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Date: Fri, 15 Sep 2023 14:14:49 +0200
From: Stefano Garzarella <sgarzare@...hat.com>
To: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
Stefano Garzarella <sgarzare@...hat.com>,
Arseniy Krasnov <avkrasnov@...utedevices.com>,
virtualization@...ts.linux-foundation.org,
oxffffaa@...il.com,
Bobby Eshleman <bobby.eshleman@...edance.com>
Subject: [PATCH net-next 2/5] vsock/test: use recv_buf() in vsock_test.c
We have a very common pattern used in vsock_test that we can
now replace with the new recv_buf().
This allows us to reuse the code we already had to check the
actual return value and wait for all bytes to be received with
an appropriate timeout.
Signed-off-by: Stefano Garzarella <sgarzare@...hat.com>
---
tools/testing/vsock/vsock_test.c | 104 +++++--------------------------
1 file changed, 17 insertions(+), 87 deletions(-)
diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 90718c2fd4ea..d1dcbaeb477a 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -301,7 +301,6 @@ static void test_msg_peek_server(const struct test_opts *opts,
unsigned char buf_half[MSG_PEEK_BUF_LEN / 2];
unsigned char buf_normal[MSG_PEEK_BUF_LEN];
unsigned char buf_peek[MSG_PEEK_BUF_LEN];
- ssize_t res;
int fd;
if (seqpacket)
@@ -315,34 +314,16 @@ static void test_msg_peek_server(const struct test_opts *opts,
}
/* Peek from empty socket. */
- res = recv(fd, buf_peek, sizeof(buf_peek), MSG_PEEK | MSG_DONTWAIT);
- if (res != -1) {
- fprintf(stderr, "expected recv(2) failure, got %zi\n", res);
- exit(EXIT_FAILURE);
- }
-
- if (errno != EAGAIN) {
- perror("EAGAIN expected");
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf_peek, sizeof(buf_peek), MSG_PEEK | MSG_DONTWAIT,
+ -EAGAIN);
control_writeln("SRVREADY");
/* Peek part of data. */
- res = recv(fd, buf_half, sizeof(buf_half), MSG_PEEK);
- if (res != sizeof(buf_half)) {
- fprintf(stderr, "recv(2) + MSG_PEEK, expected %zu, got %zi\n",
- sizeof(buf_half), res);
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf_half, sizeof(buf_half), MSG_PEEK, sizeof(buf_half));
/* Peek whole data. */
- res = recv(fd, buf_peek, sizeof(buf_peek), MSG_PEEK);
- if (res != sizeof(buf_peek)) {
- fprintf(stderr, "recv(2) + MSG_PEEK, expected %zu, got %zi\n",
- sizeof(buf_peek), res);
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf_peek, sizeof(buf_peek), MSG_PEEK, sizeof(buf_peek));
/* Compare partial and full peek. */
if (memcmp(buf_half, buf_peek, sizeof(buf_half))) {
@@ -355,22 +336,11 @@ static void test_msg_peek_server(const struct test_opts *opts,
* so check it with MSG_PEEK. We must get length
* of the message.
*/
- res = recv(fd, buf_half, sizeof(buf_half), MSG_PEEK |
- MSG_TRUNC);
- if (res != sizeof(buf_peek)) {
- fprintf(stderr,
- "recv(2) + MSG_PEEK | MSG_TRUNC, exp %zu, got %zi\n",
- sizeof(buf_half), res);
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf_half, sizeof(buf_half), MSG_PEEK | MSG_TRUNC,
+ sizeof(buf_peek));
}
- res = recv(fd, buf_normal, sizeof(buf_normal), 0);
- if (res != sizeof(buf_normal)) {
- fprintf(stderr, "recv(2), expected %zu, got %zi\n",
- sizeof(buf_normal), res);
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf_normal, sizeof(buf_normal), 0, sizeof(buf_normal));
/* Compare full peek and normal read. */
if (memcmp(buf_peek, buf_normal, sizeof(buf_peek))) {
@@ -900,7 +870,6 @@ static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
unsigned long lowat_val = RCVLOWAT_BUF_SIZE;
char buf[RCVLOWAT_BUF_SIZE];
struct pollfd fds;
- ssize_t read_res;
short poll_flags;
int fd;
@@ -955,12 +924,7 @@ static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
/* Use MSG_DONTWAIT, if call is going to wait, EAGAIN
* will be returned.
