This is a note to let you know that I've just added the patch titled
Drivers: scsi: storvsc: Filter commands based on the storage protocol version
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:
drivers-scsi-storvsc-filter-commands-based-on-the-storage-protocol-version.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 8caf92d80526f3d7cc96831ec18b384ebcaccdf0 Mon Sep 17 00:00:00 2001
From: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>
Date: Sat, 12 Jul 2014 09:48:28 -0700
Subject: Drivers: scsi: storvsc: Filter commands based on the storage protocol version
From: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>
commit 8caf92d80526f3d7cc96831ec18b384ebcaccdf0 upstream.
Going forward it is possible that some of the commands that are not currently
implemented will be implemented on future Windows hosts. Even if they are not
implemented, we are told the host will corrrectly handle unsupported
commands (by returning appropriate return code and sense information).
Make command filtering depend on the host version.
Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/storvsc_drv.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1564,9 +1564,19 @@ static int storvsc_queuecommand(struct S
struct vmscsi_request *vm_srb;
struct stor_mem_pools *memp = scmnd->device->hostdata;
- if (!storvsc_scsi_cmd_ok(scmnd)) {
- scmnd->scsi_done(scmnd);
- return 0;
+ if (vmstor_current_major <= VMSTOR_WIN8_MAJOR) {
+ /*
+ * On legacy hosts filter unimplemented commands.
+ * Future hosts are expected to correctly handle
+ * unsupported commands. Furthermore, it is
+ * possible that some of the currently
+ * unsupported commands maybe supported in
+ * future versions of the host.
+ */
+ if (!storvsc_scsi_cmd_ok(scmnd)) {
+ scmnd->scsi_done(scmnd);
+ return 0;
+ }
}
request_size = sizeof(struct storvsc_cmd_request);
Patches currently in stable-queue which might be from kys@xxxxxxxxxxxxx are
queue-3.14/drivers-scsi-storvsc-implement-a-eh_timed_out-handler.patch
queue-3.14/drivers-scsi-storvsc-correctly-handle-test_unit_ready-failure.patch
queue-3.14/drivers-scsi-storvsc-set-srb_flags-in-all-cases.patch
queue-3.14/drivers-scsi-storvsc-fix-a-bug-in-handling-vmbus-protocol-version.patch
queue-3.14/scsi-add-a-blacklist-flag-which-enables-vpd-page-inquiries.patch
queue-3.14/drivers-scsi-storvsc-change-the-limits-to-reflect-the-values-on-the-host.patch
queue-3.14/drivers-scsi-storvsc-filter-commands-based-on-the-storage-protocol-version.patch
queue-3.14/drivers-scsi-storvsc-set-cmd_per_lun-to-reflect-value-supported-by-the-host.patch
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