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#pragma once
#include <osmocom/core/msgb.h>
#include <openbsc/gsm_data.h>
/* This callback structure allows linking specific components without having to
* include entire infrastructures of external libraries. For example, a unit
* test does not need to link against external ASN1 libraries if it is never
* going to encode actual outgoing messages. It is up to each building scope to
* plug meaningful sending/receiving callback functions, or to have mere dummy
* implementations. */
struct msc_api {
struct {
/* libmsc calls this to send out messages to an A-interface */
int (*tx)(struct msgb *msg, uint8_t sapi);
} a;
struct {
/* libmsc calls this to send out messages to an Iu-interface */
int (*tx)(struct msgb *msg, uint8_t sapi);
} iu;
};
/* TODO does this belong to openbsc/gsm_04_08.h ?? */
int msc_compl_l3(struct gsm_subscriber_connection *conn, struct msgb *msg,
uint16_t chosen_channel);
/* Depending on conn->via_iface (A or IuCS), submit msg to the proper link api. */
extern int msc_submit_dtap(struct gsm_subscriber_connection *conn,
struct msgb *msg);
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