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netfilter: nf_nat: add protoff argument to packet mangling functions

Browse source 
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>
This commit is contained in:
Patrick McHardy 2012-08-26 19:14:04 +02:00 committed by Pablo Neira Ayuso
parent 811927ccfe
commit 051966c0c6
22 changed files with 328 additions and 205 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
include/linux/netfilter/nf_conntrack_amanda.h
View file

@ -4,6 +4,7 @@
extern unsigned int (*nf_nat_amanda_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp);

1
include/linux/netfilter/nf_conntrack_ftp.h
View file

@ -34,6 +34,7 @@ struct nf_conntrack_expect;
extern unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
enum nf_ct_ftp_type type,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp);

15
include/linux/netfilter/nf_conntrack_h323.h
View file

@ -36,12 +36,12 @@ extern void nf_conntrack_h245_expect(struct nf_conn *new,
struct nf_conntrack_expect *this);
extern void nf_conntrack_q931_expect(struct nf_conn *new,
struct nf_conntrack_expect *this);
extern int (*set_h245_addr_hook) (struct sk_buff *skb,
extern int (*set_h245_addr_hook) (struct sk_buff *skb, unsigned int protoff,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
union nf_inet_addr *addr,
__be16 port);
extern int (*set_h225_addr_hook) (struct sk_buff *skb,
extern int (*set_h225_addr_hook) (struct sk_buff *skb, unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr,
union nf_inet_addr *addr,
@ -49,40 +49,45 @@ extern int (*set_h225_addr_hook) (struct sk_buff *skb,
extern int (*set_sig_addr_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
unsigned int protoff, unsigned char **data,
TransportAddress *taddr, int count);
extern int (*set_ras_addr_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
unsigned int protoff, unsigned char **data,
TransportAddress *taddr, int count);
extern int (*nat_rtp_rtcp_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
unsigned int protoff, unsigned char **data,
int dataoff,
H245_TransportAddress *taddr,
__be16 port, __be16 rtp_port,
struct nf_conntrack_expect *rtp_exp,
struct nf_conntrack_expect *rtcp_exp);
extern int (*nat_t120_hook) (struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_h245_hook) (struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_callforwarding_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr,
__be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_q931_hook) (struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, TransportAddress *taddr,
int idx, __be16 port,
struct nf_conntrack_expect *exp);

1
include/linux/netfilter/nf_conntrack_irc.h
View file

@ -7,6 +7,7 @@
extern unsigned int (*nf_nat_irc_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp);

2
include/linux/netfilter/nf_conntrack_pptp.h
View file

@ -303,12 +303,14 @@ struct nf_conntrack_expect;
extern int
(*nf_nat_pptp_hook_outbound)(struct sk_buff *skb,
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
unsigned int protoff,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq);
extern int
(*nf_nat_pptp_hook_inbound)(struct sk_buff *skb,
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
unsigned int protoff,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq);

12
include/linux/netfilter/nf_conntrack_sip.h
View file

@ -37,10 +37,12 @@ struct sdp_media_type {
struct sip_handler {
const char *method;
unsigned int len;
int (*request)(struct sk_buff *skb, unsigned int dataoff,
int (*request)(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq);
int (*response)(struct sk_buff *skb, unsigned int dataoff,
int (*response)(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq, unsigned int code);
};
@ -105,11 +107,13 @@ enum sdp_header_types {
};
extern unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen);
extern void (*nf_nat_sip_seq_adjust_hook)(struct sk_buff *skb, s16 off);
extern unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
@ -117,6 +121,7 @@ extern unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
unsigned int matchoff,
unsigned int matchlen);
extern unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb,
unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
@ -125,6 +130,7 @@ extern unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb,
enum sdp_header_types term,
const union nf_inet_addr *addr);
extern unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb,
unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
@ -132,12 +138,14 @@ extern unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb,
unsigned int matchlen,
u_int16_t port);
extern unsigned int (*nf_nat_sdp_session_hook)(struct sk_buff *skb,
unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
unsigned int sdpoff,
const union nf_inet_addr *addr);
extern unsigned int (*nf_nat_sdp_media_hook)(struct sk_buff *skb,
unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,

11
include/net/netfilter/nf_nat_helper.h
View file

@ -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. */

6
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
View file

@ -31,7 +31,8 @@
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);
EXPORT_SYMBOL_GPL(nf_nat_seq_adjust_hook);
static bool ipv4_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
@ -149,7 +150,8 @@ static unsigned int ipv4_confirm(unsigned int hooknum,
typeof(nf_nat_seq_adjust_hook) seq_adjust;
seq_adjust = rcu_dereference(nf_nat_seq_adjust_hook);
if (!seq_adjust || !seq_adjust(skb, ct, ctinfo)) {
if (!seq_adjust ||
!seq_adjust(skb, ct, ctinfo, ip_hdrlen(skb))) {
NF_CT_STAT_INC_ATOMIC(nf_ct_net(ct), drop);
return NF_DROP;
}

3
net/ipv4/netfilter/nf_nat_amanda.c
View file

@ -26,6 +26,7 @@ MODULE_ALIAS("ip_nat_amanda");
static unsigned int help(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp)
@ -61,7 +62,7 @@ static unsigned int help(struct sk_buff *skb,
sprintf(buffer, "%u", port);
ret = nf_nat_mangle_udp_packet(skb, exp->master, ctinfo,
matchoff, matchlen,
protoff, matchoff, matchlen,
buffer, strlen(buffer));
if (ret != NF_ACCEPT)
nf_ct_unexpect_related(exp);

3
net/ipv4/netfilter/nf_nat_ftp.c
View file

@ -55,6 +55,7 @@ static int nf_nat_ftp_fmt_cmd(enum nf_ct_ftp_type type,
static unsigned int nf_nat_ftp(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
enum nf_ct_ftp_type type,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp)
@ -100,7 +101,7 @@ static unsigned int nf_nat_ftp(struct sk_buff *skb,
pr_debug("calling nf_nat_mangle_tcp_packet\n");
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo, matchoff,
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff, matchoff,
matchlen, buffer, buflen))
goto out;

