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#pragma once
#include <osmocom/core/fsm.h>
#include <osmocom/core/prim.h>
#include <osmocom/sigtran/sccp_sap.h>
#include <osmocom/sigtran/osmo_ss7.h>
/* an instance of the SCCP stack */
struct osmo_sccp_instance {
/* entry in global list of ss7 instances */
struct llist_head list;
/* list of 'struct sccp_connection' in this instance */
struct llist_head connections;
/* list of SCCP users in this instance */
struct llist_head users;
/* routing context to be used in all outbound messages */
uint32_t route_ctx;
/* next local reference to allocate */
uint32_t next_id;
struct osmo_ss7_instance *ss7;
void *priv;
struct osmo_ss7_user ss7_user;
};
struct osmo_sccp_user {
/*! \brief entry in list of sccp users of \ref osmo_sccp_instance */
struct llist_head list;
/*! \brief pointer back to SCCP instance */
struct osmo_sccp_instance *inst;
/*! \brief human-readable name of this user */
char *name;
/*! \brief SSN and/or point code to which we are bound */
uint16_t ssn;
uint32_t pc;
bool pc_valid;
/* set if we are a server */
struct llist_head links;
/* user call-back function in case of incoming primitives */
osmo_prim_cb prim_cb;
void *priv;
/* Application Server FSM Instance */
struct osmo_fsm_inst *as_fi;
};
extern int DSCCP;
struct xua_msg;
struct osmo_sccp_user *
sccp_user_find(struct osmo_sccp_instance *inst, uint16_t ssn, uint32_t pc);
/* Message from SCOC -> SCRC */
int sccp_scrc_rx_scoc_conn_msg(struct osmo_sccp_instance *inst,
struct xua_msg *xua);
/* Message from SCLC -> SCRC */
int sccp_scrc_rx_sclc_msg(struct osmo_sccp_instance *inst, struct xua_msg *xua);
/* Message from MTP (SUA) -> SCRC */
int scrc_rx_mtp_xfer_ind_xua(struct osmo_sccp_instance *inst,
struct xua_msg *xua);
/* Message from SCRC -> SCOC */
void sccp_scoc_rx_from_scrc(struct osmo_sccp_instance *inst,
struct xua_msg *xua);
void sccp_scoc_rx_scrc_rout_fail(struct osmo_sccp_instance *inst,
struct xua_msg *xua, uint32_t cause);
void sccp_scoc_flush_connections(struct osmo_sccp_instance *inst);
/* Message from SCRC -> SCLC */
int sccp_sclc_rx_from_scrc(struct osmo_sccp_instance *inst,
struct xua_msg *xua);
void sccp_sclc_rx_scrc_rout_fail(struct osmo_sccp_instance *inst,
struct xua_msg *xua, uint32_t cause);
int sccp_user_prim_up(struct osmo_sccp_user *scut, struct osmo_scu_prim *prim);
/* SCU -> SCLC */
int sccp_sclc_user_sap_down(struct osmo_sccp_user *scu, struct osmo_prim_hdr *oph);
struct msgb *sccp_msgb_alloc(const char *name);
struct osmo_fsm sccp_scoc_fsm;
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