Harald Welte | 57e5b94 | 2012-09-07 10:23:44 +0200 | [diff] [blame] | 1 | /* test routines for BSSGP flow control implementation in libosmogb |
| 2 | * (C) 2012 by Harald Welte <laforge@gnumonks.org> |
| 3 | */ |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <stdint.h> |
| 8 | #include <string.h> |
| 9 | #include <getopt.h> |
Holger Hans Peter Freyther | 5b6416a | 2013-09-16 14:13:25 +0200 | [diff] [blame] | 10 | #include <unistd.h> |
Harald Welte | 57e5b94 | 2012-09-07 10:23:44 +0200 | [diff] [blame] | 11 | |
Holger Hans Peter Freyther | c302eca | 2012-09-11 11:49:35 +0200 | [diff] [blame] | 12 | #include <osmocom/core/application.h> |
Harald Welte | 57e5b94 | 2012-09-07 10:23:44 +0200 | [diff] [blame] | 13 | #include <osmocom/core/utils.h> |
| 14 | #include <osmocom/core/logging.h> |
| 15 | #include <osmocom/core/talloc.h> |
| 16 | #include <osmocom/gprs/gprs_bssgp.h> |
| 17 | |
| 18 | static unsigned long in_ctr = 1; |
| 19 | static struct timeval tv_start; |
| 20 | |
| 21 | int get_centisec_diff(void) |
| 22 | { |
| 23 | struct timeval tv; |
| 24 | struct timeval now; |
| 25 | gettimeofday(&now, NULL); |
| 26 | |
| 27 | timersub(&now, &tv_start, &tv); |
| 28 | |
| 29 | return tv.tv_sec * 100 + tv.tv_usec/10000; |
| 30 | } |
| 31 | |
| 32 | /* round to deciseconds to make sure test output is always consistent */ |
| 33 | int round_decisec(int csec_in) |
| 34 | { |
| 35 | int tmp = csec_in / 10; |
| 36 | |
| 37 | return tmp * 10; |
| 38 | } |
| 39 | |
| 40 | static int fc_out_cb(struct bssgp_flow_control *fc, struct msgb *msg, |
| 41 | uint32_t llc_pdu_len, void *priv) |
| 42 | { |
| 43 | unsigned int csecs = get_centisec_diff(); |
| 44 | csecs = round_decisec(csecs); |
| 45 | |
| 46 | printf("%u: FC OUT Nr %lu\n", csecs, (unsigned long) msg); |
Holger Hans Peter Freyther | 5b6416a | 2013-09-16 14:13:25 +0200 | [diff] [blame] | 47 | return 0; |
Harald Welte | 57e5b94 | 2012-09-07 10:23:44 +0200 | [diff] [blame] | 48 | } |
| 49 | |
| 50 | static int fc_in(struct bssgp_flow_control *fc, unsigned int pdu_len) |
| 51 | { |
| 52 | unsigned int csecs = get_centisec_diff(); |
| 53 | csecs = round_decisec(csecs); |
| 54 | |
| 55 | printf("%u: FC IN Nr %lu\n", csecs, in_ctr); |
| 56 | bssgp_fc_in(fc, (struct msgb *) in_ctr, pdu_len, NULL); |
| 57 | in_ctr++; |
Holger Hans Peter Freyther | 5b6416a | 2013-09-16 14:13:25 +0200 | [diff] [blame] | 58 | return 0; |
Harald Welte | 57e5b94 | 2012-09-07 10:23:44 +0200 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | |
| 62 | static void test_fc(uint32_t bucket_size_max, uint32_t bucket_leak_rate, |
| 63 | uint32_t max_queue_depth, uint32_t pdu_len, |
| 64 | uint32_t pdu_count) |
| 65 | { |
| 66 | struct bssgp_flow_control *fc = talloc_zero(NULL, struct bssgp_flow_control); |
| 67 | int i; |
| 68 | |
| 69 | bssgp_fc_init(fc, bucket_size_max, bucket_leak_rate, max_queue_depth, |
| 70 | fc_out_cb); |
| 71 | |
| 72 | gettimeofday(&tv_start, NULL); |
| 73 | |
| 74 | for (i = 0; i < pdu_count; i++) { |
| 75 | fc_in(fc, pdu_len); |
| 76 | osmo_timers_check(); |
| 77 | osmo_timers_prepare(); |
| 78 | osmo_timers_update(); |
| 79 | } |
| 80 | |
| 81 | while (1) { |
| 82 | usleep(100000); |
