1243a2e63SVlad Yasevich #include <linux/kernel.h> 2243a2e63SVlad Yasevich #include <linux/netdevice.h> 3243a2e63SVlad Yasevich #include <linux/rtnetlink.h> 4243a2e63SVlad Yasevich #include <linux/slab.h> 57f109539SScott Feldman #include <net/switchdev.h> 6243a2e63SVlad Yasevich 7243a2e63SVlad Yasevich #include "br_private.h" 8efa5356bSRoopa Prabhu #include "br_private_tunnel.h" 9243a2e63SVlad Yasevich 102594e906SNikolay Aleksandrov static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg, 112594e906SNikolay Aleksandrov const void *ptr) 12552406c4SVlad Yasevich { 132594e906SNikolay Aleksandrov const struct net_bridge_vlan *vle = ptr; 142594e906SNikolay Aleksandrov u16 vid = *(u16 *)arg->key; 152594e906SNikolay Aleksandrov 162594e906SNikolay Aleksandrov return vle->vid != vid; 172594e906SNikolay Aleksandrov } 182594e906SNikolay Aleksandrov 192594e906SNikolay Aleksandrov static const struct rhashtable_params br_vlan_rht_params = { 202594e906SNikolay Aleksandrov .head_offset = offsetof(struct net_bridge_vlan, vnode), 212594e906SNikolay Aleksandrov .key_offset = offsetof(struct net_bridge_vlan, vid), 222594e906SNikolay Aleksandrov .key_len = sizeof(u16), 238af78b64SNikolay Aleksandrov .nelem_hint = 3, 242594e906SNikolay Aleksandrov .max_size = VLAN_N_VID, 252594e906SNikolay Aleksandrov .obj_cmpfn = br_vlan_cmp, 262594e906SNikolay Aleksandrov .automatic_shrinking = true, 272594e906SNikolay Aleksandrov }; 282594e906SNikolay Aleksandrov 292594e906SNikolay Aleksandrov static struct net_bridge_vlan *br_vlan_lookup(struct rhashtable *tbl, u16 vid) 302594e906SNikolay Aleksandrov { 312594e906SNikolay Aleksandrov return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params); 322594e906SNikolay Aleksandrov } 332594e906SNikolay Aleksandrov 34f418af63SNikolay Aleksandrov static bool __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid) 352594e906SNikolay Aleksandrov { 3677751ee8SNikolay Aleksandrov if (vg->pvid == vid) 37f418af63SNikolay Aleksandrov return false; 38552406c4SVlad Yasevich 39552406c4SVlad Yasevich smp_wmb(); 4077751ee8SNikolay Aleksandrov vg->pvid = vid; 41f418af63SNikolay Aleksandrov 42f418af63SNikolay Aleksandrov return true; 43552406c4SVlad Yasevich } 44552406c4SVlad Yasevich 45f418af63SNikolay Aleksandrov static bool __vlan_delete_pvid(struct net_bridge_vlan_group *vg, u16 vid) 46552406c4SVlad Yasevich { 4777751ee8SNikolay Aleksandrov if (vg->pvid != vid) 48f418af63SNikolay Aleksandrov return false; 49552406c4SVlad Yasevich 50552406c4SVlad Yasevich smp_wmb(); 5177751ee8SNikolay Aleksandrov vg->pvid = 0; 52f418af63SNikolay Aleksandrov 53f418af63SNikolay Aleksandrov return true; 54552406c4SVlad Yasevich } 55552406c4SVlad Yasevich 56f418af63SNikolay Aleksandrov /* return true if anything changed, false otherwise */ 57f418af63SNikolay Aleksandrov static bool __vlan_add_flags(struct net_bridge_vlan *v, u16 flags) 5835e03f3aSVlad Yasevich { 5977751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 60f418af63SNikolay Aleksandrov u16 old_flags = v->flags; 61f418af63SNikolay Aleksandrov bool ret; 6277751ee8SNikolay Aleksandrov 632594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) 64907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 65635126b7SVlad Yasevich else 66907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 6777751ee8SNikolay Aleksandrov 6877751ee8SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_PVID) 69f418af63SNikolay Aleksandrov ret = __vlan_add_pvid(vg, v->vid); 702594e906SNikolay Aleksandrov else 71f418af63SNikolay Aleksandrov ret = __vlan_delete_pvid(vg, v->vid); 7235e03f3aSVlad Yasevich 7335e03f3aSVlad Yasevich if (flags & BRIDGE_VLAN_INFO_UNTAGGED) 742594e906SNikolay Aleksandrov v->flags |= BRIDGE_VLAN_INFO_UNTAGGED; 75635126b7SVlad Yasevich else 762594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_UNTAGGED; 77f418af63SNikolay Aleksandrov 78f418af63SNikolay Aleksandrov return ret || !!(old_flags ^ v->flags); 7935e03f3aSVlad Yasevich } 8035e03f3aSVlad Yasevich 817f109539SScott Feldman static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, 8227973793SIdo Schimmel struct net_bridge_vlan *v, u16 flags, 8327973793SIdo Schimmel struct netlink_ext_ack *extack) 847f109539SScott Feldman { 850944d6b5SJiri Pirko int err; 867f109539SScott Feldman 870944d6b5SJiri Pirko /* Try switchdev op first. In case it is not supported, fallback to 880944d6b5SJiri Pirko * 8021q add. 890944d6b5SJiri Pirko */ 9027973793SIdo Schimmel err = br_switchdev_port_vlan_add(dev, v->vid, flags, extack); 917f109539SScott Feldman if (err == -EOPNOTSUPP) 9227973793SIdo Schimmel return vlan_vid_add(dev, br->vlan_proto, v->vid); 9327973793SIdo Schimmel v->priv_flags |= BR_VLFLAG_ADDED_BY_SWITCHDEV; 947f109539SScott Feldman return err; 957f109539SScott Feldman } 967f109539SScott Feldman 972594e906SNikolay Aleksandrov static void __vlan_add_list(struct net_bridge_vlan *v) 98243a2e63SVlad Yasevich { 99907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 1002594e906SNikolay Aleksandrov struct list_head *headp, *hpos; 1012594e906SNikolay Aleksandrov struct net_bridge_vlan *vent; 102243a2e63SVlad Yasevich 103907b1e6eSNikolay Aleksandrov if (br_vlan_is_master(v)) 104907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 105907b1e6eSNikolay Aleksandrov else 106907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 107907b1e6eSNikolay Aleksandrov 108907b1e6eSNikolay Aleksandrov headp = &vg->vlan_list; 1092594e906SNikolay Aleksandrov list_for_each_prev(hpos, headp) { 1102594e906SNikolay Aleksandrov vent = list_entry(hpos, struct net_bridge_vlan, vlist); 1112594e906SNikolay Aleksandrov if (v->vid < vent->vid) 1122594e906SNikolay Aleksandrov continue; 1132594e906SNikolay Aleksandrov else 1142594e906SNikolay Aleksandrov break; 1152594e906SNikolay Aleksandrov } 116586c2b57SNikolay Aleksandrov list_add_rcu(&v->vlist, hpos); 117552406c4SVlad Yasevich } 118243a2e63SVlad Yasevich 1192594e906SNikolay Aleksandrov static void __vlan_del_list(struct net_bridge_vlan *v) 1202594e906SNikolay Aleksandrov { 121586c2b57SNikolay Aleksandrov list_del_rcu(&v->vlist); 122243a2e63SVlad Yasevich } 123243a2e63SVlad Yasevich 124bf361ad3SVivien Didelot static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, 12527973793SIdo Schimmel const struct net_bridge_vlan *v) 1267f109539SScott Feldman { 1270944d6b5SJiri Pirko int err; 1287f109539SScott Feldman 1290944d6b5SJiri Pirko /* Try switchdev op first. In case it is not supported, fallback to 1300944d6b5SJiri Pirko * 8021q del. 1310944d6b5SJiri Pirko */ 13227973793SIdo Schimmel err = br_switchdev_port_vlan_del(dev, v->vid); 13327973793SIdo Schimmel if (!(v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV)) 13427973793SIdo Schimmel vlan_vid_del(dev, br->vlan_proto, v->vid); 13527973793SIdo Schimmel return err == -EOPNOTSUPP ? 0 : err; 1367f109539SScott Feldman } 1377f109539SScott Feldman 138f8ed289fSNikolay Aleksandrov /* Returns a master vlan, if it didn't exist it gets created. In all cases a 139f8ed289fSNikolay Aleksandrov * a reference is taken to the master vlan before returning. 140f8ed289fSNikolay Aleksandrov */ 141169327d5SPetr Machata static struct net_bridge_vlan * 142169327d5SPetr Machata br_vlan_get_master(struct net_bridge *br, u16 vid, 143169327d5SPetr Machata struct netlink_ext_ack *extack) 144f8ed289fSNikolay Aleksandrov { 145907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 146f8ed289fSNikolay Aleksandrov struct net_bridge_vlan *masterv; 147f8ed289fSNikolay Aleksandrov 148907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 149907b1e6eSNikolay Aleksandrov masterv = br_vlan_find(vg, vid); 150f8ed289fSNikolay Aleksandrov if (!masterv) { 151f418af63SNikolay Aleksandrov bool changed; 152f418af63SNikolay Aleksandrov 153f8ed289fSNikolay Aleksandrov /* missing global ctx, create it now */ 154169327d5SPetr Machata if (br_vlan_add(br, vid, 0, &changed, extack)) 155f8ed289fSNikolay Aleksandrov return NULL; 156907b1e6eSNikolay Aleksandrov masterv = br_vlan_find(vg, vid); 157f8ed289fSNikolay Aleksandrov if (WARN_ON(!masterv)) 158f8ed289fSNikolay Aleksandrov return NULL; 1590e5a82efSIdo Schimmel refcount_set(&masterv->refcnt, 1); 1600e5a82efSIdo Schimmel return masterv; 161f8ed289fSNikolay Aleksandrov } 16225127759SReshetova, Elena refcount_inc(&masterv->refcnt); 163f8ed289fSNikolay Aleksandrov 164f8ed289fSNikolay Aleksandrov return masterv; 165f8ed289fSNikolay Aleksandrov } 166f8ed289fSNikolay Aleksandrov 1676dada9b1SNikolay Aleksandrov static void br_master_vlan_rcu_free(struct rcu_head *rcu) 1686dada9b1SNikolay Aleksandrov { 1696dada9b1SNikolay Aleksandrov struct net_bridge_vlan *v; 1706dada9b1SNikolay Aleksandrov 1716dada9b1SNikolay Aleksandrov v = container_of(rcu, struct net_bridge_vlan, rcu); 1726dada9b1SNikolay Aleksandrov WARN_ON(!br_vlan_is_master(v)); 1736dada9b1SNikolay Aleksandrov free_percpu(v->stats); 