+static inline void
+nat_syslog_nat44_sess (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto, u8 is_add,
+ u8 is_twicenat)
+{
+ syslog_msg_t syslog_msg;
+ fib_table_t *fib;
+
+ if (!syslog_is_enabled ())
+ return;
+
+ if (syslog_severity_filter_block (SADD_SDEL_SEVERITY))
+ return;
+
+ fib = fib_table_get (sfibix, FIB_PROTOCOL_IP4);
+
+ syslog_msg_init (&syslog_msg, NAT_FACILITY, SADD_SDEL_SEVERITY, NAT_APPNAME,
+ is_add ? SADD_MSGID : SDEL_MSGID);
+
+ syslog_msg_sd_init (&syslog_msg, NSESS_SDID);
+ syslog_msg_add_sd_param (&syslog_msg, SSUBIX_SDPARAM_NAME, "%d", ssubix);
+ syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d",
+ fib->ft_table_id);
+ syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV4);
+ syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, isaddr);
+ syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (isport));
+ syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4);
+ syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, xsaddr);
+ syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (xsport));
+ syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d", proto);
+ syslog_msg_add_sd_param (&syslog_msg, XDADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, xdaddr);
+ syslog_msg_add_sd_param (&syslog_msg, XDPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (xdport));
+ if (is_twicenat)
+ {
+ syslog_msg_add_sd_param (&syslog_msg, IDADDR_SDPARAM_NAME, "%U",
+ format_ip4_address, idaddr);
+ syslog_msg_add_sd_param (&syslog_msg, IDPORT_SDPARAM_NAME, "%d",
+ clib_net_to_host_u16 (idport));
+ }
+
+ syslog_msg_send (&syslog_msg);
+}
+
+void
+nat_syslog_nat44_sadd (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto,
+ u8 is_twicenat)
+{
+ nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
+ idaddr, idport, xdaddr, xdport, proto, 1,
+ is_twicenat);
+}
+
+void
+nat_syslog_nat44_sdel (u32 ssubix, u32 sfibix, ip4_address_t *isaddr,
+ u16 isport, ip4_address_t *idaddr, u16 idport,
+ ip4_address_t *xsaddr, u16 xsport,
+ ip4_address_t *xdaddr, u16 xdport, u8 proto,
+ u8 is_twicenat)
+{
+ nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport,
+ idaddr, idport, xdaddr, xdport, proto, 0,
+ is_twicenat);
+}
+
+u8 *
+format_nat44_ed_tcp_state (u8 *s, va_list *args)
+{
+ nat44_ed_tcp_state_e e = va_arg (*args, nat44_ed_tcp_state_e);
+ switch (e)
+ {
+ case NAT44_ED_TCP_STATE_CLOSED:
+ s = format (s, "closed");
+ break;
+ case NAT44_ED_TCP_STATE_SYN_I2O:
+ s = format (s, "SYN seen in in2out direction");
+ break;
+ case NAT44_ED_TCP_STATE_SYN_O2I:
+ s = format (s, "SYN seen in out2in direction");
+ break;
+ case NAT44_ED_TCP_STATE_ESTABLISHED:
+ s = format (s, "SYN seen in both directions/established");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_I2O:
+ s = format (s, "FIN seen in in2out direction");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_O2I:
+ s = format (s, "FIN seen in out2in direction");
+ break;
+ case NAT44_ED_TCP_STATE_RST_TRANS:
+ s = format (s, "RST seen/transitory timeout");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_TRANS:
+ s = format (s, "FIN seen in both directions/transitory timeout");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_REOPEN_SYN_O2I:
+ s = format (s, "FIN seen in both directions/transitory timeout/session "
+ "reopening in out2in direction");
+ break;
+ case NAT44_ED_TCP_STATE_FIN_REOPEN_SYN_I2O:
+ s = format (s, "FIN seen in both directions/transitory timeout/session "
+ "reopening in in2out direction");
+ break;
+ case NAT44_ED_TCP_N_STATE:
+ s = format (s, "BUG! unexpected N_STATE! BUG!");
+ break;
+ }
+ return s;
+}
+