diff mbox series

[net-next,v3,1/2] af_vsock: SOCK_SEQPACKET receive timeout test

Message ID a3f95812-d5bb-86a0-46a0-78935651e39e@sberdevices.ru (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series af_vsock: add two new tests for, SOCK_SEQPACKET | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -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 success CCed 3 of 3 maintainers
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/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning 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

Arseniy Krasnov March 17, 2022, 5:26 a.m. UTC
Test for receive timeout check: connection is established,
receiver sets timeout, but sender does nothing. Receiver's
'read()' call must return EAGAIN.

Signed-off-by: Krasnov Arseniy Vladimirovich <AVKrasnov@sberdevices.ru>
---
 v2 -> v3:
 1) Use 'fprintf()' instead of 'perror()' where 'errno' variable
    is not affected.
 2) Print 'read()' overhead.

 tools/testing/vsock/vsock_test.c | 84 ++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)

Comments

Stefano Garzarella March 17, 2022, 8:07 a.m. UTC | #1
On Thu, Mar 17, 2022 at 05:26:45AM +0000, Krasnov Arseniy Vladimirovich wrote:
>Test for receive timeout check: connection is established,
>receiver sets timeout, but sender does nothing. Receiver's
>'read()' call must return EAGAIN.
>
>Signed-off-by: Krasnov Arseniy Vladimirovich <AVKrasnov@sberdevices.ru>
>---
> v2 -> v3:
> 1) Use 'fprintf()' instead of 'perror()' where 'errno' variable
>    is not affected.
> 2) Print 'read()' overhead.
>
> tools/testing/vsock/vsock_test.c | 84 ++++++++++++++++++++++++++++++++
> 1 file changed, 84 insertions(+)
>
>diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
>index 2a3638c0a008..f5498de6751d 100644
>--- a/tools/testing/vsock/vsock_test.c
>+++ b/tools/testing/vsock/vsock_test.c
>@@ -16,6 +16,7 @@
> #include <linux/kernel.h>
> #include <sys/types.h>
> #include <sys/socket.h>
>+#include <time.h>
>
> #include "timeout.h"
> #include "control.h"
>@@ -391,6 +392,84 @@ static void test_seqpacket_msg_trunc_server(const struct test_opts *opts)
> 	close(fd);
> }
>
>+static time_t current_nsec(void)
>+{
>+	struct timespec ts;
>+
>+	if (clock_gettime(CLOCK_REALTIME, &ts)) {
>+		perror("clock_gettime(3) failed");
>+		exit(EXIT_FAILURE);
>+	}
>+
>+	return (ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
>+}
>+
>+#define RCVTIMEO_TIMEOUT_SEC 1
>+#define READ_OVERHEAD_NSEC 250000000 /* 0.25 sec */
>+
>+static void test_seqpacket_timeout_client(const struct test_opts *opts)
>+{
>+	int fd;
>+	struct timeval tv;
>+	char dummy;
>+	time_t read_enter_ns;
>+	time_t read_overhead_ns;
>+
>+	fd = vsock_seqpacket_connect(opts->peer_cid, 1234);
>+	if (fd < 0) {
>+		perror("connect");
>+		exit(EXIT_FAILURE);
>+	}
>+
>+	tv.tv_sec = RCVTIMEO_TIMEOUT_SEC;
>+	tv.tv_usec = 0;
>+
>+	if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv)) == -1) {
>+		perror("setsockopt 'SO_RCVTIMEO'");
>+		exit(EXIT_FAILURE);
>+	}
>+
>+	read_enter_ns = current_nsec();
>+
>+	if (errno != EAGAIN) {
>+		perror("EAGAIN expected");
>+		exit(EXIT_FAILURE);
>+	}

Should this check go after read()?

Indeed now the test fails on my environment with "EAGAIN expected" 
message.

The rest LGTM :-)

