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 defined(CONFIG_CMD_SNTP)
93 #if defined(CONFIG_CMD_NET)
95 DECLARE_GLOBAL_DATA_PTR;
97 #define ARP_TIMEOUT 5 /* Seconds before trying ARP again */
98 #ifndef CONFIG_NET_RETRY_COUNT
99 # define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */
101 # define ARP_TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
108 /** BOOTP EXTENTIONS **/
110 IPaddr_t NetOurSubnetMask=0; /* Our subnet mask (0=unknown) */
111 IPaddr_t NetOurGatewayIP=0; /* Our gateways IP address */
112 IPaddr_t NetOurDNSIP=0; /* Our DNS IP address */
113 #if defined(CONFIG_BOOTP_DNS2)
114 IPaddr_t NetOurDNS2IP=0; /* Our 2nd DNS IP address */
116 char NetOurNISDomain[32]={0,}; /* Our NIS domain */
117 char NetOurHostName[32]={0,}; /* Our hostname */
118 char NetOurRootPath[64]={0,}; /* Our bootpath */
119 ushort NetBootFileSize=0; /* Our bootfile size in blocks */
121 #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */
125 /** END OF BOOTP EXTENTIONS **/
127 ulong NetBootFileXferSize; /* The actual transferred size of the bootfile (in bytes) */
128 uchar NetOurEther[6]; /* Our ethernet address */
129 uchar NetServerEther[6] = /* Boot server enet address */
130 { 0, 0, 0, 0, 0, 0 };
131 IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
132 IPaddr_t NetServerIP; /* Our IP addr (0 = unknown) */
133 volatile uchar *NetRxPkt; /* Current receive packet */
134 int NetRxPktLen; /* Current rx packet length */
135 unsigned NetIPID; /* IP packet ID */
136 uchar NetBcastAddr[6] = /* Ethernet bcast address */
137 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
138 uchar NetEtherNullAddr[6] =
139 { 0, 0, 0, 0, 0, 0 };
140 #if defined(CONFIG_CMD_CDP)
141 uchar NetCDPAddr[6] = /* Ethernet bcast address */
142 { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
144 int NetState; /* Network loop state */
145 #ifdef CONFIG_NET_MULTI
146 int NetRestartWrap = 0; /* Tried all network devices */
147 static int NetRestarted = 0; /* Network loop restarted */
148 static int NetDevExists = 0; /* At least one device configured */
151 /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
152 ushort NetOurVLAN = 0xFFFF; /* default is without VLAN */
153 ushort NetOurNativeVLAN = 0xFFFF; /* ditto */
155 char BootFile[128]; /* Boot File name */
157 #if defined(CONFIG_CMD_PING)
158 IPaddr_t NetPingIP; /* the ip address to ping */
160 static void PingStart(void);
163 #if defined(CONFIG_CMD_CDP)
164 static void CDPStart(void);
167 #if defined(CONFIG_CMD_SNTP)
168 IPaddr_t NetNtpServerIP; /* NTP server IP address */
169 int NetTimeOffset=0; /* offset time from UTC */
172 #ifdef CONFIG_NETCONSOLE
174 int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len);
177 volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
179 volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */
181 static rxhand_f *packetHandler; /* Current RX packet handler */
182 static thand_f *timeHandler; /* Current timeout handler */
183 static ulong timeStart; /* Time base value */
184 static ulong timeDelta; /* Current timeout value */
185 volatile uchar *NetTxPacket = 0; /* THE transmit packet */
187 static int net_check_prereq (proto_t protocol);
189 /**********************************************************************/
191 IPaddr_t NetArpWaitPacketIP;
192 IPaddr_t NetArpWaitReplyIP;
193 uchar *NetArpWaitPacketMAC; /* MAC address of waiting packet's destination */
194 uchar *NetArpWaitTxPacket; /* THE transmit packet */
195 int NetArpWaitTxPacketSize;
196 uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
197 ulong NetArpWaitTimerStart;
200 void ArpRequest (void)
207 printf ("ARP broadcast %d\n", NetArpWaitTry);
211 pkt += NetSetEther (pkt, NetBcastAddr, PROT_ARP);
215 arp->ar_hrd = htons (ARP_ETHER);
216 arp->ar_pro = htons (PROT_IP);
219 arp->ar_op = htons (ARPOP_REQUEST);
221 memcpy (&arp->ar_data[0], NetOurEther, 6); /* source ET addr */
222 NetWriteIP ((uchar *) & arp->ar_data[6], NetOurIP); /* source IP addr */
223 for (i = 10; i < 16; ++i) {
224 arp->ar_data[i] = 0; /* dest ET addr = 0 */
227 if ((NetArpWaitPacketIP & NetOurSubnetMask) !=
228 (NetOurIP & NetOurSubnetMask)) {
229 if (NetOurGatewayIP == 0) {
230 puts ("## Warning: gatewayip needed but not set\n");
231 NetArpWaitReplyIP = NetArpWaitPacketIP;
233 NetArpWaitReplyIP = NetOurGatewayIP;
236 NetArpWaitReplyIP = NetArpWaitPacketIP;
239 NetWriteIP ((uchar *) & arp->ar_data[16], NetArpWaitReplyIP);
240 (void) eth_send (NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
243 void ArpTimeoutCheck(void)
247 if (!NetArpWaitPacketIP)
252 /* check for arp timeout */
253 if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT * CFG_HZ) {
256 if (NetArpWaitTry >= ARP_TIMEOUT_COUNT) {
257 puts ("\nARP Retry count exceeded; starting again\n");
261 NetArpWaitTimerStart = t;
267 /**********************************************************************/
269 * Main network processing loop.
