From: Nicholas Bellinger <[email protected]> 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 <[email protected]> Cc: Michael S. Tsirkin <[email protected]> Cc: Martin K. Petersen <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Hannes Reinecke <[email protected]> Cc: Sagi Grimberg <[email protected]> Cc: H. Peter Anvin <[email protected]> Signed-off-by: Nicholas Bellinger <[email protected]> --- 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 kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