48
net/ipv4/netfilter/nf_nat_h323.c
View file

@ -21,7 +21,7 @@
#include <linux/netfilter/nf_conntrack_h323.h>
/****************************************************************************/
static int set_addr(struct sk_buff *skb,
static int set_addr(struct sk_buff *skb, unsigned int protoff,
unsigned char **data, int dataoff,
unsigned int addroff, __be32 ip, __be16 port)
{
@ -40,7 +40,7 @@ static int set_addr(struct sk_buff *skb,
if (ip_hdr(skb)->protocol == IPPROTO_TCP) {
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
addroff, sizeof(buf),
protoff, addroff, sizeof(buf),
(char *) &buf, sizeof(buf))) {
net_notice_ratelimited("nf_nat_h323: nf_nat_mangle_tcp_packet error\n");
return -1;
@ -54,7 +54,7 @@ static int set_addr(struct sk_buff *skb,
*data = skb->data + ip_hdrlen(skb) + th->doff * 4 + dataoff;
} else {
if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo,
addroff, sizeof(buf),
protoff, addroff, sizeof(buf),
(char *) &buf, sizeof(buf))) {
net_notice_ratelimited("nf_nat_h323: nf_nat_mangle_udp_packet error\n");
return -1;
@ -69,22 +69,22 @@ static int set_addr(struct sk_buff *skb,
}
/****************************************************************************/
static int set_h225_addr(struct sk_buff *skb,
static int set_h225_addr(struct sk_buff *skb, unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr,
union nf_inet_addr *addr, __be16 port)
{
return set_addr(skb, data, dataoff, taddr->ipAddress.ip,
return set_addr(skb, protoff, data, dataoff, taddr->ipAddress.ip,
addr->ip, port);
}
/****************************************************************************/
static int set_h245_addr(struct sk_buff *skb,
static int set_h245_addr(struct sk_buff *skb, unsigned protoff,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
union nf_inet_addr *addr, __be16 port)
{
return set_addr(skb, data, dataoff,
return set_addr(skb, protoff, data, dataoff,
taddr->unicastAddress.iPAddress.network,
addr->ip, port);
}
@ -92,7 +92,7 @@ static int set_h245_addr(struct sk_buff *skb,
/****************************************************************************/
static int set_sig_addr(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
unsigned int protoff, unsigned char **data,
TransportAddress *taddr, int count)
{
const struct nf_ct_h323_master *info = nfct_help_data(ct);
@ -118,7 +118,8 @@ static int set_sig_addr(struct sk_buff *skb, struct nf_conn *ct,
&addr.ip, port,
&ct->tuplehash[!dir].tuple.dst.u3.ip,
info->sig_port[!dir]);
return set_h225_addr(skb, data, 0, &taddr[i],
return set_h225_addr(skb, protoff, data, 0,
&taddr[i],
&ct->tuplehash[!dir].
tuple.dst.u3,
info->sig_port[!dir]);
@ -129,7 +130,8 @@ static int set_sig_addr(struct sk_buff *skb, struct nf_conn *ct,
&addr.ip, port,
&ct->tuplehash[!dir].tuple.src.u3.ip,
info->sig_port[!dir]);
return set_h225_addr(skb, data, 0, &taddr[i],
return set_h225_addr(skb, protoff, data, 0,
&taddr[i],
&ct->tuplehash[!dir].
tuple.src.u3,
info->sig_port[!dir]);
@ -143,7 +145,7 @@ static int set_sig_addr(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int set_ras_addr(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
unsigned int protoff, unsigned char **data,
TransportAddress *taddr, int count)
{
int dir = CTINFO2DIR(ctinfo);
@ -159,7 +161,7 @@ static int set_ras_addr(struct sk_buff *skb, struct nf_conn *ct,
&addr.ip, ntohs(port),
&ct->tuplehash[!dir].tuple.dst.u3.ip,
ntohs(ct->tuplehash[!dir].tuple.dst.u.udp.port));
return set_h225_addr(skb, data, 0, &taddr[i],
return set_h225_addr(skb, protoff, data, 0, &taddr[i],
&ct->tuplehash[!dir].tuple.dst.u3,
ct->tuplehash[!dir].tuple.
dst.u.udp.port);
@ -172,7 +174,7 @@ static int set_ras_addr(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
unsigned int protoff, unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
__be16 port, __be16 rtp_port,
struct nf_conntrack_expect *rtp_exp,
@ -244,7 +246,7 @@ static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
}
/* Modify signal */
if (set_h245_addr(skb, data, dataoff, taddr,
if (set_h245_addr(skb, protoff, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons((port & htons(1)) ? nated_port + 1 :
nated_port)) == 0) {
@ -275,7 +277,7 @@ static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int nat_t120(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
unsigned int protoff, unsigned char **data, int dataoff,
H245_TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp)
{
@ -307,7 +309,7 @@ static int nat_t120(struct sk_buff *skb, struct nf_conn *ct,
}
/* Modify signal */
if (set_h245_addr(skb, data, dataoff, taddr,
if (set_h245_addr(skb, protoff, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons(nated_port)) < 0) {
nf_ct_unexpect_related(exp);
@ -326,7 +328,7 @@ static int nat_t120(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
unsigned int protoff, unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp)
{
@ -363,7 +365,7 @@ static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
}
/* Modify signal */
if (set_h225_addr(skb, data, dataoff, taddr,
if (set_h225_addr(skb, protoff, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons(nated_port)) == 0) {
/* Save ports */
@ -416,7 +418,8 @@ static void ip_nat_q931_expect(struct nf_conn *new,
/****************************************************************************/
static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, TransportAddress *taddr, int idx,
unsigned int protoff, unsigned char **data,
TransportAddress *taddr, int idx,
__be16 port, struct nf_conntrack_expect *exp)
{
struct nf_ct_h323_master *info = nfct_help_data(ct);
@ -453,7 +456,7 @@ static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
}
/* Modify signal */
if (set_h225_addr(skb, data, 0, &taddr[idx],
if (set_h225_addr(skb, protoff, data, 0, &taddr[idx],
&ct->tuplehash[!dir].tuple.dst.u3,
htons(nated_port)) == 0) {
/* Save ports */
@ -464,7 +467,7 @@ static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
if (idx > 0 &&
get_h225_addr(ct, *data, &taddr[0], &addr, &port) &&
(ntohl(addr.ip) & 0xff000000) == 0x7f000000) {
set_h225_addr(skb, data, 0, &taddr[0],
set_h225_addr(skb, protoff, data, 0, &taddr[0],
&ct->tuplehash[!dir].tuple.dst.u3,
info->sig_port[!dir]);
}
@ -507,6 +510,7 @@ static void ip_nat_callforwarding_expect(struct nf_conn *new,
/****************************************************************************/
static int nat_callforwarding(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp)
@ -541,7 +545,7 @@ static int nat_callforwarding(struct sk_buff *skb, struct nf_conn *ct,
}
/* Modify signal */
if (!set_h225_addr(skb, data, dataoff, taddr,
if (!set_h225_addr(skb, protoff, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons(nated_port)) == 0) {
nf_ct_unexpect_related(exp);

9
net/ipv4/netfilter/nf_nat_helper.c
View file

@ -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

3
net/ipv4/netfilter/nf_nat_irc.c
View file

@ -29,6 +29,7 @@ MODULE_ALIAS("ip_nat_irc");
static unsigned int help(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp)
@ -66,7 +67,7 @@ static unsigned int help(struct sk_buff *skb,
buffer, &ip, port);
ret = nf_nat_mangle_tcp_packet(skb, exp->master, ctinfo,
matchoff, matchlen, buffer,
protoff, matchoff, matchlen, buffer,
strlen(buffer));
if (ret != NF_ACCEPT)
nf_ct_unexpect_related(exp);

