sys/net/if_tapvar.h

   1 /*-
   2  * Copyright (C) 1999-2000 by Maksim Yevmenkin <m_evmenkin@yahoo.com>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * BASED ON:
  27  * -------------------------------------------------------------------------
  28  *
  29  * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
  30  * All rights reserved.
  31  *
  32  * Copyright (c) 1988, Julian Onions <jpo@cs.nott.ac.uk>
  33  * Nottingham University 1987.
  34  */
  35
  36 /*
  37  * $FreeBSD$
  38  * $Id: if_tapvar.h,v 0.6 2000/07/11 02:16:08 max Exp $
  39  */
  40
  41 #ifndef _NET_IF_TAPVAR_H_
  42 #define _NET_IF_TAPVAR_H_
  43
  44 /*
  45  * tap_mtx locks tap_flags, tap_pid.  tap_next locked with global tapmtx.
  46  * Other fields locked by owning subsystems.
  47  */
  48 struct tap_softc {
  49         struct ifnet    *tap_ifp;
  50         u_short         tap_flags;              /* misc flags                */
  51 #define TAP_OPEN        (1 << 0)
  52 #define TAP_INITED      (1 << 1)
  53 #define TAP_RWAIT       (1 << 2)
  54 #define TAP_ASYNC       (1 << 3)
  55 #define TAP_READY       (TAP_OPEN|TAP_INITED)
  56 #define TAP_VMNET       (1 << 4)
  57
  58         u_int8_t        ether_addr[ETHER_ADDR_LEN]; /* ether addr of the remote side */
  59
  60         pid_t            tap_pid;               /* PID of process to open    */
  61         struct sigio    *tap_sigio;             /* information for async I/O */
  62         struct selinfo   tap_rsel;              /* read select               */
  63
  64         SLIST_ENTRY(tap_softc)  tap_next;       /* next device in chain      */
  65         struct cdev *tap_dev;
  66         struct mtx       tap_mtx;               /* per-softc mutex */
  67 };
  68
  69 #endif /* !_NET_IF_TAPVAR_H_ */