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qemu-e2k/tests/qtest/vhost-user-blk-test.c
Thomas Huth b063c290f3 tests/qtest/vhost-user-blk-test: Check whether qemu-storage-daemon is available 
The vhost-user-blk-test currently hangs if QTEST_QEMU_STORAGE_DAEMON_BINARY
points to a non-existing binary. Let's improve this situation by checking
for the availability of the binary first, so we can fail gracefully if
it is not accessible.

Message-Id: <20210811095949.133462-1-thuth@redhat.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Tested-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-08-11 13:40:01 +02:00

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/*
* QTest testcase for Vhost-user Block Device
*
* Based on tests/qtest//virtio-blk-test.c
* Copyright (c) 2014 SUSE LINUX Products GmbH
* Copyright (c) 2014 Marc Marí
* Copyright (c) 2020 Coiby Xu
*
* 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 "qemu/bswap.h"
#include "qemu/module.h"
#include "standard-headers/linux/virtio_blk.h"
#include "standard-headers/linux/virtio_pci.h"
#include "libqos/qgraph.h"
#include "libqos/vhost-user-blk.h"
#include "libqos/libqos-pc.h"
#define TEST_IMAGE_SIZE (64 * 1024 * 1024)
#define QVIRTIO_BLK_TIMEOUT_US (30 * 1000 * 1000)
#define PCI_SLOT_HP 0x06
typedef struct {
pid_t pid;
} QemuStorageDaemonState;
typedef struct QVirtioBlkReq {
uint32_t type;
uint32_t ioprio;
uint64_t sector;
char *data;
uint8_t status;
} QVirtioBlkReq;
#ifdef HOST_WORDS_BIGENDIAN
static const bool host_is_big_endian = true;
#else
static const bool host_is_big_endian; /* false */
#endif
static inline void virtio_blk_fix_request(QVirtioDevice *d, QVirtioBlkReq *req)
{
if (qvirtio_is_big_endian(d) != host_is_big_endian) {
req->type = bswap32(req->type);
req->ioprio = bswap32(req->ioprio);
req->sector = bswap64(req->sector);
}
}
static inline void virtio_blk_fix_dwz_hdr(QVirtioDevice *d,
struct virtio_blk_discard_write_zeroes *dwz_hdr)
{
if (qvirtio_is_big_endian(d) != host_is_big_endian) {
dwz_hdr->sector = bswap64(dwz_hdr->sector);
dwz_hdr->num_sectors = bswap32(dwz_hdr->num_sectors);
dwz_hdr->flags = bswap32(dwz_hdr->flags);
}
}
static uint64_t virtio_blk_request(QGuestAllocator *alloc, QVirtioDevice *d,
QVirtioBlkReq *req, uint64_t data_size)
{
uint64_t addr;
uint8_t status = 0xFF;
QTestState *qts = global_qtest;
switch (req->type) {
case VIRTIO_BLK_T_IN:
case VIRTIO_BLK_T_OUT:
g_assert_cmpuint(data_size % 512, ==, 0);
break;
case VIRTIO_BLK_T_DISCARD:
case VIRTIO_BLK_T_WRITE_ZEROES:
g_assert_cmpuint(data_size %
sizeof(struct virtio_blk_discard_write_zeroes), ==, 0);
break;
default:
g_assert_cmpuint(data_size, ==, 0);
}
addr = guest_alloc(alloc, sizeof(*req) + data_size);
virtio_blk_fix_request(d, req);
qtest_memwrite(qts, addr, req, 16);
qtest_memwrite(qts, addr + 16, req->data, data_size);
qtest_memwrite(qts, addr + 16 + data_size, &status, sizeof(status));
return addr;
}
static void test_invalid_discard_write_zeroes(QVirtioDevice *dev,
QGuestAllocator *alloc,
QTestState *qts,
QVirtQueue *vq,
uint32_t type)
{
QVirtioBlkReq req;
struct virtio_blk_discard_write_zeroes dwz_hdr;
