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kernel: fix porting mistakes on the 3.6+ SIP NAT patch causing crashes 

SVN-Revision: 34657
lede-17.01
Felix Fietkau 2012-12-13 13:07:13 +00:00
parent 64f0b22052
commit 2bb7f82d8a
2 changed files with 20 additions and 46 deletions
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33
target/linux/generic/patches-3.6/604-netfilter_cisco_794x_iphone.patch
View File

@ -18,27 +18,20 @@
enum sip_expectation_classes {
--- a/net/ipv4/netfilter/nf_nat_sip.c
+++ b/net/ipv4/netfilter/nf_nat_sip.c
@@ -73,11 +73,14 @@ static int map_addr(struct sk_buff *skb,
@@ -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;
+ 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;
__be16 newport;
+ ct_sip_info = nfct_help_data(ct->master);
+
if (ct->tuplehash[dir].tuple.src.u3.ip == addr->ip &&
ct->tuplehash[dir].tuple.src.u.udp.port == port) {
newaddr = ct->tuplehash[!dir].tuple.dst.u3.ip;
@@ -85,7 +88,8 @@ 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 ? :
+ newport = ct_sip_info->forced_dport ? ct_sip_info->forced_dport :
+ ct->tuplehash[!dir].tuple.src.u.udp.port;
} else
return 1;
@ -47,16 +40,14 @@
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);
+ 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 +235,22 @@ next:
@@ -230,6 +235,20 @@ next:
!map_sip_addr(skb, dataoff, dptr, datalen, SIP_HDR_TO))
return NF_DROP;
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct->master);
+
+ /* Mangle destination port for Cisco phones, then fix up checksums */
+ if (dir == IP_CT_DIR_REPLY && ct_sip_info->forced_dport) {
+ struct udphdr *uh;
@ -74,27 +65,24 @@
return NF_ACCEPT;
}
@@ -281,10 +302,13 @@ static unsigned int ip_nat_sip_expect(st
@@ -281,8 +302,10 @@ 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);
+ 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;
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct->master);
/* Connection will come from reply */
if (ct->tuplehash[dir].tuple.src.u3.ip == ct->tuplehash[!dir].tuple.dst.u3.ip)
@@ -295,8 +319,9 @@ 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 ? :
+ 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);
@ -102,17 +90,16 @@
port = ntohs(exp->tuple.dst.u.udp.port);
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1416,8 +1416,26 @@ static int process_sip_request(struct sk
@@ -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_conn_help *help = nfct_help(ct);
+ 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;
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct->master);
+
+ /* 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

33
target/linux/generic/patches-3.7/604-netfilter_cisco_794x_iphone.patch
View File

@ -18,27 +18,20 @@
enum sip_expectation_classes {
--- a/net/netfilter/nf_nat_sip.c
+++ b/net/netfilter/nf_nat_sip.c
@@ -95,11 +95,14 @@ static int map_addr(struct sk_buff *skb,
@@ -95,6 +95,7 @@ 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;
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct);
char buffer[INET6_ADDRSTRLEN + sizeof("[]:nnnnn")];
unsigned int buflen;
union nf_inet_addr newaddr;
__be16 newport;
+ ct_sip_info = nfct_help_data(ct->master);
+
if (nf_inet_addr_cmp(&ct->tuplehash[dir].tuple.src.u3, addr) &&
ct->tuplehash[dir].tuple.src.u.udp.port == port) {
newaddr = ct->tuplehash[!dir].tuple.dst.u3;
@@ -107,7 +110,8 @@ static int map_addr(struct sk_buff *skb,
} else if (nf_inet_addr_cmp(&ct->tuplehash[dir].tuple.dst.u3, addr) &&
ct->tuplehash[dir].tuple.dst.u.udp.port == port) {
newaddr = ct->tuplehash[!dir].tuple.src.u3;
- newport = ct->tuplehash[!dir].tuple.src.u.udp.port;
+ newport = ct_sip_info->forced_dport ? :
+ newport = ct_sip_info->forced_dport ? ct_sip_info->forced_dport :
+ ct->tuplehash[!dir].tuple.src.u.udp.port;
} else
return 1;
@ -47,16 +40,14 @@
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);
+ 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;
@@ -258,6 +263,22 @@ next:
@@ -258,6 +263,20 @@ next:
!map_sip_addr(skb, protoff, dataoff, dptr, datalen, SIP_HDR_TO))
return NF_DROP;
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct->master);
+
+ /* Mangle destination port for Cisco phones, then fix up checksums */
+ if (dir == IP_CT_DIR_REPLY && ct_sip_info->forced_dport) {
+ struct udphdr *uh;
@ -74,27 +65,24 @@
return NF_ACCEPT;
}
@@ -311,10 +332,13 @@ static unsigned int nf_nat_sip_expect(st
@@ -311,8 +332,10 @@ static unsigned int nf_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);
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct);
union nf_inet_addr newaddr;
u_int16_t port;
+ __be16 srcport;
char buffer[INET6_ADDRSTRLEN + sizeof("[]:nnnnn")];
unsigned int buflen;
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct->master);
/* Connection will come from reply */
if (nf_inet_addr_cmp(&ct->tuplehash[dir].tuple.src.u3,
@@ -326,8 +350,9 @@ static unsigned int nf_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 ? :
+ 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);
@ -102,17 +90,16 @@
port = ntohs(exp->tuple.dst.u.udp.port);
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1440,8 +1440,26 @@ static int process_sip_request(struct sk
@@ -1440,8 +1440,25 @@ 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);
+ 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;
+ struct nf_ct_sip_master *ct_sip_info = nfct_help_data(ct->master);
+
+ /* 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