test: Move qtests to a separate directory

The tests directory itself is pretty overcrowded, and it's hard to
see which test belongs to which test subsystem (unit, qtest, ...).
Let's move the qtests to a separate folder for more clarity.

Message-Id: <20191218103059.11729-6-thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 0 insertions, 967 deletions

diff --git a/tests/vhost-user-test.c b/tests/vhost-user-test.c
deleted file mode 100644
index 91ea373ba5..0000000000
--- a/tests/vhost-user-test.c
+++ /dev/null
@@ -1,967 +0,0 @@
-/*
- * QTest testcase for the vhost-user
- *
- * Copyright (c) 2014 Virtual Open Systems Sarl.
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- */
-
-#include "qemu/osdep.h"
-
-#include "libqtest-single.h"
-#include "qapi/error.h"
-#include "qapi/qmp/qdict.h"
-#include "qemu/config-file.h"
-#include "qemu/option.h"
-#include "qemu/range.h"
-#include "qemu/sockets.h"
-#include "chardev/char-fe.h"
-#include "qemu/memfd.h"
-#include "qemu/module.h"
-#include "sysemu/sysemu.h"
-#include "libqos/libqos.h"
-#include "libqos/pci-pc.h"
-#include "libqos/virtio-pci.h"
-
-#include "libqos/malloc-pc.h"
-#include "hw/virtio/virtio-net.h"
-
-#include "standard-headers/linux/vhost_types.h"
-#include "standard-headers/linux/virtio_ids.h"
-#include "standard-headers/linux/virtio_net.h"
-
-#ifdef CONFIG_LINUX
-#include <sys/vfs.h>
-#endif
-
-
-#define QEMU_CMD_MEM    " -m %d -object memory-backend-file,id=mem,size=%dM," \
-                        "mem-path=%s,share=on -numa node,memdev=mem"
-#define QEMU_CMD_MEMFD  " -m %d -object memory-backend-memfd,id=mem,size=%dM," \
-                        " -numa node,memdev=mem"
-#define QEMU_CMD_CHR    " -chardev socket,id=%s,path=%s%s"
-#define QEMU_CMD_NETDEV " -netdev vhost-user,id=hs0,chardev=%s,vhostforce"
-
-#define HUGETLBFS_MAGIC       0x958458f6
-
-/*********** FROM hw/virtio/vhost-user.c *************************************/
-
-#define VHOST_MEMORY_MAX_NREGIONS    8
-#define VHOST_MAX_VIRTQUEUES    0x100
-
-#define VHOST_USER_F_PROTOCOL_FEATURES 30
-#define VHOST_USER_PROTOCOL_F_MQ 0
-#define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1
-#define VHOST_USER_PROTOCOL_F_CROSS_ENDIAN   6
-
-#define VHOST_LOG_PAGE 0x1000
-
-typedef enum VhostUserRequest {
-    VHOST_USER_NONE = 0,
-    VHOST_USER_GET_FEATURES = 1,
-    VHOST_USER_SET_FEATURES = 2,
-    VHOST_USER_SET_OWNER = 3,
-    VHOST_USER_RESET_OWNER = 4,
-    VHOST_USER_SET_MEM_TABLE = 5,
-    VHOST_USER_SET_LOG_BASE = 6,
-    VHOST_USER_SET_LOG_FD = 7,
-    VHOST_USER_SET_VRING_NUM = 8,
-    VHOST_USER_SET_VRING_ADDR = 9,
-    VHOST_USER_SET_VRING_BASE = 10,
-    VHOST_USER_GET_VRING_BASE = 11,
-    VHOST_USER_SET_VRING_KICK = 12,
-    VHOST_USER_SET_VRING_CALL = 13,
-    VHOST_USER_SET_VRING_ERR = 14,
-    VHOST_USER_GET_PROTOCOL_FEATURES = 15,
-    VHOST_USER_SET_PROTOCOL_FEATURES = 16,
-    VHOST_USER_GET_QUEUE_NUM = 17,
-    VHOST_USER_SET_VRING_ENABLE = 18,
-    VHOST_USER_MAX
-} VhostUserRequest;
-
-typedef struct VhostUserMemoryRegion {
-    uint64_t guest_phys_addr;
-    uint64_t memory_size;
-    uint64_t userspace_addr;
-    uint64_t mmap_offset;
-} VhostUserMemoryRegion;
-
-typedef struct VhostUserMemory {
-    uint32_t nregions;
-    uint32_t padding;
-    VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
-} VhostUserMemory;
-
-typedef struct VhostUserLog {
-    uint64_t mmap_size;
-    uint64_t mmap_offset;
-} VhostUserLog;
-
-typedef struct VhostUserMsg {
-    VhostUserRequest request;
-
-#define VHOST_USER_VERSION_MASK     (0x3)
