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)) { 296*f6814fdcSVladimir Oltean err = br_fdb_add_local(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 46847211192STobias Waldekranz /* If the skb will be sent using forwarding offload, the assumption is 46947211192STobias Waldekranz * that the switchdev will inject the packet into hardware together 47047211192STobias Waldekranz * with the bridge VLAN, so that it can be forwarded according to that 47147211192STobias Waldekranz * VLAN. The switchdev should deal with popping the VLAN header in 47247211192STobias Waldekranz * hardware on each egress port as appropriate. So only strip the VLAN 47347211192STobias Waldekranz * header if forwarding offload is not being used. 47447211192STobias Waldekranz */ 47547211192STobias Waldekranz if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED && 47647211192STobias Waldekranz !br_switchdev_frame_uses_tx_fwd_offload(skb)) 4775978f8a9SMichał Mirosław __vlan_hwaccel_clear_tag(skb); 47811538d03SRoopa Prabhu 47911538d03SRoopa Prabhu if (p && (p->flags & BR_VLAN_TUNNEL) && 48011538d03SRoopa Prabhu br_handle_egress_vlan_tunnel(skb, v)) { 48111538d03SRoopa Prabhu kfree_skb(skb); 48211538d03SRoopa Prabhu return NULL; 48311538d03SRoopa Prabhu } 48478851988SVlad Yasevich out: 48578851988SVlad Yasevich return skb; 48678851988SVlad Yasevich } 48778851988SVlad Yasevich 48878851988SVlad Yasevich /* Called under RCU */ 4896dada9b1SNikolay Aleksandrov static bool __allowed_ingress(const struct net_bridge *br, 4906dada9b1SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 491a580c76dSNikolay Aleksandrov struct sk_buff *skb, u16 *vid, 492f4b7002aSNikolay Aleksandrov u8 *state, 493f4b7002aSNikolay Aleksandrov struct net_bridge_vlan **vlan) 49478851988SVlad Yasevich { 495281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats; 4966dada9b1SNikolay Aleksandrov struct net_bridge_vlan *v; 4978580e211SToshiaki Makita bool tagged; 498a37b85c9SVlad Yasevich 49920adfa1aSVlad Yasevich BR_INPUT_SKB_CB(skb)->vlan_filtered = true; 50012464bb8SToshiaki Makita /* If vlan tx offload is disabled on bridge device and frame was 50112464bb8SToshiaki Makita * sent from vlan device on the bridge device, it does not have 50212464bb8SToshiaki Makita * HW accelerated vlan tag. 50312464bb8SToshiaki Makita */ 504df8a39deSJiri Pirko if (unlikely(!skb_vlan_tag_present(skb) && 5056dada9b1SNikolay Aleksandrov skb->protocol == br->vlan_proto)) { 5060d5501c1SVlad Yasevich skb = skb_vlan_untag(skb); 50712464bb8SToshiaki Makita if (unlikely(!skb)) 50812464bb8SToshiaki Makita return false; 50912464bb8SToshiaki Makita } 51012464bb8SToshiaki Makita 5118580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid)) { 5128580e211SToshiaki Makita /* Tagged frame */ 5136dada9b1SNikolay Aleksandrov if (skb->vlan_proto != br->vlan_proto) { 5148580e211SToshiaki Makita /* Protocol-mismatch, empty out vlan_tci for new tag */ 5158580e211SToshiaki Makita skb_push(skb, ETH_HLEN); 51662749e2cSJiri Pirko skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, 517df8a39deSJiri Pirko skb_vlan_tag_get(skb)); 5188580e211SToshiaki Makita if (unlikely(!skb)) 5198580e211SToshiaki Makita return false; 5208580e211SToshiaki Makita 5218580e211SToshiaki Makita skb_pull(skb, ETH_HLEN); 5228580e211SToshiaki Makita skb_reset_mac_len(skb); 5238580e211SToshiaki Makita *vid = 0; 5248580e211SToshiaki Makita tagged = false; 5258580e211SToshiaki Makita } else { 5268580e211SToshiaki Makita tagged = true; 5278580e211SToshiaki Makita } 5288580e211SToshiaki Makita } else { 5298580e211SToshiaki Makita /* Untagged frame */ 5308580e211SToshiaki Makita tagged = false; 5318580e211SToshiaki Makita } 5328580e211SToshiaki Makita 533b90356ceSToshiaki Makita if (!*vid) { 53477751ee8SNikolay Aleksandrov u16 pvid = br_get_pvid(vg); 53577751ee8SNikolay Aleksandrov 536b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 537b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 538b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 53978851988SVlad Yasevich */ 5403df6bf45SVlad Yasevich if (!pvid) 541eb707618SToshiaki Makita goto drop; 54278851988SVlad Yasevich 543b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 544b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 54578851988SVlad Yasevich */ 546dfb5fa32SToshiaki Makita *vid = pvid; 5478580e211SToshiaki Makita if (likely(!tagged)) 548b90356ceSToshiaki Makita /* Untagged Frame. */ 5496dada9b1SNikolay Aleksandrov __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); 550b90356ceSToshiaki Makita else 551b90356ceSToshiaki Makita /* Priority-tagged Frame. 5525978f8a9SMichał Mirosław * At this point, we know that skb->vlan_tci VID 5535978f8a9SMichał Mirosław * field was 0. 554b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 555b90356ceSToshiaki Makita */ 556b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 557b90356ceSToshiaki Makita 558f4b7002aSNikolay Aleksandrov /* if snooping and stats are disabled we can avoid the lookup */ 559f4b7002aSNikolay Aleksandrov if (!br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED) && 560f4b7002aSNikolay Aleksandrov !br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 561a580c76dSNikolay Aleksandrov if (*state == BR_STATE_FORWARDING) { 562a580c76dSNikolay Aleksandrov *state = br_vlan_get_pvid_state(vg); 563a580c76dSNikolay Aleksandrov return br_vlan_state_allowed(*state, true); 564a580c76dSNikolay Aleksandrov } else { 56578851988SVlad Yasevich return true; 56678851988SVlad Yasevich } 567a580c76dSNikolay Aleksandrov } 568a580c76dSNikolay Aleksandrov } 56977751ee8SNikolay Aleksandrov v = br_vlan_find(vg, *vid); 5706dada9b1SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 5716dada9b1SNikolay Aleksandrov goto drop; 5726dada9b1SNikolay Aleksandrov 573a580c76dSNikolay Aleksandrov if (*state == BR_STATE_FORWARDING) { 574a580c76dSNikolay Aleksandrov *state = br_vlan_get_state(v); 575a580c76dSNikolay Aleksandrov if (!br_vlan_state_allowed(*state, true)) 576a580c76dSNikolay Aleksandrov goto drop; 577a580c76dSNikolay Aleksandrov } 578a580c76dSNikolay Aleksandrov 579ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 5806dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 5816dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 5826dada9b1SNikolay Aleksandrov stats->rx_bytes += skb->len; 5836dada9b1SNikolay Aleksandrov stats->rx_packets++; 5846dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 5856dada9b1SNikolay Aleksandrov } 5866dada9b1SNikolay Aleksandrov 587f4b7002aSNikolay Aleksandrov *vlan = v; 588f4b7002aSNikolay Aleksandrov 589a37b85c9SVlad Yasevich return true; 5906dada9b1SNikolay Aleksandrov 591eb707618SToshiaki Makita drop: 592eb707618SToshiaki Makita kfree_skb(skb); 593a37b85c9SVlad Yasevich return false; 594a37b85c9SVlad Yasevich } 595a37b85c9SVlad Yasevich 59677751ee8SNikolay Aleksandrov bool br_allowed_ingress(const struct net_bridge *br, 59777751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg, struct sk_buff *skb, 598f4b7002aSNikolay Aleksandrov u16 *vid, u8 *state, 599f4b7002aSNikolay Aleksandrov struct net_bridge_vlan **vlan) 6002594e906SNikolay Aleksandrov { 6012594e906SNikolay Aleksandrov /* If VLAN filtering is disabled on the bridge, all packets are 6022594e906SNikolay Aleksandrov * permitted. 6032594e906SNikolay Aleksandrov */ 604f4b7002aSNikolay Aleksandrov *vlan = NULL; 605ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) { 6062594e906SNikolay Aleksandrov BR_INPUT_SKB_CB(skb)->vlan_filtered = false; 6072594e906SNikolay Aleksandrov return true; 6082594e906SNikolay Aleksandrov } 6092594e906SNikolay Aleksandrov 610f4b7002aSNikolay Aleksandrov return __allowed_ingress(br, vg, skb, vid, state, vlan); 6112594e906SNikolay Aleksandrov } 6122594e906SNikolay Aleksandrov 61385f46c6bSVlad Yasevich /* Called under RCU. */ 6142594e906SNikolay Aleksandrov bool br_allowed_egress(struct net_bridge_vlan_group *vg, 61585f46c6bSVlad Yasevich const struct sk_buff *skb) 61685f46c6bSVlad Yasevich { 6172594e906SNikolay Aleksandrov const struct net_bridge_vlan *v; 61885f46c6bSVlad Yasevich u16 vid; 61985f46c6bSVlad Yasevich 62020adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 62120adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 62285f46c6bSVlad Yasevich return true; 62385f46c6bSVlad Yasevich 62485f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 6252594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 626a580c76dSNikolay Aleksandrov if (v && br_vlan_should_use(v) && 627a580c76dSNikolay Aleksandrov br_vlan_state_allowed(br_vlan_get_state(v), false)) 62885f46c6bSVlad Yasevich return true; 62985f46c6bSVlad Yasevich 63085f46c6bSVlad Yasevich return false; 63185f46c6bSVlad Yasevich } 63285f46c6bSVlad Yasevich 633e0d7968aSToshiaki Makita /* Called under RCU */ 634e0d7968aSToshiaki Makita bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) 635e0d7968aSToshiaki Makita { 636468e7944SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 637e0d7968aSToshiaki Makita struct net_bridge *br = p->br; 638a580c76dSNikolay Aleksandrov struct net_bridge_vlan *v; 639e0d7968aSToshiaki Makita 64020adfa1aSVlad Yasevich /* If filtering was disabled at input, let it pass. */ 641ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 642e0d7968aSToshiaki Makita return true; 643e0d7968aSToshiaki Makita 644eca1e006SIdo Schimmel vg = nbp_vlan_group_rcu(p); 645468e7944SNikolay Aleksandrov if (!vg || !vg->num_vlans) 646e0d7968aSToshiaki Makita return false; 647e0d7968aSToshiaki Makita 6488580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) 6498580e211SToshiaki Makita *vid = 0; 6508580e211SToshiaki Makita 651e0d7968aSToshiaki Makita if (!*vid) { 65277751ee8SNikolay Aleksandrov *vid = br_get_pvid(vg); 653a580c76dSNikolay Aleksandrov if (!*vid || 654a580c76dSNikolay Aleksandrov !br_vlan_state_allowed(br_vlan_get_pvid_state(vg), true)) 655e0d7968aSToshiaki Makita return false; 656e0d7968aSToshiaki Makita 657e0d7968aSToshiaki Makita return true; 658e0d7968aSToshiaki Makita } 659e0d7968aSToshiaki Makita 660a580c76dSNikolay Aleksandrov v = br_vlan_find(vg, *vid); 661a580c76dSNikolay Aleksandrov if (v && br_vlan_state_allowed(br_vlan_get_state(v), true)) 662e0d7968aSToshiaki Makita return true; 663e0d7968aSToshiaki Makita 664e0d7968aSToshiaki Makita return false; 665e0d7968aSToshiaki Makita } 666e0d7968aSToshiaki Makita 667dbd6dc75SPetr Machata static int br_vlan_add_existing(struct net_bridge *br, 668dbd6dc75SPetr Machata struct net_bridge_vlan_group *vg, 669dbd6dc75SPetr Machata struct net_bridge_vlan *vlan, 670169327d5SPetr Machata u16 flags, bool *changed, 671169327d5SPetr Machata struct netlink_ext_ack *extack) 672dbd6dc75SPetr Machata { 673dbd6dc75SPetr Machata int err; 674dbd6dc75SPetr Machata 675169327d5SPetr Machata err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags, extack); 6769c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 6779c86ce2cSPetr Machata return err; 6789c86ce2cSPetr Machata 679dbd6dc75SPetr Machata if (!br_vlan_is_brentry(vlan)) { 680dbd6dc75SPetr Machata /* Trying to change flags of non-existent bridge vlan */ 6819c86ce2cSPetr Machata if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) { 6829c86ce2cSPetr Machata err = -EINVAL; 6839c86ce2cSPetr Machata goto err_flags; 6849c86ce2cSPetr Machata } 685dbd6dc75SPetr Machata /* It was only kept for port vlans, now make it real */ 686*f6814fdcSVladimir Oltean err = br_fdb_add_local(br, NULL, br->dev->dev_addr, vlan->vid); 687dbd6dc75SPetr Machata if (err) { 688dbd6dc75SPetr Machata br_err(br, "failed to insert local address into bridge forwarding table\n"); 6899c86ce2cSPetr Machata goto err_fdb_insert; 690dbd6dc75SPetr Machata } 691dbd6dc75SPetr Machata 692dbd6dc75SPetr Machata refcount_inc(&vlan->refcnt); 693dbd6dc75SPetr Machata vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; 694dbd6dc75SPetr Machata vg->num_vlans++; 695dbd6dc75SPetr Machata *changed = true; 696b92dace3SNikolay Aleksandrov br_multicast_toggle_one_vlan(vlan, true); 697dbd6dc75SPetr Machata } 698dbd6dc75SPetr Machata 699dbd6dc75SPetr Machata if (__vlan_add_flags(vlan, flags)) 700dbd6dc75SPetr Machata *changed = true; 701dbd6dc75SPetr Machata 702dbd6dc75SPetr Machata return 0; 7039c86ce2cSPetr Machata 7049c86ce2cSPetr Machata err_fdb_insert: 7059c86ce2cSPetr Machata err_flags: 7069c86ce2cSPetr Machata br_switchdev_port_vlan_del(br->dev, vlan->vid); 7079c86ce2cSPetr Machata return err; 708dbd6dc75SPetr Machata } 709dbd6dc75SPetr Machata 7108adff41cSToshiaki Makita /* Must be protected by RTNL. 7118adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 712f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 7138adff41cSToshiaki Makita */ 714169327d5SPetr Machata int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed, 715169327d5SPetr Machata struct netlink_ext_ack *extack) 716243a2e63SVlad Yasevich { 717907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 7182594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 7192594e906SNikolay Aleksandrov int ret; 720243a2e63SVlad Yasevich 721243a2e63SVlad Yasevich ASSERT_RTNL(); 722243a2e63SVlad Yasevich 723f418af63SNikolay Aleksandrov *changed = false; 724907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 725907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(vg, vid); 726dbd6dc75SPetr Machata if (vlan) 727169327d5SPetr Machata return br_vlan_add_existing(br, vg, vlan, flags, changed, 728169327d5SPetr Machata extack); 729243a2e63SVlad Yasevich 7302594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 7312594e906SNikolay Aleksandrov if (!vlan) 732243a2e63SVlad Yasevich return -ENOMEM; 733243a2e63SVlad Yasevich 734281cc284SHeiner Kallweit vlan->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 7356dada9b1SNikolay Aleksandrov if (!vlan->stats) { 7366dada9b1SNikolay Aleksandrov kfree(vlan); 7376dada9b1SNikolay Aleksandrov return -ENOMEM; 7386dada9b1SNikolay Aleksandrov } 7392594e906SNikolay Aleksandrov vlan->vid = vid; 7402594e906SNikolay Aleksandrov vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; 7412594e906SNikolay Aleksandrov vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; 7422594e906SNikolay Aleksandrov vlan->br = br; 7432594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_BRENTRY) 74425127759SReshetova, Elena refcount_set(&vlan->refcnt, 1); 745169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 7466dada9b1SNikolay Aleksandrov if (ret) { 7476dada9b1SNikolay Aleksandrov free_percpu(vlan->stats); 7482594e906SNikolay Aleksandrov kfree(vlan); 749f418af63SNikolay Aleksandrov } else { 750f418af63SNikolay Aleksandrov *changed = true; 7516dada9b1SNikolay Aleksandrov } 752243a2e63SVlad Yasevich 7532594e906SNikolay Aleksandrov return ret; 754243a2e63SVlad Yasevich } 755243a2e63SVlad Yasevich 7568adff41cSToshiaki Makita /* Must be protected by RTNL. 7578adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 7588adff41cSToshiaki Makita */ 759243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 760243a2e63SVlad Yasevich { 761907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 7622594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 763243a2e63SVlad Yasevich 764243a2e63SVlad Yasevich ASSERT_RTNL(); 765243a2e63SVlad Yasevich 766907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 767907b1e6eSNikolay Aleksandrov v = br_vlan_find(vg, vid); 7682594e906SNikolay Aleksandrov if (!v || !br_vlan_is_brentry(v)) 7692594e906SNikolay Aleksandrov return -ENOENT; 770243a2e63SVlad Yasevich 771424bb9c9SToshiaki Makita br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); 7723741873bSRoopa Prabhu br_fdb_delete_by_port(br, NULL, vid, 0); 773bc9a25d2SVlad Yasevich 774efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 775efa5356bSRoopa Prabhu 7762594e906SNikolay Aleksandrov return __vlan_del(v); 777243a2e63SVlad Yasevich } 778243a2e63SVlad Yasevich 779243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 780243a2e63SVlad Yasevich { 781f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 782f409d0edSNikolay Aleksandrov 783243a2e63SVlad Yasevich ASSERT_RTNL(); 784243a2e63SVlad Yasevich 785f409d0edSNikolay Aleksandrov vg = br_vlan_group(br); 786f545923bSNikolay Aleksandrov __vlan_flush(br, NULL, vg); 787f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(br->vlgrp, NULL); 788f409d0edSNikolay Aleksandrov synchronize_rcu(); 789f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 790243a2e63SVlad Yasevich } 791243a2e63SVlad Yasevich 7922594e906SNikolay Aleksandrov struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) 7932b292fb4SToshiaki Makita { 7942594e906SNikolay Aleksandrov if (!vg) 7952594e906SNikolay Aleksandrov return NULL; 7962b292fb4SToshiaki Makita 7972594e906SNikolay Aleksandrov return br_vlan_lookup(&vg->vlan_hash, vid); 7982b292fb4SToshiaki Makita } 7992b292fb4SToshiaki Makita 800204177f3SToshiaki Makita /* Must be protected by RTNL. */ 801204177f3SToshiaki Makita static void recalculate_group_addr(struct net_bridge *br) 802204177f3SToshiaki Makita { 803be3664a0SNikolay Aleksandrov if (br_opt_get(br, BROPT_GROUP_ADDR_SET)) 804204177f3SToshiaki Makita return; 805204177f3SToshiaki Makita 806204177f3SToshiaki Makita spin_lock_bh(&br->lock); 807ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 808ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) { 809204177f3SToshiaki Makita /* Bridge Group Address */ 810204177f3SToshiaki Makita br->group_addr[5] = 0x00; 811204177f3SToshiaki Makita } else { /* vlan_enabled && ETH_P_8021AD */ 812204177f3SToshiaki Makita /* Provider Bridge Group Address */ 813204177f3SToshiaki Makita br->group_addr[5] = 0x08; 814204177f3SToshiaki Makita } 815204177f3SToshiaki Makita spin_unlock_bh(&br->lock); 816204177f3SToshiaki Makita } 817204177f3SToshiaki Makita 818204177f3SToshiaki Makita /* Must be protected by RTNL. */ 819204177f3SToshiaki Makita void br_recalculate_fwd_mask(struct net_bridge *br) 820204177f3SToshiaki Makita { 821ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 822ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) 823204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; 824204177f3SToshiaki Makita else /* vlan_enabled && ETH_P_8021AD */ 825204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_8021AD & 826204177f3SToshiaki Makita ~(1u << br->group_addr[5]); 827204177f3SToshiaki Makita } 828204177f3SToshiaki Makita 8299e781401SVladimir Oltean int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val, 8309e781401SVladimir Oltean struct netlink_ext_ack *extack) 831243a2e63SVlad Yasevich { 8326b72a770SElad Raz struct switchdev_attr attr = { 8336b72a770SElad Raz .orig_dev = br->dev, 8346b72a770SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 8356b72a770SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 8366b72a770SElad Raz .u.vlan_filtering = val, 8376b72a770SElad Raz }; 8386b72a770SElad Raz int err; 8396b72a770SElad Raz 840ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED) == !!val) 841a7854037SNikolay Aleksandrov return 0; 842243a2e63SVlad Yasevich 843ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_ENABLED, !!val); 844f7cdb3ecSVladimir Oltean 845f7cdb3ecSVladimir Oltean err = switchdev_port_attr_set(br->dev, &attr, extack); 846f7cdb3ecSVladimir Oltean if (err && err != -EOPNOTSUPP) { 847f7cdb3ecSVladimir Oltean br_opt_toggle(br, BROPT_VLAN_ENABLED, !val); 848f7cdb3ecSVladimir Oltean return err; 849f7cdb3ecSVladimir Oltean } 850f7cdb3ecSVladimir Oltean 8512796d0c6SVlad Yasevich br_manage_promisc(br); 852204177f3SToshiaki Makita recalculate_group_addr(br); 853204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 854f4b7002aSNikolay Aleksandrov if (!val && br_opt_get(br, BROPT_MCAST_VLAN_SNOOPING_ENABLED)) { 855f4b7002aSNikolay Aleksandrov br_info(br, "vlan filtering disabled, automatically disabling multicast vlan snooping\n"); 856f4b7002aSNikolay Aleksandrov br_multicast_toggle_vlan_snooping(br, false, NULL); 857f4b7002aSNikolay Aleksandrov } 858243a2e63SVlad Yasevich 859a7854037SNikolay Aleksandrov return 0; 860a7854037SNikolay Aleksandrov } 861a7854037SNikolay Aleksandrov 8621f51445aSIdo Schimmel bool br_vlan_enabled(const struct net_device *dev) 8631f51445aSIdo Schimmel { 8641f51445aSIdo Schimmel struct net_bridge *br = netdev_priv(dev); 8651f51445aSIdo Schimmel 866ae75767eSNikolay Aleksandrov return br_opt_get(br, BROPT_VLAN_ENABLED); 8671f51445aSIdo Schimmel } 8681f51445aSIdo Schimmel EXPORT_SYMBOL_GPL(br_vlan_enabled); 8691f51445aSIdo Schimmel 87031aed46fSwenxu int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 87131aed46fSwenxu { 87231aed46fSwenxu struct net_bridge *br = netdev_priv(dev); 87331aed46fSwenxu 87431aed46fSwenxu *p_proto = ntohs(br->vlan_proto); 87531aed46fSwenxu 87631aed46fSwenxu return 0; 87731aed46fSwenxu } 87831aed46fSwenxu EXPORT_SYMBOL_GPL(br_vlan_get_proto); 87931aed46fSwenxu 880dcbdf135SVladimir Oltean int __br_vlan_set_proto(struct net_bridge *br, __be16 proto, 881dcbdf135SVladimir Oltean struct netlink_ext_ack *extack) 882204177f3SToshiaki Makita { 88322ec19f3SDanielle Ratson struct switchdev_attr attr = { 88422ec19f3SDanielle Ratson .orig_dev = br->dev, 88522ec19f3SDanielle Ratson .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL, 88622ec19f3SDanielle Ratson .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 88722ec19f3SDanielle Ratson .u.vlan_protocol = ntohs(proto), 88822ec19f3SDanielle Ratson }; 889204177f3SToshiaki Makita int err = 0; 890204177f3SToshiaki Makita struct net_bridge_port *p; 8912594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 892907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 89322ec19f3SDanielle Ratson __be16 oldproto = br->vlan_proto; 894204177f3SToshiaki Makita 895204177f3SToshiaki Makita if (br->vlan_proto == proto) 896d2d427b3SToshiaki Makita return 0; 897204177f3SToshiaki Makita 898dcbdf135SVladimir Oltean err = switchdev_port_attr_set(br->dev, &attr, extack); 89922ec19f3SDanielle Ratson if (err && err != -EOPNOTSUPP) 90022ec19f3SDanielle Ratson return err; 90122ec19f3SDanielle Ratson 902204177f3SToshiaki Makita /* Add VLANs for the new proto to the device filter. */ 903204177f3SToshiaki Makita list_for_each_entry(p, &br->port_list, list) { 904907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 905907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) { 9062594e906SNikolay Aleksandrov err = vlan_vid_add(p->dev, proto, vlan->vid); 907204177f3SToshiaki Makita if (err) 908204177f3SToshiaki Makita goto err_filt; 909204177f3SToshiaki Makita } 910204177f3SToshiaki Makita } 911204177f3SToshiaki Makita 912204177f3SToshiaki Makita br->vlan_proto = proto; 913204177f3SToshiaki Makita 914204177f3SToshiaki Makita recalculate_group_addr(br); 915204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 916204177f3SToshiaki Makita 917204177f3SToshiaki Makita /* Delete VLANs for the old proto from the device filter. */ 918907b1e6eSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 919907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 920907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 9212594e906SNikolay Aleksandrov vlan_vid_del(p->dev, oldproto, vlan->vid); 922907b1e6eSNikolay Aleksandrov } 923204177f3SToshiaki Makita 924d2d427b3SToshiaki Makita return 0; 925204177f3SToshiaki Makita 926204177f3SToshiaki Makita err_filt: 92722ec19f3SDanielle Ratson attr.u.vlan_protocol = ntohs(oldproto); 928dcbdf135SVladimir Oltean switchdev_port_attr_set(br->dev, &attr, NULL); 92922ec19f3SDanielle Ratson 930907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) 9312594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 932204177f3SToshiaki Makita 933907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(p, &br->port_list, list) { 934907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 935907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 