1457c8996SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2243a2e63SVlad Yasevich #include <linux/kernel.h> 3243a2e63SVlad Yasevich #include <linux/netdevice.h> 4243a2e63SVlad Yasevich #include <linux/rtnetlink.h> 5243a2e63SVlad Yasevich #include <linux/slab.h> 67f109539SScott Feldman #include <net/switchdev.h> 7243a2e63SVlad Yasevich 8243a2e63SVlad Yasevich #include "br_private.h" 9efa5356bSRoopa Prabhu #include "br_private_tunnel.h" 10243a2e63SVlad Yasevich 1180900acdSMike Manning static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid); 1280900acdSMike Manning 132594e906SNikolay Aleksandrov static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg, 142594e906SNikolay Aleksandrov const void *ptr) 15552406c4SVlad Yasevich { 162594e906SNikolay Aleksandrov const struct net_bridge_vlan *vle = ptr; 172594e906SNikolay Aleksandrov u16 vid = *(u16 *)arg->key; 182594e906SNikolay Aleksandrov 192594e906SNikolay Aleksandrov return vle->vid != vid; 202594e906SNikolay Aleksandrov } 212594e906SNikolay Aleksandrov 222594e906SNikolay Aleksandrov static const struct rhashtable_params br_vlan_rht_params = { 232594e906SNikolay Aleksandrov .head_offset = offsetof(struct net_bridge_vlan, vnode), 242594e906SNikolay Aleksandrov .key_offset = offsetof(struct net_bridge_vlan, vid), 252594e906SNikolay Aleksandrov .key_len = sizeof(u16), 268af78b64SNikolay Aleksandrov .nelem_hint = 3, 272594e906SNikolay Aleksandrov .max_size = VLAN_N_VID, 282594e906SNikolay Aleksandrov .obj_cmpfn = br_vlan_cmp, 292594e906SNikolay Aleksandrov .automatic_shrinking = true, 302594e906SNikolay Aleksandrov }; 312594e906SNikolay Aleksandrov 322594e906SNikolay Aleksandrov static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid) 332594e906SNikolay Aleksandrov { 342594e906SNikolay Aleksandrov return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params); 352594e906SNikolay Aleksandrov } 362594e906SNikolay Aleksandrov 3727c5f74cSVladimir Oltean static void __vlan_add_pvid(struct net_bridge_vlan_group *vg, 38a580c76dSNikolay Aleksandrov const struct net_bridge_vlan *v) 392594e906SNikolay Aleksandrov { 40a580c76dSNikolay Aleksandrov if (vg->pvid == v->vid) 4127c5f74cSVladimir Oltean return; 42552406c4SVlad Yasevich 43552406c4SVlad Yasevich smp_wmb(); 44a580c76dSNikolay Aleksandrov br_vlan_set_pvid_state(vg, v->state); 45a580c76dSNikolay Aleksandrov vg->pvid = v->vid; 46552406c4SVlad Yasevich } 47552406c4SVlad Yasevich 4827c5f74cSVladimir Oltean static void __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) 49552406c4SVlad Yasevich { 5077751ee8SNikolay Aleksandrov if (vg->pvid != vid) 5127c5f74cSVladimir Oltean return; 52552406c4SVlad Yasevich 53552406c4SVlad Yasevich smp_wmb(); 5477751ee8SNikolay Aleksandrov vg->pvid = 0; 55552406c4SVlad Yasevich } 56552406c4SVlad Yasevich 5727c5f74cSVladimir Oltean /* Update the BRIDGE_VLAN_INFO_PVID and BRIDGE_VLAN_INFO_UNTAGGED flags of @v. 5827c5f74cSVladimir Oltean * If @commit is false, return just whether the BRIDGE_VLAN_INFO_PVID and 5927c5f74cSVladimir Oltean * BRIDGE_VLAN_INFO_UNTAGGED bits of @flags would produce any change onto @v. 60cab2cd77SVladimir Oltean */ 6127c5f74cSVladimir Oltean static bool __vlan_flags_update(struct net_bridge_vlan *v, u16 flags, 6227c5f74cSVladimir Oltean bool commit) 6335e03f3aSVlad Yasevich { 6477751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 6527c5f74cSVladimir Oltean bool change; 6677751ee8SNikolay Aleksandrov 672594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) 68907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 69635126b7SVlad Yasevich else 70907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 7177751ee8SNikolay Aleksandrov 7227c5f74cSVladimir Oltean /* check if anything would be changed on commit */ 7327c5f74cSVladimir Oltean change = !!(flags & BRIDGE_VLAN_INFO_PVID) == !!(vg->pvid != v->vid) || 7427c5f74cSVladimir Oltean ((flags ^ v->flags) & BRIDGE_VLAN_INFO_UNTAGGED); 7527c5f74cSVladimir Oltean 7627c5f74cSVladimir Oltean if (!commit) 7727c5f74cSVladimir Oltean goto out; 7827c5f74cSVladimir Oltean 7977751ee8SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_PVID) 8027c5f74cSVladimir Oltean __vlan_add_pvid(vg, v); 812594e906SNikolay Aleksandrov else 8227c5f74cSVladimir Oltean __vlan_delete_pvid(vg, v->vid); 8335e03f3aSVlad Yasevich 8435e03f3aSVlad Yasevich if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 852594e906SNikolay Aleksandrov v->flags |= BRIDGE_VLAN_INFO_UNTAGGED; 86635126b7SVlad Yasevich else 872594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; 88f418af63SNikolay Aleksandrov 8927c5f74cSVladimir Oltean out: 9027c5f74cSVladimir Oltean return change; 9127c5f74cSVladimir Oltean } 9227c5f74cSVladimir Oltean 9327c5f74cSVladimir Oltean static bool __vlan_flags_would_change(struct net_bridge_vlan *v, u16 flags) 9427c5f74cSVladimir Oltean { 9527c5f74cSVladimir Oltean return __vlan_flags_update(v, flags, false); 9627c5f74cSVladimir Oltean } 9727c5f74cSVladimir Oltean 9827c5f74cSVladimir Oltean static void __vlan_flags_commit(struct net_bridge_vlan *v, u16 flags) 9927c5f74cSVladimir Oltean { 10027c5f74cSVladimir Oltean __vlan_flags_update(v, flags, true); 10135e03f3aSVlad Yasevich } 10235e03f3aSVlad Yasevich 1037f109539SScott Feldman static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, 10427973793SIdo Schimmel struct net_bridge_vlan *v, u16 flags, 10527973793SIdo Schimmel struct netlink_ext_ack *extack) 1067f109539SScott Feldman { 1070944d6b5SJiri Pirko int err; 1087f109539SScott Feldman 1090944d6b5SJiri Pirko /* Try switchdev op first. In case it is not supported, fallback to 1100944d6b5SJiri Pirko * 8021q add. 1110944d6b5SJiri Pirko */ 1128d23a54fSVladimir Oltean err = br_switchdev_port_vlan_add(dev, v->vid, flags, false, extack); 1137f109539SScott Feldman if (err == -EOPNOTSUPP) 11427973793SIdo Schimmel return vlan_vid_add(dev, br->vlan_proto, v->vid); 11527973793SIdo Schimmel v->priv_flags |= BR_VLFLAG_ADDED_BY_SWITCHDEV; 1167f109539SScott Feldman return err; 1177f109539SScott Feldman } 1187f109539SScott Feldman 1192594e906SNikolay Aleksandrov static void __vlan_add_list(struct net_bridge_vlan *v) 120243a2e63SVlad Yasevich { 121907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 1222594e906SNikolay Aleksandrov struct list_head *headp, *hpos; 1232594e906SNikolay Aleksandrov struct net_bridge_vlan *vent; 124243a2e63SVlad Yasevich 125907b1e6eSNikolay Aleksandrov if (br_vlan_is_master(v)) 126907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 127907b1e6eSNikolay Aleksandrov else 128907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 129907b1e6eSNikolay Aleksandrov 130907b1e6eSNikolay Aleksandrov headp = &vg->vlan_list; 1312594e906SNikolay Aleksandrov list_for_each_prev(hpos, headp) { 1322594e906SNikolay Aleksandrov vent = list_entry(hpos, struct net_bridge_vlan, vlist); 133040c1257SColin Ian King if (v->vid >= vent->vid) 1342594e906SNikolay Aleksandrov break; 1352594e906SNikolay Aleksandrov } 136586c2b57SNikolay Aleksandrov list_add_rcu(&v->vlist, hpos); 137552406c4SVlad Yasevich } 138243a2e63SVlad Yasevich 1392594e906SNikolay Aleksandrov static void __vlan_del_list(struct net_bridge_vlan *v) 1402594e906SNikolay Aleksandrov { 141586c2b57SNikolay Aleksandrov list_del_rcu(&v->vlist); 142243a2e63SVlad Yasevich } 143243a2e63SVlad Yasevich 144bf361ad3SVivien Didelot static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, 14527973793SIdo Schimmel const struct net_bridge_vlan *v) 1467f109539SScott Feldman { 1470944d6b5SJiri Pirko int err; 1487f109539SScott Feldman 1490944d6b5SJiri Pirko /* Try switchdev op first. In case it is not supported, fallback to 1500944d6b5SJiri Pirko * 8021q del. 1510944d6b5SJiri Pirko */ 15227973793SIdo Schimmel err = br_switchdev_port_vlan_del(dev, v->vid); 15327973793SIdo Schimmel if (!(v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV)) 15427973793SIdo Schimmel vlan_vid_del(dev, br->vlan_proto, v->vid); 15527973793SIdo Schimmel return err == -EOPNOTSUPP ? 0 : err; 1567f109539SScott Feldman } 1577f109539SScott Feldman 1584bbd026cSRandy Dunlap /* Returns a master vlan, if it didn't exist it gets created. In all cases 159f8ed289fSNikolay Aleksandrov * a reference is taken to the master vlan before returning. 160f8ed289fSNikolay Aleksandrov */ 161169327d5SPetr Machata static struct net_bridge_vlan * 162169327d5SPetr Machata br_vlan_get_master(struct net_bridge *br, u16 vid, 163169327d5SPetr Machata struct netlink_ext_ack *extack) 164f8ed289fSNikolay Aleksandrov { 165907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 166f8ed289fSNikolay Aleksandrov struct net_bridge_vlan *masterv; 167f8ed289fSNikolay Aleksandrov 168907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 169907b1e6eSNikolay Aleksandrov masterv = br_vlan_find(vg, vid); 170f8ed289fSNikolay Aleksandrov if (!masterv) { 171f418af63SNikolay Aleksandrov bool changed; 172f418af63SNikolay Aleksandrov 173f8ed289fSNikolay Aleksandrov /* missing global ctx, create it now */ 174169327d5SPetr Machata if (br_vlan_add(br, vid, 0, &changed, extack)) 175f8ed289fSNikolay Aleksandrov return NULL; 176907b1e6eSNikolay Aleksandrov masterv = br_vlan_find(vg, vid); 177f8ed289fSNikolay Aleksandrov if (WARN_ON(!masterv)) 178f8ed289fSNikolay Aleksandrov return NULL; 1790e5a82efSIdo Schimmel refcount_set(&masterv->refcnt, 1); 1800e5a82efSIdo Schimmel return masterv; 181f8ed289fSNikolay Aleksandrov } 18225127759SReshetova, Elena refcount_inc(&masterv->refcnt); 183f8ed289fSNikolay Aleksandrov 184f8ed289fSNikolay Aleksandrov return masterv; 185f8ed289fSNikolay Aleksandrov } 186f8ed289fSNikolay Aleksandrov 1876dada9b1SNikolay Aleksandrov static void br_master_vlan_rcu_free(struct rcu_head *rcu) 1886dada9b1SNikolay Aleksandrov { 1896dada9b1SNikolay Aleksandrov struct net_bridge_vlan *v; 1906dada9b1SNikolay Aleksandrov 1916dada9b1SNikolay Aleksandrov v = container_of(rcu, struct net_bridge_vlan, rcu); 1926dada9b1SNikolay Aleksandrov WARN_ON(!br_vlan_is_master(v)); 1936dada9b1SNikolay Aleksandrov free_percpu(v->stats); 1946dada9b1SNikolay Aleksandrov v->stats = NULL; 1956dada9b1SNikolay Aleksandrov kfree(v); 1966dada9b1SNikolay Aleksandrov } 1976dada9b1SNikolay Aleksandrov 198f8ed289fSNikolay Aleksandrov static void br_vlan_put_master(struct net_bridge_vlan *masterv) 199f8ed289fSNikolay Aleksandrov { 200907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 201907b1e6eSNikolay Aleksandrov 202f8ed289fSNikolay Aleksandrov if (!br_vlan_is_master(masterv)) 203f8ed289fSNikolay Aleksandrov return; 204f8ed289fSNikolay Aleksandrov 205907b1e6eSNikolay Aleksandrov vg = br_vlan_group(masterv->br); 20625127759SReshetova, Elena if (refcount_dec_and_test(&masterv->refcnt)) { 207907b1e6eSNikolay Aleksandrov rhashtable_remove_fast(&vg->vlan_hash, 208f8ed289fSNikolay Aleksandrov &masterv->vnode, br_vlan_rht_params); 209f8ed289fSNikolay Aleksandrov __vlan_del_list(masterv); 2107b54aaafSNikolay Aleksandrov br_multicast_toggle_one_vlan(masterv, false); 211613d61dbSNikolay Aleksandrov br_multicast_ctx_deinit(&masterv->br_mcast_ctx); 2126dada9b1SNikolay Aleksandrov call_rcu(&masterv->rcu, br_master_vlan_rcu_free); 213f8ed289fSNikolay Aleksandrov } 214f8ed289fSNikolay Aleksandrov } 215f8ed289fSNikolay Aleksandrov 2169163a0fcSNikolay Aleksandrov static void nbp_vlan_rcu_free(struct rcu_head *rcu) 2179163a0fcSNikolay Aleksandrov { 2189163a0fcSNikolay Aleksandrov struct net_bridge_vlan *v; 2199163a0fcSNikolay Aleksandrov 2209163a0fcSNikolay Aleksandrov v = container_of(rcu, struct net_bridge_vlan, rcu); 2219163a0fcSNikolay Aleksandrov WARN_ON(br_vlan_is_master(v)); 2229163a0fcSNikolay Aleksandrov /* if we had per-port stats configured then free them here */ 2239d332e69SNikolay Aleksandrov if (v->priv_flags & BR_VLFLAG_PER_PORT_STATS) 2249163a0fcSNikolay Aleksandrov free_percpu(v->stats); 2259163a0fcSNikolay Aleksandrov v->stats = NULL; 2269163a0fcSNikolay Aleksandrov kfree(v); 2279163a0fcSNikolay Aleksandrov } 2289163a0fcSNikolay Aleksandrov 229*ec7328b5STobias Waldekranz static void br_vlan_init_state(struct net_bridge_vlan *v) 230*ec7328b5STobias Waldekranz { 231*ec7328b5STobias Waldekranz struct net_bridge *br; 232*ec7328b5STobias Waldekranz 233*ec7328b5STobias Waldekranz if (br_vlan_is_master(v)) 234*ec7328b5STobias Waldekranz br = v->br; 235*ec7328b5STobias Waldekranz else 236*ec7328b5STobias Waldekranz br = v->port->br; 237*ec7328b5STobias Waldekranz 238*ec7328b5STobias Waldekranz if (br_opt_get(br, BROPT_MST_ENABLED)) { 239*ec7328b5STobias Waldekranz br_mst_vlan_init_state(v); 240*ec7328b5STobias Waldekranz return; 241*ec7328b5STobias Waldekranz } 242*ec7328b5STobias Waldekranz 243*ec7328b5STobias Waldekranz v->state = BR_STATE_FORWARDING; 244*ec7328b5STobias Waldekranz v->msti = 0; 245*ec7328b5STobias Waldekranz } 246*ec7328b5STobias Waldekranz 2472594e906SNikolay Aleksandrov /* This is the shared VLAN add function which works for both ports and bridge 2482594e906SNikolay Aleksandrov * devices. There are four possible calls to this function in terms of the 2492594e906SNikolay Aleksandrov * vlan entry type: 2502594e906SNikolay Aleksandrov * 1. vlan is being added on a port (no master flags, global entry exists) 251ddd611d3SIdo Schimmel * 2. vlan is being added on a bridge (both master and brentry flags) 2522594e906SNikolay Aleksandrov * 3. vlan is being added on a port, but a global entry didn't exist which 253ddd611d3SIdo Schimmel * is being created right now (master flag set, brentry flag unset), the 2542594e906SNikolay Aleksandrov * global entry is used for global per-vlan features, but not for filtering 255ddd611d3SIdo Schimmel * 4. same as 3 but with both master and brentry flags set so the entry 2562594e906SNikolay Aleksandrov * will be used for filtering in both the port and the bridge 2572594e906SNikolay Aleksandrov */ 258169327d5SPetr Machata static int __vlan_add(struct net_bridge_vlan *v, u16 flags, 259169327d5SPetr Machata struct netlink_ext_ack *extack) 260243a2e63SVlad Yasevich { 2612594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = NULL; 2622594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2636be144f6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2642594e906SNikolay Aleksandrov struct net_device *dev; 2652594e906SNikolay Aleksandrov struct net_bridge *br; 266bf361ad3SVivien Didelot int err; 267bf361ad3SVivien Didelot 2682594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 2692594e906SNikolay Aleksandrov br = v->br; 2702594e906SNikolay Aleksandrov dev = br->dev; 271907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 2722594e906SNikolay Aleksandrov } else { 2732594e906SNikolay Aleksandrov p = v->port; 2742594e906SNikolay Aleksandrov br = p->br; 2752594e906SNikolay Aleksandrov dev = p->dev; 276907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 2772594e906SNikolay Aleksandrov } 2782594e906SNikolay Aleksandrov 2792594e906SNikolay Aleksandrov if (p) { 2802594e906SNikolay Aleksandrov /* Add VLAN to the device filter if it is supported. 