-#define VHOST_USER_REPLY_MASK       (0x1<<2)
-    uint32_t flags;
-    uint32_t size; /* the following payload size */
-    union {
-#define VHOST_USER_VRING_IDX_MASK   (0xff)
-#define VHOST_USER_VRING_NOFD_MASK  (0x1<<8)
-        uint64_t u64;
-        struct vhost_vring_state state;
-        struct vhost_vring_addr addr;
-        VhostUserMemory memory;
-        VhostUserLog log;
-    } payload;
-} QEMU_PACKED VhostUserMsg;
-
-static VhostUserMsg m __attribute__ ((unused));
-#define VHOST_USER_HDR_SIZE (sizeof(m.request) \
-                            + sizeof(m.flags) \
-                            + sizeof(m.size))
-
-#define VHOST_USER_PAYLOAD_SIZE (sizeof(m) - VHOST_USER_HDR_SIZE)
-
-/* The version of the protocol we support */
-#define VHOST_USER_VERSION    (0x1)
-/*****************************************************************************/
-
-enum {
-    TEST_FLAGS_OK,
-    TEST_FLAGS_DISCONNECT,
-    TEST_FLAGS_BAD,
-    TEST_FLAGS_END,
-};
-
-typedef struct TestServer {
-    gchar *socket_path;
-    gchar *mig_path;
-    gchar *chr_name;
-    gchar *tmpfs;
-    CharBackend chr;
-    int fds_num;
-    int fds[VHOST_MEMORY_MAX_NREGIONS];
-    VhostUserMemory memory;
-    GMainContext *context;
-    GMainLoop *loop;
-    GThread *thread;
-    GMutex data_mutex;
-    GCond data_cond;
-    int log_fd;
-    uint64_t rings;
-    bool test_fail;
-    int test_flags;
-    int queues;
-} TestServer;
-
-static const char *init_hugepagefs(void);
-static TestServer *test_server_new(const gchar *name);
-static void test_server_free(TestServer *server);
-static void test_server_listen(TestServer *server);
-
-enum test_memfd {
-    TEST_MEMFD_AUTO,
-    TEST_MEMFD_YES,
-    TEST_MEMFD_NO,
-};
-
-static void append_vhost_opts(TestServer *s, GString *cmd_line,
-                             const char *chr_opts)
-{
-    g_string_append_printf(cmd_line, QEMU_CMD_CHR QEMU_CMD_NETDEV,
-                           s->chr_name, s->socket_path,
-                           chr_opts, s->chr_name);
-}
-
-static void append_mem_opts(TestServer *server, GString *cmd_line,
-                            int size, enum test_memfd memfd)
-{
-    if (memfd == TEST_MEMFD_AUTO) {
-        memfd = qemu_memfd_check(MFD_ALLOW_SEALING) ? TEST_MEMFD_YES
-                                                    : TEST_MEMFD_NO;
-    }
-
-    if (memfd == TEST_MEMFD_YES) {
-        g_string_append_printf(cmd_line, QEMU_CMD_MEMFD, size, size);
-    } else {
-        const char *root = init_hugepagefs() ? : server->tmpfs;
-
-        g_string_append_printf(cmd_line, QEMU_CMD_MEM, size, size, root);
-    }
-}
-
-static bool wait_for_fds(TestServer *s)
-{
-    gint64 end_time;
-    bool got_region;
-    int i;
-
-    g_mutex_lock(&s->data_mutex);
-
-    end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
-    while (!s->fds_num) {
-        if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
-            /* timeout has passed */
-            g_assert(s->fds_num);
-            break;
-        }
-    }
-
-    /* check for sanity */
-    g_assert_cmpint(s->fds_num, >, 0);
-    g_assert_cmpint(s->fds_num, ==, s->memory.nregions);
-
-    g_mutex_unlock(&s->data_mutex);
-
-    got_region = false;
-    for (i = 0; i < s->memory.nregions; ++i) {
-        VhostUserMemoryRegion *reg = &s->memory.regions[i];
-        if (reg->guest_phys_addr == 0) {
-            got_region = true;
-            break;
-        }
-    }
-    if (!got_region) {
-        g_test_skip("No memory at address 0x0");
-    }
-    return got_region;