Stefano

>+
>+	if (read(fd, &dummy, sizeof(dummy)) != -1) {
>+		fprintf(stderr,
>+			"expected 'dummy' read(2) failure\n");
>+		exit(EXIT_FAILURE);
>+	}
>+
>+	read_overhead_ns = current_nsec() - read_enter_ns -
>+			1000000000ULL * RCVTIMEO_TIMEOUT_SEC;
>+
>+	if (read_overhead_ns > READ_OVERHEAD_NSEC) {
>+		fprintf(stderr,
>+			"too much time in read(2), %lu > %i ns\n",
>+			read_overhead_ns, READ_OVERHEAD_NSEC);
>+		exit(EXIT_FAILURE);
>+	}
>+
>+	control_writeln("WAITDONE");
>+	close(fd);
>+}
>+
>+static void test_seqpacket_timeout_server(const struct test_opts *opts)
>+{
>+	int fd;
>+
>+	fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL);
>+	if (fd < 0) {
>+		perror("accept");
>+		exit(EXIT_FAILURE);
>+	}
>+
>+	control_expectln("WAITDONE");
>+	close(fd);
>+}
>+
> static struct test_case test_cases[] = {
> 	{
> 		.name = "SOCK_STREAM connection reset",
>@@ -431,6 +510,11 @@ static struct test_case test_cases[] = {
> 		.run_client = test_seqpacket_msg_trunc_client,
> 		.run_server = test_seqpacket_msg_trunc_server,
> 	},
>+	{
>+		.name = "SOCK_SEQPACKET timeout",
>+		.run_client = test_seqpacket_timeout_client,
>+		.run_server = test_seqpacket_timeout_server,
>+	},
> 	{},
> };
>
>-- 
>2.25.1
Arseniy Krasnov March 17, 2022, 8:11 a.m. UTC | #2
On 17.03.2022 11:07, Stefano Garzarella wrote:
> On Thu, Mar 17, 2022 at 05:26:45AM +0000, Krasnov Arseniy Vladimirovich wrote:
>> Test for receive timeout check: connection is established,
>> receiver sets timeout, but sender does nothing. Receiver's
>> 'read()' call must return EAGAIN.
>>
>> Signed-off-by: Krasnov Arseniy Vladimirovich <AVKrasnov@sberdevices.ru>
>> ---
>> v2 -> v3:
>> 1) Use 'fprintf()' instead of 'perror()' where 'errno' variable
>>    is not affected.
>> 2) Print 'read()' overhead.
>>
>> tools/testing/vsock/vsock_test.c | 84 ++++++++++++++++++++++++++++++++
>> 1 file changed, 84 insertions(+)
>>
>> diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
>> index 2a3638c0a008..f5498de6751d 100644
>> --- a/tools/testing/vsock/vsock_test.c
>> +++ b/tools/testing/vsock/vsock_test.c
>> @@ -16,6 +16,7 @@
>> #include <linux/kernel.h>
>> #include <sys/types.h>
>> #include <sys/socket.h>
>> +#include <time.h>
>>
>> #include "timeout.h"
>> #include "control.h"
>> @@ -391,6 +392,84 @@ static void test_seqpacket_msg_trunc_server(const struct test_opts *opts)
>>     close(fd);
>> }
>>
>> +static time_t current_nsec(void)
>> +{
>> +    struct timespec ts;
>> +
>> +    if (clock_gettime(CLOCK_REALTIME, &ts)) {
>> +        perror("clock_gettime(3) failed");
>> +        exit(EXIT_FAILURE);
>> +    }
>> +
>> +    return (ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
>> +}
>> +
>> +#define RCVTIMEO_TIMEOUT_SEC 1
>> +#define READ_OVERHEAD_NSEC 250000000 /* 0.25 sec */
>> +
>> +static void test_seqpacket_timeout_client(const struct test_opts *opts)
>> +{
>> +    int fd;
>> +    struct timeval tv;
>> +    char dummy;
>> +    time_t read_enter_ns;
>> +    time_t read_overhead_ns;
>> +
>> +    fd = vsock_seqpacket_connect(opts->peer_cid, 1234);
>> +    if (fd < 0) {
>> +        perror("connect");
>> +        exit(EXIT_FAILURE);
>> +    }
>> +
>> +    tv.tv_sec = RCVTIMEO_TIMEOUT_SEC;
>> +    tv.tv_usec = 0;
>> +
>> +    if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv)) == -1) {
>> +        perror("setsockopt 'SO_RCVTIMEO'");
>> +        exit(EXIT_FAILURE);
>> +    }
>> +
>> +    read_enter_ns = current_nsec();
>> +
>> +    if (errno != EAGAIN) {
>> +        perror("EAGAIN expected");
>> +        exit(EXIT_FAILURE);
>> +    }
> 
> Should this check go after read()?
> 
> Indeed now the test fails on my environment with "EAGAIN expected" message.
> 
> The rest LGTM :-)

Oops, sorry :) 

