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Commit fd841326 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

[NETFILTER]: Fix ECN target TCP marking 



An incorrect check made it bail out before doing anything.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a5ea169c

net/ipv4/netfilter/ipt_ECN.c

+4 −4
Original line number Diff line number Diff line
@@ -61,10 +61,10 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo, int inward) 
	if (!tcph)

		return 0;



	if (!(einfo->operation & IPT_ECN_OP_SET_ECE

	      || tcph->ece == einfo->proto.tcp.ece)

	    && (!(einfo->operation & IPT_ECN_OP_SET_CWR

		  || tcph->cwr == einfo->proto.tcp.cwr)))

	if ((!(einfo->operation & IPT_ECN_OP_SET_ECE) ||

	     tcph->ece == einfo->proto.tcp.ece) &&

	    ((!(einfo->operation & IPT_ECN_OP_SET_CWR) ||

	     tcph->cwr == einfo->proto.tcp.cwr)))

		return 1;



	if (!skb_ip_make_writable(pskb, (*pskb)->nh.iph->ihl*4+sizeof(*tcph)))