1746dada9b1SNikolay Aleksandrov v->stats = NULL; 1756dada9b1SNikolay Aleksandrov kfree(v); 1766dada9b1SNikolay Aleksandrov } 1776dada9b1SNikolay Aleksandrov 178f8ed289fSNikolay Aleksandrov static void br_vlan_put_master(struct net_bridge_vlan *masterv) 179f8ed289fSNikolay Aleksandrov { 180907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 181907b1e6eSNikolay Aleksandrov 182f8ed289fSNikolay Aleksandrov if (!br_vlan_is_master(masterv)) 183f8ed289fSNikolay Aleksandrov return; 184f8ed289fSNikolay Aleksandrov 185907b1e6eSNikolay Aleksandrov vg = br_vlan_group(masterv->br); 18625127759SReshetova, Elena if (refcount_dec_and_test(&masterv->refcnt)) { 187907b1e6eSNikolay Aleksandrov rhashtable_remove_fast(&vg->vlan_hash, 188f8ed289fSNikolay Aleksandrov &masterv->vnode, br_vlan_rht_params); 189f8ed289fSNikolay Aleksandrov __vlan_del_list(masterv); 1906dada9b1SNikolay Aleksandrov call_rcu(&masterv->rcu, br_master_vlan_rcu_free); 191f8ed289fSNikolay Aleksandrov } 192f8ed289fSNikolay Aleksandrov } 193f8ed289fSNikolay Aleksandrov 1949163a0fcSNikolay Aleksandrov static void nbp_vlan_rcu_free(struct rcu_head *rcu) 1959163a0fcSNikolay Aleksandrov { 1969163a0fcSNikolay Aleksandrov struct net_bridge_vlan *v; 1979163a0fcSNikolay Aleksandrov 1989163a0fcSNikolay Aleksandrov v = container_of(rcu, struct net_bridge_vlan, rcu); 1999163a0fcSNikolay Aleksandrov WARN_ON(br_vlan_is_master(v)); 2009163a0fcSNikolay Aleksandrov /* if we had per-port stats configured then free them here */ 2019d332e69SNikolay Aleksandrov if (v->priv_flags & BR_VLFLAG_PER_PORT_STATS) 2029163a0fcSNikolay Aleksandrov free_percpu(v->stats); 2039163a0fcSNikolay Aleksandrov v->stats = NULL; 2049163a0fcSNikolay Aleksandrov kfree(v); 2059163a0fcSNikolay Aleksandrov } 2069163a0fcSNikolay Aleksandrov 2072594e906SNikolay Aleksandrov /* This is the shared VLAN add function which works for both ports and bridge 2082594e906SNikolay Aleksandrov * devices. There are four possible calls to this function in terms of the 2092594e906SNikolay Aleksandrov * vlan entry type: 2102594e906SNikolay Aleksandrov * 1. vlan is being added on a port (no master flags, global entry exists) 211ddd611d3SIdo Schimmel * 2. vlan is being added on a bridge (both master and brentry flags) 2122594e906SNikolay Aleksandrov * 3. vlan is being added on a port, but a global entry didn't exist which 213ddd611d3SIdo Schimmel * is being created right now (master flag set, brentry flag unset), the 2142594e906SNikolay Aleksandrov * global entry is used for global per-vlan features, but not for filtering 215ddd611d3SIdo Schimmel * 4. same as 3 but with both master and brentry flags set so the entry 2162594e906SNikolay Aleksandrov * will be used for filtering in both the port and the bridge 2172594e906SNikolay Aleksandrov */ 218169327d5SPetr Machata static int __vlan_add(struct net_bridge_vlan *v, u16 flags, 219169327d5SPetr Machata struct netlink_ext_ack *extack) 220243a2e63SVlad Yasevich { 2212594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = NULL; 2222594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 2236be144f6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 2242594e906SNikolay Aleksandrov struct net_device *dev; 2252594e906SNikolay Aleksandrov struct net_bridge *br; 226bf361ad3SVivien Didelot int err; 227bf361ad3SVivien Didelot 2282594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 2292594e906SNikolay Aleksandrov br = v->br; 2302594e906SNikolay Aleksandrov dev = br->dev; 231907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 2322594e906SNikolay Aleksandrov } else { 2332594e906SNikolay Aleksandrov p = v->port; 2342594e906SNikolay Aleksandrov br = p->br; 2352594e906SNikolay Aleksandrov dev = p->dev; 236907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 2372594e906SNikolay Aleksandrov } 2382594e906SNikolay Aleksandrov 2392594e906SNikolay Aleksandrov if (p) { 2402594e906SNikolay Aleksandrov /* Add VLAN to the device filter if it is supported. 2412594e906SNikolay Aleksandrov * This ensures tagged traffic enters the bridge when 2422594e906SNikolay Aleksandrov * promiscuous mode is disabled by br_manage_promisc(). 2432594e906SNikolay Aleksandrov */ 24427973793SIdo Schimmel err = __vlan_vid_add(dev, br, v, flags, extack); 245bf361ad3SVivien Didelot if (err) 2462594e906SNikolay Aleksandrov goto out; 2472594e906SNikolay Aleksandrov 2482594e906SNikolay Aleksandrov /* need to work on the master vlan too */ 2492594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_MASTER) { 250f418af63SNikolay Aleksandrov bool changed; 251f418af63SNikolay Aleksandrov 252f418af63SNikolay Aleksandrov err = br_vlan_add(br, v->vid, 253f418af63SNikolay Aleksandrov flags | BRIDGE_VLAN_INFO_BRENTRY, 254169327d5SPetr Machata &changed, extack); 2552594e906SNikolay Aleksandrov if (err) 2562594e906SNikolay Aleksandrov goto out_filt; 2572594e906SNikolay Aleksandrov } 2582594e906SNikolay Aleksandrov 259169327d5SPetr Machata masterv = br_vlan_get_master(br, v->vid, extack); 260f8ed289fSNikolay Aleksandrov if (!masterv) 2612594e906SNikolay Aleksandrov goto out_filt; 2622594e906SNikolay Aleksandrov v->brvlan = masterv; 2639163a0fcSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)) { 2649163a0fcSNikolay Aleksandrov v->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats); 2659163a0fcSNikolay Aleksandrov if (!v->stats) { 2669163a0fcSNikolay Aleksandrov err = -ENOMEM; 2679163a0fcSNikolay Aleksandrov goto out_filt; 2689163a0fcSNikolay Aleksandrov } 2699d332e69SNikolay Aleksandrov v->priv_flags |= BR_VLFLAG_PER_PORT_STATS; 2709163a0fcSNikolay Aleksandrov } else { 2716dada9b1SNikolay Aleksandrov v->stats = masterv->stats; 2729163a0fcSNikolay Aleksandrov } 2739c86ce2cSPetr Machata } else { 274169327d5SPetr Machata err = br_switchdev_port_vlan_add(dev, v->vid, flags, extack); 2759c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 2769c86ce2cSPetr Machata goto out; 2772594e906SNikolay Aleksandrov } 2782594e906SNikolay Aleksandrov 2796be144f6SNikolay Aleksandrov /* Add the dev mac and count the vlan only if it's usable */ 2802594e906SNikolay Aleksandrov if (br_vlan_should_use(v)) { 2812594e906SNikolay Aleksandrov err = br_fdb_insert(br, p, dev->dev_addr, v->vid); 2822594e906SNikolay Aleksandrov if (err) { 2832594e906SNikolay Aleksandrov br_err(br, "failed insert local address into bridge forwarding table\n"); 2842594e906SNikolay Aleksandrov goto out_filt; 2852594e906SNikolay Aleksandrov } 2866be144f6SNikolay Aleksandrov vg->num_vlans++; 2872594e906SNikolay Aleksandrov } 2882594e906SNikolay Aleksandrov 2896be144f6SNikolay Aleksandrov err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode, 2906be144f6SNikolay Aleksandrov br_vlan_rht_params); 2912594e906SNikolay Aleksandrov if (err) 2922594e906SNikolay Aleksandrov goto out_fdb_insert; 2932594e906SNikolay Aleksandrov 2942594e906SNikolay Aleksandrov __vlan_add_list(v); 2952594e906SNikolay Aleksandrov __vlan_add_flags(v, flags); 2962594e906SNikolay Aleksandrov out: 2972594e906SNikolay Aleksandrov return err; 2982594e906SNikolay Aleksandrov 2992594e906SNikolay Aleksandrov out_fdb_insert: 3006be144f6SNikolay Aleksandrov if (br_vlan_should_use(v)) { 3016be144f6SNikolay Aleksandrov br_fdb_find_delete_local(br, p, dev->dev_addr, v->vid); 3026be144f6SNikolay Aleksandrov vg->num_vlans--; 3036be144f6SNikolay Aleksandrov } 3042594e906SNikolay Aleksandrov 3052594e906SNikolay Aleksandrov out_filt: 3062594e906SNikolay Aleksandrov if (p) { 30727973793SIdo Schimmel __vlan_vid_del(dev, br, v); 3082594e906SNikolay Aleksandrov if (masterv) { 3091a3aea25SLi RongQing if (v->stats && masterv->stats != v->stats) 3101a3aea25SLi RongQing free_percpu(v->stats); 3111a3aea25SLi RongQing v->stats = NULL; 3121a3aea25SLi RongQing 313f8ed289fSNikolay Aleksandrov br_vlan_put_master(masterv); 3142594e906SNikolay Aleksandrov v->brvlan = NULL; 3152594e906SNikolay Aleksandrov } 3169c86ce2cSPetr Machata } else { 3179c86ce2cSPetr Machata br_switchdev_port_vlan_del(dev, v->vid); 3182594e906SNikolay Aleksandrov } 3192594e906SNikolay Aleksandrov 3202594e906SNikolay Aleksandrov goto out; 3212594e906SNikolay Aleksandrov } 3222594e906SNikolay Aleksandrov 3232594e906SNikolay Aleksandrov static int __vlan_del(struct net_bridge_vlan *v) 3242594e906SNikolay Aleksandrov { 3252594e906SNikolay Aleksandrov struct net_bridge_vlan *masterv = v; 32677751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 3272594e906SNikolay Aleksandrov struct net_bridge_port *p = NULL; 3282594e906SNikolay Aleksandrov int err = 0; 3292594e906SNikolay Aleksandrov 3302594e906SNikolay Aleksandrov if (br_vlan_is_master(v)) { 331907b1e6eSNikolay Aleksandrov vg = br_vlan_group(v->br); 3322594e906SNikolay Aleksandrov } else { 3332594e906SNikolay Aleksandrov p = v->port; 334907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(v->port); 3352594e906SNikolay Aleksandrov masterv = v->brvlan; 3362594e906SNikolay