diff options
Diffstat (limited to 'net/ipv4/netfilter/ipt_TCPMSS.c')
| -rw-r--r-- | 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 index 1049050b2bfb..7b84a254440e 100644 --- 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; } |