aboutsummaryrefslogtreecommitdiffstats
path: root/tests/coding/coding_test.c
diff options
context:
space:
mode:
Diffstat (limited to 'tests/coding/coding_test.c')
-rw-r--r--tests/coding/coding_test.c238
1 files changed, 195 insertions, 43 deletions
diff --git a/tests/coding/coding_test.c b/tests/coding/coding_test.c
index 2b0830f2..bdfe3002 100644
--- a/tests/coding/coding_test.c
+++ b/tests/coding/coding_test.c
@@ -44,6 +44,19 @@
return; \
} while(0)
+/* Similar to OSMO_ASSERT, but does not panic() */
+#define CHECK_RC_OR_RET(exp, action) \
+ if (!(exp)) { \
+ printf("%s(%s): assert %s failed\n", __func__, action, #exp); \
+ return; \
+ }
+
+#ifdef DEBUG
+#define printd(fmt, args...) printf(fmt, ##args)
+#else
+#define printd(fmt, args...)
+#endif
+
static inline void dump_ubits(ubit_t *bursts_u, unsigned until)
{
printf("U-Bits:\n");
@@ -76,10 +89,12 @@ static void test_xcch(uint8_t *l2)
ubit_t bursts_u[116 * 4];
sbit_t bursts_s[116 * 4];
int n_errors, n_bits_total;
+ int rc;
/* Encode L2 message */
printf("Encoding: %s\n", osmo_hexdump(l2, 23));
- gsm0503_xcch_encode(bursts_u, l2);
+ rc = gsm0503_xcch_encode(bursts_u, l2);
+ CHECK_RC_OR_RET(rc == 0, "encoding");
/* Prepare soft-bits */
osmo_ubit2sbit(bursts_s, bursts_u, 116 * 4);
@@ -91,7 +106,9 @@ static void test_xcch(uint8_t *l2)
memset(bursts_s + 116, 0, 30);
/* Decode, correcting errors */
- gsm0503_xcch_decode(result, bursts_s, &n_errors, &n_bits_total);
+ rc = gsm0503_xcch_decode(result, bursts_s, &n_errors, &n_bits_total);
+ CHECK_RC_OR_RET(rc == 0, "decoding");
+
printf("Decoded: %s\n", osmo_hexdump(result, 23));
printf("xcch_decode: n_errors=%d n_bits_total=%d ber=%.2f\n",
n_errors, n_bits_total, (float) n_errors / n_bits_total);
@@ -110,27 +127,29 @@ static void test_rach(uint8_t bsic, uint8_t ra)
sbit_t bursts_s[36];
/* Encode L2 message */
+ printd("Encoding: %02x\n", ra);
rc = gsm0503_rach_ext_encode(bursts_u, ra, bsic, false);
- printf("Encoding: %02x%s\n", ra, (rc != 0) ? " FAIL" : "");
+ CHECK_RC_OR_RET(rc == 0, "encoding");
/* Prepare soft-bits */
osmo_ubit2sbit(bursts_s, bursts_u, 36);
- printf("U-Bits: %s\n", osmo_ubit_dump(bursts_u, 36));
+ printd("U-Bits: %s\n", osmo_ubit_dump(bursts_u, 36));
- printf("S-Bits: %s\n", osmo_hexdump((uint8_t *)bursts_s, 36));
+ printd("S-Bits: %s\n", osmo_hexdump((uint8_t *)bursts_s, 36));
/* Destroy some bits */
memset(bursts_s + 6, 0, 8);
/* Decode, correcting errors */
rc = gsm0503_rach_decode_ber(&result, bursts_s, bsic, NULL, NULL);
- printf("Decoded: %02x%s\n", result, (rc != 0) ? " FAIL" : "");
+ CHECK_RC_OR_RET(rc == 0, "decoding");
+ printd("Decoded: %02x\n", result);
if (ra != result)
printf("FAIL [RACH]: encoded %u != %u decoded\n", ra, result);
- printf("\n");
+ printd("\n");
}
static void test_rach_ext(uint8_t bsic, uint16_t ra)
