125 lines
4.8 KiB
C
125 lines
4.8 KiB
C
/* Routines for the MSC handling */
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#ifndef OSMO_MSC_H
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#define OSMO_MSC_H
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#include <osmocom/core/fsm.h>
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#include <osmocom/gsm/gsup.h>
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#include <osmocom/msc/gsm_data.h>
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#define MSC_HLR_REMOTE_IP_DEFAULT "127.0.0.1"
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#define MSC_HLR_REMOTE_PORT_DEFAULT OSMO_GSUP_PORT
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enum subscr_conn_fsm_event {
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/* Mark 0 as invalid to catch uninitialized vars */
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SUBSCR_CONN_E_INVALID = 0,
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/* Accepted the initial Complete Layer 3 (starting to evaluate Authentication and Ciphering) */
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SUBSCR_CONN_E_COMPLETE_LAYER_3,
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/* Received Classmark Update, typically neede for Ciphering Mode Command */
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SUBSCR_CONN_E_CLASSMARK_UPDATE,
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/* LU or Process Access FSM has determined that this conn is good */
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SUBSCR_CONN_E_ACCEPTED,
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/* received first reply from MS in "real" CC, SMS, USSD communication */
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SUBSCR_CONN_E_COMMUNICATING,
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/* Some async action has completed, check again whether all is done */
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SUBSCR_CONN_E_RELEASE_WHEN_UNUSED,
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/* MS/BTS/BSC originated close request */
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SUBSCR_CONN_E_MO_CLOSE,
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/* MSC originated close request, e.g. failed authentication */
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SUBSCR_CONN_E_CN_CLOSE,
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/* The usage count for the conn has reached zero */
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SUBSCR_CONN_E_UNUSED,
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};
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enum subscr_conn_fsm_state {
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SUBSCR_CONN_S_NEW,
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SUBSCR_CONN_S_AUTH_CIPH,
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SUBSCR_CONN_S_WAIT_CLASSMARK_UPDATE,
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SUBSCR_CONN_S_ACCEPTED,
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SUBSCR_CONN_S_COMMUNICATING,
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SUBSCR_CONN_S_RELEASING,
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SUBSCR_CONN_S_RELEASED,
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};
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enum msc_compl_l3_rc {
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MSC_CONN_ACCEPT = 0,
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MSC_CONN_REJECT = 1,
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};
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struct gsm_subscriber_connection *msc_subscr_conn_alloc(struct gsm_network *network,
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enum ran_type via_ran, uint16_t lac);
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void msc_subscr_conn_update_id(struct gsm_subscriber_connection *conn,
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enum complete_layer3_type from, const char *id);
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char *msc_subscr_conn_get_conn_id(struct gsm_subscriber_connection *conn);
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void msc_subscr_conn_complete_layer_3(struct gsm_subscriber_connection *conn);
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int msc_vlr_alloc(struct gsm_network *net);
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int msc_vlr_start(struct gsm_network *net);
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void msc_sapi_n_reject(struct gsm_subscriber_connection *conn, int dlci);
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int msc_clear_request(struct gsm_subscriber_connection *conn, uint32_t cause);
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int msc_compl_l3(struct gsm_subscriber_connection *conn,
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struct msgb *msg, uint16_t chosen_channel);
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void msc_dtap(struct gsm_subscriber_connection *conn, struct msgb *msg);
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int msc_classmark_request_then_cipher_mode_cmd(struct gsm_subscriber_connection *conn, bool umts_aka,
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bool retrieve_imeisv);
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int msc_geran_set_cipher_mode(struct gsm_subscriber_connection *conn, bool umts_aka, bool retrieve_imeisv);
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void msc_cipher_mode_compl(struct gsm_subscriber_connection *conn,
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struct msgb *msg, uint8_t alg_id);
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void msc_rx_sec_mode_compl(struct gsm_subscriber_connection *conn);
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void msc_classmark_chg(struct gsm_subscriber_connection *conn,
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const uint8_t *cm2, uint8_t cm2_len,
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const uint8_t *cm3, uint8_t cm3_len);
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void msc_assign_fail(struct gsm_subscriber_connection *conn,
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uint8_t cause, uint8_t *rr_cause);
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void msc_subscr_conn_init(void);
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bool msc_subscr_conn_is_accepted(const struct gsm_subscriber_connection *conn);
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bool msc_subscr_conn_is_establishing_auth_ciph(const struct gsm_subscriber_connection *conn);
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void msc_subscr_conn_communicating(struct gsm_subscriber_connection *conn);
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void msc_subscr_conn_close(struct gsm_subscriber_connection *conn,
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uint32_t cause);
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void msc_subscr_conn_mo_close(struct gsm_subscriber_connection *conn, uint32_t cause);
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bool msc_subscr_conn_in_release(struct gsm_subscriber_connection *conn);
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void msc_subscr_conn_rx_bssmap_clear_complete(struct gsm_subscriber_connection *conn);
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void msc_subscr_conn_rx_iu_release_complete(struct gsm_subscriber_connection *conn);
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enum msc_subscr_conn_use {
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MSC_CONN_USE_UNTRACKED = -1,
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MSC_CONN_USE_COMPL_L3,
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MSC_CONN_USE_DTAP,
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MSC_CONN_USE_AUTH_CIPH,
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MSC_CONN_USE_CM_SERVICE,
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MSC_CONN_USE_TRANS_CC,
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MSC_CONN_USE_TRANS_SMS,
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MSC_CONN_USE_TRANS_NC_SS,
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MSC_CONN_USE_SILENT_CALL,
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MSC_CONN_USE_RELEASE,
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};
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extern const struct value_string msc_subscr_conn_use_names[];
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static inline const char *msc_subscr_conn_use_name(enum msc_subscr_conn_use val)
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{ return get_value_string(msc_subscr_conn_use_names, val); }
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#define msc_subscr_conn_get(conn, balance_token) \
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_msc_subscr_conn_get(conn, balance_token, __FILE__, __LINE__)
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#define msc_subscr_conn_put(conn, balance_token) \
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_msc_subscr_conn_put(conn, balance_token, __FILE__, __LINE__)
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struct gsm_subscriber_connection *
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_msc_subscr_conn_get(struct gsm_subscriber_connection *conn,
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enum msc_subscr_conn_use balance_token,
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const char *file, int line);
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void _msc_subscr_conn_put(struct gsm_subscriber_connection *conn,
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enum msc_subscr_conn_use balance_token,
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const char *file, int line);
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bool msc_subscr_conn_used_by(struct gsm_subscriber_connection *conn,
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enum msc_subscr_conn_use token);
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void msc_stop_paging(struct vlr_subscr *vsub);
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#endif
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