78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
#pragma once
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#include <stdbool.h>
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#include <stdint.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/gsm/gsm48.h>
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#include <osmocom/sigtran/sccp_sap.h>
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#include <openbsc/common.h>
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struct sgsn_pdp_ctx;
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struct msgb;
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struct gsm_auth_tuple;
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struct osmo_sccp_addr;
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struct osmo_ss7_instance;
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struct RANAP_RAB_SetupOrModifiedItemIEs_s;
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struct RANAP_GlobalRNC_ID;
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struct RANAP_Cause;
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/* Debugging switches from asn1c and osmo-iuh */
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extern int asn_debug;
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extern int asn1_xer_print;
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struct ue_conn_ctx {
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struct llist_head list;
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/* TODO: It's not needed to store the full SCCP address for each
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* UE. Rather than that, a pointer to the RNC should be far
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* sufficient */
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struct osmo_sccp_addr sccp_addr;
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uint32_t conn_id;
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int integrity_active;
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struct gprs_ra_id ra_id;
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enum nsap_addr_enc rab_assign_addr_enc;
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};
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enum iu_event_type {
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IU_EVENT_RAB_ASSIGN,
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IU_EVENT_SECURITY_MODE_COMPLETE,
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IU_EVENT_IU_RELEASE, /* An actual Iu Release message was received */
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IU_EVENT_LINK_INVALIDATED, /* A SUA link was lost or closed down */
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};
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extern const struct value_string iu_event_type_names[];
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static inline const char *iu_event_type_str(enum iu_event_type e)
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{
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return get_value_string(iu_event_type_names, e);
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}
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/* Implementations of iu_recv_cb_t shall find the ue_conn_ctx in msg->dst. */
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typedef int (* iu_recv_cb_t )(struct msgb *msg, struct gprs_ra_id *ra_id,
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uint16_t *sai);
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typedef int (* iu_event_cb_t )(struct ue_conn_ctx *ue_ctx,
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enum iu_event_type type, void *data);
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typedef int (* iu_rab_ass_resp_cb_t )(struct ue_conn_ctx *ue_ctx, uint8_t rab_id,
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struct RANAP_RAB_SetupOrModifiedItemIEs_s *setup_ies);
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int iu_init(void *ctx, struct osmo_sccp_instance *sccp,
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iu_recv_cb_t iu_recv_cb, iu_event_cb_t iu_event_cb);
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int iu_tx(struct msgb *msg, uint8_t sapi);
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int iu_page_cs(const char *imsi, const uint32_t *tmsi, uint16_t lac);
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int iu_page_ps(const char *imsi, const uint32_t *ptmsi, uint16_t lac, uint8_t rac);
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int iu_rab_act(struct ue_conn_ctx *ue_ctx, struct msgb *msg);
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int iu_rab_deact(struct ue_conn_ctx *ue_ctx, uint8_t rab_id);
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int iu_tx_sec_mode_cmd(struct ue_conn_ctx *uectx, struct gsm_auth_tuple *tp,
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int send_ck, int new_key);
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int iu_tx_common_id(struct ue_conn_ctx *ue_ctx, const char *imsi);
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int iu_tx_release(struct ue_conn_ctx *ctx, const struct RANAP_Cause *cause);
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void iu_vty_init(int iu_parent_node, enum nsap_addr_enc *rab_assign_addr_enc);
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int iu_vty_config_write(struct vty *vty, const char *indent);
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