@@ -141,27 +160,45 @@ static void test_rach_ext(uint8_t bsic, uint16_t ra)
sbit_t bursts_s[36];
/* Encode L2 message */
+ printd("Encoding: %02x\n", ra);
rc = gsm0503_rach_ext_encode(bursts_u, ra, bsic, true);
- printf("Encoding: %02x%s\n", ra, (rc != 0) ? " FAIL" : "");
+ CHECK_RC_OR_RET(rc == 0, "encoding");
/* Prepare soft-bits */
osmo_ubit2sbit(bursts_s, bursts_u, 36);
- printf("U-Bits: %s\n", osmo_ubit_dump(bursts_u, 36));
+ printd("U-Bits: %s\n", osmo_ubit_dump(bursts_u, 36));
- printf("S-Bits: %s\n", osmo_hexdump((uint8_t *)bursts_s, 36));
+ printd("S-Bits: %s\n", osmo_hexdump((uint8_t *)bursts_s, 36));
/* Destroy some bits */
memset(bursts_s + 9, 0, 8);
/* Decode, correcting errors */
rc = gsm0503_rach_ext_decode_ber(&result, bursts_s, bsic, NULL, NULL);
- printf("Decoded: %02x%s\n", result, (rc != 0) ? " FAIL" : "");
+ CHECK_RC_OR_RET(rc == 0, "decoding");
+ printd("Decoded: %02x\n", result);
if (ra != result)
printf("FAIL [RACH ext]: encoded %u != %u decoded\n", ra, result);
- printf("\n");
+ printd("\n");
+}
+
+static void test_rach_11bit_sample(uint8_t bsic, const sbit_t *payload)
+{
+ int n_errors, n_bits_total;
+ uint16_t ra11;
+ int rc;
+
+ /* Decode, correcting errors */
+ rc = gsm0503_rach_ext_decode_ber(&ra11, payload, bsic, &n_errors, &n_bits_total);
+ if (rc) {
+ printf("%s(): decoding failed (rc=%d)\n", __func__, rc);
+ return;
+ }
+
+ printf("Decoded RA11: 0x%03x\n", ra11);
}
static void test_sch(uint8_t *info)
@@ -169,6 +206,7 @@ static void test_sch(uint8_t *info)
uint8_t result[4];
ubit_t bursts_u[78];
sbit_t bursts_s[78];
+ int rc;
/* Zero bits 25 and above */
info[3] &= 1;
@@ -176,7 +214,8 @@ static void test_sch(uint8_t *info)
/* Encode L2 message */
printf("Encoding: %s\n", osmo_hexdump(info, 4));
- gsm0503_sch_encode(bursts_u, info);
+ rc = gsm0503_sch_encode(bursts_u, info);
+ CHECK_RC_OR_RET(rc == 0, "encoding");
/* Prepare soft-bits */
osmo_ubit2sbit(bursts_s, bursts_u, 78);
@@ -189,7 +228,9 @@ static void test_sch(uint8_t *info)
memset(bursts_s + 6, 0, 10);
/* Decode, correcting errors */
- gsm0503_sch_decode(result, bursts_s);
+ rc = gsm0503_sch_decode(result, bursts_s);
+ CHECK_RC_OR_RET(rc == 0, "decoding");
+
printf("Decoded: %s\n", osmo_hexdump(result, 4));
OSMO_ASSERT(!memcmp(info, result, 4));
@@ -210,7 +251,8 @@ static void test_fr(uint8_t *speech, int len)
/* Encode L2 message */
printf("Encoding: %s\n", osmo_hexdump(speech, len));
- gsm0503_tch_fr_encode(bursts_u, speech, len, 1);
+ rc = gsm0503_tch_fr_encode(bursts_u, speech, len, 1);
+ CHECK_RC_OR_RET(rc == 0, "encoding");
/* Prepare soft-bits */
osmo_ubit2sbit(bursts_s, bursts_u, 116 * 8);
@@ -224,11 +266,12 @@ static void test_fr(uint8_t *speech, int len)
/* Decode, correcting errors */
rc = gsm0503_tch_fr_decode(result, bursts_s, 1, len == 31,
&n_errors, &n_bits_total);