struct virtio_blk_discard_write_zeroes dwz_hdr2[2];
uint64_t req_addr;
uint32_t free_head;
uint8_t status;
/* More than one dwz is not supported */
req.type = type;
req.data = (char *) dwz_hdr2;
dwz_hdr2[0].sector = 0;
dwz_hdr2[0].num_sectors = 1;
dwz_hdr2[0].flags = 0;
dwz_hdr2[1].sector = 1;
dwz_hdr2[1].num_sectors = 1;
dwz_hdr2[1].flags = 0;
virtio_blk_fix_dwz_hdr(dev, &dwz_hdr2[0]);
virtio_blk_fix_dwz_hdr(dev, &dwz_hdr2[1]);
req_addr = virtio_blk_request(alloc, dev, &req, sizeof(dwz_hdr2));
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, sizeof(dwz_hdr2), false, true);
qvirtqueue_add(qts, vq, req_addr + 16 + sizeof(dwz_hdr2), 1, true,
false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 16 + sizeof(dwz_hdr2));
g_assert_cmpint(status, ==, VIRTIO_BLK_S_UNSUPP);
guest_free(alloc, req_addr);
/* num_sectors must be less than config->max_write_zeroes_sectors */
req.type = type;
req.data = (char *) &dwz_hdr;
dwz_hdr.sector = 0;
dwz_hdr.num_sectors = 0xffffffff;
dwz_hdr.flags = 0;
virtio_blk_fix_dwz_hdr(dev, &dwz_hdr);
req_addr = virtio_blk_request(alloc, dev, &req, sizeof(dwz_hdr));
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, sizeof(dwz_hdr), false, true);
qvirtqueue_add(qts, vq, req_addr + 16 + sizeof(dwz_hdr), 1, true,
false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 16 + sizeof(dwz_hdr));
g_assert_cmpint(status, ==, VIRTIO_BLK_S_IOERR);
guest_free(alloc, req_addr);
/* sector must be less than the device capacity */
req.type = type;
req.data = (char *) &dwz_hdr;
dwz_hdr.sector = TEST_IMAGE_SIZE / 512 + 1;
dwz_hdr.num_sectors = 1;
dwz_hdr.flags = 0;
virtio_blk_fix_dwz_hdr(dev, &dwz_hdr);
req_addr = virtio_blk_request(alloc, dev, &req, sizeof(dwz_hdr));
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, sizeof(dwz_hdr), false, true);
qvirtqueue_add(qts, vq, req_addr + 16 + sizeof(dwz_hdr), 1, true,
false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 16 + sizeof(dwz_hdr));
g_assert_cmpint(status, ==, VIRTIO_BLK_S_IOERR);
guest_free(alloc, req_addr);
/* reserved flag bits must be zero */
req.type = type;
req.data = (char *) &dwz_hdr;
dwz_hdr.sector = 0;
dwz_hdr.num_sectors = 1;
dwz_hdr.flags = ~VIRTIO_BLK_WRITE_ZEROES_FLAG_UNMAP;
virtio_blk_fix_dwz_hdr(dev, &dwz_hdr);
req_addr = virtio_blk_request(alloc, dev, &req, sizeof(dwz_hdr));
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, sizeof(dwz_hdr), false, true);
qvirtqueue_add(qts, vq, req_addr + 16 + sizeof(dwz_hdr), 1, true,
false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 16 + sizeof(dwz_hdr));
g_assert_cmpint(status, ==, VIRTIO_BLK_S_UNSUPP);
guest_free(alloc, req_addr);
}
/* Returns the request virtqueue so the caller can perform further tests */
static QVirtQueue *test_basic(QVirtioDevice *dev, QGuestAllocator *alloc)
{
QVirtioBlkReq req;
uint64_t req_addr;
uint64_t capacity;
uint64_t features;
uint32_t free_head;
uint8_t status;
char *data;
QTestState *qts = global_qtest;
QVirtQueue *vq;
features = qvirtio_get_features(dev);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
(1u << VIRTIO_RING_F_EVENT_IDX) |
