00001 /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */ 00002 /* 00003 * Copyright (c) 1996 Regents of the University of California. 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 1. Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 2. Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * 3. All advertising materials mentioning features or use of this software 00015 * must display the following acknowledgement: 00016 * This product includes software developed by the MASH Research 00017 * Group at the University of California Berkeley. 00018 * 4. Neither the name of the University nor of the Research Group may be 00019 * used to endorse or promote products derived from this software without 00020 * specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00023 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00024 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00025 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00026 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00027 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00028 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00029 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00031 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00032 * SUCH DAMAGE. 00033 */ 00034 /* 00035 * Contributed by Rishi Bhargava <rishi_bhargava@yahoo.com> May, 2001. 00036 */ 00037 00038 00039 #ifndef _HDR_SRC_H 00040 #define _HDR_SRC_H 00041 00042 #include <assert.h> 00043 00044 #include <packet.h> 00045 00046 #define SR_HDR_SZ 4 // size of constant part of hdr 00047 00048 #define MAX_SR_LEN 16 // longest source route we can handle 00049 00050 00051 typedef struct hash_node { 00052 int route_len; 00053 int route[30]; 00054 int tag; /* this is the connection id*/ 00055 struct hash_node *next; 00056 00057 } h_node; 00058 00059 00060 struct hdr_src { 00061 int num_addrs_; 00062 int cur_addr_; 00063 int addrs[MAX_SR_LEN]; 00064 00065 int fid; // flow id of the connection 00066 00067 static int offset_; /* offset for this header */ 00068 inline int& offset() { return offset_; } 00069 00070 inline static hdr_src* access(Packet* p) { 00071 return (hdr_src*) p->access(offset_); 00072 } 00073 00074 00075 inline int& num_addrs() {return num_addrs_;} 00076 inline int& cur_addr() {return cur_addr_;} 00077 00078 00079 }; 00080 00081 #endif