diff options
| author |   Manoharan, Rajkumar <rmanohar@qca.qualcomm.com> | 2017-02-14 12:27:16 -0800 |
|---|---|---|
| committer |   Johannes Berg <johannes.berg@intel.com> | 2017-03-06 09:21:21 +0100 |
| commit | 3eb0928fc3e4b4702462164b399acddb7f0f09fd (patch) | |
| tree | a65b5465141c89095abf3a7021019b1aeeafba57 /net/mac80211/mesh_pathtbl.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
| download | linux-dev-3eb0928fc3e4b4702462164b399acddb7f0f09fd.tar.xz linux-dev-3eb0928fc3e4b4702462164b399acddb7f0f09fd.zip | |
mac80211: use DECLARE_EWMA for mesh_fail_avg
As moving average is not considering fractional part, it will
get stuck at the same level after certain state. For example,
with current values, it can get stuck at 96. Fortunately the
current threshold 95%, but if it were increased to 96 or more
mesh paths would never be deactivated. Fix failure average
movement by using EWMA helpers, which does take into account
fractional parts.
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
[johannes: pick a larger EWMA factor for more precision with
the limited range that we will feed into it, adjust to new API]
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 | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index f0e6175a9821..98a3b1c0c338 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -829,6 +829,9 @@ void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop) mpath->flags = MESH_PATH_FIXED | MESH_PATH_SN_VALID; mesh_path_activate(mpath); spin_unlock_bh(&mpath->state_lock); + ewma_mesh_fail_avg_init(&next_hop->mesh->fail_avg); + /* init it at a low value - 0 start is tricky */ + ewma_mesh_fail_avg_add(&next_hop->mesh->fail_avg, 1); mesh_path_tx_pending(mpath); } |