108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
#ifndef OSMO_BTS_PAGING_H
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#define OSMO_BTS_PAGING_H
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#include <stdint.h>
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/gsm/protocol/gsm_04_08.h>
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struct paging_state;
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struct gsm_bts;
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struct asci_notification;
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/* abstract representation of P1 rest octets; we only implement those parts we need for now */
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struct p1_rest_octets {
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struct {
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bool present;
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uint8_t nln;
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uint8_t nln_status;
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} nln_pch;
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bool packet_page_ind[2];
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bool r8_present;
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struct {
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bool prio_ul_access;
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bool etws_present;
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struct {
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bool is_first;
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uint8_t page_nr;
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const uint8_t *page;
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size_t page_bytes;
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} etws;
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} r8;
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};
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/* abstract representation of P2 rest octets; we only implement those parts we need for now */
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struct p2_rest_octets {
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struct {
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bool present;
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uint8_t cn3;
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} cneed;
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struct {
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bool present;
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uint8_t nln;
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uint8_t nln_status;
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} nln_pch;
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};
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/* abstract representation of P3 rest octets; we only implement those parts we need for now */
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struct p3_rest_octets {
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struct {
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bool present;
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uint8_t cn3;
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uint8_t cn4;
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} cneed;
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struct {
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bool present;
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uint8_t nln;
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uint8_t nln_status;
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} nln_pch;
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};
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/* initialize paging code */
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struct paging_state *paging_init(struct gsm_bts *bts,
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unsigned int num_paging_max,
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unsigned int paging_lifetime);
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/* (re) configure paging code */
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void paging_config(struct paging_state *ps,
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unsigned int num_paging_max,
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unsigned int paging_lifetime);
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void paging_reset(struct paging_state *ps);
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/* The max number of paging entries */
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unsigned int paging_get_queue_max(struct paging_state *ps);
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void paging_set_queue_max(struct paging_state *ps, unsigned int queue_max);
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/* The lifetime of a paging entry */
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unsigned int paging_get_lifetime(struct paging_state *ps);
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void paging_set_lifetime(struct paging_state *ps, unsigned int lifetime);
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/* update with new SYSTEM INFORMATION parameters */
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int paging_si_update(struct paging_state *ps, struct gsm48_control_channel_descr *chan_desc);
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/* Add an identity to the paging queue */
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int paging_add_identity(struct paging_state *ps, uint8_t paging_group,
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const uint8_t *identity_lv, uint8_t chan_needed);
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/* Add a ready formatted MAC block message to the paging queue, this can be an IMMEDIATE ASSIGNMENT, or a
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* PAGING COMMAND (from the PCU) */
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int paging_add_macblock(struct paging_state *ps, uint32_t msg_id, const char *imsi, bool confirm, const uint8_t *macblock);
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/* Paging rest octests */
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void append_p1_rest_octets(struct bitvec *bv, const struct p1_rest_octets *p1ro,
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const struct asci_notification *notif);
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void append_p2_rest_octets(struct bitvec *bv, const struct p2_rest_octets *p2ro);
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void append_p3_rest_octets(struct bitvec *bv, const struct p3_rest_octets *p3ro);
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/* generate paging message for given gsm time */
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int paging_gen_msg(struct paging_state *ps, uint8_t *out_buf, struct gsm_time *gt,
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int *is_empty);
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/* inspection methods below */
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int paging_group_queue_empty(struct paging_state *ps, uint8_t group);
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int paging_queue_length(struct paging_state *ps);
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int paging_buffer_space(struct paging_state *ps);
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#endif
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