mirror of https://gerrit.osmocom.org/libosmocore
port arfcn range encode support from osmo-bsc
As part of fixing issue OS#3075, we want to migrate support for encoding system information from osmo-bsc to libosmocore. This change ports one of the prerequisites for doing so: osmo-bsc code for range-encoding ARFCNs, including tests. An osmo_gsm48_ prefix has been prepended to public symbols in order to avoid clashes with existing symbols in osmo-bsc code. Change-Id: Ia220764fba451be5e975ae7c5eefb1a25ac2bf2c Related: OS#3075
This commit is contained in:
Stefan Sperling
parent
e118ed22e3
commit
fdf8b7b1be
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@ -91,6 +91,7 @@ nobase_include_HEADERS = \
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osmocom/gsm/gsm23003.h \
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osmocom/gsm/gsm29118.h \
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osmocom/gsm/gsm48.h \
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osmocom/gsm/gsm48_arfcn_range_encode.h \
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osmocom/gsm/gsm48_ie.h \
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osmocom/gsm/gsm_utils.h \
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osmocom/gsm/gsup.h \
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@ -0,0 +1,25 @@
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/*! \file gsm48_arfcn_range_encode.h */
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#pragma once
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#include <stdint.h>
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enum osmo_gsm48_range {
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OSMO_GSM48_ARFCN_RANGE_INVALID = -1,
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OSMO_GSM48_ARFCN_RANGE_128 = 127,
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OSMO_GSM48_ARFCN_RANGE_256 = 255,
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OSMO_GSM48_ARFCN_RANGE_512 = 511,
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OSMO_GSM48_ARFCN_RANGE_1024 = 1023,
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};
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#define OSMO_GSM48_RANGE_ENC_MAX_ARFCNS 29
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int osmo_gsm48_range_enc_determine_range(const int *arfcns, int size, int *f0_out);
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int osmo_gsm48_range_enc_arfcns(enum osmo_gsm48_range rng, const int *arfcns, int sze, int *out, int idx);
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int osmo_gsm48_range_enc_find_index(enum osmo_gsm48_range rng, const int *arfcns, int size);
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int osmo_gsm48_range_enc_filter_arfcns(int *arfcns, const int sze, const int f0, int *f0_included);
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int osmo_gsm48_range_enc_128(uint8_t *chan_list, int f0, int *w);
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int osmo_gsm48_range_enc_256(uint8_t *chan_list, int f0, int *w);
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int osmo_gsm48_range_enc_512(uint8_t *chan_list, int f0, int *w);
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int osmo_gsm48_range_enc_1024(uint8_t *chan_list, int f0, int f0_incl, int *w);
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@ -21,7 +21,8 @@ lib_LTLIBRARIES = libosmogsm.la
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BUILT_SOURCES = gsm0503_conv.c
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libgsmint_la_SOURCES = a5.c rxlev_stat.c tlv_parser.c comp128.c comp128v23.c \
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gsm_utils.c rsl.c gsm48.c gsm48_ie.c gsm0808.c sysinfo.c \
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gsm_utils.c rsl.c gsm48.c gsm48_arfcn_range_encode.c \
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gsm48_ie.c gsm0808.c sysinfo.c \
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gprs_cipher_core.c gprs_rlc.c gsm0480.c abis_nm.c gsm0502.c \
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gsm0411_utils.c gsm0411_smc.c gsm0411_smr.c gsm0414.c \
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lapd_core.c lapdm.c kasumi.c gsm29205.c gsm_04_08_gprs.c \
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@ -0,0 +1,321 @@
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/* gsm 04.08 system information (si) encoding and decoding
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* 3gpp ts 04.08 version 7.21.0 release 1998 / etsi ts 100 940 v7.21.0 */
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/*
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* (C) 2012 Holger Hans Peter Freyther
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* (C) 2012 by On-Waves
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <osmocom/gsm/protocol/gsm_04_08.h>
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#include <osmocom/gsm/gsm48_arfcn_range_encode.h>
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#include <osmocom/core/utils.h>
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#include <errno.h>
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static inline int greatest_power_of_2_lesser_or_equal_to(int index)
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{
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int power_of_2 = 1;
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do {
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power_of_2 *= 2;
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} while (power_of_2 <= index);
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/* now go back one step */
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return power_of_2 / 2;
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}
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static inline int mod(int data, int range)
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{
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int res = data % range;
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while (res < 0)
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res += range;
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return res;
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}
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/**
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* Determine at which index to split the ARFCNs to create an
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* equally size partition for the given range. Return -1 if
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* no such partition exists.
