| 1 | /* $NetBSD: if_tun.h,v 1.19 2015/09/06 06:01:01 dholland Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk> |
| 5 | * Nottingham University 1987. |
| 6 | * |
| 7 | * This source may be freely distributed, however I would be interested |
| 8 | * in any changes that are made. |
| 9 | * |
| 10 | * This driver takes packets off the IP i/f and hands them up to a |
| 11 | * user process to have its wicked way with. This driver has its |
| 12 | * roots in a similar driver written by Phil Cockcroft (formerly) at |
| 13 | * UCL. This driver is based much more on read/write/select mode of |
| 14 | * operation though. |
| 15 | * |
| 16 | * from: Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp |
| 17 | */ |
| 18 | |
| 19 | #ifndef _NET_IF_TUN_H_ |
| 20 | #define _NET_IF_TUN_H_ |
| 21 | |
| 22 | #include <sys/ioccom.h> |
| 23 | |
| 24 | #ifdef _KERNEL |
| 25 | struct tun_softc { |
| 26 | struct ifnet tun_if; /* the interface */ |
| 27 | |
| 28 | u_short tun_flags; /* misc flags */ |
| 29 | #define TUN_OPEN 0x0001 |
| 30 | #define TUN_INITED 0x0002 |
| 31 | #define TUN_RCOLL 0x0004 |
| 32 | #define TUN_IASET 0x0008 |
| 33 | #define TUN_DSTADDR 0x0010 |
| 34 | #define TUN_RWAIT 0x0040 |
| 35 | #define TUN_ASYNC 0x0080 |
| 36 | #define TUN_NBIO 0x0100 |
| 37 | #define TUN_PREPADDR 0x0200 |
| 38 | #define TUN_IFHEAD 0x0400 |
| 39 | |
| 40 | #define TUN_READY (TUN_OPEN | TUN_INITED | TUN_IASET) |
| 41 | |
| 42 | pid_t tun_pgid; /* PID or process group ID */ |
| 43 | struct selinfo tun_rsel; /* read select */ |
| 44 | struct selinfo tun_wsel; /* write select (not used) */ |
| 45 | int tun_unit; /* the tunnel unit number */ |
| 46 | kmutex_t tun_lock; /* lock for this tunnel */ |
| 47 | LIST_ENTRY(tun_softc) tun_list; /* list of all tuns */ |
| 48 | void *tun_osih; /* soft interrupt handle */ |
| 49 | void *tun_isih; /* soft interrupt handle */ |
| 50 | }; |
| 51 | #endif /* _KERNEL */ |
| 52 | |
| 53 | /* Maximum packet size */ |
| 54 | #define TUNMTU 1500 |
| 55 | |
| 56 | /* ioctl's for get/set debug */ |
| 57 | #define TUNSDEBUG _IOW('t', 90, int) |
| 58 | #define TUNGDEBUG _IOR('t', 89, int) |
| 59 | #define TUNSIFMODE _IOW('t', 88, int) |
| 60 | #define TUNSLMODE _IOW('t', 87, int) |
| 61 | #define TUNSIFHEAD _IOW('t', 66, int) |
| 62 | #define TUNGIFHEAD _IOR('t', 65, int) |
| 63 | |
| 64 | #endif /* !_NET_IF_TUN_H_ */ |
| 65 | |