2812594e906SNikolay Aleksandrov * This ensures tagged traffic enters the bridge when 2822594e906SNikolay Aleksandrov * promiscuous mode is disabled by br_manage_promisc(). 2832594e906SNikolay Aleksandrov */ 28427973793SIdo Schimmel err = __vlan_vid_add(dev, br, v, flags, extack); 285bf361ad3SVivien Didelot if (err) 2862594e906SNikolay Aleksandrov goto out; 2872594e906SNikolay Aleksandrov 2882594e906SNikolay Aleksandrov /* need to work on the master vlan too */ 2892594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_MASTER) { 290f418af63SNikolay Aleksandrov bool changed; 291f418af63SNikolay Aleksandrov 292f418af63SNikolay Aleksandrov err = br_vlan_add(br, v->vid, 293f418af63SNikolay Aleksandrov flags | BRIDGE_VLAN_INFO_BRENTRY, 294169327d5SPetr Machata &changed, extack); 2952594e906SNikolay Aleksandrov if (err) 2962594e906SNikolay Aleksandrov goto out_filt; 297f545923bSNikolay Aleksandrov 298f545923bSNikolay Aleksandrov if (changed) 299f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, v->vid, 0, 300f545923bSNikolay Aleksandrov RTM_NEWVLAN); 3012594e906SNikolay Aleksandrov } 3022594e906SNikolay Aleksandrov 303169327d5SPetr Machata masterv = br_vlan_get_master(br, v->vid, extack); 304ee4f52a8SZhang Changzhong if (!masterv) { 305ee4f52a8SZhang Changzhong err = -ENOMEM; 3062594e906SNikolay Aleksandrov goto out_filt; 307ee4f52a8SZhang Changzhong } 3082594e906SNikolay Aleksandrov v->brvlan = masterv; 3099163a0fcSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)) { 310281cc284SHeiner Kallweit v->stats = 311281cc284SHeiner Kallweit netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 3129163a0fcSNikolay Aleksandrov if (!v->stats) { 3139163a0fcSNikolay Aleksandrov err = -ENOMEM; 3149163a0fcSNikolay Aleksandrov goto out_filt; 3159163a0fcSNikolay Aleksandrov } 3169d332e69SNikolay Aleksandrov v->priv_flags |= BR_VLFLAG_PER_PORT_STATS; 3179163a0fcSNikolay Aleksandrov } else { 3186dada9b1SNikolay Aleksandrov v->stats = masterv->stats; 3199163a0fcSNikolay Aleksandrov } 320613d61dbSNikolay Aleksandrov br_multicast_port_ctx_init(p, v, &v->port_mcast_ctx); 3219c86ce2cSPetr Machata } else { 3223116ad06SVladimir Oltean if (br_vlan_should_use(v)) { 3233116ad06SVladimir Oltean err = br_switchdev_port_vlan_add(dev, v->vid, flags, 3248d23a54fSVladimir Oltean false, extack); 3259c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 3269c86ce2cSPetr Machata goto out; 3273116ad06SVladimir Oltean } 328613d61dbSNikolay Aleksandrov br_multicast_ctx_init(br, v, &v->br_mcast_ctx); 3297b54aaafSNikolay Aleksandrov v->priv_flags |= BR_VLFLAG_GLOBAL_MCAST_ENABLED; 3302594e906SNikolay Aleksandrov } 3312594e906SNikolay Aleksandrov 3326be144f6SNikolay Aleksandrov /* Add the dev mac and count the vlan only if it's usable */ 3332594e906SNikolay Aleksandrov if (br_vlan_should_use(v)) { 334f6814fdcSVladimir Oltean err = br_fdb_add_local(br, p, dev->dev_addr, v->vid); 3352594e906SNikolay Aleksandrov if (err) { 3362594e906SNikolay Aleksandrov br_err(br, "failed insert local address into bridge forwarding table\n"); 3372594e906SNikolay Aleksandrov goto out_filt; 3382594e906SNikolay Aleksandrov } 3396be144f6SNikolay Aleksandrov vg->num_vlans++; 3402594e906SNikolay Aleksandrov } 3412594e906SNikolay Aleksandrov 342a580c76dSNikolay Aleksandrov /* set the state before publishing */ 343*ec7328b5STobias Waldekranz br_vlan_init_state(v); 344a580c76dSNikolay Aleksandrov 3456be144f6SNikolay Aleksandrov err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode, 3466be144f6SNikolay Aleksandrov br_vlan_rht_params); 3472594e906SNikolay Aleksandrov if (err) 3482594e906SNikolay Aleksandrov goto out_fdb_insert; 3492594e906SNikolay Aleksandrov 3502594e906SNikolay Aleksandrov __vlan_add_list(v); 35127c5f74cSVladimir Oltean __vlan_flags_commit(v, flags); 3527b54aaafSNikolay Aleksandrov br_multicast_toggle_one_vlan(v, true); 35380900acdSMike Manning 35480900acdSMike Manning if (p) 35580900acdSMike Manning nbp_vlan_set_vlan_dev_state(p, v->vid); 3562594e906SNikolay Aleksandrov out: 3572594e906SNikolay Aleksandrov return err; 3582594e906SNikolay Aleksandrov 3592594e906SNikolay Aleksandrov out_fdb_insert: 3606be144f6SNikolay Aleksandrov if (br_vlan_should_use(v)) { 3616be144f6SNikolay Aleksandrov br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid); 3626be144f6SNikolay Aleksandrov vg->num_vlans--; 3636be144f6SNikolay Aleksandrov } 3642594e906SNikolay Aleksandrov 3652594e906SNikolay Aleksandrov out_filt: 3662594e906SNikolay Aleksandrov if (p) { 36727973793SIdo Schimmel __vlan_vid_del(dev, br, v); 3682594e906SNikolay Aleksandrov if (masterv) { 3691a3aea25SLi RongQing if (v->stats && masterv->stats != v->stats) 3701a3aea25SLi RongQing free_percpu(v->stats); 3711a3aea25SLi RongQing v->stats = NULL; 3721a3aea25SLi RongQing 373f8ed289fSNikolay Aleksandrov br_vlan_put_master(masterv); 3742594e906SNikolay Aleksandrov v->brvlan = NULL; 3752594e906SNikolay Aleksandrov } 3769c86ce2cSPetr Machata } else { 3779c86ce2cSPetr Machata br_switchdev_port_vlan_del(dev, v->vid); 3782594e906SNikolay Aleksandrov } 3792594e906SNikolay Aleksandrov 3802594e906SNikolay Aleksandrov goto out; 3812594e906SNikolay Aleksandrov } 3822594e906SNikolay Aleksandrov 3832594e906SNikolay Aleksandrov static int __vlan_del(struct net_bridge_vlan *v) 3842594e906SNikolay Aleksandrov { 3852594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = v; 38677751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 3872594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 3882594e906SNikolay Aleksandrov int err = 0; 3892594e906SNikolay Aleksandrov 3902594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 391907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 3922594e906SNikolay Aleksandrov } else { 3932594e906SNikolay Aleksandrov p = v->port; 394907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 3952594e906SNikolay Aleksandrov masterv = v->brvlan; 3962594e906SNikolay Aleksandrov } 3972594e906SNikolay Aleksandrov 39877751ee8SNikolay Aleksandrov __vlan_delete_pvid(vg, v->vid); 3992594e906SNikolay Aleksandrov if (p) { 40027973793SIdo Schimmel err = __vlan_vid_del(p->dev, p->br, v); 4012594e906SNikolay Aleksandrov if (err) 4022594e906SNikolay Aleksandrov goto out; 4039c86ce2cSPetr Machata } else { 4049c86ce2cSPetr Machata err = br_switchdev_port_vlan_del(v->br->dev, v->vid); 4059c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 4069c86ce2cSPetr Machata goto out; 4079c86ce2cSPetr Machata err = 0; 4082594e906SNikolay Aleksandrov } 4092594e906SNikolay Aleksandrov 4106be144f6SNikolay Aleksandrov if (br_vlan_should_use(v)) { 4112594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; 4126be144f6SNikolay Aleksandrov vg->num_vlans--; 4132594e906SNikolay Aleksandrov } 4142594e906SNikolay Aleksandrov 4152594e906SNikolay Aleksandrov if (masterv != v) { 416efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 41777751ee8SNikolay Aleksandrov rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, 41877751ee8SNikolay Aleksandrov br_vlan_rht_params); 4192594e906SNikolay Aleksandrov __vlan_del_list(v); 42080900acdSMike Manning nbp_vlan_set_vlan_dev_state(p, v->vid); 4217b54aaafSNikolay Aleksandrov br_multicast_toggle_one_vlan(v, false); 422613d61dbSNikolay Aleksandrov br_multicast_port_ctx_deinit(&v->port_mcast_ctx); 4239163a0fcSNikolay Aleksandrov call_rcu(&v->rcu, nbp_vlan_rcu_free); 4242594e906SNikolay Aleksandrov } 4252594e906SNikolay Aleksandrov 426f8ed289fSNikolay Aleksandrov br_vlan_put_master(masterv); 4272594e906SNikolay Aleksandrov out: 428bf361ad3SVivien Didelot return err; 4298580e211SToshiaki Makita } 430243a2e63SVlad Yasevich 431f409d0edSNikolay Aleksandrov static void __vlan_group_free(struct net_bridge_vlan_group *vg) 432f409d0edSNikolay Aleksandrov { 433f409d0edSNikolay Aleksandrov WARN_ON(!list_empty(&vg->vlan_list)); 434f409d0edSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 435efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 436f409d0edSNikolay Aleksandrov kfree(vg); 437f409d0edSNikolay Aleksandrov } 438f409d0edSNikolay Aleksandrov 439f545923bSNikolay Aleksandrov static void __vlan_flush(const struct net_bridge *br, 440f545923bSNikolay Aleksandrov const struct net_bridge_port *p, 441f545923bSNikolay Aleksandrov struct net_bridge_vlan_group *vg) 442243a2e63SVlad Yasevich { 4432594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan, *tmp; 444f545923bSNikolay Aleksandrov u16 v_start = 0, v_end = 0; 4455454f5c2SVladimir Oltean int err; 4462594e906SNikolay Aleksandrov 447f409d0edSNikolay Aleksandrov __vlan_delete_pvid(vg, vg->pvid); 448f545923bSNikolay Aleksandrov list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) { 449f545923bSNikolay Aleksandrov /* take care of disjoint ranges */ 450f545923bSNikolay Aleksandrov if (!v_start) { 451f545923bSNikolay Aleksandrov v_start = vlan->vid; 452f545923bSNikolay Aleksandrov } else if (vlan->vid - v_end != 1) { 453f545923bSNikolay Aleksandrov /* found range end, notify and start next one */ 454f545923bSNikolay Aleksandrov br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN); 455f545923bSNikolay Aleksandrov v_start = vlan->vid; 456f545923bSNikolay Aleksandrov } 457f545923bSNikolay Aleksandrov v_end = vlan->vid; 458f545923bSNikolay Aleksandrov 4595454f5c2SVladimir Oltean err = __vlan_del(vlan); 4605454f5c2SVladimir Oltean if (err) { 4615454f5c2SVladimir Oltean br_err(br, 4625454f5c2SVladimir Oltean "port %u(%s) failed to delete vlan %d: %pe\n", 4635454f5c2SVladimir Oltean (unsigned int) p->port_no, p->dev->name, 4645454f5c2SVladimir Oltean vlan->vid, ERR_PTR(err)); 4655454f5c2SVladimir Oltean } 466243a2e63SVlad Yasevich } 467243a2e63SVlad Yasevich 468f545923bSNikolay Aleksandrov /* notify about the last/whole vlan range */ 469f545923bSNikolay Aleksandrov if (v_start) 470f545923bSNikolay Aleksandrov br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN); 471f545923bSNikolay Aleksandrov } 472f545923bSNikolay Aleksandrov 47378851988SVlad Yasevich struct sk_buff *br_handle_vlan(struct net_bridge *br, 47411538d03SRoopa Prabhu const struct net_bridge_port *p, 4752594e906SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 476a37b85c9SVlad Yasevich struct sk_buff *skb) 477a37b85c9SVlad Yasevich { 478281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats; 4792594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 480a37b85c9SVlad Yasevich u16 vid; 481a37b85c9SVlad Yasevich 48220adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 48320adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 48478851988SVlad Yasevich goto out; 48578851988SVlad Yasevich 4862594e906SNikolay Aleksandrov /* At this point, we know that the frame was filtered and contains 4872594e906SNikolay Aleksandrov * a valid vlan id. If the vlan id has untagged flag set, 4882594e906SNikolay Aleksandrov * send untagged; otherwise, send tagged. 4892594e906SNikolay Aleksandrov */ 4902594e906SNikolay Aleksandrov br_vlan_get_tag(skb, &vid); 4912594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 4922594e906SNikolay Aleksandrov /* Vlan entry must be configured at this point. The 493fc92f745SVlad Yasevich * only exception is the bridge is set in promisc mode and the 494fc92f745SVlad Yasevich * packet is destined for the bridge device. In this case 495fc92f745SVlad Yasevich * pass the packet as is. 496fc92f745SVlad Yasevich */ 4972594e906SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) { 498fc92f745SVlad Yasevich if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { 499fc92f745SVlad Yasevich goto out; 500fc92f745SVlad Yasevich } else { 501fc92f745SVlad Yasevich kfree_skb(skb); 502fc92f745SVlad Yasevich return NULL; 503fc92f745SVlad Yasevich } 504fc92f745SVlad Yasevich } 505ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 5066dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 5076dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 5086dada9b1SNikolay Aleksandrov stats->tx_bytes += skb->len; 5096dada9b1SNikolay Aleksandrov stats->tx_packets++; 5106dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 5116dada9b1SNikolay Aleksandrov } 5126dada9b1SNikolay Aleksandrov 51347211192STobias Waldekranz /* If the skb will be sent using forwarding offload, the assumption is 51447211192STobias Waldekranz * that the switchdev will inject the packet into hardware together 51547211192STobias Waldekranz * with the bridge VLAN, so that it can be forwarded according to that 51647211192STobias Waldekranz * VLAN. The switchdev should deal with popping the VLAN header in 51747211192STobias Waldekranz * hardware on each egress port as appropriate. So only strip the VLAN 51847211192STobias Waldekranz * header if forwarding offload is not being used. 51947211192STobias Waldekranz */ 52047211192STobias Waldekranz if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED && 52147211192STobias Waldekranz !br_switchdev_frame_uses_tx_fwd_offload(skb)) 5225978f8a9SMichał Mirosław __vlan_hwaccel_clear_tag(skb); 52311538d03SRoopa Prabhu 52411538d03SRoopa Prabhu if (p && (p->flags & BR_VLAN_TUNNEL) && 52511538d03SRoopa Prabhu br_handle_egress_vlan_tunnel(skb, v)) { 52611538d03SRoopa Prabhu kfree_skb(skb); 52711538d03SRoopa Prabhu return NULL; 52811538d03SRoopa Prabhu } 52978851988SVlad Yasevich out: 53078851988SVlad Yasevich return skb; 53178851988SVlad Yasevich } 53278851988SVlad Yasevich 53378851988SVlad Yasevich /* Called under RCU */ 5346dada9b1SNikolay Aleksandrov static bool __allowed_ingress(const struct net_bridge *br, 5356dada9b1SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 536a580c76dSNikolay Aleksandrov struct sk_buff *skb, u16 *vid, 537f4b7002aSNikolay Aleksandrov u8 *state, 538f4b7002aSNikolay Aleksandrov struct net_bridge_vlan **vlan) 53978851988SVlad Yasevich { 540281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats; 5416dada9b1SNikolay Aleksandrov struct net_bridge_vlan *v; 5428580e211SToshiaki Makita bool tagged; 543a37b85c9SVlad Yasevich 54420adfa1aSVlad Yasevich BR_INPUT_SKB_CB(skb)->vlan_filtered = true; 54512464bb8SToshiaki Makita /* If vlan tx offload is disabled on bridge device and frame was 54612464bb8SToshiaki Makita * sent from vlan device on the bridge device, it does not have 54712464bb8SToshiaki Makita * HW accelerated vlan tag. 54812464bb8SToshiaki Makita */ 549df8a39deSJiri Pirko if (unlikely(!skb_vlan_tag_present(skb) && 5506dada9b1SNikolay Aleksandrov skb->protocol == br->vlan_proto)) { 5510d5501c1SVlad Yasevich skb = skb_vlan_untag(skb); 55212464bb8SToshiaki Makita if (unlikely(!skb)) 55312464bb8SToshiaki Makita return false; 55412464bb8SToshiaki Makita } 55512464bb8SToshiaki Makita 5568580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid)) { 5578580e211SToshiaki Makita /* Tagged frame */ 5586dada9b1SNikolay Aleksandrov if (skb->vlan_proto != br->vlan_proto) { 5598580e211SToshiaki Makita /* Protocol-mismatch, empty out vlan_tci for new tag */ 5608580e211SToshiaki Makita skb_push(skb, ETH_HLEN); 56162749e2cSJiri Pirko skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, 562df8a39deSJiri Pirko skb_vlan_tag_get(skb)); 5638580e211SToshiaki Makita if (unlikely(!skb)) 5648580e211SToshiaki Makita return false; 5658580e211SToshiaki Makita 5668580e211SToshiaki Makita skb_pull(skb, ETH_HLEN); 5678580e211SToshiaki Makita skb_reset_mac_len(skb); 5688580e211SToshiaki Makita *vid = 0; 5698580e211SToshiaki Makita tagged = false; 5708580e211SToshiaki Makita } else { 5718580e211SToshiaki Makita tagged = true; 5728580e211SToshiaki Makita } 5738580e211SToshiaki Makita } else { 5748580e211SToshiaki Makita /* Untagged frame */ 5758580e211SToshiaki Makita tagged = false; 5768580e211SToshiaki Makita } 5778580e211SToshiaki Makita 578b90356ceSToshiaki Makita if (!