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*/
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int osmo_gsm48_range_enc_find_index(enum osmo_gsm48_range range, const int *freqs, const int size)
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{
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int i, j, n;
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const int RANGE_DELTA = (range - 1) / 2;
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for (i = 0; i < size; ++i) {
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n = 0;
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for (j = 0; j < size; ++j) {
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if (mod(freqs[j] - freqs[i], range) <= RANGE_DELTA)
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n += 1;
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}
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if (n - 1 == (size - 1) / 2)
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return i;
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}
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return -1;
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}
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/* Worker for range_enc_arfcns(), do not call directly. */
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static int _range_enc_arfcns(enum osmo_gsm48_range range,
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const int *arfcns, int size, int *out,
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const int index)
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{
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int split_at;
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int i;
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/*
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* The below is a GNU extension and we can remove it when
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* we move to a quicksort like in-situ swap with the pivot.
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*/
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int arfcns_left[size / 2];
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int arfcns_right[size / 2];
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int l_size;
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int r_size;
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int l_origin;
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int r_origin;
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/* Now do the processing */
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split_at = osmo_gsm48_range_enc_find_index(range, arfcns, size);
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if (split_at < 0)
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return -EINVAL;
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/* we now know where to split */
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out[index] = 1 + arfcns[split_at];
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/* calculate the work that needs to be done for the leafs */
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l_origin = mod(arfcns[split_at] + ((range - 1) / 2) + 1, range);
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r_origin = mod(arfcns[split_at] + 1, range);
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for (i = 0, l_size = 0, r_size = 0; i < size; ++i) {
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if (mod(arfcns[i] - l_origin, range) < range / 2)
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arfcns_left[l_size++] = mod(arfcns[i] - l_origin, range);
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if (mod(arfcns[i] - r_origin, range) < range / 2)
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arfcns_right[r_size++] = mod(arfcns[i] - r_origin, range);
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}
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/*
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* Now recurse and we need to make this iterative... but as the
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* tree is balanced the stack will not be too deep.
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*/
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if (l_size)
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osmo_gsm48_range_enc_arfcns(range / 2, arfcns_left, l_size,
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out, index + greatest_power_of_2_lesser_or_equal_to(index + 1));
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if (r_size)
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osmo_gsm48_range_enc_arfcns((range - 1) / 2, arfcns_right, r_size,
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out, index + (2 * greatest_power_of_2_lesser_or_equal_to(index + 1)));
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return 0;
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}
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/**
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* Range encode the ARFCN list.
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* \param range The range to use.
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* \param arfcns The list of ARFCNs
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* \param size The size of the list of ARFCNs
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* \param out Place to store the W(i) output.
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*/
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int osmo_gsm48_range_enc_arfcns(enum osmo_gsm48_range range,
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const int *arfcns, int size, int *out,
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const int index)
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{
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if (size <= 0)
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return 0;
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if (size == 1) {
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out[index] = 1 + arfcns[0];
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return 0;
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}
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return _range_enc_arfcns(range, arfcns, size, out, index);
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}
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/*
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* The easiest is to use f0 == arfcns[0]. This means that under certain
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* circumstances we can encode less ARFCNs than possible with an optimal f0.
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*
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* TODO: Solve the optimisation problem and pick f0 so that the max distance
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* is the smallest. Taking into account the modulo operation. I think picking
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* size/2 will be the optimal arfcn.
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*/
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/**
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* This implements the range determination as described in GSM 04.08 J4. The
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* result will be a base frequency f0 and the range to use. Note that for range
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* 1024 encoding f0 always refers to ARFCN 0 even if it is not an element of
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* the arfcns list.
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*
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* \param[in] arfcns The input frequencies, they must be sorted, lowest number first
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* \param[in] size The length of the array
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* \param[out] f0 The selected F0 base frequency. It might not be inside the list
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*/
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int osmo_gsm48_range_enc_determine_range(const int *arfcns, const int size, int *f0)
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{
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int max = 0;
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/*
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* Go for the easiest. And pick arfcns[0] == f0.
