iSCSI Expected Data Transfer Length for T10-PI

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Hey All,

Recently, iSER end-to-end T10-PI support maid it mainline.
I am wandering about the impact T10-PI should or shouldn't have on iSCSI header
field "Expected Data Transfer Length".

RFC-7143 states:
"the Expected Data Transfer Length field contains the number of bytes of data involved in this SCSI operation." Since this field relates to *data bytes* I kept T10-PI implicit wrt this field. The iSCSI target calculates the total transfer length (data + protection) from the cdb transfer length field and protect bits.

In FC, the fc_dl field was updated to relate to the total number of transfer bytes and includes data and protection bytes. virtio_scsi was added with a header PI section (virtio_scsi_cmd_req_pi).

So my question is, should this field be updated to explicitly include T10-PI bytes like the FC equivalent fc_dl?
Or should T10-PI bytes be implicit?

I want to pin down this one to avoid a situation where the standard is open for interpretations.

Thanks,
Sagi.
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