1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2016 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _VIRTIO_USER_DEV_H 35 #define _VIRTIO_USER_DEV_H 36 37 #include <limits.h> 38 #include "../virtio_pci.h" 39 #include "../virtio_ring.h" 40 #include "vhost.h" 41 42 struct virtio_user_dev { 43 /* for vhost_user backend */ 44 int vhostfd; 45 46 /* for vhost_kernel backend */ 47 char *ifname; 48 int *vhostfds; 49 int *tapfds; 50 51 /* for both vhost_user and vhost_kernel */ 52 int callfds[VIRTIO_MAX_VIRTQUEUES]; 53 int kickfds[VIRTIO_MAX_VIRTQUEUES]; 54 int mac_specified; 55 uint32_t max_queue_pairs; 56 uint32_t queue_pairs; 57 uint32_t queue_size; 58 uint64_t features; /* the negotiated features with driver, 59 * and will be sync with device 60 */ 61 uint64_t device_features; /* supported features by device */ 62 uint8_t status; 63 uint8_t port_id; 64 uint8_t mac_addr[ETHER_ADDR_LEN]; 65 char path[PATH_MAX]; 66 struct vring vrings[VIRTIO_MAX_VIRTQUEUES]; 67 struct virtio_user_backend_ops *ops; 68 }; 69 70 int is_vhost_user_by_type(const char *path); 71 int virtio_user_start_device(struct virtio_user_dev *dev); 72 int virtio_user_stop_device(struct virtio_user_dev *dev); 73 int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, 74 int cq, int queue_size, const char *mac, char **ifname); 75 void virtio_user_dev_uninit(struct virtio_user_dev *dev); 76 void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx); 77 #endif 78