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tests: net: pmtu: Add IPV6_MTU socket option tests

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Make sure we can use IPV6_MTU socket option from application.

Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
This commit is contained in:
Jukka Rissanen 2024-11-13 09:28:02 +02:00 • committed by Anas Nashif
commit 3d39cbd24d
1 changed files with 46 additions and 0 deletions
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46
tests/net/pmtu/src/main.c
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@ -817,4 +817,50 @@ ZTEST(net_pmtu_test_suite, test_pmtu_07_socket_api_ipv4)
#endif /* CONFIG_NET_IPV4_PMTU */
}
ZTEST(net_pmtu_test_suite, test_pmtu_08_socket_api_ipv6)
{
#if defined(CONFIG_NET_IPV6_PMTU)
struct sockaddr_in6 s_saddr = { 0 }; /* peer */
struct sockaddr_in6 c_saddr = { 0 }; /* this host */
int ret, client_sock, server_sock;
size_t optlen;
int optval;
int err;
client_sock = get_v6_send_recv_sock(&server_sock, &c_saddr, &s_saddr,
MY_PORT + 2, PEER_PORT + 2);
zassert_true(client_sock >= 0, "Failed to create client socket");
/* Set initial MTU for the destination */
ret = net_pmtu_update_mtu((struct sockaddr *)&c_saddr, 2048);
zassert_true(ret >= 0, "PMTU IPv6 MTU update failed (%d)", ret);
optval = 0; optlen = sizeof(int);
ret = zsock_getsockopt(client_sock, IPPROTO_IPV6, IPV6_MTU, &optval, &optlen);
err = -errno;
zexpect_equal(ret, 0, "getsockopt failed (%d)", err);
zexpect_equal(optlen, sizeof(int), "getsockopt optlen (%d)", optlen);
zexpect_equal(optval, 2048, "getsockopt mtu (%d)", optval);
optval = 1500; optlen = sizeof(int);
ret = zsock_setsockopt(client_sock, IPPROTO_IPV6, IPV6_MTU, &optval, optlen);
err = -errno;
zexpect_equal(ret, 0, "setsockopt failed (%d)", err);
zexpect_equal(optlen, sizeof(int), "setsockopt optlen (%d)", optlen);
zexpect_equal(optval, 1500, "setsockopt mtu (%d)", optval);
optval = 0; optlen = sizeof(int);
ret = zsock_getsockopt(client_sock, IPPROTO_IPV6, IPV6_MTU, &optval, &optlen);
err = -errno;
zexpect_equal(ret, 0, "getsockopt failed (%d)", err);
zexpect_equal(optlen, sizeof(int), "getsockopt optlen (%d)", optlen);
zexpect_equal(optval, 1500, "getsockopt mtu (%d)", optval);
(void)zsock_close(client_sock);
(void)zsock_close(server_sock);
#else
ztest_test_skip();
#endif /* CONFIG_NET_IPV6_PMTU */
}
ZTEST_SUITE(net_pmtu_test_suite, NULL, test_setup, NULL, NULL, NULL);