Re: [PATCH net-next 4/5] vsock/test: use send_buf() in vsock_test.c

[Arseniy Krasnov <avkrasnov@salutedevices.com>]

On 15.09.2023 15:14, Stefano Garzarella wrote:
> We have a very common pattern used in vsock_test that we can
> now replace with the new send_buf().
> 
> This allows us to reuse the code we already had to check the
> actual return value and wait for all the bytes to be sent with
> an appropriate timeout.
> 
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
>  tools/testing/vsock/vsock_test.c | 75 ++++----------------------------
>  1 file changed, 9 insertions(+), 66 deletions(-)

Reviewed-by: Arseniy Krasnov <avkrasnov@salutedevices.com>

> 
> diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
> index d1dcbaeb477a..b18acbaf92e2 100644
> --- a/tools/testing/vsock/vsock_test.c
> +++ b/tools/testing/vsock/vsock_test.c
> @@ -261,7 +261,6 @@ static void test_msg_peek_client(const struct test_opts *opts,
>  				 bool seqpacket)
>  {
>  	unsigned char buf[MSG_PEEK_BUF_LEN];
> -	ssize_t send_size;
>  	int fd;
>  	int i;
>  
> @@ -280,17 +279,7 @@ static void test_msg_peek_client(const struct test_opts *opts,
>  
>  	control_expectln("SRVREADY");
>  
> -	send_size = send(fd, buf, sizeof(buf), 0);
> -
> -	if (send_size < 0) {
> -		perror("send");
> -		exit(EXIT_FAILURE);
> -	}
> -
> -	if (send_size != sizeof(buf)) {
> -		fprintf(stderr, "Invalid send size %zi\n", send_size);
> -		exit(EXIT_FAILURE);
> -	}
> +	send_buf(fd, buf, sizeof(buf), 0, sizeof(buf));
>  
>  	close(fd);
>  }
> @@ -385,7 +374,6 @@ static void test_seqpacket_msg_bounds_client(const struct test_opts *opts)
>  	msg_count = SOCK_BUF_SIZE / MAX_MSG_SIZE;
>  
>  	for (int i = 0; i < msg_count; i++) {
> -		ssize_t send_size;
>  		size_t buf_size;
>  		int flags;
>  		void *buf;
> @@ -413,17 +401,7 @@ static void test_seqpacket_msg_bounds_client(const struct test_opts *opts)
>  			flags = 0;
>  		}
>  
> -		send_size = send(fd, buf, buf_size, flags);
> -
> -		if (send_size < 0) {
> -			perror("send");
> -			exit(EXIT_FAILURE);
> -		}
> -
> -		if (send_size != buf_size) {
> -			fprintf(stderr, "Invalid send size\n");
> -			exit(EXIT_FAILURE);
> -		}
> +		send_buf(fd, buf, buf_size, flags, buf_size);
>  
>  		/*
>  		 * Hash sum is computed at both client and server in
> @@ -524,10 +502,7 @@ static void test_seqpacket_msg_trunc_client(const struct test_opts *opts)
>  		exit(EXIT_FAILURE);
>  	}
>  
> -	if (send(fd, buf, sizeof(buf), 0) != sizeof(buf)) {
> -		perror("send failed");
> -		exit(EXIT_FAILURE);
> -	}
> +	send_buf(fd, buf, sizeof(buf), 0, sizeof(buf));
>  
>  	control_writeln("SENDDONE");
>  	close(fd);
> @@ -649,7 +624,6 @@ static void test_seqpacket_timeout_server(const struct test_opts *opts)
>  static void test_seqpacket_bigmsg_client(const struct test_opts *opts)
>  {
>  	unsigned long sock_buf_size;
> -	ssize_t send_size;
>  	socklen_t len;
>  	void *data;
>  	int fd;
