| /* |
| * 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 __IF_TUN_H |
| #define __IF_TUN_H |
| |
| #include <linux/types.h> |
| #include <linux/if_ether.h> |
| #include <linux/filter.h> |
| |
| /* Read queue size */ |
| #define TUN_READQ_SIZE 500 |
| |
| /* TUN device flags */ |
| #define TUN_TUN_DEV 0x0001 |
| #define TUN_TAP_DEV 0x0002 |
| #define TUN_TYPE_MASK 0x000f |
| |
| #define TUN_FASYNC 0x0010 |
| #define TUN_NOCHECKSUM 0x0020 |
| #define TUN_NO_PI 0x0040 |
| #define TUN_ONE_QUEUE 0x0080 |
| #define TUN_PERSIST 0x0100 |
| #define TUN_VNET_HDR 0x0200 |
| |
| /* Ioctl defines */ |
| #define TUNSETNOCSUM _IOW('T', 200, int) |
| #define TUNSETDEBUG _IOW('T', 201, int) |
| #define TUNSETIFF _IOW('T', 202, int) |
| #define TUNSETPERSIST _IOW('T', 203, int) |
| #define TUNSETOWNER _IOW('T', 204, int) |
| #define TUNSETLINK _IOW('T', 205, int) |
| #define TUNSETGROUP _IOW('T', 206, int) |
| #define TUNGETFEATURES _IOR('T', 207, unsigned int) |
| #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) |
| #define TUNSETTXFILTER _IOW('T', 209, unsigned int) |
| #define TUNGETIFF _IOR('T', 210, unsigned int) |
| #define TUNGETSNDBUF _IOR('T', 211, int) |
| #define TUNSETSNDBUF _IOW('T', 212, int) |
| #define TUNATTACHFILTER _IOW('T', 213, struct sock_fprog) |
| #define TUNDETACHFILTER _IOW('T', 214, struct sock_fprog) |
| #define TUNGETVNETHDRSZ _IOR('T', 215, int) |
| #define TUNSETVNETHDRSZ _IOW('T', 216, int) |
| |
| /* TUNSETIFF ifr flags */ |
| #define IFF_TUN 0x0001 |
| #define IFF_TAP 0x0002 |
| #define IFF_NO_PI 0x1000 |
| #define IFF_ONE_QUEUE 0x2000 |
| #define IFF_VNET_HDR 0x4000 |
| #define IFF_TUN_EXCL 0x8000 |
| |
| /* 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 */ |
| |
| /* Protocol info prepended to the packets (when IFF_NO_PI is not set) */ |
| #define TUN_PKT_STRIP 0x0001 |
| struct tun_pi { |
| __u16 flags; |
| __be16 proto; |
| }; |
| |
| /* |
| * Filter spec (used for SETXXFILTER ioctls) |
| * This stuff is applicable only to the TAP (Ethernet) devices. |
| * If the count is zero the filter is disabled and the driver accepts |
| * all packets (promisc mode). |
| * If the filter is enabled in order to accept broadcast packets |
| * broadcast addr must be explicitly included in the addr list. |
| */ |
| #define TUN_FLT_ALLMULTI 0x0001 /* Accept all multicast packets */ |
| struct tun_filter { |
| __u16 flags; /* TUN_FLT_ flags see above */ |
| __u16 count; /* Number of addresses */ |
| __u8 addr[0][ETH_ALEN]; |
| }; |
| |
| #endif /* __IF_TUN_H */ |