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*/
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max = arfcns[size - 1] - arfcns[0];
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*f0 = arfcns[0];
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if (max < 128 && size <= 29)
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return OSMO_GSM48_ARFCN_RANGE_128;
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if (max < 256 && size <= 22)
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return OSMO_GSM48_ARFCN_RANGE_256;
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if (max < 512 && size <= 18)
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return OSMO_GSM48_ARFCN_RANGE_512;
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if (max < 1024 && size <= 17) {
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*f0 = 0;
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return OSMO_GSM48_ARFCN_RANGE_1024;
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}
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return OSMO_GSM48_ARFCN_RANGE_INVALID;
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}
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static void write_orig_arfcn(uint8_t *chan_list, int f0)
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{
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chan_list[0] |= (f0 >> 9) & 1;
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chan_list[1] = (f0 >> 1);
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chan_list[2] = (f0 & 1) << 7;
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}
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static void write_all_wn(uint8_t *chan_list, int bit_offs,
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int *w, int w_size, int w1_len)
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{
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int octet_offs = 0; /* offset into chan_list */
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int wk_len = w1_len; /* encoding size in bits of w[k] */
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int k; /* 1 based */
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int level = 0; /* tree level, top level = 0 */
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int lvl_left = 1; /* nodes per tree level */
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/* W(2^i) to W(2^(i+1)-1) are on w1_len-i bits when present */
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for (k = 1; k <= w_size; k++) {
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int wk_left = wk_len;
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while (wk_left > 0) {
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int cur_bits = 8 - bit_offs;
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int cur_mask;
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int wk_slice;
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if (cur_bits > wk_left)
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cur_bits = wk_left;
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cur_mask = ((1 << cur_bits) - 1);
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/* advance */
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wk_left -= cur_bits;
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bit_offs += cur_bits;
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/* right aligned wk data for current out octet */
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wk_slice = (w[k-1] >> wk_left) & cur_mask;
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/* cur_bits now contains the number of bits
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* that are to be copied from wk to the chan_list.
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* wk_left is set to the number of bits that must
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* not yet be copied.
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* bit_offs points after the bit area that is going to
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* be overwritten:
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*
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* wk_left
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* |
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* v
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* wk: WWWWWWWWWWW
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* |||||<-- wk_slice, cur_bits=5
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* --WWWWW-
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* ^
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* |
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* bit_offs
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*/
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chan_list[octet_offs] &= ~(cur_mask << (8 - bit_offs));
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chan_list[octet_offs] |= wk_slice << (8 - bit_offs);
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/* adjust output */
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if (bit_offs == 8) {
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bit_offs = 0;
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octet_offs += 1;
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}
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}
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/* adjust bit sizes */
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lvl_left -= 1;
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if (!lvl_left) {
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/* completed tree level, advance to next */
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level += 1;
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lvl_left = 1 << level;
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wk_len -= 1;
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}
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}
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}
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int osmo_gsm48_range_enc_128(uint8_t *chan_list, int f0, int *w)
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{
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chan_list[0] = 0x8C;
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write_orig_arfcn(chan_list, f0);
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write_all_wn(&chan_list[2], 1, w, 28, 7);
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return 0;
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}
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int osmo_gsm48_range_enc_256(uint8_t *chan_list, int f0, int *w)
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{
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chan_list[0] = 0x8A;
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write_orig_arfcn(chan_list, f0);
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write_all_wn(&chan_list[2], 1, w, 21, 8);
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return 0;
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}
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int osmo_gsm48_range_enc_512(uint8_t *chan_list, int f0, int *w)
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{
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chan_list[0] = 0x88;
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write_orig_arfcn(chan_list, f0);
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write_all_wn(&chan_list[2], 1, w, 17, 9);
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return 0;
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}
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int osmo_gsm48_range_enc_1024(uint8_t *chan_list, int f0, int f0_included, int *w)
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{
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chan_list[0] = 0x80 | (f0_included << 2);
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write_all_wn(&chan_list[0], 6, w, 16, 10);
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return 0;
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}
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int osmo_gsm48_range_enc_filter_arfcns(int *arfcns, const int size, const int f0, int *f0_included)
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{
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int i, j = 0;
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*f0_included = 0;
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for (i = 0; i < size; ++i) {
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/*
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* Appendix J.4 says the following:
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* All frequencies except F(0), minus F(0) + 1.
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* I assume we need to exclude it here.