273 NetLoop(proto_t protocol)
277 #ifdef CONFIG_NET_MULTI
282 /* XXX problem with bss workaround */
283 NetArpWaitPacketMAC = NULL;
284 NetArpWaitTxPacket = NULL;
285 NetArpWaitPacketIP = 0;
286 NetArpWaitReplyIP = 0;
287 NetArpWaitTxPacket = NULL;
293 * Setup packet buffers, aligned correctly.
295 NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
296 NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
297 for (i = 0; i < PKTBUFSRX; i++) {
298 NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN;
302 if (!NetArpWaitTxPacket) {
303 NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1);
304 NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN;
305 NetArpWaitTxPacketSize = 0;
309 #ifdef CONFIG_NET_MULTI
312 if (eth_init(bd) < 0) {
318 #ifdef CONFIG_NET_MULTI
319 memcpy (NetOurEther, eth_get_dev()->enetaddr, 6);
321 memcpy (NetOurEther, bd->bi_enetaddr, 6);
324 NetState = NETLOOP_CONTINUE;
327 * Start the ball rolling with the given start function. From
328 * here on, this code is a state machine driven by received
329 * packets and timer events.
333 #if defined(CONFIG_CMD_NFS)
336 #if defined(CONFIG_CMD_PING)
339 #if defined(CONFIG_CMD_SNTP)
344 NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
345 NetOurGatewayIP = getenv_IPaddr ("gatewayip");
346 NetOurSubnetMask= getenv_IPaddr ("netmask");
347 NetOurVLAN = getenv_VLAN("vlan");
348 NetOurNativeVLAN = getenv_VLAN("nvlan");
351 #if defined(CONFIG_CMD_NFS)
356 NetServerIP = getenv_IPaddr ("serverip");
358 #if defined(CONFIG_CMD_PING)
363 #if defined(CONFIG_CMD_SNTP)
376 * initialize our IP addr to 0 in order to accept ANY
377 * IP addr assigned to us by the BOOTP / RARP server
380 NetServerIP = getenv_IPaddr ("serverip");
381 NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
382 NetOurNativeVLAN = getenv_VLAN("nvlan");
384 NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
385 NetOurNativeVLAN = getenv_VLAN("nvlan");
391 switch (net_check_prereq (protocol)) {
393 /* network not configured */
397 #ifdef CONFIG_NET_MULTI
399 /* network device not configured */
401 #endif /* CONFIG_NET_MULTI */
404 #ifdef CONFIG_NET_MULTI
409 /* always use ARP to get server ethernet address */
413 #if defined(CONFIG_CMD_DHCP)
415 /* Start with a clean slate... */
418 NetServerIP = getenv_IPaddr ("serverip");
419 DhcpRequest(); /* Basically same as BOOTP */
432 #if defined(CONFIG_CMD_PING)
437 #if defined(CONFIG_CMD_NFS)
442 #if defined(CONFIG_CMD_CDP)
447 #ifdef CONFIG_NETCONSOLE
452 #if defined(CONFIG_CMD_SNTP)
461 NetBootFileXferSize = 0;
465 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
466 #if defined(CFG_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
468 * Echo the inverted link state to the fault LED.