9362594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 937907b1e6eSNikolay Aleksandrov } 938204177f3SToshiaki Makita 939d2d427b3SToshiaki Makita return err; 940d2d427b3SToshiaki Makita } 941d2d427b3SToshiaki Makita 9429e781401SVladimir Oltean int br_vlan_set_proto(struct net_bridge *br, unsigned long val, 9439e781401SVladimir Oltean struct netlink_ext_ack *extack) 944d2d427b3SToshiaki Makita { 945a98c0c47SMenglong Dong if (!eth_type_vlan(htons(val))) 946d2d427b3SToshiaki Makita return -EPROTONOSUPPORT; 947d2d427b3SToshiaki Makita 948dcbdf135SVladimir Oltean return __br_vlan_set_proto(br, htons(val), extack); 949204177f3SToshiaki Makita } 950204177f3SToshiaki Makita 9516dada9b1SNikolay Aleksandrov int br_vlan_set_stats(struct net_bridge *br, unsigned long val) 9526dada9b1SNikolay Aleksandrov { 9536dada9b1SNikolay Aleksandrov switch (val) { 9546dada9b1SNikolay Aleksandrov case 0: 9556dada9b1SNikolay Aleksandrov case 1: 956ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_ENABLED, !!val); 9576dada9b1SNikolay Aleksandrov break; 9586dada9b1SNikolay Aleksandrov default: 9596dada9b1SNikolay Aleksandrov return -EINVAL; 9606dada9b1SNikolay Aleksandrov } 9616dada9b1SNikolay Aleksandrov 9626dada9b1SNikolay Aleksandrov return 0; 9636dada9b1SNikolay Aleksandrov } 9646dada9b1SNikolay Aleksandrov 9659163a0fcSNikolay Aleksandrov int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val) 9669163a0fcSNikolay Aleksandrov { 9679163a0fcSNikolay Aleksandrov struct net_bridge_port *p; 9689163a0fcSNikolay Aleksandrov 9699163a0fcSNikolay Aleksandrov /* allow to change the option if there are no port vlans configured */ 9709163a0fcSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 9719163a0fcSNikolay Aleksandrov struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 9729163a0fcSNikolay Aleksandrov 9739163a0fcSNikolay Aleksandrov if (vg->num_vlans) 9749163a0fcSNikolay Aleksandrov return -EBUSY; 9759163a0fcSNikolay Aleksandrov } 9769163a0fcSNikolay Aleksandrov 9779163a0fcSNikolay Aleksandrov switch (val) { 9789163a0fcSNikolay Aleksandrov case 0: 9799163a0fcSNikolay Aleksandrov case 1: 9809163a0fcSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_PER_PORT, !!val); 9819163a0fcSNikolay Aleksandrov break; 9829163a0fcSNikolay Aleksandrov default: 9839163a0fcSNikolay Aleksandrov return -EINVAL; 9849163a0fcSNikolay Aleksandrov } 9859163a0fcSNikolay Aleksandrov 9869163a0fcSNikolay Aleksandrov return 0; 9879163a0fcSNikolay Aleksandrov } 9889163a0fcSNikolay Aleksandrov 98977751ee8SNikolay Aleksandrov static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) 9905be5a2dfSVlad Yasevich { 9912594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 9922594e906SNikolay Aleksandrov 99377751ee8SNikolay Aleksandrov if (vid != vg->pvid) 9942594e906SNikolay Aleksandrov return false; 9952594e906SNikolay Aleksandrov 9962594e906SNikolay Aleksandrov v = br_vlan_lookup(&vg->vlan_hash, vid); 9972594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v) && 9982594e906SNikolay Aleksandrov (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 9992594e906SNikolay Aleksandrov return true; 10002594e906SNikolay Aleksandrov 10012594e906SNikolay Aleksandrov return false; 10025be5a2dfSVlad Yasevich } 10035be5a2dfSVlad Yasevich 10045be5a2dfSVlad Yasevich static void br_vlan_disable_default_pvid(struct net_bridge *br) 10055be5a2dfSVlad Yasevich { 10065be5a2dfSVlad Yasevich struct net_bridge_port *p; 10075be5a2dfSVlad Yasevich u16 pvid = br->default_pvid; 10085be5a2dfSVlad Yasevich 10095be5a2dfSVlad Yasevich /* Disable default_pvid on all ports where it is still 10105be5a2dfSVlad Yasevich * configured. 10115be5a2dfSVlad Yasevich */ 1012f545923bSNikolay Aleksandrov if (vlan_default_pvid(br_vlan_group(br), pvid)) { 1013f545923bSNikolay Aleksandrov if (!br_vlan_delete(br, pvid)) 1014f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); 1015f545923bSNikolay Aleksandrov } 10165be5a2dfSVlad Yasevich 10175be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 1018f545923bSNikolay Aleksandrov if (vlan_default_pvid(nbp_vlan_group(p), pvid) && 1019f545923bSNikolay Aleksandrov !nbp_vlan_delete(p, pvid)) 1020f545923bSNikolay Aleksandrov br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); 10215be5a2dfSVlad Yasevich } 10225be5a2dfSVlad Yasevich 10235be5a2dfSVlad Yasevich br->default_pvid = 0; 10245be5a2dfSVlad Yasevich } 10255be5a2dfSVlad Yasevich 1026169327d5SPetr Machata int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 1027169327d5SPetr Machata struct netlink_ext_ack *extack) 10285be5a2dfSVlad Yasevich { 10292594e906SNikolay Aleksandrov const struct net_bridge_vlan *pvent; 1030907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 10315be5a2dfSVlad Yasevich struct net_bridge_port *p; 1032f418af63SNikolay Aleksandrov unsigned long *changed; 1033f418af63SNikolay Aleksandrov bool vlchange; 10345be5a2dfSVlad Yasevich u16 old_pvid; 10355be5a2dfSVlad Yasevich int err = 0; 10365be5a2dfSVlad Yasevich 10370f963b75SNikolay Aleksandrov if (!pvid) { 10380f963b75SNikolay Aleksandrov br_vlan_disable_default_pvid(br); 10390f963b75SNikolay Aleksandrov return 0; 10400f963b75SNikolay Aleksandrov } 10410f963b75SNikolay Aleksandrov 1042459479daSAndy Shevchenko changed = bitmap_zalloc(BR_MAX_PORTS, GFP_KERNEL); 10435be5a2dfSVlad Yasevich if (!changed) 10445be5a2dfSVlad Yasevich return -ENOMEM; 10455be5a2dfSVlad Yasevich 10465be5a2dfSVlad Yasevich old_pvid = br->default_pvid; 10475be5a2dfSVlad Yasevich 10485be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 10495be5a2dfSVlad Yasevich * user configuration. 10505be5a2dfSVlad Yasevich */ 1051907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 1052907b1e6eSNikolay Aleksandrov pvent = br_vlan_find(vg, pvid); 1053907b1e6eSNikolay Aleksandrov if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && 10542594e906SNikolay Aleksandrov (!pvent || !br_vlan_should_use(pvent))) { 10555be5a2dfSVlad Yasevich err = br_vlan_add(br, pvid, 10565be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 10572594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1058f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1059169327d5SPetr Machata &vlchange, extack); 10605be5a2dfSVlad Yasevich if (err) 10615be5a2dfSVlad Yasevich goto out; 1062f545923bSNikolay Aleksandrov 1063f545923bSNikolay Aleksandrov if (br_vlan_delete(br, old_pvid)) 1064f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, old_pvid, 0, RTM_DELVLAN); 1065f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_NEWVLAN); 10665be5a2dfSVlad Yasevich set_bit(0, changed); 10675be5a2dfSVlad Yasevich } 10685be5a2dfSVlad Yasevich 10695be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 10705be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 10715be5a2dfSVlad Yasevich * user configuration. 10725be5a2dfSVlad Yasevich */ 1073907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 10745be5a2dfSVlad Yasevich if ((old_pvid && 1075907b1e6eSNikolay Aleksandrov !vlan_default_pvid(vg, old_pvid)) || 1076907b1e6eSNikolay Aleksandrov br_vlan_find(vg, pvid)) 10775be5a2dfSVlad Yasevich continue; 10785be5a2dfSVlad Yasevich 10795be5a2dfSVlad Yasevich err = nbp_vlan_add(p, pvid, 10805be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 1081f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1082169327d5SPetr Machata &vlchange, extack); 10835be5a2dfSVlad Yasevich if (err) 10845be5a2dfSVlad Yasevich goto err_port; 1085f545923bSNikolay Aleksandrov if (nbp_vlan_delete(p, old_pvid)) 1086f545923bSNikolay Aleksandrov br_vlan_notify(br, p, old_pvid, 0, RTM_DELVLAN); 1087f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, pvid, 0, RTM_NEWVLAN); 10885be5a2dfSVlad Yasevich set_bit(p->port_no, changed); 10895be5a2dfSVlad Yasevich } 10905be5a2dfSVlad Yasevich 10915be5a2dfSVlad Yasevich br->default_pvid = pvid; 10925be5a2dfSVlad Yasevich 10935be5a2dfSVlad Yasevich out: 1094459479daSAndy Shevchenko bitmap_free(changed); 10955be5a2dfSVlad Yasevich return err; 10965be5a2dfSVlad Yasevich 10975be5a2dfSVlad Yasevich err_port: 10985be5a2dfSVlad Yasevich list_for_each_entry_continue_reverse(p, &br->port_list, list) { 10995be5a2dfSVlad Yasevich if (!test_bit(p->port_no, changed)) 11005be5a2dfSVlad Yasevich continue; 11015be5a2dfSVlad Yasevich 1102f545923bSNikolay Aleksandrov if (old_pvid) { 11035be5a2dfSVlad Yasevich nbp_vlan_add(p, old_pvid, 11045be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 1105f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1106169327d5SPetr Machata &vlchange, NULL); 1107f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, old_pvid, 0, RTM_NEWVLAN); 1108f545923bSNikolay Aleksandrov } 11095be5a2dfSVlad Yasevich nbp_vlan_delete(p, pvid); 1110f545923bSNikolay Aleksandrov br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN); 11115be5a2dfSVlad Yasevich } 11125be5a2dfSVlad Yasevich 11135be5a2dfSVlad Yasevich if (test_bit(0, changed)) { 1114f545923bSNikolay Aleksandrov if (old_pvid) { 11155be5a2dfSVlad Yasevich br_vlan_add(br, old_pvid, 11165be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 11172594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1118f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1119169327d5SPetr Machata &vlchange, NULL); 1120f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, old_pvid, 0, RTM_NEWVLAN); 1121f545923bSNikolay Aleksandrov } 11225be5a2dfSVlad Yasevich br_vlan_delete(br, pvid); 1123f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN); 11245be5a2dfSVlad Yasevich } 11255be5a2dfSVlad Yasevich goto out; 11265be5a2dfSVlad Yasevich } 11275be5a2dfSVlad Yasevich 11289e781401SVladimir Oltean int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val, 11299e781401SVladimir Oltean struct netlink_ext_ack *extack) 113096a20d9dSVlad Yasevich { 113196a20d9dSVlad Yasevich u16 pvid = val; 113296a20d9dSVlad Yasevich int err = 0; 113396a20d9dSVlad Yasevich 11345be5a2dfSVlad Yasevich if (val >= VLAN_VID_MASK) 113596a20d9dSVlad Yasevich return -EINVAL; 113696a20d9dSVlad Yasevich 113796a20d9dSVlad Yasevich if (pvid == br->default_pvid) 1138047831a9SXin Long goto out; 113996a20d9dSVlad Yasevich 114096a20d9dSVlad Yasevich /* Only allow default pvid change when filtering is disabled */ 1141ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED)) { 114296a20d9dSVlad Yasevich pr_info_once("Please disable vlan filtering to change default_pvid\n"); 114396a20d9dSVlad Yasevich err = -EPERM; 1144047831a9SXin Long goto out; 114596a20d9dSVlad Yasevich } 11469e781401SVladimir Oltean err = __br_vlan_set_default_pvid(br, pvid, extack); 1147047831a9SXin Long out: 114896a20d9dSVlad Yasevich return err; 114996a20d9dSVlad Yasevich } 115096a20d9dSVlad Yasevich 11515be5a2dfSVlad Yasevich int br_vlan_init(struct net_bridge *br) 11528580e211SToshiaki Makita { 1153907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 11542594e906SNikolay Aleksandrov int ret = -ENOMEM; 11552594e906SNikolay Aleksandrov 1156907b1e6eSNikolay Aleksandrov vg = kzalloc(sizeof(*vg), GFP_KERNEL); 1157907b1e6eSNikolay Aleksandrov if (!vg) 11582594e906SNikolay Aleksandrov goto out; 1159907b1e6eSNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 11602594e906SNikolay Aleksandrov if (ret) 11612594e906SNikolay Aleksandrov goto err_rhtbl; 1162efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1163efa5356bSRoopa Prabhu if (ret) 1164efa5356bSRoopa Prabhu goto err_tunnel_init; 1165907b1e6eSNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 11668580e211SToshiaki Makita br->vlan_proto = htons(ETH_P_8021Q); 116796a20d9dSVlad Yasevich br->default_pvid = 1; 1168907b1e6eSNikolay Aleksandrov rcu_assign_pointer(br->vlgrp, vg); 11692594e906SNikolay Aleksandrov 11702594e906SNikolay Aleksandrov out: 11712594e906SNikolay Aleksandrov return ret; 11722594e906SNikolay Aleksandrov 1173efa5356bSRoopa Prabhu err_tunnel_init: 1174907b1e6eSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 11752594e906SNikolay Aleksandrov err_rhtbl: 1176907b1e6eSNikolay