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 */ 112*8d23a54fSVladimir 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 2292594e906SNikolay Aleksandrov /* This is the shared VLAN add function which works for both ports and bridge 2302594e906SNikolay Aleksandrov * devices. There are four possible calls to this function in terms of the 2312594e906SNikolay Aleksandrov * vlan entry type: 2322594e906SNikolay Aleksandrov * 1. vlan is being added on a port (no master flags, global entry exists) 233ddd611d3SIdo Schimmel * 2. vlan is being added on a bridge (both master and brentry flags) 2342594e906SNikolay Aleksandrov * 3. vlan is being added on a port, but a global entry didn't exist which 235ddd611d3SIdo Schimmel * is being created right now (master flag set, brentry flag unset), the 2362594e906SNikolay Aleksandrov * global entry is used for global per-vlan features, but not for filtering 237ddd611d3SIdo Schimmel * 4. same as 3 but with both master and brentry flags set so the entry 2382594e906SNikolay Aleksandrov * will be used for filtering in both the port and the bridge 2392594e906SNikolay Aleksandrov */ 240169327d5SPetr Machata static int __vlan_add(struct net_bridge_vlan *v, u16 flags, 241169327d5SPetr Machata struct netlink_ext_ack *extack) 242243a2e63SVlad Yasevich { 2432594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = NULL; 2442594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2456be144f6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2462594e906SNikolay Aleksandrov struct net_device *dev; 2472594e906SNikolay Aleksandrov struct net_bridge *br; 248bf361ad3SVivien Didelot int err; 249bf361ad3SVivien Didelot 2502594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 2512594e906SNikolay Aleksandrov br = v->br; 2522594e906SNikolay Aleksandrov dev = br->dev; 253907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 2542594e906SNikolay Aleksandrov } else { 2552594e906SNikolay Aleksandrov p = v->port; 2562594e906SNikolay Aleksandrov br = p->br; 2572594e906SNikolay Aleksandrov dev = p->dev; 258907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 2592594e906SNikolay Aleksandrov } 2602594e906SNikolay Aleksandrov 2612594e906SNikolay Aleksandrov if (p) { 2622594e906SNikolay Aleksandrov /* Add VLAN to the device filter if it is supported. 2632594e906SNikolay Aleksandrov * This ensures tagged traffic enters the bridge when 2642594e906SNikolay Aleksandrov * promiscuous mode is disabled by br_manage_promisc(). 2652594e906SNikolay Aleksandrov */ 26627973793SIdo Schimmel err = __vlan_vid_add(dev, br, v, flags, extack); 267bf361ad3SVivien Didelot if (err) 2682594e906SNikolay Aleksandrov goto out; 2692594e906SNikolay Aleksandrov 2702594e906SNikolay Aleksandrov /* need to work on the master vlan too */ 2712594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_MASTER) { 272f418af63SNikolay Aleksandrov bool changed; 273f418af63SNikolay Aleksandrov 274f418af63SNikolay Aleksandrov err = br_vlan_add(br, v->vid, 275f418af63SNikolay Aleksandrov flags | BRIDGE_VLAN_INFO_BRENTRY, 276169327d5SPetr Machata &changed, extack); 2772594e906SNikolay Aleksandrov if (err) 2782594e906SNikolay Aleksandrov goto out_filt; 279f545923bSNikolay Aleksandrov 280f545923bSNikolay Aleksandrov if (changed) 281f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, v->vid, 0, 282f545923bSNikolay Aleksandrov RTM_NEWVLAN); 2832594e906SNikolay Aleksandrov } 2842594e906SNikolay Aleksandrov 285169327d5SPetr Machata masterv = br_vlan_get_master(br, v->vid, extack); 286ee4f52a8SZhang Changzhong if (!masterv) { 287ee4f52a8SZhang Changzhong err = -ENOMEM; 2882594e906SNikolay Aleksandrov goto out_filt; 289ee4f52a8SZhang Changzhong } 2902594e906SNikolay Aleksandrov v->brvlan = masterv; 2919163a0fcSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)) { 292281cc284SHeiner Kallweit v->stats = 293281cc284SHeiner Kallweit netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 2949163a0fcSNikolay Aleksandrov if (!v->stats) { 2959163a0fcSNikolay Aleksandrov err = -ENOMEM; 2969163a0fcSNikolay Aleksandrov goto out_filt; 2979163a0fcSNikolay Aleksandrov } 2989d332e69SNikolay Aleksandrov v->priv_flags |= BR_VLFLAG_PER_PORT_STATS; 2999163a0fcSNikolay Aleksandrov } else { 3006dada9b1SNikolay Aleksandrov v->stats = masterv->stats; 3019163a0fcSNikolay Aleksandrov } 302613d61dbSNikolay Aleksandrov br_multicast_port_ctx_init(p, v, &v->port_mcast_ctx); 3039c86ce2cSPetr Machata } else { 3043116ad06SVladimir Oltean if (br_vlan_should_use(v)) { 3053116ad06SVladimir Oltean err = br_switchdev_port_vlan_add(dev, v->vid, flags, 306*8d23a54fSVladimir Oltean false, extack); 3079c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 3089c86ce2cSPetr Machata goto out; 3093116ad06SVladimir Oltean } 310613d61dbSNikolay Aleksandrov br_multicast_ctx_init(br, v, &v->br_mcast_ctx); 3117b54aaafSNikolay Aleksandrov v->priv_flags |= BR_VLFLAG_GLOBAL_MCAST_ENABLED; 3122594e906SNikolay Aleksandrov } 3132594e906SNikolay Aleksandrov 3146be144f6SNikolay Aleksandrov /* Add the dev mac and count the vlan only if it's usable */ 3152594e906SNikolay Aleksandrov if (br_vlan_should_use(v)) { 316f6814fdcSVladimir Oltean err = br_fdb_add_local(br, p, dev->dev_addr, v->vid); 3172594e906SNikolay Aleksandrov if (err) { 3182594e906SNikolay Aleksandrov br_err(br, "failed insert local address into bridge forwarding table\n"); 3192594e906SNikolay Aleksandrov goto out_filt; 3202594e906SNikolay Aleksandrov } 3216be144f6SNikolay Aleksandrov vg->num_vlans++; 3222594e906SNikolay Aleksandrov } 3232594e906SNikolay Aleksandrov 324a580c76dSNikolay Aleksandrov /* set the state before publishing */ 325a580c76dSNikolay Aleksandrov v->state = BR_STATE_FORWARDING; 326a580c76dSNikolay Aleksandrov 3276be144f6SNikolay Aleksandrov err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode, 3286be144f6SNikolay Aleksandrov br_vlan_rht_params); 3292594e906SNikolay Aleksandrov if (err) 3302594e906SNikolay Aleksandrov goto out_fdb_insert; 3312594e906SNikolay Aleksandrov 3322594e906SNikolay Aleksandrov __vlan_add_list(v); 33327c5f74cSVladimir Oltean __vlan_flags_commit(v, flags); 3347b54aaafSNikolay Aleksandrov br_multicast_toggle_one_vlan(v, true); 33580900acdSMike Manning 33680900acdSMike Manning if (p) 33780900acdSMike Manning nbp_vlan_set_vlan_dev_state(p, v->vid); 3382594e906SNikolay Aleksandrov out: 3392594e906SNikolay Aleksandrov return err; 3402594e906SNikolay Aleksandrov 3412594e906SNikolay Aleksandrov out_fdb_insert: 3426be144f6SNikolay Aleksandrov if (br_vlan_should_use(v)) { 3436be144f6SNikolay Aleksandrov br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid); 3446be144f6SNikolay Aleksandrov vg->num_vlans--; 3456be144f6SNikolay Aleksandrov } 3462594e906SNikolay Aleksandrov 3472594e906SNikolay Aleksandrov out_filt: 3482594e906SNikolay Aleksandrov if (p) { 34927973793SIdo Schimmel __vlan_vid_del(dev, br, v); 3502594e906SNikolay Aleksandrov if (masterv) { 3511a3aea25SLi RongQing if (v->stats && masterv->stats != v->stats) 3521a3aea25SLi RongQing free_percpu(v->stats); 3531a3aea25SLi RongQing v->stats = NULL; 3541a3aea25SLi RongQing 355f8ed289fSNikolay Aleksandrov br_vlan_put_master(masterv); 3562594e906SNikolay Aleksandrov v->brvlan = NULL; 3572594e906SNikolay Aleksandrov } 3589c86ce2cSPetr Machata } else { 3599c86ce2cSPetr Machata br_switchdev_port_vlan_del(dev, v->vid); 3602594e906SNikolay Aleksandrov } 3612594e906SNikolay Aleksandrov 3622594e906SNikolay Aleksandrov goto out; 3632594e906SNikolay Aleksandrov } 3642594e906SNikolay Aleksandrov 3652594e906SNikolay Aleksandrov static int __vlan_del(struct net_bridge_vlan *v) 3662594e906SNikolay Aleksandrov { 3672594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = v; 36877751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 3692594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 3702594e906SNikolay Aleksandrov int err = 0; 3712594e906SNikolay Aleksandrov 3722594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 373907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 3742594e906SNikolay Aleksandrov } else { 3752594e906SNikolay Aleksandrov p = v->port; 376907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 3772594e906SNikolay Aleksandrov masterv = v->brvlan; 3782594e906SNikolay Aleksandrov } 3792594e906SNikolay Aleksandrov 38077751ee8SNikolay Aleksandrov __vlan_delete_pvid(vg, v->vid); 3812594e906SNikolay Aleksandrov if (p) { 38227973793SIdo Schimmel err = __vlan_vid_del(p->dev, p->br, v); 3832594e906SNikolay Aleksandrov if (err) 3842594e906SNikolay Aleksandrov goto out; 3859c86ce2cSPetr Machata } else { 3869c86ce2cSPetr Machata err = br_switchdev_port_vlan_del(v->br->dev, v->vid); 3879c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 3889c86ce2cSPetr Machata goto out; 3899c86ce2cSPetr Machata err = 0; 3902594e906SNikolay Aleksandrov } 3912594e906SNikolay Aleksandrov 3926be144f6SNikolay Aleksandrov if (br_vlan_should_use(v)) { 3932594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; 3946be144f6SNikolay Aleksandrov vg->num_vlans--; 3952594e906SNikolay Aleksandrov } 3962594e906SNikolay Aleksandrov 3972594e906SNikolay Aleksandrov if (masterv != v) { 398efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 39977751ee8SNikolay Aleksandrov rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, 40077751ee8SNikolay Aleksandrov br_vlan_rht_params); 4012594e906SNikolay Aleksandrov __vlan_del_list(v); 40280900acdSMike Manning nbp_vlan_set_vlan_dev_state(p, v->vid); 4037b54aaafSNikolay Aleksandrov br_multicast_toggle_one_vlan(v, false); 404613d61dbSNikolay Aleksandrov br_multicast_port_ctx_deinit(&v->port_mcast_ctx); 4059163a0fcSNikolay Aleksandrov call_rcu(&v->rcu, nbp_vlan_rcu_free); 4062594e906SNikolay Aleksandrov } 4072594e906SNikolay Aleksandrov 408f8ed289fSNikolay Aleksandrov br_vlan_put_master(masterv); 4092594e906SNikolay Aleksandrov out: 410bf361ad3SVivien Didelot return err; 4118580e211SToshiaki Makita } 412243a2e63SVlad Yasevich 413f409d0edSNikolay Aleksandrov static void __vlan_group_free(struct net_bridge_vlan_group *vg) 414f409d0edSNikolay Aleksandrov { 415f409d0edSNikolay Aleksandrov WARN_ON(!list_empty(&vg->vlan_list)); 416f409d0edSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 417efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 418f409d0edSNikolay Aleksandrov kfree(vg); 419f409d0edSNikolay Aleksandrov } 420f409d0edSNikolay Aleksandrov 421f545923bSNikolay Aleksandrov static void __vlan_flush(const struct net_bridge *br, 422f545923bSNikolay Aleksandrov const struct net_bridge_port *p, 423f545923bSNikolay Aleksandrov struct net_bridge_vlan_group *vg) 424243a2e63SVlad Yasevich { 4252594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan, *tmp; 426f545923bSNikolay Aleksandrov u16 v_start = 0, v_end = 0; 4275454f5c2SVladimir Oltean int err; 4282594e906SNikolay Aleksandrov 429f409d0edSNikolay Aleksandrov __vlan_delete_pvid(vg, vg->pvid); 430f545923bSNikolay Aleksandrov list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) { 431f545923bSNikolay Aleksandrov /* take care of disjoint ranges */ 432f545923bSNikolay Aleksandrov if (!v_start) { 433f545923bSNikolay Aleksandrov v_start = vlan->vid; 434f545923bSNikolay Aleksandrov } else if (vlan->vid - v_end != 1) { 435f545923bSNikolay Aleksandrov /* found range end, notify and start next one */ 436f545923bSNikolay Aleksandrov br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN); 437f545923bSNikolay Aleksandrov v_start = vlan->vid; 438f545923bSNikolay Aleksandrov } 439f545923bSNikolay Aleksandrov v_end = vlan->vid; 440f545923bSNikolay Aleksandrov 4415454f5c2SVladimir Oltean err = __vlan_del(vlan); 4425454f5c2SVladimir Oltean if (err) { 4435454f5c2SVladimir Oltean br_err(br, 4445454f5c2SVladimir Oltean "port %u(%s) failed to delete vlan %d: %pe\n", 4455454f5c2SVladimir Oltean (unsigned int) p->port_no, p->dev->name, 4465454f5c2SVladimir Oltean vlan->vid, ERR_PTR(err)); 4475454f5c2SVladimir Oltean } 448243a2e63SVlad Yasevich } 449243a2e63SVlad Yasevich 450f545923bSNikolay Aleksandrov /* notify about the last/whole vlan range */ 451f545923bSNikolay Aleksandrov if (v_start) 452f545923bSNikolay Aleksandrov br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN); 453f545923bSNikolay Aleksandrov } 454f545923bSNikolay Aleksandrov 45578851988SVlad Yasevich struct sk_buff *br_handle_vlan(struct net_bridge *br, 45611538d03SRoopa Prabhu const struct net_bridge_port *p, 4572594e906SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 458a37b85c9SVlad Yasevich struct sk_buff *skb) 459a37b85c9SVlad Yasevich { 460281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats; 4612594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 462a37b85c9SVlad Yasevich u16 vid; 463a37b85c9SVlad Yasevich 46420adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 46520adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 46678851988SVlad Yasevich goto out; 46778851988SVlad Yasevich 4682594e906SNikolay Aleksandrov /* At this point, we know that the frame was filtered and contains 4692594e906SNikolay Aleksandrov * a valid vlan id. If the vlan id has untagged flag set, 4702594e906SNikolay Aleksandrov * send untagged; otherwise, send tagged. 