| 1 | /* $NetBSD: if_tun.h,v 1.5 1994/06/29 06:36:27 cgd 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 it's |
| 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 | |
| 17 | #ifndef _NET_IF_TUN_H_ |
| 18 | #define _NET_IF_TUN_H_ |
| 19 | |
| 20 | /* Refer to if_tunvar.h for the softc stuff */ |
| 21 | |
| 22 | /* Maximum transmit packet size (default) */ |
| 23 | #define TUNMTU 1500 |
| 24 | |
| 25 | /* Maximum receive packet size (hard limit) */ |
| 26 | #define TUNMRU 65535 |
| 27 | |
| 28 | struct tuninfo { |
| 29 | int baudrate; /* linespeed */ |
| 30 | unsigned short mtu; /* maximum transmission unit */ |
| 31 | u_char type; /* ethernet, tokenring, etc. */ |
| 32 | u_char dummy; /* place holder */ |
| 33 | }; |
| 34 | |
| 35 | /* ioctl's for get/set debug */ |
| 36 | #define TUNSDEBUG _IOW('t', 90, int) |
| 37 | #define TUNGDEBUG _IOR('t', 89, int) |
| 38 | #define TUNSIFINFO _IOW('t', 91, struct tuninfo) |
| 39 | #define TUNGIFINFO _IOR('t', 92, struct tuninfo) |
| 40 | #define TUNSLMODE _IOW('t', 93, int) |
| 41 | #define TUNGIFNAME _IOR('t', 93, struct ifreq) |
| 42 | #define TUNSIFMODE _IOW('t', 94, int) |
| 43 | #define TUNSIFPID _IO('t', 95) |
| 44 | #define TUNSIFHEAD _IOW('t', 96, int) |
| 45 | #define TUNGIFHEAD _IOR('t', 97, int) |
| 46 | #define TUNSTRANSIENT _IOW('t', 98, int) |
| 47 | #define TUNGTRANSIENT _IOR('t', 99, int) |
| 48 | |
| 49 | #endif /* !_NET_IF_TUN_H_ */ |