1 files changed, 52 insertions, 0 deletions
diff --git a/src/kernel/mq.h b/src/kernel/mq.h
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+++ b/src/kernel/mq.h
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+/*
+ * This file is part of the Distributed Network Block Device 3
+ *
+ * Copyright(c) 2019 Frederic Robra <frederic@robra.org>
+ *
+ * This file may be licensed under the terms of of the
+ * GNU General Public License Version 2 (the ``GPL'').
+ *
+ * Software distributed under the License is distributed
+ * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
+ * express or implied. See the GPL for the specific language
+ * governing rights and limitations.
+ *
+ * You should have received a copy of the GPL along with this
+ * program. If not, go to http://www.gnu.org/licenses/gpl.html
+ * or write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef MQ_H_
+#define MQ_H_
+
+#include "dnbd3.h"
+
+/**
+ * dnbd3_is_mq_busy - check if mq is busy
+ * @dev: the device
+ */
+bool dnbd3_is_mq_busy(struct dnbd3_device *dev);
+
+/**
+ * dnbd3_requeue_cmd - requeue a command once
+ * @cmd: the command to requeue
+ */
+void dnbd3_requeue_cmd(struct dnbd3_cmd *cmd);
+
+
+/**
+ * dnbd3_end_request - end a blk request
+ * @cmd: the command to end the request with
+ * @error: the status
+ */
+void dnbd3_end_cmd(struct dnbd3_cmd *cmd, blk_status_t error);
+
+/**
+ * struct blk_mq_ops - dnbd3_mq_ops
+ * multiqueue operations
+ */
+extern struct blk_mq_ops dnbd3_mq_ops;
+
+#endif /* MQ_H_ */