mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-23 18:17:32 +02:00
kernel: remove the cisco SIP NAT patch, at least on 3.6 it crashes
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34901 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd
parent
73af5c02d5
commit
5e4cd88141
@ -1,118 +0,0 @@
|
||||
--- a/include/linux/netfilter/nf_conntrack_sip.h
|
||||
+++ b/include/linux/netfilter/nf_conntrack_sip.h
|
||||
@@ -2,12 +2,15 @@
|
||||
#define __NF_CONNTRACK_SIP_H__
|
||||
#ifdef __KERNEL__
|
||||
|
||||
+#include <linux/types.h>
|
||||
+
|
||||
#define SIP_PORT 5060
|
||||
#define SIP_TIMEOUT 3600
|
||||
|
||||
struct nf_ct_sip_master {
|
||||
unsigned int register_cseq;
|
||||
unsigned int invite_cseq;
|
||||
+ __be16 forced_dport;
|
||||
};
|
||||
|
||||
enum sip_expectation_classes {
|
||||
--- a/net/ipv4/netfilter/nf_nat_sip.c
|
||||
+++ b/net/ipv4/netfilter/nf_nat_sip.c
|
||||
@@ -73,6 +73,7 @@ static int map_addr(struct sk_buff *skb,
|
||||
enum ip_conntrack_info ctinfo;
|
||||
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
|
||||
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
|
||||
+ struct nf_conn_help *help = nfct_help(ct);
|
||||
char buffer[sizeof("nnn.nnn.nnn.nnn:nnnnn")];
|
||||
unsigned int buflen;
|
||||
__be32 newaddr;
|
||||
@@ -85,7 +86,8 @@ static int map_addr(struct sk_buff *skb,
|
||||
} else if (ct->tuplehash[dir].tuple.dst.u3.ip == addr->ip &&
|
||||
ct->tuplehash[dir].tuple.dst.u.udp.port == port) {
|
||||
newaddr = ct->tuplehash[!dir].tuple.src.u3.ip;
|
||||
- newport = ct->tuplehash[!dir].tuple.src.u.udp.port;
|
||||
+ newport = help->help.ct_sip_info.forced_dport ? :
|
||||
+ ct->tuplehash[!dir].tuple.src.u.udp.port;
|
||||
} else
|
||||
return 1;
|
||||
|
||||
@@ -121,6 +123,7 @@ static unsigned int ip_nat_sip(struct sk
|
||||
enum ip_conntrack_info ctinfo;
|
||||
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
|
||||
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
|
||||
+ struct nf_conn_help *help = nfct_help(ct);
|
||||
unsigned int coff, matchoff, matchlen;
|
||||
enum sip_header_types hdr;
|
||||
union nf_inet_addr addr;
|
||||
@@ -229,6 +232,20 @@ next:
|
||||
!map_sip_addr(skb, dataoff, dptr, datalen, SIP_HDR_TO))
|
||||
return NF_DROP;
|
||||
|
||||
+ /* Mangle destination port for Cisco phones, then fix up checksums */
|
||||
+ if (dir == IP_CT_DIR_REPLY && help->help.ct_sip_info.forced_dport) {
|
||||
+ struct udphdr *uh;
|
||||
+
|
||||
+ if (!skb_make_writable(skb, skb->len))
|
||||
+ return NF_DROP;
|
||||
+
|
||||
+ uh = (struct udphdr *)(skb->data + ip_hdrlen(skb));
|
||||
+ uh->dest = help->help.ct_sip_info.forced_dport;
|
||||
+
|
||||
+ if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo, 0, 0, NULL, 0))
|
||||
+ return NF_DROP;
|
||||
+ }
|
||||
+
|
||||
return NF_ACCEPT;
|
||||
}
|
||||
|
||||
@@ -280,8 +297,10 @@ static unsigned int ip_nat_sip_expect(st
|
||||
enum ip_conntrack_info ctinfo;
|
||||
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
|
||||
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
|
||||
+ struct nf_conn_help *help = nfct_help(ct);
|
||||
__be32 newip;
|
||||
u_int16_t port;
|
||||
+ __be16 srcport;
|
||||
char buffer[sizeof("nnn.nnn.nnn.nnn:nnnnn")];
|
||||
unsigned buflen;
|
||||
|
||||
@@ -294,8 +313,9 @@ static unsigned int ip_nat_sip_expect(st
|
||||
/* If the signalling port matches the connection's source port in the
