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 37a580c76dSNikolay Aleksandrov static bool __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) 41f418af63SNikolay Aleksandrov return false; 42552406c4SVlad Yasevich 43552406c4SVlad Yasevich smp_wmb(); 44a580c76dSNikolay Aleksandrov br_vlan_set_pvid_state(vg, v->state); 45a580c76dSNikolay Aleksandrov vg->pvid = v->vid; 46f418af63SNikolay Aleksandrov 47f418af63SNikolay Aleksandrov return true; 48552406c4SVlad Yasevich } 49552406c4SVlad Yasevich 50f418af63SNikolay Aleksandrov static bool __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) 51552406c4SVlad Yasevich { 5277751ee8SNikolay Aleksandrov if (vg->pvid != vid) 53f418af63SNikolay Aleksandrov return false; 54552406c4SVlad Yasevich 55552406c4SVlad Yasevich smp_wmb(); 5677751ee8SNikolay Aleksandrov vg->pvid = 0; 57f418af63SNikolay Aleksandrov 58f418af63SNikolay Aleksandrov return true; 59552406c4SVlad Yasevich } 60552406c4SVlad Yasevich 61f418af63SNikolay Aleksandrov /* return true if anything changed, false otherwise */ 62f418af63SNikolay Aleksandrov static bool __vlan_add_flags(struct net_bridge_vlan *v, u16 flags) 6335e03f3aSVlad Yasevich { 6477751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 65f418af63SNikolay Aleksandrov u16 old_flags = v->flags; 66f418af63SNikolay Aleksandrov bool ret; 6777751ee8SNikolay Aleksandrov 682594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) 69907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 70635126b7SVlad Yasevich else 71907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 7277751ee8SNikolay Aleksandrov 7377751ee8SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_PVID) 74a580c76dSNikolay Aleksandrov ret = __vlan_add_pvid(vg, v); 752594e906SNikolay Aleksandrov else 76f418af63SNikolay Aleksandrov ret = __vlan_delete_pvid(vg, v->vid); 7735e03f3aSVlad Yasevich 7835e03f3aSVlad Yasevich if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 792594e906SNikolay Aleksandrov v->flags |= BRIDGE_VLAN_INFO_UNTAGGED; 80635126b7SVlad Yasevich else 812594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; 82f418af63SNikolay Aleksandrov 83f418af63SNikolay Aleksandrov return ret || !!(old_flags ^ v->flags); 8435e03f3aSVlad Yasevich } 8535e03f3aSVlad Yasevich 867f109539SScott Feldman static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, 8727973793SIdo Schimmel struct net_bridge_vlan *v, u16 flags, 8827973793SIdo Schimmel struct netlink_ext_ack *extack) 897f109539SScott Feldman { 900944d6b5SJiri Pirko int err; 917f109539SScott Feldman 920944d6b5SJiri Pirko /* Try switchdev op first. In case it is not supported, fallback to 930944d6b5SJiri Pirko * 8021q add. 940944d6b5SJiri Pirko */ 9527973793SIdo Schimmel err = br_switchdev_port_vlan_add(dev, v->vid, flags, extack); 967f109539SScott Feldman if (err == -EOPNOTSUPP) 9727973793SIdo Schimmel return vlan_vid_add(dev, br->vlan_proto, v->vid); 9827973793SIdo Schimmel v->priv_flags |= BR_VLFLAG_ADDED_BY_SWITCHDEV; 997f109539SScott Feldman return err; 1007f109539SScott Feldman } 1017f109539SScott Feldman 1022594e906SNikolay Aleksandrov static void __vlan_add_list(struct net_bridge_vlan *v) 103243a2e63SVlad Yasevich { 104907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 1052594e906SNikolay Aleksandrov struct list_head *headp, *hpos; 1062594e906SNikolay Aleksandrov struct net_bridge_vlan *vent; 107243a2e63SVlad Yasevich 108907b1e6eSNikolay Aleksandrov if (br_vlan_is_master(v)) 109907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 110907b1e6eSNikolay Aleksandrov else 111907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 112907b1e6eSNikolay Aleksandrov 113907b1e6eSNikolay Aleksandrov headp = &vg->vlan_list; 1142594e906SNikolay Aleksandrov list_for_each_prev(hpos, headp) { 1152594e906SNikolay Aleksandrov vent = list_entry(hpos, struct net_bridge_vlan, vlist); 116040c1257SColin Ian King if (v->vid >= vent->vid) 1172594e906SNikolay Aleksandrov break; 1182594e906SNikolay Aleksandrov } 119586c2b57SNikolay Aleksandrov list_add_rcu(&v->vlist, hpos); 120552406c4SVlad Yasevich } 121243a2e63SVlad Yasevich 1222594e906SNikolay Aleksandrov static void __vlan_del_list(struct net_bridge_vlan *v) 1232594e906SNikolay Aleksandrov { 124586c2b57SNikolay Aleksandrov list_del_rcu(&v->vlist); 125243a2e63SVlad Yasevich } 126243a2e63SVlad Yasevich 127bf361ad3SVivien Didelot static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, 12827973793SIdo Schimmel const struct net_bridge_vlan *v) 1297f109539SScott Feldman { 1300944d6b5SJiri Pirko int err; 1317f109539SScott Feldman 1320944d6b5SJiri Pirko /* Try switchdev op first. In case it is not supported, fallback to 1330944d6b5SJiri Pirko * 8021q del. 1340944d6b5SJiri Pirko */ 13527973793SIdo Schimmel err = br_switchdev_port_vlan_del(dev, v->vid); 13627973793SIdo Schimmel if (!(v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV)) 13727973793SIdo Schimmel vlan_vid_del(dev, br->vlan_proto, v->vid); 13827973793SIdo Schimmel return err == -EOPNOTSUPP ? 0 : err; 1397f109539SScott Feldman } 1407f109539SScott Feldman 1414bbd026cSRandy Dunlap /* Returns a master vlan, if it didn't exist it gets created. In all cases 142f8ed289fSNikolay Aleksandrov * a reference is taken to the master vlan before returning. 143f8ed289fSNikolay Aleksandrov */ 144169327d5SPetr Machata static struct net_bridge_vlan * 145169327d5SPetr Machata br_vlan_get_master(struct net_bridge *br, u16 vid, 146169327d5SPetr Machata struct netlink_ext_ack *extack) 147f8ed289fSNikolay Aleksandrov { 148907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 149f8ed289fSNikolay Aleksandrov struct net_bridge_vlan *masterv; 150f8ed289fSNikolay Aleksandrov 151907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 152907b1e6eSNikolay Aleksandrov masterv = br_vlan_find(vg, vid); 153f8ed289fSNikolay Aleksandrov if (!masterv) { 154f418af63SNikolay Aleksandrov bool changed; 155f418af63SNikolay Aleksandrov 156f8ed289fSNikolay Aleksandrov /* missing global ctx, create it now */ 157169327d5SPetr Machata if (br_vlan_add(br, vid, 0, &changed, extack)) 158f8ed289fSNikolay Aleksandrov return NULL; 159907b1e6eSNikolay Aleksandrov masterv = br_vlan_find(vg, vid); 160f8ed289fSNikolay Aleksandrov if (WARN_ON(!masterv)) 161f8ed289fSNikolay Aleksandrov return NULL; 1620e5a82efSIdo Schimmel refcount_set(&masterv->refcnt, 1); 1630e5a82efSIdo Schimmel return masterv; 164f8ed289fSNikolay Aleksandrov } 16525127759SReshetova, Elena refcount_inc(&masterv->refcnt); 166f8ed289fSNikolay Aleksandrov 167f8ed289fSNikolay Aleksandrov return masterv; 168f8ed289fSNikolay Aleksandrov } 169f8ed289fSNikolay Aleksandrov 1706dada9b1SNikolay Aleksandrov static void br_master_vlan_rcu_free(struct rcu_head *rcu) 1716dada9b1SNikolay Aleksandrov { 1726dada9b1SNikolay Aleksandrov struct net_bridge_vlan *v; 1736dada9b1SNikolay Aleksandrov 1746dada9b1SNikolay Aleksandrov v = container_of(rcu, struct net_bridge_vlan, rcu); 1756dada9b1SNikolay Aleksandrov WARN_ON(!br_vlan_is_master(v)); 1766dada9b1SNikolay Aleksandrov free_percpu(v->stats); 1776dada9b1SNikolay Aleksandrov v->stats = NULL; 1786dada9b1SNikolay Aleksandrov kfree(v); 1796dada9b1SNikolay Aleksandrov } 1806dada9b1SNikolay Aleksandrov 181f8ed289fSNikolay Aleksandrov static void br_vlan_put_master(struct net_bridge_vlan *masterv) 182f8ed289fSNikolay Aleksandrov { 183907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 184907b1e6eSNikolay Aleksandrov 185f8ed289fSNikolay Aleksandrov if (!br_vlan_is_master(masterv)) 186f8ed289fSNikolay Aleksandrov return; 187f8ed289fSNikolay Aleksandrov 188907b1e6eSNikolay Aleksandrov vg = br_vlan_group(masterv->br); 18925127759SReshetova, Elena if (refcount_dec_and_test(&masterv->refcnt)) { 190907b1e6eSNikolay Aleksandrov rhashtable_remove_fast(&vg->vlan_hash, 191f8ed289fSNikolay Aleksandrov &masterv->vnode, br_vlan_rht_params); 192f8ed289fSNikolay Aleksandrov __vlan_del_list(masterv); 1937b54aaafSNikolay Aleksandrov br_multicast_toggle_one_vlan(masterv, false); 194613d61dbSNikolay Aleksandrov br_multicast_ctx_deinit(&masterv->br_mcast_ctx); 1956dada9b1SNikolay Aleksandrov call_rcu(&masterv->rcu, br_master_vlan_rcu_free); 196f8ed289fSNikolay Aleksandrov } 197f8ed289fSNikolay Aleksandrov } 198f8ed289fSNikolay Aleksandrov 1999163a0fcSNikolay Aleksandrov static void nbp_vlan_rcu_free(struct rcu_head *rcu) 2009163a0fcSNikolay Aleksandrov { 2019163a0fcSNikolay Aleksandrov struct net_bridge_vlan *v; 2029163a0fcSNikolay Aleksandrov 2039163a0fcSNikolay Aleksandrov v = container_of(rcu, struct net_bridge_vlan, rcu); 2049163a0fcSNikolay Aleksandrov WARN_ON(br_vlan_is_master(v)); 2059163a0fcSNikolay Aleksandrov /* if we had per-port stats configured then free them here */ 2069d332e69SNikolay Aleksandrov if (v->priv_flags & BR_VLFLAG_PER_PORT_STATS) 2079163a0fcSNikolay Aleksandrov free_percpu(v->stats); 2089163a0fcSNikolay Aleksandrov v->stats = NULL; 2099163a0fcSNikolay Aleksandrov kfree(v); 2109163a0fcSNikolay Aleksandrov } 2119163a0fcSNikolay Aleksandrov 2122594e906SNikolay Aleksandrov /* This is the shared VLAN add function which works for both ports and bridge 2132594e906SNikolay Aleksandrov * devices. There are four possible calls to this function in terms of the 2142594e906SNikolay Aleksandrov * vlan entry type: 2152594e906SNikolay Aleksandrov * 1. vlan is being added on a port (no master flags, global entry exists) 216ddd611d3SIdo Schimmel * 2. vlan is being added on a bridge (both master and brentry flags) 2172594e906SNikolay Aleksandrov * 3. vlan is being added on a port, but a global entry didn't exist which 218ddd611d3SIdo Schimmel * is being created right now (master flag set, brentry flag unset), the 2192594e906SNikolay Aleksandrov * global entry is used for global per-vlan features, but not for filtering 220ddd611d3SIdo Schimmel * 4. same as 3 but with both master and brentry flags set so the entry 2212594e906SNikolay Aleksandrov * will be used for filtering in both the port and the bridge 2222594e906SNikolay Aleksandrov */ 223169327d5SPetr Machata static int __vlan_add(struct net_bridge_vlan *v, u16 flags, 224169327d5SPetr Machata struct netlink_ext_ack *extack) 225243a2e63SVlad Yasevich { 2262594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = NULL; 2272594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2286be144f6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2292594e906SNikolay Aleksandrov struct net_device *dev; 2302594e906SNikolay Aleksandrov struct net_bridge *br; 231bf361ad3SVivien Didelot int err; 232bf361ad3SVivien Didelot 2332594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 2342594e906SNikolay Aleksandrov br = v->br; 2352594e906SNikolay Aleksandrov dev = br->dev; 236907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 2372594e906SNikolay Aleksandrov } else { 2382594e906SNikolay Aleksandrov p = v->port; 2392594e906SNikolay Aleksandrov br = p->br; 2402594e906SNikolay Aleksandrov dev = p->dev; 241907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 2422594e906SNikolay Aleksandrov } 2432594e906SNikolay Aleksandrov 2442594e906SNikolay Aleksandrov if (p) { 2452594e906SNikolay Aleksandrov /* Add VLAN to the device filter if it is supported. 2462594e906SNikolay Aleksandrov * This ensures tagged traffic enters the bridge when 2472594e906SNikolay Aleksandrov * promiscuous mode is disabled by br_manage_promisc(). 2482594e906SNikolay Aleksandrov */ 24927973793SIdo Schimmel err = __vlan_vid_add(dev, br, v, flags, extack); 250bf361ad3SVivien Didelot if (err) 2512594e906SNikolay Aleksandrov goto out; 2522594e906SNikolay Aleksandrov 2532594e906SNikolay Aleksandrov /* need to work on the master vlan too */ 2542594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_MASTER) { 255f418af63SNikolay Aleksandrov bool changed; 256f418af63SNikolay Aleksandrov 257f418af63SNikolay Aleksandrov err = br_vlan_add(br, v->vid, 258f418af63SNikolay Aleksandrov flags | BRIDGE_VLAN_INFO_BRENTRY, 259169327d5SPetr Machata &changed, extack); 2602594e906SNikolay Aleksandrov if (err) 2612594e906SNikolay Aleksandrov goto out_filt; 262f545923bSNikolay Aleksandrov 263f545923bSNikolay Aleksandrov if (changed) 264f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, v->vid, 0, 265f545923bSNikolay Aleksandrov RTM_NEWVLAN); 2662594e906SNikolay Aleksandrov } 2672594e906SNikolay Aleksandrov 268169327d5SPetr Machata masterv = br_vlan_get_master(br, v->vid, extack); 269ee4f52a8SZhang Changzhong if (!masterv) { 270ee4f52a8SZhang Changzhong err = -ENOMEM; 2712594e906SNikolay Aleksandrov goto out_filt; 272ee4f52a8SZhang Changzhong } 2732594e906SNikolay Aleksandrov v->brvlan = masterv; 2749163a0fcSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)) { 275281cc284SHeiner Kallweit v->stats = 276281cc284SHeiner Kallweit netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 2779163a0fcSNikolay Aleksandrov if (!v->stats) { 2789163a0fcSNikolay Aleksandrov err = -ENOMEM; 2799163a0fcSNikolay Aleksandrov goto out_filt; 2809163a0fcSNikolay Aleksandrov } 2819d332e69SNikolay Aleksandrov v->priv_flags |= BR_VLFLAG_PER_PORT_STATS; 2829163a0fcSNikolay Aleksandrov } else { 2836dada9b1SNikolay Aleksandrov v->stats = masterv->stats; 2849163a0fcSNikolay Aleksandrov } 285613d61dbSNikolay Aleksandrov br_multicast_port_ctx_init(p, v, &v->port_mcast_ctx); 2869c86ce2cSPetr Machata } else { 287169327d5SPetr Machata err = br_switchdev_port_vlan_add(dev, v->vid, flags, extack); 2889c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 2899c86ce2cSPetr Machata goto out; 290613d61dbSNikolay Aleksandrov br_multicast_ctx_init(br, v, &v->br_mcast_ctx); 2917b54aaafSNikolay Aleksandrov v->priv_flags |= BR_VLFLAG_GLOBAL_MCAST_ENABLED; 2922594e906SNikolay Aleksandrov } 2932594e906SNikolay Aleksandrov 2946be144f6SNikolay Aleksandrov /* Add the dev mac and count the vlan only if it's usable */ 2952594e906SNikolay Aleksandrov if (br_vlan_should_use(v)) { 2962594e906SNikolay Aleksandrov err = br_fdb_insert(br, p, dev->dev_addr, v->vid); 2972594e906SNikolay Aleksandrov if (err) { 2982594e906SNikolay Aleksandrov br_err(br, "failed insert local address into bridge forwarding table\n"); 2992594e906SNikolay Aleksandrov goto out_filt; 3002594e906SNikolay Aleksandrov } 3016be144f6SNikolay Aleksandrov vg->num_vlans++; 3022594e906SNikolay Aleksandrov } 3032594e906SNikolay Aleksandrov 304a580c76dSNikolay Aleksandrov /* set the state before publishing */ 305a580c76dSNikolay Aleksandrov v->state = BR_STATE_FORWARDING; 306a580c76dSNikolay