6
net/ipv4/netfilter/nf_nat_pptp.c
View file

@ -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,

96
net/ipv4/netfilter/nf_nat_sip.c
View file

@ -30,7 +30,8 @@ MODULE_DESCRIPTION("SIP NAT helper");
MODULE_ALIAS("ip_nat_sip");
static unsigned int mangle_packet(struct sk_buff *skb, unsigned int dataoff,
static unsigned int mangle_packet(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int matchoff, unsigned int matchlen,
const char *buffer, unsigned int buflen)
@ -46,7 +47,7 @@ static unsigned int mangle_packet(struct sk_buff *skb, unsigned int dataoff,
matchoff += dataoff - baseoff;
if (!__nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
matchoff, matchlen,
protoff, matchoff, matchlen,
buffer, buflen, false))
return 0;
} else {
@ -54,7 +55,7 @@ static unsigned int mangle_packet(struct sk_buff *skb, unsigned int dataoff,
matchoff += dataoff - baseoff;
if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo,
matchoff, matchlen,
protoff, matchoff, matchlen,
buffer, buflen))
return 0;
}
@ -65,7 +66,8 @@ static unsigned int mangle_packet(struct sk_buff *skb, unsigned int dataoff,
return 1;
}
static int map_addr(struct sk_buff *skb, unsigned int dataoff,
static int map_addr(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int matchoff, unsigned int matchlen,
union nf_inet_addr *addr, __be16 port)
@ -94,11 +96,12 @@ static int map_addr(struct sk_buff *skb, unsigned int dataoff,
buflen = sprintf(buffer, "%pI4:%u", &newaddr, ntohs(newport));
return mangle_packet(skb, dataoff, dptr, datalen, matchoff, matchlen,
buffer, buflen);
return mangle_packet(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen, buffer, buflen);
}
static int map_sip_addr(struct sk_buff *skb, unsigned int dataoff,
static int map_sip_addr(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
enum sip_header_types type)
{
@ -111,11 +114,12 @@ static int map_sip_addr(struct sk_buff *skb, unsigned int dataoff,
if (ct_sip_parse_header_uri(ct, *dptr, NULL, *datalen, type, NULL,
&matchoff, &matchlen, &addr, &port) <= 0)
return 1;
return map_addr(skb, dataoff, dptr, datalen, matchoff, matchlen,
&addr, port);
return map_addr(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen, &addr, port);
}
static unsigned int ip_nat_sip(struct sk_buff *skb, unsigned int dataoff,
static unsigned int ip_nat_sip(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen)
{
enum ip_conntrack_info ctinfo;
@ -132,8 +136,8 @@ static unsigned int ip_nat_sip(struct sk_buff *skb, unsigned int dataoff,
if (ct_sip_parse_request(ct, *dptr, *datalen,
&matchoff, &matchlen,
&addr, &port) > 0 &&
!map_addr(skb, dataoff, dptr, datalen, matchoff, matchlen,
&addr, port))
!map_addr(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen, &addr, port))
return NF_DROP;
request = 1;
} else
@ -164,8 +168,8 @@ static unsigned int ip_nat_sip(struct sk_buff *skb, unsigned int dataoff,
}
olen = *datalen;
if (!map_addr(skb, dataoff, dptr, datalen, matchoff, matchlen,
&addr, port))
if (!map_addr(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen, &addr, port))
return NF_DROP;
matchend = matchoff + matchlen + *datalen - olen;
@ -179,7 +183,7 @@ static unsigned int ip_nat_sip(struct sk_buff *skb, unsigned int dataoff,
addr.ip != ct->tuplehash[!dir].tuple.dst.u3.ip) {
buflen = sprintf(buffer, "%pI4",
&ct->tuplehash[!dir].tuple.dst.u3.ip);
if (!mangle_packet(skb, dataoff, dptr, datalen,
if (!mangle_packet(skb, protoff, dataoff, dptr, datalen,
poff, plen, buffer, buflen))
return NF_DROP;
}
@ -193,7 +197,7 @@ static unsigned int ip_nat_sip(struct sk_buff *skb, unsigned int dataoff,
addr.ip != ct->tuplehash[!dir].tuple.src.u3.ip) {
buflen = sprintf(buffer, "%pI4",
&ct->tuplehash[!dir].tuple.src.u3.ip);
if (!mangle_packet(skb, dataoff, dptr, datalen,
if (!mangle_packet(skb, protoff, dataoff, dptr, datalen,
poff, plen, buffer, buflen))
return NF_DROP;
}
@ -207,7 +211,7 @@ static unsigned int ip_nat_sip(struct sk_buff *skb, unsigned int dataoff,
htons(n) != ct->tuplehash[!dir].tuple.src.u.udp.port) {
__be16 p = ct->tuplehash[!dir].tuple.src.u.udp.port;
buflen = sprintf(buffer, "%u", ntohs(p));
if (!mangle_packet(skb, dataoff, dptr, datalen,
if (!mangle_packet(skb, protoff, dataoff, dptr, datalen,
poff, plen, buffer, buflen))
return NF_DROP;
}
@ -221,13 +225,14 @@ next:
SIP_HDR_CONTACT, &in_header,
&matchoff, &matchlen,
&addr, &port) > 0) {
if (!map_addr(skb, dataoff, dptr, datalen, matchoff, matchlen,
if (!map_addr(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen,
&addr, port))
return NF_DROP;
}
if (!map_sip_addr(skb, dataoff, dptr, datalen, SIP_HDR_FROM) ||
!map_sip_addr(skb, dataoff, dptr, datalen, SIP_HDR_TO))
if (!map_sip_addr(skb, protoff, dataoff, dptr, datalen, SIP_HDR_FROM) ||
!map_sip_addr(skb, protoff, dataoff, dptr, datalen, SIP_HDR_TO))
return NF_DROP;
return NF_ACCEPT;
@ -272,7 +277,8 @@ static void ip_nat_sip_expected(struct nf_conn *ct,
}
}
static unsigned int ip_nat_sip_expect(struct sk_buff *skb, unsigned int dataoff,
static unsigned int ip_nat_sip_expect(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
struct nf_conntrack_expect *exp,
unsigned int matchoff,
@ -326,7 +332,7 @@ static unsigned int ip_nat_sip_expect(struct sk_buff *skb, unsigned int dataoff,
if (exp->tuple.dst.u3.ip != exp->saved_ip ||
exp->tuple.dst.u.udp.port != exp->saved_proto.udp.port) {
buflen = sprintf(buffer, "%pI4:%u", &newip, port);
if (!mangle_packet(skb, dataoff, dptr, datalen,
if (!mangle_packet(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen, buffer, buflen))
goto err;
}
@ -337,7 +343,8 @@ err:
return NF_DROP;
}
static int mangle_content_len(struct sk_buff *skb, unsigned int dataoff,
static int mangle_content_len(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen)
{
enum ip_conntrack_info ctinfo;
@ -359,11 +366,12 @@ static int mangle_content_len(struct sk_buff *skb, unsigned int dataoff,
return 0;
buflen = sprintf(buffer, "%u", c_len);
return mangle_packet(skb, dataoff, dptr, datalen, matchoff, matchlen,
buffer, buflen);
return mangle_packet(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen, buffer, buflen);
}
static int mangle_sdp_packet(struct sk_buff *skb, unsigned int dataoff,
static int mangle_sdp_packet(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int sdpoff,
enum sdp_header_types type,
@ -377,11 +385,12 @@ static int mangle_sdp_packet(struct sk_buff *skb, unsigned int dataoff,
if (ct_sip_get_sdp_header(ct, *dptr, sdpoff, *datalen, type, term,
&matchoff, &matchlen) <= 0)
return -ENOENT;
return mangle_packet(skb, dataoff, dptr, datalen, matchoff, matchlen,
buffer, buflen) ? 0 : -EINVAL;
return mangle_packet(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen, buffer, buflen) ? 0 : -EINVAL;
}
static unsigned int ip_nat_sdp_addr(struct sk_buff *skb, unsigned int dataoff,
static unsigned int ip_nat_sdp_addr(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int sdpoff,
enum sdp_header_types type,
@ -392,14 +401,15 @@ static unsigned int ip_nat_sdp_addr(struct sk_buff *skb, unsigned int dataoff,
unsigned int buflen;
buflen = sprintf(buffer, "%pI4", &addr->ip);
if (mangle_sdp_packet(skb, dataoff, dptr, datalen, sdpoff, type, term,
buffer, buflen))
if (mangle_sdp_packet(skb, protoff, dataoff, dptr, datalen,
sdpoff, type, term, buffer, buflen))
return 0;
return mangle_content_len(skb, dataoff, dptr, datalen);
return mangle_content_len(skb, protoff, dataoff, dptr, datalen);
}
static unsigned int ip_nat_sdp_port(struct sk_buff *skb, unsigned int dataoff,
static unsigned int ip_nat_sdp_port(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int matchoff,
unsigned int matchlen,
@ -409,14 +419,15 @@ static unsigned int ip_nat_sdp_port(struct sk_buff *skb, unsigned int dataoff,
unsigned int buflen;
buflen = sprintf(buffer, "%u", port);
if (!mangle_packet(skb, dataoff, dptr, datalen, matchoff, matchlen,
buffer, buflen))
if (!mangle_packet(skb, protoff, dataoff, dptr, datalen,
matchoff, matchlen, buffer, buflen))
return 0;
return mangle_content_len(skb, dataoff, dptr, datalen);
return mangle_content_len(skb, protoff, dataoff, dptr, datalen);
}
static unsigned int ip_nat_sdp_session(struct sk_buff *skb, unsigned int dataoff,
static unsigned int ip_nat_sdp_session(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int sdpoff,
const union nf_inet_addr *addr)
@ -426,12 +437,12 @@ static unsigned int ip_nat_sdp_session(struct sk_buff *skb, unsigned int dataoff
/* Mangle session description owner and contact addresses */
buflen = sprintf(buffer, "%pI4", &addr->ip);
if (mangle_sdp_packet(skb, dataoff, dptr, datalen, sdpoff,
if (mangle_sdp_packet(skb, protoff, dataoff, dptr, datalen, sdpoff,
SDP_HDR_OWNER_IP4, SDP_HDR_MEDIA,
buffer, buflen))
return 0;
switch (mangle_sdp_packet(skb, dataoff, dptr, datalen, sdpoff,
switch (mangle_sdp_packet(skb, protoff, dataoff, dptr, datalen, sdpoff,
SDP_HDR_CONNECTION_IP4, SDP_HDR_MEDIA,
buffer, buflen)) {
case 0:
@ -448,12 +459,13 @@ static unsigned int ip_nat_sdp_session(struct sk_buff *skb, unsigned int dataoff
return 0;
}
return mangle_content_len(skb, dataoff, dptr, datalen);
return mangle_content_len(skb, protoff, dataoff, dptr, datalen);
}
/* So, this packet has hit the connection tracking matching code.
Mangle it, and change the expectation to match the new version. */
static unsigned int ip_nat_sdp_media(struct sk_buff *skb, unsigned int dataoff,
static unsigned int ip_nat_sdp_media(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
struct nf_conntrack_expect *rtp_exp,
struct nf_conntrack_expect *rtcp_exp,
@ -514,7 +526,7 @@ static unsigned int ip_nat_sdp_media(struct sk_buff *skb, unsigned int dataoff,
/* Update media port. */
if (rtp_exp->tuple.dst.u.udp.port != rtp_exp->saved_proto.udp.port &&
!ip_nat_sdp_port(skb, dataoff, dptr, datalen,
!ip_nat_sdp_port(skb, protoff, dataoff, dptr, datalen,
mediaoff, medialen, port))
goto err2;

1
net/netfilter/ipvs/ip_vs_ftp.c
View file

@ -268,6 +268,7 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
* packet.
*/
ret = nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
iph->ihl * 4,
start-data, end-start,
buf, buf_len);
if (ret) {

5
net/netfilter/nf_conntrack_amanda.c
View file

@ -40,6 +40,7 @@ MODULE_PARM_DESC(ts_algo, "textsearch algorithm to use (default kmp)");
unsigned int (*nf_nat_amanda_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp)
@ -156,8 +157,8 @@ static int amanda_help(struct sk_buff *skb,
nf_nat_amanda = rcu_dereference(nf_nat_amanda_hook);
if (nf_nat_amanda && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK)
ret = nf_nat_amanda(skb, ctinfo, off - dataoff,
len, exp);
ret = nf_nat_amanda(skb, ctinfo, protoff,
off - dataoff, len, exp);
else if (nf_ct_expect_related(exp) != 0)
ret = NF_DROP;
nf_ct_expect_put(exp);

3
net/netfilter/nf_conntrack_ftp.c
View file

@ -48,6 +48,7 @@ module_param(loose, bool, 0600);
unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
enum nf_ct_ftp_type type,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp);
@ -490,7 +491,7 @@ static int help(struct sk_buff *skb,
if (nf_nat_ftp && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK)
ret = nf_nat_ftp(skb, ctinfo, search[dir][i].ftptype,
matchoff, matchlen, exp);
protoff, matchoff, matchlen, exp);
else {
/* Can't expect this? Best to drop packet now. */
if (nf_ct_expect_related(exp) != 0)