> 
> Stefano
> 
>> +
>> +    if (read(fd, &dummy, sizeof(dummy)) != -1) {
>> +        fprintf(stderr,
>> +            "expected 'dummy' read(2) failure\n");
>> +        exit(EXIT_FAILURE);
>> +    }
>> +
>> +    read_overhead_ns = current_nsec() - read_enter_ns -
>> +            1000000000ULL * RCVTIMEO_TIMEOUT_SEC;
>> +
>> +    if (read_overhead_ns > READ_OVERHEAD_NSEC) {
>> +        fprintf(stderr,
>> +            "too much time in read(2), %lu > %i ns\n",
>> +            read_overhead_ns, READ_OVERHEAD_NSEC);
>> +        exit(EXIT_FAILURE);
>> +    }
>> +
>> +    control_writeln("WAITDONE");
>> +    close(fd);
>> +}
>> +
>> +static void test_seqpacket_timeout_server(const struct test_opts *opts)
>> +{
>> +    int fd;
>> +
>> +    fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL);
>> +    if (fd < 0) {
>> +        perror("accept");
>> +        exit(EXIT_FAILURE);
>> +    }
>> +
>> +    control_expectln("WAITDONE");
>> +    close(fd);
>> +}
>> +
>> static struct test_case test_cases[] = {
>>     {
>>         .name = "SOCK_STREAM connection reset",
>> @@ -431,6 +510,11 @@ static struct test_case test_cases[] = {
>>         .run_client = test_seqpacket_msg_trunc_client,
>>         .run_server = test_seqpacket_msg_trunc_server,
>>     },
>> +    {
>> +        .name = "SOCK_SEQPACKET timeout",
>> +        .run_client = test_seqpacket_timeout_client,
>> +        .run_server = test_seqpacket_timeout_server,
>> +    },
>>     {},
>> };
>>
>> -- 
>> 2.25.1
>
diff mbox series

Patch

diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 2a3638c0a008..f5498de6751d 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -16,6 +16,7 @@ 
 #include <linux/kernel.h>
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <time.h>
 
 #include "timeout.h"
 #include "control.h"
@@ -391,6 +392,84 @@  static void test_seqpacket_msg_trunc_server(const struct test_opts *opts)
 	close(fd);
 }
 
+static time_t current_nsec(void)
+{
+	struct timespec ts;
+
+	if (clock_gettime(CLOCK_REALTIME, &ts)) {
+		perror("clock_gettime(3) failed");
+		exit(EXIT_FAILURE);
+	}
+
+	return (ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
+}
+
+#define RCVTIMEO_TIMEOUT_SEC 1
+#define READ_OVERHEAD_NSEC 250000000 /* 0.25 sec */
+
+static void test_seqpacket_timeout_client(const struct test_opts *opts)
+{
+	int fd;
+	struct timeval tv;
+	char dummy;
+	time_t read_enter_ns;
+	time_t read_overhead_ns;
+
+	fd = vsock_seqpacket_connect(opts->peer_cid, 1234);
+	if (fd < 0) {
+		perror("connect");
+		exit(EXIT_FAILURE);
+	}
+
+	tv.tv_sec = RCVTIMEO_TIMEOUT_SEC;
+	tv.tv_usec = 0;
+
+	if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv)) == -1) {
+		perror("setsockopt 'SO_RCVTIMEO'");
+		exit(EXIT_FAILURE);
+	}
+
+	read_enter_ns = current_nsec();
+
+	if (errno != EAGAIN) {
+		perror("EAGAIN expected");
+		exit(EXIT_FAILURE);
+	}
+
+	if (read(fd, &dummy, sizeof(dummy)) != -1) {
+		fprintf(stderr,
+			"expected 'dummy' read(2) failure\n");
+		exit(EXIT_FAILURE);
+	}
+
+	read_overhead_ns = current_nsec() - read_enter_ns -
+			1000000000ULL * RCVTIMEO_TIMEOUT_SEC;
+
+	if (read_overhead_ns > READ_OVERHEAD_NSEC) {
+		fprintf(stderr,
+			"too much time in read(2), %lu > %i ns\n",
+			read_overhead_ns, READ_OVERHEAD_NSEC);
+		exit(EXIT_FAILURE);
+	}
+
+	control_writeln("WAITDONE");
+	close(fd);
+}
+
+static void test_seqpacket_timeout_server(const struct test_opts *opts)
+{
+	int fd;
+
+	fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL);
+	if (fd < 0) {
+		perror("accept");
+		exit(EXIT_FAILURE);
+	}
+
+	control_expectln("WAITDONE");
+	close(fd);
+}
+
 static struct test_case test_cases[] = {
 	{
 		.name = "SOCK_STREAM connection reset",
@@ -431,6 +510,11 @@  static struct test_case test_cases[] = {
 		.run_client = test_seqpacket_msg_trunc_client,
 		.run_server = test_seqpacket_msg_trunc_server,
 	},
+	{
+		.name = "SOCK_SEQPACKET timeout",
+		.run_client = test_seqpacket_timeout_client,
+		.run_server = test_seqpacket_timeout_server,
+	},
 	{},
 };