Aleksandrov 3076be144f6SNikolay Aleksandrov err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode, 3086be144f6SNikolay Aleksandrov br_vlan_rht_params); 3092594e906SNikolay Aleksandrov if (err) 3102594e906SNikolay Aleksandrov goto out_fdb_insert; 3112594e906SNikolay Aleksandrov 3122594e906SNikolay Aleksandrov __vlan_add_list(v); 3132594e906SNikolay Aleksandrov __vlan_add_flags(v, flags); 3147b54aaafSNikolay Aleksandrov br_multicast_toggle_one_vlan(v, true); 31580900acdSMike Manning 31680900acdSMike Manning if (p) 31780900acdSMike Manning nbp_vlan_set_vlan_dev_state(p, v->vid); 3182594e906SNikolay Aleksandrov out: 3192594e906SNikolay Aleksandrov return err; 3202594e906SNikolay Aleksandrov 3212594e906SNikolay Aleksandrov out_fdb_insert: 3226be144f6SNikolay Aleksandrov if (br_vlan_should_use(v)) { 3236be144f6SNikolay Aleksandrov br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid); 3246be144f6SNikolay Aleksandrov vg->num_vlans--; 3256be144f6SNikolay Aleksandrov } 3262594e906SNikolay Aleksandrov 3272594e906SNikolay Aleksandrov out_filt: 3282594e906SNikolay Aleksandrov if (p) { 32927973793SIdo Schimmel __vlan_vid_del(dev, br, v); 3302594e906SNikolay Aleksandrov if (masterv) { 3311a3aea25SLi RongQing if (v->stats && masterv->stats != v->stats) 3321a3aea25SLi RongQing free_percpu(v->stats); 3331a3aea25SLi RongQing v->stats = NULL; 3341a3aea25SLi RongQing 335f8ed289fSNikolay Aleksandrov br_vlan_put_master(masterv); 3362594e906SNikolay Aleksandrov v->brvlan = NULL; 3372594e906SNikolay Aleksandrov } 3389c86ce2cSPetr Machata } else { 3399c86ce2cSPetr Machata br_switchdev_port_vlan_del(dev, v->vid); 3402594e906SNikolay Aleksandrov } 3412594e906SNikolay Aleksandrov 3422594e906SNikolay Aleksandrov goto out; 3432594e906SNikolay Aleksandrov } 3442594e906SNikolay Aleksandrov 3452594e906SNikolay Aleksandrov static int __vlan_del(struct net_bridge_vlan *v) 3462594e906SNikolay Aleksandrov { 3472594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = v; 34877751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 3492594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 3502594e906SNikolay Aleksandrov int err = 0; 3512594e906SNikolay Aleksandrov 3522594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 353907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 3542594e906SNikolay Aleksandrov } else { 3552594e906SNikolay Aleksandrov p = v->port; 356907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 3572594e906SNikolay Aleksandrov masterv = v->brvlan; 3582594e906SNikolay Aleksandrov } 3592594e906SNikolay Aleksandrov 36077751ee8SNikolay Aleksandrov __vlan_delete_pvid(vg, v->vid); 3612594e906SNikolay Aleksandrov if (p) { 36227973793SIdo Schimmel err = __vlan_vid_del(p->dev, p->br, v); 3632594e906SNikolay Aleksandrov if (err) 3642594e906SNikolay Aleksandrov goto out; 3659c86ce2cSPetr Machata } else { 3669c86ce2cSPetr Machata err = br_switchdev_port_vlan_del(v->br->dev, v->vid); 3679c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 3689c86ce2cSPetr Machata goto out; 3699c86ce2cSPetr Machata err = 0; 3702594e906SNikolay Aleksandrov } 3712594e906SNikolay Aleksandrov 3726be144f6SNikolay Aleksandrov if (br_vlan_should_use(v)) { 3732594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; 3746be144f6SNikolay Aleksandrov vg->num_vlans--; 3752594e906SNikolay Aleksandrov } 3762594e906SNikolay Aleksandrov 3772594e906SNikolay Aleksandrov if (masterv != v) { 378efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 37977751ee8SNikolay Aleksandrov rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, 38077751ee8SNikolay Aleksandrov br_vlan_rht_params); 3812594e906SNikolay Aleksandrov __vlan_del_list(v); 38280900acdSMike Manning nbp_vlan_set_vlan_dev_state(p, v->vid); 3837b54aaafSNikolay Aleksandrov br_multicast_toggle_one_vlan(v, false); 384613d61dbSNikolay Aleksandrov br_multicast_port_ctx_deinit(&v->port_mcast_ctx); 3859163a0fcSNikolay Aleksandrov call_rcu(&v->rcu, nbp_vlan_rcu_free); 3862594e906SNikolay Aleksandrov } 3872594e906SNikolay Aleksandrov 388f8ed289fSNikolay Aleksandrov br_vlan_put_master(masterv); 3892594e906SNikolay Aleksandrov out: 390bf361ad3SVivien Didelot return err; 3918580e211SToshiaki Makita } 392243a2e63SVlad Yasevich 393f409d0edSNikolay Aleksandrov static void __vlan_group_free(struct net_bridge_vlan_group *vg) 394f409d0edSNikolay Aleksandrov { 395f409d0edSNikolay Aleksandrov WARN_ON(!list_empty(&vg->vlan_list)); 396f409d0edSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 397efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 398f409d0edSNikolay Aleksandrov kfree(vg); 399f409d0edSNikolay Aleksandrov } 400f409d0edSNikolay Aleksandrov 401f545923bSNikolay Aleksandrov static void __vlan_flush(const struct net_bridge *br, 402f545923bSNikolay Aleksandrov const struct net_bridge_port *p, 403f545923bSNikolay Aleksandrov struct net_bridge_vlan_group *vg) 404243a2e63SVlad Yasevich { 4052594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan, *tmp; 406f545923bSNikolay Aleksandrov u16 v_start = 0, v_end = 0; 4072594e906SNikolay Aleksandrov 408f409d0edSNikolay Aleksandrov __vlan_delete_pvid(vg, vg->pvid); 409f545923bSNikolay Aleksandrov list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) { 410f545923bSNikolay Aleksandrov /* take care of disjoint ranges */ 411f545923bSNikolay Aleksandrov if (!v_start) { 412f545923bSNikolay Aleksandrov v_start = vlan->vid; 413f545923bSNikolay Aleksandrov } else if (vlan->vid - v_end != 1) { 414f545923bSNikolay Aleksandrov /* found range end, notify and start next one */ 415f545923bSNikolay Aleksandrov br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN); 416f545923bSNikolay Aleksandrov v_start = vlan->vid; 417f545923bSNikolay Aleksandrov } 418f545923bSNikolay Aleksandrov v_end = vlan->vid; 419f545923bSNikolay Aleksandrov 4202594e906SNikolay Aleksandrov __vlan_del(vlan); 421243a2e63SVlad Yasevich } 422243a2e63SVlad Yasevich 423f545923bSNikolay Aleksandrov /* notify about the last/whole vlan range */ 424f545923bSNikolay Aleksandrov if (v_start) 425f545923bSNikolay Aleksandrov br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN); 426f545923bSNikolay Aleksandrov } 427f545923bSNikolay Aleksandrov 42878851988SVlad Yasevich struct sk_buff *br_handle_vlan(struct net_bridge *br, 42911538d03SRoopa Prabhu const struct net_bridge_port *p, 4302594e906SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 431a37b85c9SVlad Yasevich struct sk_buff *skb) 432a37b85c9SVlad Yasevich { 433281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats; 4342594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 435a37b85c9SVlad Yasevich u16 vid; 436a37b85c9SVlad Yasevich 43720adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 43820adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 43978851988SVlad Yasevich goto out; 44078851988SVlad Yasevich 4412594e906SNikolay Aleksandrov /* At this point, we know that the frame was filtered and contains 4422594e906SNikolay Aleksandrov * a valid vlan id. If the vlan id has untagged flag set, 4432594e906SNikolay Aleksandrov * send untagged; otherwise, send tagged. 4442594e906SNikolay Aleksandrov */ 4452594e906SNikolay Aleksandrov br_vlan_get_tag(skb, &vid); 4462594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 4472594e906SNikolay Aleksandrov /* Vlan entry must be configured at this point. The 448fc92f745SVlad Yasevich * only exception is the bridge is set in promisc mode and the 449fc92f745SVlad Yasevich * packet is destined for the bridge device. In this case 450fc92f745SVlad Yasevich * pass the packet as is. 451fc92f745SVlad Yasevich */ 4522594e906SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) { 453fc92f745SVlad Yasevich if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { 454fc92f745SVlad Yasevich goto out; 455fc92f745SVlad Yasevich } else { 456fc92f745SVlad Yasevich kfree_skb(skb); 457fc92f745SVlad Yasevich return NULL; 458fc92f745SVlad Yasevich } 459fc92f745SVlad Yasevich } 460ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 4616dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 4626dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 4636dada9b1SNikolay Aleksandrov stats->tx_bytes += skb->len; 4646dada9b1SNikolay Aleksandrov stats->tx_packets++; 4656dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 4666dada9b1SNikolay Aleksandrov } 4676dada9b1SNikolay Aleksandrov 4682594e906SNikolay Aleksandrov if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 4695978f8a9SMichał Mirosław __vlan_hwaccel_clear_tag(skb); 47011538d03SRoopa Prabhu 47111538d03SRoopa Prabhu if (p && (p->flags & BR_VLAN_TUNNEL) && 47211538d03SRoopa Prabhu br_handle_egress_vlan_tunnel(skb, v)) { 47311538d03SRoopa Prabhu kfree_skb(skb); 47411538d03SRoopa Prabhu return NULL; 47511538d03SRoopa Prabhu } 47678851988SVlad Yasevich out: 47778851988SVlad Yasevich return skb; 47878851988SVlad Yasevich } 47978851988SVlad Yasevich 48078851988SVlad Yasevich /* Called under RCU */ 4816dada9b1SNikolay Aleksandrov static bool __allowed_ingress(const struct net_bridge *br, 4826dada9b1SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 483a580c76dSNikolay Aleksandrov struct sk_buff *skb, u16 *vid, 484f4b7002aSNikolay Aleksandrov u8 *state, 485f4b7002aSNikolay Aleksandrov struct net_bridge_vlan **vlan) 48678851988SVlad Yasevich { 487281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats; 4886dada9b1SNikolay Aleksandrov struct net_bridge_vlan *v; 4898580e211SToshiaki Makita bool tagged; 490a37b85c9SVlad Yasevich 49120adfa1aSVlad Yasevich BR_INPUT_SKB_CB(skb)->vlan_filtered = true; 49212464bb8SToshiaki Makita /* If vlan tx offload is disabled on bridge device and frame was 49312464bb8SToshiaki Makita * sent from vlan device on the bridge device, it does not have 49412464bb8SToshiaki Makita * HW accelerated vlan tag. 49512464bb8SToshiaki Makita */ 496df8a39deSJiri Pirko if (unlikely(!skb_vlan_tag_present(skb) && 4976dada9b1SNikolay Aleksandrov skb->protocol == br->vlan_proto)) { 4980d5501c1SVlad Yasevich skb = skb_vlan_untag(skb); 49912464bb8SToshiaki Makita if (unlikely(!skb)) 50012464bb8SToshiaki Makita return false; 50112464bb8SToshiaki Makita } 50212464bb8SToshiaki Makita 5038580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid)) { 5048580e211SToshiaki Makita /* Tagged frame */ 5056dada9b1SNikolay Aleksandrov if (skb->vlan_proto != br->vlan_proto) { 5068580e211SToshiaki Makita /* Protocol-mismatch, empty out vlan_tci for new tag */ 5078580e211SToshiaki Makita skb_push(skb, ETH_HLEN); 50862749e2cSJiri Pirko skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, 509df8a39deSJiri Pirko skb_vlan_tag_get(skb)); 5108580e211SToshiaki Makita if (unlikely(!skb)) 5118580e211SToshiaki Makita return false; 5128580e211SToshiaki Makita 5138580e211SToshiaki Makita skb_pull(skb, ETH_HLEN); 5148580e211SToshiaki Makita skb_reset_mac_len(skb); 5158580e211SToshiaki Makita *vid = 0; 5168580e211SToshiaki Makita tagged = false; 5178580e211SToshiaki Makita } else { 5188580e211SToshiaki Makita tagged = true; 5198580e211SToshiaki Makita } 5208580e211SToshiaki Makita } else { 5218580e211SToshiaki Makita /* Untagged frame */ 5228580e211SToshiaki Makita tagged = false; 5238580e211SToshiaki Makita } 5248580e211SToshiaki Makita 525b90356ceSToshiaki Makita if (!*vid) { 52677751ee8SNikolay Aleksandrov u16 pvid = br_get_pvid(vg); 52777751ee8SNikolay Aleksandrov 528b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 529b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 530b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 53178851988SVlad Yasevich */ 5323df6bf45SVlad Yasevich if (!pvid) 533eb707618SToshiaki Makita goto drop; 53478851988SVlad Yasevich 535b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 536b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 53778851988SVlad Yasevich */ 538dfb5fa32SToshiaki Makita *vid = pvid; 5398580e211SToshiaki Makita if (likely(!tagged)) 540b90356ceSToshiaki Makita /* Untagged Frame. */ 5416dada9b1SNikolay Aleksandrov __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); 542b90356ceSToshiaki Makita else 543b90356ceSToshiaki Makita /* Priority-tagged Frame. 5445978f8a9SMichał Mirosław * At this point, we know that skb->vlan_tci VID 5455978f8a9SMichał Mirosław * field was 0. 546b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 547b90356ceSToshiaki Makita */ 548b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 549b90356ceSToshiaki Makita 550f4b7002aSNikolay Aleksandrov /* if snooping and stats are disabled we can avoid the lookup */ 551f4b7002aSNikolay Aleksandrov if (!br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) && 552f4b7002aSNikolay Aleksandrov !br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 553a580c76dSNikolay Aleksandrov if (*state == BR_STATE_FORWARDING) { 554a580c76dSNikolay Aleksandrov *state = br_vlan_get_pvid_state(vg); 555a580c76dSNikolay Aleksandrov return br_vlan_state_allowed(*state, true); 556a580c76dSNikolay Aleksandrov } else { 55778851988SVlad Yasevich return true; 55878851988SVlad Yasevich } 559a580c76dSNikolay Aleksandrov } 560a580c76dSNikolay Aleksandrov } 56177751ee8SNikolay Aleksandrov v = br_vlan_find(vg, *vid); 5626dada9b1SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 5636dada9b1SNikolay Aleksandrov goto drop; 5646dada9b1SNikolay Aleksandrov 565a580c76dSNikolay Aleksandrov if (*state == BR_STATE_FORWARDING) { 566a580c76dSNikolay Aleksandrov *state = br_vlan_get_state(v); 567a580c76dSNikolay Aleksandrov if (!br_vlan_state_allowed(*state, true)) 568a580c76dSNikolay Aleksandrov goto drop; 569a580c76dSNikolay Aleksandrov } 570a580c76dSNikolay Aleksandrov 571ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 5726dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 5736dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 5746dada9b1SNikolay Aleksandrov stats->rx_bytes += skb->len; 5756dada9b1SNikolay Aleksandrov stats->rx_packets++; 5766dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 5776dada9b1SNikolay Aleksandrov } 5786dada9b1SNikolay Aleksandrov 579f4b7002aSNikolay Aleksandrov *vlan = v; 580f4b7002aSNikolay Aleksandrov 581a37b85c9SVlad Yasevich return true; 5826dada9b1SNikolay Aleksandrov 583eb707618SToshiaki Makita drop: 584eb707618SToshiaki Makita kfree_skb(skb); 585a37b85c9SVlad Yasevich return false; 586a37b85c9SVlad Yasevich } 587a37b85c9SVlad Yasevich 58877751ee8SNikolay Aleksandrov bool br_allowed_ingress(const struct net_bridge *br, 58977751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg, struct sk_buff *skb, 590f4b7002aSNikolay Aleksandrov u16 *vid, u8 *state, 591f4b7002aSNikolay Aleksandrov struct net_bridge_vlan **vlan) 5922594e906SNikolay Aleksandrov { 5932594e906SNikolay Aleksandrov /* If VLAN filtering is disabled on the bridge, all packets are 5942594e906SNikolay Aleksandrov * permitted. 