* [PATCH 13/21] mac8011: slight optimization of addr compare
@ 2013-12-23 5:10 Ding Tianhong
2014-01-06 15:21 ` Johannes Berg
0 siblings, 1 reply; 2+ messages in thread
From: Ding Tianhong @ 2013-12-23 5:10 UTC (permalink / raw)
To: Johannes Berg, John W. Linville, David S. Miller, linux-wireless,
Netdev, linux-kernel@vger.kernel.org
Use the recently added and possibly more efficient
ether_addr_equal_unaligned to instead of memcmp.
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: David Miller <davem@davemloft.net>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
---
net/mac80211/iface.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 7aa9f9d..1773e17 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1497,8 +1497,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
bool used = false;
list_for_each_entry(sdata, &local->interfaces, list) {
- if (memcmp(local->hw.wiphy->addresses[i].addr,
- sdata->vif.addr, ETH_ALEN) == 0) {
+ if (ether_addr_equal_unaligned(local->hw.wiphy->addresses[i].addr, sdata->vif.addr)) {
used = true;
break;
}
@@ -1558,8 +1557,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
val += inc;
list_for_each_entry(sdata, &local->interfaces, list) {
- if (memcmp(tmp_addr, sdata->vif.addr,
- ETH_ALEN) == 0) {
+ if (ether_addr_equal_unaligned(tmp_addr, sdata->vif.addr)) {
used = true;
break;
}
--
1.8.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH 13/21] mac8011: slight optimization of addr compare
2013-12-23 5:10 [PATCH 13/21] mac8011: slight optimization of addr compare Ding Tianhong
@ 2014-01-06 15:21 ` Johannes Berg
0 siblings, 0 replies; 2+ messages in thread
From: Johannes Berg @ 2014-01-06 15:21 UTC (permalink / raw)
To: Ding Tianhong
Cc: John W. Linville, David S. Miller, linux-wireless, Netdev,
linux-kernel@vger.kernel.org
On Mon, 2013-12-23 at 13:10 +0800, Ding Tianhong wrote:
> Use the recently added and possibly more efficient
> ether_addr_equal_unaligned to instead of memcmp.
> - if (memcmp(local->hw.wiphy->addresses[i].addr,
> - sdata->vif.addr, ETH_ALEN) == 0) {
> + if (ether_addr_equal_unaligned(local->hw.wiphy->addresses[i].addr, sdata->vif.addr)) {
This clearly should have some linebreaks.
This code also doesn't care all that much about efficiency, so not sure
it's worth it at all.
johannes
^ permalink raw reply [flat|nested] 2+ messages in thread
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