| 83 | osmo_timers_check(); |
| 84 | osmo_timers_prepare(); |
| 85 | osmo_timers_update(); |
| 86 | |
| 87 | if (llist_empty(&fc->queue)) |
| 88 | break; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | static void help(void) |
| 93 | { |
| 94 | printf(" -h --help This help message\n"); |
| 95 | printf(" -s --bucket-size-max N Maximum size of bucket in octets\n"); |
| 96 | printf(" -r --bucket-leak-rate N Bucket leak rate in octets/sec\n"); |
| 97 | printf(" -d --max-queue-depth N Maximum length of pending PDU queue (msgs)\n"); |
| 98 | printf(" -l --pdu-length N Length of each PDU in octets\n"); |
| 99 | } |
| 100 | |
| 101 | int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) |
| 102 | { |
| 103 | return -1; |
| 104 | } |
| 105 | |
| 106 | static struct log_info info = {}; |
| 107 | |
| 108 | int main(int argc, char **argv) |
| 109 | { |
| 110 | uint32_t bucket_size_max = 100; /* octets */ |
| 111 | uint32_t bucket_leak_rate = 100; /* octets / second */ |
| 112 | uint32_t max_queue_depth = 5; /* messages */ |
| 113 | uint32_t pdu_length = 10; /* octets */ |
| 114 | uint32_t pdu_count = 20; /* messages */ |
| 115 | int c; |
| 116 | |
| 117 | static const struct option long_options[] = { |
| 118 | { "bucket-size-max", 1, 0, 's' }, |
| 119 | { "bucket-leak-rate", 1, 0, 'r' }, |
| 120 | { "max-queue-depth", 1, 0, 'd' }, |
| 121 | { "pdu-length", 1, 0, 'l' }, |
| 122 | { "pdu-count", 1, 0, 'c' }, |
| 123 | { "help", 0, 0, 'h' }, |
| 124 | { 0, 0, 0, 0 } |
| 125 | }; |
| 126 | |
| 127 | osmo_init_logging(&info); |
Holger Hans Peter Freyther | c302eca | 2012-09-11 11:49:35 +0200 | [diff] [blame] | 128 | log_set_use_color(osmo_stderr_target, 0); |
| 129 | log_set_print_filename(osmo_stderr_target, 0); |
Harald Welte | 57e5b94 | 2012-09-07 10:23:44 +0200 | [diff] [blame] | 130 | |
| 131 | while ((c = getopt_long(argc, argv, "s:r:d:l:c:", |
| 132 | long_options, NULL)) != -1) { |
| 133 | switch (c) { |
| 134 | case 's': |
| 135 | bucket_size_max = atoi(optarg); |
| 136 | break; |
| 137 | case 'r': |
| 138 | bucket_leak_rate = atoi(optarg); |
| 139 | break; |
| 140 | case 'd': |
| 141 | max_queue_depth = atoi(optarg); |
| 142 | break; |
| 143 | case 'l': |
| 144 | pdu_length = atoi(optarg); |
| 145 | break; |
| 146 | case 'c': |
| 147 | pdu_count = atoi(optarg); |
| 148 | break; |
| 149 | case 'h': |
| 150 | help(); |
| 151 | exit(EXIT_SUCCESS); |
| 152 | break; |
| 153 | default: |
| 154 | exit(EXIT_FAILURE); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | /* bucket leak rate less than 100 not supported! */ |
| 159 | if (bucket_leak_rate < 100) { |
| 160 | fprintf(stderr, "Bucket leak rate < 100 not supported!\n"); |
| 161 | exit(EXIT_FAILURE); |
| 162 | } |
| 163 | |
| 164 | printf("===== BSSGP flow-control test START\n"); |
| 165 | printf("size-max=%u oct, leak-rate=%u oct/s, " |
| 166 | "queue-len=%u msgs, pdu_len=%u oct, pdu_cnt=%u\n\n", bucket_size_max, |
| 167 | bucket_leak_rate, max_queue_depth, pdu_length, pdu_count); |
| 168 | test_fc(bucket_size_max, bucket_leak_rate, max_queue_depth, |
| 169 | pdu_length, pdu_count); |
| 170 | printf("===== BSSGP flow-control test END\n\n"); |
| 171 | |
| 172 | exit(EXIT_SUCCESS); |
| 173 | } |