+ CHECK_RC_OR_RET(rc == len, "decoding");
+
printf("Decoded: %s\n", osmo_hexdump(result, len));
printf("tch_fr_decode: n_errors=%d n_bits_total=%d ber=%.2f\n",
n_errors, n_bits_total, (float)n_errors/n_bits_total);
- OSMO_ASSERT(rc == len);
OSMO_ASSERT(!memcmp(speech, result, len));
printf("\n");
@@ -247,7 +290,8 @@ static void test_hr(uint8_t *speech, int len)
/* Encode L2 message */
printf("Encoding: %s\n", osmo_hexdump(speech, len));
- gsm0503_tch_hr_encode(bursts_u, speech, len);
+ rc = gsm0503_tch_hr_encode(bursts_u, speech, len);
+ CHECK_RC_OR_RET(rc == 0, "encoding");
/* Prepare soft-bits */
osmo_ubit2sbit(bursts_s, bursts_u, 116 * 6);
@@ -261,25 +305,96 @@ static void test_hr(uint8_t *speech, int len)
/* Decode, correcting errors */
rc = gsm0503_tch_hr_decode(result, bursts_s, 0,
&n_errors, &n_bits_total);
+ CHECK_RC_OR_RET(rc == len, "decoding");
+
printf("Decoded: %s\n", osmo_hexdump(result, len));
printf("tch_hr_decode: n_errors=%d n_bits_total=%d ber=%.2f\n",
n_errors, n_bits_total, (float)n_errors/n_bits_total);
- OSMO_ASSERT(rc == len);
OSMO_ASSERT(!memcmp(speech, result, len));
printf("\n");
}
-static void test_pdtch(uint8_t *l2, int len)
+struct test_macblock {
+ bool is_egprs;
+ uint16_t exp_burst_bits;
+ uint16_t l2_len;
+ uint8_t l2[54];
+};
+
+static const struct test_macblock test_macblock[] = {
+ /* Random frame */
+ { false,
+ GSM0503_GPRS_BURSTS_NBITS,
+ 54,
+ { 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
+ 0xd9, 0x6d, 0x7d, 0x62, 0x24, 0xc9, 0xd2, 0x92,
+ 0xfa, 0x27, 0x5d, 0x71, 0x7a, 0x59, 0xa8, 0x42,
+ 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
+ 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
+ 0xd9, 0x6d, 0x7d, 0x62, 0x24, 0xc9, 0xd2, 0x92,
+ 0xfa, 0x27, 0x5d, 0x71, 0x7a, 0xa8 }
+ },
+ /* jolly frame */
+ { false,
+ GSM0503_GPRS_BURSTS_NBITS,
+ 23,
+ { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+ 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
+ 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 }
+ },
+/*
+GSM RLC/MAC: EGPRS DL HEADER
+ 0... .... .... 0000 = DL TFI: 0
+ 0... .... crumb 1 of DL TFI (decoded above)
+ .00. .... = RRBP: Reserved Block: (N+13) mod 2715648 (0)
+ ...0 0... = ES/P: RRBP field is not valid (no Polling) (0)
+ .... .111 = USF: 7
+ 01.. .... 0000 0000 .... ...0 = BSN: 1
+ 01.. .... crumb 2 of BSN (decoded above)
+ ..00 .... = PR: 0 dB (included) to 3 dB (excluded) less than BCCH level - P0 (0)
+ .... 0000 crumb 0 of DL TFI (decoded above)
+ 0000 0000 crumb 1 of BSN (decoded above)
+ .00. .... = SPB (DL): No retransmission (0)
+ ...1 011. = CPS: MCS-1/P1 (0x0b)
+ .... ...0 crumb 0 of BSN (decoded above)
+GSM RLC/MAC: EGPRS DL DATA BLOCK 1 (BSN 1)
+ .... ..0. = FBI: Current Block is not last RLC data block in TBF
+ .... ...0 = Extension: Extension octet follows immediately