4712594e906SNikolay Aleksandrov */ 4722594e906SNikolay Aleksandrov br_vlan_get_tag(skb, &vid); 4732594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 4742594e906SNikolay Aleksandrov /* Vlan entry must be configured at this point. The 475fc92f745SVlad Yasevich * only exception is the bridge is set in promisc mode and the 476fc92f745SVlad Yasevich * packet is destined for the bridge device. In this case 477fc92f745SVlad Yasevich * pass the packet as is. 478fc92f745SVlad Yasevich */ 4792594e906SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) { 480fc92f745SVlad Yasevich if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { 481fc92f745SVlad Yasevich goto out; 482fc92f745SVlad Yasevich } else { 483fc92f745SVlad Yasevich kfree_skb(skb); 484fc92f745SVlad Yasevich return NULL; 485fc92f745SVlad Yasevich } 486fc92f745SVlad Yasevich } 487ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 4886dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 4896dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 4906dada9b1SNikolay Aleksandrov stats->tx_bytes += skb->len; 4916dada9b1SNikolay Aleksandrov stats->tx_packets++; 4926dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 4936dada9b1SNikolay Aleksandrov } 4946dada9b1SNikolay Aleksandrov 49547211192STobias Waldekranz /* If the skb will be sent using forwarding offload, the assumption is 49647211192STobias Waldekranz * that the switchdev will inject the packet into hardware together 49747211192STobias Waldekranz * with the bridge VLAN, so that it can be forwarded according to that 49847211192STobias Waldekranz * VLAN. The switchdev should deal with popping the VLAN header in 49947211192STobias Waldekranz * hardware on each egress port as appropriate. So only strip the VLAN 50047211192STobias Waldekranz * header if forwarding offload is not being used. 50147211192STobias Waldekranz */ 50247211192STobias Waldekranz if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED && 50347211192STobias Waldekranz !br_switchdev_frame_uses_tx_fwd_offload(skb)) 5045978f8a9SMichał Mirosław __vlan_hwaccel_clear_tag(skb); 50511538d03SRoopa Prabhu 50611538d03SRoopa Prabhu if (p && (p->flags & BR_VLAN_TUNNEL) && 50711538d03SRoopa Prabhu br_handle_egress_vlan_tunnel(skb, v)) { 50811538d03SRoopa Prabhu kfree_skb(skb); 50911538d03SRoopa Prabhu return NULL; 51011538d03SRoopa Prabhu } 51178851988SVlad Yasevich out: 51278851988SVlad Yasevich return skb; 51378851988SVlad Yasevich } 51478851988SVlad Yasevich 51578851988SVlad Yasevich /* Called under RCU */ 5166dada9b1SNikolay Aleksandrov static bool __allowed_ingress(const struct net_bridge *br, 5176dada9b1SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 518a580c76dSNikolay Aleksandrov struct sk_buff *skb, u16 *vid, 519f4b7002aSNikolay Aleksandrov u8 *state, 520f4b7002aSNikolay Aleksandrov struct net_bridge_vlan **vlan) 52178851988SVlad Yasevich { 522281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats; 5236dada9b1SNikolay Aleksandrov struct net_bridge_vlan *v; 5248580e211SToshiaki Makita bool tagged; 525a37b85c9SVlad Yasevich 52620adfa1aSVlad Yasevich BR_INPUT_SKB_CB(skb)->vlan_filtered = true; 52712464bb8SToshiaki Makita /* If vlan tx offload is disabled on bridge device and frame was 52812464bb8SToshiaki Makita * sent from vlan device on the bridge device, it does not have 52912464bb8SToshiaki Makita * HW accelerated vlan tag. 53012464bb8SToshiaki Makita */ 531df8a39deSJiri Pirko if (unlikely(!skb_vlan_tag_present(skb) && 5326dada9b1SNikolay Aleksandrov skb->protocol == br->vlan_proto)) { 5330d5501c1SVlad Yasevich skb = skb_vlan_untag(skb); 53412464bb8SToshiaki Makita if (unlikely(!skb)) 53512464bb8SToshiaki Makita return false; 53612464bb8SToshiaki Makita } 53712464bb8SToshiaki Makita 5388580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid)) { 5398580e211SToshiaki Makita /* Tagged frame */ 5406dada9b1SNikolay Aleksandrov if (skb->vlan_proto != br->vlan_proto) { 5418580e211SToshiaki Makita /* Protocol-mismatch, empty out vlan_tci for new tag */ 5428580e211SToshiaki Makita skb_push(skb, ETH_HLEN); 54362749e2cSJiri Pirko skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, 544df8a39deSJiri Pirko skb_vlan_tag_get(skb)); 5458580e211SToshiaki Makita if (unlikely(!skb)) 5468580e211SToshiaki Makita return false; 5478580e211SToshiaki Makita 5488580e211SToshiaki Makita skb_pull(skb, ETH_HLEN); 5498580e211SToshiaki Makita skb_reset_mac_len(skb); 5508580e211SToshiaki Makita *vid = 0; 5518580e211SToshiaki Makita tagged = false; 5528580e211SToshiaki Makita } else { 5538580e211SToshiaki Makita tagged = true; 5548580e211SToshiaki Makita } 5558580e211SToshiaki Makita } else { 5568580e211SToshiaki Makita /* Untagged frame */ 5578580e211SToshiaki Makita tagged = false; 5588580e211SToshiaki Makita } 5598580e211SToshiaki Makita 560b90356ceSToshiaki Makita if (!*vid) { 56177751ee8SNikolay Aleksandrov u16 pvid = br_get_pvid(vg); 56277751ee8SNikolay Aleksandrov 563b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 564b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 565b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 56678851988SVlad Yasevich */ 5673df6bf45SVlad Yasevich if (!pvid) 568eb707618SToshiaki Makita goto drop; 56978851988SVlad Yasevich 570b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 571b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 57278851988SVlad Yasevich */ 573dfb5fa32SToshiaki Makita *vid = pvid; 5748580e211SToshiaki Makita if (likely(!tagged)) 575b90356ceSToshiaki Makita /* Untagged Frame. */ 5766dada9b1SNikolay Aleksandrov __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); 577b90356ceSToshiaki Makita else 578b90356ceSToshiaki Makita /* Priority-tagged Frame. 5795978f8a9SMichał Mirosław * At this point, we know that skb->vlan_tci VID 5805978f8a9SMichał Mirosław * field was 0. 581b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 582b90356ceSToshiaki Makita */ 583b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 584b90356ceSToshiaki Makita 585f4b7002aSNikolay Aleksandrov /* if snooping and stats are disabled we can avoid the lookup */ 586f4b7002aSNikolay Aleksandrov if (!br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) && 587f4b7002aSNikolay Aleksandrov !br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 588a580c76dSNikolay Aleksandrov if (*state == BR_STATE_FORWARDING) { 589a580c76dSNikolay Aleksandrov *state = br_vlan_get_pvid_state(vg); 590fd20d973STim Yi if (!br_vlan_state_allowed(*state, true)) 591fd20d973STim Yi goto drop; 59278851988SVlad Yasevich } 593fd20d973STim Yi return true; 594a580c76dSNikolay Aleksandrov } 595a580c76dSNikolay Aleksandrov } 59677751ee8SNikolay Aleksandrov v = br_vlan_find(vg, *vid); 5976dada9b1SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 5986dada9b1SNikolay Aleksandrov goto drop; 5996dada9b1SNikolay Aleksandrov 600a580c76dSNikolay Aleksandrov if (*state == BR_STATE_FORWARDING) { 601a580c76dSNikolay Aleksandrov *state = br_vlan_get_state(v); 602a580c76dSNikolay Aleksandrov if (!br_vlan_state_allowed(*state, true)) 603a580c76dSNikolay Aleksandrov goto drop; 604a580c76dSNikolay Aleksandrov } 605a580c76dSNikolay Aleksandrov 606ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 6076dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 6086dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 6096dada9b1SNikolay Aleksandrov stats->rx_bytes += skb->len; 6106dada9b1SNikolay Aleksandrov stats->rx_packets++; 6116dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 6126dada9b1SNikolay Aleksandrov } 6136dada9b1SNikolay Aleksandrov 614f4b7002aSNikolay Aleksandrov *vlan = v; 615f4b7002aSNikolay Aleksandrov 616a37b85c9SVlad Yasevich return true; 6176dada9b1SNikolay Aleksandrov 618eb707618SToshiaki Makita drop: 619eb707618SToshiaki Makita kfree_skb(skb); 620a37b85c9SVlad Yasevich return false; 621a37b85c9SVlad Yasevich } 622a37b85c9SVlad Yasevich 62377751ee8SNikolay Aleksandrov bool br_allowed_ingress(const struct net_bridge *br, 62477751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg, struct sk_buff *skb, 625f4b7002aSNikolay Aleksandrov u16 *vid, u8 *state, 626f4b7002aSNikolay Aleksandrov struct net_bridge_vlan **vlan) 6272594e906SNikolay Aleksandrov { 6282594e906SNikolay Aleksandrov /* If VLAN filtering is disabled on the bridge, all packets are 6292594e906SNikolay Aleksandrov * permitted. 6302594e906SNikolay Aleksandrov */ 631f4b7002aSNikolay Aleksandrov *vlan = NULL; 632ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) { 6332594e906SNikolay Aleksandrov BR_INPUT_SKB_CB(skb)->vlan_filtered = false; 6342594e906SNikolay Aleksandrov return true; 6352594e906SNikolay Aleksandrov } 6362594e906SNikolay Aleksandrov 637f4b7002aSNikolay Aleksandrov return __allowed_ingress(br, vg, skb, vid, state, vlan); 6382594e906SNikolay Aleksandrov } 6392594e906SNikolay Aleksandrov 64085f46c6bSVlad Yasevich /* Called under RCU. */ 6412594e906SNikolay Aleksandrov bool br_allowed_egress(struct net_bridge_vlan_group *vg, 64285f46c6bSVlad Yasevich const struct sk_buff *skb) 64385f46c6bSVlad Yasevich { 6442594e906SNikolay Aleksandrov const struct net_bridge_vlan *v; 64585f46c6bSVlad Yasevich u16 vid; 64685f46c6bSVlad Yasevich 64720adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 64820adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 64985f46c6bSVlad Yasevich return true; 65085f46c6bSVlad Yasevich 65185f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 6522594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 653a580c76dSNikolay Aleksandrov if (v && br_vlan_should_use(v) && 654a580c76dSNikolay Aleksandrov br_vlan_state_allowed(br_vlan_get_state(v), false)) 65585f46c6bSVlad Yasevich return true; 65685f46c6bSVlad Yasevich 65785f46c6bSVlad Yasevich return false; 65885f46c6bSVlad Yasevich } 65985f46c6bSVlad Yasevich 660e0d7968aSToshiaki Makita /* Called under RCU */ 661e0d7968aSToshiaki Makita bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) 662e0d7968aSToshiaki Makita { 663468e7944SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 664e0d7968aSToshiaki Makita struct net_bridge *br = p->br; 665a580c76dSNikolay Aleksandrov struct net_bridge_vlan *v; 666e0d7968aSToshiaki Makita 66720adfa1aSVlad Yasevich /* If filtering was disabled at input, let it pass. */ 668ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 669e0d7968aSToshiaki Makita return true; 670e0d7968aSToshiaki Makita 671eca1e006SIdo Schimmel vg = nbp_vlan_group_rcu(p); 672468e7944SNikolay Aleksandrov if (!vg || !vg->num_vlans) 673e0d7968aSToshiaki Makita return false; 674e0d7968aSToshiaki Makita 6758580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) 6768580e211SToshiaki Makita *vid = 0; 6778580e211SToshiaki Makita 678e0d7968aSToshiaki Makita if (!*vid) { 67977751ee8SNikolay Aleksandrov *vid = br_get_pvid(vg); 680a580c76dSNikolay Aleksandrov if (!*vid || 681a580c76dSNikolay Aleksandrov !br_vlan_state_allowed(br_vlan_get_pvid_state(vg), true)) 682e0d7968aSToshiaki Makita return false; 683e0d7968aSToshiaki Makita 684e0d7968aSToshiaki Makita return true; 685e0d7968aSToshiaki Makita } 686e0d7968aSToshiaki Makita 687a580c76dSNikolay Aleksandrov v = br_vlan_find(vg, *vid); 688a580c76dSNikolay Aleksandrov if (v && br_vlan_state_allowed(br_vlan_get_state(v), true)) 689e0d7968aSToshiaki Makita return true; 690e0d7968aSToshiaki Makita 691e0d7968aSToshiaki Makita return false; 692e0d7968aSToshiaki Makita } 693e0d7968aSToshiaki Makita 694dbd6dc75SPetr Machata static int br_vlan_add_existing(struct net_bridge *br, 695dbd6dc75SPetr Machata struct net_bridge_vlan_group *vg, 696dbd6dc75SPetr Machata struct net_bridge_vlan *vlan, 697169327d5SPetr Machata u16 flags, bool *changed, 698169327d5SPetr Machata struct netlink_ext_ack *extack) 699dbd6dc75SPetr Machata { 70027c5f74cSVladimir Oltean bool would_change = __vlan_flags_would_change(vlan, flags); 70127c5f74cSVladimir Oltean bool becomes_brentry = false; 702dbd6dc75SPetr Machata int err; 703dbd6dc75SPetr Machata 70427c5f74cSVladimir Oltean if (!br_vlan_is_brentry(vlan)) { 705b2bc58d4SVladimir Oltean /* Trying to change flags of non-existent bridge vlan */ 70627c5f74cSVladimir Oltean if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) 707b2bc58d4SVladimir Oltean return -EINVAL; 708b2bc58d4SVladimir Oltean 70927c5f74cSVladimir Oltean becomes_brentry = true; 71027c5f74cSVladimir Oltean } 71127c5f74cSVladimir Oltean 71227c5f74cSVladimir Oltean /* Master VLANs that aren't brentries weren't notified before, 71327c5f74cSVladimir Oltean * time to notify them now. 71427c5f74cSVladimir Oltean */ 71527c5f74cSVladimir Oltean if (becomes_brentry || would_change) { 71627c5f74cSVladimir Oltean err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags, 717*8d23a54fSVladimir Oltean would_change, extack); 7189c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 7199c86ce2cSPetr Machata return err; 72027c5f74cSVladimir Oltean } 7219c86ce2cSPetr Machata 72227c5f74cSVladimir Oltean if (becomes_brentry) { 723dbd6dc75SPetr Machata /* It was only kept for port vlans, now make it real */ 724f6814fdcSVladimir Oltean err = br_fdb_add_local(br, NULL, br->dev->dev_addr, vlan->vid); 725dbd6dc75SPetr Machata if (err) { 726dbd6dc75SPetr Machata br_err(br, "failed to insert local address into bridge forwarding table\n"); 7279c86ce2cSPetr Machata goto err_fdb_insert; 728dbd6dc75SPetr Machata } 729dbd6dc75SPetr Machata 730dbd6dc75SPetr Machata refcount_inc(&vlan->refcnt); 731dbd6dc75SPetr Machata vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; 732dbd6dc75SPetr Machata vg->num_vlans++; 733dbd6dc75SPetr Machata *changed = true; 734b92dace3SNikolay Aleksandrov br_multicast_toggle_one_vlan(vlan, true); 735dbd6dc75SPetr Machata } 736dbd6dc75SPetr Machata 73727c5f74cSVladimir Oltean __vlan_flags_commit(vlan, flags); 73827c5f74cSVladimir Oltean if (would_change) 739dbd6dc75SPetr Machata *changed = true; 740dbd6dc75SPetr Machata 741dbd6dc75SPetr Machata return 0; 7429c86ce2cSPetr Machata 7439c86ce2cSPetr Machata err_fdb_insert: 7449c86ce2cSPetr Machata br_switchdev_port_vlan_del(br->dev, vlan->vid); 7459c86ce2cSPetr Machata return err; 746dbd6dc75SPetr Machata } 747dbd6dc75SPetr Machata 7488adff41cSToshiaki Makita /* Must be protected by RTNL. 7498adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 750f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 7518adff41cSToshiaki Makita */ 752169327d5SPetr Machata int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed, 753169327d5SPetr Machata struct netlink_ext_ack *extack) 754243a2e63SVlad Yasevich { 755907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 7562594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 7572594e906SNikolay Aleksandrov int ret; 758243a2e63SVlad Yasevich 759243a2e63SVlad Yasevich ASSERT_RTNL(); 760243a2e63SVlad Yasevich 761f418af63SNikolay Aleksandrov *changed = false; 762907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 763907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(vg, vid); 764dbd6dc75SPetr Machata if (vlan) 765169327d5SPetr Machata return br_vlan_add_existing(br, vg, vlan, flags, changed, 766169327d5SPetr Machata extack); 767243a2e63SVlad Yasevich 7682594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 7692594e906SNikolay Aleksandrov if (!vlan) 770243a2e63SVlad Yasevich return -ENOMEM; 771243a2e63SVlad Yasevich 772281cc284SHeiner Kallweit vlan->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 7736dada9b1SNikolay Aleksandrov if (!vlan->stats) { 7746dada9b1SNikolay Aleksandrov kfree(vlan); 7756dada9b1SNikolay Aleksandrov return -ENOMEM; 7766dada9b1SNikolay Aleksandrov } 7772594e906SNikolay Aleksandrov vlan->vid = vid; 7782594e906SNikolay Aleksandrov vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; 7792594e906SNikolay Aleksandrov vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; 7802594e906SNikolay Aleksandrov vlan->br = br; 7812594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_BRENTRY) 78225127759SReshetova, Elena refcount_set(&vlan->refcnt, 1); 783169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 7846dada9b1SNikolay Aleksandrov if (ret) { 7856dada9b1SNikolay Aleksandrov free_percpu(vlan->stats); 7862594e906SNikolay Aleksandrov kfree(vlan); 787f418af63SNikolay Aleksandrov } else { 788f418af63SNikolay Aleksandrov *changed = true; 7896dada9b1SNikolay Aleksandrov } 790243a2e63SVlad Yasevich 7912594e906SNikolay Aleksandrov return ret; 792243a2e63SVlad Yasevich } 793243a2e63SVlad Yasevich 7948adff41cSToshiaki Makita /* Must be protected by RTNL. 7958adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 7968adff41cSToshiaki Makita */ 797243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 798243a2e63SVlad Yasevich { 799907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 8002594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 801243a2e63SVlad Yasevich 802243a2e63SVlad Yasevich ASSERT_RTNL(); 803243a2e63SVlad Yasevich 804907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 805907b1e6eSNikolay Aleksandrov v = br_vlan_find(vg, vid); 8062594e906SNikolay Aleksandrov if (!v || !br_vlan_is_brentry(v)) 8072594e906SNikolay Aleksandrov return -ENOENT; 808243a2e63SVlad Yasevich 809424bb9c9SToshiaki Makita br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); 8103741873bSRoopa Prabhu br_fdb_delete_by_port(br, NULL, vid, 0); 811bc9a25d2SVlad Yasevich 812efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 813efa5356bSRoopa Prabhu 8142594e906SNikolay Aleksandrov return __vlan_del(v); 815243a2e63SVlad Yasevich } 816243a2e63SVlad Yasevich 817243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 818243a2e63SVlad Yasevich { 819f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 820f409d0edSNikolay Aleksandrov 821243a2e63SVlad Yasevich ASSERT_RTNL(); 822243a2e63SVlad Yasevich 823f409d0edSNikolay Aleksandrov vg = br_vlan_group(br); 824f545923bSNikolay Aleksandrov __vlan_flush(br, NULL, vg); 825f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(br->vlgrp, NULL); 826f409d0edSNikolay Aleksandrov synchronize_rcu(); 827f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 828243a2e63SVlad Yasevich } 829243a2e63SVlad Yasevich 8302594e906SNikolay Aleksandrov struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) 8312b292fb4SToshiaki Makita { 8322594e906SNikolay Aleksandrov if (!vg) 8332594e906SNikolay Aleksandrov return NULL; 8342b292fb4SToshiaki Makita 8352594e906SNikolay Aleksandrov return br_vlan_lookup(&vg->vlan_hash, vid); 8362b292fb4SToshiaki Makita } 8372b292fb4SToshiaki Makita 838204177f3SToshiaki Makita /* Must be protected by RTNL. */ 839204177f3SToshiaki Makita static void recalculate_group_addr(struct net_bridge *br) 840204177f3SToshiaki Makita { 841be3664a0SNikolay Aleksandrov if (br_opt_get(br, BROPT_GROUP_ADDR_SET)) 842204177f3SToshiaki Makita return; 843204177f3SToshiaki Makita 844204177f3SToshiaki Makita spin_lock_bh(&br->lock); 845ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 846ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) { 847204177f3SToshiaki Makita /* Bridge Group Address */ 848204177f3SToshiaki Makita br->group_addr[5] = 0x00; 849204177f3SToshiaki Makita } else { /* vlan_enabled && ETH_P_8021AD */ 850204177f3SToshiaki Makita /* Provider Bridge Group Address */ 851204177f3SToshiaki Makita br->group_addr[5] = 0x08; 852204177f3SToshiaki Makita } 853204177f3SToshiaki Makita spin_unlock_bh(&br->lock); 854204177f3SToshiaki Makita } 855204177f3SToshiaki Makita 856204177f3SToshiaki Makita /* Must be protected by RTNL. */ 857204177f3SToshiaki Makita void br_recalculate_fwd_mask(struct net_bridge *br) 858204177f3SToshiaki Makita { 859ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 860ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) 861204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; 862204177f3SToshiaki Makita else /* vlan_enabled && ETH_P_8021AD */ 863204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_8021AD & 864204177f3SToshiaki Makita ~(1u << br->group_addr[5]); 865204177f3SToshiaki Makita } 866204177f3SToshiaki Makita 8679e781401SVladimir Oltean int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, 8689e781401SVladimir Oltean struct netlink_ext_ack *extack) 869243a2e63SVlad Yasevich { 8706b72a770SElad Raz struct switchdev_attr attr = { 8716b72a770SElad Raz .orig_dev = br->dev, 8726b72a770SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 8736b72a770SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 8746b72a770SElad Raz .u.vlan_filtering = val, 8756b72a770SElad Raz }; 8766b72a770SElad Raz int err; 8776b72a770SElad Raz 878ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED) == !!val) 879a7854037SNikolay Aleksandrov return 0; 880243a2e63SVlad Yasevich 881ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_ENABLED, !!val); 882f7cdb3ecSVladimir Oltean 883f7cdb3ecSVladimir Oltean err = switchdev_port_attr_set(br->dev, &attr, extack); 884f7cdb3ecSVladimir Oltean if (err && err != -EOPNOTSUPP) { 885f7cdb3ecSVladimir Oltean br_opt_toggle(br, BROPT_VLAN_ENABLED, !val); 886f7cdb3ecSVladimir Oltean return err; 887f7cdb3ecSVladimir Oltean } 888f7cdb3ecSVladimir Oltean 8892796d0c6SVlad Yasevich br_manage_promisc(br); 890204177f3SToshiaki Makita recalculate_group_addr(br); 891204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 892f4b7002aSNikolay Aleksandrov if (!val && br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED)) { 893f4b7002aSNikolay Aleksandrov br_info(br, "vlan filtering disabled, automatically disabling multicast vlan snooping\n"); 894f4b7002aSNikolay Aleksandrov br_multicast_toggle_vlan_snooping(br, false, NULL); 895f4b7002aSNikolay Aleksandrov } 896243a2e63SVlad Yasevich 897a7854037SNikolay Aleksandrov return 0; 898a7854037SNikolay Aleksandrov } 899a7854037SNikolay Aleksandrov 9001f51445aSIdo Schimmel bool br_vlan_enabled(const struct net_device *dev) 9011f51445aSIdo Schimmel { 9021f51445aSIdo Schimmel struct net_bridge *br = netdev_priv(dev); 9031f51445aSIdo Schimmel 904ae75767eSNikolay Aleksandrov return br_opt_get(br, BROPT_VLAN_ENABLED); 9051f51445aSIdo Schimmel } 9061f51445aSIdo Schimmel EXPORT_SYMBOL_GPL(br_vlan_enabled); 9071f51445aSIdo Schimmel 90831aed46fSwenxu int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 90931aed46fSwenxu { 91031aed46fSwenxu struct net_bridge *br = netdev_priv(dev); 91131aed46fSwenxu 91231aed46fSwenxu *p_proto = ntohs(br->vlan_proto); 91331aed46fSwenxu 91431aed46fSwenxu return 0; 91531aed46fSwenxu } 91631aed46fSwenxu EXPORT_SYMBOL_GPL(br_vlan_get_proto); 91731aed46fSwenxu 918dcbdf135SVladimir Oltean int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, 919dcbdf135SVladimir Oltean struct netlink_ext_ack *extack) 920204177f3SToshiaki Makita { 92122ec19f3SDanielle Ratson struct switchdev_attr attr = { 92222ec19f3SDanielle Ratson .orig_dev = br->dev, 92322ec19f3SDanielle Ratson .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, 92422ec19f3SDanielle Ratson .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 92522ec19f3SDanielle Ratson .u.vlan_protocol = ntohs(proto), 92622ec19f3SDanielle Ratson }; 927204177f3SToshiaki Makita int err = 0; 928204177f3SToshiaki Makita struct net_bridge_port *p; 9292594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 930907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 93122ec19f3SDanielle Ratson __be16 oldproto = br->vlan_proto; 932204177f3SToshiaki Makita 933204177f3SToshiaki Makita if (br->vlan_proto == proto) 934d2d427b3SToshiaki Makita return 0; 935204177f3SToshiaki Makita 936dcbdf135SVladimir Oltean err = switchdev_port_attr_set(br->dev, &attr, extack); 93722ec19f3SDanielle Ratson if (err && err != -EOPNOTSUPP) 93822ec19f3SDanielle Ratson return err; 93922ec19f3SDanielle Ratson 940204177f3SToshiaki Makita /* Add VLANs for the new proto to the device filter. */ 941204177f3SToshiaki Makita list_for_each_entry(p, &br->port_list, list) { 942907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 943907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) { 9442594e906SNikolay Aleksandrov err = vlan_vid_add(p->dev, proto, vlan->vid); 945204177f3SToshiaki Makita if (err) 946204177f3SToshiaki Makita goto err_filt; 947204177f3SToshiaki Makita } 948204177f3SToshiaki Makita } 949204177f3SToshiaki Makita 950204177f3SToshiaki Makita br->vlan_proto = proto; 951204177f3SToshiaki Makita 952204177f3SToshiaki Makita recalculate_group_addr(br); 953204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 954204177f3SToshiaki Makita 955204177f3SToshiaki Makita /* Delete VLANs for the old proto from the device filter. */ 956907b1e6eSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 957907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 958907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 9592594e906SNikolay Aleksandrov vlan_vid_del(p->dev, oldproto, vlan->vid); 960907b1e6eSNikolay Aleksandrov } 961204177f3SToshiaki Makita 962d2d427b3SToshiaki Makita return 0; 963204177f3SToshiaki Makita 964204177f3SToshiaki Makita err_filt: 96522ec19f3SDanielle Ratson attr.u.vlan_protocol = ntohs(oldproto); 966dcbdf135SVladimir Oltean switchdev_port_attr_set(br->dev, &attr, NULL); 96722ec19f3SDanielle Ratson 968907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) 9692594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 970204177f3SToshiaki Makita 971907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(p, &br->port_list, list) { 972907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 973907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 9742594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 975907b1e6eSNikolay Aleksandrov } 976204177f3SToshiaki Makita 977d2d427b3SToshiaki Makita return err; 978d2d427b3SToshiaki Makita } 979d2d427b3SToshiaki Makita 9809e781401SVladimir Oltean int br_vlan_set_proto(struct net_bridge *br, unsigned long val, 9819e781401SVladimir Oltean struct netlink_ext_ack *extack) 982d2d427b3SToshiaki Makita { 983a98c0c47SMenglong Dong if (!eth_type_vlan(htons(val))) 984d2d427b3SToshiaki Makita return -EPROTONOSUPPORT; 985d2d427b3SToshiaki Makita 986dcbdf135SVladimir Oltean return __br_vlan_set_proto(br, htons(val), extack); 987204177f3SToshiaki Makita } 988204177f3SToshiaki Makita 9896dada9b1SNikolay Aleksandrov int br_vlan_set_stats(struct net_bridge *br, unsigned long val) 9906dada9b1SNikolay Aleksandrov { 9916dada9b1SNikolay Aleksandrov switch (val) { 9926dada9b1SNikolay Aleksandrov case 0: 9936dada9b1SNikolay Aleksandrov case 1: 994ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_ENABLED, !!val); 9956dada9b1SNikolay Aleksandrov break; 9966dada9b1SNikolay Aleksandrov default: 9976dada9b1SNikolay Aleksandrov return -EINVAL; 9986dada9b1SNikolay Aleksandrov } 9996dada9b1SNikolay Aleksandrov 10006dada9b1SNikolay Aleksandrov return 0; 10016dada9b1SNikolay Aleksandrov } 10026dada9b1SNikolay