 7805be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 7815be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_UNTAGGED); 7825be5a2dfSVlad Yasevich nbp_vlan_delete(p, pvid); 7835be5a2dfSVlad Yasevich } 7845be5a2dfSVlad Yasevich 7855be5a2dfSVlad Yasevich if (test_bit(0, changed)) { 7865be5a2dfSVlad Yasevich if (old_pvid) 7875be5a2dfSVlad Yasevich br_vlan_add(br, old_pvid, 7885be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 7892594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 7902594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY); 7915be5a2dfSVlad Yasevich br_vlan_delete(br, pvid); 7925be5a2dfSVlad Yasevich } 7935be5a2dfSVlad Yasevich goto out; 7945be5a2dfSVlad Yasevich } 7955be5a2dfSVlad Yasevich 79696a20d9dSVlad Yasevich int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val) 79796a20d9dSVlad Yasevich { 79896a20d9dSVlad Yasevich u16 pvid = val; 79996a20d9dSVlad Yasevich int err = 0; 80096a20d9dSVlad Yasevich 8015be5a2dfSVlad Yasevich if (val >= VLAN_VID_MASK) 80296a20d9dSVlad Yasevich return -EINVAL; 80396a20d9dSVlad Yasevich 80496a20d9dSVlad Yasevich if (!rtnl_trylock()) 80596a20d9dSVlad Yasevich return restart_syscall(); 80696a20d9dSVlad Yasevich 80796a20d9dSVlad Yasevich if (pvid == br->default_pvid) 80896a20d9dSVlad Yasevich goto unlock; 80996a20d9dSVlad Yasevich 81096a20d9dSVlad Yasevich /* Only allow default pvid change when filtering is disabled */ 81196a20d9dSVlad Yasevich if (br->vlan_enabled) { 81296a20d9dSVlad Yasevich pr_info_once("Please disable vlan filtering to change default_pvid\n"); 81396a20d9dSVlad Yasevich err = -EPERM; 81496a20d9dSVlad Yasevich goto unlock; 81596a20d9dSVlad Yasevich } 81696a20d9dSVlad Yasevich 8175be5a2dfSVlad Yasevich if (!pvid) 8185be5a2dfSVlad Yasevich br_vlan_disable_default_pvid(br); 8195be5a2dfSVlad Yasevich else 8205be5a2dfSVlad Yasevich err = __br_vlan_set_default_pvid(br, pvid); 82196a20d9dSVlad Yasevich 82296a20d9dSVlad Yasevich unlock: 82396a20d9dSVlad Yasevich rtnl_unlock(); 82496a20d9dSVlad Yasevich return err; 82596a20d9dSVlad Yasevich } 82696a20d9dSVlad Yasevich 8275be5a2dfSVlad Yasevich int br_vlan_init(struct net_bridge *br) 8288580e211SToshiaki Makita { 8292594e906SNikolay Aleksandrov int ret = -ENOMEM; 8302594e906SNikolay Aleksandrov 8312594e906SNikolay Aleksandrov br->vlgrp = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); 8322594e906SNikolay Aleksandrov if (!br->vlgrp) 8332594e906SNikolay Aleksandrov goto out; 8342594e906SNikolay Aleksandrov ret = rhashtable_init(&br->vlgrp->vlan_hash, &br_vlan_rht_params); 8352594e906SNikolay Aleksandrov if (ret) 8362594e906SNikolay Aleksandrov goto err_rhtbl; 8372594e906SNikolay Aleksandrov INIT_LIST_HEAD(&br->vlgrp->vlan_list); 8388580e211SToshiaki Makita br->vlan_proto = htons(ETH_P_8021Q); 83996a20d9dSVlad Yasevich br->default_pvid = 1; 8402594e906SNikolay Aleksandrov ret = br_vlan_add(br, 1, 8412594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED | 8422594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY); 8432594e906SNikolay Aleksandrov if (ret) 8442594e906SNikolay Aleksandrov goto err_vlan_add; 8452594e906SNikolay Aleksandrov 8462594e906SNikolay Aleksandrov out: 8472594e906SNikolay Aleksandrov return ret; 8482594e906SNikolay Aleksandrov 8492594e906SNikolay Aleksandrov err_vlan_add: 8502594e906SNikolay Aleksandrov rhashtable_destroy(&br->vlgrp->vlan_hash); 8512594e906SNikolay Aleksandrov err_rhtbl: 8522594e906SNikolay Aleksandrov kfree(br->vlgrp); 8532594e906SNikolay Aleksandrov 8542594e906SNikolay Aleksandrov goto out; 8552594e906SNikolay Aleksandrov } 8562594e906SNikolay Aleksandrov 8572594e906SNikolay Aleksandrov int nbp_vlan_init(struct net_bridge_port *p) 8582594e906SNikolay Aleksandrov { 859263344e6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 8602594e906SNikolay Aleksandrov int ret = -ENOMEM; 8612594e906SNikolay Aleksandrov 862263344e6SNikolay Aleksandrov vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); 863263344e6SNikolay Aleksandrov if (!vg) 8642594e906SNikolay Aleksandrov goto out; 8652594e906SNikolay Aleksandrov 866263344e6SNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 8672594e906SNikolay Aleksandrov if (ret) 8682594e906SNikolay Aleksandrov goto err_rhtbl; 869263344e6SNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 870263344e6SNikolay Aleksandrov /* Make sure everything's committed before publishing vg */ 871263344e6SNikolay Aleksandrov smp_wmb(); 872263344e6SNikolay Aleksandrov p->vlgrp = vg; 8732594e906SNikolay Aleksandrov if (p->br->default_pvid) { 8742594e906SNikolay Aleksandrov ret = nbp_vlan_add(p, p->br->default_pvid, 8752594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 8762594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED); 8772594e906SNikolay Aleksandrov if (ret) 8782594e906SNikolay Aleksandrov goto err_vlan_add; 8792594e906SNikolay Aleksandrov } 8802594e906SNikolay Aleksandrov out: 8812594e906SNikolay Aleksandrov return ret; 8822594e906SNikolay Aleksandrov 8832594e906SNikolay Aleksandrov err_vlan_add: 884263344e6SNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 8852594e906SNikolay Aleksandrov err_rhtbl: 886263344e6SNikolay Aleksandrov kfree(vg); 8872594e906SNikolay Aleksandrov 8882594e906SNikolay Aleksandrov goto out; 8898580e211SToshiaki Makita } 8908580e211SToshiaki Makita 8918adff41cSToshiaki Makita /* Must be protected by RTNL. 8928adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 8938adff41cSToshiaki Makita */ 894552406c4SVlad Yasevich int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) 895243a2e63SVlad Yasevich { 8962594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 8972594e906SNikolay Aleksandrov int ret; 898243a2e63SVlad Yasevich 899243a2e63SVlad Yasevich ASSERT_RTNL(); 900243a2e63SVlad Yasevich 9012594e906SNikolay Aleksandrov vlan = br_vlan_find(port->vlgrp, vid); 9022594e906SNikolay Aleksandrov if (vlan) { 9032594e906SNikolay Aleksandrov __vlan_add_flags(vlan, flags); 9042594e906SNikolay Aleksandrov return 0; 905243a2e63SVlad Yasevich } 906243a2e63SVlad Yasevich 9072594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 9082594e906SNikolay Aleksandrov if (!vlan) 9092594e906SNikolay Aleksandrov return -ENOMEM; 910243a2e63SVlad Yasevich 9112594e906SNikolay Aleksandrov vlan->vid = vid; 9122594e906SNikolay Aleksandrov vlan->port = port; 9132594e906SNikolay Aleksandrov ret = __vlan_add(vlan, flags); 9142594e906SNikolay Aleksandrov if (ret) 9152594e906SNikolay Aleksandrov kfree(vlan); 916243a2e63SVlad Yasevich 9172594e906SNikolay Aleksandrov return ret; 918243a2e63SVlad Yasevich } 919243a2e63SVlad Yasevich 9208adff41cSToshiaki Makita /* Must be protected by RTNL. 9218adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 9228adff41cSToshiaki Makita */ 923243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 924243a2e63SVlad Yasevich { 9252594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 926243a2e63SVlad Yasevich 927243a2e63SVlad Yasevich ASSERT_RTNL(); 928243a2e63SVlad Yasevich 9292594e906SNikolay Aleksandrov v = br_vlan_find(port->vlgrp, vid); 9302594e906SNikolay Aleksandrov if (!v) 9312594e906SNikolay Aleksandrov return -ENOENT; 932424bb9c9SToshiaki Makita br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); 9331ea2d020SNikolay Aleksandrov br_fdb_delete_by_port(port->br, port, vid, 0); 934bc9a25d2SVlad Yasevich 9352594e906SNikolay Aleksandrov return __vlan_del(v); 936243a2e63SVlad Yasevich } 937243a2e63SVlad Yasevich 938243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 939243a2e63SVlad Yasevich { 9402594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 941243a2e63SVlad Yasevich 942243a2e63SVlad Yasevich ASSERT_RTNL(); 943243a2e63SVlad Yasevich 9442594e906SNikolay Aleksandrov list_for_each_entry(vlan, &port->vlgrp->vlan_list, vlist) 9452594e906SNikolay Aleksandrov vlan_vid_del(port->dev, port->br->vlan_proto, vlan->vid); 946243a2e63SVlad Yasevich 94777751ee8SNikolay Aleksandrov __vlan_flush(nbp_vlan_group(port)); 9485be5a2dfSVlad Yasevich } 949