iodev/eth.h

   1 /////////////////////////////////////////////////////////////////////////
   2 // $Id: eth.h,v 1.19 2008/12/11 18:01:56 vruppert Exp $
   3 /////////////////////////////////////////////////////////////////////////
   4 //
   5 //  Copyright (C) 2001  MandrakeSoft S.A.
   6 //
   7 //    MandrakeSoft S.A.
   8 //    43, rue d'Aboukir
   9 //    75002 Paris - France
  10 //    http://www.linux-mandrake.com/
  11 //    http://www.mandrakesoft.com/
  12 //
  13 //  This library is free software; you can redistribute it and/or
  14 //  modify it under the terms of the GNU Lesser General Public
  15 //  License as published by the Free Software Foundation; either
  16 //  version 2 of the License, or (at your option) any later version.
  17 //
  18 //  This library is distributed in the hope that it will be useful,
  19 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 //  Lesser General Public License for more details.
  22 //
  23 //  You should have received a copy of the GNU Lesser General Public
  24 //  License along with this library; if not, write to the Free Software
  25 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  26
  27 // Peter Grehan (grehan@iprg.nokia.com) coded all of this
  28 // NE2000/ether stuff.
  29
  30 //  eth.h  - see eth_null.cc for implementation details
  31
  32 #ifndef BX_ETH_H
  33 #define BX_ETH_H
  34
  35 #define BX_PACKET_BUFSIZE 2048 // Enough for an ether frame
  36
  37 typedef void (*eth_rx_handler_t)(void *arg, const void *buf, unsigned len);
  38
  39 static const Bit8u broadcast_macaddr[6] = {0xff,0xff,0xff,0xff,0xff,0xff};
  40
  41 int execute_script(const char *name, char* arg1);
  42
  43 //
  44 //  The eth_pktmover class is used by ethernet chip emulations
  45 // to interface to the outside world. An instance of this
  46 // would allow frames to be sent to and received from some
  47 // entity. An example would be the packet filter on a Unix
  48 // system, an NDIS driver in promisc mode on WinNT, or maybe
  49 // a simulated network that talks to another process.
  50 //
  51 class eth_pktmover_c {
  52 public:
  53   virtual void sendpkt(void *buf, unsigned io_len) = 0;
  54   virtual ~eth_pktmover_c () {}
  55 protected:
  56   eth_rx_handler_t  rxh;   // receive callback
  57   void *rxarg;
  58 };
  59
  60
  61 //
  62 //  The eth_locator class is used by pktmover classes to register
  63 // their name. Chip emulations use the static 'create' method
  64 // to locate and instantiate a pktmover class.
  65 //
  66 class eth_locator_c {
  67 public:
  68   static eth_pktmover_c *create(const char *type, const char *netif,
  69                                 const char *macaddr,
  70                                 eth_rx_handler_t rxh,
  71                                 void *rxarg,
  72                                 const char *script);
  73 protected:
  74   eth_locator_c(const char *type);
  75   virtual ~eth_locator_c() {}
  76   virtual eth_pktmover_c *allocate(const char *netif,
  77                                 const char *macaddr,
  78                                 eth_rx_handler_t rxh,
  79                                 void *rxarg,
  80                                 const char *script) = 0;
  81 private:
  82   static eth_locator_c *all;
  83   eth_locator_c *next;
  84   const char *type;
  85 };
  86
  87 #endif