470 if(miiphy_link(eth_get_dev()->name, CFG_FAULT_MII_ADDR)) {
471 status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
473 status_led_set (STATUS_LED_RED, STATUS_LED_ON);
475 #endif /* CFG_FAULT_ECHO_LINK_DOWN, ... */
476 #endif /* CONFIG_MII, ... */
479 * Main packet reception loop. Loop receiving packets until
480 * someone sets `NetState' to a state that terminates.
484 #ifdef CONFIG_SHOW_ACTIVITY
486 extern void show_activity(int arg);
491 * Check the ethernet for a new packet. The ethernet
492 * receive routine will process it.
497 * Abort if ctrl-c was pressed.
508 * Check for a timeout, and run the timeout handler
511 if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) {
514 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
515 # if defined(CFG_FAULT_ECHO_LINK_DOWN) && \
516 defined(CONFIG_STATUS_LED) && \
517 defined(STATUS_LED_RED)
519 * Echo the inverted link state to the fault LED.
521 if(miiphy_link(eth_get_dev()->name, CFG_FAULT_MII_ADDR)) {
522 status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
524 status_led_set (STATUS_LED_RED, STATUS_LED_ON);
526 # endif /* CFG_FAULT_ECHO_LINK_DOWN, ... */
527 #endif /* CONFIG_MII, ... */
529 timeHandler = (thand_f *)0;
536 case NETLOOP_RESTART:
537 #ifdef CONFIG_NET_MULTI
542 case NETLOOP_SUCCESS:
543 if (NetBootFileXferSize > 0) {
545 printf("Bytes transferred = %ld (%lx hex)\n",
547 NetBootFileXferSize);
548 sprintf(buf, "%lX", NetBootFileXferSize);
549 setenv("filesize", buf);
551 sprintf(buf, "%lX", (unsigned long)load_addr);
552 setenv("fileaddr", buf);
555 return NetBootFileXferSize;
563 /**********************************************************************/
566 startAgainTimeout(void)
568 NetState = NETLOOP_RESTART;
572 startAgainHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
574 /* Totally ignore the packet */
577 void NetStartAgain (void)
580 int noretry = 0, once = 0;
582 if ((nretry = getenv ("netretry")) != NULL) {
583 noretry = (strcmp (nretry, "no") == 0);
584 once = (strcmp (nretry, "once") == 0);
588 NetState = NETLOOP_FAIL;
591 #ifndef CONFIG_NET_MULTI
592 NetSetTimeout (10 * CFG_HZ, startAgainTimeout);
593 NetSetHandler (startAgainHandler);
594 #else /* !CONFIG_NET_MULTI*/
596 eth_try_another (!NetRestarted);
598 if (NetRestartWrap) {
600 if (NetDevExists && !once) {
601 NetSetTimeout (10 * CFG_HZ, startAgainTimeout);
602 NetSetHandler (startAgainHandler);
604 NetState = NETLOOP_FAIL;
607 NetState = NETLOOP_RESTART;
609 #endif /* CONFIG_NET_MULTI */
612 /**********************************************************************/
618 NetSetHandler(rxhand_f * f)
625 NetSetTimeout(ulong iv, thand_f * f)
628 timeHandler = (thand_f *)0;
631 timeStart = get_timer(0);
638 NetSendPacket(volatile uchar * pkt, int len)
640 (void) eth_send(pkt, len);
644 NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
648 /* convert to new style broadcast */
652 /* if broadcast, make the ether address a broadcast and don't do ARP */
653 if (dest == 0xFFFFFFFF)
654 ether = NetBcastAddr;
656 /* if MAC address was not discovered yet, save the packet and do an ARP request */
657 if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
660 printf("sending ARP for %08lx\n", dest);
662 NetArpWaitPacketIP = dest;
663 NetArpWaitPacketMAC = ether;
665 pkt = NetArpWaitTxPacket;
666 pkt += NetSetEther (pkt, NetArpWaitPacketMAC, PROT_IP);
668 NetSetIP (pkt, dest, dport, sport, len);
669 memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len);
