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virtio-blk: Replace VirtIOBlockRequest with VirtIOBlockReq

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Field "inhdr" is added temporarily for a more mechanical change, and
will be dropped in the next commit.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Fam Zheng 2014-06-11 12:11:46 +08:00 committed by Kevin Wolf
parent 98e2d49241
commit 04af2d70c5
2 changed files with 19 additions and 19 deletions
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34
hw/block/dataplane/virtio-blk.c
View File

@ -24,13 +24,6 @@
#include "hw/virtio/virtio-bus.h"
#include "qom/object_interfaces.h"
typedef struct {
VirtIOBlockDataPlane *s;
QEMUIOVector *inhdr; /* iovecs for virtio_blk_inhdr */
VirtQueueElement *elem; /* saved data from the virtqueue */
QEMUIOVector qiov; /* original request iovecs */
} VirtIOBlockRequest;
struct VirtIOBlockDataPlane {
bool started;
bool starting;
@ -68,7 +61,7 @@ static void notify_guest(VirtIOBlockDataPlane *s)
static void complete_rdwr(void *opaque, int ret)
{
VirtIOBlockRequest *req = opaque;
VirtIOBlockReq *req = opaque;
struct virtio_blk_inhdr hdr;
int len;
@ -80,7 +73,8 @@ static void complete_rdwr(void *opaque, int ret)
len = 0;
}
trace_virtio_blk_data_plane_complete_request(req->s, req->elem->index, ret);
trace_virtio_blk_data_plane_complete_request(req->dev->dataplane,
req->elem->index, ret);
qemu_iovec_from_buf(req->inhdr, 0, &hdr, sizeof(hdr));
qemu_iovec_destroy(req->inhdr);
@ -90,9 +84,9 @@ static void complete_rdwr(void *opaque, int ret)
* written to, but for virtio-blk it seems to be the number of bytes
* transferred plus the status bytes.
*/
vring_push(&req->s->vring, req->elem, len + sizeof(hdr));
notify_guest(req->s);
g_slice_free(VirtIOBlockRequest, req);
vring_push(&req->dev->dataplane->vring, req->elem, len + sizeof(hdr));
notify_guest(req->dev->dataplane);
g_slice_free(VirtIOBlockReq, req);
}
static void complete_request_early(VirtIOBlockDataPlane *s, VirtQueueElement *elem,
@ -128,14 +122,15 @@ static void do_rdwr_cmd(VirtIOBlockDataPlane *s, bool read,
int64_t sector_num, VirtQueueElement *elem,
QEMUIOVector *inhdr)
{
VirtIOBlockRequest *req = g_slice_new0(VirtIOBlockRequest);
VirtIOBlock *dev = VIRTIO_BLK(s->vdev);
VirtIOBlockReq *req = g_slice_new0(VirtIOBlockReq);
QEMUIOVector *qiov;
int nb_sectors;
/* Fill in virtio block metadata needed for completion */
req->s = s;
req->elem = elem;
req->inhdr = inhdr;
req->dev = dev;
qemu_iovec_init_external(&req->qiov, iov, iov_cnt);
qiov = &req->qiov;
@ -153,7 +148,7 @@ static void do_rdwr_cmd(VirtIOBlockDataPlane *s, bool read,
static void complete_flush(void *opaque, int ret)
{
VirtIOBlockRequest *req = opaque;
VirtIOBlockReq *req = opaque;
unsigned char status;
if (ret == 0) {
@ -162,15 +157,16 @@ static void complete_flush(void *opaque, int ret)
status = VIRTIO_BLK_S_IOERR;
}
complete_request_early(req->s, req->elem, req->inhdr, status);
g_slice_free(VirtIOBlockRequest, req);
complete_request_early(req->dev->dataplane, req->elem, req->inhdr, status);
g_slice_free(VirtIOBlockReq, req);
}
static void do_flush_cmd(VirtIOBlockDataPlane *s, VirtQueueElement *elem,
QEMUIOVector *inhdr)
{
VirtIOBlockRequest *req = g_slice_new(VirtIOBlockRequest);
req->s = s;
VirtIOBlock *dev = VIRTIO_BLK(s->vdev);
VirtIOBlockReq *req = g_slice_new0(VirtIOBlockReq);
req->dev = dev;
req->elem = elem;
req->inhdr = inhdr;

4
include/hw/virtio/virtio-blk.h
View File

@ -142,6 +142,10 @@ typedef struct VirtIOBlockReq {
QEMUIOVector qiov;
struct VirtIOBlockReq *next;
BlockAcctCookie acct;
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
QEMUIOVector *inhdr; /* iovecs for virtio_blk_inhdr */
#endif
} VirtIOBlockReq;
#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \