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-rw-r--r--net/mac80211/mesh_hwmp.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 501c783..e8d573d 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -218,12 +218,16 @@ static u32 airtime_link_metric_get(struct ieee80211_local *local,
if (sta->fail_avg >= 100)
return MAX_METRIC;
+
+ if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
+ return MAX_METRIC;
+
err = (sta->fail_avg << ARITH_SHIFT) / 100;
/* bitrate is in units of 100 Kbps, while we need rate in units of
* 1Mbps. This will be corrected on tx_time computation.
*/
- rate = sband->bitrates[sta->last_txrate_idx].bitrate;
+ rate = sband->bitrates[sta->last_tx_rate.idx].bitrate;
tx_time = (device_constant + 10 * test_frame_len / rate);
estimated_retx = ((1 << (2 * ARITH_SHIFT)) / (s_unit - err));
result = (tx_time * estimated_retx) >> (2 * ARITH_SHIFT) ;
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