Aleksandrov } 3372594e906SNikolay Aleksandrov 33877751ee8SNikolay Aleksandrov __vlan_delete_pvid(vg, v->vid); 3392594e906SNikolay Aleksandrov if (p) { 34027973793SIdo Schimmel err = __vlan_vid_del(p->dev, p->br, v); 3412594e906SNikolay Aleksandrov if (err) 3422594e906SNikolay Aleksandrov goto out; 3439c86ce2cSPetr Machata } else { 3449c86ce2cSPetr Machata err = br_switchdev_port_vlan_del(v->br->dev, v->vid); 3459c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 3469c86ce2cSPetr Machata goto out; 3479c86ce2cSPetr Machata err = 0; 3482594e906SNikolay Aleksandrov } 3492594e906SNikolay Aleksandrov 3506be144f6SNikolay Aleksandrov if (br_vlan_should_use(v)) { 3512594e906SNikolay Aleksandrov v->flags &= ~BRIDGE_VLAN_INFO_BRENTRY; 3526be144f6SNikolay Aleksandrov vg->num_vlans--; 3532594e906SNikolay Aleksandrov } 3542594e906SNikolay Aleksandrov 3552594e906SNikolay Aleksandrov if (masterv != v) { 356efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 35777751ee8SNikolay Aleksandrov rhashtable_remove_fast(&vg->vlan_hash, &v->vnode, 35877751ee8SNikolay Aleksandrov br_vlan_rht_params); 3592594e906SNikolay Aleksandrov __vlan_del_list(v); 3609163a0fcSNikolay Aleksandrov call_rcu(&v->rcu, nbp_vlan_rcu_free); 3612594e906SNikolay Aleksandrov } 3622594e906SNikolay Aleksandrov 363f8ed289fSNikolay Aleksandrov br_vlan_put_master(masterv); 3642594e906SNikolay Aleksandrov out: 365bf361ad3SVivien Didelot return err; 3668580e211SToshiaki Makita } 367243a2e63SVlad Yasevich 368f409d0edSNikolay Aleksandrov static void __vlan_group_free(struct net_bridge_vlan_group *vg) 369f409d0edSNikolay Aleksandrov { 370f409d0edSNikolay Aleksandrov WARN_ON(!list_empty(&vg->vlan_list)); 371f409d0edSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 372efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 373f409d0edSNikolay Aleksandrov kfree(vg); 374f409d0edSNikolay Aleksandrov } 375f409d0edSNikolay Aleksandrov 376f409d0edSNikolay Aleksandrov static void __vlan_flush(struct net_bridge_vlan_group *vg) 377243a2e63SVlad Yasevich { 3782594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan, *tmp; 3792594e906SNikolay Aleksandrov 380f409d0edSNikolay Aleksandrov __vlan_delete_pvid(vg, vg->pvid); 381f409d0edSNikolay Aleksandrov list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) 3822594e906SNikolay Aleksandrov __vlan_del(vlan); 383243a2e63SVlad Yasevich } 384243a2e63SVlad Yasevich 38578851988SVlad Yasevich struct sk_buff *br_handle_vlan(struct net_bridge *br, 38611538d03SRoopa Prabhu const struct net_bridge_port *p, 3872594e906SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 388a37b85c9SVlad Yasevich struct sk_buff *skb) 389a37b85c9SVlad Yasevich { 3906dada9b1SNikolay Aleksandrov struct br_vlan_stats *stats; 3912594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 392a37b85c9SVlad Yasevich u16 vid; 393a37b85c9SVlad Yasevich 39420adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 39520adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 39678851988SVlad Yasevich goto out; 39778851988SVlad Yasevich 3982594e906SNikolay Aleksandrov /* At this point, we know that the frame was filtered and contains 3992594e906SNikolay Aleksandrov * a valid vlan id. If the vlan id has untagged flag set, 4002594e906SNikolay Aleksandrov * send untagged; otherwise, send tagged. 4012594e906SNikolay Aleksandrov */ 4022594e906SNikolay Aleksandrov br_vlan_get_tag(skb, &vid); 4032594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 4042594e906SNikolay Aleksandrov /* Vlan entry must be configured at this point. The 405fc92f745SVlad Yasevich * only exception is the bridge is set in promisc mode and the 406fc92f745SVlad Yasevich * packet is destined for the bridge device. In this case 407fc92f745SVlad Yasevich * pass the packet as is. 408fc92f745SVlad Yasevich */ 4092594e906SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) { 410fc92f745SVlad Yasevich if ((br->dev->flags & IFF_PROMISC) && skb->dev == br->dev) { 411fc92f745SVlad Yasevich goto out; 412fc92f745SVlad Yasevich } else { 413fc92f745SVlad Yasevich kfree_skb(skb); 414fc92f745SVlad Yasevich return NULL; 415fc92f745SVlad Yasevich } 416fc92f745SVlad Yasevich } 417ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 4186dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 4196dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 4206dada9b1SNikolay Aleksandrov stats->tx_bytes += skb->len; 4216dada9b1SNikolay Aleksandrov stats->tx_packets++; 4226dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 4236dada9b1SNikolay Aleksandrov } 4246dada9b1SNikolay Aleksandrov 4252594e906SNikolay Aleksandrov if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED) 4265978f8a9SMichał Mirosław __vlan_hwaccel_clear_tag(skb); 42711538d03SRoopa Prabhu 42811538d03SRoopa Prabhu if (p && (p->flags & BR_VLAN_TUNNEL) && 42911538d03SRoopa Prabhu br_handle_egress_vlan_tunnel(skb, v)) { 43011538d03SRoopa Prabhu kfree_skb(skb); 43111538d03SRoopa Prabhu return NULL; 43211538d03SRoopa Prabhu } 43378851988SVlad Yasevich out: 43478851988SVlad Yasevich return skb; 43578851988SVlad Yasevich } 43678851988SVlad Yasevich 43778851988SVlad Yasevich /* Called under RCU */ 4386dada9b1SNikolay Aleksandrov static bool __allowed_ingress(const struct net_bridge *br, 4396dada9b1SNikolay Aleksandrov struct net_bridge_vlan_group *vg, 44078851988SVlad Yasevich struct sk_buff *skb, u16 *vid) 44178851988SVlad Yasevich { 4426dada9b1SNikolay Aleksandrov struct br_vlan_stats *stats; 4436dada9b1SNikolay Aleksandrov struct net_bridge_vlan *v; 4448580e211SToshiaki Makita bool tagged; 445a37b85c9SVlad Yasevich 44620adfa1aSVlad Yasevich BR_INPUT_SKB_CB(skb)->vlan_filtered = true; 44712464bb8SToshiaki Makita /* If vlan tx offload is disabled on bridge device and frame was 44812464bb8SToshiaki Makita * sent from vlan device on the bridge device, it does not have 44912464bb8SToshiaki Makita * HW accelerated vlan tag. 45012464bb8SToshiaki Makita */ 451df8a39deSJiri Pirko if (unlikely(!skb_vlan_tag_present(skb) && 4526dada9b1SNikolay Aleksandrov skb->protocol == br->vlan_proto)) { 4530d5501c1SVlad Yasevich skb = skb_vlan_untag(skb); 45412464bb8SToshiaki Makita if (unlikely(!skb)) 45512464bb8SToshiaki Makita return false; 45612464bb8SToshiaki Makita } 45712464bb8SToshiaki Makita 4588580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid)) { 4598580e211SToshiaki Makita /* Tagged frame */ 4606dada9b1SNikolay Aleksandrov if (skb->vlan_proto != br->vlan_proto) { 4618580e211SToshiaki Makita /* Protocol-mismatch, empty out vlan_tci for new tag */ 4628580e211SToshiaki Makita skb_push(skb, ETH_HLEN); 46362749e2cSJiri Pirko skb = vlan_insert_tag_set_proto(skb, skb->vlan_proto, 464df8a39deSJiri Pirko skb_vlan_tag_get(skb)); 4658580e211SToshiaki Makita if (unlikely(!skb)) 4668580e211SToshiaki Makita return false; 4678580e211SToshiaki Makita 4688580e211SToshiaki Makita skb_pull(skb, ETH_HLEN); 4698580e211SToshiaki Makita skb_reset_mac_len(skb); 4708580e211SToshiaki Makita *vid = 0; 4718580e211SToshiaki Makita tagged = false; 4728580e211SToshiaki Makita } else { 4738580e211SToshiaki Makita tagged = true; 4748580e211SToshiaki Makita } 4758580e211SToshiaki Makita } else { 4768580e211SToshiaki Makita /* Untagged frame */ 4778580e211SToshiaki Makita tagged = false; 4788580e211SToshiaki Makita } 4798580e211SToshiaki Makita 480b90356ceSToshiaki Makita if (!*vid) { 48177751ee8SNikolay Aleksandrov u16 pvid = br_get_pvid(vg); 48277751ee8SNikolay Aleksandrov 483b90356ceSToshiaki Makita /* Frame had a tag with VID 0 or did not have a tag. 484b90356ceSToshiaki Makita * See if pvid is set on this port. That tells us which 485b90356ceSToshiaki Makita * vlan untagged or priority-tagged traffic belongs to. 48678851988SVlad Yasevich */ 4873df6bf45SVlad Yasevich if (!pvid) 488eb707618SToshiaki Makita goto drop; 48978851988SVlad Yasevich 490b90356ceSToshiaki Makita /* PVID is set on this port. Any untagged or priority-tagged 491b90356ceSToshiaki Makita * ingress frame is considered to belong to this vlan. 49278851988SVlad Yasevich */ 493dfb5fa32SToshiaki Makita *vid = pvid; 4948580e211SToshiaki Makita if (likely(!tagged)) 495b90356ceSToshiaki Makita /* Untagged Frame. */ 4966dada9b1SNikolay Aleksandrov __vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid); 497b90356ceSToshiaki Makita else 498b90356ceSToshiaki Makita /* Priority-tagged Frame. 4995978f8a9SMichał Mirosław * At this point, we know that skb->vlan_tci VID 5005978f8a9SMichał Mirosław * field was 0. 501b90356ceSToshiaki Makita * We update only VID field and preserve PCP field. 