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Commit 5117b936 authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by James Bottomley
Browse files

scsi: storvsc: Retrieve information about the capability of the target 



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: default avatarK. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: default avatarLong Li <longli@microsoft.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Odin.com>
parent 0147dabc

drivers/scsi/storvsc_drv.c

+6 −0
Original line number Diff line number Diff line
@@ -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;