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*/
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if (arfcns[i] == f0) {
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*f0_included = 1;
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continue;
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}
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arfcns[j++] = mod(arfcns[i] - (f0 + 1), 1024);
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}
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return j;
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}
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@ -518,6 +518,15 @@ osmo_apn_qualify_from_imsi;
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osmo_apn_to_str;
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osmo_apn_from_str;
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osmo_gsm48_range_enc_determine_range;
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osmo_gsm48_range_enc_arfcns;
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osmo_gsm48_range_enc_find_index;
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osmo_gsm48_range_enc_filter_arfcns;
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osmo_gsm48_range_enc_128;
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osmo_gsm48_range_enc_256;
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osmo_gsm48_range_enc_512;
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osmo_gsm48_range_enc_1024;
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osmo_gsup_encode;
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osmo_gsup_decode;
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osmo_gsup_message_type_names;
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@ -25,6 +25,7 @@
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#include <osmocom/gsm/protocol/gsm_04_08.h>
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#include <osmocom/gsm/gsm48_ie.h>
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#include <osmocom/gsm/gsm48.h>
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#include <osmocom/gsm/gsm48_arfcn_range_encode.h>
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#include <osmocom/gsm/mncc.h>
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#include <osmocom/core/backtrace.h>
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#include <osmocom/core/utils.h>
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@ -609,6 +610,338 @@ static void test_mid_decode_zero_length(void)
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printf("\n");
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}
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struct {
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int range;
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int arfcns_num;
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int arfcns[OSMO_GSM48_RANGE_ENC_MAX_ARFCNS];
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} arfcn_test_ranges[] = {
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{OSMO_GSM48_ARFCN_RANGE_512, 12,
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{ 1, 12, 31, 51, 57, 91, 97, 98, 113, 117, 120, 125 }},
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{OSMO_GSM48_ARFCN_RANGE_512, 17,
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{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 }},
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{OSMO_GSM48_ARFCN_RANGE_512, 18,
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{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 }},
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{OSMO_GSM48_ARFCN_RANGE_512, 18,
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{ 1, 17, 31, 45, 58, 79, 81, 97,
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113, 127, 213, 277, 287, 311, 331, 391,
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417, 511 }},
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{OSMO_GSM48_ARFCN_RANGE_512, 6,
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{ 1, 17, 31, 45, 58, 79 }},
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{OSMO_GSM48_ARFCN_RANGE_512, 6,
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{ 10, 17, 31, 45, 58, 79 }},
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||||
{OSMO_GSM48_ARFCN_RANGE_1024, 17,
|
||||
{ 0, 17, 31, 45, 58, 79, 81, 97,
|
||||
113, 127, 213, 277, 287, 311, 331, 391,
|
||||
1023 }},
|
||||
{OSMO_GSM48_ARFCN_RANGE_1024, 16,
|
||||
{ 17, 31, 45, 58, 79, 81, 97, 113,
|
||||
127, 213, 277, 287, 311, 331, 391, 1023 }},
|
||||
{-1}
|
||||
};
|
||||
|
||||
static int test_single_range_encoding(int range, const int *orig_arfcns, int arfcns_num, int silent)
|
||||
{
|
||||
int arfcns[OSMO_GSM48_RANGE_ENC_MAX_ARFCNS];
|
||||
int w[OSMO_GSM48_RANGE_ENC_MAX_ARFCNS];
|
||||
int f0_included = 0;
|
||||
int rc, f0;
|
||||
uint8_t chan_list[16] = {0};
|
||||
struct gsm_sysinfo_freq dec_freq[1024] = {{0}};
|
||||
int dec_arfcns[OSMO_GSM48_RANGE_ENC_MAX_ARFCNS] = {0};
|
||||
int dec_arfcns_count = 0;
|
||||
int arfcns_used = 0;
|
||||
int i;
|
||||
|
||||
arfcns_used = arfcns_num;
|
||||
memmove(arfcns, orig_arfcns, sizeof(arfcns));
|
||||
|
||||
f0 = range == OSMO_GSM48_ARFCN_RANGE_1024 ? 0 : arfcns[0];
|
||||
/*
|
||||
* Manipulate the ARFCN list according to the rules in J4 depending
|
||||
* on the selected range.
