If the average value in mesh metrics calculation
has been rounded to 0 (success), this resets it to
the smallest nonzero value (similarly to the initialization)
to avoid a case where a single failure would result in
an average value that goes beyond the value
of 95 (Link Failure Threshold).
Signed-off-by: Tamizh Chelvam Raja <quic_tamizhr@xxxxxxxxxxx>
Signed-off-by: Karthik M <quic_karm@xxxxxxxxxxx>
---
Changes since v1:
- Altered the comment to mention "mesh" and thershold value.
- Checkpatch done
---
net/mac80211/mesh_hwmp.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 9b1ce7c3925a..f89cbcf212d5 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -298,10 +298,23 @@ void ieee80211s_update_metric(struct ieee80211_local *local,
{
struct ieee80211_tx_info *txinfo = st->info;
int failed;
+ u32 fail_avg;
struct rate_info rinfo;
failed = !(txinfo->flags & IEEE80211_TX_STAT_ACK);
+ fail_avg = ewma_mesh_fail_avg_read(&sta->mesh->fail_avg);
+ if (!fail_avg) {
+ /* If the average value in mesh metrics calculation
+ * has been rounded to 0 (success), this resets it to
+ * the smallest nonzero value (similarly to the initialization)
+ * to avoid a case where a single failure would result in
+ * an average value that goes beyond the value
+ * of 95 (Link Failure Threshold)
+ */
+ ewma_mesh_fail_avg_add(&sta->mesh->fail_avg, 1);
+ }
+
/* moving average, scaled to 100.
* feed failure as 100 and success as 0
*/
--
2.17.1
