2 * Copied from Linux Monitor (LiMon) - Networking.
4 * Copyright 1994 - 2000 Neil Russell.
6 * Copyright 2000 Roland Borde
7 * Copyright 2000 Paolo Scaffardi
8 * Copyright 2000-2002 Wolfgang Denk, wd@denx.de
14 * The user interface supports commands for BOOTP, RARP, and TFTP.
15 * Also, we support ARP internally. Depending on available data,
16 * these interact as follows:
20 * Prerequisites: - own ethernet address
21 * We want: - own IP address
22 * - TFTP server IP address
28 * Prerequisites: - own ethernet address
29 * We want: - own IP address
30 * - TFTP server IP address
35 * Prerequisites: - own ethernet address
37 * - TFTP server IP address
38 * We want: - TFTP server ethernet address
43 * Prerequisites: - own ethernet address
44 * We want: - IP, Netmask, ServerIP, Gateway IP
45 * - bootfilename, lease time
50 * Prerequisites: - own ethernet address
52 * - TFTP server IP address
53 * - TFTP server ethernet address
54 * - name of bootfile (if unknown, we use a default name
55 * derived from our own IP address)
56 * We want: - load the boot file
61 * Prerequisites: - own ethernet address
63 * - name of bootfile (if unknown, we use a default name
64 * derived from our own IP address)
65 * We want: - load the boot file
70 * Prerequisites: - own ethernet address
72 * We want: - network time
85 #ifdef CONFIG_STATUS_LED
86 #include <status_led.h>
89 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
93 #if (CONFIG_COMMANDS & CFG_CMD_NET)
95 #define ARP_TIMEOUT 5 /* Seconds before trying ARP again */
96 #ifndef CONFIG_NET_RETRY_COUNT
97 # define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */
99 # define ARP_TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
106 /** BOOTP EXTENTIONS **/
108 IPaddr_t NetOurSubnetMask=0; /* Our subnet mask (0=unknown) */
109 IPaddr_t NetOurGatewayIP=0; /* Our gateways IP address */
110 IPaddr_t NetOurDNSIP=0; /* Our DNS IP address */
111 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
112 IPaddr_t NetOurDNS2IP=0; /* Our 2nd DNS IP address */
114 char NetOurNISDomain[32]={0,}; /* Our NIS domain */
115 char NetOurHostName[32]={0,}; /* Our hostname */
116 char NetOurRootPath[64]={0,}; /* Our bootpath */
117 ushort NetBootFileSize=0; /* Our bootfile size in blocks */
119 /** END OF BOOTP EXTENTIONS **/
121 ulong NetBootFileXferSize; /* The actual transferred size of the bootfile (in bytes) */
122 uchar NetOurEther[6]; /* Our ethernet address */
123 uchar NetServerEther[6] = /* Boot server enet address */
124 { 0, 0, 0, 0, 0, 0 };
125 IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
126 IPaddr_t NetServerIP; /* Our IP addr (0 = unknown) */
127 volatile uchar *NetRxPkt; /* Current receive packet */
128 int NetRxPktLen; /* Current rx packet length */
129 unsigned NetIPID; /* IP packet ID */
130 uchar NetBcastAddr[6] = /* Ethernet bcast address */
131 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
132 uchar NetEtherNullAddr[6] =
133 { 0, 0, 0, 0, 0, 0 };
134 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
135 uchar NetCDPAddr[6] = /* Ethernet bcast address */
136 { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
138 int NetState; /* Network loop state */
139 #ifdef CONFIG_NET_MULTI
140 int NetRestartWrap = 0; /* Tried all network devices */
141 static int NetRestarted = 0; /* Network loop restarted */
142 static int NetDevExists = 0; /* At least one device configured */
145 /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
146 ushort NetOurVLAN = 0xFFFF; /* default is without VLAN */
147 ushort NetOurNativeVLAN = 0xFFFF; /* ditto */
149 char BootFile[128]; /* Boot File name */
151 #if (CONFIG_COMMANDS & CFG_CMD_PING)
152 IPaddr_t NetPingIP; /* the ip address to ping */
154 static void PingStart(void);
157 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
158 static void CDPStart(void);
161 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
162 IPaddr_t NetNtpServerIP; /* NTP server IP address */
163 int NetTimeOffset=0; /* offset time from UTC */
166 #ifdef CONFIG_NETCONSOLE
168 int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len);
171 volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
173 volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */
175 static rxhand_f *packetHandler; /* Current RX packet handler */
176 static thand_f *timeHandler; /* Current timeout handler */
177 static ulong timeStart; /* Time base value */
178 static ulong timeDelta; /* Current timeout value */
179 volatile uchar *NetTxPacket = 0; /* THE transmit packet */
181 static int net_check_prereq (proto_t protocol);
183 /**********************************************************************/
