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 <[email protected]>
---
v2: simplify the logic checking (Thomas Pedersen)
v3: updating the sta last rx activity (Thomas Pedersen)
v4: avoid duplicate assignment (Thomas Pedersen)

 net/mac80211/mesh_plink.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index 4256859..dfeb243 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -361,6 +361,11 @@ static struct sta_info *mesh_peer_init(struct 
ieee80211_sub_if_data *sdata,
 
        spin_lock_bh(&sta->lock);
        sta->last_rx = jiffies;
+       if (sta->plink_state == NL80211_PLINK_ESTAB) {
+               spin_unlock_bh(&sta->lock);
+               return sta;
+       }
+
        sta->sta.supp_rates[band] = rates;
        if (elems->ht_cap_elem &&
            sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT)
-- 
1.7.0.4

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