projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 11fdf7f2 TL |
1 | /* SPDX-License-Identifier: BSD-3-Clause |
| 2 | * Copyright(c) 2010-2016 Intel Corporation | |
| 3 | */ | |
| 4 | ||
| 9f95a23c TL |
5 | #ifndef _VIRTIO_USER_VHOST_H |
| 6 | #define _VIRTIO_USER_VHOST_H | |
| 11fdf7f2 TL |
7 | |
| 8 | #include <stdint.h> | |
| 9 | #include <linux/types.h> | |
| 10 | #include <linux/ioctl.h> | |
| 11 | ||
| 12 | #include "../virtio_pci.h" | |
| 13 | #include "../virtio_logs.h" | |
| 14 | #include "../virtqueue.h" | |
| 15 | ||
| 16 | struct vhost_vring_state { | |
| 17 | unsigned int index; | |
| 18 | unsigned int num; | |
| 19 | }; | |
| 20 | ||
| 21 | struct vhost_vring_file { | |
| 22 | unsigned int index; | |
| 23 | int fd; | |
| 24 | }; | |
| 25 | ||
| 26 | struct vhost_vring_addr { | |
| 27 | unsigned int index; | |
| 28 | /* Option flags. */ | |
| 29 | unsigned int flags; | |
| 30 | /* Flag values: */ | |
| 31 | /* Whether log address is valid. If set enables logging. */ | |
| 32 | #define VHOST_VRING_F_LOG 0 | |
| 33 | ||
| 34 | /* Start of array of descriptors (virtually contiguous) */ | |
| 35 | uint64_t desc_user_addr; | |
| 36 | /* Used structure address. Must be 32 bit aligned */ | |
| 37 | uint64_t used_user_addr; | |
| 38 | /* Available structure address. Must be 16 bit aligned */ | |
| 39 | uint64_t avail_user_addr; | |
| 40 | /* Logging support. */ | |
| 41 | /* Log writes to used structure, at offset calculated from specified | |
| 42 | * address. Address must be 32 bit aligned. | |
| 43 | */ | |
| 44 | uint64_t log_guest_addr; | |
| 45 | }; | |
| 46 | ||
| 47 | enum vhost_user_request { | |
| 48 | VHOST_USER_NONE = 0, | |
| 49 | VHOST_USER_GET_FEATURES = 1, | |
| 50 | VHOST_USER_SET_FEATURES = 2, | |
| 51 | VHOST_USER_SET_OWNER = 3, | |
| 52 | VHOST_USER_RESET_OWNER = 4, | |
| 53 | VHOST_USER_SET_MEM_TABLE = 5, | |
| 54 | VHOST_USER_SET_LOG_BASE = 6, | |
| 55 | VHOST_USER_SET_LOG_FD = 7, | |
| 56 | VHOST_USER_SET_VRING_NUM = 8, | |
| 57 | VHOST_USER_SET_VRING_ADDR = 9, | |
| 58 | VHOST_USER_SET_VRING_BASE = 10, | |
| 59 | VHOST_USER_GET_VRING_BASE = 11, | |
| 60 | VHOST_USER_SET_VRING_KICK = 12, | |
| 61 | VHOST_USER_SET_VRING_CALL = 13, | |
| 62 | VHOST_USER_SET_VRING_ERR = 14, | |
| 63 | VHOST_USER_GET_PROTOCOL_FEATURES = 15, | |
| 64 | VHOST_USER_SET_PROTOCOL_FEATURES = 16, | |
| 65 | VHOST_USER_GET_QUEUE_NUM = 17, | |
| 66 | VHOST_USER_SET_VRING_ENABLE = 18, | |
| 67 | VHOST_USER_MAX | |
| 68 | }; | |
| 69 | ||
| 70 | const char * const vhost_msg_strings[VHOST_USER_MAX]; | |
| 71 | ||
| 72 | struct vhost_memory_region { | |
| 73 | uint64_t guest_phys_addr; | |
| 74 | uint64_t memory_size; /* bytes */ | |
| 75 | uint64_t userspace_addr; | |
| 76 | uint64_t mmap_offset; | |
| 77 | }; | |
| 78 | ||
| 79 | struct virtio_user_dev; | |
| 80 | ||
| 81 | struct virtio_user_backend_ops { | |
| 82 | int (*setup)(struct virtio_user_dev *dev); | |
| 83 | int (*send_request)(struct virtio_user_dev *dev, | |
| 84 | enum vhost_user_request req, | |
| 85 | void *arg); | |
| 86 | int (*enable_qp)(struct virtio_user_dev *dev, | |
| 87 | uint16_t pair_idx, | |
| 88 | int enable); | |
| 89 | }; | |
| 90 | ||
| 9f95a23c TL |
91 | extern struct virtio_user_backend_ops virtio_ops_user; |
| 92 | extern struct virtio_user_backend_ops virtio_ops_kernel; | |
| 11fdf7f2 TL |
93 | |
| 94 | #endif |