2011-02-11 16:40:59 +08:00
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/*
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* Virtio SCSI HBA
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*
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* Copyright IBM, Corp. 2010
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* Copyright Red Hat, Inc. 2011
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*
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* Authors:
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* Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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* Paolo Bonzini <pbonzini@redhat.com>
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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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2016-01-27 02:17:07 +08:00
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#include "qemu/osdep.h"
|
include/qemu/osdep.h: Don't include qapi/error.h
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef. Since then, we've moved to include qemu/osdep.h
everywhere. Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h. That's in excess of
100KiB of crap most .c files don't actually need.
Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h. Include qapi/error.h in .c files that need it and don't
get it now. Include qapi-types.h in qom/object.h for uint16List.
Update scripts/clean-includes accordingly. Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h
comment quoted above similarly.
This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third. Unfortunately, the number depending on
qapi-types.h shrinks only a little. More work is needed for that one.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
[Fix compilation without the spice devel packages. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-14 16:01:28 +08:00
|
|
|
#include "qapi/error.h"
|
2015-02-17 05:36:20 +08:00
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|
|
#include "standard-headers/linux/virtio_ids.h"
|
2013-02-06 00:06:20 +08:00
|
|
|
#include "hw/virtio/virtio-scsi.h"
|
2013-02-04 18:37:52 +08:00
|
|
|
#include "qemu/error-report.h"
|
2014-06-10 22:21:18 +08:00
|
|
|
#include "qemu/iov.h"
|
2014-10-07 19:59:18 +08:00
|
|
|
#include "sysemu/block-backend.h"
|
2016-06-23 01:11:19 +08:00
|
|
|
#include "hw/scsi/scsi.h"
|
|
|
|
#include "block/scsi.h"
|
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|
|
#include "hw/virtio/virtio-bus.h"
|
2014-06-25 01:48:53 +08:00
|
|
|
#include "hw/virtio/virtio-access.h"
|
2011-02-11 16:40:59 +08:00
|
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|
|
2011-11-14 23:58:41 +08:00
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|
|
static inline int virtio_scsi_get_lun(uint8_t *lun)
|
|
|
|
{
|
|
|
|
return ((lun[2] << 8) | lun[3]) & 0x3FFF;
|
|
|
|
}
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|
static inline SCSIDevice *virtio_scsi_device_find(VirtIOSCSI *s, uint8_t *lun)
|
|
|
|
{
|
|
|
|
if (lun[0] != 1) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
if (lun[2] != 0 && !(lun[2] >= 0x40 && lun[2] < 0x80)) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return scsi_device_find(&s->bus, 0, lun[1], virtio_scsi_get_lun(lun));
|
|
|
|
}
|
|
|
|
|
2016-02-04 22:26:51 +08:00
|
|
|
void virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq, VirtIOSCSIReq *req)
|
2014-06-10 22:21:18 +08:00
|
|
|
{
|
2016-02-15 01:17:10 +08:00
|
|
|
const size_t zero_skip =
|
|
|
|
offsetof(VirtIOSCSIReq, resp_iov) + sizeof(req->resp_iov);
|
2014-06-10 22:21:18 +08:00
|
|
|
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|
|
|
req->vq = vq;
|
|
|
|
req->dev = s;
|
|
|
|
qemu_sglist_init(&req->qsgl, DEVICE(s), 8, &address_space_memory);
|
2014-06-10 22:40:31 +08:00
|
|
|
qemu_iovec_init(&req->resp_iov, 1);
|
2014-09-16 15:20:18 +08:00
|
|
|
memset((uint8_t *)req + zero_skip, 0, sizeof(*req) - zero_skip);
|
2014-06-10 22:21:18 +08:00
|
|
|
}
|
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|
2014-08-06 13:35:04 +08:00
|
|
|
void virtio_scsi_free_req(VirtIOSCSIReq *req)
|
2014-06-10 22:21:18 +08:00
|
|
|
{
|
2014-06-10 22:40:31 +08:00
|
|
|
qemu_iovec_destroy(&req->resp_iov);
|
2014-06-10 22:21:18 +08:00
|
|
|
qemu_sglist_destroy(&req->qsgl);
|
2015-10-01 18:59:01 +08:00
|
|
|
g_free(req);
|
2014-06-10 22:21:18 +08:00
|
|
|
}
|
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|
2011-02-13 18:55:52 +08:00
|
|
|
static void virtio_scsi_complete_req(VirtIOSCSIReq *req)
|
|
|
|
{
|
|
|
|
VirtIOSCSI *s = req->dev;
|
|
|
|
VirtQueue *vq = req->vq;
|
2013-03-21 22:15:18 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(s);
|
2014-06-10 22:40:31 +08:00
|
|
|
|
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|
qemu_iovec_from_buf(&req->resp_iov, 0, &req->resp, req->resp_size);
|
2016-02-15 01:17:10 +08:00
|
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|
virtqueue_push(vq, &req->elem, req->qsgl.size + req->resp_iov.size);
|
2016-04-06 18:16:24 +08:00
|
|
|
if (s->dataplane_started && !s->dataplane_fenced) {
|
2016-02-15 01:17:10 +08:00
|
|
|
virtio_scsi_dataplane_notify(vdev, req);
|
2014-09-23 15:49:25 +08:00
|
|
|
} else {
|
|
|
|
virtio_notify(vdev, vq);
|
|
|
|
}
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|
2011-02-13 18:55:52 +08:00
|
|
|
if (req->sreq) {
|
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|
|
req->sreq->hba_private = NULL;
|
|
|
|
scsi_req_unref(req->sreq);
|
|
|
|
}
|
2014-06-10 22:21:18 +08:00
|
|
|
virtio_scsi_free_req(req);
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
|
|
|
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
static void virtio_scsi_bad_req(VirtIOSCSIReq *req)
|
2011-02-13 18:55:52 +08:00
|
|
|
{
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
virtio_error(VIRTIO_DEVICE(req->dev), "wrong size for virtio-scsi headers");
|
|
|
|
virtqueue_detach_element(req->vq, &req->elem, 0);
|
|
|
|
virtio_scsi_free_req(req);
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
|
|
|
|
2014-06-10 22:39:24 +08:00
|
|
|
static size_t qemu_sgl_concat(VirtIOSCSIReq *req, struct iovec *iov,
|
|
|
|
hwaddr *addr, int num, size_t skip)
|
2011-02-13 18:55:52 +08:00
|
|
|
{
|
2013-06-03 20:17:19 +08:00
|
|
|
QEMUSGList *qsgl = &req->qsgl;
|
2014-06-10 22:39:24 +08:00
|
|
|
size_t copied = 0;
|
|
|
|
|
|
|
|
while (num) {
|
|
|
|
if (skip >= iov->iov_len) {
|
|
|
|
skip -= iov->iov_len;
|
|
|
|
} else {
|
|
|
|
qemu_sglist_add(qsgl, *addr + skip, iov->iov_len - skip);
|
|
|
|
copied += iov->iov_len - skip;
|
|
|
|
skip = 0;
|
|
|
|
}
|
|
|
|
iov++;
|
|
|
|
addr++;
|
|
|
|
num--;
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
2014-06-10 22:39:24 +08:00
|
|
|
|
|
|
|
assert(skip == 0);
|
|
|
|
return copied;
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
|
|
|
|
2014-06-10 22:21:18 +08:00
|
|
|
static int virtio_scsi_parse_req(VirtIOSCSIReq *req,
|
|
|
|
unsigned req_size, unsigned resp_size)
|
2011-02-13 18:55:52 +08:00
|
|
|
{
|
2014-11-07 21:00:02 +08:00
|
|
|
VirtIODevice *vdev = (VirtIODevice *) req->dev;
|
2014-06-10 22:40:31 +08:00
|
|
|
size_t in_size, out_size;
|
2014-06-10 22:21:18 +08:00
|
|
|
|
2014-06-10 22:40:31 +08:00
|
|
|
if (iov_to_buf(req->elem.out_sg, req->elem.out_num, 0,
|
|
|
|
&req->req, req_size) < req_size) {
|
2014-06-10 22:21:18 +08:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2014-06-10 22:40:31 +08:00
|
|
|
if (qemu_iovec_concat_iov(&req->resp_iov,
|
|
|
|
req->elem.in_sg, req->elem.in_num, 0,
|
|
|
|
resp_size) < resp_size) {
|
2014-06-10 22:21:18 +08:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
2014-11-07 21:00:02 +08:00
|
|
|
|
2014-06-10 22:58:19 +08:00
|
|
|
req->resp_size = resp_size;
|
2011-02-13 18:55:52 +08:00
|
|
|
|
2014-11-07 21:00:02 +08:00
|
|
|
/* Old BIOSes left some padding by mistake after the req_size/resp_size.
|
|
|
|
* As a workaround, always consider the first buffer as the virtio-scsi
|
|
|
|
* request/response, making the payload start at the second element
|
|
|
|
* of the iovec.
|
|
|
|
*
|
|
|
|
* The actual length of the response header, stored in req->resp_size,
|
|
|
|
* does not change.
|
|
|
|
*
|
|
|
|
* TODO: always disable this workaround for virtio 1.0 devices.
|
|
|
|
*/
|
2015-08-17 17:48:29 +08:00
|
|
|
if (!virtio_vdev_has_feature(vdev, VIRTIO_F_ANY_LAYOUT)) {
|
2015-03-13 15:55:54 +08:00
|
|
|
if (req->elem.out_num) {
|
|
|
|
req_size = req->elem.out_sg[0].iov_len;
|
|
|
|
}
|
|
|
|
if (req->elem.in_num) {
|
|
|
|
resp_size = req->elem.in_sg[0].iov_len;
|
|
|
|
}
|
2014-11-07 21:00:02 +08:00
|
|
|
}
|
|
|
|
|
2014-06-10 22:40:31 +08:00
|
|
|
out_size = qemu_sgl_concat(req, req->elem.out_sg,
|
|
|
|
&req->elem.out_addr[0], req->elem.out_num,
|
|
|
|
req_size);
|
|
|
|
in_size = qemu_sgl_concat(req, req->elem.in_sg,
|
|
|
|
&req->elem.in_addr[0], req->elem.in_num,
|
|
|
|
resp_size);
|
|
|
|
|
|
|
|
if (out_size && in_size) {
|
|
|
|
return -ENOTSUP;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (out_size) {
|
|
|
|
req->mode = SCSI_XFER_TO_DEV;
|
|
|
|
} else if (in_size) {
|
|
|
|
req->mode = SCSI_XFER_FROM_DEV;
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
2014-06-10 22:21:18 +08:00
|
|
|
|
|
|
|
return 0;
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static VirtIOSCSIReq *virtio_scsi_pop_req(VirtIOSCSI *s, VirtQueue *vq)
|
|
|
|
{
|
2016-02-04 22:26:51 +08:00
|
|
|
VirtIOSCSICommon *vs = (VirtIOSCSICommon *)s;
|
|
|
|
VirtIOSCSIReq *req;
|
|
|
|
|
|
|
|
req = virtqueue_pop(vq, sizeof(VirtIOSCSIReq) + vs->cdb_size);
|
|
|
|
if (!req) {
|
2011-02-13 18:55:52 +08:00
|
|
|
return NULL;
|
|
|
|
}
|
2016-02-04 22:26:51 +08:00
|
|
|
virtio_scsi_init_req(s, vq, req);
|
2011-02-13 18:55:52 +08:00
|
|
|
return req;
|
|
|
|
}
|
|
|
|
|
2011-12-02 22:23:15 +08:00
|
|
|
static void virtio_scsi_save_request(QEMUFile *f, SCSIRequest *sreq)
|
|
|
|
{
|
|
|
|
VirtIOSCSIReq *req = sreq->hba_private;
|
2013-03-29 09:08:15 +08:00
|
|
|
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(req->dev);
|
2016-05-21 02:04:21 +08:00
|
|
|
uint32_t n = virtio_get_queue_index(req->vq) - 2;
|
2011-12-02 22:23:15 +08:00
|
|
|
|
2013-03-29 09:08:15 +08:00
|
|
|
assert(n < vs->conf.num_queues);
|
2012-04-06 16:20:43 +08:00
|
|
|
qemu_put_be32s(f, &n);
|
2016-01-31 18:28:59 +08:00
|
|
|
qemu_put_virtqueue_element(f, &req->elem);
|
2011-12-02 22:23:15 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void *virtio_scsi_load_request(QEMUFile *f, SCSIRequest *sreq)
|
|
|
|
{
|
|
|
|
SCSIBus *bus = sreq->bus;
|
|
|
|
VirtIOSCSI *s = container_of(bus, VirtIOSCSI, bus);
|
2013-03-29 09:08:15 +08:00
|
|
|
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
|
2011-12-02 22:23:15 +08:00
|
|
|
VirtIOSCSIReq *req;
|
2012-04-06 16:20:43 +08:00
|
|
|
uint32_t n;
|
2011-12-02 22:23:15 +08:00
|
|
|
|
2012-04-06 16:20:43 +08:00
|
|
|
qemu_get_be32s(f, &n);
|
2013-03-29 09:08:15 +08:00
|
|
|
assert(n < vs->conf.num_queues);
|
2016-01-31 18:28:59 +08:00
|
|
|
req = qemu_get_virtqueue_element(f, sizeof(VirtIOSCSIReq) + vs->cdb_size);
|
2016-02-04 22:26:51 +08:00
|
|
|
virtio_scsi_init_req(s, vs->cmd_vqs[n], req);
|
2015-10-27 16:22:13 +08:00
|
|
|
|
2014-06-10 22:21:18 +08:00
|
|
|
if (virtio_scsi_parse_req(req, sizeof(VirtIOSCSICmdReq) + vs->cdb_size,
|
|
|
|
sizeof(VirtIOSCSICmdResp) + vs->sense_size) < 0) {
|
|
|
|
error_report("invalid SCSI request migration data");
|
|
|
|
exit(1);
|
|
|
|
}
|
2011-12-02 22:23:15 +08:00
|
|
|
|
|
|
|
scsi_req_ref(sreq);
|
|
|
|
req->sreq = sreq;
|
|
|
|
if (req->sreq->cmd.mode != SCSI_XFER_NONE) {
|
2014-06-10 22:40:31 +08:00
|
|
|
assert(req->sreq->cmd.mode == req->mode);
|
2011-12-02 22:23:15 +08:00
|
|
|
}
|
|
|
|
return req;
|
|
|
|
}
|
|
|
|
|
2014-09-30 11:40:23 +08:00
|
|
|
typedef struct {
|
|
|
|
Notifier notifier;
|
|
|
|
VirtIOSCSIReq *tmf_req;
|
|
|
|
} VirtIOSCSICancelNotifier;
|
|
|
|
|
|
|
|
static void virtio_scsi_cancel_notify(Notifier *notifier, void *data)
|
|
|
|
{
|
|
|
|
VirtIOSCSICancelNotifier *n = container_of(notifier,
|
|
|
|
VirtIOSCSICancelNotifier,
|
|
|
|
notifier);
|
|
|
|
|
|
|
|
if (--n->tmf_req->remaining == 0) {
|
|
|
|
virtio_scsi_complete_req(n->tmf_req);
|
|
|
|
}
|
2015-10-01 18:59:01 +08:00
|
|
|
g_free(n);
|
2014-09-30 11:40:23 +08:00
|
|
|
}
|
|
|
|
|
2016-09-14 18:17:04 +08:00
|
|
|
static inline void virtio_scsi_ctx_check(VirtIOSCSI *s, SCSIDevice *d)
|
|
|
|
{
|
|
|
|
if (s->dataplane_started && d && blk_is_available(d->conf.blk)) {
|
|
|
|
assert(blk_get_aio_context(d->conf.blk) == s->ctx);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-09-30 11:40:23 +08:00
|
|
|
/* Return 0 if the request is ready to be completed and return to guest;
|
|
|
|
* -EINPROGRESS if the request is submitted and will be completed later, in the
|
|
|
|
* case of async cancellation. */
|
|
|
|
static int virtio_scsi_do_tmf(VirtIOSCSI *s, VirtIOSCSIReq *req)
|
2011-02-13 18:55:52 +08:00
|
|
|
{
|
2014-06-10 22:40:31 +08:00
|
|
|
SCSIDevice *d = virtio_scsi_device_find(s, req->req.tmf.lun);
|
2011-11-15 00:44:09 +08:00
|
|
|
SCSIRequest *r, *next;
|
2011-12-24 05:34:39 +08:00
|
|
|
BusChild *kid;
|
2011-11-15 00:44:09 +08:00
|
|
|
int target;
|
2014-09-30 11:40:23 +08:00
|
|
|
int ret = 0;
|
2011-11-15 00:44:09 +08:00
|
|
|
|
2016-09-14 18:17:04 +08:00
|
|
|
virtio_scsi_ctx_check(s, d);
|
2011-11-15 00:44:09 +08:00
|
|
|
/* Here VIRTIO_SCSI_S_OK means "FUNCTION COMPLETE". */
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.tmf.response = VIRTIO_SCSI_S_OK;
|
2011-11-15 00:44:09 +08:00
|
|
|
|
2014-06-25 01:48:53 +08:00
|
|
|
virtio_tswap32s(VIRTIO_DEVICE(s), &req->req.tmf.subtype);
|
2014-06-10 22:40:31 +08:00
|
|
|
switch (req->req.tmf.subtype) {
|
2011-11-15 00:44:09 +08:00
|
|
|
case VIRTIO_SCSI_T_TMF_ABORT_TASK:
|
|
|
|
case VIRTIO_SCSI_T_TMF_QUERY_TASK:
|
|
|
|
if (!d) {
|
|
|
|
goto fail;
|
|
|
|
}
|
2014-06-10 22:40:31 +08:00
|
|
|
if (d->lun != virtio_scsi_get_lun(req->req.tmf.lun)) {
|
2011-11-15 00:44:09 +08:00
|
|
|
goto incorrect_lun;
|
|
|
|
}
|
|
|
|
QTAILQ_FOREACH_SAFE(r, &d->requests, next, next) {
|
2012-08-08 22:26:16 +08:00
|
|
|
VirtIOSCSIReq *cmd_req = r->hba_private;
|
2014-06-10 22:40:31 +08:00
|
|
|
if (cmd_req && cmd_req->req.cmd.tag == req->req.tmf.tag) {
|
2011-11-15 00:44:09 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2012-08-08 22:26:16 +08:00
|
|
|
if (r) {
|
|
|
|
/*
|
|
|
|
* Assert that the request has not been completed yet, we
|
|
|
|
* check for it in the loop above.