|
||||
*/
|
||||
arfcns_used = osmo_gsm48_range_enc_filter_arfcns(arfcns, arfcns_used, f0, &f0_included);
|
||||
|
||||
memset(w, 0, sizeof(w));
|
||||
osmo_gsm48_range_enc_arfcns(range, arfcns, arfcns_used, w, 0);
|
||||
|
||||
if (!silent)
|
||||
printf("range=%d, arfcns_used=%d, f0=%d, f0_included=%d\n", range, arfcns_used, f0, f0_included);
|
||||
|
||||
/* Select the range and the amount of bits needed */
|
||||
switch (range) {
|
||||
case OSMO_GSM48_ARFCN_RANGE_128:
|
||||
osmo_gsm48_range_enc_128(chan_list, f0, w);
|
||||
break;
|
||||
case OSMO_GSM48_ARFCN_RANGE_256:
|
||||
osmo_gsm48_range_enc_256(chan_list, f0, w);
|
||||
break;
|
||||
case OSMO_GSM48_ARFCN_RANGE_512:
|
||||
osmo_gsm48_range_enc_512(chan_list, f0, w);
|
||||
break;
|
||||
case OSMO_GSM48_ARFCN_RANGE_1024:
|
||||
osmo_gsm48_range_enc_1024(chan_list, f0, f0_included, w);
|
||||
break;
|
||||
default:
|
||||
return 1;
|
||||
};
|
||||
|
||||
if (!silent)
|
||||
printf("chan_list = %s\n",
|
||||
osmo_hexdump(chan_list, sizeof(chan_list)));
|
||||
|
||||
rc = gsm48_decode_freq_list(dec_freq, chan_list, sizeof(chan_list),
|
||||
0xfe, 1);
|
||||
if (rc != 0) {
|
||||
printf("Cannot decode freq list, rc = %d\n", rc);
|
||||
return 1;
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(dec_freq); i++) {
|
||||
if (dec_freq[i].mask &&
|
||||
dec_arfcns_count < ARRAY_SIZE(dec_arfcns))
|
||||
dec_arfcns[dec_arfcns_count++] = i;
|
||||
}
|
||||
|
||||
if (!silent) {
|
||||
printf("Decoded freqs %d (expected %d)\n",
|
||||
dec_arfcns_count, arfcns_num);
|
||||
printf("Decoded: ");
|
||||
for (i = 0; i < dec_arfcns_count; i++) {
|
||||
printf("%d ", dec_arfcns[i]);
|
||||
if (dec_arfcns[i] != orig_arfcns[i])
|
||||
printf("(!= %d) ", orig_arfcns[i]);
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
if (dec_arfcns_count != arfcns_num) {
|
||||
printf("Wrong number of arfcns\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (memcmp(dec_arfcns, orig_arfcns, sizeof(dec_arfcns)) != 0) {
|
||||
printf("Decoding error, got wrong freqs\n");
|
||||
printf(" w = ");
|
||||
for (i = 0; i < ARRAY_SIZE(w); i++)
|
||||
printf("%d ", w[i]);
|
||||
printf("\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void test_random_range_encoding(int range, int max_arfcn_num)
|
||||
{
|
||||
int arfcns_num = 0;
|
||||
int test_idx;
|
||||
int rc, max_count;
|
||||
int num_tests = 1024;
|
||||
|
||||
printf("Random range test: range %d, max num ARFCNs %d\n",
|
||||
range, max_arfcn_num);
|
||||
|
||||
srandom(1);
|
||||
|
||||
for (max_count = 1; max_count < max_arfcn_num; max_count++) {
|
||||
for (test_idx = 0; test_idx < num_tests; test_idx++) {
|
||||
int count;
|
||||
int i;
|
||||
int min_freq = 0;
|
||||
|
||||
int rnd_arfcns[OSMO_GSM48_RANGE_ENC_MAX_ARFCNS] = {0};
|
||||
char rnd_arfcns_set[1024] = {0};
|
||||
|
||||
if (range < OSMO_GSM48_ARFCN_RANGE_1024)
|
||||
min_freq = random() % (1023 - range);
|
||||
|
||||
for (count = max_count; count; ) {
|
||||
int arfcn = min_freq + random() % (range + 1);
|
||||
