diff options
Diffstat (limited to 'vhost_loopback.h')
| -rw-r--r-- | vhost_loopback.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/vhost_loopback.h b/vhost_loopback.h new file mode 100644 index 0000000..198a5af --- /dev/null +++ b/vhost_loopback.h @@ -0,0 +1,80 @@ +/* + * Based on vhost.h of QEMU project + * + * Copyright 2022-2023 Virtual Open Systems SAS. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef LOOPBACK_VHOST_H +#define LOOPBACK_VHOST_H + +#include <stdint.h> +#include <stdbool.h> +#include <stddef.h> +#include <poll.h> +#include <pthread.h> +#include "vhost_user_loopback.h" +#include "virtio_loopback.h" + +#define VHOST_INVALID_FEATURE_BIT (0xff) +#define VHOST_QUEUE_NUM_CONFIG_INR 0 + +int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev); +int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev, bool vrings); +void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, + int n, bool mask); +int vhost_dev_get_config(struct vhost_dev *hdev, uint8_t *config, + uint32_t config_len); +int vhost_dev_set_config(struct vhost_dev *hdev, const uint8_t *data, + uint32_t offset, uint32_t size, uint32_t flags); +uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits, + uint64_t features); +void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits, + uint64_t features); + +/** + * vhost_dev_set_config_notifier() - register VhostDevConfigOps + * @hdev: common vhost_dev_structure + * @ops: notifier ops + * + * If the device is expected to change configuration a notifier can be + * setup to handle the case. + */ + +typedef struct VhostDevConfigOps VhostDevConfigOps; + +void vhost_dev_set_config_notifier(struct vhost_dev *dev, + const VhostDevConfigOps *ops); +int vhost_dev_prepare_inflight(struct vhost_dev *hdev, VirtIODevice *vdev); + +int vhost_dev_get_inflight(struct vhost_dev *dev, uint16_t queue_size, + struct vhost_inflight *inflight); + +int vhost_dev_set_inflight(struct vhost_dev *dev, + struct vhost_inflight *inflight); + +void update_mem_table(VirtIODevice *vdev); + + +struct vhost_inflight { + int fd; + void *addr; + uint64_t size; + uint64_t offset; + uint16_t queue_size; +}; + +#endif /* LOOPBACK_VHOST_H */ |