185 IPaddr_t NetArpWaitPacketIP;
186 IPaddr_t NetArpWaitReplyIP;
187 uchar *NetArpWaitPacketMAC; /* MAC address of waiting packet's destination */
188 uchar *NetArpWaitTxPacket; /* THE transmit packet */
189 int NetArpWaitTxPacketSize;
190 uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
191 ulong NetArpWaitTimerStart;
194 void ArpRequest (void)
201 printf ("ARP broadcast %d\n", NetArpWaitTry);
205 pkt += NetSetEther (pkt, NetBcastAddr, PROT_ARP);
209 arp->ar_hrd = htons (ARP_ETHER);
210 arp->ar_pro = htons (PROT_IP);
213 arp->ar_op = htons (ARPOP_REQUEST);
215 memcpy (&arp->ar_data[0], NetOurEther, 6); /* source ET addr */
216 NetWriteIP ((uchar *) & arp->ar_data[6], NetOurIP); /* source IP addr */
217 for (i = 10; i < 16; ++i) {
218 arp->ar_data[i] = 0; /* dest ET addr = 0 */
221 if ((NetArpWaitPacketIP & NetOurSubnetMask) !=
222 (NetOurIP & NetOurSubnetMask)) {
223 if (NetOurGatewayIP == 0) {
224 puts ("## Warning: gatewayip needed but not set\n");
226 NetArpWaitReplyIP = NetOurGatewayIP;
228 NetArpWaitReplyIP = NetArpWaitPacketIP;
231 NetWriteIP ((uchar *) & arp->ar_data[16], NetArpWaitReplyIP);
232 (void) eth_send (NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
235 void ArpTimeoutCheck(void)
239 if (!NetArpWaitPacketIP)
244 /* check for arp timeout */
245 if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT * CFG_HZ) {
248 if (NetArpWaitTry >= ARP_TIMEOUT_COUNT) {
249 puts ("\nARP Retry count exceeded; starting again\n");
253 NetArpWaitTimerStart = t;
259 /**********************************************************************/
261 * Main network processing loop.
265 NetLoop(proto_t protocol)
267 DECLARE_GLOBAL_DATA_PTR;
271 #ifdef CONFIG_NET_MULTI
276 /* XXX problem with bss workaround */
277 NetArpWaitPacketMAC = NULL;
278 NetArpWaitTxPacket = NULL;
279 NetArpWaitPacketIP = 0;
280 NetArpWaitReplyIP = 0;
281 NetArpWaitTxPacket = NULL;
287 * Setup packet buffers, aligned correctly.
289 NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
290 NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
291 for (i = 0; i < PKTBUFSRX; i++) {
292 NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN;
296 if (!NetArpWaitTxPacket) {
297 NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1);
298 NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN;
299 NetArpWaitTxPacketSize = 0;
303 #ifdef CONFIG_NET_MULTI
306 if (eth_init(bd) < 0)
310 #ifdef CONFIG_NET_MULTI
311 memcpy (NetOurEther, eth_get_dev()->enetaddr, 6);
313 memcpy (NetOurEther, bd->bi_enetaddr, 6);
316 NetState = NETLOOP_CONTINUE;
319 * Start the ball rolling with the given start function. From
320 * here on, this code is a state machine driven by received
321 * packets and timer events.
325 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
328 #if (CONFIG_COMMANDS & CFG_CMD_PING)
331 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
336 NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
337 NetOurGatewayIP = getenv_IPaddr ("gatewayip");
338 NetOurSubnetMask= getenv_IPaddr ("netmask");
339 NetOurVLAN = getenv_VLAN("vlan");
340 NetOurNativeVLAN = getenv_VLAN("nvlan");
343 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
348 NetServerIP = getenv_IPaddr ("serverip");
350 #if (CONFIG_COMMANDS & CFG_CMD_PING)
355 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
368 * initialize our IP addr to 0 in order to accept ANY
369 * IP addr assigned to us by the BOOTP / RARP server
372 NetServerIP = getenv_IPaddr ("serverip");
373 NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
374 NetOurNativeVLAN = getenv_VLAN("nvlan");
376 NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
377 NetOurNativeVLAN = getenv_VLAN("nvlan");
383 switch (net_check_prereq (protocol)) {
385 /* network not configured */
388 #ifdef CONFIG_NET_MULTI
390 /* network device not configured */
392 #endif /* CONFIG_NET_MULTI */
395 #ifdef CONFIG_NET_MULTI
400 /* always use ARP to get server ethernet address */
404 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
406 /* Start with a clean slate... */
409 NetServerIP = getenv_IPaddr ("serverip");
410 DhcpRequest(); /* Basically same as BOOTP */
412 #endif /* CFG_CMD_DHCP */
423 #if (CONFIG_COMMANDS & CFG_CMD_PING)
428 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
433 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
438 #ifdef CONFIG_NETCONSOLE
443 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
452 NetBootFileXferSize = 0;
456 #if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
457 #if defined(CFG_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
459 * Echo the inverted link state to the fault LED.
