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) {
312 #ifdef CONFIG_NET_MULTI
313 memcpy (NetOurEther, eth_get_dev()->enetaddr, 6);
315 memcpy (NetOurEther, bd->bi_enetaddr, 6);
318 NetState = NETLOOP_CONTINUE;
321 * Start the ball rolling with the given start function. From
322 * here on, this code is a state machine driven by received
323 * packets and timer events.
327 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
330 #if (CONFIG_COMMANDS & CFG_CMD_PING)
333 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
338 NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
339 NetOurGatewayIP = getenv_IPaddr ("gatewayip");
340 NetOurSubnetMask= getenv_IPaddr ("netmask");
341 NetOurVLAN = getenv_VLAN("vlan");
342 NetOurNativeVLAN = getenv_VLAN("nvlan");
345 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
350 NetServerIP = getenv_IPaddr ("serverip");
352 #if (CONFIG_COMMANDS & CFG_CMD_PING)
357 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
370 * initialize our IP addr to 0 in order to accept ANY
371 * IP addr assigned to us by the BOOTP / RARP server
374 NetServerIP = getenv_IPaddr ("serverip");
375 NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
376 NetOurNativeVLAN = getenv_VLAN("nvlan");
378 NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
379 NetOurNativeVLAN = getenv_VLAN("nvlan");
385 switch (net_check_prereq (protocol)) {
387 /* network not configured */
391 #ifdef CONFIG_NET_MULTI
393 /* network device not configured */
395 #endif /* CONFIG_NET_MULTI */
398 #ifdef CONFIG_NET_MULTI
403 /* always use ARP to get server ethernet address */
407 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
409 /* Start with a clean slate... */
412 NetServerIP = getenv_IPaddr ("serverip");
413 DhcpRequest(); /* Basically same as BOOTP */
415 #endif /* CFG_CMD_DHCP */
426 #if (CONFIG_COMMANDS & CFG_CMD_PING)
431 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
436 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
441 #ifdef CONFIG_NETCONSOLE
446 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
455 NetBootFileXferSize = 0;
459 #if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
460 #if defined(CFG_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
462 * Echo the inverted link state to the fault LED.
464 if(miiphy_link(eth_get_dev()->name, CFG_FAULT_MII_ADDR)) {
465 status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
467 status_led_set (STATUS_LED_RED, STATUS_LED_ON);
469 #endif /* CFG_FAULT_ECHO_LINK_DOWN, ... */
470 #endif /* CONFIG_MII, ... */
473 * Main packet reception loop. Loop receiving packets until
474 * someone sets `NetState' to a state that terminates.
478 #ifdef CONFIG_SHOW_ACTIVITY
480 extern void show_activity(int arg);
485 * Check the ethernet for a new packet. The ethernet
486 * receive routine will process it.
491 * Abort if ctrl-c was pressed.
502 * Check for a timeout, and run the timeout handler
505 if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) {
508 #if defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
509 # if defined(CFG_FAULT_ECHO_LINK_DOWN) && \
510 defined(CONFIG_STATUS_LED) && \
511 defined(STATUS_LED_RED)
513 * Echo the inverted link state to the fault LED.
