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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [services/] [rarp.c] - Blame information for rev 849

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Line No. Rev Author Line
1 2 marcus.erl
/*
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 * (C) Copyright 2000
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 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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 *
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 * See file CREDITS for list of people who contributed to this
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 * project.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License as
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 * published by the Free Software Foundation; either version 2 of
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 * the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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 * MA 02111-1307 USA
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 */
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#include "common.h"
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#include "net.h"
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#include "bootp.h"
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#include "rarp.h"
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#include "tftp.h"
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#if (CONFIG_COMMANDS & CFG_CMD_NET)
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32 406 julius
#define TIMEOUT         5       /* Seconds before trying BOOTP again */
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#define TIMEOUT_COUNT   1       /* # of timeouts before giving up    */
34 2 marcus.erl
 
35 406 julius
int RarpTry;
36 2 marcus.erl
 
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/*
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 *      Handle a RARP received packet.
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 */
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static void
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RarpHandler(uchar * dummi0, unsigned dummi1, unsigned dummi2, unsigned dummi3)
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{
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#ifdef  DEBUG
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        printf("Got good RARP\n");
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#endif
46 406 julius
        TftpStart();
47 2 marcus.erl
}
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/*
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 *      Timeout on BOOTP request.
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 */
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static void RarpTimeout(void)
53 2 marcus.erl
{
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        if (RarpTry >= TIMEOUT_COUNT) {
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                puts("\nRetry count exceeded; starting again\n");
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                NetStartAgain();
57 2 marcus.erl
        } else {
58 406 julius
                NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);
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                RarpRequest();
60 2 marcus.erl
        }
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}
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63 406 julius
void RarpRequest(void)
64 2 marcus.erl
{
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        int i;
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        volatile uchar *pkt;
67 406 julius
        ARP_t *rarp;
68 2 marcus.erl
 
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        printf("RARP broadcast %d\n", ++RarpTry);
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        pkt = NetTxPacket;
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        NetSetEther(pkt, NetBcastAddr, PROT_RARP);
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        pkt += ETHER_HDR_SIZE;
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75 406 julius
        rarp = (ARP_t *) pkt;
76 2 marcus.erl
 
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        rarp->ar_hrd = ARP_ETHER;
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        rarp->ar_pro = PROT_IP;
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        rarp->ar_hln = 6;
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        rarp->ar_pln = 4;
81 406 julius
        rarp->ar_op = RARPOP_REQUEST;
82 2 marcus.erl
        NetCopyEther(&rarp->ar_data[0], NetOurEther);    /* source ET addr */
83 406 julius
        *(IPaddr_t *) (&rarp->ar_data[6]) = NetOurIP;   /* source IP addr */
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        NetCopyEther(&rarp->ar_data[10], NetOurEther);  /* dest ET addr = source ET addr ?? */
85 2 marcus.erl
        /* dest. IP addr set to broadcast */
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        for (i = 0; i <= 3; i++) {
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                rarp->ar_data[16 + i] = 0xff;
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        }
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        NetSendPacket(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE);
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        NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);
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        NetSetHandler(RarpHandler);
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}
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#endif /* CFG_CMD_NET */

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