461 if(miiphy_link(CFG_FAULT_MII_ADDR)) {
462 status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
464 status_led_set (STATUS_LED_RED, STATUS_LED_ON);
466 #endif /* CFG_FAULT_ECHO_LINK_DOWN, ... */
467 #endif /* CONFIG_MII, ... */
470 * Main packet reception loop. Loop receiving packets until
471 * someone sets `NetState' to a state that terminates.
475 #ifdef CONFIG_SHOW_ACTIVITY
477 extern void show_activity(int arg);
482 * Check the ethernet for a new packet. The ethernet
483 * receive routine will process it.
488 * Abort if ctrl-c was pressed.
499 * Check for a timeout, and run the timeout handler
502 if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) {
505 #if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
506 # if defined(CFG_FAULT_ECHO_LINK_DOWN) &&
507 defined(CONFIG_STATUS_LED) &&
508 defined(STATUS_LED_RED)
510 * Echo the inverted link state to the fault LED.
512 if(miiphy_link(CFG_FAULT_MII_ADDR)) {
513 status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
515 status_led_set (STATUS_LED_RED, STATUS_LED_ON);
517 # endif /* CFG_FAULT_ECHO_LINK_DOWN, ... */
518 #endif /* CONFIG_MII, ... */
520 timeHandler = (thand_f *)0;
527 case NETLOOP_RESTART:
528 #ifdef CONFIG_NET_MULTI
533 case NETLOOP_SUCCESS:
534 if (NetBootFileXferSize > 0) {
536 printf("Bytes transferred = %ld (%lx hex)\n",
538 NetBootFileXferSize);
539 sprintf(buf, "%lx", NetBootFileXferSize);
540 setenv("filesize", buf);
542 sprintf(buf, "%lX", (unsigned long)load_addr);
543 setenv("fileaddr", buf);
546 return NetBootFileXferSize;
554 /**********************************************************************/
557 startAgainTimeout(void)
559 NetState = NETLOOP_RESTART;
563 startAgainHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
565 /* Totally ignore the packet */
568 void NetStartAgain (void)
570 #ifdef CONFIG_NET_MULTI
571 DECLARE_GLOBAL_DATA_PTR;
574 int noretry = 0, once = 0;
576 if ((nretry = getenv ("netretry")) != NULL) {
577 noretry = (strcmp (nretry, "no") == 0);
578 once = (strcmp (nretry, "once") == 0);
582 NetState = NETLOOP_FAIL;
585 #ifndef CONFIG_NET_MULTI
586 NetSetTimeout (10 * CFG_HZ, startAgainTimeout);
587 NetSetHandler (startAgainHandler);
588 #else /* !CONFIG_NET_MULTI*/
590 eth_try_another (!NetRestarted);
592 if (NetRestartWrap) {
594 if (NetDevExists && !once) {
595 NetSetTimeout (10 * CFG_HZ, startAgainTimeout);
596 NetSetHandler (startAgainHandler);
598 NetState = NETLOOP_FAIL;
601 NetState = NETLOOP_RESTART;
603 #endif /* CONFIG_NET_MULTI */
606 /**********************************************************************/
612 NetSetHandler(rxhand_f * f)
619 NetSetTimeout(ulong iv, thand_f * f)
622 timeHandler = (thand_f *)0;
625 timeStart = get_timer(0);
632 NetSendPacket(volatile uchar * pkt, int len)
634 (void) eth_send(pkt, len);
638 NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
642 /* convert to new style broadcast */
646 /* if broadcast, make the ether address a broadcast and don't do ARP */
647 if (dest == 0xFFFFFFFF)
648 ether = NetBcastAddr;
650 /* if MAC address was not discovered yet, save the packet and do an ARP request */
651 if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
654 printf("sending ARP for %08lx\n", dest);
656 NetArpWaitPacketIP = dest;
657 NetArpWaitPacketMAC = ether;
659 pkt = NetArpWaitTxPacket;
660 pkt += NetSetEther (pkt, NetArpWaitPacketMAC, PROT_IP);
662 NetSetIP (pkt, dest, dport, sport, len);
663 memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len);
