/* $NetBSD: if_tun.h,v 1.22 2022/03/13 21:32:43 riastradh Exp $ */ /* * Copyright (c) 1988, Julian Onions * Nottingham University 1987. * * This source may be freely distributed, however I would be interested * in any changes that are made. * * This driver takes packets off the IP i/f and hands them up to a * user process to have its wicked way with. This driver has its * roots in a similar driver written by Phil Cockcroft (formerly) at * UCL. This driver is based much more on read/write/select mode of * operation though. * * from: Header: if_tnreg.h,v 1.1.2.1 1992/07/16 22:39:16 friedl Exp */ #ifndef _NET_IF_TUN_H_ #define _NET_IF_TUN_H_ #include #ifdef _KERNEL #include #include #include #include #include #include struct tun_softc { struct ifnet tun_if; /* the interface */ u_short tun_flags; /* misc flags */ #define TUN_OPEN 0x0001 #define TUN_INITED 0x0002 #define TUN_RCOLL 0x0004 #define TUN_IASET 0x0008 #define TUN_DSTADDR 0x0010 #define TUN_UNUSED0 0x0040 /* was TUN_RWAIT */ #define TUN_ASYNC 0x0080 #define TUN_NBIO 0x0100 #define TUN_PREPADDR 0x0200 #define TUN_IFHEAD 0x0400 #define TUN_READY (TUN_OPEN | TUN_INITED | TUN_IASET) pid_t tun_pgid; /* PID or process group ID */ struct selinfo tun_rsel; /* read select */ struct selinfo tun_wsel; /* write select (not used) */ int tun_unit; /* the tunnel unit number */ kmutex_t tun_lock; /* lock for this tunnel */ kcondvar_t tun_cv; /* condition variable for tunnel */ LIST_ENTRY(tun_softc) tun_list; /* list of all tuns */ void *tun_osih; /* soft interrupt handle */ void *tun_isih; /* soft interrupt handle */ }; #endif /* _KERNEL */ /* Maximum packet size */ #define TUNMTU 1500 /* ioctl's for get/set debug */ #define TUNSDEBUG _IOW('t', 90, int) #define TUNGDEBUG _IOR('t', 89, int) #define TUNSIFMODE _IOW('t', 88, int) #define TUNSLMODE _IOW('t', 87, int) #define TUNSIFHEAD _IOW('t', 66, int) #define TUNGIFHEAD _IOR('t', 65, int) #endif /* !_NET_IF_TUN_H_ */