Aleksandrov 10039163a0fcSNikolay Aleksandrov int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val) 10049163a0fcSNikolay Aleksandrov { 10059163a0fcSNikolay Aleksandrov struct net_bridge_port *p; 10069163a0fcSNikolay Aleksandrov 10079163a0fcSNikolay Aleksandrov /* allow to change the option if there are no port vlans configured */ 10089163a0fcSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 10099163a0fcSNikolay Aleksandrov struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 10109163a0fcSNikolay Aleksandrov 10119163a0fcSNikolay Aleksandrov if (vg->num_vlans) 10129163a0fcSNikolay Aleksandrov return -EBUSY; 10139163a0fcSNikolay Aleksandrov } 10149163a0fcSNikolay Aleksandrov 10159163a0fcSNikolay Aleksandrov switch (val) { 10169163a0fcSNikolay Aleksandrov case 0: 10179163a0fcSNikolay Aleksandrov case 1: 10189163a0fcSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_PER_PORT, !!val); 10199163a0fcSNikolay Aleksandrov break; 10209163a0fcSNikolay Aleksandrov default: 10219163a0fcSNikolay Aleksandrov return -EINVAL; 10229163a0fcSNikolay Aleksandrov } 10239163a0fcSNikolay Aleksandrov 10249163a0fcSNikolay Aleksandrov return 0; 10259163a0fcSNikolay Aleksandrov } 10269163a0fcSNikolay Aleksandrov 102777751ee8SNikolay Aleksandrov static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) 10285be5a2dfSVlad Yasevich { 10292594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 10302594e906SNikolay Aleksandrov 103177751ee8SNikolay Aleksandrov if (vid != vg->pvid) 10322594e906SNikolay Aleksandrov return false; 10332594e906SNikolay Aleksandrov 10342594e906SNikolay Aleksandrov v = br_vlan_lookup(&vg->vlan_hash, vid); 10352594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v) && 10362594e906SNikolay Aleksandrov (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 10372594e906SNikolay Aleksandrov return true; 10382594e906SNikolay Aleksandrov 10392594e906SNikolay Aleksandrov return false; 10405be5a2dfSVlad Yasevich } 10415be5a2dfSVlad Yasevich 10425be5a2dfSVlad Yasevich static void br_vlan_disable_default_pvid(struct net_bridge *br) 10435be5a2dfSVlad Yasevich { 10445be5a2dfSVlad Yasevich struct net_bridge_port *p; 10455be5a2dfSVlad Yasevich u16 pvid = br->default_pvid; 10465be5a2dfSVlad Yasevich 10475be5a2dfSVlad Yasevich /* Disable default_pvid on all ports where it is still 10485be5a2dfSVlad Yasevich * configured. 10495be5a2dfSVlad Yasevich */ 1050f545923bSNikolay Aleksandrov if (vlan_default_pvid(br_vlan_group(br), pvid)) { 1051f545923bSNikolay Aleksandrov if (!br_vlan_delete(br, pvid)) 1052f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); 1053f545923bSNikolay Aleksandrov } 10545be5a2dfSVlad Yasevich 10555be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 1056f545923bSNikolay Aleksandrov if (vlan_default_pvid(nbp_vlan_group(p), pvid) && 1057f545923bSNikolay Aleksandrov !nbp_vlan_delete(p, pvid)) 1058f545923bSNikolay Aleksandrov br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); 10595be5a2dfSVlad Yasevich } 10605be5a2dfSVlad Yasevich 10615be5a2dfSVlad Yasevich br->default_pvid = 0; 10625be5a2dfSVlad Yasevich } 10635be5a2dfSVlad Yasevich 1064169327d5SPetr Machata int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 1065169327d5SPetr Machata struct netlink_ext_ack *extack) 10665be5a2dfSVlad Yasevich { 10672594e906SNikolay Aleksandrov const struct net_bridge_vlan *pvent; 1068907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 10695be5a2dfSVlad Yasevich struct net_bridge_port *p; 1070f418af63SNikolay Aleksandrov unsigned long *changed; 1071f418af63SNikolay Aleksandrov bool vlchange; 10725be5a2dfSVlad Yasevich u16 old_pvid; 10735be5a2dfSVlad Yasevich int err = 0; 10745be5a2dfSVlad Yasevich 10750f963b75SNikolay Aleksandrov if (!pvid) { 10760f963b75SNikolay Aleksandrov br_vlan_disable_default_pvid(br); 10770f963b75SNikolay Aleksandrov return 0; 10780f963b75SNikolay Aleksandrov } 10790f963b75SNikolay Aleksandrov 1080459479daSAndy Shevchenko changed = bitmap_zalloc(BR_MAX_PORTS, GFP_KERNEL); 10815be5a2dfSVlad Yasevich if (!changed) 10825be5a2dfSVlad Yasevich return -ENOMEM; 10835be5a2dfSVlad Yasevich 10845be5a2dfSVlad Yasevich old_pvid = br->default_pvid; 10855be5a2dfSVlad Yasevich 10865be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 10875be5a2dfSVlad Yasevich * user configuration. 10885be5a2dfSVlad Yasevich */ 1089907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 1090907b1e6eSNikolay Aleksandrov pvent = br_vlan_find(vg, pvid); 1091907b1e6eSNikolay Aleksandrov if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && 10922594e906SNikolay Aleksandrov (!pvent || !br_vlan_should_use(pvent))) { 10935be5a2dfSVlad Yasevich err = br_vlan_add(br, pvid, 10945be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 10952594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1096f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1097169327d5SPetr Machata &vlchange, extack); 10985be5a2dfSVlad Yasevich if (err) 10995be5a2dfSVlad Yasevich goto out; 1100f545923bSNikolay Aleksandrov 1101f545923bSNikolay Aleksandrov if (br_vlan_delete(br, old_pvid)) 1102f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, old_pvid, 0, RTM_DELVLAN); 1103f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_NEWVLAN); 1104442b03c3SXin Long __set_bit(0, changed); 11055be5a2dfSVlad Yasevich } 11065be5a2dfSVlad Yasevich 11075be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 11085be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 11095be5a2dfSVlad Yasevich * user configuration. 11105be5a2dfSVlad Yasevich */ 1111907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 11125be5a2dfSVlad Yasevich if ((old_pvid && 1113907b1e6eSNikolay Aleksandrov !vlan_default_pvid(vg, old_pvid)) || 1114907b1e6eSNikolay Aleksandrov br_vlan_find(vg, pvid)) 11155be5a2dfSVlad Yasevich continue; 11165be5a2dfSVlad Yasevich 11175be5a2dfSVlad Yasevich err = nbp_vlan_add(p, pvid, 11185be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 1119f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1120169327d5SPetr Machata &vlchange, extack); 11215be5a2dfSVlad Yasevich if (err) 11225be5a2dfSVlad Yasevich goto err_port; 1123f545923bSNikolay Aleksandrov if (nbp_vlan_delete(p, old_pvid)) 1124f545923bSNikolay Aleksandrov br_vlan_notify(br, p, old_pvid, 0, RTM_DELVLAN); 1125f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, pvid, 0, RTM_NEWVLAN); 1126442b03c3SXin Long __set_bit(p->port_no, changed); 11275be5a2dfSVlad Yasevich } 11285be5a2dfSVlad Yasevich 11295be5a2dfSVlad Yasevich br->default_pvid = pvid; 11305be5a2dfSVlad Yasevich 11315be5a2dfSVlad Yasevich out: 1132459479daSAndy Shevchenko bitmap_free(changed); 11335be5a2dfSVlad Yasevich return err; 11345be5a2dfSVlad Yasevich 11355be5a2dfSVlad Yasevich err_port: 11365be5a2dfSVlad Yasevich list_for_each_entry_continue_reverse(p, &br->port_list, list) { 11375be5a2dfSVlad Yasevich if (!test_bit(p->port_no, changed)) 11385be5a2dfSVlad Yasevich continue; 11395be5a2dfSVlad Yasevich 1140f545923bSNikolay Aleksandrov if (old_pvid) { 11415be5a2dfSVlad Yasevich nbp_vlan_add(p, old_pvid, 11425be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 1143f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1144169327d5SPetr Machata &vlchange, NULL); 1145f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, old_pvid, 0, RTM_NEWVLAN); 1146f545923bSNikolay Aleksandrov } 11475be5a2dfSVlad Yasevich nbp_vlan_delete(p, pvid); 1148f545923bSNikolay Aleksandrov br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); 11495be5a2dfSVlad Yasevich } 11505be5a2dfSVlad Yasevich 11515be5a2dfSVlad Yasevich if (test_bit(0, changed)) { 1152f545923bSNikolay Aleksandrov if (old_pvid) { 11535be5a2dfSVlad Yasevich br_vlan_add(br, old_pvid, 11545be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 11552594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1156f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1157169327d5SPetr Machata &vlchange, NULL); 1158f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, old_pvid, 0, RTM_NEWVLAN); 1159f545923bSNikolay Aleksandrov } 11605be5a2dfSVlad Yasevich br_vlan_delete(br, pvid); 1161f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); 11625be5a2dfSVlad Yasevich } 11635be5a2dfSVlad Yasevich goto out; 11645be5a2dfSVlad Yasevich } 11655be5a2dfSVlad Yasevich 11669e781401SVladimir Oltean int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, 11679e781401SVladimir Oltean struct netlink_ext_ack *extack) 116896a20d9dSVlad Yasevich { 116996a20d9dSVlad Yasevich u16 pvid = val; 117096a20d9dSVlad Yasevich int err = 0; 117196a20d9dSVlad Yasevich 11725be5a2dfSVlad Yasevich if (val >= VLAN_VID_MASK) 117396a20d9dSVlad Yasevich return -EINVAL; 117496a20d9dSVlad Yasevich 117596a20d9dSVlad Yasevich if (pvid == br->default_pvid) 1176047831a9SXin Long goto out; 117796a20d9dSVlad Yasevich 117896a20d9dSVlad Yasevich /* Only allow default pvid change when filtering is disabled */ 1179ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED)) { 118096a20d9dSVlad Yasevich pr_info_once("Please disable vlan filtering to change default_pvid\n"); 118196a20d9dSVlad Yasevich err = -EPERM; 1182047831a9SXin Long goto out; 118396a20d9dSVlad Yasevich } 11849e781401SVladimir Oltean err = __br_vlan_set_default_pvid(br, pvid, extack); 1185047831a9SXin Long out: 118696a20d9dSVlad Yasevich return err; 118796a20d9dSVlad Yasevich } 118896a20d9dSVlad Yasevich 11895be5a2dfSVlad Yasevich int br_vlan_init(struct net_bridge *br) 11908580e211SToshiaki Makita { 1191907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 11922594e906SNikolay Aleksandrov int ret = -ENOMEM; 11932594e906SNikolay Aleksandrov 1194907b1e6eSNikolay Aleksandrov vg = kzalloc(sizeof(*vg), GFP_KERNEL); 1195907b1e6eSNikolay Aleksandrov if (!vg) 11962594e906SNikolay Aleksandrov goto out; 1197907b1e6eSNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 11982594e906SNikolay Aleksandrov if (ret) 11992594e906SNikolay Aleksandrov goto err_rhtbl; 1200efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1201efa5356bSRoopa Prabhu if (ret) 1202efa5356bSRoopa Prabhu goto err_tunnel_init; 1203907b1e6eSNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 12048580e211SToshiaki Makita br->vlan_proto = htons(ETH_P_8021Q); 120596a20d9dSVlad Yasevich br->default_pvid = 1; 1206907b1e6eSNikolay Aleksandrov rcu_assign_pointer(br->vlgrp, vg); 12072594e906SNikolay Aleksandrov 12082594e906SNikolay Aleksandrov out: 12092594e906SNikolay Aleksandrov return ret; 12102594e906SNikolay Aleksandrov 1211efa5356bSRoopa Prabhu err_tunnel_init: 1212907b1e6eSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 12132594e906SNikolay Aleksandrov err_rhtbl: 1214907b1e6eSNikolay Aleksandrov kfree(vg); 12152594e906SNikolay Aleksandrov 12162594e906SNikolay Aleksandrov goto out; 12172594e906SNikolay Aleksandrov } 12182594e906SNikolay Aleksandrov 1219169327d5SPetr Machata int nbp_vlan_init(struct net_bridge_port *p, struct netlink_ext_ack *extack) 12202594e906SNikolay Aleksandrov { 1221404cdbf0SElad Raz struct switchdev_attr attr = { 1222404cdbf0SElad Raz .orig_dev = p->br->dev, 1223404cdbf0SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 1224404cdbf0SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 1225ae75767eSNikolay Aleksandrov .u.vlan_filtering = br_opt_get(p->br, BROPT_VLAN_ENABLED), 1226404cdbf0SElad Raz }; 1227263344e6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 12282594e906SNikolay Aleksandrov int ret = -ENOMEM; 12292594e906SNikolay Aleksandrov 1230263344e6SNikolay Aleksandrov vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); 1231263344e6SNikolay Aleksandrov if (!vg) 12322594e906SNikolay Aleksandrov goto out; 12332594e906SNikolay Aleksandrov 1234dcbdf135SVladimir Oltean ret = switchdev_port_attr_set(p->dev, &attr, extack); 1235404cdbf0SElad Raz if (ret && ret != -EOPNOTSUPP) 1236404cdbf0SElad Raz goto err_vlan_enabled; 1237404cdbf0SElad Raz 1238263344e6SNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 12392594e906SNikolay Aleksandrov if (ret) 12402594e906SNikolay Aleksandrov goto err_rhtbl; 1241efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1242efa5356bSRoopa Prabhu if (ret) 1243efa5356bSRoopa Prabhu goto err_tunnel_init; 1244263344e6SNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 1245907b1e6eSNikolay Aleksandrov rcu_assign_pointer(p->vlgrp, vg); 12462594e906SNikolay Aleksandrov if (p->br->default_pvid) { 1247f418af63SNikolay Aleksandrov bool changed; 1248f418af63SNikolay Aleksandrov 12492594e906SNikolay Aleksandrov ret = nbp_vlan_add(p, p->br->default_pvid, 12502594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1251f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1252169327d5SPetr Machata &changed, extack); 12532594e906SNikolay Aleksandrov if (ret) 12542594e906SNikolay Aleksandrov goto err_vlan_add; 1255f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, p->br->default_pvid, 0, RTM_NEWVLAN); 12562594e906SNikolay Aleksandrov } 12572594e906SNikolay Aleksandrov out: 12582594e906SNikolay Aleksandrov return ret; 12592594e906SNikolay Aleksandrov 12602594e906SNikolay Aleksandrov err_vlan_add: 126107bc588fSIdo Schimmel RCU_INIT_POINTER(p->vlgrp, NULL); 126207bc588fSIdo Schimmel synchronize_rcu(); 1263efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 1264efa5356bSRoopa Prabhu err_tunnel_init: 1265efa5356bSRoopa Prabhu