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Commit 22f728f8 authored by David S. Miller's avatar David S. Miller
Browse files

ipv4: Always call ip_options_build() after rest of IP header is filled in. 



This will allow ip_options_build() to reliably look at the values of
iph->{daddr,saddr}

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0374d9ce

net/ipv4/ip_output.c

+5 −4
Original line number Diff line number Diff line
@@ -1327,10 +1327,6 @@ struct sk_buff *__ip_make_skb(struct sock *sk, 
	iph = (struct iphdr *)skb->data;

	iph->version = 4;

	iph->ihl = 5;

	if (opt) {

		iph->ihl += opt->optlen>>2;

		ip_options_build(skb, opt, cork->addr, rt, 0);

	}

	iph->tos = inet->tos;

	iph->frag_off = df;

	ip_select_ident(iph, &rt->dst, sk);
@@ -1339,6 +1335,11 @@ struct sk_buff *__ip_make_skb(struct sock *sk, 
	iph->saddr = fl4->saddr;

	iph->daddr = fl4->daddr;



	if (opt) {

		iph->ihl += opt->optlen>>2;

		ip_options_build(skb, opt, cork->addr, rt, 0);

	}



	skb->priority = sk->sk_priority;

	skb->mark = sk->sk_mark;

	/*