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SubjectRe: [PATCH 09/14] target/configfs: Expose protection device attributes
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>>>>> "nab" == Nicholas A Bellinger <nab@daterainc.com> writes:

nab> This patch adds support for exposing DIF protection device
nab> attributes via configfs. This includes:

nab> pi_prot_type: Protection Type (0, 1, 3 currently support)
nab> pi_prot_version: Protection Version (DIF v1 currently supported)

What's DIF v2?

nab> pi_guard_type: Guard Type (1=DIF CRC, 2=IP CRC)

The IP checksum is only supported by DIX between OS and initiator, not
by the target. I guess we could signal to the initiator via a
vendor-private VPD that IP checksum is supported directly. But now what
we have hardware-accelerated T10 CRC I don't think it's a big deal.

(scsi_debug supports IP checksum because it's both initiator and
target).

--
Martin K. Petersen Oracle Linux Engineering


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