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/******************************************************************************
(c) 2002-2003 Christine Caulfield christine.caulfield@googlemail.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
******************************************************************************/
// interfaces.h
// Abstract out the linux-specific ioctls and interface stuff.
//
// To port latd, all you should need to do is extend this class with
// your platform-specific functions.
// See linux-interface.cc for example implementation.
#include <cstring>
#include <iostream>
class LATinterfaces
{
protected:
// Save a copy of the protocol
int protocol;
public:
LATinterfaces();
virtual ~LATinterfaces();
// Initialise the LAT protocol
virtual int Start(int proto)=0;
// Return a list of valid interface numbers and the count
virtual void get_all_interfaces(int ifs[], int &num)=0;
// Print the name of an interface
virtual std::string ifname(int ifn) = 0;
// Find an interface number by name
virtual int find_interface(char *name)=0;
// true if this class defines one FD for each active
// interface, false if one fd is used for all interfaces.
virtual bool one_fd_per_interface()=0;
// Return the FD for this interface (will only be called once for
// select if above returns false
virtual int get_fd(int ifn)=0;
// Send a packet to a given macaddr
virtual int send_packet(int ifn, unsigned char macaddr[], unsigned char *data, int len)=0;
// Receive a packet from a given FD (note FD not iface)
virtual int recv_packet(int fd, int &ifn, unsigned char macaddr[], unsigned char *data, int maxlen, bool &more)=0;
// Enable reception of LAT multicast messages
virtual int set_lat_multicast(int ifn)=0;
// Finished listening for LAT multicasts
virtual int remove_lat_multicast(int ifn)=0;
// Bind a socket to an interface
virtual int bind_socket(int interface)=0;
// Creates a platform-specifc interfaces class
static LATinterfaces *Create();
// Protocols we can Start()
static int ProtoLAT;
static int ProtoMOP;
};
// Make sure we have the packet types
#ifndef ETHERTYPE_LAT
#define ETHERTYPE_LAT 0x6004
#endif
#ifndef ETHERTYPE_MOPRC
#define ETHERTYPE_MOPRC 0x6002
#endif
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