671 /* size of the waiting packet */
672 NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len;
674 /* and do the ARP request */
676 NetArpWaitTimerStart = get_timer(0);
678 return 1; /* waiting */
682 printf("sending UDP to %08lx/%02x:%02x:%02x:%02x:%02x:%02x\n",
683 dest, ether[0], ether[1], ether[2], ether[3], ether[4], ether[5]);
686 pkt = (uchar *)NetTxPacket;
687 pkt += NetSetEther (pkt, ether, PROT_IP);
688 NetSetIP (pkt, dest, dport, sport, len);
689 (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len);
691 return 0; /* transmitted */
694 #if defined(CONFIG_CMD_PING)
695 static ushort PingSeqNo;
704 /* XXX always send arp request */
706 memcpy(mac, NetEtherNullAddr, 6);
709 printf("sending ARP for %08lx\n", NetPingIP);
712 NetArpWaitPacketIP = NetPingIP;
713 NetArpWaitPacketMAC = mac;
715 pkt = NetArpWaitTxPacket;
716 pkt += NetSetEther(pkt, mac, PROT_IP);
718 ip = (volatile IP_t *)pkt;
721 * Construct an IP and ICMP header. (need to set no fragment bit - XXX)
723 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
725 ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8);
726 ip->ip_id = htons(NetIPID++);
727 ip->ip_off = htons(0x4000); /* No fragmentation */
729 ip->ip_p = 0x01; /* ICMP */
731 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
732 NetCopyIP((void*)&ip->ip_dst, &NetPingIP); /* - "" - */
733 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
735 s = &ip->udp_src; /* XXX ICMP starts here */
736 s[0] = htons(0x0800); /* echo-request, code */
737 s[1] = 0; /* checksum */
738 s[2] = 0; /* identifier */
739 s[3] = htons(PingSeqNo++); /* sequence number */
740 s[1] = ~NetCksum((uchar *)s, 8/2);
742 /* size of the waiting packet */
743 NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
745 /* and do the ARP request */
747 NetArpWaitTimerStart = get_timer(0);
749 return 1; /* waiting */
756 NetState = NETLOOP_FAIL; /* we did not get the reply */
760 PingHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
763 volatile IP_t *ip = (volatile IP_t *)pkt;
765 tmp = NetReadIP((void *)&ip->ip_src);
766 if (tmp != NetPingIP)
769 NetState = NETLOOP_SUCCESS;
772 static void PingStart(void)
774 #if defined(CONFIG_NET_MULTI)
775 printf ("Using %s device\n", eth_get_name());
776 #endif /* CONFIG_NET_MULTI */
777 NetSetTimeout (10 * CFG_HZ, PingTimeout);
778 NetSetHandler (PingHandler);
784 #if defined(CONFIG_CMD_CDP)
786 #define CDP_DEVICE_ID_TLV 0x0001
787 #define CDP_ADDRESS_TLV 0x0002
788 #define CDP_PORT_ID_TLV 0x0003
789 #define CDP_CAPABILITIES_TLV 0x0004
790 #define CDP_VERSION_TLV 0x0005
791 #define CDP_PLATFORM_TLV 0x0006
792 #define CDP_NATIVE_VLAN_TLV 0x000a
793 #define CDP_APPLIANCE_VLAN_TLV 0x000e
794 #define CDP_TRIGGER_TLV 0x000f
795 #define CDP_POWER_CONSUMPTION_TLV 0x0010
796 #define CDP_SYSNAME_TLV 0x0014
797 #define CDP_SYSOBJECT_TLV 0x0015
798 #define CDP_MANAGEMENT_ADDRESS_TLV 0x0016
800 #define CDP_TIMEOUT (CFG_HZ/4) /* one packet every 250ms */
805 ushort CDPNativeVLAN;
806 ushort CDPApplianceVLAN;
808 static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
810 static ushort CDP_compute_csum(const uchar *buff, ushort len)
819 odd = 1 & (ulong)buff;
829 if (result & 0x80000000)
830 result = (result & 0xFFFF) + (result >> 16);
834 leftover = (signed short)(*(const signed char *)buff);
835 /* CISCO SUCKS big time! (and blows too):
836 * CDP uses the IP checksum algorithm with a twist;
837 * for the last byte it *sign* extends and sums.
