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SubjectRe: [PATCH v2 07/11] VSOCK: add AF_VSOCK test cases
Hi Stefan,
I'm thinking about dividing this test into single applications, one
for each test, do you think it makes sense?
Or is it just a useless complication?

Thanks,
Stefano

On Thu, Aug 1, 2019 at 5:27 PM Stefano Garzarella <sgarzare@redhat.com> wrote:
>
> From: Stefan Hajnoczi <stefanha@redhat.com>
>
> The vsock_test.c program runs a test suite of AF_VSOCK test cases.
>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
> v2:
> * Drop unnecessary includes [Stefan]
> * Aligned with the current SPDX [Stefano]
> * Set MULTICONN_NFDS to 100 [Stefano]
> * Change (i % 1) in (i % 2) in the 'multiconn' test [Stefano]
> ---
> tools/testing/vsock/.gitignore | 1 +
> tools/testing/vsock/Makefile | 5 +-
> tools/testing/vsock/README | 1 +
> tools/testing/vsock/vsock_test.c | 312 +++++++++++++++++++++++++++++++
> 4 files changed, 317 insertions(+), 2 deletions(-)
> create mode 100644 tools/testing/vsock/vsock_test.c
>
> diff --git a/tools/testing/vsock/.gitignore b/tools/testing/vsock/.gitignore
> index dc5f11faf530..7f7a2ccc30c4 100644
> --- a/tools/testing/vsock/.gitignore
> +++ b/tools/testing/vsock/.gitignore
> @@ -1,2 +1,3 @@
> *.d
> +vsock_test
> vsock_diag_test
> diff --git a/tools/testing/vsock/Makefile b/tools/testing/vsock/Makefile
> index a916878a2d8c..f8293c6910c9 100644
> --- a/tools/testing/vsock/Makefile
> +++ b/tools/testing/vsock/Makefile
> @@ -1,10 +1,11 @@
> # SPDX-License-Identifier: GPL-2.0-only
> all: test
> -test: vsock_diag_test
> +test: vsock_test vsock_diag_test
> +vsock_test: vsock_test.o timeout.o control.o util.o
> vsock_diag_test: vsock_diag_test.o timeout.o control.o util.o
>
> CFLAGS += -g -O2 -Werror -Wall -I. -I../../include -I../../../usr/include -Wno-pointer-sign -fno-strict-overflow -fno-strict-aliasing -fno-common -MMD -U_FORTIFY_SOURCE -D_GNU_SOURCE
> .PHONY: all test clean
> clean:
> - ${RM} *.o *.d vsock_diag_test
> + ${RM} *.o *.d vsock_test vsock_diag_test
> -include *.d
> diff --git a/tools/testing/vsock/README b/tools/testing/vsock/README
> index cf7dc64273bf..4d5045e7d2c3 100644
> --- a/tools/testing/vsock/README
> +++ b/tools/testing/vsock/README
> @@ -5,6 +5,7 @@ Hyper-V.
>
> The following tests are available:
>
> + * vsock_test - core AF_VSOCK socket functionality
> * vsock_diag_test - vsock_diag.ko module for listing open sockets
>
> The following prerequisite steps are not automated and must be performed prior
> diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
> new file mode 100644
> index 000000000000..06099d037405
> --- /dev/null
> +++ b/tools/testing/vsock/vsock_test.c
> @@ -0,0 +1,312 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * vsock_test - vsock.ko test suite
> + *
> + * Copyright (C) 2017 Red Hat, Inc.