-}
-
-static void read_guest_mem_server(QTestState *qts, TestServer *s)
-{
-    uint8_t *guest_mem;
-    int i, j;
-    size_t size;
-
-    g_mutex_lock(&s->data_mutex);
-
-    /* iterate all regions */
-    for (i = 0; i < s->fds_num; i++) {
-
-        /* We'll check only the region statring at 0x0*/
-        if (s->memory.regions[i].guest_phys_addr != 0x0) {
-            continue;
-        }
-
-        g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024);
-
-        size = s->memory.regions[i].memory_size +
-            s->memory.regions[i].mmap_offset;
-
-        guest_mem = mmap(0, size, PROT_READ | PROT_WRITE,
-                         MAP_SHARED, s->fds[i], 0);
-
-        g_assert(guest_mem != MAP_FAILED);
-        guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem));
-
-        for (j = 0; j < 1024; j++) {
-            uint32_t a = qtest_readb(qts, s->memory.regions[i].guest_phys_addr + j);
-            uint32_t b = guest_mem[j];
-
-            g_assert_cmpint(a, ==, b);
-        }
-
-        munmap(guest_mem, s->memory.regions[i].memory_size);
-    }
-
-    g_mutex_unlock(&s->data_mutex);
-}
-
-static void *thread_function(void *data)
-{
-    GMainLoop *loop = data;
-    g_main_loop_run(loop);
-    return NULL;
-}
-
-static int chr_can_read(void *opaque)
-{
-    return VHOST_USER_HDR_SIZE;
-}
-
-static void chr_read(void *opaque, const uint8_t *buf, int size)
-{
-    TestServer *s = opaque;
-    CharBackend *chr = &s->chr;
-    VhostUserMsg msg;
-    uint8_t *p = (uint8_t *) &msg;
-    int fd = -1;
-
-    if (s->test_fail) {
-        qemu_chr_fe_disconnect(chr);
-        /* now switch to non-failure */
-        s->test_fail = false;
-    }
-
-    if (size != VHOST_USER_HDR_SIZE) {
-        g_test_message("Wrong message size received %d", size);
-        return;
-    }
-
-    g_mutex_lock(&s->data_mutex);
-    memcpy(p, buf, VHOST_USER_HDR_SIZE);
-
-    if (msg.size) {
-        p += VHOST_USER_HDR_SIZE;
-        size = qemu_chr_fe_read_all(chr, p, msg.size);
-        if (size != msg.size) {
-            g_test_message("Wrong message size received %d != %d",
-                           size, msg.size);
-            return;
-        }
-    }
-
-    switch (msg.request) {
-    case VHOST_USER_GET_FEATURES:
-        /* send back features to qemu */
-        msg.flags |= VHOST_USER_REPLY_MASK;
-        msg.size = sizeof(m.payload.u64);
-        msg.payload.u64 = 0x1ULL << VHOST_F_LOG_ALL |
-            0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES;
-        if (s->queues > 1) {
-            msg.payload.u64 |= 0x1ULL << VIRTIO_NET_F_MQ;
-        }
-        if (s->test_flags >= TEST_FLAGS_BAD) {
-            msg.payload.u64 = 0;
-            s->test_flags = TEST_FLAGS_END;
-        }
-        p = (uint8_t *) &msg;
-        qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
-        break;
-
-    case VHOST_USER_SET_FEATURES:
-        g_assert_cmpint(msg.payload.u64 & (0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES),
-                        !=, 0ULL);
-        if (s->test_flags == TEST_FLAGS_DISCONNECT) {
-            qemu_chr_fe_disconnect(chr);
-            s->test_flags = TEST_FLAGS_BAD;
-        }
-        break;
-
-    case VHOST_USER_GET_PROTOCOL_FEATURES:
-        /* send back features to qemu */
-        msg.flags |= VHOST_USER_REPLY_MASK;
-        msg.size = sizeof(m.payload.u64);
-        msg.payload.u64 = 1 << VHOST_USER_PROTOCOL_F_LOG_SHMFD;
-        msg.payload.u64 |= 1 << VHOST_USER_PROTOCOL_F_CROSS_ENDIAN;