|
|
|
|
*/
|
|
|
|
assert(r->hba_private);
|
2014-06-10 22:40:31 +08:00
|
|
|
if (req->req.tmf.subtype == VIRTIO_SCSI_T_TMF_QUERY_TASK) {
|
2011-11-15 00:44:09 +08:00
|
|
|
/* "If the specified command is present in the task set, then
|
|
|
|
* return a service response set to FUNCTION SUCCEEDED".
|
|
|
|
*/
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.tmf.response = VIRTIO_SCSI_S_FUNCTION_SUCCEEDED;
|
2011-11-15 00:44:09 +08:00
|
|
|
} else {
|
2014-09-30 11:40:23 +08:00
|
|
|
VirtIOSCSICancelNotifier *notifier;
|
|
|
|
|
|
|
|
req->remaining = 1;
|
2015-10-01 18:59:01 +08:00
|
|
|
notifier = g_new(VirtIOSCSICancelNotifier, 1);
|
2014-09-30 11:40:23 +08:00
|
|
|
notifier->tmf_req = req;
|
|
|
|
notifier->notifier.notify = virtio_scsi_cancel_notify;
|
|
|
|
scsi_req_cancel_async(r, ¬ifier->notifier);
|
|
|
|
ret = -EINPROGRESS;
|
2011-11-15 00:44:09 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case VIRTIO_SCSI_T_TMF_LOGICAL_UNIT_RESET:
|
|
|
|
if (!d) {
|
|
|
|
goto fail;
|
|
|
|
}
|
2014-06-10 22:40:31 +08:00
|
|
|
if (d->lun != virtio_scsi_get_lun(req->req.tmf.lun)) {
|
2011-11-15 00:44:09 +08:00
|
|
|
goto incorrect_lun;
|
|
|
|
}
|
|
|
|
s->resetting++;
|
|
|
|
qdev_reset_all(&d->qdev);
|
|
|
|
s->resetting--;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case VIRTIO_SCSI_T_TMF_ABORT_TASK_SET:
|
|
|
|
case VIRTIO_SCSI_T_TMF_CLEAR_TASK_SET:
|
|
|
|
case VIRTIO_SCSI_T_TMF_QUERY_TASK_SET:
|
|
|
|
if (!d) {
|
|
|
|
goto fail;
|
|
|
|
}
|
2014-06-10 22:40:31 +08:00
|
|
|
if (d->lun != virtio_scsi_get_lun(req->req.tmf.lun)) {
|
2011-11-15 00:44:09 +08:00
|
|
|
goto incorrect_lun;
|
|
|
|
}
|
2014-09-30 11:40:23 +08:00
|
|
|
|
|
|
|
/* Add 1 to "remaining" until virtio_scsi_do_tmf returns.
|
|
|
|
* This way, if the bus starts calling back to the notifiers
|
|
|
|
* even before we finish the loop, virtio_scsi_cancel_notify
|
|
|
|
* will not complete the TMF too early.
|
|
|
|
*/
|
|
|
|
req->remaining = 1;
|
2011-11-15 00:44:09 +08:00
|
|
|
QTAILQ_FOREACH_SAFE(r, &d->requests, next, next) {
|
|
|
|
if (r->hba_private) {
|
2014-06-10 22:40:31 +08:00
|
|
|
if (req->req.tmf.subtype == VIRTIO_SCSI_T_TMF_QUERY_TASK_SET) {
|
2011-11-15 00:44:09 +08:00
|
|
|
/* "If there is any command present in the task set, then
|
|
|
|
* return a service response set to FUNCTION SUCCEEDED".
|
|
|
|
*/
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.tmf.response = VIRTIO_SCSI_S_FUNCTION_SUCCEEDED;
|
2011-11-15 00:44:09 +08:00
|
|
|
break;
|
|
|
|
} else {
|
2014-09-30 11:40:23 +08:00
|
|
|
VirtIOSCSICancelNotifier *notifier;
|
|
|
|
|
|
|
|
req->remaining++;
|
2015-10-01 18:59:01 +08:00
|
|
|
notifier = g_new(VirtIOSCSICancelNotifier, 1);
|
2014-09-30 11:40:23 +08:00
|
|
|
notifier->notifier.notify = virtio_scsi_cancel_notify;
|
|
|
|
notifier->tmf_req = req;
|
|
|
|
scsi_req_cancel_async(r, ¬ifier->notifier);
|
2011-11-15 00:44:09 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2014-09-30 11:40:23 +08:00
|
|
|
if (--req->remaining > 0) {
|
|
|
|
ret = -EINPROGRESS;
|
|
|
|
}
|
2011-11-15 00:44:09 +08:00
|
|
|
break;
|
|
|
|
|
|
|
|
case VIRTIO_SCSI_T_TMF_I_T_NEXUS_RESET:
|
2014-06-10 22:40:31 +08:00
|
|
|
target = req->req.tmf.lun[1];
|
2011-11-15 00:44:09 +08:00
|
|
|
s->resetting++;
|
2011-12-24 05:34:39 +08:00
|
|
|
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
|
2016-01-06 17:37:46 +08:00
|
|
|
d = SCSI_DEVICE(kid->child);
|
2011-11-15 00:44:09 +08:00
|
|
|
if (d->channel == 0 && d->id == target) {
|
|
|
|
qdev_reset_all(&d->qdev);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
s->resetting--;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case VIRTIO_SCSI_T_TMF_CLEAR_ACA:
|
|
|
|
default:
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.tmf.response = VIRTIO_SCSI_S_FUNCTION_REJECTED;
|
2011-11-15 00:44:09 +08:00
|
|
|
break;
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
|
|
|
|
2014-09-30 11:40:23 +08:00
|
|
|
return ret;
|
2011-11-15 00:44:09 +08:00
|
|
|
|
|
|
|
incorrect_lun:
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.tmf.response = VIRTIO_SCSI_S_INCORRECT_LUN;
|
2014-09-30 11:40:23 +08:00
|
|
|
return ret;
|
2011-11-15 00:44:09 +08:00
|
|
|
|
|
|
|
fail:
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.tmf.response = VIRTIO_SCSI_S_BAD_TARGET;
|
2014-09-30 11:40:23 +08:00
|
|
|
return ret;
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
|
|
|
|
2016-04-06 18:16:27 +08:00
|
|
|
static void virtio_scsi_handle_ctrl_req(VirtIOSCSI *s, VirtIOSCSIReq *req)
|
2011-02-11 16:40:59 +08:00
|
|
|
{
|
2014-08-06 13:35:01 +08:00
|
|
|
VirtIODevice *vdev = (VirtIODevice *)s;
|
2014-10-25 10:43:44 +08:00
|
|
|
uint32_t type;
|
2014-09-30 11:40:23 +08:00
|
|
|
int r = 0;
|
