Patch "vhost-scsi: Add missing virtio-scsi -> TCM attribute conversion" has been added to the 3.14-stable tree

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This is a note to let you know that I've just added the patch titled

    vhost-scsi: Add missing virtio-scsi -> TCM attribute conversion

to the 3.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     vhost-scsi-add-missing-virtio-scsi-tcm-attribute-conversion.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 46243860806bdc2756f3ce8ac86b4d7c616bcd6c Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Date: Sun, 21 Dec 2014 10:42:08 -0800
Subject: vhost-scsi: Add missing virtio-scsi -> TCM attribute conversion

From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>

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@xxxxxx>
Cc: Michael S. Tsirkin <mst@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>


---
 drivers/vhost/scsi.c |   24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -861,6 +861,23 @@ vhost_scsi_map_iov_to_sgl(struct tcm_vho
 	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 =
@@ -887,9 +904,10 @@ static void tcm_vhost_submission_work(st
 	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,
-			sg_bidi_ptr, sg_no_bidi, NULL, 0);
+			vhost_scsi_to_tcm_attr(cmd->tvc_task_attr),
+			cmd->tvc_data_direction, TARGET_SCF_ACK_KREF,
+			sg_ptr, cmd->tvc_sgl_count, sg_bidi_ptr, sg_no_bidi,
+			NULL, 0);
 	if (rc < 0) {
 		transport_send_check_condition_and_sense(se_cmd,
 				TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);


Patches currently in stable-queue which might be from nab@xxxxxxxxxxxxxxx are

queue-3.14/vhost-scsi-add-missing-virtio-scsi-tcm-attribute-conversion.patch
queue-3.14/iscsi-target-fail-connection-on-short-sendmsg-writes.patch
queue-3.14/tcm_loop-fixup-tag-handling.patch
queue-3.14/tcm_loop-fix-wrong-i_t-nexus-association.patch
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