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authorPedersen, Thomas <twp@qca.qualcomm.com>2016-09-06 11:59:00 -0700
committerJohannes Berg <johannes.berg@intel.com>2016-09-12 12:27:14 +0200
commit5df20f2141eadb5430caaad20eceac61cfe0f139 (patch)
tree9eafed51548165087bd7c490e72cd30ccf39bdfb /net
parentdf6ef5d8a87ace995d5c10a7bd684be05911a321 (diff)
downloadlinux-stericsson-5df20f2141eadb5430caaad20eceac61cfe0f139.tar.gz
mac80211: make mpath path fixing more robust
A fixed mpath was not quite being treated as such: 1) if a PERR frame was received, a fixed mpath was deactivated. 2) queued path discovery for fixed mpath was potentially being considered, changing mpath state. 3) other mpath flags were potentially being inherited when fixing the mpath. Just assign PATH_FIXED and SN_VALID. This solves several issues when fixing a mesh path in one direction. The reverse direction mpath should probably also be fixed, or root announcements at least be enabled. Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/mesh_hwmp.c3
-rw-r--r--net/mac80211/mesh_pathtbl.c2
2 files changed, 3 insertions, 2 deletions
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 8f9c3bde835f..faccef977670 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -746,6 +746,7 @@ static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
sta = next_hop_deref_protected(mpath);
if (mpath->flags & MESH_PATH_ACTIVE &&
ether_addr_equal(ta, sta->sta.addr) &&
+ !(mpath->flags & MESH_PATH_FIXED) &&
(!(mpath->flags & MESH_PATH_SN_VALID) ||
SN_GT(target_sn, mpath->sn) || target_sn == 0)) {
mpath->flags &= ~MESH_PATH_ACTIVE;
@@ -1012,7 +1013,7 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
goto enddiscovery;
spin_lock_bh(&mpath->state_lock);
- if (mpath->flags & MESH_PATH_DELETED) {
+ if (mpath->flags & (MESH_PATH_DELETED | MESH_PATH_FIXED)) {
spin_unlock_bh(&mpath->state_lock);
goto enddiscovery;
}
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 6db2ddfa0695..f0e6175a9821 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -826,7 +826,7 @@ void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop)
mpath->metric = 0;
mpath->hop_count = 0;
mpath->exp_time = 0;
- mpath->flags |= MESH_PATH_FIXED;
+ mpath->flags = MESH_PATH_FIXED | MESH_PATH_SN_VALID;
mesh_path_activate(mpath);
spin_unlock_bh(&mpath->state_lock);
mesh_path_tx_pending(mpath);