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a24ebc7051
This is a preparation commit to introduce iu_rnc_fsm in follow-up patch. The helper API will be used whenever the entire RNC is considered reset. * Code inside handle_notice_ind() is moved to its own function iu_rnc_discard_all_ue_ctx(). * Dependent helper ue_ctx_link_invalidated_free() API is properly prefixed/renamed to ue_conn_ctx_link_invalidated_free(), where methods for ue_conn_ctx object are placed. * ue_conn_ctx_find() is properly prefixed/renamed to sgsn_scu_iups_ue_conn_ctx_find() and made available to functions in other files. Change-Id: Ie3a4732a85a69d115dd5756bfa64b296e9e5edd2
96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
#pragma once
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#include <stdbool.h>
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#include <osmocom/core/defs.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/iuh/common.h>
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#include <osmocom/ranap/ranap_common.h>
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#include <osmocom/ranap/vty.h>
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#include <osmocom/sigtran/sccp_sap.h>
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struct msgb;
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struct osmo_auth_vector;
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struct RANAP_RAB_SetupOrModifiedItemIEs_s;
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struct ranap_iu_rnc;
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struct ranap_ue_conn_ctx {
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struct llist_head list; /* item in sgsn_sccp->ue_conn_ctx_list */
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struct ranap_iu_rnc *rnc;
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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 ranap_nsap_addr_enc rab_assign_addr_enc;
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bool notification; /* send notification to the upstream user */
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/* if true the ue_ctx will be free on Iu release complete */
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bool free_on_release;
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/* Will be set when the Iu Release Command has been sent */
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struct osmo_timer_list release_timeout;
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};
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enum ranap_iu_event_new_area_type {
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RANAP_IU_NEW_LAC,
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RANAP_IU_NEW_RAC,
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};
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struct ranap_iu_event_new_area {
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const struct osmo_rnc_id *rnc_id;
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enum ranap_iu_event_new_area_type cell_type;
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union {
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const struct osmo_location_area_id *lai;
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const struct osmo_routing_area_id *rai;
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} u;
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};
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enum ranap_iu_event_type {
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RANAP_IU_EVENT_RAB_ASSIGN,
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RANAP_IU_EVENT_SECURITY_MODE_COMPLETE,
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RANAP_IU_EVENT_IU_RELEASE, /* An actual Iu Release message was received */
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RANAP_IU_EVENT_LINK_INVALIDATED, /* A SUA link was lost or closed down */
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RANAP_IU_EVENT_NEW_AREA, /* Either a new LAC/RAC has been detected */
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};
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extern const struct value_string iu_client_event_type_names[];
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static inline const char *iu_client_event_type_str(enum ranap_iu_event_type e)
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{
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return get_value_string(iu_client_event_type_names, e);
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}
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/* Implementations of iu_recv_cb_t shall find the ranap_ue_conn_ctx in msg->dst. */
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typedef int (*ranap_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 (*ranap_iu_event_cb_t)(struct ranap_ue_conn_ctx *ue_ctx,
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enum ranap_iu_event_type type, void *data);
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typedef int (*ranap_iu_rab_ass_resp_cb_t)(struct ranap_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 global_iu_event(struct ranap_ue_conn_ctx *ue_ctx,
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enum ranap_iu_event_type type,
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void *data);
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int ranap_iu_init(void *ctx);
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int ranap_iu_page_cs(const char *imsi, const uint32_t *tmsi, uint16_t lac)
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OSMO_DEPRECATED("Use ranap_iu_page_cs2 instead");
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int ranap_iu_page_ps(const char *imsi, const uint32_t *ptmsi, uint16_t lac, uint8_t rac)
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OSMO_DEPRECATED("Use ranap_iu_page_ps2 instead");
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int ranap_iu_page_cs2(const char *imsi, const uint32_t *tmsi, const struct osmo_location_area_id *lai);
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int ranap_iu_page_ps2(const char *imsi, const uint32_t *ptmsi, const struct osmo_routing_area_id *rai);
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struct ranap_ue_conn_ctx *ue_conn_ctx_alloc(struct ranap_iu_rnc *rnc, uint32_t conn_id);
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void ue_conn_ctx_link_invalidated_free(struct ranap_ue_conn_ctx *ue);
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/* freeing the UE will release all resources
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* This will close the SCCP connection connected to the UE */
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void sgsn_ranap_iu_free_ue(struct ranap_ue_conn_ctx *ue_ctx);
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