665 /* size of the waiting packet */
666 NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len;
668 /* and do the ARP request */
670 NetArpWaitTimerStart = get_timer(0);
672 return 1; /* waiting */
676 printf("sending UDP to %08lx/%02x:%02x:%02x:%02x:%02x:%02x\n",
677 dest, ether[0], ether[1], ether[2], ether[3], ether[4], ether[5]);
680 pkt = (uchar *)NetTxPacket;
681 pkt += NetSetEther (pkt, ether, PROT_IP);
682 NetSetIP (pkt, dest, dport, sport, len);
683 (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len);
685 return 0; /* transmitted */
688 #if (CONFIG_COMMANDS & CFG_CMD_PING)
689 static ushort PingSeqNo;
698 /* XXX always send arp request */
700 memcpy(mac, NetEtherNullAddr, 6);
703 printf("sending ARP for %08lx\n", NetPingIP);
706 NetArpWaitPacketIP = NetPingIP;
707 NetArpWaitPacketMAC = mac;
709 pkt = NetArpWaitTxPacket;
710 pkt += NetSetEther(pkt, mac, PROT_IP);
712 ip = (volatile IP_t *)pkt;
715 * Construct an IP and ICMP header. (need to set no fragment bit - XXX)
717 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
719 ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8);
720 ip->ip_id = htons(NetIPID++);
721 ip->ip_off = htons(0x4000); /* No fragmentation */
723 ip->ip_p = 0x01; /* ICMP */
725 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
726 NetCopyIP((void*)&ip->ip_dst, &NetPingIP); /* - "" - */
727 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
729 s = &ip->udp_src; /* XXX ICMP starts here */
730 s[0] = htons(0x0800); /* echo-request, code */
731 s[1] = 0; /* checksum */
732 s[2] = 0; /* identifier */
733 s[3] = htons(PingSeqNo++); /* sequence number */
734 s[1] = ~NetCksum((uchar *)s, 8/2);
736 /* size of the waiting packet */
737 NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
739 /* and do the ARP request */
741 NetArpWaitTimerStart = get_timer(0);
743 return 1; /* waiting */
750 NetState = NETLOOP_FAIL; /* we did not get the reply */
754 PingHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
757 volatile IP_t *ip = (volatile IP_t *)pkt;
759 tmp = NetReadIP((void *)&ip->ip_src);
760 if (tmp != NetPingIP)
763 NetState = NETLOOP_SUCCESS;
766 static void PingStart(void)
768 #if defined(CONFIG_NET_MULTI)
769 printf ("Using %s device\n", eth_get_name());
770 #endif /* CONFIG_NET_MULTI */
771 NetSetTimeout (10 * CFG_HZ, PingTimeout);
772 NetSetHandler (PingHandler);
776 #endif /* CFG_CMD_PING */
778 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
780 #define CDP_DEVICE_ID_TLV 0x0001
781 #define CDP_ADDRESS_TLV 0x0002
782 #define CDP_PORT_ID_TLV 0x0003
783 #define CDP_CAPABILITIES_TLV 0x0004
784 #define CDP_VERSION_TLV 0x0005
785 #define CDP_PLATFORM_TLV 0x0006
786 #define CDP_NATIVE_VLAN_TLV 0x000a
787 #define CDP_APPLIANCE_VLAN_TLV 0x000e
788 #define CDP_TRIGGER_TLV 0x000f
789 #define CDP_POWER_CONSUMPTION_TLV 0x0010
790 #define CDP_SYSNAME_TLV 0x0014
791 #define CDP_SYSOBJECT_TLV 0x0015
792 #define CDP_MANAGEMENT_ADDRESS_TLV 0x0016
794 #define CDP_TIMEOUT (CFG_HZ/4) /* one packet every 250ms */
799 ushort CDPNativeVLAN;
800 ushort CDPApplianceVLAN;
802 static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
804 static ushort CDP_compute_csum(const uchar *buff, ushort len)
812 odd = 1 & (ulong)buff;
819 result += *((const ushort *)buff)++;
820 if (result & 0x80000000)
821 result = (result & 0xFFFF) + (result >> 16);
825 leftover = (signed short)(*(const signed char *)buff);
826 /* * XXX CISCO SUCKS big time! (and blows too) */