-        if (s->queues > 1) {
-            msg.payload.u64 |= 1 << VHOST_USER_PROTOCOL_F_MQ;
-        }
-        p = (uint8_t *) &msg;
-        qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
-        break;
-
-    case VHOST_USER_GET_VRING_BASE:
-        /* send back vring base to qemu */
-        msg.flags |= VHOST_USER_REPLY_MASK;
-        msg.size = sizeof(m.payload.state);
-        msg.payload.state.num = 0;
-        p = (uint8_t *) &msg;
-        qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
-
-        assert(msg.payload.state.index < s->queues * 2);
-        s->rings &= ~(0x1ULL << msg.payload.state.index);
-        g_cond_broadcast(&s->data_cond);
-        break;
-
-    case VHOST_USER_SET_MEM_TABLE:
-        /* received the mem table */
-        memcpy(&s->memory, &msg.payload.memory, sizeof(msg.payload.memory));
-        s->fds_num = qemu_chr_fe_get_msgfds(chr, s->fds,
-                                            G_N_ELEMENTS(s->fds));
-
-        /* signal the test that it can continue */
-        g_cond_broadcast(&s->data_cond);
-        break;
-
-    case VHOST_USER_SET_VRING_KICK:
-    case VHOST_USER_SET_VRING_CALL:
-        /* consume the fd */
-        qemu_chr_fe_get_msgfds(chr, &fd, 1);
-        /*
-         * This is a non-blocking eventfd.
-         * The receive function forces it to be blocking,
-         * so revert it back to non-blocking.
-         */
-        qemu_set_nonblock(fd);
-        break;
-
-    case VHOST_USER_SET_LOG_BASE:
-        if (s->log_fd != -1) {
-            close(s->log_fd);
-            s->log_fd = -1;
-        }
-        qemu_chr_fe_get_msgfds(chr, &s->log_fd, 1);
-        msg.flags |= VHOST_USER_REPLY_MASK;
-        msg.size = 0;
-        p = (uint8_t *) &msg;
-        qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE);
-
-        g_cond_broadcast(&s->data_cond);
-        break;
-
-    case VHOST_USER_SET_VRING_BASE:
-        assert(msg.payload.state.index < s->queues * 2);
-        s->rings |= 0x1ULL << msg.payload.state.index;
-        g_cond_broadcast(&s->data_cond);
-        break;
-
-    case VHOST_USER_GET_QUEUE_NUM:
-        msg.flags |= VHOST_USER_REPLY_MASK;
-        msg.size = sizeof(m.payload.u64);
-        msg.payload.u64 = s->queues;
-        p = (uint8_t *) &msg;
-        qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
-        break;
-
-    default:
-        break;
-    }
-
-    g_mutex_unlock(&s->data_mutex);
-}
-
-static const char *init_hugepagefs(void)
-{
-#ifdef CONFIG_LINUX
-    static const char *hugepagefs;
-    const char *path = getenv("QTEST_HUGETLBFS_PATH");
-    struct statfs fs;
-    int ret;
-
-    if (hugepagefs) {
-        return hugepagefs;
-    }
-    if (!path) {
-        return NULL;
-    }
-
-    if (access(path, R_OK | W_OK | X_OK)) {
-        g_test_message("access on path (%s): %s", path, strerror(errno));
-        g_test_fail();
-        return NULL;
-    }
-
-    do {
-        ret = statfs(path, &fs);
-    } while (ret != 0 && errno == EINTR);
-
-    if (ret != 0) {
-        g_test_message("statfs on path (%s): %s", path, strerror(errno));
-        g_test_fail();
-        return NULL;
-    }
-
-    if (fs.f_type != HUGETLBFS_MAGIC) {
-        g_test_message("Warning: path not on HugeTLBFS: %s", path);
-        g_test_fail();
-        return NULL;
-    }
-
-    hugepagefs = path;
-    return hugepagefs;
-#else
-    return NULL;
-#endif
-}
-
-static TestServer *test_server_new(const gchar *name)
-{
-    TestServer *server = g_new0(TestServer, 1);