|
||||
* original direction, try to use the destination port in the opposite
|
||||
* direction. */
|
||||
- if (exp->tuple.dst.u.udp.port ==
|
||||
- ct->tuplehash[dir].tuple.src.u.udp.port)
|
||||
+ srcport = help->help.ct_sip_info.forced_dport ? :
|
||||
+ ct->tuplehash[dir].tuple.src.u.udp.port;
|
||||
+ if (exp->tuple.dst.u.udp.port == srcport)
|
||||
port = ntohs(ct->tuplehash[!dir].tuple.dst.u.udp.port);
|
||||
else
|
||||
port = ntohs(exp->tuple.dst.u.udp.port);
|
||||
--- a/net/netfilter/nf_conntrack_sip.c
|
||||
+++ b/net/netfilter/nf_conntrack_sip.c
|
||||
@@ -1363,8 +1363,25 @@ static int process_sip_request(struct sk
|
||||
{
|
||||
enum ip_conntrack_info ctinfo;
|
||||
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
|
||||
+ struct nf_conn_help *help = nfct_help(ct);
|
||||
+ enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
|
||||
unsigned int matchoff, matchlen;
|
||||
unsigned int cseq, i;
|
||||
+ union nf_inet_addr addr;
|
||||
+ __be16 port;
|
||||
+
|
||||
+ /* Many Cisco IP phones use a high source port for SIP requests, but
|
||||
+ * listen for the response on port 5060. If we are the local
|
||||
+ * router for one of these phones, save the port number from the
|
||||
+ * Via: header so that nf_nat_sip can redirect the responses to
|
||||
+ * the correct port.
|
||||
+ */
|
||||
+ if (ct_sip_parse_header_uri(ct, *dptr, NULL, *datalen,
|
||||
+ SIP_HDR_VIA_UDP, NULL, &matchoff,
|
||||
+ &matchlen, &addr, &port) > 0 &&
|
||||
+ port != ct->tuplehash[dir].tuple.src.u.udp.port &&
|
||||
+ nf_inet_addr_cmp(&addr, &ct->tuplehash[dir].tuple.src.u3))
|
||||
+ help->help.ct_sip_info.forced_dport = port;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(sip_handlers); i++) {
|
||||
const struct sip_handler *handler;
|
||||
@ -1,118 +0,0 @@
|
||||
--- a/include/linux/netfilter/nf_conntrack_sip.h
|
||||
+++ b/include/linux/netfilter/nf_conntrack_sip.h
|
||||
@@ -4,12 +4,15 @@
|
||||
|
||||
#include <net/netfilter/nf_conntrack_expect.h>
|
||||
|
||||
+#include <linux/types.h>
|
||||
+
|
||||
#define SIP_PORT 5060
|
||||
#define SIP_TIMEOUT 3600
|
||||
|
||||
struct nf_ct_sip_master {
|
||||
unsigned int register_cseq;
|
||||
unsigned int invite_cseq;
|
||||
+ __be16 forced_dport;
|
||||
};
|
||||
|
||||
enum sip_expectation_classes {
|
||||
--- a/net/ipv4/netfilter/nf_nat_sip.c
|
||||
+++ b/net/ipv4/netfilter/nf_nat_sip.c
|
||||
@@ -73,6 +73,7 @@ static int map_addr(struct sk_buff *skb,
|
||||
enum ip_conntrack_info ctinfo;
|
||||
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
|
||||
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
|
||||
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct);
|
||||
char buffer[sizeof("nnn.nnn.nnn.nnn:nnnnn")];
|
||||
unsigned int buflen;
|
||||
__be32 newaddr;
|
||||
@@ -85,7 +86,8 @@ static int map_addr(struct sk_buff *skb,
|
||||
} else if (ct->tuplehash[dir].tuple.dst.u3.ip == addr->ip &&
|
||||
ct->tuplehash[dir].tuple.dst.u.udp.port == port) {
|
||||
newaddr = ct->tuplehash[!dir].tuple.src.u3.ip;
|
||||
- newport = ct->tuplehash[!dir].tuple.src.u.udp.port;
|
||||
+ newport = ct_sip_info->forced_dport ? ct_sip_info->forced_dport :
|
||||
+ ct->tuplehash[!dir].tuple.src.u.udp.port;
|
||||
} else
|
||||
return 1;
|
||||
|
||||
@@ -121,6 +123,7 @@ static unsigned int ip_nat_sip(struct sk
|
||||
enum ip_conntrack_info ctinfo;
|
||||
