diff options
| -rw-r--r-- | include/Makefile.am | 1 | ||||
| -rw-r--r-- | include/osmocom/gsm/gsm48_arfcn_range_encode.h | 25 | ||||
| -rw-r--r-- | src/gsm/Makefile.am | 3 | ||||
| -rw-r--r-- | src/gsm/gsm48_arfcn_range_encode.c | 321 | ||||
| -rw-r--r-- | src/gsm/libosmogsm.map | 9 | ||||
| -rw-r--r-- | tests/gsm0408/gsm0408_test.c | 338 | ||||
| -rw-r--r-- | tests/gsm0408/gsm0408_test.ok | 64 |
7 files changed, 760 insertions, 1 deletions
diff --git a/include/Makefile.am b/include/Makefile.am index 86d8d157..6da5ab61 100644 --- a/include/Makefile.am +++ b/include/Makefile.am @@ -91,6 +91,7 @@ nobase_include_HEADERS = \ osmocom/gsm/gsm23003.h \ osmocom/gsm/gsm29118.h \ osmocom/gsm/gsm48.h \ + osmocom/gsm/gsm48_arfcn_range_encode.h \ osmocom/gsm/gsm48_ie.h \ osmocom/gsm/gsm_utils.h \ osmocom/gsm/gsup.h \ diff --git a/include/osmocom/gsm/gsm48_arfcn_range_encode.h b/include/osmocom/gsm/gsm48_arfcn_range_encode.h new file mode 100644 index 00000000..146c8534 --- /dev/null +++ b/include/osmocom/gsm/gsm48_arfcn_range_encode.h @@ -0,0 +1,25 @@ +/*! \file gsm48_arfcn_range_encode.h */ + +#pragma once + +#include <stdint.h> + +enum osmo_gsm48_range { + OSMO_GSM48_ARFCN_RANGE_INVALID = -1, + OSMO_GSM48_ARFCN_RANGE_128 = 127, + OSMO_GSM48_ARFCN_RANGE_256 = 255, + OSMO_GSM48_ARFCN_RANGE_512 = 511, + OSMO_GSM48_ARFCN_RANGE_1024 = 1023, +}; + +#define OSMO_GSM48_RANGE_ENC_MAX_ARFCNS 29 + +int osmo_gsm48_range_enc_determine_range(const int *arfcns, int size, int *f0_out); +int osmo_gsm48_range_enc_arfcns(enum osmo_gsm48_range rng, const int *arfcns, int sze, int *out, int idx); +int osmo_gsm48_range_enc_find_index(enum osmo_gsm48_range rng, const int *arfcns, int size); +int osmo_gsm48_range_enc_filter_arfcns(int *arfcns, const int sze, const int f0, int *f0_included); + +int osmo_gsm48_range_enc_128(uint8_t *chan_list, int f0, int *w); +int osmo_gsm48_range_enc_256(uint8_t *chan_list, int f0, int *w); +int osmo_gsm48_range_enc_512(uint8_t *chan_list, int f0, int *w); +int osmo_gsm48_range_enc_1024(uint8_t *chan_list, int f0, int f0_incl, int *w); diff --git a/src/gsm/Makefile.am b/src/gsm/Makefile.am index 3d2c5606..c4b5fce3 100644 --- a/src/gsm/Makefile.am +++ b/src/gsm/Makefile.am @@ -21,7 +21,8 @@ lib_LTLIBRARIES = libosmogsm.la BUILT_SOURCES = gsm0503_conv.c libgsmint_la_SOURCES = a5.c rxlev_stat.c tlv_parser.c comp128.c comp128v23.c \ - gsm_utils.c rsl.c gsm48.c gsm48_ie.c gsm0808.c sysinfo.c \ + gsm_utils.c rsl.c gsm48.c gsm48_arfcn_range_encode.c \ + gsm48_ie.c gsm0808.c sysinfo.c \ gprs_cipher_core.c gprs_rlc.c gsm0480.c abis_nm.c gsm0502.c \ gsm0411_utils.c gsm0411_smc.c gsm0411_smr.c gsm0414.c \ lapd_core.c lapdm.c kasumi.c gsm29205.c gsm_04_08_gprs.c \ diff --git a/src/gsm/gsm48_arfcn_range_encode.c b/src/gsm/gsm48_arfcn_range_encode.c new file mode 100644 index 00000000..6423a9a8 --- /dev/null +++ b/src/gsm/gsm48_arfcn_range_encode.c @@ -0,0 +1,321 @@ +/* gsm 04.08 system information (si) encoding and decoding + * 3gpp ts 04.08 version 7.21.0 release 1998 / etsi ts 100 940 v7.21.0 */ + +/* + * (C) 2012 Holger Hans Peter Freyther + * (C) 2012 by On-Waves + * 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 Affero 