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Diffstat (limited to 'tests/lib/ippool_test.c')
-rw-r--r-- | tests/lib/ippool_test.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/tests/lib/ippool_test.c b/tests/lib/ippool_test.c new file mode 100644 index 0000000..79e43e7 --- /dev/null +++ b/tests/lib/ippool_test.c @@ -0,0 +1,118 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <time.h> + +#include <osmocom/core/utils.h> +#include <osmocom/core/application.h> +#include <osmocom/core/logging.h> + +#include "../../lib/in46_addr.h" +#include "../../lib/ippool.h" +#include "../../lib/syserr.h" + + +static struct ippool_t *create_pool(const char *prefix_str, unsigned int flags) +{ + struct ippool_t *pool; + struct in46_prefix pfx; + size_t t; + int rc; + + /* dynamic-only v4 */ + + rc = ippool_aton(&pfx.addr, &t, prefix_str, flags); + OSMO_ASSERT(rc == 0); + pfx.prefixlen = t; + + rc = ippool_new(&pool, &pfx, NULL, flags); + OSMO_ASSERT(rc == 0); + + //ippool_printaddr(pool); + + return pool; +} + +static void test_pool_size(const char *pfx, unsigned int flags, unsigned int expected_size) +{ + struct ippool_t *pool; + struct ippoolm_t *member; + struct in46_addr addr; + int i, rc, n; + + printf("testing pool for prefix %s, flags=0x%x, expected_size=%u\n", pfx, flags, expected_size); + pool = create_pool(pfx, flags); + OSMO_ASSERT(pool->listsize == expected_size); + + memset(&addr, 0, sizeof(addr)); + addr.len = pool->member[0].addr.len; + + /* allocate all addresses */ + for (i = 0; i < expected_size; i++) { + member = NULL; + rc = ippool_newip(pool, &member, &addr, 0); + OSMO_ASSERT(rc == 0); + OSMO_ASSERT(member); + printf("allocated address %s\n", in46a_ntoa(&member->addr)); + } + /* allocate one more, expect that to fail */ + rc = ippool_newip(pool, &member, &addr, 0); + OSMO_ASSERT(rc < 0); + + /* release a (random) number N of (random) member address */ + n = rand() % pool->listsize; + for (i = 0; i < n; i++) { + int r; + /* chose a random index that is in use */ + do { + r = rand() % pool->listsize; + } while (!pool->member[r].inuse); + /* and free it... */ + rc = ippool_freeip(pool, &pool->member[r]); + OSMO_ASSERT(rc == 0); + } + + /* allocate all N previously released addresses */ + for (i = 0; i < n; i++) { + member = NULL; + rc = ippool_newip(pool, &member, &addr, 0); + OSMO_ASSERT(rc == 0); + OSMO_ASSERT(member); + } + + /* allocate one more, expect that to fail */ + rc = ippool_newip(pool, &member, &addr, 0); + OSMO_ASSERT(rc < 0); + + ippool_free(pool); +} + +static void test_pool_sizes(void) +{ + /* 255 addresses [0..254] */ + test_pool_size("192.168.23.0/24", 0, 255); + + /* 254 addresses [1..254] */ + test_pool_size("192.168.23.0/24", IPPOOL_NONETWORK, 254); + + /* 253 addresses [2..254] */ + test_pool_size("192.168.23.0/24", IPPOOL_NOGATEWAY, 253); + + /* 65533 addresses [3..255.254] */ + test_pool_size("192.168.0.0/16", IPPOOL_NOGATEWAY, 65533); + + /* 255 prefixes of /64 each */ + test_pool_size("2001:DB8::/56", 0, 255); +} + +int main(int argc, char **argv) +{ + osmo_init_logging(&log_info); + log_set_use_color(osmo_stderr_target, 0); + log_set_print_filename(osmo_stderr_target, 0); + + srand(time(NULL)); + + test_pool_sizes(); +} |