[Devel] [PATCH RHEL7 COMMIT] ms/target: add XCOPY target/segment desc sense codes

[Konstantin Khorenko]

The commit is pushed to "branch-rh7-3.10.0-693.21.1.vz7.46.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-693.21.1.vz7.46.3
------>
commit 08dda4815e113e2a22f2a645c9818cc8f70a1910
Author: David Disseldorp <ddiss at suse.de>
Date:   Tue Apr 3 16:11:32 2018 +0300

    ms/target: add XCOPY target/segment desc sense codes
    
    ML: e864212078ded276bdb272b2e0ee6a979357ca8a
    
    As defined in http://www.t10.org/lists/asc-num.htm. To be used during
    validation of XCOPY target and segment descriptor lists.
    
    Signed-off-by: David Disseldorp <ddiss at suse.de>
    Reviewed-by: Christoph Hellwig <hch at lst.de>
    Signed-off-by: Bart Van Assche <bart.vanassche at sandisk.com>
    Signed-off-by: Andrei Vagin <avagin at openvz.org>
---
 drivers/target/target_core_transport.c | 24 ++++++++++++++++++++++++
 include/target/target_core_base.h      |  4 ++++
 2 files changed, 28 insertions(+)

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 9b187cf1c5b0..31bd70e19e9f 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1657,6 +1657,10 @@ void transport_generic_request_failure(struct se_cmd *cmd,
 	case TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED:
 	case TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED:
 	case TCM_COPY_TARGET_DEVICE_NOT_REACHABLE:
+	case TCM_TOO_MANY_TARGET_DESCS:
+	case TCM_UNSUPPORTED_TARGET_DESC_TYPE_CODE:
+	case TCM_TOO_MANY_SEGMENT_DESCS:
+	case TCM_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE:
 		break;
 	case TCM_OUT_OF_RESOURCES:
 		sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
@@ -2794,6 +2798,26 @@ static const struct sense_info sense_info_table[] = {
 		.key = ILLEGAL_REQUEST,
 		.asc = 0x26, /* INVALID FIELD IN PARAMETER LIST */
 	},
+	[TCM_TOO_MANY_TARGET_DESCS] = {
+		.key = ILLEGAL_REQUEST,
+		.asc = 0x26,
+		.ascq = 0x06, /* TOO MANY TARGET DESCRIPTORS */
+	},
+	[TCM_UNSUPPORTED_TARGET_DESC_TYPE_CODE] = {
+		.key = ILLEGAL_REQUEST,
+		.asc = 0x26,
+		.ascq = 0x07, /* UNSUPPORTED TARGET DESCRIPTOR TYPE CODE */
+	},
+	[TCM_TOO_MANY_SEGMENT_DESCS] = {
+		.key = ILLEGAL_REQUEST,
+		.asc = 0x26,
+		.ascq = 0x08, /* TOO MANY SEGMENT DESCRIPTORS */
+	},
+	[TCM_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE] = {
+		.key = ILLEGAL_REQUEST,
+		.asc = 0x26,
+		.ascq = 0x09, /* UNSUPPORTED SEGMENT DESCRIPTOR TYPE CODE */
+	},
 	[TCM_PARAMETER_LIST_LENGTH_ERROR] = {
 		.key = ILLEGAL_REQUEST,
 		.asc = 0x1a, /* PARAMETER LIST LENGTH ERROR */
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 00ec289bccaa..a72b5a53aae0 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -209,6 +209,10 @@ enum tcm_sense_reason_table {
 	TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED	= R(0x16),
 	TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED	= R(0x17),
 	TCM_COPY_TARGET_DEVICE_NOT_REACHABLE	= R(0x18),
+	TCM_TOO_MANY_TARGET_DESCS		= R(0x19),
+	TCM_UNSUPPORTED_TARGET_DESC_TYPE_CODE	= R(0x1a),
+	TCM_TOO_MANY_SEGMENT_DESCS		= R(0x1b),
+	TCM_UNSUPPORTED_SEGMENT_DESC_TYPE_CODE	= R(0x1c),
 #undef R
 };