diff options
Diffstat (limited to 'tools/ioemu/iodev/eth_null.cc')
| -rw-r--r-- | tools/ioemu/iodev/eth_null.cc | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/tools/ioemu/iodev/eth_null.cc b/tools/ioemu/iodev/eth_null.cc new file mode 100644 index 0000000000..11162798ef --- /dev/null +++ b/tools/ioemu/iodev/eth_null.cc @@ -0,0 +1,164 @@ +///////////////////////////////////////////////////////////////////////// +// $Id: eth_null.cc,v 1.13 2002/11/20 19:06:23 bdenney Exp $ +///////////////////////////////////////////////////////////////////////// +// +// Copyright (C) 2001 MandrakeSoft S.A. +// +// MandrakeSoft S.A. +// 43, rue d'Aboukir +// 75002 Paris - France +// http://www.linux-mandrake.com/ +// http://www.mandrakesoft.com/ +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 2 of the License, or (at your option) any later version. +// +// This library 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 +// Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +// eth_null.cc - skeleton code for an ethernet pktmover + +// Various networking docs: +// http://www.graphcomp.com/info/rfc/ +// rfc0826: arp +// rfc0903: rarp + +// Define BX_PLUGGABLE in files that can be compiled into plugins. For +// platforms that require a special tag on exported symbols, BX_PLUGGABLE +// is used to know when we are exporting symbols and when we are importing. +#define BX_PLUGGABLE + +#include "bochs.h" +#if BX_NE2K_SUPPORT + +#define LOG_THIS bx_devices.pluginNE2kDevice-> + + +// +// Define the class. This is private to this module +// +class bx_null_pktmover_c : public eth_pktmover_c { +public: + bx_null_pktmover_c(const char *netif, const char *macaddr, + eth_rx_handler_t rxh, + void *rxarg); + void sendpkt(void *buf, unsigned io_len); +private: + int rx_timer_index; + static void rx_timer_handler(void *); + FILE *txlog, *txlog_txt, *rxlog, *rxlog_txt; +}; + + +// +// Define the static class that registers the derived pktmover class, +// and allocates one on request. +// +class bx_null_locator_c : public eth_locator_c { +public: + bx_null_locator_c(void) : eth_locator_c("null") {} +protected: + eth_pktmover_c *allocate(const char *netif, const char *macaddr, + eth_rx_handler_t rxh, + void *rxarg) { + return (new bx_null_pktmover_c(netif, macaddr, rxh, rxarg)); + } +} bx_null_match; + + +// +// Define the methods for the bx_null_pktmover derived class +// + +// the constructor +bx_null_pktmover_c::bx_null_pktmover_c(const char *netif, + const char *macaddr, + eth_rx_handler_t rxh, + void *rxarg) +{ +#if BX_ETH_NULL_LOGGING + // Start the rx poll + this->rx_timer_index = + bx_pc_system.register_timer(this, this->rx_timer_handler, 1000, + 1, 1, "eth_null"); // continuous, active + this->rxh = rxh; + this->rxarg = rxarg; + // eventually Bryce wants txlog to dump in pcap format so that + // tcpdump -r FILE can read it and interpret packets. + txlog = fopen ("ne2k-tx.log", "wb"); + if (!txlog) BX_PANIC (("open ne2k-tx.log failed")); + txlog_txt = fopen ("ne2k-txdump.txt", "wb"); + if (!txlog_txt) BX_PANIC (("open ne2k-txdump.txt failed")); + fprintf (txlog_txt, "null packetmover readable log file\n"); + fprintf (txlog_txt, "net IF = %s\n", netif); + fprintf (txlog_txt, "MAC address = "); + for (int i=0; i<6; i++) + fprintf (txlog_txt, "%02x%s", 0xff & macaddr[i], i<5?":" : ""); + fprintf (txlog_txt, "\n--\n"); + fflush (txlog_txt); +#endif +} + +void +bx_null_pktmover_c::sendpkt(void *buf, unsigned io_len) +{ +#if BX_ETH_NULL_LOGGING + BX_DEBUG (("sendpkt length %u", io_len)); + // dump raw bytes to a file, eventually dump in pcap format so that + // tcpdump -r FILE can interpret them for us. + unsigned int n = fwrite (buf, io_len, 1, txlog); + if (n != 1) BX_ERROR (("fwrite to txlog failed, io_len = %u", io_len)); + // dump packet in hex into an ascii log file + fprintf (txlog_txt, "NE2K transmitting a packet, length %u\n", io_len); + Bit8u *charbuf = (Bit8u *)buf; + for (n=0; n<io_len; n++) { + if (((n % 16) == 0) && n>0) + fprintf (txlog_txt, "\n"); + fprintf (txlog_txt, "%02x ", charbuf[n]); + } + fprintf (txlog_txt, "\n--\n"); + // flush log so that we see the packets as they arrive w/o buffering + fflush (txlog); + fflush (txlog_txt); +#endif +} + +void bx_null_pktmover_c::rx_timer_handler (void *this_ptr) +{ +#if BX_ETH_NULL_LOGGING + /// hey wait there is no receive data with a NULL ethernet, is there.... + + int io_len = 0; + Bit8u buf[1]; + bx_null_pktmover_c *class_ptr = (bx_null_pktmover_c *) this_ptr; + if (io_len > 0) { + BX_DEBUG (("receive packet length %u", io_len)); + // dump raw bytes to a file, eventually dump in pcap format so that + // tcpdump -r FILE can interpret them for us. + int n = fwrite (buf, io_len, 1, class_ptr->rxlog); + if (n != 1) BX_ERROR (("fwrite to rxlog failed, io_len = %u", io_len)); + // dump packet in hex into an ascii log file + fprintf (class_ptr->rxlog_txt, "NE2K transmitting a packet, length %u\n", io_len); + Bit8u *charbuf = (Bit8u *)buf; + for (n=0; n<io_len; n++) { + if (((n % 16) == 0) && n>0) + fprintf (class_ptr->rxlog_txt, "\n"); + fprintf (class_ptr->rxlog_txt, "%02x ", charbuf[n]); + } + fprintf (class_ptr->rxlog_txt, "\n--\n"); + // flush log so that we see the packets as they arrive w/o buffering + fflush (class_ptr->rxlog); + fflush (class_ptr->rxlog_txt); + } +#endif +} + +#endif /* if BX_NE2K_SUPPORT */ |