Merge branch 'upstream-merge'
[qemu-kvm/markmc.git] / tap-linux.h
blobd81c65081fd4d1f51d00be894960aee0aa5ab4f3
1 /*
2 * Universal TUN/TAP device driver.
3 * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 #ifndef QEMU_TAP_H
17 #define QEMU_TAP_H
19 #include <stdint.h>
20 #include <linux/ioctl.h>
22 /* Ioctl defines */
23 #define TUNSETIFF _IOW('T', 202, int)
24 #define TUNGETFEATURES _IOR('T', 207, unsigned int)
25 #define TUNSETOFFLOAD _IOW('T', 208, unsigned int)
26 #define TUNGETIFF _IOR('T', 210, unsigned int)
27 #define TUNSETSNDBUF _IOW('T', 212, int)
29 /* TUNSETIFF ifr flags */
30 #define IFF_TAP 0x0002
31 #define IFF_NO_PI 0x1000
32 #define IFF_VNET_HDR 0x4000
34 /* Features for GSO (TUNSETOFFLOAD). */
35 #define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */
36 #define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */
37 #define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */
38 #define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */
39 #define TUN_F_UFO 0x10 /* I can handle UFO packets */
41 struct virtio_net_hdr
43 uint8_t flags;
44 uint8_t gso_type;
45 uint16_t hdr_len;
46 uint16_t gso_size;
47 uint16_t csum_start;
48 uint16_t csum_offset;
51 #endif /* QEMU_TAP_H */