diff options
Diffstat (limited to 'src/dev/net/etherpkt.hh')
-rw-r--r-- | src/dev/net/etherpkt.hh | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/dev/net/etherpkt.hh b/src/dev/net/etherpkt.hh new file mode 100644 index 000000000..4119578c3 --- /dev/null +++ b/src/dev/net/etherpkt.hh @@ -0,0 +1,95 @@ +/* + * Copyright (c) 2002-2005 The Regents of The University of Michigan + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * 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; + * neither the name of the copyright holders 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 COPYRIGHT HOLDERS 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 COPYRIGHT + * OWNER 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. + * + * Authors: Nathan Binkert + * Lisa Hsu + */ + +/* @file + * Reference counted class containing ethernet packet data + */ + +#ifndef __DEV_NET_ETHERPKT_HH__ +#define __DEV_NET_ETHERPKT_HH__ + +#include <cassert> +#include <iosfwd> +#include <memory> + +#include "base/types.hh" +#include "sim/serialize.hh" + +/* + * Reference counted class containing ethernet packet data + */ +class EthPacketData +{ + public: + /* + * Pointer to packet data will be deleted + */ + uint8_t *data; + + /* + * Length of the current packet + */ + unsigned length; + + public: + EthPacketData() + : data(NULL), length(0) + { } + + explicit EthPacketData(unsigned size) + : data(new uint8_t[size]), length(0) + { } + + ~EthPacketData() { if (data) delete [] data; } + + public: + /** + * This function pulls out the MAC source and destination addresses from + * the packet data and stores them in the caller specified buffers. + * + * @param src_addr The buffer to store the source MAC address. + * @param dst_addr The buffer to store the destination MAC address. + * @param length This is an inout parameter. The caller stores in this + * the size of the address buffers. On return, this will contain the + * actual address size stored in the buffers. (We assume that source + * address size is equal to that of the destination address.) + */ + void packAddress(uint8_t *src_addr, uint8_t *dst_addr, unsigned &length); + + void serialize(const std::string &base, CheckpointOut &cp) const; + void unserialize(const std::string &base, CheckpointIn &cp); + + unsigned size() const { return length; } +}; + +typedef std::shared_ptr<EthPacketData> EthPacketPtr; + +#endif // __DEV_NET_ETHERPKT_HH__ |