191
net/netfilter/nf_conntrack_h323_main.c
View file

@ -49,12 +49,12 @@ MODULE_PARM_DESC(callforward_filter, "only create call forwarding expectations "
"(determined by routing information)");
/* Hooks for NAT */
int (*set_h245_addr_hook) (struct sk_buff *skb,
int (*set_h245_addr_hook) (struct sk_buff *skb, unsigned int protoff,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
union nf_inet_addr *addr, __be16 port)
__read_mostly;
int (*set_h225_addr_hook) (struct sk_buff *skb,
int (*set_h225_addr_hook) (struct sk_buff *skb, unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr,
union nf_inet_addr *addr, __be16 port)
@ -62,16 +62,17 @@ int (*set_h225_addr_hook) (struct sk_buff *skb,
int (*set_sig_addr_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
unsigned int protoff, unsigned char **data,
TransportAddress *taddr, int count) __read_mostly;
int (*set_ras_addr_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
unsigned int protoff, unsigned char **data,
TransportAddress *taddr, int count) __read_mostly;
int (*nat_rtp_rtcp_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
__be16 port, __be16 rtp_port,
@ -80,24 +81,28 @@ int (*nat_rtp_rtcp_hook) (struct sk_buff *skb,
int (*nat_t120_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp) __read_mostly;
int (*nat_h245_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp) __read_mostly;
int (*nat_callforwarding_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp) __read_mostly;
int (*nat_q931_hook) (struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, TransportAddress *taddr, int idx,
__be16 port, struct nf_conntrack_expect *exp)
__read_mostly;
@ -251,6 +256,7 @@ static int get_h245_addr(struct nf_conn *ct, const unsigned char *data,
/****************************************************************************/
static int expect_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr)
{
@ -298,7 +304,7 @@ static int expect_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
/* NAT needed */
ret = nat_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
ret = nat_rtp_rtcp(skb, ct, ctinfo, protoff, data, dataoff,
taddr, port, rtp_port, rtp_exp, rtcp_exp);
} else { /* Conntrack only */
if (nf_ct_expect_related(rtp_exp) == 0) {
@ -325,6 +331,7 @@ static int expect_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
static int expect_t120(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr)
{
@ -357,7 +364,7 @@ static int expect_t120(struct sk_buff *skb,
nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
/* NAT needed */
ret = nat_t120(skb, ct, ctinfo, data, dataoff, taddr,
ret = nat_t120(skb, ct, ctinfo, protoff, data, dataoff, taddr,
port, exp);
} else { /* Conntrack only */
if (nf_ct_expect_related(exp) == 0) {
@ -376,6 +383,7 @@ static int expect_t120(struct sk_buff *skb,
static int process_h245_channel(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
H2250LogicalChannelParameters *channel)
{
@ -383,7 +391,7 @@ static int process_h245_channel(struct sk_buff *skb,
if (channel->options & eH2250LogicalChannelParameters_mediaChannel) {
/* RTP */
ret = expect_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
ret = expect_rtp_rtcp(skb, ct, ctinfo, protoff, data, dataoff,
&channel->mediaChannel);
if (ret < 0)
return -1;
@ -392,7 +400,7 @@ static int process_h245_channel(struct sk_buff *skb,
if (channel->
options & eH2250LogicalChannelParameters_mediaControlChannel) {
/* RTCP */
ret = expect_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
ret = expect_rtp_rtcp(skb, ct, ctinfo, protoff, data, dataoff,
&channel->mediaControlChannel);
if (ret < 0)
return -1;
@ -404,6 +412,7 @@ static int process_h245_channel(struct sk_buff *skb,
/****************************************************************************/
static int process_olc(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
OpenLogicalChannel *olc)
{
@ -414,7 +423,8 @@ static int process_olc(struct sk_buff *skb, struct nf_conn *ct,
if (olc->forwardLogicalChannelParameters.multiplexParameters.choice ==
eOpenLogicalChannel_forwardLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters)
{
ret = process_h245_channel(skb, ct, ctinfo, data, dataoff,
ret = process_h245_channel(skb, ct, ctinfo,
protoff, data, dataoff,
&olc->
forwardLogicalChannelParameters.
multiplexParameters.
@ -432,7 +442,8 @@ static int process_olc(struct sk_buff *skb, struct nf_conn *ct,
eOpenLogicalChannel_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters))
{
ret =
process_h245_channel(skb, ct, ctinfo, data, dataoff,
process_h245_channel(skb, ct, ctinfo,
protoff, data, dataoff,
&olc->
reverseLogicalChannelParameters.
multiplexParameters.
@ -450,7 +461,7 @@ static int process_olc(struct sk_buff *skb, struct nf_conn *ct,
t120.choice == eDataProtocolCapability_separateLANStack &&
olc->separateStack.networkAddress.choice ==
eNetworkAccessParameters_networkAddress_localAreaAddress) {
ret = expect_t120(skb, ct, ctinfo, data, dataoff,
ret = expect_t120(skb, ct, ctinfo, protoff, data, dataoff,
&olc->separateStack.networkAddress.
localAreaAddress);
if (ret < 0)
@ -463,7 +474,7 @@ static int process_olc(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_olca(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
unsigned int protoff, unsigned char **data, int dataoff,
OpenLogicalChannelAck *olca)
{
H2250LogicalChannelAckParameters *ack;
@ -479,7 +490,8 @@ static int process_olca(struct sk_buff *skb, struct nf_conn *ct,
choice ==
eOpenLogicalChannelAck_reverseLogicalChannelParameters_multiplexParameters_h2250LogicalChannelParameters))
{
ret = process_h245_channel(skb, ct, ctinfo, data, dataoff,
ret = process_h245_channel(skb, ct, ctinfo,
protoff, data, dataoff,
&olca->
reverseLogicalChannelParameters.
multiplexParameters.
@ -498,7 +510,8 @@ static int process_olca(struct sk_buff *skb, struct nf_conn *ct,
if (ack->options &
eH2250LogicalChannelAckParameters_mediaChannel) {
/* RTP */
ret = expect_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
ret = expect_rtp_rtcp(skb, ct, ctinfo,
protoff, data, dataoff,
&ack->mediaChannel);
if (ret < 0)
return -1;
@ -507,7 +520,8 @@ static int process_olca(struct sk_buff *skb, struct nf_conn *ct,
if (ack->options &
eH2250LogicalChannelAckParameters_mediaControlChannel) {
/* RTCP */
ret = expect_rtp_rtcp(skb, ct, ctinfo, data, dataoff,
ret = expect_rtp_rtcp(skb, ct, ctinfo,
protoff, data, dataoff,
&ack->mediaControlChannel);
if (ret < 0)
return -1;
@ -517,7 +531,7 @@ static int process_olca(struct sk_buff *skb, struct nf_conn *ct,
if ((olca->options & eOpenLogicalChannelAck_separateStack) &&
olca->separateStack.networkAddress.choice ==
eNetworkAccessParameters_networkAddress_localAreaAddress) {
ret = expect_t120(skb, ct, ctinfo, data, dataoff,
ret = expect_t120(skb, ct, ctinfo, protoff, data, dataoff,
&olca->separateStack.networkAddress.
localAreaAddress);
if (ret < 0)
@ -530,14 +544,15 @@ static int process_olca(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_h245(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
unsigned int protoff, unsigned char **data, int dataoff,
MultimediaSystemControlMessage *mscm)
{
switch (mscm->choice) {
case eMultimediaSystemControlMessage_request:
if (mscm->request.choice ==
eRequestMessage_openLogicalChannel) {
return process_olc(skb, ct, ctinfo, data, dataoff,
return process_olc(skb, ct, ctinfo,
protoff, data, dataoff,
&mscm->request.openLogicalChannel);
}
pr_debug("nf_ct_h323: H.245 Request %d\n",
@ -546,7 +561,8 @@ static int process_h245(struct sk_buff *skb, struct nf_conn *ct,
case eMultimediaSystemControlMessage_response:
if (mscm->response.choice ==
eResponseMessage_openLogicalChannelAck) {
return process_olca(skb, ct, ctinfo, data, dataoff,
return process_olca(skb, ct, ctinfo,
protoff, data, dataoff,
&mscm->response.
openLogicalChannelAck);
}
@ -597,7 +613,8 @@ static int h245_help(struct sk_buff *skb, unsigned int protoff,
}
/* Process H.245 signal */
if (process_h245(skb, ct, ctinfo, &data, dataoff, &mscm) < 0)
if (process_h245(skb, ct, ctinfo, protoff,
&data, dataoff, &mscm) < 0)
goto drop;
}
@ -661,7 +678,7 @@ int get_h225_addr(struct nf_conn *ct, unsigned char *data,
/****************************************************************************/
static int expect_h245(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
unsigned int protoff, unsigned char **data, int dataoff,
TransportAddress *taddr)
{
int dir = CTINFO2DIR(ctinfo);
@ -693,7 +710,7 @@ static int expect_h245(struct sk_buff *skb, struct nf_conn *ct,
nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
/* NAT needed */
ret = nat_h245(skb, ct, ctinfo, data, dataoff, taddr,
ret = nat_h245(skb, ct, ctinfo, protoff, data, dataoff, taddr,
port, exp);
} else { /* Conntrack only */
if (nf_ct_expect_related(exp) == 0) {
@ -779,6 +796,7 @@ static int callforward_do_filter(const union nf_inet_addr *src,
static int expect_callforwarding(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
TransportAddress *taddr)
{
@ -817,7 +835,8 @@ static int expect_callforwarding(struct sk_buff *skb,
nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
