diff options
Diffstat (limited to 'net/ipv4/netfilter/ip_conntrack_proto_tcp.c')
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_proto_tcp.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c index e0dc370635459..062b252b58ad2 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c @@ -870,11 +870,8 @@ static int tcp_error(struct sk_buff *skb, * and moreover root might send raw packets. */ /* FIXME: Source route IP option packets --RR */ - if (hooknum == NF_IP_PRE_ROUTING - && skb->ip_summed != CHECKSUM_UNNECESSARY - && csum_tcpudp_magic(iph->saddr, iph->daddr, tcplen, IPPROTO_TCP, - skb->ip_summed == CHECKSUM_HW ? skb->csum - : skb_checksum(skb, iph->ihl*4, tcplen, 0))) { + if (hooknum == NF_IP_PRE_ROUTING && + nf_ip_checksum(skb, hooknum, iph->ihl * 4, IPPROTO_TCP)) { if (LOG_INVALID(IPPROTO_TCP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, "ip_ct_tcp: bad TCP checksum "); |