///////////////////////////////////////////////////////////////////////// // $Id$ ///////////////////////////////////////////////////////////////////////// // // Copyright (C) 2001-2011 The Bochs Project // // 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 "iodev.h" #include "netmod.h" #if BX_NETWORKING #define LOG_THIS netdev-> #define BX_ETH_NULL_LOGGING 1 // // 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, eth_rx_status_t rxstat, bx_devmodel_c *dev, const char *script); 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, eth_rx_status_t rxstat, bx_devmodel_c *dev, const char *script) { return (new bx_null_pktmover_c(netif, macaddr, rxh, rxstat, dev, script)); } } 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, eth_rx_status_t rxstat, bx_devmodel_c *dev, const char *script) { this->netdev = dev; BX_INFO(("null network driver")); #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->rxstat = rxstat; // 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. size_t 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 write_pktlog_txt(txlog_txt, (const Bit8u *)buf, io_len, 0); // flush log so that we see the packets as they arrive w/o buffering fflush(txlog); #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; bx_devmodel_c *netdev = class_ptr->netdev; 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. size_t 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 write_pktlog_txt(class_ptr->rxlog_txt, buf, io_len, 1); // flush log so that we see the packets as they arrive w/o buffering fflush(class_ptr->rxlog); } #endif } #endif /* if BX_NETWORKING */