tree a7724eb37fff88f707ebd3e59cc86b8e2b582f4e
parent f93592ff4fa4a55aa7640d435fa93338e190294d
author Patrick McHardy <[EMAIL PROTECTED]> Sun, 21 Aug 2005 07:40:41 -0700
committer David S. Miller <[EMAIL PROTECTED]> Sun, 21 Aug 2005 07:40:41 -0700
[NETFILTER]: Fix HW checksum handling in TCPMSS target
Most importantly, remove bogus BUG() in receive path.
Signed-off-by: Patrick McHardy <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
net/ipv4/netfilter/ipt_TCPMSS.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/net/ipv4/netfilter/ipt_TCPMSS.c b/net/ipv4/netfilter/ipt_TCPMSS.c
--- a/net/ipv4/netfilter/ipt_TCPMSS.c
+++ b/net/ipv4/netfilter/ipt_TCPMSS.c
@@ -61,6 +61,10 @@ ipt_tcpmss_target(struct sk_buff **pskb,
if (!skb_ip_make_writable(pskb, (*pskb)->len))
return NF_DROP;
+ if ((*pskb)->ip_summed == CHECKSUM_HW &&
+ skb_checksum_help(*pskb, out == NULL))
+ return NF_DROP;
+
iph = (*pskb)->nh.iph;
tcplen = (*pskb)->len - iph->ihl*4;
@@ -186,9 +190,6 @@ ipt_tcpmss_target(struct sk_buff **pskb,
newmss);
retmodified:
- /* We never hw checksum SYN packets. */
- BUG_ON((*pskb)->ip_summed == CHECKSUM_HW);
-
(*pskb)->nfcache |= NFC_UNKNOWN | NFC_ALTERED;
return IPT_CONTINUE;
}
-
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