#include #include #include #include #include #include #include #include #define ASSERT_FALSE(x) if (x) { printf("Should have returned false.\n"); abort(); } #define ASSERT_TRUE(x) if (!x) { printf("Should have returned true.\n"); abort(); } /** * GSM 04.64 8.4.2 Receipt of unacknowledged information */ static int nu_is_retransmission(uint16_t nu, uint16_t vur) { int ret = gprs_llc_is_retransmit(nu, vur); printf("N(U) = %d, V(UR) = %d => %s\n", nu, vur, ret == 1 ? "retransmit" : "new"); return ret; } static void test_8_4_2(void) { printf("Testing gprs_llc_is_retransmit.\n"); ASSERT_FALSE(nu_is_retransmission(0, 0)); ASSERT_TRUE (nu_is_retransmission(0, 1)); /* expect 1... check for retransmissions */ ASSERT_TRUE (nu_is_retransmission(0, 1)); ASSERT_TRUE (nu_is_retransmission(511, 1)); ASSERT_TRUE (nu_is_retransmission(483, 1)); ASSERT_TRUE (nu_is_retransmission(482, 1)); ASSERT_FALSE(nu_is_retransmission(481, 1)); /* expect 511... check for retransmissions */ ASSERT_FALSE(nu_is_retransmission(0, 240)); // ahead ASSERT_FALSE(nu_is_retransmission(0, 511)); // ahead ASSERT_FALSE(nu_is_retransmission(1, 511)); // ahead ASSERT_FALSE(nu_is_retransmission(511, 511)); // same ASSERT_TRUE (nu_is_retransmission(510, 511)); // behind ASSERT_TRUE (nu_is_retransmission(481, 511)); // behind ASSERT_FALSE(nu_is_retransmission(479, 511)); // wrapped } /* GSM 04.08, 10.5.7.3 GPRS Timer */ static int gprs_tmr_to_secs(uint8_t tmr) { switch (tmr & GPRS_TMR_UNIT_MASK) { case GPRS_TMR_2SECONDS: return 2 * (tmr & GPRS_TMR_FACT_MASK); default: case GPRS_TMR_MINUTE: return 60 * (tmr & GPRS_TMR_FACT_MASK); case GPRS_TMR_6MINUTE: return 360 * (tmr & GPRS_TMR_FACT_MASK); case GPRS_TMR_DEACTIVATED: return -1; } } static void test_gprs_timer_enc_dec(void) { int i, u, secs, tmr; const int upper_secs_test_limit = 12000; int dec_secs, last_dec_secs = -1; printf("Test GPRS timer decoding/encoding\n"); /* Check gprs_tmr_to_secs with all 256 encoded values */ for (u = 0; u <= GPRS_TMR_DEACTIVATED; u += 32) { fprintf(stderr, "Testing decoding with timer value unit %u\n", u / 32); for (i = 0; i < 32; i++) { switch (u) { case GPRS_TMR_2SECONDS: OSMO_ASSERT(gprs_tmr_to_secs(u + i) == 2 * i); break; default: case GPRS_TMR_MINUTE: OSMO_ASSERT(gprs_tmr_to_secs(u + i) == 60 * i); break; case GPRS_TMR_6MINUTE: OSMO_ASSERT(gprs_tmr_to_secs(u + i) == 360 * i); break; case GPRS_TMR_DEACTIVATED: OSMO_ASSERT(gprs_tmr_to_secs(u + i) == -1); break; } OSMO_ASSERT(gprs_tmr_to_secs(u + i) < upper_secs_test_limit); } } /* Check gprs_secs_to_tmr_floor for secs that can exactly be * represented as GPRS timer values */ for (i = 0; i < GPRS_TMR_DEACTIVATED; i++) { int j; secs = gprs_tmr_to_secs(i); tmr = gprs_secs_to_tmr_floor(secs); OSMO_ASSERT(secs == gprs_tmr_to_secs(tmr)); /* Check that the highest resolution is used */ for (j = 0; j < tmr; j++) OSMO_ASSERT(secs != gprs_tmr_to_secs(j)); } OSMO_ASSERT(GPRS_TMR_DEACTIVATED == gprs_secs_to_tmr_floor(-1)); /* Check properties of gprs_secs_to_tmr_floor */ for (secs = 0; secs <= upper_secs_test_limit; secs++) { int tmr = gprs_secs_to_tmr_floor(secs); int delta_secs = gprs_tmr_to_secs((tmr & ~0x1f) | 1); dec_secs = gprs_tmr_to_secs(tmr); /* Check floor */ OSMO_ASSERT(dec_secs <= secs); /* Check monotonicity */ OSMO_ASSERT(dec_secs >= last_dec_secs); /* Check max distance (<= resolution) */ OSMO_ASSERT(dec_secs - last_dec_secs <= delta_secs); last_dec_secs = dec_secs; } } const struct log_info_cat default_categories[] = { [DGPRS] = { .name = "DGPRS", .description = "GPRS Packet Service", .enabled = 0, .loglevel = LOGL_DEBUG, }, }; static struct log_info info = { .cat = default_categories, .num_cat = ARRAY_SIZE(default_categories), }; int main(int argc, char **argv) { void *ctx = talloc_named_const(NULL, 0, "gprs_test"); osmo_init_logging2(ctx, &info); test_8_4_2(); test_gprs_timer_enc_dec(); printf("Done.\n"); return EXIT_SUCCESS; }