diff options
Diffstat (limited to 'net/arp.c')
-rw-r--r-- | net/arp.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/net/arp.c b/net/arp.c deleted file mode 100644 index c09dc1a..0000000 --- a/net/arp.c +++ /dev/null @@ -1,120 +0,0 @@ -/* - * (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 <command.h> -#include <net.h> -#include "bootp.h" -#include "tftp.h" -#include "arp.h" - -#if (CONFIG_COMMANDS & CFG_CMD_NET) - -#define TIMEOUT 5 /* Seconds before trying ARP again */ -#ifndef CONFIG_NET_RETRY_COUNT -# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */ -#else -# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT) -#endif - -static void ArpHandler(uchar *pkt, unsigned dest, unsigned src, unsigned len); -static void ArpTimeout(void); - -int ArpTry = 0; - -/* - * Handle a ARP received packet. - */ -static void -ArpHandler(uchar *pkt, unsigned dest, unsigned src, unsigned len) -{ - /* Check if the frame is really an ARP reply */ - if (memcmp (NetServerEther, NetBcastAddr, 6) != 0) { -#ifdef DEBUG - printf("Got good ARP - start TFTP\n"); -#endif - TftpStart (); - } -} - - -/* - * Timeout on ARP request. - */ -static void -ArpTimeout(void) -{ - if (ArpTry >= TIMEOUT_COUNT) { - puts ("\nRetry count exceeded; starting again\n"); - NetStartAgain (); - } else { - NetSetTimeout (TIMEOUT * CFG_HZ, ArpTimeout); - ArpRequest (); - } -} - - -void -ArpRequest (void) -{ - int i; - volatile uchar *pkt; - ARP_t * arp; - - printf("ARP broadcast %d\n", ++ArpTry); - pkt = NetTxPacket; - - NetSetEther(pkt, NetBcastAddr, PROT_ARP); - pkt += ETHER_HDR_SIZE; - - arp = (ARP_t *)pkt; - - arp->ar_hrd = htons(ARP_ETHER); - arp->ar_pro = htons(PROT_IP); - arp->ar_hln = 6; - arp->ar_pln = 4; - arp->ar_op = htons(ARPOP_REQUEST); - - memcpy (&arp->ar_data[0], NetOurEther, 6); /* source ET addr */ - NetWriteIP((uchar*)&arp->ar_data[6], NetOurIP); /* source IP addr */ - for (i=10; i<16; ++i) { - arp->ar_data[i] = 0; /* dest ET addr = 0 */ - } - - if((NetServerIP & NetOurSubnetMask) != (NetOurIP & NetOurSubnetMask)) { - if (NetOurGatewayIP == 0) { - puts ("## Warning: gatewayip needed but not set\n"); - } - NetWriteIP((uchar*)&arp->ar_data[16], NetOurGatewayIP); - } else { - NetWriteIP((uchar*)&arp->ar_data[16], NetServerIP); - } - - - NetSendPacket(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE); - - NetSetTimeout(TIMEOUT * CFG_HZ, ArpTimeout); - NetSetHandler(ArpHandler); -} - -#endif /* CFG_CMD_NET */ |