rhashtable_destroy(&vg->vlan_hash); 12662594e906SNikolay Aleksandrov err_rhtbl: 1267df2c4334SYotam Gigi err_vlan_enabled: 1268263344e6SNikolay Aleksandrov kfree(vg); 12692594e906SNikolay Aleksandrov 12702594e906SNikolay Aleksandrov goto out; 12718580e211SToshiaki Makita } 12728580e211SToshiaki Makita 12738adff41cSToshiaki Makita /* Must be protected by RTNL. 12748adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 1275f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 12768adff41cSToshiaki Makita */ 1277f418af63SNikolay Aleksandrov int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1278169327d5SPetr Machata bool *changed, struct netlink_ext_ack *extack) 1279243a2e63SVlad Yasevich { 12802594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 12812594e906SNikolay Aleksandrov int ret; 1282243a2e63SVlad Yasevich 1283243a2e63SVlad Yasevich ASSERT_RTNL(); 1284243a2e63SVlad Yasevich 1285f418af63SNikolay Aleksandrov *changed = false; 1286907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(nbp_vlan_group(port), vid); 12872594e906SNikolay Aleksandrov if (vlan) { 128827c5f74cSVladimir Oltean bool would_change = __vlan_flags_would_change(vlan, flags); 128927c5f74cSVladimir Oltean 129027c5f74cSVladimir Oltean if (would_change) { 12917fbac984SIdo Schimmel /* Pass the flags to the hardware bridge */ 1292*8d23a54fSVladimir Oltean ret = br_switchdev_port_vlan_add(port->dev, vid, flags, 1293*8d23a54fSVladimir Oltean true, extack); 12947fbac984SIdo Schimmel if (ret && ret != -EOPNOTSUPP) 12957fbac984SIdo Schimmel return ret; 129627c5f74cSVladimir Oltean } 129727c5f74cSVladimir Oltean 129827c5f74cSVladimir Oltean __vlan_flags_commit(vlan, flags); 129927c5f74cSVladimir Oltean *changed = would_change; 1300f418af63SNikolay Aleksandrov 13012594e906SNikolay Aleksandrov return 0; 1302243a2e63SVlad Yasevich } 1303243a2e63SVlad Yasevich 13042594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 13052594e906SNikolay Aleksandrov if (!vlan) 13062594e906SNikolay Aleksandrov return -ENOMEM; 1307243a2e63SVlad Yasevich 13082594e906SNikolay Aleksandrov vlan->vid = vid; 13092594e906SNikolay Aleksandrov vlan->port = port; 1310169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 13112594e906SNikolay Aleksandrov if (ret) 13122594e906SNikolay Aleksandrov kfree(vlan); 1313f418af63SNikolay Aleksandrov else 1314f418af63SNikolay Aleksandrov *changed = true; 1315243a2e63SVlad Yasevich 13162594e906SNikolay Aleksandrov return ret; 1317243a2e63SVlad Yasevich } 1318243a2e63SVlad Yasevich 13198adff41cSToshiaki Makita /* Must be protected by RTNL. 13208adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 13218adff41cSToshiaki Makita */ 1322243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1323243a2e63SVlad Yasevich { 13242594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 1325243a2e63SVlad Yasevich 1326243a2e63SVlad Yasevich ASSERT_RTNL(); 1327243a2e63SVlad Yasevich 1328907b1e6eSNikolay Aleksandrov v = br_vlan_find(nbp_vlan_group(port), vid); 13292594e906SNikolay Aleksandrov if (!v) 13302594e906SNikolay Aleksandrov return -ENOENT; 1331424bb9c9SToshiaki Makita br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); 13321ea2d020SNikolay Aleksandrov br_fdb_delete_by_port(port->br, port, vid, 0); 1333bc9a25d2SVlad Yasevich 13342594e906SNikolay Aleksandrov return __vlan_del(v); 1335243a2e63SVlad Yasevich } 1336243a2e63SVlad Yasevich 1337243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 1338243a2e63SVlad Yasevich { 1339f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 1340f409d0edSNikolay Aleksandrov 1341243a2e63SVlad Yasevich ASSERT_RTNL(); 1342243a2e63SVlad Yasevich 1343f409d0edSNikolay Aleksandrov vg = nbp_vlan_group(port); 1344f545923bSNikolay Aleksandrov __vlan_flush(port->br, port, vg); 1345f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(port->vlgrp, NULL); 1346f409d0edSNikolay Aleksandrov synchronize_rcu(); 1347f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 13485be5a2dfSVlad Yasevich } 1349a60c0903SNikolay Aleksandrov 1350a60c0903SNikolay Aleksandrov void br_vlan_get_stats(const struct net_bridge_vlan *v, 1351281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats) 1352a60c0903SNikolay Aleksandrov { 1353a60c0903SNikolay Aleksandrov int i; 1354a60c0903SNikolay Aleksandrov 1355a60c0903SNikolay Aleksandrov memset(stats, 0, sizeof(*stats)); 1356a60c0903SNikolay Aleksandrov for_each_possible_cpu(i) { 1357a60c0903SNikolay Aleksandrov u64 rxpackets, rxbytes, txpackets, txbytes; 1358281cc284SHeiner Kallweit struct pcpu_sw_netstats *cpu_stats; 1359a60c0903SNikolay Aleksandrov unsigned int start; 1360a60c0903SNikolay Aleksandrov 1361a60c0903SNikolay Aleksandrov cpu_stats = per_cpu_ptr(v->stats, i); 1362a60c0903SNikolay Aleksandrov do { 1363a60c0903SNikolay Aleksandrov start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); 1364a60c0903SNikolay Aleksandrov rxpackets = cpu_stats->rx_packets; 1365a60c0903SNikolay Aleksandrov rxbytes = cpu_stats->rx_bytes; 1366a60c0903SNikolay Aleksandrov txbytes = cpu_stats->tx_bytes; 1367a60c0903SNikolay Aleksandrov txpackets = cpu_stats->tx_packets; 1368a60c0903SNikolay Aleksandrov } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); 1369a60c0903SNikolay Aleksandrov 1370a60c0903SNikolay Aleksandrov stats->rx_packets += rxpackets; 1371a60c0903SNikolay Aleksandrov stats->rx_bytes += rxbytes; 1372a60c0903SNikolay Aleksandrov stats->tx_bytes += txbytes; 1373a60c0903SNikolay Aleksandrov stats->tx_packets += txpackets; 1374a60c0903SNikolay Aleksandrov } 1375a60c0903SNikolay Aleksandrov } 13764d4fd361SPetr Machata 137799f62a74SVladimir Oltean int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 13784d4fd361SPetr Machata { 13794d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 138099f62a74SVladimir Oltean struct net_bridge_port *p; 13814d4fd361SPetr Machata 138299f62a74SVladimir Oltean ASSERT_RTNL(); 138399f62a74SVladimir Oltean p = br_port_get_check_rtnl(dev); 13845a6db04cSIdo Schimmel if (p) 13855a6db04cSIdo Schimmel vg = nbp_vlan_group(p); 13865a6db04cSIdo Schimmel else if (netif_is_bridge_master(dev)) 13874d4fd361SPetr Machata vg = br_vlan_group(netdev_priv(dev)); 13884d4fd361SPetr Machata else 13894d4fd361SPetr Machata return -EINVAL; 13904d4fd361SPetr Machata 13914d4fd361SPetr Machata *p_pvid = br_get_pvid(vg); 13924d4fd361SPetr Machata return 0; 13934d4fd361SPetr Machata } 13944d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_pvid); 13954d4fd361SPetr Machata 13967582f5b7SPablo Neira Ayuso int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 13977582f5b7SPablo Neira Ayuso { 139899f62a74SVladimir Oltean struct net_bridge_vlan_group *vg; 139999f62a74SVladimir Oltean struct net_bridge_port *p; 140099f62a74SVladimir Oltean 140199f62a74SVladimir Oltean p = br_port_get_check_rcu(dev); 140299f62a74SVladimir Oltean if (p) 140399f62a74SVladimir Oltean vg = nbp_vlan_group_rcu(p); 140499f62a74SVladimir Oltean else if (netif_is_bridge_master(dev)) 140599f62a74SVladimir Oltean vg = br_vlan_group_rcu(netdev_priv(dev)); 140699f62a74SVladimir Oltean else 140799f62a74SVladimir Oltean return -EINVAL; 140899f62a74SVladimir Oltean 140999f62a74SVladimir Oltean *p_pvid = br_get_pvid(vg); 141099f62a74SVladimir Oltean return 0; 14117582f5b7SPablo Neira Ayuso } 14127582f5b7SPablo Neira Ayuso EXPORT_SYMBOL_GPL(br_vlan_get_pvid_rcu); 14137582f5b7SPablo Neira Ayuso 1414bcf2766bSFelix Fietkau void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1415bcf2766bSFelix Fietkau struct net_device_path_ctx *ctx, 1416bcf2766bSFelix Fietkau struct net_device_path *path) 1417bcf2766bSFelix Fietkau { 1418bcf2766bSFelix Fietkau struct net_bridge_vlan_group *vg; 1419bcf2766bSFelix Fietkau int idx = ctx->num_vlans - 1; 1420bcf2766bSFelix Fietkau u16 vid; 1421bcf2766bSFelix Fietkau 1422bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_KEEP; 1423bcf2766bSFelix Fietkau 1424bcf2766bSFelix Fietkau if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 1425bcf2766bSFelix Fietkau return; 1426bcf2766bSFelix Fietkau 1427bcf2766bSFelix Fietkau vg = br_vlan_group(br); 1428bcf2766bSFelix Fietkau 1429bcf2766bSFelix Fietkau if (idx >= 0 && 1430bcf2766bSFelix Fietkau ctx->vlan[idx].proto == br->vlan_proto) { 1431bcf2766bSFelix Fietkau vid = ctx->vlan[idx].id; 1432bcf2766bSFelix Fietkau } else { 1433bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_TAG; 1434bcf2766bSFelix Fietkau vid = br_get_pvid(vg); 1435bcf2766bSFelix Fietkau } 1436bcf2766bSFelix Fietkau 1437bcf2766bSFelix Fietkau path->bridge.vlan_id = vid; 1438bcf2766bSFelix Fietkau path->bridge.vlan_proto = br->vlan_proto; 1439bcf2766bSFelix Fietkau } 1440bcf2766bSFelix Fietkau 1441bcf2766bSFelix Fietkau int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1442bcf2766bSFelix Fietkau struct net_bridge_port *dst, 1443bcf2766bSFelix Fietkau struct net_device_path *path) 1444bcf2766bSFelix Fietkau { 1445bcf2766bSFelix Fietkau struct net_bridge_vlan_group *vg; 1446bcf2766bSFelix Fietkau struct net_bridge_vlan *v; 1447bcf2766bSFelix Fietkau 1448bcf2766bSFelix Fietkau if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 1449bcf2766bSFelix Fietkau return 0; 1450bcf2766bSFelix Fietkau 1451bcf2766bSFelix Fietkau vg = nbp_vlan_group_rcu(dst); 1452bcf2766bSFelix Fietkau v = br_vlan_find(vg, path->bridge.vlan_id); 1453bcf2766bSFelix Fietkau if (!v || !br_vlan_should_use(v)) 1454bcf2766bSFelix Fietkau return -EINVAL; 1455bcf2766bSFelix Fietkau 1456bcf2766bSFelix Fietkau if (!(v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 1457bcf2766bSFelix Fietkau return 0; 1458bcf2766bSFelix Fietkau 1459bcf2766bSFelix Fietkau if (path->bridge.vlan_mode == DEV_PATH_BR_VLAN_TAG) 1460bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_KEEP; 146126267bf9SFelix Fietkau else if (v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV) 146226267bf9SFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_UNTAG_HW; 1463bcf2766bSFelix Fietkau else 1464bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_UNTAG; 1465bcf2766bSFelix Fietkau 1466bcf2766bSFelix Fietkau return 0; 1467bcf2766bSFelix Fietkau } 1468bcf2766bSFelix Fietkau 14694d4fd361SPetr Machata int br_vlan_get_info(const struct net_device *dev, u16 vid, 14704d4fd361SPetr Machata struct bridge_vlan_info *p_vinfo) 14714d4fd361SPetr Machata { 14724d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 14734d4fd361SPetr Machata struct net_bridge_vlan *v; 14744d4fd361SPetr Machata struct net_bridge_port *p; 14754d4fd361SPetr Machata 14764d4fd361SPetr Machata ASSERT_RTNL(); 14774d4fd361SPetr Machata p = br_port_get_check_rtnl(dev); 14784d4fd361SPetr Machata if (p) 14794d4fd361SPetr Machata vg = nbp_vlan_group(p); 14802b18d79eSPetr Machata else if (netif_is_bridge_master(dev)) 14812b18d79eSPetr Machata vg = br_vlan_group(netdev_priv(dev)); 14824d4fd361SPetr Machata else 14834d4fd361SPetr Machata return -EINVAL; 14844d4fd361SPetr Machata 14854d4fd361SPetr Machata v = br_vlan_find(vg, vid); 14864d4fd361SPetr Machata if (!v) 14874d4fd361SPetr Machata return -ENOENT; 14884d4fd361SPetr Machata 14894d4fd361SPetr Machata p_vinfo->vid = vid; 14904d4fd361SPetr Machata p_vinfo->flags = v->flags; 1491f40d9b20SVladimir Oltean if (vid == br_get_pvid(vg)) 1492f40d9b20SVladimir Oltean p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID; 14934d4fd361SPetr Machata return 0; 14944d4fd361SPetr Machata } 14954d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_info); 14969c0ec2e7SMike Manning 1497ee80dd2eSVladimir Oltean int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 1498ee80dd2eSVladimir Oltean struct bridge_vlan_info *p_vinfo) 1499ee80dd2eSVladimir Oltean { 1500ee80dd2eSVladimir Oltean struct net_bridge_vlan_group *vg; 1501ee80dd2eSVladimir Oltean struct net_bridge_vlan *v; 1502ee80dd2eSVladimir Oltean struct net_bridge_port *p; 1503ee80dd2eSVladimir Oltean 1504ee80dd2eSVladimir Oltean p = br_port_get_check_rcu(dev); 1505ee80dd2eSVladimir Oltean if (p) 1506ee80dd2eSVladimir Oltean vg = nbp_vlan_group_rcu(p); 1507ee80dd2eSVladimir Oltean else if (netif_is_bridge_master(dev)) 1508ee80dd2eSVladimir Oltean vg = br_vlan_group_rcu(netdev_priv(dev)); 1509ee80dd2eSVladimir Oltean else 1510ee80dd2eSVladimir Oltean return -EINVAL; 1511ee80dd2eSVladimir Oltean 1512ee80dd2eSVladimir Oltean v = br_vlan_find(vg, vid); 1513ee80dd2eSVladimir Oltean if (!v) 1514ee80dd2eSVladimir Oltean return -ENOENT; 1515ee80dd2eSVladimir Oltean 1516ee80dd2eSVladimir Oltean p_vinfo->vid = vid; 1517ee80dd2eSVladimir Oltean p_vinfo->flags = v->flags; 1518ee80dd2eSVladimir Oltean if (vid == br_get_pvid(vg)) 1519ee80dd2eSVladimir Oltean p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID; 1520ee80dd2eSVladimir Oltean return 0; 1521ee80dd2eSVladimir Oltean } 1522ee80dd2eSVladimir Oltean EXPORT_SYMBOL_GPL(br_vlan_get_info_rcu); 1523ee80dd2eSVladimir Oltean 15249c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev(const struct net_device *dev) 15259c0ec2e7SMike Manning { 15269c0ec2e7SMike Manning return is_vlan_dev(dev) && 15279c0ec2e7SMike Manning !!