OSMO_ASSERT(arfcn < ARRAY_SIZE(rnd_arfcns_set));
|
||||
|
||||
if (!rnd_arfcns_set[arfcn]) {
|
||||
rnd_arfcns_set[arfcn] = 1;
|
||||
count -= 1;
|
||||
}
|
||||
}
|
||||
|
||||
arfcns_num = 0;
|
||||
for (i = 0; i < ARRAY_SIZE(rnd_arfcns_set); i++)
|
||||
if (rnd_arfcns_set[i])
|
||||
rnd_arfcns[arfcns_num++] = i;
|
||||
|
||||
rc = test_single_range_encoding(range, rnd_arfcns,
|
||||
arfcns_num, 1);
|
||||
if (rc != 0) {
|
||||
printf("Failed on test %d, range %d, num ARFCNs %d\n",
|
||||
test_idx, range, max_count);
|
||||
test_single_range_encoding(range, rnd_arfcns,
|
||||
arfcns_num, 0);
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void test_range_encoding()
|
||||
{
|
||||
int *arfcns;
|
||||
int arfcns_num = 0;
|
||||
int test_idx;
|
||||
int range;
|
||||
|
||||
for (test_idx = 0; arfcn_test_ranges[test_idx].arfcns_num > 0; test_idx++)
|
||||
{
|
||||
arfcns_num = arfcn_test_ranges[test_idx].arfcns_num;
|
||||
arfcns = &arfcn_test_ranges[test_idx].arfcns[0];
|
||||
range = arfcn_test_ranges[test_idx].range;
|
||||
|
||||
printf("Range test %d: range %d, num ARFCNs %d\n",
|
||||
test_idx, range, arfcns_num);
|
||||
|
||||
test_single_range_encoding(range, arfcns, arfcns_num, 0);
|
||||
}
|
||||
|
||||
test_random_range_encoding(OSMO_GSM48_ARFCN_RANGE_128, 29);
|
||||
test_random_range_encoding(OSMO_GSM48_ARFCN_RANGE_256, 22);
|
||||
test_random_range_encoding(OSMO_GSM48_ARFCN_RANGE_512, 18);
|
||||
test_random_range_encoding(OSMO_GSM48_ARFCN_RANGE_1024, 16);
|
||||
}
|
||||
|
||||
static int freqs1[] = {
|
||||
12, 70, 121, 190, 250, 320, 401, 475, 520, 574, 634, 700, 764, 830, 905, 980
|
||||
};
|
||||
|
||||
static int freqs2[] = {
|
||||
402, 460, 1, 67, 131, 197, 272, 347,
|
||||
};
|
||||
|
||||
static int freqs3[] = {
|
||||
68, 128, 198, 279, 353, 398, 452,
|
||||
|
||||
};
|
||||
|
||||
static int w_out[] = {
|
||||
122, 2, 69, 204, 75, 66, 60, 70, 83, 3, 24, 67, 54, 64, 70, 9,
|
||||
};
|
||||
|
||||
static int range128[] = {
|
||||
1, 1 + 127,
|
||||
};
|
||||
|
||||
static int range256[] = {
|
||||
1, 1 + 128,
|
||||
};
|
||||
|
||||
static int range512[] = {
|
||||
1, 1+ 511,
|
||||
};
|
||||
|
||||
|
||||
#define VERIFY(res, cmp, wanted) \
|
||||
if (!(res cmp wanted)) { \
|
||||
printf("ASSERT failed: %s:%d Wanted: %d %s %d\n", \
|
||||
__FILE__, __LINE__, (int) res, # cmp, (int) wanted); \
|
||||
}
|
||||
|
||||
static void test_arfcn_filter()
|
||||
{
|
||||
int arfcns[50], i, res, f0_included;
|
||||
for (i = 0; i < ARRAY_SIZE(arfcns); ++i)
|
||||
arfcns[i] = (i + 1) * 2;
|
||||
|
||||
/* check that the arfcn is taken out. f0_included is only set for Range1024 */
|
||||
f0_included = 24;
|
||||
res = osmo_gsm48_range_enc_filter_arfcns(arfcns, ARRAY_SIZE(arfcns), arfcns[0], &f0_included);
|
||||
VERIFY(res, ==, ARRAY_SIZE(arfcns) - 1);
|
||||
VERIFY(f0_included, ==, 1);
|
||||
for (i = 0; i < res; ++i)
|
||||
VERIFY(arfcns[i], ==, ((i+2) * 2) - (2+1));
|
||||
|
||||
/* check with range1024, ARFCN 0 is included */
|
||||
for (i = 0; i < ARRAY_SIZE(arfcns); ++i)
|
||||
