diff options
author | Henning Rogge <hrogge@gmail.com> | 2016-02-03 13:58:37 +0100 |
---|---|---|
committer | Johannes Berg <johannes.berg@intel.com> | 2016-02-24 09:04:35 +0100 |
commit | ab1c7906b0bead549065a3a2def5aeda21818c99 (patch) | |
tree | 46bc0624697c12e809b80a6bd3a4c489e8272a88 /net/mac80211/mesh_pathtbl.c | |
parent | mac80211: Remove MPP table entries with MPath (diff) | |
download | linux-ab1c7906b0bead549065a3a2def5aeda21818c99.tar.xz linux-ab1c7906b0bead549065a3a2def5aeda21818c99.zip |
mac80211: let unused MPP table entries timeout
Remember the last time when a mpp table entry is used for
rx or tx and remove them after MESH_PATH_EXPIRE time.
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/mesh_pathtbl.c')
-rw-r--r-- | net/mac80211/mesh_pathtbl.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index 40ed206b0f60..29e50407507a 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -941,6 +941,46 @@ enddel: } /** + * mpp_path_del - delete a mesh proxy path from the table + * + * @addr: addr address (ETH_ALEN length) + * @sdata: local subif + * + * Returns: 0 if successful + */ +static int mpp_path_del(struct ieee80211_sub_if_data *sdata, const u8 *addr) +{ + struct mesh_table *tbl; + struct mesh_path *mpath; + struct mpath_node *node; + struct hlist_head *bucket; + int hash_idx; + int err = 0; + + read_lock_bh(&pathtbl_resize_lock); + tbl = resize_dereference_mpp_paths(); + hash_idx = mesh_table_hash(addr, sdata, tbl); + bucket = &tbl->hash_buckets[hash_idx]; + + spin_lock(&tbl->hashwlock[hash_idx]); + hlist_for_each_entry(node, bucket, list) { + mpath = node->mpath; + if (mpath->sdata == sdata && + ether_addr_equal(addr, mpath->dst)) { + __mesh_path_del(tbl, node); + goto enddel; + } + } + + err = -ENXIO; +enddel: + mesh_paths_generation++; + spin_unlock(&tbl->hashwlock[hash_idx]); + read_unlock_bh(&pathtbl_resize_lock); + return err; +} + +/** * mesh_path_tx_pending - sends pending frames in a mesh path queue * * @mpath: mesh path to activate @@ -1154,6 +1194,17 @@ void mesh_path_expire(struct ieee80211_sub_if_data *sdata) time_after(jiffies, mpath->exp_time + MESH_PATH_EXPIRE)) mesh_path_del(mpath->sdata, mpath->dst); } + + tbl = rcu_dereference(mpp_paths); + for_each_mesh_entry(tbl, node, i) { + if (node->mpath->sdata != sdata) + continue; + mpath = node->mpath; + if ((!(mpath->flags & MESH_PATH_FIXED)) && + time_after(jiffies, mpath->exp_time + MESH_PATH_EXPIRE)) + mpp_path_del(mpath->sdata, mpath->dst); + } + rcu_read_unlock(); } |