-    char template[] = "/tmp/vhost-test-XXXXXX";
-    const char *tmpfs;
-
-    server->context = g_main_context_new();
-    server->loop = g_main_loop_new(server->context, FALSE);
-
-    /* run the main loop thread so the chardev may operate */
-    server->thread = g_thread_new(NULL, thread_function, server->loop);
-
-    tmpfs = mkdtemp(template);
-    if (!tmpfs) {
-        g_test_message("mkdtemp on path (%s): %s", template, strerror(errno));
-    }
-    g_assert(tmpfs);
-
-    server->tmpfs = g_strdup(tmpfs);
-    server->socket_path = g_strdup_printf("%s/%s.sock", tmpfs, name);
-    server->mig_path = g_strdup_printf("%s/%s.mig", tmpfs, name);
-    server->chr_name = g_strdup_printf("chr-%s", name);
-
-    g_mutex_init(&server->data_mutex);
-    g_cond_init(&server->data_cond);
-
-    server->log_fd = -1;
-    server->queues = 1;
-
-    return server;
-}
-
-static void chr_event(void *opaque, int event)
-{
-    TestServer *s = opaque;
-
-    if (s->test_flags == TEST_FLAGS_END &&
-        event == CHR_EVENT_CLOSED) {
-        s->test_flags = TEST_FLAGS_OK;
-    }
-}
-
-static void test_server_create_chr(TestServer *server, const gchar *opt)
-{
-    gchar *chr_path;
-    Chardev *chr;
-
-    chr_path = g_strdup_printf("unix:%s%s", server->socket_path, opt);
-    chr = qemu_chr_new(server->chr_name, chr_path, server->context);
-    g_free(chr_path);
-
-    g_assert_nonnull(chr);
-    qemu_chr_fe_init(&server->chr, chr, &error_abort);
-    qemu_chr_fe_set_handlers(&server->chr, chr_can_read, chr_read,
-                             chr_event, NULL, server, server->context, true);
-}
-
-static void test_server_listen(TestServer *server)
-{
-    test_server_create_chr(server, ",server,nowait");
-}
-
-static void test_server_free(TestServer *server)
-{
-    int i, ret;
-
-    /* finish the helper thread and dispatch pending sources */
-    g_main_loop_quit(server->loop);
-    g_thread_join(server->thread);
-    while (g_main_context_pending(NULL)) {
-        g_main_context_iteration(NULL, TRUE);
-    }
-
-    unlink(server->socket_path);
-    g_free(server->socket_path);
-
-    unlink(server->mig_path);
-    g_free(server->mig_path);
-
-    ret = rmdir(server->tmpfs);
-    if (ret != 0) {
-        g_test_message("unable to rmdir: path (%s): %s",
-                       server->tmpfs, strerror(errno));
-    }
-    g_free(server->tmpfs);
-
-    qemu_chr_fe_deinit(&server->chr, true);
-
-    for (i = 0; i < server->fds_num; i++) {
-        close(server->fds[i]);
-    }
-
-    if (server->log_fd != -1) {
-        close(server->log_fd);
-    }
-
-    g_free(server->chr_name);
-
-    g_main_loop_unref(server->loop);
-    g_main_context_unref(server->context);
-    g_cond_clear(&server->data_cond);
-    g_mutex_clear(&server->data_mutex);
-    g_free(server);
-}
-
-static void wait_for_log_fd(TestServer *s)
-{
-    gint64 end_time;
-
-    g_mutex_lock(&s->data_mutex);
-    end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
-    while (s->log_fd == -1) {
-        if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
-            /* timeout has passed */
-            g_assert(s->log_fd != -1);
-            break;
-        }
-    }
-
-    g_mutex_unlock(&s->data_mutex);
-}
-
-static void write_guest_mem(TestServer *s, uint32_t seed)
-{
-    uint32_t *guest_mem;
-    int i, j;
-    size_t size;
-
-    /* iterate all regions */
-    for (i = 0; i < s->fds_num; i++) {
-
-        /* We'll write only the region statring at 0x0 */
-        if (s->memory.regions[i].guest_phys_addr != 0x0) {