*vid) { 57977751ee8SNikolay Aleksandrov u16 pvid = br_get_pvid(vg); 58077751ee8SNikolay Aleksandrov 581b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 582b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 583b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 58478851988SVlad Yasevich */ 5853df6bf45SVlad Yasevich if (!pvid) 586eb707618SToshiaki Makita goto drop; 58778851988SVlad Yasevich 588b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 589b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 59078851988SVlad Yasevich */ 591dfb5fa32SToshiaki Makita *vid = pvid; 5928580e211SToshiaki Makita if (likely(!tagged)) 593b90356ceSToshiaki Makita /* Untagged Frame. */ 5946dada9b1SNikolay Aleksandrov __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); 595b90356ceSToshiaki Makita else 596b90356ceSToshiaki Makita /* Priority-tagged Frame. 5975978f8a9SMichał Mirosław * At this point, we know that skb->vlan_tci VID 5985978f8a9SMichał Mirosław * field was 0. 599b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 600b90356ceSToshiaki Makita */ 601b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 602b90356ceSToshiaki Makita 603f4b7002aSNikolay Aleksandrov /* if snooping and stats are disabled we can avoid the lookup */ 604f4b7002aSNikolay Aleksandrov if (!br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) && 605f4b7002aSNikolay Aleksandrov !br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 606a580c76dSNikolay Aleksandrov if (*state == BR_STATE_FORWARDING) { 607a580c76dSNikolay Aleksandrov *state = br_vlan_get_pvid_state(vg); 608fd20d973STim Yi if (!br_vlan_state_allowed(*state, true)) 609fd20d973STim Yi goto drop; 61078851988SVlad Yasevich } 611fd20d973STim Yi return true; 612a580c76dSNikolay Aleksandrov } 613a580c76dSNikolay Aleksandrov } 61477751ee8SNikolay Aleksandrov v = br_vlan_find(vg, *vid); 6156dada9b1SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 6166dada9b1SNikolay Aleksandrov goto drop; 6176dada9b1SNikolay Aleksandrov 618a580c76dSNikolay Aleksandrov if (*state == BR_STATE_FORWARDING) { 619a580c76dSNikolay Aleksandrov *state = br_vlan_get_state(v); 620a580c76dSNikolay Aleksandrov if (!br_vlan_state_allowed(*state, true)) 621a580c76dSNikolay Aleksandrov goto drop; 622a580c76dSNikolay Aleksandrov } 623a580c76dSNikolay Aleksandrov 624ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 6256dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 6266dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 6276dada9b1SNikolay Aleksandrov stats->rx_bytes += skb->len; 6286dada9b1SNikolay Aleksandrov stats->rx_packets++; 6296dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 6306dada9b1SNikolay Aleksandrov } 6316dada9b1SNikolay Aleksandrov 632f4b7002aSNikolay Aleksandrov *vlan = v; 633f4b7002aSNikolay Aleksandrov 634a37b85c9SVlad Yasevich return true; 6356dada9b1SNikolay Aleksandrov 636eb707618SToshiaki Makita drop: 637eb707618SToshiaki Makita kfree_skb(skb); 638a37b85c9SVlad Yasevich return false; 639a37b85c9SVlad Yasevich } 640a37b85c9SVlad Yasevich 64177751ee8SNikolay Aleksandrov bool br_allowed_ingress(const struct net_bridge *br, 64277751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg, struct sk_buff *skb, 643f4b7002aSNikolay Aleksandrov u16 *vid, u8 *state, 644f4b7002aSNikolay Aleksandrov struct net_bridge_vlan **vlan) 6452594e906SNikolay Aleksandrov { 6462594e906SNikolay Aleksandrov /* If VLAN filtering is disabled on the bridge, all packets are 6472594e906SNikolay Aleksandrov * permitted. 6482594e906SNikolay Aleksandrov */ 649f4b7002aSNikolay Aleksandrov *vlan = NULL; 650ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) { 6512594e906SNikolay Aleksandrov BR_INPUT_SKB_CB(skb)->vlan_filtered = false; 6522594e906SNikolay Aleksandrov return true; 6532594e906SNikolay Aleksandrov } 6542594e906SNikolay Aleksandrov 655f4b7002aSNikolay Aleksandrov return __allowed_ingress(br, vg, skb, vid, state, vlan); 6562594e906SNikolay Aleksandrov } 6572594e906SNikolay Aleksandrov 65885f46c6bSVlad Yasevich /* Called under RCU. */ 6592594e906SNikolay Aleksandrov bool br_allowed_egress(struct net_bridge_vlan_group *vg, 66085f46c6bSVlad Yasevich const struct sk_buff *skb) 66185f46c6bSVlad Yasevich { 6622594e906SNikolay Aleksandrov const struct net_bridge_vlan *v; 66385f46c6bSVlad Yasevich u16 vid; 66485f46c6bSVlad Yasevich 66520adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 66620adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 66785f46c6bSVlad Yasevich return true; 66885f46c6bSVlad Yasevich 66985f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 6702594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 671a580c76dSNikolay Aleksandrov if (v && br_vlan_should_use(v) && 672a580c76dSNikolay Aleksandrov br_vlan_state_allowed(br_vlan_get_state(v), false)) 67385f46c6bSVlad Yasevich return true; 67485f46c6bSVlad Yasevich 67585f46c6bSVlad Yasevich return false; 67685f46c6bSVlad Yasevich } 67785f46c6bSVlad Yasevich 678e0d7968aSToshiaki Makita /* Called under RCU */ 679e0d7968aSToshiaki Makita bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) 680e0d7968aSToshiaki Makita { 681468e7944SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 682e0d7968aSToshiaki Makita struct net_bridge *br = p->br; 683a580c76dSNikolay Aleksandrov struct net_bridge_vlan *v; 684e0d7968aSToshiaki Makita 68520adfa1aSVlad Yasevich /* If filtering was disabled at input, let it pass. */ 686ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 687e0d7968aSToshiaki Makita return true; 688e0d7968aSToshiaki Makita 689eca1e006SIdo Schimmel vg = nbp_vlan_group_rcu(p); 690468e7944SNikolay Aleksandrov if (!vg || !vg->num_vlans) 691e0d7968aSToshiaki Makita return false; 692e0d7968aSToshiaki Makita 6938580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) 6948580e211SToshiaki Makita *vid = 0; 6958580e211SToshiaki Makita 696e0d7968aSToshiaki Makita if (!*vid) { 69777751ee8SNikolay Aleksandrov *vid = br_get_pvid(vg); 698a580c76dSNikolay Aleksandrov if (!*vid || 699a580c76dSNikolay Aleksandrov !br_vlan_state_allowed(br_vlan_get_pvid_state(vg), true)) 700e0d7968aSToshiaki Makita return false; 701e0d7968aSToshiaki Makita 702e0d7968aSToshiaki Makita return true; 703e0d7968aSToshiaki Makita } 704e0d7968aSToshiaki Makita 705a580c76dSNikolay Aleksandrov v = br_vlan_find(vg, *vid); 706a580c76dSNikolay Aleksandrov if (v && br_vlan_state_allowed(br_vlan_get_state(v), true)) 707e0d7968aSToshiaki Makita return true; 708e0d7968aSToshiaki Makita 709e0d7968aSToshiaki Makita return false; 710e0d7968aSToshiaki Makita } 711e0d7968aSToshiaki Makita 712dbd6dc75SPetr Machata static int br_vlan_add_existing(struct net_bridge *br, 713dbd6dc75SPetr Machata struct net_bridge_vlan_group *vg, 714dbd6dc75SPetr Machata struct net_bridge_vlan *vlan, 715169327d5SPetr Machata u16 flags, bool *changed, 716169327d5SPetr Machata struct netlink_ext_ack *extack) 717dbd6dc75SPetr Machata { 71827c5f74cSVladimir Oltean bool would_change = __vlan_flags_would_change(vlan, flags); 71927c5f74cSVladimir Oltean bool becomes_brentry = false; 720dbd6dc75SPetr Machata int err; 721dbd6dc75SPetr Machata 72227c5f74cSVladimir Oltean if (!br_vlan_is_brentry(vlan)) { 723b2bc58d4SVladimir Oltean /* Trying to change flags of non-existent bridge vlan */ 72427c5f74cSVladimir Oltean if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) 725b2bc58d4SVladimir Oltean return -EINVAL; 726b2bc58d4SVladimir Oltean 72727c5f74cSVladimir Oltean becomes_brentry = true; 72827c5f74cSVladimir Oltean } 72927c5f74cSVladimir Oltean 73027c5f74cSVladimir Oltean /* Master VLANs that aren't brentries weren't notified before, 73127c5f74cSVladimir Oltean * time to notify them now. 73227c5f74cSVladimir Oltean */ 73327c5f74cSVladimir Oltean if (becomes_brentry || would_change) { 73427c5f74cSVladimir Oltean err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags, 7358d23a54fSVladimir Oltean would_change, extack); 7369c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 7379c86ce2cSPetr Machata return err; 73827c5f74cSVladimir Oltean } 7399c86ce2cSPetr Machata 74027c5f74cSVladimir Oltean if (becomes_brentry) { 741dbd6dc75SPetr Machata /* It was only kept for port vlans, now make it real */ 742f6814fdcSVladimir Oltean err = br_fdb_add_local(br, NULL, br->dev->dev_addr, vlan->vid); 743dbd6dc75SPetr Machata if (err) { 744dbd6dc75SPetr Machata br_err(br, "failed to insert local address into bridge forwarding table\n"); 7459c86ce2cSPetr Machata goto err_fdb_insert; 746dbd6dc75SPetr Machata } 747dbd6dc75SPetr Machata 748dbd6dc75SPetr Machata refcount_inc(&vlan->refcnt); 749dbd6dc75SPetr Machata vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; 750dbd6dc75SPetr Machata vg->num_vlans++; 751dbd6dc75SPetr Machata *changed = true; 752b92dace3SNikolay Aleksandrov br_multicast_toggle_one_vlan(vlan, true); 753dbd6dc75SPetr Machata } 754dbd6dc75SPetr Machata 75527c5f74cSVladimir Oltean __vlan_flags_commit(vlan, flags); 75627c5f74cSVladimir Oltean if (would_change) 757dbd6dc75SPetr Machata *changed = true; 758dbd6dc75SPetr Machata 759dbd6dc75SPetr Machata return 0; 7609c86ce2cSPetr Machata 7619c86ce2cSPetr Machata err_fdb_insert: 7629c86ce2cSPetr Machata br_switchdev_port_vlan_del(br->dev, vlan->vid); 7639c86ce2cSPetr Machata return err; 764dbd6dc75SPetr Machata } 765dbd6dc75SPetr Machata 7668adff41cSToshiaki Makita /* Must be protected by RTNL. 7678adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 768f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 7698adff41cSToshiaki Makita */ 770169327d5SPetr Machata int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed, 771169327d5SPetr Machata struct netlink_ext_ack *extack) 772243a2e63SVlad Yasevich { 773907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 7742594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 7752594e906SNikolay Aleksandrov int ret; 776243a2e63SVlad Yasevich 777243a2e63SVlad Yasevich ASSERT_RTNL(); 778243a2e63SVlad Yasevich 779f418af63SNikolay Aleksandrov *changed = false; 780907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 781907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(vg, vid); 782dbd6dc75SPetr Machata if (vlan) 783169327d5SPetr Machata return br_vlan_add_existing(br, vg, vlan, flags, changed, 784169327d5SPetr Machata extack); 785243a2e63SVlad Yasevich 7862594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 7872594e906SNikolay Aleksandrov if (!vlan) 788243a2e63SVlad Yasevich return -ENOMEM; 789243a2e63SVlad Yasevich 790281cc284SHeiner Kallweit vlan->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 7916dada9b1SNikolay Aleksandrov if (!vlan->stats) { 7926dada9b1SNikolay Aleksandrov kfree(vlan); 7936dada9b1SNikolay Aleksandrov return -ENOMEM; 7946dada9b1SNikolay Aleksandrov } 7952594e906SNikolay Aleksandrov vlan->vid = vid; 7962594e906SNikolay Aleksandrov vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; 7972594e906SNikolay Aleksandrov vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; 7982594e906SNikolay Aleksandrov vlan->br = br; 7992594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_BRENTRY) 80025127759SReshetova, Elena refcount_set(&vlan->refcnt, 1); 801169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 8026dada9b1SNikolay Aleksandrov if (ret) { 8036dada9b1SNikolay Aleksandrov free_percpu(vlan->stats); 8042594e906SNikolay Aleksandrov kfree(vlan); 805f418af63SNikolay Aleksandrov } else { 806f418af63SNikolay Aleksandrov *changed = true; 8076dada9b1SNikolay Aleksandrov } 808243a2e63SVlad Yasevich 8092594e906SNikolay Aleksandrov return ret; 810243a2e63SVlad Yasevich } 811243a2e63SVlad Yasevich 8128adff41cSToshiaki Makita /* Must be protected by RTNL. 8138adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 8148adff41cSToshiaki Makita */ 815243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 816243a2e63SVlad Yasevich { 817907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 8182594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 819243a2e63SVlad Yasevich 820243a2e63SVlad Yasevich ASSERT_RTNL(); 821243a2e63SVlad Yasevich 822907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 823907b1e6eSNikolay Aleksandrov v = br_vlan_find(vg, vid); 8242594e906SNikolay Aleksandrov if (!v || !br_vlan_is_brentry(v)) 8252594e906SNikolay Aleksandrov return -ENOENT; 826243a2e63SVlad Yasevich 827424bb9c9SToshiaki Makita br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); 8283741873bSRoopa Prabhu br_fdb_delete_by_port(br, NULL, vid, 0); 829bc9a25d2SVlad Yasevich 830efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 831efa5356bSRoopa Prabhu 8322594e906SNikolay Aleksandrov return __vlan_del(v); 833243a2e63SVlad Yasevich } 834243a2e63SVlad Yasevich 835243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 836243a2e63SVlad Yasevich { 837f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 838f409d0edSNikolay Aleksandrov 839243a2e63SVlad Yasevich ASSERT_RTNL(); 840243a2e63SVlad Yasevich 841f409d0edSNikolay Aleksandrov vg = br_vlan_group(br); 842f545923bSNikolay Aleksandrov __vlan_flush(br, NULL, vg); 843f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(br->vlgrp, NULL); 844f409d0edSNikolay Aleksandrov synchronize_rcu(); 845f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 846243a2e63SVlad Yasevich } 847243a2e63SVlad Yasevich 8482594e906SNikolay Aleksandrov struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) 8492b292fb4SToshiaki Makita { 8502594e906SNikolay Aleksandrov if (!vg) 8512594e906SNikolay Aleksandrov return NULL; 8522b292fb4SToshiaki Makita 8532594e906SNikolay Aleksandrov return br_vlan_lookup(&vg->vlan_hash, vid); 8542b292fb4SToshiaki Makita } 8552b292fb4SToshiaki Makita 856204177f3SToshiaki Makita /* Must be protected by RTNL. */ 857204177f3SToshiaki Makita static void recalculate_group_addr(struct net_bridge *br) 858204177f3SToshiaki Makita { 859be3664a0SNikolay Aleksandrov if (br_opt_get(br, BROPT_GROUP_ADDR_SET)) 860204177f3SToshiaki Makita return; 861204177f3SToshiaki Makita 862204177f3SToshiaki Makita spin_lock_bh(&br->lock); 863ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 864ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) { 865204177f3SToshiaki Makita /* Bridge Group Address */ 866204177f3SToshiaki Makita br->group_addr[5] = 0x00; 867204177f3SToshiaki Makita } else { /* vlan_enabled && ETH_P_8021AD */ 868204177f3SToshiaki Makita /* Provider Bridge Group Address */ 869204177f3SToshiaki Makita br->group_addr[5] = 0x08; 870204177f3SToshiaki Makita } 871204177f3SToshiaki Makita spin_unlock_bh(&br->lock); 872204177f3SToshiaki Makita } 873204177f3SToshiaki Makita 874204177f3SToshiaki Makita /* Must be protected by RTNL. */ 875204177f3SToshiaki Makita void br_recalculate_fwd_mask(struct net_bridge *br) 876204177f3SToshiaki Makita { 877ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 878ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) 879204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; 880204177f3SToshiaki Makita else /* vlan_enabled && ETH_P_8021AD */ 881204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_8021AD & 882204177f3SToshiaki Makita ~(1u << br->group_addr[5]); 883204177f3SToshiaki Makita } 884204177f3SToshiaki Makita 8859e781401SVladimir Oltean int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, 8869e781401SVladimir Oltean struct netlink_ext_ack *extack) 887243a2e63SVlad Yasevich { 8886b72a770SElad Raz struct switchdev_attr attr = { 8896b72a770SElad Raz .orig_dev = br->dev, 8906b72a770SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 8916b72a770SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 8926b72a770SElad Raz .u.vlan_filtering = val, 8936b72a770SElad Raz }; 8946b72a770SElad Raz int err; 8956b72a770SElad Raz 896ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED) == !!val) 897a7854037SNikolay Aleksandrov return 0; 898243a2e63SVlad Yasevich 899ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_ENABLED, !!val); 900f7cdb3ecSVladimir Oltean 901f7cdb3ecSVladimir Oltean err = switchdev_port_attr_set(br->dev, &attr, extack); 902f7cdb3ecSVladimir Oltean if (err && err != -EOPNOTSUPP) { 903f7cdb3ecSVladimir Oltean br_opt_toggle(br, BROPT_VLAN_ENABLED, !val); 904f7cdb3ecSVladimir Oltean return err; 905f7cdb3ecSVladimir Oltean } 906f7cdb3ecSVladimir Oltean 9072796d0c6SVlad Yasevich br_manage_promisc(br); 908204177f3SToshiaki Makita recalculate_group_addr(br); 909204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 910f4b7002aSNikolay Aleksandrov if (!val && br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED)) { 911f4b7002aSNikolay Aleksandrov br_info(br, "vlan filtering disabled, automatically disabling multicast vlan snooping\n"); 912f4b7002aSNikolay Aleksandrov br_multicast_toggle_vlan_snooping(br, false, NULL); 913f4b7002aSNikolay Aleksandrov } 914243a2e63SVlad Yasevich 915a7854037SNikolay Aleksandrov return 0; 916a7854037SNikolay Aleksandrov } 917a7854037SNikolay Aleksandrov 9181f51445aSIdo Schimmel bool br_vlan_enabled(const struct net_device *dev) 9191f51445aSIdo Schimmel { 9201f51445aSIdo Schimmel struct net_bridge *br = netdev_priv(dev); 9211f51445aSIdo Schimmel 922ae75767eSNikolay Aleksandrov return br_opt_get(br, BROPT_VLAN_ENABLED); 9231f51445aSIdo Schimmel } 9241f51445aSIdo Schimmel EXPORT_SYMBOL_GPL(br_vlan_enabled); 9251f51445aSIdo Schimmel 92631aed46fSwenxu int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 92731aed46fSwenxu { 92831aed46fSwenxu struct net_bridge *br = netdev_priv(dev); 92931aed46fSwenxu 93031aed46fSwenxu *p_proto = ntohs(br->vlan_proto); 93131aed46fSwenxu 93231aed46fSwenxu return 0; 93331aed46fSwenxu } 93431aed46fSwenxu EXPORT_SYMBOL_GPL(br_vlan_get_proto); 93531aed46fSwenxu 936dcbdf135SVladimir Oltean int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, 937dcbdf135SVladimir Oltean struct netlink_ext_ack *extack) 938204177f3SToshiaki Makita { 93922ec19f3SDanielle Ratson struct switchdev_attr attr = { 94022ec19f3SDanielle Ratson .orig_dev = br->dev, 94122ec19f3SDanielle Ratson .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, 94222ec19f3SDanielle Ratson .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 94322ec19f3SDanielle Ratson .u.vlan_protocol = ntohs(proto), 94422ec19f3SDanielle Ratson }; 945204177f3SToshiaki Makita int err = 0; 946204177f3SToshiaki Makita struct net_bridge_port *p; 9472594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 948907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 94922ec19f3SDanielle Ratson __be16 oldproto = br->vlan_proto; 950204177f3SToshiaki Makita 951204177f3SToshiaki Makita if (br->vlan_proto == proto) 952d2d427b3SToshiaki Makita return 0; 953204177f3SToshiaki Makita 954dcbdf135SVladimir Oltean err = switchdev_port_attr_set(br->dev, &attr, extack); 95522ec19f3SDanielle Ratson if (err && err != -EOPNOTSUPP) 95622ec19f3SDanielle Ratson return err; 95722ec19f3SDanielle Ratson 958204177f3SToshiaki Makita /* Add VLANs for the new proto to the device filter. */ 959204177f3SToshiaki Makita list_for_each_entry(p, &br->port_list, list) { 960907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 961907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) { 9622594e906SNikolay Aleksandrov err = vlan_vid_add(p->dev, proto, vlan->vid); 963204177f3SToshiaki Makita if (err) 964204177f3SToshiaki Makita goto err_filt; 965204177f3SToshiaki Makita } 966204177f3SToshiaki Makita } 967204177f3SToshiaki Makita 968204177f3SToshiaki Makita br->vlan_proto = proto; 969204177f3SToshiaki Makita 970204177f3SToshiaki Makita recalculate_group_addr(br); 971204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 972204177f3SToshiaki Makita 973204177f3SToshiaki Makita /* Delete VLANs for the old proto from the device filter. */ 974907b1e6eSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 975907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 976907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 9772594e906SNikolay Aleksandrov vlan_vid_del(p->dev, oldproto, vlan->vid); 978907b1e6eSNikolay Aleksandrov } 979204177f3SToshiaki Makita 980d2d427b3SToshiaki Makita return 0; 981204177f3SToshiaki Makita 982204177f3SToshiaki Makita err_filt: 98322ec19f3SDanielle Ratson attr.u.vlan_protocol = ntohs(oldproto); 984dcbdf135SVladimir Oltean switchdev_port_attr_set(br->dev, &attr, NULL); 98522ec19f3SDanielle Ratson 986907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) 9872594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 988204177f3SToshiaki Makita 989907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(p, &br->port_list, list) { 990907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 991907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 9922594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 993907b1e6eSNikolay Aleksandrov } 994204177f3SToshiaki Makita 995d2d427b3SToshiaki Makita return err; 996d2d427b3SToshiaki Makita } 997d2d427b3SToshiaki Makita 9989e781401SVladimir Oltean int br_vlan_set_proto(struct net_bridge *br, unsigned long val, 9999e781401SVladimir Oltean struct netlink_ext_ack *extack) 1000d2d427b3SToshiaki Makita { 1001a98c0c47SMenglong Dong if (!eth_type_vlan(htons(val))) 1002d2d427b3SToshiaki Makita return -EPROTONOSUPPORT; 1003d2d427b3SToshiaki Makita 1004dcbdf135SVladimir Oltean return __br_vlan_set_proto(br, htons(val), extack); 1005204177f3SToshiaki Makita } 1006204177f3SToshiaki Makita 10076dada9b1SNikolay Aleksandrov int br_vlan_set_stats(struct net_bridge *br, unsigned long val) 10086dada9b1SNikolay Aleksandrov { 10096dada9b1SNikolay Aleksandrov switch (val) { 10106dada9b1SNikolay Aleksandrov case 0: 10116dada9b1SNikolay Aleksandrov case 1: 1012ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_ENABLED, !!val); 10136dada9b1SNikolay Aleksandrov break; 10146dada9b1SNikolay Aleksandrov default: 10156dada9b1SNikolay Aleksandrov return -EINVAL; 10166dada9b1SNikolay Aleksandrov } 10176dada9b1SNikolay Aleksandrov 10186dada9b1SNikolay Aleksandrov return 0; 10196dada9b1SNikolay Aleksandrov } 10206dada9b1SNikolay Aleksandrov 10219163a0fcSNikolay Aleksandrov int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val) 10229163a0fcSNikolay Aleksandrov { 10239163a0fcSNikolay Aleksandrov struct net_bridge_port *p; 10249163a0fcSNikolay Aleksandrov 10259163a0fcSNikolay Aleksandrov /* allow to change the option if there are no port vlans configured */ 10269163a0fcSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 10279163a0fcSNikolay Aleksandrov struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 10289163a0fcSNikolay Aleksandrov 10299163a0fcSNikolay Aleksandrov if (vg->num_vlans) 10309163a0fcSNikolay Aleksandrov return -EBUSY; 10319163a0fcSNikolay Aleksandrov } 10329163a0fcSNikolay Aleksandrov 10339163a0fcSNikolay Aleksandrov switch (val) { 10349163a0fcSNikolay Aleksandrov case 0: 10359163a0fcSNikolay Aleksandrov case 1: 10369163a0fcSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_PER_PORT, !!val); 10379163a0fcSNikolay Aleksandrov break; 10389163a0fcSNikolay Aleksandrov default: 10399163a0fcSNikolay Aleksandrov return -EINVAL; 10409163a0fcSNikolay Aleksandrov } 10419163a0fcSNikolay Aleksandrov 10429163a0fcSNikolay Aleksandrov return 0; 10439163a0fcSNikolay Aleksandrov } 10449163a0fcSNikolay Aleksandrov 104577751ee8SNikolay Aleksandrov static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) 10465be5a2dfSVlad Yasevich { 10472594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 10482594e906SNikolay Aleksandrov 104977751ee8SNikolay Aleksandrov if (vid != vg->pvid) 10502594e906SNikolay Aleksandrov return false; 10512594e906SNikolay Aleksandrov 10522594e906SNikolay Aleksandrov v = br_vlan_lookup(&vg->vlan_hash, vid); 10532594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v) && 10542594e906SNikolay Aleksandrov (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 10552594e906SNikolay Aleksandrov return true; 10562594e906SNikolay Aleksandrov 10572594e906SNikolay Aleksandrov return false; 10585be5a2dfSVlad Yasevich } 10595be5a2dfSVlad Yasevich 10605be5a2dfSVlad Yasevich static void br_vlan_disable_default_pvid(struct net_bridge *br) 10615be5a2dfSVlad Yasevich { 10625be5a2dfSVlad Yasevich struct net_bridge_port *p; 10635be5a2dfSVlad Yasevich u16 pvid = br->default_pvid; 10645be5a2dfSVlad Yasevich 10655be5a2dfSVlad Yasevich /* Disable default_pvid on all ports where it is still 10665be5a2dfSVlad Yasevich * configured. 10675be5a2dfSVlad Yasevich */ 1068f545923bSNikolay Aleksandrov if (vlan_default_pvid(br_vlan_group(br), pvid)) { 1069f545923bSNikolay Aleksandrov if (!br_vlan_delete(br, pvid)) 1070f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); 1071f545923bSNikolay Aleksandrov } 10725be5a2dfSVlad Yasevich 10735be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 1074f545923bSNikolay Aleksandrov if (vlan_default_pvid(nbp_vlan_group(p), pvid) && 1075f545923bSNikolay Aleksandrov !nbp_vlan_delete(p, pvid)) 1076f545923bSNikolay Aleksandrov br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); 10775be5a2dfSVlad Yasevich } 10785be5a2dfSVlad Yasevich 10795be5a2dfSVlad Yasevich br->default_pvid = 0; 10805be5a2dfSVlad Yasevich } 10815be5a2dfSVlad Yasevich 1082169327d5SPetr Machata int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 1083169327d5SPetr Machata struct netlink_ext_ack *extack) 10845be5a2dfSVlad Yasevich { 10852594e906SNikolay Aleksandrov const struct net_bridge_vlan *pvent; 1086907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 10875be5a2dfSVlad Yasevich struct net_bridge_port *p; 1088f418af63SNikolay Aleksandrov unsigned long *changed; 1089f418af63SNikolay Aleksandrov bool vlchange; 10905be5a2dfSVlad Yasevich u16 old_pvid; 10915be5a2dfSVlad Yasevich int err = 0; 10925be5a2dfSVlad Yasevich 10930f963b75SNikolay Aleksandrov if (!pvid) { 10940f963b75SNikolay Aleksandrov br_vlan_disable_default_pvid(br); 10950f963b75SNikolay Aleksandrov return 0; 10960f963b75SNikolay Aleksandrov } 10970f963b75SNikolay Aleksandrov 1098459479daSAndy Shevchenko changed = bitmap_zalloc(BR_MAX_PORTS, GFP_KERNEL); 10995be5a2dfSVlad Yasevich if (!changed) 11005be5a2dfSVlad Yasevich return -ENOMEM; 11015be5a2dfSVlad Yasevich 11025be5a2dfSVlad Yasevich old_pvid = br->default_pvid; 11035be5a2dfSVlad Yasevich 11045be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 11055be5a2dfSVlad Yasevich * user configuration. 11065be5a2dfSVlad Yasevich */ 1107907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 1108907b1e6eSNikolay Aleksandrov pvent = br_vlan_find(vg, pvid); 1109907b1e6eSNikolay Aleksandrov if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && 11102594e906SNikolay Aleksandrov (!pvent || !br_vlan_should_use(pvent))) { 11115be5a2dfSVlad Yasevich err = br_vlan_add(br, pvid, 11125be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 11132594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1114f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1115169327d5SPetr Machata &vlchange, extack); 11165be5a2dfSVlad Yasevich if (err) 11175be5a2dfSVlad Yasevich goto out; 1118f545923bSNikolay Aleksandrov 1119f545923bSNikolay Aleksandrov if (br_vlan_delete(br, old_pvid)) 1120f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, old_pvid, 0, RTM_DELVLAN); 1121f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_NEWVLAN); 1122442b03c3SXin Long __set_bit(0, changed); 11235be5a2dfSVlad Yasevich } 11245be5a2dfSVlad Yasevich 11255be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 11265be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 11275be5a2dfSVlad Yasevich * user configuration. 