diff mbox series

[v1,net,2/2] tcp: Add selftest for bind() and TIME_WAIT.

Message ID 20221226132753.44175-3-kuniyu@amazon.com (mailing list archive)
State Accepted
Commit 2c042e8e54efb2b8e25ed0cb28224e79948dc8ce
Delegated to: Netdev Maintainers
Headers show
Series tcp: Fix bhash2 and TIME_WAIT regression. | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net
netdev/fixes_present success Fixes tag present in non-next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 2 maintainers not CCed: linux-kselftest@vger.kernel.org shuah@kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning CHECK: spaces preferred around that '*' (ctx:WxV) WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? WARNING: line length of 85 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Kuniyuki Iwashima Dec. 26, 2022, 1:27 p.m. UTC 
bhash2 split the bind() validation logic into wildcard and non-wildcard
cases.  Let's add a test to catch future regression.

Before the previous patch:

  # ./bind_timewait
  TAP version 13
  1..2
  # Starting 2 tests from 3 test cases.
  #  RUN           bind_timewait.localhost.1 ...
  # bind_timewait.c:87:1:Expected ret (0) == -1 (-1)
  # 1: Test terminated by assertion
  #          FAIL  bind_timewait.localhost.1
  not ok 1 bind_timewait.localhost.1
  #  RUN           bind_timewait.addrany.1 ...
  #            OK  bind_timewait.addrany.1
  ok 2 bind_timewait.addrany.1
  # FAILED: 1 / 2 tests passed.
  # Totals: pass:1 fail:1 xfail:0 xpass:0 skip:0 error:0

After:

  # ./bind_timewait
  TAP version 13
  1..2
  # Starting 2 tests from 3 test cases.
  #  RUN           bind_timewait.localhost.1 ...
  #            OK  bind_timewait.localhost.1
  ok 1 bind_timewait.localhost.1
  #  RUN           bind_timewait.addrany.1 ...
  #            OK  bind_timewait.addrany.1
  ok 2 bind_timewait.addrany.1
  # PASSED: 2 / 2 tests passed.
  # Totals: pass:2 fail:0 xfail:0 xpass:0 skip:0 error:0

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
---
 tools/testing/selftests/net/.gitignore      |  1 +
 tools/testing/selftests/net/bind_timewait.c | 92 +++++++++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 tools/testing/selftests/net/bind_timewait.c

Comments

Joanne Koong Dec. 27, 2022, 6:08 p.m. UTC | #1 
On Mon, Dec 26, 2022 at 5:29 AM Kuniyuki Iwashima <kuniyu@amazon.com> wrote:
>
> bhash2 split the bind() validation logic into wildcard and non-wildcard
> cases.  Let's add a test to catch future regression.
>
> Before the previous patch:
>
>   # ./bind_timewait
>   TAP version 13
>   1..2
>   # Starting 2 tests from 3 test cases.
>   #  RUN           bind_timewait.localhost.1 ...
>   # bind_timewait.c:87:1:Expected ret (0) == -1 (-1)
>   # 1: Test terminated by assertion
>   #          FAIL  bind_timewait.localhost.1
>   not ok 1 bind_timewait.localhost.1
>   #  RUN           bind_timewait.addrany.1 ...
>   #            OK  bind_timewait.addrany.1
>   ok 2 bind_timewait.addrany.1
>   # FAILED: 1 / 2 tests passed.
>   # Totals: pass:1 fail:1 xfail:0 xpass:0 skip:0 error:0
>
> After:
>
>   # ./bind_timewait
>   TAP version 13
>   1..2
>   # Starting 2 tests from 3 test cases.
>   #  RUN           bind_timewait.localhost.1 ...
>   #            OK  bind_timewait.localhost.1
>   ok 1 bind_timewait.localhost.1
>   #  RUN           bind_timewait.addrany.1 ...
>   #            OK  bind_timewait.addrany.1
>   ok 2 bind_timewait.addrany.1
>   # PASSED: 2 / 2 tests passed.
>   # Totals: pass:2 fail:0 xfail:0 xpass:0 skip:0 error:0
>
> Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>