-            continue;
-        }
-
-        g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024);
-
-        size = s->memory.regions[i].memory_size +
-            s->memory.regions[i].mmap_offset;
-
-        guest_mem = mmap(0, size, PROT_READ | PROT_WRITE,
-                         MAP_SHARED, s->fds[i], 0);
-
-        g_assert(guest_mem != MAP_FAILED);
-        guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem));
-
-        for (j = 0; j < 256; j++) {
-            guest_mem[j] = seed + j;
-        }
-
-        munmap(guest_mem, s->memory.regions[i].memory_size);
-        break;
-    }
-}
-
-static guint64 get_log_size(TestServer *s)
-{
-    guint64 log_size = 0;
-    int i;
-
-    for (i = 0; i < s->memory.nregions; ++i) {
-        VhostUserMemoryRegion *reg = &s->memory.regions[i];
-        guint64 last = range_get_last(reg->guest_phys_addr,
-                                       reg->memory_size);
-        log_size = MAX(log_size, last / (8 * VHOST_LOG_PAGE) + 1);
-    }
-
-    return log_size;
-}
-
-typedef struct TestMigrateSource {
-    GSource source;
-    TestServer *src;
-    TestServer *dest;
-} TestMigrateSource;
-
-static gboolean
-test_migrate_source_check(GSource *source)
-{
-    TestMigrateSource *t = (TestMigrateSource *)source;
-    gboolean overlap = t->src->rings && t->dest->rings;
-
-    g_assert(!overlap);
-
-    return FALSE;
-}
-
-GSourceFuncs test_migrate_source_funcs = {
-    .check = test_migrate_source_check,
-};
-
-static void vhost_user_test_cleanup(void *s)
-{
-    TestServer *server = s;
-
-    qos_invalidate_command_line();
-    test_server_free(server);
-}
-
-static void *vhost_user_test_setup(GString *cmd_line, void *arg)
-{
-    TestServer *server = test_server_new("vhost-user-test");
-    test_server_listen(server);
-
-    append_mem_opts(server, cmd_line, 256, TEST_MEMFD_AUTO);
-    append_vhost_opts(server, cmd_line, "");
-
-    g_test_queue_destroy(vhost_user_test_cleanup, server);
-
-    return server;
-}
-
-static void *vhost_user_test_setup_memfd(GString *cmd_line, void *arg)
-{
-    TestServer *server = test_server_new("vhost-user-test");
-    test_server_listen(server);
-
-    append_mem_opts(server, cmd_line, 256, TEST_MEMFD_YES);
-    append_vhost_opts(server, cmd_line, "");
-
-    g_test_queue_destroy(vhost_user_test_cleanup, server);
-
-    return server;
-}
-
-static void test_read_guest_mem(void *obj, void *arg, QGuestAllocator *alloc)
-{
-    TestServer *server = arg;
-
-    if (!wait_for_fds(server)) {
-        return;
-    }
-
-    read_guest_mem_server(global_qtest, server);
-}
-
-static void test_migrate(void *obj, void *arg, QGuestAllocator *alloc)
-{
-    TestServer *s = arg;
-    TestServer *dest = test_server_new("dest");
-    GString *dest_cmdline = g_string_new(qos_get_current_command_line());
-    char *uri = g_strdup_printf("%s%s", "unix:", dest->mig_path);
-    QTestState *to;
-    GSource *source;
-    QDict *rsp;
-    guint8 *log;
-    guint64 size;
-
-    if (!wait_for_fds(s)) {
-        return;
-    }
-
-    size = get_log_size(s);
-    g_assert_cmpint(size, ==, (256 * 1024 * 1024) / (VHOST_LOG_PAGE * 8));
-
-    test_server_listen(dest);
-    g_string_append_printf(dest_cmdline, " -incoming %s", uri);
-    append_mem_opts(dest, dest_cmdline, 256, TEST_MEMFD_AUTO);
-    append_vhost_opts(dest, dest_cmdline, "");
-    to = qtest_init(dest_cmdline->str);
-
-    /* This would be where you call qos_allocate_objects(to, NULL), if you want
-     * to talk to the QVirtioNet object on the destination.
