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osmo-msc/openbsc/tests/gsm0408/gsm0408_test.c

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/* simple test for the gsm0408 formatting functions */
/*
* (C) 2008 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 Affero General Public License as published by
* the Free Software Foundation; either version 3 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 Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <openbsc/gsm_04_08.h>
#include <openbsc/gsm_subscriber.h>
#include <openbsc/debug.h>
#include <openbsc/arfcn_range_encode.h>
#include <osmocom/core/application.h>
#define COMPARE(result, op, value) \
if (!((result) op (value))) {\
fprintf(stderr, "Compare failed. Was %x should be %x in %s:%d\n",result, value, __FILE__, __LINE__); \
exit(-1); \
}
#define COMPARE_STR(result, value) \
if (strcmp(result, value) != 0) { \
fprintf(stderr, "Compare failed. Was %s should be %s in %s:%d\n",result, value, __FILE__, __LINE__); \
exit(-1); \
}
#define DBG(...)
#define VERIFY(res, cmp, wanted) \
if (!(res cmp wanted)) { \
printf("ASSERT failed: %s:%d Wanted: %d %s %d\n", \
__FILE__, __LINE__, res, # cmp, wanted); \
}
/*
* Test Location Area Identifier formatting. Table 10.5.3 of 04.08
*/
static void test_location_area_identifier(void)
{
struct gsm48_loc_area_id lai48;
printf("Testing test location area identifier\n");
/*
* Test the default/test setup. Coming from
* bsc_hack.c dumps
*/
gsm48_generate_lai(&lai48, 1, 1, 1);
COMPARE(lai48.digits[0], ==, 0x00);
COMPARE(lai48.digits[1], ==, 0xF1);
COMPARE(lai48.digits[2], ==, 0x10);
COMPARE(lai48.lac, ==, htons(0x0001));
gsm48_generate_lai(&lai48, 602, 1, 15);
COMPARE(lai48.digits[0], ==, 0x06);
COMPARE(lai48.digits[1], ==, 0xF2);
COMPARE(lai48.digits[2], ==, 0x10);
COMPARE(lai48.lac, ==, htons(0x000f));
}
static void test_mi_functionality(void)
{
const char *imsi_odd = "987654321098763";
const char *imsi_even = "9876543210987654";
const uint32_t tmsi = 0xfabeacd0;
uint8_t mi[128];
unsigned int mi_len;
char mi_parsed[GSM48_MI_SIZE];
printf("Testing parsing and generating TMSI/IMSI\n");
/* tmsi code */
mi_len = gsm48_generate_mid_from_tmsi(mi, tmsi);
gsm48_mi_to_string(mi_parsed, sizeof(mi_parsed), mi + 2, mi_len - 2);
COMPARE((uint32_t)strtoul(mi_parsed, NULL, 10), ==, tmsi);
/* imsi code */
mi_len = gsm48_generate_mid_from_imsi(mi, imsi_odd);
gsm48_mi_to_string(mi_parsed, sizeof(mi_parsed), mi + 2, mi_len -2);
printf("hex: %s\n", osmo_hexdump(mi, mi_len));
COMPARE_STR(mi_parsed, imsi_odd);
mi_len = gsm48_generate_mid_from_imsi(mi, imsi_even);
gsm48_mi_to_string(mi_parsed, sizeof(mi_parsed), mi + 2, mi_len -2);
printf("hex: %s\n", osmo_hexdump(mi, mi_len));
COMPARE_STR(mi_parsed, imsi_even);
}
struct {
int range;
int arfcns_num;
int arfcns[RANGE_ENC_MAX_ARFCNS];
} arfcn_test_ranges[] = {
{ARFCN_RANGE_512, 12,
{ 1, 12, 31, 51, 57, 91, 97, 98, 113, 117, 120, 125 }},
{ARFCN_RANGE_512, 17,
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 }},
{ARFCN_RANGE_512, 18,
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 }},
{ARFCN_RANGE_512, 18,
{ 1, 17, 31, 45, 58, 79, 81, 97,
113, 127, 213, 277, 287, 311, 331, 391,
417, 511 }},
{ARFCN_RANGE_512, 6,
{ 1, 17, 31, 45, 58, 79 }},
{ARFCN_RANGE_512, 6,
{ 10, 17, 31, 45, 58, 79 }},
{ARFCN_RANGE_1024, 17,
{ 0, 17, 31, 45, 58, 79, 81, 97,
113, 127, 213, 277, 287, 311, 331, 391,
1023 }},
{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[RANGE_ENC_MAX_ARFCNS];
int w[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[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 == ARFCN_RANGE_1024 ? 0 : arfcns[0];
/*
* Manipulate the ARFCN list according to the rules in J4 depending
* on the selected range.
