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| author | Patrick McHardy <kaber@trash.net> | 2008-03-25 20:26:43 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-25 20:26:43 -0700 |
| commit | c7f485abd618e0d249bdd1abdc586bd10fee1954 (patch) | |
| tree | 618ad078a96c0f7c641efaa38f0d363ee2775e42 /include/linux/netfilter | |
| parent | 0d0ab0378d67517a4f4ae3497706c13d9dd24af1 (diff) | |
| download | linux-0-day-c7f485abd618e0d249bdd1abdc586bd10fee1954.tar.gz linux-0-day-c7f485abd618e0d249bdd1abdc586bd10fee1954.tar.xz | |
[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.h | 6 |
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 71fa3eb5f4856..5da04e586a3fb 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, |