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#pragma once
#include <stdbool.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/gsm/gsm48.h>
#include <osmocom/sigtran/sccp_sap.h>
struct msgb;
struct osmo_auth_vector;
struct RANAP_RAB_SetupOrModifiedItemIEs_s;
struct RANAP_Cause;
struct ranap_iu_rnc;
/* Debugging switches from asn1c and osmo-iuh */
extern int asn_debug;
extern int asn1_xer_print;
enum ranap_nsap_addr_enc {
RANAP_NSAP_ADDR_ENC_X213,
RANAP_NSAP_ADDR_ENC_V4RAW,
};
struct ranap_ue_conn_ctx {
struct llist_head list;
struct ranap_iu_rnc *rnc;
uint32_t conn_id;
int integrity_active;
struct gprs_ra_id ra_id;
enum ranap_nsap_addr_enc rab_assign_addr_enc;
bool notification; /* send notification to the upstream user */
/* if true the ue_ctx will be free on Iu release complete */
bool free_on_release;
/* Will be set when the Iu Release Command has been sent */
struct osmo_timer_list release_timeout;
};
enum ranap_iu_event_type {
RANAP_IU_EVENT_RAB_ASSIGN,
RANAP_IU_EVENT_SECURITY_MODE_COMPLETE,
RANAP_IU_EVENT_IU_RELEASE, /* An actual Iu Release message was received */
RANAP_IU_EVENT_LINK_INVALIDATED, /* A SUA link was lost or closed down */
};
extern const struct value_string ranap_iu_event_type_names[];
static inline const char *ranap_iu_event_type_str(enum ranap_iu_event_type e)
{
return get_value_string(ranap_iu_event_type_names, e);
}
/* Implementations of iu_recv_cb_t shall find the ranap_ue_conn_ctx in msg->dst. */
typedef int (* ranap_iu_recv_cb_t )(struct msgb *msg, struct gprs_ra_id *ra_id,
uint16_t *sai);
typedef int (* ranap_iu_event_cb_t )(struct ranap_ue_conn_ctx *ue_ctx,
enum ranap_iu_event_type type, void *data);
typedef int (* ranap_iu_rab_ass_resp_cb_t )(struct ranap_ue_conn_ctx *ue_ctx, uint8_t rab_id,
struct RANAP_RAB_SetupOrModifiedItemIEs_s *setup_ies);
int ranap_iu_init(void *ctx, int log_subsystem, const char *sccp_user_name, struct osmo_sccp_instance *sccp,
ranap_iu_recv_cb_t iu_recv_cb, ranap_iu_event_cb_t iu_event_cb);
int ranap_iu_tx(struct msgb *msg, uint8_t sapi);
int ranap_iu_page_cs(const char *imsi, const uint32_t *tmsi, uint16_t lac);
int ranap_iu_page_ps(const char *imsi, const uint32_t *ptmsi, uint16_t lac, uint8_t rac);
int ranap_iu_rab_act(struct ranap_ue_conn_ctx *ue_ctx, struct msgb *msg);
int ranap_iu_rab_deact(struct ranap_ue_conn_ctx *ue_ctx, uint8_t rab_id);
int ranap_iu_tx_sec_mode_cmd(struct ranap_ue_conn_ctx *uectx, struct osmo_auth_vector *vec,
int send_ck, int new_key);
int ranap_iu_tx_common_id(struct ranap_ue_conn_ctx *ue_ctx, const char *imsi);
int ranap_iu_tx_release(struct ranap_ue_conn_ctx *ctx, const struct RANAP_Cause *cause);
/* Transmit a Iu Release Command and submit event RANAP_IU_EVENT_IU_RELEASE upon
* Release Complete or timeout. Caller is responsible to free the context and
* closing the SCCP connection (ranap_iu_free_ue) upon recieval of the event. */
void ranap_iu_tx_release_free(struct ranap_ue_conn_ctx *ctx,
const struct RANAP_Cause *cause,
int timeout);
/* freeing the UE will release all resources
* This will close the SCCP connection connected to the UE */
void ranap_iu_free_ue(struct ranap_ue_conn_ctx *ue_ctx);
void ranap_iu_vty_init(int iu_parent_node, enum ranap_nsap_addr_enc *rab_assign_addr_enc);
int ranap_iu_vty_config_write(struct vty *vty, const char *indent);
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