/* * Universal TUN/TAP device driver. * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef QEMU_TAP_H #define QEMU_TAP_H #include <stdint.h> #ifdef __linux__ #include <linux/ioctl.h> /* Ioctl defines */ #define TUNSETIFF _IOW('T', 202, int) #define TUNGETFEATURES _IOR('T', 207, unsigned int) #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) #define TUNGETIFF _IOR('T', 210, unsigned int) #define TUNSETSNDBUF _IOW('T', 212, int) #define TUNGETVNETHDRSZ _IOR('T', 215, int) #define TUNSETVNETHDRSZ _IOW('T', 216, int) #endif /* TUNSETIFF ifr flags */ #define IFF_TAP 0x0002 #define IFF_NO_PI 0x1000 #define IFF_VNET_HDR 0x4000 /* Features for GSO (TUNSETOFFLOAD). */ #define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */ #define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */ #define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */ #define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */ #define TUN_F_UFO 0x10 /* I can handle UFO packets */ struct virtio_net_hdr { uint8_t flags; uint8_t gso_type; uint16_t hdr_len; uint16_t gso_size; uint16_t csum_start; uint16_t csum_offset; }; struct virtio_net_hdr_mrg_rxbuf { struct virtio_net_hdr hdr; uint16_t num_buffers; /* Number of merged rx buffers */ }; #endif /* QEMU_TAP_H */