linux-kernel - [PATCH -next] batadv: Slight optimization of batadv_compare

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 06 Dec 2013 00:18:10 -0800
From:	Joe Perches <joe@...ches.com>
To:	Marek Lindner <mareklindner@...mailbox.ch>,
	Simon Wunderlich <sw@...onwunderlich.de>,
	Antonio Quartulli <antonio@...hcoding.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	b.a.t.m.a.n@...ts.open-mesh.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH -next] batadv: Slight optimization of batadv_compare_eth

Use CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS to check if
this function can be optimized by using the generic
ether_addr_equal.

Remove the unnecessary ?: after the unoptimized memcmp.

Signed-off-by: Joe Perches <joe@...ches.com>
---
 net/batman-adv/main.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index f94f287b..74a7a3f 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -266,7 +266,11 @@ static inline void batadv_dbg(int type __always_unused,
  */
 static inline int batadv_compare_eth(const void *data1, const void *data2)
 {
-	return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
+	return ether_addr_equal(data1, data2);
+#else
+	return memcmp(data1, data2, ETH_ALEN) == 0;
+#endif
 }
 
 /**


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/