diff options
Diffstat (limited to 'net/tap-linux.h')
| -rw-r--r-- | net/tap-linux.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/net/tap-linux.h b/net/tap-linux.h new file mode 100644 index 0000000000..d81c65081f --- /dev/null +++ b/net/tap-linux.h @@ -0,0 +1,51 @@ +/* + * 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> +#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) + +/* 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; +}; + +#endif /* QEMU_TAP_H */ |