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Thu, 13 Mar 2025 00:02:20 -0700 (PDT) From: Akihiko Odaki Date: Thu, 13 Mar 2025 16:01:12 +0900 Subject: [PATCH net-next v10 09/10] selftest: tap: Add tests for virtio-net ioctls Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250313-rss-v10-9-3185d73a9af0@daynix.com> References: <20250313-rss-v10-0-3185d73a9af0@daynix.com> In-Reply-To: <20250313-rss-v10-0-3185d73a9af0@daynix.com> To: Jonathan Corbet , Willem de Bruijn , Jason Wang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Xuan Zhuo , Shuah Khan , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-kselftest@vger.kernel.org, Yuri Benditovich , Andrew Melnychenko , Stephen Hemminger , gur.stavi@huawei.com, Lei Yang , Simon Horman , Akihiko Odaki X-Mailer: b4 0.15-dev-edae6 They only test the ioctls are wired up to the implementation common with tun as it is already tested for tun. Signed-off-by: Akihiko Odaki --- tools/testing/selftests/net/tap.c | 97 +++++++++++++++++++++++++++++++++++= +++- 1 file changed, 95 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/tap.c b/tools/testing/selftests/ne= t/tap.c index 247c3b3ac1c9..fbd38b08fdfa 100644 --- a/tools/testing/selftests/net/tap.c +++ b/tools/testing/selftests/net/tap.c @@ -363,6 +363,7 @@ size_t build_test_packet_crash_tap_invalid_eth_proto(ui= nt8_t *buf, FIXTURE(tap) { int fd; + bool deleted; }; =20 FIXTURE_SETUP(tap) @@ -387,8 +388,10 @@ FIXTURE_TEARDOWN(tap) if (self->fd !=3D -1) close(self->fd); =20 - ret =3D dev_delete(param_dev_tap_name); - EXPECT_EQ(ret, 0); + if (!self->deleted) { + ret =3D dev_delete(param_dev_tap_name); + EXPECT_EQ(ret, 0); + } =20 ret =3D dev_delete(param_dev_dummy_name); EXPECT_EQ(ret, 0); @@ -431,4 +434,94 @@ TEST_F(tap, test_packet_crash_tap_invalid_eth_proto) ASSERT_EQ(errno, EINVAL); } =20 +TEST_F(tap, test_vnethdrsz) +{ + int sz =3D sizeof(struct virtio_net_hdr_v1_hash); + + ASSERT_FALSE(dev_delete(param_dev_tap_name)); + self->deleted =3D true; + + ASSERT_FALSE(ioctl(self->fd, TUNSETVNETHDRSZ, &sz)); + sz =3D 0; + ASSERT_FALSE(ioctl(self->fd, TUNGETVNETHDRSZ, &sz)); + EXPECT_EQ(sizeof(struct virtio_net_hdr_v1_hash), sz); +} + +TEST_F(tap, test_vnetle) +{ + int le =3D 1; + + ASSERT_FALSE(dev_delete(param_dev_tap_name)); + self->deleted =3D true; + + ASSERT_FALSE(ioctl(self->fd, TUNSETVNETLE, &le)); + le =3D 0; + ASSERT_FALSE(ioctl(self->fd, TUNGETVNETLE, &le)); + EXPECT_EQ(1, le); +} + +TEST_F(tap, test_vnetbe) +{ + int be =3D 1; + int ret; + + ASSERT_FALSE(dev_delete(param_dev_tap_name)); + self->deleted =3D true; + + ret =3D ioctl(self->fd, TUNSETVNETBE, &be); + if (ret =3D=3D -1 && errno =3D=3D EINVAL) + SKIP(return, "TUNSETVNETBE not supported"); + + ASSERT_FALSE(ret); + be =3D 0; + ASSERT_FALSE(ioctl(self->fd, TUNGETVNETBE, &be)); + EXPECT_EQ(1, be); +} + +TEST_F(tap, test_getvnethashcap) +{ + static const struct tun_vnet_hash expected =3D { + .flags =3D TUN_VNET_HASH_REPORT | TUN_VNET_HASH_RSS, + .types =3D VIRTIO_NET_RSS_HASH_TYPE_IPv4 | + VIRTIO_NET_RSS_HASH_TYPE_TCPv4 | + VIRTIO_NET_RSS_HASH_TYPE_UDPv4 | + VIRTIO_NET_RSS_HASH_TYPE_IPv6 | + VIRTIO_NET_RSS_HASH_TYPE_TCPv6 | + VIRTIO_NET_RSS_HASH_TYPE_UDPv6 + }; + struct tun_vnet_hash seen; + int ret; + + ASSERT_FALSE(dev_delete(param_dev_tap_name)); + self->deleted =3D true; + + ret =3D ioctl(self->fd, TUNGETVNETHASHCAP, &seen); + + if (ret =3D=3D -1 && errno =3D=3D EINVAL) + SKIP(return, "TUNGETVNETHASHCAP not supported"); + + EXPECT_FALSE(ret); + EXPECT_FALSE(memcmp(&expected, &seen, sizeof(expected))); +} + +TEST_F(tap, test_setvnethash_alive) +{ + struct tun_vnet_hash hash =3D { .flags =3D 0 }; + + EXPECT_FALSE(ioctl(self->fd, TUNSETVNETHASH, &hash)); +} + +TEST_F(tap, test_setvnethash_deleted) +{ + ASSERT_FALSE(dev_delete(param_dev_tap_name)); + self->deleted =3D true; + + ASSERT_EQ(-1, ioctl(self->fd, TUNSETVNETHASH)); + + if (errno =3D=3D EINVAL) + SKIP(return, "TUNSETVNETHASH not supported"); + + EXPECT_EQ(EBADFD, errno); +} + TEST_HARNESS_MAIN --=20 2.48.1