From: Stefan Hajnoczi <stefa...@redhat.com>

The vsock_test.c program runs a test suite of AF_VSOCK test cases.

Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
Signed-off-by: Stefano Garzarella <sgarz...@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 <stefa...@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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