5952594e906SNikolay Aleksandrov */ 596f4b7002aSNikolay Aleksandrov *vlan = NULL; 597ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) { 5982594e906SNikolay Aleksandrov BR_INPUT_SKB_CB(skb)->vlan_filtered = false; 5992594e906SNikolay Aleksandrov return true; 6002594e906SNikolay Aleksandrov } 6012594e906SNikolay Aleksandrov 602f4b7002aSNikolay Aleksandrov return __allowed_ingress(br, vg, skb, vid, state, vlan); 6032594e906SNikolay Aleksandrov } 6042594e906SNikolay Aleksandrov 60585f46c6bSVlad Yasevich /* Called under RCU. */ 6062594e906SNikolay Aleksandrov bool br_allowed_egress(struct net_bridge_vlan_group *vg, 60785f46c6bSVlad Yasevich const struct sk_buff *skb) 60885f46c6bSVlad Yasevich { 6092594e906SNikolay Aleksandrov const struct net_bridge_vlan *v; 61085f46c6bSVlad Yasevich u16 vid; 61185f46c6bSVlad Yasevich 61220adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 61320adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 61485f46c6bSVlad Yasevich return true; 61585f46c6bSVlad Yasevich 61685f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 6172594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 618a580c76dSNikolay Aleksandrov if (v && br_vlan_should_use(v) && 619a580c76dSNikolay Aleksandrov br_vlan_state_allowed(br_vlan_get_state(v), false)) 62085f46c6bSVlad Yasevich return true; 62185f46c6bSVlad Yasevich 62285f46c6bSVlad Yasevich return false; 62385f46c6bSVlad Yasevich } 62485f46c6bSVlad Yasevich 625e0d7968aSToshiaki Makita /* Called under RCU */ 626e0d7968aSToshiaki Makita bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) 627e0d7968aSToshiaki Makita { 628468e7944SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 629e0d7968aSToshiaki Makita struct net_bridge *br = p->br; 630a580c76dSNikolay Aleksandrov struct net_bridge_vlan *v; 631e0d7968aSToshiaki Makita 63220adfa1aSVlad Yasevich /* If filtering was disabled at input, let it pass. */ 633ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 634e0d7968aSToshiaki Makita return true; 635e0d7968aSToshiaki Makita 636eca1e006SIdo Schimmel vg = nbp_vlan_group_rcu(p); 637468e7944SNikolay Aleksandrov if (!vg || !vg->num_vlans) 638e0d7968aSToshiaki Makita return false; 639e0d7968aSToshiaki Makita 6408580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) 6418580e211SToshiaki Makita *vid = 0; 6428580e211SToshiaki Makita 643e0d7968aSToshiaki Makita if (!*vid) { 64477751ee8SNikolay Aleksandrov *vid = br_get_pvid(vg); 645a580c76dSNikolay Aleksandrov if (!*vid || 646a580c76dSNikolay Aleksandrov !br_vlan_state_allowed(br_vlan_get_pvid_state(vg), true)) 647e0d7968aSToshiaki Makita return false; 648e0d7968aSToshiaki Makita 649e0d7968aSToshiaki Makita return true; 650e0d7968aSToshiaki Makita } 651e0d7968aSToshiaki Makita 652a580c76dSNikolay Aleksandrov v = br_vlan_find(vg, *vid); 653a580c76dSNikolay Aleksandrov if (v && br_vlan_state_allowed(br_vlan_get_state(v), true)) 654e0d7968aSToshiaki Makita return true; 655e0d7968aSToshiaki Makita 656e0d7968aSToshiaki Makita return false; 657e0d7968aSToshiaki Makita } 658e0d7968aSToshiaki Makita 659dbd6dc75SPetr Machata static int br_vlan_add_existing(struct net_bridge *br, 660dbd6dc75SPetr Machata struct net_bridge_vlan_group *vg, 661dbd6dc75SPetr Machata struct net_bridge_vlan *vlan, 662169327d5SPetr Machata u16 flags, bool *changed, 663169327d5SPetr Machata struct netlink_ext_ack *extack) 664dbd6dc75SPetr Machata { 665dbd6dc75SPetr Machata int err; 666dbd6dc75SPetr Machata 667169327d5SPetr Machata err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags, extack); 6689c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 6699c86ce2cSPetr Machata return err; 6709c86ce2cSPetr Machata 671dbd6dc75SPetr Machata if (!br_vlan_is_brentry(vlan)) { 672dbd6dc75SPetr Machata /* Trying to change flags of non-existent bridge vlan */ 6739c86ce2cSPetr Machata if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) { 6749c86ce2cSPetr Machata err = -EINVAL; 6759c86ce2cSPetr Machata goto err_flags; 6769c86ce2cSPetr Machata } 677dbd6dc75SPetr Machata /* It was only kept for port vlans, now make it real */ 678dbd6dc75SPetr Machata err = br_fdb_insert(br, NULL, br->dev->dev_addr, 679dbd6dc75SPetr Machata vlan->vid); 680dbd6dc75SPetr Machata if (err) { 681dbd6dc75SPetr Machata br_err(br, "failed to insert local address into bridge forwarding table\n"); 6829c86ce2cSPetr Machata goto err_fdb_insert; 683dbd6dc75SPetr Machata } 684dbd6dc75SPetr Machata 685dbd6dc75SPetr Machata refcount_inc(&vlan->refcnt); 686dbd6dc75SPetr Machata vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; 687dbd6dc75SPetr Machata vg->num_vlans++; 688dbd6dc75SPetr Machata *changed = true; 689dbd6dc75SPetr Machata } 690dbd6dc75SPetr Machata 691dbd6dc75SPetr Machata if (__vlan_add_flags(vlan, flags)) 692dbd6dc75SPetr Machata *changed = true; 693dbd6dc75SPetr Machata 694dbd6dc75SPetr Machata return 0; 6959c86ce2cSPetr Machata 6969c86ce2cSPetr Machata err_fdb_insert: 6979c86ce2cSPetr Machata err_flags: 6989c86ce2cSPetr Machata br_switchdev_port_vlan_del(br->dev, vlan->vid); 6999c86ce2cSPetr Machata return err; 700dbd6dc75SPetr Machata } 701dbd6dc75SPetr Machata 7028adff41cSToshiaki Makita /* Must be protected by RTNL. 7038adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 704f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 7058adff41cSToshiaki Makita */ 706169327d5SPetr Machata int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed, 707169327d5SPetr Machata struct netlink_ext_ack *extack) 708243a2e63SVlad Yasevich { 709907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 7102594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 7112594e906SNikolay Aleksandrov int ret; 712243a2e63SVlad Yasevich 713243a2e63SVlad Yasevich ASSERT_RTNL(); 714243a2e63SVlad Yasevich 715f418af63SNikolay Aleksandrov *changed = false; 716907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 717907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(vg, vid); 718dbd6dc75SPetr Machata if (vlan) 719169327d5SPetr Machata return br_vlan_add_existing(br, vg, vlan, flags, changed, 720169327d5SPetr Machata extack); 721243a2e63SVlad Yasevich 7222594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 7232594e906SNikolay Aleksandrov if (!vlan) 724243a2e63SVlad Yasevich return -ENOMEM; 725243a2e63SVlad Yasevich 726281cc284SHeiner Kallweit vlan->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 7276dada9b1SNikolay Aleksandrov if (!vlan->stats) { 7286dada9b1SNikolay Aleksandrov kfree(vlan); 7296dada9b1SNikolay Aleksandrov return -ENOMEM; 7306dada9b1SNikolay Aleksandrov } 7312594e906SNikolay Aleksandrov vlan->vid = vid; 7322594e906SNikolay Aleksandrov vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; 7332594e906SNikolay Aleksandrov vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; 7342594e906SNikolay Aleksandrov vlan->br = br; 7352594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_BRENTRY) 73625127759SReshetova, Elena refcount_set(&vlan->refcnt, 1); 737169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 7386dada9b1SNikolay Aleksandrov if (ret) { 7396dada9b1SNikolay Aleksandrov free_percpu(vlan->stats); 7402594e906SNikolay Aleksandrov kfree(vlan); 741f418af63SNikolay Aleksandrov } else { 742f418af63SNikolay Aleksandrov *changed = true; 7436dada9b1SNikolay Aleksandrov } 744243a2e63SVlad Yasevich 7452594e906SNikolay Aleksandrov return ret; 746243a2e63SVlad Yasevich } 747243a2e63SVlad Yasevich 7488adff41cSToshiaki Makita /* Must be protected by RTNL. 7498adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 7508adff41cSToshiaki Makita */ 751243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 752243a2e63SVlad Yasevich { 753907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 7542594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 755243a2e63SVlad Yasevich 756243a2e63SVlad Yasevich ASSERT_RTNL(); 757243a2e63SVlad Yasevich 758907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 759907b1e6eSNikolay Aleksandrov v = br_vlan_find(vg, vid); 7602594e906SNikolay Aleksandrov if (!v || !br_vlan_is_brentry(v)) 7612594e906SNikolay Aleksandrov return -ENOENT; 762243a2e63SVlad Yasevich 763424bb9c9SToshiaki Makita br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); 7643741873bSRoopa Prabhu br_fdb_delete_by_port(br, NULL, vid, 0); 765bc9a25d2SVlad Yasevich 766efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 767efa5356bSRoopa Prabhu 7682594e906SNikolay Aleksandrov return __vlan_del(v); 769243a2e63SVlad Yasevich } 770243a2e63SVlad Yasevich 771243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 772243a2e63SVlad Yasevich { 773f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 774f409d0edSNikolay Aleksandrov 775243a2e63SVlad Yasevich ASSERT_RTNL(); 776243a2e63SVlad Yasevich 777f409d0edSNikolay Aleksandrov vg = br_vlan_group(br); 778f545923bSNikolay Aleksandrov __vlan_flush(br, NULL, vg); 779f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(br->vlgrp, NULL); 780f409d0edSNikolay Aleksandrov synchronize_rcu(); 781f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 782243a2e63SVlad Yasevich } 783243a2e63SVlad Yasevich 7842594e906SNikolay Aleksandrov struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) 7852b292fb4SToshiaki Makita { 7862594e906SNikolay Aleksandrov if (!vg) 7872594e906SNikolay Aleksandrov return NULL; 7882b292fb4SToshiaki Makita 7892594e906SNikolay Aleksandrov return br_vlan_lookup(&vg->vlan_hash, vid); 7902b292fb4SToshiaki Makita } 7912b292fb4SToshiaki Makita 792204177f3SToshiaki Makita /* Must be protected by RTNL. */ 793204177f3SToshiaki Makita static void recalculate_group_addr(struct net_bridge *br) 794204177f3SToshiaki Makita { 795be3664a0SNikolay Aleksandrov if (br_opt_get(br, BROPT_GROUP_ADDR_SET)) 796204177f3SToshiaki Makita return; 797204177f3SToshiaki Makita 798204177f3SToshiaki Makita spin_lock_bh(&br->lock); 799ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 800ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) { 801204177f3SToshiaki Makita /* Bridge Group Address */ 802204177f3SToshiaki Makita br->group_addr[5] = 0x00; 803204177f3SToshiaki Makita } else { /* vlan_enabled && ETH_P_8021AD */ 804204177f3SToshiaki Makita /* Provider Bridge Group Address */ 805204177f3SToshiaki Makita br->group_addr[5] = 0x08; 806204177f3SToshiaki Makita } 807204177f3SToshiaki Makita spin_unlock_bh(&br->lock); 808204177f3SToshiaki Makita } 809204177f3SToshiaki Makita 810204177f3SToshiaki Makita /* Must be protected by RTNL. */ 811204177f3SToshiaki Makita void br_recalculate_fwd_mask(struct net_bridge *br) 812204177f3SToshiaki Makita { 813ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 814ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) 815204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; 816204177f3SToshiaki Makita else /* vlan_enabled && ETH_P_8021AD */ 817204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_8021AD & 818204177f3SToshiaki Makita ~(1u << br->group_addr[5]); 819204177f3SToshiaki Makita } 820204177f3SToshiaki Makita 8219e781401SVladimir Oltean int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, 8229e781401SVladimir Oltean struct netlink_ext_ack *extack) 823243a2e63SVlad Yasevich { 8246b72a770SElad Raz struct switchdev_attr attr = { 8256b72a770SElad Raz .orig_dev = br->dev, 8266b72a770SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 8276b72a770SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 8286b72a770SElad Raz .u.vlan_filtering = val, 8296b72a770SElad Raz }; 8306b72a770SElad Raz int err; 8316b72a770SElad Raz 832ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED) == !!val) 833a7854037SNikolay Aleksandrov return 0; 834243a2e63SVlad Yasevich 835dcbdf135SVladimir Oltean err = switchdev_port_attr_set(br->dev, &attr, extack); 8366b72a770SElad Raz if (err && err != -EOPNOTSUPP) 8376b72a770SElad Raz return err; 8386b72a770SElad Raz 839ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_ENABLED, !!val); 8402796d0c6SVlad Yasevich br_manage_promisc(br); 841204177f3SToshiaki Makita recalculate_group_addr(br); 842204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 843f4b7002aSNikolay Aleksandrov if (!val && br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED)) { 844f4b7002aSNikolay Aleksandrov br_info(br, "vlan filtering disabled, automatically disabling multicast vlan snooping\n"); 845f4b7002aSNikolay Aleksandrov br_multicast_toggle_vlan_snooping(br, false, NULL); 846f4b7002aSNikolay Aleksandrov } 847243a2e63SVlad Yasevich 848a7854037SNikolay Aleksandrov return 0; 849a7854037SNikolay Aleksandrov } 850a7854037SNikolay Aleksandrov 8511f51445aSIdo Schimmel bool br_vlan_enabled(const struct net_device *dev) 8521f51445aSIdo Schimmel { 8531f51445aSIdo Schimmel struct net_bridge *br = netdev_priv(dev); 8541f51445aSIdo Schimmel 855ae75767eSNikolay Aleksandrov return br_opt_get(br, BROPT_VLAN_ENABLED); 8561f51445aSIdo Schimmel } 8571f51445aSIdo Schimmel EXPORT_SYMBOL_GPL(br_vlan_enabled); 8581f51445aSIdo Schimmel 85931aed46fSwenxu int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 86031aed46fSwenxu { 86131aed46fSwenxu struct net_bridge *br = netdev_priv(dev); 86231aed46fSwenxu 86331aed46fSwenxu *p_proto = ntohs(br->vlan_proto); 86431aed46fSwenxu 86531aed46fSwenxu return 0; 86631aed46fSwenxu } 86731aed46fSwenxu EXPORT_SYMBOL_GPL(br_vlan_get_proto); 86831aed46fSwenxu 869dcbdf135SVladimir Oltean int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, 870dcbdf135SVladimir Oltean struct netlink_ext_ack *extack) 871204177f3SToshiaki Makita { 87222ec19f3SDanielle Ratson struct switchdev_attr attr = { 87322ec19f3SDanielle Ratson .orig_dev = br->dev, 87422ec19f3SDanielle Ratson .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, 87522ec19f3SDanielle Ratson .