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
|
||||
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
|
||||
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct);
|
||||
unsigned int coff, matchoff, matchlen;
|
||||
enum sip_header_types hdr;
|
||||
union nf_inet_addr addr;
|
||||
@@ -230,6 +233,20 @@ next:
|
||||
!map_sip_addr(skb, dataoff, dptr, datalen, SIP_HDR_TO))
|
||||
return NF_DROP;
|
||||
|
||||
+ /* Mangle destination port for Cisco phones, then fix up checksums */
|
||||
+ if (dir == IP_CT_DIR_REPLY && ct_sip_info->forced_dport) {
|
||||
+ struct udphdr *uh;
|
||||
+
|
||||
+ if (!skb_make_writable(skb, skb->len))
|
||||
+ return NF_DROP;
|
||||
+
|
||||
+ uh = (struct udphdr *)(skb->data + ip_hdrlen(skb));
|
||||
+ uh->dest = ct_sip_info->forced_dport;
|
||||
+
|
||||
+ if (!nf_nat_mangle_udp_packet(skb, ct, ctinfo, 0, 0, NULL, 0))
|
||||
+ return NF_DROP;
|
||||
+ }
|
||||
+
|
||||
return NF_ACCEPT;
|
||||
}
|
||||
|
||||
@@ -281,8 +298,10 @@ static unsigned int ip_nat_sip_expect(st
|
||||
enum ip_conntrack_info ctinfo;
|
||||
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
|
||||
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
|
||||
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct);
|
||||
__be32 newip;
|
||||
u_int16_t port;
|
||||
+ __be16 srcport;
|
||||
char buffer[sizeof("nnn.nnn.nnn.nnn:nnnnn")];
|
||||
unsigned int buflen;
|
||||
|
||||
@@ -295,8 +314,9 @@ static unsigned int ip_nat_sip_expect(st
|
||||
/* If the signalling port matches the connection's source port in the
|
||||
* original direction, try to use the destination port in the opposite
|
||||
* direction. */
|
||||
- if (exp->tuple.dst.u.udp.port ==
|
||||
- ct->tuplehash[dir].tuple.src.u.udp.port)
|
||||
+ srcport = ct_sip_info->forced_dport ? ct_sip_info->forced_dport :
|
||||
+ ct->tuplehash[dir].tuple.src.u.udp.port;
|
||||
+ if (exp->tuple.dst.u.udp.port == srcport)
|
||||
port = ntohs(ct->tuplehash[!dir].tuple.dst.u.udp.port);
|
||||
else
|
||||
port = ntohs(exp->tuple.dst.u.udp.port);
|
||||
--- a/net/netfilter/nf_conntrack_sip.c
|
||||
+++ b/net/netfilter/nf_conntrack_sip.c
|
||||
@@ -1416,8 +1416,25 @@ static int process_sip_request(struct sk
|
||||
{
|
||||
enum ip_conntrack_info ctinfo;
|
||||
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
|
||||
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct);
|
||||
+ enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
|
||||
unsigned int matchoff, matchlen;
|
||||
unsigned int cseq, i;
|
||||
+ union nf_inet_addr addr;
|
||||
+ __be16 port;
|
||||
+
|
||||
+ /* Many Cisco IP phones use a high source port for SIP requests, but
|
||||
+ * listen for the response on port 5060. If we are the local
|
||||
+ * router for one of these phones, save the port number from the
|
||||
+ * Via: header so that nf_nat_sip can redirect the responses to
|
||||
+ * the correct port.
|
||||
+ */
|
||||
+ if (ct_sip_parse_header_uri(ct, *dptr, NULL, *datalen,
|
||||
+ SIP_HDR_VIA_UDP, NULL, &matchoff,
|
||||
+ &matchlen, &addr, &port) > 0 &&
|
||||
+ port != ct->tuplehash[dir].tuple.src.u.udp.port &&
|
||||
+ nf_inet_addr_cmp(&addr, &ct->tuplehash[dir].tuple.src.u3))
|
||||
+ ct_sip_info->forced_dport = port;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(sip_handlers); i++) {
|
||||
const struct sip_handler *handler;
|
||||
Loading…
Reference in New Issue
Block a user