Page MenuHomeFreeBSD
Files F144955638

D21807.1777008226.diff
No OneTemporary
Actions

Size
2 KB
Referenced Files
None
Subscribers
None

D21807.1777008226.diff
View Options

Index: sys/dev/virtio/scsi/virtio_scsi.h
===================================================================
--- sys/dev/virtio/scsi/virtio_scsi.h
+++ sys/dev/virtio/scsi/virtio_scsi.h
@@ -37,6 +37,10 @@
#define VIRTIO_SCSI_F_HOTPLUG 0x0002 /* Host should enable hot plug/unplug
* of new LUNs and targets.
*/
+#define VIRTIO_SCSI_F_CHANGE 0x0004 /* Host will report changes to LUN
+ * parameters via a
+ * VIRTIO_SCSI_T_PARAM_CHANGE.
+ */
#define VIRTIO_SCSI_CDB_SIZE 32
#define VIRTIO_SCSI_SENSE_SIZE 96
@@ -140,6 +144,7 @@
#define VIRTIO_SCSI_T_NO_EVENT 0
#define VIRTIO_SCSI_T_TRANSPORT_RESET 1
#define VIRTIO_SCSI_T_ASYNC_NOTIFY 2
+#define VIRTIO_SCSI_T_PARAM_CHANGE 3
/* Reasons of transport reset event */
#define VIRTIO_SCSI_EVT_RESET_HARD 0
Index: sys/dev/virtio/scsi/virtio_scsi.c
===================================================================
--- sys/dev/virtio/scsi/virtio_scsi.c
+++ sys/dev/virtio/scsi/virtio_scsi.c
@@ -206,6 +206,7 @@
static struct virtio_feature_desc vtscsi_feature_desc[] = {
{ VIRTIO_SCSI_F_INOUT, "InOut" },
{ VIRTIO_SCSI_F_HOTPLUG, "Hotplug" },
+ { VIRTIO_SCSI_F_CHANGE, "Change" },
{ 0, NULL }
};
@@ -1758,6 +1759,30 @@
}
static void
+vtscsi_param_change_event(struct vtscsi_softc *sc,
+ struct virtio_scsi_event *event)
+{
+ target_id_t target_id;
+ lun_id_t lun_id;
+ uint8_t asc, ascq;
+
+ vtscsi_get_request_lun(event->lun, &target_id, &lun_id);
+
+ asc = event->reason & 0xff;
+ ascq = event->reason >> 8;
+ /*
+ * ASC ASCQ Description
+ * 0x2A 0x00 PARAMETERS CHANGED
+ * 0x2A 0x01 MODE PARAMETERS CHANGED
+ * 0x2A 0x09 CAPACITY DATA HAS CHANGED
+ */
+ if (asc == 0x2a && (ascq == 0x00 || ascq == 0x01 || ascq == 0x09)) {
+ /* Disk capacity has changed. */
+ vtscsi_announce(sc, AC_INQ_CHANGED, target_id, lun_id);
+ }
+}
+
+static void
vtscsi_handle_event(struct vtscsi_softc *sc, struct virtio_scsi_event *event)
{
int error;
@@ -1767,6 +1792,9 @@
case VIRTIO_SCSI_T_TRANSPORT_RESET:
vtscsi_transport_reset_event(sc, event);
break;
+ case VIRTIO_SCSI_T_PARAM_CHANGE:
+ vtscsi_param_change_event(sc, event);
+ break;
default:
device_printf(sc->vtscsi_dev,
"unhandled event: %d\n", event->event);
Index: sys/dev/virtio/scsi/virtio_scsivar.h
===================================================================
--- sys/dev/virtio/scsi/virtio_scsivar.h
+++ sys/dev/virtio/scsi/virtio_scsivar.h
@@ -141,6 +141,7 @@
/* Features desired/implemented by this driver. */
#define VTSCSI_FEATURES \
(VIRTIO_SCSI_F_HOTPLUG | \
+ VIRTIO_SCSI_F_CHANGE | \
VIRTIO_RING_F_INDIRECT_DESC)
#define VTSCSI_MTX(_sc) &(_sc)->vtscsi_mtx

File Metadata

Mime Type
text/plain
Expires
Fri, Apr 24, 5:23 AM (17 h, 1 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
28420655
Default Alt Text
D21807.1777008226.diff (2 KB)

Event Timeline