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 87622ec19f3SDanielle Ratson .u.vlan_protocol = ntohs(proto), 87722ec19f3SDanielle Ratson }; 878204177f3SToshiaki Makita int err = 0; 879204177f3SToshiaki Makita struct net_bridge_port *p; 8802594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 881907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 88222ec19f3SDanielle Ratson __be16 oldproto = br->vlan_proto; 883204177f3SToshiaki Makita 884204177f3SToshiaki Makita if (br->vlan_proto == proto) 885d2d427b3SToshiaki Makita return 0; 886204177f3SToshiaki Makita 887dcbdf135SVladimir Oltean err = switchdev_port_attr_set(br->dev, &attr, extack); 88822ec19f3SDanielle Ratson if (err && err != -EOPNOTSUPP) 88922ec19f3SDanielle Ratson return err; 89022ec19f3SDanielle Ratson 891204177f3SToshiaki Makita /* Add VLANs for the new proto to the device filter. */ 892204177f3SToshiaki Makita list_for_each_entry(p, &br->port_list, list) { 893907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 894907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) { 8952594e906SNikolay Aleksandrov err = vlan_vid_add(p->dev, proto, vlan->vid); 896204177f3SToshiaki Makita if (err) 897204177f3SToshiaki Makita goto err_filt; 898204177f3SToshiaki Makita } 899204177f3SToshiaki Makita } 900204177f3SToshiaki Makita 901204177f3SToshiaki Makita br->vlan_proto = proto; 902204177f3SToshiaki Makita 903204177f3SToshiaki Makita recalculate_group_addr(br); 904204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 905204177f3SToshiaki Makita 906204177f3SToshiaki Makita /* Delete VLANs for the old proto from the device filter. */ 907907b1e6eSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 908907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 909907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 9102594e906SNikolay Aleksandrov vlan_vid_del(p->dev, oldproto, vlan->vid); 911907b1e6eSNikolay Aleksandrov } 912204177f3SToshiaki Makita 913d2d427b3SToshiaki Makita return 0; 914204177f3SToshiaki Makita 915204177f3SToshiaki Makita err_filt: 91622ec19f3SDanielle Ratson attr.u.vlan_protocol = ntohs(oldproto); 917dcbdf135SVladimir Oltean switchdev_port_attr_set(br->dev, &attr, NULL); 91822ec19f3SDanielle Ratson 919907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) 9202594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 921204177f3SToshiaki Makita 922907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(p, &br->port_list, list) { 923907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 924907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 9252594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 926907b1e6eSNikolay Aleksandrov } 927204177f3SToshiaki Makita 928d2d427b3SToshiaki Makita return err; 929d2d427b3SToshiaki Makita } 930d2d427b3SToshiaki Makita 9319e781401SVladimir Oltean int br_vlan_set_proto(struct net_bridge *br, unsigned long val, 9329e781401SVladimir Oltean struct netlink_ext_ack *extack) 933d2d427b3SToshiaki Makita { 934a98c0c47SMenglong Dong if (!eth_type_vlan(htons(val))) 935d2d427b3SToshiaki Makita return -EPROTONOSUPPORT; 936d2d427b3SToshiaki Makita 937dcbdf135SVladimir Oltean return __br_vlan_set_proto(br, htons(val), extack); 938204177f3SToshiaki Makita } 939204177f3SToshiaki Makita 9406dada9b1SNikolay Aleksandrov int br_vlan_set_stats(struct net_bridge *br, unsigned long val) 9416dada9b1SNikolay Aleksandrov { 9426dada9b1SNikolay Aleksandrov switch (val) { 9436dada9b1SNikolay Aleksandrov case 0: 9446dada9b1SNikolay Aleksandrov case 1: 945ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_ENABLED, !!val); 9466dada9b1SNikolay Aleksandrov break; 9476dada9b1SNikolay Aleksandrov default: 9486dada9b1SNikolay Aleksandrov return -EINVAL; 9496dada9b1SNikolay Aleksandrov } 9506dada9b1SNikolay Aleksandrov 9516dada9b1SNikolay Aleksandrov return 0; 9526dada9b1SNikolay Aleksandrov } 9536dada9b1SNikolay Aleksandrov 9549163a0fcSNikolay Aleksandrov int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val) 9559163a0fcSNikolay Aleksandrov { 9569163a0fcSNikolay Aleksandrov struct net_bridge_port *p; 9579163a0fcSNikolay Aleksandrov 9589163a0fcSNikolay Aleksandrov /* allow to change the option if there are no port vlans configured */ 9599163a0fcSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 9609163a0fcSNikolay Aleksandrov struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 9619163a0fcSNikolay Aleksandrov 9629163a0fcSNikolay Aleksandrov if (vg->num_vlans) 9639163a0fcSNikolay Aleksandrov return -EBUSY; 9649163a0fcSNikolay Aleksandrov } 9659163a0fcSNikolay Aleksandrov 9669163a0fcSNikolay Aleksandrov switch (val) { 9679163a0fcSNikolay Aleksandrov case 0: 9689163a0fcSNikolay Aleksandrov case 1: 9699163a0fcSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_PER_PORT, !!val); 9709163a0fcSNikolay Aleksandrov break; 9719163a0fcSNikolay Aleksandrov default: 9729163a0fcSNikolay Aleksandrov return -EINVAL; 9739163a0fcSNikolay Aleksandrov } 9749163a0fcSNikolay Aleksandrov 9759163a0fcSNikolay Aleksandrov return 0; 9769163a0fcSNikolay Aleksandrov } 9779163a0fcSNikolay Aleksandrov 97877751ee8SNikolay Aleksandrov static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) 9795be5a2dfSVlad Yasevich { 9802594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 9812594e906SNikolay Aleksandrov 98277751ee8SNikolay Aleksandrov if (vid != vg->pvid) 9832594e906SNikolay Aleksandrov return false; 9842594e906SNikolay Aleksandrov 9852594e906SNikolay Aleksandrov v = br_vlan_lookup(&vg->vlan_hash, vid); 9862594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v) && 9872594e906SNikolay Aleksandrov (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 9882594e906SNikolay Aleksandrov return true; 9892594e906SNikolay Aleksandrov 9902594e906SNikolay Aleksandrov return false; 9915be5a2dfSVlad Yasevich } 9925be5a2dfSVlad Yasevich 9935be5a2dfSVlad Yasevich static void br_vlan_disable_default_pvid(struct net_bridge *br) 9945be5a2dfSVlad Yasevich { 9955be5a2dfSVlad Yasevich struct net_bridge_port *p; 9965be5a2dfSVlad Yasevich u16 pvid = br->default_pvid; 9975be5a2dfSVlad Yasevich 9985be5a2dfSVlad Yasevich /* Disable default_pvid on all ports where it is still 9995be5a2dfSVlad Yasevich * configured. 10005be5a2dfSVlad Yasevich */ 1001f545923bSNikolay Aleksandrov if (vlan_default_pvid(br_vlan_group(br), pvid)) { 1002f545923bSNikolay Aleksandrov if (!br_vlan_delete(br, pvid)) 1003f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); 1004f545923bSNikolay Aleksandrov } 10055be5a2dfSVlad Yasevich 10065be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 1007f545923bSNikolay Aleksandrov if (vlan_default_pvid(nbp_vlan_group(p), pvid) && 1008f545923bSNikolay Aleksandrov !nbp_vlan_delete(p, pvid)) 1009f545923bSNikolay Aleksandrov br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); 10105be5a2dfSVlad Yasevich } 10115be5a2dfSVlad Yasevich 10125be5a2dfSVlad Yasevich br->default_pvid = 0; 10135be5a2dfSVlad Yasevich } 10145be5a2dfSVlad Yasevich 1015169327d5SPetr Machata int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 1016169327d5SPetr Machata struct netlink_ext_ack *extack) 10175be5a2dfSVlad Yasevich { 10182594e906SNikolay Aleksandrov const struct net_bridge_vlan *pvent; 1019907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 10205be5a2dfSVlad Yasevich struct net_bridge_port *p; 1021f418af63SNikolay Aleksandrov unsigned long *changed; 1022f418af63SNikolay Aleksandrov bool vlchange; 10235be5a2dfSVlad Yasevich u16 old_pvid; 10245be5a2dfSVlad Yasevich int err = 0; 10255be5a2dfSVlad Yasevich 10260f963b75SNikolay Aleksandrov if (!pvid) { 10270f963b75SNikolay Aleksandrov br_vlan_disable_default_pvid(br); 10280f963b75SNikolay Aleksandrov return 0; 10290f963b75SNikolay Aleksandrov } 10300f963b75SNikolay Aleksandrov 1031459479daSAndy Shevchenko changed = bitmap_zalloc(BR_MAX_PORTS, GFP_KERNEL); 10325be5a2dfSVlad Yasevich if (!changed) 10335be5a2dfSVlad Yasevich return -ENOMEM; 10345be5a2dfSVlad Yasevich 10355be5a2dfSVlad Yasevich old_pvid = br->default_pvid; 10365be5a2dfSVlad Yasevich 10375be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 10385be5a2dfSVlad Yasevich * user configuration. 10395be5a2dfSVlad Yasevich */ 1040907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 1041907b1e6eSNikolay Aleksandrov pvent = br_vlan_find(vg, pvid); 1042907b1e6eSNikolay Aleksandrov if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && 10432594e906SNikolay Aleksandrov (!pvent || !br_vlan_should_use(pvent))) { 10445be5a2dfSVlad Yasevich err = br_vlan_add(br, pvid, 10455be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 10462594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1047f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1048169327d5SPetr Machata &vlchange, extack); 10495be5a2dfSVlad Yasevich if (err) 10505be5a2dfSVlad Yasevich goto out; 1051f545923bSNikolay Aleksandrov 1052f545923bSNikolay Aleksandrov if (br_vlan_delete(br, old_pvid)) 1053f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, old_pvid, 0, RTM_DELVLAN); 1054f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_NEWVLAN); 10555be5a2dfSVlad Yasevich set_bit(0, changed); 10565be5a2dfSVlad Yasevich } 10575be5a2dfSVlad Yasevich 10585be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 10595be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 10605be5a2dfSVlad Yasevich * user configuration. 10615be5a2dfSVlad Yasevich */ 1062907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 10635be5a2dfSVlad Yasevich if ((old_pvid && 1064907b1e6eSNikolay Aleksandrov !vlan_default_pvid(vg, old_pvid)) || 1065907b1e6eSNikolay Aleksandrov br_vlan_find(vg, pvid)) 10665be5a2dfSVlad Yasevich continue; 10675be5a2dfSVlad Yasevich 10685be5a2dfSVlad Yasevich err = nbp_vlan_add(p, pvid, 10695be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 1070f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1071169327d5SPetr Machata &vlchange, extack); 10725be5a2dfSVlad Yasevich if (err) 10735be5a2dfSVlad Yasevich goto err_port; 1074f545923bSNikolay Aleksandrov if (nbp_vlan_delete(p, old_pvid)) 1075f545923bSNikolay Aleksandrov br_vlan_notify(br, p, old_pvid, 0, RTM_DELVLAN); 1076f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, pvid, 0, RTM_NEWVLAN); 10775be5a2dfSVlad Yasevich set_bit(p->port_no, changed); 10785be5a2dfSVlad Yasevich } 10795be5a2dfSVlad Yasevich 10805be5a2dfSVlad Yasevich br->default_pvid = pvid; 10815be5a2dfSVlad Yasevich 10825be5a2dfSVlad Yasevich out: 1083459479daSAndy Shevchenko bitmap_free(changed); 10845be5a2dfSVlad Yasevich return err; 10855be5a2dfSVlad Yasevich 10865be5a2dfSVlad Yasevich err_port: 10875be5a2dfSVlad Yasevich list_for_each_entry_continue_reverse(p, &br->port_list, list) { 10885be5a2dfSVlad Yasevich if (!test_bit(p->port_no, changed)) 10895be5a2dfSVlad Yasevich continue; 10905be5a2dfSVlad Yasevich 1091f545923bSNikolay Aleksandrov if (old_pvid) { 10925be5a2dfSVlad Yasevich nbp_vlan_add(p, old_pvid, 10935be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 1094f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1095169327d5SPetr Machata &vlchange, NULL); 1096f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, old_pvid, 0, RTM_NEWVLAN); 1097f545923bSNikolay Aleksandrov } 10985be5a2dfSVlad Yasevich nbp_vlan_delete(p, pvid); 1099f545923bSNikolay Aleksandrov br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); 11005be5a2dfSVlad Yasevich } 11015be5a2dfSVlad Yasevich 11025be5a2dfSVlad Yasevich if (test_bit(0, changed)) { 1103f545923bSNikolay Aleksandrov if (old_pvid) { 11045be5a2dfSVlad Yasevich br_vlan_add(br, old_pvid, 11055be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 11062594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1107f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1108169327d5SPetr Machata &vlchange, NULL); 1109f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, old_pvid, 0, RTM_NEWVLAN); 1110f545923bSNikolay Aleksandrov } 11115be5a2dfSVlad Yasevich br_vlan_delete(br, pvid); 1112f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); 11135be5a2dfSVlad Yasevich } 11145be5a2dfSVlad Yasevich goto out; 11155be5a2dfSVlad Yasevich } 11165be5a2dfSVlad Yasevich 11179e781401SVladimir Oltean int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, 11189e781401SVladimir Oltean struct netlink_ext_ack *extack) 111996a20d9dSVlad Yasevich { 112096a20d9dSVlad Yasevich u16 pvid = val; 112196a20d9dSVlad Yasevich int err = 0; 112296a20d9dSVlad Yasevich 11235be5a2dfSVlad Yasevich if (val >= VLAN_VID_MASK) 112496a20d9dSVlad Yasevich return -EINVAL; 112596a20d9dSVlad Yasevich 112696a20d9dSVlad Yasevich if (pvid == br->default_pvid) 1127047831a9SXin Long goto out; 112896a20d9dSVlad Yasevich 112996a20d9dSVlad Yasevich /* Only allow default pvid change when filtering is disabled */ 1130ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED)) { 113196a20d9dSVlad Yasevich pr_info_once("Please disable vlan filtering to change default_pvid\n"); 113296a20d9dSVlad Yasevich err = -EPERM; 1133047831a9SXin Long goto out; 113496a20d9dSVlad Yasevich } 11359e781401SVladimir Oltean err = __br_vlan_set_default_pvid(br, pvid, extack); 1136047831a9SXin Long out: 113796a20d9dSVlad Yasevich return err; 113896a20d9dSVlad Yasevich } 113996a20d9dSVlad Yasevich 11405be5a2dfSVlad Yasevich int br_vlan_init(struct net_bridge *br) 11418580e211SToshiaki Makita { 1142907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 11432594e906SNikolay Aleksandrov int ret = -ENOMEM; 11442594e906SNikolay Aleksandrov 1145907b1e6eSNikolay Aleksandrov vg = kzalloc(sizeof(*vg), GFP_KERNEL); 1146907b1e6eSNikolay Aleksandrov if (!vg) 11472594e906SNikolay Aleksandrov goto out; 1148907b1e6eSNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 11492594e906SNikolay Aleksandrov if (ret) 11502594e906SNikolay Aleksandrov goto err_rhtbl; 1151efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1152efa5356bSRoopa Prabhu if (ret) 1153efa5356bSRoopa Prabhu goto err_tunnel_init; 1154907b1e6eSNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 11558580e211SToshiaki Makita br->vlan_proto = htons(ETH_P_8021Q); 115696a20d9dSVlad Yasevich br->default_pvid = 1; 1157907b1e6eSNikolay Aleksandrov rcu_assign_pointer(br->vlgrp, vg); 11582594e906SNikolay Aleksandrov 11592594e906SNikolay Aleksandrov out: 11602594e906SNikolay Aleksandrov return ret; 11612594e906SNikolay Aleksandrov 1162efa5356bSRoopa Prabhu err_tunnel_init: 1163907b1e6eSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 11642594e906SNikolay Aleksandrov err_rhtbl: 1165907b1e6eSNikolay Aleksandrov kfree(vg); 11662594e906SNikolay Aleksandrov 11672594e906SNikolay Aleksandrov goto out; 11682594e906SNikolay Aleksandrov } 11692594e906SNikolay Aleksandrov 1170169327d5SPetr Machata int nbp_vlan_init(struct net_bridge_port *p, struct netlink_ext_ack *extack) 