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 <osmocom/gsm/protocol/gsm_04_08.h> +#include <osmocom/gsm/gsm48_arfcn_range_encode.h> + +#include <osmocom/core/utils.h> + +#include <errno.h> + +static inline int greatest_power_of_2_lesser_or_equal_to(int index) +{ + int power_of_2 = 1; + + do { + power_of_2 *= 2; + } while (power_of_2 <= index); + + /* now go back one step */ + return power_of_2 / 2; +} + +static inline int mod(int data, int range) +{ + int res = data % range; + while (res < 0) + res += range; + return res; +} + +/** + * Determine at which index to split the ARFCNs to create an + * equally size partition for the given range. Return -1 if + * no such partition exists. + */ +int osmo_gsm48_range_enc_find_index(enum osmo_gsm48_range range, const int *freqs, const int size) +{ + int i, j, n; + + const int RANGE_DELTA = (range - 1) / 2; + + for (i = 0; i < size; ++i) { + n = 0; + for (j = 0; j < size; ++j) { + if (mod(freqs[j] - freqs[i], range) <= RANGE_DELTA) + n += 1; + } + + if (n - 1 == (size - 1) / 2) + return i; + } + + return -1; +} + +/* Worker for range_enc_arfcns(), do not call directly. */ +static int _range_enc_arfcns(enum osmo_gsm48_range range, + const int *arfcns, int size, int *out, + const int index) +{ + int split_at; + int i; + + /* + * The below is a GNU extension and we can remove it when + * we move to a quicksort like in-situ swap with the pivot. + */ + int arfcns_left[size / 2]; + int arfcns_right[size / 2]; + int l_size; + int r_size; + int l_origin; + int r_origin; + + /* Now do the processing */ + split_at = osmo_gsm48_range_enc_find_index(range, arfcns, size); + if (split_at < 0) + return -EINVAL; + + /* we now know where to split */ + out[index] = 1 + arfcns[split_at]; + + /* calculate the work that needs to be done for the leafs */ + l_origin = mod(arfcns[split_at] + ((range - 1) / 2) + 1, range); + r_origin = mod(arfcns[split_at] + 1, range); + for (i = 0, l_size = 0, r_size = 0; i < size; ++i) { + if (mod(arfcns[i] - l_origin, range) < range / 2) + arfcns_left[l_size++] = mod(arfcns[i] - l_origin, range); + if (mod(arfcns[i] - r_origin, range) < range / 2) + arfcns_right[r_size++] = mod(arfcns[i] - r_origin, range); + } + + /* + * Now recurse and we need to make this iterative... but as the + * tree is balanced the stack will not be too deep. + */ + if (l_size) + osmo_gsm48_range_enc_arfcns(range / 2, arfcns_left, l_size, + out, index + greatest_power_of_2_lesser_or_equal_to(index + 1)); + if (r_size) + osmo_gsm48_range_enc_arfcns((range - 1) / 2, arfcns_right, r_size, + out, index + (2 * greatest_power_of_2_lesser_or_equal_to(index + 1))); + return 0; +} + +/** + * Range encode the ARFCN list. + * \param range The range to use. + * \param arfcns The list of ARFCNs + * \param size The size of the list of ARFCNs + * \param out Place to store the W(i) output. + */ +int osmo_gsm48_range_enc_arfcns(enum osmo_gsm48_range range, + const int *arfcns, int size, int *out, + const int index) +{ + if (size <= 0) + return 0; + + if (size == 1) { + out[index] = 1 + arfcns[0]; + return 0; + } + + return _range_enc_arfcns(range, arfcns, size, out, index); +} + +/* + * The easiest