diff options
| author | Jesse Jones <jjones@cococorp.com> | 2015-06-13 00:13:09 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-07-17 16:38:14 +0300 |
| commit | d82547106ff9dee43e6ee4f4b3d70b5314ae266f (patch) | |
| tree | 8a289f8d7d25eaeedbd3a14624187f3e7079c115 /net/mac80211/mesh_hwmp.c | |
| parent | 703ee73a41a74210dde9050c6669053866b133a0 (diff) | |
| download | linux-d82547106ff9dee43e6ee4f4b3d70b5314ae266f.tar.xz | |
mac80211: mesh: don't invalidate SN on discovery failure
The 2012 spec mentions that path SNs can be invalid when created (see
section 13.10.8.4 table 13-9) but AFAICT never talks about invalidating
SNs. Which makes sense: if we have figured out the path to a target at a
certain SN then we want to remember that fact. Failing to do so can lead
to routing loops because if we don't have a valid SN then we have no way
of knowing whether an incoming path message leads to or away from the
target.
However currently when discovery fails we zero out mpath->flags which
clears MESH_PATH_SN_VALID. This patch fixes that so that only the
discovery relevant flags are cleared.
Signed-off-by: Alexis Green <agreen@cococorp.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/mesh_hwmp.c')
| -rw-r--r-- | net/mac80211/mesh_hwmp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index d31d48f403f5..5ed38c5a998f 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -1179,7 +1179,9 @@ void mesh_path_timer(unsigned long data) spin_unlock_bh(&mpath->state_lock); mesh_queue_preq(mpath, 0); } else { - mpath->flags = 0; + mpath->flags &= ~(MESH_PATH_RESOLVING | + MESH_PATH_RESOLVED | + MESH_PATH_REQ_QUEUED); mpath->exp_time = jiffies; spin_unlock_bh(&mpath->state_lock); if (!mpath->is_gate && mesh_gate_num(sdata) > 0) { |