Return-path: Received: from mail-yx0-f174.google.com ([209.85.213.174]:41444 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755159Ab2GXBSA (ORCPT ); Mon, 23 Jul 2012 21:18:00 -0400 Received: by yenl2 with SMTP id l2so6152204yen.19 for ; Mon, 23 Jul 2012 18:17:59 -0700 (PDT) From: Chun-Yeow Yeoh To: linux-wireless@vger.kernel.org Cc: johannes@sipsolutions.net, devel@lists.open80211s.org, Chun-Yeow Yeoh Subject: [PATCH v3] mac80211: add extra checking for RC init upon receiving mesh beacon Date: Tue, 24 Jul 2012 09:15:54 +0800 Message-Id: <1343092554-17734-1-git-send-email-yeohchunyeow@gmail.com> (sfid-20120724_031805_304161_AD9A3265) Sender: linux-wireless-owner@vger.kernel.org List-ID: 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 --- v2: simplify the logic checking (Thomas Pedersen) v3: updating the sta last rx activity (Thomas Pedersen) net/mac80211/mesh_plink.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index 4256859..4f5740e 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -360,6 +360,12 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, } spin_lock_bh(&sta->lock); + if (sta->plink_state == NL80211_PLINK_ESTAB) { + sta->last_rx = jiffies; + spin_unlock_bh(&sta->lock); + return sta; + } + sta->last_rx = jiffies; sta->sta.supp_rates[band] = rates; if (elems->ht_cap_elem && -- 1.7.0.4