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(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(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 /* * XXX CISCO SUCKS big time! (and blows too) */
833 result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff);
836 result = (result & 0xFFFF) + (result >> 16);
839 result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
842 /* add up 16-bit and 17-bit words for 17+c bits */
843 result = (result & 0xffff) + (result >> 16);
844 /* add up 16-bit and 2-bit for 16+c bit */
845 result = (result & 0xffff) + (result >> 16);
847 result = (result & 0xffff) + (result >> 16);
850 csum = ~(ushort)result;
852 /* run time endian detection */
853 if (csum != htons(csum)) /* little endian */
859 int CDPSendTrigger(void)
867 #if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \
868 defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM)
873 et = (Ethernet_t *)pkt;
875 /* NOTE: trigger sent not on any VLAN */
877 /* form ethernet header */
878 memcpy(et->et_dest, NetCDPAddr, 6);
879 memcpy(et->et_src, NetOurEther, 6);
881 pkt += ETHER_HDR_SIZE;
884 memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr));
885 pkt += sizeof(CDP_SNAP_hdr);
888 *pkt++ = 0x02; /* CDP version 2 */
889 *pkt++ = 180; /* TTL */
890 s = (volatile ushort *)pkt;
892 *s++ = htons(0); /* checksum (0 for later calculation) */
895 #ifdef CONFIG_CDP_DEVICE_ID
896 *s++ = htons(CDP_DEVICE_ID_TLV);
897 *s++ = htons(CONFIG_CDP_DEVICE_ID);
898 memset(buf, 0, sizeof(buf));
899 sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%02X%02X%02X%02X%02X%02X",
900 NetOurEther[0] & 0xff, NetOurEther[1] & 0xff,
901 NetOurEther[2] & 0xff, NetOurEther[3] & 0xff,
902 NetOurEther[4] & 0xff, NetOurEther[5] & 0xff);
903 memcpy((uchar *)s, buf, 16);
907 #ifdef CONFIG_CDP_PORT_ID
908 *s++ = htons(CDP_PORT_ID_TLV);
909 memset(buf, 0, sizeof(buf));
910 sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index());
912 if (len & 1) /* make it even */
914 *s++ = htons(len + 4);
915 memcpy((uchar *)s, buf, len);
919 #ifdef CONFIG_CDP_CAPABILITIES
920 *s++ = htons(CDP_CAPABILITIES_TLV);
922 *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES);
926 #ifdef CONFIG_CDP_VERSION
927 *s++ = htons(CDP_VERSION_TLV);
928 memset(buf, 0, sizeof(buf));
929 strcpy(buf, CONFIG_CDP_VERSION);
931 if (len & 1) /* make it even */
933 *s++ = htons(len + 4);
934 memcpy((uchar *)s, buf, len);
938 #ifdef CONFIG_CDP_PLATFORM
939 *s++ = htons(CDP_PLATFORM_TLV);
940 memset(buf, 0, sizeof(buf));
941 strcpy(buf, CONFIG_CDP_PLATFORM);
943 if (len & 1) /* make it even */
945 *s++ = htons(len + 4);
946 memcpy((uchar *)s, buf, len);
950 #ifdef CONFIG_CDP_TRIGGER
951 *s++ = htons(CDP_TRIGGER_TLV);
953 *(ulong *)s = htonl(CONFIG_CDP_TRIGGER);
957 #ifdef CONFIG_CDP_POWER_CONSUMPTION
958 *s++ = htons(CDP_POWER_CONSUMPTION_TLV);
960 *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION);
963 /* length of ethernet packet */
964 len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE);
965 et->et_protlen = htons(len);
967 len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr);
968 chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len));
973 (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket);
983 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
988 /* if not OK try again */
992 NetState = NETLOOP_SUCCESS;
996 CDPDummyHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
1002 CDPHandler(const uchar * pkt, unsigned len)
1011 if (len < sizeof(CDP_SNAP_hdr) + 4)
1014 /* check for valid CDP SNAP header */