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev, features);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
vq = qvirtqueue_setup(dev, alloc, 0);
qvirtio_set_driver_ok(dev);
/* Write and read with 3 descriptor layout */
/* Write request */
req.type = VIRTIO_BLK_T_OUT;
req.ioprio = 1;
req.sector = 0;
req.data = g_malloc0(512);
strcpy(req.data, "TEST");
req_addr = virtio_blk_request(alloc, dev, &req, 512);
g_free(req.data);
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, 512, false, true);
qvirtqueue_add(qts, vq, req_addr + 528, 1, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 528);
g_assert_cmpint(status, ==, 0);
guest_free(alloc, req_addr);
/* Read request */
req.type = VIRTIO_BLK_T_IN;
req.ioprio = 1;
req.sector = 0;
req.data = g_malloc0(512);
req_addr = virtio_blk_request(alloc, dev, &req, 512);
g_free(req.data);
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, 512, true, true);
qvirtqueue_add(qts, vq, req_addr + 528, 1, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 528);
g_assert_cmpint(status, ==, 0);
data = g_malloc0(512);
qtest_memread(qts, req_addr + 16, data, 512);
g_assert_cmpstr(data, ==, "TEST");
g_free(data);
guest_free(alloc, req_addr);
if (features & (1u << VIRTIO_BLK_F_WRITE_ZEROES)) {
struct virtio_blk_discard_write_zeroes dwz_hdr;
void *expected;
/*
* WRITE_ZEROES request on the same sector of previous test where
* we wrote "TEST".
*/
req.type = VIRTIO_BLK_T_WRITE_ZEROES;
req.data = (char *) &dwz_hdr;
dwz_hdr.sector = 0;
dwz_hdr.num_sectors = 1;
dwz_hdr.flags = 0;
virtio_blk_fix_dwz_hdr(dev, &dwz_hdr);
req_addr = virtio_blk_request(alloc, dev, &req, sizeof(dwz_hdr));
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, sizeof(dwz_hdr), false, true);
qvirtqueue_add(qts, vq, req_addr + 16 + sizeof(dwz_hdr), 1, true,
false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 16 + sizeof(dwz_hdr));
g_assert_cmpint(status, ==, 0);
guest_free(alloc, req_addr);
/* Read request to check if the sector contains all zeroes */
req.type = VIRTIO_BLK_T_IN;
req.ioprio = 1;
req.sector = 0;
req.data = g_malloc0(512);
req_addr = virtio_blk_request(alloc, dev, &req, 512);
g_free(req.data);
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, 512, true, true);
qvirtqueue_add(qts, vq, req_addr + 528, 1, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 528);
g_assert_cmpint(status, ==, 0);
data = g_malloc(512);
expected = g_malloc0(512);
qtest_memread(qts, req_addr + 16, data, 512);
g_assert_cmpmem(data, 512, expected, 512);
g_free(expected);
g_free(data);
guest_free(alloc, req_addr);
test_invalid_discard_write_zeroes(dev, alloc, qts, vq,
VIRTIO_BLK_T_WRITE_ZEROES);
}
if (features & (1u << VIRTIO_BLK_F_DISCARD)) {
struct virtio_blk_discard_write_zeroes dwz_hdr;
req.type = VIRTIO_BLK_T_DISCARD;
req.data = (char *) &dwz_hdr;
dwz_hdr.sector = 0;
dwz_hdr.num_sectors = 1;
dwz_hdr.flags = 0;
virtio_blk_fix_dwz_hdr(dev, &dwz_hdr);
req_addr = virtio_blk_request(alloc, dev, &req, sizeof(dwz_hdr));
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, sizeof(dwz_hdr), false, true);
qvirtqueue_add(qts, vq, req_addr + 16 + sizeof(dwz_hdr),
1, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 16 + sizeof(dwz_hdr));
g_assert_cmpint(status, ==, 0);
guest_free(alloc, req_addr);
test_invalid_discard_write_zeroes(dev, alloc, qts, vq,
VIRTIO_BLK_T_DISCARD);
}
if (features & (1u << VIRTIO_F_ANY_LAYOUT)) {
/* Write and read with 2 descriptor layout */
/* Write request */
req.type = VIRTIO_BLK_T_OUT;
req.ioprio = 1;
req.sector = 1;
req.data = g_malloc0(512);
strcpy(req.data, "TEST");
req_addr = virtio_blk_request(alloc, dev, &req, 512);
g_free(req.data);
free_head = qvirtqueue_add(qts, vq, req_addr, 528, false, true);
qvirtqueue_add(qts, vq, req_addr + 528, 1, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 528);
g_assert_cmpint(status, ==, 0);
guest_free(alloc, req_addr);
/* Read request */
req.type = VIRTIO_BLK_T_IN;
req.ioprio = 1;
req.sector = 1;
req.data = g_malloc0(512);
req_addr = virtio_blk_request(alloc, dev, &req, 512);
g_free(req.data);
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, 513, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 528);
g_assert_cmpint(status, ==, 0);
data = g_malloc0(512);
qtest_memread(qts, req_addr + 16, data, 512);
g_assert_cmpstr(data, ==, "TEST");
g_free(data);
guest_free(alloc, req_addr);
}
return vq;
}
static void basic(void *obj, void *data, QGuestAllocator *t_alloc)
{
QVhostUserBlk *blk_if = obj;
QVirtQueue *vq;
vq = test_basic(blk_if->vdev, t_alloc);
qvirtqueue_cleanup(blk_if->vdev->bus, vq, t_alloc);
}
static void indirect(void *obj, void *u_data, QGuestAllocator *t_alloc)
{
QVirtQueue *vq;
QVhostUserBlk *blk_if = obj;
QVirtioDevice *dev = blk_if->vdev;
QVirtioBlkReq req;
QVRingIndirectDesc *indirect;
uint64_t req_addr;
uint64_t capacity;
uint64_t features;
uint32_t free_head;
uint8_t status;
char *data;
QTestState *qts = global_qtest;
features = qvirtio_get_features(dev);
g_assert_cmphex(features & (1u << VIRTIO_RING_F_INDIRECT_DESC), !=, 0);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_EVENT_IDX) |
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev, features);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
vq = qvirtqueue_setup(dev, t_alloc, 0);
qvirtio_set_driver_ok(dev);
/* Write request */
req.type = VIRTIO_BLK_T_OUT;
req.ioprio = 1;
req.sector = 0;
req.data = g_malloc0(512);
strcpy(req.data, "TEST");
req_addr = virtio_blk_request(t_alloc, dev, &req, 512);
g_free(req.data);
indirect = qvring_indirect_desc_setup(qts, dev, t_alloc, 2);
qvring_indirect_desc_add(dev, qts, indirect, req_addr, 528, false);
qvring_indirect_desc_add(dev, qts, indirect, req_addr + 528, 1, true);
free_head = qvirtqueue_add_indirect(qts, vq, indirect);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 528);
g_assert_cmpint(status, ==, 0);
g_free(indirect);
guest_free(t_alloc, req_addr);
/* Read request */
req.type = VIRTIO_BLK_T_IN;
req.ioprio = 1;
req.sector = 0;
req.data = g_malloc0(512);
strcpy(req.data, "TEST");
req_addr = virtio_blk_request(t_alloc, dev, &req, 512);
g_free(req.data);
indirect = qvring_indirect_desc_setup(qts, dev, t_alloc, 2);
qvring_indirect_desc_add(dev, qts, indirect, req_addr, 16, false);
qvring_indirect_desc_add(dev, qts, indirect, req_addr + 16, 513, true);
free_head = qvirtqueue_add_indirect(qts, vq, indirect);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
status = readb(req_addr + 528);
g_assert_cmpint(status, ==, 0);
data = g_malloc0(512);
qtest_memread(qts, req_addr + 16, data, 512);
g_assert_cmpstr(data, ==, "TEST");
g_free(data);
g_free(indirect);
guest_free(t_alloc, req_addr);
qvirtqueue_cleanup(dev->bus, vq, t_alloc);
}
static void idx(void *obj, void *u_data, QGuestAllocator *t_alloc)
{
QVirtQueue *vq;
QVhostUserBlkPCI *blk = obj;
QVirtioPCIDevice *pdev = &blk->pci_vdev;
QVirtioDevice *dev = &pdev->vdev;
QVirtioBlkReq req;
uint64_t req_addr;
uint64_t capacity;
uint64_t features;
uint32_t free_head;
uint32_t write_head;
uint32_t desc_idx;
uint8_t status;
char *data;
QOSGraphObject *blk_object = obj;
QPCIDevice *pci_dev = blk_object->get_driver(blk_object, "pci-device");
QTestState *qts = global_qtest;
if (qpci_check_buggy_msi(pci_dev)) {
return;
}
qpci_msix_enable(pdev->pdev);
qvirtio_pci_set_msix_configuration_vector(pdev, t_alloc, 0);
features = qvirtio_get_features(dev);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
(1u << VIRTIO_F_NOTIFY_ON_EMPTY) |
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev, features);
capacity = qvirtio_config_readq(dev, 0);
g_assert_cmpint(capacity, ==, TEST_IMAGE_SIZE / 512);
vq = qvirtqueue_setup(dev, t_alloc, 0);
qvirtqueue_pci_msix_setup(pdev, (QVirtQueuePCI *)vq, t_alloc, 1);
qvirtio_set_driver_ok(dev);
/*
* libvhost-user signals the call fd in VHOST_USER_SET_VRING_CALL, make
* sure to wait for the isr here so we don't race and confuse it later on.
*/
qvirtio_wait_queue_isr(qts, dev, vq, QVIRTIO_BLK_TIMEOUT_US);
/* Write request */
req.type = VIRTIO_BLK_T_OUT;
req.ioprio = 1;
req.sector = 0;
req.data = g_malloc0(512);
strcpy(req.data, "TEST");
req_addr = virtio_blk_request(t_alloc, dev, &req, 512);
g_free(req.data);
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, 512, false, true);
qvirtqueue_add(qts, vq, req_addr + 528, 1, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
qvirtio_wait_used_elem(qts, dev, vq, free_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
/* Write request */
req.type = VIRTIO_BLK_T_OUT;
req.ioprio = 1;
req.sector = 1;
req.data = g_malloc0(512);
strcpy(req.data, "TEST");
req_addr = virtio_blk_request(t_alloc, dev, &req, 512);
g_free(req.data);
/* Notify after processing the third request */
qvirtqueue_set_used_event(qts, vq, 2);
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, 512, false, true);
qvirtqueue_add(qts, vq, req_addr + 528, 1, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
write_head = free_head;
/* No notification expected */
status = qvirtio_wait_status_byte_no_isr(qts, dev,
vq, req_addr + 528,
QVIRTIO_BLK_TIMEOUT_US);
g_assert_cmpint(status, ==, 0);
guest_free(t_alloc, req_addr);
/* Read request */
req.type = VIRTIO_BLK_T_IN;
req.ioprio = 1;
req.sector = 1;
req.data = g_malloc0(512);
req_addr = virtio_blk_request(t_alloc, dev, &req, 512);
g_free(req.data);
free_head = qvirtqueue_add(qts, vq, req_addr, 16, false, true);
qvirtqueue_add(qts, vq, req_addr + 16, 512, true, true);
qvirtqueue_add(qts, vq, req_addr + 528, 1, true, false);
