#ifndef _NET_NETBUF_H_ #define _NET_NETBUF_H_ /* * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * For additional information see http://www.ethernut.de/ * * - * Portions Copyright (C) 2000 David J. Hudson * * This file 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. * * You can redistribute this file and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software Foundation; * either version 2 of the License, or (at your discretion) any later version. * See the accompanying file "copying-gpl.txt" for more details. * * As a special exception to the GPL, permission is granted for additional * uses of the text contained in this file. See the accompanying file * "copying-liquorice.txt" for details. * - * Portions Copyright (c) 1983, 1993 by * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * $Log: netbuf.h,v $ * Revision 1.1.1.1 2003/05/09 14:41:07 haraldkipp * Initial using 3.2.1 * * Revision 1.7 2003/05/06 18:43:03 harald * Cleanup * * Revision 1.6 2003/02/04 18:00:37 harald * Version 3 released * * Revision 1.5 2002/06/26 17:29:15 harald * First pre-release with 2.4 stack * */ #include /*! * \file dev/netbuf.h * \brief Network buffer definitions. */ /*! * \addtogroup xgnetbuf */ /*@{*/ /* lower bits may be used as ref-count, if ever needed */ #define NBAF_DATALINK 0x10 /*!< \brief Datalink buffer allocated flag. */ #define NBAF_NETWORK 0x20 /*!< \brief Network buffer allocated flag. */ #define NBAF_TRANSPORT 0x40 /*!< \brief Transport buffer allocated flag. */ #define NBAF_APPLICATION 0x80 /*!< \brief Application buffer allocated flag. */ #define NBAF_ALL 0xf0 /*!< \brief Masks allocated buffer flags flag. */ /*! * \brief Network buffer type. */ typedef struct _NETBUF NETBUF; /*! * \brief Network buffer data type. */ typedef struct _NBDATA NBDATA; /*! * \struct _NBDATA netbuf.h dev/netbuf.h * \brief Data part of a network buffer structure. */ struct _NBDATA { void *vp; /*!< \brief Pointer to data buffer. */ u_short sz; /*!< \brief Size of data buffer. */ }; /*! * \struct _NETBUF netbuf.h dev/netbuf.h * \brief Network buffer structure. */ struct _NETBUF { NETBUF *nb_next; /*!< \brief Link to next structure. */ u_char nb_flags; /*!< \brief NBAF_ flags. */ NBDATA nb_dl; /*!< \brief Datalink buffer. */ NBDATA nb_nw; /*!< \brief Network buffer. */ NBDATA nb_tp; /*!< \brief Transport buffer. */ NBDATA nb_ap; /*!< \brief Application buffer. */ }; /*@}*/ __BEGIN_DECLS extern NETBUF *NutNetBufAlloc(NETBUF *nb, u_char type, u_short size); extern NETBUF *NutNetBufClone(NETBUF *nb); extern int NutNetBufFree(NETBUF *nb); __END_DECLS #endif