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tests: net: ip-addr: Add test case for an IPv4 LL address selection

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Add a test case verifying that a proper source IPv4 address and
interface is selected for a given LL destination address.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This commit is contained in:
Robert Lubos 2024-11-27 09:21:02 +01:00 • committed by Benjamin Cabé
commit 9db7f8d0a0
2 changed files with 70 additions and 2 deletions
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2
tests/net/ip-addr/prj.conf
View file

@ -13,6 +13,8 @@ CONFIG_NET_BUF_TX_COUNT=5
CONFIG_NET_LOG=y
CONFIG_ENTROPY_GENERATOR=y
CONFIG_TEST_RANDOM_GENERATOR=y
CONFIG_NET_IF_MAX_IPV4_COUNT=2
CONFIG_NET_IF_MAX_IPV6_COUNT=2
CONFIG_NET_IF_UNICAST_IPV6_ADDR_COUNT=3
CONFIG_NET_IF_UNICAST_IPV4_ADDR_COUNT=2
CONFIG_NET_IF_MCAST_IPV4_ADDR_COUNT=3

70
tests/net/ip-addr/src/main.c
View file

@ -35,6 +35,7 @@ LOG_MODULE_REGISTER(net_test, CONFIG_NET_IPV6_LOG_LEVEL);
#endif
static struct net_if *default_iface;
static struct net_if *second_iface;
#define TEST_BYTE_1(value, expected) \
do { \
@ -370,6 +371,57 @@ ZTEST(ip_addr_fn, test_ipv6_addresses)
"IPv6 removing address failed\n");
}
ZTEST(ip_addr_fn, test_ipv4_ll_address_select)
{
struct net_if *iface;
const struct in_addr *out;
struct net_if_addr *ifaddr;
struct in_addr lladdr4_1 = { { { 169, 254, 250, 1 } } };
struct in_addr lladdr4_2 = { { { 169, 254, 253, 1 } } };
struct in_addr netmask_1 = { { { 255, 255, 255, 0 } } };
struct in_addr netmask_2 = { { { 255, 255, 255, 252 } } };
struct in_addr dst4_1 = { { { 169, 254, 250, 2 } } };
struct in_addr dst4_2 = { { { 169, 254, 253, 2 } } };
ifaddr = net_if_ipv4_addr_add(default_iface, &lladdr4_1, NET_ADDR_MANUAL, 0);
zassert_not_null(ifaddr, "IPv4 interface address add failed");
zassert_true(net_ipv4_is_my_addr(&lladdr4_1),
"My IPv4 address check failed");
net_if_ipv4_set_netmask_by_addr(default_iface, &lladdr4_1, &netmask_1);
ifaddr = net_if_ipv4_addr_add(second_iface, &lladdr4_2, NET_ADDR_MANUAL, 0);
zassert_not_null(ifaddr, "IPv4 interface address add failed");
zassert_true(net_ipv4_is_my_addr(&lladdr4_2),
"My IPv4 address check failed");
net_if_ipv4_set_netmask_by_addr(second_iface, &lladdr4_2, &netmask_2);
out = net_if_ipv4_select_src_addr(NULL, &dst4_1);
iface = net_if_ipv4_select_src_iface(&dst4_1);
zassert_not_null(out, "IPv4 src addr selection failed, iface %p\n",
iface);
DBG("Selected IPv4 address %s, iface %p\n", net_sprint_ipv4_addr(out),
iface);
zassert_equal(out->s_addr, lladdr4_1.s_addr,
"IPv4 wrong src address selected, iface %p\n", iface);
zassert_equal_ptr(iface, default_iface, "Wrong iface selected");
out = net_if_ipv4_select_src_addr(NULL, &dst4_2);
iface = net_if_ipv4_select_src_iface(&dst4_2);
zassert_not_null(out, "IPv4 src addr selection failed, iface %p\n",
iface);
DBG("Selected IPv4 address %s, iface %p\n", net_sprint_ipv4_addr(out),
iface);
zassert_equal(out->s_addr, lladdr4_2.s_addr,
"IPv4 wrong src address selected, iface %p\n", iface);
zassert_equal_ptr(iface, second_iface, "Wrong iface selected");
}
ZTEST(ip_addr_fn, test_ipv4_addresses)
{
const struct in_addr *out;
@ -703,11 +755,25 @@ ZTEST(ip_addr_fn, test_private_ipv4_addresses)
}
void clear_addr4(struct net_if *iface, struct net_if_addr *addr, void *user_data)
{
addr->is_used = false;
}
static void test_before(void *f)
{
ARG_UNUSED(f);
net_if_ipv4_addr_foreach(default_iface, clear_addr4, NULL);
net_if_ipv4_addr_foreach(second_iface, clear_addr4, NULL);
}
void *test_setup(void)
{
default_iface = net_if_get_first_by_type(&NET_L2_GET_NAME(DUMMY));
default_iface = net_if_get_by_index(1);
second_iface = net_if_get_by_index(2);
return NULL;
}
ZTEST_SUITE(ip_addr_fn, NULL, test_setup, NULL, NULL, NULL);
ZTEST_SUITE(ip_addr_fn, NULL, test_setup, test_before, NULL, NULL);