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 41 struct virtio_user_dev { 42 int vhostfd; 43 int callfds[VIRTIO_MAX_VIRTQUEUES * 2 + 1]; 44 int kickfds[VIRTIO_MAX_VIRTQUEUES * 2 + 1]; 45 int mac_specified; 46 uint32_t max_queue_pairs; 47 uint32_t queue_pairs; 48 uint32_t queue_size; 49 uint64_t features; 50 uint8_t status; 51 uint8_t mac_addr[ETHER_ADDR_LEN]; 52 char path[PATH_MAX]; 53 struct vring vrings[VIRTIO_MAX_VIRTQUEUES * 2 + 1]; 54 }; 55 56 int virtio_user_start_device(struct virtio_user_dev *dev); 57 int virtio_user_stop_device(struct virtio_user_dev *dev); 58 int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, 59 int cq, int queue_size, const char *mac); 60 void virtio_user_dev_uninit(struct virtio_user_dev *dev); 61 void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx); 62 #endif 63