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mac80211: mesh locking fixes

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mesh_queue_preq is invoked invoked from both user (work queue) and
softirq (timer) context, so the _bh version of spinlock needs to be
used. Also, the mpath->state_lock should be softirq safe as well.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Javier Cardona 2011-08-09 16:45:06 -07:00 committed by John W. Linville
parent 86d7f9f35d
commit a6965c44e9
1 changed files with 2 additions and 2 deletions
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4
net/mac80211/mesh_pathtbl.c
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@ -654,12 +654,12 @@ int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata)
mpath = node->mpath;
if (mpath->sdata == sdata &&
memcmp(addr, mpath->dst, ETH_ALEN) == 0) {
spin_lock(&mpath->state_lock);
spin_lock_bh(&mpath->state_lock);
mpath->flags |= MESH_PATH_RESOLVING;
hlist_del_rcu(&node->list);
call_rcu(&node->rcu, mesh_path_node_reclaim);
atomic_dec(&tbl->entries);
spin_unlock(&mpath->state_lock);
spin_unlock_bh(&mpath->state_lock);
goto enddel;
}
}