diff options
Diffstat (limited to 'net/mac80211/mesh_pathtbl.c')
| -rw-r--r-- | net/mac80211/mesh_pathtbl.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index 5845dc21ce8..99c2d360888 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -158,19 +158,25 @@ int mesh_path_add(u8 *dst, struct net_device *dev) if (atomic_add_unless(&sdata->u.sta.mpaths, 1, MESH_MAX_MPATHS) == 0) return -ENOSPC; - read_lock(&pathtbl_resize_lock); - new_mpath = kzalloc(sizeof(struct mesh_path), GFP_KERNEL); if (!new_mpath) { atomic_dec(&sdata->u.sta.mpaths); err = -ENOMEM; goto endadd2; } + new_node = kmalloc(sizeof(struct mpath_node), GFP_KERNEL); + if (!new_node) { + kfree(new_mpath); + atomic_dec(&sdata->u.sta.mpaths); + err = -ENOMEM; + goto endadd2; + } + + read_lock(&pathtbl_resize_lock); memcpy(new_mpath->dst, dst, ETH_ALEN); new_mpath->dev = dev; new_mpath->flags = 0; skb_queue_head_init(&new_mpath->frame_queue); - new_node = kmalloc(sizeof(struct mpath_node), GFP_KERNEL); new_node->mpath = new_mpath; new_mpath->timer.data = (unsigned long) new_mpath; new_mpath->timer.function = mesh_path_timer; @@ -202,7 +208,6 @@ int mesh_path_add(u8 *dst, struct net_device *dev) endadd: spin_unlock(&mesh_paths->hashwlock[hash_idx]); -endadd2: read_unlock(&pathtbl_resize_lock); if (!err && grow) { struct mesh_table *oldtbl, *newtbl; @@ -215,10 +220,12 @@ endadd2: return -ENOMEM; } rcu_assign_pointer(mesh_paths, newtbl); + write_unlock(&pathtbl_resize_lock); + synchronize_rcu(); mesh_table_free(oldtbl, false); - write_unlock(&pathtbl_resize_lock); } +endadd2: return err; } |