1015 if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0)
1018 pkt += sizeof(CDP_SNAP_hdr);
1019 len -= sizeof(CDP_SNAP_hdr);
1021 /* Version of CDP protocol must be >= 2 and TTL != 0 */
1022 if (pkt[0] < 0x02 || pkt[1] == 0)
1025 /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
1027 printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
1030 if (CDP_compute_csum(pkt, len) != 0)
1042 ss = (const ushort *)pkt;
1043 type = ntohs(ss[0]);
1044 tlen = ntohs(ss[1]);
1052 ss += 2; /* point ss to the data of the TLV */
1056 case CDP_DEVICE_ID_TLV:
1058 case CDP_ADDRESS_TLV:
1060 case CDP_PORT_ID_TLV:
1062 case CDP_CAPABILITIES_TLV:
1064 case CDP_VERSION_TLV:
1066 case CDP_PLATFORM_TLV:
1068 case CDP_NATIVE_VLAN_TLV:
1071 case CDP_APPLIANCE_VLAN_TLV:
1072 t = (const uchar *)ss;
1078 ss = (const ushort *)(t + 1);
1080 #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
1081 if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE)
1084 vlan = ntohs(*ss); /* XXX will this work; dunno */
1089 case CDP_TRIGGER_TLV:
1091 case CDP_POWER_CONSUMPTION_TLV:
1093 case CDP_SYSNAME_TLV:
1095 case CDP_SYSOBJECT_TLV:
1097 case CDP_MANAGEMENT_ADDRESS_TLV:
1102 CDPApplianceVLAN = vlan;
1103 CDPNativeVLAN = nvlan;
1109 printf("** CDP packet is too short\n");
1113 static void CDPStart(void)
1115 #if defined(CONFIG_NET_MULTI)
1116 printf ("Using %s device\n", eth_get_name());
1121 CDPNativeVLAN = htons(-1);
1122 CDPApplianceVLAN = htons(-1);
1124 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
1125 NetSetHandler (CDPDummyHandler);
1129 #endif /* CFG_CMD_CDP */
1133 NetReceive(volatile uchar * inpkt, int len)
1141 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1144 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
1147 printf("packet received\n");
1152 et = (Ethernet_t *)inpkt;
1154 /* too small packet? */
1155 if (len < ETHER_HDR_SIZE)
1158 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1159 /* keep track if packet is CDP */
1160 iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0;
1163 myvlanid = ntohs(NetOurVLAN);
1164 if (myvlanid == (ushort)-1)
1165 myvlanid = VLAN_NONE;
1166 mynvlanid = ntohs(NetOurNativeVLAN);
1167 if (mynvlanid == (ushort)-1)
1168 mynvlanid = VLAN_NONE;
1170 x = ntohs(et->et_protlen);
1173 printf("packet received\n");
1178 * Got a 802 packet. Check the other protocol field.
1180 x = ntohs(et->et_prot);
1182 ip = (IP_t *)(inpkt + E802_HDR_SIZE);
1183 len -= E802_HDR_SIZE;
1185 } else if (x != PROT_VLAN) { /* normal packet */
1186 ip = (IP_t *)(inpkt + ETHER_HDR_SIZE);
1187 len -= ETHER_HDR_SIZE;
1189 } else { /* VLAN packet */
1190 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et;
1193 printf("VLAN packet received\n");
1195 /* too small packet? */
1196 if (len < VLAN_ETHER_HDR_SIZE)
1199 /* if no VLAN active */
1200 if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
1201 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1207 cti = ntohs(vet->vet_tag);
1208 vlanid = cti & VLAN_IDMASK;
1209 x = ntohs(vet->vet_type);
1211 ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE);
1212 len -= VLAN_ETHER_HDR_SIZE;
1216 printf("Receive from protocol 0x%x\n", x);
1219 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1221 CDPHandler((uchar *)ip, len);
1226 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1227 if (vlanid == VLAN_NONE)
1228 vlanid = (mynvlanid & VLAN_IDMASK);
1230 if (vlanid != (myvlanid & VLAN_IDMASK))
1238 * We have to deal with two types of ARP packets:
1239 * - REQUEST packets will be answered by sending our
1240 * IP address - if we know it.