qvirtqueue_kick(qts, dev, vq, free_head);
/* We get just one notification for both requests */
qvirtio_wait_used_elem(qts, dev, vq, write_head, NULL,
QVIRTIO_BLK_TIMEOUT_US);
g_assert(qvirtqueue_get_buf(qts, vq, &desc_idx, NULL));
g_assert_cmpint(desc_idx, ==, free_head);
status = readb(req_addr + 528);
g_assert_cmpint(status, ==, 0);
data = g_malloc0(512);
qtest_memread(qts, req_addr + 16, data, 512);
g_assert_cmpstr(data, ==, "TEST");
g_free(data);
guest_free(t_alloc, req_addr);
/* End test */
qpci_msix_disable(pdev->pdev);
qvirtqueue_cleanup(dev->bus, vq, t_alloc);
}
static void pci_hotplug(void *obj, void *data, QGuestAllocator *t_alloc)
{
QVirtioPCIDevice *dev1 = obj;
QVirtioPCIDevice *dev;
QTestState *qts = dev1->pdev->bus->qts;
/* plug secondary disk */
qtest_qmp_device_add(qts, "vhost-user-blk-pci", "drv1",
"{'addr': %s, 'chardev': 'char2'}",
stringify(PCI_SLOT_HP) ".0");
dev = virtio_pci_new(dev1->pdev->bus,
&(QPCIAddress) { .devfn = QPCI_DEVFN(PCI_SLOT_HP, 0)
});
g_assert_nonnull(dev);
g_assert_cmpint(dev->vdev.device_type, ==, VIRTIO_ID_BLOCK);
qvirtio_pci_device_disable(dev);
qos_object_destroy((QOSGraphObject *)dev);
/* unplug secondary disk */
qpci_unplug_acpi_device_test(qts, "drv1", PCI_SLOT_HP);
}
static void multiqueue(void *obj, void *data, QGuestAllocator *t_alloc)
{
QVirtioPCIDevice *pdev1 = obj;
QVirtioDevice *dev1 = &pdev1->vdev;
QVirtioPCIDevice *pdev8;
QVirtioDevice *dev8;
QTestState *qts = pdev1->pdev->bus->qts;
uint64_t features;
uint16_t num_queues;
/*
* The primary device has 1 queue and VIRTIO_BLK_F_MQ is not enabled. The
* VIRTIO specification allows VIRTIO_BLK_F_MQ to be enabled when there is
* only 1 virtqueue, but --device vhost-user-blk-pci doesn't do this (which
* is also spec-compliant).
*/
features = qvirtio_get_features(dev1);
g_assert_cmpint(features & (1u << VIRTIO_BLK_F_MQ), ==, 0);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
(1u << VIRTIO_F_NOTIFY_ON_EMPTY) |
(1u << VIRTIO_BLK_F_SCSI));
qvirtio_set_features(dev1, features);
/* Hotplug a secondary device with 8 queues */
qtest_qmp_device_add(qts, "vhost-user-blk-pci", "drv1",
"{'addr': %s, 'chardev': 'char2', 'num-queues': 8}",
stringify(PCI_SLOT_HP) ".0");
pdev8 = virtio_pci_new(pdev1->pdev->bus,
&(QPCIAddress) {
.devfn = QPCI_DEVFN(PCI_SLOT_HP, 0)
});
g_assert_nonnull(pdev8);
g_assert_cmpint(pdev8->vdev.device_type, ==, VIRTIO_ID_BLOCK);
qos_object_start_hw(&pdev8->obj);
dev8 = &pdev8->vdev;
features = qvirtio_get_features(dev8);
g_assert_cmpint(features & (1u << VIRTIO_BLK_F_MQ),
==,
(1u << VIRTIO_BLK_F_MQ));
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
(1u << VIRTIO_F_NOTIFY_ON_EMPTY) |
(1u << VIRTIO_BLK_F_SCSI) |
(1u << VIRTIO_BLK_F_MQ));
qvirtio_set_features(dev8, features);
num_queues = qvirtio_config_readw(dev8,
offsetof(struct virtio_blk_config, num_queues));
g_assert_cmpint(num_queues, ==, 8);
qvirtio_pci_device_disable(pdev8);
qos_object_destroy(&pdev8->obj);
/* unplug secondary disk */
qpci_unplug_acpi_device_test(qts, "drv1", PCI_SLOT_HP);
}
/*
* Check that setting the vring addr on a non-existent virtqueue does
* not crash.
*/
static void test_nonexistent_virtqueue(void *obj, void *data,
QGuestAllocator *t_alloc)
{
QVhostUserBlkPCI *blk = obj;
QVirtioPCIDevice *pdev = &blk->pci_vdev;
QPCIBar bar0;
QPCIDevice *dev;
dev = qpci_device_find(pdev->pdev->bus, QPCI_DEVFN(4, 0));
g_assert(dev != NULL);
qpci_device_enable(dev);
bar0 = qpci_iomap(dev, 0, NULL);
qpci_io_writeb(dev, bar0, VIRTIO_PCI_QUEUE_SEL, 2);
qpci_io_writel(dev, bar0, VIRTIO_PCI_QUEUE_PFN, 1);
g_free(dev);
}
static const char *qtest_qemu_storage_daemon_binary(void)
{
const char *qemu_storage_daemon_bin;
qemu_storage_daemon_bin = getenv("QTEST_QEMU_STORAGE_DAEMON_BINARY");
if (!qemu_storage_daemon_bin) {
fprintf(stderr, "Environment variable "
"QTEST_QEMU_STORAGE_DAEMON_BINARY required\n");
exit(0);
}
/* If we've got a path to the binary, check whether we can access it */
if (strchr(qemu_storage_daemon_bin, '/') &&
access(qemu_storage_daemon_bin, X_OK) != 0) {
fprintf(stderr, "ERROR: '%s' is not accessible\n",
qemu_storage_daemon_bin);
exit(1);
}
return qemu_storage_daemon_bin;
}
/* g_test_queue_destroy() cleanup function for files */
static void destroy_file(void *path)
{
unlink(path);
g_free(path);
qos_invalidate_command_line();
}
static char *drive_create(void)
{
int fd, ret;
/** vhost-user-blk won't recognize drive located in /tmp */
char *t_path = g_strdup("qtest.XXXXXX");
/** Create a temporary raw image */
fd = mkstemp(t_path);
g_assert_cmpint(fd, >=, 0);
ret = ftruncate(fd, TEST_IMAGE_SIZE);
g_assert_cmpint(ret, ==, 0);
close(fd);
g_test_queue_destroy(destroy_file, t_path);
return t_path;
}
static char *create_listen_socket(int *fd)
{
int tmp_fd;
char *path;
/* No race because our pid makes the path unique */
path = g_strdup_printf("/tmp/qtest-%d-sock.XXXXXX", getpid());
tmp_fd = mkstemp(path);
g_assert_cmpint(tmp_fd, >=, 0);
close(tmp_fd);
unlink(path);
*fd = qtest_socket_server(path);
g_test_queue_destroy(destroy_file, path);
return path;
}
/*
* g_test_queue_destroy() and qtest_add_abrt_handler() cleanup function for
* qemu-storage-daemon.
*/
static void quit_storage_daemon(void *data)
{
QemuStorageDaemonState *qsd = data;
int wstatus;
pid_t pid;
/*
* If we were invoked as a g_test_queue_destroy() cleanup function we need
* to remove the abrt handler to avoid being called again if the code below
* aborts. Also, we must not leave the abrt handler installed after
* cleanup.
