diff options
Diffstat (limited to 'net/bridge/br_vlan.c')
-rw-r--r-- | net/bridge/br_vlan.c | 107 |
1 files changed, 66 insertions, 41 deletions
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index ad7e4f6..ffaa6d9 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -54,9 +54,9 @@ static void __vlan_add_flags(struct net_bridge_vlan *v, u16 flags) struct net_bridge_vlan_group *vg; if (br_vlan_is_master(v)) - vg = v->br->vlgrp; + vg = br_vlan_group(v->br); else - vg = v->port->vlgrp; + vg = nbp_vlan_group(v->port); if (flags & BRIDGE_VLAN_INFO_PVID) __vlan_add_pvid(vg, v->vid); @@ -91,11 +91,16 @@ static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br, static void __vlan_add_list(struct net_bridge_vlan *v) { + struct net_bridge_vlan_group *vg; struct list_head *headp, *hpos; struct net_bridge_vlan *vent; - headp = br_vlan_is_master(v) ? &v->br->vlgrp->vlan_list : - &v->port->vlgrp->vlan_list; + if (br_vlan_is_master(v)) + vg = br_vlan_group(v->br); + else + vg = nbp_vlan_group(v->port); + + headp = &vg->vlan_list; list_for_each_prev(hpos, headp) { vent = list_entry(hpos, struct net_bridge_vlan, vlist); if (v->vid < vent->vid) @@ -137,14 +142,16 @@ static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br, */ static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid) { + struct net_bridge_vlan_group *vg; struct net_bridge_vlan *masterv; - masterv = br_vlan_find(br->vlgrp, vid); + vg = br_vlan_group(br); + masterv = br_vlan_find(vg, vid); if (!masterv) { /* missing global ctx, create it now */ if (br_vlan_add(br, vid, 0)) return NULL; - masterv = br_vlan_find(br->vlgrp, vid); + masterv = br_vlan_find(vg, vid); if (WARN_ON(!masterv)) return NULL; } @@ -155,11 +162,14 @@ static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid static void br_vlan_put_master(struct net_bridge_vlan *masterv) { + struct net_bridge_vlan_group *vg; + if (!br_vlan_is_master(masterv)) return; + vg = br_vlan_group(masterv->br); if (atomic_dec_and_test(&masterv->refcnt)) { - rhashtable_remove_fast(&masterv->br->vlgrp->vlan_hash, + rhashtable_remove_fast(&vg->vlan_hash, &masterv->vnode, br_vlan_rht_params); __vlan_del_list(masterv); kfree_rcu(masterv, rcu); @@ -189,12 +199,12 @@ static int __vlan_add(struct net_bridge_vlan *v, u16 flags) if (br_vlan_is_master(v)) { br = v->br; dev = br->dev; - vg = br->vlgrp; + vg = br_vlan_group(br); } else { p = v->port; br = p->br; dev = p->dev; - vg = p->vlgrp; + vg = nbp_vlan_group(p); } if (p) { @@ -266,10 +276,10 @@ static int __vlan_del(struct net_bridge_vlan *v) int err = 0; if (br_vlan_is_master(v)) { - vg = v->br->vlgrp; + vg = br_vlan_group(v->br); } else { p = v->port; - vg = v->port->vlgrp; + vg = nbp_vlan_group(v->port); masterv = v->brvlan; } @@ -305,7 +315,7 @@ static void __vlan_flush(struct net_bridge_vlan_group *vlgrp) list_for_each_entry_safe(vlan, tmp, &vlgrp->vlan_list, vlist) __vlan_del(vlan); rhashtable_destroy(&vlgrp->vlan_hash); - kfree(vlgrp); + kfree_rcu(vlgrp, rcu); } struct sk_buff *br_handle_vlan(struct net_bridge *br, @@ -467,7 +477,7 @@ bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) if (!br->vlan_enabled) return true; - vg = p->vlgrp; + vg = nbp_vlan_group(p); if (!vg || !vg->num_vlans) return