net/virtio-user: support reply-ack

[dpdk.git] / drivers / net / virtio / virtio_user / vhost.h

diff --git a/drivers/net/virtio/virtio_user/vhost.h b/drivers/net/virtio/virtio_user/vhost.h
index e54ac35..260e1c3 100644 (file)
--- a/drivers/net/virtio/virtio_user/vhost.h
+++ b/drivers/net/virtio/virtio_user/vhost.h
@@ -1,38 +1,9 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
- *   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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2016 Intel Corporation
  */
 
-#ifndef _VHOST_NET_USER_H
-#define _VHOST_NET_USER_H
+#ifndef _VIRTIO_USER_VHOST_H
+#define _VIRTIO_USER_VHOST_H
 
 #include <stdint.h>
 #include <linux/types.h>
@@ -73,6 +44,19 @@ struct vhost_vring_addr {
        uint64_t log_guest_addr;
 };
 
+#ifndef VHOST_USER_F_PROTOCOL_FEATURES
+#define VHOST_USER_F_PROTOCOL_FEATURES 30
+#endif
+
+/** Protocol features. */
+#ifndef VHOST_USER_PROTOCOL_F_MQ
+#define VHOST_USER_PROTOCOL_F_MQ 0
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_REPLY_ACK
+#define VHOST_USER_PROTOCOL_F_REPLY_ACK 3
+#endif
+
 enum vhost_user_request {
        VHOST_USER_NONE = 0,
        VHOST_USER_GET_FEATURES = 1,
@@ -96,6 +80,8 @@ enum vhost_user_request {
        VHOST_USER_MAX
 };
 
+extern const char * const vhost_msg_strings[VHOST_USER_MAX];
+
 struct vhost_memory_region {
        uint64_t guest_phys_addr;
        uint64_t memory_size; /* bytes */
@@ -103,8 +89,19 @@ struct vhost_memory_region {
        uint64_t mmap_offset;
 };
 
-int vhost_user_sock(int vhostfd, enum vhost_user_request req, void *arg);
-int vhost_user_setup(const char *path);
-int vhost_user_enable_queue_pair(int vhostfd, uint16_t pair_idx, int enable);
+struct virtio_user_dev;
+
+struct virtio_user_backend_ops {
+       int (*setup)(struct virtio_user_dev *dev);
+       int (*send_request)(struct virtio_user_dev *dev,
+                           enum vhost_user_request req,
+                           void *arg);
+       int (*enable_qp)(struct virtio_user_dev *dev,
+                        uint16_t pair_idx,
+                        int enable);
+};
+
+extern struct virtio_user_backend_ops virtio_ops_user;
+extern struct virtio_user_backend_ops virtio_ops_kernel;
 
 #endif