515 if(miiphy_link(eth_get_dev()->name, CFG_FAULT_MII_ADDR)) {
516 status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
518 status_led_set (STATUS_LED_RED, STATUS_LED_ON);
520 # endif /* CFG_FAULT_ECHO_LINK_DOWN, ... */
521 #endif /* CONFIG_MII, ... */
523 timeHandler = (thand_f *)0;
530 case NETLOOP_RESTART:
531 #ifdef CONFIG_NET_MULTI
536 case NETLOOP_SUCCESS:
537 if (NetBootFileXferSize > 0) {
539 printf("Bytes transferred = %ld (%lx hex)\n",
541 NetBootFileXferSize);
542 sprintf(buf, "%lx", NetBootFileXferSize);
543 setenv("filesize", buf);
545 sprintf(buf, "%lX", (unsigned long)load_addr);
546 setenv("fileaddr", buf);
549 return NetBootFileXferSize;
557 /**********************************************************************/
560 startAgainTimeout(void)
562 NetState = NETLOOP_RESTART;
566 startAgainHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
568 /* Totally ignore the packet */
571 void NetStartAgain (void)
573 #ifdef CONFIG_NET_MULTI
574 DECLARE_GLOBAL_DATA_PTR;
577 int noretry = 0, once = 0;
579 if ((nretry = getenv ("netretry")) != NULL) {
580 noretry = (strcmp (nretry, "no") == 0);
581 once = (strcmp (nretry, "once") == 0);
585 NetState = NETLOOP_FAIL;
588 #ifndef CONFIG_NET_MULTI
589 NetSetTimeout (10 * CFG_HZ, startAgainTimeout);
590 NetSetHandler (startAgainHandler);
591 #else /* !CONFIG_NET_MULTI*/
593 eth_try_another (!NetRestarted);
595 if (NetRestartWrap) {
597 if (NetDevExists && !once) {
598 NetSetTimeout (10 * CFG_HZ, startAgainTimeout);
599 NetSetHandler (startAgainHandler);
601 NetState = NETLOOP_FAIL;
604 NetState = NETLOOP_RESTART;
606 #endif /* CONFIG_NET_MULTI */
609 /**********************************************************************/
615 NetSetHandler(rxhand_f * f)
622 NetSetTimeout(ulong iv, thand_f * f)
625 timeHandler = (thand_f *)0;
628 timeStart = get_timer(0);
635 NetSendPacket(volatile uchar * pkt, int len)
637 (void) eth_send(pkt, len);
641 NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
645 /* convert to new style broadcast */
649 /* if broadcast, make the ether address a broadcast and don't do ARP */
650 if (dest == 0xFFFFFFFF)
651 ether = NetBcastAddr;
653 /* if MAC address was not discovered yet, save the packet and do an ARP request */
654 if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
657 printf("sending ARP for %08lx\n", dest);
659 NetArpWaitPacketIP = dest;
660 NetArpWaitPacketMAC = ether;
662 pkt = NetArpWaitTxPacket;
663 pkt += NetSetEther (pkt, NetArpWaitPacketMAC, PROT_IP);
665 NetSetIP (pkt, dest, dport, sport, len);
666 memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len);
668 /* size of the waiting packet */
669 NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len;
671 /* and do the ARP request */
673 NetArpWaitTimerStart = get_timer(0);
675 return 1; /* waiting */
679 printf("sending UDP to %08lx/%02x:%02x:%02x:%02x:%02x:%02x\n",
680 dest, ether[0], ether[1], ether[2], ether[3], ether[4], ether[5]);
683 pkt = (uchar *)NetTxPacket;
684 pkt += NetSetEther (pkt, ether, PROT_IP);
685 NetSetIP (pkt, dest, dport, sport, len);
686 (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len);
688 return 0; /* transmitted */
691 #if (CONFIG_COMMANDS & CFG_CMD_PING)
692 static ushort PingSeqNo;
701 /* XXX always send arp request */
703 memcpy(mac, NetEtherNullAddr, 6);
706 printf("sending ARP for %08lx\n", NetPingIP);
709 NetArpWaitPacketIP = NetPingIP;
710 NetArpWaitPacketMAC = mac;
712 pkt = NetArpWaitTxPacket;
713 pkt += NetSetEther(pkt, mac, PROT_IP);
715 ip = (volatile IP_t *)pkt;
718 * Construct an IP and ICMP header. (need to set no fragment bit - XXX)
720 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
722 ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8);
723 ip->ip_id = htons(NetIPID++);
724 ip->ip_off = htons(0x4000); /* No fragmentation */
726 ip->ip_p = 0x01; /* ICMP */
728 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
729 NetCopyIP((void*)&ip->ip_dst, &NetPingIP); /* - "" - */