11285be5a2dfSVlad Yasevich */ 1129907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 11305be5a2dfSVlad Yasevich if ((old_pvid && 1131907b1e6eSNikolay Aleksandrov !vlan_default_pvid(vg, old_pvid)) || 1132907b1e6eSNikolay Aleksandrov br_vlan_find(vg, pvid)) 11335be5a2dfSVlad Yasevich continue; 11345be5a2dfSVlad Yasevich 11355be5a2dfSVlad Yasevich err = nbp_vlan_add(p, pvid, 11365be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 1137f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1138169327d5SPetr Machata &vlchange, extack); 11395be5a2dfSVlad Yasevich if (err) 11405be5a2dfSVlad Yasevich goto err_port; 1141f545923bSNikolay Aleksandrov if (nbp_vlan_delete(p, old_pvid)) 1142f545923bSNikolay Aleksandrov br_vlan_notify(br, p, old_pvid, 0, RTM_DELVLAN); 1143f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, pvid, 0, RTM_NEWVLAN); 1144442b03c3SXin Long __set_bit(p->port_no, changed); 11455be5a2dfSVlad Yasevich } 11465be5a2dfSVlad Yasevich 11475be5a2dfSVlad Yasevich br->default_pvid = pvid; 11485be5a2dfSVlad Yasevich 11495be5a2dfSVlad Yasevich out: 1150459479daSAndy Shevchenko bitmap_free(changed); 11515be5a2dfSVlad Yasevich return err; 11525be5a2dfSVlad Yasevich 11535be5a2dfSVlad Yasevich err_port: 11545be5a2dfSVlad Yasevich list_for_each_entry_continue_reverse(p, &br->port_list, list) { 11555be5a2dfSVlad Yasevich if (!test_bit(p->port_no, changed)) 11565be5a2dfSVlad Yasevich continue; 11575be5a2dfSVlad Yasevich 1158f545923bSNikolay Aleksandrov if (old_pvid) { 11595be5a2dfSVlad Yasevich nbp_vlan_add(p, old_pvid, 11605be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 1161f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1162169327d5SPetr Machata &vlchange, NULL); 1163f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, old_pvid, 0, RTM_NEWVLAN); 1164f545923bSNikolay Aleksandrov } 11655be5a2dfSVlad Yasevich nbp_vlan_delete(p, pvid); 1166f545923bSNikolay Aleksandrov br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); 11675be5a2dfSVlad Yasevich } 11685be5a2dfSVlad Yasevich 11695be5a2dfSVlad Yasevich if (test_bit(0, changed)) { 1170f545923bSNikolay Aleksandrov if (old_pvid) { 11715be5a2dfSVlad Yasevich br_vlan_add(br, old_pvid, 11725be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 11732594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1174f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1175169327d5SPetr Machata &vlchange, NULL); 1176f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, old_pvid, 0, RTM_NEWVLAN); 1177f545923bSNikolay Aleksandrov } 11785be5a2dfSVlad Yasevich br_vlan_delete(br, pvid); 1179f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); 11805be5a2dfSVlad Yasevich } 11815be5a2dfSVlad Yasevich goto out; 11825be5a2dfSVlad Yasevich } 11835be5a2dfSVlad Yasevich 11849e781401SVladimir Oltean int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, 11859e781401SVladimir Oltean struct netlink_ext_ack *extack) 118696a20d9dSVlad Yasevich { 118796a20d9dSVlad Yasevich u16 pvid = val; 118896a20d9dSVlad Yasevich int err = 0; 118996a20d9dSVlad Yasevich 11905be5a2dfSVlad Yasevich if (val >= VLAN_VID_MASK) 119196a20d9dSVlad Yasevich return -EINVAL; 119296a20d9dSVlad Yasevich 119396a20d9dSVlad Yasevich if (pvid == br->default_pvid) 1194047831a9SXin Long goto out; 119596a20d9dSVlad Yasevich 119696a20d9dSVlad Yasevich /* Only allow default pvid change when filtering is disabled */ 1197ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED)) { 119896a20d9dSVlad Yasevich pr_info_once("Please disable vlan filtering to change default_pvid\n"); 119996a20d9dSVlad Yasevich err = -EPERM; 1200047831a9SXin Long goto out; 120196a20d9dSVlad Yasevich } 12029e781401SVladimir Oltean err = __br_vlan_set_default_pvid(br, pvid, extack); 1203047831a9SXin Long out: 120496a20d9dSVlad Yasevich return err; 120596a20d9dSVlad Yasevich } 120696a20d9dSVlad Yasevich 12075be5a2dfSVlad Yasevich int br_vlan_init(struct net_bridge *br) 12088580e211SToshiaki Makita { 1209907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 12102594e906SNikolay Aleksandrov int ret = -ENOMEM; 12112594e906SNikolay Aleksandrov 1212907b1e6eSNikolay Aleksandrov vg = kzalloc(sizeof(*vg), GFP_KERNEL); 1213907b1e6eSNikolay Aleksandrov if (!vg) 12142594e906SNikolay Aleksandrov goto out; 1215907b1e6eSNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 12162594e906SNikolay Aleksandrov if (ret) 12172594e906SNikolay Aleksandrov goto err_rhtbl; 1218efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1219efa5356bSRoopa Prabhu if (ret) 1220efa5356bSRoopa Prabhu goto err_tunnel_init; 1221907b1e6eSNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 12228580e211SToshiaki Makita br->vlan_proto = htons(ETH_P_8021Q); 122396a20d9dSVlad Yasevich br->default_pvid = 1; 1224907b1e6eSNikolay Aleksandrov rcu_assign_pointer(br->vlgrp, vg); 12252594e906SNikolay Aleksandrov 12262594e906SNikolay Aleksandrov out: 12272594e906SNikolay Aleksandrov return ret; 12282594e906SNikolay Aleksandrov 1229efa5356bSRoopa Prabhu err_tunnel_init: 1230907b1e6eSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 12312594e906SNikolay Aleksandrov err_rhtbl: 1232907b1e6eSNikolay Aleksandrov kfree(vg); 12332594e906SNikolay Aleksandrov 12342594e906SNikolay Aleksandrov goto out; 12352594e906SNikolay Aleksandrov } 12362594e906SNikolay Aleksandrov 1237169327d5SPetr Machata int nbp_vlan_init(struct net_bridge_port *p, struct netlink_ext_ack *extack) 12382594e906SNikolay Aleksandrov { 1239404cdbf0SElad Raz struct switchdev_attr attr = { 1240404cdbf0SElad Raz .orig_dev = p->br->dev, 1241404cdbf0SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 1242404cdbf0SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 1243ae75767eSNikolay Aleksandrov .u.vlan_filtering = br_opt_get(p->br, BROPT_VLAN_ENABLED), 1244404cdbf0SElad Raz }; 1245263344e6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 12462594e906SNikolay Aleksandrov int ret = -ENOMEM; 12472594e906SNikolay Aleksandrov 1248263344e6SNikolay Aleksandrov vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); 1249263344e6SNikolay Aleksandrov if (!vg) 12502594e906SNikolay Aleksandrov goto out; 12512594e906SNikolay Aleksandrov 1252dcbdf135SVladimir Oltean ret = switchdev_port_attr_set(p->dev, &attr, extack); 1253404cdbf0SElad Raz if (ret && ret != -EOPNOTSUPP) 1254404cdbf0SElad Raz goto err_vlan_enabled; 1255404cdbf0SElad Raz 1256263344e6SNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 12572594e906SNikolay Aleksandrov if (ret) 12582594e906SNikolay Aleksandrov goto err_rhtbl; 1259efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1260efa5356bSRoopa Prabhu if (ret) 1261efa5356bSRoopa Prabhu goto err_tunnel_init; 1262263344e6SNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 1263907b1e6eSNikolay Aleksandrov rcu_assign_pointer(p->vlgrp, vg); 12642594e906SNikolay Aleksandrov if (p->br->default_pvid) { 1265f418af63SNikolay Aleksandrov bool changed; 1266f418af63SNikolay Aleksandrov 12672594e906SNikolay Aleksandrov ret = nbp_vlan_add(p, p->br->default_pvid, 12682594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1269f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1270169327d5SPetr Machata &changed, extack); 12712594e906SNikolay Aleksandrov if (ret) 12722594e906SNikolay Aleksandrov goto err_vlan_add; 1273f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, p->br->default_pvid, 0, RTM_NEWVLAN); 12742594e906SNikolay Aleksandrov } 12752594e906SNikolay Aleksandrov out: 12762594e906SNikolay Aleksandrov return ret; 12772594e906SNikolay Aleksandrov 12782594e906SNikolay Aleksandrov err_vlan_add: 127907bc588fSIdo Schimmel RCU_INIT_POINTER(p->vlgrp, NULL); 128007bc588fSIdo Schimmel synchronize_rcu(); 1281efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 1282efa5356bSRoopa Prabhu err_tunnel_init: 1283efa5356bSRoopa Prabhu rhashtable_destroy(&vg->vlan_hash); 12842594e906SNikolay Aleksandrov err_rhtbl: 1285df2c4334SYotam Gigi err_vlan_enabled: 1286263344e6SNikolay Aleksandrov kfree(vg); 12872594e906SNikolay Aleksandrov 12882594e906SNikolay Aleksandrov goto out; 12898580e211SToshiaki Makita } 12908580e211SToshiaki Makita 12918adff41cSToshiaki Makita /* Must be protected by RTNL. 12928adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 1293f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 12948adff41cSToshiaki Makita */ 1295f418af63SNikolay Aleksandrov int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1296169327d5SPetr Machata bool *changed, struct netlink_ext_ack *extack) 1297243a2e63SVlad Yasevich { 12982594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 12992594e906SNikolay Aleksandrov int ret; 1300243a2e63SVlad Yasevich 1301243a2e63SVlad Yasevich ASSERT_RTNL(); 1302243a2e63SVlad Yasevich 1303f418af63SNikolay Aleksandrov *changed = false; 1304907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(nbp_vlan_group(port), vid); 13052594e906SNikolay Aleksandrov if (vlan) { 130627c5f74cSVladimir Oltean bool would_change = __vlan_flags_would_change(vlan, flags); 130727c5f74cSVladimir Oltean 130827c5f74cSVladimir Oltean if (would_change) { 13097fbac984SIdo Schimmel /* Pass the flags to the hardware bridge */ 13108d23a54fSVladimir Oltean ret = br_switchdev_port_vlan_add(port->dev, vid, flags, 13118d23a54fSVladimir Oltean true, extack); 13127fbac984SIdo Schimmel if (ret && ret != -EOPNOTSUPP) 13137fbac984SIdo Schimmel return ret; 131427c5f74cSVladimir Oltean } 131527c5f74cSVladimir Oltean 131627c5f74cSVladimir Oltean __vlan_flags_commit(vlan, flags); 131727c5f74cSVladimir Oltean *changed = would_change; 1318f418af63SNikolay Aleksandrov 13192594e906SNikolay Aleksandrov return 0; 1320243a2e63SVlad Yasevich } 1321243a2e63SVlad Yasevich 13222594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 13232594e906SNikolay Aleksandrov if (!vlan) 13242594e906SNikolay Aleksandrov return -ENOMEM; 1325243a2e63SVlad Yasevich 13262594e906SNikolay Aleksandrov vlan->vid = vid; 13272594e906SNikolay Aleksandrov vlan->port = port; 1328169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 13292594e906SNikolay Aleksandrov if (ret) 13302594e906SNikolay Aleksandrov kfree(vlan); 1331f418af63SNikolay Aleksandrov else 1332f418af63SNikolay Aleksandrov *changed = true; 1333243a2e63SVlad Yasevich 13342594e906SNikolay Aleksandrov return ret; 1335243a2e63SVlad Yasevich } 1336243a2e63SVlad Yasevich 13378adff41cSToshiaki Makita /* Must be protected by RTNL. 13388adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 13398adff41cSToshiaki Makita */ 1340243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1341243a2e63SVlad Yasevich { 13422594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 1343243a2e63SVlad Yasevich 1344243a2e63SVlad Yasevich ASSERT_RTNL(); 1345243a2e63SVlad Yasevich 1346907b1e6eSNikolay Aleksandrov v = br_vlan_find(nbp_vlan_group(port), vid); 13472594e906SNikolay Aleksandrov if (!v) 13482594e906SNikolay Aleksandrov return -ENOENT; 1349424bb9c9SToshiaki Makita br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); 13501ea2d020SNikolay Aleksandrov br_fdb_delete_by_port(port->br, port, vid, 0); 1351bc9a25d2SVlad Yasevich 13522594e906SNikolay Aleksandrov return __vlan_del(v); 1353243a2e63SVlad Yasevich } 1354243a2e63SVlad Yasevich 1355243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 1356243a2e63SVlad Yasevich { 1357f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 1358f409d0edSNikolay Aleksandrov 1359243a2e63SVlad Yasevich ASSERT_RTNL(); 1360243a2e63SVlad Yasevich 1361f409d0edSNikolay Aleksandrov vg = nbp_vlan_group(port); 1362f545923bSNikolay Aleksandrov __vlan_flush(port->br, port, vg); 1363f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(port->vlgrp, NULL); 1364f409d0edSNikolay Aleksandrov synchronize_rcu(); 1365f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 13665be5a2dfSVlad Yasevich } 1367a60c0903SNikolay Aleksandrov 1368a60c0903SNikolay Aleksandrov void br_vlan_get_stats(const struct net_bridge_vlan *v, 1369281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats) 1370a60c0903SNikolay Aleksandrov { 1371a60c0903SNikolay Aleksandrov int i; 1372a60c0903SNikolay Aleksandrov 1373a60c0903SNikolay Aleksandrov memset(stats, 0, sizeof(*stats)); 1374a60c0903SNikolay Aleksandrov for_each_possible_cpu(i) { 1375a60c0903SNikolay Aleksandrov u64 rxpackets, rxbytes, txpackets, txbytes; 1376281cc284SHeiner Kallweit struct pcpu_sw_netstats *cpu_stats; 1377a60c0903SNikolay Aleksandrov unsigned int start; 1378a60c0903SNikolay Aleksandrov 1379a60c0903SNikolay Aleksandrov cpu_stats = per_cpu_ptr(v->stats, i); 1380a60c0903SNikolay Aleksandrov do { 1381a60c0903SNikolay Aleksandrov start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); 1382a60c0903SNikolay Aleksandrov rxpackets = cpu_stats->rx_packets; 1383a60c0903SNikolay Aleksandrov rxbytes = cpu_stats->rx_bytes; 1384a60c0903SNikolay Aleksandrov txbytes = cpu_stats->tx_bytes; 1385a60c0903SNikolay Aleksandrov txpackets = cpu_stats->tx_packets; 1386a60c0903SNikolay Aleksandrov } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); 1387a60c0903SNikolay Aleksandrov 1388a60c0903SNikolay Aleksandrov stats->rx_packets += rxpackets; 1389a60c0903SNikolay Aleksandrov stats->rx_bytes += rxbytes; 1390a60c0903SNikolay Aleksandrov stats->tx_bytes += txbytes; 1391a60c0903SNikolay Aleksandrov stats->tx_packets += txpackets; 1392a60c0903SNikolay Aleksandrov } 1393a60c0903SNikolay Aleksandrov } 13944d4fd361SPetr Machata 139599f62a74SVladimir Oltean int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 13964d4fd361SPetr Machata { 13974d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 139899f62a74SVladimir Oltean struct net_bridge_port *p; 13994d4fd361SPetr Machata 140099f62a74SVladimir Oltean ASSERT_RTNL(); 140199f62a74SVladimir Oltean p = br_port_get_check_rtnl(dev); 14025a6db04cSIdo Schimmel if (p) 14035a6db04cSIdo Schimmel vg = nbp_vlan_group(p); 14045a6db04cSIdo Schimmel else if (netif_is_bridge_master(dev)) 14054d4fd361SPetr Machata vg = br_vlan_group(netdev_priv(dev)); 14064d4fd361SPetr Machata else 14074d4fd361SPetr Machata return -EINVAL; 14084d4fd361SPetr Machata 14094d4fd361SPetr Machata *p_pvid = br_get_pvid(vg); 14104d4fd361SPetr Machata return 0; 14114d4fd361SPetr Machata } 14124d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_pvid); 14134d4fd361SPetr Machata 14147582f5b7SPablo Neira Ayuso int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 14157582f5b7SPablo Neira Ayuso { 141699f62a74SVladimir Oltean struct net_bridge_vlan_group *vg; 141799f62a74SVladimir Oltean struct net_bridge_port *p; 141899f62a74SVladimir Oltean 141999f62a74SVladimir Oltean p = br_port_get_check_rcu(dev); 142099f62a74SVladimir Oltean if (p) 142199f62a74SVladimir Oltean vg = nbp_vlan_group_rcu(p); 142299f62a74SVladimir Oltean else if (netif_is_bridge_master(dev)) 142399f62a74SVladimir Oltean vg = br_vlan_group_rcu(netdev_priv(dev)); 142499f62a74SVladimir Oltean else 142599f62a74SVladimir Oltean return -EINVAL; 142699f62a74SVladimir Oltean 142799f62a74SVladimir Oltean *p_pvid = br_get_pvid(vg); 142899f62a74SVladimir Oltean return 0; 14297582f5b7SPablo Neira Ayuso } 14307582f5b7SPablo Neira Ayuso EXPORT_SYMBOL_GPL(br_vlan_get_pvid_rcu); 14317582f5b7SPablo Neira Ayuso 1432bcf2766bSFelix Fietkau void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1433bcf2766bSFelix Fietkau struct net_device_path_ctx *ctx, 1434bcf2766bSFelix Fietkau struct net_device_path *path) 1435bcf2766bSFelix Fietkau { 1436bcf2766bSFelix Fietkau struct net_bridge_vlan_group *vg; 1437bcf2766bSFelix Fietkau int idx = ctx->num_vlans - 1; 1438bcf2766bSFelix Fietkau u16 vid; 1439bcf2766bSFelix Fietkau 1440bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_KEEP; 1441bcf2766bSFelix Fietkau 1442bcf2766bSFelix Fietkau if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 1443bcf2766bSFelix Fietkau return; 1444bcf2766bSFelix Fietkau 1445bcf2766bSFelix Fietkau vg = br_vlan_group(br); 1446bcf2766bSFelix Fietkau 1447bcf2766bSFelix Fietkau if (idx >= 0 && 1448bcf2766bSFelix Fietkau ctx->vlan[idx].proto == br->vlan_proto) { 1449bcf2766bSFelix Fietkau vid = ctx->vlan[idx].id; 1450bcf2766bSFelix Fietkau } else { 1451bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_TAG; 1452bcf2766bSFelix Fietkau vid = br_get_pvid(vg); 1453bcf2766bSFelix Fietkau } 1454bcf2766bSFelix Fietkau 1455bcf2766bSFelix Fietkau path->bridge.vlan_id = vid; 1456bcf2766bSFelix Fietkau path->bridge.vlan_proto = br->vlan_proto; 1457bcf2766bSFelix Fietkau } 1458bcf2766bSFelix Fietkau 1459bcf2766bSFelix Fietkau int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1460bcf2766bSFelix Fietkau struct net_bridge_port *dst, 1461bcf2766bSFelix Fietkau struct net_device_path *path) 1462bcf2766bSFelix Fietkau { 1463bcf2766bSFelix Fietkau struct net_bridge_vlan_group *vg; 1464bcf2766bSFelix Fietkau struct net_bridge_vlan *v; 1465bcf2766bSFelix Fietkau 1466bcf2766bSFelix Fietkau if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 1467bcf2766bSFelix Fietkau return 0; 1468bcf2766bSFelix Fietkau 1469bcf2766bSFelix Fietkau vg = nbp_vlan_group_rcu(dst); 1470bcf2766bSFelix Fietkau v = br_vlan_find(vg, path->bridge.vlan_id); 1471bcf2766bSFelix Fietkau if (!v || !br_vlan_should_use(v)) 1472bcf2766bSFelix Fietkau return -EINVAL; 1473bcf2766bSFelix Fietkau 1474bcf2766bSFelix Fietkau if (!