2011-02-13 18:55:52 +08:00
|
|
|
|
2014-08-06 13:35:01 +08:00
|
|
|
if (iov_to_buf(req->elem.out_sg, req->elem.out_num, 0,
|
|
|
|
&type, sizeof(type)) < sizeof(type)) {
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
virtio_scsi_bad_req(req);
|
2014-08-06 13:35:01 +08:00
|
|
|
return;
|
|
|
|
}
|
2014-06-10 22:21:18 +08:00
|
|
|
|
2014-10-25 10:43:44 +08:00
|
|
|
virtio_tswap32s(vdev, &type);
|
|
|
|
if (type == VIRTIO_SCSI_T_TMF) {
|
2014-08-06 13:35:01 +08:00
|
|
|
if (virtio_scsi_parse_req(req, sizeof(VirtIOSCSICtrlTMFReq),
|
|
|
|
sizeof(VirtIOSCSICtrlTMFResp)) < 0) {
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
virtio_scsi_bad_req(req);
|
|
|
|
return;
|
2014-08-06 13:35:01 +08:00
|
|
|
} else {
|
2014-09-30 11:40:23 +08:00
|
|
|
r = virtio_scsi_do_tmf(s, req);
|
2014-06-10 22:53:39 +08:00
|
|
|
}
|
2011-11-15 00:44:09 +08:00
|
|
|
|
2014-10-25 10:43:44 +08:00
|
|
|
} else if (type == VIRTIO_SCSI_T_AN_QUERY ||
|
|
|
|
type == VIRTIO_SCSI_T_AN_SUBSCRIBE) {
|
2014-08-06 13:35:01 +08:00
|
|
|
if (virtio_scsi_parse_req(req, sizeof(VirtIOSCSICtrlANReq),
|
|
|
|
sizeof(VirtIOSCSICtrlANResp)) < 0) {
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
virtio_scsi_bad_req(req);
|
|
|
|
return;
|
2014-08-06 13:35:01 +08:00
|
|
|
} else {
|
|
|
|
req->resp.an.event_actual = 0;
|
|
|
|
req->resp.an.response = VIRTIO_SCSI_S_OK;
|
2011-11-15 00:44:09 +08:00
|
|
|
}
|
2014-08-06 13:35:01 +08:00
|
|
|
}
|
2014-09-30 11:40:23 +08:00
|
|
|
if (r == 0) {
|
|
|
|
virtio_scsi_complete_req(req);
|
|
|
|
} else {
|
|
|
|
assert(r == -EINPROGRESS);
|
|
|
|
}
|
2014-08-06 13:35:01 +08:00
|
|
|
}
|
|
|
|
|
2016-04-06 18:16:27 +08:00
|
|
|
void virtio_scsi_handle_ctrl_vq(VirtIOSCSI *s, VirtQueue *vq)
|
2014-08-06 13:35:01 +08:00
|
|
|
{
|
|
|
|
VirtIOSCSIReq *req;
|
|
|
|
|
|
|
|
while ((req = virtio_scsi_pop_req(s, vq))) {
|
|
|
|
virtio_scsi_handle_ctrl_req(s, req);
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-04-06 18:16:27 +08:00
|
|
|
static void virtio_scsi_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
|
|
|
|
{
|
|
|
|
VirtIOSCSI *s = (VirtIOSCSI *)vdev;
|
|
|
|
|
|
|
|
if (s->ctx) {
|
2016-10-22 04:48:10 +08:00
|
|
|
virtio_device_start_ioeventfd(vdev);
|
2016-04-06 18:16:27 +08:00
|
|
|
if (!s->dataplane_fenced) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
virtio_scsi_handle_ctrl_vq(s, vq);
|
|
|
|
}
|
|
|
|
|
2014-06-11 02:16:20 +08:00
|
|
|
static void virtio_scsi_complete_cmd_req(VirtIOSCSIReq *req)
|
|
|
|
{
|
2014-06-10 22:40:31 +08:00
|
|
|
/* Sense data is not in req->resp and is copied separately
|
|
|
|
* in virtio_scsi_command_complete.
|
|
|
|
*/
|
|
|
|
req->resp_size = sizeof(VirtIOSCSICmdResp);
|
2014-06-11 02:16:20 +08:00
|
|
|
virtio_scsi_complete_req(req);
|
|
|
|
}
|
|
|
|
|
2011-11-14 23:58:41 +08:00
|
|
|
static void virtio_scsi_command_complete(SCSIRequest *r, uint32_t status,
|
|
|
|
size_t resid)
|
|
|
|
{
|
|
|
|
VirtIOSCSIReq *req = r->hba_private;
|
2014-06-10 22:58:19 +08:00
|
|
|
uint8_t sense[SCSI_SENSE_BUF_SIZE];
|
2012-11-23 13:08:44 +08:00
|
|
|
uint32_t sense_len;
|
2014-06-25 01:48:53 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(req->dev);
|
2011-11-14 23:58:41 +08:00
|
|
|
|
2014-01-15 03:16:25 +08:00
|
|
|
if (r->io_canceled) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.cmd.response = VIRTIO_SCSI_S_OK;
|
|
|
|
req->resp.cmd.status = status;
|
|
|
|
if (req->resp.cmd.status == GOOD) {
|
2014-06-25 01:48:53 +08:00
|
|
|
req->resp.cmd.resid = virtio_tswap32(vdev, resid);
|
2011-11-14 23:58:41 +08:00
|
|
|
} else {
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.cmd.resid = 0;
|
2014-06-10 22:58:19 +08:00
|
|
|
sense_len = scsi_req_get_sense(r, sense, sizeof(sense));
|
2014-06-10 22:40:31 +08:00
|
|
|
sense_len = MIN(sense_len, req->resp_iov.size - sizeof(req->resp.cmd));
|
|
|
|
qemu_iovec_from_buf(&req->resp_iov, sizeof(req->resp.cmd),
|
2014-10-27 16:51:41 +08:00
|
|
|
sense, sense_len);
|
2014-06-25 01:48:53 +08:00
|
|
|
req->resp.cmd.sense_len = virtio_tswap32(vdev, sense_len);
|
2011-11-14 23:58:41 +08:00
|
|
|
}
|
2014-06-11 02:16:20 +08:00
|
|
|
virtio_scsi_complete_cmd_req(req);
|
2011-11-14 23:58:41 +08:00
|
|
|
}
|
|
|
|
|
2014-07-16 17:04:37 +08:00
|
|
|
static int virtio_scsi_parse_cdb(SCSIDevice *dev, SCSICommand *cmd,
|
|
|
|
uint8_t *buf, void *hba_private)
|
|
|
|
{
|
|
|
|
VirtIOSCSIReq *req = hba_private;
|
|
|
|
|
|
|
|
if (cmd->len == 0) {
|
2015-03-11 21:31:29 +08:00
|
|
|
cmd->len = MIN(VIRTIO_SCSI_CDB_DEFAULT_SIZE, SCSI_CMD_BUF_SIZE);
|
2014-07-16 17:04:37 +08:00
|
|
|
memcpy(cmd->buf, buf, cmd->len);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Extract the direction and mode directly from the request, for
|
|
|
|
* host device passthrough.
