From 499bf77b0169605a23c38351e3849066fe696877 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Mon, 23 Dec 2013 20:30:03 +0000
Subject: [PATCH] target/sbc: Add DIF setup in sbc_check_prot + sbc_parse_cdb

This patch adds sbc_check_prot() for performing various DIF
related CDB sanity checks, along with setting cmd->prot_type
once sanity checks have passed.

Also, add calls in sbc_parse_cdb() for READ_[10,12,16] +
WRITE_[10,12,16] to perform DIF sanity checking.

v2 changes:
  - Make sbc_check_prot defined as static (Fengguang + Wei)
  - Remove unprotected READ/WRITE warning (mkp)
  - Populate cmd->prot_type + friends (Sagi)
  - Drop SCF_PROT usage

Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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