diff options
| author | Nicholas Bellinger <[email protected]> | 2014-03-16 14:51:35 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <[email protected]> | 2014-06-02 12:41:33 -0700 |
| commit | 1b49dcf3d7c765ad18ca7167a0e441824eb1f7af (patch) | |
| tree | 5bb2c91afddab39abe6a29e507acde2f6b67ee18 | |
| parent | 5f80ff8eccba50832dcc640ac89add4c7fced963 (diff) | |
virtio-scsi.h: Add virtio_scsi_cmd_req_pi + VIRTIO_SCSI_F_T10_PI bits
This patch adds a virtio_scsi_cmd_req_pi header as recommened by
Paolo that contains pi_bytesout + pi_bytesin elements used for
signaling when protection information buffers (in bytes) are
expected to preceed the data payload buffers.
Also add new VIRTIO_SCSI_F_T10_PI feature bit to be used to signal
host support.
Cc: Paolo Bonzini <[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]>
Acked-by: Rusty Russell <[email protected]>
Acked-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
| -rw-r--r-- | include/linux/virtio_scsi.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/virtio_scsi.h b/include/linux/virtio_scsi.h index 4195b97a3def..de429d1f4357 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; + u32 pi_bytesout; /* DataOUT PI Number of bytes */ + u32 pi_bytesin; /* DataIN PI Number of bytes */ + 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 */ @@ -97,6 +109,7 @@ struct virtio_scsi_config { #define VIRTIO_SCSI_F_INOUT 0 #define VIRTIO_SCSI_F_HOTPLUG 1 #define VIRTIO_SCSI_F_CHANGE 2 +#define VIRTIO_SCSI_F_T10_PI 3 /* Response codes */ #define VIRTIO_SCSI_S_OK 0 |