502b90356ceSToshiaki Makita */ 503b90356ceSToshiaki Makita skb->vlan_tci |= pvid; 504b90356ceSToshiaki Makita 5056dada9b1SNikolay Aleksandrov /* if stats are disabled we can avoid the lookup */ 506ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) 50778851988SVlad Yasevich return true; 50878851988SVlad Yasevich } 50977751ee8SNikolay Aleksandrov v = br_vlan_find(vg, *vid); 5106dada9b1SNikolay Aleksandrov if (!v || !br_vlan_should_use(v)) 5116dada9b1SNikolay Aleksandrov goto drop; 5126dada9b1SNikolay Aleksandrov 513ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { 5146dada9b1SNikolay Aleksandrov stats = this_cpu_ptr(v->stats); 5156dada9b1SNikolay Aleksandrov u64_stats_update_begin(&stats->syncp); 5166dada9b1SNikolay Aleksandrov stats->rx_bytes += skb->len; 5176dada9b1SNikolay Aleksandrov stats->rx_packets++; 5186dada9b1SNikolay Aleksandrov u64_stats_update_end(&stats->syncp); 5196dada9b1SNikolay Aleksandrov } 5206dada9b1SNikolay Aleksandrov 521a37b85c9SVlad Yasevich return true; 5226dada9b1SNikolay Aleksandrov 523eb707618SToshiaki Makita drop: 524eb707618SToshiaki Makita kfree_skb(skb); 525a37b85c9SVlad Yasevich return false; 526a37b85c9SVlad Yasevich } 527a37b85c9SVlad Yasevich 52877751ee8SNikolay Aleksandrov bool br_allowed_ingress(const struct net_bridge *br, 52977751ee8SNikolay Aleksandrov struct net_bridge_vlan_group *vg, struct sk_buff *skb, 5302594e906SNikolay Aleksandrov u16 *vid) 5312594e906SNikolay Aleksandrov { 5322594e906SNikolay Aleksandrov /* If VLAN filtering is disabled on the bridge, all packets are 5332594e906SNikolay Aleksandrov * permitted. 5342594e906SNikolay Aleksandrov */ 535ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) { 5362594e906SNikolay Aleksandrov BR_INPUT_SKB_CB(skb)->vlan_filtered = false; 5372594e906SNikolay Aleksandrov return true; 5382594e906SNikolay Aleksandrov } 5392594e906SNikolay Aleksandrov 5406dada9b1SNikolay Aleksandrov return __allowed_ingress(br, vg, skb, vid); 5412594e906SNikolay Aleksandrov } 5422594e906SNikolay Aleksandrov 54385f46c6bSVlad Yasevich /* Called under RCU. */ 5442594e906SNikolay Aleksandrov bool br_allowed_egress(struct net_bridge_vlan_group *vg, 54585f46c6bSVlad Yasevich const struct sk_buff *skb) 54685f46c6bSVlad Yasevich { 5472594e906SNikolay Aleksandrov const struct net_bridge_vlan *v; 54885f46c6bSVlad Yasevich u16 vid; 54985f46c6bSVlad Yasevich 55020adfa1aSVlad Yasevich /* If this packet was not filtered at input, let it pass */ 55120adfa1aSVlad Yasevich if (!BR_INPUT_SKB_CB(skb)->vlan_filtered) 55285f46c6bSVlad Yasevich return true; 55385f46c6bSVlad Yasevich 55485f46c6bSVlad Yasevich br_vlan_get_tag(skb, &vid); 5552594e906SNikolay Aleksandrov v = br_vlan_find(vg, vid); 5562594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v)) 55785f46c6bSVlad Yasevich return true; 55885f46c6bSVlad Yasevich 55985f46c6bSVlad Yasevich return false; 56085f46c6bSVlad Yasevich } 56185f46c6bSVlad Yasevich 562e0d7968aSToshiaki Makita /* Called under RCU */ 563e0d7968aSToshiaki Makita bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) 564e0d7968aSToshiaki Makita { 565468e7944SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 566e0d7968aSToshiaki Makita struct net_bridge *br = p->br; 567e0d7968aSToshiaki Makita 56820adfa1aSVlad Yasevich /* If filtering was disabled at input, let it pass. */ 569ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED)) 570e0d7968aSToshiaki Makita return true; 571e0d7968aSToshiaki Makita 572eca1e006SIdo Schimmel vg = nbp_vlan_group_rcu(p); 573468e7944SNikolay Aleksandrov if (!vg || !vg->num_vlans) 574e0d7968aSToshiaki Makita return false; 575e0d7968aSToshiaki Makita 5768580e211SToshiaki Makita if (!br_vlan_get_tag(skb, vid) && skb->vlan_proto != br->vlan_proto) 5778580e211SToshiaki Makita *vid = 0; 5788580e211SToshiaki Makita 579e0d7968aSToshiaki Makita if (!*vid) { 58077751ee8SNikolay Aleksandrov *vid = br_get_pvid(vg); 5813df6bf45SVlad Yasevich if (!*vid) 582e0d7968aSToshiaki Makita return false; 583e0d7968aSToshiaki Makita 584e0d7968aSToshiaki Makita return true; 585e0d7968aSToshiaki Makita } 586e0d7968aSToshiaki Makita 58777751ee8SNikolay Aleksandrov if (br_vlan_find(vg, *vid)) 588e0d7968aSToshiaki Makita return true; 589e0d7968aSToshiaki Makita 590e0d7968aSToshiaki Makita return false; 591e0d7968aSToshiaki Makita } 592e0d7968aSToshiaki Makita 593dbd6dc75SPetr Machata static int br_vlan_add_existing(struct net_bridge *br, 594dbd6dc75SPetr Machata struct net_bridge_vlan_group *vg, 595dbd6dc75SPetr Machata struct net_bridge_vlan *vlan, 596169327d5SPetr Machata u16 flags, bool *changed, 597169327d5SPetr Machata struct netlink_ext_ack *extack) 598dbd6dc75SPetr Machata { 599dbd6dc75SPetr Machata int err; 600dbd6dc75SPetr Machata 601169327d5SPetr Machata err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags, extack); 6029c86ce2cSPetr Machata if (err && err != -EOPNOTSUPP) 6039c86ce2cSPetr Machata return err; 6049c86ce2cSPetr Machata 605dbd6dc75SPetr Machata if (!br_vlan_is_brentry(vlan)) { 606dbd6dc75SPetr Machata /* Trying to change flags of non-existent bridge vlan */ 6079c86ce2cSPetr Machata if (!(flags & BRIDGE_VLAN_INFO_BRENTRY)) { 6089c86ce2cSPetr Machata err = -EINVAL; 6099c86ce2cSPetr Machata goto err_flags; 6109c86ce2cSPetr Machata } 611dbd6dc75SPetr Machata /* It was only kept for port vlans, now make it real */ 612dbd6dc75SPetr Machata err = br_fdb_insert(br, NULL, br->dev->dev_addr, 613dbd6dc75SPetr Machata vlan->vid); 614dbd6dc75SPetr Machata if (err) { 615dbd6dc75SPetr Machata br_err(br, "failed to insert local address into bridge forwarding table\n"); 6169c86ce2cSPetr Machata goto err_fdb_insert; 617dbd6dc75SPetr Machata } 618dbd6dc75SPetr Machata 619dbd6dc75SPetr Machata refcount_inc(&vlan->refcnt); 620dbd6dc75SPetr Machata vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; 621dbd6dc75SPetr Machata vg->num_vlans++; 622dbd6dc75SPetr Machata *changed = true; 623dbd6dc75SPetr Machata } 624dbd6dc75SPetr Machata 625dbd6dc75SPetr Machata if (__vlan_add_flags(vlan, flags)) 626dbd6dc75SPetr Machata *changed = true; 627dbd6dc75SPetr Machata 628dbd6dc75SPetr Machata return 0; 6299c86ce2cSPetr Machata 6309c86ce2cSPetr Machata err_fdb_insert: 6319c86ce2cSPetr Machata err_flags: 6329c86ce2cSPetr Machata br_switchdev_port_vlan_del(br->dev, vlan->vid); 6339c86ce2cSPetr Machata return err; 634dbd6dc75SPetr Machata } 635dbd6dc75SPetr Machata 6368adff41cSToshiaki Makita /* Must be protected by RTNL. 6378adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 638f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 6398adff41cSToshiaki Makita */ 640169327d5SPetr Machata int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed, 641169327d5SPetr Machata struct netlink_ext_ack *extack) 642243a2e63SVlad Yasevich { 643907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 6442594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 6452594e906SNikolay Aleksandrov int ret; 646243a2e63SVlad Yasevich 647243a2e63SVlad Yasevich ASSERT_RTNL(); 648243a2e63SVlad Yasevich 649f418af63SNikolay Aleksandrov *changed = false; 650907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 651907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(vg, vid); 652dbd6dc75SPetr Machata if (vlan) 653169327d5SPetr Machata return br_vlan_add_existing(br, vg, vlan, flags, changed, 654169327d5SPetr Machata extack); 655243a2e63SVlad Yasevich 6562594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 6572594e906SNikolay Aleksandrov if (!vlan) 658243a2e63SVlad Yasevich return -ENOMEM; 659243a2e63SVlad Yasevich 6606dada9b1SNikolay Aleksandrov vlan->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats); 6616dada9b1SNikolay Aleksandrov if (!vlan->stats) { 6626dada9b1SNikolay Aleksandrov kfree(vlan); 6636dada9b1SNikolay Aleksandrov return -ENOMEM; 6646dada9b1SNikolay Aleksandrov } 6652594e906SNikolay Aleksandrov vlan->vid = vid; 6662594e906SNikolay Aleksandrov vlan->flags = flags | BRIDGE_VLAN_INFO_MASTER; 6672594e906SNikolay Aleksandrov vlan->flags &= ~BRIDGE_VLAN_INFO_PVID; 6682594e906SNikolay Aleksandrov vlan->br = br; 6692594e906SNikolay Aleksandrov if (flags & BRIDGE_VLAN_INFO_BRENTRY) 67025127759SReshetova, Elena refcount_set(&vlan->refcnt, 1); 671169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 6726dada9b1SNikolay Aleksandrov if (ret) { 6736dada9b1SNikolay Aleksandrov free_percpu(vlan->stats); 6742594e906SNikolay Aleksandrov kfree(vlan); 675f418af63SNikolay Aleksandrov } else { 676f418af63SNikolay Aleksandrov *changed = true; 6776dada9b1SNikolay Aleksandrov } 678243a2e63SVlad Yasevich 6792594e906SNikolay Aleksandrov return ret; 680243a2e63SVlad Yasevich } 681243a2e63SVlad Yasevich 6828adff41cSToshiaki Makita /* Must be protected by RTNL. 6838adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 6848adff41cSToshiaki Makita */ 685243a2e63SVlad Yasevich int br_vlan_delete(struct net_bridge *br, u16 vid) 686243a2e63SVlad Yasevich { 687907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 6882594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 689243a2e63SVlad Yasevich 690243a2e63SVlad Yasevich ASSERT_RTNL(); 691243a2e63SVlad Yasevich 692907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 