nvmf: retrieve namespace UUID from bdev

A new optional parameter is added to the NVMe-oF target namespace
options to set the Namespace UUID, which will be reported via the
Identify command Namespace Identification Descriptor list.

Change-Id: I53c6d6fa6475d3395d412d196b42000715e9ed81
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/400894
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>

include/spdk/nvmf.h

@@ -44,6 +44,7 @@
 #include "spdk/nvme.h"
 #include "spdk/nvmf_spec.h"
 #include "spdk/queue.h"
+#include "spdk/uuid.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -454,6 +455,13 @@ struct spdk_nvmf_ns_opts {
 	 * Fill with 0s if not specified.
 	 */
 	uint8_t eui64[8];
+
+	/**
+	 * Namespace UUID
+	 *
+	 * Fill with 0s if not specified.
+	 */
+	struct spdk_uuid uuid;
 };
 
 /**

lib/event/subsystems/nvmf/nvmf_rpc.c

@@ -263,6 +263,14 @@ dump_nvmf_subsystem(struct spdk_json_write_ctx *w, struct spdk_nvmf_subsystem *s
 				json_write_hex_str(w, ns_opts.eui64, sizeof(ns_opts.eui64));
 			}
 
+			if (!spdk_mem_all_zero(&ns_opts.uuid, sizeof(ns_opts.uuid))) {
+				char uuid_str[SPDK_UUID_STRING_LEN];
+
+				spdk_uuid_fmt_lower(uuid_str, sizeof(uuid_str), &ns_opts.uuid);
+				spdk_json_write_name(w, "uuid");
+				spdk_json_write_string(w, uuid_str);
+			}
+
 			spdk_json_write_object_end(w);
 		}
 		spdk_json_write_array_end(w);

lib/nvmf/ctrlr.c

@@ -1073,15 +1073,16 @@ spdk_nvmf_ctrlr_identify_ns_id_descriptor_list(
 		return SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE;
 	}
 
-#define ADD_ID_DESC(type, data) \
+#define ADD_ID_DESC(type, data, size) \
 	do { \
-		if (!spdk_mem_all_zero(data, sizeof(data))) { \
-			_add_ns_id_desc(&buf_ptr, &buf_remain, type, data, sizeof(data)); \
+		if (!spdk_mem_all_zero(data, size)) { \
+			_add_ns_id_desc(&buf_ptr, &buf_remain, type, data, size); \
 		} \
 	} while (0)
 
-	ADD_ID_DESC(SPDK_NVME_NIDT_EUI64, ns->opts.eui64);
-	ADD_ID_DESC(SPDK_NVME_NIDT_NGUID, ns->opts.nguid);
+	ADD_ID_DESC(SPDK_NVME_NIDT_EUI64, ns->opts.eui64, sizeof(ns->opts.eui64));
+	ADD_ID_DESC(SPDK_NVME_NIDT_NGUID, ns->opts.nguid, sizeof(ns->opts.nguid));
+	ADD_ID_DESC(SPDK_NVME_NIDT_UUID, &ns->opts.uuid, sizeof(ns->opts.uuid));
 
 	/*
 	 * The list is automatically 0-terminated because controller to host buffers in

lib/nvmf/subsystem.c

@@ -885,6 +885,10 @@ spdk_nvmf_subsystem_add_ns(struct spdk_nvmf_subsystem *subsystem, struct spdk_bd
 		memcpy(&opts, user_opts, spdk_min(sizeof(opts), opts_size));
 	}
 
+	if (spdk_mem_all_zero(&opts.uuid, sizeof(opts.uuid))) {
+		opts.uuid = *spdk_bdev_get_uuid(bdev);
+	}
+
 	if (opts.nsid == SPDK_NVME_GLOBAL_NS_TAG) {
 		SPDK_ERRLOG("Invalid NSID %" PRIu32 "\n", opts.nsid);
 		return 0;

test/unit/lib/nvmf/ctrlr.c/ctrlr_ut.c

@@ -635,6 +635,31 @@ test_get_ns_id_desc_list(void)
 	CU_ASSERT(buf[16] == 0x22);
 	CU_ASSERT(buf[31] == 0xEE);
 	CU_ASSERT(buf[33] == 0);
+
+	/* Valid NSID, EUI64, NGUID, and UUID defined */
+	ns.opts.eui64[0] = 0x11;
+	ns.opts.eui64[7] = 0xFF;
+	ns.opts.nguid[0] = 0x22;
+	ns.opts.nguid[15] = 0xEE;
+	ns.opts.uuid.u.raw[0] = 0x33;
+	ns.opts.uuid.u.raw[15] = 0xDD;
+	memset(&rsp, 0, sizeof(rsp));
+	CU_ASSERT(spdk_nvmf_ctrlr_process_admin_cmd(&req) == SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE);
+	CU_ASSERT(rsp.nvme_cpl.status.sct == SPDK_NVME_SCT_GENERIC);
+	CU_ASSERT(rsp.nvme_cpl.status.sc == SPDK_NVME_SC_SUCCESS);
+	CU_ASSERT(buf[0] == SPDK_NVME_NIDT_EUI64);
+	CU_ASSERT(buf[1] == 8);
+	CU_ASSERT(buf[4] == 0x11);
+	CU_ASSERT(buf[11] == 0xFF);
+	CU_ASSERT(buf[12] == SPDK_NVME_NIDT_NGUID);
+	CU_ASSERT(buf[13] == 16);
+	CU_ASSERT(buf[16] == 0x22);
+	CU_ASSERT(buf[31] == 0xEE);
+	CU_ASSERT(buf[32] == SPDK_NVME_NIDT_UUID);
+	CU_ASSERT(buf[33] == 16);
+	CU_ASSERT(buf[36] == 0x33);
+	CU_ASSERT(buf[51] == 0xDD);
+	CU_ASSERT(buf[53] == 0);
 }
 
 int main(int argc, char **argv)

test/unit/lib/nvmf/ctrlr_discovery.c/ctrlr_discovery_ut.c

@@ -76,6 +76,12 @@ spdk_bdev_get_name(const struct spdk_bdev *bdev)
 	return "test";
 }
 
+const struct spdk_uuid *
+spdk_bdev_get_uuid(const struct spdk_bdev *bdev)
+{
+	return &bdev->uuid;
+}
+
 int
 spdk_nvmf_transport_listen(struct spdk_nvmf_transport *transport,
 			   const struct spdk_nvme_transport_id *trid)

test/unit/lib/nvmf/subsystem.c/subsystem_ut.c

@@ -201,6 +201,12 @@ spdk_bdev_get_name(const struct spdk_bdev *bdev)
 	return "test";
 }
 
+const struct spdk_uuid *
+spdk_bdev_get_uuid(const struct spdk_bdev *bdev)
+{
+	return &bdev->uuid;
+}
+
 static void
 test_spdk_nvmf_subsystem_add_ns(void)
 {