Archipelago » qemu

/*

 *  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 */