Aleksandrov kfree(vg); 11772594e906SNikolay Aleksandrov 11782594e906SNikolay Aleksandrov goto out; 11792594e906SNikolay Aleksandrov } 11802594e906SNikolay Aleksandrov 1181169327d5SPetr Machata int nbp_vlan_init(struct net_bridge_port *p, struct netlink_ext_ack *extack) 11822594e906SNikolay Aleksandrov { 1183404cdbf0SElad Raz struct switchdev_attr attr = { 1184404cdbf0SElad Raz .orig_dev = p->br->dev, 1185404cdbf0SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 1186404cdbf0SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 1187ae75767eSNikolay Aleksandrov .u.vlan_filtering = br_opt_get(p->br, BROPT_VLAN_ENABLED), 1188404cdbf0SElad Raz }; 1189263344e6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 11902594e906SNikolay Aleksandrov int ret = -ENOMEM; 11912594e906SNikolay Aleksandrov 1192263344e6SNikolay Aleksandrov vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); 1193263344e6SNikolay Aleksandrov if (!vg) 11942594e906SNikolay Aleksandrov goto out; 11952594e906SNikolay Aleksandrov 1196dcbdf135SVladimir Oltean ret = switchdev_port_attr_set(p->dev, &attr, extack); 1197404cdbf0SElad Raz if (ret && ret != -EOPNOTSUPP) 1198404cdbf0SElad Raz goto err_vlan_enabled; 1199404cdbf0SElad Raz 1200263344e6SNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 12012594e906SNikolay Aleksandrov if (ret) 12022594e906SNikolay Aleksandrov goto err_rhtbl; 1203efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1204efa5356bSRoopa Prabhu if (ret) 1205efa5356bSRoopa Prabhu goto err_tunnel_init; 1206263344e6SNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 1207907b1e6eSNikolay Aleksandrov rcu_assign_pointer(p->vlgrp, vg); 12082594e906SNikolay Aleksandrov if (p->br->default_pvid) { 1209f418af63SNikolay Aleksandrov bool changed; 1210f418af63SNikolay Aleksandrov 12112594e906SNikolay Aleksandrov ret = nbp_vlan_add(p, p->br->default_pvid, 12122594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1213f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1214169327d5SPetr Machata &changed, extack); 12152594e906SNikolay Aleksandrov if (ret) 12162594e906SNikolay Aleksandrov goto err_vlan_add; 1217f545923bSNikolay Aleksandrov br_vlan_notify(p->br, p, p->br->default_pvid, 0, RTM_NEWVLAN); 12182594e906SNikolay Aleksandrov } 12192594e906SNikolay Aleksandrov out: 12202594e906SNikolay Aleksandrov return ret; 12212594e906SNikolay Aleksandrov 12222594e906SNikolay Aleksandrov err_vlan_add: 122307bc588fSIdo Schimmel RCU_INIT_POINTER(p->vlgrp, NULL); 122407bc588fSIdo Schimmel synchronize_rcu(); 1225efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 1226efa5356bSRoopa Prabhu err_tunnel_init: 1227efa5356bSRoopa Prabhu rhashtable_destroy(&vg->vlan_hash); 12282594e906SNikolay Aleksandrov err_rhtbl: 1229df2c4334SYotam Gigi err_vlan_enabled: 1230263344e6SNikolay Aleksandrov kfree(vg); 12312594e906SNikolay Aleksandrov 12322594e906SNikolay Aleksandrov goto out; 12338580e211SToshiaki Makita } 12348580e211SToshiaki Makita 12358adff41cSToshiaki Makita /* Must be protected by RTNL. 12368adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 1237f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 12388adff41cSToshiaki Makita */ 1239f418af63SNikolay Aleksandrov int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1240169327d5SPetr Machata bool *changed, struct netlink_ext_ack *extack) 1241243a2e63SVlad Yasevich { 12422594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 12432594e906SNikolay Aleksandrov int ret; 1244243a2e63SVlad Yasevich 1245243a2e63SVlad Yasevich ASSERT_RTNL(); 1246243a2e63SVlad Yasevich 1247f418af63SNikolay Aleksandrov *changed = false; 1248907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(nbp_vlan_group(port), vid); 12492594e906SNikolay Aleksandrov if (vlan) { 12507fbac984SIdo Schimmel /* Pass the flags to the hardware bridge */ 1251169327d5SPetr Machata ret = br_switchdev_port_vlan_add(port->dev, vid, flags, extack); 12527fbac984SIdo Schimmel if (ret && ret != -EOPNOTSUPP) 12537fbac984SIdo Schimmel return ret; 1254f418af63SNikolay Aleksandrov *changed = __vlan_add_flags(vlan, flags); 1255f418af63SNikolay Aleksandrov 12562594e906SNikolay Aleksandrov return 0; 1257243a2e63SVlad Yasevich } 1258243a2e63SVlad Yasevich 12592594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 12602594e906SNikolay Aleksandrov if (!vlan) 12612594e906SNikolay Aleksandrov return -ENOMEM; 1262243a2e63SVlad Yasevich 12632594e906SNikolay Aleksandrov vlan->vid = vid; 12642594e906SNikolay Aleksandrov vlan->port = port; 1265169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 12662594e906SNikolay Aleksandrov if (ret) 12672594e906SNikolay Aleksandrov kfree(vlan); 1268f418af63SNikolay Aleksandrov else 1269f418af63SNikolay Aleksandrov *changed = true; 1270243a2e63SVlad Yasevich 12712594e906SNikolay Aleksandrov return ret; 1272243a2e63SVlad Yasevich } 1273243a2e63SVlad Yasevich 12748adff41cSToshiaki Makita /* Must be protected by RTNL. 12758adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 12768adff41cSToshiaki Makita */ 1277243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1278243a2e63SVlad Yasevich { 12792594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 1280243a2e63SVlad Yasevich 1281243a2e63SVlad Yasevich ASSERT_RTNL(); 1282243a2e63SVlad Yasevich 1283907b1e6eSNikolay Aleksandrov v = br_vlan_find(nbp_vlan_group(port), vid); 12842594e906SNikolay Aleksandrov if (!v) 12852594e906SNikolay Aleksandrov return -ENOENT; 1286424bb9c9SToshiaki Makita br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); 12871ea2d020SNikolay Aleksandrov br_fdb_delete_by_port(port->br, port, vid, 0); 1288bc9a25d2SVlad Yasevich 12892594e906SNikolay Aleksandrov return __vlan_del(v); 1290243a2e63SVlad Yasevich } 1291243a2e63SVlad Yasevich 1292243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 1293243a2e63SVlad Yasevich { 1294f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 1295f409d0edSNikolay Aleksandrov 1296243a2e63SVlad Yasevich ASSERT_RTNL(); 1297243a2e63SVlad Yasevich 1298f409d0edSNikolay Aleksandrov vg = nbp_vlan_group(port); 1299f545923bSNikolay Aleksandrov __vlan_flush(port->br, port, vg); 1300f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(port->vlgrp, NULL); 1301f409d0edSNikolay Aleksandrov synchronize_rcu(); 1302f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 13035be5a2dfSVlad Yasevich } 1304a60c0903SNikolay Aleksandrov 1305a60c0903SNikolay Aleksandrov void br_vlan_get_stats(const struct net_bridge_vlan *v, 1306281cc284SHeiner Kallweit struct pcpu_sw_netstats *stats) 1307a60c0903SNikolay Aleksandrov { 1308a60c0903SNikolay Aleksandrov int i; 1309a60c0903SNikolay Aleksandrov 1310a60c0903SNikolay Aleksandrov memset(stats, 0, sizeof(*stats)); 1311a60c0903SNikolay Aleksandrov for_each_possible_cpu(i) { 1312a60c0903SNikolay Aleksandrov u64 rxpackets, rxbytes, txpackets, txbytes; 1313281cc284SHeiner Kallweit struct pcpu_sw_netstats *cpu_stats; 1314a60c0903SNikolay Aleksandrov unsigned int start; 1315a60c0903SNikolay Aleksandrov 1316a60c0903SNikolay Aleksandrov cpu_stats = per_cpu_ptr(v->stats, i); 1317a60c0903SNikolay Aleksandrov do { 1318a60c0903SNikolay Aleksandrov start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); 1319a60c0903SNikolay Aleksandrov rxpackets = cpu_stats->rx_packets; 1320a60c0903SNikolay Aleksandrov rxbytes = cpu_stats->rx_bytes; 1321a60c0903SNikolay Aleksandrov txbytes = cpu_stats->tx_bytes; 1322a60c0903SNikolay Aleksandrov txpackets = cpu_stats->tx_packets; 1323a60c0903SNikolay Aleksandrov } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); 1324a60c0903SNikolay Aleksandrov 1325a60c0903SNikolay Aleksandrov stats->rx_packets += rxpackets; 1326a60c0903SNikolay Aleksandrov stats->rx_bytes += rxbytes; 1327a60c0903SNikolay Aleksandrov stats->tx_bytes += txbytes; 1328a60c0903SNikolay Aleksandrov stats->tx_packets += txpackets; 1329a60c0903SNikolay Aleksandrov } 1330a60c0903SNikolay Aleksandrov } 13314d4fd361SPetr Machata 133299f62a74SVladimir Oltean int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 13334d4fd361SPetr Machata { 13344d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 133599f62a74SVladimir Oltean struct net_bridge_port *p; 13364d4fd361SPetr Machata 133799f62a74SVladimir Oltean ASSERT_RTNL(); 133899f62a74SVladimir Oltean p = br_port_get_check_rtnl(dev); 13395a6db04cSIdo Schimmel if (p) 13405a6db04cSIdo Schimmel vg = nbp_vlan_group(p); 13415a6db04cSIdo Schimmel else if (netif_is_bridge_master(dev)) 13424d4fd361SPetr Machata vg = br_vlan_group(netdev_priv(dev)); 13434d4fd361SPetr Machata else 13444d4fd361SPetr Machata return -EINVAL; 13454d4fd361SPetr Machata 13464d4fd361SPetr Machata *p_pvid = br_get_pvid(vg); 13474d4fd361SPetr Machata return 0; 13484d4fd361SPetr Machata } 13494d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_pvid); 13504d4fd361SPetr Machata 13517582f5b7SPablo Neira Ayuso int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 13527582f5b7SPablo Neira Ayuso { 135399f62a74SVladimir Oltean struct net_bridge_vlan_group *vg; 135499f62a74SVladimir Oltean struct net_bridge_port *p; 135599f62a74SVladimir Oltean 135699f62a74SVladimir Oltean p = br_port_get_check_rcu(dev); 135799f62a74SVladimir Oltean if (p) 135899f62a74SVladimir Oltean vg = nbp_vlan_group_rcu(p); 135999f62a74SVladimir Oltean else if (netif_is_bridge_master(dev)) 136099f62a74SVladimir Oltean vg = br_vlan_group_rcu(netdev_priv(dev)); 136199f62a74SVladimir Oltean else 136299f62a74SVladimir Oltean return -EINVAL; 136399f62a74SVladimir Oltean 136499f62a74SVladimir Oltean *p_pvid = br_get_pvid(vg); 136599f62a74SVladimir Oltean return 0; 13667582f5b7SPablo Neira Ayuso } 13677582f5b7SPablo Neira Ayuso EXPORT_SYMBOL_GPL(br_vlan_get_pvid_rcu); 13687582f5b7SPablo Neira Ayuso 1369bcf2766bSFelix Fietkau void br_vlan_fill_forward_path_pvid(struct net_bridge *br, 1370bcf2766bSFelix Fietkau struct net_device_path_ctx *ctx, 1371bcf2766bSFelix Fietkau struct net_device_path *path) 1372bcf2766bSFelix Fietkau { 1373bcf2766bSFelix Fietkau struct net_bridge_vlan_group *vg; 1374bcf2766bSFelix Fietkau int idx = ctx->num_vlans - 1; 1375bcf2766bSFelix Fietkau u16 vid; 1376bcf2766bSFelix Fietkau 1377bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_KEEP; 1378bcf2766bSFelix Fietkau 1379bcf2766bSFelix Fietkau if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 1380bcf2766bSFelix Fietkau return; 1381bcf2766bSFelix Fietkau 1382bcf2766bSFelix Fietkau vg = br_vlan_group(br); 1383bcf2766bSFelix Fietkau 1384bcf2766bSFelix Fietkau if (idx >= 0 && 1385bcf2766bSFelix Fietkau ctx->vlan[idx].proto == br->vlan_proto) { 1386bcf2766bSFelix Fietkau vid = ctx->vlan[idx].id; 1387bcf2766bSFelix Fietkau } else { 1388bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_TAG; 1389bcf2766bSFelix Fietkau vid = br_get_pvid(vg); 1390bcf2766bSFelix Fietkau } 1391bcf2766bSFelix Fietkau 1392bcf2766bSFelix Fietkau path->bridge.vlan_id = vid; 1393bcf2766bSFelix Fietkau path->bridge.vlan_proto = br->vlan_proto; 1394bcf2766bSFelix Fietkau } 1395bcf2766bSFelix Fietkau 1396bcf2766bSFelix Fietkau int br_vlan_fill_forward_path_mode(struct net_bridge *br, 1397bcf2766bSFelix Fietkau struct net_bridge_port *dst, 1398bcf2766bSFelix Fietkau struct net_device_path *path) 1399bcf2766bSFelix Fietkau { 1400bcf2766bSFelix Fietkau struct net_bridge_vlan_group *vg; 1401bcf2766bSFelix Fietkau struct net_bridge_vlan *v; 1402bcf2766bSFelix Fietkau 1403bcf2766bSFelix Fietkau if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 1404bcf2766bSFelix Fietkau return 0; 1405bcf2766bSFelix Fietkau 1406bcf2766bSFelix Fietkau vg = nbp_vlan_group_rcu(dst); 1407bcf2766bSFelix Fietkau v = br_vlan_find(vg, path->bridge.vlan_id); 1408bcf2766bSFelix Fietkau if (!v || !br_vlan_should_use(v)) 1409bcf2766bSFelix Fietkau return -EINVAL; 1410bcf2766bSFelix Fietkau 1411bcf2766bSFelix Fietkau if (!