From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nicholas A. Bellinger" Subject: [RFC-v2 5/6] virtio-scsi: Set max_target=0 during vhost-scsi operation Date: Mon, 13 Aug 2012 08:35:16 +0000 Message-ID: <1344846917-7411-6-git-send-email-nab@linux-iscsi.org> References: <1344846917-7411-1-git-send-email-nab@linux-iscsi.org> Cc: lf-virt , kvm-devel , qemu-devel , Stefan Hajnoczi , Zhi Yong Wu , Anthony Liguori , Paolo Bonzini , "Michael S. Tsirkin" , Christoph Hellwig , Hannes Reinecke , Jan Kiszka , Nicholas Bellinger , Zhi Yong Wu To: target-devel Return-path: In-Reply-To: <1344846917-7411-1-git-send-email-nab@linux-iscsi.org> Sender: target-devel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org From: Nicholas Bellinger This QEMU patch sets VirtIOSCSIConfig->max_target=0 for vhost-scsi operation to restrict virtio-scsi LLD guest scanning to max_id=0 (a single target ID instance) when connected to individual tcm_vhost endpoints. This ensures that virtio-scsi LLD only attempts to scan target IDs up to VIRTIO_SCSI_MAX_TARGET when connected via virtio-scsi-raw. Cc: Stefan Hajnoczi Cc: Zhi Yong Wu Cc: Paolo Bonzini Signed-off-by: Nicholas Bellinger --- hw/virtio-scsi.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/hw/virtio-scsi.c b/hw/virtio-scsi.c index 8130956..5e2ff6b 100644 --- a/hw/virtio-scsi.c +++ b/hw/virtio-scsi.c @@ -545,7 +545,11 @@ static void virtio_scsi_get_config(VirtIODevice *vdev, stl_raw(&scsiconf->sense_size, s->sense_size); stl_raw(&scsiconf->cdb_size, s->cdb_size); stl_raw(&scsiconf->max_channel, VIRTIO_SCSI_MAX_CHANNEL); - stl_raw(&scsiconf->max_target, VIRTIO_SCSI_MAX_TARGET); + if (s->vhost_scsi) { + stl_raw(&scsiconf->max_target, 0); + } else { + stl_raw(&scsiconf->max_target, VIRTIO_SCSI_MAX_TARGET); + } stl_raw(&scsiconf->max_lun, VIRTIO_SCSI_MAX_LUN); } -- 1.7.2.5