> + *
> + * Author: Stefan Hajnoczi <stefanha@redhat.com>
> + */
> +
> +#include <getopt.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <errno.h>
> +#include <unistd.h>
> +
> +#include "timeout.h"
> +#include "control.h"
> +#include "util.h"
> +
> +static void test_stream_connection_reset(const struct test_opts *opts)
> +{
> + union {
> + struct sockaddr sa;
> + struct sockaddr_vm svm;
> + } addr = {
> + .svm = {
> + .svm_family = AF_VSOCK,
> + .svm_port = 1234,
> + .svm_cid = opts->peer_cid,
> + },
> + };
> + int ret;
> + int fd;
> +
> + fd = socket(AF_VSOCK, SOCK_STREAM, 0);
> +
> + timeout_begin(TIMEOUT);
> + do {
> + ret = connect(fd, &addr.sa, sizeof(addr.svm));
> + timeout_check("connect");
> + } while (ret < 0 && errno == EINTR);
> + timeout_end();
> +
> + if (ret != -1) {
> + fprintf(stderr, "expected connect(2) failure, got %d\n", ret);
> + exit(EXIT_FAILURE);
> + }
> + if (errno != ECONNRESET) {
> + fprintf(stderr, "unexpected connect(2) errno %d\n", errno);
> + exit(EXIT_FAILURE);
> + }
> +
> + close(fd);
> +}
> +
> +static void test_stream_client_close_client(const struct test_opts *opts)
> +{
> + int fd;
> +
> + fd = vsock_stream_connect(opts->peer_cid, 1234);
> + if (fd < 0) {
> + perror("connect");
> + exit(EXIT_FAILURE);
> + }
> +
> + send_byte(fd, 1);
> + close(fd);
> + control_writeln("CLOSED");
> +}
> +
> +static void test_stream_client_close_server(const struct test_opts *opts)
> +{
> + int fd;
> +
> + fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
> + if (fd < 0) {
> + perror("accept");
> + exit(EXIT_FAILURE);
> + }
> +
> + control_expectln("CLOSED");
> +
> + send_byte(fd, -EPIPE);
> + recv_byte(fd, 1);
> + recv_byte(fd, 0);
> + close(fd);
> +}
> +
> +static void test_stream_server_close_client(const struct test_opts *opts)
> +{
> + int fd;
> +
> + fd = vsock_stream_connect(opts->peer_cid, 1234);
> + if (fd < 0) {
> + perror("connect");
> + exit(EXIT_FAILURE);
> + }
> +
> + control_expectln("CLOSED");
> +
> + send_byte(fd, -EPIPE);
> + recv_byte(fd, 1);
> + recv_byte(fd, 0);
> + close(fd);
> +}
> +
> +static void test_stream_server_close_server(const struct test_opts *opts)
> +{
> + int fd;
> +
> + fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
> + if (fd < 0) {
> + perror("accept");
> + exit(EXIT_FAILURE);
> + }
> +
> + send_byte(fd, 1);
> + close(fd);
> + control_writeln("CLOSED");
> +}
> +
> +/* With the standard socket sizes, VMCI is able to support about 100
> + * concurrent stream connections.
> + */
> +#define MULTICONN_NFDS 100
> +
> +static void test_stream_multiconn_client(const struct test_opts *opts)
> +{
> + int fds[MULTICONN_NFDS];
> + int i;
> +
> + for (i = 0; i < MULTICONN_NFDS; i++) {
> + fds[i] = vsock_stream_connect(opts->peer_cid, 1234);
> + if (fds[i] < 0) {
> + perror("connect");
> + exit(EXIT_FAILURE);
> + }
> + }
> +
> + for (i = 0; i < MULTICONN_NFDS; i++) {
> + if (i % 2)
> + recv_byte(fds[i], 1);
> + else
> + send_byte(fds[i], 1);
> + }
> +
> + for (i = 0; i < MULTICONN_NFDS; i++)
> + close(fds[i]);
> +}
> +
> +static void test_stream_multiconn_server(const struct test_opts *opts)
> +{
> + int fds[MULTICONN_NFDS];
> + int i;
> +
> + for (i = 0; i < MULTICONN_NFDS; i++) {
> + fds[i] = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
> + if (fds[i] < 0) {
> + perror("accept");
> + exit(EXIT_FAILURE);
> + }
> + }
> +
> + for (i = 0; i < MULTICONN_NFDS; i++) {
> + if (i % 2)
> + send_byte(fds[i], 1);
> + else
> + recv_byte(fds[i], 1);
> + }
> +
