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 11 #include "../virtio.h" 12 #include "../virtio_ring.h" 13 14 enum virtio_user_backend_type { 15 VIRTIO_USER_BACKEND_UNKNOWN, 16 VIRTIO_USER_BACKEND_VHOST_USER, 17 VIRTIO_USER_BACKEND_VHOST_KERNEL, 18 VIRTIO_USER_BACKEND_VHOST_VDPA, 19 }; 20 21 struct virtio_user_queue { 22 uint16_t used_idx; 23 bool avail_wrap_counter; 24 bool used_wrap_counter; 25 }; 26 27 struct virtio_user_dev { 28 struct virtio_hw hw; 29 enum virtio_user_backend_type backend_type; 30 bool is_server; /* server or client mode */ 31 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 net_status; 46 uint8_t mac_addr[RTE_ETHER_ADDR_LEN]; 47 char path[PATH_MAX]; 48 char *ifname; 49 50 union { 51 struct vring vrings[VIRTIO_MAX_VIRTQUEUES]; 52 struct vring_packed packed_vrings[VIRTIO_MAX_VIRTQUEUES]; 53 }; 54 struct virtio_user_queue packed_queues[VIRTIO_MAX_VIRTQUEUES]; 55 bool qp_enabled[VIRTIO_MAX_VIRTQUEUE_PAIRS]; 56 57 struct virtio_user_backend_ops *ops; 58 pthread_mutex_t mutex; 59 bool started; 60 61 void *backend_data; 62 }; 63 64 int virtio_user_dev_set_features(struct virtio_user_dev *dev); 65 int virtio_user_start_device(struct virtio_user_dev *dev); 66 int virtio_user_stop_device(struct virtio_user_dev *dev); 67 int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, 68 int cq, int queue_size, const char *mac, char **ifname, 69 int server, int mrg_rxbuf, int in_order, 70 int packed_vq, 71 enum virtio_user_backend_type backend_type); 72 void virtio_user_dev_uninit(struct virtio_user_dev *dev); 73 void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx); 74 void virtio_user_handle_cq_packed(struct virtio_user_dev *dev, 75 uint16_t queue_idx); 76 uint8_t virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs); 77 int virtio_user_dev_set_status(struct virtio_user_dev *dev, uint8_t status); 78 int virtio_user_dev_update_status(struct virtio_user_dev *dev); 79 int virtio_user_dev_update_link_state(struct virtio_user_dev *dev); 80 void virtio_user_dev_delayed_handler(void *param); 81 int virtio_user_dev_server_reconnect(struct virtio_user_dev *dev); 82 extern const char * const virtio_user_backend_strings[]; 83 #endif 84