[PATCH 9/9] nvmet: add ZNS based I/O cmds handlers

[Chaitanya Kulkarni]

Add zone-mgmt-send, zone-mgmt-recv and zone-zppend handlers for the
bdev backend so that it can support zbd.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni at wdc.com>
---
 drivers/nvme/target/Makefile      | 3 +--
 drivers/nvme/target/io-cmd-bdev.c | 9 +++++++++
 drivers/nvme/target/zns.c         | 6 +++---
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/nvme/target/Makefile b/drivers/nvme/target/Makefile
index bc147ff2df5d..15307b1cc713 100644
--- a/drivers/nvme/target/Makefile
+++ b/drivers/nvme/target/Makefile
@@ -10,9 +10,8 @@ obj-$(CONFIG_NVME_TARGET_FCLOOP)	+= nvme-fcloop.o
 obj-$(CONFIG_NVME_TARGET_TCP)		+= nvmet-tcp.o
 
 nvmet-y		+= core.o configfs.o admin-cmd.o fabrics-cmd.o \
-			discovery.o io-cmd-file.o io-cmd-bdev.o
+		   zns.o discovery.o io-cmd-file.o io-cmd-bdev.o
 nvmet-$(CONFIG_NVME_TARGET_PASSTHRU)	+= passthru.o
-nvmet-$(CONFIG_BLK_DEV_ZONED)		+= zns.o
 
 nvme-loop-y	+= loop.o
 nvmet-rdma-y	+= rdma.o
diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c
index f8a500983abd..4fcc8374b857 100644
--- a/drivers/nvme/target/io-cmd-bdev.c
+++ b/drivers/nvme/target/io-cmd-bdev.c
@@ -453,6 +453,15 @@ u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req)
 	case nvme_cmd_write_zeroes:
 		req->execute = nvmet_bdev_execute_write_zeroes;
 		return 0;
+	case nvme_cmd_zone_append:
+		req->execute = nvmet_bdev_execute_zone_append;
+		return 0;
+	case nvme_cmd_zone_mgmt_recv:
+		req->execute = nvmet_bdev_execute_zone_mgmt_recv;
+		return 0;
+	case nvme_cmd_zone_mgmt_send:
+		req->execute = nvmet_bdev_execute_zone_mgmt_send;
+		return 0;
 	default:
 		pr_err("unhandled cmd %d on qid %d\n", cmd->common.opcode,
 		       req->sq->qid);
diff --git a/drivers/nvme/target/zns.c b/drivers/nvme/target/zns.c
index 8ea6641a55e3..efd11d7a6f96 100644
--- a/drivers/nvme/target/zns.c
+++ b/drivers/nvme/target/zns.c
@@ -361,17 +361,17 @@ void nvmet_bdev_execute_zone_append(struct nvmet_req *req)
 }
 
 #else  /* CONFIG_BLK_DEV_ZONED */
-static void nvmet_execute_identify_cns_cs_ctrl(struct nvmet_req *req)
+void nvmet_execute_identify_cns_cs_ctrl(struct nvmet_req *req)
 {
 }
-static void nvmet_execute_identify_cns_cs_ns(struct nvmet_req *req)
+void nvmet_execute_identify_cns_cs_ns(struct nvmet_req *req)
 {
 }
 u16 nvmet_process_zns_cis(struct nvmet_req *req, off_t *off)
 {
 	return 0;
 }
-static bool nvmet_bdev_zns_config(struct nvmet_ns *ns)
+bool nvmet_bdev_zns_config(struct nvmet_ns *ns)
 {
 	return false;
 }
-- 
2.22.1