1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2016 Intel Corporation 3 */ 4 5 #ifndef _VIRTIO_USER_DEV_H 6 #define _VIRTIO_USER_DEV_H 7 8 #include <limits.h> 9 #include <stdbool.h> 10 #include "../virtio_pci.h" 11 #include "../virtio_ring.h" 12 #include "vhost.h" 13 14 struct virtio_user_queue { 15 uint16_t used_idx; 16 bool avail_wrap_counter; 17 bool used_wrap_counter; 18 }; 19 20 struct virtio_user_dev { 21 /* for vhost_user backend */ 22 int vhostfd; 23 int listenfd; /* listening fd */ 24 bool is_server; /* server or client mode */ 25 26 /* for vhost_kernel backend */ 27 char *ifname; 28 int *vhostfds; 29 int *tapfds; 30 31 /* for both vhost_user and vhost_kernel */ 32 int callfds[VIRTIO_MAX_VIRTQUEUES]; 33 int kickfds[VIRTIO_MAX_VIRTQUEUES]; 34 int mac_specified; 35 uint32_t max_queue_pairs; 36 uint32_t queue_pairs; 37 uint32_t queue_size; 38 uint64_t features; /* the negotiated features with driver, 39 * and will be sync with device 40 */ 41 uint64_t device_features; /* supported features by device */ 42 uint64_t frontend_features; /* enabled frontend features */ 43 uint64_t unsupported_features; /* unsupported features mask */ 44 uint8_t status; 45 uint16_t port_id; 46 uint8_t mac_addr[ETHER_ADDR_LEN]; 47 char path[PATH_MAX]; 48 union { 49 struct vring vrings[VIRTIO_MAX_VIRTQUEUES]; 50 struct vring_packed packed_vrings[VIRTIO_MAX_VIRTQUEUES]; 51 }; 52 struct virtio_user_queue packed_queues[VIRTIO_MAX_VIRTQUEUES]; 53 54 struct virtio_user_backend_ops *ops; 55 pthread_mutex_t mutex; 56 bool started; 57 }; 58 59 int is_vhost_user_by_type(const char *path); 60 int virtio_user_start_device(struct virtio_user_dev *dev); 61 int virtio_user_stop_device(struct virtio_user_dev *dev); 62 int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, 63 int cq, int queue_size, const char *mac, char **ifname, 64 int server, int mrg_rxbuf, int in_order, 65 int packed_vq); 66 void virtio_user_dev_uninit(struct virtio_user_dev *dev); 67 void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx); 68 void virtio_user_handle_cq_packed(struct virtio_user_dev *dev, 69 uint16_t queue_idx); 70 uint8_t virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs); 71 #endif 72