false; @@ -493,12 +503,14 @@ bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid) */ int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) { + struct net_bridge_vlan_group *vg; struct net_bridge_vlan *vlan; int ret; ASSERT_RTNL(); - vlan = br_vlan_find(br->vlgrp, vid); + vg = br_vlan_group(br); + vlan = br_vlan_find(vg, vid); if (vlan) { if (!br_vlan_is_brentry(vlan)) { /* Trying to change flags of non-existent bridge vlan */ @@ -513,7 +525,7 @@ int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) } atomic_inc(&vlan->refcnt); vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY; - br->vlgrp->num_vlans++; + vg->num_vlans++; } __vlan_add_flags(vlan, flags); return 0; @@ -541,11 +553,13 @@ int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags) */ int br_vlan_delete(struct net_bridge *br, u16 vid) { + struct net_bridge_vlan_group *vg; struct net_bridge_vlan *v; ASSERT_RTNL(); - v = br_vlan_find(br->vlgrp, vid); + vg = br_vlan_group(br); + v = br_vlan_find(vg, vid); if (!v || !br_vlan_is_brentry(v)) return -ENOENT; @@ -626,6 +640,7 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) int err = 0; struct net_bridge_port *p; struct net_bridge_vlan *vlan; + struct net_bridge_vlan_group *vg; __be16 oldproto; if (br->vlan_proto == proto) @@ -633,7 +648,8 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) /* Add VLANs for the new proto to the device filter. */ list_for_each_entry(p, &br->port_list, list) { - list_for_each_entry(vlan, &p->vlgrp->vlan_list, vlist) { + vg = nbp_vlan_group(p); + list_for_each_entry(vlan, &vg->vlan_list, vlist) { err = vlan_vid_add(p->dev, proto, vlan->vid); if (err) goto err_filt; @@ -647,19 +663,23 @@ int __br_vlan_set_proto(struct net_bridge *br, __be16 proto) br_recalculate_fwd_mask(br); /* Delete VLANs for the old proto from the device filter. */ - list_for_each_entry(p, &br->port_list, list) - list_for_each_entry(vlan, &p->vlgrp->vlan_list, vlist) + list_for_each_entry(p, &br->port_list, list) { + vg = nbp_vlan_group(p); + list_for_each_entry(vlan, &vg->vlan_list, vlist) vlan_vid_del(p->dev, oldproto, vlan->vid); + } return 0; err_filt: - list_for_each_entry_continue_reverse(vlan, &p->vlgrp->vlan_list, vlist) + list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) vlan_vid_del(p->dev, proto, vlan->vid); - list_for_each_entry_continue_reverse(p, &br->port_list, list) - list_for_each_entry(vlan, &p->vlgrp->vlan_list, vlist) + list_for_each_entry_continue_reverse(p, &br->port_list, list) { + vg = nbp_vlan_group(p); + list_for_each_entry(vlan, &vg->vlan_list, vlist) vlan_vid_del(p->dev, proto, vlan->vid); + } return err; } @@ -703,11 +723,11 @@ static void br_vlan_disable_default_pvid(struct net_bridge *br) /* Disable default_pvid on all ports where it is still * configured. */ - if (vlan_default_pvid(br->vlgrp, pvid)) + if (vlan_default_pvid(br_vlan_group(br), pvid)) br_vlan_delete(br, pvid); list_for_each_entry(p, &br->port_list, list) { - if (vlan_default_pvid(p->vlgrp, pvid)) + if (vlan_default_pvid(nbp_vlan_group(p), pvid)) nbp_vlan_delete(p, pvid); } @@ -717,6 +737,7 @@ static void br_vlan_disable_default_pvid(struct net_bridge *br) int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid) { const struct