| #pragma once |
| |
| #include <osmocom/msc/gsm_data.h> |
| #include <osmocom/msc/gsm_subscriber.h> |
| #include <osmocom/core/linuxlist.h> |
| #include <osmocom/core/fsm.h> |
| #include <osmocom/msc/gsm_04_11.h> |
| #include <osmocom/msc/mncc.h> |
| #include <osmocom/msc/msc_a.h> |
| #include <osmocom/msc/debug.h> |
| #include <osmocom/msc/codec_filter.h> |
| #include <osmocom/msc/csd_filter.h> |
| #include <osmocom/gsm/gsm0411_smc.h> |
| #include <osmocom/gsm/gsm0411_smr.h> |
| |
| struct vty; |
| |
| /* Used for late TID assignment */ |
| #define TRANS_ID_UNASSIGNED 0xff |
| |
| #define LOG_TRANS_CAT_SRC(trans, subsys, level, file, line, fmt, args...) \ |
| LOGPSRC(subsys, level, file, line, \ |
| "trans(%s %s callref-0x%x tid-%u%s) " fmt, \ |
| (trans) ? trans_name(trans) : "NULL", \ |
| (trans) ? ((trans)->msc_a ? (trans)->msc_a->c.fi->id : vlr_subscr_name((trans)->vsub)) : "NULL", \ |
| (trans) ? (trans)->callref : 0, \ |
| (trans) ? (trans)->transaction_id : 0, \ |
| (trans) && (trans)->paging_request ? ",PAGING" : "", \ |
| ##args) |
| |
| #define LOG_TRANS_CAT(trans, subsys, level, fmt, args...) \ |
| LOG_TRANS_CAT_SRC(trans, subsys, level, __FILE__, __LINE__, fmt, ##args) |
| |
| #define LOG_TRANS(trans, level, fmt, args...) \ |
| LOG_TRANS_CAT(trans, (trans) ? (trans)->log_subsys : DMSC, level, fmt, ##args) |
| |
| enum bridge_state { |
| BRIDGE_STATE_NONE, |
| BRIDGE_STATE_LOOPBACK_PENDING, |
| BRIDGE_STATE_LOOPBACK_ESTABLISHED, |
| BRIDGE_STATE_BRIDGE_PENDING, |
| BRIDGE_STATE_BRIDGE_ESTABLISHED, |
| }; |
| |
| enum trans_type { |
| TRANS_GCC = GSM48_PDISC_GROUP_CC, |
| TRANS_BCC = GSM48_PDISC_BCAST_CC, |
| TRANS_CC = GSM48_PDISC_CC, |
| TRANS_SMS = GSM48_PDISC_SMS, |
| TRANS_USSD = GSM48_PDISC_NC_SS, |
| TRANS_SILENT_CALL, |
| }; |
| |
| extern const struct value_string trans_type_names[]; |
| static inline const char *trans_type_name(enum trans_type val) |
| { return get_value_string(trans_type_names, val); } |
| |
| uint8_t trans_type_to_gsm48_proto(enum trans_type type); |
| |
| /* One transaction */ |
| struct gsm_trans { |
| /* Entry in list of all transactions */ |
| struct llist_head entry; |
| |
| /* Back pointer to the network struct */ |
| struct gsm_network *net; |
| |
| /* What kind of transaction */ |
| enum trans_type type; |
| /* Which category to log on, for LOG_TRANS(). */ |
| int log_subsys; |
| |
| /* The current transaction ID */ |
| uint8_t transaction_id; |
| |
| /* The DLCI (DCCH/ACCH + SAPI) of this transaction */ |
| uint8_t dlci; |
| |
| /* To whom we belong, unique identifier of remote MM entity */ |
| struct vlr_subscr *vsub; |
| |
| /* The associated connection we are using to transmit messages */ |
| struct msc_a *msc_a; |
| |
| /* reference from MNCC or other application */ |
| uint32_t callref; |
| |
| /* reference that may be used by MGW to identify a call */ |
| uint32_t call_id; |
| |
| /* if traffic channel receive was requested */ |
| int tch_recv; |
| |
| /* is thats one paging? */ |
| struct paging_request *paging_request; |
| |
| /* bearer capabilities (rate and codec) */ |
| struct gsm_mncc_bearer_cap bearer_cap; |
| |
| union { |
| struct { |
| /* State machine of setup process towards BSS */ |
| struct osmo_fsm_inst *fi; |
| /* BSS list with all VGCS/VBS calls */ |
| struct llist_head bss_list; |
| /* Inactivity timeout and timer */ |
| int inactivity_to; |
| struct osmo_timer_list timer_inactivity; |
| /* If talker's downlink shall be muted */ |