|
|
|
|
*/
|
|
|
|
cmd->xfer = req->qsgl.size;
|
2014-09-18 00:10:37 +08:00
|
|
|
cmd->mode = req->mode;
|
2014-07-16 17:04:37 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-11-14 23:58:41 +08:00
|
|
|
static QEMUSGList *virtio_scsi_get_sg_list(SCSIRequest *r)
|
|
|
|
{
|
|
|
|
VirtIOSCSIReq *req = r->hba_private;
|
|
|
|
|
|
|
|
return &req->qsgl;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_scsi_request_cancelled(SCSIRequest *r)
|
|
|
|
{
|
|
|
|
VirtIOSCSIReq *req = r->hba_private;
|
|
|
|
|
|
|
|
if (!req) {
|
|
|
|
return;
|
|
|
|
}
|
2011-11-15 00:44:09 +08:00
|
|
|
if (req->dev->resetting) {
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.cmd.response = VIRTIO_SCSI_S_RESET;
|
2011-11-15 00:44:09 +08:00
|
|
|
} else {
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.cmd.response = VIRTIO_SCSI_S_ABORTED;
|
2011-11-15 00:44:09 +08:00
|
|
|
}
|
2014-06-11 02:16:20 +08:00
|
|
|
virtio_scsi_complete_cmd_req(req);
|
2011-11-14 23:58:41 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_scsi_fail_cmd_req(VirtIOSCSIReq *req)
|
2011-02-13 18:55:52 +08:00
|
|
|
{
|
2014-06-10 22:40:31 +08:00
|
|
|
req->resp.cmd.response = VIRTIO_SCSI_S_FAILURE;
|
2014-06-11 02:16:20 +08:00
|
|
|
virtio_scsi_complete_cmd_req(req);
|
2011-02-11 16:40:59 +08:00
|
|
|
}
|
|
|
|
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
static int virtio_scsi_handle_cmd_req_prepare(VirtIOSCSI *s, VirtIOSCSIReq *req)
|
2014-08-06 13:35:00 +08:00
|
|
|
{
|
|
|
|
VirtIOSCSICommon *vs = &s->parent_obj;
|
|
|
|
SCSIDevice *d;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = virtio_scsi_parse_req(req, sizeof(VirtIOSCSICmdReq) + vs->cdb_size,
|
|
|
|
sizeof(VirtIOSCSICmdResp) + vs->sense_size);
|
|
|
|
if (rc < 0) {
|
|
|
|
if (rc == -ENOTSUP) {
|
|
|
|
virtio_scsi_fail_cmd_req(req);
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
return -ENOTSUP;
|
2014-08-06 13:35:00 +08:00
|
|
|
} else {
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
virtio_scsi_bad_req(req);
|
|
|
|
return -EINVAL;
|
2014-08-06 13:35:00 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
d = virtio_scsi_device_find(s, req->req.cmd.lun);
|
|
|
|
if (!d) {
|
|
|
|
req->resp.cmd.response = VIRTIO_SCSI_S_BAD_TARGET;
|
|
|
|
virtio_scsi_complete_cmd_req(req);
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
return -ENOENT;
|
2014-08-06 13:35:00 +08:00
|
|
|
}
|
2016-09-14 18:17:04 +08:00
|
|
|
virtio_scsi_ctx_check(s, d);
|
2014-08-06 13:35:00 +08:00
|
|
|
req->sreq = scsi_req_new(d, req->req.cmd.tag,
|
|
|
|
virtio_scsi_get_lun(req->req.cmd.lun),
|
2015-03-11 21:35:47 +08:00
|
|
|
req->req.cmd.cdb, req);
|
2014-08-06 13:35:00 +08:00
|
|
|
|
|
|
|
if (req->sreq->cmd.mode != SCSI_XFER_NONE
|
|
|
|
&& (req->sreq->cmd.mode != req->mode ||
|
|
|
|
req->sreq->cmd.xfer > req->qsgl.size)) {
|
|
|
|
req->resp.cmd.response = VIRTIO_SCSI_S_OVERRUN;
|
|
|
|
virtio_scsi_complete_cmd_req(req);
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
return -ENOBUFS;
|
2014-08-06 13:35:00 +08:00
|
|
|
}
|
2014-09-23 15:49:29 +08:00
|
|
|
scsi_req_ref(req->sreq);
|
2014-10-07 19:59:18 +08:00
|
|
|
blk_io_plug(d->conf.blk);
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
return 0;
|
2014-09-23 15:49:27 +08:00
|
|
|
}
|
2014-08-06 13:35:00 +08:00
|
|
|
|
2016-04-06 18:16:27 +08:00
|
|
|
static void virtio_scsi_handle_cmd_req_submit(VirtIOSCSI *s, VirtIOSCSIReq *req)
|
2014-09-23 15:49:27 +08:00
|
|
|
{
|
2014-10-08 07:19:00 +08:00
|
|
|
SCSIRequest *sreq = req->sreq;
|
|
|
|
if (scsi_req_enqueue(sreq)) {
|
|
|
|
scsi_req_continue(sreq);
|
2014-08-06 13:35:00 +08:00
|
|
|
}
|
2014-10-07 19:59:18 +08:00
|
|
|
blk_io_unplug(sreq->dev->conf.blk);
|
2014-10-08 07:19:00 +08:00
|
|
|
scsi_req_unref(sreq);
|
2014-08-06 13:35:00 +08:00
|
|
|
}
|
|
|
|
|
2016-04-06 18:16:27 +08:00
|
|
|
void virtio_scsi_handle_cmd_vq(VirtIOSCSI *s, VirtQueue *vq)
|
2011-02-11 16:40:59 +08:00
|
|
|
{
|
2014-09-23 15:49:28 +08:00
|
|
|
VirtIOSCSIReq *req, *next;
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
int ret;
|
|
|
|
|
2014-09-23 15:49:28 +08:00
|
|
|
QTAILQ_HEAD(, VirtIOSCSIReq) reqs = QTAILQ_HEAD_INITIALIZER(reqs);
|
2011-02-13 18:55:52 +08:00
|
|
|
|
|
|
|
while ((req = virtio_scsi_pop_req(s, vq))) {
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
ret = virtio_scsi_handle_cmd_req_prepare(s, req);
|
|
|
|
if (!ret) {
|
2014-09-23 15:49:28 +08:00
|
|
|
QTAILQ_INSERT_TAIL(&reqs, req, next);
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
} else if (ret == -EINVAL) {
|
|
|
|
/* The device is broken and shouldn't process any request */
|
|
|
|
while (!QTAILQ_EMPTY(&reqs)) {
|
|
|
|
req = QTAILQ_FIRST(&reqs);
|
|
|
|
QTAILQ_REMOVE(&reqs, req, next);
|
|
|
|
blk_io_unplug(req->sreq->dev->conf.blk);
|
|
|
|
scsi_req_unref(req->sreq);
|
|
|
|
virtqueue_detach_element(req->vq, &req->elem, 0);
|
|
|
|
virtio_scsi_free_req(req);
|
|
|
|
}
|
2014-09-23 15:49:27 +08:00
|
|
|
}
|
2011-02-13 18:55:52 +08:00
|
|
|
}
|
2014-09-23 15:49:28 +08:00
|
|
|
|
|
|
|
QTAILQ_FOREACH_SAFE(req, &reqs, next, next) {
|
|
|
|
virtio_scsi_handle_cmd_req_submit(s, req);
|
|
|
|
}
|
2011-02-11 16:40:59 +08:00
|
|
|
}
|
|
|
|
|
2016-04-06 18:16:27 +08:00
|
|
|
static void virtio_scsi_handle_cmd(VirtIODevice *vdev, VirtQueue *vq)
|
|
|
|
{
|
|
|
|
/* use non-QOM casts in the data path */
|
|
|
|
VirtIOSCSI *s = (VirtIOSCSI *)vdev;
|
|
|
|
|
|
|
|
if (s->ctx) {
|
2016-10-22 04:48:10 +08:00
|
|
|
virtio_device_start_ioeventfd(vdev);
|
2016-04-06 18:16:27 +08:00
|
|
|
if (!s->dataplane_fenced) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
virtio_scsi_handle_cmd_vq(s, vq);
|
|
|
|
}
|
|
|
|
|
2011-02-11 16:40:59 +08:00
|
|
|
static void virtio_scsi_get_config(VirtIODevice *vdev,
|
|
|
|
uint8_t *config)
|
|
|
|
{
|
|
|
|
VirtIOSCSIConfig *scsiconf = (VirtIOSCSIConfig *)config;
|
2013-03-29 09:08:15 +08:00
|
|
|
VirtIOSCSICommon *s = VIRTIO_SCSI_COMMON(vdev);
|
2011-02-11 16:40:59 +08:00
|
|
|
|
2014-06-25 01:48:53 +08:00
|
|
|
virtio_stl_p(vdev, &scsiconf->num_queues, s->conf.num_queues);
|
|
|
|
virtio_stl_p(vdev, &scsiconf->seg_max, 128 - 2);
|
|
|
|
virtio_stl_p(vdev, &scsiconf->max_sectors, s->conf.max_sectors);
|
|
|
|
virtio_stl_p(vdev, &scsiconf->cmd_per_lun, s->conf.cmd_per_lun);
|
|
|
|
virtio_stl_p(vdev, &scsiconf->event_info_size, sizeof(VirtIOSCSIEvent));
|
|
|
|
virtio_stl_p(vdev, &scsiconf->sense_size, s->sense_size);
