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