net_bridge_vlan *pvent; + struct net_bridge_vlan_group *vg; struct net_bridge_port *p; u16 old_pvid; int err = 0; @@ -737,8 +758,9 @@ int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid) /* Update default_pvid config only if we do not conflict with * user configuration. */ - pvent = br_vlan_find(br->vlgrp, pvid); - if ((!old_pvid || vlan_default_pvid(br->vlgrp, old_pvid)) && + vg = br_vlan_group(br); + pvent = br_vlan_find(vg, pvid); + if ((!old_pvid || vlan_default_pvid(vg, old_pvid)) && (!pvent || !br_vlan_should_use(pvent))) { err = br_vlan_add(br, pvid, BRIDGE_VLAN_INFO_PVID | @@ -754,9 +776,10 @@ int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid) /* Update default_pvid config only if we do not conflict with * user configuration. */ + vg = nbp_vlan_group(p); if ((old_pvid && - !vlan_default_pvid(p->vlgrp, old_pvid)) || - br_vlan_find(p->vlgrp, pvid)) + !vlan_default_pvid(vg, old_pvid)) || + br_vlan_find(vg, pvid)) continue; err = nbp_vlan_add(p, pvid, @@ -825,17 +848,19 @@ unlock: int br_vlan_init(struct net_bridge *br) { + struct net_bridge_vlan_group *vg; int ret = -ENOMEM; - br->vlgrp = kzalloc(sizeof(struct net_bridge_vlan_group), GFP_KERNEL); - if (!br->vlgrp) + vg = kzalloc(sizeof(*vg), GFP_KERNEL); + if (!vg) goto out; - ret = rhashtable_init(&br->vlgrp->vlan_hash, &br_vlan_rht_params); + ret = rhashtable_init(&vg->vlan_hash, &br_vlan_rht_params); if (ret) goto err_rhtbl; - INIT_LIST_HEAD(&br->vlgrp->vlan_list); + INIT_LIST_HEAD(&vg->vlan_list); br->vlan_proto = htons(ETH_P_8021Q); br->default_pvid = 1; + rcu_assign_pointer(br->vlgrp, vg); ret = br_vlan_add(br, 1, BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED | BRIDGE_VLAN_INFO_BRENTRY); @@ -846,9 +871,9 @@ out: return ret; err_vlan_add: - rhashtable_destroy(&br->vlgrp->vlan_hash); + rhashtable_destroy(&vg->vlan_hash); err_rhtbl: - kfree(br->vlgrp); + kfree(vg); goto out; } @@ -866,9 +891,7 @@ int nbp_vlan_init(struct net_bridge_port *p) if (ret) goto err_rhtbl; INIT_LIST_HEAD(&vg->vlan_list); - /* Make sure everything's committed before publishing vg */ - smp_wmb(); - p->vlgrp = vg; + rcu_assign_pointer(p->vlgrp, vg); if (p->br->default_pvid) { ret = nbp_vlan_add(p, p->br->default_pvid, BRIDGE_VLAN_INFO_PVID | @@ -897,7 +920,7 @@ int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags) ASSERT_RTNL(); - vlan = br_vlan_find(port->vlgrp, vid); + vlan = br_vlan_find(nbp_vlan_group(port), vid); if (vlan) { __vlan_add_flags(vlan, flags); return 0; @@ -925,7 +948,7 @@ int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) ASSERT_RTNL(); - v = br_vlan_find(port->vlgrp, vid); + v = br_vlan_find(nbp_vlan_group(port), vid); if (!v) return -ENOENT; br_fdb_find_delete_local(port->br, port, port->dev->dev_addr, vid); @@ -936,12 +959,14 @@ int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) void nbp_vlan_flush(struct net_bridge_port *port) { + struct net_bridge_vlan_group *vg; struct net_bridge_vlan *vlan; ASSERT_RTNL(); - list_for_each_entry(vlan, &port->vlgrp->vlan_list, vlist) + vg = nbp_vlan_group(port); + list_for_each_entry(vlan, &vg->vlan_list, vlist) vlan_vid_del(port->dev, port->br->vlan_proto, vlan->vid); - __vlan_flush(nbp_vlan_group(port)); + __vlan_flush(vg); } |