1241 * - REPLY packates are expected only after we asked
1242 * for the TFTP server's or the gateway's ethernet
1243 * address; so if we receive such a packet, we set
1244 * the server ethernet address
1250 if (len < ARP_HDR_SIZE) {
1251 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1254 if (ntohs(arp->ar_hrd) != ARP_ETHER) {
1257 if (ntohs(arp->ar_pro) != PROT_IP) {
1260 if (arp->ar_hln != 6) {
1263 if (arp->ar_pln != 4) {
1267 if (NetOurIP == 0) {
1271 if (NetReadIP(&arp->ar_data[16]) != NetOurIP) {
1275 switch (ntohs(arp->ar_op)) {
1276 case ARPOP_REQUEST: /* reply with our IP address */
1278 puts ("Got ARP REQUEST, return our IP\n");
1281 pkt += NetSetEther(pkt, et->et_src, PROT_ARP);
1282 arp->ar_op = htons(ARPOP_REPLY);
1283 memcpy (&arp->ar_data[10], &arp->ar_data[0], 6);
1284 NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]);
1285 memcpy (&arp->ar_data[ 0], NetOurEther, 6);
1286 NetCopyIP(&arp->ar_data[ 6], &NetOurIP);
1287 (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE);
1290 case ARPOP_REPLY: /* arp reply */
1291 /* are we waiting for a reply */
1292 if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC)
1295 printf("Got ARP REPLY, set server/gtwy eth addr (%02x:%02x:%02x:%02x:%02x:%02x)\n",
1296 arp->ar_data[0], arp->ar_data[1],
1297 arp->ar_data[2], arp->ar_data[3],
1298 arp->ar_data[4], arp->ar_data[5]);
1301 tmp = NetReadIP(&arp->ar_data[6]);
1303 /* matched waiting packet's address */
1304 if (tmp == NetArpWaitReplyIP) {
1308 /* save address for later use */
1309 memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6);
1311 #ifdef CONFIG_NETCONSOLE
1312 (*packetHandler)(0,0,0,0);
1314 /* modify header, and transmit it */
1315 memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6);
1316 (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize);
1318 /* no arp request pending now */
1319 NetArpWaitPacketIP = 0;
1320 NetArpWaitTxPacketSize = 0;
1321 NetArpWaitPacketMAC = NULL;
1327 printf("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op));
1335 puts ("Got RARP\n");
1338 if (len < ARP_HDR_SIZE) {
1339 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1343 if ((ntohs(arp->ar_op) != RARPOP_REPLY) ||
1344 (ntohs(arp->ar_hrd) != ARP_ETHER) ||
1345 (ntohs(arp->ar_pro) != PROT_IP) ||
1346 (arp->ar_hln != 6) || (arp->ar_pln != 4)) {
1348 puts ("invalid RARP header\n");
1350 NetCopyIP(&NetOurIP, &arp->ar_data[16]);
1351 if (NetServerIP == 0)
1352 NetCopyIP(&NetServerIP, &arp->ar_data[ 6]);
1353 memcpy (NetServerEther, &arp->ar_data[ 0], 6);
1355 (*packetHandler)(0,0,0,0);
1363 if (len < IP_HDR_SIZE) {
1364 debug ("len bad %d < %d\n", len, IP_HDR_SIZE);
1367 if (len < ntohs(ip->ip_len)) {
1368 printf("len bad %d < %d\n", len, ntohs(ip->ip_len));
1371 len = ntohs(ip->ip_len);
1373 printf("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff);
1375 if ((ip->ip_hl_v & 0xf0) != 0x40) {
1378 if (ip->ip_off & htons(0x1fff)) { /* Can't deal w/ fragments */
1381 if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) {
1382 puts ("checksum bad\n");
1385 tmp = NetReadIP(&ip->ip_dst);
1386 if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) {
1390 * watch for ICMP host redirects
1392 * There is no real handler code (yet). We just watch
1393 * for ICMP host redirect messages. In case anybody
1394 * sees these messages: please contact me
1395 * (wd@denx.de), or - even better - send me the
1396 * necessary fixes :-)
1398 * Note: in all cases where I have seen this so far
1399 * it was a problem with the router configuration,
1400 * for instance when a router was configured in the
1401 * BOOTP reply, but the TFTP server was on the same
1402 * subnet. So this is probably a warning that your
1403 * configuration might be wrong. But I'm not really
1404 * sure if there aren't any other situations.