*/
- read_res = recv(fd, buf, sizeof(buf), MSG_DONTWAIT);
- if (read_res != RCVLOWAT_BUF_SIZE) {
- fprintf(stderr, "Unexpected recv result %zi\n",
- read_res);
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf, sizeof(buf), MSG_DONTWAIT, RCVLOWAT_BUF_SIZE);
control_writeln("POLLDONE");
@@ -972,7 +936,7 @@ static void test_stream_poll_rcvlowat_client(const struct test_opts *opts)
static void test_inv_buf_client(const struct test_opts *opts, bool stream)
{
unsigned char data[INV_BUF_TEST_DATA_LEN] = {0};
- ssize_t ret;
+ ssize_t expected_ret;
int fd;
if (stream)
@@ -988,39 +952,18 @@ static void test_inv_buf_client(const struct test_opts *opts, bool stream)
control_expectln("SENDDONE");
/* Use invalid buffer here. */
- ret = recv(fd, NULL, sizeof(data), 0);
- if (ret != -1) {
- fprintf(stderr, "expected recv(2) failure, got %zi\n", ret);
- exit(EXIT_FAILURE);
- }
-
- if (errno != EFAULT) {
- fprintf(stderr, "unexpected recv(2) errno %d\n", errno);
- exit(EXIT_FAILURE);
- }
-
- ret = recv(fd, data, sizeof(data), MSG_DONTWAIT);
+ recv_buf(fd, NULL, sizeof(data), 0, -EFAULT);
if (stream) {
/* For SOCK_STREAM we must continue reading. */
- if (ret != sizeof(data)) {
- fprintf(stderr, "expected recv(2) success, got %zi\n", ret);
- exit(EXIT_FAILURE);
- }
- /* Don't check errno in case of success. */
+ expected_ret = sizeof(data);
} else {
/* For SOCK_SEQPACKET socket's queue must be empty. */
- if (ret != -1) {
- fprintf(stderr, "expected recv(2) failure, got %zi\n", ret);
- exit(EXIT_FAILURE);
- }
-
- if (errno != EAGAIN) {
- fprintf(stderr, "unexpected recv(2) errno %d\n", errno);
- exit(EXIT_FAILURE);
- }
+ expected_ret = -EAGAIN;
}
+ recv_buf(fd, data, sizeof(data), MSG_DONTWAIT, expected_ret);
+
control_writeln("DONE");
close(fd);
@@ -1117,7 +1060,6 @@ static void test_stream_virtio_skb_merge_client(const struct test_opts *opts)
static void test_stream_virtio_skb_merge_server(const struct test_opts *opts)
{
unsigned char buf[64];
- ssize_t res;
int fd;
fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
@@ -1129,26 +1071,14 @@ static void test_stream_virtio_skb_merge_server(const struct test_opts *opts)
control_expectln("SEND0");
/* Read skbuff partially. */
- res = recv(fd, buf, 2, 0);
- if (res != 2) {
- fprintf(stderr, "expected recv(2) returns 2 bytes, got %zi\n", res);
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf, 2, 0, 2);
control_writeln("REPLY0");
control_expectln("SEND1");
- res = recv(fd, buf + 2, sizeof(buf) - 2, 0);
- if (res != 8) {
- fprintf(stderr, "expected recv(2) returns 8 bytes, got %zi\n", res);
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf + 2, 8, 0, 8);
- res = recv(fd, buf, sizeof(buf) - 8 - 2, MSG_DONTWAIT);
- if (res != -1) {
- fprintf(stderr, "expected recv(2) failure, got %zi\n", res);
- exit(EXIT_FAILURE);
- }
+ recv_buf(fd, buf, sizeof(buf) - 8 - 2, MSG_DONTWAIT, -EAGAIN);
if (memcmp(buf, HELLO_STR WORLD_STR, strlen(HELLO_STR WORLD_STR))) {
fprintf(stderr, "pattern mismatch\n");
--
2.41.0
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