|
|
|
|
virtio_stl_p(vdev, &scsiconf->cdb_size, s->cdb_size);
|
|
|
|
virtio_stw_p(vdev, &scsiconf->max_channel, VIRTIO_SCSI_MAX_CHANNEL);
|
|
|
|
virtio_stw_p(vdev, &scsiconf->max_target, VIRTIO_SCSI_MAX_TARGET);
|
|
|
|
virtio_stl_p(vdev, &scsiconf->max_lun, VIRTIO_SCSI_MAX_LUN);
|
2011-02-11 16:40:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_scsi_set_config(VirtIODevice *vdev,
|
|
|
|
const uint8_t *config)
|
|
|
|
{
|
|
|
|
VirtIOSCSIConfig *scsiconf = (VirtIOSCSIConfig *)config;
|
2013-03-29 09:08:15 +08:00
|
|
|
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
|
2011-02-11 16:40:59 +08:00
|
|
|
|
2014-06-25 01:48:53 +08:00
|
|
|
if ((uint32_t) virtio_ldl_p(vdev, &scsiconf->sense_size) >= 65536 ||
|
|
|
|
(uint32_t) virtio_ldl_p(vdev, &scsiconf->cdb_size) >= 256) {
|
2016-09-30 23:13:48 +08:00
|
|
|
virtio_error(vdev,
|
|
|
|
"bad data written to virtio-scsi configuration space");
|
|
|
|
return;
|
2011-02-11 16:40:59 +08:00
|
|
|
}
|
|
|
|
|
2014-06-25 01:48:53 +08:00
|
|
|
vs->sense_size = virtio_ldl_p(vdev, &scsiconf->sense_size);
|
|
|
|
vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size);
|
2011-02-11 16:40:59 +08:00
|
|
|
}
|
|
|
|
|
2015-06-01 16:45:40 +08:00
|
|
|
static uint64_t virtio_scsi_get_features(VirtIODevice *vdev,
|
2015-07-27 17:49:19 +08:00
|
|
|
uint64_t requested_features,
|
|
|
|
Error **errp)
|
2011-02-11 16:40:59 +08:00
|
|
|
{
|
2015-04-28 19:51:13 +08:00
|
|
|
VirtIOSCSI *s = VIRTIO_SCSI(vdev);
|
|
|
|
|
|
|
|
/* Firstly sync all virtio-scsi possible supported features */
|
|
|
|
requested_features |= s->host_features;
|
2011-02-11 16:40:59 +08:00
|
|
|
return requested_features;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_scsi_reset(VirtIODevice *vdev)
|
|
|
|
{
|
2013-03-29 09:08:15 +08:00
|
|
|
VirtIOSCSI *s = VIRTIO_SCSI(vdev);
|
|
|
|
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev);
|
2011-02-11 16:40:59 +08:00
|
|
|
|
2016-10-22 04:48:10 +08:00
|
|
|
assert(!s->dataplane_started);
|
2013-01-10 22:49:08 +08:00
|
|
|
s->resetting++;
|
|
|
|
qbus_reset_all(&s->bus.qbus);
|
|
|
|
s->resetting--;
|
|
|
|
|
2015-03-11 21:31:29 +08:00
|
|
|
vs->sense_size = VIRTIO_SCSI_SENSE_DEFAULT_SIZE;
|
|
|
|
vs->cdb_size = VIRTIO_SCSI_CDB_DEFAULT_SIZE;
|
2012-07-16 20:50:27 +08:00
|
|
|
s->events_dropped = false;
|
2011-02-11 16:40:59 +08:00
|
|
|
}
|
|
|
|
|
2014-08-06 13:35:05 +08:00
|
|
|
void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
|
|
|
|
uint32_t event, uint32_t reason)
|
2012-06-20 14:47:11 +08:00
|
|
|
{
|
2013-03-29 09:08:15 +08:00
|
|
|
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
|
2014-05-16 23:44:06 +08:00
|
|
|
VirtIOSCSIReq *req;
|
2012-06-20 14:47:11 +08:00
|
|
|
VirtIOSCSIEvent *evt;
|
2013-03-21 22:15:18 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(s);
|
2012-06-20 14:47:11 +08:00
|
|
|
|
2013-03-21 22:15:18 +08:00
|
|
|
if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) {
|
2012-10-08 22:50:51 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2014-09-23 15:49:25 +08:00
|
|
|
if (s->dataplane_started) {
|
|
|
|
assert(s->ctx);
|
|
|
|
aio_context_acquire(s->ctx);
|
|
|
|
}
|
|
|
|
|
2016-02-15 01:17:10 +08:00
|
|
|
req = virtio_scsi_pop_req(s, vs->event_vq);
|
2012-07-02 16:47:35 +08:00
|
|
|
if (!req) {
|
|
|
|
s->events_dropped = true;
|
2014-09-23 15:49:25 +08:00
|
|
|
goto out;
|
2012-07-02 16:47:35 +08:00
|
|
|
}
|
2012-06-20 14:47:11 +08:00
|
|
|
|
2012-07-02 16:47:35 +08:00
|
|
|
if (s->events_dropped) {
|
|
|
|
event |= VIRTIO_SCSI_T_EVENTS_MISSED;
|
|
|
|
s->events_dropped = false;
|
|
|
|
}
|
|
|
|
|
2014-06-30 23:33:18 +08:00
|
|
|
if (virtio_scsi_parse_req(req, 0, sizeof(VirtIOSCSIEvent))) {
|
virtio-scsi: convert virtio_scsi_bad_req() to use virtio_error()
The virtio_scsi_bad_req() function is called when a guest sends a
request with missing or ill-sized headers. This generally happens
when the virtio_scsi_parse_req() function returns an error.
With this patch, virtio_scsi_bad_req() will mark the device as broken,
detach the request from the virtqueue and free it, instead of forcing
QEMU to exit.
In nearly all locations where virtio_scsi_bad_req() is called, the only
thing to do next is to return to the caller.
The virtio_scsi_handle_cmd_req_prepare() function is an exception though.
It is called in a loop by virtio_scsi_handle_cmd_vq() and passed requests
freshly popped from a cmd virtqueue; virtio_scsi_handle_cmd_req_prepare()
does some sanity checks on the request and returns a boolean flag to
indicate whether the request should be queued or not. In the latter case,
virtio_scsi_handle_cmd_req_prepare() has detected a non-fatal error and
sent a response back to the guest.
We have now a new condition to take into account: the device is broken
and should stop all processing.
The return value of virtio_scsi_handle_cmd_req_prepare() is hence changed
to an int. A return value of zero means that the request should be queued.
Other non-fatal error cases where the request shoudn't be queued return
a negative errno (values are vaguely inspired by the error condition, but
the only goal here is to discriminate the case we're interested in).
And finally, if virtio_scsi_bad_req() was called, -EINVAL is returned. In
this case, virtio_scsi_handle_cmd_vq() detaches and frees already queued
requests, instead of submitting them.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-09-30 23:13:40 +08:00
|
|
|
virtio_scsi_bad_req(req);
|
|
|
|
goto out;
|
2012-07-02 16:47:35 +08:00
|
|
|
}
|
|
|
|
|
2014-06-10 22:40:31 +08:00
|
|
|
evt = &req->resp.event;
|
2012-07-02 16:47:35 +08:00
|
|
|
memset(evt, 0, sizeof(VirtIOSCSIEvent));
|
2014-06-30 23:17:17 +08:00
|
|
|
evt->event = virtio_tswap32(vdev, event);
|
|
|
|
evt->reason = virtio_tswap32(vdev, reason);
|
2012-07-02 16:47:35 +08:00
|
|
|
if (!dev) {
|
2014-01-15 03:16:26 +08:00
|
|
|
assert(event == VIRTIO_SCSI_T_EVENTS_MISSED);
|
2012-07-02 16:47:35 +08:00
|
|
|
} else {
|
2012-06-20 14:47:11 +08:00
|
|
|
evt->lun[0] = 1;
|
|
|
|
evt->lun[1] = dev->id;
|
|
|
|
|
|
|
|
/* Linux wants us to keep the same encoding we use for REPORT LUNS. */
|
|
|
|
if (dev->lun >= 256) {
|
|
|
|
evt->lun[2] = (dev->lun >> 8) | 0x40;
|
|
|
|
}
|
|
|
|
evt->lun[3] = dev->lun & 0xFF;
|
2012-07-02 16:47:35 +08:00
|
|
|
}
|
|
|
|
virtio_scsi_complete_req(req);
|
2014-09-23 15:49:25 +08:00
|
|
|
out:
|
|
|
|