> + for (i = 0; i < MULTICONN_NFDS; i++)
> + close(fds[i]);
> +}
> +
> +static struct test_case test_cases[] = {
> + {
> + .name = "SOCK_STREAM connection reset",
> + .run_client = test_stream_connection_reset,
> + },
> + {
> + .name = "SOCK_STREAM client close",
> + .run_client = test_stream_client_close_client,
> + .run_server = test_stream_client_close_server,
> + },
> + {
> + .name = "SOCK_STREAM server close",
> + .run_client = test_stream_server_close_client,
> + .run_server = test_stream_server_close_server,
> + },
> + {
> + .name = "SOCK_STREAM multiple connections",
> + .run_client = test_stream_multiconn_client,
> + .run_server = test_stream_multiconn_server,
> + },
> + {},
> +};
> +
> +static const char optstring[] = "";
> +static const struct option longopts[] = {
> + {
> + .name = "control-host",
> + .has_arg = required_argument,
> + .val = 'H',
> + },
> + {
> + .name = "control-port",
> + .has_arg = required_argument,
> + .val = 'P',
> + },
> + {
> + .name = "mode",
> + .has_arg = required_argument,
> + .val = 'm',
> + },
> + {
> + .name = "peer-cid",
> + .has_arg = required_argument,
> + .val = 'p',
> + },
> + {
> + .name = "help",
> + .has_arg = no_argument,
> + .val = '?',
> + },
> + {},
> +};
> +
> +static void usage(void)
> +{
> + fprintf(stderr, "Usage: vsock_test [--help] [--control-host=<host>] --control-port=<port> --mode=client|server --peer-cid=<cid>\n"
> + "\n"
> + " Server: vsock_test --control-port=1234 --mode=server --peer-cid=3\n"
> + " Client: vsock_test --control-host=192.168.0.1 --control-port=1234 --mode=client --peer-cid=2\n"
> + "\n"
> + "Run vsock.ko tests. Must be launched in both guest\n"
> + "and host. One side must use --mode=client and\n"
> + "the other side must use --mode=server.\n"
> + "\n"
> + "A TCP control socket connection is used to coordinate tests\n"
> + "between the client and the server. The server requires a\n"
> + "listen address and the client requires an address to\n"
> + "connect to.\n"
> + "\n"
> + "The CID of the other side must be given with --peer-cid=<cid>.\n");
> + exit(EXIT_FAILURE);
> +}
> +
> +int main(int argc, char **argv)
> +{
> + const char *control_host = NULL;
> + const char *control_port = NULL;
> + struct test_opts opts = {
> + .mode = TEST_MODE_UNSET,
> + .peer_cid = VMADDR_CID_ANY,
> + };
> +
> + init_signals();
> +
> + for (;;) {
> + int opt = getopt_long(argc, argv, optstring, longopts, NULL);
> +
> + if (opt == -1)
> + break;
> +
> + switch (opt) {
> + case 'H':
> + control_host = optarg;
> + break;
> + case 'm':
> + if (strcmp(optarg, "client") == 0)
> + opts.mode = TEST_MODE_CLIENT;
> + else if (strcmp(optarg, "server") == 0)
> + opts.mode = TEST_MODE_SERVER;
> + else {
> + fprintf(stderr, "--mode must be \"client\" or \"server\"\n");
> + return EXIT_FAILURE;
> + }
> + break;
> + case 'p':
> + opts.peer_cid = parse_cid(optarg);
> + break;
> + case 'P':
> + control_port = optarg;
> + break;
> + case '?':
> + default:
> + usage();
> + }
> + }
> +
> + if (!control_port)
> + usage();
> + if (opts.mode == TEST_MODE_UNSET)
> + usage();
> + if (opts.peer_cid == VMADDR_CID_ANY)
> + usage();
> +
> + if (!control_host) {
> + if (opts.mode != TEST_MODE_SERVER)
> + usage();
> + control_host = "0.0.0.0";
> + }
> +
> + control_init(control_host, control_port,
> + opts.mode == TEST_MODE_SERVER);
> +
> + run_tests(test_cases, &opts);
> +
> + control_cleanup();
> + return EXIT_SUCCESS;
> +}
> --
> 2.20.1

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