*/
arfcns_used = range_enc_filter_arfcns(arfcns, arfcns_used,
f0, &f0_included);
memset(w, 0, sizeof(w));
rc = range_enc_arfcns(range, arfcns, arfcns_used, w, 0);
if (rc != 0) {
printf("Cannot compute range W(k), rc = %d\n", rc);
return 1;
}
if (!silent)
fprintf(stderr, "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 ARFCN_RANGE_128:
rc = range_enc_range128(chan_list, f0, w);
break;
case ARFCN_RANGE_256:
rc = range_enc_range256(chan_list, f0, w);
break;
case ARFCN_RANGE_512:
rc = range_enc_range512(chan_list, f0, w);
break;
case ARFCN_RANGE_1024:
rc = range_enc_range1024(chan_list, f0, f0_included, w);
break;
default:
return 1;
};
if (rc != 0) {
printf("Cannot encode range, rc = %d\n", rc);
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");
fprintf(stderr, " w = ");
for (i = 0; i < ARRAY_SIZE(w); i++)
fprintf(stderr, "%d ", w[i]);
fprintf(stderr, "\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[RANGE_ENC_MAX_ARFCNS] = {0};
char rnd_arfcns_set[1024] = {0};
if (range < 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(ARFCN_RANGE_128, 29);
test_random_range_encoding(ARFCN_RANGE_256, 22);
test_random_range_encoding(ARFCN_RANGE_512, 18);
test_random_range_encoding(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,
};
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 = 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 = 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 = 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;
}
rc = range_enc_range512(chan_list, (1 << 9) | 0x96, w);
VERIFY(rc, ==, 0);
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 = range_enc_find_index(1023, freqs1, ARRAY_SIZE(freqs1));
printf("Element is: %d => freqs[i] = %d\n", i, freqs1[i]);
VERIFY(i, ==, 2);
i = range_enc_find_index(511, freqs2, ARRAY_SIZE(freqs2));
printf("Element is: %d => freqs[i] = %d\n", i, freqs2[i]);
VERIFY(i, ==, 2);
i = range_enc_find_index(511, freqs3, ARRAY_SIZE(freqs3));
printf("Element is: %d => freqs[i] = %d\n", i, freqs3[i]);
VERIFY(i, ==, 0);
i = range_enc_arfcns(1023, freqs1, ARRAY_SIZE(freqs1), ws, 0);
VERIFY(i, ==, 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 = range_enc_determine_range(range128, ARRAY_SIZE(range128), &f0);
VERIFY(i, ==, ARFCN_RANGE_128);
VERIFY(f0, ==, 1);
i = range_enc_determine_range(range256, ARRAY_SIZE(range256), &f0);
VERIFY(i, ==, ARFCN_RANGE_256);
VERIFY(f0, ==, 1);
i = range_enc_determine_range(range512, ARRAY_SIZE(range512), &f0);
VERIFY(i, ==, ARFCN_RANGE_512);
VERIFY(f0, ==, 1);
}
int main(int argc, char **argv)
{
osmo_init_logging(&log_info);
log_set_log_level(osmo_stderr_target, LOGL_INFO);
test_location_area_identifier();
test_mi_functionality();
test_si_range_helpers();
test_arfcn_filter();
test_print_encoding();
test_range_encoding();
printf("Done.\n");
return EXIT_SUCCESS;
}
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