00001 /* 00002 * Copyright (c) 1997, 1998 The Regents of the University of California. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. All advertising materials mentioning features or use of this software 00014 * must display the following acknowledgement: 00015 * This product includes software developed by the MASH Research 00016 * Group at the University of California, Berkeley. 00017 * 4. Neither the name of the University nor of the Research Group may be used 00018 * to endorse or promote products derived from this software without 00019 * specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00022 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00023 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00024 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00025 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00026 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00027 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00028 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00029 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00030 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00031 * SUCH DAMAGE. 00032 * 00033 * @(#) $Header: /cvsroot/nsnam/ns-2/emulate/iptap.h,v 1.5 2003/02/15 00:46:49 buchheim Exp $ (ISI) 00034 */ 00035 00036 #ifndef iptap_h 00037 #define iptap_h 00038 00039 #include "tap.h" 00040 00041 #include <netinet/in.h> 00042 #include <netinet/in_systm.h> 00043 #include <netinet/ip.h> 00044 #include <netinet/tcp.h> 00045 #include <sys/socket.h> 00046 #include "tcp.h" 00047 #include "ip.h" 00048 00049 #define MAX_PACKETS 640 00050 00051 00052 class IPTapAgent : public TapAgent { 00053 00054 public: 00055 IPTapAgent(); 00056 00057 private: 00058 int ident[MAX_PACKETS]; /* All three used for duplicate */ 00059 int offset[MAX_PACKETS]; /* packet detection. */ 00060 int index; 00061 00062 unsigned short in_cksum(unsigned short *,int); 00063 void recvpkt(); 00064 int sendpkt(Packet*); 00065 int isDuplicate(unsigned short, unsigned short); 00066 void processpkt(Packet *, const struct timeval &); 00067 static void pkt_handler(void *, Packet *, const struct timeval &); 00068 00069 }; 00070 00071 #endif /* iptap_h */ 00072 00073 00074 00075 00076 00077 00078 00079
1.7.1