Acked-by: Joanne Koong <joannelkoong@gmail.com>

> ---
>  tools/testing/selftests/net/.gitignore      |  1 +
>  tools/testing/selftests/net/bind_timewait.c | 92 +++++++++++++++++++++
>  2 files changed, 93 insertions(+)
>  create mode 100644 tools/testing/selftests/net/bind_timewait.c
>
> diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore
> index 9cc84114741d..a6911cae368c 100644
> --- a/tools/testing/selftests/net/.gitignore
> +++ b/tools/testing/selftests/net/.gitignore
> @@ -1,5 +1,6 @@
>  # SPDX-License-Identifier: GPL-2.0-only
>  bind_bhash
> +bind_timewait
>  csum
>  cmsg_sender
>  diag_uid
> diff --git a/tools/testing/selftests/net/bind_timewait.c b/tools/testing/selftests/net/bind_timewait.c
> new file mode 100644
> index 000000000000..cb9fdf51ea59
> --- /dev/null
> +++ b/tools/testing/selftests/net/bind_timewait.c
> @@ -0,0 +1,92 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright Amazon.com Inc. or its affiliates. */
> +
> +#include <sys/socket.h>
> +#include <netinet/in.h>
> +
> +#include "../kselftest_harness.h"
> +
> +FIXTURE(bind_timewait)
> +{
> +       struct sockaddr_in addr;
> +       socklen_t addrlen;
> +};
> +
> +FIXTURE_VARIANT(bind_timewait)
> +{
> +       __u32 addr_const;
> +};
> +
> +FIXTURE_VARIANT_ADD(bind_timewait, localhost)
> +{
> +       .addr_const = INADDR_LOOPBACK
> +};
> +
> +FIXTURE_VARIANT_ADD(bind_timewait, addrany)
> +{
> +       .addr_const = INADDR_ANY
> +};
> +
> +FIXTURE_SETUP(bind_timewait)
> +{
> +       self->addr.sin_family = AF_INET;
> +       self->addr.sin_port = 0;
> +       self->addr.sin_addr.s_addr = htonl(variant->addr_const);
> +       self->addrlen = sizeof(self->addr);
> +}
> +
> +FIXTURE_TEARDOWN(bind_timewait)
> +{
> +}
> +
> +void create_timewait_socket(struct __test_metadata *_metadata,
> +                           FIXTURE_DATA(bind_timewait) *self)
> +{
> +       int server_fd, client_fd, child_fd, ret;
> +       struct sockaddr_in addr;
> +       socklen_t addrlen;
> +
> +       server_fd = socket(AF_INET, SOCK_STREAM, 0);
> +       ASSERT_GT(server_fd, 0);
> +
> +       ret = bind(server_fd, (struct sockaddr *)&self->addr, self->addrlen);
> +       ASSERT_EQ(ret, 0);
> +
> +       ret = listen(server_fd, 1);
> +       ASSERT_EQ(ret, 0);
> +
> +       ret = getsockname(server_fd, (struct sockaddr *)&self->addr, &self->addrlen);
> +       ASSERT_EQ(ret, 0);
> +
> +       client_fd = socket(AF_INET, SOCK_STREAM, 0);
> +       ASSERT_GT(client_fd, 0);
> +
> +       ret = connect(client_fd, (struct sockaddr *)&self->addr, self->addrlen);
> +       ASSERT_EQ(ret, 0);
> +
> +       addrlen = sizeof(addr);
> +       child_fd = accept(server_fd, (struct sockaddr *)&addr, &addrlen);
> +       ASSERT_GT(child_fd, 0);
> +
> +       close(child_fd);
> +       close(client_fd);
> +       close(server_fd);
> +}
> +
> +TEST_F(bind_timewait, 1)
> +{
> +       int fd, ret;
> +
> +       create_timewait_socket(_metadata, self);
> +
> +       fd = socket(AF_INET, SOCK_STREAM, 0);
> +       ASSERT_GT(fd, 0);
> +
> +       ret = bind(fd, (struct sockaddr *)&self->addr, self->addrlen);
> +       ASSERT_EQ(ret, -1);
> +       ASSERT_EQ(errno, EADDRINUSE);
> +
> +       close(fd);
> +}
> +
> +TEST_HARNESS_MAIN
> --
> 2.30.2
>
diff mbox series