827 result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff);
830 result = (result & 0xFFFF) + (result >> 16);
833 result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
836 /* add up 16-bit and 17-bit words for 17+c bits */
837 result = (result & 0xffff) + (result >> 16);
838 /* add up 16-bit and 2-bit for 16+c bit */
839 result = (result & 0xffff) + (result >> 16);
841 result = (result & 0xffff) + (result >> 16);
844 csum = ~(ushort)result;
846 /* run time endian detection */
847 if (csum != htons(csum)) /* little endian */
853 int CDPSendTrigger(void)
861 #if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \
862 defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM)
867 et = (Ethernet_t *)pkt;
869 /* NOTE: trigger sent not on any VLAN */
871 /* form ethernet header */
872 memcpy(et->et_dest, NetCDPAddr, 6);
873 memcpy(et->et_src, NetOurEther, 6);
875 pkt += ETHER_HDR_SIZE;
878 memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr));
879 pkt += sizeof(CDP_SNAP_hdr);
882 *pkt++ = 0x02; /* CDP version 2 */
883 *pkt++ = 180; /* TTL */
884 s = (volatile ushort *)pkt;
886 *s++ = htons(0); /* checksum (0 for later calculation) */
889 #ifdef CONFIG_CDP_DEVICE_ID
890 *s++ = htons(CDP_DEVICE_ID_TLV);
891 *s++ = htons(CONFIG_CDP_DEVICE_ID);
892 memset(buf, 0, sizeof(buf));
893 sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%02X%02X%02X%02X%02X%02X",
894 NetOurEther[0] & 0xff, NetOurEther[1] & 0xff,
895 NetOurEther[2] & 0xff, NetOurEther[3] & 0xff,
896 NetOurEther[4] & 0xff, NetOurEther[5] & 0xff);
897 memcpy((uchar *)s, buf, 16);
901 #ifdef CONFIG_CDP_PORT_ID
902 *s++ = htons(CDP_PORT_ID_TLV);
903 memset(buf, 0, sizeof(buf));
904 sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index());
906 if (len & 1) /* make it even */
908 *s++ = htons(len + 4);
909 memcpy((uchar *)s, buf, len);
913 #ifdef CONFIG_CDP_CAPABILITIES
914 *s++ = htons(CDP_CAPABILITIES_TLV);
916 *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES);
920 #ifdef CONFIG_CDP_VERSION
921 *s++ = htons(CDP_VERSION_TLV);
922 memset(buf, 0, sizeof(buf));
923 strcpy(buf, CONFIG_CDP_VERSION);
925 if (len & 1) /* make it even */
927 *s++ = htons(len + 4);
928 memcpy((uchar *)s, buf, len);
932 #ifdef CONFIG_CDP_PLATFORM
933 *s++ = htons(CDP_PLATFORM_TLV);
934 memset(buf, 0, sizeof(buf));
935 strcpy(buf, CONFIG_CDP_PLATFORM);
937 if (len & 1) /* make it even */
939 *s++ = htons(len + 4);
940 memcpy((uchar *)s, buf, len);
944 #ifdef CONFIG_CDP_TRIGGER
945 *s++ = htons(CDP_TRIGGER_TLV);
947 *(ulong *)s = htonl(CONFIG_CDP_TRIGGER);
951 #ifdef CONFIG_CDP_POWER_CONSUMPTION
952 *s++ = htons(CDP_POWER_CONSUMPTION_TLV);
954 *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION);
957 /* length of ethernet packet */
958 len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE);
959 et->et_protlen = htons(len);
961 len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr);
962 chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len));
967 (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket);
977 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
982 /* if not OK try again */
986 NetState = NETLOOP_SUCCESS;
990 CDPDummyHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
996 CDPHandler(const uchar * pkt, unsigned len)
1005 if (len < sizeof(CDP_SNAP_hdr) + 4)
1008 /* check for valid CDP SNAP header */
1009 if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0)
1012 pkt += sizeof(CDP_SNAP_hdr);