730 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
732 s = &ip->udp_src; /* XXX ICMP starts here */
733 s[0] = htons(0x0800); /* echo-request, code */
734 s[1] = 0; /* checksum */
735 s[2] = 0; /* identifier */
736 s[3] = htons(PingSeqNo++); /* sequence number */
737 s[1] = ~NetCksum((uchar *)s, 8/2);
739 /* size of the waiting packet */
740 NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
742 /* and do the ARP request */
744 NetArpWaitTimerStart = get_timer(0);
746 return 1; /* waiting */
753 NetState = NETLOOP_FAIL; /* we did not get the reply */
757 PingHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
760 volatile IP_t *ip = (volatile IP_t *)pkt;
762 tmp = NetReadIP((void *)&ip->ip_src);
763 if (tmp != NetPingIP)
766 NetState = NETLOOP_SUCCESS;
769 static void PingStart(void)
771 #if defined(CONFIG_NET_MULTI)
772 printf ("Using %s device\n", eth_get_name());
773 #endif /* CONFIG_NET_MULTI */
774 NetSetTimeout (10 * CFG_HZ, PingTimeout);
775 NetSetHandler (PingHandler);
779 #endif /* CFG_CMD_PING */
781 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
783 #define CDP_DEVICE_ID_TLV 0x0001
784 #define CDP_ADDRESS_TLV 0x0002
785 #define CDP_PORT_ID_TLV 0x0003
786 #define CDP_CAPABILITIES_TLV 0x0004
787 #define CDP_VERSION_TLV 0x0005
788 #define CDP_PLATFORM_TLV 0x0006
789 #define CDP_NATIVE_VLAN_TLV 0x000a
790 #define CDP_APPLIANCE_VLAN_TLV 0x000e
791 #define CDP_TRIGGER_TLV 0x000f
792 #define CDP_POWER_CONSUMPTION_TLV 0x0010
793 #define CDP_SYSNAME_TLV 0x0014
794 #define CDP_SYSOBJECT_TLV 0x0015
795 #define CDP_MANAGEMENT_ADDRESS_TLV 0x0016
797 #define CDP_TIMEOUT (CFG_HZ/4) /* one packet every 250ms */
802 ushort CDPNativeVLAN;
803 ushort CDPApplianceVLAN;
805 static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
807 static ushort CDP_compute_csum(const uchar *buff, ushort len)
816 odd = 1 & (ulong)buff;
826 if (result & 0x80000000)
827 result = (result & 0xFFFF) + (result >> 16);
831 leftover = (signed short)(*(const signed char *)buff);
832 /* CISCO SUCKS big time! (and blows too):
833 * CDP uses the IP checksum algorithm with a twist;
834 * for the last byte it *sign* extends and sums.
836 result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff);
839 result = (result & 0xFFFF) + (result >> 16);
842 result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
845 /* add up 16-bit and 17-bit words for 17+c bits */
846 result = (result & 0xffff) + (result >> 16);
847 /* add up 16-bit and 2-bit for 16+c bit */
848 result = (result & 0xffff) + (result >> 16);
850 result = (result & 0xffff) + (result >> 16);
853 csum = ~(ushort)result;
855 /* run time endian detection */
856 if (csum != htons(csum)) /* little endian */
862 int CDPSendTrigger(void)
870 #if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \
871 defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM)
876 et = (Ethernet_t *)pkt;
878 /* NOTE: trigger sent not on any VLAN */
880 /* form ethernet header */
881 memcpy(et->et_dest, NetCDPAddr, 6);
882 memcpy(et->et_src, NetOurEther, 6);
884 pkt += ETHER_HDR_SIZE;
887 memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr));
888 pkt += sizeof(CDP_SNAP_hdr);
891 *pkt++ = 0x02; /* CDP version 2 */
892 *pkt++ = 180; /* TTL */
893 s = (volatile ushort *)pkt;
895 *s++ = htons(0); /* checksum (0 for later calculation) */
898 #ifdef CONFIG_CDP_DEVICE_ID
899 *s++ = htons(CDP_DEVICE_ID_TLV);
900 *s++ = htons(CONFIG_CDP_DEVICE_ID);
901 memset(buf, 0, sizeof(buf));
902 sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%02X%02X%02X%02X%02X%02X",
903 NetOurEther[0] & 0xff, NetOurEther[1] & 0xff,
904 NetOurEther[2] & 0xff, NetOurEther[3] & 0xff,
905 NetOurEther[4] & 0xff, NetOurEther[5] & 0xff);
906 memcpy((uchar *)s, buf, 16);
910 #ifdef CONFIG_CDP_PORT_ID
911 *s++ = htons(CDP_PORT_ID_TLV);
912 memset(buf, 0, sizeof(buf));
913 sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index());
