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authorPatrick McHardy <kaber@trash.net>2008-03-25 20:25:13 -0700
committerDavid S. Miller <davem@davemloft.net>2008-03-25 20:25:13 -0700
commit0f32a40fc91a9ebbbf66e826ac2a829ab37d9cf8 (patch)
tree0c221d19a91fa5ab4d746480438ea0f47031062d /include/linux/netfilter
parentc978cd3a937141deaf7995b849824af6dacdeae7 (diff)
[NETFILTER]: nf_conntrack_sip: create signalling expectations
Create expectations for incoming signalling connections when seeing a REGISTER request. This is needed when the registrar uses a different source port number for signalling messages and for receiving incoming calls from other endpoints than the registrar. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netfilter')
-rw-r--r--include/linux/netfilter/nf_conntrack_sip.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/netfilter/nf_conntrack_sip.h b/include/linux/netfilter/nf_conntrack_sip.h
index 87e402825db..7cc84ed0c5d 100644
--- a/include/linux/netfilter/nf_conntrack_sip.h
+++ b/include/linux/netfilter/nf_conntrack_sip.h
@@ -5,6 +5,17 @@
#define SIP_PORT 5060
#define SIP_TIMEOUT 3600
+struct nf_ct_sip_master {
+ unsigned int register_cseq;
+};
+
+enum sip_expectation_classes {
+ SIP_EXPECT_SIGNALLING,
+ SIP_EXPECT_AUDIO,
+ __SIP_EXPECT_MAX
+};
+#define SIP_EXPECT_MAX (__SIP_EXPECT_MAX - 1)
+
struct sip_handler {
const char *method;
unsigned int len;
@@ -59,6 +70,7 @@ enum sip_header_types {
SIP_HDR_TO,
SIP_HDR_CONTACT,
SIP_HDR_VIA,
+ SIP_HDR_EXPIRES,
SIP_HDR_CONTENT_LENGTH,
};
@@ -75,6 +87,12 @@ enum sdp_header_types {
extern unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
const char **dptr,
unsigned int *datalen);
+extern unsigned int (*nf_nat_sip_expect_hook)(struct sk_buff *skb,
+ const char **dptr,
+ unsigned int *datalen,
+ struct nf_conntrack_expect *exp,
+ unsigned int matchoff,
+ unsigned int matchlen);
extern unsigned int (*nf_nat_sdp_hook)(struct sk_buff *skb,
const char **dptr,
unsigned int *datalen,