From ea19c978160af32e4fee8001f5308518bcf4fd4c Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sun, 26 Jun 2011 14:47:16 +0200 Subject: import gsm0502_calc_paging_group() from openbsc --- src/gsm/Makefile.am | 2 +- src/gsm/gsm0502.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+), 1 deletion(-) create mode 100644 src/gsm/gsm0502.c (limited to 'src') diff --git a/src/gsm/Makefile.am b/src/gsm/Makefile.am index 55b772f1..74893270 100644 --- a/src/gsm/Makefile.am +++ b/src/gsm/Makefile.am @@ -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 diff --git a/src/gsm/gsm0502.c b/src/gsm/gsm0502.c new file mode 100644 index 00000000..df1d8e9e --- /dev/null +++ b/src/gsm/gsm0502.c @@ -0,0 +1,43 @@ +/* Paging helper code */ + +/* (C) 2009 by Holger Hans Peter Freyther + * 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 . + * + */ + +#include + +#include +#include +#include +#include + +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; +} -- cgit v1.2.3