1013 len -= sizeof(CDP_SNAP_hdr);
1015 /* Version of CDP protocol must be >= 2 and TTL != 0 */
1016 if (pkt[0] < 0x02 || pkt[1] == 0)
1019 /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
1021 printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
1024 if (CDP_compute_csum(pkt, len) != 0)
1036 ss = (const ushort *)pkt;
1037 type = ntohs(ss[0]);
1038 tlen = ntohs(ss[1]);
1046 ss += 2; /* point ss to the data of the TLV */
1050 case CDP_DEVICE_ID_TLV:
1052 case CDP_ADDRESS_TLV:
1054 case CDP_PORT_ID_TLV:
1056 case CDP_CAPABILITIES_TLV:
1058 case CDP_VERSION_TLV:
1060 case CDP_PLATFORM_TLV:
1062 case CDP_NATIVE_VLAN_TLV:
1065 case CDP_APPLIANCE_VLAN_TLV:
1066 t = (const uchar *)ss;
1072 ss = (const ushort *)(t + 1);
1074 #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
1075 if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE)
1078 vlan = ntohs(*ss); /* XXX will this work; dunno */
1083 case CDP_TRIGGER_TLV:
1085 case CDP_POWER_CONSUMPTION_TLV:
1087 case CDP_SYSNAME_TLV:
1089 case CDP_SYSOBJECT_TLV:
1091 case CDP_MANAGEMENT_ADDRESS_TLV:
1096 CDPApplianceVLAN = vlan;
1097 CDPNativeVLAN = nvlan;
1103 printf("** CDP packet is too short\n");
1107 static void CDPStart(void)
1109 #if defined(CONFIG_NET_MULTI)
1110 printf ("Using %s device\n", eth_get_name());
1115 CDPNativeVLAN = htons(-1);
1116 CDPApplianceVLAN = htons(-1);
1118 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
1119 NetSetHandler (CDPDummyHandler);
1123 #endif /* CFG_CMD_CDP */
1127 NetReceive(volatile uchar * inpkt, int len)
1135 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1138 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
1141 printf("packet received\n");
1146 et = (Ethernet_t *)inpkt;
1148 /* too small packet? */
1149 if (len < ETHER_HDR_SIZE)
1152 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1153 /* keep track if packet is CDP */
1154 iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0;
1157 myvlanid = ntohs(NetOurVLAN);
1158 if (myvlanid == (ushort)-1)
1159 myvlanid = VLAN_NONE;
1160 mynvlanid = ntohs(NetOurNativeVLAN);
1161 if (mynvlanid == (ushort)-1)
1162 mynvlanid = VLAN_NONE;
1164 x = ntohs(et->et_protlen);
1167 printf("packet received\n");
1172 * Got a 802 packet. Check the other protocol field.
1174 x = ntohs(et->et_prot);
1176 ip = (IP_t *)(inpkt + E802_HDR_SIZE);
1177 len -= E802_HDR_SIZE;
1179 } else if (x != PROT_VLAN) { /* normal packet */
1180 ip = (IP_t *)(inpkt + ETHER_HDR_SIZE);
1181 len -= ETHER_HDR_SIZE;
1183 } else { /* VLAN packet */
1184 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et;
1187 printf("VLAN packet received\n");
1189 /* too small packet? */
1190 if (len < VLAN_ETHER_HDR_SIZE)
1193 /* if no VLAN active */
1194 if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
1195 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1201 cti = ntohs(vet->vet_tag);
1202 vlanid = cti & VLAN_IDMASK;
1203 x = ntohs(vet->vet_type);
1205 ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE);
1206 len -= VLAN_ETHER_HDR_SIZE;
1210 printf("Receive from protocol 0x%x\n", x);
1213 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1215 CDPHandler((uchar *)ip, len);
1220 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1221 if (vlanid == VLAN_NONE)
1222 vlanid = (mynvlanid & VLAN_IDMASK);
1224 if (vlanid != (myvlanid & VLAN_IDMASK))
1232 * We have to deal with two types of ARP packets:
1233 * - REQUEST packets will be answered by sending our
1234 * IP address - if we know it.
