event/subsystem/vmd: RPC support

Added enable_vmd RPC call.

Change-Id: Ib0bea12f097a46a8be537a1db8aace6cb3b9b699
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/459949
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>

lib/event/subsystems/vmd/Makefile

@@ -34,7 +34,7 @@
 SPDK_ROOT_DIR := $(abspath $(CURDIR)/../../../..)
 include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
 
-C_SRCS = vmd.c
+C_SRCS = vmd.c vmd_rpc.c
 LIBNAME = event_vmd
 
 include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk

lib/event/subsystems/vmd/vmd_rpc.c

@@ -0,0 +1,58 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) Intel Corporation.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "spdk/vmd.h"
+
+#include "spdk/rpc.h"
+#include "spdk/util.h"
+
+#include "spdk_internal/log.h"
+
+static void
+spdk_rpc_vmd_enable(struct spdk_jsonrpc_request *request, const struct spdk_json_val *params)
+{
+	struct spdk_json_write_ctx *w;
+	int rc;
+
+	rc = spdk_vmd_init();
+
+	w = spdk_jsonrpc_begin_result(request);
+	if (w == NULL) {
+		return;
+	}
+
+	spdk_json_write_bool(w, rc == 0);
+	spdk_jsonrpc_end_result(request, w);
+}
+
+SPDK_RPC_REGISTER("enable_vmd", spdk_rpc_vmd_enable, SPDK_RPC_STARTUP)

scripts/rpc.py

@@ -1360,6 +1360,13 @@ Format: 'user:u1 secret:s1 muser:mu1 msecret:ms1,user:u2 secret:s2 muser:mu2 mse
     p.add_argument('-b', '--name', help="Name of the bdev", required=True)
     p.set_defaults(func=delete_ftl_bdev)
 
+    # vmd
+    def enable_vmd(args):
+        print_dict(rpc.vmd.enable_vmd(args.client))
+
+    p = subparsers.add_parser('enable_vmd', help='Enable VMD enumeration')
+    p.set_defaults(func=enable_vmd)
+
     # nbd
     def start_nbd_disk(args):
         print(rpc.nbd.start_nbd_disk(args.client,

scripts/rpc/__init__.py

@@ -16,6 +16,7 @@ from . import pmem
 from . import subsystem
 from . import trace
 from . import vhost
+from . import vmd
 from . import client as rpc_client
 from .helpers import deprecated_alias
 

scripts/rpc/vmd.py

@@ -0,0 +1,3 @@
+def enable_vmd(client):
+    """Enable VMD enumeration."""
+    return client.call('enable_vmd')