/* Copyright (c) 1997, 1998 Carnegie Mellon University. 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. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. The WCETT code developed by the CMU/MONARCH group was optimized and tuned by Samir Das and Mahesh Marina, University of Cincinnati. The work was partially done in Sun Microsystems. */ #ifndef __wcett_packet_h__ #define __wcett_packet_h__ //#include //#include "wcett.h" #define WCETT_MAX_ERRORS 100 /* ===================================================================== Packet Formats... ===================================================================== */ #define WCETTTYPE_HELLO 0x01 #define WCETTTYPE_RREQ 0x02 #define WCETTTYPE_RREP 0x04 #define WCETTTYPE_RERR 0x08 #define WCETTTYPE_RREP_ACK 0x10 #define WCETTTYPE_HELLO_ACK 0X12 //carmen hello ack /* * WCETT Routing Protocol Header Macros */ #define HDR_WCETT(p) ((struct hdr_wcett*)hdr_wcett::access(p)) #define HDR_WCETT_REQUEST(p) ((struct hdr_wcett_request*)hdr_wcett::access(p)) #define HDR_WCETT_REPLY(p) ((struct hdr_wcett_reply*)hdr_wcett::access(p)) #define HDR_WCETT_ERROR(p) ((struct hdr_wcett_error*)hdr_wcett::access(p)) #define HDR_WCETT_RREP_ACK(p) ((struct hdr_wcett_rrep_ack*)hdr_wcett::access(p)) /* * General WCETT Header - shared by all formats */ struct hdr_wcett { u_int8_t ah_type; /* u_int8_t ah_reserved[2]; u_int8_t ah_hopcount; */ // Header access methods static int offset_; // required by PacketHeaderManager inline static int& offset() { return offset_; } inline static hdr_wcett* access(const Packet* p) { return (hdr_wcett*) p->access(offset_); } }; struct ETTInfo { int nodeid; //since each route table may need to store multi route entry for each node //this index is to record which index to use. //int routetableindex; int channel; int ETT; }; struct hdr_wcett_request { u_int8_t rq_type; // Packet Type //u_int8_t reserved[2]; //carmen u_int8_t reserved[1]; //carmen u_int8_t routeindex; //u_int8_t channelnum; //record current link used which channel //u_int8_t rq_ett; // Hop Count//ETT for each link carmen u_int8_t rq_hop_count; // Hop Count u_int32_t rq_bcast_id; // Broadcast ID nsaddr_t rq_dst; // Destination IP Address u_int32_t rq_dst_seqno; // Destination Sequence Number nsaddr_t rq_src; // Source IP Address u_int32_t rq_src_seqno; // Source Sequence Number double rq_timestamp; // when REQUEST sent; // used to compute route discovery latency ETTInfo RouteRecord[20]; // This define turns on gratuitous replies- see wcett.cc for implementation contributed by // Anant Utgikar, 09/16/02. //#define RREQ_GRAT_RREP 0x80 inline int size() { int sz = 0; /* sz = sizeof(u_int8_t) // rq_type + 2*sizeof(u_int8_t) // reserved + sizeof(u_int8_t) // rq_hop_count + sizeof(double) // rq_timestamp + sizeof(u_int32_t) // rq_bcast_id + sizeof(nsaddr_t) // rq_dst + sizeof(u_int32_t) // rq_dst_seqno + sizeof(nsaddr_t) // rq_src + sizeof(u_int32_t); // rq_src_seqno */ sz = 7*sizeof(u_int32_t); sz=20*sizeof(ETTInfo)+sz; assert (sz >= 0); return sz; } }; struct hdr_wcett_reply { u_int8_t rp_type; // Packet Type // u_int8_t reserved[2]; //carmen //u_int8_t reserved[1]; u_int8_t channelnum; //record current link used which channel u_int8_t rq_ett; // Hop Count//ETT for each link carmen u_int8_t rp_hop_count; // Hop Count nsaddr_t rp_dst; // Destination IP Address u_int32_t rp_dst_seqno; // Destination Sequence Number nsaddr_t rp_src; // Source IP Address double rp_lifetime; // Lifetime double rp_timestamp; // when corresponding REQ sent; // used to compute route discovery latency ETTInfo RouteRecord[20]; inline int size() { int sz = 0; /* sz = sizeof(u_int8_t) // rp_type + 2*sizeof(u_int8_t) // rp_flags + reserved + sizeof(u_int8_t) // rp_hop_count + sizeof(double) // rp_timestamp + sizeof(nsaddr_t) // rp_dst + sizeof(u_int32_t) // rp_dst_seqno + sizeof(nsaddr_t) // rp_src + sizeof(u_int32_t); // rp_lifetime */ sz = 6*sizeof(u_int32_t); sz=20*sizeof(ETTInfo)+sz; assert (sz >= 0); return sz; } }; struct hdr_wcett_error { u_int8_t re_type; // Type u_int8_t reserved[2]; // Reserved u_int8_t DestCount; // DestCount // List of Unreachable destination IP addresses and sequence numbers nsaddr_t unreachable_dst[WCETT_MAX_ERRORS]; u_int32_t unreachable_dst_seqno[WCETT_MAX_ERRORS]; inline int size() { int sz = 0; /* sz = sizeof(u_int8_t) // type + 2*sizeof(u_int8_t) // reserved + sizeof(u_int8_t) // length + length*sizeof(nsaddr_t); // unreachable destinations */ sz = (DestCount*2 + 1)*sizeof(u_int32_t); assert(sz); return sz; } }; struct hdr_wcett_rrep_ack { u_int8_t rpack_type; u_int8_t reserved; double RxPr; inline int size() { int sz = 0; /* sz = sizeof(u_int8_t) // type + 2*sizeof(u_int8_t) // reserved + sizeof(u_int8_t) // length + length*sizeof(nsaddr_t); // unreachable destinations */ sz = 2*sizeof(u_int8_t)+ sizeof(float); assert(sz); return sz; } }; /* //carmen ack for hello struct hdr_wcett_hello_ack { u_int8_t rpack_type; u_int8_t reserved; float RxPr; }; */ // for size calculation of header-space reservation union hdr_all_wcett { hdr_wcett ah; hdr_wcett_request rreq; hdr_wcett_reply rrep; hdr_wcett_error rerr; hdr_wcett_rrep_ack rrep_ack; }; #endif /* __wcett_packet_h__ */