From: "K. Y. Srinivasan" <kys@microsoft.com>
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org, ohering@suse.com,
jbottomley@parallels.com, hch@infradead.org,
linux-scsi@vger.kernel.org, apw@canonical.com,
vkuznets@redhat.com
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Subject: [PATCH 1/3] scsi: storvsc: Retrieve information about the capability of the target
Date: Mon, 9 Mar 2015 20:45:05 -0700 [thread overview]
Message-ID: <1425959107-24199-1-git-send-email-kys@microsoft.com> (raw)
In-Reply-To: <1425958941-23374-1-git-send-email-kys@microsoft.com>
The storage protocol informs the guest of the I/O capabilities of the storage
stack. Retrieve this information and use it in the guest.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
---
drivers/scsi/storvsc_drv.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index be8f12e..5c13eec 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -377,6 +377,10 @@ struct storvsc_device {
unsigned char path_id;
unsigned char target_id;
+ /*
+ * Max I/O, the device can support.
+ */
+ u32 max_transfer_bytes;
/* Used for vsc/vsp channel reset process */
struct storvsc_cmd_request init_request;
struct storvsc_cmd_request reset_request;
@@ -974,6 +978,8 @@ static int storvsc_channel_init(struct hv_device *device)
STORAGE_CHANNEL_SUPPORTS_MULTI_CHANNEL)
process_sub_channels = true;
}
+ stor_device->max_transfer_bytes =
+ vstor_packet->storage_channel_properties.max_transfer_bytes;
memset(vstor_packet, 0, sizeof(struct vstor_packet));
vstor_packet->operation = VSTOR_OPERATION_END_INITIALIZATION;
--
1.7.4.1
next prev parent reply other threads:[~2015-03-10 2:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-10 3:42 [PATCH 0/3] scsi: storvsc: Increase the tablesize based on host's capabilities K. Y. Srinivasan
2015-03-10 3:45 ` K. Y. Srinivasan [this message]
2015-03-10 3:45 ` [PATCH 2/3] scsi: storvsc: Set the tablesize based on the information given by the host K. Y. Srinivasan
2015-03-10 3:45 ` [PATCH 3/3] scsi: storvsc: Enable clustering K. Y. Srinivasan
2015-03-16 23:47 ` [PATCH 0/3] scsi: storvsc: Increase the tablesize based on host's capabilities KY Srinivasan
2015-03-22 2:03 ` KY Srinivasan
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