(v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 1475bcf2766bSFelix Fietkau return 0; 1476bcf2766bSFelix Fietkau 1477bcf2766bSFelix Fietkau if (path->bridge.vlan_mode == DEV_PATH_BR_VLAN_TAG) 1478bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_KEEP; 147926267bf9SFelix Fietkau else if (v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV) 148026267bf9SFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_UNTAG_HW; 1481bcf2766bSFelix Fietkau else 1482bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_UNTAG; 1483bcf2766bSFelix Fietkau 1484bcf2766bSFelix Fietkau return 0; 1485bcf2766bSFelix Fietkau } 1486bcf2766bSFelix Fietkau 14874d4fd361SPetr Machata int br_vlan_get_info(const struct net_device *dev, u16 vid, 14884d4fd361SPetr Machata struct bridge_vlan_info *p_vinfo) 14894d4fd361SPetr Machata { 14904d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 14914d4fd361SPetr Machata struct net_bridge_vlan *v; 14924d4fd361SPetr Machata struct net_bridge_port *p; 14934d4fd361SPetr Machata 14944d4fd361SPetr Machata ASSERT_RTNL(); 14954d4fd361SPetr Machata p = br_port_get_check_rtnl(dev); 14964d4fd361SPetr Machata if (p) 14974d4fd361SPetr Machata vg = nbp_vlan_group(p); 14982b18d79eSPetr Machata else if (netif_is_bridge_master(dev)) 14992b18d79eSPetr Machata vg = br_vlan_group(netdev_priv(dev)); 15004d4fd361SPetr Machata else 15014d4fd361SPetr Machata return -EINVAL; 15024d4fd361SPetr Machata 15034d4fd361SPetr Machata v = br_vlan_find(vg, vid); 15044d4fd361SPetr Machata if (!v) 15054d4fd361SPetr Machata return -ENOENT; 15064d4fd361SPetr Machata 15074d4fd361SPetr Machata p_vinfo->vid = vid; 15084d4fd361SPetr Machata p_vinfo->flags = v->flags; 1509f40d9b20SVladimir Oltean if (vid == br_get_pvid(vg)) 1510f40d9b20SVladimir Oltean p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID; 15114d4fd361SPetr Machata return 0; 15124d4fd361SPetr Machata } 15134d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_info); 15149c0ec2e7SMike Manning 1515ee80dd2eSVladimir Oltean int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 1516ee80dd2eSVladimir Oltean struct bridge_vlan_info *p_vinfo) 1517ee80dd2eSVladimir Oltean { 1518ee80dd2eSVladimir Oltean struct net_bridge_vlan_group *vg; 1519ee80dd2eSVladimir Oltean struct net_bridge_vlan *v; 1520ee80dd2eSVladimir Oltean struct net_bridge_port *p; 1521ee80dd2eSVladimir Oltean 1522ee80dd2eSVladimir Oltean p = br_port_get_check_rcu(dev); 1523ee80dd2eSVladimir Oltean if (p) 1524ee80dd2eSVladimir Oltean vg = nbp_vlan_group_rcu(p); 1525ee80dd2eSVladimir Oltean else if (netif_is_bridge_master(dev)) 1526ee80dd2eSVladimir Oltean vg = br_vlan_group_rcu(netdev_priv(dev)); 1527ee80dd2eSVladimir Oltean else 1528ee80dd2eSVladimir Oltean return -EINVAL; 1529ee80dd2eSVladimir Oltean 1530ee80dd2eSVladimir Oltean v = br_vlan_find(vg, vid); 1531ee80dd2eSVladimir Oltean if (!v) 1532ee80dd2eSVladimir Oltean return -ENOENT; 1533ee80dd2eSVladimir Oltean 1534ee80dd2eSVladimir Oltean p_vinfo->vid = vid; 1535ee80dd2eSVladimir Oltean p_vinfo->flags = v->flags; 1536ee80dd2eSVladimir Oltean if (vid == br_get_pvid(vg)) 1537ee80dd2eSVladimir Oltean p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID; 1538ee80dd2eSVladimir Oltean return 0; 1539ee80dd2eSVladimir Oltean } 1540ee80dd2eSVladimir Oltean EXPORT_SYMBOL_GPL(br_vlan_get_info_rcu); 1541ee80dd2eSVladimir Oltean 15429c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev(const struct net_device *dev) 15439c0ec2e7SMike Manning { 15449c0ec2e7SMike Manning return is_vlan_dev(dev) && 15459c0ec2e7SMike Manning !!(vlan_dev_priv(dev)->flags & VLAN_FLAG_BRIDGE_BINDING); 15469c0ec2e7SMike Manning } 15479c0ec2e7SMike Manning 15489c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev_fn(struct net_device *dev, 1549eff74233STaehee Yoo __always_unused struct netdev_nested_priv *priv) 15509c0ec2e7SMike Manning { 15519c0ec2e7SMike Manning return br_vlan_is_bind_vlan_dev(dev); 15529c0ec2e7SMike Manning } 15539c0ec2e7SMike Manning 15549c0ec2e7SMike Manning static bool br_vlan_has_upper_bind_vlan_dev(struct net_device *dev) 15559c0ec2e7SMike Manning { 15569c0ec2e7SMike Manning int found; 15579c0ec2e7SMike Manning 15589c0ec2e7SMike Manning rcu_read_lock(); 15599c0ec2e7SMike Manning found = netdev_walk_all_upper_dev_rcu(dev, br_vlan_is_bind_vlan_dev_fn, 15609c0ec2e7SMike Manning NULL); 15619c0ec2e7SMike Manning rcu_read_unlock(); 15629c0ec2e7SMike Manning 15639c0ec2e7SMike Manning return !!found; 15649c0ec2e7SMike Manning } 15659c0ec2e7SMike Manning 15669c0ec2e7SMike Manning struct br_vlan_bind_walk_data { 15679c0ec2e7SMike Manning u16 vid; 15689c0ec2e7SMike Manning struct net_device *result; 15699c0ec2e7SMike Manning }; 15709c0ec2e7SMike Manning 15719c0ec2e7SMike Manning static int br_vlan_match_bind_vlan_dev_fn(struct net_device *dev, 1572eff74233STaehee Yoo struct netdev_nested_priv *priv) 15739c0ec2e7SMike Manning { 1574eff74233STaehee Yoo struct br_vlan_bind_walk_data *data = priv->data; 15759c0ec2e7SMike Manning int found = 0; 15769c0ec2e7SMike Manning 15779c0ec2e7SMike Manning if (br_vlan_is_bind_vlan_dev(dev) && 15789c0ec2e7SMike Manning vlan_dev_priv(dev)->vlan_id == data->vid) { 15799c0ec2e7SMike Manning data->result = dev; 15809c0ec2e7SMike Manning found = 1; 15819c0ec2e7SMike Manning } 15829c0ec2e7SMike Manning 15839c0ec2e7SMike Manning return found; 15849c0ec2e7SMike Manning } 15859c0ec2e7SMike Manning 15869c0ec2e7SMike Manning static struct net_device * 15879c0ec2e7SMike Manning br_vlan_get_upper_bind_vlan_dev(struct net_device *dev, u16 vid) 15889c0ec2e7SMike Manning { 15899c0ec2e7SMike Manning struct br_vlan_bind_walk_data data = { 15909c0ec2e7SMike Manning .vid = vid, 15919c0ec2e7SMike Manning }; 1592eff74233STaehee Yoo struct netdev_nested_priv priv = { 1593eff74233STaehee Yoo .data = (void *)&data, 1594eff74233STaehee Yoo }; 15959c0ec2e7SMike Manning 15969c0ec2e7SMike Manning rcu_read_lock(); 15979c0ec2e7SMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_match_bind_vlan_dev_fn, 1598eff74233STaehee Yoo &priv); 15999c0ec2e7SMike Manning rcu_read_unlock(); 16009c0ec2e7SMike Manning 16019c0ec2e7SMike Manning return data.result; 16029c0ec2e7SMike Manning } 16039c0ec2e7SMike Manning 16049c0ec2e7SMike Manning static bool br_vlan_is_dev_up(const struct net_device *dev) 16059c0ec2e7SMike Manning { 16069c0ec2e7SMike Manning return !!(dev->flags & IFF_UP) && netif_oper_up(dev); 16079c0ec2e7SMike Manning } 16089c0ec2e7SMike Manning 16099c0ec2e7SMike Manning static void br_vlan_set_vlan_dev_state(const struct net_bridge *br, 16109c0ec2e7SMike Manning struct net_device *vlan_dev) 16119c0ec2e7SMike Manning { 16129c0ec2e7SMike Manning u16 vid = vlan_dev_priv(vlan_dev)->vlan_id; 16139c0ec2e7SMike Manning struct net_bridge_vlan_group *vg; 16149c0ec2e7SMike Manning struct net_bridge_port *p; 16159c0ec2e7SMike Manning bool has_carrier = false; 16169c0ec2e7SMike Manning 16178e1acd4fSMike Manning if (!netif_carrier_ok(br->dev)) { 16188e1acd4fSMike Manning netif_carrier_off(vlan_dev); 16198e1acd4fSMike Manning return; 16208e1acd4fSMike Manning } 16218e1acd4fSMike Manning 16229c0ec2e7SMike Manning list_for_each_entry(p, &br->port_list, list) { 16239c0ec2e7SMike Manning vg = nbp_vlan_group(p); 16249c0ec2e7SMike Manning if (br_vlan_find(vg, vid) && br_vlan_is_dev_up(p->dev)) { 16259c0ec2e7SMike Manning has_carrier = true; 16269c0ec2e7SMike Manning break; 16279c0ec2e7SMike Manning } 16289c0ec2e7SMike Manning } 16299c0ec2e7SMike Manning 16309c0ec2e7SMike Manning if (has_carrier) 16319c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 16329c0ec2e7SMike Manning else 16339c0ec2e7SMike Manning netif_carrier_off(vlan_dev); 16349c0ec2e7SMike Manning } 16359c0ec2e7SMike Manning 16369c0ec2e7SMike Manning static void br_vlan_set_all_vlan_dev_state(struct net_bridge_port *p) 16379c0ec2e7SMike Manning { 16389c0ec2e7SMike Manning struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 16399c0ec2e7SMike Manning struct net_bridge_vlan *vlan; 16409c0ec2e7SMike Manning struct net_device *vlan_dev; 16419c0ec2e7SMike Manning 16429c0ec2e7SMike Manning list_for_each_entry(vlan, &vg->vlan_list, vlist) { 16439c0ec2e7SMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, 16449c0ec2e7SMike Manning vlan->vid); 16459c0ec2e7SMike Manning if (vlan_dev) { 16468e1acd4fSMike Manning if (br_vlan_is_dev_up(p->dev)) { 16478e1acd4fSMike Manning if (netif_carrier_ok(p->br->dev)) 16489c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 16498e1acd4fSMike Manning } else { 16509c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 16519c0ec2e7SMike Manning } 16529c0ec2e7SMike Manning } 16539c0ec2e7SMike Manning } 16548e1acd4fSMike Manning } 16559c0ec2e7SMike Manning 16569c0ec2e7SMike Manning static void br_vlan_upper_change(struct net_device *dev, 16579c0ec2e7SMike Manning struct net_device *upper_dev, 16589c0ec2e7SMike Manning bool linking) 16599c0ec2e7SMike Manning { 16609c0ec2e7SMike Manning struct net_bridge *br = netdev_priv(dev); 16619c0ec2e7SMike Manning 16629c0ec2e7SMike Manning if (!br_vlan_is_bind_vlan_dev(upper_dev)) 16639c0ec2e7SMike Manning return; 16649c0ec2e7SMike Manning 16659c0ec2e7SMike Manning if (linking) { 16669c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(br, upper_dev); 16679c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, true); 16689c0ec2e7SMike Manning } else { 16699c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, 16709c0ec2e7SMike Manning br_vlan_has_upper_bind_vlan_dev(dev)); 16719c0ec2e7SMike Manning } 16729c0ec2e7SMike Manning } 16739c0ec2e7SMike Manning 16748e1acd4fSMike Manning struct br_vlan_link_state_walk_data { 16758e1acd4fSMike Manning struct net_bridge *br; 16768e1acd4fSMike Manning }; 16778e1acd4fSMike Manning 16788e1acd4fSMike Manning static int br_vlan_link_state_change_fn(struct net_device *vlan_dev, 1679eff74233STaehee Yoo struct netdev_nested_priv *priv) 16808e1acd4fSMike Manning { 1681eff74233STaehee Yoo struct br_vlan_link_state_walk_data *data = priv->data; 16828e1acd4fSMike Manning 16838e1acd4fSMike Manning if (br_vlan_is_bind_vlan_dev(vlan_dev)) 16848e1acd4fSMike Manning br_vlan_set_vlan_dev_state(data->br, vlan_dev); 16858e1acd4fSMike Manning 16868e1acd4fSMike Manning return 0; 16878e1acd4fSMike Manning } 16888e1acd4fSMike Manning 16898e1acd4fSMike Manning static void br_vlan_link_state_change(struct net_device *dev, 16908e1acd4fSMike Manning struct net_bridge *br) 16918e1acd4fSMike Manning { 16928e1acd4fSMike Manning struct br_vlan_link_state_walk_data data = { 16938e1acd4fSMike Manning .br = br 16948e1acd4fSMike Manning }; 1695eff74233STaehee Yoo struct netdev_nested_priv priv = { 1696eff74233STaehee Yoo .data = (void *)&data, 1697eff74233STaehee Yoo }; 16988e1acd4fSMike Manning 16998e1acd4fSMike Manning rcu_read_lock(); 17008e1acd4fSMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_link_state_change_fn, 1701eff74233STaehee Yoo &priv); 17028e1acd4fSMike Manning rcu_read_unlock(); 17038e1acd4fSMike Manning } 17048e1acd4fSMike Manning 17059c0ec2e7SMike Manning /* Must be protected by RTNL. */ 170680900acdSMike Manning static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid) 170780900acdSMike Manning { 170880900acdSMike Manning struct net_device *vlan_dev; 170980900acdSMike Manning 171080900acdSMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 171180900acdSMike Manning return; 171280900acdSMike Manning 171380900acdSMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, vid); 171480900acdSMike Manning if (vlan_dev) 171580900acdSMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 171680900acdSMike Manning } 171780900acdSMike Manning 171880900acdSMike Manning /* Must be protected by RTNL. */ 1719091adf9bSNikolay Aleksandrov int br_vlan_bridge_event(struct net_device *dev, unsigned long event, void *ptr) 17209c0ec2e7SMike Manning { 17219c0ec2e7SMike Manning struct netdev_notifier_changeupper_info *info; 1722091adf9bSNikolay Aleksandrov struct net_bridge *br = netdev_priv(dev); 1723f545923bSNikolay Aleksandrov int vlcmd = 0, ret = 0; 1724f545923bSNikolay Aleksandrov bool changed = false; 17259c0ec2e7SMike Manning 17269c0ec2e7SMike Manning switch (event) { 1727091adf9bSNikolay Aleksandrov case NETDEV_REGISTER: 1728091adf9bSNikolay Aleksandrov ret = br_vlan_add(br, br->default_pvid, 1729091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1730091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1731091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, &changed, NULL); 1732f545923bSNikolay Aleksandrov vlcmd = RTM_NEWVLAN; 1733091adf9bSNikolay Aleksandrov break; 1734091adf9bSNikolay Aleksandrov case NETDEV_UNREGISTER: 1735f545923bSNikolay Aleksandrov changed = !br_vlan_delete(br, br->default_pvid); 1736f545923bSNikolay Aleksandrov vlcmd = RTM_DELVLAN; 1737091adf9bSNikolay Aleksandrov break; 17389c0ec2e7SMike Manning case NETDEV_CHANGEUPPER: 17399c0ec2e7SMike Manning info = ptr; 17409c0ec2e7SMike Manning br_vlan_upper_change(dev, info->upper_dev, info->linking); 17419c0ec2e7SMike Manning break; 17428e1acd4fSMike Manning 17438e1acd4fSMike Manning case NETDEV_CHANGE: 17448e1acd4fSMike Manning case NETDEV_UP: 17458e1acd4fSMike Manning if (!br_opt_get(br, BROPT_VLAN_BRIDGE_BINDING)) 1746091adf9bSNikolay Aleksandrov break; 17478e1acd4fSMike Manning br_vlan_link_state_change(dev, br); 17488e1acd4fSMike Manning break; 17499c0ec2e7SMike Manning } 1750f545923bSNikolay Aleksandrov if (changed) 1751f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, br->default_pvid, 0, vlcmd); 1752091adf9bSNikolay Aleksandrov 1753091adf9bSNikolay Aleksandrov return ret; 17549c0ec2e7SMike Manning } 17559c0ec2e7SMike Manning 17569c0ec2e7SMike Manning /* Must be protected by RTNL. */ 17579c0ec2e7SMike Manning void br_vlan_port_event(struct net_bridge_port *p, unsigned long event) 17589c0ec2e7SMike Manning { 17599c0ec2e7SMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 17609c0ec2e7SMike Manning return; 17619c0ec2e7SMike Manning 17629c0ec2e7SMike Manning switch (event) { 17639c0ec2e7SMike Manning case NETDEV_CHANGE: 17649c0ec2e7SMike