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sys/net/ipv6: add ipv6_addr_init() helper function

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Setting a compile-time const IP address can be a bit cumbersome.
Add a helper function to easy the process.
This commit is contained in:
Benjamin Valentin 2022-03-04 15:34:15 +01:00
parent 5bf52118ba
commit 91ad8ec403
2 changed files with 27 additions and 0 deletions
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13
sys/include/net/ipv6/addr.h
View File

@ -531,6 +531,19 @@ uint8_t ipv6_addr_match_prefix(const ipv6_addr_t *a, const ipv6_addr_t *b);
*/
void ipv6_addr_init_prefix(ipv6_addr_t *out, const ipv6_addr_t *prefix, uint8_t bits);
/**
* @brief Sets IPv6 address @p out with a given prefix and interface ID
*
* @param[out] out Address to initialize
* @param[in] prefix Prefix in host byte order
* @param[in] iid Interface ID in host byte order
*/
static inline void ipv6_addr_init(ipv6_addr_t *out, uint64_t prefix, uint64_t iid)
{
out->u64[0] = byteorder_htonll(prefix);
out->u64[1] = byteorder_htonll(iid);
}
/**
* @brief Sets the last @p bits of IPv6 address @p out to @p iid.
* Leading bits of @p out stay untouched.

14
tests/unittests/tests-ipv6_addr/tests-ipv6_addr.c
View File

@ -552,6 +552,19 @@ static void test_ipv6_addr_match_prefix_same_pointer(void)
TEST_ASSERT_EQUAL_INT(128, ipv6_addr_match_prefix(&a, &a));
}
static void test_ipv6_addr_init(void)
{
ipv6_addr_t a = { {
0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01
},
};
ipv6_addr_t b;
ipv6_addr_init(&b, 0xff02000000000000ULL, 0x1);
TEST_ASSERT_EQUAL_INT(true, ipv6_addr_equal(&a, &b));
}
static void test_ipv6_addr_init_prefix(void)
{
ipv6_addr_t a = { {
@ -1129,6 +1142,7 @@ Test *tests_ipv6_addr_tests(void)
new_TestFixture(test_ipv6_addr_match_prefix_match_127),
new_TestFixture(test_ipv6_addr_match_prefix_match_128),
new_TestFixture(test_ipv6_addr_match_prefix_same_pointer),
new_TestFixture(test_ipv6_addr_init),
new_TestFixture(test_ipv6_addr_init_prefix),
new_TestFixture(test_ipv6_addr_init_iid),
new_TestFixture(test_ipv6_addr_set_unspecified),