Patch

diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore
index 9cc84114741d..a6911cae368c 100644
--- a/tools/testing/selftests/net/.gitignore
+++ b/tools/testing/selftests/net/.gitignore
@@ -1,5 +1,6 @@ 
 # SPDX-License-Identifier: GPL-2.0-only
 bind_bhash
+bind_timewait
 csum
 cmsg_sender
 diag_uid
diff --git a/tools/testing/selftests/net/bind_timewait.c b/tools/testing/selftests/net/bind_timewait.c
new file mode 100644
index 000000000000..cb9fdf51ea59
--- /dev/null
+++ b/tools/testing/selftests/net/bind_timewait.c
@@ -0,0 +1,92 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Amazon.com Inc. or its affiliates. */
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include "../kselftest_harness.h"
+
+FIXTURE(bind_timewait)
+{
+	struct sockaddr_in addr;
+	socklen_t addrlen;
+};
+
+FIXTURE_VARIANT(bind_timewait)
+{
+	__u32 addr_const;
+};
+
+FIXTURE_VARIANT_ADD(bind_timewait, localhost)
+{
+	.addr_const = INADDR_LOOPBACK
+};
+
+FIXTURE_VARIANT_ADD(bind_timewait, addrany)
+{
+	.addr_const = INADDR_ANY
+};
+
+FIXTURE_SETUP(bind_timewait)
+{
+	self->addr.sin_family = AF_INET;
+	self->addr.sin_port = 0;
+	self->addr.sin_addr.s_addr = htonl(variant->addr_const);
+	self->addrlen = sizeof(self->addr);
+}
+
+FIXTURE_TEARDOWN(bind_timewait)
+{
+}
+
+void create_timewait_socket(struct __test_metadata *_metadata,
+			    FIXTURE_DATA(bind_timewait) *self)
+{
+	int server_fd, client_fd, child_fd, ret;
+	struct sockaddr_in addr;
+	socklen_t addrlen;
+
+	server_fd = socket(AF_INET, SOCK_STREAM, 0);
+	ASSERT_GT(server_fd, 0);
+
+	ret = bind(server_fd, (struct sockaddr *)&self->addr, self->addrlen);
+	ASSERT_EQ(ret, 0);
+
+	ret = listen(server_fd, 1);
+	ASSERT_EQ(ret, 0);
+
+	ret = getsockname(server_fd, (struct sockaddr *)&self->addr, &self->addrlen);
+	ASSERT_EQ(ret, 0);
+
+	client_fd = socket(AF_INET, SOCK_STREAM, 0);
+	ASSERT_GT(client_fd, 0);
+
+	ret = connect(client_fd, (struct sockaddr *)&self->addr, self->addrlen);
+	ASSERT_EQ(ret, 0);
+
+	addrlen = sizeof(addr);
+	child_fd = accept(server_fd, (struct sockaddr *)&addr, &addrlen);
+	ASSERT_GT(child_fd, 0);
+
+	close(child_fd);
+	close(client_fd);
+	close(server_fd);
+}
+
+TEST_F(bind_timewait, 1)
+{
+	int fd, ret;
+
+	create_timewait_socket(_metadata, self);
+
+	fd = socket(AF_INET, SOCK_STREAM, 0);
+	ASSERT_GT(fd, 0);
+
+	ret = bind(fd, (struct sockaddr *)&self->addr, self->addrlen);
+	ASSERT_EQ(ret, -1);
+	ASSERT_EQ(errno, EADDRINUSE);
+
+	close(fd);
+}
+
+TEST_HARNESS_MAIN