-     */
-
-    source = g_source_new(&test_migrate_source_funcs,
-                          sizeof(TestMigrateSource));
-    ((TestMigrateSource *)source)->src = s;
-    ((TestMigrateSource *)source)->dest = dest;
-    g_source_attach(source, s->context);
-
-    /* slow down migration to have time to fiddle with log */
-    /* TODO: qtest could learn to break on some places */
-    rsp = qmp("{ 'execute': 'migrate_set_speed',"
-              "'arguments': { 'value': 10 } }");
-    g_assert(qdict_haskey(rsp, "return"));
-    qobject_unref(rsp);
-
-    rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri);
-    g_assert(qdict_haskey(rsp, "return"));
-    qobject_unref(rsp);
-
-    wait_for_log_fd(s);
-
-    log = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, s->log_fd, 0);
-    g_assert(log != MAP_FAILED);
-
-    /* modify first page */
-    write_guest_mem(s, 0x42);
-    log[0] = 1;
-    munmap(log, size);
-
-    /* speed things up */
-    rsp = qmp("{ 'execute': 'migrate_set_speed',"
-              "'arguments': { 'value': 0 } }");
-    g_assert(qdict_haskey(rsp, "return"));
-    qobject_unref(rsp);
-
-    qmp_eventwait("STOP");
-    qtest_qmp_eventwait(to, "RESUME");
-
-    g_assert(wait_for_fds(dest));
-    read_guest_mem_server(to, dest);
-
-    g_source_destroy(source);
-    g_source_unref(source);
-
-    qtest_quit(to);
-    test_server_free(dest);
-    g_free(uri);
-}
-
-static void wait_for_rings_started(TestServer *s, size_t count)
-{
-    gint64 end_time;
-
-    g_mutex_lock(&s->data_mutex);
-    end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
-    while (ctpop64(s->rings) != count) {
-        if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
-            /* timeout has passed */
-            g_assert_cmpint(ctpop64(s->rings), ==, count);
-            break;
-        }
-    }
-
-    g_mutex_unlock(&s->data_mutex);
-}
-
-static inline void test_server_connect(TestServer *server)
-{
-    test_server_create_chr(server, ",reconnect=1");
-}
-
-static gboolean
-reconnect_cb(gpointer user_data)
-{
-    TestServer *s = user_data;
-
-    qemu_chr_fe_disconnect(&s->chr);
-
-    return FALSE;
-}
-
-static gpointer
-connect_thread(gpointer data)
-{
-    TestServer *s = data;
-
-    /* wait for qemu to start before first try, to avoid extra warnings */
-    g_usleep(G_USEC_PER_SEC);
-    test_server_connect(s);
-
-    return NULL;
-}
-
-static void *vhost_user_test_setup_reconnect(GString *cmd_line, void *arg)
-{
-    TestServer *s = test_server_new("reconnect");
-
-    g_thread_new("connect", connect_thread, s);
-    append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO);
-    append_vhost_opts(s, cmd_line, ",server");
-
-    g_test_queue_destroy(vhost_user_test_cleanup, s);
-
-    return s;
-}
-
-static void test_reconnect(void *obj, void *arg, QGuestAllocator *alloc)
-{
-    TestServer *s = arg;
-    GSource *src;
-
-    if (!wait_for_fds(s)) {
-        return;
-    }
-
-    wait_for_rings_started(s, 2);
-
-    /* reconnect */
-    s->fds_num = 0;
-    s->rings = 0;
-    src = g_idle_source_new();
-    g_source_set_callback(src, reconnect_cb, s, NULL);
-    g_source_attach(src, s->context);
-    g_source_unref(src);
-    g_assert(wait_for_fds(s));
