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-rw-r--r--include/linux/etherdevice.h16
-rw-r--r--net/ethernet/eth.c17
2 files changed, 18 insertions, 15 deletions
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 4522c71..cc84934 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -104,6 +104,22 @@ static inline void random_ether_addr(u8 *addr)
addr [0] &= 0xfe; /* clear multicast bit */
addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
}
+
+/**
+ * compare_ether_addr - Compare two Ethernet addresses
+ * @addr1: Pointer to a six-byte array containing the Ethernet address
+ * @addr2 Pointer other six-byte array containing the Ethernet address
+ *
+ * Compare two ethernet addresses, returns 0 if equal
+ */
+static inline unsigned compare_ether_addr(const u8 *_a, const u8 *_b)
+{
+ const u16 *a = (const u16 *) _a;
+ const u16 *b = (const u16 *) _b;
+
+ BUILD_BUG_ON(ETH_ALEN != 6);
+ return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])) != 0;
+}
#endif /* __KERNEL__ */
#endif /* _LINUX_ETHERDEVICE_H */
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index 68a5ca8..e245773 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -146,19 +146,6 @@ int eth_rebuild_header(struct sk_buff *skb)
return 0;
}
-static inline unsigned int compare_eth_addr(const unsigned char *__a, const unsigned char *__b)
-{
- const unsigned short *dest = (unsigned short *) __a;
- const unsigned short *devaddr = (unsigned short *) __b;
- unsigned int res;
-
- BUILD_BUG_ON(ETH_ALEN != 6);
- res = ((dest[0] ^ devaddr[0]) |
- (dest[1] ^ devaddr[1]) |
- (dest[2] ^ devaddr[2])) != 0;
-
- return res;
-}
/*
* Determine the packet's protocol ID. The rule here is that we
@@ -176,7 +163,7 @@ __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
eth = eth_hdr(skb);
if (*eth->h_dest&1) {
- if (!compare_eth_addr(eth->h_dest, dev->broadcast))
+ if (!compare_ether_addr(eth->h_dest, dev->broadcast))
skb->pkt_type = PACKET_BROADCAST;
else
skb->pkt_type = PACKET_MULTICAST;
@@ -191,7 +178,7 @@ __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
*/
else if(1 /*dev->flags&IFF_PROMISC*/) {
- if (unlikely(compare_eth_addr(eth->h_dest, dev->dev_addr)))
+ if (unlikely(compare_ether_addr(eth->h_dest, dev->dev_addr)))
skb->pkt_type = PACKET_OTHERHOST;
}
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