Manning case NETDEV_DOWN: 17659c0ec2e7SMike Manning case NETDEV_UP: 17669c0ec2e7SMike Manning br_vlan_set_all_vlan_dev_state(p); 17679c0ec2e7SMike Manning break; 17689c0ec2e7SMike Manning } 17699c0ec2e7SMike Manning } 17708dcea187SNikolay Aleksandrov 177156d09976SNikolay Aleksandrov static bool br_vlan_stats_fill(struct sk_buff *skb, 177256d09976SNikolay Aleksandrov const struct net_bridge_vlan *v) 177356d09976SNikolay Aleksandrov { 1774281cc284SHeiner Kallweit struct pcpu_sw_netstats stats; 177556d09976SNikolay Aleksandrov struct nlattr *nest; 177656d09976SNikolay Aleksandrov 177756d09976SNikolay Aleksandrov nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY_STATS); 177856d09976SNikolay Aleksandrov if (!nest) 177956d09976SNikolay Aleksandrov return false; 178056d09976SNikolay Aleksandrov 178156d09976SNikolay Aleksandrov br_vlan_get_stats(v, &stats); 178256d09976SNikolay Aleksandrov if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_BYTES, stats.rx_bytes, 178356d09976SNikolay Aleksandrov BRIDGE_VLANDB_STATS_PAD) || 178456d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_PACKETS, 178556d09976SNikolay Aleksandrov stats.rx_packets, BRIDGE_VLANDB_STATS_PAD) || 178656d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_BYTES, stats.tx_bytes, 178756d09976SNikolay Aleksandrov BRIDGE_VLANDB_STATS_PAD) || 178856d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_PACKETS, 178956d09976SNikolay Aleksandrov stats.tx_packets, BRIDGE_VLANDB_STATS_PAD)) 179056d09976SNikolay Aleksandrov goto out_err; 179156d09976SNikolay Aleksandrov 179256d09976SNikolay Aleksandrov nla_nest_end(skb, nest); 179356d09976SNikolay Aleksandrov 179456d09976SNikolay Aleksandrov return true; 179556d09976SNikolay Aleksandrov 179656d09976SNikolay Aleksandrov out_err: 179756d09976SNikolay Aleksandrov nla_nest_cancel(skb, nest); 179856d09976SNikolay Aleksandrov return false; 179956d09976SNikolay Aleksandrov } 180056d09976SNikolay Aleksandrov 18017a53e718SNikolay Aleksandrov /* v_opts is used to dump the options which must be equal in the whole range */ 18020ab55879SNikolay Aleksandrov static bool br_vlan_fill_vids(struct sk_buff *skb, u16 vid, u16 vid_range, 18037a53e718SNikolay Aleksandrov const struct net_bridge_vlan *v_opts, 180456d09976SNikolay Aleksandrov u16 flags, 180556d09976SNikolay Aleksandrov bool dump_stats) 18068dcea187SNikolay Aleksandrov { 18078dcea187SNikolay Aleksandrov struct bridge_vlan_info info; 18088dcea187SNikolay Aleksandrov struct nlattr *nest; 18098dcea187SNikolay Aleksandrov 18108dcea187SNikolay Aleksandrov nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY); 18118dcea187SNikolay Aleksandrov if (!nest) 18128dcea187SNikolay Aleksandrov return false; 18138dcea187SNikolay Aleksandrov 18148dcea187SNikolay Aleksandrov memset(&info, 0, sizeof(info)); 18158dcea187SNikolay Aleksandrov info.vid = vid; 18168dcea187SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 18178dcea187SNikolay Aleksandrov info.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 18188dcea187SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_PVID) 18198dcea187SNikolay Aleksandrov info.flags |= BRIDGE_VLAN_INFO_PVID; 18208dcea187SNikolay Aleksandrov 18218dcea187SNikolay Aleksandrov if (nla_put(skb, BRIDGE_VLANDB_ENTRY_INFO, sizeof(info), &info)) 18228dcea187SNikolay Aleksandrov goto out_err; 18238dcea187SNikolay Aleksandrov 18240ab55879SNikolay Aleksandrov if (vid_range && vid < vid_range && 18250ab55879SNikolay Aleksandrov !(flags & BRIDGE_VLAN_INFO_PVID) && 18260ab55879SNikolay Aleksandrov nla_put_u16(skb, BRIDGE_VLANDB_ENTRY_RANGE, vid_range)) 18270ab55879SNikolay Aleksandrov goto out_err; 18280ab55879SNikolay Aleksandrov 182956d09976SNikolay Aleksandrov if (v_opts) { 183056d09976SNikolay Aleksandrov if (!br_vlan_opts_fill(skb, v_opts)) 18317a53e718SNikolay Aleksandrov goto out_err; 18327a53e718SNikolay Aleksandrov 183356d09976SNikolay Aleksandrov if (dump_stats && !br_vlan_stats_fill(skb, v_opts)) 183456d09976SNikolay Aleksandrov goto out_err; 183556d09976SNikolay Aleksandrov } 183656d09976SNikolay Aleksandrov 18378dcea187SNikolay Aleksandrov nla_nest_end(skb, nest); 18388dcea187SNikolay Aleksandrov 18398dcea187SNikolay Aleksandrov return true; 18408dcea187SNikolay Aleksandrov 18418dcea187SNikolay Aleksandrov out_err: 18428dcea187SNikolay Aleksandrov nla_nest_cancel(skb, nest); 18438dcea187SNikolay Aleksandrov return false; 18448dcea187SNikolay Aleksandrov } 18458dcea187SNikolay Aleksandrov 1846cf5bddb9SNikolay Aleksandrov static size_t rtnl_vlan_nlmsg_size(void) 1847cf5bddb9SNikolay Aleksandrov { 1848cf5bddb9SNikolay Aleksandrov return NLMSG_ALIGN(sizeof(struct br_vlan_msg)) 1849cf5bddb9SNikolay Aleksandrov + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY */ 1850cf5bddb9SNikolay Aleksandrov + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_ENTRY_RANGE */ 18517a53e718SNikolay Aleksandrov + nla_total_size(sizeof(struct bridge_vlan_info)) /* BRIDGE_VLANDB_ENTRY_INFO */ 18527a53e718SNikolay Aleksandrov + br_vlan_opts_nl_size(); /* bridge vlan options */ 1853cf5bddb9SNikolay Aleksandrov } 1854cf5bddb9SNikolay Aleksandrov 1855cf5bddb9SNikolay Aleksandrov void br_vlan_notify(const struct net_bridge *br, 1856cf5bddb9SNikolay Aleksandrov const struct net_bridge_port *p, 1857cf5bddb9SNikolay Aleksandrov u16 vid, u16 vid_range, 1858cf5bddb9SNikolay Aleksandrov int cmd) 1859cf5bddb9SNikolay Aleksandrov { 1860cf5bddb9SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 18617a53e718SNikolay Aleksandrov struct net_bridge_vlan *v = NULL; 1862cf5bddb9SNikolay Aleksandrov struct br_vlan_msg *bvm; 1863cf5bddb9SNikolay Aleksandrov struct nlmsghdr *nlh; 1864cf5bddb9SNikolay Aleksandrov struct sk_buff *skb; 1865cf5bddb9SNikolay Aleksandrov int err = -ENOBUFS; 1866cf5bddb9SNikolay Aleksandrov struct net *net; 1867cf5bddb9SNikolay Aleksandrov u16 flags = 0; 1868cf5bddb9SNikolay Aleksandrov int ifindex; 1869cf5bddb9SNikolay Aleksandrov 1870cf5bddb9SNikolay Aleksandrov /* right now notifications are done only with rtnl held */ 1871cf5bddb9SNikolay Aleksandrov ASSERT_RTNL(); 1872cf5bddb9SNikolay Aleksandrov 1873cf5bddb9SNikolay Aleksandrov if (p) { 1874cf5bddb9SNikolay Aleksandrov ifindex = p->dev->ifindex; 1875cf5bddb9SNikolay Aleksandrov vg = nbp_vlan_group(p); 1876cf5bddb9SNikolay Aleksandrov net = dev_net(p->dev); 1877cf5bddb9SNikolay Aleksandrov } else { 1878cf5bddb9SNikolay Aleksandrov ifindex = br->dev->ifindex; 1879cf5bddb9SNikolay Aleksandrov vg = br_vlan_group(br); 1880cf5bddb9SNikolay Aleksandrov net = dev_net(br->dev); 1881cf5bddb9SNikolay Aleksandrov } 1882cf5bddb9SNikolay Aleksandrov 1883cf5bddb9SNikolay Aleksandrov skb = nlmsg_new(rtnl_vlan_nlmsg_size(), GFP_KERNEL); 1884cf5bddb9SNikolay Aleksandrov if (!skb) 1885cf5bddb9SNikolay Aleksandrov goto out_err; 1886cf5bddb9SNikolay Aleksandrov 1887cf5bddb9SNikolay Aleksandrov err = -EMSGSIZE; 1888cf5bddb9SNikolay Aleksandrov nlh = nlmsg_put(skb, 0, 0, cmd, sizeof(*bvm), 0); 1889cf5bddb9SNikolay Aleksandrov if (!nlh) 1890cf5bddb9SNikolay Aleksandrov goto out_err; 1891cf5bddb9SNikolay Aleksandrov bvm = nlmsg_data(nlh); 1892cf5bddb9SNikolay Aleksandrov memset(bvm, 0, sizeof(*bvm)); 1893cf5bddb9SNikolay Aleksandrov bvm->family = AF_BRIDGE; 1894cf5bddb9SNikolay Aleksandrov bvm->ifindex = ifindex; 1895cf5bddb9SNikolay Aleksandrov 1896cf5bddb9SNikolay Aleksandrov switch (cmd) { 1897cf5bddb9SNikolay Aleksandrov case RTM_NEWVLAN: 1898cf5bddb9SNikolay Aleksandrov /* need to find the vlan due to flags/options */ 1899cf5bddb9SNikolay Aleksandrov v = br_vlan_find(vg, vid); 1900cf5bddb9SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 1901cf5bddb9SNikolay Aleksandrov goto out_kfree; 1902cf5bddb9SNikolay Aleksandrov 1903cf5bddb9SNikolay Aleksandrov flags = v->flags; 1904cf5bddb9SNikolay Aleksandrov if (br_get_pvid(vg) == v->vid) 1905cf5bddb9SNikolay Aleksandrov flags |= BRIDGE_VLAN_INFO_PVID; 1906cf5bddb9SNikolay Aleksandrov break; 1907cf5bddb9SNikolay Aleksandrov case RTM_DELVLAN: 1908cf5bddb9SNikolay Aleksandrov break; 1909cf5bddb9SNikolay Aleksandrov default: 1910cf5bddb9SNikolay Aleksandrov goto out_kfree; 1911cf5bddb9SNikolay Aleksandrov } 1912cf5bddb9SNikolay Aleksandrov 191356d09976SNikolay Aleksandrov if (!br_vlan_fill_vids(skb, vid, vid_range, v, flags, false)) 1914cf5bddb9SNikolay Aleksandrov goto out_err; 1915cf5bddb9SNikolay Aleksandrov 1916cf5bddb9SNikolay Aleksandrov nlmsg_end(skb, nlh); 1917cf5bddb9SNikolay Aleksandrov rtnl_notify(skb, net, 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL); 1918cf5bddb9SNikolay Aleksandrov return; 1919cf5bddb9SNikolay Aleksandrov 1920cf5bddb9SNikolay Aleksandrov out_err: 1921cf5bddb9SNikolay Aleksandrov rtnl_set_sk_err(net, RTNLGRP_BRVLAN, err); 1922cf5bddb9SNikolay Aleksandrov out_kfree: 1923cf5bddb9SNikolay Aleksandrov kfree_skb(skb); 1924cf5bddb9SNikolay Aleksandrov } 1925cf5bddb9SNikolay Aleksandrov 19260ab55879SNikolay Aleksandrov /* check if v_curr can enter a range ending in range_end */ 1927a5d29ae2SNikolay Aleksandrov bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 19280ab55879SNikolay Aleksandrov const struct net_bridge_vlan *range_end) 19290ab55879SNikolay Aleksandrov { 19300ab55879SNikolay Aleksandrov return v_curr->vid - range_end->vid == 1 && 19317a53e718SNikolay Aleksandrov range_end->flags == v_curr->flags && 193299f7c5e0SNikolay Aleksandrov br_vlan_opts_eq_range(v_curr, range_end); 19330ab55879SNikolay Aleksandrov } 19340ab55879SNikolay Aleksandrov 19358dcea187SNikolay Aleksandrov static int br_vlan_dump_dev(const struct net_device *dev, 19368dcea187SNikolay Aleksandrov struct sk_buff *skb, 193756d09976SNikolay Aleksandrov struct netlink_callback *cb, 193856d09976SNikolay Aleksandrov u32 dump_flags) 19398dcea187SNikolay Aleksandrov { 19400ab55879SNikolay Aleksandrov struct net_bridge_vlan *v, *range_start = NULL, *range_end = NULL; 1941743a53d9SNikolay Aleksandrov bool dump_global = !!(dump_flags & BRIDGE_VLANDB_DUMPF_GLOBAL); 194256d09976SNikolay Aleksandrov bool dump_stats = !!(dump_flags & BRIDGE_VLANDB_DUMPF_STATS); 19438dcea187SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 19448dcea187SNikolay Aleksandrov int idx = 0, s_idx = cb->args[1]; 19458dcea187SNikolay Aleksandrov struct nlmsghdr *nlh = NULL; 19468dcea187SNikolay Aleksandrov struct net_bridge_port *p; 19478dcea187SNikolay Aleksandrov struct br_vlan_msg *bvm; 19488dcea187SNikolay Aleksandrov struct net_bridge *br; 19498dcea187SNikolay Aleksandrov int err = 0; 19508dcea187SNikolay Aleksandrov u16 pvid; 19518dcea187SNikolay Aleksandrov 19528dcea187SNikolay Aleksandrov if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) 19538dcea187SNikolay Aleksandrov return -EINVAL; 19548dcea187SNikolay Aleksandrov 19558dcea187SNikolay Aleksandrov if (netif_is_bridge_master(dev)) { 19568dcea187SNikolay Aleksandrov br = netdev_priv(dev); 19578dcea187SNikolay Aleksandrov vg = br_vlan_group_rcu(br); 19588dcea187SNikolay Aleksandrov p = NULL; 19598dcea187SNikolay Aleksandrov } else { 1960743a53d9SNikolay Aleksandrov /* global options are dumped only for bridge devices */ 1961743a53d9SNikolay Aleksandrov if (dump_global) 1962743a53d9SNikolay Aleksandrov return 0; 1963743a53d9SNikolay Aleksandrov 19648dcea187SNikolay Aleksandrov p = br_port_get_rcu(dev); 19658dcea187SNikolay Aleksandrov if (WARN_ON(!p)) 19668dcea187SNikolay Aleksandrov return -EINVAL; 19678dcea187SNikolay Aleksandrov vg = nbp_vlan_group_rcu(p); 19688dcea187SNikolay Aleksandrov br = p->br; 19698dcea187SNikolay Aleksandrov } 19708dcea187SNikolay Aleksandrov 19718dcea187SNikolay Aleksandrov if (!vg) 19728dcea187SNikolay Aleksandrov return 0; 19738dcea187SNikolay Aleksandrov 19748dcea187SNikolay Aleksandrov nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 19758dcea187SNikolay Aleksandrov RTM_NEWVLAN, sizeof(*bvm), NLM_F_MULTI); 19768dcea187SNikolay Aleksandrov if (!nlh) 19778dcea187SNikolay Aleksandrov return -EMSGSIZE; 19788dcea187SNikolay Aleksandrov bvm = nlmsg_data(nlh); 19798dcea187SNikolay Aleksandrov memset(bvm, 0, sizeof(*bvm)); 19808dcea187SNikolay Aleksandrov bvm->family = PF_BRIDGE; 19818dcea187SNikolay Aleksandrov bvm->ifindex = dev->ifindex; 19828dcea187SNikolay Aleksandrov pvid = br_get_pvid(vg); 19838dcea187SNikolay Aleksandrov 19840ab55879SNikolay Aleksandrov /* idx must stay at range's beginning until it is filled in */ 19858dcea187SNikolay Aleksandrov list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 1986743a53d9SNikolay Aleksandrov if (!dump_global && !br_vlan_should_use(v)) 19878dcea187SNikolay Aleksandrov continue; 19880ab55879SNikolay Aleksandrov if (idx < s_idx) { 19890ab55879SNikolay Aleksandrov idx++; 19900ab55879SNikolay Aleksandrov continue; 19910ab55879SNikolay Aleksandrov } 19920ab55879SNikolay Aleksandrov 19930ab55879SNikolay Aleksandrov if (!range_start) { 19940ab55879SNikolay Aleksandrov range_start = v; 19950ab55879SNikolay Aleksandrov range_end = v; 19960ab55879SNikolay Aleksandrov continue; 19970ab55879SNikolay Aleksandrov } 19980ab55879SNikolay Aleksandrov 1999743a53d9SNikolay Aleksandrov if (dump_global) { 2000743a53d9SNikolay Aleksandrov if (br_vlan_global_opts_can_enter_range(v, range_end)) 20016c4110d9SNikolay Aleksandrov goto update_end; 2002743a53d9SNikolay Aleksandrov if (!br_vlan_global_opts_fill(skb, range_start->vid, 2003743a53d9SNikolay Aleksandrov range_end->vid, 2004743a53d9SNikolay Aleksandrov range_start)) { 2005743a53d9SNikolay Aleksandrov err = -EMSGSIZE; 2006743a53d9SNikolay Aleksandrov break; 2007743a53d9SNikolay Aleksandrov } 2008743a53d9SNikolay Aleksandrov /* advance number of filled vlans */ 2009743a53d9SNikolay Aleksandrov idx += range_end->vid - range_start->vid + 1; 2010743a53d9SNikolay Aleksandrov 2011743a53d9SNikolay Aleksandrov range_start = v; 2012743a53d9SNikolay Aleksandrov } else if (dump_stats || v->vid == pvid || 201356d09976SNikolay Aleksandrov !br_vlan_can_enter_range(v, range_end)) { 201456d09976SNikolay Aleksandrov u16 vlan_flags = br_vlan_flags(range_start, pvid); 20150ab55879SNikolay Aleksandrov 20160ab55879SNikolay Aleksandrov if (!br_vlan_fill_vids(skb, range_start->vid, 20177a53e718SNikolay Aleksandrov range_end->vid, range_start, 201856d09976SNikolay Aleksandrov vlan_flags, dump_stats)) { 20198dcea187SNikolay Aleksandrov err = -EMSGSIZE; 20208dcea187SNikolay Aleksandrov break; 20218dcea187SNikolay Aleksandrov } 20220ab55879SNikolay Aleksandrov /* advance number of filled vlans */ 20230ab55879SNikolay Aleksandrov idx += range_end->vid - range_start->vid + 1; 20240ab55879SNikolay Aleksandrov 20250ab55879SNikolay Aleksandrov range_start = v; 20268dcea187SNikolay Aleksandrov } 20276c4110d9SNikolay Aleksandrov update_end: 20280ab55879SNikolay Aleksandrov range_end = v; 20290ab55879SNikolay Aleksandrov } 20300ab55879SNikolay Aleksandrov 20310ab55879SNikolay Aleksandrov /* err will be 0 and range_start will be set in 3 cases here: 20320ab55879SNikolay Aleksandrov * - first vlan (range_start == range_end) 