diff options
Diffstat (limited to 'include/linux/if_tun.h')
| -rw-r--r-- | include/linux/if_tun.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h new file mode 100644 index 00000000000..096a85a58ae --- /dev/null +++ b/include/linux/if_tun.h @@ -0,0 +1,93 @@ +/* + * Universal TUN/TAP device driver. + * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * $Id: if_tun.h,v 1.2 2001/06/01 18:39:47 davem Exp $ + */ + +#ifndef __IF_TUN_H +#define __IF_TUN_H + +/* Uncomment to enable debugging */ +/* #define TUN_DEBUG 1 */ + +#ifdef __KERNEL__ + +#ifdef TUN_DEBUG +#define DBG if(tun->debug)printk +#define DBG1 if(debug==2)printk +#else +#define DBG( a... ) +#define DBG1( a... ) +#endif + +struct tun_struct { + struct list_head list; + unsigned long flags; + int attached; + uid_t owner; + + wait_queue_head_t read_wait; + struct sk_buff_head readq; + + struct net_device *dev; + struct net_device_stats stats; + + struct fasync_struct *fasync; + + unsigned long if_flags; + u8 dev_addr[ETH_ALEN]; + u32 chr_filter[2]; + u32 net_filter[2]; + +#ifdef TUN_DEBUG + int debug; +#endif +}; + +#endif /* __KERNEL__ */ + +/* Read queue size */ +#define TUN_READQ_SIZE 500 + +/* TUN device flags */ +#define TUN_TUN_DEV 0x0001 +#define TUN_TAP_DEV 0x0002 +#define TUN_TYPE_MASK 0x000f + +#define TUN_FASYNC 0x0010 +#define TUN_NOCHECKSUM 0x0020 +#define TUN_NO_PI 0x0040 +#define TUN_ONE_QUEUE 0x0080 +#define TUN_PERSIST 0x0100 + +/* Ioctl defines */ +#define TUNSETNOCSUM _IOW('T', 200, int) +#define TUNSETDEBUG _IOW('T', 201, int) +#define TUNSETIFF _IOW('T', 202, int) +#define TUNSETPERSIST _IOW('T', 203, int) +#define TUNSETOWNER _IOW('T', 204, int) + +/* TUNSETIFF ifr flags */ +#define IFF_TUN 0x0001 +#define IFF_TAP 0x0002 +#define IFF_NO_PI 0x1000 +#define IFF_ONE_QUEUE 0x2000 + +struct tun_pi { + unsigned short flags; + unsigned short proto; +}; +#define TUN_PKT_STRIP 0x0001 + +#endif /* __IF_TUN_H */ |