diff options
Diffstat (limited to 'src/spdk/lib/virtio/virtio_user/vhost.h')
| -rw-r--r-- | src/spdk/lib/virtio/virtio_user/vhost.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/spdk/lib/virtio/virtio_user/vhost.h b/src/spdk/lib/virtio/virtio_user/vhost.h new file mode 100644 index 00000000..0ac7c5b1 --- /dev/null +++ b/src/spdk/lib/virtio/virtio_user/vhost.h @@ -0,0 +1,113 @@ +/*- + * 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. + */ + +#ifndef _VHOST_NET_USER_H +#define _VHOST_NET_USER_H + +#include "spdk/stdinc.h" + +#include <linux/vhost.h> + +#include "spdk_internal/log.h" +#include "spdk_internal/virtio.h" + +#define VHOST_USER_MAX_CONFIG_SIZE 256 + +#ifndef VHOST_USER_PROTOCOL_F_MQ +#define VHOST_USER_PROTOCOL_F_MQ 0 +#endif + +#ifndef VHOST_USER_PROTOCOL_F_CONFIG +#define VHOST_USER_PROTOCOL_F_CONFIG 9 +#endif + +enum vhost_user_request { + VHOST_USER_NONE = 0, + VHOST_USER_GET_FEATURES = 1, + VHOST_USER_SET_FEATURES = 2, + VHOST_USER_SET_OWNER = 3, + VHOST_USER_RESET_OWNER = 4, + VHOST_USER_SET_MEM_TABLE = 5, + VHOST_USER_SET_LOG_BASE = 6, + VHOST_USER_SET_LOG_FD = 7, + VHOST_USER_SET_VRING_NUM = 8, + VHOST_USER_SET_VRING_ADDR = 9, + VHOST_USER_SET_VRING_BASE = 10, + VHOST_USER_GET_VRING_BASE = 11, + VHOST_USER_SET_VRING_KICK = 12, + VHOST_USER_SET_VRING_CALL = 13, + VHOST_USER_SET_VRING_ERR = 14, + VHOST_USER_GET_PROTOCOL_FEATURES = 15, + VHOST_USER_SET_PROTOCOL_FEATURES = 16, + VHOST_USER_GET_QUEUE_NUM = 17, + VHOST_USER_SET_VRING_ENABLE = 18, + VHOST_USER_GET_CONFIG = 24, + VHOST_USER_SET_CONFIG = 25, + VHOST_USER_MAX +}; + +struct virtio_user_backend_ops; + +struct virtio_user_dev { + int vhostfd; + + int callfds[SPDK_VIRTIO_MAX_VIRTQUEUES]; + int kickfds[SPDK_VIRTIO_MAX_VIRTQUEUES]; + uint32_t queue_size; + + uint8_t status; + char path[PATH_MAX]; + uint64_t protocol_features; + struct vring vrings[SPDK_VIRTIO_MAX_VIRTQUEUES]; + struct virtio_user_backend_ops *ops; + struct spdk_mem_map *mem_map; +}; + +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); +}; + +/* get/set config msg */ +struct vhost_user_config { + uint32_t offset; + uint32_t size; + uint32_t flags; + uint8_t region[VHOST_USER_MAX_CONFIG_SIZE]; +}; + +extern struct virtio_user_backend_ops ops_user; + +#endif |