11712594e906SNikolay Aleksandrov { 1172404cdbf0SElad Raz struct switchdev_attr attr = { 1173404cdbf0SElad Raz .orig_dev = p->br->dev, 1174404cdbf0SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 1175404cdbf0SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 1176ae75767eSNikolay Aleksandrov .u.vlan_filtering = br_opt_get(p->br, BROPT_VLAN_ENABLED), 1177404cdbf0SElad Raz }; 1178263344e6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 11792594e906SNikolay Aleksandrov int ret = -ENOMEM; 11802594e906SNikolay Aleksandrov 1181263344e6SNikolay Aleksandrov vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); 1182263344e6SNikolay Aleksandrov if (!vg) 11832594e906SNikolay Aleksandrov goto out; 11842594e906SNikolay Aleksandrov 1185dcbdf135SVladimir Oltean ret = switchdev_port_attr_set(p->dev, &attr, extack); 1186404cdbf0SElad Raz if (ret && ret != -EOPNOTSUPP) 1187404cdbf0SElad Raz goto err_vlan_enabled; 1188404cdbf0SElad Raz 1189263344e6SNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 11902594e906SNikolay Aleksandrov if (ret) 11912594e906SNikolay Aleksandrov goto err_rhtbl; 1192efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1193efa5356bSRoopa Prabhu if (ret) 1194efa5356bSRoopa Prabhu goto err_tunnel_init; 1195263344e6SNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 1196907b1e6eSNikolay Aleksandrov rcu_assign_pointer(p->vlgrp, vg); 11972594e906SNikolay Aleksandrov if (p->br->default_pvid) { 1198f418af63SNikolay Aleksandrov bool changed; 1199f418af63SNikolay Aleksandrov 12002594e906SNikolay Aleksandrov ret = nbp_vlan_add(p, p->br->default_pvid, 12012594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1202f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1203169327d5SPetr Machata &changed, extack); 12042594e906SNikolay Aleksandrov if (ret) 12052594e906SNikolay Aleksandrov goto err_vlan_add; 1206f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, p->br->default_pvid, 0, RTM_NEWVLAN); 12072594e906SNikolay Aleksandrov } 12082594e906SNikolay Aleksandrov out: 12092594e906SNikolay Aleksandrov return ret; 12102594e906SNikolay Aleksandrov 12112594e906SNikolay Aleksandrov err_vlan_add: 121207bc588fSIdo Schimmel RCU_INIT_POINTER(p->vlgrp, NULL); 121307bc588fSIdo Schimmel synchronize_rcu(); 1214efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 1215efa5356bSRoopa Prabhu err_tunnel_init: 1216efa5356bSRoopa Prabhu rhashtable_destroy(&vg->vlan_hash); 12172594e906SNikolay Aleksandrov err_rhtbl: 1218df2c4334SYotam Gigi err_vlan_enabled: 1219263344e6SNikolay Aleksandrov kfree(vg); 12202594e906SNikolay Aleksandrov 12212594e906SNikolay Aleksandrov goto out; 12228580e211SToshiaki Makita } 12238580e211SToshiaki Makita 12248adff41cSToshiaki Makita /* Must be protected by RTNL. 12258adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 1226f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 12278adff41cSToshiaki Makita */ 1228f418af63SNikolay Aleksandrov int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1229169327d5SPetr Machata bool *changed, struct netlink_ext_ack *extack) 1230243a2e63SVlad Yasevich { 12312594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 12322594e906SNikolay Aleksandrov int ret; 1233243a2e63SVlad Yasevich 1234243a2e63SVlad Yasevich ASSERT_RTNL(); 1235243a2e63SVlad Yasevich 1236f418af63SNikolay Aleksandrov *changed = false; 1237907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(nbp_vlan_group(port), vid); 12382594e906SNikolay Aleksandrov if (vlan) { 12397fbac984SIdo Schimmel /* Pass the flags to the hardware bridge */ 1240169327d5SPetr Machata ret = br_switchdev_port_vlan_add(port->dev, vid, flags, extack); 12417fbac984SIdo Schimmel if (ret && ret != -EOPNOTSUPP) 12427fbac984SIdo Schimmel return ret; 1243f418af63SNikolay Aleksandrov *changed = __vlan_add_flags(vlan, flags); 1244f418af63SNikolay Aleksandrov 12452594e906SNikolay Aleksandrov return 0; 1246243a2e63SVlad Yasevich } 1247243a2e63SVlad Yasevich 12482594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 12492594e906SNikolay Aleksandrov if (!vlan) 12502594e906SNikolay Aleksandrov return -ENOMEM; 1251243a2e63SVlad Yasevich 12522594e906SNikolay Aleksandrov vlan->vid = vid; 12532594e906SNikolay Aleksandrov vlan->port = port; 1254169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 12552594e906SNikolay Aleksandrov if (ret) 12562594e906SNikolay Aleksandrov kfree(vlan); 1257f418af63SNikolay Aleksandrov else 1258f418af63SNikolay Aleksandrov *changed = true; 1259243a2e63SVlad Yasevich 12602594e906SNikolay Aleksandrov return ret; 1261243a2e63SVlad Yasevich } 1262243a2e63SVlad Yasevich 12638adff41cSToshiaki Makita /* Must be protected by RTNL. 12648adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 12658adff41cSToshiaki Makita */ 1266243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1267243a2e63SVlad Yasevich { 12682594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 1269243a2e63SVlad Yasevich 1270243a2e63SVlad Yasevich ASSERT_RTNL(); 1271243a2e63SVlad Yasevich 1272907b1e6eSNikolay Aleksandrov v = br_vlan_find(nbp_vlan_group(port), vid); 12732594e906SNikolay Aleksandrov if (!v) 12742594e906SNikolay Aleksandrov return -ENOENT; 1275424bb9c9SToshiaki Makita br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); 12761ea2d020SNikolay Aleksandrov br_fdb_delete_by_port(port->br, port, vid, 0); 1277bc9a25d2SVlad Yasevich 12782594e906SNikolay Aleksandrov return __vlan_del(v); 1279243a2e63SVlad Yasevich } 1280243a2e63SVlad Yasevich 1281243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 1282243a2e63SVlad Yasevich { 1283f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 1284f409d0edSNikolay Aleksandrov 1285243a2e63SVlad Yasevich ASSERT_RTNL(); 1286243a2e63SVlad Yasevich 1287f409d0edSNikolay Aleksandrov vg = nbp_vlan_group(port); 1288f545923bSNikolay Aleksandrov __vlan_flush(port->br, port, vg); 1289f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(port->vlgrp, NULL); 1290f409d0edSNikolay Aleksandrov synchronize_rcu(); 1291f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 12925be5a2dfSVlad Yasevich } 1293a60c0903SNikolay Aleksandrov 1294a60c0903SNikolay Aleksandrov void br_vlan_get_stats(const struct net_bridge_vlan *v, 1295281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats) 1296a60c0903SNikolay Aleksandrov { 1297a60c0903SNikolay Aleksandrov int i; 1298a60c0903SNikolay Aleksandrov 1299a60c0903SNikolay Aleksandrov memset(stats, 0, sizeof(*stats)); 1300a60c0903SNikolay Aleksandrov for_each_possible_cpu(i) { 1301a60c0903SNikolay Aleksandrov u64 rxpackets, rxbytes, txpackets, txbytes; 1302281cc284SHeiner Kallweit struct pcpu_sw_netstats *cpu_stats; 1303a60c0903SNikolay Aleksandrov unsigned int start; 1304a60c0903SNikolay Aleksandrov 1305a60c0903SNikolay Aleksandrov cpu_stats = per_cpu_ptr(v->stats, i); 1306a60c0903SNikolay Aleksandrov do { 1307a60c0903SNikolay Aleksandrov start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); 1308a60c0903SNikolay Aleksandrov rxpackets = cpu_stats->rx_packets; 1309a60c0903SNikolay Aleksandrov rxbytes = cpu_stats->rx_bytes; 1310a60c0903SNikolay Aleksandrov txbytes = cpu_stats->tx_bytes; 1311a60c0903SNikolay Aleksandrov txpackets = cpu_stats->tx_packets; 1312a60c0903SNikolay Aleksandrov } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); 1313a60c0903SNikolay Aleksandrov 1314a60c0903SNikolay Aleksandrov stats->rx_packets += rxpackets; 1315a60c0903SNikolay Aleksandrov stats->rx_bytes += rxbytes; 1316a60c0903SNikolay Aleksandrov stats->tx_bytes += txbytes; 1317a60c0903SNikolay Aleksandrov stats->tx_packets += txpackets; 1318a60c0903SNikolay Aleksandrov } 1319a60c0903SNikolay Aleksandrov } 13204d4fd361SPetr Machata 132199f62a74SVladimir Oltean int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 13224d4fd361SPetr Machata { 13234d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 132499f62a74SVladimir Oltean struct net_bridge_port *p; 13254d4fd361SPetr Machata 132699f62a74SVladimir Oltean ASSERT_RTNL(); 132799f62a74SVladimir Oltean p = br_port_get_check_rtnl(dev); 13285a6db04cSIdo Schimmel if (p) 13295a6db04cSIdo Schimmel vg = nbp_vlan_group(p); 13305a6db04cSIdo Schimmel else if (netif_is_bridge_master(dev)) 13314d4fd361SPetr Machata vg = br_vlan_group(netdev_priv(dev)); 13324d4fd361SPetr Machata else 13334d4fd361SPetr Machata return -EINVAL; 13344d4fd361SPetr Machata 13354d4fd361SPetr Machata *p_pvid = br_get_pvid(vg); 13364d4fd361SPetr Machata return 0; 13374d4fd361SPetr Machata } 13384d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_pvid); 13394d4fd361SPetr Machata 13407582f5b7SPablo Neira Ayuso int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 13417582f5b7SPablo Neira Ayuso { 134299f62a74SVladimir Oltean struct net_bridge_vlan_group *vg; 134399f62a74SVladimir Oltean struct net_bridge_port *p; 134499f62a74SVladimir Oltean 134599f62a74SVladimir Oltean p = br_port_get_check_rcu(dev); 134699f62a74SVladimir Oltean if (p) 134799f62a74SVladimir Oltean vg = nbp_vlan_group_rcu(p); 134899f62a74SVladimir Oltean else if (netif_is_bridge_master(dev)) 134999f62a74SVladimir Oltean vg = br_vlan_group_rcu(netdev_priv(dev)); 135099f62a74SVladimir Oltean else 135199f62a74SVladimir Oltean return -EINVAL; 135299f62a74SVladimir Oltean 135399f62a74SVladimir Oltean *p_pvid = br_get_pvid(vg); 135499f62a74SVladimir Oltean return 0; 13557582f5b7SPablo Neira Ayuso } 13567582f5b7SPablo Neira Ayuso EXPORT_SYMBOL_GPL(br_vlan_get_pvid_rcu); 13577582f5b7SPablo Neira Ayuso 1358bcf2766bSFelix Fietkau void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1359bcf2766bSFelix Fietkau struct net_device_path_ctx *ctx, 1360bcf2766bSFelix Fietkau struct net_device_path *path) 1361bcf2766bSFelix Fietkau { 1362bcf2766bSFelix Fietkau struct net_bridge_vlan_group *vg; 1363bcf2766bSFelix Fietkau int idx = ctx->num_vlans - 1; 1364bcf2766bSFelix Fietkau u16 vid; 1365bcf2766bSFelix Fietkau 1366bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_KEEP; 1367bcf2766bSFelix Fietkau 1368bcf2766bSFelix Fietkau if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 1369bcf2766bSFelix Fietkau return; 1370bcf2766bSFelix Fietkau 1371bcf2766bSFelix Fietkau vg = br_vlan_group(br); 1372bcf2766bSFelix Fietkau 1373bcf2766bSFelix Fietkau if (idx >= 0 && 1374bcf2766bSFelix Fietkau ctx->vlan[idx].proto == br->vlan_proto) { 1375bcf2766bSFelix Fietkau vid = ctx->vlan[idx].id; 1376bcf2766bSFelix Fietkau } else { 1377bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_TAG; 1378bcf2766bSFelix Fietkau vid = br_get_pvid(vg); 1379bcf2766bSFelix Fietkau } 1380bcf2766bSFelix Fietkau 1381bcf2766bSFelix Fietkau path->bridge.vlan_id = vid; 1382bcf2766bSFelix Fietkau path->bridge.vlan_proto = br->vlan_proto; 1383bcf2766bSFelix Fietkau } 1384bcf2766bSFelix Fietkau 1385bcf2766bSFelix Fietkau int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1386bcf2766bSFelix Fietkau struct net_bridge_port *dst, 1387bcf2766bSFelix Fietkau struct net_device_path *path) 1388bcf2766bSFelix Fietkau { 1389bcf2766bSFelix Fietkau struct net_bridge_vlan_group *vg; 1390bcf2766bSFelix Fietkau struct net_bridge_vlan *v; 1391bcf2766bSFelix Fietkau 1392bcf2766bSFelix Fietkau if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 1393bcf2766bSFelix Fietkau return 0; 1394bcf2766bSFelix Fietkau 1395bcf2766bSFelix Fietkau vg = nbp_vlan_group_rcu(dst); 1396bcf2766bSFelix Fietkau v = br_vlan_find(vg, path->bridge.vlan_id); 1397bcf2766bSFelix Fietkau if (!v || !br_vlan_should_use(v)) 1398bcf2766bSFelix Fietkau return -EINVAL; 1399bcf2766bSFelix Fietkau 1400bcf2766bSFelix Fietkau if (!(v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 1401bcf2766bSFelix Fietkau return 0; 1402bcf2766bSFelix Fietkau 1403bcf2766bSFelix Fietkau if (path->bridge.vlan_mode == DEV_PATH_BR_VLAN_TAG) 1404bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_KEEP; 140526267bf9SFelix Fietkau else if (v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV) 140626267bf9SFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_UNTAG_HW; 1407bcf2766bSFelix Fietkau else 1408bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_UNTAG; 1409bcf2766bSFelix Fietkau 1410bcf2766bSFelix Fietkau return 0; 1411bcf2766bSFelix Fietkau } 1412bcf2766bSFelix Fietkau 14134d4fd361SPetr Machata int br_vlan_get_info(const struct net_device *dev, u16 vid, 14144d4fd361SPetr Machata struct bridge_vlan_info *p_vinfo) 14154d4fd361SPetr Machata { 14164d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 14174d4fd361SPetr Machata struct net_bridge_vlan *v; 14184d4fd361SPetr Machata struct net_bridge_port *p; 14194d4fd361SPetr Machata 14204d4fd361SPetr Machata ASSERT_RTNL(); 14214d4fd361SPetr Machata p = br_port_get_check_rtnl(dev); 14224d4fd361SPetr Machata if (p) 14234d4fd361SPetr Machata vg = nbp_vlan_group(p); 14242b18d79eSPetr Machata else if (netif_is_bridge_master(dev)) 14252b18d79eSPetr Machata vg = br_vlan_group(netdev_priv(dev)); 14264d4fd361SPetr Machata else 14274d4fd361SPetr Machata return -EINVAL; 14284d4fd361SPetr Machata 14294d4fd361SPetr Machata v = br_vlan_find(vg, vid); 14304d4fd361SPetr Machata if (!v) 14314d4fd361SPetr Machata return -ENOENT; 14324d4fd361SPetr Machata 14334d4fd361SPetr Machata p_vinfo->vid = vid; 14344d4fd361SPetr Machata p_vinfo->flags = v->flags; 1435f40d9b20SVladimir Oltean if (vid == br_get_pvid(vg)) 1436f40d9b20SVladimir Oltean p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID; 14374d4fd361SPetr Machata return 0; 14384d4fd361SPetr Machata } 14394d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_info); 14409c0ec2e7SMike Manning 14419c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev(const struct net_device *dev) 14429c0ec2e7SMike Manning { 14439c0ec2e7SMike Manning return is_vlan_dev(dev) && 14449c0ec2e7SMike Manning !!