839 result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff);
842 result = (result & 0xFFFF) + (result >> 16);
845 result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
848 /* add up 16-bit and 17-bit words for 17+c bits */
849 result = (result & 0xffff) + (result >> 16);
850 /* add up 16-bit and 2-bit for 16+c bit */
851 result = (result & 0xffff) + (result >> 16);
853 result = (result & 0xffff) + (result >> 16);
856 csum = ~(ushort)result;
858 /* run time endian detection */
859 if (csum != htons(csum)) /* little endian */
865 int CDPSendTrigger(void)
873 #if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \
874 defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM)
879 et = (Ethernet_t *)pkt;
881 /* NOTE: trigger sent not on any VLAN */
883 /* form ethernet header */
884 memcpy(et->et_dest, NetCDPAddr, 6);
885 memcpy(et->et_src, NetOurEther, 6);
887 pkt += ETHER_HDR_SIZE;
890 memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr));
891 pkt += sizeof(CDP_SNAP_hdr);
894 *pkt++ = 0x02; /* CDP version 2 */
895 *pkt++ = 180; /* TTL */
896 s = (volatile ushort *)pkt;
898 *s++ = htons(0); /* checksum (0 for later calculation) */
901 #ifdef CONFIG_CDP_DEVICE_ID
902 *s++ = htons(CDP_DEVICE_ID_TLV);
903 *s++ = htons(CONFIG_CDP_DEVICE_ID);
904 memset(buf, 0, sizeof(buf));
905 sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%02X%02X%02X%02X%02X%02X",
906 NetOurEther[0] & 0xff, NetOurEther[1] & 0xff,
907 NetOurEther[2] & 0xff, NetOurEther[3] & 0xff,
908 NetOurEther[4] & 0xff, NetOurEther[5] & 0xff);
909 memcpy((uchar *)s, buf, 16);
913 #ifdef CONFIG_CDP_PORT_ID
914 *s++ = htons(CDP_PORT_ID_TLV);
915 memset(buf, 0, sizeof(buf));
916 sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index());
918 if (len & 1) /* make it even */
920 *s++ = htons(len + 4);
921 memcpy((uchar *)s, buf, len);
925 #ifdef CONFIG_CDP_CAPABILITIES
926 *s++ = htons(CDP_CAPABILITIES_TLV);
928 *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES);
932 #ifdef CONFIG_CDP_VERSION
933 *s++ = htons(CDP_VERSION_TLV);
934 memset(buf, 0, sizeof(buf));
935 strcpy(buf, CONFIG_CDP_VERSION);
937 if (len & 1) /* make it even */
939 *s++ = htons(len + 4);
940 memcpy((uchar *)s, buf, len);
944 #ifdef CONFIG_CDP_PLATFORM
945 *s++ = htons(CDP_PLATFORM_TLV);
946 memset(buf, 0, sizeof(buf));
947 strcpy(buf, CONFIG_CDP_PLATFORM);
949 if (len & 1) /* make it even */
951 *s++ = htons(len + 4);
952 memcpy((uchar *)s, buf, len);
956 #ifdef CONFIG_CDP_TRIGGER
957 *s++ = htons(CDP_TRIGGER_TLV);
959 *(ulong *)s = htonl(CONFIG_CDP_TRIGGER);
963 #ifdef CONFIG_CDP_POWER_CONSUMPTION
964 *s++ = htons(CDP_POWER_CONSUMPTION_TLV);
966 *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION);
969 /* length of ethernet packet */
970 len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE);
971 et->et_protlen = htons(len);
973 len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr);
974 chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len));
979 (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket);
989 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
994 /* if not OK try again */
998 NetState = NETLOOP_SUCCESS;
1002 CDPDummyHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
1008 CDPHandler(const uchar * pkt, unsigned len)
1017 if (len < sizeof(CDP_SNAP_hdr) + 4)
1020 /* check for valid CDP SNAP header */
1021 if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0)