915 if (len & 1) /* make it even */
917 *s++ = htons(len + 4);
918 memcpy((uchar *)s, buf, len);
922 #ifdef CONFIG_CDP_CAPABILITIES
923 *s++ = htons(CDP_CAPABILITIES_TLV);
925 *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES);
929 #ifdef CONFIG_CDP_VERSION
930 *s++ = htons(CDP_VERSION_TLV);
931 memset(buf, 0, sizeof(buf));
932 strcpy(buf, CONFIG_CDP_VERSION);
934 if (len & 1) /* make it even */
936 *s++ = htons(len + 4);
937 memcpy((uchar *)s, buf, len);
941 #ifdef CONFIG_CDP_PLATFORM
942 *s++ = htons(CDP_PLATFORM_TLV);
943 memset(buf, 0, sizeof(buf));
944 strcpy(buf, CONFIG_CDP_PLATFORM);
946 if (len & 1) /* make it even */
948 *s++ = htons(len + 4);
949 memcpy((uchar *)s, buf, len);
953 #ifdef CONFIG_CDP_TRIGGER
954 *s++ = htons(CDP_TRIGGER_TLV);
956 *(ulong *)s = htonl(CONFIG_CDP_TRIGGER);
960 #ifdef CONFIG_CDP_POWER_CONSUMPTION
961 *s++ = htons(CDP_POWER_CONSUMPTION_TLV);
963 *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION);
966 /* length of ethernet packet */
967 len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE);
968 et->et_protlen = htons(len);
970 len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr);
971 chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len));
976 (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket);
986 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
991 /* if not OK try again */
995 NetState = NETLOOP_SUCCESS;
999 CDPDummyHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
1005 CDPHandler(const uchar * pkt, unsigned len)
1014 if (len < sizeof(CDP_SNAP_hdr) + 4)
1017 /* check for valid CDP SNAP header */
1018 if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0)
1021 pkt += sizeof(CDP_SNAP_hdr);
1022 len -= sizeof(CDP_SNAP_hdr);
1024 /* Version of CDP protocol must be >= 2 and TTL != 0 */
1025 if (pkt[0] < 0x02 || pkt[1] == 0)
1028 /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
1030 printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
1033 if (CDP_compute_csum(pkt, len) != 0)
1045 ss = (const ushort *)pkt;
1046 type = ntohs(ss[0]);
1047 tlen = ntohs(ss[1]);
1055 ss += 2; /* point ss to the data of the TLV */
1059 case CDP_DEVICE_ID_TLV:
1061 case CDP_ADDRESS_TLV:
1063 case CDP_PORT_ID_TLV:
1065 case CDP_CAPABILITIES_TLV:
1067 case CDP_VERSION_TLV:
1069 case CDP_PLATFORM_TLV:
1071 case CDP_NATIVE_VLAN_TLV:
1074 case CDP_APPLIANCE_VLAN_TLV:
1075 t = (const uchar *)ss;
1081 ss = (const ushort *)(t + 1);
1083 #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
1084 if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE)
1087 vlan = ntohs(*ss); /* XXX will this work; dunno */
1092 case CDP_TRIGGER_TLV:
1094 case CDP_POWER_CONSUMPTION_TLV:
1096 case CDP_SYSNAME_TLV:
1098 case CDP_SYSOBJECT_TLV:
1100 case CDP_MANAGEMENT_ADDRESS_TLV:
1105 CDPApplianceVLAN = vlan;
1106 CDPNativeVLAN = nvlan;
1112 printf("** CDP packet is too short\n");
1116 static void CDPStart(void)
1118 #if defined(CONFIG_NET_MULTI)
1119 printf ("Using %s device\n", eth_get_name());
1124 CDPNativeVLAN = htons(-1);
1125 CDPApplianceVLAN = htons(-1);
1127 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
1128 NetSetHandler (CDPDummyHandler);
1132 #endif /* CFG_CMD_CDP */
1136 NetReceive(volatile uchar * inpkt, int len)
1144 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1147 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
1150 printf("packet received\n");
1155 et = (Ethernet_t *)inpkt;
1157 /* too small packet? */
1158 if (len < ETHER_HDR_SIZE)
1161 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1162 /* keep track if packet is CDP */
1163 iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0;
1166 myvlanid = ntohs(NetOurVLAN);
1167 if (myvlanid == (ushort)-1)
1168 myvlanid = VLAN_NONE;
1169 mynvlanid = ntohs(NetOurNativeVLAN);
1170 if (mynvlanid == (ushort)-1)
1171 mynvlanid = VLAN_NONE;
1173 x = ntohs(et->et_protlen);
1176 printf("packet received\n");
1181 * Got a 802 packet. Check the other protocol field.
