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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 */

Line No.	Rev	Author	Line
1	809	simons	`/*`
2			`* (C) Copyright 2000`
3			`* Wolfgang Denk, DENX Software Engineering, wd@denx.de.`
4			`*`
5			`* See file CREDITS for list of people who contributed to this`
6			`* project.`
7			`*`
8			`* This program is free software; you can redistribute it and/or`
9			`* modify it under the terms of the GNU General Public License as`
10			`* published by the Free Software Foundation; either version 2 of`
11			`* the License, or (at your option) any later version.`
12			`*`
13			`* This program is distributed in the hope that it will be useful,`
14			`* but WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
16			`* GNU General Public License for more details.`
17			`*`
18			`* You should have received a copy of the GNU General Public License`
19			`* along with this program; if not, write to the Free Software`
20			`* Foundation, Inc., 59 Temple Place, Suite 330, Boston,`
21			`* MA 02111-1307 USA`
22			`*/`
23
24			`#include "common.h"`
25			`#include "net.h"`
26			`#include "bootp.h"`
27			`#include "rarp.h"`
28			`#include "tftp.h"`
29
30			`#if (CONFIG_COMMANDS & CFG_CMD_NET)`
31
32			`#define TIMEOUT 5 /* Seconds before trying BOOTP again */`
33			`#define TIMEOUT_COUNT 1 /* # of timeouts before giving up */`
34
35
36			`int RarpTry;`
37
38			`/*`
39			`* Handle a RARP received packet.`
40			`*/`
41			`static void`
42			`RarpHandler(uchar * dummi0, unsigned dummi1, unsigned dummi2, unsigned dummi3)`
43			`{`
44			`#ifdef DEBUG`
45			`printf("Got good RARP\n");`
46			`#endif`
47			`TftpStart ();`
48			`}`
49
50
51			`/*`
52			`* Timeout on BOOTP request.`
53			`*/`
54			`static void`
55			`RarpTimeout(void)`
56			`{`
57			`if (RarpTry >= TIMEOUT_COUNT) {`
58			`puts ("\nRetry count exceeded; starting again\n");`
59			`NetStartAgain ();`
60			`} else {`
61			`NetSetTimeout (TIMEOUT * CFG_HZ, RarpTimeout);`
62			`RarpRequest ();`
63			`}`
64			`}`
65
66
67			`void`
68			`RarpRequest (void)`
69			`{`
70			`int i;`
71			`volatile uchar *pkt;`
72			`ARP_t * rarp;`
73
74			`printf("RARP broadcast %d\n", ++RarpTry);`
75			`pkt = NetTxPacket;`
76
77			`NetSetEther(pkt, NetBcastAddr, PROT_RARP);`
78			`pkt += ETHER_HDR_SIZE;`
79
80			`rarp = (ARP_t *)pkt;`
81
82			`rarp->ar_hrd = ARP_ETHER;`
83			`rarp->ar_pro = PROT_IP;`
84			`rarp->ar_hln = 6;`
85			`rarp->ar_pln = 4;`
86			`rarp->ar_op = RARPOP_REQUEST;`
87			`NetCopyEther(&rarp->ar_data[0], NetOurEther); /* source ET addr */`
88			`(IPaddr_t )(&rarp->ar_data[6]) = NetOurIP; /* source IP addr */`
89			`NetCopyEther(&rarp->ar_data[10], NetOurEther); /* dest ET addr = source ET addr ??*/`
90			`/* dest. IP addr set to broadcast */`
91			`for (i = 0; i <= 3; i++) {`
92			`rarp->ar_data[16 + i] = 0xff;`
93			`}`
94
95			`NetSendPacket(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE);`
96
97			`NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);`
98			`NetSetHandler(RarpHandler);`
99			`}`
100
101			`#endif /* CFG_CMD_NET */`

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[/] [or1k/] [branches/] [oc/] [orpmon/] [services/] [rarp.c] - Blame information for rev 1775