From: Mike Christie <michael.christie@xxxxxxxxxx> [ Upstream commit 18f1becb6948cd411fd01968a0a54af63732e73c ] Move code to parse lun from req's lun_buf to helper, so tmf code can use it in the next patch. Signed-off-by: Mike Christie <michael.christie@xxxxxxxxxx> Reviewed-by: Paolo Bonzini <pbonzini@xxxxxxxxxx> Acked-by: Jason Wang <jasowang@xxxxxxxxxx> Link: https://lore.kernel.org/r/1604986403-4931-5-git-send-email-michael.christie@xxxxxxxxxx Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> Acked-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/vhost/scsi.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 98c484149ac7f..6b816b3a65ea7 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -895,6 +895,11 @@ vhost_scsi_get_req(struct vhost_virtqueue *vq, struct vhost_scsi_ctx *vc, return ret; } +static u16 vhost_buf_to_lun(u8 *lun_buf) +{ + return ((lun_buf[2] << 8) | lun_buf[3]) & 0x3FFF; +} + static void vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq) { @@ -1033,12 +1038,12 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq) tag = vhost64_to_cpu(vq, v_req_pi.tag); task_attr = v_req_pi.task_attr; cdb = &v_req_pi.cdb[0]; - lun = ((v_req_pi.lun[2] << 8) | v_req_pi.lun[3]) & 0x3FFF; + lun = vhost_buf_to_lun(v_req_pi.lun); } else { tag = vhost64_to_cpu(vq, v_req.tag); task_attr = v_req.task_attr; cdb = &v_req.cdb[0]; - lun = ((v_req.lun[2] << 8) | v_req.lun[3]) & 0x3FFF; + lun = vhost_buf_to_lun(v_req.lun); } /* * Check that the received CDB size does not exceeded our -- 2.27.0