*/
qtest_remove_abrt_handler(data);
/* Before quitting storage-daemon, quit qemu to avoid dubious messages */
qtest_kill_qemu(global_qtest);
kill(qsd->pid, SIGTERM);
pid = waitpid(qsd->pid, &wstatus, 0);
g_assert_cmpint(pid, ==, qsd->pid);
if (!WIFEXITED(wstatus)) {
fprintf(stderr, "%s: expected qemu-storage-daemon to exit\n",
__func__);
abort();
}
if (WEXITSTATUS(wstatus) != 0) {
fprintf(stderr, "%s: expected qemu-storage-daemon to exit "
"successfully, got %d\n",
__func__, WEXITSTATUS(wstatus));
abort();
}
g_free(data);
}
static void start_vhost_user_blk(GString *cmd_line, int vus_instances,
int num_queues)
{
const char *vhost_user_blk_bin = qtest_qemu_storage_daemon_binary();
int i;
gchar *img_path;
GString *storage_daemon_command = g_string_new(NULL);
QemuStorageDaemonState *qsd;
g_string_append_printf(storage_daemon_command,
"exec %s ",
vhost_user_blk_bin);
g_string_append_printf(cmd_line,
" -object memory-backend-memfd,id=mem,size=256M,share=on "
" -M memory-backend=mem -m 256M ");
for (i = 0; i < vus_instances; i++) {
int fd;
char *sock_path = create_listen_socket(&fd);
/* create image file */
img_path = drive_create();
g_string_append_printf(storage_daemon_command,
"--blockdev driver=file,node-name=disk%d,filename=%s "
"--export type=vhost-user-blk,id=disk%d,addr.type=unix,addr.path=%s,"
"node-name=disk%i,writable=on,num-queues=%d ",
i, img_path, i, sock_path, i, num_queues);
g_string_append_printf(cmd_line, "-chardev socket,id=char%d,path=%s ",
i + 1, sock_path);
}
g_test_message("starting vhost-user backend: %s",
storage_daemon_command->str);
pid_t pid = fork();
if (pid == 0) {
/*
* Close standard file descriptors so tap-driver.pl pipe detects when
* our parent terminates.
*/
close(0);
close(1);
open("/dev/null", O_RDONLY);
open("/dev/null", O_WRONLY);
execlp("/bin/sh", "sh", "-c", storage_daemon_command->str, NULL);
exit(1);
}
g_string_free(storage_daemon_command, true);
qsd = g_new(QemuStorageDaemonState, 1);
qsd->pid = pid;
/* Make sure qemu-storage-daemon is stopped */
qtest_add_abrt_handler(quit_storage_daemon, qsd);
g_test_queue_destroy(quit_storage_daemon, qsd);
}
static void *vhost_user_blk_test_setup(GString *cmd_line, void *arg)
{
start_vhost_user_blk(cmd_line, 1, 1);
return arg;
}
/*
* Setup for hotplug.
*
* Since vhost-user server only serves one vhost-user client one time,
* another exprot
*
*/
static void *vhost_user_blk_hotplug_test_setup(GString *cmd_line, void *arg)
{
/* "-chardev socket,id=char2" is used for pci_hotplug*/
start_vhost_user_blk(cmd_line, 2, 1);
return arg;
}
static void *vhost_user_blk_multiqueue_test_setup(GString *cmd_line, void *arg)
{
start_vhost_user_blk(cmd_line, 2, 8);
return arg;
}
static void register_vhost_user_blk_test(void)
{
QOSGraphTestOptions opts = {
.before = vhost_user_blk_test_setup,
};
/*
* tests for vhost-user-blk and vhost-user-blk-pci
* The tests are borrowed from tests/virtio-blk-test.c. But some tests
* regarding block_resize don't work for vhost-user-blk.
* vhost-user-blk device doesn't have -drive, so tests containing
* block_resize are also abandoned,
* - config
* - resize
*/
qos_add_test("basic", "vhost-user-blk", basic, &opts);
qos_add_test("indirect", "vhost-user-blk", indirect, &opts);
qos_add_test("idx", "vhost-user-blk-pci", idx, &opts);
qos_add_test("nxvirtq", "vhost-user-blk-pci",
test_nonexistent_virtqueue, &opts);
opts.before = vhost_user_blk_hotplug_test_setup;
qos_add_test("hotplug", "vhost-user-blk-pci", pci_hotplug, &opts);
opts.before = vhost_user_blk_multiqueue_test_setup;
qos_add_test("multiqueue", "vhost-user-blk-pci", multiqueue, &opts);
}
libqos_init(register_vhost_user_blk_test);
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