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tests: net: pmtu: Add IP_MTU socket option tests

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Make sure we can use IP_MTU socket option from application.

Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
This commit is contained in:
Jukka Rissanen 2024-11-12 18:20:06 +02:00 • committed by Anas Nashif
commit 74fc23872d
2 changed files with 56 additions and 8 deletions
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3
tests/net/pmtu/prj.conf
View file

@ -21,3 +21,6 @@ CONFIG_NET_BUF_TX_COUNT=20
CONFIG_NET_MGMT=y CONFIG_NET_MGMT=y
CONFIG_NET_MGMT_EVENT=y CONFIG_NET_MGMT_EVENT=y
CONFIG_NET_SOCKETS=y CONFIG_NET_SOCKETS=y
CONFIG_ZVFS_OPEN_MAX=32
CONFIG_NET_MAX_CONTEXTS=32
CONFIG_NET_MAX_CONN=32

61
tests/net/pmtu/src/main.c
View file

@ -473,7 +473,9 @@ static void test_accept(int sock, int *new_sock, struct sockaddr *addr,
#if defined(CONFIG_NET_IPV6_PMTU) #if defined(CONFIG_NET_IPV6_PMTU)
static int get_v6_send_recv_sock(int *srv_sock, static int get_v6_send_recv_sock(int *srv_sock,
struct sockaddr_in6 *my_saddr, struct sockaddr_in6 *my_saddr,
struct sockaddr_in6 *peer_saddr) struct sockaddr_in6 *peer_saddr,
uint16_t my_port,
uint16_t peer_port)
{ {
struct sockaddr addr; struct sockaddr addr;
socklen_t addrlen = sizeof(addr); socklen_t addrlen = sizeof(addr);
@ -481,11 +483,11 @@ static int get_v6_send_recv_sock(int *srv_sock,
int c_sock; int c_sock;
int s_sock; int s_sock;
prepare_sock_tcp_v6(PEER_IPV6_ADDR, PEER_PORT, &s_sock, peer_saddr); prepare_sock_tcp_v6(PEER_IPV6_ADDR, peer_port, &s_sock, peer_saddr);
test_bind(s_sock, (struct sockaddr *)peer_saddr, sizeof(*peer_saddr)); test_bind(s_sock, (struct sockaddr *)peer_saddr, sizeof(*peer_saddr));
test_listen(s_sock); test_listen(s_sock);
prepare_sock_tcp_v6(MY_IPV6_ADDR, MY_PORT, &c_sock, my_saddr); prepare_sock_tcp_v6(MY_IPV6_ADDR, my_port, &c_sock, my_saddr);
test_bind(c_sock, (struct sockaddr *)my_saddr, sizeof(*my_saddr)); test_bind(c_sock, (struct sockaddr *)my_saddr, sizeof(*my_saddr));
test_connect(c_sock, (struct sockaddr *)peer_saddr, sizeof(*peer_saddr)); test_connect(c_sock, (struct sockaddr *)peer_saddr, sizeof(*peer_saddr));
@ -566,7 +568,8 @@ ZTEST(net_pmtu_test_suite, test_pmtu_05_ipv6_tcp)
dest_ipv6.sin6_family = AF_INET6; dest_ipv6.sin6_family = AF_INET6;
client_sock = get_v6_send_recv_sock(&server_sock, &c_saddr, &s_saddr); client_sock = get_v6_send_recv_sock(&server_sock, &c_saddr, &s_saddr,
MY_PORT, PEER_PORT);
zassert_true(client_sock >= 0, "Failed to create client socket"); zassert_true(client_sock >= 0, "Failed to create client socket");
/* Set initial MTU for the destination */ /* Set initial MTU for the destination */
@ -596,7 +599,9 @@ ZTEST(net_pmtu_test_suite, test_pmtu_05_ipv6_tcp)
#if defined(CONFIG_NET_IPV4_PMTU) #if defined(CONFIG_NET_IPV4_PMTU)
static int get_v4_send_recv_sock(int *srv_sock, static int get_v4_send_recv_sock(int *srv_sock,
struct sockaddr_in *my_saddr, struct sockaddr_in *my_saddr,
