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[PATCH v2] mac80211: add extra checking for RC init upon receiving mesh beacon

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Rate control statistic is flushed whenever the mesh beacon
is received. This may not optimizes the performance of rate
control algorithm. This patch ensures that we return early
from mesh_peer_init if the plink_state is ESTAB. Thus, avoid
calling the rate_control_rate_init again for established mesh
STA.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@xxxxxxxxx>
---
v2: simplify the logic checking (Thomas Pedersen)

 net/mac80211/mesh_plink.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 4256859..a73741c 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -359,6 +359,9 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
 		insert = true;
 	}
 
+	if (sta->plink_state == NL80211_PLINK_ESTAB)
+		return sta;
+
 	spin_lock_bh(&sta->lock);
 	sta->last_rx = jiffies;
 	sta->sta.supp_rates[band] = rates;
-- 
1.7.0.4

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