[3.16.y-ckt stable] Patch "vhost-scsi: Add missing virtio-scsi -> TCM attribute conversion" has been added to staging queue
Luis Henriques
luis.henriques at canonical.com
Mon Jan 26 14:32:09 UTC 2015
This is a note to let you know that I have just added a patch titled
vhost-scsi: Add missing virtio-scsi -> TCM attribute conversion
to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue
This patch is scheduled to be released in version 3.16.7-ckt5.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Luis
------
>From 56bec314f3ff20297fecbaf84fc1562c9433ee70 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab at linux-iscsi.org>
Date: Sun, 21 Dec 2014 10:42:08 -0800
Subject: vhost-scsi: Add missing virtio-scsi -> TCM attribute conversion
commit 46243860806bdc2756f3ce8ac86b4d7c616bcd6c upstream.
While looking at hch's recent conversion to drop the MSG_*_TAG
definitions, I noticed a long standing bug in vhost-scsi where
the VIRTIO_SCSI_S_* attribute definitions where incorrectly
being passed directly into target_submit_cmd_map_sgls().
This patch adds the missing virtio-scsi to TCM/SAM task attribute
conversion.
Cc: Christoph Hellwig <hch at lst.de>
Cc: Michael S. Tsirkin <mst at redhat.com>
Cc: Paolo Bonzini <pbonzini at redhat.com>
Signed-off-by: Nicholas Bellinger <nab at linux-iscsi.org>
[ luis: backported to 3.16:
- replaced TCM_*_TAG by MSG_*_TAG ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
drivers/vhost/scsi.c | 24 +++++++++++++++++++++---
1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index a17f11850669..befe07b1e71d 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -909,6 +909,23 @@ vhost_scsi_map_iov_to_prot(struct tcm_vhost_cmd *cmd,
return 0;
}
+static int vhost_scsi_to_tcm_attr(int attr)
+{
+ switch (attr) {
+ case VIRTIO_SCSI_S_SIMPLE:
+ return MSG_SIMPLE_TAG;
+ case VIRTIO_SCSI_S_ORDERED:
+ return MSG_ORDERED_TAG;
+ case VIRTIO_SCSI_S_HEAD:
+ return MSG_HEAD_TAG;
+ case VIRTIO_SCSI_S_ACA:
+ return MSG_ACA_TAG;
+ default:
+ break;
+ }
+ return MSG_SIMPLE_TAG;
+}
+
static void tcm_vhost_submission_work(struct work_struct *work)
{
struct tcm_vhost_cmd *cmd =
@@ -934,9 +951,10 @@ static void tcm_vhost_submission_work(struct work_struct *work)
rc = target_submit_cmd_map_sgls(se_cmd, tv_nexus->tvn_se_sess,
cmd->tvc_cdb, &cmd->tvc_sense_buf[0],
cmd->tvc_lun, cmd->tvc_exp_data_len,
- cmd->tvc_task_attr, cmd->tvc_data_direction,
- TARGET_SCF_ACK_KREF, sg_ptr, cmd->tvc_sgl_count,
- NULL, 0, sg_prot_ptr, cmd->tvc_prot_sgl_count);
+ vhost_scsi_to_tcm_attr(cmd->tvc_task_attr),
+ cmd->tvc_data_direction, TARGET_SCF_ACK_KREF,
+ sg_ptr, cmd->tvc_sgl_count, NULL, 0, sg_prot_ptr,
+ cmd->tvc_prot_sgl_count);
if (rc < 0) {
transport_send_check_condition_and_sense(se_cmd,
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
--
2.1.4
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