1183 x = ntohs(et->et_prot);
1185 ip = (IP_t *)(inpkt + E802_HDR_SIZE);
1186 len -= E802_HDR_SIZE;
1188 } else if (x != PROT_VLAN) { /* normal packet */
1189 ip = (IP_t *)(inpkt + ETHER_HDR_SIZE);
1190 len -= ETHER_HDR_SIZE;
1192 } else { /* VLAN packet */
1193 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et;
1196 printf("VLAN packet received\n");
1198 /* too small packet? */
1199 if (len < VLAN_ETHER_HDR_SIZE)
1202 /* if no VLAN active */
1203 if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
1204 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1210 cti = ntohs(vet->vet_tag);
1211 vlanid = cti & VLAN_IDMASK;
1212 x = ntohs(vet->vet_type);
1214 ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE);
1215 len -= VLAN_ETHER_HDR_SIZE;
1219 printf("Receive from protocol 0x%x\n", x);
1222 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1224 CDPHandler((uchar *)ip, len);
1229 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1230 if (vlanid == VLAN_NONE)
1231 vlanid = (mynvlanid & VLAN_IDMASK);
1233 if (vlanid != (myvlanid & VLAN_IDMASK))
1241 * We have to deal with two types of ARP packets:
1242 * - REQUEST packets will be answered by sending our
1243 * IP address - if we know it.
1244 * - REPLY packates are expected only after we asked
1245 * for the TFTP server's or the gateway's ethernet
1246 * address; so if we receive such a packet, we set
1247 * the server ethernet address
1253 if (len < ARP_HDR_SIZE) {
1254 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1257 if (ntohs(arp->ar_hrd) != ARP_ETHER) {
1260 if (ntohs(arp->ar_pro) != PROT_IP) {
1263 if (arp->ar_hln != 6) {
1266 if (arp->ar_pln != 4) {
1270 if (NetOurIP == 0) {
1274 if (NetReadIP(&arp->ar_data[16]) != NetOurIP) {
1278 switch (ntohs(arp->ar_op)) {
1279 case ARPOP_REQUEST: /* reply with our IP address */
1281 puts ("Got ARP REQUEST, return our IP\n");
1284 pkt += NetSetEther(pkt, et->et_src, PROT_ARP);
1285 arp->ar_op = htons(ARPOP_REPLY);
1286 memcpy (&arp->ar_data[10], &arp->ar_data[0], 6);
1287 NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]);
1288 memcpy (&arp->ar_data[ 0], NetOurEther, 6);
1289 NetCopyIP(&arp->ar_data[ 6], &NetOurIP);
1290 (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE);
1293 case ARPOP_REPLY: /* arp reply */
1294 /* are we waiting for a reply */
1295 if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC)
1298 printf("Got ARP REPLY, set server/gtwy eth addr (%02x:%02x:%02x:%02x:%02x:%02x)\n",
1299 arp->ar_data[0], arp->ar_data[1],
1300 arp->ar_data[2], arp->ar_data[3],
1301 arp->ar_data[4], arp->ar_data[5]);
1304 tmp = NetReadIP(&arp->ar_data[6]);
1306 /* matched waiting packet's address */
1307 if (tmp == NetArpWaitReplyIP) {
1311 /* save address for later use */
1312 memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6);
1314 #ifdef CONFIG_NETCONSOLE
1315 (*packetHandler)(0,0,0,0);
1317 /* modify header, and transmit it */
1318 memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6);
1319 (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize);
1321 /* no arp request pending now */
1322 NetArpWaitPacketIP = 0;
1323 NetArpWaitTxPacketSize = 0;
1324 NetArpWaitPacketMAC = NULL;
1330 printf("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op));
