Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 7e71af49 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

[NETFILTER]: Fix HW checksum handling in TCPMSS target 



Most importantly, remove bogus BUG() in receive path.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f93592ff

net/ipv4/netfilter/ipt_TCPMSS.c

+4 −3
Original line number Original line Diff line number Diff line
@@ -61,6 +61,10 @@ ipt_tcpmss_target(struct sk_buff **pskb, 
	if (!skb_ip_make_writable(pskb, (*pskb)->len))

	if (!skb_ip_make_writable(pskb, (*pskb)->len))

		return NF_DROP;

		return NF_DROP;





	if ((*pskb)->ip_summed == CHECKSUM_HW &&

	    skb_checksum_help(*pskb, out == NULL))

		return NF_DROP;



	iph = (*pskb)->nh.iph;

	iph = (*pskb)->nh.iph;

	tcplen = (*pskb)->len - iph->ihl*4;

	tcplen = (*pskb)->len - iph->ihl*4;
@@ -186,9 +190,6 @@ ipt_tcpmss_target(struct sk_buff **pskb, 
	       newmss);

	       newmss);





 retmodified:

 retmodified:

	/* We never hw checksum SYN packets.  */

	BUG_ON((*pskb)->ip_summed == CHECKSUM_HW);



	(*pskb)->nfcache |= NFC_UNKNOWN | NFC_ALTERED;

	(*pskb)->nfcache |= NFC_UNKNOWN | NFC_ALTERED;

	return IPT_CONTINUE;

	return IPT_CONTINUE;

}

}