diff options
| author |   Patrick McHardy <kaber@trash.net> | 2012-08-26 19:14:04 +0200 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2012-08-30 03:00:13 +0200 |
| commit | 051966c0c644a1c96092d4206e00704ade813c9a (patch) | |
| tree | 9ca8005f3e2a91cbd710b1f2eb52f49bf5f19f84 /net/ipv4/netfilter/nf_nat_pptp.c | |
| parent | netfilter: nf_conntrack: restrict NAT helper invocation to IPv4 (diff) | |
| download | linux-dev-051966c0c644a1c96092d4206e00704ade813c9a.tar.xz linux-dev-051966c0c644a1c96092d4206e00704ade813c9a.zip | |
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 'net/ipv4/netfilter/nf_nat_pptp.c')
| -rw-r--r-- | net/ipv4/netfilter/nf_nat_pptp.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/netfilter/nf_nat_pptp.c b/net/ipv4/netfilter/nf_nat_pptp.c index 388140881ebe..31ef890d894b 100644 --- a/net/ipv4/netfilter/nf_nat_pptp.c +++ b/net/ipv4/netfilter/nf_nat_pptp.c @@ -113,6 +113,7 @@ static int pptp_outbound_pkt(struct sk_buff *skb, struct nf_conn *ct, enum ip_conntrack_info ctinfo, + unsigned int protoff, struct PptpControlHeader *ctlh, union pptp_ctrl_union *pptpReq) @@ -175,7 +176,7 @@ pptp_outbound_pkt(struct sk_buff *skb, ntohs(REQ_CID(pptpReq, cid_off)), ntohs(new_callid)); /* mangle packet */ - if (nf_nat_mangle_tcp_packet(skb, ct, ctinfo, + if (nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff, cid_off + sizeof(struct pptp_pkt_hdr) + sizeof(struct PptpControlHeader), sizeof(new_callid), (char *)&new_callid, @@ -216,6 +217,7 @@ static int pptp_inbound_pkt(struct sk_buff *skb, struct nf_conn *ct, enum ip_conntrack_info ctinfo, + unsigned int protoff, struct PptpControlHeader *ctlh, union pptp_ctrl_union *pptpReq) { @@ -268,7 +270,7 @@ pptp_inbound_pkt(struct sk_buff *skb, pr_debug("altering peer call id from 0x%04x to 0x%04x\n", ntohs(REQ_CID(pptpReq, pcid_off)), ntohs(new_pcid)); - if (nf_nat_mangle_tcp_packet(skb, ct, ctinfo, + if (nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff, pcid_off + sizeof(struct pptp_pkt_hdr) + sizeof(struct PptpControlHeader), sizeof(new_pcid), (char *)&new_pcid, |