tests: add check for decoding netlink get and new flags

* tests/netlink_route.c (test_nlmsg_flags): New function, checks
decoding of NETLINK_ROUTE get and new flags.
(main): Use it.
* tests/netlink_sock_diag.c (test_nlmsg_flags): New function, checks
decoding of NETLINK_SOCK_DIAG get flags.
(main): Use it.
* tests/netlink_xfrm.c: (test_nlmsg_flags): New function, checks
decoding of NETLINK_XFRM get and new flags.
(main): Use it.

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/netlink_sock_diag.c b/tests/netlink_sock_diag.c
index 09eb2bfea..3fa0bb1fd 100644
--- a/tests/netlink_sock_diag.c
+++ b/tests/netlink_sock_diag.c
@@ -55,6 +55,23 @@ test_nlmsg_type(const int fd)
 	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
 }
 
+static void
+test_nlmsg_flags(const int fd)
+{
+	long rc;
+	struct nlmsghdr nlh = {
+		.nlmsg_len = sizeof(nlh),
+		.nlmsg_type = SOCK_DIAG_BY_FAMILY,
+		.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP,
+	};
+
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+	       ", flags=NLM_F_REQUEST|NLM_F_DUMP, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+}
+
 int main(void)
 {
 	skip_if_unavailable("/proc/self/fd/");
@@ -62,6 +79,7 @@ int main(void)
 	int fd = create_nl_socket(NETLINK_SOCK_DIAG);
 
 	test_nlmsg_type(fd);
+	test_nlmsg_flags(fd);
 
 	printf("+++ exited with 0 +++\n");