bridge: netfilter: Use ether_addr_copy

Convert the uses of memcpy to ether_addr_copy because
for some architectures it is smaller and faster.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/bridge/br_netfilter.c

@@ -506,7 +506,7 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
 					       1);
 				return 0;
 			}
-			memcpy(eth_hdr(skb)->h_dest, dev->dev_addr, ETH_ALEN);
+			ether_addr_copy(eth_hdr(skb)->h_dest, dev->dev_addr);
 			skb->pkt_type = PACKET_HOST;
 		}
 	} else {

net/bridge/netfilter/ebt_among.c

@@ -28,7 +28,7 @@ static bool ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh,
 	uint32_t cmp[2] = { 0, 0 };
 	int key = ((const unsigned char *)mac)[5];
 
-	memcpy(((char *) cmp) + 2, mac, ETH_ALEN);
+	ether_addr_copy(((char *) cmp) + 2, mac);
 	start = wh->table[key];
 	limit = wh->table[key + 1];
 	if (ip) {

net/bridge/netfilter/ebt_dnat.c

@@ -22,7 +22,7 @@ ebt_dnat_tg(struct sk_buff *skb, const struct xt_action_param *par)
 	if (!skb_make_writable(skb, 0))
 		return EBT_DROP;
 
-	memcpy(eth_hdr(skb)->h_dest, info->mac, ETH_ALEN);
+	ether_addr_copy(eth_hdr(skb)->h_dest, info->mac);
 	return info->target;
 }
 

net/bridge/netfilter/ebt_redirect.c

@@ -25,10 +25,10 @@ ebt_redirect_tg(struct sk_buff *skb, const struct xt_action_param *par)
 
 	if (par->hooknum != NF_BR_BROUTING)
 		/* rcu_read_lock()ed by nf_hook_slow */
-		memcpy(eth_hdr(skb)->h_dest,
-		       br_port_get_rcu(par->in)->br->dev->dev_addr, ETH_ALEN);
+		ether_addr_copy(eth_hdr(skb)->h_dest,
+				br_port_get_rcu(par->in)->br->dev->dev_addr);
 	else
-		memcpy(eth_hdr(skb)->h_dest, par->in->dev_addr, ETH_ALEN);
+		ether_addr_copy(eth_hdr(skb)->h_dest, par->in->dev_addr);
 	skb->pkt_type = PACKET_HOST;
 	return info->target;
 }

net/bridge/netfilter/ebt_snat.c

@@ -24,7 +24,7 @@ ebt_snat_tg(struct sk_buff *skb, const struct xt_action_param *par)
 	if (!skb_make_writable(skb, 0))
 		return EBT_DROP;
 
-	memcpy(eth_hdr(skb)->h_source, info->mac, ETH_ALEN);
+	ether_addr_copy(eth_hdr(skb)->h_source, info->mac);
 	if (!(info->target & NAT_ARP_BIT) &&
 	    eth_hdr(skb)->h_proto == htons(ETH_P_ARP)) {
 		const struct arphdr *ap;