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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [services/] [rarp.c] - Rev 328
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/* * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this * project. * * 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 (at your option) 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include "common.h" #include "net.h" #include "bootp.h" #include "rarp.h" #include "tftp.h" #if (CONFIG_COMMANDS & CFG_CMD_NET) #define TIMEOUT 5 /* Seconds before trying BOOTP again */ #define TIMEOUT_COUNT 1 /* # of timeouts before giving up */ int RarpTry; /* * Handle a RARP received packet. */ static void RarpHandler(uchar * dummi0, unsigned dummi1, unsigned dummi2, unsigned dummi3) { #ifdef DEBUG printf("Got good RARP\n"); #endif TftpStart (); } /* * Timeout on BOOTP request. */ static void RarpTimeout(void) { if (RarpTry >= TIMEOUT_COUNT) { puts ("\nRetry count exceeded; starting again\n"); NetStartAgain (); } else { NetSetTimeout (TIMEOUT * CFG_HZ, RarpTimeout); RarpRequest (); } } void RarpRequest (void) { int i; volatile uchar *pkt; ARP_t * rarp; printf("RARP broadcast %d\n", ++RarpTry); pkt = NetTxPacket; NetSetEther(pkt, NetBcastAddr, PROT_RARP); pkt += ETHER_HDR_SIZE; rarp = (ARP_t *)pkt; rarp->ar_hrd = ARP_ETHER; rarp->ar_pro = PROT_IP; rarp->ar_hln = 6; rarp->ar_pln = 4; rarp->ar_op = RARPOP_REQUEST; NetCopyEther(&rarp->ar_data[0], NetOurEther); /* source ET addr */ *(IPaddr_t *)(&rarp->ar_data[6]) = NetOurIP; /* source IP addr */ NetCopyEther(&rarp->ar_data[10], NetOurEther); /* dest ET addr = source ET addr ??*/ /* dest. IP addr set to broadcast */ for (i = 0; i <= 3; i++) { rarp->ar_data[16 + i] = 0xff; } NetSendPacket(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE); NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout); NetSetHandler(RarpHandler); } #endif /* CFG_CMD_NET */
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