diff options
Diffstat (limited to 'net/ipv4/netfilter/nf_nat_helper.c')
| -rw-r--r-- | net/ipv4/netfilter/nf_nat_helper.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/ipv4/netfilter/nf_nat_helper.c b/net/ipv4/netfilter/nf_nat_helper.c index 2e59ad0..2fefec5 100644 --- a/net/ipv4/netfilter/nf_nat_helper.c +++ b/net/ipv4/netfilter/nf_nat_helper.c @@ -206,6 +206,7 @@ static void nf_nat_csum(struct sk_buff *skb, const struct iphdr *iph, void *data int __nf_nat_mangle_tcp_packet(struct sk_buff *skb, struct nf_conn *ct, enum ip_conntrack_info ctinfo, + unsigned int protoff, unsigned int match_offset, unsigned int match_len, const char *rep_buffer, @@ -257,6 +258,7 @@ int nf_nat_mangle_udp_packet(struct sk_buff *skb, struct nf_conn *ct, enum ip_conntrack_info ctinfo, + unsigned int protoff, unsigned int match_offset, unsigned int match_len, const char *rep_buffer, @@ -387,7 +389,8 @@ nf_nat_sack_adjust(struct sk_buff *skb, int nf_nat_seq_adjust(struct sk_buff *skb, struct nf_conn *ct, - enum ip_conntrack_info ctinfo) + enum ip_conntrack_info ctinfo, + unsigned int protoff) { struct tcphdr *tcph; int dir; @@ -401,10 +404,10 @@ nf_nat_seq_adjust(struct sk_buff *skb, this_way = &nat->seq[dir]; other_way = &nat->seq[!dir]; - if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph))) + if (!skb_make_writable(skb, protoff + sizeof(*tcph))) return 0; - tcph = (void *)skb->data + ip_hdrlen(skb); + tcph = (void *)skb->data + protoff; if (after(ntohl(tcph->seq), this_way->correction_pos)) seqoff = this_way->offset_after; else |