if (s->dataplane_started) {
|
|
|
|
aio_context_release(s->ctx);
|
|
|
|
}
|
2012-07-02 16:47:35 +08:00
|
|
|
}
|
|
|
|
|
2016-04-06 18:16:27 +08:00
|
|
|
void virtio_scsi_handle_event_vq(VirtIOSCSI *s, VirtQueue *vq)
|
|
|
|
{
|
|
|
|
if (s->events_dropped) {
|
|
|
|
virtio_scsi_push_event(s, NULL, VIRTIO_SCSI_T_NO_EVENT, 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-07-02 16:47:35 +08:00
|
|
|
static void virtio_scsi_handle_event(VirtIODevice *vdev, VirtQueue *vq)
|
|
|
|
{
|
2013-03-21 22:15:18 +08:00
|
|
|
VirtIOSCSI *s = VIRTIO_SCSI(vdev);
|
2012-07-02 16:47:35 +08:00
|
|
|
|
2016-04-06 18:16:27 +08:00
|
|
|
if (s->ctx) {
|
2016-10-22 04:48:10 +08:00
|
|
|
virtio_device_start_ioeventfd(vdev);
|
2016-04-06 18:16:27 +08:00
|
|
|
if (!s->dataplane_fenced) {
|
|
|
|
return;
|
|
|
|
}
|
2012-06-20 14:47:11 +08:00
|
|
|
}
|
2016-04-06 18:16:27 +08:00
|
|
|
virtio_scsi_handle_event_vq(s, vq);
|
2012-06-20 14:47:11 +08:00
|
|
|
}
|
|
|
|
|
2012-07-16 20:22:52 +08:00
|
|
|
static void virtio_scsi_change(SCSIBus *bus, SCSIDevice *dev, SCSISense sense)
|
|
|
|
{
|
|
|
|
VirtIOSCSI *s = container_of(bus, VirtIOSCSI, bus);
|
2013-03-21 22:15:18 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(s);
|
2012-07-16 20:22:52 +08:00
|
|
|
|
2015-08-17 17:48:29 +08:00
|
|
|
if (virtio_vdev_has_feature(vdev, VIRTIO_SCSI_F_CHANGE) &&
|
2012-07-16 20:22:52 +08:00
|
|
|
dev->type != TYPE_ROM) {
|
|
|
|
virtio_scsi_push_event(s, dev, VIRTIO_SCSI_T_PARAM_CHANGE,
|
|
|
|
sense.asc | (sense.ascq << 8));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-09-26 17:28:33 +08:00
|
|
|
static void virtio_scsi_hotplug(HotplugHandler *hotplug_dev, DeviceState *dev,
|
|
|
|
Error **errp)
|
2012-06-20 14:47:11 +08:00
|
|
|
{
|
2014-09-26 17:28:33 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(hotplug_dev);
|
2014-10-19 12:47:42 +08:00
|
|
|
VirtIOSCSI *s = VIRTIO_SCSI(vdev);
|
|
|
|
SCSIDevice *sd = SCSI_DEVICE(dev);
|
|
|
|
|
2016-04-06 18:16:24 +08:00
|
|
|
if (s->ctx && !s->dataplane_fenced) {
|
2014-10-19 12:47:42 +08:00
|
|
|
if (blk_op_is_blocked(sd->conf.blk, BLOCK_OP_TYPE_DATAPLANE, errp)) {
|
|
|
|
return;
|
|
|
|
}
|
2015-02-15 11:06:31 +08:00
|
|
|
aio_context_acquire(s->ctx);
|
|
|
|
blk_set_aio_context(sd->conf.blk, s->ctx);
|
|
|
|
aio_context_release(s->ctx);
|
2016-01-29 23:36:05 +08:00
|
|
|
|
2014-10-19 12:47:42 +08:00
|
|
|
}
|
2012-06-20 14:47:11 +08:00
|
|
|
|
2015-08-17 17:48:29 +08:00
|
|
|
if (virtio_vdev_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) {
|
2014-10-19 12:47:42 +08:00
|
|
|
virtio_scsi_push_event(s, sd,
|
2014-09-26 17:28:33 +08:00
|
|
|
VIRTIO_SCSI_T_TRANSPORT_RESET,
|
2012-06-20 14:47:11 +08:00
|
|
|
VIRTIO_SCSI_EVT_RESET_RESCAN);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-09-26 17:28:33 +08:00
|
|
|
static void virtio_scsi_hotunplug(HotplugHandler *hotplug_dev, DeviceState *dev,
|
|
|
|
Error **errp)
|
2012-06-20 14:47:11 +08:00
|
|
|
{
|
2014-09-26 17:28:33 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(hotplug_dev);
|
2014-10-19 12:47:42 +08:00
|
|
|
VirtIOSCSI *s = VIRTIO_SCSI(vdev);
|
|
|
|
SCSIDevice *sd = SCSI_DEVICE(dev);
|
2012-06-20 14:47:11 +08:00
|
|
|
|
2015-08-17 17:48:29 +08:00
|
|
|
if (virtio_vdev_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) {
|
2014-10-19 12:47:42 +08:00
|
|
|
virtio_scsi_push_event(s, sd,
|
2014-09-26 17:28:33 +08:00
|
|
|
VIRTIO_SCSI_T_TRANSPORT_RESET,
|
2012-06-20 14:47:11 +08:00
|
|
|
VIRTIO_SCSI_EVT_RESET_REMOVED);
|
|
|
|
}
|
2014-10-19 12:47:42 +08:00
|
|
|
|
2014-09-26 17:28:33 +08:00
|
|
|
qdev_simple_device_unplug_cb(hotplug_dev, dev, errp);
|
2012-06-20 14:47:11 +08:00
|
|
|
}
|
|
|
|
|
2011-11-14 23:58:41 +08:00
|
|
|
static struct SCSIBusInfo virtio_scsi_scsi_info = {
|
|
|
|
.tcq = true,
|
|
|
|
.max_channel = VIRTIO_SCSI_MAX_CHANNEL,
|
|
|
|
.max_target = VIRTIO_SCSI_MAX_TARGET,
|
|
|
|
.max_lun = VIRTIO_SCSI_MAX_LUN,
|
|
|
|
|
|
|
|
.complete = virtio_scsi_command_complete,
|
|
|
|
.cancel = virtio_scsi_request_cancelled,
|
2012-07-16 20:22:52 +08:00
|
|
|
.change = virtio_scsi_change,
|
2014-07-16 17:04:37 +08:00
|
|
|
.parse_cdb = virtio_scsi_parse_cdb,
|
2011-11-14 23:58:41 +08:00
|
|
|
.get_sg_list = virtio_scsi_get_sg_list,
|
2011-12-02 22:23:15 +08:00
|
|
|
.save_request = virtio_scsi_save_request,
|
|
|
|
.load_request = virtio_scsi_load_request,
|
2011-11-14 23:58:41 +08:00
|
|
|
};
|
|
|
|
|
2014-06-19 16:12:00 +08:00
|
|
|
void virtio_scsi_common_realize(DeviceState *dev, Error **errp,
|
2016-07-13 13:09:48 +08:00
|
|
|
VirtIOHandleOutput ctrl,
|
|
|
|
VirtIOHandleOutput evt,
|
|
|
|
VirtIOHandleOutput cmd)
|
2011-02-11 16:40:59 +08:00
|
|
|
{
|
2013-07-30 09:19:55 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
|
|
|
|
VirtIOSCSICommon *s = VIRTIO_SCSI_COMMON(dev);
|
2012-04-06 16:39:46 +08:00
|
|
|
int i;
|
2011-02-11 16:40:59 +08:00
|
|
|
|
2013-07-30 11:41:42 +08:00
|
|
|
virtio_init(vdev, "virtio-scsi", VIRTIO_ID_SCSI,
|
2013-03-21 22:15:19 +08:00
|
|
|
sizeof(VirtIOSCSIConfig));
|
2013-03-21 22:15:14 +08:00
|
|
|
|
2014-10-31 11:04:31 +08:00
|
|
|
if (s->conf.num_queues == 0 ||
|
2015-05-29 14:15:31 +08:00
|
|
|
s->conf.num_queues > VIRTIO_QUEUE_MAX - 2) {
|
2014-10-31 11:04:31 +08:00
|
|
|
error_setg(errp, "Invalid number of queues (= %" PRIu32 "), "
|
2014-08-26 14:30:30 +08:00
|
|
|
"must be a positive integer less than %d.",
|
2015-05-29 14:15:31 +08:00
|
|
|
s->conf.num_queues, VIRTIO_QUEUE_MAX - 2);
|
2014-10-30 19:50:26 +08:00
|
|
|
virtio_cleanup(vdev);
|
2014-08-26 14:30:30 +08:00
|
|
|
return;
|
|
|
|
}
|
2014-12-04 21:12:45 +08:00
|
|
|
s->cmd_vqs = g_new0(VirtQueue *, s->conf.num_queues);
|
2015-03-11 21:31:29 +08:00
|
|
|
s->sense_size = VIRTIO_SCSI_SENSE_DEFAULT_SIZE;
|
|
|
|
s->cdb_size = VIRTIO_SCSI_CDB_DEFAULT_SIZE;
|
2013-03-21 22:15:14 +08:00
|
|
|
|
2016-10-22 04:48:10 +08:00
|
|
|
s->ctrl_vq = virtio_add_queue(vdev, VIRTIO_SCSI_VQ_SIZE, ctrl);
|
|
|
|
s->event_vq = virtio_add_queue(vdev, VIRTIO_SCSI_VQ_SIZE, evt);
|
2013-03-21 22:15:11 +08:00
|
|
|
for (i = 0; i < s->conf.num_queues; i++) {
|
2016-10-22 04:48:10 +08:00
|
|
|
s->cmd_vqs[i] = virtio_add_queue(vdev, VIRTIO_SCSI_VQ_SIZE, cmd);
|
2014-09-23 15:49:30 +08:00
|
|
|
}
|
2013-03-29 09:08:15 +08:00
|
|
|
}
|
|
|
|
|
2013-07-30 09:19:55 +08:00
|
|
|
static void virtio_scsi_device_realize(DeviceState *dev, Error **errp)
|
2013-03-29 09:08:15 +08:00
|
|
|
{
|