arfcns[i] = i * 2;
|
||||
res = osmo_gsm48_range_enc_filter_arfcns(arfcns, ARRAY_SIZE(arfcns), 0, &f0_included);
|
||||
VERIFY(res, ==, ARRAY_SIZE(arfcns) - 1);
|
||||
VERIFY(f0_included, ==, 1);
|
||||
for (i = 0; i < res; ++i)
|
||||
VERIFY(arfcns[i], ==, (i + 1) * 2 - 1);
|
||||
|
||||
/* check with range1024, ARFCN 0 not included */
|
||||
for (i = 0; i < ARRAY_SIZE(arfcns); ++i)
|
||||
arfcns[i] = (i + 1) * 2;
|
||||
res = osmo_gsm48_range_enc_filter_arfcns(arfcns, ARRAY_SIZE(arfcns), 0, &f0_included);
|
||||
VERIFY(res, ==, ARRAY_SIZE(arfcns));
|
||||
VERIFY(f0_included, ==, 0);
|
||||
for (i = 0; i < res; ++i)
|
||||
VERIFY(arfcns[i], ==, ((i + 1) * 2) - 1);
|
||||
}
|
||||
|
||||
static void test_print_encoding()
|
||||
{
|
||||
int rc;
|
||||
int w[17];
|
||||
uint8_t chan_list[16];
|
||||
memset(chan_list, 0x23, sizeof(chan_list));
|
||||
|
||||
for (rc = 0; rc < ARRAY_SIZE(w); ++rc)
|
||||
switch (rc % 3) {
|
||||
case 0:
|
||||
w[rc] = 0xAAAA;
|
||||
break;
|
||||
case 1:
|
||||
w[rc] = 0x5555;
|
||||
break;
|
||||
case 2:
|
||||
w[rc] = 0x9696;
|
||||
break;
|
||||
}
|
||||
|
||||
osmo_gsm48_range_enc_512(chan_list, (1 << 9) | 0x96, w);
|
||||
|
||||
printf("Range512: %s\n", osmo_hexdump(chan_list, ARRAY_SIZE(chan_list)));
|
||||
}
|
||||
|
||||
static void test_si_range_helpers()
|
||||
{
|
||||
int ws[(sizeof(freqs1)/sizeof(freqs1[0]))];
|
||||
int i, f0 = 0xFFFFFF;
|
||||
|
||||
memset(&ws[0], 0x23, sizeof(ws));
|
||||
|
||||
i = osmo_gsm48_range_enc_find_index(1023, freqs1, ARRAY_SIZE(freqs1));
|
||||
printf("Element is: %d => freqs[i] = %d\n", i, i >= 0 ? freqs1[i] : -1);
|
||||
VERIFY(i, ==, 2);
|
||||
|
||||
i = osmo_gsm48_range_enc_find_index(511, freqs2, ARRAY_SIZE(freqs2));
|
||||
printf("Element is: %d => freqs[i] = %d\n", i, i >= 0 ? freqs2[i] : -1);
|
||||
VERIFY(i, ==, 2);
|
||||
|
||||
i = osmo_gsm48_range_enc_find_index(511, freqs3, ARRAY_SIZE(freqs3));
|
||||
printf("Element is: %d => freqs[i] = %d\n", i, i >= 0 ? freqs3[i] : -1);
|
||||
VERIFY(i, ==, 0);
|
||||
|
||||
osmo_gsm48_range_enc_arfcns(1023, freqs1, ARRAY_SIZE(freqs1), ws, 0);
|
||||
|
||||
for (i = 0; i < sizeof(freqs1)/sizeof(freqs1[0]); ++i) {
|
||||
printf("w[%d]=%d\n", i, ws[i]);
|
||||
VERIFY(ws[i], ==, w_out[i]);
|
||||
}
|
||||
|
||||
i = osmo_gsm48_range_enc_determine_range(range128, ARRAY_SIZE(range128), &f0);
|
||||
VERIFY(i, ==, OSMO_GSM48_ARFCN_RANGE_128);
|
||||
VERIFY(f0, ==, 1);
|
||||
|
||||
i = osmo_gsm48_range_enc_determine_range(range256, ARRAY_SIZE(range256), &f0);
|
||||
VERIFY(i, ==, OSMO_GSM48_ARFCN_RANGE_256);
|
||||
VERIFY(f0, ==, 1);
|
||||
|
||||
i = osmo_gsm48_range_enc_determine_range(range512, ARRAY_SIZE(range512), &f0);
|
||||
VERIFY(i, ==, OSMO_GSM48_ARFCN_RANGE_512);
|
||||
VERIFY(f0, ==, 1);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
test_bearer_cap();
|
||||
|
|
@ -619,5 +952,10 @@ int main(int argc, char **argv)
|
|||
test_ra_cap();
|
||||
test_lai_encode_decode();
|
||||
|
||||
test_si_range_helpers();
|
||||
test_arfcn_filter();
|
||||
test_print_encoding();