(vlan_dev_priv(dev)->flags & VLAN_FLAG_BRIDGE_BINDING); 15289c0ec2e7SMike Manning } 15299c0ec2e7SMike Manning 15309c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev_fn(struct net_device *dev, 1531eff74233STaehee Yoo __always_unused struct netdev_nested_priv *priv) 15329c0ec2e7SMike Manning { 15339c0ec2e7SMike Manning return br_vlan_is_bind_vlan_dev(dev); 15349c0ec2e7SMike Manning } 15359c0ec2e7SMike Manning 15369c0ec2e7SMike Manning static bool br_vlan_has_upper_bind_vlan_dev(struct net_device *dev) 15379c0ec2e7SMike Manning { 15389c0ec2e7SMike Manning int found; 15399c0ec2e7SMike Manning 15409c0ec2e7SMike Manning rcu_read_lock(); 15419c0ec2e7SMike Manning found = netdev_walk_all_upper_dev_rcu(dev, br_vlan_is_bind_vlan_dev_fn, 15429c0ec2e7SMike Manning NULL); 15439c0ec2e7SMike Manning rcu_read_unlock(); 15449c0ec2e7SMike Manning 15459c0ec2e7SMike Manning return !!found; 15469c0ec2e7SMike Manning } 15479c0ec2e7SMike Manning 15489c0ec2e7SMike Manning struct br_vlan_bind_walk_data { 15499c0ec2e7SMike Manning u16 vid; 15509c0ec2e7SMike Manning struct net_device *result; 15519c0ec2e7SMike Manning }; 15529c0ec2e7SMike Manning 15539c0ec2e7SMike Manning static int br_vlan_match_bind_vlan_dev_fn(struct net_device *dev, 1554eff74233STaehee Yoo struct netdev_nested_priv *priv) 15559c0ec2e7SMike Manning { 1556eff74233STaehee Yoo struct br_vlan_bind_walk_data *data = priv->data; 15579c0ec2e7SMike Manning int found = 0; 15589c0ec2e7SMike Manning 15599c0ec2e7SMike Manning if (br_vlan_is_bind_vlan_dev(dev) && 15609c0ec2e7SMike Manning vlan_dev_priv(dev)->vlan_id == data->vid) { 15619c0ec2e7SMike Manning data->result = dev; 15629c0ec2e7SMike Manning found = 1; 15639c0ec2e7SMike Manning } 15649c0ec2e7SMike Manning 15659c0ec2e7SMike Manning return found; 15669c0ec2e7SMike Manning } 15679c0ec2e7SMike Manning 15689c0ec2e7SMike Manning static struct net_device * 15699c0ec2e7SMike Manning br_vlan_get_upper_bind_vlan_dev(struct net_device *dev, u16 vid) 15709c0ec2e7SMike Manning { 15719c0ec2e7SMike Manning struct br_vlan_bind_walk_data data = { 15729c0ec2e7SMike Manning .vid = vid, 15739c0ec2e7SMike Manning }; 1574eff74233STaehee Yoo struct netdev_nested_priv priv = { 1575eff74233STaehee Yoo .data = (void *)&data, 1576eff74233STaehee Yoo }; 15779c0ec2e7SMike Manning 15789c0ec2e7SMike Manning rcu_read_lock(); 15799c0ec2e7SMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_match_bind_vlan_dev_fn, 1580eff74233STaehee Yoo &priv); 15819c0ec2e7SMike Manning rcu_read_unlock(); 15829c0ec2e7SMike Manning 15839c0ec2e7SMike Manning return data.result; 15849c0ec2e7SMike Manning } 15859c0ec2e7SMike Manning 15869c0ec2e7SMike Manning static bool br_vlan_is_dev_up(const struct net_device *dev) 15879c0ec2e7SMike Manning { 15889c0ec2e7SMike Manning return !!(dev->flags & IFF_UP) && netif_oper_up(dev); 15899c0ec2e7SMike Manning } 15909c0ec2e7SMike Manning 15919c0ec2e7SMike Manning static void br_vlan_set_vlan_dev_state(const struct net_bridge *br, 15929c0ec2e7SMike Manning struct net_device *vlan_dev) 15939c0ec2e7SMike Manning { 15949c0ec2e7SMike Manning u16 vid = vlan_dev_priv(vlan_dev)->vlan_id; 15959c0ec2e7SMike Manning struct net_bridge_vlan_group *vg; 15969c0ec2e7SMike Manning struct net_bridge_port *p; 15979c0ec2e7SMike Manning bool has_carrier = false; 15989c0ec2e7SMike Manning 15998e1acd4fSMike Manning if (!netif_carrier_ok(br->dev)) { 16008e1acd4fSMike Manning netif_carrier_off(vlan_dev); 16018e1acd4fSMike Manning return; 16028e1acd4fSMike Manning } 16038e1acd4fSMike Manning 16049c0ec2e7SMike Manning list_for_each_entry(p, &br->port_list, list) { 16059c0ec2e7SMike Manning vg = nbp_vlan_group(p); 16069c0ec2e7SMike Manning if (br_vlan_find(vg, vid) && br_vlan_is_dev_up(p->dev)) { 16079c0ec2e7SMike Manning has_carrier = true; 16089c0ec2e7SMike Manning break; 16099c0ec2e7SMike Manning } 16109c0ec2e7SMike Manning } 16119c0ec2e7SMike Manning 16129c0ec2e7SMike Manning if (has_carrier) 16139c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 16149c0ec2e7SMike Manning else 16159c0ec2e7SMike Manning netif_carrier_off(vlan_dev); 16169c0ec2e7SMike Manning } 16179c0ec2e7SMike Manning 16189c0ec2e7SMike Manning static void br_vlan_set_all_vlan_dev_state(struct net_bridge_port *p) 16199c0ec2e7SMike Manning { 16209c0ec2e7SMike Manning struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 16219c0ec2e7SMike Manning struct net_bridge_vlan *vlan; 16229c0ec2e7SMike Manning struct net_device *vlan_dev; 16239c0ec2e7SMike Manning 16249c0ec2e7SMike Manning list_for_each_entry(vlan, &vg->vlan_list, vlist) { 16259c0ec2e7SMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, 16269c0ec2e7SMike Manning vlan->vid); 16279c0ec2e7SMike Manning if (vlan_dev) { 16288e1acd4fSMike Manning if (br_vlan_is_dev_up(p->dev)) { 16298e1acd4fSMike Manning if (netif_carrier_ok(p->br->dev)) 16309c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 16318e1acd4fSMike Manning } else { 16329c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 16339c0ec2e7SMike Manning } 16349c0ec2e7SMike Manning } 16359c0ec2e7SMike Manning } 16368e1acd4fSMike Manning } 16379c0ec2e7SMike Manning 16389c0ec2e7SMike Manning static void br_vlan_upper_change(struct net_device *dev, 16399c0ec2e7SMike Manning struct net_device *upper_dev, 16409c0ec2e7SMike Manning bool linking) 16419c0ec2e7SMike Manning { 16429c0ec2e7SMike Manning struct net_bridge *br = netdev_priv(dev); 16439c0ec2e7SMike Manning 16449c0ec2e7SMike Manning if (!br_vlan_is_bind_vlan_dev(upper_dev)) 16459c0ec2e7SMike Manning return; 16469c0ec2e7SMike Manning 16479c0ec2e7SMike Manning if (linking) { 16489c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(br, upper_dev); 16499c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, true); 16509c0ec2e7SMike Manning } else { 16519c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, 16529c0ec2e7SMike Manning br_vlan_has_upper_bind_vlan_dev(dev)); 16539c0ec2e7SMike Manning } 16549c0ec2e7SMike Manning } 16559c0ec2e7SMike Manning 16568e1acd4fSMike Manning struct br_vlan_link_state_walk_data { 16578e1acd4fSMike Manning struct net_bridge *br; 16588e1acd4fSMike Manning }; 16598e1acd4fSMike Manning 16608e1acd4fSMike Manning static int br_vlan_link_state_change_fn(struct net_device *vlan_dev, 1661eff74233STaehee Yoo struct netdev_nested_priv *priv) 16628e1acd4fSMike Manning { 1663eff74233STaehee Yoo struct br_vlan_link_state_walk_data *data = priv->data; 16648e1acd4fSMike Manning 16658e1acd4fSMike Manning if (br_vlan_is_bind_vlan_dev(vlan_dev)) 16668e1acd4fSMike Manning br_vlan_set_vlan_dev_state(data->br, vlan_dev); 16678e1acd4fSMike Manning 16688e1acd4fSMike Manning return 0; 16698e1acd4fSMike Manning } 16708e1acd4fSMike Manning 16718e1acd4fSMike Manning static void br_vlan_link_state_change(struct net_device *dev, 16728e1acd4fSMike Manning struct net_bridge *br) 16738e1acd4fSMike Manning { 16748e1acd4fSMike Manning struct br_vlan_link_state_walk_data data = { 16758e1acd4fSMike Manning .br = br 16768e1acd4fSMike Manning }; 1677eff74233STaehee Yoo struct netdev_nested_priv priv = { 1678eff74233STaehee Yoo .data = (void *)&data, 1679eff74233STaehee Yoo }; 16808e1acd4fSMike Manning 16818e1acd4fSMike Manning rcu_read_lock(); 16828e1acd4fSMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_link_state_change_fn, 1683eff74233STaehee Yoo &priv); 16848e1acd4fSMike Manning rcu_read_unlock(); 16858e1acd4fSMike Manning } 16868e1acd4fSMike Manning 16879c0ec2e7SMike Manning /* Must be protected by RTNL. */ 168880900acdSMike Manning static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid) 168980900acdSMike Manning { 169080900acdSMike Manning struct net_device *vlan_dev; 169180900acdSMike Manning 169280900acdSMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 169380900acdSMike Manning return; 169480900acdSMike Manning 169580900acdSMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, vid); 169680900acdSMike Manning if (vlan_dev) 169780900acdSMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 169880900acdSMike Manning } 169980900acdSMike Manning 170080900acdSMike Manning /* Must be protected by RTNL. */ 1701091adf9bSNikolay Aleksandrov int br_vlan_bridge_event(struct net_device *dev, unsigned long event, void *ptr) 17029c0ec2e7SMike Manning { 17039c0ec2e7SMike Manning struct netdev_notifier_changeupper_info *info; 1704091adf9bSNikolay Aleksandrov struct net_bridge *br = netdev_priv(dev); 1705f545923bSNikolay Aleksandrov int vlcmd = 0, ret = 0; 1706f545923bSNikolay Aleksandrov bool changed = false; 17079c0ec2e7SMike Manning 17089c0ec2e7SMike Manning switch (event) { 1709091adf9bSNikolay Aleksandrov case NETDEV_REGISTER: 1710091adf9bSNikolay Aleksandrov ret = br_vlan_add(br, br->default_pvid, 1711091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1712091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1713091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, &changed, NULL); 1714f545923bSNikolay Aleksandrov vlcmd = RTM_NEWVLAN; 1715091adf9bSNikolay Aleksandrov break; 1716091adf9bSNikolay Aleksandrov case NETDEV_UNREGISTER: 1717f545923bSNikolay Aleksandrov changed = !br_vlan_delete(br, br->default_pvid); 1718f545923bSNikolay Aleksandrov vlcmd = RTM_DELVLAN; 1719091adf9bSNikolay Aleksandrov break; 17209c0ec2e7SMike Manning case NETDEV_CHANGEUPPER: 17219c0ec2e7SMike Manning info = ptr; 17229c0ec2e7SMike Manning br_vlan_upper_change(dev, info->upper_dev, info->linking); 17239c0ec2e7SMike Manning break; 17248e1acd4fSMike Manning 17258e1acd4fSMike Manning case NETDEV_CHANGE: 17268e1acd4fSMike Manning case NETDEV_UP: 17278e1acd4fSMike Manning if (!br_opt_get(br, BROPT_VLAN_BRIDGE_BINDING)) 1728091adf9bSNikolay Aleksandrov break; 17298e1acd4fSMike Manning br_vlan_link_state_change(dev, br); 17308e1acd4fSMike Manning break; 17319c0ec2e7SMike Manning } 1732f545923bSNikolay Aleksandrov if (changed) 1733f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, br->default_pvid, 0, vlcmd); 1734091adf9bSNikolay Aleksandrov 1735091adf9bSNikolay Aleksandrov return ret; 17369c0ec2e7SMike Manning } 17379c0ec2e7SMike Manning 17389c0ec2e7SMike Manning /* Must be protected by RTNL. */ 17399c0ec2e7SMike Manning void br_vlan_port_event(struct net_bridge_port *p, unsigned long event) 17409c0ec2e7SMike Manning { 17419c0ec2e7SMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 17429c0ec2e7SMike Manning return; 17439c0ec2e7SMike Manning 17449c0ec2e7SMike Manning switch (event) { 17459c0ec2e7SMike Manning case NETDEV_CHANGE: 17469c0ec2e7SMike Manning case NETDEV_DOWN: 17479c0ec2e7SMike Manning case NETDEV_UP: 17489c0ec2e7SMike Manning br_vlan_set_all_vlan_dev_state(p); 17499c0ec2e7SMike Manning break; 17509c0ec2e7SMike Manning } 17519c0ec2e7SMike Manning } 17528dcea187SNikolay Aleksandrov 175356d09976SNikolay Aleksandrov static bool br_vlan_stats_fill(struct sk_buff *skb, 175456d09976SNikolay Aleksandrov const struct net_bridge_vlan *v) 175556d09976SNikolay Aleksandrov { 1756281cc284SHeiner Kallweit struct pcpu_sw_netstats stats; 175756d09976SNikolay Aleksandrov struct nlattr *nest; 175856d09976SNikolay Aleksandrov 175956d09976SNikolay Aleksandrov nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY_STATS); 176056d09976SNikolay Aleksandrov if (!nest) 176156d09976SNikolay Aleksandrov return false; 176256d09976SNikolay Aleksandrov 176356d09976SNikolay Aleksandrov br_vlan_get_stats(v, &stats); 176456d09976SNikolay Aleksandrov if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_BYTES, stats.rx_bytes, 176556d09976SNikolay Aleksandrov BRIDGE_VLANDB_STATS_PAD) || 176656d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_PACKETS, 176756d09976SNikolay Aleksandrov stats.rx_packets, BRIDGE_VLANDB_STATS_PAD) || 176856d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_BYTES, stats.tx_bytes, 176956d09976SNikolay Aleksandrov BRIDGE_VLANDB_STATS_PAD) || 177056d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_PACKETS, 177156d09976SNikolay Aleksandrov stats.tx_packets, BRIDGE_VLANDB_STATS_PAD)) 177256d09976SNikolay Aleksandrov goto out_err; 177356d09976SNikolay Aleksandrov 177456d09976SNikolay Aleksandrov nla_nest_end(skb, nest); 177556d09976SNikolay Aleksandrov 177656d09976SNikolay Aleksandrov return true; 177756d09976SNikolay Aleksandrov 177856d09976SNikolay Aleksandrov out_err: 177956d09976SNikolay Aleksandrov nla_nest_cancel(skb, nest); 178056d09976SNikolay Aleksandrov return false; 178156d09976SNikolay Aleksandrov } 178256d09976SNikolay Aleksandrov 17837a53e718SNikolay Aleksandrov /* v_opts is used to dump the options which must be equal in the whole range */ 17840ab55879SNikolay Aleksandrov static bool br_vlan_fill_vids(struct sk_buff *skb, u16 vid, u16 vid_range, 17857a53e718SNikolay Aleksandrov const struct net_bridge_vlan *v_opts, 178656d09976SNikolay Aleksandrov u16 flags, 178756d09976SNikolay Aleksandrov bool dump_stats) 17888dcea187SNikolay Aleksandrov { 17898dcea187SNikolay Aleksandrov struct bridge_vlan_info info; 17908dcea187SNikolay Aleksandrov struct nlattr *nest; 17918dcea187SNikolay Aleksandrov 17928dcea187SNikolay Aleksandrov nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY); 17938dcea187SNikolay Aleksandrov if (!nest) 17948dcea187SNikolay Aleksandrov return false; 17958dcea187SNikolay Aleksandrov 17968dcea187SNikolay Aleksandrov memset(&info, 0, sizeof(info)); 17978dcea187SNikolay Aleksandrov info.vid = vid; 17988dcea187SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 17998dcea187SNikolay Aleksandrov info.