f61badf32f
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
411 lines
9.9 KiB
C
411 lines
9.9 KiB
C
/*
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* QTest testcase for the vhost-user
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*
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* Copyright (c) 2014 Virtual Open Systems Sarl.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#define QEMU_GLIB_COMPAT_H
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#include <glib.h>
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#include "libqtest.h"
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#include "qemu/option.h"
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#include "sysemu/char.h"
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#include "sysemu/sysemu.h"
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#include <linux/vhost.h>
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#include <sys/mman.h>
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#include <sys/vfs.h>
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#include <qemu/sockets.h>
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/* GLIB version compatibility flags */
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#if GLIB_CHECK_VERSION(2, 28, 0)
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#define HAVE_MONOTONIC_TIME
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#endif
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#if GLIB_CHECK_VERSION(2, 32, 0)
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#define HAVE_MUTEX_INIT
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#define HAVE_COND_INIT
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#define HAVE_THREAD_NEW
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#endif
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#define QEMU_CMD_ACCEL " -machine accel=tcg"
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#define QEMU_CMD_MEM " -m 512 -object memory-backend-file,id=mem,size=512M,"\
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"mem-path=%s,share=on -numa node,memdev=mem"
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#define QEMU_CMD_CHR " -chardev socket,id=chr0,path=%s"
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#define QEMU_CMD_NETDEV " -netdev vhost-user,id=net0,chardev=chr0,vhostforce"
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#define QEMU_CMD_NET " -device virtio-net-pci,netdev=net0 "
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#define QEMU_CMD_ROM " -option-rom ../pc-bios/pxe-virtio.rom"
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#define QEMU_CMD QEMU_CMD_ACCEL QEMU_CMD_MEM QEMU_CMD_CHR \
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QEMU_CMD_NETDEV QEMU_CMD_NET QEMU_CMD_ROM
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#define HUGETLBFS_MAGIC 0x958458f6
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/*********** FROM hw/virtio/vhost-user.c *************************************/
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#define VHOST_MEMORY_MAX_NREGIONS 8
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typedef enum VhostUserRequest {
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VHOST_USER_NONE = 0,
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VHOST_USER_GET_FEATURES = 1,
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VHOST_USER_SET_FEATURES = 2,
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VHOST_USER_SET_OWNER = 3,
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VHOST_USER_RESET_OWNER = 4,
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VHOST_USER_SET_MEM_TABLE = 5,
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VHOST_USER_SET_LOG_BASE = 6,
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VHOST_USER_SET_LOG_FD = 7,
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VHOST_USER_SET_VRING_NUM = 8,
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VHOST_USER_SET_VRING_ADDR = 9,
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VHOST_USER_SET_VRING_BASE = 10,
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VHOST_USER_GET_VRING_BASE = 11,
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VHOST_USER_SET_VRING_KICK = 12,
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VHOST_USER_SET_VRING_CALL = 13,
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VHOST_USER_SET_VRING_ERR = 14,
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VHOST_USER_MAX
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} VhostUserRequest;
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typedef struct VhostUserMemoryRegion {
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uint64_t guest_phys_addr;
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uint64_t memory_size;
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uint64_t userspace_addr;
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} VhostUserMemoryRegion;
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typedef struct VhostUserMemory {
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uint32_t nregions;
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uint32_t padding;
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VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS];
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} VhostUserMemory;
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typedef struct VhostUserMsg {
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VhostUserRequest request;
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#define VHOST_USER_VERSION_MASK (0x3)
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#define VHOST_USER_REPLY_MASK (0x1<<2)
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uint32_t flags;
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uint32_t size; /* the following payload size */
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union {
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uint64_t u64;
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struct vhost_vring_state state;
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struct vhost_vring_addr addr;
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VhostUserMemory memory;
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};
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} QEMU_PACKED VhostUserMsg;
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static VhostUserMsg m __attribute__ ((unused));
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#define VHOST_USER_HDR_SIZE (sizeof(m.request) \
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+ sizeof(m.flags) \
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+ sizeof(m.size))
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#define VHOST_USER_PAYLOAD_SIZE (sizeof(m) - VHOST_USER_HDR_SIZE)
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/* The version of the protocol we support */
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#define VHOST_USER_VERSION (0x1)
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/*****************************************************************************/
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int fds_num = 0, fds[VHOST_MEMORY_MAX_NREGIONS];
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static VhostUserMemory memory;
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static GMutex *data_mutex;
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static GCond *data_cond;
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static gint64 _get_time(void)
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{
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#ifdef HAVE_MONOTONIC_TIME
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return g_get_monotonic_time();
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#else
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GTimeVal time;
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g_get_current_time(&time);
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return time.tv_sec * G_TIME_SPAN_SECOND + time.tv_usec;
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#endif
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}
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static GMutex *_mutex_new(void)
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{
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GMutex *mutex;
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#ifdef HAVE_MUTEX_INIT
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mutex = g_new(GMutex, 1);
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g_mutex_init(mutex);
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#else
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mutex = g_mutex_new();
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#endif
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return mutex;
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}
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static void _mutex_free(GMutex *mutex)
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{
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#ifdef HAVE_MUTEX_INIT
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g_mutex_clear(mutex);
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g_free(mutex);
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#else
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g_mutex_free(mutex);
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#endif
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}
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static GCond *_cond_new(void)
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{
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GCond *cond;
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#ifdef HAVE_COND_INIT
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cond = g_new(GCond, 1);
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g_cond_init(cond);
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#else
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cond = g_cond_new();
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#endif
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return cond;
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}
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static gboolean _cond_wait_until(GCond *cond, GMutex *mutex, gint64 end_time)
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{
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gboolean ret = FALSE;
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#ifdef HAVE_COND_INIT
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ret = g_cond_wait_until(cond, mutex, end_time);
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#else
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GTimeVal time = { end_time / G_TIME_SPAN_SECOND,
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end_time % G_TIME_SPAN_SECOND };
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ret = g_cond_timed_wait(cond, mutex, &time);
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#endif
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return ret;
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}
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static void _cond_free(GCond *cond)
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{
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#ifdef HAVE_COND_INIT
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g_cond_clear(cond);
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g_free(cond);
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#else
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g_cond_free(cond);
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#endif
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}
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static GThread *_thread_new(const gchar *name, GThreadFunc func, gpointer data)
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{
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GThread *thread = NULL;
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GError *error = NULL;
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#ifdef HAVE_THREAD_NEW
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thread = g_thread_try_new(name, func, data, &error);
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#else
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thread = g_thread_create(func, data, TRUE, &error);
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#endif
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return thread;
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}
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static void read_guest_mem(void)
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{
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uint32_t *guest_mem;
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gint64 end_time;
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int i, j;
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g_mutex_lock(data_mutex);
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end_time = _get_time() + 5 * G_TIME_SPAN_SECOND;
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while (!fds_num) {
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if (!_cond_wait_until(data_cond, data_mutex, end_time)) {
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/* timeout has passed */
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g_assert(fds_num);
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break;
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}
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}
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/* check for sanity */
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g_assert_cmpint(fds_num, >, 0);
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g_assert_cmpint(fds_num, ==, memory.nregions);
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/* iterate all regions */
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for (i = 0; i < fds_num; i++) {
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/* We'll check only the region statring at 0x0*/
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if (memory.regions[i].guest_phys_addr != 0x0) {
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continue;
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}
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g_assert_cmpint(memory.regions[i].memory_size, >, 1024);
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guest_mem = mmap(0, memory.regions[i].memory_size,
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PROT_READ | PROT_WRITE, MAP_SHARED, fds[i], 0);
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for (j = 0; j < 256; j++) {
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uint32_t a = readl(memory.regions[i].guest_phys_addr + j*4);
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uint32_t b = guest_mem[j];
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g_assert_cmpint(a, ==, b);
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}
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munmap(guest_mem, memory.regions[i].memory_size);
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}
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g_assert_cmpint(1, ==, 1);
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g_mutex_unlock(data_mutex);
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}
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static void *thread_function(void *data)
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{
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GMainLoop *loop;
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loop = g_main_loop_new(NULL, FALSE);
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g_main_loop_run(loop);
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return NULL;
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}
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static int chr_can_read(void *opaque)
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{
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return VHOST_USER_HDR_SIZE;
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}
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static void chr_read(void *opaque, const uint8_t *buf, int size)
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{
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CharDriverState *chr = opaque;
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VhostUserMsg msg;
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uint8_t *p = (uint8_t *) &msg;
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int fd;
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if (size != VHOST_USER_HDR_SIZE) {
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g_test_message("Wrong message size received %d\n", size);
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return;
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}
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g_mutex_lock(data_mutex);
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memcpy(p, buf, VHOST_USER_HDR_SIZE);
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if (msg.size) {
