Re: [PATCH 09/14] target/configfs: Expose protection device attributes

[Martin K. Petersen]

>>>>> "nab" == Nicholas A Bellinger <nab@xxxxxxxxxxxxx> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/