(vlan_dev_priv(dev)->flags & VLAN_FLAG_BRIDGE_BINDING); 14459c0ec2e7SMike Manning } 14469c0ec2e7SMike Manning 14479c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev_fn(struct net_device *dev, 1448eff74233STaehee Yoo __always_unused struct netdev_nested_priv *priv) 14499c0ec2e7SMike Manning { 14509c0ec2e7SMike Manning return br_vlan_is_bind_vlan_dev(dev); 14519c0ec2e7SMike Manning } 14529c0ec2e7SMike Manning 14539c0ec2e7SMike Manning static bool br_vlan_has_upper_bind_vlan_dev(struct net_device *dev) 14549c0ec2e7SMike Manning { 14559c0ec2e7SMike Manning int found; 14569c0ec2e7SMike Manning 14579c0ec2e7SMike Manning rcu_read_lock(); 14589c0ec2e7SMike Manning found = netdev_walk_all_upper_dev_rcu(dev, br_vlan_is_bind_vlan_dev_fn, 14599c0ec2e7SMike Manning NULL); 14609c0ec2e7SMike Manning rcu_read_unlock(); 14619c0ec2e7SMike Manning 14629c0ec2e7SMike Manning return !!found; 14639c0ec2e7SMike Manning } 14649c0ec2e7SMike Manning 14659c0ec2e7SMike Manning struct br_vlan_bind_walk_data { 14669c0ec2e7SMike Manning u16 vid; 14679c0ec2e7SMike Manning struct net_device *result; 14689c0ec2e7SMike Manning }; 14699c0ec2e7SMike Manning 14709c0ec2e7SMike Manning static int br_vlan_match_bind_vlan_dev_fn(struct net_device *dev, 1471eff74233STaehee Yoo struct netdev_nested_priv *priv) 14729c0ec2e7SMike Manning { 1473eff74233STaehee Yoo struct br_vlan_bind_walk_data *data = priv->data; 14749c0ec2e7SMike Manning int found = 0; 14759c0ec2e7SMike Manning 14769c0ec2e7SMike Manning if (br_vlan_is_bind_vlan_dev(dev) && 14779c0ec2e7SMike Manning vlan_dev_priv(dev)->vlan_id == data->vid) { 14789c0ec2e7SMike Manning data->result = dev; 14799c0ec2e7SMike Manning found = 1; 14809c0ec2e7SMike Manning } 14819c0ec2e7SMike Manning 14829c0ec2e7SMike Manning return found; 14839c0ec2e7SMike Manning } 14849c0ec2e7SMike Manning 14859c0ec2e7SMike Manning static struct net_device * 14869c0ec2e7SMike Manning br_vlan_get_upper_bind_vlan_dev(struct net_device *dev, u16 vid) 14879c0ec2e7SMike Manning { 14889c0ec2e7SMike Manning struct br_vlan_bind_walk_data data = { 14899c0ec2e7SMike Manning .vid = vid, 14909c0ec2e7SMike Manning }; 1491eff74233STaehee Yoo struct netdev_nested_priv priv = { 1492eff74233STaehee Yoo .data = (void *)&data, 1493eff74233STaehee Yoo }; 14949c0ec2e7SMike Manning 14959c0ec2e7SMike Manning rcu_read_lock(); 14969c0ec2e7SMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_match_bind_vlan_dev_fn, 1497eff74233STaehee Yoo &priv); 14989c0ec2e7SMike Manning rcu_read_unlock(); 14999c0ec2e7SMike Manning 15009c0ec2e7SMike Manning return data.result; 15019c0ec2e7SMike Manning } 15029c0ec2e7SMike Manning 15039c0ec2e7SMike Manning static bool br_vlan_is_dev_up(const struct net_device *dev) 15049c0ec2e7SMike Manning { 15059c0ec2e7SMike Manning return !!(dev->flags & IFF_UP) && netif_oper_up(dev); 15069c0ec2e7SMike Manning } 15079c0ec2e7SMike Manning 15089c0ec2e7SMike Manning static void br_vlan_set_vlan_dev_state(const struct net_bridge *br, 15099c0ec2e7SMike Manning struct net_device *vlan_dev) 15109c0ec2e7SMike Manning { 15119c0ec2e7SMike Manning u16 vid = vlan_dev_priv(vlan_dev)->vlan_id; 15129c0ec2e7SMike Manning struct net_bridge_vlan_group *vg; 15139c0ec2e7SMike Manning struct net_bridge_port *p; 15149c0ec2e7SMike Manning bool has_carrier = false; 15159c0ec2e7SMike Manning 15168e1acd4fSMike Manning if (!netif_carrier_ok(br->dev)) { 15178e1acd4fSMike Manning netif_carrier_off(vlan_dev); 15188e1acd4fSMike Manning return; 15198e1acd4fSMike Manning } 15208e1acd4fSMike Manning 15219c0ec2e7SMike Manning list_for_each_entry(p, &br->port_list, list) { 15229c0ec2e7SMike Manning vg = nbp_vlan_group(p); 15239c0ec2e7SMike Manning if (br_vlan_find(vg, vid) && br_vlan_is_dev_up(p->dev)) { 15249c0ec2e7SMike Manning has_carrier = true; 15259c0ec2e7SMike Manning break; 15269c0ec2e7SMike Manning } 15279c0ec2e7SMike Manning } 15289c0ec2e7SMike Manning 15299c0ec2e7SMike Manning if (has_carrier) 15309c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 15319c0ec2e7SMike Manning else 15329c0ec2e7SMike Manning netif_carrier_off(vlan_dev); 15339c0ec2e7SMike Manning } 15349c0ec2e7SMike Manning 15359c0ec2e7SMike Manning static void br_vlan_set_all_vlan_dev_state(struct net_bridge_port *p) 15369c0ec2e7SMike Manning { 15379c0ec2e7SMike Manning struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 15389c0ec2e7SMike Manning struct net_bridge_vlan *vlan; 15399c0ec2e7SMike Manning struct net_device *vlan_dev; 15409c0ec2e7SMike Manning 15419c0ec2e7SMike Manning list_for_each_entry(vlan, &vg->vlan_list, vlist) { 15429c0ec2e7SMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, 15439c0ec2e7SMike Manning vlan->vid); 15449c0ec2e7SMike Manning if (vlan_dev) { 15458e1acd4fSMike Manning if (br_vlan_is_dev_up(p->dev)) { 15468e1acd4fSMike Manning if (netif_carrier_ok(p->br->dev)) 15479c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 15488e1acd4fSMike Manning } else { 15499c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 15509c0ec2e7SMike Manning } 15519c0ec2e7SMike Manning } 15529c0ec2e7SMike Manning } 15538e1acd4fSMike Manning } 15549c0ec2e7SMike Manning 15559c0ec2e7SMike Manning static void br_vlan_upper_change(struct net_device *dev, 15569c0ec2e7SMike Manning struct net_device *upper_dev, 15579c0ec2e7SMike Manning bool linking) 15589c0ec2e7SMike Manning { 15599c0ec2e7SMike Manning struct net_bridge *br = netdev_priv(dev); 15609c0ec2e7SMike Manning 15619c0ec2e7SMike Manning if (!br_vlan_is_bind_vlan_dev(upper_dev)) 15629c0ec2e7SMike Manning return; 15639c0ec2e7SMike Manning 15649c0ec2e7SMike Manning if (linking) { 15659c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(br, upper_dev); 15669c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, true); 15679c0ec2e7SMike Manning } else { 15689c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, 15699c0ec2e7SMike Manning br_vlan_has_upper_bind_vlan_dev(dev)); 15709c0ec2e7SMike Manning } 15719c0ec2e7SMike Manning } 15729c0ec2e7SMike Manning 15738e1acd4fSMike Manning struct br_vlan_link_state_walk_data { 15748e1acd4fSMike Manning struct net_bridge *br; 15758e1acd4fSMike Manning }; 15768e1acd4fSMike Manning 15778e1acd4fSMike Manning static int br_vlan_link_state_change_fn(struct net_device *vlan_dev, 1578eff74233STaehee Yoo struct netdev_nested_priv *priv) 15798e1acd4fSMike Manning { 1580eff74233STaehee Yoo struct br_vlan_link_state_walk_data *data = priv->data; 15818e1acd4fSMike Manning 15828e1acd4fSMike Manning if (br_vlan_is_bind_vlan_dev(vlan_dev)) 15838e1acd4fSMike Manning br_vlan_set_vlan_dev_state(data->br, vlan_dev); 15848e1acd4fSMike Manning 15858e1acd4fSMike Manning return 0; 15868e1acd4fSMike Manning } 15878e1acd4fSMike Manning 15888e1acd4fSMike Manning static void br_vlan_link_state_change(struct net_device *dev, 15898e1acd4fSMike Manning struct net_bridge *br) 15908e1acd4fSMike Manning { 15918e1acd4fSMike Manning struct br_vlan_link_state_walk_data data = { 15928e1acd4fSMike Manning .br = br 15938e1acd4fSMike Manning }; 1594eff74233STaehee Yoo struct netdev_nested_priv priv = { 1595eff74233STaehee Yoo .data = (void *)&data, 1596eff74233STaehee Yoo }; 15978e1acd4fSMike Manning 15988e1acd4fSMike Manning rcu_read_lock(); 15998e1acd4fSMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_link_state_change_fn, 1600eff74233STaehee Yoo &priv); 16018e1acd4fSMike Manning rcu_read_unlock(); 16028e1acd4fSMike Manning } 16038e1acd4fSMike Manning 16049c0ec2e7SMike Manning /* Must be protected by RTNL. */ 160580900acdSMike Manning static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid) 160680900acdSMike Manning { 160780900acdSMike Manning struct net_device *vlan_dev; 160880900acdSMike Manning 160980900acdSMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 161080900acdSMike Manning return; 161180900acdSMike Manning 161280900acdSMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, vid); 161380900acdSMike Manning if (vlan_dev) 161480900acdSMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 161580900acdSMike Manning } 161680900acdSMike Manning 161780900acdSMike Manning /* Must be protected by RTNL. */ 1618091adf9bSNikolay Aleksandrov int br_vlan_bridge_event(struct net_device *dev, unsigned long event, void *ptr) 16199c0ec2e7SMike Manning { 16209c0ec2e7SMike Manning struct netdev_notifier_changeupper_info *info; 1621091adf9bSNikolay Aleksandrov struct net_bridge *br = netdev_priv(dev); 1622f545923bSNikolay Aleksandrov int vlcmd = 0, ret = 0; 1623f545923bSNikolay Aleksandrov bool changed = false; 16249c0ec2e7SMike Manning 16259c0ec2e7SMike Manning switch (event) { 1626091adf9bSNikolay Aleksandrov case NETDEV_REGISTER: 1627091adf9bSNikolay Aleksandrov ret = br_vlan_add(br, br->default_pvid, 1628091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1629091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1630091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, &changed, NULL); 1631f545923bSNikolay Aleksandrov vlcmd = RTM_NEWVLAN; 1632091adf9bSNikolay Aleksandrov break; 1633091adf9bSNikolay Aleksandrov case NETDEV_UNREGISTER: 1634f545923bSNikolay Aleksandrov changed = !br_vlan_delete(br, br->default_pvid); 1635f545923bSNikolay Aleksandrov vlcmd = RTM_DELVLAN; 1636091adf9bSNikolay Aleksandrov break; 16379c0ec2e7SMike Manning case NETDEV_CHANGEUPPER: 16389c0ec2e7SMike Manning info = ptr; 16399c0ec2e7SMike Manning br_vlan_upper_change(dev, info->upper_dev, info->linking); 16409c0ec2e7SMike Manning break; 16418e1acd4fSMike Manning 16428e1acd4fSMike Manning case NETDEV_CHANGE: 16438e1acd4fSMike Manning case NETDEV_UP: 16448e1acd4fSMike Manning if (!br_opt_get(br, BROPT_VLAN_BRIDGE_BINDING)) 1645091adf9bSNikolay Aleksandrov break; 16468e1acd4fSMike Manning br_vlan_link_state_change(dev, br); 16478e1acd4fSMike Manning break; 16489c0ec2e7SMike Manning } 1649f545923bSNikolay Aleksandrov if (changed) 1650f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, br->default_pvid, 0, vlcmd); 1651091adf9bSNikolay Aleksandrov 1652091adf9bSNikolay Aleksandrov return ret; 16539c0ec2e7SMike Manning } 16549c0ec2e7SMike Manning 16559c0ec2e7SMike Manning /* Must be protected by RTNL. */ 16569c0ec2e7SMike Manning void br_vlan_port_event(struct net_bridge_port *p, unsigned long event) 16579c0ec2e7SMike Manning { 16589c0ec2e7SMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 16599c0ec2e7SMike Manning return; 16609c0ec2e7SMike Manning 16619c0ec2e7SMike Manning switch (event) { 16629c0ec2e7SMike Manning case NETDEV_CHANGE: 16639c0ec2e7SMike Manning case NETDEV_DOWN: 16649c0ec2e7SMike Manning case NETDEV_UP: 16659c0ec2e7SMike Manning br_vlan_set_all_vlan_dev_state(p); 16669c0ec2e7SMike Manning break; 16679c0ec2e7SMike Manning } 16689c0ec2e7SMike Manning } 16698dcea187SNikolay Aleksandrov 167056d09976SNikolay Aleksandrov static bool br_vlan_stats_fill(struct sk_buff *skb, 167156d09976SNikolay Aleksandrov const struct net_bridge_vlan *v) 167256d09976SNikolay Aleksandrov { 1673281cc284SHeiner Kallweit struct pcpu_sw_netstats stats; 167456d09976SNikolay Aleksandrov struct nlattr *nest; 167556d09976SNikolay Aleksandrov 167656d09976SNikolay Aleksandrov nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY_STATS); 167756d09976SNikolay Aleksandrov if (!nest) 167856d09976SNikolay Aleksandrov return false; 167956d09976SNikolay Aleksandrov 168056d09976SNikolay Aleksandrov br_vlan_get_stats(v, &stats); 168156d09976SNikolay Aleksandrov if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_BYTES, stats.rx_bytes, 168256d09976SNikolay Aleksandrov BRIDGE_VLANDB_STATS_PAD) || 168356d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_PACKETS, 168456d09976SNikolay Aleksandrov stats.rx_packets, BRIDGE_VLANDB_STATS_PAD) || 168556d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_BYTES, stats.tx_bytes, 168656d09976SNikolay Aleksandrov BRIDGE_VLANDB_STATS_PAD) || 168756d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_PACKETS, 168856d09976SNikolay Aleksandrov stats.tx_packets, BRIDGE_VLANDB_STATS_PAD)) 168956d09976SNikolay Aleksandrov goto out_err; 169056d09976SNikolay Aleksandrov 169156d09976SNikolay Aleksandrov nla_nest_end(skb, nest); 169256d09976SNikolay Aleksandrov 169356d09976SNikolay Aleksandrov return true; 169456d09976SNikolay Aleksandrov 169556d09976SNikolay Aleksandrov out_err: 169656d09976SNikolay Aleksandrov nla_nest_cancel(skb, nest); 169756d09976SNikolay Aleksandrov return false; 169856d09976SNikolay Aleksandrov } 169956d09976SNikolay Aleksandrov 17007a53e718SNikolay Aleksandrov /* v_opts is used to dump the options which must be equal in the whole range */ 17010ab55879SNikolay Aleksandrov static bool br_vlan_fill_vids(struct sk_buff *skb, u16 vid, u16 vid_range, 17027a53e718SNikolay Aleksandrov const struct net_bridge_vlan *v_opts, 170356d09976SNikolay Aleksandrov u16 flags, 170456d09976SNikolay Aleksandrov bool dump_stats) 17058dcea187SNikolay Aleksandrov { 17068dcea187SNikolay Aleksandrov struct bridge_vlan_info info; 17078dcea187SNikolay Aleksandrov struct nlattr *nest; 17088dcea187SNikolay Aleksandrov 17098dcea187SNikolay Aleksandrov nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY); 17108dcea187SNikolay Aleksandrov if (!nest) 17118dcea187SNikolay Aleksandrov return false; 17128dcea187SNikolay Aleksandrov 17138dcea187SNikolay Aleksandrov memset(&info, 0, sizeof(info)); 17148dcea187SNikolay Aleksandrov info.vid = vid; 17158dcea187SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 17168dcea187SNikolay Aleksandrov info.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 17178dcea187SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_PVID) 17188dcea187SNikolay Aleksandrov info.flags |= BRIDGE_VLAN_INFO_PVID; 17198dcea187SNikolay Aleksandrov 17208dcea187SNikolay Aleksandrov if (nla_put(skb, BRIDGE_VLANDB_ENTRY_INFO, sizeof(info), &info)) 17218dcea187SNikolay Aleksandrov goto out_err; 17228dcea187SNikolay Aleksandrov 17230ab55879SNikolay Aleksandrov if (vid_range && vid < vid_range && 17240ab55879SNikolay Aleksandrov !