}
/* See ip_conntrack_proto_tcp.c */
- if (hooknum != NF_IP_PRE_ROUTING)
- goto checksum_skipped;
-
- switch (skb->ip_summed) {
- case CHECKSUM_HW:
- if (!(u16)csum_fold(skb->csum))
- break;
+ if (nf_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING &&
+ nf_ip_checksum(skb, hooknum, dataoff, 0)) {
if (LOG_INVALID(IPPROTO_ICMP))
nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL,
"nf_ct_icmp: bad HW ICMP checksum ");
return -NF_ACCEPT;
- case CHECKSUM_NONE:
- if ((u16)csum_fold(skb_checksum(skb, 0, skb->len, 0))) {
- if (LOG_INVALID(IPPROTO_ICMP))
- nf_log_packet(PF_INET, 0, skb, NULL, NULL,
- NULL,
- "nf_ct_icmp: bad ICMP checksum ");
- return -NF_ACCEPT;
- }
- default:
- break;
}
-checksum_skipped:
/*
* 18 is the highest 'known' ICMP type. Anything else is a mystery
*