1024 pkt += sizeof(CDP_SNAP_hdr);
1025 len -= sizeof(CDP_SNAP_hdr);
1027 /* Version of CDP protocol must be >= 2 and TTL != 0 */
1028 if (pkt[0] < 0x02 || pkt[1] == 0)
1031 /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
1033 printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
1036 if (CDP_compute_csum(pkt, len) != 0)
1048 ss = (const ushort *)pkt;
1049 type = ntohs(ss[0]);
1050 tlen = ntohs(ss[1]);
1058 ss += 2; /* point ss to the data of the TLV */
1062 case CDP_DEVICE_ID_TLV:
1064 case CDP_ADDRESS_TLV:
1066 case CDP_PORT_ID_TLV:
1068 case CDP_CAPABILITIES_TLV:
1070 case CDP_VERSION_TLV:
1072 case CDP_PLATFORM_TLV:
1074 case CDP_NATIVE_VLAN_TLV:
1077 case CDP_APPLIANCE_VLAN_TLV:
1078 t = (const uchar *)ss;
1084 ss = (const ushort *)(t + 1);
1086 #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
1087 if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE)
1090 vlan = ntohs(*ss); /* XXX will this work; dunno */
1095 case CDP_TRIGGER_TLV:
1097 case CDP_POWER_CONSUMPTION_TLV:
1099 case CDP_SYSNAME_TLV:
1101 case CDP_SYSOBJECT_TLV:
1103 case CDP_MANAGEMENT_ADDRESS_TLV:
1108 CDPApplianceVLAN = vlan;
1109 CDPNativeVLAN = nvlan;
1115 printf("** CDP packet is too short\n");
1119 static void CDPStart(void)
1121 #if defined(CONFIG_NET_MULTI)
1122 printf ("Using %s device\n", eth_get_name());
1127 CDPNativeVLAN = htons(-1);
1128 CDPApplianceVLAN = htons(-1);
1130 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
1131 NetSetHandler (CDPDummyHandler);
1139 NetReceive(volatile uchar * inpkt, int len)
1147 #if defined(CONFIG_CMD_CDP)
1150 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
1153 printf("packet received\n");
1158 et = (Ethernet_t *)inpkt;
1160 /* too small packet? */
1161 if (len < ETHER_HDR_SIZE)
1164 #if defined(CONFIG_CMD_CDP)
1165 /* keep track if packet is CDP */
1166 iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0;
1169 myvlanid = ntohs(NetOurVLAN);
1170 if (myvlanid == (ushort)-1)
1171 myvlanid = VLAN_NONE;
1172 mynvlanid = ntohs(NetOurNativeVLAN);
1173 if (mynvlanid == (ushort)-1)
1174 mynvlanid = VLAN_NONE;
1176 x = ntohs(et->et_protlen);
1179 printf("packet received\n");
1184 * Got a 802 packet. Check the other protocol field.
1186 x = ntohs(et->et_prot);
1188 ip = (IP_t *)(inpkt + E802_HDR_SIZE);
1189 len -= E802_HDR_SIZE;
1191 } else if (x != PROT_VLAN) { /* normal packet */
1192 ip = (IP_t *)(inpkt + ETHER_HDR_SIZE);
1193 len -= ETHER_HDR_SIZE;
1195 } else { /* VLAN packet */
1196 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et;
1199 printf("VLAN packet received\n");
1201 /* too small packet? */
1202 if (len < VLAN_ETHER_HDR_SIZE)
1205 /* if no VLAN active */
1206 if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
1207 #if defined(CONFIG_CMD_CDP)
1213 cti = ntohs(vet->vet_tag);
1214 vlanid = cti & VLAN_IDMASK;
1215 x = ntohs(vet->vet_type);
1217 ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE);
1218 len -= VLAN_ETHER_HDR_SIZE;
1222 printf("Receive from protocol 0x%x\n", x);
1225 #if defined(CONFIG_CMD_CDP)
1227 CDPHandler((uchar *)ip, len);
1232 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1233 if (vlanid == VLAN_NONE)
1234 vlanid = (mynvlanid & VLAN_IDMASK);
1236 if (vlanid != (myvlanid & VLAN_IDMASK))
1244 * We have to deal with two types of ARP packets:
1245 * - REQUEST packets will be answered by sending our
1246 * IP address - if we know it.
