Patchwork ipw2200: use is_zero_ether_addr() and is_broadcast_ether_addr()

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Submitter Wei Yongjun
Date Aug. 23, 2012, 6:54 a.m.
Message ID <CAPgLHd_K=bbQ=zpKY8kW3HCGeuE3GwCCQOAg+gJoFdCv9SnVrg@mail.gmail.com>
Download mbox | patch
Permalink /patch/179522/
State Not Applicable
Delegated to: David Miller
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Comments

Wei Yongjun - Aug. 23, 2012, 6:54 a.m.
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Using is_zero_ether_addr() and is_broadcast_ether_addr() instead of
directly use memcmp() to determine if the ethernet address is all zeros.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
 drivers/net/wireless/ipw2x00/ipw2200.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)



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Stanislav Yakovlev - Aug. 23, 2012, 9:13 p.m.
Hi,

On 23 August 2012 10:54, Wei Yongjun <weiyj.lk@gmail.com> wrote:
> From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
>
> Using is_zero_ether_addr() and is_broadcast_ether_addr() instead of
> directly use memcmp() to determine if the ethernet address is all zeros.
>
> spatch with a semantic match is used to found this problem.
> (http://coccinelle.lip6.fr/)
>
> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
> ---
>  drivers/net/wireless/ipw2x00/ipw2200.c | 11 ++---------
>  1 file changed, 2 insertions(+), 9 deletions(-)

Looks fine, thanks.

Stanislav.
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Patch

diff --git a/drivers/net/wireless/ipw2x00/ipw2200.c b/drivers/net/wireless/ipw2x00/ipw2200.c
index 0df4591..935120f 100644
--- a/drivers/net/wireless/ipw2x00/ipw2200.c
+++ b/drivers/net/wireless/ipw2x00/ipw2200.c
@@ -9037,18 +9037,11 @@  static int ipw_wx_set_wap(struct net_device *dev,
 {
 	struct ipw_priv *priv = libipw_priv(dev);
 
-	static const unsigned char any[] = {
-		0xff, 0xff, 0xff, 0xff, 0xff, 0xff
-	};
-	static const unsigned char off[] = {
-		0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-	};
-
 	if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
 		return -EINVAL;
 	mutex_lock(&priv->mutex);
-	if (!memcmp(any, wrqu->ap_addr.sa_data, ETH_ALEN) ||
-	    !memcmp(off, wrqu->ap_addr.sa_data, ETH_ALEN)) {
+	if (is_broadcast_ether_addr(wrqu->ap_addr.sa_data) ||
+	    is_zero_ether_addr(wrqu->ap_addr.sa_data)) {
 		/* we disable mandatory BSSID association */
 		IPW_DEBUG_WX("Setting AP BSSID to ANY\n");
 		priv->config &= ~CFG_STATIC_BSSID;