Return-path: Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:37280 "EHLO mail2-relais-roc.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756218Ab3L3RTJ (ORCPT ); Mon, 30 Dec 2013 12:19:09 -0500 From: Julia Lawall To: Christian Lamparter Cc: kernel-janitors@vger.kernel.org, "John W. Linville" , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 11/11] carl9170: use ether_addr_equal_64bits Date: Mon, 30 Dec 2013 19:15:07 +0100 Message-Id: <1388427307-8691-12-git-send-email-Julia.Lawall@lip6.fr> (sfid-20131230_182405_855650_D3F899B1) In-Reply-To: <1388427307-8691-1-git-send-email-Julia.Lawall@lip6.fr> References: <1388427307-8691-1-git-send-email-Julia.Lawall@lip6.fr> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Julia Lawall Ether_addr_equal_64bits is more efficient than ether_addr_equal, and can be used when each argument is an array within a structure that contains at least two bytes of data beyond the array. The structures involved are: ieee80211_hdr defined in include/linux/ieee80211.h, ieee80211_bar defined in include/linux/ieee80211.h and ath_common defined in drivers/net/wireless/ath/ath.h This was done using Coccinelle (http://coccinelle.lip6.fr/). Signed-off-by: Julia Lawall --- The semantic patch used is rather long and can be found in message 0 of this patch series. drivers/net/wireless/ath/carl9170/rx.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c index e935f61..acd7ddc 100644 --- a/drivers/net/wireless/ath/carl9170/rx.c +++ b/drivers/net/wireless/ath/carl9170/rx.c @@ -536,7 +536,7 @@ static void carl9170_ps_beacon(struct ar9170 *ar, void *data, unsigned int len) return; /* and only beacons from the associated BSSID, please */ - if (!ether_addr_equal(hdr->addr3, ar->common.curbssid) || + if (!ether_addr_equal_64bits(hdr->addr3, ar->common.curbssid) || !ar->common.curaid) return; @@ -602,8 +602,8 @@ static void carl9170_ba_check(struct ar9170 *ar, void *data, unsigned int len) if (bar->start_seq_num == entry_bar->start_seq_num && TID_CHECK(bar->control, entry_bar->control) && - ether_addr_equal(bar->ra, entry_bar->ta) && - ether_addr_equal(bar->ta, entry_bar->ra)) { + ether_addr_equal_64bits(bar->ra, entry_bar->ta) && + ether_addr_equal_64bits(bar->ta, entry_bar->ra)) { struct ieee80211_tx_info *tx_info; tx_info = IEEE80211_SKB_CB(entry_skb);