-    wait_for_rings_started(s, 2);
-}
-
-static void *vhost_user_test_setup_connect_fail(GString *cmd_line, void *arg)
-{
-    TestServer *s = test_server_new("connect-fail");
-
-    s->test_fail = true;
-
-    g_thread_new("connect", connect_thread, s);
-    append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO);
-    append_vhost_opts(s, cmd_line, ",server");
-
-    g_test_queue_destroy(vhost_user_test_cleanup, s);
-
-    return s;
-}
-
-static void *vhost_user_test_setup_flags_mismatch(GString *cmd_line, void *arg)
-{
-    TestServer *s = test_server_new("flags-mismatch");
-
-    s->test_flags = TEST_FLAGS_DISCONNECT;
-
-    g_thread_new("connect", connect_thread, s);
-    append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO);
-    append_vhost_opts(s, cmd_line, ",server");
-
-    g_test_queue_destroy(vhost_user_test_cleanup, s);
-
-    return s;
-}
-
-static void test_vhost_user_started(void *obj, void *arg, QGuestAllocator *alloc)
-{
-    TestServer *s = arg;
-
-    if (!wait_for_fds(s)) {
-        return;
-    }
-    wait_for_rings_started(s, 2);
-}
-
-static void *vhost_user_test_setup_multiqueue(GString *cmd_line, void *arg)
-{
-    TestServer *s = vhost_user_test_setup(cmd_line, arg);
-
-    s->queues = 2;
-    g_string_append_printf(cmd_line,
-                           " -set netdev.hs0.queues=%d"
-                           " -global virtio-net-pci.vectors=%d",
-                           s->queues, s->queues * 2 + 2);
-
-    return s;
-}
-
-static void test_multiqueue(void *obj, void *arg, QGuestAllocator *alloc)
-{
-    TestServer *s = arg;
-
-    wait_for_rings_started(s, s->queues * 2);
-}
-
-static void register_vhost_user_test(void)
-{
-    QOSGraphTestOptions opts = {
-        .before = vhost_user_test_setup,
-        .subprocess = true,
-    };
-
-    qemu_add_opts(&qemu_chardev_opts);
-
-    qos_add_test("vhost-user/read-guest-mem/memfile",
-                 "virtio-net",
-                 test_read_guest_mem, &opts);
-
-    if (qemu_memfd_check(MFD_ALLOW_SEALING)) {
-        opts.before = vhost_user_test_setup_memfd;
-        qos_add_test("vhost-user/read-guest-mem/memfd",
-                     "virtio-net",
-                     test_read_guest_mem, &opts);
-    }
-
-    qos_add_test("vhost-user/migrate",
-                 "virtio-net",
-                 test_migrate, &opts);
-
-    /* keeps failing on build-system since Aug 15 2017 */
-    if (getenv("QTEST_VHOST_USER_FIXME")) {
-        opts.before = vhost_user_test_setup_reconnect;
-        qos_add_test("vhost-user/reconnect", "virtio-net",
-                     test_reconnect, &opts);
-
-        opts.before = vhost_user_test_setup_connect_fail;
-        qos_add_test("vhost-user/connect-fail", "virtio-net",
-                     test_vhost_user_started, &opts);
-
-        opts.before = vhost_user_test_setup_flags_mismatch;
-        qos_add_test("vhost-user/flags-mismatch", "virtio-net",
-                     test_vhost_user_started, &opts);
-    }
-
-    opts.before = vhost_user_test_setup_multiqueue;
-    opts.edge.extra_device_opts = "mq=on";
-    qos_add_test("vhost-user/multiqueue",
-                 "virtio-net",
-                 test_multiqueue, &opts);
-}
-libqos_init(register_vhost_user_test);