1406 if (ip->ip_p == IPPROTO_ICMP) {
1407 ICMP_t *icmph = (ICMP_t *)&(ip->udp_src);
1409 switch (icmph->type) {
1411 if (icmph->code != ICMP_REDIR_HOST)
1413 puts (" ICMP Host Redirect to ");
1414 print_IPaddr(icmph->un.gateway);
1417 #if (CONFIG_COMMANDS & CFG_CMD_PING)
1418 case ICMP_ECHO_REPLY:
1420 * IP header OK. Pass the packet to the current handler.
1422 /* XXX point to ip packet */
1423 (*packetHandler)((uchar *)ip, 0, 0, 0);
1429 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1433 #ifdef CONFIG_UDP_CHECKSUM
1434 if (ip->udp_xsum != 0) {
1440 xsum += (ntohs(ip->udp_len));
1441 xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff;
1442 xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff;
1443 xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff;
1444 xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff;
1446 sumlen = ntohs(ip->udp_len);
1447 sumptr = (ushort *) &(ip->udp_src);
1449 while (sumlen > 1) {
1452 sumdata = *sumptr++;
1453 xsum += ntohs(sumdata);
1459 sumdata = *(unsigned char *) sumptr;
1460 sumdata = (sumdata << 8) & 0xff00;
1463 while ((xsum >> 16) != 0) {
1464 xsum = (xsum & 0x0000ffff) + ((xsum >> 16) & 0x0000ffff);
1466 if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
1467 printf(" UDP wrong checksum %08x %08x\n", xsum, ntohs(ip->udp_xsum));
1473 #ifdef CONFIG_NETCONSOLE
1474 nc_input_packet((uchar *)ip +IP_HDR_SIZE,
1477 ntohs(ip->udp_len) - 8);
1480 * IP header OK. Pass the packet to the current handler.
