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gnrc_ipv6_nib: test: Force unspecified next hop addresses

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xnumad 2024-08-25 18:50:58 +02:00
parent 606a11b87d
commit 560d8c8ee5
1 changed files with 55 additions and 0 deletions
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55
tests/unittests/tests-gnrc_ipv6_nib/tests-gnrc_ipv6_nib-internal.c
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@ -1449,6 +1449,60 @@ static void test_nib_offl_alloc__success_overwrite_unspecified(void)
TEST_ASSERT(ipv6_addr_equal(&next_hop, &dst1->next_hop->ipv6));
}
/*
* Creates an off-link entry (to a next hop) and an on-link entry on the same interface.
* Then proceeds to delete the off-link entries to this next hop
* by only comparing the next hop, not checking the _PFX_ON_LINK flag.
*
* Expected results: Only off-link entries are deleted.
* On-link entries on the same interface are unaffected by the deletion.
*/
static void test_nib_offl_alloc__next_hop_indicates_whether_onl(void)
{
static const ipv6_addr_t next_hop = { .u64 = { { .u8 = LINK_LOCAL_PREFIX },
{ .u64 = TEST_UINT64 } } };
static const ipv6_addr_t pfx = { .u64 = { { .u8 = GLOBAL_PREFIX } } };
/*are in practice different prefixes actually*/
static const ipv6_addr_t *onl_pfx = &pfx;
static const ipv6_addr_t *offl_pfx = &pfx;
/* Add off-link entry */
_nib_offl_entry_t *dst1;
TEST_ASSERT_NOT_NULL((dst1 = _nib_ft_add(&next_hop, IFACE, offl_pfx, GLOBAL_PREFIX_LEN)));
/* Add on-link entry */
const unsigned pfx_len = GLOBAL_PREFIX_LEN; /* arbitrary */
/* (calls _nib_offl_alloc) */
_nib_offl_entry_t *dst;
TEST_ASSERT_NOT_NULL((dst = _nib_pl_add(IFACE, onl_pfx, pfx_len, UINT32_MAX, UINT32_MAX)));
TEST_ASSERT(ipv6_addr_is_unspecified(&dst->next_hop->ipv6));
/* would normally be set by PIO flags in Router Advertisement */
dst->flags |= _PFX_ON_LINK;
/* Delete all off-link entries to next_hop */
_nib_offl_entry_t *route = NULL;
while ((route = _nib_offl_iter(route))) {
if ((_nib_onl_get_if(route->next_hop) == IFACE) &&
(route->next_hop != NULL) &&
ipv6_addr_equal(&route->next_hop->ipv6, &next_hop) /*off-link, to this next hop*/
/*should not need to be checked for when next hop is already checked:*/
/*&& !(route->flags & _PFX_ON_LINK)*/
) {
_nib_ft_remove(route);
}
}
/* Expected result: On-link entries remain unaffected */
gnrc_ipv6_nib_pl_t prefix;
void *state = NULL;
TEST_ASSERT_MESSAGE(gnrc_ipv6_nib_pl_iter(IFACE, &state, &prefix),
"No prefix list entry found");
TEST_ASSERT_MESSAGE(ipv6_addr_match_prefix(onl_pfx, &prefix.pfx) >= pfx_len,
"Unexpected prefix configured");
}
/*
* Creates an off-link entry.
* Expected result: new entry should contain the given prefix, address and
@ -2069,6 +2123,7 @@ Test *tests_gnrc_ipv6_nib_internal_tests(void)
new_TestFixture(test_nib_offl_alloc__no_space_left_diff_next_hop_iface_pfx_pfx_len),
new_TestFixture(test_nib_offl_alloc__success_duplicate),
new_TestFixture(test_nib_offl_alloc__success_overwrite_unspecified),
new_TestFixture(test_nib_offl_alloc__next_hop_indicates_whether_onl),
new_TestFixture(test_nib_offl_alloc__success),
new_TestFixture(test_nib_offl_clear__uncleared),
new_TestFixture(test_nib_offl_clear__same_next_hop),