693907b1e6eSNikolay Aleksandrov v = br_vlan_find(vg, vid); 6942594e906SNikolay Aleksandrov if (!v || !br_vlan_is_brentry(v)) 6952594e906SNikolay Aleksandrov return -ENOENT; 696243a2e63SVlad Yasevich 697424bb9c9SToshiaki Makita br_fdb_find_delete_local(br, NULL, br->dev->dev_addr, vid); 6983741873bSRoopa Prabhu br_fdb_delete_by_port(br, NULL, vid, 0); 699bc9a25d2SVlad Yasevich 700efa5356bSRoopa Prabhu vlan_tunnel_info_del(vg, v); 701efa5356bSRoopa Prabhu 7022594e906SNikolay Aleksandrov return __vlan_del(v); 703243a2e63SVlad Yasevich } 704243a2e63SVlad Yasevich 705243a2e63SVlad Yasevich void br_vlan_flush(struct net_bridge *br) 706243a2e63SVlad Yasevich { 707f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 708f409d0edSNikolay Aleksandrov 709243a2e63SVlad Yasevich ASSERT_RTNL(); 710243a2e63SVlad Yasevich 711f409d0edSNikolay Aleksandrov vg = br_vlan_group(br); 712f409d0edSNikolay Aleksandrov __vlan_flush(vg); 713f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(br->vlgrp, NULL); 714f409d0edSNikolay Aleksandrov synchronize_rcu(); 715f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 716243a2e63SVlad Yasevich } 717243a2e63SVlad Yasevich 7182594e906SNikolay Aleksandrov struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid) 7192b292fb4SToshiaki Makita { 7202594e906SNikolay Aleksandrov if (!vg) 7212594e906SNikolay Aleksandrov return NULL; 7222b292fb4SToshiaki Makita 7232594e906SNikolay Aleksandrov return br_vlan_lookup(&vg->vlan_hash, vid); 7242b292fb4SToshiaki Makita } 7252b292fb4SToshiaki Makita 726204177f3SToshiaki Makita /* Must be protected by RTNL. */ 727204177f3SToshiaki Makita static void recalculate_group_addr(struct net_bridge *br) 728204177f3SToshiaki Makita { 729be3664a0SNikolay Aleksandrov if (br_opt_get(br, BROPT_GROUP_ADDR_SET)) 730204177f3SToshiaki Makita return; 731204177f3SToshiaki Makita 732204177f3SToshiaki Makita spin_lock_bh(&br->lock); 733ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 734ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) { 735204177f3SToshiaki Makita /* Bridge Group Address */ 736204177f3SToshiaki Makita br->group_addr[5] = 0x00; 737204177f3SToshiaki Makita } else { /* vlan_enabled && ETH_P_8021AD */ 738204177f3SToshiaki Makita /* Provider Bridge Group Address */ 739204177f3SToshiaki Makita br->group_addr[5] = 0x08; 740204177f3SToshiaki Makita } 741204177f3SToshiaki Makita spin_unlock_bh(&br->lock); 742204177f3SToshiaki Makita } 743204177f3SToshiaki Makita 744204177f3SToshiaki Makita /* Must be protected by RTNL. */ 745204177f3SToshiaki Makita void br_recalculate_fwd_mask(struct net_bridge *br) 746204177f3SToshiaki Makita { 747ae75767eSNikolay Aleksandrov if (!br_opt_get(br, BROPT_VLAN_ENABLED) || 748ae75767eSNikolay Aleksandrov br->vlan_proto == htons(ETH_P_8021Q)) 749204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; 750204177f3SToshiaki Makita else /* vlan_enabled && ETH_P_8021AD */ 751204177f3SToshiaki Makita br->group_fwd_mask_required = BR_GROUPFWD_8021AD & 752204177f3SToshiaki Makita ~(1u << br->group_addr[5]); 753204177f3SToshiaki Makita } 754204177f3SToshiaki Makita 755a7854037SNikolay Aleksandrov int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) 756243a2e63SVlad Yasevich { 7576b72a770SElad Raz struct switchdev_attr attr = { 7586b72a770SElad Raz .orig_dev = br->dev, 7596b72a770SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 7606b72a770SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 7616b72a770SElad Raz .u.vlan_filtering = val, 7626b72a770SElad Raz }; 7636b72a770SElad Raz int err; 7646b72a770SElad Raz 765ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED) == !!val) 766a7854037SNikolay Aleksandrov return 0; 767243a2e63SVlad Yasevich 7686b72a770SElad Raz err = switchdev_port_attr_set(br->dev, &attr); 7696b72a770SElad Raz if (err && err != -EOPNOTSUPP) 7706b72a770SElad Raz return err; 7716b72a770SElad Raz 772ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_ENABLED, !!val); 7732796d0c6SVlad Yasevich br_manage_promisc(br); 774204177f3SToshiaki Makita recalculate_group_addr(br); 775204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 776243a2e63SVlad Yasevich 777a7854037SNikolay Aleksandrov return 0; 778a7854037SNikolay Aleksandrov } 779a7854037SNikolay Aleksandrov 780a7854037SNikolay Aleksandrov int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val) 781a7854037SNikolay Aleksandrov { 782047831a9SXin Long return __br_vlan_filter_toggle(br, val); 783243a2e63SVlad Yasevich } 784243a2e63SVlad Yasevich 7851f51445aSIdo Schimmel bool br_vlan_enabled(const struct net_device *dev) 7861f51445aSIdo Schimmel { 7871f51445aSIdo Schimmel struct net_bridge *br = netdev_priv(dev); 7881f51445aSIdo Schimmel 789ae75767eSNikolay Aleksandrov return br_opt_get(br, BROPT_VLAN_ENABLED); 7901f51445aSIdo Schimmel } 7911f51445aSIdo Schimmel EXPORT_SYMBOL_GPL(br_vlan_enabled); 7921f51445aSIdo Schimmel 793d2d427b3SToshiaki Makita int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) 794204177f3SToshiaki Makita { 795204177f3SToshiaki Makita int err = 0; 796204177f3SToshiaki Makita struct net_bridge_port *p; 7972594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 798907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 799d2d427b3SToshiaki Makita __be16 oldproto; 800204177f3SToshiaki Makita 801204177f3SToshiaki Makita if (br->vlan_proto == proto) 802d2d427b3SToshiaki Makita return 0; 803204177f3SToshiaki Makita 804204177f3SToshiaki Makita /* Add VLANs for the new proto to the device filter. */ 805204177f3SToshiaki Makita list_for_each_entry(p, &br->port_list, list) { 806907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 807907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) { 8082594e906SNikolay Aleksandrov err = vlan_vid_add(p->dev, proto, vlan->vid); 809204177f3SToshiaki Makita if (err) 810204177f3SToshiaki Makita goto err_filt; 811204177f3SToshiaki Makita } 812204177f3SToshiaki Makita } 813204177f3SToshiaki Makita 814204177f3SToshiaki Makita oldproto = br->vlan_proto; 815204177f3SToshiaki Makita br->vlan_proto = proto; 816204177f3SToshiaki Makita 817204177f3SToshiaki Makita recalculate_group_addr(br); 818204177f3SToshiaki Makita br_recalculate_fwd_mask(br); 819204177f3SToshiaki Makita 820204177f3SToshiaki Makita /* Delete VLANs for the old proto from the device filter. */ 821907b1e6eSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 822907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 823907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 8242594e906SNikolay Aleksandrov vlan_vid_del(p->dev, oldproto, vlan->vid); 825907b1e6eSNikolay Aleksandrov } 826204177f3SToshiaki Makita 827d2d427b3SToshiaki Makita return 0; 828204177f3SToshiaki Makita 829204177f3SToshiaki Makita err_filt: 830907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) 8312594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 832204177f3SToshiaki Makita 833907b1e6eSNikolay Aleksandrov list_for_each_entry_continue_reverse(p, &br->port_list, list) { 834907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 835907b1e6eSNikolay Aleksandrov list_for_each_entry(vlan, &vg->vlan_list, vlist) 8362594e906SNikolay Aleksandrov vlan_vid_del(p->dev, proto, vlan->vid); 837907b1e6eSNikolay Aleksandrov } 838204177f3SToshiaki Makita 839d2d427b3SToshiaki Makita return err; 840d2d427b3SToshiaki Makita } 841d2d427b3SToshiaki Makita 842d2d427b3SToshiaki Makita int br_vlan_set_proto(struct net_bridge *br, unsigned long val) 843d2d427b3SToshiaki Makita { 844d2d427b3SToshiaki Makita if (val != ETH_P_8021Q && val != ETH_P_8021AD) 845d2d427b3SToshiaki Makita return -EPROTONOSUPPORT; 846d2d427b3SToshiaki Makita 847047831a9SXin Long return __br_vlan_set_proto(br, htons(val)); 848204177f3SToshiaki Makita } 849204177f3SToshiaki Makita 8506dada9b1SNikolay Aleksandrov int br_vlan_set_stats(struct net_bridge *br, unsigned long val) 8516dada9b1SNikolay Aleksandrov { 8526dada9b1SNikolay Aleksandrov switch (val) { 8536dada9b1SNikolay Aleksandrov case 0: 8546dada9b1SNikolay Aleksandrov case 1: 855ae75767eSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_ENABLED, !!val); 8566dada9b1SNikolay Aleksandrov break; 8576dada9b1SNikolay Aleksandrov default: 8586dada9b1SNikolay Aleksandrov return -EINVAL; 8596dada9b1SNikolay Aleksandrov } 8606dada9b1SNikolay Aleksandrov 8616dada9b1SNikolay Aleksandrov return 0; 8626dada9b1SNikolay Aleksandrov } 8636dada9b1SNikolay Aleksandrov 8649163a0fcSNikolay Aleksandrov int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val) 8659163a0fcSNikolay Aleksandrov { 8669163a0fcSNikolay Aleksandrov struct net_bridge_port *p; 8679163a0fcSNikolay Aleksandrov 8689163a0fcSNikolay Aleksandrov /* allow to change the option if there are no port vlans configured */ 8699163a0fcSNikolay Aleksandrov list_for_each_entry(p, &br->port_list, list) { 8709163a0fcSNikolay Aleksandrov struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 8719163a0fcSNikolay Aleksandrov 8729163a0fcSNikolay Aleksandrov if (vg->num_vlans) 8739163a0fcSNikolay Aleksandrov return -EBUSY; 8749163a0fcSNikolay Aleksandrov } 8759163a0fcSNikolay Aleksandrov 8769163a0fcSNikolay Aleksandrov switch (val) { 8779163a0fcSNikolay Aleksandrov case 0: 8789163a0fcSNikolay Aleksandrov case 1: 8799163a0fcSNikolay Aleksandrov br_opt_toggle(br, BROPT_VLAN_STATS_PER_PORT, !!val); 8809163a0fcSNikolay Aleksandrov break; 8819163a0fcSNikolay Aleksandrov default: 8829163a0fcSNikolay Aleksandrov return -EINVAL; 8839163a0fcSNikolay Aleksandrov } 8849163a0fcSNikolay Aleksandrov 8859163a0fcSNikolay Aleksandrov return 0; 8869163a0fcSNikolay Aleksandrov } 8879163a0fcSNikolay Aleksandrov 88877751ee8SNikolay Aleksandrov static bool vlan_default_pvid(struct net_bridge_vlan_group *vg, u16 vid) 8895be5a2dfSVlad Yasevich { 8902594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 8912594e906SNikolay Aleksandrov 89277751ee8SNikolay Aleksandrov if (vid != vg->pvid) 8932594e906SNikolay Aleksandrov return false; 8942594e906SNikolay Aleksandrov 8952594e906SNikolay Aleksandrov v = br_vlan_lookup(&vg->vlan_hash, vid); 8962594e906SNikolay Aleksandrov if (v && br_vlan_should_use(v) && 8972594e906SNikolay Aleksandrov (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)) 8982594e906SNikolay Aleksandrov return true; 8992594e906SNikolay Aleksandrov 9002594e906SNikolay Aleksandrov return false; 9015be5a2dfSVlad Yasevich } 9025be5a2dfSVlad Yasevich 9035be5a2dfSVlad Yasevich static void br_vlan_disable_default_pvid(struct net_bridge *br) 9045be5a2dfSVlad Yasevich { 9055be5a2dfSVlad Yasevich struct net_bridge_port *p; 9065be5a2dfSVlad Yasevich u16 pvid = br->default_pvid; 9075be5a2dfSVlad Yasevich 9085be5a2dfSVlad Yasevich /* Disable default_pvid on all ports where it is still 9095be5a2dfSVlad Yasevich * configured. 9105be5a2dfSVlad Yasevich */ 911907b1e6eSNikolay Aleksandrov if (vlan_default_pvid(br_vlan_group(br), pvid)) 9125be5a2dfSVlad Yasevich br_vlan_delete(br, pvid); 9135be5a2dfSVlad Yasevich 9145be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 915907b1e6eSNikolay Aleksandrov if (vlan_default_pvid(nbp_vlan_group(p), pvid)) 9165be5a2dfSVlad Yasevich nbp_vlan_delete(p, pvid); 9175be5a2dfSVlad Yasevich } 9185be5a2dfSVlad Yasevich 9195be5a2dfSVlad Yasevich br->default_pvid = 0; 9205be5a2dfSVlad Yasevich } 9215be5a2dfSVlad Yasevich 922169327d5SPetr Machata int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid, 923169327d5SPetr Machata struct netlink_ext_ack *extack) 9245be5a2dfSVlad Yasevich { 9252594e906SNikolay Aleksandrov const struct net_bridge_vlan *pvent; 926907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 9275be5a2dfSVlad Yasevich struct net_bridge_port *p; 928f418af63SNikolay Aleksandrov unsigned long *changed; 929f418af63SNikolay Aleksandrov bool vlchange; 9305be5a2dfSVlad Yasevich u16 old_pvid; 9315be5a2dfSVlad Yasevich int err = 0; 9325be5a2dfSVlad Yasevich 9330f963b75SNikolay Aleksandrov if (!pvid) { 9340f963b75SNikolay Aleksandrov br_vlan_disable_default_pvid(br); 9350f963b75SNikolay Aleksandrov return 0; 9360f963b75SNikolay Aleksandrov } 9370f963b75SNikolay Aleksandrov 938459479daSAndy Shevchenko changed = bitmap_zalloc(BR_MAX_PORTS, GFP_KERNEL); 9395be5a2dfSVlad Yasevich if (!changed) 9405be5a2dfSVlad Yasevich return -ENOMEM; 9415be5a2dfSVlad Yasevich 9425be5a2dfSVlad Yasevich old_pvid = br->default_pvid; 9435be5a2dfSVlad Yasevich 9445be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 9455be5a2dfSVlad Yasevich * user configuration. 9465be5a2dfSVlad Yasevich */ 947907b1e6eSNikolay Aleksandrov vg = br_vlan_group(br); 948907b1e6eSNikolay Aleksandrov pvent = br_vlan_find(vg, pvid); 949907b1e6eSNikolay Aleksandrov if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && 9502594e906SNikolay Aleksandrov (!pvent || !br_vlan_should_use(pvent))) { 9515be5a2dfSVlad Yasevich err = br_vlan_add(br, pvid, 9525be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 9532594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 954f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 955169327d5SPetr Machata &vlchange, extack); 9565be5a2dfSVlad Yasevich if (err) 9575be5a2dfSVlad Yasevich goto out; 9585be5a2dfSVlad Yasevich br_vlan_delete(br, old_pvid); 9595be5a2dfSVlad Yasevich set_bit(0, changed); 9605be5a2dfSVlad Yasevich } 9615be5a2dfSVlad Yasevich 9625be5a2dfSVlad Yasevich list_for_each_entry(p, &br->port_list, list) { 9635be5a2dfSVlad Yasevich /* Update default_pvid config only if we do not conflict with 9645be5a2dfSVlad Yasevich * user configuration. 9655be5a2dfSVlad Yasevich */ 966907b1e6eSNikolay Aleksandrov vg = nbp_vlan_group(p); 9675be5a2dfSVlad Yasevich if ((old_pvid && 968907b1e6eSNikolay Aleksandrov !vlan_default_pvid(vg, old_pvid)) || 969907b1e6eSNikolay Aleksandrov br_vlan_find(vg, pvid)) 9705be5a2dfSVlad Yasevich continue; 9715be5a2dfSVlad Yasevich 9725be5a2dfSVlad Yasevich err = nbp_vlan_add(p, pvid, 9735be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 974f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 975169327d5SPetr Machata &vlchange, extack); 9765be5a2dfSVlad Yasevich if (err) 9775be5a2dfSVlad Yasevich goto err_port; 9785be5a2dfSVlad Yasevich nbp_vlan_delete(p, old_pvid); 9795be5a2dfSVlad Yasevich set_bit(p->port_no, changed); 9805be5a2dfSVlad Yasevich } 9815be5a2dfSVlad Yasevich 9825be5a2dfSVlad Yasevich br->default_pvid = pvid; 9835be5a2dfSVlad Yasevich 9845be5a2dfSVlad Yasevich out: 985459479daSAndy Shevchenko bitmap_free(changed); 9865be5a2dfSVlad Yasevich return err; 9875be5a2dfSVlad Yasevich 9885be5a2dfSVlad Yasevich err_port: 9895be5a2dfSVlad Yasevich list_for_each_entry_continue_reverse(p, &br->port_list, list) { 9905be5a2dfSVlad Yasevich if (!test_bit(p->port_no, changed)) 9915be5a2dfSVlad Yasevich continue; 9925be5a2dfSVlad Yasevich 9935be5a2dfSVlad Yasevich if (old_pvid) 9945be5a2dfSVlad Yasevich nbp_vlan_add(p, old_pvid, 9955be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 996f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 997169327d5SPetr Machata &vlchange, NULL); 9985be5a2dfSVlad Yasevich nbp_vlan_delete(p, pvid); 9995be5a2dfSVlad Yasevich } 10005be5a2dfSVlad Yasevich 10015be5a2dfSVlad Yasevich if (test_bit(0, changed)) { 10025be5a2dfSVlad Yasevich if (old_pvid) 10035be5a2dfSVlad Yasevich br_vlan_add(br, old_pvid, 10045be5a2dfSVlad Yasevich BRIDGE_VLAN_INFO_PVID | 10052594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED | 1006f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_BRENTRY, 1007169327d5SPetr Machata &vlchange, NULL); 10085be5a2dfSVlad Yasevich br_vlan_delete(br, pvid); 10095be5a2dfSVlad Yasevich } 10105be5a2dfSVlad Yasevich goto out; 10115be5a2dfSVlad Yasevich } 10125be5a2dfSVlad Yasevich 101396a20d9dSVlad Yasevich int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val) 101496a20d9dSVlad Yasevich { 101596a20d9dSVlad Yasevich u16 pvid = val; 101696a20d9dSVlad Yasevich int err = 0; 101796a20d9dSVlad Yasevich 10185be5a2dfSVlad Yasevich if (val >= VLAN_VID_MASK) 101996a20d9dSVlad Yasevich return -EINVAL; 102096a20d9dSVlad Yasevich 102196a20d9dSVlad Yasevich if (pvid == br->default_pvid) 1022047831a9SXin Long goto out; 102396a20d9dSVlad Yasevich 102496a20d9dSVlad Yasevich /* Only allow default pvid change when filtering is disabled */ 1025ae75767eSNikolay Aleksandrov if (br_opt_get(br, BROPT_VLAN_ENABLED)) { 102696a20d9dSVlad Yasevich pr_info_once("Please disable vlan filtering to change default_pvid\n"); 102796a20d9dSVlad Yasevich err = -EPERM; 1028047831a9SXin Long goto out; 102996a20d9dSVlad Yasevich } 1030169327d5SPetr Machata err = __br_vlan_set_default_pvid(br, pvid, NULL); 1031047831a9SXin Long out: 103296a20d9dSVlad Yasevich return err; 103396a20d9dSVlad Yasevich } 103496a20d9dSVlad Yasevich 10355be5a2dfSVlad Yasevich int br_vlan_init(struct net_bridge *br) 10368580e211SToshiaki Makita { 1037907b1e6eSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 10382594e906SNikolay Aleksandrov int ret = -ENOMEM; 1039f418af63SNikolay Aleksandrov bool changed; 10402594e906SNikolay Aleksandrov 1041907b1e6eSNikolay Aleksandrov vg = kzalloc(sizeof(*vg), GFP_KERNEL); 1042907b1e6eSNikolay Aleksandrov if (!vg) 10432594e906SNikolay Aleksandrov goto out; 1044907b1e6eSNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 10452594e906SNikolay Aleksandrov if (ret) 10462594e906SNikolay Aleksandrov goto err_rhtbl; 1047efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1048efa5356bSRoopa Prabhu if (ret) 1049efa5356bSRoopa Prabhu goto err_tunnel_init; 1050907b1e6eSNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 10518580e211SToshiaki Makita br->vlan_proto = htons(ETH_P_8021Q); 105296a20d9dSVlad Yasevich br->default_pvid = 1; 1053907b1e6eSNikolay Aleksandrov rcu_assign_pointer(br->vlgrp, vg); 10542594e906SNikolay Aleksandrov ret = br_vlan_add(br, 1, 10552594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED | 1056169327d5SPetr Machata BRIDGE_VLAN_INFO_BRENTRY, &changed, NULL); 10572594e906SNikolay Aleksandrov if (ret) 10582594e906SNikolay Aleksandrov goto err_vlan_add; 10592594e906SNikolay Aleksandrov 10602594e906SNikolay Aleksandrov out: 10612594e906SNikolay Aleksandrov return ret; 10622594e906SNikolay Aleksandrov 10632594e906SNikolay Aleksandrov err_vlan_add: 1064efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 1065efa5356bSRoopa Prabhu err_tunnel_init: 1066907b1e6eSNikolay Aleksandrov rhashtable_destroy(&vg->vlan_hash); 10672594e906SNikolay Aleksandrov err_rhtbl: 1068907b1e6eSNikolay Aleksandrov kfree(vg); 10692594e906SNikolay Aleksandrov 10702594e906SNikolay Aleksandrov goto out; 10712594e906SNikolay Aleksandrov } 10722594e906SNikolay Aleksandrov 1073169327d5SPetr Machata int nbp_vlan_init(struct net_bridge_port *p, struct netlink_ext_ack *extack) 10742594e906SNikolay Aleksandrov { 1075404cdbf0SElad Raz struct switchdev_attr attr = { 1076404cdbf0SElad Raz .orig_dev = p->br->dev, 1077404cdbf0SElad Raz .