[PATCH 4.4 01/18] target: add XCOPY target/segment desc sense codes

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

From: David Disseldorp <ddiss@suse.de>

[ Upstream commit 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@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Sasha Levin <sashal@kernel.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 7199bac673335..96cf2448a1f4f 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1730,6 +1730,10 @@ 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;
@@ -2864,6 +2868,26 @@ 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 0eed9fd79ea55..5aa8e0e62e309 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -181,6 +181,10 @@ 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
 };
 
-- 
2.27.0