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Date: Mon, 2 Mar 2015 19:54:46 -0800
From: Joe Perches <joe@...ches.com>
To: netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 01/14] etherdevice: Add eth_<foo>_addr CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS code
Make the memset possibly more efficient with the appropriate
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS #ifdef
Signed-off-by: Joe Perches <joe@...ches.com>
---
include/linux/etherdevice.h | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 606563e..22ad94a 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -192,7 +192,12 @@ static inline void eth_random_addr(u8 *addr)
*/
static inline void eth_broadcast_addr(u8 *addr)
{
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
+ *(u32 *)addr = 0xffffffff;
+ *(u16 *)(addr + 4) = 0xffff;
+#else
memset(addr, 0xff, ETH_ALEN);
+#endif
}
/**
@@ -203,7 +208,12 @@ static inline void eth_broadcast_addr(u8 *addr)
*/
static inline void eth_zero_addr(u8 *addr)
{
- memset(addr, 0x00, ETH_ALEN);
+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
+ *(u32 *)addr = 0;
+ *(u16 *)(addr + 4) = 0;
+#else
+ memset(addr, 0, ETH_ALEN);
+#endif
}
/**
--
2.1.2
--
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