libdnet when we can instead of our own home grown stuff. SConscript: separate the crc code into its own file base/inet.cc: move the crc stuff to crc.cc add generic code for calculating ip/tcp/udp checksums base/inet.hh: - move crc stuff to crc.hh - #include all of the libdnet stuff. (this makes base/inet.hh the only file you need to include if you want to use this kind of stuff.) - Wrap some of the libdnet structs to get easier access to structure members. These wrappers will automatically deal with masking/shifting/ byte-swapping. base/refcnt.hh: If one derives from RefCountingPtr, they should have access to the internal data pointer. build/SConstruct: make #include of dnet stuff work dev/etherlink.cc: dev/ethertap.cc: dev/ethertap.hh: EtherPacket -> PacketData dev/etherpkt.cc: EtherPacket -> PacketData add a function for populating extra info about a packet. Basically just gives pointers to ethernet/ip/tcp/udp headers if they exist. dev/etherpkt.hh: EtherPacket -> PacketData remove most of the packet header stuff from teh PacketData class and just add a few generic functions for grabbing various headers that may exist in the packet. The old functionality is contained in the headers. dev/ns_gige.cc: - IP -> Ip, UDP -> Udp, TCP ->Tcp when used in variable names - get rid of our own byte swapping functions. - whack checksum code and use libdnet version. - Get pointers to the various packet headers and grab info from those headers. (The byte swapping in the headers now.) - Add stats for Udp Checksums dev/ns_gige.hh: use libdnet for checksum code. IP -> Ip, TCP -> Tcp in variable names add stats for UDP checksums --HG-- extra : convert_revision : 96c4160e1967b7c0090acd456df4a76e1f3aab53
122 lines
4.4 KiB
C++
122 lines
4.4 KiB
C++
/*
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* Copyright (c) 2002-2003 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __BASE_INET_HH__
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#define __BASE_INET_HH__
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#include <string>
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#include "dnet/os.h"
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#include "dnet/eth.h"
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#include "dnet/ip.h"
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#include "dnet/ip6.h"
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#include "dnet/addr.h"
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#include "dnet/arp.h"
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#include "dnet/icmp.h"
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#include "dnet/tcp.h"
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#include "dnet/udp.h"
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#include "dnet/intf.h"
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#include "dnet/route.h"
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#include "dnet/fw.h"
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#include "dnet/blob.h"
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#include "dnet/rand.h"
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#include "sim/host.hh"
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std::string eaddr_string(const uint8_t a[6]);
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struct EthHdr : protected eth_hdr
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{
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uint16_t type() const { return ntohs(eth_type); }
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const uint8_t *payload() const { return (const uint8_t *)this + sizeof(*this); }
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uint8_t *payload() { return (uint8_t *)this + sizeof(*this); }
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bool unicast() { return eth_dst.data[0] == 0x00; }
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bool multicast() { return eth_dst.data[0] == 0x01; }
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bool broadcast() { return eth_dst.data[0] == 0xff; }
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};
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struct IpHdr : protected ip_hdr
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{
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uint8_t version() const { return ip_v; }
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uint8_t hlen() const { return ip_hl; }
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uint8_t tos() const { return ip_tos; }
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uint16_t len() const { return ntohs(ip_len); }
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uint16_t id() const { return ntohs(ip_id); }
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uint16_t frag_flags() const { return ntohs(ip_off) >> 13; }
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uint16_t frag_off() const { return ntohs(ip_off) & 0x1fff; }
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uint8_t ttl() const { return ip_ttl; }
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uint8_t proto() const { return ip_p; }
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uint16_t sum() const { return ntohs(ip_sum); }
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uint32_t src() const { return ntohl(ip_src); }
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uint32_t dst() const { return ntohl(ip_dst); }
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void sum(uint16_t sum) { ip_sum = htons(sum); }
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uint16_t ip_cksum() const;
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uint16_t tu_cksum() const;
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const uint8_t *payload() const { return (const uint8_t *)this + hlen(); }
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uint8_t *payload() { return (uint8_t *)this + hlen(); }
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};
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struct TcpHdr : protected tcp_hdr
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{
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uint16_t sport() const { return ntohs(th_sport); }
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uint16_t dport() const { return ntohs(th_dport); }
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uint32_t seq() const { return ntohl(th_seq); }
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uint32_t ack() const { return ntohl(th_ack); }
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uint8_t off() const { return th_off; }
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uint8_t flags() const { return th_flags & 0x3f; }
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uint16_t win() const { return ntohs(th_win); }
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uint16_t sum() const { return ntohs(th_sum); }
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uint16_t urp() const { return ntohs(th_urp); }
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void sum(uint16_t sum) { th_sum = htons(sum); }
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const uint8_t *payload() const { return (const uint8_t *)this + off(); }
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uint8_t *payload() { return (uint8_t *)this + off(); }
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};
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struct UdpHdr : protected udp_hdr
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{
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uint16_t sport() const { return ntohs(uh_sport); }
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uint16_t dport() const { return ntohs(uh_dport); }
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uint16_t len() const { return ntohs(uh_ulen); }
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uint16_t sum() const { return ntohs(uh_sum); }
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void sum(uint16_t sum) { uh_sum = htons(sum); }
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const uint8_t *payload() const { return (const uint8_t *)this + sizeof(*this); }
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uint8_t *payload() { return (uint8_t *)this + sizeof(*this); }
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};
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#endif // __BASE_INET_HH__
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