Commit 7ec02a3a authored by Gur Stavi's avatar Gur Stavi Committed by Jakub Kicinski
Browse files

selftests: net/psock_fanout: unbound socket fanout 



Add a test that validates that an unbound packet socket cannot create/join
a fanout group.

Signed-off-by: default avatarGur Stavi <gur.stavi@huawei.com>
Reviewed-by: default avatarWillem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/7612fa90f613100e2b64c563cab3d7fdf36010db.1728802323.git.gur.stavi@huawei.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 9317e893

tools/testing/selftests/net/psock_fanout.c

+36 −0
Original line number Diff line number Diff line
@@ -279,6 +279,41 @@ static int sock_fanout_read(int fds[], char *rings[], const int expect[]) 
	return 0;

}



/* Test that creating/joining a fanout group fails for unbound socket without

 * a specified protocol

 */

static void test_unbound_fanout(void)

{

	int val, fd0, fd1, err;



	fprintf(stderr, "test: unbound fanout\n");

	fd0 = socket(PF_PACKET, SOCK_RAW, 0);

	if (fd0 < 0) {

		perror("socket packet");

		exit(1);

	}

	/* Try to create a new fanout group. Should fail. */

	val = (PACKET_FANOUT_HASH << 16) | 1;

	err = setsockopt(fd0, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val));

	if (!err) {

		fprintf(stderr, "ERROR: unbound socket fanout create\n");

		exit(1);

	}

	fd1 = sock_fanout_open(PACKET_FANOUT_HASH, 1);

	if (fd1 == -1) {

		fprintf(stderr, "ERROR: failed to open HASH socket\n");

		exit(1);

	}

	/* Try to join an existing fanout group. Should fail. */

	err = setsockopt(fd0, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val));

	if (!err) {

		fprintf(stderr, "ERROR: unbound socket fanout join\n");

		exit(1);

	}

	close(fd0);

	close(fd1);

}



/* Test illegal mode + flag combination */

static void test_control_single(void)

{
@@ -523,6 +558,7 @@ int main(int argc, char **argv) 
	const int expect_uniqueid[2][2] = { { 20, 20},  { 20, 20 } };

	int port_off = 2, tries = 20, ret;



	test_unbound_fanout();

	test_control_single();

	test_control_group(0);

	test_control_group(1);