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mac80211: use compare_ether_addr on MAC addresses instead of memcmp

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Because of the constant size and guaranteed 16 bit alignment, the inline
compare_ether_addr function is much cheaper than calling memcmp.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau
2012-03-01 15:22:09 +01:00
committed by John W. Linville
parent 4d196e4b2f
commit 888d04dfbe
10 changed files with 53 additions and 42 deletions
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5
net/mac80211/sta_info.c
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@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/etherdevice.h>
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/slab.h>
@@ -101,7 +102,7 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
lockdep_is_held(&local->sta_mtx));
while (sta) {
if (sta->sdata == sdata &&
memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
compare_ether_addr(sta->sta.addr, addr) == 0)
break;
sta = rcu_dereference_check(sta->hnext,
lockdep_is_held(&local->sta_mtx));
@@ -124,7 +125,7 @@ struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
while (sta) {
if ((sta->sdata == sdata ||
(sta->sdata->bss && sta->sdata->bss == sdata->bss)) &&
memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
compare_ether_addr(sta->sta.addr, addr) == 0)
break;
sta = rcu_dereference_check(sta->hnext,
lockdep_is_held(&local->sta_mtx));