#pragma once

/* Internal header used by libosmo-sccp, not available publicly for lib users */

#include <stdbool.h>
#include <stdint.h>

#include <osmocom/core/linuxlist.h>
#include <osmocom/netif/stream.h>
#include <osmocom/sigtran/osmo_ss7.h>

#include "ss7_instance.h"

#define MAX_PC_STR_LEN 32

extern bool ss7_initialized;

bool ss7_ipv6_sctp_supported(const char *host, bool bind);

uint32_t ss7_pc_full_mask(const struct osmo_ss7_pc_fmt *pc_fmt);

struct osmo_ss7_asp *ss7_asp_find_by_socket_addr(int fd, int trans_proto);

bool ss7_asp_protocol_check_trans_proto(enum osmo_ss7_asp_protocol proto, int trans_proto);
int ss7_default_trans_proto_for_asp_proto(enum osmo_ss7_asp_protocol proto);
int ss7_asp_ipa_srv_conn_rx_cb(struct osmo_stream_srv *conn, int res, struct msgb *msg);
int ss7_asp_xua_srv_conn_rx_cb(struct osmo_stream_srv *conn, int res, struct msgb *msg);
int ss7_asp_m3ua_tcp_srv_conn_rx_cb(struct osmo_stream_srv *conn, int res, struct msgb *msg);
int ss7_asp_xua_srv_conn_closed_cb(struct osmo_stream_srv *srv);

int xua_tcp_segmentation_cb(struct msgb *msg);

static inline struct llist_head *_ss7_llist_round_robin(struct llist_head *list, void **state)
{
	struct llist_head *e = *state;
	if (!e || e->next == list)
		e = list;
	e = e->next;
	if (e == list)
		e = NULL;
	*state = e;
	return e;
}
#define ss7_llist_round_robin(list, state, struct_type, entry_name) \
	llist_entry(_ss7_llist_round_robin(list, state), struct_type, entry_name)

/*! \brief load a 24bit value as big-endian */
static inline uint32_t load_24be(const void *ptr)
{
	const uint8_t *data = ptr;
	return (data[0] << 16) | (data[1] << 8) | data[2];
}

/* VTY */
#define XUA_VAR_STR	"(sua|m3ua|ipa)"