20330ab55879SNikolay Aleksandrov * - last vlan (range_start == range_end, not in range) 20340ab55879SNikolay Aleksandrov * - last vlan range (range_start != range_end, in range) 20350ab55879SNikolay Aleksandrov */ 2036743a53d9SNikolay Aleksandrov if (!err && range_start) { 2037743a53d9SNikolay Aleksandrov if (dump_global && 2038743a53d9SNikolay Aleksandrov !br_vlan_global_opts_fill(skb, range_start->vid, 2039743a53d9SNikolay Aleksandrov range_end->vid, range_start)) 2040743a53d9SNikolay Aleksandrov err = -EMSGSIZE; 2041743a53d9SNikolay Aleksandrov else if (!dump_global && 2042743a53d9SNikolay Aleksandrov !br_vlan_fill_vids(skb, range_start->vid, 2043743a53d9SNikolay Aleksandrov range_end->vid, range_start, 2044743a53d9SNikolay Aleksandrov br_vlan_flags(range_start, pvid), 204556d09976SNikolay Aleksandrov dump_stats)) 20460ab55879SNikolay Aleksandrov err = -EMSGSIZE; 2047743a53d9SNikolay Aleksandrov } 20480ab55879SNikolay Aleksandrov 20490ab55879SNikolay Aleksandrov cb->args[1] = err ? idx : 0; 20500ab55879SNikolay Aleksandrov 20518dcea187SNikolay Aleksandrov nlmsg_end(skb, nlh); 20528dcea187SNikolay Aleksandrov 20538dcea187SNikolay Aleksandrov return err; 20548dcea187SNikolay Aleksandrov } 20558dcea187SNikolay Aleksandrov 205656d09976SNikolay Aleksandrov static const struct nla_policy br_vlan_db_dump_pol[BRIDGE_VLANDB_DUMP_MAX + 1] = { 205756d09976SNikolay Aleksandrov [BRIDGE_VLANDB_DUMP_FLAGS] = { .type = NLA_U32 }, 205856d09976SNikolay Aleksandrov }; 205956d09976SNikolay Aleksandrov 20608dcea187SNikolay Aleksandrov static int br_vlan_rtm_dump(struct sk_buff *skb, struct netlink_callback *cb) 20618dcea187SNikolay Aleksandrov { 206256d09976SNikolay Aleksandrov struct nlattr *dtb[BRIDGE_VLANDB_DUMP_MAX + 1]; 20638dcea187SNikolay Aleksandrov int idx = 0, err = 0, s_idx = cb->args[0]; 20648dcea187SNikolay Aleksandrov struct net *net = sock_net(skb->sk); 20658dcea187SNikolay Aleksandrov struct br_vlan_msg *bvm; 20668dcea187SNikolay Aleksandrov struct net_device *dev; 206756d09976SNikolay Aleksandrov u32 dump_flags = 0; 20688dcea187SNikolay Aleksandrov 206956d09976SNikolay Aleksandrov err = nlmsg_parse(cb->nlh, sizeof(*bvm), dtb, BRIDGE_VLANDB_DUMP_MAX, 207056d09976SNikolay Aleksandrov br_vlan_db_dump_pol, cb->extack); 20718dcea187SNikolay Aleksandrov if (err < 0) 20728dcea187SNikolay Aleksandrov return err; 20738dcea187SNikolay Aleksandrov 20748dcea187SNikolay Aleksandrov bvm = nlmsg_data(cb->nlh); 207556d09976SNikolay Aleksandrov if (dtb[BRIDGE_VLANDB_DUMP_FLAGS]) 207656d09976SNikolay Aleksandrov dump_flags = nla_get_u32(dtb[BRIDGE_VLANDB_DUMP_FLAGS]); 20778dcea187SNikolay Aleksandrov 20788dcea187SNikolay Aleksandrov rcu_read_lock(); 20798dcea187SNikolay Aleksandrov if (bvm->ifindex) { 20808dcea187SNikolay Aleksandrov dev = dev_get_by_index_rcu(net, bvm->ifindex); 20818dcea187SNikolay Aleksandrov if (!dev) { 20828dcea187SNikolay Aleksandrov err = -ENODEV; 20838dcea187SNikolay Aleksandrov goto out_err; 20848dcea187SNikolay Aleksandrov } 208556d09976SNikolay Aleksandrov err = br_vlan_dump_dev(dev, skb, cb, dump_flags); 2086dcb2c5c6SNikolay Aleksandrov /* if the dump completed without an error we return 0 here */ 2087dcb2c5c6SNikolay Aleksandrov if (err != -EMSGSIZE) 20888dcea187SNikolay Aleksandrov goto out_err; 20898dcea187SNikolay Aleksandrov } else { 20908dcea187SNikolay Aleksandrov for_each_netdev_rcu(net, dev) { 20918dcea187SNikolay Aleksandrov if (idx < s_idx) 20928dcea187SNikolay Aleksandrov goto skip; 20938dcea187SNikolay Aleksandrov 209456d09976SNikolay Aleksandrov err = br_vlan_dump_dev(dev, skb, cb, dump_flags); 20958dcea187SNikolay Aleksandrov if (err == -EMSGSIZE) 20968dcea187SNikolay Aleksandrov break; 20978dcea187SNikolay Aleksandrov skip: 20988dcea187SNikolay Aleksandrov idx++; 20998dcea187SNikolay Aleksandrov } 21008dcea187SNikolay Aleksandrov } 21018dcea187SNikolay Aleksandrov cb->args[0] = idx; 21028dcea187SNikolay Aleksandrov rcu_read_unlock(); 21038dcea187SNikolay Aleksandrov 21048dcea187SNikolay Aleksandrov return skb->len; 21058dcea187SNikolay Aleksandrov 21068dcea187SNikolay Aleksandrov out_err: 21078dcea187SNikolay Aleksandrov rcu_read_unlock(); 21088dcea187SNikolay Aleksandrov 21098dcea187SNikolay Aleksandrov return err; 21108dcea187SNikolay Aleksandrov } 21118dcea187SNikolay Aleksandrov 2112f26b2965SNikolay Aleksandrov static const struct nla_policy br_vlan_db_policy[BRIDGE_VLANDB_ENTRY_MAX + 1] = { 21138140860cSJohannes Berg [BRIDGE_VLANDB_ENTRY_INFO] = 21148140860cSJohannes Berg NLA_POLICY_EXACT_LEN(sizeof(struct bridge_vlan_info)), 21150ab55879SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_RANGE] = { .type = NLA_U16 }, 2116a580c76dSNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_STATE] = { .type = NLA_U8 }, 2117fa388f29SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_TUNNEL_INFO] = { .type = NLA_NESTED }, 21182796d846SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_MCAST_ROUTER] = { .type = NLA_U8 }, 2119f26b2965SNikolay Aleksandrov }; 2120f26b2965SNikolay Aleksandrov 2121f26b2965SNikolay Aleksandrov static int br_vlan_rtm_process_one(struct net_device *dev, 2122f26b2965SNikolay Aleksandrov const struct nlattr *attr, 2123f26b2965SNikolay Aleksandrov int cmd, struct netlink_ext_ack *extack) 2124f26b2965SNikolay Aleksandrov { 21250ab55879SNikolay Aleksandrov struct bridge_vlan_info *vinfo, vrange_end, *vinfo_last = NULL; 2126f26b2965SNikolay Aleksandrov struct nlattr *tb[BRIDGE_VLANDB_ENTRY_MAX + 1]; 2127a5d29ae2SNikolay Aleksandrov bool changed = false, skip_processing = false; 2128f26b2965SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2129f26b2965SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2130f26b2965SNikolay Aleksandrov int err = 0, cmdmap = 0; 2131f26b2965SNikolay Aleksandrov struct net_bridge *br; 2132f26b2965SNikolay Aleksandrov 2133f26b2965SNikolay Aleksandrov if (netif_is_bridge_master(dev)) { 2134f26b2965SNikolay Aleksandrov br = netdev_priv(dev); 2135f26b2965SNikolay Aleksandrov vg = br_vlan_group(br); 2136f26b2965SNikolay Aleksandrov } else { 2137f26b2965SNikolay Aleksandrov p = br_port_get_rtnl(dev); 2138f26b2965SNikolay Aleksandrov if (WARN_ON(!p)) 2139f26b2965SNikolay Aleksandrov return -ENODEV; 2140f26b2965SNikolay Aleksandrov br = p->br; 2141f26b2965SNikolay Aleksandrov vg = nbp_vlan_group(p); 2142f26b2965SNikolay Aleksandrov } 2143f26b2965SNikolay Aleksandrov 2144f26b2965SNikolay Aleksandrov if (WARN_ON(!vg)) 2145f26b2965SNikolay Aleksandrov return -ENODEV; 2146f26b2965SNikolay Aleksandrov 2147f26b2965SNikolay Aleksandrov err = nla_parse_nested(tb, BRIDGE_VLANDB_ENTRY_MAX, attr, 2148f26b2965SNikolay Aleksandrov br_vlan_db_policy, extack); 2149f26b2965SNikolay Aleksandrov if (err) 2150f26b2965SNikolay Aleksandrov return err; 2151f26b2965SNikolay Aleksandrov 2152f26b2965SNikolay Aleksandrov if (!tb[BRIDGE_VLANDB_ENTRY_INFO]) { 2153f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry info"); 2154f26b2965SNikolay Aleksandrov return -EINVAL; 2155f26b2965SNikolay Aleksandrov } 21560ab55879SNikolay Aleksandrov memset(&vrange_end, 0, sizeof(vrange_end)); 2157f26b2965SNikolay Aleksandrov 2158f26b2965SNikolay Aleksandrov vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]); 2159f26b2965SNikolay Aleksandrov if (vinfo->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 2160f26b2965SNikolay Aleksandrov BRIDGE_VLAN_INFO_RANGE_END)) { 2161f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "Old-style vlan ranges are not allowed when using RTM vlan calls"); 2162f26b2965SNikolay Aleksandrov return -EINVAL; 2163f26b2965SNikolay Aleksandrov } 2164f26b2965SNikolay Aleksandrov if (!br_vlan_valid_id(vinfo->vid, extack)) 2165f26b2965SNikolay Aleksandrov return -EINVAL; 2166f26b2965SNikolay Aleksandrov 21670ab55879SNikolay Aleksandrov if (tb[BRIDGE_VLANDB_ENTRY_RANGE]) { 21680ab55879SNikolay Aleksandrov vrange_end.vid = nla_get_u16(tb[BRIDGE_VLANDB_ENTRY_RANGE]); 21690ab55879SNikolay Aleksandrov /* validate user-provided flags without RANGE_BEGIN */ 21700ab55879SNikolay Aleksandrov vrange_end.flags = BRIDGE_VLAN_INFO_RANGE_END | vinfo->flags; 21710ab55879SNikolay Aleksandrov vinfo->flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; 21720ab55879SNikolay Aleksandrov 21730ab55879SNikolay Aleksandrov /* vinfo_last is the range start, vinfo the range end */ 21740ab55879SNikolay Aleksandrov vinfo_last = vinfo; 21750ab55879SNikolay Aleksandrov vinfo = &vrange_end; 21760ab55879SNikolay Aleksandrov 21770ab55879SNikolay Aleksandrov if (!br_vlan_valid_id(vinfo->vid, extack) || 21780ab55879SNikolay Aleksandrov !br_vlan_valid_range(vinfo, vinfo_last, extack)) 21790ab55879SNikolay Aleksandrov return -EINVAL; 21800ab55879SNikolay Aleksandrov } 21810ab55879SNikolay Aleksandrov 2182f26b2965SNikolay Aleksandrov switch (cmd) { 2183f26b2965SNikolay Aleksandrov case RTM_NEWVLAN: 2184f26b2965SNikolay Aleksandrov cmdmap = RTM_SETLINK; 2185a5d29ae2SNikolay Aleksandrov skip_processing = !!(vinfo->flags & BRIDGE_VLAN_INFO_ONLY_OPTS); 2186f26b2965SNikolay Aleksandrov break; 2187adb3ce9bSNikolay Aleksandrov case RTM_DELVLAN: 2188adb3ce9bSNikolay Aleksandrov cmdmap = RTM_DELLINK; 2189adb3ce9bSNikolay Aleksandrov break; 2190f26b2965SNikolay Aleksandrov } 2191f26b2965SNikolay Aleksandrov 2192a5d29ae2SNikolay Aleksandrov if (!skip_processing) { 2193a5d29ae2SNikolay Aleksandrov struct bridge_vlan_info *tmp_last = vinfo_last; 2194a5d29ae2SNikolay Aleksandrov 2195a5d29ae2SNikolay Aleksandrov /* br_process_vlan_info may overwrite vinfo_last */ 2196a5d29ae2SNikolay Aleksandrov err = br_process_vlan_info(br, p, cmdmap, vinfo, &tmp_last, 2197a5d29ae2SNikolay Aleksandrov &changed, extack); 2198a5d29ae2SNikolay Aleksandrov 2199a5d29ae2SNikolay Aleksandrov /* notify first if anything changed */ 2200f26b2965SNikolay Aleksandrov if (changed) 2201f26b2965SNikolay Aleksandrov br_ifinfo_notify(cmdmap, br, p); 2202f26b2965SNikolay Aleksandrov 2203a5d29ae2SNikolay Aleksandrov if (err) 2204a5d29ae2SNikolay Aleksandrov return err; 2205a5d29ae2SNikolay Aleksandrov } 2206a5d29ae2SNikolay Aleksandrov 2207a5d29ae2SNikolay Aleksandrov /* deal with options */ 2208a5d29ae2SNikolay Aleksandrov if (cmd == RTM_NEWVLAN) { 2209a5d29ae2SNikolay Aleksandrov struct net_bridge_vlan *range_start, *range_end; 2210a5d29ae2SNikolay Aleksandrov 2211a5d29ae2SNikolay Aleksandrov if (vinfo_last) { 2212a5d29ae2SNikolay Aleksandrov range_start = br_vlan_find(vg, vinfo_last->vid); 2213a5d29ae2SNikolay Aleksandrov range_end = br_vlan_find(vg, vinfo->vid); 2214a5d29ae2SNikolay Aleksandrov } else { 2215a5d29ae2SNikolay Aleksandrov range_start = br_vlan_find(vg, vinfo->vid); 2216a5d29ae2SNikolay Aleksandrov range_end = range_start; 2217a5d29ae2SNikolay Aleksandrov } 2218a5d29ae2SNikolay Aleksandrov 2219a5d29ae2SNikolay Aleksandrov err = br_vlan_process_options(br, p, range_start, range_end, 2220a5d29ae2SNikolay Aleksandrov tb, extack); 2221a5d29ae2SNikolay Aleksandrov } 2222a5d29ae2SNikolay Aleksandrov 2223f26b2965SNikolay Aleksandrov return err; 2224f26b2965SNikolay Aleksandrov } 2225f26b2965SNikolay Aleksandrov 2226f26b2965SNikolay Aleksandrov static int br_vlan_rtm_process(struct sk_buff *skb, struct nlmsghdr *nlh, 2227f26b2965SNikolay Aleksandrov struct netlink_ext_ack *extack) 2228f26b2965SNikolay Aleksandrov { 2229f26b2965SNikolay Aleksandrov struct net *net = sock_net(skb->sk); 2230f26b2965SNikolay Aleksandrov struct br_vlan_msg *bvm; 2231f26b2965SNikolay Aleksandrov struct net_device *dev; 2232f26b2965SNikolay Aleksandrov struct nlattr *attr; 2233f26b2965SNikolay Aleksandrov int err, vlans = 0; 2234f26b2965SNikolay Aleksandrov int rem; 2235f26b2965SNikolay Aleksandrov 2236f26b2965SNikolay Aleksandrov /* this should validate the header and check for remaining bytes */ 2237f26b2965SNikolay Aleksandrov err = nlmsg_parse(nlh, sizeof(*bvm), NULL, BRIDGE_VLANDB_MAX, NULL, 2238f26b2965SNikolay Aleksandrov extack); 2239f26b2965SNikolay Aleksandrov if (err < 0) 2240f26b2965SNikolay Aleksandrov return err; 2241f26b2965SNikolay Aleksandrov 2242f26b2965SNikolay Aleksandrov bvm = nlmsg_data(nlh); 2243f26b2965SNikolay Aleksandrov dev = __dev_get_by_index(net, bvm->ifindex); 2244f26b2965SNikolay Aleksandrov if (!dev) 2245f26b2965SNikolay Aleksandrov return -ENODEV; 2246f26b2965SNikolay Aleksandrov 2247f26b2965SNikolay Aleksandrov if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) { 2248f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "The device is not a valid bridge or bridge port"); 2249f26b2965SNikolay Aleksandrov return -EINVAL; 2250f26b2965SNikolay Aleksandrov } 2251f26b2965SNikolay Aleksandrov 2252f26b2965SNikolay Aleksandrov nlmsg_for_each_attr(attr, nlh, sizeof(*bvm), rem) { 225347ecd2dbSNikolay Aleksandrov switch (nla_type(attr)) { 225447ecd2dbSNikolay Aleksandrov case BRIDGE_VLANDB_ENTRY: 225547ecd2dbSNikolay Aleksandrov err = br_vlan_rtm_process_one(dev, attr, 225647ecd2dbSNikolay Aleksandrov nlh->nlmsg_type, 225747ecd2dbSNikolay Aleksandrov extack); 225847ecd2dbSNikolay Aleksandrov break; 225947ecd2dbSNikolay Aleksandrov case BRIDGE_VLANDB_GLOBAL_OPTIONS: 226047ecd2dbSNikolay Aleksandrov err = br_vlan_rtm_process_global_options(dev, attr, 226147ecd2dbSNikolay Aleksandrov nlh->nlmsg_type, 226247ecd2dbSNikolay Aleksandrov extack); 226347ecd2dbSNikolay Aleksandrov break; 226447ecd2dbSNikolay Aleksandrov default: 2265f26b2965SNikolay Aleksandrov continue; 226647ecd2dbSNikolay Aleksandrov } 2267f26b2965SNikolay Aleksandrov 2268f26b2965SNikolay Aleksandrov vlans++; 2269f26b2965SNikolay Aleksandrov if (err) 2270f26b2965SNikolay Aleksandrov break; 2271f26b2965SNikolay Aleksandrov } 2272f26b2965SNikolay Aleksandrov if (!vlans) { 2273f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "No vlans found to process"); 2274f26b2965SNikolay Aleksandrov err = -EINVAL; 2275f26b2965SNikolay Aleksandrov } 2276f26b2965SNikolay Aleksandrov 2277f26b2965SNikolay Aleksandrov return err; 2278f26b2965SNikolay Aleksandrov } 2279f26b2965SNikolay Aleksandrov 22808dcea187SNikolay Aleksandrov void br_vlan_rtnl_init(void) 22818dcea187SNikolay Aleksandrov { 22828dcea187SNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_GETVLAN, NULL, 22838dcea187SNikolay Aleksandrov br_vlan_rtm_dump, 0); 2284f26b2965SNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_NEWVLAN, 2285f26b2965SNikolay Aleksandrov br_vlan_rtm_process, NULL, 0); 2286adb3ce9bSNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_DELVLAN, 2287adb3ce9bSNikolay Aleksandrov br_vlan_rtm_process, NULL, 0); 22888dcea187SNikolay Aleksandrov } 22898dcea187SNikolay Aleksandrov 22908dcea187SNikolay Aleksandrov void br_vlan_rtnl_uninit(void) 22918dcea187SNikolay Aleksandrov { 22928dcea187SNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_GETVLAN); 2293f26b2965SNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_NEWVLAN); 2294adb3ce9bSNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_DELVLAN); 22958dcea187SNikolay Aleksandrov } 2296