/* Need NAT */
ret = nat_callforwarding(skb, ct, ctinfo, data, dataoff,
ret = nat_callforwarding(skb, ct, ctinfo,
protoff, data, dataoff,
taddr, port, exp);
} else { /* Conntrack only */
if (nf_ct_expect_related(exp) == 0) {
@ -835,6 +854,7 @@ static int expect_callforwarding(struct sk_buff *skb,
/****************************************************************************/
static int process_setup(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
Setup_UUIE *setup)
{
@ -848,7 +868,7 @@ static int process_setup(struct sk_buff *skb, struct nf_conn *ct,
pr_debug("nf_ct_q931: Setup\n");
if (setup->options & eSetup_UUIE_h245Address) {
ret = expect_h245(skb, ct, ctinfo, data, dataoff,
ret = expect_h245(skb, ct, ctinfo, protoff, data, dataoff,
&setup->h245Address);
if (ret < 0)
return -1;
@ -864,7 +884,7 @@ static int process_setup(struct sk_buff *skb, struct nf_conn *ct,
pr_debug("nf_ct_q931: set destCallSignalAddress %pI6:%hu->%pI6:%hu\n",
&addr, ntohs(port), &ct->tuplehash[!dir].tuple.src.u3,
ntohs(ct->tuplehash[!dir].tuple.src.u.tcp.port));
ret = set_h225_addr(skb, data, dataoff,
ret = set_h225_addr(skb, protoff, data, dataoff,
&setup->destCallSignalAddress,
&ct->tuplehash[!dir].tuple.src.u3,
ct->tuplehash[!dir].tuple.src.u.tcp.port);
@ -881,7 +901,7 @@ static int process_setup(struct sk_buff *skb, struct nf_conn *ct,
pr_debug("nf_ct_q931: set sourceCallSignalAddress %pI6:%hu->%pI6:%hu\n",
&addr, ntohs(port), &ct->tuplehash[!dir].tuple.dst.u3,
ntohs(ct->tuplehash[!dir].tuple.dst.u.tcp.port));
ret = set_h225_addr(skb, data, dataoff,
ret = set_h225_addr(skb, protoff, data, dataoff,
&setup->sourceCallSignalAddress,
&ct->tuplehash[!dir].tuple.dst.u3,
ct->tuplehash[!dir].tuple.dst.u.tcp.port);
@ -891,7 +911,8 @@ static int process_setup(struct sk_buff *skb, struct nf_conn *ct,
if (setup->options & eSetup_UUIE_fastStart) {
for (i = 0; i < setup->fastStart.count; i++) {
ret = process_olc(skb, ct, ctinfo, data, dataoff,
ret = process_olc(skb, ct, ctinfo,
protoff, data, dataoff,
&setup->fastStart.item[i]);
if (ret < 0)
return -1;
@ -905,6 +926,7 @@ static int process_setup(struct sk_buff *skb, struct nf_conn *ct,
static int process_callproceeding(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
CallProceeding_UUIE *callproc)
{
@ -914,7 +936,7 @@ static int process_callproceeding(struct sk_buff *skb,
pr_debug("nf_ct_q931: CallProceeding\n");
if (callproc->options & eCallProceeding_UUIE_h245Address) {
ret = expect_h245(skb, ct, ctinfo, data, dataoff,
ret = expect_h245(skb, ct, ctinfo, protoff, data, dataoff,
&callproc->h245Address);
if (ret < 0)
return -1;
@ -922,7 +944,8 @@ static int process_callproceeding(struct sk_buff *skb,
if (callproc->options & eCallProceeding_UUIE_fastStart) {
for (i = 0; i < callproc->fastStart.count; i++) {
ret = process_olc(skb, ct, ctinfo, data, dataoff,
ret = process_olc(skb, ct, ctinfo,
protoff, data, dataoff,
&callproc->fastStart.item[i]);
if (ret < 0)
return -1;
@ -935,6 +958,7 @@ static int process_callproceeding(struct sk_buff *skb,
/****************************************************************************/
static int process_connect(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
Connect_UUIE *connect)
{
@ -944,7 +968,7 @@ static int process_connect(struct sk_buff *skb, struct nf_conn *ct,
pr_debug("nf_ct_q931: Connect\n");
if (connect->options & eConnect_UUIE_h245Address) {
ret = expect_h245(skb, ct, ctinfo, data, dataoff,
ret = expect_h245(skb, ct, ctinfo, protoff, data, dataoff,
&connect->h245Address);
if (ret < 0)
return -1;
@ -952,7 +976,8 @@ static int process_connect(struct sk_buff *skb, struct nf_conn *ct,
if (connect->options & eConnect_UUIE_fastStart) {
for (i = 0; i < connect->fastStart.count; i++) {
ret = process_olc(skb, ct, ctinfo, data, dataoff,
ret = process_olc(skb, ct, ctinfo,
protoff, data, dataoff,
&connect->fastStart.item[i]);
if (ret < 0)
return -1;
@ -965,6 +990,7 @@ static int process_connect(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_alerting(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
Alerting_UUIE *alert)
{
@ -974,7 +1000,7 @@ static int process_alerting(struct sk_buff *skb, struct nf_conn *ct,
pr_debug("nf_ct_q931: Alerting\n");
if (alert->options & eAlerting_UUIE_h245Address) {
ret = expect_h245(skb, ct, ctinfo, data, dataoff,
ret = expect_h245(skb, ct, ctinfo, protoff, data, dataoff,
&alert->h245Address);
if (ret < 0)
return -1;
@ -982,7 +1008,8 @@ static int process_alerting(struct sk_buff *skb, struct nf_conn *ct,
if (alert->options & eAlerting_UUIE_fastStart) {
for (i = 0; i < alert->fastStart.count; i++) {
ret = process_olc(skb, ct, ctinfo, data, dataoff,
ret = process_olc(skb, ct, ctinfo,
protoff, data, dataoff,
&alert->fastStart.item[i]);
if (ret < 0)
return -1;
@ -995,6 +1022,7 @@ static int process_alerting(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_facility(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
Facility_UUIE *facility)
{
@ -1005,15 +1033,15 @@ static int process_facility(struct sk_buff *skb, struct nf_conn *ct,
if (facility->reason.choice == eFacilityReason_callForwarded) {
if (facility->options & eFacility_UUIE_alternativeAddress)
return expect_callforwarding(skb, ct, ctinfo, data,
dataoff,
return expect_callforwarding(skb, ct, ctinfo,
protoff, data, dataoff,
&facility->
alternativeAddress);
return 0;
}
if (facility->options & eFacility_UUIE_h245Address) {
ret = expect_h245(skb, ct, ctinfo, data, dataoff,
ret = expect_h245(skb, ct, ctinfo, protoff, data, dataoff,
&facility->h245Address);
if (ret < 0)
return -1;
@ -1021,7 +1049,8 @@ static int process_facility(struct sk_buff *skb, struct nf_conn *ct,
if (facility->options & eFacility_UUIE_fastStart) {
for (i = 0; i < facility->fastStart.count; i++) {
ret = process_olc(skb, ct, ctinfo, data, dataoff,
ret = process_olc(skb, ct, ctinfo,
protoff, data, dataoff,
&facility->fastStart.item[i]);
if (ret < 0)
return -1;
@ -1034,6 +1063,7 @@ static int process_facility(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_progress(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, int dataoff,
Progress_UUIE *progress)
{
@ -1043,7 +1073,7 @@ static int process_progress(struct sk_buff *skb, struct nf_conn *ct,
pr_debug("nf_ct_q931: Progress\n");
if (progress->options & eProgress_UUIE_h245Address) {
ret = expect_h245(skb, ct, ctinfo, data, dataoff,
ret = expect_h245(skb, ct, ctinfo, protoff, data, dataoff,
&progress->h245Address);
if (ret < 0)
return -1;
@ -1051,7 +1081,8 @@ static int process_progress(struct sk_buff *skb, struct nf_conn *ct,
if (progress->options & eProgress_UUIE_fastStart) {
for (i = 0; i < progress->fastStart.count; i++) {
ret = process_olc(skb, ct, ctinfo, data, dataoff,
ret = process_olc(skb, ct, ctinfo,
protoff, data, dataoff,
&progress->fastStart.item[i]);
if (ret < 0)
return -1;
@ -1064,7 +1095,8 @@ static int process_progress(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_q931(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff, Q931 *q931)
unsigned int protoff, unsigned char **data, int dataoff,
Q931 *q931)
{
H323_UU_PDU *pdu = &q931->UUIE.h323_uu_pdu;
int i;
@ -1072,28 +1104,29 @@ static int process_q931(struct sk_buff *skb, struct nf_conn *ct,
switch (pdu->h323_message_body.choice) {
case eH323_UU_PDU_h323_message_body_setup:
ret = process_setup(skb, ct, ctinfo, data, dataoff,
ret = process_setup(skb, ct, ctinfo, protoff, data, dataoff,
&pdu->h323_message_body.setup);
break;
case eH323_UU_PDU_h323_message_body_callProceeding:
ret = process_callproceeding(skb, ct, ctinfo, data, dataoff,
ret = process_callproceeding(skb, ct, ctinfo,
protoff, data, dataoff,
&pdu->h323_message_body.
callProceeding);
break;
case eH323_UU_PDU_h323_message_body_connect:
ret = process_connect(skb, ct, ctinfo, data, dataoff,
ret = process_connect(skb, ct, ctinfo, protoff, data, dataoff,
&pdu->h323_message_body.connect);
break;
case eH323_UU_PDU_h323_message_body_alerting:
ret = process_alerting(skb, ct, ctinfo, data, dataoff,
ret = process_alerting(skb, ct, ctinfo, protoff, data, dataoff,
&pdu->h323_message_body.alerting);
break;
case eH323_UU_PDU_h323_message_body_facility:
ret = process_facility(skb, ct, ctinfo, data, dataoff,
ret = process_facility(skb, ct, ctinfo, protoff, data, dataoff,
&pdu->h323_message_body.facility);
break;
case eH323_UU_PDU_h323_message_body_progress:
ret = process_progress(skb, ct, ctinfo, data, dataoff,
ret = process_progress(skb, ct, ctinfo, protoff, data, dataoff,
&pdu->h323_message_body.progress);
break;
default:
@ -1107,7 +1140,8 @@ static int process_q931(struct sk_buff *skb, struct nf_conn *ct,
if (pdu->options & eH323_UU_PDU_h245Control) {
for (i = 0; i < pdu->h245Control.count; i++) {
ret = process_h245(skb, ct, ctinfo, data, dataoff,
ret = process_h245(skb, ct, ctinfo,
protoff, data, dataoff,
&pdu->h245Control.item[i]);
if (ret < 0)
return -1;
@ -1152,7 +1186,8 @@ static int q931_help(struct sk_buff *skb, unsigned int protoff,
}
/* Process Q.931 signal */
if (process_q931(skb, ct, ctinfo, &data, dataoff, &q931) < 0)
if (process_q931(skb, ct, ctinfo, protoff,