(flags & BRIDGE_VLAN_INFO_PVID) && 17250ab55879SNikolay Aleksandrov nla_put_u16(skb, BRIDGE_VLANDB_ENTRY_RANGE, vid_range)) 17260ab55879SNikolay Aleksandrov goto out_err; 17270ab55879SNikolay Aleksandrov 172856d09976SNikolay Aleksandrov if (v_opts) { 172956d09976SNikolay Aleksandrov if (!br_vlan_opts_fill(skb, v_opts)) 17307a53e718SNikolay Aleksandrov goto out_err; 17317a53e718SNikolay Aleksandrov 173256d09976SNikolay Aleksandrov if (dump_stats && !br_vlan_stats_fill(skb, v_opts)) 173356d09976SNikolay Aleksandrov goto out_err; 173456d09976SNikolay Aleksandrov } 173556d09976SNikolay Aleksandrov 17368dcea187SNikolay Aleksandrov nla_nest_end(skb, nest); 17378dcea187SNikolay Aleksandrov 17388dcea187SNikolay Aleksandrov return true; 17398dcea187SNikolay Aleksandrov 17408dcea187SNikolay Aleksandrov out_err: 17418dcea187SNikolay Aleksandrov nla_nest_cancel(skb, nest); 17428dcea187SNikolay Aleksandrov return false; 17438dcea187SNikolay Aleksandrov } 17448dcea187SNikolay Aleksandrov 1745cf5bddb9SNikolay Aleksandrov static size_t rtnl_vlan_nlmsg_size(void) 1746cf5bddb9SNikolay Aleksandrov { 1747cf5bddb9SNikolay Aleksandrov return NLMSG_ALIGN(sizeof(struct br_vlan_msg)) 1748cf5bddb9SNikolay Aleksandrov + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY */ 1749cf5bddb9SNikolay Aleksandrov + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_ENTRY_RANGE */ 17507a53e718SNikolay Aleksandrov + nla_total_size(sizeof(struct bridge_vlan_info)) /* BRIDGE_VLANDB_ENTRY_INFO */ 17517a53e718SNikolay Aleksandrov + br_vlan_opts_nl_size(); /* bridge vlan options */ 1752cf5bddb9SNikolay Aleksandrov } 1753cf5bddb9SNikolay Aleksandrov 1754cf5bddb9SNikolay Aleksandrov void br_vlan_notify(const struct net_bridge *br, 1755cf5bddb9SNikolay Aleksandrov const struct net_bridge_port *p, 1756cf5bddb9SNikolay Aleksandrov u16 vid, u16 vid_range, 1757cf5bddb9SNikolay Aleksandrov int cmd) 1758cf5bddb9SNikolay Aleksandrov { 1759cf5bddb9SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 17607a53e718SNikolay Aleksandrov struct net_bridge_vlan *v = NULL; 1761cf5bddb9SNikolay Aleksandrov struct br_vlan_msg *bvm; 1762cf5bddb9SNikolay Aleksandrov struct nlmsghdr *nlh; 1763cf5bddb9SNikolay Aleksandrov struct sk_buff *skb; 1764cf5bddb9SNikolay Aleksandrov int err = -ENOBUFS; 1765cf5bddb9SNikolay Aleksandrov struct net *net; 1766cf5bddb9SNikolay Aleksandrov u16 flags = 0; 1767cf5bddb9SNikolay Aleksandrov int ifindex; 1768cf5bddb9SNikolay Aleksandrov 1769cf5bddb9SNikolay Aleksandrov /* right now notifications are done only with rtnl held */ 1770cf5bddb9SNikolay Aleksandrov ASSERT_RTNL(); 1771cf5bddb9SNikolay Aleksandrov 1772cf5bddb9SNikolay Aleksandrov if (p) { 1773cf5bddb9SNikolay Aleksandrov ifindex = p->dev->ifindex; 1774cf5bddb9SNikolay Aleksandrov vg = nbp_vlan_group(p); 1775cf5bddb9SNikolay Aleksandrov net = dev_net(p->dev); 1776cf5bddb9SNikolay Aleksandrov } else { 1777cf5bddb9SNikolay Aleksandrov ifindex = br->dev->ifindex; 1778cf5bddb9SNikolay Aleksandrov vg = br_vlan_group(br); 1779cf5bddb9SNikolay Aleksandrov net = dev_net(br->dev); 1780cf5bddb9SNikolay Aleksandrov } 1781cf5bddb9SNikolay Aleksandrov 1782cf5bddb9SNikolay Aleksandrov skb = nlmsg_new(rtnl_vlan_nlmsg_size(), GFP_KERNEL); 1783cf5bddb9SNikolay Aleksandrov if (!skb) 1784cf5bddb9SNikolay Aleksandrov goto out_err; 1785cf5bddb9SNikolay Aleksandrov 1786cf5bddb9SNikolay Aleksandrov err = -EMSGSIZE; 1787cf5bddb9SNikolay Aleksandrov nlh = nlmsg_put(skb, 0, 0, cmd, sizeof(*bvm), 0); 1788cf5bddb9SNikolay Aleksandrov if (!nlh) 1789cf5bddb9SNikolay Aleksandrov goto out_err; 1790cf5bddb9SNikolay Aleksandrov bvm = nlmsg_data(nlh); 1791cf5bddb9SNikolay Aleksandrov memset(bvm, 0, sizeof(*bvm)); 1792cf5bddb9SNikolay Aleksandrov bvm->family = AF_BRIDGE; 1793cf5bddb9SNikolay Aleksandrov bvm->ifindex = ifindex; 1794cf5bddb9SNikolay Aleksandrov 1795cf5bddb9SNikolay Aleksandrov switch (cmd) { 1796cf5bddb9SNikolay Aleksandrov case RTM_NEWVLAN: 1797cf5bddb9SNikolay Aleksandrov /* need to find the vlan due to flags/options */ 1798cf5bddb9SNikolay Aleksandrov v = br_vlan_find(vg, vid); 1799cf5bddb9SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 1800cf5bddb9SNikolay Aleksandrov goto out_kfree; 1801cf5bddb9SNikolay Aleksandrov 1802cf5bddb9SNikolay Aleksandrov flags = v->flags; 1803cf5bddb9SNikolay Aleksandrov if (br_get_pvid(vg) == v->vid) 1804cf5bddb9SNikolay Aleksandrov flags |= BRIDGE_VLAN_INFO_PVID; 1805cf5bddb9SNikolay Aleksandrov break; 1806cf5bddb9SNikolay Aleksandrov case RTM_DELVLAN: 1807cf5bddb9SNikolay Aleksandrov break; 1808cf5bddb9SNikolay Aleksandrov default: 1809cf5bddb9SNikolay Aleksandrov goto out_kfree; 1810cf5bddb9SNikolay Aleksandrov } 1811cf5bddb9SNikolay Aleksandrov 181256d09976SNikolay Aleksandrov if (!br_vlan_fill_vids(skb, vid, vid_range, v, flags, false)) 1813cf5bddb9SNikolay Aleksandrov goto out_err; 1814cf5bddb9SNikolay Aleksandrov 1815cf5bddb9SNikolay Aleksandrov nlmsg_end(skb, nlh); 1816cf5bddb9SNikolay Aleksandrov rtnl_notify(skb, net, 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL); 1817cf5bddb9SNikolay Aleksandrov return; 1818cf5bddb9SNikolay Aleksandrov 1819cf5bddb9SNikolay Aleksandrov out_err: 1820cf5bddb9SNikolay Aleksandrov rtnl_set_sk_err(net, RTNLGRP_BRVLAN, err); 1821cf5bddb9SNikolay Aleksandrov out_kfree: 1822cf5bddb9SNikolay Aleksandrov kfree_skb(skb); 1823cf5bddb9SNikolay Aleksandrov } 1824cf5bddb9SNikolay Aleksandrov 182522f67cdfSVladimir Oltean static int br_vlan_replay_one(struct notifier_block *nb, 182622f67cdfSVladimir Oltean struct net_device *dev, 182722f67cdfSVladimir Oltean struct switchdev_obj_port_vlan *vlan, 18287e8c1858SVladimir Oltean const void *ctx, unsigned long action, 18297e8c1858SVladimir Oltean struct netlink_ext_ack *extack) 183022f67cdfSVladimir Oltean { 183122f67cdfSVladimir Oltean struct switchdev_notifier_port_obj_info obj_info = { 183222f67cdfSVladimir Oltean .info = { 183322f67cdfSVladimir Oltean .dev = dev, 183422f67cdfSVladimir Oltean .extack = extack, 18350d2cfbd4SVladimir Oltean .ctx = ctx, 183622f67cdfSVladimir Oltean }, 183722f67cdfSVladimir Oltean .obj = &vlan->obj, 183822f67cdfSVladimir Oltean }; 183922f67cdfSVladimir Oltean int err; 184022f67cdfSVladimir Oltean 18417e8c1858SVladimir Oltean err = nb->notifier_call(nb, action, &obj_info); 184222f67cdfSVladimir Oltean return notifier_to_errno(err); 184322f67cdfSVladimir Oltean } 184422f67cdfSVladimir Oltean 184522f67cdfSVladimir Oltean int br_vlan_replay(struct net_device *br_dev, struct net_device *dev, 18467e8c1858SVladimir Oltean const void *ctx, bool adding, struct notifier_block *nb, 18470d2cfbd4SVladimir Oltean struct netlink_ext_ack *extack) 184822f67cdfSVladimir Oltean { 184922f67cdfSVladimir Oltean struct net_bridge_vlan_group *vg; 185022f67cdfSVladimir Oltean struct net_bridge_vlan *v; 185122f67cdfSVladimir Oltean struct net_bridge_port *p; 185222f67cdfSVladimir Oltean struct net_bridge *br; 18537e8c1858SVladimir Oltean unsigned long action; 185422f67cdfSVladimir Oltean int err = 0; 185522f67cdfSVladimir Oltean u16 pvid; 185622f67cdfSVladimir Oltean 185722f67cdfSVladimir Oltean ASSERT_RTNL(); 185822f67cdfSVladimir Oltean 185922f67cdfSVladimir Oltean if (!netif_is_bridge_master(br_dev)) 186022f67cdfSVladimir Oltean return -EINVAL; 186122f67cdfSVladimir Oltean 186222f67cdfSVladimir Oltean if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) 186322f67cdfSVladimir Oltean return -EINVAL; 186422f67cdfSVladimir Oltean 186522f67cdfSVladimir Oltean if (netif_is_bridge_master(dev)) { 186622f67cdfSVladimir Oltean br = netdev_priv(dev); 186722f67cdfSVladimir Oltean vg = br_vlan_group(br); 186822f67cdfSVladimir Oltean p = NULL; 186922f67cdfSVladimir Oltean } else { 187022f67cdfSVladimir Oltean p = br_port_get_rtnl(dev); 187122f67cdfSVladimir Oltean if (WARN_ON(!p)) 187222f67cdfSVladimir Oltean return -EINVAL; 187322f67cdfSVladimir Oltean vg = nbp_vlan_group(p); 187422f67cdfSVladimir Oltean br = p->br; 187522f67cdfSVladimir Oltean } 187622f67cdfSVladimir Oltean 187722f67cdfSVladimir Oltean if (!vg) 187822f67cdfSVladimir Oltean return 0; 187922f67cdfSVladimir Oltean 18807e8c1858SVladimir Oltean if (adding) 18817e8c1858SVladimir Oltean action = SWITCHDEV_PORT_OBJ_ADD; 18827e8c1858SVladimir Oltean else 18837e8c1858SVladimir Oltean action = SWITCHDEV_PORT_OBJ_DEL; 18847e8c1858SVladimir Oltean 188522f67cdfSVladimir Oltean pvid = br_get_pvid(vg); 188622f67cdfSVladimir Oltean 188722f67cdfSVladimir Oltean list_for_each_entry(v, &vg->vlan_list, vlist) { 188822f67cdfSVladimir Oltean struct switchdev_obj_port_vlan vlan = { 188922f67cdfSVladimir Oltean .obj.orig_dev = dev, 189022f67cdfSVladimir Oltean .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 189122f67cdfSVladimir Oltean .flags = br_vlan_flags(v, pvid), 189222f67cdfSVladimir Oltean .vid = v->vid, 189322f67cdfSVladimir Oltean }; 189422f67cdfSVladimir Oltean 189522f67cdfSVladimir Oltean if (!br_vlan_should_use(v)) 189622f67cdfSVladimir Oltean continue; 189722f67cdfSVladimir Oltean 18987e8c1858SVladimir Oltean err = br_vlan_replay_one(nb, dev, &vlan, ctx, action, extack); 189922f67cdfSVladimir Oltean if (err) 190022f67cdfSVladimir Oltean return err; 190122f67cdfSVladimir Oltean } 190222f67cdfSVladimir Oltean 190322f67cdfSVladimir Oltean return err; 190422f67cdfSVladimir Oltean } 190522f67cdfSVladimir Oltean EXPORT_SYMBOL_GPL(br_vlan_replay); 190622f67cdfSVladimir Oltean 19070ab55879SNikolay Aleksandrov /* check if v_curr can enter a range ending in range_end */ 1908a5d29ae2SNikolay Aleksandrov bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 19090ab55879SNikolay Aleksandrov const struct net_bridge_vlan *range_end) 19100ab55879SNikolay Aleksandrov { 19110ab55879SNikolay Aleksandrov return v_curr->vid - range_end->vid == 1 && 19127a53e718SNikolay Aleksandrov range_end->flags == v_curr->flags && 191399f7c5e0SNikolay Aleksandrov br_vlan_opts_eq_range(v_curr, range_end); 19140ab55879SNikolay Aleksandrov } 19150ab55879SNikolay Aleksandrov 19168dcea187SNikolay Aleksandrov static int br_vlan_dump_dev(const struct net_device *dev, 19178dcea187SNikolay Aleksandrov struct sk_buff *skb, 191856d09976SNikolay Aleksandrov struct netlink_callback *cb, 191956d09976SNikolay Aleksandrov u32 dump_flags) 19208dcea187SNikolay Aleksandrov { 19210ab55879SNikolay Aleksandrov struct net_bridge_vlan *v, *range_start = NULL, *range_end = NULL; 1922*743a53d9SNikolay Aleksandrov bool dump_global = !!(dump_flags & BRIDGE_VLANDB_DUMPF_GLOBAL); 192356d09976SNikolay Aleksandrov bool dump_stats = !!(dump_flags & BRIDGE_VLANDB_DUMPF_STATS); 19248dcea187SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 19258dcea187SNikolay Aleksandrov int idx = 0, s_idx = cb->args[1]; 19268dcea187SNikolay Aleksandrov struct nlmsghdr *nlh = NULL; 19278dcea187SNikolay Aleksandrov struct net_bridge_port *p; 19288dcea187SNikolay Aleksandrov struct br_vlan_msg *bvm; 19298dcea187SNikolay Aleksandrov struct net_bridge *br; 19308dcea187SNikolay Aleksandrov int err = 0; 19318dcea187SNikolay Aleksandrov u16 pvid; 19328dcea187SNikolay Aleksandrov 19338dcea187SNikolay Aleksandrov if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) 19348dcea187SNikolay Aleksandrov return -EINVAL; 19358dcea187SNikolay Aleksandrov 19368dcea187SNikolay Aleksandrov if (netif_is_bridge_master(dev)) { 19378dcea187SNikolay Aleksandrov br = netdev_priv(dev); 19388dcea187SNikolay Aleksandrov vg = br_vlan_group_rcu(br); 19398dcea187SNikolay Aleksandrov p = NULL; 19408dcea187SNikolay Aleksandrov } else { 1941*743a53d9SNikolay Aleksandrov /* global options are dumped only for bridge devices */ 1942*743a53d9SNikolay Aleksandrov if (dump_global) 1943*743a53d9SNikolay Aleksandrov return 0; 1944*743a53d9SNikolay Aleksandrov 19458dcea187SNikolay Aleksandrov p = br_port_get_rcu(dev); 19468dcea187SNikolay Aleksandrov if (WARN_ON(!p)) 19478dcea187SNikolay Aleksandrov return -EINVAL; 19488dcea187SNikolay Aleksandrov vg = nbp_vlan_group_rcu(p); 19498dcea187SNikolay Aleksandrov br = p->br; 19508dcea187SNikolay Aleksandrov } 19518dcea187SNikolay Aleksandrov 19528dcea187SNikolay Aleksandrov if (!vg) 19538dcea187SNikolay Aleksandrov return 0; 19548dcea187SNikolay Aleksandrov 19558dcea187SNikolay Aleksandrov nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 19568dcea187SNikolay Aleksandrov RTM_NEWVLAN, sizeof(*bvm), NLM_F_MULTI); 19578dcea187SNikolay Aleksandrov if (!nlh) 19588dcea187SNikolay Aleksandrov return -EMSGSIZE; 19598dcea187SNikolay Aleksandrov bvm = nlmsg_data(nlh); 19608dcea187SNikolay Aleksandrov memset(bvm, 0, sizeof(*bvm)); 19618dcea187SNikolay Aleksandrov bvm->family = PF_BRIDGE; 19628dcea187SNikolay Aleksandrov bvm->ifindex = dev->ifindex; 19638dcea187SNikolay Aleksandrov pvid = br_get_pvid(vg); 19648dcea187SNikolay Aleksandrov 19650ab55879SNikolay Aleksandrov /* idx must stay at range's beginning until it is filled in */ 19668dcea187SNikolay Aleksandrov list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 1967*743a53d9SNikolay Aleksandrov if (!dump_global && !br_vlan_should_use(v)) 19688dcea187SNikolay Aleksandrov continue; 19690ab55879SNikolay Aleksandrov if (idx < s_idx) { 19700ab55879SNikolay Aleksandrov idx++; 19710ab55879SNikolay Aleksandrov continue; 19720ab55879SNikolay Aleksandrov } 19730ab55879SNikolay Aleksandrov 19740ab55879SNikolay Aleksandrov if (!range_start) { 19750ab55879SNikolay Aleksandrov range_start = v; 19760ab55879SNikolay Aleksandrov range_end = v; 19770ab55879SNikolay Aleksandrov continue; 19780ab55879SNikolay Aleksandrov } 19790ab55879SNikolay Aleksandrov 1980*743a53d9SNikolay Aleksandrov if (dump_global) { 1981*743a53d9SNikolay Aleksandrov if (br_vlan_global_opts_can_enter_range(v, range_end)) 1982*743a53d9SNikolay Aleksandrov continue; 1983*743a53d9SNikolay Aleksandrov if (!br_vlan_global_opts_fill(skb, range_start->vid, 1984*743a53d9SNikolay Aleksandrov range_end->vid, 1985*743a53d9SNikolay Aleksandrov range_start)) { 1986*743a53d9SNikolay Aleksandrov err = -EMSGSIZE; 1987*743a53d9SNikolay Aleksandrov break; 1988*743a53d9SNikolay Aleksandrov } 1989*743a53d9SNikolay Aleksandrov /* advance number of filled vlans */ 1990*743a53d9SNikolay Aleksandrov idx += range_end->vid - range_start->vid + 1; 1991*743a53d9SNikolay Aleksandrov 1992*743a53d9SNikolay Aleksandrov range_start = v; 1993*743a53d9SNikolay Aleksandrov } else if (dump_stats || v->vid == pvid || 199456d09976SNikolay Aleksandrov !br_vlan_can_enter_range(v, range_end)) { 199556d09976SNikolay Aleksandrov u16 vlan_flags = br_vlan_flags(range_start, pvid); 19960ab55879SNikolay Aleksandrov 19970ab55879SNikolay Aleksandrov if (!br_vlan_fill_vids(skb, range_start->vid, 19987a53e718SNikolay Aleksandrov range_end->vid, range_start, 199956d09976SNikolay Aleksandrov vlan_flags, dump_stats)) { 20008dcea187SNikolay Aleksandrov err = -EMSGSIZE; 20018dcea187SNikolay Aleksandrov break; 20028dcea187SNikolay Aleksandrov } 20030ab55879SNikolay Aleksandrov /* advance number of filled vlans */ 20040ab55879SNikolay Aleksandrov idx += range_end->vid - range_start->vid + 1; 20050ab55879SNikolay Aleksandrov 20060ab55879SNikolay Aleksandrov range_start = v; 20078dcea187SNikolay Aleksandrov } 20080ab55879SNikolay Aleksandrov range_end = v; 20090ab55879SNikolay Aleksandrov } 20100ab55879SNikolay Aleksandrov 20110ab55879SNikolay Aleksandrov /* err will be 0 and range_start will be set in 3 cases here: 20120ab55879SNikolay Aleksandrov * - first vlan (range_start == range_end) 20130ab55879SNikolay Aleksandrov * - last vlan (range_start == range_end, not in range) 20140ab55879SNikolay Aleksandrov * - last vlan range (range_start != range_end, in range) 20150ab55879SNikolay Aleksandrov */ 2016*743a53d9SNikolay Aleksandrov if (!err && range_start) { 