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authorPatrick McHardy <kaber@trash.net>2008-03-25 20:26:43 -0700
committerDavid S. Miller <davem@davemloft.net>2008-03-25 20:26:43 -0700
commitc7f485abd618e0d249bdd1abdc586bd10fee1954 (patch)
tree618ad078a96c0f7c641efaa38f0d363ee2775e42 /include/linux/netfilter
parent0d0ab0378d67517a4f4ae3497706c13d9dd24af1 (diff)
[NETFILTER]: nf_conntrack_sip: RTP routing optimization
Optimize call routing between NATed endpoints: when an external registrar sends a media description that contains an existing RTP expectation from a different SNATed connection, the gatekeeper is trying to route the call directly between the two endpoints. We assume both endpoints can reach each other directly and "un-NAT" the addresses, which makes the media stream go between the two endpoints directly. 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.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/netfilter/nf_conntrack_sip.h b/include/linux/netfilter/nf_conntrack_sip.h
index 71fa3eb5f48..5da04e586a3 100644
--- a/include/linux/netfilter/nf_conntrack_sip.h
+++ b/include/linux/netfilter/nf_conntrack_sip.h
@@ -114,6 +114,12 @@ extern unsigned int (*nf_nat_sdp_addr_hook)(struct sk_buff *skb,
enum sdp_header_types type,
enum sdp_header_types term,
const union nf_inet_addr *addr);
+extern unsigned int (*nf_nat_sdp_port_hook)(struct sk_buff *skb,
+ const char **dptr,
+ unsigned int *datalen,
+ unsigned int matchoff,
+ unsigned int matchlen,
+ u_int16_t port);
extern unsigned int (*nf_nat_sdp_session_hook)(struct sk_buff *skb,
const char **dptr,
unsigned int dataoff,