tools/brcm/K24/hndtools-mipsel-uclibc-4.1.2/include/linux/netfilter_ipv4/ip_conntrack_sip.h

   1 #ifndef _IP_CONNTRACK_SIP_H
   2 #define _IP_CONNTRACK_SIP_H
   3 /* SIP tracking. */
   4
   5 #ifdef __KERNEL__
   6
   7 #include <linux/netfilter_ipv4/lockhelp.h>
   8
   9 /* Protects sip part of conntracks */
  10 DECLARE_LOCK_EXTERN(ip_sip_lock);
  11
  12 #define SIP_PORT        5060    /* UDP */
  13 #define SIP_EXPIRES     3600    /* seconds */
  14 #define RTP_TIMEOUT     180     /* seconds */
  15
  16 #endif /* __KERNEL__ */
  17
  18 /* SIP Request */
  19 #define SIP_INVITE              0x01
  20 #define SIP_ACK                 0x02
  21 #define SIP_BYE                 0x04
  22 /* SIP Response */
  23 #define SIP_100                 0x10
  24 #define SIP_200                 0x20
  25 #define SIP_200_BYE             0x40
  26 /* SIP session direction */
  27 #define SIP_OUTGOING            0
  28 #define SIP_INCOMING            1
  29
  30 enum ip_ct_conntype
  31 {
  32         CONN_SIP,
  33         CONN_RTP,
  34         CONN_RTCP,
  35 };
  36
  37 /* This structure is per expected connection */
  38 struct ip_ct_sip_expect
  39 {
  40         u_int16_t port;                 /* TCP port that was to be used */
  41
  42         enum ip_ct_conntype type;
  43         int nated;
  44 };
  45
  46 /* This structure exists only once per master */
  47 struct ip_ct_sip_master {
  48         int mangled;
  49         u_int16_t rtpport;
  50 };
  51
  52 extern u_int16_t find_sdp_audio_port(const char *data, size_t dlen,
  53                 unsigned int *numoff, unsigned int *numlen);
  54 extern int find_sdp_rtp_addr(const char *data, size_t dlen,
  55                         unsigned int *numoff, unsigned int *numlen, u_int32_t *addr);
  56 #endif /* _IP_CONNTRACK_SIP_H */