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https://github.com/brain-hackers/u-boot-brain
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![Kim Phillips](/assets/img/avatar_default.png)
bootp.c:44:14: warning: symbol 'dhcp_state' was not declared. Should it be static?
bootp.c:45:15: warning: symbol 'dhcp_leasetime' was not declared. Should it be static?
bootp.c:46:10: warning: symbol 'NetDHCPServerIP' was not declared. Should it be static?
arp.c:30:17: warning: symbol 'NetArpWaitReplyIP' was not declared. Should it be static?
arp.c:37:16: warning: symbol 'NetArpTxPacket' was not declared. Should it be static?
arp.c:38:17: warning: symbol 'NetArpPacketBuf' was not declared. Should it be static?
atheros.c:33:19: warning: symbol 'AR8021_driver' was not declared. Should it be static?
net.c:183:7: warning: symbol 'PktBuf' was not declared. Should it be static?
net.c:159:21: warning: symbol 'net_state' was not declared. Should it be static?
ping.c:73:6: warning: symbol 'ping_start' was not declared. Should it be static?
ping.c:82:13: warning: symbol 'ping_receive' was not declared. Should it be static?
tftp.c:53:7: warning: symbol 'TftpRRQTimeoutMSecs' was not declared. Should it be static?
tftp.c:54:5: warning: symbol 'TftpRRQTimeoutCountMax' was not declared. Should it be static?
eth.c:125:19: warning: symbol 'eth_current' was not declared. Should it be static?
Note: in the ping.c fix, commit a36b12f95a
"net: Move PING out of net.c" mistakenly carried the ifdef CMD_PING
clause from when it was necessary to avoid warnings when it was embedded
in net.c.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
237 lines
5.8 KiB
C
237 lines
5.8 KiB
C
/*
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* Copied from Linux Monitor (LiMon) - Networking.
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*
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* Copyright 1994 - 2000 Neil Russell.
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* (See License)
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* Copyright 2000 Roland Borde
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* Copyright 2000 Paolo Scaffardi
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* Copyright 2000-2002 Wolfgang Denk, wd@denx.de
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*/
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#include <common.h>
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#include "arp.h"
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#ifndef CONFIG_ARP_TIMEOUT
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/* Milliseconds before trying ARP again */
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# define ARP_TIMEOUT 5000UL
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#else
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# define ARP_TIMEOUT CONFIG_ARP_TIMEOUT
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#endif
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#ifndef CONFIG_NET_RETRY_COUNT
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# define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */
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#else
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# define ARP_TIMEOUT_COUNT CONFIG_NET_RETRY_COUNT
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#endif
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IPaddr_t NetArpWaitPacketIP;
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static IPaddr_t NetArpWaitReplyIP;
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/* MAC address of waiting packet's destination */
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uchar *NetArpWaitPacketMAC;
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int NetArpWaitTxPacketSize;
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ulong NetArpWaitTimerStart;
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int NetArpWaitTry;
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static uchar *NetArpTxPacket; /* THE ARP transmit packet */
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static uchar NetArpPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
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void ArpInit(void)
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{
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/* XXX problem with bss workaround */
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NetArpWaitPacketMAC = NULL;
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NetArpWaitPacketIP = 0;
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NetArpWaitReplyIP = 0;
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NetArpWaitTxPacketSize = 0;
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NetArpTxPacket = &NetArpPacketBuf[0] + (PKTALIGN - 1);
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NetArpTxPacket -= (ulong)NetArpTxPacket % PKTALIGN;
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}
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void arp_raw_request(IPaddr_t sourceIP, const uchar *targetEther,
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IPaddr_t targetIP)
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{
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uchar *pkt;
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struct arp_hdr *arp;
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int eth_hdr_size;
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debug_cond(DEBUG_DEV_PKT, "ARP broadcast %d\n", NetArpWaitTry);
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pkt = NetArpTxPacket;
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eth_hdr_size = NetSetEther(pkt, NetBcastAddr, PROT_ARP);
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pkt += eth_hdr_size;
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arp = (struct arp_hdr *) pkt;
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arp->ar_hrd = htons(ARP_ETHER);
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arp->ar_pro = htons(PROT_IP);
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arp->ar_hln = ARP_HLEN;
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arp->ar_pln = ARP_PLEN;
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arp->ar_op = htons(ARPOP_REQUEST);
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memcpy(&arp->ar_sha, NetOurEther, ARP_HLEN); /* source ET addr */
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NetWriteIP(&arp->ar_spa, sourceIP); /* source IP addr */
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memcpy(&arp->ar_tha, targetEther, ARP_HLEN); /* target ET addr */
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NetWriteIP(&arp->ar_tpa, targetIP); /* target IP addr */
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NetSendPacket(NetArpTxPacket, eth_hdr_size + ARP_HDR_SIZE);
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}
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void ArpRequest(void)
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{
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if ((NetArpWaitPacketIP & NetOurSubnetMask) !=
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(NetOurIP & NetOurSubnetMask)) {
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if (NetOurGatewayIP == 0) {
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puts("## Warning: gatewayip needed but not set\n");
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NetArpWaitReplyIP = NetArpWaitPacketIP;
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} else {
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NetArpWaitReplyIP = NetOurGatewayIP;
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}
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} else {
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NetArpWaitReplyIP = NetArpWaitPacketIP;
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}
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arp_raw_request(NetOurIP, NetEtherNullAddr, NetArpWaitReplyIP);
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}
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void ArpTimeoutCheck(void)
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{
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ulong t;
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if (!NetArpWaitPacketIP)
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return;
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t = get_timer(0);
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/* check for arp timeout */
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if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT) {
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NetArpWaitTry++;
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if (NetArpWaitTry >= ARP_TIMEOUT_COUNT) {
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puts("\nARP Retry count exceeded; starting again\n");
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NetArpWaitTry = 0;
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NetStartAgain();
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} else {
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NetArpWaitTimerStart = t;
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ArpRequest();
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}
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}
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}
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void ArpReceive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
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{
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struct arp_hdr *arp;
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IPaddr_t reply_ip_addr;
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uchar *pkt;
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int eth_hdr_size;
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/*
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* We have to deal with two types of ARP packets:
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* - REQUEST packets will be answered by sending our
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* IP address - if we know it.