1235 * - REPLY packates are expected only after we asked
1236 * for the TFTP server's or the gateway's ethernet
1237 * address; so if we receive such a packet, we set
1238 * the server ethernet address
1244 if (len < ARP_HDR_SIZE) {
1245 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1248 if (ntohs(arp->ar_hrd) != ARP_ETHER) {
1251 if (ntohs(arp->ar_pro) != PROT_IP) {
1254 if (arp->ar_hln != 6) {
1257 if (arp->ar_pln != 4) {
1261 if (NetOurIP == 0) {
1265 if (NetReadIP(&arp->ar_data[16]) != NetOurIP) {
1269 switch (ntohs(arp->ar_op)) {
1270 case ARPOP_REQUEST: /* reply with our IP address */
1272 puts ("Got ARP REQUEST, return our IP\n");
1275 pkt += NetSetEther(pkt, et->et_src, PROT_ARP);
1276 arp->ar_op = htons(ARPOP_REPLY);
1277 memcpy (&arp->ar_data[10], &arp->ar_data[0], 6);
1278 NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]);
1279 memcpy (&arp->ar_data[ 0], NetOurEther, 6);
1280 NetCopyIP(&arp->ar_data[ 6], &NetOurIP);
1281 (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE);
1284 case ARPOP_REPLY: /* arp reply */
1285 /* are we waiting for a reply */
1286 if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC)
1289 printf("Got ARP REPLY, set server/gtwy eth addr (%02x:%02x:%02x:%02x:%02x:%02x)\n",
1290 arp->ar_data[0], arp->ar_data[1],
1291 arp->ar_data[2], arp->ar_data[3],
1292 arp->ar_data[4], arp->ar_data[5]);
1295 tmp = NetReadIP(&arp->ar_data[6]);
1297 /* matched waiting packet's address */
1298 if (tmp == NetArpWaitReplyIP) {
1302 /* save address for later use */
1303 memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6);
1305 #ifdef CONFIG_NETCONSOLE
1306 (*packetHandler)(0,0,0,0);
1308 /* modify header, and transmit it */
1309 memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6);
1310 (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize);
1312 /* no arp request pending now */
1313 NetArpWaitPacketIP = 0;
1314 NetArpWaitTxPacketSize = 0;
1315 NetArpWaitPacketMAC = NULL;
1321 printf("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op));
1329 puts ("Got RARP\n");
1332 if (len < ARP_HDR_SIZE) {
1333 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1337 if ((ntohs(arp->ar_op) != RARPOP_REPLY) ||
1338 (ntohs(arp->ar_hrd) != ARP_ETHER) ||
1339 (ntohs(arp->ar_pro) != PROT_IP) ||
1340 (arp->ar_hln != 6) || (arp->ar_pln != 4)) {
1342 puts ("invalid RARP header\n");
1344 NetCopyIP(&NetOurIP, &arp->ar_data[16]);
1345 if (NetServerIP == 0)
1346 NetCopyIP(&NetServerIP, &arp->ar_data[ 6]);
1347 memcpy (NetServerEther, &arp->ar_data[ 0], 6);
1349 (*packetHandler)(0,0,0,0);
1357 if (len < IP_HDR_SIZE) {
1358 debug ("len bad %d < %d\n", len, IP_HDR_SIZE);
1361 if (len < ntohs(ip->ip_len)) {
1362 printf("len bad %d < %d\n", len, ntohs(ip->ip_len));
1365 len = ntohs(ip->ip_len);
1367 printf("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff);
1369 if ((ip->ip_hl_v & 0xf0) != 0x40) {
1372 if (ip->ip_off & htons(0x1fff)) { /* Can't deal w/ fragments */
1375 if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) {
1376 puts ("checksum bad\n");
1379 tmp = NetReadIP(&ip->ip_dst);
1380 if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) {
1384 * watch for ICMP host redirects
1386 * There is no real handler code (yet). We just watch
1387 * for ICMP host redirect messages. In case anybody
1388 * sees these messages: please contact me
1389 * (wd@denx.de), or - even better - send me the
1390 * necessary fixes :-)
1392 * Note: in all cases where I have seen this so far
1393 * it was a problem with the router configuration,
1394 * for instance when a router was configured in the
1395 * BOOTP reply, but the TFTP server was on the same
1396 * subnet. So this is probably a warning that your
1397 * configuration might be wrong. But I'm not really
1398 * sure if there aren't any other situations.
1400 if (ip->ip_p == IPPROTO_ICMP) {
1401 ICMP_t *icmph = (ICMP_t *)&(ip->udp_src);
1403 switch (icmph->type) {
1405 if (icmph->code != ICMP_REDIR_HOST)
1407 puts (" ICMP Host Redirect to ");
1408 print_IPaddr(icmph->un.gateway);
1411 #if (CONFIG_COMMANDS & CFG_CMD_PING)
1412 case ICMP_ECHO_REPLY:
1414 * IP header OK. Pass the packet to the current handler.
1416 /* XXX point to ip packet */
1417 (*packetHandler)((uchar *)ip, 0, 0, 0);
1423 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1427 #ifdef CONFIG_NETCONSOLE
1428 nc_input_packet((uchar *)ip +IP_HDR_SIZE,
1431 ntohs(ip->udp_len) - 8);
1434 * IP header OK. Pass the packet to the current handler.
