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/* OpenBSC BSC code */
#ifndef OSMO_BSC_H
#define OSMO_BSC_H
#include "bsc_api.h"
#include "bsc_msg_filter.h"
#define BSS_SEND_USSD 1
enum bsc_con {
BSC_CON_SUCCESS,
BSC_CON_REJECT_NO_LINK,
BSC_CON_REJECT_RF_GRACE,
BSC_CON_NO_MEM,
};
struct bsc_msc_data;
struct bsc_msc_connection;
struct osmo_bsc_sccp_con {
/* list_head anchoring us to gsm_network.subscr_conns */
struct llist_head entry;
/* flag to prevent multiple simultaneous ciphering commands */
int ciphering_handled;
/* for audio handling */
struct {
uint16_t cic;
uint32_t rtp_ip;
int rtp_port;
/* RTP address of the remote end (assigned by MSC through assignment request) */
struct sockaddr_storage aoip_rtp_addr_remote;
/* Local RTP address (reported back to the MSC by us with the
* assignment complete message) */
struct sockaddr_storage aoip_rtp_addr_local;
/* storage to keep states of the MGCP connection handler, the
* handler is created when an assignment request is received
* and is terminated when the assignment complete message is
* sent */
struct mgcp_ctx *mgcp_ctx;
} user_plane;
/* for advanced ping/pong */
int send_ping;
/* SCCP connection realted */
struct bsc_msc_data *msc;
/* back-pointer to subscriber connection */
struct gsm_subscriber_connection *conn;
/* state related to welcome USSD */
uint8_t new_subscriber;
/* state related to osmo_bsc_filter.c */
struct bsc_filter_state filter_state;
/* Sigtran connection ID */
int conn_id;
};
struct bsc_api *osmo_bsc_api();
int bsc_queue_for_msc(struct osmo_bsc_sccp_con *conn, struct msgb *msg);
int bsc_open_connection(struct osmo_bsc_sccp_con *sccp, struct msgb *msg);
enum bsc_con bsc_create_new_connection(struct gsm_subscriber_connection *conn,
struct bsc_msc_data *msc, int send_ping);
int bsc_delete_connection(struct osmo_bsc_sccp_con *sccp);
struct bsc_msc_data *bsc_find_msc(struct gsm_subscriber_connection *conn, struct msgb *);
int bsc_scan_bts_msg(struct gsm_subscriber_connection *conn, struct msgb *msg);
int bsc_scan_msc_msg(struct gsm_subscriber_connection *conn, struct msgb *msg);
int bsc_send_welcome_ussd(struct gsm_subscriber_connection *conn);
int bsc_handle_udt(struct bsc_msc_data *msc, struct msgb *msg, unsigned int length);
int bsc_handle_dt(struct osmo_bsc_sccp_con *conn, struct msgb *msg, unsigned int len);
int bsc_ctrl_cmds_install();
void bsc_gen_location_state_trap(struct gsm_bts *bts);
struct llist_head *bsc_access_lists(void);
int bssmap_send_aoip_ass_compl(struct gsm_lchan *lchan);
#endif
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