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING, 1078404cdbf0SElad Raz .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP, 1079ae75767eSNikolay Aleksandrov .u.vlan_filtering = br_opt_get(p->br, BROPT_VLAN_ENABLED), 1080404cdbf0SElad Raz }; 1081263344e6SNikolay Aleksandrov struct net_bridge_vlan_group *vg; 10822594e906SNikolay Aleksandrov int ret = -ENOMEM; 10832594e906SNikolay Aleksandrov 1084263344e6SNikolay Aleksandrov vg = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); 1085263344e6SNikolay Aleksandrov if (!vg) 10862594e906SNikolay Aleksandrov goto out; 10872594e906SNikolay Aleksandrov 1088404cdbf0SElad Raz ret = switchdev_port_attr_set(p->dev, &attr); 1089404cdbf0SElad Raz if (ret && ret != -EOPNOTSUPP) 1090404cdbf0SElad Raz goto err_vlan_enabled; 1091404cdbf0SElad Raz 1092263344e6SNikolay Aleksandrov ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); 10932594e906SNikolay Aleksandrov if (ret) 10942594e906SNikolay Aleksandrov goto err_rhtbl; 1095efa5356bSRoopa Prabhu ret = vlan_tunnel_init(vg); 1096efa5356bSRoopa Prabhu if (ret) 1097efa5356bSRoopa Prabhu goto err_tunnel_init; 1098263344e6SNikolay Aleksandrov INIT_LIST_HEAD(&vg->vlan_list); 1099907b1e6eSNikolay Aleksandrov rcu_assign_pointer(p->vlgrp, vg); 11002594e906SNikolay Aleksandrov if (p->br->default_pvid) { 1101f418af63SNikolay Aleksandrov bool changed; 1102f418af63SNikolay Aleksandrov 11032594e906SNikolay Aleksandrov ret = nbp_vlan_add(p, p->br->default_pvid, 11042594e906SNikolay Aleksandrov BRIDGE_VLAN_INFO_PVID | 1105f418af63SNikolay Aleksandrov BRIDGE_VLAN_INFO_UNTAGGED, 1106169327d5SPetr Machata &changed, extack); 11072594e906SNikolay Aleksandrov if (ret) 11082594e906SNikolay Aleksandrov goto err_vlan_add; 11092594e906SNikolay Aleksandrov } 11102594e906SNikolay Aleksandrov out: 11112594e906SNikolay Aleksandrov return ret; 11122594e906SNikolay Aleksandrov 11132594e906SNikolay Aleksandrov err_vlan_add: 111407bc588fSIdo Schimmel RCU_INIT_POINTER(p->vlgrp, NULL); 111507bc588fSIdo Schimmel synchronize_rcu(); 1116efa5356bSRoopa Prabhu vlan_tunnel_deinit(vg); 1117efa5356bSRoopa Prabhu err_tunnel_init: 1118efa5356bSRoopa Prabhu rhashtable_destroy(&vg->vlan_hash); 11192594e906SNikolay Aleksandrov err_rhtbl: 1120df2c4334SYotam Gigi err_vlan_enabled: 1121263344e6SNikolay Aleksandrov kfree(vg); 11222594e906SNikolay Aleksandrov 11232594e906SNikolay Aleksandrov goto out; 11248580e211SToshiaki Makita } 11258580e211SToshiaki Makita 11268adff41cSToshiaki Makita /* Must be protected by RTNL. 11278adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 1128f418af63SNikolay Aleksandrov * changed must be true only if the vlan was created or updated 11298adff41cSToshiaki Makita */ 1130f418af63SNikolay Aleksandrov int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags, 1131169327d5SPetr Machata bool *changed, struct netlink_ext_ack *extack) 1132243a2e63SVlad Yasevich { 11332594e906SNikolay Aleksandrov struct net_bridge_vlan *vlan; 11342594e906SNikolay Aleksandrov int ret; 1135243a2e63SVlad Yasevich 1136243a2e63SVlad Yasevich ASSERT_RTNL(); 1137243a2e63SVlad Yasevich 1138f418af63SNikolay Aleksandrov *changed = false; 1139907b1e6eSNikolay Aleksandrov vlan = br_vlan_find(nbp_vlan_group(port), vid); 11402594e906SNikolay Aleksandrov if (vlan) { 11417fbac984SIdo Schimmel /* Pass the flags to the hardware bridge */ 1142169327d5SPetr Machata ret = br_switchdev_port_vlan_add(port->dev, vid, flags, extack); 11437fbac984SIdo Schimmel if (ret && ret != -EOPNOTSUPP) 11447fbac984SIdo Schimmel return ret; 1145f418af63SNikolay Aleksandrov *changed = __vlan_add_flags(vlan, flags); 1146f418af63SNikolay Aleksandrov 11472594e906SNikolay Aleksandrov return 0; 1148243a2e63SVlad Yasevich } 1149243a2e63SVlad Yasevich 11502594e906SNikolay Aleksandrov vlan = kzalloc(sizeof(*vlan), GFP_KERNEL); 11512594e906SNikolay Aleksandrov if (!vlan) 11522594e906SNikolay Aleksandrov return -ENOMEM; 1153243a2e63SVlad Yasevich 11542594e906SNikolay Aleksandrov vlan->vid = vid; 11552594e906SNikolay Aleksandrov vlan->port = port; 1156169327d5SPetr Machata ret = __vlan_add(vlan, flags, extack); 11572594e906SNikolay Aleksandrov if (ret) 11582594e906SNikolay Aleksandrov kfree(vlan); 1159f418af63SNikolay Aleksandrov else 1160f418af63SNikolay Aleksandrov *changed = true; 1161243a2e63SVlad Yasevich 11622594e906SNikolay Aleksandrov return ret; 1163243a2e63SVlad Yasevich } 1164243a2e63SVlad Yasevich 11658adff41cSToshiaki Makita /* Must be protected by RTNL. 11668adff41cSToshiaki Makita * Must be called with vid in range from 1 to 4094 inclusive. 11678adff41cSToshiaki Makita */ 1168243a2e63SVlad Yasevich int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 1169243a2e63SVlad Yasevich { 11702594e906SNikolay Aleksandrov struct net_bridge_vlan *v; 1171243a2e63SVlad Yasevich 1172243a2e63SVlad Yasevich ASSERT_RTNL(); 1173243a2e63SVlad Yasevich 1174907b1e6eSNikolay Aleksandrov v = br_vlan_find(nbp_vlan_group(port), vid); 11752594e906SNikolay Aleksandrov if (!v) 11762594e906SNikolay Aleksandrov return -ENOENT; 1177424bb9c9SToshiaki Makita br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); 11781ea2d020SNikolay Aleksandrov br_fdb_delete_by_port(port->br, port, vid, 0); 1179bc9a25d2SVlad Yasevich 11802594e906SNikolay Aleksandrov return __vlan_del(v); 1181243a2e63SVlad Yasevich } 1182243a2e63SVlad Yasevich 1183243a2e63SVlad Yasevich void nbp_vlan_flush(struct net_bridge_port *port) 1184243a2e63SVlad Yasevich { 1185f409d0edSNikolay Aleksandrov struct net_bridge_vlan_group *vg; 1186f409d0edSNikolay Aleksandrov 1187243a2e63SVlad Yasevich ASSERT_RTNL(); 1188243a2e63SVlad Yasevich 1189f409d0edSNikolay Aleksandrov vg = nbp_vlan_group(port); 1190f409d0edSNikolay Aleksandrov __vlan_flush(vg); 1191f409d0edSNikolay Aleksandrov RCU_INIT_POINTER(port->vlgrp, NULL); 1192f409d0edSNikolay Aleksandrov synchronize_rcu(); 1193f409d0edSNikolay Aleksandrov __vlan_group_free(vg); 11945be5a2dfSVlad Yasevich } 1195a60c0903SNikolay Aleksandrov 1196a60c0903SNikolay Aleksandrov void br_vlan_get_stats(const struct net_bridge_vlan *v, 1197a60c0903SNikolay Aleksandrov struct br_vlan_stats *stats) 1198a60c0903SNikolay Aleksandrov { 1199a60c0903SNikolay Aleksandrov int i; 1200a60c0903SNikolay Aleksandrov 1201a60c0903SNikolay Aleksandrov memset(stats, 0, sizeof(*stats)); 1202a60c0903SNikolay Aleksandrov for_each_possible_cpu(i) { 1203a60c0903SNikolay Aleksandrov u64 rxpackets, rxbytes, txpackets, txbytes; 1204a60c0903SNikolay Aleksandrov struct br_vlan_stats *cpu_stats; 1205a60c0903SNikolay Aleksandrov unsigned int start; 1206a60c0903SNikolay Aleksandrov 1207a60c0903SNikolay Aleksandrov cpu_stats = per_cpu_ptr(v->stats, i); 1208a60c0903SNikolay Aleksandrov do { 1209a60c0903SNikolay Aleksandrov start = u64_stats_fetch_begin_irq(&cpu_stats->syncp); 1210a60c0903SNikolay Aleksandrov rxpackets = cpu_stats->rx_packets; 1211a60c0903SNikolay Aleksandrov rxbytes = cpu_stats->rx_bytes; 1212a60c0903SNikolay Aleksandrov txbytes = cpu_stats->tx_bytes; 1213a60c0903SNikolay Aleksandrov txpackets = cpu_stats->tx_packets; 1214a60c0903SNikolay Aleksandrov } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start)); 1215a60c0903SNikolay Aleksandrov 1216a60c0903SNikolay Aleksandrov stats->rx_packets += rxpackets; 1217a60c0903SNikolay Aleksandrov stats->rx_bytes += rxbytes; 1218a60c0903SNikolay Aleksandrov stats->tx_bytes += txbytes; 1219a60c0903SNikolay Aleksandrov stats->tx_packets += txpackets; 1220a60c0903SNikolay Aleksandrov } 1221a60c0903SNikolay Aleksandrov } 12224d4fd361SPetr Machata 12234d4fd361SPetr Machata int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 12244d4fd361SPetr Machata { 12254d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 12265a6db04cSIdo Schimmel struct net_bridge_port *p; 12274d4fd361SPetr Machata 