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 18008dcea187SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_PVID) 18018dcea187SNikolay Aleksandrov info.flags |= BRIDGE_VLAN_INFO_PVID; 18028dcea187SNikolay Aleksandrov 18038dcea187SNikolay Aleksandrov if (nla_put(skb, BRIDGE_VLANDB_ENTRY_INFO, sizeof(info), &info)) 18048dcea187SNikolay Aleksandrov goto out_err; 18058dcea187SNikolay Aleksandrov 18060ab55879SNikolay Aleksandrov if (vid_range && vid < vid_range && 18070ab55879SNikolay Aleksandrov !(flags & BRIDGE_VLAN_INFO_PVID) && 18080ab55879SNikolay Aleksandrov nla_put_u16(skb, BRIDGE_VLANDB_ENTRY_RANGE, vid_range)) 18090ab55879SNikolay Aleksandrov goto out_err; 18100ab55879SNikolay Aleksandrov 181156d09976SNikolay Aleksandrov if (v_opts) { 181256d09976SNikolay Aleksandrov if (!br_vlan_opts_fill(skb, v_opts)) 18137a53e718SNikolay Aleksandrov goto out_err; 18147a53e718SNikolay Aleksandrov 181556d09976SNikolay Aleksandrov if (dump_stats && !br_vlan_stats_fill(skb, v_opts)) 181656d09976SNikolay Aleksandrov goto out_err; 181756d09976SNikolay Aleksandrov } 181856d09976SNikolay Aleksandrov 18198dcea187SNikolay Aleksandrov nla_nest_end(skb, nest); 18208dcea187SNikolay Aleksandrov 18218dcea187SNikolay Aleksandrov return true; 18228dcea187SNikolay Aleksandrov 18238dcea187SNikolay Aleksandrov out_err: 18248dcea187SNikolay Aleksandrov nla_nest_cancel(skb, nest); 18258dcea187SNikolay Aleksandrov return false; 18268dcea187SNikolay Aleksandrov } 18278dcea187SNikolay Aleksandrov 1828cf5bddb9SNikolay Aleksandrov static size_t rtnl_vlan_nlmsg_size(void) 1829cf5bddb9SNikolay Aleksandrov { 1830cf5bddb9SNikolay Aleksandrov return NLMSG_ALIGN(sizeof(struct br_vlan_msg)) 1831cf5bddb9SNikolay Aleksandrov + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY */ 1832cf5bddb9SNikolay Aleksandrov + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_ENTRY_RANGE */ 18337a53e718SNikolay Aleksandrov + nla_total_size(sizeof(struct bridge_vlan_info)) /* BRIDGE_VLANDB_ENTRY_INFO */ 18347a53e718SNikolay Aleksandrov + br_vlan_opts_nl_size(); /* bridge vlan options */ 1835cf5bddb9SNikolay Aleksandrov } 1836cf5bddb9SNikolay Aleksandrov 1837cf5bddb9SNikolay Aleksandrov void br_vlan_notify(const struct net_bridge *br, 1838cf5bddb9SNikolay Aleksandrov const struct net_bridge_port *p, 1839cf5bddb9SNikolay Aleksandrov u16 vid, u16 vid_range, 1840cf5bddb9SNikolay Aleksandrov int cmd) 1841cf5bddb9SNikolay Aleksandrov { 1842cf5bddb9SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 18437a53e718SNikolay Aleksandrov struct net_bridge_vlan *v = NULL; 1844cf5bddb9SNikolay Aleksandrov struct br_vlan_msg *bvm; 1845cf5bddb9SNikolay Aleksandrov struct nlmsghdr *nlh; 1846cf5bddb9SNikolay Aleksandrov struct sk_buff *skb; 1847cf5bddb9SNikolay Aleksandrov int err = -ENOBUFS; 1848cf5bddb9SNikolay Aleksandrov struct net *net; 1849cf5bddb9SNikolay Aleksandrov u16 flags = 0; 1850cf5bddb9SNikolay Aleksandrov int ifindex; 1851cf5bddb9SNikolay Aleksandrov 1852cf5bddb9SNikolay Aleksandrov /* right now notifications are done only with rtnl held */ 1853cf5bddb9SNikolay Aleksandrov ASSERT_RTNL(); 1854cf5bddb9SNikolay Aleksandrov 1855cf5bddb9SNikolay Aleksandrov if (p) { 1856cf5bddb9SNikolay Aleksandrov ifindex = p->dev->ifindex; 1857cf5bddb9SNikolay Aleksandrov vg = nbp_vlan_group(p); 1858cf5bddb9SNikolay Aleksandrov net = dev_net(p->dev); 1859cf5bddb9SNikolay Aleksandrov } else { 1860cf5bddb9SNikolay Aleksandrov ifindex = br->dev->ifindex; 1861cf5bddb9SNikolay Aleksandrov vg = br_vlan_group(br); 1862cf5bddb9SNikolay Aleksandrov net = dev_net(br->dev); 1863cf5bddb9SNikolay Aleksandrov } 1864cf5bddb9SNikolay Aleksandrov 1865cf5bddb9SNikolay Aleksandrov skb = nlmsg_new(rtnl_vlan_nlmsg_size(), GFP_KERNEL); 1866cf5bddb9SNikolay Aleksandrov if (!skb) 1867cf5bddb9SNikolay Aleksandrov goto out_err; 1868cf5bddb9SNikolay Aleksandrov 1869cf5bddb9SNikolay Aleksandrov err = -EMSGSIZE; 1870cf5bddb9SNikolay Aleksandrov nlh = nlmsg_put(skb, 0, 0, cmd, sizeof(*bvm), 0); 1871cf5bddb9SNikolay Aleksandrov if (!nlh) 1872cf5bddb9SNikolay Aleksandrov goto out_err; 1873cf5bddb9SNikolay Aleksandrov bvm = nlmsg_data(nlh); 1874cf5bddb9SNikolay Aleksandrov memset(bvm, 0, sizeof(*bvm)); 1875cf5bddb9SNikolay Aleksandrov bvm->family = AF_BRIDGE; 1876cf5bddb9SNikolay Aleksandrov bvm->ifindex = ifindex; 1877cf5bddb9SNikolay Aleksandrov 1878cf5bddb9SNikolay Aleksandrov switch (cmd) { 1879cf5bddb9SNikolay Aleksandrov case RTM_NEWVLAN: 1880cf5bddb9SNikolay Aleksandrov /* need to find the vlan due to flags/options */ 1881cf5bddb9SNikolay Aleksandrov v = br_vlan_find(vg, vid); 1882cf5bddb9SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 1883cf5bddb9SNikolay Aleksandrov goto out_kfree; 1884cf5bddb9SNikolay Aleksandrov 1885cf5bddb9SNikolay Aleksandrov flags = v->flags; 1886cf5bddb9SNikolay Aleksandrov if (br_get_pvid(vg) == v->vid) 1887cf5bddb9SNikolay Aleksandrov flags |= BRIDGE_VLAN_INFO_PVID; 1888cf5bddb9SNikolay Aleksandrov break; 1889cf5bddb9SNikolay Aleksandrov case RTM_DELVLAN: 1890cf5bddb9SNikolay Aleksandrov break; 1891cf5bddb9SNikolay Aleksandrov default: 1892cf5bddb9SNikolay Aleksandrov goto out_kfree; 1893cf5bddb9SNikolay Aleksandrov } 1894cf5bddb9SNikolay Aleksandrov 189556d09976SNikolay Aleksandrov if (!br_vlan_fill_vids(skb, vid, vid_range, v, flags, false)) 1896cf5bddb9SNikolay Aleksandrov goto out_err; 1897cf5bddb9SNikolay Aleksandrov 1898cf5bddb9SNikolay Aleksandrov nlmsg_end(skb, nlh); 1899cf5bddb9SNikolay Aleksandrov rtnl_notify(skb, net, 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL); 1900cf5bddb9SNikolay Aleksandrov return; 1901cf5bddb9SNikolay Aleksandrov 1902cf5bddb9SNikolay Aleksandrov out_err: 1903cf5bddb9SNikolay Aleksandrov rtnl_set_sk_err(net, RTNLGRP_BRVLAN, err); 1904cf5bddb9SNikolay Aleksandrov out_kfree: 1905cf5bddb9SNikolay Aleksandrov kfree_skb(skb); 1906cf5bddb9SNikolay Aleksandrov } 1907cf5bddb9SNikolay Aleksandrov 19080ab55879SNikolay Aleksandrov /* check if v_curr can enter a range ending in range_end */ 1909a5d29ae2SNikolay Aleksandrov bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 19100ab55879SNikolay Aleksandrov const struct net_bridge_vlan *range_end) 19110ab55879SNikolay Aleksandrov { 19120ab55879SNikolay Aleksandrov return v_curr->vid - range_end->vid == 1 && 19137a53e718SNikolay Aleksandrov range_end->flags == v_curr->flags && 191499f7c5e0SNikolay Aleksandrov br_vlan_opts_eq_range(v_curr, range_end); 19150ab55879SNikolay Aleksandrov } 19160ab55879SNikolay Aleksandrov 19178dcea187SNikolay Aleksandrov static int br_vlan_dump_dev(const struct net_device *dev, 19188dcea187SNikolay Aleksandrov struct sk_buff *skb, 191956d09976SNikolay Aleksandrov struct netlink_callback *cb, 192056d09976SNikolay Aleksandrov u32 dump_flags) 19218dcea187SNikolay Aleksandrov { 19220ab55879SNikolay Aleksandrov struct net_bridge_vlan *v, *range_start = NULL, *range_end = NULL; 1923743a53d9SNikolay Aleksandrov bool dump_global = !!(dump_flags & BRIDGE_VLANDB_DUMPF_GLOBAL); 192456d09976SNikolay Aleksandrov bool dump_stats = !!(dump_flags & BRIDGE_VLANDB_DUMPF_STATS); 19258dcea187SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 19268dcea187SNikolay Aleksandrov int idx = 0, s_idx = cb->args[1]; 19278dcea187SNikolay Aleksandrov struct nlmsghdr *nlh = NULL; 19288dcea187SNikolay Aleksandrov struct net_bridge_port *p; 19298dcea187SNikolay Aleksandrov struct br_vlan_msg *bvm; 19308dcea187SNikolay Aleksandrov struct net_bridge *br; 19318dcea187SNikolay Aleksandrov int err = 0; 19328dcea187SNikolay Aleksandrov u16 pvid; 19338dcea187SNikolay Aleksandrov 19348dcea187SNikolay Aleksandrov if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) 19358dcea187SNikolay Aleksandrov return -EINVAL; 19368dcea187SNikolay Aleksandrov 19378dcea187SNikolay Aleksandrov if (netif_is_bridge_master(dev)) { 19388dcea187SNikolay Aleksandrov br = netdev_priv(dev); 19398dcea187SNikolay Aleksandrov vg = br_vlan_group_rcu(br); 19408dcea187SNikolay Aleksandrov p = NULL; 19418dcea187SNikolay Aleksandrov } else { 1942743a53d9SNikolay Aleksandrov /* global options are dumped only for bridge devices */ 1943743a53d9SNikolay Aleksandrov if (dump_global) 1944743a53d9SNikolay Aleksandrov return 0; 1945743a53d9SNikolay Aleksandrov 19468dcea187SNikolay Aleksandrov p = br_port_get_rcu(dev); 19478dcea187SNikolay Aleksandrov if (WARN_ON(!p)) 19488dcea187SNikolay Aleksandrov return -EINVAL; 19498dcea187SNikolay Aleksandrov vg = nbp_vlan_group_rcu(p); 19508dcea187SNikolay Aleksandrov br = p->br; 19518dcea187SNikolay Aleksandrov } 19528dcea187SNikolay Aleksandrov 19538dcea187SNikolay Aleksandrov if (!vg) 19548dcea187SNikolay Aleksandrov return 0; 19558dcea187SNikolay Aleksandrov 19568dcea187SNikolay Aleksandrov nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 19578dcea187SNikolay Aleksandrov RTM_NEWVLAN, sizeof(*bvm), NLM_F_MULTI); 19588dcea187SNikolay Aleksandrov if (!nlh) 19598dcea187SNikolay Aleksandrov return -EMSGSIZE; 19608dcea187SNikolay Aleksandrov bvm = nlmsg_data(nlh); 19618dcea187SNikolay Aleksandrov memset(bvm, 0, sizeof(*bvm)); 19628dcea187SNikolay Aleksandrov bvm->family = PF_BRIDGE; 19638dcea187SNikolay Aleksandrov bvm->ifindex = dev->ifindex; 19648dcea187SNikolay Aleksandrov pvid = br_get_pvid(vg); 19658dcea187SNikolay Aleksandrov 19660ab55879SNikolay Aleksandrov /* idx must stay at range's beginning until it is filled in */ 19678dcea187SNikolay Aleksandrov list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 1968743a53d9SNikolay Aleksandrov if (!dump_global && !br_vlan_should_use(v)) 19698dcea187SNikolay Aleksandrov continue; 19700ab55879SNikolay Aleksandrov if (idx < s_idx) { 19710ab55879SNikolay Aleksandrov idx++; 19720ab55879SNikolay Aleksandrov continue; 19730ab55879SNikolay Aleksandrov } 19740ab55879SNikolay Aleksandrov 19750ab55879SNikolay Aleksandrov if (!range_start) { 19760ab55879SNikolay Aleksandrov range_start = v; 19770ab55879SNikolay Aleksandrov range_end = v; 19780ab55879SNikolay Aleksandrov continue; 19790ab55879SNikolay Aleksandrov } 19800ab55879SNikolay Aleksandrov 1981743a53d9SNikolay Aleksandrov if (dump_global) { 1982743a53d9SNikolay Aleksandrov if (br_vlan_global_opts_can_enter_range(v, range_end)) 19836c4110d9SNikolay Aleksandrov goto update_end; 1984743a53d9SNikolay Aleksandrov if (!br_vlan_global_opts_fill(skb, range_start->vid, 1985743a53d9SNikolay Aleksandrov range_end->vid, 1986743a53d9SNikolay Aleksandrov range_start)) { 1987743a53d9SNikolay Aleksandrov err = -EMSGSIZE; 1988743a53d9SNikolay Aleksandrov break; 1989743a53d9SNikolay Aleksandrov } 1990743a53d9SNikolay Aleksandrov /* advance number of filled vlans */ 1991743a53d9SNikolay Aleksandrov idx += range_end->vid - range_start->vid + 1; 1992743a53d9SNikolay Aleksandrov 1993743a53d9SNikolay Aleksandrov range_start = v; 1994743a53d9SNikolay Aleksandrov } else if (dump_stats || v->vid == pvid || 199556d09976SNikolay Aleksandrov !br_vlan_can_enter_range(v, range_end)) { 199656d09976SNikolay Aleksandrov u16 vlan_flags = br_vlan_flags(range_start, pvid); 19970ab55879SNikolay Aleksandrov 19980ab55879SNikolay Aleksandrov if (!br_vlan_fill_vids(skb, range_start->vid, 19997a53e718SNikolay Aleksandrov range_end->vid, range_start, 200056d09976SNikolay Aleksandrov vlan_flags, dump_stats)) { 20018dcea187SNikolay Aleksandrov err = -EMSGSIZE; 20028dcea187SNikolay Aleksandrov break; 20038dcea187SNikolay Aleksandrov } 20040ab55879SNikolay Aleksandrov /* advance number of filled vlans */ 20050ab55879SNikolay Aleksandrov idx += range_end->vid - range_start->vid + 1; 20060ab55879SNikolay Aleksandrov 20070ab55879SNikolay Aleksandrov range_start = v; 20088dcea187SNikolay Aleksandrov } 20096c4110d9SNikolay Aleksandrov update_end: 20100ab55879SNikolay Aleksandrov range_end = v; 20110ab55879SNikolay Aleksandrov } 20120ab55879SNikolay Aleksandrov 20130ab55879SNikolay Aleksandrov /* err will be 0 and range_start will be set in 3 cases here: 20140ab55879SNikolay Aleksandrov * - first vlan (range_start == range_end) 20150ab55879SNikolay Aleksandrov * - last vlan (range_start == range_end, not in range) 20160ab55879SNikolay Aleksandrov * - last vlan range (range_start != range_end, in range) 20170ab55879SNikolay Aleksandrov */ 2018743a53d9SNikolay Aleksandrov if (!err && range_start) { 2019743a53d9SNikolay Aleksandrov if (dump_global && 2020743a53d9SNikolay Aleksandrov !br_vlan_global_opts_fill(skb, range_start->vid, 2021743a53d9SNikolay Aleksandrov range_end->vid, range_start)) 2022743a53d9SNikolay Aleksandrov err = -EMSGSIZE; 2023743a53d9SNikolay Aleksandrov else if (!dump_global && 2024743a53d9SNikolay Aleksandrov !br_vlan_fill_vids(skb, range_start->vid, 2025743a53d9SNikolay Aleksandrov range_end->vid, range_start, 2026743a53d9SNikolay Aleksandrov br_vlan_flags(range_start, pvid), 202756d09976SNikolay Aleksandrov dump_stats)) 20280ab55879SNikolay Aleksandrov err = -EMSGSIZE; 2029743a53d9SNikolay Aleksandrov } 20300ab55879SNikolay Aleksandrov 20310ab55879SNikolay Aleksandrov cb->args[1] = err ? idx : 0; 20320ab55879SNikolay Aleksandrov 20338dcea187SNikolay Aleksandrov nlmsg_end(skb, nlh); 20348dcea187SNikolay Aleksandrov 20358dcea187SNikolay Aleksandrov return err; 20368dcea187SNikolay Aleksandrov } 20378dcea187SNikolay Aleksandrov 203856d09976SNikolay Aleksandrov static const struct nla_policy br_vlan_db_dump_pol[BRIDGE_VLANDB_DUMP_MAX + 1] = { 203956d09976SNikolay Aleksandrov [BRIDGE_VLANDB_DUMP_FLAGS] = { .type = NLA_U32 }, 204056d09976SNikolay Aleksandrov }; 204156d09976SNikolay Aleksandrov 20428dcea187SNikolay Aleksandrov static int br_vlan_rtm_dump(struct