179 lines
4.7 KiB
C
179 lines
4.7 KiB
C
#ifndef _GSM48_RR_H
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#define _GSM48_RR_H
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#include "osmocore/protocol/gsm_04_08.h"
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#define GSM_TA_CM 55385
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/* GSM 04.07 9.1.2 */
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#define GSM48_RR_EST_REQ 0x10
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#define GSM48_RR_EST_IND 0x12
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#define GSM48_RR_EST_CNF 0x11
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#define GSM48_RR_REL_IND 0x22
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#define GSM48_RR_SYNC_IND 0x32
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#define GSM48_RR_DATA_REQ 0x40
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#define GSM48_RR_DATA_IND 0x42
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#define GSM48_RR_UNIT_DATA_IND 0x52
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#define GSM48_RR_ABORT_REQ 0x60
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#define GSM48_RR_ABORT_IND 0x62
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#define GSM48_RR_ACT_REQ 0x70
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#define RR_EST_CAUSE_EMERGENCY 1
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#define RR_EST_CAUSE_REESTAB_TCH_F 2
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#define RR_EST_CAUSE_REESTAB_TCH_H 3
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#define RR_EST_CAUSE_REESTAB_2_TCH_H 4
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#define RR_EST_CAUSE_ANS_PAG_ANY 5
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#define RR_EST_CAUSE_ANS_PAG_SDCCH 6
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#define RR_EST_CAUSE_ANS_PAG_TCH_F 7
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#define RR_EST_CAUSE_ANS_PAG_TCH_ANY 8
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#define RR_EST_CAUSE_ORIG_TCHF 9
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#define RR_EST_CAUSE_LOC_UPD 12
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#define RR_EST_CAUSE_OTHER_SDCCH 13
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#define RR_REL_CAUSE_UNDEFINED 0
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#define RR_REL_CAUSE_NORMAL 1
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#define RR_REL_CAUSE_NOT_AUTHORIZED 2
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#define RR_REL_CAUSE_RA_FAILURE 3
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#define RR_REL_CAUSE_T3122 4
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#define RR_REL_CAUSE_TRY_LATER 5
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#define RR_REL_CAUSE_EMERGENCY_ONLY 6
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#define RR_REL_CAUSE_LOST_SIGNAL 7
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#define L3_ALLOC_SIZE 256
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#define L3_ALLOC_HEADROOM 64
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#define RSL_ALLOC_SIZE 256
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#define RSL_ALLOC_HEADROOM 64
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#define RR_ALLOC_SIZE 256
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#define RR_ALLOC_HEADROOM 64
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/* GSM 04.08 RR-SAP header */
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struct gsm48_rr_hdr {
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uint32_t msg_type; /* RR-* primitive */
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uint8_t cause;
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};
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/* GSM 04.07 9.1.1 */
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#define GSM48_RR_ST_IDLE 0
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#define GSM48_RR_ST_CONN_PEND 1
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#define GSM48_RR_ST_DEDICATED 2
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#define GSM48_RR_ST_REL_PEND 3
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/* channel description */
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struct gsm48_rr_cd {
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uint8_t tsc;
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uint8_t h; /* using hopping */
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uint16_t arfcn; /* dedicated mode */
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uint8_t maio;
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uint8_t hsn;
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uint8_t chan_nr; /* type, slot, sub slot */
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uint8_t link_id;
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uint8_t ta; /* timing advance */
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uint8_t mob_alloc_lv[9]; /* len + up to 64 bits */
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uint8_t start_t1, start_t2, start_t3; /* start. time */
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};
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/* measurements */
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struct gsm48_rr_meas {
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uint8_t rxlev_full;
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uint8_t rxlev_sub;
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uint8_t rxqual_full;
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uint8_t rxqual_sub;
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uint8_t dtx;
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uint8_t ba;
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uint8_t meas_valid;
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uint8_t ncell_na;
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uint8_t count;
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uint8_t rxlev_nc[6];
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uint8_t bsic_nc[6];
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uint8_t bcch_f_nc[6];
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};
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struct gsm48_cr_hist {
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uint8_t valid;
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struct gsm48_req_ref ref;
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};
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/* RR sublayer instance */
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struct gsm48_rrlayer {
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struct osmocom_ms *ms;
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int state;
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/* queue for RSL-SAP message upwards */
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struct llist_head rsl_upqueue;
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/* queue for messages while RR connection is built up */
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struct llist_head downqueue;
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/* timers */
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struct timer_list t_rel_wait; /* wait for L2 to transmit UA */
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struct timer_list t3110;
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struct timer_list t3122;
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struct timer_list t3124;
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struct timer_list t3126;
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int t3126_value;
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#ifndef TODO
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struct timer_list temp_rach_ti; /* temporary timer */
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#endif
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/* states if RR-EST-REQ was used */
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uint8_t rr_est_req;
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struct msgb *rr_est_msg;
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/* channel request states */
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uint8_t wait_assign; /* waiting for assignment state */
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uint8_t n_chan_req; /* number left, incl. current */
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uint8_t chan_req_val; /* current request value */
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uint8_t chan_req_mask; /* mask of random bits */
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/* cr_hist */
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uint8_t cr_ra; /* stores requested ra until confirmed */
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struct gsm48_cr_hist cr_hist[3];
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/* current channel descriptions */
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struct gsm48_rr_cd cd_now;
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/* current cipering */
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uint8_t cipher_on;
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uint8_t cipher_type; /* 10.5.2.9 */
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/* special states when changing channel */
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uint8_t hando_susp_state;
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uint8_t assign_susp_state;
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uint8_t resume_last_state;
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struct gsm48_rr_cd cd_last;
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/* measurements */
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struct gsm48_rr_meas meas;
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uint8_t ind_tx_power; /* last indicated power */
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uint8_t ind_ta; /* last indicated ta */
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/* BA range */
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uint8_t ba_ranges;
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uint32_t ba_range[16];
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/* monitor */
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uint8_t monitor;
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struct timer_list t_monitor;
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};
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const char *get_rr_name(int value);
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extern int gsm48_rr_init(struct osmocom_ms *ms);
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extern int gsm48_rr_exit(struct osmocom_ms *ms);
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int gsm48_rsl_dequeue(struct osmocom_ms *ms);
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int gsm48_rr_downmsg(struct osmocom_ms *ms, struct msgb *msg);
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struct msgb *gsm48_l3_msgb_alloc(void);
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struct msgb *gsm48_rr_msgb_alloc(int msg_type);
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int gsm48_decode_lai(struct gsm48_loc_area_id *lai, uint16_t *mcc,
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uint16_t *mnc, uint16_t *lac);
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int gsm48_rr_enc_cm2(struct osmocom_ms *ms, struct gsm48_classmark2 *cm);
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int gsm48_rr_tx_rand_acc(struct osmocom_ms *ms, struct msgb *msg);
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int gsm48_rr_los(struct osmocom_ms *ms);
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int gsm48_rr_rach_conf(struct osmocom_ms *ms, uint32_t fn);
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extern const char *gsm48_rr_state_names[];
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int gsm48_rr_start_monitor(struct osmocom_ms *ms);
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int gsm48_rr_stop_monitor(struct osmocom_ms *ms);
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#endif /* _GSM48_RR_H */
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