1338 puts ("Got RARP\n");
1341 if (len < ARP_HDR_SIZE) {
1342 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1346 if ((ntohs(arp->ar_op) != RARPOP_REPLY) ||
1347 (ntohs(arp->ar_hrd) != ARP_ETHER) ||
1348 (ntohs(arp->ar_pro) != PROT_IP) ||
1349 (arp->ar_hln != 6) || (arp->ar_pln != 4)) {
1351 puts ("invalid RARP header\n");
1353 NetCopyIP(&NetOurIP, &arp->ar_data[16]);
1354 if (NetServerIP == 0)
1355 NetCopyIP(&NetServerIP, &arp->ar_data[ 6]);
1356 memcpy (NetServerEther, &arp->ar_data[ 0], 6);
1358 (*packetHandler)(0,0,0,0);
1366 if (len < IP_HDR_SIZE) {
1367 debug ("len bad %d < %d\n", len, IP_HDR_SIZE);
1370 if (len < ntohs(ip->ip_len)) {
1371 printf("len bad %d < %d\n", len, ntohs(ip->ip_len));
1374 len = ntohs(ip->ip_len);
1376 printf("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff);
1378 if ((ip->ip_hl_v & 0xf0) != 0x40) {
1381 if (ip->ip_off & htons(0x1fff)) { /* Can't deal w/ fragments */
1384 if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) {
1385 puts ("checksum bad\n");
1388 tmp = NetReadIP(&ip->ip_dst);
1389 if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) {
1393 * watch for ICMP host redirects
1395 * There is no real handler code (yet). We just watch
1396 * for ICMP host redirect messages. In case anybody
1397 * sees these messages: please contact me
1398 * (wd@denx.de), or - even better - send me the
1399 * necessary fixes :-)
1401 * Note: in all cases where I have seen this so far
1402 * it was a problem with the router configuration,
1403 * for instance when a router was configured in the
1404 * BOOTP reply, but the TFTP server was on the same
1405 * subnet. So this is probably a warning that your
1406 * configuration might be wrong. But I'm not really
1407 * sure if there aren't any other situations.
1409 if (ip->ip_p == IPPROTO_ICMP) {
1410 ICMP_t *icmph = (ICMP_t *)&(ip->udp_src);
1412 switch (icmph->type) {
1414 if (icmph->code != ICMP_REDIR_HOST)
1416 puts (" ICMP Host Redirect to ");
1417 print_IPaddr(icmph->un.gateway);
1420 #if (CONFIG_COMMANDS & CFG_CMD_PING)
1421 case ICMP_ECHO_REPLY:
1423 * IP header OK. Pass the packet to the current handler.
1425 /* XXX point to ip packet */
1426 (*packetHandler)((uchar *)ip, 0, 0, 0);
1432 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1436 #ifdef CONFIG_UDP_CHECKSUM
1437 if (ip->udp_xsum != 0) {
1443 xsum += (ntohs(ip->udp_len));
1444 xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff;
1445 xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff;
1446 xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff;
1447 xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff;
1449 sumlen = ntohs(ip->udp_len);
1450 sumptr = (ushort *) &(ip->udp_src);
1452 while (sumlen > 1) {
1455 sumdata = *sumptr++;
1456 xsum += ntohs(sumdata);
1462 sumdata = *(unsigned char *) sumptr;
1463 sumdata = (sumdata << 8) & 0xff00;
1466 while ((xsum >> 16) != 0) {
1467 xsum = (xsum & 0x0000ffff) + ((xsum >> 16) & 0x0000ffff);
1469 if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
1470 printf(" UDP wrong checksum %08x %08x\n", xsum, ntohs(ip->udp_xsum));
1476 #ifdef CONFIG_NETCONSOLE
1477 nc_input_packet((uchar *)ip +IP_HDR_SIZE,
1480 ntohs(ip->udp_len) - 8);
1483 * IP header OK. Pass the packet to the current handler.
