59d901ad72
This will let us e.g. read device blocksize in the upcoming vhost-blk initiator. All the public API was already there - we've been using it for virtio-pci. Now we're making use of it for vhost-user as well. Change-Id: I39eab820bb9bbff59c8b8efa79cc97d2ec7806fd Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/398828 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _VHOST_NET_USER_H
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#define _VHOST_NET_USER_H
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#include "spdk/stdinc.h"
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#include <linux/vhost.h>
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#include "spdk_internal/log.h"
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#include "spdk_internal/virtio.h"
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#define VHOST_USER_MAX_CONFIG_SIZE 256
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enum vhost_user_request {
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VHOST_USER_NONE = 0,
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VHOST_USER_GET_FEATURES = 1,
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VHOST_USER_SET_FEATURES = 2,
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VHOST_USER_SET_OWNER = 3,
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VHOST_USER_RESET_OWNER = 4,
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VHOST_USER_SET_MEM_TABLE = 5,
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VHOST_USER_SET_LOG_BASE = 6,
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VHOST_USER_SET_LOG_FD = 7,
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VHOST_USER_SET_VRING_NUM = 8,
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VHOST_USER_SET_VRING_ADDR = 9,
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VHOST_USER_SET_VRING_BASE = 10,
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VHOST_USER_GET_VRING_BASE = 11,
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VHOST_USER_SET_VRING_KICK = 12,
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VHOST_USER_SET_VRING_CALL = 13,
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VHOST_USER_SET_VRING_ERR = 14,
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VHOST_USER_GET_PROTOCOL_FEATURES = 15,
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VHOST_USER_SET_PROTOCOL_FEATURES = 16,
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VHOST_USER_GET_QUEUE_NUM = 17,
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VHOST_USER_SET_VRING_ENABLE = 18,
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VHOST_USER_GET_CONFIG = 24,
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VHOST_USER_SET_CONFIG = 25,
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VHOST_USER_MAX
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};
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struct virtio_user_backend_ops;
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struct virtio_user_dev {
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/* for vhost_user backend */
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int vhostfd;
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/* for both vhost_user and vhost_kernel */
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int callfds[SPDK_VIRTIO_MAX_VIRTQUEUES];
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int kickfds[SPDK_VIRTIO_MAX_VIRTQUEUES];
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uint32_t queue_size;
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uint8_t status;
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char path[PATH_MAX];
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struct vring vrings[SPDK_VIRTIO_MAX_VIRTQUEUES];
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struct virtio_user_backend_ops *ops;
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};
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struct virtio_user_backend_ops {
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int (*setup)(struct virtio_user_dev *dev);
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int (*send_request)(struct virtio_user_dev *dev,
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enum vhost_user_request req,
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void *arg);
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};
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/* get/set config msg */
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struct vhost_user_config {
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uint32_t offset;
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uint32_t size;
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uint32_t flags;
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uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
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};
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extern struct virtio_user_backend_ops ops_user;
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extern struct virtio_user_backend_ops ops_kernel;
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#endif
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