1482 (*packetHandler)((uchar *)ip +IP_HDR_SIZE,
1485 ntohs(ip->udp_len) - 8);
1491 /**********************************************************************/
1493 static int net_check_prereq (proto_t protocol)
1497 #if (CONFIG_COMMANDS & CFG_CMD_PING)
1499 if (NetPingIP == 0) {
1500 puts ("*** ERROR: ping address not given\n");
1505 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
1507 if (NetNtpServerIP == 0) {
1508 puts ("*** ERROR: NTP server address not given\n");
1513 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
1518 if (NetServerIP == 0) {
1519 puts ("*** ERROR: `serverip' not set\n");
1522 #if (CONFIG_COMMANDS & (CFG_CMD_PING | CFG_CMD_SNTP))
1526 if (NetOurIP == 0) {
1527 puts ("*** ERROR: `ipaddr' not set\n");
1536 if (memcmp (NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
1537 #ifdef CONFIG_NET_MULTI
1538 extern int eth_get_dev_index (void);
1539 int num = eth_get_dev_index ();
1543 puts ("*** ERROR: No ethernet found.\n");
1546 puts ("*** ERROR: `ethaddr' not set\n");
1549 printf ("*** ERROR: `eth%daddr' not set\n",
1557 puts ("*** ERROR: `ethaddr' not set\n");
1565 return (0); /* OK */
1567 /**********************************************************************/
1570 NetCksumOk(uchar * ptr, int len)
1572 return !((NetCksum(ptr, len) + 1) & 0xfffe);
1577 NetCksum(uchar * ptr, int len)
1580 ushort *p = (ushort *)ptr;
1585 xsum = (xsum & 0xffff) + (xsum >> 16);
1586 xsum = (xsum & 0xffff) + (xsum >> 16);
1587 return (xsum & 0xffff);
1595 myvlanid = ntohs(NetOurVLAN);
1596 if (myvlanid == (ushort)-1)
1597 myvlanid = VLAN_NONE;
1599 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE;
1603 NetSetEther(volatile uchar * xet, uchar * addr, uint prot)
1605 Ethernet_t *et = (Ethernet_t *)xet;
1608 myvlanid = ntohs(NetOurVLAN);
1609 if (myvlanid == (ushort)-1)
1610 myvlanid = VLAN_NONE;
1612 memcpy (et->et_dest, addr, 6);
1613 memcpy (et->et_src, NetOurEther, 6);
1614 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
1615 et->et_protlen = htons(prot);
1616 return ETHER_HDR_SIZE;
1618 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet;
1620 vet->vet_vlan_type = htons(PROT_VLAN);
1621 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1622 vet->vet_type = htons(prot);
1623 return VLAN_ETHER_HDR_SIZE;
1628 NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
1630 volatile IP_t *ip = (IP_t *)xip;
1633 * If the data is an odd number of bytes, zero the
1634 * byte after the last byte so that the checksum
1638 xip[IP_HDR_SIZE + len] = 0;
1641 * Construct an IP and UDP header.
1642 * (need to set no fragment bit - XXX)
1644 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
1646 ip->ip_len = htons(IP_HDR_SIZE + len);
1647 ip->ip_id = htons(NetIPID++);
1648 ip->ip_off = htons(0x4000); /* No fragmentation */
1650 ip->ip_p = 17; /* UDP */
1652 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
1653 NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */
1654 ip->udp_src = htons(sport);
1655 ip->udp_dst = htons(dport);
1656 ip->udp_len = htons(8 + len);
1658 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
1661 void copy_filename (char *dst, char *src, int size)
1663 if (*src && (*src == '"')) {
1668 while ((--size > 0) && *src && (*src != '"')) {
1674 #endif /* CFG_CMD_NET */
1676 void ip_to_string (IPaddr_t x, char *s)
1679 sprintf (s, "%d.%d.%d.%d",
1680 (int) ((x >> 24) & 0xff),
1681 (int) ((x >> 16) & 0xff),
1682 (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff)
1686 IPaddr_t string_to_ip(char *s)
1695 for (addr=0, i=0; i<4; ++i) {
1696 ulong val = s ? simple_strtoul(s, &e, 10) : 0;
1698 addr |= (val & 0xFF);
1704 return (htonl(addr));
1707 void VLAN_to_string(ushort x, char *s)
1711 if (x == (ushort)-1)
1717 sprintf(s, "%d", x & VLAN_IDMASK);
1720 ushort string_to_VLAN(char *s)
1725 return htons(VLAN_NONE);
1727 if (*s < '0' || *s > '9')
1730 id = (ushort)simple_strtoul(s, NULL, 10);
1735 void print_IPaddr (IPaddr_t x)
1739 ip_to_string (x, tmp);
1744 IPaddr_t getenv_IPaddr (char *var)
1746 return (string_to_ip(getenv(var)));
1749 ushort getenv_VLAN(char *var)
1751 return (string_to_VLAN(getenv(var)));