1 /* $NetBSD: if_tun.h,v 1.20 2017/01/26 21:13:19 skrll 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 kcondvar_t tun_cv; /* condition variable for tunnel */ 48 LIST_ENTRY(tun_softc) tun_list; /* list of all tuns */ 49 void *tun_osih; /* soft interrupt handle */ 50 void *tun_isih; /* soft interrupt handle */ 51 }; 52 #endif /* _KERNEL */ 53 54 /* Maximum packet size */ 55 #define TUNMTU 1500 56 57 /* ioctl's for get/set debug */ 58 #define TUNSDEBUG _IOW('t', 90, int) 59 #define TUNGDEBUG _IOR('t', 89, int) 60 #define TUNSIFMODE _IOW('t', 88, int) 61 #define TUNSLMODE _IOW('t', 87, int) 62 #define TUNSIFHEAD _IOW('t', 66, int) 63 #define TUNGIFHEAD _IOR('t', 65, int) 64 65 #endif /* !_NET_IF_TUN_H_ */ 66