Holger Hans Peter Freyther | 6721a08 | 2011-06-23 17:53:27 -0400 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <inttypes.h> |
| 4 | |
| 5 | #include <openbsc/gprs_llc.h> |
| 6 | |
| 7 | #define ASSERT_FALSE(x) if (x) { printf("Should have returned false.\n"); abort(); } |
| 8 | #define ASSERT_TRUE(x) if (!x) { printf("Should have returned true.\n"); abort(); } |
| 9 | |
| 10 | /** |
| 11 | * GSM 04.64 8.4.2 Receipt of unacknowledged information |
| 12 | */ |
| 13 | static int nu_is_retransmission(uint16_t nu, uint16_t vur) |
| 14 | { |
| 15 | int ret = gprs_llc_is_retransmit(nu, vur); |
| 16 | printf("N(U) = %d, V(UR) = %d => %s\n", nu, vur, |
| 17 | ret == 1 ? "retransmit" : "new"); |
| 18 | return ret; |
| 19 | } |
| 20 | |
| 21 | static void test_8_4_2() |
| 22 | { |
| 23 | printf("Testing gprs_llc_is_retransmit.\n"); |
| 24 | |
| 25 | ASSERT_FALSE(nu_is_retransmission(0, 0)); |
| 26 | ASSERT_TRUE (nu_is_retransmission(0, 1)); |
| 27 | |
| 28 | /* expect 1... check for retransmissions */ |
| 29 | ASSERT_TRUE (nu_is_retransmission(0, 1)); |
| 30 | ASSERT_TRUE (nu_is_retransmission(511, 1)); |
| 31 | ASSERT_TRUE (nu_is_retransmission(483, 1)); |
| 32 | ASSERT_TRUE (nu_is_retransmission(482, 1)); |
| 33 | ASSERT_FALSE(nu_is_retransmission(481, 1)); |
| 34 | |
| 35 | /* expect 511... check for retransmissions */ |
| 36 | ASSERT_FALSE(nu_is_retransmission(0, 240)); // ahead |
| 37 | ASSERT_FALSE(nu_is_retransmission(0, 511)); // ahead |
| 38 | ASSERT_FALSE(nu_is_retransmission(1, 511)); // ahead |
| 39 | ASSERT_FALSE(nu_is_retransmission(511, 511)); // same |
| 40 | ASSERT_TRUE (nu_is_retransmission(510, 511)); // behind |
| 41 | ASSERT_TRUE (nu_is_retransmission(481, 511)); // behind |
| 42 | ASSERT_FALSE(nu_is_retransmission(479, 511)); // wrapped |
| 43 | } |
| 44 | |
| 45 | int main(int argc, char **argv) |
| 46 | { |
| 47 | test_8_4_2(); |
| 48 | |
| 49 | printf("Done.\n"); |
| 50 | return EXIT_SUCCESS; |
| 51 | } |