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Commit 6255e5ea authored by Julian Anastasov's avatar Julian Anastasov Committed by David S. Miller
Browse files

ipv4: optimize fib_compute_spec_dst call in ip_options_echo 



Move fib_compute_spec_dst at the only place where it
is needed.

Signed-off-by: default avatarJulian Anastasov <ja@ssi.bg>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a16a0d2f

net/ipv4/ip_options.c

+2 −3
Original line number Diff line number Diff line
@@ -93,7 +93,6 @@ int ip_options_echo(struct ip_options *dopt, struct sk_buff *skb) 
	unsigned char *sptr, *dptr;

	int soffset, doffset;

	int	optlen;

	__be32	daddr;



	memset(dopt, 0, sizeof(struct ip_options));
@@ -105,8 +104,6 @@ int ip_options_echo(struct ip_options *dopt, struct sk_buff *skb) 
	sptr = skb_network_header(skb);

	dptr = dopt->__data;



	daddr = fib_compute_spec_dst(skb);



	if (sopt->rr) {

		optlen  = sptr[sopt->rr+1];

		soffset = sptr[sopt->rr+2];
@@ -180,6 +177,8 @@ int ip_options_echo(struct ip_options *dopt, struct sk_buff *skb) 
				doffset -= 4;

		}

		if (doffset > 3) {

			__be32 daddr = fib_compute_spec_dst(skb);



			memcpy(&start[doffset-1], &daddr, 4);

			dopt->faddr = faddr;

			dptr[0] = start[0];