From: K. Y. Srinivasan Date: Fri, 27 Mar 2015 07:27:17 +0000 (-0700) Subject: scsi: storvsc: Retrieve information about the capability of the target X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5117b93696fae092be92acf1b80ae19cb28f4ba3;p=linux-beck.git 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: K. Y. Srinivasan Reviewed-by: Long Li Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 0ba7f2cbbbc3..cdf048ba4d2d 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;