2013-07-30 09:19:55 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
|
2013-07-30 11:41:42 +08:00
|
|
|
VirtIOSCSI *s = VIRTIO_SCSI(dev);
|
2013-07-21 18:16:34 +08:00
|
|
|
Error *err = NULL;
|
2013-03-29 09:08:15 +08:00
|
|
|
|
2014-06-19 16:12:00 +08:00
|
|
|
virtio_scsi_common_realize(dev, &err, virtio_scsi_handle_ctrl,
|
|
|
|
virtio_scsi_handle_event,
|
|
|
|
virtio_scsi_handle_cmd);
|
2013-07-30 09:19:55 +08:00
|
|
|
if (err != NULL) {
|
|
|
|
error_propagate(errp, err);
|
|
|
|
return;
|
2013-03-29 09:08:15 +08:00
|
|
|
}
|
|
|
|
|
2013-07-30 11:41:42 +08:00
|
|
|
scsi_bus_new(&s->bus, sizeof(s->bus), dev,
|
2013-08-24 02:30:03 +08:00
|
|
|
&virtio_scsi_scsi_info, vdev->bus_name);
|
2014-09-26 17:28:33 +08:00
|
|
|
/* override default SCSI bus hotplug-handler, with virtio-scsi's one */
|
|
|
|
qbus_set_hotplug_handler(BUS(&s->bus), dev, &error_abort);
|
2013-04-30 22:08:51 +08:00
|
|
|
|
2013-07-30 11:41:42 +08:00
|
|
|
if (!dev->hotplugged) {
|
2013-07-21 18:16:34 +08:00
|
|
|
scsi_bus_legacy_handle_cmdline(&s->bus, &err);
|
|
|
|
if (err != NULL) {
|
2013-07-30 09:19:55 +08:00
|
|
|
error_propagate(errp, err);
|
|
|
|
return;
|
2013-07-21 18:16:34 +08:00
|
|
|
}
|
2011-11-14 23:58:41 +08:00
|
|
|
}
|
2016-10-22 04:48:10 +08:00
|
|
|
|
|
|
|
virtio_scsi_dataplane_setup(s, errp);
|
2013-03-21 22:15:14 +08:00
|
|
|
}
|
|
|
|
|
2014-08-06 13:35:06 +08:00
|
|
|
static void virtio_scsi_instance_init(Object *obj)
|
|
|
|
{
|
|
|
|
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(obj);
|
|
|
|
|
|
|
|
object_property_add_link(obj, "iothread", TYPE_IOTHREAD,
|
|
|
|
(Object **)&vs->conf.iothread,
|
|
|
|
qdev_prop_allow_set_link_before_realize,
|
|
|
|
OBJ_PROP_LINK_UNREF_ON_RELEASE, &error_abort);
|
|
|
|
}
|
|
|
|
|
2013-07-30 09:50:44 +08:00
|
|
|
void virtio_scsi_common_unrealize(DeviceState *dev, Error **errp)
|
2013-03-29 09:08:15 +08:00
|
|
|
{
|
2013-07-30 09:50:44 +08:00
|
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
|
|
|
|
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(dev);
|
2013-03-29 09:08:15 +08:00
|
|
|
|
|
|
|
g_free(vs->cmd_vqs);
|
2013-04-24 16:21:22 +08:00
|
|
|
virtio_cleanup(vdev);
|
2013-03-29 09:08:15 +08:00
|
|
|
}
|
|
|
|
|
2013-07-30 09:50:44 +08:00
|
|
|
static void virtio_scsi_device_unrealize(DeviceState *dev, Error **errp)
|
2013-03-21 22:15:14 +08:00
|
|
|
{
|
2013-07-30 09:50:44 +08:00
|
|
|
virtio_scsi_common_unrealize(dev, errp);
|
2013-03-21 22:15:14 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static Property virtio_scsi_properties[] = {
|
2015-06-10 23:04:32 +08:00
|
|
|
DEFINE_PROP_UINT32("num_queues", VirtIOSCSI, parent_obj.conf.num_queues, 1),
|
|
|
|
DEFINE_PROP_UINT32("max_sectors", VirtIOSCSI, parent_obj.conf.max_sectors,
|
|
|
|
0xFFFF),
|
|
|
|
DEFINE_PROP_UINT32("cmd_per_lun", VirtIOSCSI, parent_obj.conf.cmd_per_lun,
|
|
|
|
128),
|
|
|
|
DEFINE_PROP_BIT("hotplug", VirtIOSCSI, host_features,
|
|
|
|
VIRTIO_SCSI_F_HOTPLUG, true),
|
|
|
|
DEFINE_PROP_BIT("param_change", VirtIOSCSI, host_features,
|
|
|
|
VIRTIO_SCSI_F_CHANGE, true),
|
2013-03-21 22:15:14 +08:00
|
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
|
|
};
|
|
|
|
|
2016-10-06 20:55:46 +08:00
|
|
|
static const VMStateDescription vmstate_virtio_scsi = {
|
|
|
|
.name = "virtio-scsi",
|
|
|
|
.minimum_version_id = 1,
|
|
|
|
.version_id = 1,
|
|
|
|
.fields = (VMStateField[]) {
|
|
|
|
VMSTATE_VIRTIO_DEVICE,
|
|
|
|
VMSTATE_END_OF_LIST()
|
|
|
|
},
|
|
|
|
};
|
2016-07-15 01:22:46 +08:00
|
|
|
|
2013-03-29 09:08:15 +08:00
|
|
|
static void virtio_scsi_common_class_init(ObjectClass *klass, void *data)
|
|
|
|
{
|
|
|
|
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
|
2013-07-29 22:17:45 +08:00
|
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
2013-03-29 09:08:15 +08:00
|
|
|
|
|
|
|
vdc->get_config = virtio_scsi_get_config;
|
2013-07-29 22:17:45 +08:00
|
|
|
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
|
2013-03-29 09:08:15 +08:00
|
|
|
}
|
|
|
|
|
2013-03-21 22:15:14 +08:00
|
|
|
static void virtio_scsi_class_init(ObjectClass *klass, void *data)
|
|
|
|
{
|
|
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
|
2014-09-26 17:28:33 +08:00
|
|
|
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
|
2013-07-30 09:19:55 +08:00
|
|
|
|
2013-03-21 22:15:14 +08:00
|
|
|
dc->props = virtio_scsi_properties;
|
2016-07-15 01:22:46 +08:00
|
|
|
dc->vmsd = &vmstate_virtio_scsi;
|
2013-07-29 22:17:45 +08:00
|
|
|
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
|
2013-07-30 09:19:55 +08:00
|
|
|
vdc->realize = virtio_scsi_device_realize;
|
2013-07-30 09:50:44 +08:00
|
|
|
vdc->unrealize = virtio_scsi_device_unrealize;
|
2013-03-21 22:15:14 +08:00
|
|
|
vdc->set_config = virtio_scsi_set_config;
|
|
|
|
vdc->get_features = virtio_scsi_get_features;
|
|
|
|
vdc->reset = virtio_scsi_reset;
|
2016-10-22 04:48:10 +08:00
|
|
|
vdc->start_ioeventfd = virtio_scsi_dataplane_start;
|
|
|
|
vdc->stop_ioeventfd = virtio_scsi_dataplane_stop;
|
2014-09-26 17:28:33 +08:00
|
|
|
hc->plug = virtio_scsi_hotplug;
|
|
|
|
hc->unplug = virtio_scsi_hotunplug;
|
2013-03-21 22:15:14 +08:00
|
|
|
}
|
|
|
|
|
2013-03-29 09:08:15 +08:00
|
|
|
static const TypeInfo virtio_scsi_common_info = {
|
|
|
|
.name = TYPE_VIRTIO_SCSI_COMMON,
|
|
|
|
.parent = TYPE_VIRTIO_DEVICE,
|
|
|
|
.instance_size = sizeof(VirtIOSCSICommon),
|
2013-08-19 23:53:15 +08:00
|
|
|
.abstract = true,
|
2013-03-29 09:08:15 +08:00
|
|
|
.class_init = virtio_scsi_common_class_init,
|
|
|
|
};
|
|
|
|
|
2013-03-21 22:15:14 +08:00
|
|
|
static const TypeInfo virtio_scsi_info = {
|
|
|
|
.name = TYPE_VIRTIO_SCSI,
|
2013-03-29 09:08:15 +08:00
|
|
|
.parent = TYPE_VIRTIO_SCSI_COMMON,
|
2013-03-21 22:15:14 +08:00
|
|
|
.instance_size = sizeof(VirtIOSCSI),
|
2014-08-06 13:35:06 +08:00
|
|
|
.instance_init = virtio_scsi_instance_init,
|
2013-03-21 22:15:14 +08:00
|
|
|
.class_init = virtio_scsi_class_init,
|
2014-09-26 17:28:33 +08:00
|
|
|
.interfaces = (InterfaceInfo[]) {
|
|
|
|
{ TYPE_HOTPLUG_HANDLER },
|
|
|
|
{ }
|
|
|
|
}
|
2013-03-21 22:15:14 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
static void virtio_register_types(void)
|
|
|
|
{
|
2013-03-29 09:08:15 +08:00
|
|
|
type_register_static(&virtio_scsi_common_info);
|
2013-03-21 22:15:14 +08:00
|
|
|
type_register_static(&virtio_scsi_info);
|
|
|
|
}
|
|
|
|
|
|
|
|
type_init(virtio_register_types)
|