[RFCv2 1/7] virtio-scsi.h: Add virtio_scsi_cmd_req_pi header definition

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>

This patch adds a virtio_scsi_cmd_req_pi header as recommened by
Paolo that contains do_pi_niov + di_pi_niov elements used for
signaling when protection information buffers are expected to
preceed the data buffers.

Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Michael S. Tsirkin <mst@xxxxxxxxxx>
Cc: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxx>
Cc: Sagi Grimberg <sagig@xxxxxxxxxxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
---
 include/linux/virtio_scsi.h |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/include/linux/virtio_scsi.h b/include/linux/virtio_scsi.h
index 4195b97..4dc5998 100644
--- a/include/linux/virtio_scsi.h
+++ b/include/linux/virtio_scsi.h
@@ -35,11 +35,23 @@ struct virtio_scsi_cmd_req {
 	u8 lun[8];		/* Logical Unit Number */
 	u64 tag;		/* Command identifier */
 	u8 task_attr;		/* Task attribute */
-	u8 prio;
+	u8 prio;		/* SAM command priority field */
 	u8 crn;
 	u8 cdb[VIRTIO_SCSI_CDB_SIZE];
 } __packed;
 
+/* SCSI command request, followed by protection information */
+struct virtio_scsi_cmd_req_pi {
+	u8 lun[8];		/* Logical Unit Number */
+	u64 tag;		/* Command identifier */
+	u8 task_attr;		/* Task attribute */
+	u8 prio;		/* SAM command priority field */
+	u8 crn;
+	u16 do_pi_niov;		/* DataOUT PI Number of iovecs */
+	u16 di_pi_niov;		/* DataIN PI Number of iovecs */
+	u8 cdb[VIRTIO_SCSI_CDB_SIZE];
+} __packed;
+
 /* Response, followed by sense data and data-in */
 struct virtio_scsi_cmd_resp {
 	u32 sense_len;		/* Sense data length */
-- 
1.7.2.5

--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]
  Powered by Linux