&data, dataoff, &q931) < 0)
goto drop;
}
@ -1249,7 +1284,7 @@ static int set_expect_timeout(struct nf_conntrack_expect *exp,
/****************************************************************************/
static int expect_q931(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
unsigned int protoff, unsigned char **data,
TransportAddress *taddr, int count)
{
struct nf_ct_h323_master *info = nfct_help_data(ct);
@ -1286,7 +1321,8 @@ static int expect_q931(struct sk_buff *skb, struct nf_conn *ct,
nat_q931 = rcu_dereference(nat_q931_hook);
if (nat_q931 && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) { /* Need NAT */
ret = nat_q931(skb, ct, ctinfo, data, taddr, i, port, exp);
ret = nat_q931(skb, ct, ctinfo, protoff, data,
taddr, i, port, exp);
} else { /* Conntrack only */
if (nf_ct_expect_related(exp) == 0) {
pr_debug("nf_ct_ras: expect Q.931 ");
@ -1306,6 +1342,7 @@ static int expect_q931(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_grq(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, GatekeeperRequest *grq)
{
typeof(set_ras_addr_hook) set_ras_addr;
@ -1315,7 +1352,7 @@ static int process_grq(struct sk_buff *skb, struct nf_conn *ct,
set_ras_addr = rcu_dereference(set_ras_addr_hook);
if (set_ras_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) /* NATed */
return set_ras_addr(skb, ct, ctinfo, data,
return set_ras_addr(skb, ct, ctinfo, protoff, data,
&grq->rasAddress, 1);
return 0;
}
@ -1323,6 +1360,7 @@ static int process_grq(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_gcf(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, GatekeeperConfirm *gcf)
{
int dir = CTINFO2DIR(ctinfo);
@ -1367,6 +1405,7 @@ static int process_gcf(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_rrq(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, RegistrationRequest *rrq)
{
struct nf_ct_h323_master *info = nfct_help_data(ct);
@ -1375,7 +1414,7 @@ static int process_rrq(struct sk_buff *skb, struct nf_conn *ct,
pr_debug("nf_ct_ras: RRQ\n");
ret = expect_q931(skb, ct, ctinfo, data,
ret = expect_q931(skb, ct, ctinfo, protoff, data,
rrq->callSignalAddress.item,
rrq->callSignalAddress.count);
if (ret < 0)
@ -1384,7 +1423,7 @@ static int process_rrq(struct sk_buff *skb, struct nf_conn *ct,
set_ras_addr = rcu_dereference(set_ras_addr_hook);
if (set_ras_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
ret = set_ras_addr(skb, ct, ctinfo, data,
ret = set_ras_addr(skb, ct, ctinfo, protoff, data,
rrq->rasAddress.item,
rrq->rasAddress.count);
if (ret < 0)
@ -1403,6 +1442,7 @@ static int process_rrq(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_rcf(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, RegistrationConfirm *rcf)
{
struct nf_ct_h323_master *info = nfct_help_data(ct);
@ -1416,7 +1456,7 @@ static int process_rcf(struct sk_buff *skb, struct nf_conn *ct,
set_sig_addr = rcu_dereference(set_sig_addr_hook);
if (set_sig_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
ret = set_sig_addr(skb, ct, ctinfo, data,
ret = set_sig_addr(skb, ct, ctinfo, protoff, data,
rcf->callSignalAddress.item,
rcf->callSignalAddress.count);
if (ret < 0)
@ -1453,6 +1493,7 @@ static int process_rcf(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_urq(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, UnregistrationRequest *urq)
{
struct nf_ct_h323_master *info = nfct_help_data(ct);
@ -1465,7 +1506,7 @@ static int process_urq(struct sk_buff *skb, struct nf_conn *ct,
set_sig_addr = rcu_dereference(set_sig_addr_hook);
if (set_sig_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
ret = set_sig_addr(skb, ct, ctinfo, data,
ret = set_sig_addr(skb, ct, ctinfo, protoff, data,
urq->callSignalAddress.item,
urq->callSignalAddress.count);
if (ret < 0)
@ -1486,6 +1527,7 @@ static int process_urq(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_arq(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, AdmissionRequest *arq)
{
const struct nf_ct_h323_master *info = nfct_help_data(ct);
@ -1505,7 +1547,7 @@ static int process_arq(struct sk_buff *skb, struct nf_conn *ct,
nf_ct_l3num(ct) == NFPROTO_IPV4 &&
set_h225_addr && ct->status & IPS_NAT_MASK) {
/* Answering ARQ */
return set_h225_addr(skb, data, 0,
return set_h225_addr(skb, protoff, data, 0,
&arq->destCallSignalAddress,
&ct->tuplehash[!dir].tuple.dst.u3,
info->sig_port[!dir]);
@ -1518,7 +1560,7 @@ static int process_arq(struct sk_buff *skb, struct nf_conn *ct,
set_h225_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
/* Calling ARQ */
return set_h225_addr(skb, data, 0,
return set_h225_addr(skb, protoff, data, 0,
&arq->srcCallSignalAddress,
&ct->tuplehash[!dir].tuple.dst.u3,
port);
@ -1530,6 +1572,7 @@ static int process_arq(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_acf(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, AdmissionConfirm *acf)
{
int dir = CTINFO2DIR(ctinfo);
@ -1550,7 +1593,7 @@ static int process_acf(struct sk_buff *skb, struct nf_conn *ct,
set_sig_addr = rcu_dereference(set_sig_addr_hook);
if (set_sig_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK)
return set_sig_addr(skb, ct, ctinfo, data,
return set_sig_addr(skb, ct, ctinfo, protoff, data,
&acf->destCallSignalAddress, 1);
return 0;
}
@ -1578,6 +1621,7 @@ static int process_acf(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_lrq(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, LocationRequest *lrq)
{
typeof(set_ras_addr_hook) set_ras_addr;
@ -1587,7 +1631,7 @@ static int process_lrq(struct sk_buff *skb, struct nf_conn *ct,
set_ras_addr = rcu_dereference(set_ras_addr_hook);
if (set_ras_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK)
return set_ras_addr(skb, ct, ctinfo, data,
return set_ras_addr(skb, ct, ctinfo, protoff, data,
&lrq->replyAddress, 1);
return 0;
}
@ -1595,6 +1639,7 @@ static int process_lrq(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_lcf(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, LocationConfirm *lcf)
{
int dir = CTINFO2DIR(ctinfo);
@ -1634,6 +1679,7 @@ static int process_lcf(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_irr(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, InfoRequestResponse *irr)
{
int ret;
@ -1645,7 +1691,7 @@ static int process_irr(struct sk_buff *skb, struct nf_conn *ct,
set_ras_addr = rcu_dereference(set_ras_addr_hook);
if (set_ras_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
ret = set_ras_addr(skb, ct, ctinfo, data,
ret = set_ras_addr(skb, ct, ctinfo, protoff, data,
&irr->rasAddress, 1);
if (ret < 0)
return -1;
@ -1654,7 +1700,7 @@ static int process_irr(struct sk_buff *skb, struct nf_conn *ct,
set_sig_addr = rcu_dereference(set_sig_addr_hook);
if (set_sig_addr && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
ret = set_sig_addr(skb, ct, ctinfo, data,
ret = set_sig_addr(skb, ct, ctinfo, protoff, data,
irr->callSignalAddress.item,
irr->callSignalAddress.count);
if (ret < 0)
@ -1667,38 +1713,39 @@ static int process_irr(struct sk_buff *skb, struct nf_conn *ct,
/****************************************************************************/
static int process_ras(struct sk_buff *skb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned char **data, RasMessage *ras)
{
switch (ras->choice) {
case eRasMessage_gatekeeperRequest:
return process_grq(skb, ct, ctinfo, data,
return process_grq(skb, ct, ctinfo, protoff, data,
&ras->gatekeeperRequest);
case eRasMessage_gatekeeperConfirm:
return process_gcf(skb, ct, ctinfo, data,
return process_gcf(skb, ct, ctinfo, protoff, data,
&ras->gatekeeperConfirm);
case eRasMessage_registrationRequest:
return process_rrq(skb, ct, ctinfo, data,
return process_rrq(skb, ct, ctinfo, protoff, data,
&ras->registrationRequest);
case eRasMessage_registrationConfirm:
return process_rcf(skb, ct, ctinfo, data,
return process_rcf(skb, ct, ctinfo, protoff, data,
&ras->registrationConfirm);
case eRasMessage_unregistrationRequest:
return process_urq(skb, ct, ctinfo, data,
return process_urq(skb, ct, ctinfo, protoff, data,
&ras->unregistrationRequest);
case eRasMessage_admissionRequest:
return process_arq(skb, ct, ctinfo, data,
return process_arq(skb, ct, ctinfo, protoff, data,
&ras->admissionRequest);
case eRasMessage_admissionConfirm:
return process_acf(skb, ct, ctinfo, data,
return process_acf(skb, ct, ctinfo, protoff, data,
&ras->admissionConfirm);
case eRasMessage_locationRequest:
return process_lrq(skb, ct, ctinfo, data,
return process_lrq(skb, ct, ctinfo, protoff, data,
&ras->locationRequest);
case eRasMessage_locationConfirm:
return process_lcf(skb, ct, ctinfo, data,
return process_lcf(skb, ct, ctinfo, protoff, data,
&ras->locationConfirm);
case eRasMessage_infoRequestResponse:
return process_irr(skb, ct, ctinfo, data,
return process_irr(skb, ct, ctinfo, protoff, data,
&ras->infoRequestResponse);
default:
pr_debug("nf_ct_ras: RAS message %d\n", ras->choice);
@ -1738,7 +1785,7 @@ static int ras_help(struct sk_buff *skb, unsigned int protoff,
}
/* Process RAS message */
if (process_ras(skb, ct, ctinfo, &data, &ras) < 0)
if (process_ras(skb, ct, ctinfo, protoff, &data, &ras) < 0)
goto drop;
accept:

3
net/netfilter/nf_conntrack_irc.c
View file

@ -33,6 +33,7 @@ static DEFINE_SPINLOCK(irc_buffer_lock);
unsigned int (*nf_nat_irc_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int protoff,
unsigned int matchoff,
unsigned int matchlen,
struct nf_conntrack_expect *exp) __read_mostly;
@ -206,7 +207,7 @@ static int help(struct sk_buff *skb, unsigned int protoff,
nf_nat_irc = rcu_dereference(nf_nat_irc_hook);
if (nf_nat_irc && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK)
ret = nf_nat_irc(skb, ctinfo,
ret = nf_nat_irc(skb, ctinfo, protoff,
addr_beg_p - ib_ptr,
addr_end_p - addr_beg_p,
exp);

18
net/netfilter/nf_conntrack_pptp.c
View file

@ -45,14 +45,14 @@ static DEFINE_SPINLOCK(nf_pptp_lock);
int
(*nf_nat_pptp_hook_outbound)(struct sk_buff *skb,
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
unsigned int protoff, struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_pptp_hook_outbound);
int
(*nf_nat_pptp_hook_inbound)(struct sk_buff *skb,
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
unsigned int protoff, struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_pptp_hook_inbound);
@ -262,7 +262,7 @@ out_unexpect_orig:
}
static inline int
pptp_inbound_pkt(struct sk_buff *skb,
pptp_inbound_pkt(struct sk_buff *skb, unsigned int protoff,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq,
unsigned int reqlen,
@ -376,7 +376,8 @@ pptp_inbound_pkt(struct sk_buff *skb,
nf_nat_pptp_inbound = rcu_dereference(nf_nat_pptp_hook_inbound);
if (nf_nat_pptp_inbound && ct->status & IPS_NAT_MASK)
return nf_nat_pptp_inbound(skb, ct, ctinfo, ctlh, pptpReq);
return nf_nat_pptp_inbound(skb, ct, ctinfo,
protoff, ctlh, pptpReq);
return NF_ACCEPT;
invalid:
@ -389,7 +390,7 @@ invalid:
}
static inline int
pptp_outbound_pkt(struct sk_buff *skb,
pptp_outbound_pkt(struct sk_buff *skb, unsigned int protoff,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq,
unsigned int reqlen,
@ -471,7 +472,8 @@ pptp_outbound_pkt(struct sk_buff *skb,
nf_nat_pptp_outbound = rcu_dereference(nf_nat_pptp_hook_outbound);
if (nf_nat_pptp_outbound && ct->status & IPS_NAT_MASK)
return nf_nat_pptp_outbound(skb, ct, ctinfo, ctlh, pptpReq);
return nf_nat_pptp_outbound(skb, ct, ctinfo,
protoff, ctlh, pptpReq);
return NF_ACCEPT;
invalid:
@ -570,11 +572,11 @@ conntrack_pptp_help(struct sk_buff *skb, unsigned int protoff,
* established from PNS->PAC. However, RFC makes no guarantee */
if (dir == IP_CT_DIR_ORIGINAL)
/* client -> server (PNS -> PAC) */
ret = pptp_outbound_pkt(skb, ctlh, pptpReq, reqlen, ct,
ret = pptp_outbound_pkt(skb, protoff, ctlh, pptpReq, reqlen, ct,
ctinfo);
else
/* server -> client (PAC -> PNS) */
ret = pptp_inbound_pkt(skb, ctlh, pptpReq, reqlen, ct,
ret = pptp_inbound_pkt(skb, protoff, ctlh, pptpReq, reqlen, ct,
ctinfo);
pr_debug("sstate: %d->%d, cstate: %d->%d\n",
oldsstate, info->sstate, oldcstate, info->cstate);

