#pragma once #include struct msc_a; struct vlr_subscr; struct gsm_trans; /* Modeled after the RANAP PagingCause; translates to enum sgsap_service_ind and BSSMAP Channel Needed (3GPP TS 48.008 * 3.2.2.36) by collapsing e.g. all call related paging causes to SGSAP_SERV_IND_CS_CALL, etc. */ enum paging_cause { PAGING_CAUSE_CALL_CONVERSATIONAL = 0, PAGING_CAUSE_CALL_STREAMING, PAGING_CAUSE_CALL_INTERACTIVE, PAGING_CAUSE_CALL_BACKGROUND, PAGING_CAUSE_SIGNALLING_LOW_PRIO, PAGING_CAUSE_SIGNALLING_HIGH_PRIO, PAGING_CAUSE_UNSPECIFIED, }; extern const struct value_string paging_cause_names[]; static inline const char *paging_cause_name(enum paging_cause val) { return get_value_string(paging_cause_names, val); } /* A successful Paging will pass a valid msc_a, an expired paging will pass msc_a == NULL. */ typedef void (* paging_cb_t )(struct msc_a *msc_a, struct gsm_trans *trans); struct paging_request { struct llist_head entry; /* human readable label to be able to log pending request kinds */ const char *label; enum paging_cause cause; /* the callback data */ paging_cb_t paging_cb; struct gsm_trans *trans; }; struct paging_request *paging_request_start(struct vlr_subscr *vsub, enum paging_cause cause, paging_cb_t paging_cb, struct gsm_trans *trans, const char *label); void paging_request_join_vsub(struct vlr_subscr *keep_vsub, struct vlr_subscr *discarding_vsub); void paging_request_remove(struct paging_request *pr); void paging_response(struct msc_a *msc_a); void paging_expired(struct vlr_subscr *vsub);