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Code Issues Releases Wiki Activity

add new rsl_dec_chan_nr() function

This commit is contained in:
Harald Welte 2010-03-04 14:27:48 +01:00
parent 61e2bfc5f4
commit ecf9dd0d96
2 changed files with 36 additions and 0 deletions
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2
include/osmocore/rsl.h
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@ -13,6 +13,8 @@ extern const struct tlv_definition rsl_att_tlvdef;
/* encode channel number as per Section 9.3.1 */
uint8_t rsl_enc_chan_nr(uint8_t type, uint8_t subch, uint8_t timeslot);
/* decode channel number as per Section 9.3.1 */
int rsl_dec_chan_nr(uint8_t chan_nr, uint8_t *type, uint8_t *subch, uint8_t *timeslot);
const struct value_string rsl_rlm_cause_strs[];

34
src/rsl.c
View File

@ -21,6 +21,9 @@
*
*/
#include <stdint.h>
#include <errno.h>
#include <osmocore/tlv.h>
#include <osmocore/rsl.h>
@ -142,6 +145,37 @@ uint8_t rsl_enc_chan_nr(uint8_t type, uint8_t subch, uint8_t timeslot)
return ret;
}
int rsl_dec_chan_nr(uint8_t chan_nr, uint8_t *type, uint8_t *subch, uint8_t *timeslot)
{
*timeslot = chan_nr & 0x7;
if ((chan_nr & 0xf8) == RSL_CHAN_Bm_ACCHs) {
*type = RSL_CHAN_Bm_ACCHs;
*subch = 0;
} else if ((chan_nr & 0xf0) == RSL_CHAN_Lm_ACCHs) {
*type = RSL_CHAN_Lm_ACCHs;
*subch = (chan_nr >> 3) & 0x1;
} else if ((chan_nr & 0xe0) == RSL_CHAN_SDCCH4_ACCH) {
*type = RSL_CHAN_SDCCH4_ACCH;
*subch = (chan_nr >> 3) & 0x3;
} else if ((chan_nr & 0xc0) == RSL_CHAN_SDCCH8_ACCH) {
*type = RSL_CHAN_SDCCH8_ACCH;
*subch = (chan_nr >> 3) & 0x7;
} else if (chan_nr == 0x10) {
*type = RSL_CHAN_BCCH;
*subch = 0;
} else if (chan_nr == 0x11) {
*type = RSL_CHAN_RACH;
*subch = 0;
} else if (chan_nr == 0x12) {
*type = RSL_CHAN_PCH_AGCH;
*subch = 0;
} else
return -EINVAL;
return 0;
}
/* FIXME: convert to value_string */
static const char *rsl_err_vals[0xff] = {
[RSL_ERR_RADIO_IF_FAIL] = "Radio Interface Failure",