|
||||
test_range_encoding();
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -282,3 +282,67 @@ RA test...passed
|
|||
Encoded 21 63 54 00 17
|
||||
gsm48_decode_lai2() gives 123-456-23 (3-digit MNC)
|
||||
passed
|
||||
Element is: 2 => freqs[i] = 121
|
||||
Element is: 2 => freqs[i] = 1
|
||||
Element is: 0 => freqs[i] = 68
|
||||
w[0]=122
|
||||
w[1]=2
|
||||
w[2]=69
|
||||
w[3]=204
|
||||
w[4]=75
|
||||
w[5]=66
|
||||
w[6]=60
|
||||
w[7]=70
|
||||
w[8]=83
|
||||
w[9]=3
|
||||
w[10]=24
|
||||
w[11]=67
|
||||
w[12]=54
|
||||
w[13]=64
|
||||
w[14]=70
|
||||
w[15]=9
|
||||
Range512: 89 4b 2a 95 65 95 55 2c a9 55 aa 55 6a 95 59 55
|
||||
Range test 0: range 511, num ARFCNs 12
|
||||
range=511, arfcns_used=11, f0=1, f0_included=1
|
||||
chan_list = 88 00 98 34 85 36 7c 50 22 dc 5e ec 00 00 00 00
|
||||
Decoded freqs 12 (expected 12)
|
||||
Decoded: 1 12 31 51 57 91 97 98 113 117 120 125
|
||||
Range test 1: range 511, num ARFCNs 17
|
||||
range=511, arfcns_used=16, f0=1, f0_included=1
|
||||
chan_list = 88 00 82 7f 01 3f 7e 04 0b ff ff fc 10 41 07 e0
|
||||
Decoded freqs 17 (expected 17)
|
||||
Decoded: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
|
||||
Range test 2: range 511, num ARFCNs 18
|
||||
range=511, arfcns_used=17, f0=1, f0_included=1
|
||||
chan_list = 88 00 82 7f 01 7f 7e 04 0b ff ff fc 10 41 07 ff
|
||||
Decoded freqs 18 (expected 18)
|
||||
Decoded: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
|
||||
Range test 3: range 511, num ARFCNs 18
|
||||
range=511, arfcns_used=17, f0=1, f0_included=1
|
||||
chan_list = 88 00 94 3a 44 32 d7 2a 43 2a 13 94 e5 38 39 f6
|
||||
Decoded freqs 18 (expected 18)
|
||||
Decoded: 1 17 31 45 58 79 81 97 113 127 213 277 287 311 331 391 417 511
|
||||
Range test 4: range 511, num ARFCNs 6
|
||||
range=511, arfcns_used=5, f0=1, f0_included=1
|
||||
chan_list = 88 00 8b 3c 88 b9 6b 00 00 00 00 00 00 00 00 00
|
||||
Decoded freqs 6 (expected 6)
|
||||
Decoded: 1 17 31 45 58 79
|
||||
Range test 5: range 511, num ARFCNs 6
|
||||
range=511, arfcns_used=5, f0=10, f0_included=1
|
||||
chan_list = 88 05 08 fc 88 b9 6b 00 00 00 00 00 00 00 00 00
|
||||
Decoded freqs 6 (expected 6)
|
||||
Decoded: 10 17 31 45 58 79
|
||||
Range test 6: range 1023, num ARFCNs 17
|
||||
range=1023, arfcns_used=16, f0=0, f0_included=1
|
||||
chan_list = 84 71 e4 ab b9 58 05 cb 39 17 fd b0 75 62 0f 2f
|
||||
Decoded freqs 17 (expected 17)
|
||||
Decoded: 0 17 31 45 58 79 81 97 113 127 213 277 287 311 331 391 1023
|
||||
Range test 7: range 1023, num ARFCNs 16
|
||||
range=1023, arfcns_used=16, f0=0, f0_included=0
|
||||
chan_list = 80 71 e4 ab b9 58 05 cb 39 17 fd b0 75 62 0f 2f
|
||||
Decoded freqs 16 (expected 16)
|
||||
Decoded: 17 31 45 58 79 81 97 113 127 213 277 287 311 331 391 1023
|
||||
Random range test: range 127, max num ARFCNs 29
|
||||
Random range test: range 255, max num ARFCNs 22
|
||||
Random range test: range 511, max num ARFCNs 18
|
||||
Random range test: range 1023, max num ARFCNs 16
|
||||
|
|
|
|||
Loading…
Reference in New Issue