#pragma once #include #include #include #include #include #include #include #include #include #include #include #include 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; bool gsup_rsp_pending; } 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);