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libosmocore
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import gsm0502_calc_paging_group() from openbsc

This commit is contained in:
Harald Welte 2011-06-26 14:47:16 +02:00
parent 94df39e905
commit ea19c97816
4 changed files with 48 additions and 1 deletions
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3
include/osmocom/gsm/gsm0502.h
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@ -32,4 +32,7 @@ gsm0502_get_paging_group(uint64_t imsi, unsigned int bs_cc_chans,
return (imsi % 1000) % (bs_cc_chans * n_pag_blocks) % n_pag_blocks;
}
unsigned int
gsm0502_calc_paging_group(struct gsm48_control_channel_descr *chan_desc, uint64_t imsi);
#endif

1
include/osmocom/gsm/rsl.h
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@ -3,6 +3,7 @@
#include <stdint.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/msgb.h>
#include <osmocom/gsm/protocol/gsm_08_58.h>
void rsl_init_rll_hdr(struct abis_rsl_rll_hdr *dh, uint8_t msg_type);

2
src/gsm/Makefile.am
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@ -9,6 +9,6 @@ lib_LTLIBRARIES = libosmogsm.la
libosmogsm_la_SOURCES = a5.c rxlev_stat.c tlv_parser.c comp128.c gsm_utils.c \
rsl.c gsm48.c gsm48_ie.c gsm0808.c sysinfo.c \
gprs_cipher_core.c gsm0480.c abis_nm.c
gprs_cipher_core.c gsm0480.c abis_nm.c gsm0502.c
libosmogsm_la_LDFLAGS = -version-info $(LIBVERSION)
libosmogsm_la_LIBADD = $(top_builddir)/src/libosmocore.la

43
src/gsm/gsm0502.c Normal file
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@ -0,0 +1,43 @@
/* Paging helper code */
/* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdint.h>
#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <osmocom/gsm/gsm0502.h>
#include <osmocom/gsm/gsm48.h>
#include <osmocom/gsm/rsl.h>
unsigned int
gsm0502_calc_paging_group(struct gsm48_control_channel_descr *chan_desc, uint64_t imsi)
{
int ccch_conf;
int bs_cc_chans;
int blocks;
unsigned int group;
ccch_conf = chan_desc->ccch_conf;
bs_cc_chans = rsl_ccch_conf_to_bs_cc_chans(ccch_conf);
/* code word + 2, as 2 channels equals 0x0 */
blocks = gsm48_number_of_paging_subchannels(chan_desc);
group = gsm0502_get_paging_group(imsi, bs_cc_chans, blocks);
return group;
}