From 42201b557471f2fef2e9e028b50a773d99ffc401 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Sat, 18 Jan 2014 09:33:48 +0000
Subject: target/file: Add DIF protection support to fd_execute_rw

This patch adds support for DIF protection into fd_execute_rw() code
for WRITE/READ I/O using sbc_dif_verify_[write,read]() logic.

It adds fd_do_prot_rw() for handling interface with FILEIO PI, and
uses a locally allocated fd_prot->prot_buf + fd_prot->prot_sg for
interacting with SBC DIF verify emulation code.

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>
---
 drivers/target/target_core_file.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'drivers/target/target_core_file.h')

diff --git a/drivers/target/target_core_file.h b/drivers/target/target_core_file.h
index 583691e..97e5e7dd 100644
--- a/drivers/target/target_core_file.h
+++ b/drivers/target/target_core_file.h
@@ -18,6 +18,11 @@
 #define FDBD_HAS_BUFFERED_IO_WCE 0x04
 #define FDBD_FORMAT_UNIT_SIZE	2048
 
+struct fd_prot {
+	unsigned char	*prot_buf;
+	struct scatterlist *prot_sg;
+	u32 prot_sg_nents;
+};
 
 struct fd_dev {
 	struct se_device dev;
-- 
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