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ACRN: DM: Implement the vhost vsock

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This patch supports the user space logic of vhost vsock which
is majorly for its initialization phase.

Tracked-On: #7456
Signed-off-by: Liu Long <long.liu@linux.intel.com>
Reviewed-by: Conghui <conghui.chen@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
This commit is contained in:
Liu Long
2022-05-11 14:11:16 +08:00
committed by acrnsi-robot
parent 231f986bd9
commit 46e41390b5
4 changed files with 396 additions and 0 deletions
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54
devicemodel/include/vhost_vsock.h Normal file
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@@ -0,0 +1,54 @@
/*
* Copyright (C) 2018 Intel Corporation.
* Copyright (C) 2022 Intel Corporation.
*
* SPDX-License-Identifier: BSD-3-Clause
*
*/
/**
* @file vhost_vsock.h
*/
#ifndef __VHOST_VSOCK_H__
#define __VHOST_VSOCK_H__
#include "virtio.h"
#include "vhost.h"
#define VHOST_VSOCK_RXQ 0
#define VHOST_VSOCK_TXQ 1
#define VHOST_VSOCK_CTLQ 2 /* NB: not yet supported */
#define VHOST_VSOCK_MAXQ 3
#define VHOST_VSOCK_QUEUE_SIZE 128
#define VHOST_F_LOG_ALL 26
#define VHOST_VSOCK_FEATURES \
(1ULL << VIRTIO_F_NOTIFY_ON_EMPTY) | (1ULL << VIRTIO_RING_F_INDIRECT_DESC) | \
(1ULL << VIRTIO_RING_F_EVENT_IDX) | (1ULL << VHOST_F_LOG_ALL) | \
(1ULL << VIRTIO_F_ANY_LAYOUT) | (1ULL << VIRTIO_F_VERSION_1)
#define U32_MAX 65535
#define VMADDR_CID_HOST 2
struct virtio_vsock_config {
uint64_t guest_cid;
}__attribute__((packed));
struct virtio_vsock {
struct virtio_base base;
pthread_mutex_t mtx;
struct virtio_vq_info queues[VHOST_VSOCK_MAXQ];
struct virtio_vsock_config config;
struct vhost_vsock *vhost_vsock;
uint64_t features;
};
struct vhost_vsock {
struct vhost_dev vdev;
struct vhost_vq vqs[VHOST_VSOCK_MAXQ];
int vhost_fd;
bool vhost_started;
};
#endif

1
devicemodel/include/virtio.h
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@@ -221,6 +221,7 @@ enum {
#define VIRTIO_DEV_CONSOLE 0x1003
#define VIRTIO_DEV_RANDOM 0x1005
#define VIRTIO_DEV_GPU 0x1050
#define VIRTIO_DEV_VSOCK 0x1053
/*
* ACRN virtio device IDs