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Message-ID: <7612fa90f613100e2b64c563cab3d7fdf36010db.1728802323.git.gur.stavi@huawei.com>
Date: Sun, 13 Oct 2024 10:15:27 +0300
From: Gur Stavi <gur.stavi@...wei.com>
To: Gur Stavi <gur.stavi@...wei.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, "David S.
Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub
Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Shuah Khan
<shuah@...nel.org>, Willem de Bruijn <willemdebruijn.kernel@...il.com>,
<linux-kselftest@...r.kernel.org>
Subject: [PATCH net-next v04 3/3] 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: Gur Stavi <gur.stavi@...wei.com>
---
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
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