95
net/netfilter/nf_conntrack_sip.c
View file

@ -52,8 +52,8 @@ module_param(sip_direct_media, int, 0600);
MODULE_PARM_DESC(sip_direct_media, "Expect Media streams between signalling "
"endpoints only (default 1)");
unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb, unsigned int dataoff,
const char **dptr,
unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff, const char **dptr,
unsigned int *datalen) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_sip_hook);
@ -61,6 +61,7 @@ void (*nf_nat_sip_seq_adjust_hook)(struct sk_buff *skb, s16 off) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_sip_seq_adjust_hook);
unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
@ -69,7 +70,8 @@ unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
unsigned int matchlen) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_sip_expect_hook);
unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb, unsigned int dataoff,
unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
unsigned int sdpoff,
@ -79,7 +81,8 @@ unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb, unsigned int dataoff,
__read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_sdp_addr_hook);
unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb, unsigned int dataoff,
unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
unsigned int matchoff,
@ -88,6 +91,7 @@ unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb, unsigned int dataoff,
EXPORT_SYMBOL_GPL(nf_nat_sdp_port_hook);
unsigned int (*nf_nat_sdp_session_hook)(struct sk_buff *skb,
unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
@ -96,7 +100,8 @@ unsigned int (*nf_nat_sdp_session_hook)(struct sk_buff *skb,
__read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_sdp_session_hook);
unsigned int (*nf_nat_sdp_media_hook)(struct sk_buff *skb, unsigned int dataoff,
unsigned int (*nf_nat_sdp_media_hook)(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr,
unsigned int *datalen,
struct nf_conntrack_expect *rtp_exp,
@ -883,7 +888,8 @@ static void flush_expectations(struct nf_conn *ct, bool media)
spin_unlock_bh(&nf_conntrack_lock);
}
static int set_expected_rtp_rtcp(struct sk_buff *skb, unsigned int dataoff,
static int set_expected_rtp_rtcp(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
union nf_inet_addr *daddr, __be16 port,
enum sip_expectation_classes class,
@ -960,7 +966,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb, unsigned int dataoff,
if (direct_rtp) {
nf_nat_sdp_port = rcu_dereference(nf_nat_sdp_port_hook);
if (nf_nat_sdp_port &&
!nf_nat_sdp_port(skb, dataoff, dptr, datalen,
!nf_nat_sdp_port(skb, protoff, dataoff, dptr, datalen,
mediaoff, medialen, ntohs(rtp_port)))
goto err1;
}
@ -983,7 +989,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb, unsigned int dataoff,
nf_nat_sdp_media = rcu_dereference(nf_nat_sdp_media_hook);
if (nf_nat_sdp_media && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK && !direct_rtp)
ret = nf_nat_sdp_media(skb, dataoff, dptr, datalen,
ret = nf_nat_sdp_media(skb, protoff, dataoff, dptr, datalen,
rtp_exp, rtcp_exp,
mediaoff, medialen, daddr);
else {
@ -1024,7 +1030,8 @@ static const struct sdp_media_type *sdp_media_type(const char *dptr,
return NULL;
}
static int process_sdp(struct sk_buff *skb, unsigned int dataoff,
static int process_sdp(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq)
{
@ -1098,7 +1105,8 @@ static int process_sdp(struct sk_buff *skb, unsigned int dataoff,
else
return NF_DROP;
ret = set_expected_rtp_rtcp(skb, dataoff, dptr, datalen,
ret = set_expected_rtp_rtcp(skb, protoff, dataoff,
dptr, datalen,
&rtp_addr, htons(port), t->class,
mediaoff, medialen);
if (ret != NF_ACCEPT)
@ -1107,7 +1115,8 @@ static int process_sdp(struct sk_buff *skb, unsigned int dataoff,
/* Update media connection address if present */
if (maddr_len && nf_nat_sdp_addr &&
nf_ct_l3num(ct) == NFPROTO_IPV4 && ct->status & IPS_NAT_MASK) {
ret = nf_nat_sdp_addr(skb, dataoff, dptr, datalen,
ret = nf_nat_sdp_addr(skb, protoff, dataoff,
dptr, datalen,
mediaoff, c_hdr, SDP_HDR_MEDIA,
&rtp_addr);
if (ret != NF_ACCEPT)
@ -1120,12 +1129,13 @@ static int process_sdp(struct sk_buff *skb, unsigned int dataoff,
nf_nat_sdp_session = rcu_dereference(nf_nat_sdp_session_hook);
if (nf_nat_sdp_session && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK)
ret = nf_nat_sdp_session(skb, dataoff, dptr, datalen, sdpoff,
&rtp_addr);
ret = nf_nat_sdp_session(skb, protoff, dataoff,
dptr, datalen, sdpoff, &rtp_addr);
return ret;
}
static int process_invite_response(struct sk_buff *skb, unsigned int dataoff,
static int process_invite_response(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq, unsigned int code)
{
@ -1135,13 +1145,14 @@ static int process_invite_response(struct sk_buff *skb, unsigned int dataoff,
if ((code >= 100 && code <= 199) ||
(code >= 200 && code <= 299))
return process_sdp(skb, dataoff, dptr, datalen, cseq);
return process_sdp(skb, protoff, dataoff, dptr, datalen, cseq);
else if (ct_sip_info->invite_cseq == cseq)
flush_expectations(ct, true);
return NF_ACCEPT;
}
static int process_update_response(struct sk_buff *skb, unsigned int dataoff,
static int process_update_response(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq, unsigned int code)
{
@ -1151,13 +1162,14 @@ static int process_update_response(struct sk_buff *skb, unsigned int dataoff,
if ((code >= 100 && code <= 199) ||
(code >= 200 && code <= 299))
return process_sdp(skb, dataoff, dptr, datalen, cseq);
return process_sdp(skb, protoff, dataoff, dptr, datalen, cseq);
else if (ct_sip_info->invite_cseq == cseq)
flush_expectations(ct, true);
return NF_ACCEPT;
}
static int process_prack_response(struct sk_buff *skb, unsigned int dataoff,
static int process_prack_response(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq, unsigned int code)
{
@ -1167,13 +1179,14 @@ static int process_prack_response(struct sk_buff *skb, unsigned int dataoff,
if ((code >= 100 && code <= 199) ||
(code >= 200 && code <= 299))
return process_sdp(skb, dataoff, dptr, datalen, cseq);
return process_sdp(skb, protoff, dataoff, dptr, datalen, cseq);
else if (ct_sip_info->invite_cseq == cseq)
flush_expectations(ct, true);
return NF_ACCEPT;
}
static int process_invite_request(struct sk_buff *skb, unsigned int dataoff,
static int process_invite_request(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq)
{
@ -1183,13 +1196,14 @@ static int process_invite_request(struct sk_buff *skb, unsigned int dataoff,
unsigned int ret;
flush_expectations(ct, true);
ret = process_sdp(skb, dataoff, dptr, datalen, cseq);
ret = process_sdp(skb, protoff, dataoff, dptr, datalen, cseq);
if (ret == NF_ACCEPT)
ct_sip_info->invite_cseq = cseq;
return ret;
}
static int process_bye_request(struct sk_buff *skb, unsigned int dataoff,
static int process_bye_request(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq)
{
@ -1204,7 +1218,8 @@ static int process_bye_request(struct sk_buff *skb, unsigned int dataoff,
* signalling connections. The expectation is marked inactive and is activated
* when receiving a response indicating success from the registrar.
*/
static int process_register_request(struct sk_buff *skb, unsigned int dataoff,
static int process_register_request(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq)
{
@ -1280,8 +1295,8 @@ static int process_register_request(struct sk_buff *skb, unsigned int dataoff,
nf_nat_sip_expect = rcu_dereference(nf_nat_sip_expect_hook);
if (nf_nat_sip_expect && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK)
ret = nf_nat_sip_expect(skb, dataoff, dptr, datalen, exp,
matchoff, matchlen);
ret = nf_nat_sip_expect(skb, protoff, dataoff, dptr, datalen,
exp, matchoff, matchlen);
else {
if (nf_ct_expect_related(exp) != 0)
ret = NF_DROP;
@ -1296,7 +1311,8 @@ store_cseq:
return ret;
}
static int process_register_response(struct sk_buff *skb, unsigned int dataoff,
static int process_register_response(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen,
unsigned int cseq, unsigned int code)
{
@ -1378,7 +1394,8 @@ static const struct sip_handler sip_handlers[] = {
SIP_HANDLER("REGISTER", process_register_request, process_register_response),
};
static int process_sip_response(struct sk_buff *skb, unsigned int dataoff,
static int process_sip_response(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen)
{
enum ip_conntrack_info ctinfo;
@ -1409,13 +1426,14 @@ static int process_sip_response(struct sk_buff *skb, unsigned int dataoff,
if (*datalen < matchend + handler->len ||
strnicmp(*dptr + matchend, handler->method, handler->len))
continue;
return handler->response(skb, dataoff, dptr, datalen,
return handler->response(skb, protoff, dataoff, dptr, datalen,
cseq, code);
}
return NF_ACCEPT;
}
static int process_sip_request(struct sk_buff *skb, unsigned int dataoff,
static int process_sip_request(struct sk_buff *skb, unsigned int protoff,
unsigned int dataoff,
const char **dptr, unsigned int *datalen)
{
enum ip_conntrack_info ctinfo;
@ -1440,27 +1458,29 @@ static int process_sip_request(struct sk_buff *skb, unsigned int dataoff,
if (!cseq)
return NF_DROP;
return handler->request(skb, dataoff, dptr, datalen, cseq);
return handler->request(skb, protoff, dataoff, dptr, datalen,
cseq);
}
return NF_ACCEPT;
}
static int process_sip_msg(struct sk_buff *skb, struct nf_conn *ct,
unsigned int dataoff, const char **dptr,
unsigned int *datalen)
unsigned int protoff, unsigned int dataoff,
const char **dptr, unsigned int *datalen)
{
typeof(nf_nat_sip_hook) nf_nat_sip;
int ret;
if (strnicmp(*dptr, "SIP/2.0 ", strlen("SIP/2.0 ")) != 0)
ret = process_sip_request(skb, dataoff, dptr, datalen);
ret = process_sip_request(skb, protoff, dataoff, dptr, datalen);
else
ret = process_sip_response(skb, dataoff, dptr, datalen);
ret = process_sip_response(skb, protoff, dataoff, dptr, datalen);
if (ret == NF_ACCEPT && nf_ct_l3num(ct) == NFPROTO_IPV4 &&
ct->status & IPS_NAT_MASK) {
nf_nat_sip = rcu_dereference(nf_nat_sip_hook);
if (nf_nat_sip && !nf_nat_sip(skb, dataoff, dptr, datalen))
if (nf_nat_sip && !nf_nat_sip(skb, protoff, dataoff,
dptr, datalen))
ret = NF_DROP;
}
@ -1528,7 +1548,8 @@ static int sip_help_tcp(struct sk_buff *skb, unsigned int protoff,
if (msglen > datalen)
return NF_DROP;
ret = process_sip_msg(skb, ct, dataoff, &dptr, &msglen);
ret = process_sip_msg(skb, ct, protoff, dataoff,
&dptr, &msglen);
if (ret != NF_ACCEPT)
break;
diff = msglen - origlen;
@ -1570,7 +1591,7 @@ static int sip_help_udp(struct sk_buff *skb, unsigned int protoff,
if (datalen < strlen("SIP/2.0 200"))
return NF_ACCEPT;
return process_sip_msg(skb, ct, dataoff, &dptr, &datalen);
return process_sip_msg(skb, ct, protoff, dataoff, &dptr, &datalen);
}
static struct nf_conntrack_helper sip[MAX_PORTS][4] __read_mostly;