> @@ -676,18 +650,7 @@ static void test_seqpacket_bigmsg_client(const struct test_opts *opts)
>  		exit(EXIT_FAILURE);
>  	}
>  
> -	send_size = send(fd, data, sock_buf_size, 0);
> -	if (send_size != -1) {
> -		fprintf(stderr, "expected 'send(2)' failure, got %zi\n",
> -			send_size);
> -		exit(EXIT_FAILURE);
> -	}
> -
> -	if (errno != EMSGSIZE) {
> -		fprintf(stderr, "expected EMSGSIZE in 'errno', got %i\n",
> -			errno);
> -		exit(EXIT_FAILURE);
> -	}
> +	send_buf(fd, data, sock_buf_size, 0, -EMSGSIZE);
>  
>  	control_writeln("CLISENT");
>  
> @@ -741,15 +704,9 @@ static void test_seqpacket_invalid_rec_buffer_client(const struct test_opts *opt
>  	memset(buf1, BUF_PATTERN_1, buf_size);
>  	memset(buf2, BUF_PATTERN_2, buf_size);
>  
> -	if (send(fd, buf1, buf_size, 0) != buf_size) {
> -		perror("send failed");
> -		exit(EXIT_FAILURE);
> -	}
> +	send_buf(fd, buf1, buf_size, 0, buf_size);
>  
> -	if (send(fd, buf2, buf_size, 0) != buf_size) {
> -		perror("send failed");
> -		exit(EXIT_FAILURE);
> -	}
> +	send_buf(fd, buf2, buf_size, 0, buf_size);
>  
>  	close(fd);
>  }
> @@ -972,7 +929,6 @@ static void test_inv_buf_client(const struct test_opts *opts, bool stream)
>  static void test_inv_buf_server(const struct test_opts *opts, bool stream)
>  {
>  	unsigned char data[INV_BUF_TEST_DATA_LEN] = {0};
> -	ssize_t res;
>  	int fd;
>  
>  	if (stream)
> @@ -985,11 +941,7 @@ static void test_inv_buf_server(const struct test_opts *opts, bool stream)
>  		exit(EXIT_FAILURE);
>  	}
>  
> -	res = send(fd, data, sizeof(data), 0);
> -	if (res != sizeof(data)) {
> -		fprintf(stderr, "unexpected send(2) result %zi\n", res);
> -		exit(EXIT_FAILURE);
> -	}
> +	send_buf(fd, data, sizeof(data), 0, sizeof(data));
>  
>  	control_writeln("SENDDONE");
>  
> @@ -1023,7 +975,6 @@ static void test_seqpacket_inv_buf_server(const struct test_opts *opts)
>  
>  static void test_stream_virtio_skb_merge_client(const struct test_opts *opts)
>  {
> -	ssize_t res;
>  	int fd;
>  
>  	fd = vsock_stream_connect(opts->peer_cid, 1234);
> @@ -1033,22 +984,14 @@ static void test_stream_virtio_skb_merge_client(const struct test_opts *opts)
>  	}
>  
>  	/* Send first skbuff. */
> -	res = send(fd, HELLO_STR, strlen(HELLO_STR), 0);
> -	if (res != strlen(HELLO_STR)) {
> -		fprintf(stderr, "unexpected send(2) result %zi\n", res);
> -		exit(EXIT_FAILURE);
> -	}
> +	send_buf(fd, HELLO_STR, strlen(HELLO_STR), 0, strlen(HELLO_STR));
>  
>  	control_writeln("SEND0");
>  	/* Peer reads part of first skbuff. */
>  	control_expectln("REPLY0");
>  
>  	/* Send second skbuff, it will be appended to the first. */
> -	res = send(fd, WORLD_STR, strlen(WORLD_STR), 0);
> -	if (res != strlen(WORLD_STR)) {
> -		fprintf(stderr, "unexpected send(2) result %zi\n", res);
> -		exit(EXIT_FAILURE);
> -	}
> +	send_buf(fd, WORLD_STR, strlen(WORLD_STR), 0, strlen(WORLD_STR));
>  
>  	control_writeln("SEND1");
>  	/* Peer reads merged skbuff packet. */