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51716196a4
Only tun0 -> tun32767 may now be opened as struct ifnet's if_unit is a short. It's now possible to open /dev/tun and get a handle back for an available tun device (use devname to find out what you got). The implementation uses rman by popular demand (and against my judgement) to track opened devices and uses the new dev_depends() to ensure that all make_dev()d devices go away before the module is unloaded. Reviewed by: phk
57 lines
2.1 KiB
C
57 lines
2.1 KiB
C
/*-
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* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NET_IF_TUNVAR_H_
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#define _NET_IF_TUNVAR_H_
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struct tun_softc {
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u_short tun_flags; /* misc flags */
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#define TUN_OPEN 0x0001
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#define TUN_INITED 0x0002
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#define TUN_RCOLL 0x0004
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#define TUN_IASET 0x0008
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#define TUN_DSTADDR 0x0010
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#define TUN_LMODE 0x0020
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#define TUN_RWAIT 0x0040
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#define TUN_ASYNC 0x0080
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#define TUN_IFHEAD 0x0100
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#define TUN_READY (TUN_OPEN | TUN_INITED)
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pid_t tun_pid; /* PID of process to open */
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struct ifnet tun_if; /* the interface */
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struct sigio *tun_sigio; /* information for async I/O */
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struct selinfo tun_rsel; /* read select */
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struct selinfo tun_wsel; /* write select (not used) */
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struct tun_softc *next; /* Next softc in list */
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struct resource *r_unit; /* resource allocated for this unit */
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};
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#endif /* !_NET_IF_TUNVAR_H_ */
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