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tests: add unittest for state corruption in NC cache-out

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This commit is contained in:
Martine Lenders 2019-02-08 18:09:55 +01:00
parent 660440c1c2
commit 2451fb36f8
1 changed files with 35 additions and 0 deletions
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35
tests/unittests/tests-gnrc_ipv6_nib/tests-gnrc_ipv6_nib-internal.c
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@ -492,6 +492,40 @@ static void test_nib_nc_add__success_full_but_garbage_collectible(void)
}
}
/*
* Creates GNRC_IPV6_NIB_NUMOF neighbor cache entries with different IP
* addresses and a garbage-collectible AR state and then tries to add
* 3 more after removing two.
* Expected result: should not crash
*
* See https://github.com/RIOT-OS/RIOT/pull/10975
*/
static void test_nib_nc_add__cache_out_crash(void)
{
_nib_onl_entry_t *node1, *node2;
ipv6_addr_t addr = { .u64 = { { .u8 = GLOBAL_PREFIX },
{ .u64 = TEST_UINT64 } } };
for (int i = 0; i < GNRC_IPV6_NIB_NUMOF - 2; i++) {
TEST_ASSERT_NOT_NULL(_nib_nc_add(&addr, IFACE,
GNRC_IPV6_NIB_NC_INFO_NUD_STATE_STALE));
addr.u64[1].u64++;
}
TEST_ASSERT_NOT_NULL((node1 = _nib_nc_add(&addr, IFACE,
GNRC_IPV6_NIB_NC_INFO_NUD_STATE_STALE)));
addr.u64[1].u64++;
TEST_ASSERT_NOT_NULL((node2 = _nib_nc_add(&addr, IFACE,
GNRC_IPV6_NIB_NC_INFO_NUD_STATE_STALE)));
addr.u64[1].u64++;
_nib_nc_remove(node1);
_nib_nc_remove(node2);
for (int i = 0; i < 3; i++) {
TEST_ASSERT_NOT_NULL(_nib_nc_add(&addr, IFACE,
GNRC_IPV6_NIB_NC_INFO_NUD_STATE_STALE));
addr.u64[1].u64++;
}
}
/*
* Creates a neighbor cache entry and sets it reachable
* Expected result: node->info flags set to NUD_STATE_REACHABLE and NIB's event
@ -1935,6 +1969,7 @@ Test *tests_gnrc_ipv6_nib_internal_tests(void)
new_TestFixture(test_nib_nc_add__success_duplicate),
new_TestFixture(test_nib_nc_add__success),
new_TestFixture(test_nib_nc_add__success_full_but_garbage_collectible),
new_TestFixture(test_nib_nc_add__cache_out_crash),
new_TestFixture(test_nib_nc_remove__uncleared),
new_TestFixture(test_nib_nc_remove__cleared),
new_TestFixture(test_nib_nc_set_reachable__success),