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#pragma once
#include <stdbool.h>
struct sgsn_pdp_ctx;
struct msgb;
struct gprs_ra_id;
struct RANAP_RAB_SetupOrModifiedItemIEs_s;
struct RANAP_GlobalRNC_ID;
struct ue_conn_ctx {
struct llist_head list;
struct osmo_sua_link *link;
uint32_t conn_id;
int integrity_active;
};
enum iu_event_type {
IU_EVENT_RAB_ASSIGN,
IU_EVENT_SECURITY_MODE_COMPLETE,
IU_EVENT_IU_RELEASE, /* An actual Iu Release message was received */
IU_EVENT_LINK_INVALIDATED, /* A SUA link was lost or closed down */
/* FIXME: maybe IU_EVENT_IU_RELEASE and IU_EVENT_LINK_INVALIDATED
* should be combined to one generic event that simply means the
* ue_conn_ctx should no longer be used, for whatever reason. */
};
/* Implementations of iu_recv_cb_t shall find the ue_conn_ctx in msg->dst. */
typedef int (* iu_recv_cb_t )(struct msgb *msg, struct gprs_ra_id *ra_id,
/* TODO "gprs_" in generic CS+PS domain ^ */
uint16_t *sai);
typedef int (* iu_event_cb_t )(struct ue_conn_ctx *ue_ctx,
enum iu_event_type type, void *data);
typedef int (* iu_rab_ass_resp_cb_t )(struct ue_conn_ctx *ue_ctx, uint8_t rab_id,
struct RANAP_RAB_SetupOrModifiedItemIEs_s *setup_ies);
int iu_init(void *ctx, const char *listen_addr, uint16_t listen_port,
iu_recv_cb_t iu_recv_cb, iu_event_cb_t iu_event_cb);
void iu_link_del(struct osmo_sua_link *link);
int iu_tx(struct msgb *msg, uint8_t sapi);
int iu_page_cs(const char *imsi, const uint32_t *tmsi, uint16_t lac);
int iu_page_ps(const char *imsi, const uint32_t *ptmsi, uint16_t lac, uint8_t rac);
int iu_rab_act_cs(struct ue_conn_ctx *ue_ctx, uint32_t rtp_ip, uint16_t rtp_port);
int iu_rab_act_ps(uint8_t rab_id, struct sgsn_pdp_ctx *pdp, bool use_x213_nsap);
int iu_rab_deact(struct ue_conn_ctx *ue_ctx, uint8_t rab_id);
int iu_tx_sec_mode_cmd(struct ue_conn_ctx *uectx, struct gsm_auth_tuple *tp,
int send_ck, int new_key);
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