(v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 1412bcf2766bSFelix Fietkau return 0; 1413bcf2766bSFelix Fietkau 1414bcf2766bSFelix Fietkau if (path->bridge.vlan_mode == DEV_PATH_BR_VLAN_TAG) 1415bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_KEEP; 141626267bf9SFelix Fietkau else if (v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV) 141726267bf9SFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_UNTAG_HW; 1418bcf2766bSFelix Fietkau else 1419bcf2766bSFelix Fietkau path->bridge.vlan_mode = DEV_PATH_BR_VLAN_UNTAG; 1420bcf2766bSFelix Fietkau 1421bcf2766bSFelix Fietkau return 0; 1422bcf2766bSFelix Fietkau } 1423bcf2766bSFelix Fietkau 14244d4fd361SPetr Machata int br_vlan_get_info(const struct net_device *dev, u16 vid, 14254d4fd361SPetr Machata struct bridge_vlan_info *p_vinfo) 14264d4fd361SPetr Machata { 14274d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 14284d4fd361SPetr Machata struct net_bridge_vlan *v; 14294d4fd361SPetr Machata struct net_bridge_port *p; 14304d4fd361SPetr Machata 14314d4fd361SPetr Machata ASSERT_RTNL(); 14324d4fd361SPetr Machata p = br_port_get_check_rtnl(dev); 14334d4fd361SPetr Machata if (p) 14344d4fd361SPetr Machata vg = nbp_vlan_group(p); 14352b18d79eSPetr Machata else if (netif_is_bridge_master(dev)) 14362b18d79eSPetr Machata vg = br_vlan_group(netdev_priv(dev)); 14374d4fd361SPetr Machata else 14384d4fd361SPetr Machata return -EINVAL; 14394d4fd361SPetr Machata 14404d4fd361SPetr Machata v = br_vlan_find(vg, vid); 14414d4fd361SPetr Machata if (!v) 14424d4fd361SPetr Machata return -ENOENT; 14434d4fd361SPetr Machata 14444d4fd361SPetr Machata p_vinfo->vid = vid; 14454d4fd361SPetr Machata p_vinfo->flags = v->flags; 1446f40d9b20SVladimir Oltean if (vid == br_get_pvid(vg)) 1447f40d9b20SVladimir Oltean p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID; 14484d4fd361SPetr Machata return 0; 14494d4fd361SPetr Machata } 14504d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_info); 14519c0ec2e7SMike Manning 1452ee80dd2eSVladimir Oltean int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 1453ee80dd2eSVladimir Oltean struct bridge_vlan_info *p_vinfo) 1454ee80dd2eSVladimir Oltean { 1455ee80dd2eSVladimir Oltean struct net_bridge_vlan_group *vg; 1456ee80dd2eSVladimir Oltean struct net_bridge_vlan *v; 1457ee80dd2eSVladimir Oltean struct net_bridge_port *p; 1458ee80dd2eSVladimir Oltean 1459ee80dd2eSVladimir Oltean p = br_port_get_check_rcu(dev); 1460ee80dd2eSVladimir Oltean if (p) 1461ee80dd2eSVladimir Oltean vg = nbp_vlan_group_rcu(p); 1462ee80dd2eSVladimir Oltean else if (netif_is_bridge_master(dev)) 1463ee80dd2eSVladimir Oltean vg = br_vlan_group_rcu(netdev_priv(dev)); 1464ee80dd2eSVladimir Oltean else 1465ee80dd2eSVladimir Oltean return -EINVAL; 1466ee80dd2eSVladimir Oltean 1467ee80dd2eSVladimir Oltean v = br_vlan_find(vg, vid); 1468ee80dd2eSVladimir Oltean if (!v) 1469ee80dd2eSVladimir Oltean return -ENOENT; 1470ee80dd2eSVladimir Oltean 1471ee80dd2eSVladimir Oltean p_vinfo->vid = vid; 1472ee80dd2eSVladimir Oltean p_vinfo->flags = v->flags; 1473ee80dd2eSVladimir Oltean if (vid == br_get_pvid(vg)) 1474ee80dd2eSVladimir Oltean p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID; 1475ee80dd2eSVladimir Oltean return 0; 1476ee80dd2eSVladimir Oltean } 1477ee80dd2eSVladimir Oltean EXPORT_SYMBOL_GPL(br_vlan_get_info_rcu); 1478ee80dd2eSVladimir Oltean 14799c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev(const struct net_device *dev) 14809c0ec2e7SMike Manning { 14819c0ec2e7SMike Manning return is_vlan_dev(dev) && 14829c0ec2e7SMike Manning !!(vlan_dev_priv(dev)->flags & VLAN_FLAG_BRIDGE_BINDING); 14839c0ec2e7SMike Manning } 14849c0ec2e7SMike Manning 14859c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev_fn(struct net_device *dev, 1486eff74233STaehee Yoo __always_unused struct netdev_nested_priv *priv) 14879c0ec2e7SMike Manning { 14889c0ec2e7SMike Manning return br_vlan_is_bind_vlan_dev(dev); 14899c0ec2e7SMike Manning } 14909c0ec2e7SMike Manning 14919c0ec2e7SMike Manning static bool br_vlan_has_upper_bind_vlan_dev(struct net_device *dev) 14929c0ec2e7SMike Manning { 14939c0ec2e7SMike Manning int found; 14949c0ec2e7SMike Manning 14959c0ec2e7SMike Manning rcu_read_lock(); 14969c0ec2e7SMike Manning found = netdev_walk_all_upper_dev_rcu(dev, br_vlan_is_bind_vlan_dev_fn, 14979c0ec2e7SMike Manning NULL); 14989c0ec2e7SMike Manning rcu_read_unlock(); 14999c0ec2e7SMike Manning 15009c0ec2e7SMike Manning return !!found; 15019c0ec2e7SMike Manning } 15029c0ec2e7SMike Manning 15039c0ec2e7SMike Manning struct br_vlan_bind_walk_data { 15049c0ec2e7SMike Manning u16 vid; 15059c0ec2e7SMike Manning struct net_device *result; 15069c0ec2e7SMike Manning }; 15079c0ec2e7SMike Manning 15089c0ec2e7SMike Manning static int br_vlan_match_bind_vlan_dev_fn(struct net_device *dev, 1509eff74233STaehee Yoo struct netdev_nested_priv *priv) 15109c0ec2e7SMike Manning { 1511eff74233STaehee Yoo struct br_vlan_bind_walk_data *data = priv->data; 15129c0ec2e7SMike Manning int found = 0; 15139c0ec2e7SMike Manning 15149c0ec2e7SMike Manning if (br_vlan_is_bind_vlan_dev(dev) && 15159c0ec2e7SMike Manning vlan_dev_priv(dev)->vlan_id == data->vid) { 15169c0ec2e7SMike Manning data->result = dev; 15179c0ec2e7SMike Manning found = 1; 15189c0ec2e7SMike Manning } 15199c0ec2e7SMike Manning 15209c0ec2e7SMike Manning return found; 15219c0ec2e7SMike Manning } 15229c0ec2e7SMike Manning 15239c0ec2e7SMike Manning static struct net_device * 15249c0ec2e7SMike Manning br_vlan_get_upper_bind_vlan_dev(struct net_device *dev, u16 vid) 15259c0ec2e7SMike Manning { 15269c0ec2e7SMike Manning struct br_vlan_bind_walk_data data = { 15279c0ec2e7SMike Manning .vid = vid, 15289c0ec2e7SMike Manning }; 1529eff74233STaehee Yoo struct netdev_nested_priv priv = { 1530eff74233STaehee Yoo .data = (void *)&data, 1531eff74233STaehee Yoo }; 15329c0ec2e7SMike Manning 15339c0ec2e7SMike Manning rcu_read_lock(); 15349c0ec2e7SMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_match_bind_vlan_dev_fn, 1535eff74233STaehee Yoo &priv); 15369c0ec2e7SMike Manning rcu_read_unlock(); 15379c0ec2e7SMike Manning 15389c0ec2e7SMike Manning return data.result; 15399c0ec2e7SMike Manning } 15409c0ec2e7SMike Manning 15419c0ec2e7SMike Manning static bool br_vlan_is_dev_up(const struct net_device *dev) 15429c0ec2e7SMike Manning { 15439c0ec2e7SMike Manning return !!(dev->flags & IFF_UP) && netif_oper_up(dev); 15449c0ec2e7SMike Manning } 15459c0ec2e7SMike Manning 15469c0ec2e7SMike Manning static void br_vlan_set_vlan_dev_state(const struct net_bridge *br, 15479c0ec2e7SMike Manning struct net_device *vlan_dev) 15489c0ec2e7SMike Manning { 15499c0ec2e7SMike Manning u16 vid = vlan_dev_priv(vlan_dev)->vlan_id; 15509c0ec2e7SMike Manning struct net_bridge_vlan_group *vg; 15519c0ec2e7SMike Manning struct net_bridge_port *p; 15529c0ec2e7SMike Manning bool has_carrier = false; 15539c0ec2e7SMike Manning 15548e1acd4fSMike Manning if (!netif_carrier_ok(br->dev)) { 15558e1acd4fSMike Manning netif_carrier_off(vlan_dev); 15568e1acd4fSMike Manning return; 15578e1acd4fSMike Manning } 15588e1acd4fSMike Manning 15599c0ec2e7SMike Manning list_for_each_entry(p, &br->port_list, list) { 15609c0ec2e7SMike Manning vg = nbp_vlan_group(p); 15619c0ec2e7SMike Manning if (br_vlan_find(vg, vid) && br_vlan_is_dev_up(p->dev)) { 15629c0ec2e7SMike Manning has_carrier = true; 15639c0ec2e7SMike Manning break; 15649c0ec2e7SMike Manning } 15659c0ec2e7SMike Manning } 15669c0ec2e7SMike Manning 15679c0ec2e7SMike Manning if (has_carrier) 15689c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 15699c0ec2e7SMike Manning else 15709c0ec2e7SMike Manning netif_carrier_off(vlan_dev); 15719c0ec2e7SMike Manning } 15729c0ec2e7SMike Manning 15739c0ec2e7SMike Manning static void br_vlan_set_all_vlan_dev_state(struct net_bridge_port *p) 15749c0ec2e7SMike Manning { 15759c0ec2e7SMike Manning struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 15769c0ec2e7SMike Manning struct net_bridge_vlan *vlan; 15779c0ec2e7SMike Manning struct net_device *vlan_dev; 15789c0ec2e7SMike Manning 15799c0ec2e7SMike Manning list_for_each_entry(vlan, &vg->vlan_list, vlist) { 15809c0ec2e7SMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, 15819c0ec2e7SMike Manning vlan->vid); 15829c0ec2e7SMike Manning if (vlan_dev) { 15838e1acd4fSMike Manning if (br_vlan_is_dev_up(p->dev)) { 15848e1acd4fSMike Manning if (netif_carrier_ok(p->br->dev)) 15859c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 15868e1acd4fSMike Manning } else { 15879c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 15889c0ec2e7SMike Manning } 15899c0ec2e7SMike Manning } 15909c0ec2e7SMike Manning } 15918e1acd4fSMike Manning } 15929c0ec2e7SMike Manning 15939c0ec2e7SMike Manning static void br_vlan_upper_change(struct net_device *dev, 15949c0ec2e7SMike Manning struct net_device *upper_dev, 15959c0ec2e7SMike Manning bool linking) 15969c0ec2e7SMike Manning { 15979c0ec2e7SMike Manning struct net_bridge *br = netdev_priv(dev); 15989c0ec2e7SMike Manning 15999c0ec2e7SMike Manning if (!br_vlan_is_bind_vlan_dev(upper_dev)) 16009c0ec2e7SMike Manning return; 16019c0ec2e7SMike Manning 16029c0ec2e7SMike Manning if (linking) { 16039c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(br, upper_dev); 16049c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, true); 16059c0ec2e7SMike Manning } else { 16069c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, 16079c0ec2e7SMike Manning br_vlan_has_upper_bind_vlan_dev(dev)); 16089c0ec2e7SMike Manning } 16099c0ec2e7SMike Manning } 16109c0ec2e7SMike Manning 16118e1acd4fSMike Manning struct br_vlan_link_state_walk_data { 16128e1acd4fSMike Manning struct net_bridge *br; 16138e1acd4fSMike Manning }; 16148e1acd4fSMike Manning 16158e1acd4fSMike Manning static int br_vlan_link_state_change_fn(struct net_device *vlan_dev, 1616eff74233STaehee Yoo struct netdev_nested_priv *priv) 16178e1acd4fSMike Manning { 1618eff74233STaehee Yoo struct br_vlan_link_state_walk_data *data = priv->data; 16198e1acd4fSMike Manning 16208e1acd4fSMike Manning if (br_vlan_is_bind_vlan_dev(vlan_dev)) 16218e1acd4fSMike Manning br_vlan_set_vlan_dev_state(data->br, vlan_dev); 16228e1acd4fSMike Manning 16238e1acd4fSMike Manning return 0; 16248e1acd4fSMike Manning } 16258e1acd4fSMike Manning 16268e1acd4fSMike Manning static void br_vlan_link_state_change(struct net_device *dev, 16278e1acd4fSMike Manning struct net_bridge *br) 16288e1acd4fSMike Manning { 16298e1acd4fSMike Manning struct br_vlan_link_state_walk_data data = { 16308e1acd4fSMike Manning .br = br 16318e1acd4fSMike Manning }; 1632eff74233STaehee Yoo struct netdev_nested_priv priv = { 1633eff74233STaehee Yoo .data = (void *)&data, 1634eff74233STaehee Yoo }; 16358e1acd4fSMike Manning 16368e1acd4fSMike Manning rcu_read_lock(); 16378e1acd4fSMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_link_state_change_fn, 1638eff74233STaehee Yoo &priv); 16398e1acd4fSMike Manning rcu_read_unlock(); 16408e1acd4fSMike Manning } 16418e1acd4fSMike Manning 16429c0ec2e7SMike Manning /* Must be protected by RTNL. */ 164380900acdSMike Manning static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid) 164480900acdSMike Manning { 164580900acdSMike Manning struct net_device *vlan_dev; 164680900acdSMike Manning 164780900acdSMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 164880900acdSMike Manning return; 164980900acdSMike Manning 165080900acdSMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, vid); 165180900acdSMike Manning if (vlan_dev) 165280900acdSMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 165380900acdSMike Manning } 165480900acdSMike Manning 165580900acdSMike Manning /* Must be protected by RTNL. */ 1656091adf9bSNikolay Aleksandrov int br_vlan_bridge_event(struct net_device *dev, unsigned long event, void *ptr) 16579c0ec2e7SMike Manning { 16589c0ec2e7SMike Manning struct netdev_notifier_changeupper_info *info; 1659091adf9bSNikolay Aleksandrov struct net_bridge *br = netdev_priv(dev); 1660f545923bSNikolay Aleksandrov int vlcmd = 0, ret = 0; 1661f545923bSNikolay