1 /* 2 * Universal TUN/TAP device driver. 3 * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk (at) yahoo.com> 4 * 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. 9 * 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. 14 */ 15 16 #ifndef _UAPI__IF_TUN_H 17 #define _UAPI__IF_TUN_H 18 19 #include <linux/types.h> 20 #include <linux/if_ether.h> 21 #include <linux/filter.h> 22 23 /* Read queue size */ 24 #define TUN_READQ_SIZE 500 25 /* TUN device type flags: deprecated. Use IFF_TUN/IFF_TAP instead. */ 26 #define TUN_TUN_DEV IFF_TUN 27 #define TUN_TAP_DEV IFF_TAP 28 #define TUN_TYPE_MASK 0x000f 29 30 /* Ioctl defines */ 31 #define TUNSETNOCSUM _IOW('T', 200, int) 32 #define TUNSETDEBUG _IOW('T', 201, int) 33 #define TUNSETIFF _IOW('T', 202, int) 34 #define TUNSETPERSIST _IOW('T', 203, int) 35 #define TUNSETOWNER _IOW('T', 204, int) 36 #define TUNSETLINK _IOW('T', 205, int) 37 #define TUNSETGROUP _IOW('T', 206, int) 38 #define TUNGETFEATURES _IOR('T', 207, unsigned int) 39 #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) 40 #define TUNSETTXFILTER _IOW('T', 209, unsigned int) 41 #define TUNGETIFF _IOR('T', 210, unsigned int) 42 #define TUNGETSNDBUF _IOR('T', 211, int) 43 #define TUNSETSNDBUF _IOW('T', 212, int) 44 #define TUNATTACHFILTER _IOW('T', 213, struct sock_fprog) 45 #define TUNDETACHFILTER _IOW('T', 214, struct sock_fprog) 46 #define TUNGETVNETHDRSZ _IOR('T', 215, int) 47 #define TUNSETVNETHDRSZ _IOW('T', 216, int) 48 #define TUNSETQUEUE _IOW('T', 217, int) 49 #define TUNSETIFINDEX _IOW('T', 218, unsigned int) 50 #define TUNGETFILTER _IOR('T', 219, struct sock_fprog) 51 #define TUNSETVNETLE _IOW('T', 220, int) 52 #define TUNGETVNETLE _IOR('T', 221, int) 53 /* The TUNSETVNETBE and TUNGETVNETBE ioctls are for cross-endian support on 54 * little-endian hosts. Not all kernel configurations support them, but all 55 * configurations that support SET also support GET. 56 */ 57 #define TUNSETVNETBE _IOW('T', 222, int) 58 #define TUNGETVNETBE _IOR('T', 223, int) 59 60 /* TUNSETIFF ifr flags */ 61 #define IFF_TUN 0x0001 62 #define IFF_TAP 0x0002 63 #define IFF_NO_PI 0x1000 64 /* This flag has no real effect */ 65 #define IFF_ONE_QUEUE 0x2000 66 #define IFF_VNET_HDR 0x4000 67 #define IFF_TUN_EXCL 0x8000 68 #define IFF_MULTI_QUEUE 0x0100 69 #define IFF_ATTACH_QUEUE 0x0200 70 #define IFF_DETACH_QUEUE 0x0400 71 /* read-only flag */ 72 #define IFF_PERSIST 0x0800 73 #define IFF_NOFILTER 0x1000 74 75 /* Socket options */ 76 #define TUN_TX_TIMESTAMP 1 77 78 /* Features for GSO (TUNSETOFFLOAD). */ 79 #define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */ 80 #define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */ 81 #define TUN_F_TSO6 0x04 /* I can handle TSO for IPv6 packets */ 82 #define TUN_F_TSO_ECN 0x08 /* I can handle TSO with ECN bits. */ 83 #define TUN_F_UFO 0x10 /* I can handle UFO packets */ 84 85 /* Protocol info prepended to the packets (when IFF_NO_PI is not set) */ 86 #define TUN_PKT_STRIP 0x0001 87 struct tun_pi { 88 __u16 flags; 89 __be16 proto; 90 }; 91 92 /* 93 * Filter spec (used for SETXXFILTER ioctls) 94 * This stuff is applicable only to the TAP (Ethernet) devices. 95 * If the count is zero the filter is disabled and the driver accepts 96 * all packets (promisc mode). 97 * If the filter is enabled in order to accept broadcast packets 98 * broadcast addr must be explicitly included in the addr list. 99 */ 100 #define TUN_FLT_ALLMULTI 0x0001 /* Accept all multicast packets */ 101 struct tun_filter { 102 __u16 flags; /* TUN_FLT_ flags see above */ 103 __u16 count; /* Number of addresses */ 104 __u8 addr[0][ETH_ALEN]; 105 }; 106 107 #endif /* _UAPI__IF_TUN_H */ 108