1436 (*packetHandler)((uchar *)ip +IP_HDR_SIZE,
1439 ntohs(ip->udp_len) - 8);
1445 /**********************************************************************/
1447 static int net_check_prereq (proto_t protocol)
1451 #if (CONFIG_COMMANDS & CFG_CMD_PING)
1453 if (NetPingIP == 0) {
1454 puts ("*** ERROR: ping address not given\n");
1459 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
1461 if (NetNtpServerIP == 0) {
1462 puts ("*** ERROR: NTP server address not given\n");
1467 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
1472 if (NetServerIP == 0) {
1473 puts ("*** ERROR: `serverip' not set\n");
1476 #if (CONFIG_COMMANDS & (CFG_CMD_PING | CFG_CMD_SNTP))
1480 if (NetOurIP == 0) {
1481 puts ("*** ERROR: `ipaddr' not set\n");
1490 if (memcmp (NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
1491 #ifdef CONFIG_NET_MULTI
1492 extern int eth_get_dev_index (void);
1493 int num = eth_get_dev_index ();
1497 puts ("*** ERROR: No ethernet found.\n");
1500 puts ("*** ERROR: `ethaddr' not set\n");
1503 printf ("*** ERROR: `eth%daddr' not set\n",
1511 puts ("*** ERROR: `ethaddr' not set\n");
1519 return (0); /* OK */
1521 /**********************************************************************/
1524 NetCksumOk(uchar * ptr, int len)
1526 return !((NetCksum(ptr, len) + 1) & 0xfffe);
1531 NetCksum(uchar * ptr, int len)
1537 xsum += *((ushort *)ptr)++;
1538 xsum = (xsum & 0xffff) + (xsum >> 16);
1539 xsum = (xsum & 0xffff) + (xsum >> 16);
1540 return (xsum & 0xffff);
1548 myvlanid = ntohs(NetOurVLAN);
1549 if (myvlanid == (ushort)-1)
1550 myvlanid = VLAN_NONE;
1552 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE;
1556 NetSetEther(volatile uchar * xet, uchar * addr, uint prot)
1558 Ethernet_t *et = (Ethernet_t *)xet;
1561 myvlanid = ntohs(NetOurVLAN);
1562 if (myvlanid == (ushort)-1)
1563 myvlanid = VLAN_NONE;
1565 memcpy (et->et_dest, addr, 6);
1566 memcpy (et->et_src, NetOurEther, 6);
1567 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
1568 et->et_protlen = htons(prot);
1569 return ETHER_HDR_SIZE;
1571 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet;
1573 vet->vet_vlan_type = htons(PROT_VLAN);
1574 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1575 vet->vet_type = htons(prot);
1576 return VLAN_ETHER_HDR_SIZE;
1581 NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
1583 volatile IP_t *ip = (IP_t *)xip;
1586 * If the data is an odd number of bytes, zero the
1587 * byte after the last byte so that the checksum
1591 xip[IP_HDR_SIZE + len] = 0;
1594 * Construct an IP and UDP header.
1595 * (need to set no fragment bit - XXX)
1597 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
1599 ip->ip_len = htons(IP_HDR_SIZE + len);
1600 ip->ip_id = htons(NetIPID++);
1601 ip->ip_off = htons(0x4000); /* No fragmentation */
1603 ip->ip_p = 17; /* UDP */
1605 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
1606 NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */
1607 ip->udp_src = htons(sport);
1608 ip->udp_dst = htons(dport);
1609 ip->udp_len = htons(8 + len);
1611 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
1614 void copy_filename (uchar *dst, uchar *src, int size)
1616 if (*src && (*src == '"')) {
1621 while ((--size > 0) && *src && (*src != '"')) {
1627 #endif /* CFG_CMD_NET */
1629 void ip_to_string (IPaddr_t x, char *s)
1632 sprintf (s, "%d.%d.%d.%d",
1633 (int) ((x >> 24) & 0xff),
1634 (int) ((x >> 16) & 0xff),
1635 (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff)
1639 IPaddr_t string_to_ip(char *s)
1648 for (addr=0, i=0; i<4; ++i) {
1649 ulong val = s ? simple_strtoul(s, &e, 10) : 0;
1651 addr |= (val & 0xFF);
1657 return (htonl(addr));
1660 void VLAN_to_string(ushort x, char *s)
1664 if (x == (ushort)-1)
1670 sprintf(s, "%d", x & VLAN_IDMASK);
1673 ushort string_to_VLAN(char *s)
1678 return htons(VLAN_NONE);
1680 if (*s < '0' || *s > '9')
1683 id = (ushort)simple_strtoul(s, NULL, 10);
1688 void print_IPaddr (IPaddr_t x)
1692 ip_to_string (x, tmp);
1697 IPaddr_t getenv_IPaddr (char *var)
1699 return (string_to_ip(getenv(var)));
1702 ushort getenv_VLAN(char *var)
1704 return (string_to_VLAN(getenv(var)));