From 3f7a46c67440a7fa422919ab2059cbab838ca558 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Mon, 7 Oct 2013 15:22:15 -0700
Subject: [PATCH] target: Allow non zero ListID in EXTENDED_COPY parameter list
This patch changes target_do_xcopy() to allow processing of non-zero
ListIDs in EXTENDED_COPY parameter list data, instead of returning
CHECK_CONDITION status.
As the copy offload implementation reports SNLID=1 (Supports No ListID)
in OPERATING PARAMETERS, any ListID value presented by the client is
currently ignored.
Also, properly extract list_id_usage for informational purposes.
Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---
drivers/target/target_core_xcopy.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 6b9774c1dc6c..fe985559eeb8 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -911,11 +911,8 @@ sense_reason_t target_do_xcopy(struct se_cmd *se_cmd)
}
list_id = p[0];
- if (list_id != 0x00) {
- pr_err("XCOPY with non zero list_id: 0x%02x\n", list_id);
- goto out;
- }
- list_id_usage = (p[1] & 0x18);
+ list_id_usage = (p[1] & 0x18) >> 3;
+
/*
* Determine TARGET DESCRIPTOR LIST LENGTH + SEGMENT DESCRIPTOR LIST LENGTH
*/