struct sockaddr_in *peer_saddr) struct sockaddr_in *peer_saddr,
uint16_t my_port,
uint16_t peer_port)
{ {
struct sockaddr addr; struct sockaddr addr;
socklen_t addrlen = sizeof(addr); socklen_t addrlen = sizeof(addr);
@ -604,11 +609,11 @@ static int get_v4_send_recv_sock(int *srv_sock,
int c_sock; int c_sock;
int s_sock; int s_sock;
prepare_sock_tcp_v4(PEER_IPV4_ADDR, PEER_PORT, &s_sock, peer_saddr); prepare_sock_tcp_v4(PEER_IPV4_ADDR, peer_port, &s_sock, peer_saddr);
test_bind(s_sock, (struct sockaddr *)peer_saddr, sizeof(*peer_saddr)); test_bind(s_sock, (struct sockaddr *)peer_saddr, sizeof(*peer_saddr));
test_listen(s_sock); test_listen(s_sock);
prepare_sock_tcp_v4(MY_IPV4_ADDR, MY_PORT, &c_sock, my_saddr); prepare_sock_tcp_v4(MY_IPV4_ADDR, my_port, &c_sock, my_saddr);
test_bind(c_sock, (struct sockaddr *)my_saddr, sizeof(*my_saddr)); test_bind(c_sock, (struct sockaddr *)my_saddr, sizeof(*my_saddr));
test_connect(c_sock, (struct sockaddr *)peer_saddr, sizeof(*peer_saddr)); test_connect(c_sock, (struct sockaddr *)peer_saddr, sizeof(*peer_saddr));
@ -689,7 +694,8 @@ ZTEST(net_pmtu_test_suite, test_pmtu_05_ipv4_tcp)
dest_ipv4.sin_family = AF_INET; dest_ipv4.sin_family = AF_INET;
client_sock = get_v4_send_recv_sock(&server_sock, &c_saddr, &s_saddr); client_sock = get_v4_send_recv_sock(&server_sock, &c_saddr, &s_saddr,
MY_PORT, PEER_PORT);
zassert_true(client_sock >= 0, "Failed to create client socket"); zassert_true(client_sock >= 0, "Failed to create client socket");
/* Set initial MTU for the destination */ /* Set initial MTU for the destination */
@ -772,4 +778,43 @@ ZTEST(net_pmtu_test_suite, test_pmtu_06_ipv6_event)
#endif /* CONFIG_NET_IPV6_PMTU */ #endif /* CONFIG_NET_IPV6_PMTU */
} }
ZTEST(net_pmtu_test_suite, test_pmtu_07_socket_api_ipv4)
{
#if defined(CONFIG_NET_IPV4_PMTU)
struct sockaddr_in s_saddr = { 0 }; /* peer */
struct sockaddr_in c_saddr = { 0 }; /* this host */
int ret, client_sock, server_sock;
size_t optlen;
int optval;
int err;
client_sock = get_v4_send_recv_sock(&server_sock, &c_saddr, &s_saddr,
MY_PORT + 1, PEER_PORT + 1);
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, 4096);
zassert_true(ret >= 0, "PMTU IPv4 MTU update failed (%d)", ret);
optval = 0; optlen = sizeof(int);
ret = zsock_getsockopt(client_sock, IPPROTO_IP, IP_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, 4096, "setsockopt mtu (%d)", optval);
optval = 0; optlen = sizeof(int);
ret = zsock_setsockopt(client_sock, IPPROTO_IP, IP_MTU, &optval, optlen);
err = -errno;
zexpect_equal(ret, -1, "setsockopt failed (%d)", err);
zexpect_equal(optlen, sizeof(int), "setsockopt optlen (%d)", optlen);
zexpect_equal(optval, 0, "setsockopt mtu (%d)", optval);
(void)zsock_close(client_sock);
(void)zsock_close(server_sock);
#else
ztest_test_skip();
#endif /* CONFIG_NET_IPV4_PMTU */
}
ZTEST_SUITE(net_pmtu_test_suite, NULL, test_setup, NULL, NULL, NULL); ZTEST_SUITE(net_pmtu_test_suite, NULL, test_setup, NULL, NULL, NULL);