| bool mute_talker; |
| /* Indicator, if Uplink is used in one cell */ |
| bool uplink_busy; |
| /* BSS that uses the uplink */ |
| struct vgcs_bss *uplink_bss; |
| /* Cell that uses the uplink */ |
| struct vgcs_bss_cell *uplink_cell; |
| /* If uplink is used by the originator */ |
| bool uplink_originator; |
| } gcc; |
| struct { |
| |
| /* current call state */ |
| int state; |
| |
| /* current timer and message queue */ |
| int Tcurrent; /* current CC timer */ |
| int T308_second; /* used to send release again */ |
| struct osmo_timer_list timer; |
| struct osmo_timer_list timer_guard; |
| struct gsm_mncc msg; /* stores setup/disconnect/release message */ |
| bool mncc_initiated; /* Whether an MNCC Release is necessary on failure */ |
| struct osmo_lcls *lcls; |
| /* SDP as last received from the remote call leg. */ |
| struct sdp_msg remote; |
| /* Track codec/CSD choices from BSS and remote call leg */ |
| struct codec_filter codecs; |
| struct csd_filter csd; |
| /* Resulting choice from codecs/bearer services and the |
| * local RTP address to be sent to the remote call leg. */ |
| struct sdp_msg local; |
| } cc; |
| struct { |
| struct gsm411_smc_inst smc_inst; |
| struct gsm411_smr_inst smr_inst; |
| |
| /* SM-RP-MR, Message Reference (see GSM TS 04.11, section 8.2.3) */ |
| uint8_t sm_rp_mr; |
| /* More Messages to Send (see 3GPP TS 29.002, section 7.6.8.7) */ |
| bool sm_rp_mmts_ind; |
| |
| struct gsm_sms *sms; |
| |
| uint8_t *gsup_source_name; |
| size_t gsup_source_name_len; |
| } sms; |
| struct { |
| /** |
| * Stores a GSM 04.80 message to be sent to |
| * a subscriber after successful Paging Response |
| */ |
| struct msgb *msg; |
| /* Inactivity timer, triggers transaction release */ |
| struct osmo_timer_list timer_guard; |
| } ss; |
| struct { |
| struct gsm0808_channel_type ct; |
| struct osmo_sockaddr_str rtp_cn; |
| struct vty *from_vty; |
| } silent_call; |
| }; |
| |
| struct { |
| struct gsm_trans *peer; |
| enum bridge_state state; |
| } bridge; |
| }; |
| |
| |
| |
| struct gsm_trans *trans_find_by_type(const struct msc_a *msc_a, enum trans_type type); |
| struct gsm_trans *trans_find_by_id(const struct msc_a *msc_a, |
| enum trans_type type, uint8_t trans_id); |
| struct gsm_trans *trans_find_by_callref(const struct gsm_network *net, enum trans_type type, |
| uint32_t callref); |
| struct gsm_trans *trans_find_by_sm_rp_mr(const struct gsm_network *net, |
| const struct vlr_subscr *vsub, |
| uint8_t sm_rp_mr); |
| |
| struct osmo_lcls *trans_lcls_compose(const struct gsm_trans *trans, bool use_lac); |
| |
| struct gsm_trans *trans_alloc(struct gsm_network *net, |
| struct vlr_subscr *vsub, |
| enum trans_type type, uint8_t trans_id, |
| uint32_t callref); |
| void trans_free(struct gsm_trans *trans); |
| |
| int trans_assign_trans_id(const struct gsm_network *net, const struct vlr_subscr *vsub, |
| enum trans_type type); |
| struct gsm_trans *trans_has_conn(const struct msc_a *msc_a); |
| void trans_conn_closed(const struct msc_a *msc_a); |
| |
| static inline int trans_log_subsys(enum trans_type type) |
| { |
| switch (type) { |
| case TRANS_GCC: |
| return DGCC; |
| case TRANS_BCC: |
| return DBCC; |
| case TRANS_CC: |
| case TRANS_SILENT_CALL: |
| return DCC; |
| case TRANS_SMS: |
| return DLSMS; |
| case TRANS_USSD: |
| return DSS; |
| default: |
| break; |
| } |
| return DMSC; |
| } |
| |
| const char *trans_name(const struct gsm_trans *trans); |