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| author |   K. Y. Srinivasan <kys@microsoft.com> | 2015-03-27 00:27:17 -0700 |
|---|---|---|
| committer |   James Bottomley <JBottomley@Odin.com> | 2015-04-09 13:22:11 -0700 |
| commit | 5117b93696fae092be92acf1b80ae19cb28f4ba3 (patch) | |
| tree | 638ec500cf800b939fa911a31f8082b9f0d3d7e1 /drivers/scsi/storvsc_drv.c | |
| parent | scsi: storvsc: Always send on the selected outgoing channel (diff) | |
| download | linux-dev-5117b93696fae092be92acf1b80ae19cb28f4ba3.tar.xz linux-dev-5117b93696fae092be92acf1b80ae19cb28f4ba3.zip | |
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 <kys@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
| -rw-r--r-- | 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 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; |