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p += VHOST_USER_HDR_SIZE;
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qemu_chr_fe_read_all(chr, p, msg.size);
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}
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switch (msg.request) {
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case VHOST_USER_GET_FEATURES:
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/* send back features to qemu */
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msg.flags |= VHOST_USER_REPLY_MASK;
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msg.size = sizeof(m.u64);
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msg.u64 = 0;
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p = (uint8_t *) &msg;
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qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
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break;
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case VHOST_USER_GET_VRING_BASE:
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/* send back vring base to qemu */
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msg.flags |= VHOST_USER_REPLY_MASK;
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msg.size = sizeof(m.state);
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msg.state.num = 0;
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p = (uint8_t *) &msg;
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qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
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break;
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case VHOST_USER_SET_MEM_TABLE:
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/* received the mem table */
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memcpy(&memory, &msg.memory, sizeof(msg.memory));
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fds_num = qemu_chr_fe_get_msgfds(chr, fds, sizeof(fds) / sizeof(int));
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/* signal the test that it can continue */
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g_cond_signal(data_cond);
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break;
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case VHOST_USER_SET_VRING_KICK:
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case VHOST_USER_SET_VRING_CALL:
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/* consume the fd */
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qemu_chr_fe_get_msgfds(chr, &fd, 1);
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/*
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* This is a non-blocking eventfd.
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* The receive function forces it to be blocking,
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* so revert it back to non-blocking.
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*/
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qemu_set_nonblock(fd);
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break;
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default:
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break;
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}
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g_mutex_unlock(data_mutex);
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}
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static const char *init_hugepagefs(void)
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{
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const char *path;
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struct statfs fs;
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int ret;
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path = getenv("QTEST_HUGETLBFS_PATH");
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if (!path) {
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path = "/hugetlbfs";
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}
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if (access(path, R_OK | W_OK | X_OK)) {
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g_test_message("access on path (%s): %s\n", path, strerror(errno));
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return NULL;
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}
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do {
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ret = statfs(path, &fs);
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} while (ret != 0 && errno == EINTR);
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if (ret != 0) {
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g_test_message("statfs on path (%s): %s\n", path, strerror(errno));
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return NULL;
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}
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if (fs.f_type != HUGETLBFS_MAGIC) {
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g_test_message("Warning: path not on HugeTLBFS: %s\n", path);
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return NULL;
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}
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return path;
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}
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int main(int argc, char **argv)
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{
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QTestState *s = NULL;
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CharDriverState *chr = NULL;
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const char *hugefs = 0;
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char *socket_path = 0;
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char *qemu_cmd = 0;
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char *chr_path = 0;
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int ret;
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g_test_init(&argc, &argv, NULL);
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module_call_init(MODULE_INIT_QOM);
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hugefs = init_hugepagefs();
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if (!hugefs) {
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return 0;
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}
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socket_path = g_strdup_printf("/tmp/vhost-%d.sock", getpid());
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/* create char dev and add read handlers */
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qemu_add_opts(&qemu_chardev_opts);
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chr_path = g_strdup_printf("unix:%s,server,nowait", socket_path);
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chr = qemu_chr_new("chr0", chr_path, NULL);
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g_free(chr_path);
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qemu_chr_add_handlers(chr, chr_can_read, chr_read, NULL, chr);
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/* run the main loop thread so the chardev may operate */
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data_mutex = _mutex_new();
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data_cond = _cond_new();
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_thread_new(NULL, thread_function, NULL);
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qemu_cmd = g_strdup_printf(QEMU_CMD, hugefs, socket_path);
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s = qtest_start(qemu_cmd);
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g_free(qemu_cmd);
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qtest_add_func("/vhost-user/read-guest-mem", read_guest_mem);
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ret = g_test_run();
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if (s) {
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qtest_quit(s);
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}
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/* cleanup */
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unlink(socket_path);
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g_free(socket_path);
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_cond_free(data_cond);
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_mutex_free(data_mutex);
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return ret;
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}
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