+ 0000 100. = Length Indicator: 4
+ .... ...0 = Extension: Extension octet follows immediately
+ 0010 000. = Length Indicator: 16
+ .... ...1 = Extension: No extension octet follows
+ data segment: LI[0]=4 indicates: (Last segment of) LLC frame (4 octets)
+ Data (4 bytes)
+ Data: 012b2b2b
+ [Length: 4]
+ data segment: LI[1]=16 indicates: (Last segment of) LLC frame (16 octets)
+ Data (16 bytes)
+ Data: 43c0012b2b2b2b2b2b2b2b2b2b2b2b2b
+ [Length: 16]
+*/
+ { true,
+ GSM0503_GPRS_BURSTS_NBITS,
+ 27,
+ { 0x07, 0x40, 0x00, 0x16, 0x10, 0x42, 0x02, 0x56,
+ 0x56, 0x56, 0x86, 0x80, 0x03, 0x56, 0x56, 0x56,
+ 0x56, 0x56, 0x56, 0x56, 0x56, 0x56, 0x56, 0x56,
+ 0x56, 0x56, 0x00 }
+ },
+};
+
+static void test_pdtch(const struct test_macblock *tmb, int len)
{
- uint8_t result[len];
+ uint8_t l2[len], result[len];
ubit_t bursts_u[116 * 4];
sbit_t bursts_s[116 * 4];
int n_errors, n_bits_total;
int rc;
/* Zero the not coded tail bits */
+ memcpy(l2, tmb->l2, len);
switch (len) {
case 34:
case 54:
@@ -294,7 +409,11 @@ static void test_pdtch(uint8_t *l2, int len)
/* Encode L2 message */
printf("Encoding: %s\n", osmo_hexdump(l2, len));
- gsm0503_pdtch_encode(bursts_u, l2, len);
+ if (tmb->is_egprs)
+ rc = gsm0503_pdtch_egprs_encode(bursts_u, l2, len);
+ else
+ rc = gsm0503_pdtch_encode(bursts_u, l2, len);
+ CHECK_RC_OR_RET(rc == (int)tmb->exp_burst_bits, "encoding");
/* Prepare soft-bits */
osmo_ubit2sbit(bursts_s, bursts_u, 116 * 4);
@@ -303,13 +422,20 @@ static void test_pdtch(uint8_t *l2, int len)
dump_sbits((uint8_t *)bursts_s, 348);
/* Decode */
- rc = gsm0503_pdtch_decode(result, bursts_s, NULL,
- &n_errors, &n_bits_total);
+ if (tmb->is_egprs) {
+ /* gsm0503_pdtch_egprs_decode() is meant to decode EGPRS UL frames, so we cannot use it here */
+ rc = gsm0503_pdtch_egprs_decode(result, bursts_s, rc, NULL, &n_errors, &n_bits_total);
+ OSMO_ASSERT(rc == -EIO);
+ return;
+ } else {
+ rc = gsm0503_pdtch_decode(result, bursts_s, NULL, &n_errors, &n_bits_total);
+ }
+ CHECK_RC_OR_RET(rc == len, "decoding");
+
printf("Decoded: %s\n", osmo_hexdump(result, len));
printf("pdtch_decode: n_errors=%d n_bits_total=%d ber=%.2f\n",
n_errors, n_bits_total, (float)n_errors/n_bits_total);
- OSMO_ASSERT(rc == len);
OSMO_ASSERT(!memcmp(l2, result, len));
printf("\n");
@@ -330,19 +456,37 @@ uint8_t test_l2[][23] = {
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
};
-uint8_t test_macblock[][54] = {
- /* Random frame */
- { 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
- 0xd9, 0x6d, 0x7d, 0x62, 0x24, 0xc9, 0xd2, 0x92,
- 0xfa, 0x27, 0x5d, 0x71, 0x7a, 0x59, 0xa8, 0x42,
- 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
- 0xa3, 0xaf, 0x5f, 0xc6, 0x36, 0x43, 0x44, 0xab,
- 0xd9, 0x6d, 0x7d, 0x62, 0x24, 0xc9, 0xd2, 0x92,
- 0xfa, 0x27, 0x5d, 0x71, 0x7a, 0xa8 },
- /* jolly frame */
- { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
- 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
- 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
+/* 11-bit Access Burst soft-bits (payload only) from an EGPRS capable phone (BSIC 63) */
+static const sbit_t test_rach_11bit[6][36] = {
+ { 103, 109, -108, -110, 107, 108, -106, -120, -121,
+ -120, -105, 122, -104, -109, 108, 109, -109, -111,
+ 107, 111, -105, -119, -121, -104, 122, -120, 121,
+ -99, -121, -120, -122, -106, 109, 109, -108, -111 },
+
+ { 103, 109, -109, -109, 106, 107, -106, -121, -121,
+ -120, -106, 121, -120, 117, -122, 101, 109, -122,
+ 120, -120, 101, 118, 120, 102, -125, 101, 110,
+ -120, 121, -101, -121, -118, -121, -106, 108, 121 },
+
+ { -121, -122, -104, 123, -104, -108, 122, -104, -121,
+ -121, -102, 124, -105, -110, 107, 109, -108, -109,
+ 121, -122, 101, 107, -121, 105, 108, -110, -107,
+ 124, -104, -109, 120, -122, 100, 122, 104, -123 },
+
+ { -122, -123, -103, 123, -105, -109, 122, -105, -121,
+ -120, -104, 122, -120, 121, -101, -122, -120, -120,
+ -119, -105, 120, -106, -108, 123, -104, -113, 105,
+ 122, 101, -122, 119, -122, 117, -121, 119, -122 },
+
+ { 105, 110, -109, -109, 107, 108, -108, -120, -120,
+ -121, -106, 121, -104, -107, 106, 108, -108, -108,
+ 108, 107, -105, -120, -122, -104, 122, -119, 121,
+ -103, -122, -118, -120, -106, 108, 108, -110, -111 },
+
+ { 120, -103, -123, -104, 119, -121, 100, 123, 106,
+ -109, -107, 121, -122, 118, -121, 103, 108, -122,
+ 120, -119, 121, -103, -121, -119, -121, -103, 124,
+ -106, -108, 122, -103, -106, 121, -120, 119, -121 },
};
uint8_t test_speech_fr[33];
@@ -353,8 +497,8 @@ int main(int argc, char **argv)
{
int i, len_l2, len_mb;
- len_l2 = sizeof(test_l2) / sizeof(test_l2[0]);
- len_mb = sizeof(test_macblock) / sizeof(test_macblock[0]);
+ len_l2 = ARRAY_SIZE(test_l2);
+ len_mb = ARRAY_SIZE(test_macblock);
for (i = 0; i < len_l2; i++)
test_xcch(test_l2[i]);
@@ -371,6 +515,10 @@ int main(int argc, char **argv)
test_rach_ext(0x1a, i);
}
+ for (i = 0; i < ARRAY_SIZE(test_rach_11bit); i++)
+ test_rach_11bit_sample(0x3f, test_rach_11bit[i]);
+ printf("\n");
+
for (i = 0; i < len_l2; i++)
test_sch(test_l2[i]);
@@ -396,10 +544,14 @@ int main(int argc, char **argv)
test_hr(test_l2[i], sizeof(test_l2[0]));
for (i = 0; i < len_mb; i++) {
- test_pdtch(test_macblock[i], 23);
- test_pdtch(test_macblock[i], 34);
- test_pdtch(test_macblock[i], 40);
- test_pdtch(test_macblock[i], 54);
+ if (test_macblock[i].is_egprs) {
+ test_pdtch(&test_macblock[i], test_macblock[i].l2_len);
+ } else {
+ test_pdtch(&test_macblock[i], 23);
+ test_pdtch(&test_macblock[i], 34);
+ test_pdtch(&test_macblock[i], 40);
+ test_pdtch(&test_macblock[i], 54);
+ }
}
printf("Success\n");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-18 01:38:46 +0000