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* - REPLY packates are expected only after we asked
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* for the TFTP server's or the gateway's ethernet
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* address; so if we receive such a packet, we set
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* the server ethernet address
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*/
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debug_cond(DEBUG_NET_PKT, "Got ARP\n");
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arp = (struct arp_hdr *)ip;
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if (len < ARP_HDR_SIZE) {
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printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
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return;
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}
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if (ntohs(arp->ar_hrd) != ARP_ETHER)
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return;
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if (ntohs(arp->ar_pro) != PROT_IP)
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return;
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if (arp->ar_hln != ARP_HLEN)
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return;
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if (arp->ar_pln != ARP_PLEN)
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return;
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if (NetOurIP == 0)
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return;
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if (NetReadIP(&arp->ar_tpa) != NetOurIP)
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return;
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switch (ntohs(arp->ar_op)) {
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case ARPOP_REQUEST:
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/* reply with our IP address */
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debug_cond(DEBUG_DEV_PKT, "Got ARP REQUEST, return our IP\n");
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pkt = (uchar *)et;
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eth_hdr_size = net_update_ether(et, et->et_src, PROT_ARP);
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pkt += eth_hdr_size;
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arp->ar_op = htons(ARPOP_REPLY);
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memcpy(&arp->ar_tha, &arp->ar_sha, ARP_HLEN);
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NetCopyIP(&arp->ar_tpa, &arp->ar_spa);
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memcpy(&arp->ar_sha, NetOurEther, ARP_HLEN);
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NetCopyIP(&arp->ar_spa, &NetOurIP);
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#ifdef CONFIG_CMD_LINK_LOCAL
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/*
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* Work-around for brain-damaged Cisco equipment with
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* arp-proxy enabled.
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*
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* If the requesting IP is not on our subnet, wait 5ms to
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* reply to ARP request so that our reply will overwrite
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* the arp-proxy's instead of the other way around.
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*/
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if ((NetReadIP(&arp->ar_tpa) & NetOurSubnetMask) !=
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(NetReadIP(&arp->ar_spa) & NetOurSubnetMask))
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udelay(5000);
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#endif
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NetSendPacket((uchar *)et, eth_hdr_size + ARP_HDR_SIZE);
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return;
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case ARPOP_REPLY: /* arp reply */
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/* are we waiting for a reply */
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if (!NetArpWaitPacketIP)
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break;
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#ifdef CONFIG_KEEP_SERVERADDR
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if (NetServerIP == NetArpWaitPacketIP) {
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char buf[20];
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sprintf(buf, "%pM", &arp->ar_sha);
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setenv("serveraddr", buf);
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}
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#endif
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reply_ip_addr = NetReadIP(&arp->ar_spa);
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/* matched waiting packet's address */
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if (reply_ip_addr == NetArpWaitReplyIP) {
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debug_cond(DEBUG_DEV_PKT,
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"Got ARP REPLY, set eth addr (%pM)\n",
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arp->ar_data);
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/* save address for later use */
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if (NetArpWaitPacketMAC != NULL)
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memcpy(NetArpWaitPacketMAC,
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&arp->ar_sha, ARP_HLEN);
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net_get_arp_handler()((uchar *)arp, 0, reply_ip_addr,
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0, len);
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/* set the mac address in the waiting packet's header
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and transmit it */
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memcpy(((struct ethernet_hdr *)NetTxPacket)->et_dest,
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&arp->ar_sha, ARP_HLEN);
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NetSendPacket(NetTxPacket, NetArpWaitTxPacketSize);
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/* no arp request pending now */
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NetArpWaitPacketIP = 0;
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NetArpWaitTxPacketSize = 0;
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NetArpWaitPacketMAC = NULL;
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}
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return;
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default:
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debug("Unexpected ARP opcode 0x%x\n",
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ntohs(arp->ar_op));
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return;
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}
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}
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