Add a test that validates that an unbound packet socket cannot create/join
a fanout group.
Signed-off-by: Gur Stavi <gur.stavi@xxxxxxxxxx>
---
tools/testing/selftests/net/psock_fanout.c | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c
index acdfae8f8a9a..84c524357075 100644
--- a/tools/testing/selftests/net/psock_fanout.c
+++ b/tools/testing/selftests/net/psock_fanout.c
@@ -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);
--
2.45.2