Aleksandrov bool changed = false; 16629c0ec2e7SMike Manning 16639c0ec2e7SMike Manning switch (event) { 1664091adf9bSNikolay Aleksandrov case NETDEV_REGISTER: 1665091adf9bSNikolay Aleksandrov ret = br_vlan_add(br, br->default_pvid, 1666091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1667091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1668091adf9bSNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, &changed, NULL); 1669f545923bSNikolay Aleksandrov vlcmd = RTM_NEWVLAN; 1670091adf9bSNikolay Aleksandrov break; 1671091adf9bSNikolay Aleksandrov case NETDEV_UNREGISTER: 1672f545923bSNikolay Aleksandrov changed = !br_vlan_delete(br, br->default_pvid); 1673f545923bSNikolay Aleksandrov vlcmd = RTM_DELVLAN; 1674091adf9bSNikolay Aleksandrov break; 16759c0ec2e7SMike Manning case NETDEV_CHANGEUPPER: 16769c0ec2e7SMike Manning info = ptr; 16779c0ec2e7SMike Manning br_vlan_upper_change(dev, info->upper_dev, info->linking); 16789c0ec2e7SMike Manning break; 16798e1acd4fSMike Manning 16808e1acd4fSMike Manning case NETDEV_CHANGE: 16818e1acd4fSMike Manning case NETDEV_UP: 16828e1acd4fSMike Manning if (!br_opt_get(br, BROPT_VLAN_BRIDGE_BINDING)) 1683091adf9bSNikolay Aleksandrov break; 16848e1acd4fSMike Manning br_vlan_link_state_change(dev, br); 16858e1acd4fSMike Manning break; 16869c0ec2e7SMike Manning } 1687f545923bSNikolay Aleksandrov if (changed) 1688f545923bSNikolay Aleksandrov br_vlan_notify(br, NULL, br->default_pvid, 0, vlcmd); 1689091adf9bSNikolay Aleksandrov 1690091adf9bSNikolay Aleksandrov return ret; 16919c0ec2e7SMike Manning } 16929c0ec2e7SMike Manning 16939c0ec2e7SMike Manning /* Must be protected by RTNL. */ 16949c0ec2e7SMike Manning void br_vlan_port_event(struct net_bridge_port *p, unsigned long event) 16959c0ec2e7SMike Manning { 16969c0ec2e7SMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 16979c0ec2e7SMike Manning return; 16989c0ec2e7SMike Manning 16999c0ec2e7SMike Manning switch (event) { 17009c0ec2e7SMike Manning case NETDEV_CHANGE: 17019c0ec2e7SMike Manning case NETDEV_DOWN: 17029c0ec2e7SMike Manning case NETDEV_UP: 17039c0ec2e7SMike Manning br_vlan_set_all_vlan_dev_state(p); 17049c0ec2e7SMike Manning break; 17059c0ec2e7SMike Manning } 17069c0ec2e7SMike Manning } 17078dcea187SNikolay Aleksandrov 170856d09976SNikolay Aleksandrov static bool br_vlan_stats_fill(struct sk_buff *skb, 170956d09976SNikolay Aleksandrov const struct net_bridge_vlan *v) 171056d09976SNikolay Aleksandrov { 1711281cc284SHeiner Kallweit struct pcpu_sw_netstats stats; 171256d09976SNikolay Aleksandrov struct nlattr *nest; 171356d09976SNikolay Aleksandrov 171456d09976SNikolay Aleksandrov nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY_STATS); 171556d09976SNikolay Aleksandrov if (!nest) 171656d09976SNikolay Aleksandrov return false; 171756d09976SNikolay Aleksandrov 171856d09976SNikolay Aleksandrov br_vlan_get_stats(v, &stats); 171956d09976SNikolay Aleksandrov if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_BYTES, stats.rx_bytes, 172056d09976SNikolay Aleksandrov BRIDGE_VLANDB_STATS_PAD) || 172156d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_PACKETS, 172256d09976SNikolay Aleksandrov stats.rx_packets, BRIDGE_VLANDB_STATS_PAD) || 172356d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_BYTES, stats.tx_bytes, 172456d09976SNikolay Aleksandrov BRIDGE_VLANDB_STATS_PAD) || 172556d09976SNikolay Aleksandrov nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_PACKETS, 172656d09976SNikolay Aleksandrov stats.tx_packets, BRIDGE_VLANDB_STATS_PAD)) 172756d09976SNikolay Aleksandrov goto out_err; 172856d09976SNikolay Aleksandrov 172956d09976SNikolay Aleksandrov nla_nest_end(skb, nest); 173056d09976SNikolay Aleksandrov 173156d09976SNikolay Aleksandrov return true; 173256d09976SNikolay Aleksandrov 173356d09976SNikolay Aleksandrov out_err: 173456d09976SNikolay Aleksandrov nla_nest_cancel(skb, nest); 173556d09976SNikolay Aleksandrov return false; 173656d09976SNikolay Aleksandrov } 173756d09976SNikolay Aleksandrov 17387a53e718SNikolay Aleksandrov /* v_opts is used to dump the options which must be equal in the whole range */ 17390ab55879SNikolay Aleksandrov static bool br_vlan_fill_vids(struct sk_buff *skb, u16 vid, u16 vid_range, 17407a53e718SNikolay Aleksandrov const struct net_bridge_vlan *v_opts, 174156d09976SNikolay Aleksandrov u16 flags, 174256d09976SNikolay Aleksandrov bool dump_stats) 17438dcea187SNikolay Aleksandrov { 17448dcea187SNikolay Aleksandrov struct bridge_vlan_info info; 17458dcea187SNikolay Aleksandrov struct nlattr *nest; 17468dcea187SNikolay Aleksandrov 17478dcea187SNikolay Aleksandrov nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY); 17488dcea187SNikolay Aleksandrov if (!nest) 17498dcea187SNikolay Aleksandrov return false; 17508dcea187SNikolay Aleksandrov 17518dcea187SNikolay Aleksandrov memset(&info, 0, sizeof(info)); 17528dcea187SNikolay Aleksandrov info.vid = vid; 17538dcea187SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 17548dcea187SNikolay Aleksandrov info.flags |= BRIDGE_VLAN_INFO_UNTAGGED; 17558dcea187SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_PVID) 17568dcea187SNikolay Aleksandrov info.flags |= BRIDGE_VLAN_INFO_PVID; 17578dcea187SNikolay Aleksandrov 17588dcea187SNikolay Aleksandrov if (nla_put(skb, BRIDGE_VLANDB_ENTRY_INFO, sizeof(info), &info)) 17598dcea187SNikolay Aleksandrov goto out_err; 17608dcea187SNikolay Aleksandrov 17610ab55879SNikolay Aleksandrov if (vid_range && vid < vid_range && 17620ab55879SNikolay Aleksandrov !(flags & BRIDGE_VLAN_INFO_PVID) && 17630ab55879SNikolay Aleksandrov nla_put_u16(skb, BRIDGE_VLANDB_ENTRY_RANGE, vid_range)) 17640ab55879SNikolay Aleksandrov goto out_err; 17650ab55879SNikolay Aleksandrov 176656d09976SNikolay Aleksandrov if (v_opts) { 176756d09976SNikolay Aleksandrov if (!br_vlan_opts_fill(skb, v_opts)) 17687a53e718SNikolay Aleksandrov goto out_err; 17697a53e718SNikolay Aleksandrov 177056d09976SNikolay Aleksandrov if (dump_stats && !br_vlan_stats_fill(skb, v_opts)) 177156d09976SNikolay Aleksandrov goto out_err; 177256d09976SNikolay Aleksandrov } 177356d09976SNikolay Aleksandrov 17748dcea187SNikolay Aleksandrov nla_nest_end(skb, nest); 17758dcea187SNikolay Aleksandrov 17768dcea187SNikolay Aleksandrov return true; 17778dcea187SNikolay Aleksandrov 17788dcea187SNikolay Aleksandrov out_err: 17798dcea187SNikolay Aleksandrov nla_nest_cancel(skb, nest); 17808dcea187SNikolay Aleksandrov return false; 17818dcea187SNikolay Aleksandrov } 17828dcea187SNikolay Aleksandrov 1783cf5bddb9SNikolay Aleksandrov static size_t rtnl_vlan_nlmsg_size(void) 1784cf5bddb9SNikolay Aleksandrov { 1785cf5bddb9SNikolay Aleksandrov return NLMSG_ALIGN(sizeof(struct br_vlan_msg)) 1786cf5bddb9SNikolay Aleksandrov + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY */ 1787cf5bddb9SNikolay Aleksandrov + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_ENTRY_RANGE */ 17887a53e718SNikolay Aleksandrov + nla_total_size(sizeof(struct bridge_vlan_info)) /* BRIDGE_VLANDB_ENTRY_INFO */ 17897a53e718SNikolay Aleksandrov + br_vlan_opts_nl_size(); /* bridge vlan options */ 1790cf5bddb9SNikolay Aleksandrov } 1791cf5bddb9SNikolay Aleksandrov 1792cf5bddb9SNikolay Aleksandrov void br_vlan_notify(const struct net_bridge *br, 1793cf5bddb9SNikolay Aleksandrov const struct net_bridge_port *p, 1794cf5bddb9SNikolay Aleksandrov u16 vid, u16 vid_range, 1795cf5bddb9SNikolay Aleksandrov int cmd) 1796cf5bddb9SNikolay Aleksandrov { 1797cf5bddb9SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 17987a53e718SNikolay Aleksandrov struct net_bridge_vlan *v = NULL; 1799cf5bddb9SNikolay Aleksandrov struct br_vlan_msg *bvm; 1800cf5bddb9SNikolay Aleksandrov struct nlmsghdr *nlh; 1801cf5bddb9SNikolay Aleksandrov struct sk_buff *skb; 1802cf5bddb9SNikolay Aleksandrov int err = -ENOBUFS; 1803cf5bddb9SNikolay Aleksandrov struct net *net; 1804cf5bddb9SNikolay Aleksandrov u16 flags = 0; 1805cf5bddb9SNikolay Aleksandrov int ifindex; 1806cf5bddb9SNikolay Aleksandrov 1807cf5bddb9SNikolay Aleksandrov /* right now notifications are done only with rtnl held */ 1808cf5bddb9SNikolay Aleksandrov ASSERT_RTNL(); 1809cf5bddb9SNikolay Aleksandrov 1810cf5bddb9SNikolay Aleksandrov if (p) { 1811cf5bddb9SNikolay Aleksandrov ifindex = p->dev->ifindex; 1812cf5bddb9SNikolay Aleksandrov vg = nbp_vlan_group(p); 1813cf5bddb9SNikolay Aleksandrov net = dev_net(p->dev); 1814cf5bddb9SNikolay Aleksandrov } else { 1815cf5bddb9SNikolay Aleksandrov ifindex = br->dev->ifindex; 1816cf5bddb9SNikolay Aleksandrov vg = br_vlan_group(br); 1817cf5bddb9SNikolay Aleksandrov net = dev_net(br->dev); 1818cf5bddb9SNikolay Aleksandrov } 1819cf5bddb9SNikolay Aleksandrov 1820cf5bddb9SNikolay Aleksandrov skb = nlmsg_new(rtnl_vlan_nlmsg_size(), GFP_KERNEL); 1821cf5bddb9SNikolay Aleksandrov if (!skb) 1822cf5bddb9SNikolay Aleksandrov goto out_err; 1823cf5bddb9SNikolay Aleksandrov 1824cf5bddb9SNikolay Aleksandrov err = -EMSGSIZE; 1825cf5bddb9SNikolay Aleksandrov nlh = nlmsg_put(skb, 0, 0, cmd, sizeof(*bvm), 0); 1826cf5bddb9SNikolay Aleksandrov if (!nlh) 1827cf5bddb9SNikolay Aleksandrov goto out_err; 1828cf5bddb9SNikolay Aleksandrov bvm = nlmsg_data(nlh); 1829cf5bddb9SNikolay Aleksandrov memset(bvm, 0, sizeof(*bvm)); 1830cf5bddb9SNikolay Aleksandrov bvm->family = AF_BRIDGE; 1831cf5bddb9SNikolay Aleksandrov bvm->ifindex = ifindex; 1832cf5bddb9SNikolay Aleksandrov 1833cf5bddb9SNikolay Aleksandrov switch (cmd) { 1834cf5bddb9SNikolay Aleksandrov case RTM_NEWVLAN: 1835cf5bddb9SNikolay Aleksandrov /* need to find the vlan due to flags/options */ 1836cf5bddb9SNikolay Aleksandrov v = br_vlan_find(vg, vid); 1837cf5bddb9SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 1838cf5bddb9SNikolay Aleksandrov goto out_kfree; 1839cf5bddb9SNikolay Aleksandrov 1840cf5bddb9SNikolay Aleksandrov flags = v->flags; 1841cf5bddb9SNikolay Aleksandrov if (br_get_pvid(vg) == v->vid) 1842cf5bddb9SNikolay Aleksandrov flags |= BRIDGE_VLAN_INFO_PVID; 1843cf5bddb9SNikolay Aleksandrov break; 1844cf5bddb9SNikolay Aleksandrov case RTM_DELVLAN: 1845cf5bddb9SNikolay Aleksandrov break; 1846cf5bddb9SNikolay Aleksandrov default: 1847cf5bddb9SNikolay Aleksandrov goto out_kfree; 1848cf5bddb9SNikolay Aleksandrov } 1849cf5bddb9SNikolay Aleksandrov 185056d09976SNikolay Aleksandrov if (!br_vlan_fill_vids(skb, vid, vid_range, v, flags, false)) 1851cf5bddb9SNikolay Aleksandrov goto out_err; 1852cf5bddb9SNikolay Aleksandrov 1853cf5bddb9SNikolay Aleksandrov nlmsg_end(skb, nlh); 1854cf5bddb9SNikolay Aleksandrov rtnl_notify(skb, net, 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL); 1855cf5bddb9SNikolay Aleksandrov return; 1856cf5bddb9SNikolay Aleksandrov 1857cf5bddb9SNikolay Aleksandrov out_err: 1858cf5bddb9SNikolay Aleksandrov rtnl_set_sk_err(net, RTNLGRP_BRVLAN, err); 1859cf5bddb9SNikolay Aleksandrov out_kfree: 1860cf5bddb9SNikolay Aleksandrov kfree_skb(skb); 1861cf5bddb9SNikolay Aleksandrov } 1862cf5bddb9SNikolay Aleksandrov 186322f67cdfSVladimir Oltean static int br_vlan_replay_one(struct notifier_block *nb, 186422f67cdfSVladimir Oltean struct net_device *dev, 186522f67cdfSVladimir Oltean struct switchdev_obj_port_vlan *vlan, 18667e8c1858SVladimir Oltean const void *ctx, unsigned long action, 18677e8c1858SVladimir Oltean struct netlink_ext_ack *extack) 186822f67cdfSVladimir Oltean { 186922f67cdfSVladimir Oltean struct switchdev_notifier_port_obj_info obj_info = { 187022f67cdfSVladimir Oltean .info = { 187122f67cdfSVladimir Oltean .dev = dev, 187222f67cdfSVladimir Oltean .extack = extack, 18730d2cfbd4SVladimir Oltean .ctx = ctx, 187422f67cdfSVladimir Oltean }, 187522f67cdfSVladimir Oltean .obj = &vlan->obj, 187622f67cdfSVladimir Oltean }; 187722f67cdfSVladimir Oltean int err; 187822f67cdfSVladimir Oltean 18797e8c1858SVladimir Oltean err = nb->notifier_call(nb, action, &obj_info); 188022f67cdfSVladimir Oltean return notifier_to_errno(err); 188122f67cdfSVladimir Oltean } 188222f67cdfSVladimir Oltean 188322f67cdfSVladimir Oltean int br_vlan_replay(struct