nvme: introduce "Command Aborted By host" status code

mainline inclusion
from mainline-v5.5-rc1
commit 2dc3947b
category: bugfix
bugzilla: NA
CVE: NA
Link: https://gitee.com/openeuler/kernel/issues/I1WGZE

--------------------------------

Fix the status code of canceled requests initiated by the host according
to TP4028 (Status Code 0x371):
"Command Aborted By host: The command was aborted as a result of host
action (e.g., the host disconnected the Fabric connection)."

Also in a multipath environment, unless otherwise specified, errors of
this type (path related) should be retried using a different path, if
one is available.
Signed-off-by: NMax Gurtovoy <maxg@mellanox.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKeith Busch <kbusch@kernel.org>
Signed-off-by: NJens Axboe <axboe@kernel.dk>
Reviewed-by: NChao Leng <lengchao@huawei.com>
Reviewed-by: NJike Cheng <chengjike.cheng@huawei.com>
Signed-off-by: NLijie <lijie34@huawei.com>
Reviewed-by: NTao Hou <houtao1@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/nvme/host/core.c

@@ -298,7 +298,7 @@ void nvme_cancel_request(struct request *req, void *data, bool reserved)
 	if (blk_mq_request_completed(req))
 		return;
 
-	nvme_req(req)->status = NVME_SC_ABORT_REQ;
+	nvme_req(req)->status = NVME_SC_HOST_ABORTED_CMD;
 	blk_mq_complete_request(req);
 
 }

drivers/nvme/host/multipath.c

@@ -98,6 +98,7 @@ bool nvme_failover_req(struct request *req)
 		}
 		break;
 	case NVME_SC_HOST_PATH_ERROR:
+	case NVME_SC_HOST_ABORTED_CMD:
 		/*
 		 * Temporary transport disruption in talking to the controller.
 		 * Try to send on a new path.

include/linux/nvme.h

@@ -1256,6 +1256,7 @@ enum {
 	NVME_SC_ANA_INACCESSIBLE	= 0x302,
 	NVME_SC_ANA_TRANSITION		= 0x303,
 	NVME_SC_HOST_PATH_ERROR		= 0x370,
+	NVME_SC_HOST_ABORTED_CMD	= 0x371,
 
 	NVME_SC_CRD			= 0x1800,
 	NVME_SC_DNR			= 0x4000,