2017*743a53d9SNikolay Aleksandrov if (dump_global && 2018*743a53d9SNikolay Aleksandrov !br_vlan_global_opts_fill(skb, range_start->vid, 2019*743a53d9SNikolay Aleksandrov range_end->vid, range_start)) 2020*743a53d9SNikolay Aleksandrov err = -EMSGSIZE; 2021*743a53d9SNikolay Aleksandrov else if (!dump_global && 2022*743a53d9SNikolay Aleksandrov !br_vlan_fill_vids(skb, range_start->vid, 2023*743a53d9SNikolay Aleksandrov range_end->vid, range_start, 2024*743a53d9SNikolay Aleksandrov br_vlan_flags(range_start, pvid), 202556d09976SNikolay Aleksandrov dump_stats)) 20260ab55879SNikolay Aleksandrov err = -EMSGSIZE; 2027*743a53d9SNikolay Aleksandrov } 20280ab55879SNikolay Aleksandrov 20290ab55879SNikolay Aleksandrov cb->args[1] = err ? idx : 0; 20300ab55879SNikolay Aleksandrov 20318dcea187SNikolay Aleksandrov nlmsg_end(skb, nlh); 20328dcea187SNikolay Aleksandrov 20338dcea187SNikolay Aleksandrov return err; 20348dcea187SNikolay Aleksandrov } 20358dcea187SNikolay Aleksandrov 203656d09976SNikolay Aleksandrov static const struct nla_policy br_vlan_db_dump_pol[BRIDGE_VLANDB_DUMP_MAX + 1] = { 203756d09976SNikolay Aleksandrov [BRIDGE_VLANDB_DUMP_FLAGS] = { .type = NLA_U32 }, 203856d09976SNikolay Aleksandrov }; 203956d09976SNikolay Aleksandrov 20408dcea187SNikolay Aleksandrov static int br_vlan_rtm_dump(struct sk_buff *skb, struct netlink_callback *cb) 20418dcea187SNikolay Aleksandrov { 204256d09976SNikolay Aleksandrov struct nlattr *dtb[BRIDGE_VLANDB_DUMP_MAX + 1]; 20438dcea187SNikolay Aleksandrov int idx = 0, err = 0, s_idx = cb->args[0]; 20448dcea187SNikolay Aleksandrov struct net *net = sock_net(skb->sk); 20458dcea187SNikolay Aleksandrov struct br_vlan_msg *bvm; 20468dcea187SNikolay Aleksandrov struct net_device *dev; 204756d09976SNikolay Aleksandrov u32 dump_flags = 0; 20488dcea187SNikolay Aleksandrov 204956d09976SNikolay Aleksandrov err = nlmsg_parse(cb->nlh, sizeof(*bvm), dtb, BRIDGE_VLANDB_DUMP_MAX, 205056d09976SNikolay Aleksandrov br_vlan_db_dump_pol, cb->extack); 20518dcea187SNikolay Aleksandrov if (err < 0) 20528dcea187SNikolay Aleksandrov return err; 20538dcea187SNikolay Aleksandrov 20548dcea187SNikolay Aleksandrov bvm = nlmsg_data(cb->nlh); 205556d09976SNikolay Aleksandrov if (dtb[BRIDGE_VLANDB_DUMP_FLAGS]) 205656d09976SNikolay Aleksandrov dump_flags = nla_get_u32(dtb[BRIDGE_VLANDB_DUMP_FLAGS]); 20578dcea187SNikolay Aleksandrov 20588dcea187SNikolay Aleksandrov rcu_read_lock(); 20598dcea187SNikolay Aleksandrov if (bvm->ifindex) { 20608dcea187SNikolay Aleksandrov dev = dev_get_by_index_rcu(net, bvm->ifindex); 20618dcea187SNikolay Aleksandrov if (!dev) { 20628dcea187SNikolay Aleksandrov err = -ENODEV; 20638dcea187SNikolay Aleksandrov goto out_err; 20648dcea187SNikolay Aleksandrov } 206556d09976SNikolay Aleksandrov err = br_vlan_dump_dev(dev, skb, cb, dump_flags); 20668dcea187SNikolay Aleksandrov if (err && err != -EMSGSIZE) 20678dcea187SNikolay Aleksandrov goto out_err; 20688dcea187SNikolay Aleksandrov } else { 20698dcea187SNikolay Aleksandrov for_each_netdev_rcu(net, dev) { 20708dcea187SNikolay Aleksandrov if (idx < s_idx) 20718dcea187SNikolay Aleksandrov goto skip; 20728dcea187SNikolay Aleksandrov 207356d09976SNikolay Aleksandrov err = br_vlan_dump_dev(dev, skb, cb, dump_flags); 20748dcea187SNikolay Aleksandrov if (err == -EMSGSIZE) 20758dcea187SNikolay Aleksandrov break; 20768dcea187SNikolay Aleksandrov skip: 20778dcea187SNikolay Aleksandrov idx++; 20788dcea187SNikolay Aleksandrov } 20798dcea187SNikolay Aleksandrov } 20808dcea187SNikolay Aleksandrov cb->args[0] = idx; 20818dcea187SNikolay Aleksandrov rcu_read_unlock(); 20828dcea187SNikolay Aleksandrov 20838dcea187SNikolay Aleksandrov return skb->len; 20848dcea187SNikolay Aleksandrov 20858dcea187SNikolay Aleksandrov out_err: 20868dcea187SNikolay Aleksandrov rcu_read_unlock(); 20878dcea187SNikolay Aleksandrov 20888dcea187SNikolay Aleksandrov return err; 20898dcea187SNikolay Aleksandrov } 20908dcea187SNikolay Aleksandrov 2091f26b2965SNikolay Aleksandrov static const struct nla_policy br_vlan_db_policy[BRIDGE_VLANDB_ENTRY_MAX + 1] = { 20928140860cSJohannes Berg [BRIDGE_VLANDB_ENTRY_INFO] = 20938140860cSJohannes Berg NLA_POLICY_EXACT_LEN(sizeof(struct bridge_vlan_info)), 20940ab55879SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_RANGE] = { .type = NLA_U16 }, 2095a580c76dSNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_STATE] = { .type = NLA_U8 }, 2096fa388f29SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_TUNNEL_INFO] = { .type = NLA_NESTED }, 2097f26b2965SNikolay Aleksandrov }; 2098f26b2965SNikolay Aleksandrov 2099f26b2965SNikolay Aleksandrov static int br_vlan_rtm_process_one(struct net_device *dev, 2100f26b2965SNikolay Aleksandrov const struct nlattr *attr, 2101f26b2965SNikolay Aleksandrov int cmd, struct netlink_ext_ack *extack) 2102f26b2965SNikolay Aleksandrov { 21030ab55879SNikolay Aleksandrov struct bridge_vlan_info *vinfo, vrange_end, *vinfo_last = NULL; 2104f26b2965SNikolay Aleksandrov struct nlattr *tb[BRIDGE_VLANDB_ENTRY_MAX + 1]; 2105a5d29ae2SNikolay Aleksandrov bool changed = false, skip_processing = false; 2106f26b2965SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2107f26b2965SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2108f26b2965SNikolay Aleksandrov int err = 0, cmdmap = 0; 2109f26b2965SNikolay Aleksandrov struct net_bridge *br; 2110f26b2965SNikolay Aleksandrov 2111f26b2965SNikolay Aleksandrov if (netif_is_bridge_master(dev)) { 2112f26b2965SNikolay Aleksandrov br = netdev_priv(dev); 2113f26b2965SNikolay Aleksandrov vg = br_vlan_group(br); 2114f26b2965SNikolay Aleksandrov } else { 2115f26b2965SNikolay Aleksandrov p = br_port_get_rtnl(dev); 2116f26b2965SNikolay Aleksandrov if (WARN_ON(!p)) 2117f26b2965SNikolay Aleksandrov return -ENODEV; 2118f26b2965SNikolay Aleksandrov br = p->br; 2119f26b2965SNikolay Aleksandrov vg = nbp_vlan_group(p); 2120f26b2965SNikolay Aleksandrov } 2121f26b2965SNikolay Aleksandrov 2122f26b2965SNikolay Aleksandrov if (WARN_ON(!vg)) 2123f26b2965SNikolay Aleksandrov return -ENODEV; 2124f26b2965SNikolay Aleksandrov 2125f26b2965SNikolay Aleksandrov err = nla_parse_nested(tb, BRIDGE_VLANDB_ENTRY_MAX, attr, 2126f26b2965SNikolay Aleksandrov br_vlan_db_policy, extack); 2127f26b2965SNikolay Aleksandrov if (err) 2128f26b2965SNikolay Aleksandrov return err; 2129f26b2965SNikolay Aleksandrov 2130f26b2965SNikolay Aleksandrov if (!tb[BRIDGE_VLANDB_ENTRY_INFO]) { 2131f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry info"); 2132f26b2965SNikolay Aleksandrov return -EINVAL; 2133f26b2965SNikolay Aleksandrov } 21340ab55879SNikolay Aleksandrov memset(&vrange_end, 0, sizeof(vrange_end)); 2135f26b2965SNikolay Aleksandrov 2136f26b2965SNikolay Aleksandrov vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]); 2137f26b2965SNikolay Aleksandrov if (vinfo->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 2138f26b2965SNikolay Aleksandrov BRIDGE_VLAN_INFO_RANGE_END)) { 2139f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "Old-style vlan ranges are not allowed when using RTM vlan calls"); 2140f26b2965SNikolay Aleksandrov return -EINVAL; 2141f26b2965SNikolay Aleksandrov } 2142f26b2965SNikolay Aleksandrov if (!br_vlan_valid_id(vinfo->vid, extack)) 2143f26b2965SNikolay Aleksandrov return -EINVAL; 2144f26b2965SNikolay Aleksandrov 21450ab55879SNikolay Aleksandrov if (tb[BRIDGE_VLANDB_ENTRY_RANGE]) { 21460ab55879SNikolay Aleksandrov vrange_end.vid = nla_get_u16(tb[BRIDGE_VLANDB_ENTRY_RANGE]); 21470ab55879SNikolay Aleksandrov /* validate user-provided flags without RANGE_BEGIN */ 21480ab55879SNikolay Aleksandrov vrange_end.flags = BRIDGE_VLAN_INFO_RANGE_END | vinfo->flags; 21490ab55879SNikolay Aleksandrov vinfo->flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; 21500ab55879SNikolay Aleksandrov 21510ab55879SNikolay Aleksandrov /* vinfo_last is the range start, vinfo the range end */ 21520ab55879SNikolay Aleksandrov vinfo_last = vinfo; 21530ab55879SNikolay Aleksandrov vinfo = &vrange_end; 21540ab55879SNikolay Aleksandrov 21550ab55879SNikolay Aleksandrov if (!br_vlan_valid_id(vinfo->vid, extack) || 21560ab55879SNikolay Aleksandrov !br_vlan_valid_range(vinfo, vinfo_last, extack)) 21570ab55879SNikolay Aleksandrov return -EINVAL; 21580ab55879SNikolay Aleksandrov } 21590ab55879SNikolay Aleksandrov 2160f26b2965SNikolay Aleksandrov switch (cmd) { 2161f26b2965SNikolay Aleksandrov case RTM_NEWVLAN: 2162f26b2965SNikolay Aleksandrov cmdmap = RTM_SETLINK; 2163a5d29ae2SNikolay Aleksandrov skip_processing = !!(vinfo->flags & BRIDGE_VLAN_INFO_ONLY_OPTS); 2164f26b2965SNikolay Aleksandrov break; 2165adb3ce9bSNikolay Aleksandrov case RTM_DELVLAN: 2166adb3ce9bSNikolay Aleksandrov cmdmap = RTM_DELLINK; 2167adb3ce9bSNikolay Aleksandrov break; 2168f26b2965SNikolay Aleksandrov } 2169f26b2965SNikolay Aleksandrov 2170a5d29ae2SNikolay Aleksandrov if (!skip_processing) { 2171a5d29ae2SNikolay Aleksandrov struct bridge_vlan_info *tmp_last = vinfo_last; 2172a5d29ae2SNikolay Aleksandrov 2173a5d29ae2SNikolay Aleksandrov /* br_process_vlan_info may overwrite vinfo_last */ 2174a5d29ae2SNikolay Aleksandrov err = br_process_vlan_info(br, p, cmdmap, vinfo, &tmp_last, 2175a5d29ae2SNikolay Aleksandrov &changed, extack); 2176a5d29ae2SNikolay Aleksandrov 2177a5d29ae2SNikolay Aleksandrov /* notify first if anything changed */ 2178f26b2965SNikolay Aleksandrov if (changed) 2179f26b2965SNikolay Aleksandrov br_ifinfo_notify(cmdmap, br, p); 2180f26b2965SNikolay Aleksandrov 2181a5d29ae2SNikolay Aleksandrov if (err) 2182a5d29ae2SNikolay Aleksandrov return err; 2183a5d29ae2SNikolay Aleksandrov } 2184a5d29ae2SNikolay Aleksandrov 2185a5d29ae2SNikolay Aleksandrov /* deal with options */ 2186a5d29ae2SNikolay Aleksandrov if (cmd == RTM_NEWVLAN) { 2187a5d29ae2SNikolay Aleksandrov struct net_bridge_vlan *range_start, *range_end; 2188a5d29ae2SNikolay Aleksandrov 2189a5d29ae2SNikolay Aleksandrov if (vinfo_last) { 2190a5d29ae2SNikolay Aleksandrov range_start = br_vlan_find(vg, vinfo_last->vid); 2191a5d29ae2SNikolay Aleksandrov range_end = br_vlan_find(vg, vinfo->vid); 2192a5d29ae2SNikolay Aleksandrov } else { 2193a5d29ae2SNikolay Aleksandrov range_start = br_vlan_find(vg, vinfo->vid); 2194a5d29ae2SNikolay Aleksandrov range_end = range_start; 2195a5d29ae2SNikolay Aleksandrov } 2196a5d29ae2SNikolay Aleksandrov 2197a5d29ae2SNikolay Aleksandrov err = br_vlan_process_options(br, p, range_start, range_end, 2198a5d29ae2SNikolay Aleksandrov tb, extack); 2199a5d29ae2SNikolay Aleksandrov } 2200a5d29ae2SNikolay Aleksandrov 2201f26b2965SNikolay Aleksandrov return err; 2202f26b2965SNikolay Aleksandrov } 2203f26b2965SNikolay Aleksandrov 2204f26b2965SNikolay Aleksandrov static int br_vlan_rtm_process(struct sk_buff *skb, struct nlmsghdr *nlh, 2205f26b2965SNikolay Aleksandrov struct netlink_ext_ack *extack) 2206f26b2965SNikolay Aleksandrov { 2207f26b2965SNikolay Aleksandrov struct net *net = sock_net(skb->sk); 2208f26b2965SNikolay Aleksandrov struct br_vlan_msg *bvm; 2209f26b2965SNikolay Aleksandrov struct net_device *dev; 2210f26b2965SNikolay Aleksandrov struct nlattr *attr; 2211f26b2965SNikolay Aleksandrov int err, vlans = 0; 2212f26b2965SNikolay Aleksandrov int rem; 2213f26b2965SNikolay Aleksandrov 2214f26b2965SNikolay Aleksandrov /* this should validate the header and check for remaining bytes */ 2215f26b2965SNikolay Aleksandrov err = nlmsg_parse(nlh, sizeof(*bvm), NULL, BRIDGE_VLANDB_MAX, NULL, 2216f26b2965SNikolay Aleksandrov extack); 2217f26b2965SNikolay Aleksandrov if (err < 0) 2218f26b2965SNikolay Aleksandrov return err; 2219f26b2965SNikolay Aleksandrov 2220f26b2965SNikolay Aleksandrov bvm = nlmsg_data(nlh); 2221f26b2965SNikolay Aleksandrov dev = __dev_get_by_index(net, bvm->ifindex); 2222f26b2965SNikolay Aleksandrov if (!dev) 2223f26b2965SNikolay Aleksandrov return -ENODEV; 2224f26b2965SNikolay Aleksandrov 2225f26b2965SNikolay Aleksandrov if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) { 2226f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "The device is not a valid bridge or bridge port"); 2227f26b2965SNikolay Aleksandrov return -EINVAL; 2228f26b2965SNikolay Aleksandrov } 2229f26b2965SNikolay Aleksandrov 2230f26b2965SNikolay Aleksandrov nlmsg_for_each_attr(attr, nlh, sizeof(*bvm), rem) { 223147ecd2dbSNikolay Aleksandrov switch (nla_type(attr)) { 223247ecd2dbSNikolay Aleksandrov case BRIDGE_VLANDB_ENTRY: 223347ecd2dbSNikolay Aleksandrov err = br_vlan_rtm_process_one(dev, attr, 223447ecd2dbSNikolay Aleksandrov nlh->nlmsg_type, 223547ecd2dbSNikolay Aleksandrov extack); 223647ecd2dbSNikolay Aleksandrov break; 223747ecd2dbSNikolay Aleksandrov case BRIDGE_VLANDB_GLOBAL_OPTIONS: 223847ecd2dbSNikolay Aleksandrov err = br_vlan_rtm_process_global_options(dev, attr, 223947ecd2dbSNikolay Aleksandrov nlh->nlmsg_type, 224047ecd2dbSNikolay Aleksandrov extack); 224147ecd2dbSNikolay Aleksandrov break; 224247ecd2dbSNikolay Aleksandrov default: 2243f26b2965SNikolay Aleksandrov continue; 224447ecd2dbSNikolay Aleksandrov } 2245f26b2965SNikolay Aleksandrov 2246f26b2965SNikolay Aleksandrov vlans++; 2247f26b2965SNikolay Aleksandrov if (err) 2248f26b2965SNikolay Aleksandrov break; 2249f26b2965SNikolay Aleksandrov } 2250f26b2965SNikolay Aleksandrov if (!vlans) { 2251f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "No vlans found to process"); 2252f26b2965SNikolay Aleksandrov err = -EINVAL; 2253f26b2965SNikolay Aleksandrov } 2254f26b2965SNikolay Aleksandrov 2255f26b2965SNikolay Aleksandrov return err; 2256f26b2965SNikolay Aleksandrov } 2257f26b2965SNikolay Aleksandrov 22588dcea187SNikolay Aleksandrov void br_vlan_rtnl_init(void) 22598dcea187SNikolay Aleksandrov { 22608dcea187SNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_GETVLAN, NULL, 22618dcea187SNikolay Aleksandrov br_vlan_rtm_dump, 0); 2262f26b2965SNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_NEWVLAN, 2263f26b2965SNikolay Aleksandrov br_vlan_rtm_process, NULL, 0); 2264adb3ce9bSNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_DELVLAN, 2265adb3ce9bSNikolay Aleksandrov br_vlan_rtm_process, NULL, 0); 22668dcea187SNikolay Aleksandrov } 22678dcea187SNikolay Aleksandrov 22688dcea187SNikolay Aleksandrov void br_vlan_rtnl_uninit(void) 22698dcea187SNikolay Aleksandrov { 22708dcea187SNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_GETVLAN); 2271f26b2965SNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_NEWVLAN); 2272adb3ce9bSNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_DELVLAN); 22738dcea187SNikolay Aleksandrov } 2274