1485 (*packetHandler)((uchar *)ip +IP_HDR_SIZE,
1488 ntohs(ip->udp_len) - 8);
1494 /**********************************************************************/
1496 static int net_check_prereq (proto_t protocol)
1500 #if (CONFIG_COMMANDS & CFG_CMD_PING)
1502 if (NetPingIP == 0) {
1503 puts ("*** ERROR: ping address not given\n");
1508 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
1510 if (NetNtpServerIP == 0) {
1511 puts ("*** ERROR: NTP server address not given\n");
1516 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
1521 if (NetServerIP == 0) {
1522 puts ("*** ERROR: `serverip' not set\n");
1525 #if (CONFIG_COMMANDS & (CFG_CMD_PING | CFG_CMD_SNTP))
1529 if (NetOurIP == 0) {
1530 puts ("*** ERROR: `ipaddr' not set\n");
1539 if (memcmp (NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
1540 #ifdef CONFIG_NET_MULTI
1541 extern int eth_get_dev_index (void);
1542 int num = eth_get_dev_index ();
1546 puts ("*** ERROR: No ethernet found.\n");
1549 puts ("*** ERROR: `ethaddr' not set\n");
1552 printf ("*** ERROR: `eth%daddr' not set\n",
1560 puts ("*** ERROR: `ethaddr' not set\n");
1568 return (0); /* OK */
1570 /**********************************************************************/
1573 NetCksumOk(uchar * ptr, int len)
1575 return !((NetCksum(ptr, len) + 1) & 0xfffe);
1580 NetCksum(uchar * ptr, int len)
1583 ushort *p = (ushort *)ptr;
1588 xsum = (xsum & 0xffff) + (xsum >> 16);
1589 xsum = (xsum & 0xffff) + (xsum >> 16);
1590 return (xsum & 0xffff);
1598 myvlanid = ntohs(NetOurVLAN);
1599 if (myvlanid == (ushort)-1)
1600 myvlanid = VLAN_NONE;
1602 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE;
1606 NetSetEther(volatile uchar * xet, uchar * addr, uint prot)
1608 Ethernet_t *et = (Ethernet_t *)xet;
1611 myvlanid = ntohs(NetOurVLAN);
1612 if (myvlanid == (ushort)-1)
1613 myvlanid = VLAN_NONE;
1615 memcpy (et->et_dest, addr, 6);
1616 memcpy (et->et_src, NetOurEther, 6);
1617 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
1618 et->et_protlen = htons(prot);
1619 return ETHER_HDR_SIZE;
1621 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet;
1623 vet->vet_vlan_type = htons(PROT_VLAN);
1624 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1625 vet->vet_type = htons(prot);
1626 return VLAN_ETHER_HDR_SIZE;
1631 NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
1633 volatile IP_t *ip = (IP_t *)xip;
1636 * If the data is an odd number of bytes, zero the
1637 * byte after the last byte so that the checksum
1641 xip[IP_HDR_SIZE + len] = 0;
1644 * Construct an IP and UDP header.
1645 * (need to set no fragment bit - XXX)
1647 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
1649 ip->ip_len = htons(IP_HDR_SIZE + len);
1650 ip->ip_id = htons(NetIPID++);
1651 ip->ip_off = htons(0x4000); /* No fragmentation */
1653 ip->ip_p = 17; /* UDP */
1655 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
1656 NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */
1657 ip->udp_src = htons(sport);
1658 ip->udp_dst = htons(dport);
1659 ip->udp_len = htons(8 + len);
1661 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
1664 void copy_filename (char *dst, char *src, int size)
1666 if (*src && (*src == '"')) {
1671 while ((--size > 0) && *src && (*src != '"')) {
1677 #endif /* CFG_CMD_NET */
1679 void ip_to_string (IPaddr_t x, char *s)
1682 sprintf (s, "%d.%d.%d.%d",
1683 (int) ((x >> 24) & 0xff),
1684 (int) ((x >> 16) & 0xff),
1685 (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff)
1689 IPaddr_t string_to_ip(char *s)
1698 for (addr=0, i=0; i<4; ++i) {
1699 ulong val = s ? simple_strtoul(s, &e, 10) : 0;
1701 addr |= (val & 0xFF);
1707 return (htonl(addr));
1710 void VLAN_to_string(ushort x, char *s)
1714 if (x == (ushort)-1)
1720 sprintf(s, "%d", x & VLAN_IDMASK);
1723 ushort string_to_VLAN(char *s)
1728 return htons(VLAN_NONE);
1730 if (*s < '0' || *s > '9')
1733 id = (ushort)simple_strtoul(s, NULL, 10);
1738 void print_IPaddr (IPaddr_t x)
1742 ip_to_string (x, tmp);
1747 IPaddr_t getenv_IPaddr (char *var)
1749 return (string_to_ip(getenv(var)));
1752 ushort getenv_VLAN(char *var)
1754 return (string_to_VLAN(getenv(var)));