If the average value has been rounded to 0 (success),
reset 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 threshold value of 95.
Signed-off-by: Tamizh Chelvam Raja <quic_tamizhr@xxxxxxxxxxx>
Signed-off-by: Karthik M <quic_karm@xxxxxxxxxxx>
---
net/mac80211/mesh_hwmp.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 9b1ce7c3925a..e9fcaff9cc7e 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -298,10 +298,21 @@ 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 has been rounded to 0 (success),
+ * reset 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 threshold value of 95 */
+ 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