12284d4fd361SPetr Machata ASSERT_RTNL(); 12295a6db04cSIdo Schimmel p = br_port_get_check_rtnl(dev); 12305a6db04cSIdo Schimmel if (p) 12315a6db04cSIdo Schimmel vg = nbp_vlan_group(p); 12325a6db04cSIdo Schimmel else if (netif_is_bridge_master(dev)) 12334d4fd361SPetr Machata vg = br_vlan_group(netdev_priv(dev)); 12344d4fd361SPetr Machata else 12354d4fd361SPetr Machata return -EINVAL; 12364d4fd361SPetr Machata 12374d4fd361SPetr Machata *p_pvid = br_get_pvid(vg); 12384d4fd361SPetr Machata return 0; 12394d4fd361SPetr Machata } 12404d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_pvid); 12414d4fd361SPetr Machata 12424d4fd361SPetr Machata int br_vlan_get_info(const struct net_device *dev, u16 vid, 12434d4fd361SPetr Machata struct bridge_vlan_info *p_vinfo) 12444d4fd361SPetr Machata { 12454d4fd361SPetr Machata struct net_bridge_vlan_group *vg; 12464d4fd361SPetr Machata struct net_bridge_vlan *v; 12474d4fd361SPetr Machata struct net_bridge_port *p; 12484d4fd361SPetr Machata 12494d4fd361SPetr Machata ASSERT_RTNL(); 12504d4fd361SPetr Machata p = br_port_get_check_rtnl(dev); 12514d4fd361SPetr Machata if (p) 12524d4fd361SPetr Machata vg = nbp_vlan_group(p); 12532b18d79eSPetr Machata else if (netif_is_bridge_master(dev)) 12542b18d79eSPetr Machata vg = br_vlan_group(netdev_priv(dev)); 12554d4fd361SPetr Machata else 12564d4fd361SPetr Machata return -EINVAL; 12574d4fd361SPetr Machata 12584d4fd361SPetr Machata v = br_vlan_find(vg, vid); 12594d4fd361SPetr Machata if (!v) 12604d4fd361SPetr Machata return -ENOENT; 12614d4fd361SPetr Machata 12624d4fd361SPetr Machata p_vinfo->vid = vid; 12634d4fd361SPetr Machata p_vinfo->flags = v->flags; 12644d4fd361SPetr Machata return 0; 12654d4fd361SPetr Machata } 12664d4fd361SPetr Machata EXPORT_SYMBOL_GPL(br_vlan_get_info); 12679c0ec2e7SMike Manning 12689c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev(const struct net_device *dev) 12699c0ec2e7SMike Manning { 12709c0ec2e7SMike Manning return is_vlan_dev(dev) && 12719c0ec2e7SMike Manning !!(vlan_dev_priv(dev)->flags & VLAN_FLAG_BRIDGE_BINDING); 12729c0ec2e7SMike Manning } 12739c0ec2e7SMike Manning 12749c0ec2e7SMike Manning static int br_vlan_is_bind_vlan_dev_fn(struct net_device *dev, 12759c0ec2e7SMike Manning __always_unused void *data) 12769c0ec2e7SMike Manning { 12779c0ec2e7SMike Manning return br_vlan_is_bind_vlan_dev(dev); 12789c0ec2e7SMike Manning } 12799c0ec2e7SMike Manning 12809c0ec2e7SMike Manning static bool br_vlan_has_upper_bind_vlan_dev(struct net_device *dev) 12819c0ec2e7SMike Manning { 12829c0ec2e7SMike Manning int found; 12839c0ec2e7SMike Manning 12849c0ec2e7SMike Manning rcu_read_lock(); 12859c0ec2e7SMike Manning found = netdev_walk_all_upper_dev_rcu(dev, br_vlan_is_bind_vlan_dev_fn, 12869c0ec2e7SMike Manning NULL); 12879c0ec2e7SMike Manning rcu_read_unlock(); 12889c0ec2e7SMike Manning 12899c0ec2e7SMike Manning return !!found; 12909c0ec2e7SMike Manning } 12919c0ec2e7SMike Manning 12929c0ec2e7SMike Manning struct br_vlan_bind_walk_data { 12939c0ec2e7SMike Manning u16 vid; 12949c0ec2e7SMike Manning struct net_device *result; 12959c0ec2e7SMike Manning }; 12969c0ec2e7SMike Manning 12979c0ec2e7SMike Manning static int br_vlan_match_bind_vlan_dev_fn(struct net_device *dev, 12989c0ec2e7SMike Manning void *data_in) 12999c0ec2e7SMike Manning { 13009c0ec2e7SMike Manning struct br_vlan_bind_walk_data *data = data_in; 13019c0ec2e7SMike Manning int found = 0; 13029c0ec2e7SMike Manning 13039c0ec2e7SMike Manning if (br_vlan_is_bind_vlan_dev(dev) && 13049c0ec2e7SMike Manning vlan_dev_priv(dev)->vlan_id == data->vid) { 13059c0ec2e7SMike Manning data->result = dev; 13069c0ec2e7SMike Manning found = 1; 13079c0ec2e7SMike Manning } 13089c0ec2e7SMike Manning 13099c0ec2e7SMike Manning return found; 13109c0ec2e7SMike Manning } 13119c0ec2e7SMike Manning 13129c0ec2e7SMike Manning static struct net_device * 13139c0ec2e7SMike Manning br_vlan_get_upper_bind_vlan_dev(struct net_device *dev, u16 vid) 13149c0ec2e7SMike Manning { 13159c0ec2e7SMike Manning struct br_vlan_bind_walk_data data = { 13169c0ec2e7SMike Manning .vid = vid, 13179c0ec2e7SMike Manning }; 13189c0ec2e7SMike Manning 13199c0ec2e7SMike Manning rcu_read_lock(); 13209c0ec2e7SMike Manning netdev_walk_all_upper_dev_rcu(dev, br_vlan_match_bind_vlan_dev_fn, 13219c0ec2e7SMike Manning &data); 13229c0ec2e7SMike Manning rcu_read_unlock(); 13239c0ec2e7SMike Manning 13249c0ec2e7SMike Manning return data.result; 13259c0ec2e7SMike Manning } 13269c0ec2e7SMike Manning 13279c0ec2e7SMike Manning static bool br_vlan_is_dev_up(const struct net_device *dev) 13289c0ec2e7SMike Manning { 13299c0ec2e7SMike Manning return !!(dev->flags & IFF_UP) && netif_oper_up(dev); 13309c0ec2e7SMike Manning } 13319c0ec2e7SMike Manning 13329c0ec2e7SMike Manning static void br_vlan_set_vlan_dev_state(const struct net_bridge *br, 13339c0ec2e7SMike Manning struct net_device *vlan_dev) 13349c0ec2e7SMike Manning { 13359c0ec2e7SMike Manning u16 vid = vlan_dev_priv(vlan_dev)->vlan_id; 13369c0ec2e7SMike Manning struct net_bridge_vlan_group *vg; 13379c0ec2e7SMike Manning struct net_bridge_port *p; 13389c0ec2e7SMike Manning bool has_carrier = false; 13399c0ec2e7SMike Manning 13409c0ec2e7SMike Manning list_for_each_entry(p, &br->port_list, list) { 13419c0ec2e7SMike Manning vg = nbp_vlan_group(p); 13429c0ec2e7SMike Manning if (br_vlan_find(vg, vid) && br_vlan_is_dev_up(p->dev)) { 13439c0ec2e7SMike Manning has_carrier = true; 13449c0ec2e7SMike Manning break; 13459c0ec2e7SMike Manning } 13469c0ec2e7SMike Manning } 13479c0ec2e7SMike Manning 13489c0ec2e7SMike Manning if (has_carrier) 13499c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 13509c0ec2e7SMike Manning else 13519c0ec2e7SMike Manning netif_carrier_off(vlan_dev); 13529c0ec2e7SMike Manning } 13539c0ec2e7SMike Manning 13549c0ec2e7SMike Manning static void br_vlan_set_all_vlan_dev_state(struct net_bridge_port *p) 13559c0ec2e7SMike Manning { 13569c0ec2e7SMike Manning struct net_bridge_vlan_group *vg = nbp_vlan_group(p); 13579c0ec2e7SMike Manning struct net_bridge_vlan *vlan; 13589c0ec2e7SMike Manning struct net_device *vlan_dev; 13599c0ec2e7SMike Manning 13609c0ec2e7SMike Manning list_for_each_entry(vlan, &vg->vlan_list, vlist) { 13619c0ec2e7SMike Manning vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, 13629c0ec2e7SMike Manning vlan->vid); 13639c0ec2e7SMike Manning if (vlan_dev) { 13649c0ec2e7SMike Manning if (br_vlan_is_dev_up(p->dev)) 13659c0ec2e7SMike Manning netif_carrier_on(vlan_dev); 13669c0ec2e7SMike Manning else 13679c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(p->br, vlan_dev); 13689c0ec2e7SMike Manning } 13699c0ec2e7SMike Manning } 13709c0ec2e7SMike Manning } 13719c0ec2e7SMike Manning 13729c0ec2e7SMike Manning static void br_vlan_upper_change(struct net_device *dev, 13739c0ec2e7SMike Manning struct net_device *upper_dev, 13749c0ec2e7SMike Manning bool linking) 13759c0ec2e7SMike Manning { 13769c0ec2e7SMike Manning struct net_bridge *br = netdev_priv(dev); 13779c0ec2e7SMike Manning 13789c0ec2e7SMike Manning if (!br_vlan_is_bind_vlan_dev(upper_dev)) 13799c0ec2e7SMike Manning return; 13809c0ec2e7SMike Manning 13819c0ec2e7SMike Manning if (linking) { 13829c0ec2e7SMike Manning br_vlan_set_vlan_dev_state(br, upper_dev); 13839c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, true); 13849c0ec2e7SMike Manning } else { 13859c0ec2e7SMike Manning br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, 13869c0ec2e7SMike Manning br_vlan_has_upper_bind_vlan_dev(dev)); 13879c0ec2e7SMike Manning } 13889c0ec2e7SMike Manning } 13899c0ec2e7SMike Manning 13909c0ec2e7SMike Manning /* Must be protected by RTNL. */ 13919c0ec2e7SMike Manning void br_vlan_bridge_event(struct net_device *dev, unsigned long event, 13929c0ec2e7SMike Manning void *ptr) 13939c0ec2e7SMike Manning { 13949c0ec2e7SMike Manning struct netdev_notifier_changeupper_info *info; 13959c0ec2e7SMike Manning 13969c0ec2e7SMike Manning switch (event) { 13979c0ec2e7SMike Manning case NETDEV_CHANGEUPPER: 13989c0ec2e7SMike Manning info = ptr; 13999c0ec2e7SMike Manning br_vlan_upper_change(dev, info->upper_dev, info->linking); 14009c0ec2e7SMike Manning break; 14019c0ec2e7SMike Manning } 14029c0ec2e7SMike Manning } 14039c0ec2e7SMike Manning 14049c0ec2e7SMike Manning /* Must be protected by RTNL. */ 14059c0ec2e7SMike Manning void br_vlan_port_event(struct net_bridge_port *p, unsigned long event) 14069c0ec2e7SMike Manning { 14079c0ec2e7SMike Manning if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING)) 14089c0ec2e7SMike Manning return; 14099c0ec2e7SMike Manning 14109c0ec2e7SMike Manning switch (event) { 14119c0ec2e7SMike Manning case NETDEV_CHANGE: 14129c0ec2e7SMike Manning case NETDEV_DOWN: 14139c0ec2e7SMike Manning case NETDEV_UP: 14149c0ec2e7SMike Manning br_vlan_set_all_vlan_dev_state(p); 14159c0ec2e7SMike Manning break; 14169c0ec2e7SMike Manning } 14179c0ec2e7SMike Manning } 1418