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Thu, 13 Mar 2025 00:02:07 -0700 (PDT) Received: from localhost ([157.82.205.237]) by smtp.gmail.com with UTF8SMTPSA id d2e1a72fcca58-737115293f6sm662442b3a.14.2025.03.13.00.02.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 13 Mar 2025 00:02:07 -0700 (PDT) From: Akihiko Odaki Date: Thu, 13 Mar 2025 16:01:10 +0900 Subject: [PATCH net-next v10 07/10] selftest: tun: Test vnet ioctls without device Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250313-rss-v10-7-3185d73a9af0@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 Ensure that vnet ioctls result in EBADFD when the underlying device is deleted. Signed-off-by: Akihiko Odaki Tested-by: Lei Yang --- tools/testing/selftests/net/tun.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/tools/testing/selftests/net/tun.c b/tools/testing/selftests/net/tun.c index fa83918b62d1..ad168c15c02d 100644 --- a/tools/testing/selftests/net/tun.c +++ b/tools/testing/selftests/net/tun.c @@ -159,4 +159,42 @@ TEST_F(tun, reattach_close_delete) { EXPECT_EQ(tun_delete(self->ifname), 0); } +FIXTURE(tun_deleted) +{ + char ifname[IFNAMSIZ]; + int fd; +}; + +FIXTURE_SETUP(tun_deleted) +{ + self->ifname[0] = 0; + self->fd = tun_alloc(self->ifname); + ASSERT_LE(0, self->fd); + + ASSERT_EQ(0, tun_delete(self->ifname)) + EXPECT_EQ(0, close(self->fd)); +} + +FIXTURE_TEARDOWN(tun_deleted) +{ + EXPECT_EQ(0, close(self->fd)); +} + +TEST_F(tun_deleted, getvnethdrsz) +{ + ASSERT_EQ(-1, ioctl(self->fd, TUNGETVNETHDRSZ)); + EXPECT_EQ(EBADFD, errno); +} + +TEST_F(tun_deleted, getvnethashcap) +{ + struct tun_vnet_hash cap; + int i = ioctl(self->fd, TUNGETVNETHASHCAP, &cap); + + if (i == -1 && errno == EBADFD) + SKIP(return, "TUNGETVNETHASHCAP not supported"); + + EXPECT_EQ(0, i); +} + TEST_HARNESS_MAIN