is to use f0 == arfcns[0]. This means that under certain + * circumstances we can encode less ARFCNs than possible with an optimal f0. + * + * TODO: Solve the optimisation problem and pick f0 so that the max distance + * is the smallest. Taking into account the modulo operation. I think picking + * size/2 will be the optimal arfcn. + */ +/** + * This implements the range determination as described in GSM 04.08 J4. The + * result will be a base frequency f0 and the range to use. Note that for range + * 1024 encoding f0 always refers to ARFCN 0 even if it is not an element of + * the arfcns list. + * + * \param[in] arfcns The input frequencies, they must be sorted, lowest number first + * \param[in] size The length of the array + * \param[out] f0 The selected F0 base frequency. It might not be inside the list + */ +int osmo_gsm48_range_enc_determine_range(const int *arfcns, const int size, int *f0) +{ + int max = 0; + + /* + * Go for the easiest. And pick arfcns[0] == f0. + */ + max = arfcns[size - 1] - arfcns[0]; + *f0 = arfcns[0]; + + if (max < 128 && size <= 29) + return OSMO_GSM48_ARFCN_RANGE_128; + if (max < 256 && size <= 22) + return OSMO_GSM48_ARFCN_RANGE_256; + if (max < 512 && size <= 18) + return OSMO_GSM48_ARFCN_RANGE_512; + if (max < 1024 && size <= 17) { + *f0 = 0; + return OSMO_GSM48_ARFCN_RANGE_1024; + } + + return OSMO_GSM48_ARFCN_RANGE_INVALID; +} + +static void write_orig_arfcn(uint8_t *chan_list, int f0) +{ + chan_list[0] |= (f0 >> 9) & 1; + chan_list[1] = (f0 >> 1); + chan_list[2] = (f0 & 1) << 7; +} + +static void write_all_wn(uint8_t *chan_list, int bit_offs, + int *w, int w_size, int w1_len) +{ + int octet_offs = 0; /* offset into chan_list */ + int wk_len = w1_len; /* encoding size in bits of w[k] */ + int k; /* 1 based */ + int level = 0; /* tree level, top level = 0 */ + int lvl_left = 1; /* nodes per tree level */ + + /* W(2^i) to W(2^(i+1)-1) are on w1_len-i bits when present */ + + for (k = 1; k <= w_size; k++) { + int wk_left = wk_len; + + while (wk_left > 0) { + int cur_bits = 8 - bit_offs; + int cur_mask; + int wk_slice; + + if (cur_bits > wk_left) + cur_bits = wk_left; + + cur_mask = ((1 << cur_bits) - 1); + + /* advance */ + wk_left -= cur_bits; + bit_offs += cur_bits; + + /* right aligned wk data for current out octet */ + wk_slice = (w[k-1] >> wk_left) & cur_mask; + + /* cur_bits now contains the number of bits + * that are to be copied from wk to the chan_list. + * wk_left is set to the number of bits that must + * not yet be copied. + * bit_offs points after the bit area that is going to + * be overwritten: + * + * wk_left + * | + * v + * wk: WWWWWWWWWWW + * |||||<-- wk_slice, cur_bits=5 + * --WWWWW- + * ^ + * | + * bit_offs + */ + + chan_list[octet_offs] &= ~(cur_mask << (8 - bit_offs)); + chan_list[octet_offs] |= wk_slice << (8 - bit_offs); + + /* adjust output */ + if (bit_offs == 8) { + bit_offs = 0; + octet_offs += 1; + } + } + + /* adjust bit sizes */ + lvl_left -= 1; + if (!lvl_left) { + /* completed tree level, advance to next */ + level += 1; + lvl_left = 1 << level; + wk_len -= 1; + } + } +} + +int osmo_gsm48_range_enc_128(uint8_t *chan_list, int f0, int *w) +{ + chan_list[0] = 0x8C; + write_orig_arfcn(chan_list, f0); + + write_all_wn(&chan_list[2], 1, w, 28, 7); + return 0; +} + +int osmo_gsm48_range_enc_256(uint8_t *chan_list, int f0, int *w) +{ + chan_list[0] = 0x8A; + write_orig_arfcn(chan_list, f0); + + write_all_wn(&chan_list[2], 1, w, 21, 8); + return 0; +} + +int osmo_gsm48_range_enc_512(uint8_t *chan_list, int f0, int *w) +{ + chan_list[0] = 0x88; + write_orig_arfcn(chan_list, f0); + + write_all_wn(&chan_list[2], 1, w, 17, 9); + return 0; +} + +int osmo_gsm48_range_enc_1024(uint8_t *chan_list, int f0, int f0_included, int *w) +{ + chan_list[0] = 0x80 | (f0_included << 2); + + write_all_wn(&chan_list[0], 6, w, 16, 10); + return 0; +} + +int osmo_gsm48_range_enc_filter_arfcns(int *arfcns, const int size, const int f0, int *f0_included) +{ + int i, j = 0; + *f0_included = 0; + + for (i = 0; i < size; ++i) { + /* + * Appendix J.4 says the following: + * All frequencies except F(0), minus F(0) + 1. + * I assume we need to exclude it here. + */ + if (arfcns[i] == f0) { + *f0_included = 1; + continue; + } + + arfcns[j++] = mod(arfcns[i] - (f0 + 1), 1024); + } + + return j; +} diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map index cdcbcc98..922ac01f 100644 --- a/src/gsm/libosmogsm.map +++ b/src/gsm/libosmogsm.map @@ -518,6 +518,15 @@ osmo_apn_qualify_from_imsi; osmo_apn_to_str; osmo_apn_from_str; +osmo_gsm48_range_enc_determine_range; +osmo_gsm48_range_enc_arfcns; +osmo_gsm48_range_enc_find_index; +osmo_gsm48_range_enc_filter_arfcns; +osmo_gsm48_range_enc_128; +osmo_gsm48_range_enc_256; +osmo_gsm48_range_enc_512; +osmo_gsm48_range_enc_1024; + osmo_gsup_encode; osmo_gsup_decode; osmo_gsup_message_type_names; diff --git a/tests/gsm0408/gsm0408_test.c b/tests/gsm0408/gsm0408_test.c index 37ef3f15..6902e8e2 100644 --- a/tests/gsm0408/gsm0408_test.c +++ b/tests/gsm0408/gsm0408_test.c @@ -25,6 +25,7 @@ #include <osmocom/gsm/protocol/gsm_04_08.h> #include <osmocom/gsm/gsm48_ie.h> #include <osmocom/gsm/gsm48.h> +#include <osmocom/gsm/gsm48_arfcn_range_encode.h> #include <osmocom/gsm/mncc.h> #include <osmocom/core/backtrace.h> #include <osmocom/core/utils.h> @@ -609,6 +610,338 @@ static void test_mid_decode_zero_length(void) printf("\n"); } +struct { + int range; + int arfcns_num; + int arfcns[OSMO_GSM48_RANGE_ENC_MAX_ARFCNS]; +} arfcn_test_ranges[] = { + {OSMO_GSM48_ARFCN_RANGE_512, 12, + { 1, 12, 31, 51, 57, 91, 97, 98, 113, 117, 120, 125 }}, + {OSMO_GSM48_ARFCN_RANGE_512, 17, + { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 }}, + {OSMO_GSM48_ARFCN_RANGE_512, 18, + { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 }}, + {OSMO_GSM48_ARFCN_RANGE_512, 18, + { 1, 17, 31, 45, 58, 79, 81, 97, + 113, 127, 213, 277, 287, 311, 331, 391, + 417, 511 }}, + {OSMO_GSM48_ARFCN_RANGE_512, 6, + { 1, 17, 31, 45, 58, 79 }}, + {OSMO_GSM48_ARFCN_RANGE_512, 6, + { 10, 17, 31, 45, 58, 79 }}, + {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; } diff --git a/tests/gsm0408/gsm0408_test.ok b/tests/gsm0408/gsm0408_test.ok index 0c135558..8f6630be 100644 --- a/tests/gsm0408/gsm0408_test.ok +++ b/tests/gsm0408/gsm0408_test.ok @@ -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 |