9dde5e5c27
Exported lib/bdev/rte_virtio as a separate library not dependent on bdev. Virtio is now accessible via spdk_internal/virtio.h. The header is marked `internal`, as it's not meant to be used by end users. It's not handy to handle all backend-specific (e.g. Virtio-SCSI) logic in a user code. For now the Virtio interface is publicly exposed only via bdev_virtio module. We might want to consider adding a separate, public Virtio-SCSI library in the future. Note: this patch doesn't do any changes to the virtio code. Everything is moved 1:1. Change-Id: I805e5d12d265d82b0bc5784c89fbadb81abdb278 Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com> Reviewed-on: https://review.gerrithub.io/388166 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
95 lines
3.1 KiB
C
95 lines
3.1 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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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_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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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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