sk_buff *skb, struct netlink_callback *cb) 20438dcea187SNikolay Aleksandrov { 204456d09976SNikolay Aleksandrov struct nlattr *dtb[BRIDGE_VLANDB_DUMP_MAX + 1]; 20458dcea187SNikolay Aleksandrov int idx = 0, err = 0, s_idx = cb->args[0]; 20468dcea187SNikolay Aleksandrov struct net *net = sock_net(skb->sk); 20478dcea187SNikolay Aleksandrov struct br_vlan_msg *bvm; 20488dcea187SNikolay Aleksandrov struct net_device *dev; 204956d09976SNikolay Aleksandrov u32 dump_flags = 0; 20508dcea187SNikolay Aleksandrov 205156d09976SNikolay Aleksandrov err = nlmsg_parse(cb->nlh, sizeof(*bvm), dtb, BRIDGE_VLANDB_DUMP_MAX, 205256d09976SNikolay Aleksandrov br_vlan_db_dump_pol, cb->extack); 20538dcea187SNikolay Aleksandrov if (err < 0) 20548dcea187SNikolay Aleksandrov return err; 20558dcea187SNikolay Aleksandrov 20568dcea187SNikolay Aleksandrov bvm = nlmsg_data(cb->nlh); 205756d09976SNikolay Aleksandrov if (dtb[BRIDGE_VLANDB_DUMP_FLAGS]) 205856d09976SNikolay Aleksandrov dump_flags = nla_get_u32(dtb[BRIDGE_VLANDB_DUMP_FLAGS]); 20598dcea187SNikolay Aleksandrov 20608dcea187SNikolay Aleksandrov rcu_read_lock(); 20618dcea187SNikolay Aleksandrov if (bvm->ifindex) { 20628dcea187SNikolay Aleksandrov dev = dev_get_by_index_rcu(net, bvm->ifindex); 20638dcea187SNikolay Aleksandrov if (!dev) { 20648dcea187SNikolay Aleksandrov err = -ENODEV; 20658dcea187SNikolay Aleksandrov goto out_err; 20668dcea187SNikolay Aleksandrov } 206756d09976SNikolay Aleksandrov err = br_vlan_dump_dev(dev, skb, cb, dump_flags); 2068dcb2c5c6SNikolay Aleksandrov /* if the dump completed without an error we return 0 here */ 2069dcb2c5c6SNikolay Aleksandrov if (err != -EMSGSIZE) 20708dcea187SNikolay Aleksandrov goto out_err; 20718dcea187SNikolay Aleksandrov } else { 20728dcea187SNikolay Aleksandrov for_each_netdev_rcu(net, dev) { 20738dcea187SNikolay Aleksandrov if (idx < s_idx) 20748dcea187SNikolay Aleksandrov goto skip; 20758dcea187SNikolay Aleksandrov 207656d09976SNikolay Aleksandrov err = br_vlan_dump_dev(dev, skb, cb, dump_flags); 20778dcea187SNikolay Aleksandrov if (err == -EMSGSIZE) 20788dcea187SNikolay Aleksandrov break; 20798dcea187SNikolay Aleksandrov skip: 20808dcea187SNikolay Aleksandrov idx++; 20818dcea187SNikolay Aleksandrov } 20828dcea187SNikolay Aleksandrov } 20838dcea187SNikolay Aleksandrov cb->args[0] = idx; 20848dcea187SNikolay Aleksandrov rcu_read_unlock(); 20858dcea187SNikolay Aleksandrov 20868dcea187SNikolay Aleksandrov return skb->len; 20878dcea187SNikolay Aleksandrov 20888dcea187SNikolay Aleksandrov out_err: 20898dcea187SNikolay Aleksandrov rcu_read_unlock(); 20908dcea187SNikolay Aleksandrov 20918dcea187SNikolay Aleksandrov return err; 20928dcea187SNikolay Aleksandrov } 20938dcea187SNikolay Aleksandrov 2094f26b2965SNikolay Aleksandrov static const struct nla_policy br_vlan_db_policy[BRIDGE_VLANDB_ENTRY_MAX + 1] = { 20958140860cSJohannes Berg [BRIDGE_VLANDB_ENTRY_INFO] = 20968140860cSJohannes Berg NLA_POLICY_EXACT_LEN(sizeof(struct bridge_vlan_info)), 20970ab55879SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_RANGE] = { .type = NLA_U16 }, 2098a580c76dSNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_STATE] = { .type = NLA_U8 }, 2099fa388f29SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_TUNNEL_INFO] = { .type = NLA_NESTED }, 21002796d846SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_MCAST_ROUTER] = { .type = NLA_U8 }, 2101f26b2965SNikolay Aleksandrov }; 2102f26b2965SNikolay Aleksandrov 2103f26b2965SNikolay Aleksandrov static int br_vlan_rtm_process_one(struct net_device *dev, 2104f26b2965SNikolay Aleksandrov const struct nlattr *attr, 2105f26b2965SNikolay Aleksandrov int cmd, struct netlink_ext_ack *extack) 2106f26b2965SNikolay Aleksandrov { 21070ab55879SNikolay Aleksandrov struct bridge_vlan_info *vinfo, vrange_end, *vinfo_last = NULL; 2108f26b2965SNikolay Aleksandrov struct nlattr *tb[BRIDGE_VLANDB_ENTRY_MAX + 1]; 2109a5d29ae2SNikolay Aleksandrov bool changed = false, skip_processing = false; 2110f26b2965SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2111f26b2965SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2112f26b2965SNikolay Aleksandrov int err = 0, cmdmap = 0; 2113f26b2965SNikolay Aleksandrov struct net_bridge *br; 2114f26b2965SNikolay Aleksandrov 2115f26b2965SNikolay Aleksandrov if (netif_is_bridge_master(dev)) { 2116f26b2965SNikolay Aleksandrov br = netdev_priv(dev); 2117f26b2965SNikolay Aleksandrov vg = br_vlan_group(br); 2118f26b2965SNikolay Aleksandrov } else { 2119f26b2965SNikolay Aleksandrov p = br_port_get_rtnl(dev); 2120f26b2965SNikolay Aleksandrov if (WARN_ON(!p)) 2121f26b2965SNikolay Aleksandrov return -ENODEV; 2122f26b2965SNikolay Aleksandrov br = p->br; 2123f26b2965SNikolay Aleksandrov vg = nbp_vlan_group(p); 2124f26b2965SNikolay Aleksandrov } 2125f26b2965SNikolay Aleksandrov 2126f26b2965SNikolay Aleksandrov if (WARN_ON(!vg)) 2127f26b2965SNikolay Aleksandrov return -ENODEV; 2128f26b2965SNikolay Aleksandrov 2129f26b2965SNikolay Aleksandrov err = nla_parse_nested(tb, BRIDGE_VLANDB_ENTRY_MAX, attr, 2130f26b2965SNikolay Aleksandrov br_vlan_db_policy, extack); 2131f26b2965SNikolay Aleksandrov if (err) 2132f26b2965SNikolay Aleksandrov return err; 2133f26b2965SNikolay Aleksandrov 2134f26b2965SNikolay Aleksandrov if (!tb[BRIDGE_VLANDB_ENTRY_INFO]) { 2135f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry info"); 2136f26b2965SNikolay Aleksandrov return -EINVAL; 2137f26b2965SNikolay Aleksandrov } 21380ab55879SNikolay Aleksandrov memset(&vrange_end, 0, sizeof(vrange_end)); 2139f26b2965SNikolay Aleksandrov 2140f26b2965SNikolay Aleksandrov vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]); 2141f26b2965SNikolay Aleksandrov if (vinfo->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 2142f26b2965SNikolay Aleksandrov BRIDGE_VLAN_INFO_RANGE_END)) { 2143f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "Old-style vlan ranges are not allowed when using RTM vlan calls"); 2144f26b2965SNikolay Aleksandrov return -EINVAL; 2145f26b2965SNikolay Aleksandrov } 2146f26b2965SNikolay Aleksandrov if (!br_vlan_valid_id(vinfo->vid, extack)) 2147f26b2965SNikolay Aleksandrov return -EINVAL; 2148f26b2965SNikolay Aleksandrov 21490ab55879SNikolay Aleksandrov if (tb[BRIDGE_VLANDB_ENTRY_RANGE]) { 21500ab55879SNikolay Aleksandrov vrange_end.vid = nla_get_u16(tb[BRIDGE_VLANDB_ENTRY_RANGE]); 21510ab55879SNikolay Aleksandrov /* validate user-provided flags without RANGE_BEGIN */ 21520ab55879SNikolay Aleksandrov vrange_end.flags = BRIDGE_VLAN_INFO_RANGE_END | vinfo->flags; 21530ab55879SNikolay Aleksandrov vinfo->flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; 21540ab55879SNikolay Aleksandrov 21550ab55879SNikolay Aleksandrov /* vinfo_last is the range start, vinfo the range end */ 21560ab55879SNikolay Aleksandrov vinfo_last = vinfo; 21570ab55879SNikolay Aleksandrov vinfo = &vrange_end; 21580ab55879SNikolay Aleksandrov 21590ab55879SNikolay Aleksandrov if (!br_vlan_valid_id(vinfo->vid, extack) || 21600ab55879SNikolay Aleksandrov !br_vlan_valid_range(vinfo, vinfo_last, extack)) 21610ab55879SNikolay Aleksandrov return -EINVAL; 21620ab55879SNikolay Aleksandrov } 21630ab55879SNikolay Aleksandrov 2164f26b2965SNikolay Aleksandrov switch (cmd) { 2165f26b2965SNikolay Aleksandrov case RTM_NEWVLAN: 2166f26b2965SNikolay Aleksandrov cmdmap = RTM_SETLINK; 2167a5d29ae2SNikolay Aleksandrov skip_processing = !!(vinfo->flags & BRIDGE_VLAN_INFO_ONLY_OPTS); 2168f26b2965SNikolay Aleksandrov break; 2169adb3ce9bSNikolay Aleksandrov case RTM_DELVLAN: 2170adb3ce9bSNikolay Aleksandrov cmdmap = RTM_DELLINK; 2171adb3ce9bSNikolay Aleksandrov break; 2172f26b2965SNikolay Aleksandrov } 2173f26b2965SNikolay Aleksandrov 2174a5d29ae2SNikolay Aleksandrov if (!skip_processing) { 2175a5d29ae2SNikolay Aleksandrov struct bridge_vlan_info *tmp_last = vinfo_last; 2176a5d29ae2SNikolay Aleksandrov 2177a5d29ae2SNikolay Aleksandrov /* br_process_vlan_info may overwrite vinfo_last */ 2178a5d29ae2SNikolay Aleksandrov err = br_process_vlan_info(br, p, cmdmap, vinfo, &tmp_last, 2179a5d29ae2SNikolay Aleksandrov &changed, extack); 2180a5d29ae2SNikolay Aleksandrov 2181a5d29ae2SNikolay Aleksandrov /* notify first if anything changed */ 2182f26b2965SNikolay Aleksandrov if (changed) 2183f26b2965SNikolay Aleksandrov br_ifinfo_notify(cmdmap, br, p); 2184f26b2965SNikolay Aleksandrov 2185a5d29ae2SNikolay Aleksandrov if (err) 2186a5d29ae2SNikolay Aleksandrov return err; 2187a5d29ae2SNikolay Aleksandrov } 2188a5d29ae2SNikolay Aleksandrov 2189a5d29ae2SNikolay Aleksandrov /* deal with options */ 2190a5d29ae2SNikolay Aleksandrov if (cmd == RTM_NEWVLAN) { 2191a5d29ae2SNikolay Aleksandrov struct net_bridge_vlan *range_start, *range_end; 2192a5d29ae2SNikolay Aleksandrov 2193a5d29ae2SNikolay Aleksandrov if (vinfo_last) { 2194a5d29ae2SNikolay Aleksandrov range_start = br_vlan_find(vg, vinfo_last->vid); 2195a5d29ae2SNikolay Aleksandrov range_end = br_vlan_find(vg, vinfo->vid); 2196a5d29ae2SNikolay Aleksandrov } else { 2197a5d29ae2SNikolay Aleksandrov range_start = br_vlan_find(vg, vinfo->vid); 2198a5d29ae2SNikolay Aleksandrov range_end = range_start; 2199a5d29ae2SNikolay Aleksandrov } 2200a5d29ae2SNikolay Aleksandrov 2201a5d29ae2SNikolay Aleksandrov err = br_vlan_process_options(br, p, range_start, range_end, 2202a5d29ae2SNikolay Aleksandrov tb, extack); 2203a5d29ae2SNikolay Aleksandrov } 2204a5d29ae2SNikolay Aleksandrov 2205f26b2965SNikolay Aleksandrov return err; 2206f26b2965SNikolay Aleksandrov } 2207f26b2965SNikolay Aleksandrov 2208f26b2965SNikolay Aleksandrov static int br_vlan_rtm_process(struct sk_buff *skb, struct nlmsghdr *nlh, 2209f26b2965SNikolay Aleksandrov struct netlink_ext_ack *extack) 2210f26b2965SNikolay Aleksandrov { 2211f26b2965SNikolay Aleksandrov struct net *net = sock_net(skb->sk); 2212f26b2965SNikolay Aleksandrov struct br_vlan_msg *bvm; 2213f26b2965SNikolay Aleksandrov struct net_device *dev; 2214f26b2965SNikolay Aleksandrov struct nlattr *attr; 2215f26b2965SNikolay Aleksandrov int err, vlans = 0; 2216f26b2965SNikolay Aleksandrov int rem; 2217f26b2965SNikolay Aleksandrov 2218f26b2965SNikolay Aleksandrov /* this should validate the header and check for remaining bytes */ 2219f26b2965SNikolay Aleksandrov err = nlmsg_parse(nlh, sizeof(*bvm), NULL, BRIDGE_VLANDB_MAX, NULL, 2220f26b2965SNikolay Aleksandrov extack); 2221f26b2965SNikolay Aleksandrov if (err < 0) 2222f26b2965SNikolay Aleksandrov return err; 2223f26b2965SNikolay Aleksandrov 2224f26b2965SNikolay Aleksandrov bvm = nlmsg_data(nlh); 2225f26b2965SNikolay Aleksandrov dev = __dev_get_by_index(net, bvm->ifindex); 2226f26b2965SNikolay Aleksandrov if (!dev) 2227f26b2965SNikolay Aleksandrov return -ENODEV; 2228f26b2965SNikolay Aleksandrov 2229f26b2965SNikolay Aleksandrov if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) { 2230f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "The device is not a valid bridge or bridge port"); 2231f26b2965SNikolay Aleksandrov return -EINVAL; 2232f26b2965SNikolay Aleksandrov } 2233f26b2965SNikolay Aleksandrov 2234f26b2965SNikolay Aleksandrov nlmsg_for_each_attr(attr, nlh, sizeof(*bvm), rem) { 223547ecd2dbSNikolay Aleksandrov switch (nla_type(attr)) { 223647ecd2dbSNikolay Aleksandrov case BRIDGE_VLANDB_ENTRY: 223747ecd2dbSNikolay Aleksandrov err = br_vlan_rtm_process_one(dev, attr, 223847ecd2dbSNikolay Aleksandrov nlh->nlmsg_type, 223947ecd2dbSNikolay Aleksandrov extack); 224047ecd2dbSNikolay Aleksandrov break; 224147ecd2dbSNikolay Aleksandrov case BRIDGE_VLANDB_GLOBAL_OPTIONS: 224247ecd2dbSNikolay Aleksandrov err = br_vlan_rtm_process_global_options(dev, attr, 224347ecd2dbSNikolay Aleksandrov nlh->nlmsg_type, 224447ecd2dbSNikolay Aleksandrov extack); 224547ecd2dbSNikolay Aleksandrov break; 224647ecd2dbSNikolay Aleksandrov default: 2247f26b2965SNikolay Aleksandrov continue; 224847ecd2dbSNikolay Aleksandrov } 2249f26b2965SNikolay Aleksandrov 2250f26b2965SNikolay Aleksandrov vlans++; 2251f26b2965SNikolay Aleksandrov if (err) 2252f26b2965SNikolay Aleksandrov break; 2253f26b2965SNikolay Aleksandrov } 2254f26b2965SNikolay Aleksandrov if (!vlans) { 2255f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "No vlans found to process"); 2256f26b2965SNikolay Aleksandrov err = -EINVAL; 2257f26b2965SNikolay Aleksandrov } 2258f26b2965SNikolay Aleksandrov 2259f26b2965SNikolay Aleksandrov return err; 2260f26b2965SNikolay Aleksandrov } 2261f26b2965SNikolay Aleksandrov 22628dcea187SNikolay Aleksandrov void br_vlan_rtnl_init(void) 22638dcea187SNikolay Aleksandrov { 22648dcea187SNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_GETVLAN, NULL, 22658dcea187SNikolay Aleksandrov br_vlan_rtm_dump, 0); 2266f26b2965SNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_NEWVLAN, 2267f26b2965SNikolay Aleksandrov br_vlan_rtm_process, NULL, 0); 2268adb3ce9bSNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_DELVLAN, 2269adb3ce9bSNikolay Aleksandrov br_vlan_rtm_process, NULL, 0); 22708dcea187SNikolay Aleksandrov } 22718dcea187SNikolay Aleksandrov 22728dcea187SNikolay Aleksandrov void br_vlan_rtnl_uninit(void) 22738dcea187SNikolay Aleksandrov { 22748dcea187SNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_GETVLAN); 2275f26b2965SNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_NEWVLAN); 2276adb3ce9bSNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_DELVLAN); 22778dcea187SNikolay Aleksandrov } 2278