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authorPatrick McHardy <kaber@trash.net>2012-08-26 19:14:04 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2012-08-30 03:00:13 +0200
commit051966c0c644a1c96092d4206e00704ade813c9a (patch)
tree9ca8005f3e2a91cbd710b1f2eb52f49bf5f19f84 /include/net
parent811927ccfe90fbfcfff5253ba7f95057f6cae692 (diff)
netfilter: nf_nat: add protoff argument to packet mangling functions
For mangling IPv6 packets the protocol header offset needs to be known by the NAT packet mangling functions. Add a so far unused protoff argument and convert the conntrack and NAT helpers to use it in preparation of IPv6 NAT. Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/netfilter/nf_nat_helper.h11
1 files changed, 8 insertions, 3 deletions
diff --git a/include/net/netfilter/nf_nat_helper.h b/include/net/netfilter/nf_nat_helper.h
index 7d8fb7b46c44..b4d6bfc2af03 100644
--- a/include/net/netfilter/nf_nat_helper.h
+++ b/include/net/netfilter/nf_nat_helper.h
@@ -10,6 +10,7 @@ struct sk_buff;
extern 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,
@@ -18,12 +19,13 @@ extern int __nf_nat_mangle_tcp_packet(struct sk_buff *skb,
static inline 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,
unsigned int rep_len)
{
- return __nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
+ return __nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff,
match_offset, match_len,
rep_buffer, rep_len, true);
}
@@ -31,6 +33,7 @@ static inline int nf_nat_mangle_tcp_packet(struct sk_buff *skb,
extern 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,
@@ -41,10 +44,12 @@ extern void nf_nat_set_seq_adjust(struct nf_conn *ct,
__be32 seq, s16 off);
extern 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);
extern int (*nf_nat_seq_adjust_hook)(struct sk_buff *skb,
struct nf_conn *ct,
- enum ip_conntrack_info ctinfo);
+ enum ip_conntrack_info ctinfo,
+ unsigned int protoff);
/* Setup NAT on this expected conntrack so it follows master, but goes
* to port ct->master->saved_proto. */