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path: root/drivers/scsi/virtio_scsi.c
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Diffstat (limited to 'drivers/scsi/virtio_scsi.c')
-rw-r--r--drivers/scsi/virtio_scsi.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 355afbc7fde1..8e40347da0a8 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -561,6 +561,15 @@ static int virtscsi_queuecommand_single(struct Scsi_Host *sh,
return virtscsi_queuecommand(vscsi, &vscsi->req_vqs[0], sc);
}
+static struct virtio_scsi_vq *virtscsi_pick_vq_mq(struct virtio_scsi *vscsi,
+ struct scsi_cmnd *sc)
+{
+ u32 tag = blk_mq_unique_tag(sc->request);
+ u16 hwq = blk_mq_unique_tag_to_hwq(tag);
+
+ return &vscsi->req_vqs[hwq];
+}
+
static struct virtio_scsi_vq *virtscsi_pick_vq(struct virtio_scsi *vscsi,
struct virtio_scsi_target_state *tgt)
{
@@ -604,7 +613,12 @@ static int virtscsi_queuecommand_multi(struct Scsi_Host *sh,
struct virtio_scsi *vscsi = shost_priv(sh);
struct virtio_scsi_target_state *tgt =
scsi_target(sc->device)->hostdata;
- struct virtio_scsi_vq *req_vq = virtscsi_pick_vq(vscsi, tgt);
+ struct virtio_scsi_vq *req_vq;
+
+ if (shost_use_blk_mq(sh))
+ req_vq = virtscsi_pick_vq_mq(vscsi, sc);
+ else
+ req_vq = virtscsi_pick_vq(vscsi, tgt);
return virtscsi_queuecommand(vscsi, req_vq, sc);
}
@@ -981,6 +995,7 @@ static int virtscsi_probe(struct virtio_device *vdev)
shost->max_id = num_targets;
shost->max_channel = 0;
shost->max_cmd_len = VIRTIO_SCSI_CDB_SIZE;
+ shost->nr_hw_queues = num_queues;
if (virtio_has_feature(vdev, VIRTIO_SCSI_F_T10_PI)) {
host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION |