target: Handle GET_EVENT_STATUS_NOTIFICATION passthrough

The SCSI MMC GET_EVENT_STATUS_NOTIFICATION command can be used to find
out about media change, among other things.  This patch adds it to the
command sequencer so that PSCSI CD-ROM passthrough works with modern
Linux guests that issue this command.

Tested-by: Cong Meng <mengcong@cn.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 28945d99961..901fb2905ae 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -3143,6 +3143,10 @@ static int transport_generic_cmd_sequencer(
                         cmd->sam_task_attr = MSG_HEAD_TAG;
                 cmd->se_cmd_flags |= SCF_SCSI_CONTROL_SG_IO_CDB;
                 break;
+        case GET_EVENT_STATUS_NOTIFICATION:
+                size = (cdb[7] << 8) | cdb[8];
+                cmd->se_cmd_flags |= SCF_SCSI_CONTROL_SG_IO_CDB;
+                break;
         default:
                 pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode"
                         " 0x%02x, sending CHECK_CONDITION.\n",