[NETFILTER] bridge: simplify nf_bridge_pad
Do some simple optimization on the nf_bridge_pad() function
and don't use magic constants. Eliminate a double call and
the #ifdef'd code for CONFIG_BRIDGE_NETFILTER.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 81b2795..97aee76 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -426,7 +426,7 @@
int ptr;
struct net_device *dev;
struct sk_buff *skb2;
- unsigned int mtu, hlen, left, len, ll_rs;
+ unsigned int mtu, hlen, left, len, ll_rs, pad;
int offset;
__be16 not_last_frag;
struct rtable *rt = (struct rtable*)skb->dst;
@@ -556,14 +556,13 @@
left = skb->len - hlen; /* Space per frame */
ptr = raw + hlen; /* Where to start from */
-#ifdef CONFIG_BRIDGE_NETFILTER
/* for bridged IP traffic encapsulated inside f.e. a vlan header,
- * we need to make room for the encapsulating header */
- ll_rs = LL_RESERVED_SPACE_EXTRA(rt->u.dst.dev, nf_bridge_pad(skb));
- mtu -= nf_bridge_pad(skb);
-#else
- ll_rs = LL_RESERVED_SPACE(rt->u.dst.dev);
-#endif
+ * we need to make room for the encapsulating header
+ */
+ pad = nf_bridge_pad(skb);
+ ll_rs = LL_RESERVED_SPACE_EXTRA(rt->u.dst.dev, pad);
+ mtu -= pad;
+
/*
* Fragment the datagram.
*/