net_device *br_dev, struct net_device *dev, 18847e8c1858SVladimir Oltean const void *ctx, bool adding, struct notifier_block *nb, 18850d2cfbd4SVladimir Oltean struct netlink_ext_ack *extack) 188622f67cdfSVladimir Oltean { 188722f67cdfSVladimir Oltean struct net_bridge_vlan_group *vg; 188822f67cdfSVladimir Oltean struct net_bridge_vlan *v; 188922f67cdfSVladimir Oltean struct net_bridge_port *p; 189022f67cdfSVladimir Oltean struct net_bridge *br; 18917e8c1858SVladimir Oltean unsigned long action; 189222f67cdfSVladimir Oltean int err = 0; 189322f67cdfSVladimir Oltean u16 pvid; 189422f67cdfSVladimir Oltean 189522f67cdfSVladimir Oltean ASSERT_RTNL(); 189622f67cdfSVladimir Oltean 18977105b50bSVladimir Oltean if (!nb) 18987105b50bSVladimir Oltean return 0; 18997105b50bSVladimir Oltean 190022f67cdfSVladimir Oltean if (!netif_is_bridge_master(br_dev)) 190122f67cdfSVladimir Oltean return -EINVAL; 190222f67cdfSVladimir Oltean 190322f67cdfSVladimir Oltean if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) 190422f67cdfSVladimir Oltean return -EINVAL; 190522f67cdfSVladimir Oltean 190622f67cdfSVladimir Oltean if (netif_is_bridge_master(dev)) { 190722f67cdfSVladimir Oltean br = netdev_priv(dev); 190822f67cdfSVladimir Oltean vg = br_vlan_group(br); 190922f67cdfSVladimir Oltean p = NULL; 191022f67cdfSVladimir Oltean } else { 191122f67cdfSVladimir Oltean p = br_port_get_rtnl(dev); 191222f67cdfSVladimir Oltean if (WARN_ON(!p)) 191322f67cdfSVladimir Oltean return -EINVAL; 191422f67cdfSVladimir Oltean vg = nbp_vlan_group(p); 191522f67cdfSVladimir Oltean br = p->br; 191622f67cdfSVladimir Oltean } 191722f67cdfSVladimir Oltean 191822f67cdfSVladimir Oltean if (!vg) 191922f67cdfSVladimir Oltean return 0; 192022f67cdfSVladimir Oltean 19217e8c1858SVladimir Oltean if (adding) 19227e8c1858SVladimir Oltean action = SWITCHDEV_PORT_OBJ_ADD; 19237e8c1858SVladimir Oltean else 19247e8c1858SVladimir Oltean action = SWITCHDEV_PORT_OBJ_DEL; 19257e8c1858SVladimir Oltean 192622f67cdfSVladimir Oltean pvid = br_get_pvid(vg); 192722f67cdfSVladimir Oltean 192822f67cdfSVladimir Oltean list_for_each_entry(v, &vg->vlan_list, vlist) { 192922f67cdfSVladimir Oltean struct switchdev_obj_port_vlan vlan = { 193022f67cdfSVladimir Oltean .obj.orig_dev = dev, 193122f67cdfSVladimir Oltean .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, 193222f67cdfSVladimir Oltean .flags = br_vlan_flags(v, pvid), 193322f67cdfSVladimir Oltean .vid = v->vid, 193422f67cdfSVladimir Oltean }; 193522f67cdfSVladimir Oltean 193622f67cdfSVladimir Oltean if (!br_vlan_should_use(v)) 193722f67cdfSVladimir Oltean continue; 193822f67cdfSVladimir Oltean 19397e8c1858SVladimir Oltean err = br_vlan_replay_one(nb, dev, &vlan, ctx, action, extack); 194022f67cdfSVladimir Oltean if (err) 194122f67cdfSVladimir Oltean return err; 194222f67cdfSVladimir Oltean } 194322f67cdfSVladimir Oltean 194422f67cdfSVladimir Oltean return err; 194522f67cdfSVladimir Oltean } 194622f67cdfSVladimir Oltean 19470ab55879SNikolay Aleksandrov /* check if v_curr can enter a range ending in range_end */ 1948a5d29ae2SNikolay Aleksandrov bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr, 19490ab55879SNikolay Aleksandrov const struct net_bridge_vlan *range_end) 19500ab55879SNikolay Aleksandrov { 19510ab55879SNikolay Aleksandrov return v_curr->vid - range_end->vid == 1 && 19527a53e718SNikolay Aleksandrov range_end->flags == v_curr->flags && 195399f7c5e0SNikolay Aleksandrov br_vlan_opts_eq_range(v_curr, range_end); 19540ab55879SNikolay Aleksandrov } 19550ab55879SNikolay Aleksandrov 19568dcea187SNikolay Aleksandrov static int br_vlan_dump_dev(const struct net_device *dev, 19578dcea187SNikolay Aleksandrov struct sk_buff *skb, 195856d09976SNikolay Aleksandrov struct netlink_callback *cb, 195956d09976SNikolay Aleksandrov u32 dump_flags) 19608dcea187SNikolay Aleksandrov { 19610ab55879SNikolay Aleksandrov struct net_bridge_vlan *v, *range_start = NULL, *range_end = NULL; 1962743a53d9SNikolay Aleksandrov bool dump_global = !!(dump_flags & BRIDGE_VLANDB_DUMPF_GLOBAL); 196356d09976SNikolay Aleksandrov bool dump_stats = !!(dump_flags & BRIDGE_VLANDB_DUMPF_STATS); 19648dcea187SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 19658dcea187SNikolay Aleksandrov int idx = 0, s_idx = cb->args[1]; 19668dcea187SNikolay Aleksandrov struct nlmsghdr *nlh = NULL; 19678dcea187SNikolay Aleksandrov struct net_bridge_port *p; 19688dcea187SNikolay Aleksandrov struct br_vlan_msg *bvm; 19698dcea187SNikolay Aleksandrov struct net_bridge *br; 19708dcea187SNikolay Aleksandrov int err = 0; 19718dcea187SNikolay Aleksandrov u16 pvid; 19728dcea187SNikolay Aleksandrov 19738dcea187SNikolay Aleksandrov if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) 19748dcea187SNikolay Aleksandrov return -EINVAL; 19758dcea187SNikolay Aleksandrov 19768dcea187SNikolay Aleksandrov if (netif_is_bridge_master(dev)) { 19778dcea187SNikolay Aleksandrov br = netdev_priv(dev); 19788dcea187SNikolay Aleksandrov vg = br_vlan_group_rcu(br); 19798dcea187SNikolay Aleksandrov p = NULL; 19808dcea187SNikolay Aleksandrov } else { 1981743a53d9SNikolay Aleksandrov /* global options are dumped only for bridge devices */ 1982743a53d9SNikolay Aleksandrov if (dump_global) 1983743a53d9SNikolay Aleksandrov return 0; 1984743a53d9SNikolay Aleksandrov 19858dcea187SNikolay Aleksandrov p = br_port_get_rcu(dev); 19868dcea187SNikolay Aleksandrov if (WARN_ON(!p)) 19878dcea187SNikolay Aleksandrov return -EINVAL; 19888dcea187SNikolay Aleksandrov vg = nbp_vlan_group_rcu(p); 19898dcea187SNikolay Aleksandrov br = p->br; 19908dcea187SNikolay Aleksandrov } 19918dcea187SNikolay Aleksandrov 19928dcea187SNikolay Aleksandrov if (!vg) 19938dcea187SNikolay Aleksandrov return 0; 19948dcea187SNikolay Aleksandrov 19958dcea187SNikolay Aleksandrov nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 19968dcea187SNikolay Aleksandrov RTM_NEWVLAN, sizeof(*bvm), NLM_F_MULTI); 19978dcea187SNikolay Aleksandrov if (!nlh) 19988dcea187SNikolay Aleksandrov return -EMSGSIZE; 19998dcea187SNikolay Aleksandrov bvm = nlmsg_data(nlh); 20008dcea187SNikolay Aleksandrov memset(bvm, 0, sizeof(*bvm)); 20018dcea187SNikolay Aleksandrov bvm->family = PF_BRIDGE; 20028dcea187SNikolay Aleksandrov bvm->ifindex = dev->ifindex; 20038dcea187SNikolay Aleksandrov pvid = br_get_pvid(vg); 20048dcea187SNikolay Aleksandrov 20050ab55879SNikolay Aleksandrov /* idx must stay at range's beginning until it is filled in */ 20068dcea187SNikolay Aleksandrov list_for_each_entry_rcu(v, &vg->vlan_list, vlist) { 2007743a53d9SNikolay Aleksandrov if (!dump_global && !br_vlan_should_use(v)) 20088dcea187SNikolay Aleksandrov continue; 20090ab55879SNikolay Aleksandrov if (idx < s_idx) { 20100ab55879SNikolay Aleksandrov idx++; 20110ab55879SNikolay Aleksandrov continue; 20120ab55879SNikolay Aleksandrov } 20130ab55879SNikolay Aleksandrov 20140ab55879SNikolay Aleksandrov if (!range_start) { 20150ab55879SNikolay Aleksandrov range_start = v; 20160ab55879SNikolay Aleksandrov range_end = v; 20170ab55879SNikolay Aleksandrov continue; 20180ab55879SNikolay Aleksandrov } 20190ab55879SNikolay Aleksandrov 2020743a53d9SNikolay Aleksandrov if (dump_global) { 2021743a53d9SNikolay Aleksandrov if (br_vlan_global_opts_can_enter_range(v, range_end)) 20226c4110d9SNikolay Aleksandrov goto update_end; 2023743a53d9SNikolay Aleksandrov if (!br_vlan_global_opts_fill(skb, range_start->vid, 2024743a53d9SNikolay Aleksandrov range_end->vid, 2025743a53d9SNikolay Aleksandrov range_start)) { 2026743a53d9SNikolay Aleksandrov err = -EMSGSIZE; 2027743a53d9SNikolay Aleksandrov break; 2028743a53d9SNikolay Aleksandrov } 2029743a53d9SNikolay Aleksandrov /* advance number of filled vlans */ 2030743a53d9SNikolay Aleksandrov idx += range_end->vid - range_start->vid + 1; 2031743a53d9SNikolay Aleksandrov 2032743a53d9SNikolay Aleksandrov range_start = v; 2033743a53d9SNikolay Aleksandrov } else if (dump_stats || v->vid == pvid || 203456d09976SNikolay Aleksandrov !br_vlan_can_enter_range(v, range_end)) { 203556d09976SNikolay Aleksandrov u16 vlan_flags = br_vlan_flags(range_start, pvid); 20360ab55879SNikolay Aleksandrov 20370ab55879SNikolay Aleksandrov if (!br_vlan_fill_vids(skb, range_start->vid, 20387a53e718SNikolay Aleksandrov range_end->vid, range_start, 203956d09976SNikolay Aleksandrov vlan_flags, dump_stats)) { 20408dcea187SNikolay Aleksandrov err = -EMSGSIZE; 20418dcea187SNikolay Aleksandrov break; 20428dcea187SNikolay Aleksandrov } 20430ab55879SNikolay Aleksandrov /* advance number of filled vlans */ 20440ab55879SNikolay Aleksandrov idx += range_end->vid - range_start->vid + 1; 20450ab55879SNikolay Aleksandrov 20460ab55879SNikolay Aleksandrov range_start = v; 20478dcea187SNikolay Aleksandrov } 20486c4110d9SNikolay Aleksandrov update_end: 20490ab55879SNikolay Aleksandrov range_end = v; 20500ab55879SNikolay Aleksandrov } 20510ab55879SNikolay Aleksandrov 20520ab55879SNikolay Aleksandrov /* err will be 0 and range_start will be set in 3 cases here: 20530ab55879SNikolay Aleksandrov * - first vlan (range_start == range_end) 20540ab55879SNikolay Aleksandrov * - last vlan (range_start == range_end, not in range) 20550ab55879SNikolay Aleksandrov * - last vlan range (range_start != range_end, in range) 20560ab55879SNikolay Aleksandrov */ 2057743a53d9SNikolay Aleksandrov if (!err && range_start) { 2058743a53d9SNikolay Aleksandrov if (dump_global && 2059743a53d9SNikolay Aleksandrov !br_vlan_global_opts_fill(skb, range_start->vid, 2060743a53d9SNikolay Aleksandrov range_end->vid, range_start)) 2061743a53d9SNikolay Aleksandrov err = -EMSGSIZE; 2062743a53d9SNikolay Aleksandrov else if (!dump_global && 2063743a53d9SNikolay Aleksandrov !br_vlan_fill_vids(skb, range_start->vid, 2064743a53d9SNikolay Aleksandrov range_end->vid, range_start, 2065743a53d9SNikolay Aleksandrov br_vlan_flags(range_start, pvid), 206656d09976SNikolay Aleksandrov dump_stats)) 20670ab55879SNikolay Aleksandrov err = -EMSGSIZE; 2068743a53d9SNikolay Aleksandrov } 20690ab55879SNikolay Aleksandrov 20700ab55879SNikolay Aleksandrov cb->args[1] = err ? idx : 0; 20710ab55879SNikolay Aleksandrov 20728dcea187SNikolay Aleksandrov nlmsg_end(skb, nlh); 20738dcea187SNikolay Aleksandrov 20748dcea187SNikolay Aleksandrov return err; 20758dcea187SNikolay Aleksandrov } 20768dcea187SNikolay Aleksandrov 207756d09976SNikolay Aleksandrov static const struct nla_policy br_vlan_db_dump_pol[BRIDGE_VLANDB_DUMP_MAX + 1] = { 207856d09976SNikolay Aleksandrov [BRIDGE_VLANDB_DUMP_FLAGS] = { .type = NLA_U32 }, 207956d09976SNikolay Aleksandrov }; 208056d09976SNikolay Aleksandrov 20818dcea187SNikolay Aleksandrov static int br_vlan_rtm_dump(struct sk_buff *skb, struct netlink_callback *cb) 20828dcea187SNikolay Aleksandrov { 208356d09976SNikolay Aleksandrov struct nlattr *dtb[BRIDGE_VLANDB_DUMP_MAX + 1]; 20848dcea187SNikolay Aleksandrov int idx = 0, err = 0, s_idx = cb->args[0]; 20858dcea187SNikolay Aleksandrov struct net *net = sock_net(skb->sk); 20868dcea187SNikolay Aleksandrov struct br_vlan_msg *bvm; 20878dcea187SNikolay Aleksandrov struct net_device *dev; 208856d09976SNikolay Aleksandrov u32 dump_flags = 0; 20898dcea187SNikolay Aleksandrov 209056d09976SNikolay Aleksandrov err = nlmsg_parse(cb->nlh, sizeof(*bvm), dtb, BRIDGE_VLANDB_DUMP_MAX, 209156d09976SNikolay Aleksandrov br_vlan_db_dump_pol, cb->extack); 20928dcea187SNikolay Aleksandrov if (err < 0) 20938dcea187SNikolay Aleksandrov return err; 20948dcea187SNikolay Aleksandrov 20958dcea187SNikolay Aleksandrov bvm = nlmsg_data(cb->nlh); 209656d09976SNikolay Aleksandrov if (dtb[BRIDGE_VLANDB_DUMP_FLAGS]) 209756d09976SNikolay Aleksandrov dump_flags = nla_get_u32(dtb[BRIDGE_VLANDB_DUMP_FLAGS]); 20988dcea187SNikolay Aleksandrov 20998dcea187SNikolay Aleksandrov rcu_read_lock(); 21008dcea187SNikolay Aleksandrov if (bvm->ifindex) { 21018dcea187SNikolay Aleksandrov dev = dev_get_by_index_rcu(net, bvm->ifindex); 21028dcea187SNikolay Aleksandrov if (!dev) { 21038dcea187SNikolay Aleksandrov err = -ENODEV; 21048dcea187SNikolay Aleksandrov goto out_err; 21058dcea187SNikolay Aleksandrov } 210656d09976SNikolay Aleksandrov err = br_vlan_dump_dev(dev, skb, cb, dump_flags); 21078dcea187SNikolay Aleksandrov if (err && err != -EMSGSIZE) 21088dcea187SNikolay Aleksandrov goto out_err; 21098dcea187SNikolay Aleksandrov } else { 21108dcea187SNikolay Aleksandrov for_each_netdev_rcu(net, dev) { 21118dcea187SNikolay Aleksandrov if (idx < s_idx) 21128dcea187SNikolay Aleksandrov goto skip; 21138dcea187SNikolay Aleksandrov 211456d09976SNikolay Aleksandrov err = br_vlan_dump_dev(dev, skb, cb, dump_flags); 21158dcea187SNikolay Aleksandrov if (err == -EMSGSIZE) 21168dcea187SNikolay Aleksandrov break; 21178dcea187SNikolay Aleksandrov skip: 21188dcea187SNikolay Aleksandrov idx++; 21198dcea187SNikolay Aleksandrov } 21208dcea187SNikolay Aleksandrov } 21218dcea187SNikolay Aleksandrov cb->args[0] = idx; 21228dcea187SNikolay Aleksandrov rcu_read_unlock(); 21238dcea187SNikolay Aleksandrov 21248dcea187SNikolay Aleksandrov return skb->len; 21258dcea187SNikolay Aleksandrov 21268dcea187SNikolay Aleksandrov out_err: 21278dcea187SNikolay Aleksandrov rcu_read_unlock(); 21288dcea187SNikolay Aleksandrov 21298dcea187SNikolay Aleksandrov return err; 21308dcea187SNikolay Aleksandrov } 21318dcea187SNikolay Aleksandrov 2132f26b2965SNikolay Aleksandrov static const struct nla_policy br_vlan_db_policy[BRIDGE_VLANDB_ENTRY_MAX + 1] = { 21338140860cSJohannes Berg [BRIDGE_VLANDB_ENTRY_INFO] = 21348140860cSJohannes Berg NLA_POLICY_EXACT_LEN(sizeof(struct bridge_vlan_info)), 21350ab55879SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_RANGE] = { .type = NLA_U16 }, 2136a580c76dSNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_STATE] = { .type = NLA_U8 }, 2137fa388f29SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_TUNNEL_INFO] = { .type = NLA_NESTED }, 21382796d846SNikolay Aleksandrov [BRIDGE_VLANDB_ENTRY_MCAST_ROUTER] = { .type = NLA_U8 }, 2139f26b2965SNikolay Aleksandrov }; 2140f26b2965SNikolay Aleksandrov 2141f26b2965SNikolay Aleksandrov static int br_vlan_rtm_process_one(struct net_device *dev, 2142f26b2965SNikolay Aleksandrov const struct nlattr *attr, 2143f26b2965SNikolay Aleksandrov int cmd, struct netlink_ext_ack *extack) 2144f26b2965SNikolay Aleksandrov { 21450ab55879SNikolay Aleksandrov struct bridge_vlan_info *vinfo, vrange_end, *vinfo_last = NULL; 2146f26b2965SNikolay Aleksandrov struct nlattr *tb[BRIDGE_VLANDB_ENTRY_MAX + 1]; 2147a5d29ae2SNikolay Aleksandrov bool changed = false, skip_processing = false; 2148f26b2965SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2149f26b2965SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2150f26b2965SNikolay Aleksandrov int err = 0, cmdmap = 0; 2151f26b2965SNikolay Aleksandrov struct net_bridge *br; 2152f26b2965SNikolay Aleksandrov 2153f26b2965SNikolay Aleksandrov if (netif_is_bridge_master(dev)) { 2154f26b2965SNikolay Aleksandrov br = netdev_priv(dev); 2155f26b2965SNikolay Aleksandrov vg = br_vlan_group(br); 2156f26b2965SNikolay Aleksandrov } else { 2157f26b2965SNikolay Aleksandrov p = br_port_get_rtnl(dev); 2158f26b2965SNikolay Aleksandrov if (WARN_ON(!p)) 2159f26b2965SNikolay Aleksandrov return -ENODEV; 2160f26b2965SNikolay Aleksandrov br = p->br; 2161f26b2965SNikolay Aleksandrov vg = nbp_vlan_group(p); 2162f26b2965SNikolay Aleksandrov } 2163f26b2965SNikolay Aleksandrov 2164f26b2965SNikolay Aleksandrov if (WARN_ON(!vg)) 2165f26b2965SNikolay Aleksandrov return -ENODEV; 2166f26b2965SNikolay Aleksandrov 2167f26b2965SNikolay Aleksandrov err = nla_parse_nested(tb, BRIDGE_VLANDB_ENTRY_MAX, attr, 2168f26b2965SNikolay Aleksandrov br_vlan_db_policy, extack); 2169f26b2965SNikolay Aleksandrov if (err) 2170f26b2965SNikolay Aleksandrov return err; 2171f26b2965SNikolay Aleksandrov 2172f26b2965SNikolay Aleksandrov if (!tb[BRIDGE_VLANDB_ENTRY_INFO]) { 2173f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry info"); 2174f26b2965SNikolay Aleksandrov return -EINVAL; 2175f26b2965SNikolay Aleksandrov } 21760ab55879SNikolay Aleksandrov memset(&vrange_end, 0, sizeof(vrange_end)); 2177f26b2965SNikolay Aleksandrov 2178f26b2965SNikolay Aleksandrov vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]); 2179f26b2965SNikolay Aleksandrov if (vinfo->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN | 2180f26b2965SNikolay Aleksandrov BRIDGE_VLAN_INFO_RANGE_END)) { 2181f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "Old-style vlan ranges are not allowed when using RTM vlan calls"); 2182f26b2965SNikolay Aleksandrov return -EINVAL; 2183f26b2965SNikolay Aleksandrov } 2184f26b2965SNikolay Aleksandrov if (!br_vlan_valid_id(vinfo->vid, extack)) 2185f26b2965SNikolay Aleksandrov return -EINVAL; 2186f26b2965SNikolay Aleksandrov 21870ab55879SNikolay Aleksandrov if (tb[BRIDGE_VLANDB_ENTRY_RANGE]) { 21880ab55879SNikolay Aleksandrov vrange_end.vid = nla_get_u16(tb[BRIDGE_VLANDB_ENTRY_RANGE]); 21890ab55879SNikolay Aleksandrov /* validate user-provided flags without RANGE_BEGIN */ 21900ab55879SNikolay Aleksandrov vrange_end.flags = BRIDGE_VLAN_INFO_RANGE_END | vinfo->flags; 21910ab55879SNikolay Aleksandrov vinfo->flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; 21920ab55879SNikolay Aleksandrov 21930ab55879SNikolay Aleksandrov /* vinfo_last is the range start, vinfo the range end */ 21940ab55879SNikolay Aleksandrov vinfo_last = vinfo; 21950ab55879SNikolay Aleksandrov vinfo = &vrange_end; 21960ab55879SNikolay Aleksandrov 21970ab55879SNikolay Aleksandrov if (!br_vlan_valid_id(vinfo->vid, extack) || 21980ab55879SNikolay Aleksandrov !br_vlan_valid_range(vinfo, vinfo_last, extack)) 21990ab55879SNikolay Aleksandrov return -EINVAL; 22000ab55879SNikolay Aleksandrov } 22010ab55879SNikolay Aleksandrov 2202f26b2965SNikolay Aleksandrov switch (cmd) { 2203f26b2965SNikolay Aleksandrov case RTM_NEWVLAN: 2204f26b2965SNikolay Aleksandrov cmdmap = RTM_SETLINK; 2205a5d29ae2SNikolay Aleksandrov skip_processing = !!(vinfo->flags & BRIDGE_VLAN_INFO_ONLY_OPTS); 2206f26b2965SNikolay Aleksandrov break; 2207adb3ce9bSNikolay Aleksandrov case RTM_DELVLAN: 2208adb3ce9bSNikolay Aleksandrov cmdmap = RTM_DELLINK; 2209adb3ce9bSNikolay Aleksandrov break; 2210f26b2965SNikolay Aleksandrov } 2211f26b2965SNikolay Aleksandrov 2212a5d29ae2SNikolay Aleksandrov if (!skip_processing) { 2213a5d29ae2SNikolay Aleksandrov struct bridge_vlan_info *tmp_last = vinfo_last; 2214a5d29ae2SNikolay Aleksandrov 2215a5d29ae2SNikolay Aleksandrov /* br_process_vlan_info may overwrite vinfo_last */ 2216a5d29ae2SNikolay Aleksandrov err = br_process_vlan_info(br, p, cmdmap, vinfo, &tmp_last, 2217a5d29ae2SNikolay Aleksandrov &changed, extack); 2218a5d29ae2SNikolay Aleksandrov 2219a5d29ae2SNikolay Aleksandrov /* notify first if anything changed */ 2220f26b2965SNikolay Aleksandrov if (changed) 2221f26b2965SNikolay Aleksandrov br_ifinfo_notify(cmdmap, br, p); 2222f26b2965SNikolay Aleksandrov 2223a5d29ae2SNikolay Aleksandrov if (err) 2224a5d29ae2SNikolay Aleksandrov return err; 2225a5d29ae2SNikolay Aleksandrov } 2226a5d29ae2SNikolay Aleksandrov 2227a5d29ae2SNikolay Aleksandrov /* deal with options */ 2228a5d29ae2SNikolay Aleksandrov if (cmd == RTM_NEWVLAN) { 2229a5d29ae2SNikolay Aleksandrov struct net_bridge_vlan *range_start, *range_end; 2230a5d29ae2SNikolay Aleksandrov 2231a5d29ae2SNikolay Aleksandrov if (vinfo_last) { 2232a5d29ae2SNikolay Aleksandrov range_start = br_vlan_find(vg, vinfo_last->vid); 2233a5d29ae2SNikolay Aleksandrov range_end = br_vlan_find(vg, vinfo->vid); 2234a5d29ae2SNikolay Aleksandrov } else { 2235a5d29ae2SNikolay Aleksandrov range_start = br_vlan_find(vg, vinfo->vid); 2236a5d29ae2SNikolay Aleksandrov range_end = range_start; 2237a5d29ae2SNikolay Aleksandrov } 2238a5d29ae2SNikolay Aleksandrov 2239a5d29ae2SNikolay Aleksandrov err = br_vlan_process_options(br, p, range_start, range_end, 2240a5d29ae2SNikolay Aleksandrov tb, extack); 2241a5d29ae2SNikolay Aleksandrov } 2242a5d29ae2SNikolay Aleksandrov 2243f26b2965SNikolay Aleksandrov return err; 2244f26b2965SNikolay Aleksandrov } 2245f26b2965SNikolay Aleksandrov 2246f26b2965SNikolay Aleksandrov static int br_vlan_rtm_process(struct sk_buff *skb, struct nlmsghdr *nlh, 2247f26b2965SNikolay Aleksandrov struct netlink_ext_ack *extack) 2248f26b2965SNikolay Aleksandrov { 2249f26b2965SNikolay Aleksandrov struct net *net = sock_net(skb->sk); 2250f26b2965SNikolay Aleksandrov struct br_vlan_msg *bvm; 2251f26b2965SNikolay Aleksandrov struct net_device *dev; 2252f26b2965SNikolay Aleksandrov struct nlattr *attr; 2253f26b2965SNikolay Aleksandrov int err, vlans = 0; 2254f26b2965SNikolay Aleksandrov int rem; 2255f26b2965SNikolay Aleksandrov 2256f26b2965SNikolay Aleksandrov /* this should validate the header and check for remaining bytes */ 2257f26b2965SNikolay Aleksandrov err = nlmsg_parse(nlh, sizeof(*bvm), NULL, BRIDGE_VLANDB_MAX, NULL, 2258f26b2965SNikolay Aleksandrov extack); 2259f26b2965SNikolay Aleksandrov if (err < 0) 2260f26b2965SNikolay Aleksandrov return err; 2261f26b2965SNikolay Aleksandrov 2262f26b2965SNikolay Aleksandrov bvm = nlmsg_data(nlh); 2263f26b2965SNikolay Aleksandrov dev = __dev_get_by_index(net, bvm->ifindex); 2264f26b2965SNikolay Aleksandrov if (!dev) 2265f26b2965SNikolay Aleksandrov return -ENODEV; 2266f26b2965SNikolay Aleksandrov 2267f26b2965SNikolay Aleksandrov if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) { 2268f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "The device is not a valid bridge or bridge port"); 2269f26b2965SNikolay Aleksandrov return -EINVAL; 2270f26b2965SNikolay Aleksandrov } 2271f26b2965SNikolay Aleksandrov 2272f26b2965SNikolay Aleksandrov nlmsg_for_each_attr(attr, nlh, sizeof(*bvm), rem) { 227347ecd2dbSNikolay Aleksandrov switch (nla_type(attr)) { 227447ecd2dbSNikolay Aleksandrov case BRIDGE_VLANDB_ENTRY: 227547ecd2dbSNikolay Aleksandrov err = br_vlan_rtm_process_one(dev, attr, 227647ecd2dbSNikolay Aleksandrov nlh->nlmsg_type, 227747ecd2dbSNikolay Aleksandrov extack); 227847ecd2dbSNikolay Aleksandrov break; 227947ecd2dbSNikolay Aleksandrov case BRIDGE_VLANDB_GLOBAL_OPTIONS: 228047ecd2dbSNikolay Aleksandrov err = br_vlan_rtm_process_global_options(dev, attr, 228147ecd2dbSNikolay Aleksandrov nlh->nlmsg_type, 228247ecd2dbSNikolay Aleksandrov extack); 228347ecd2dbSNikolay Aleksandrov break; 228447ecd2dbSNikolay Aleksandrov default: 2285f26b2965SNikolay Aleksandrov continue; 228647ecd2dbSNikolay Aleksandrov } 2287f26b2965SNikolay Aleksandrov 2288f26b2965SNikolay Aleksandrov vlans++; 2289f26b2965SNikolay Aleksandrov if (err) 2290f26b2965SNikolay Aleksandrov break; 2291f26b2965SNikolay Aleksandrov } 2292f26b2965SNikolay Aleksandrov if (!vlans) { 2293f26b2965SNikolay Aleksandrov NL_SET_ERR_MSG_MOD(extack, "No vlans found to process"); 2294f26b2965SNikolay Aleksandrov err = -EINVAL; 2295f26b2965SNikolay Aleksandrov } 2296f26b2965SNikolay Aleksandrov 2297f26b2965SNikolay Aleksandrov return err; 2298f26b2965SNikolay Aleksandrov } 2299f26b2965SNikolay Aleksandrov 23008dcea187SNikolay Aleksandrov void br_vlan_rtnl_init(void) 23018dcea187SNikolay Aleksandrov { 23028dcea187SNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_GETVLAN, NULL, 23038dcea187SNikolay Aleksandrov br_vlan_rtm_dump, 0); 2304f26b2965SNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_NEWVLAN, 2305f26b2965SNikolay Aleksandrov br_vlan_rtm_process, NULL, 0); 2306adb3ce9bSNikolay Aleksandrov rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_DELVLAN, 2307adb3ce9bSNikolay Aleksandrov br_vlan_rtm_process, NULL, 0); 23088dcea187SNikolay Aleksandrov } 23098dcea187SNikolay Aleksandrov 23108dcea187SNikolay Aleksandrov void br_vlan_rtnl_uninit(void) 23118dcea187SNikolay Aleksandrov { 23128dcea187SNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_GETVLAN); 2313f26b2965SNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_NEWVLAN); 2314adb3ce9bSNikolay Aleksandrov rtnl_unregister(PF_BRIDGE, RTM_DELVLAN); 23158dcea187SNikolay Aleksandrov } 2316