1247 * - REPLY packates are expected only after we asked
1248 * for the TFTP server's or the gateway's ethernet
1249 * address; so if we receive such a packet, we set
1250 * the server ethernet address
1256 if (len < ARP_HDR_SIZE) {
1257 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1260 if (ntohs(arp->ar_hrd) != ARP_ETHER) {
1263 if (ntohs(arp->ar_pro) != PROT_IP) {
1266 if (arp->ar_hln != 6) {
1269 if (arp->ar_pln != 4) {
1273 if (NetOurIP == 0) {
1277 if (NetReadIP(&arp->ar_data[16]) != NetOurIP) {
1281 switch (ntohs(arp->ar_op)) {
1282 case ARPOP_REQUEST: /* reply with our IP address */
1284 puts ("Got ARP REQUEST, return our IP\n");
1287 pkt += NetSetEther(pkt, et->et_src, PROT_ARP);
1288 arp->ar_op = htons(ARPOP_REPLY);
1289 memcpy (&arp->ar_data[10], &arp->ar_data[0], 6);
1290 NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]);
1291 memcpy (&arp->ar_data[ 0], NetOurEther, 6);
1292 NetCopyIP(&arp->ar_data[ 6], &NetOurIP);
1293 (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE);
1296 case ARPOP_REPLY: /* arp reply */
1297 /* are we waiting for a reply */
1298 if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC)
1301 printf("Got ARP REPLY, set server/gtwy eth addr (%02x:%02x:%02x:%02x:%02x:%02x)\n",
1302 arp->ar_data[0], arp->ar_data[1],
1303 arp->ar_data[2], arp->ar_data[3],
1304 arp->ar_data[4], arp->ar_data[5]);
1307 tmp = NetReadIP(&arp->ar_data[6]);
1309 /* matched waiting packet's address */
1310 if (tmp == NetArpWaitReplyIP) {
1314 /* save address for later use */
1315 memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6);
1317 #ifdef CONFIG_NETCONSOLE
1318 (*packetHandler)(0,0,0,0);
1320 /* modify header, and transmit it */
1321 memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6);
1322 (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize);
1324 /* no arp request pending now */
1325 NetArpWaitPacketIP = 0;
1326 NetArpWaitTxPacketSize = 0;
1327 NetArpWaitPacketMAC = NULL;
1333 printf("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op));
1341 puts ("Got RARP\n");
1344 if (len < ARP_HDR_SIZE) {
1345 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1349 if ((ntohs(arp->ar_op) != RARPOP_REPLY) ||
1350 (ntohs(arp->ar_hrd) != ARP_ETHER) ||
1351 (ntohs(arp->ar_pro) != PROT_IP) ||
1352 (arp->ar_hln != 6) || (arp->ar_pln != 4)) {
1354 puts ("invalid RARP header\n");
1356 NetCopyIP(&NetOurIP, &arp->ar_data[16]);
1357 if (NetServerIP == 0)
1358 NetCopyIP(&NetServerIP, &arp->ar_data[ 6]);
1359 memcpy (NetServerEther, &arp->ar_data[ 0], 6);
1361 (*packetHandler)(0,0,0,0);
1369 if (len < IP_HDR_SIZE) {
1370 debug ("len bad %d < %d\n", len, IP_HDR_SIZE);
1373 if (len < ntohs(ip->ip_len)) {
1374 printf("len bad %d < %d\n", len, ntohs(ip->ip_len));
1377 len = ntohs(ip->ip_len);
1379 printf("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff);
1381 if ((ip->ip_hl_v & 0xf0) != 0x40) {
1384 if (ip->ip_off & htons(0x1fff)) { /* Can't deal w/ fragments */
1387 if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) {
1388 puts ("checksum bad\n");
1391 tmp = NetReadIP(&ip->ip_dst);
1392 if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) {
1393 #ifdef CONFIG_MCAST_TFTP
1394 if (Mcast_addr != tmp)
1399 * watch for ICMP host redirects
1401 * There is no real handler code (yet). We just watch
1402 * for ICMP host redirect messages. In case anybody
1403 * sees these messages: please contact me
1404 * (wd@denx.de), or - even better - send me the
1405 * necessary fixes :-)
1407 * Note: in all cases where I have seen this so far
1408 * it was a problem with the router configuration,
1409 * for instance when a router was configured in the
1410 * BOOTP reply, but the TFTP server was on the same
1411 * subnet. So this is probably a warning that your
1412 * configuration might be wrong. But I'm not really
1413 * sure if there aren't any other situations.
1415 if (ip->ip_p == IPPROTO_ICMP) {
1416 ICMP_t *icmph = (ICMP_t *)&(ip->udp_src);
1418 switch (icmph->type) {
1420 if (icmph->code != ICMP_REDIR_HOST)
1422 puts (" ICMP Host Redirect to ");
1423 print_IPaddr(icmph->un.gateway);
1426 #if defined(CONFIG_CMD_PING)
1427 case ICMP_ECHO_REPLY:
1429 * IP header OK. Pass the packet to the current handler.
1431 /* XXX point to ip packet */
1432 (*packetHandler)((uchar *)ip, 0, 0, 0);
1434 case ICMP_ECHO_REQUEST:
1436 printf ("Got ICMP ECHO REQUEST, return %d bytes \n",
1437 ETHER_HDR_SIZE + len);
1439 memcpy (&et->et_dest[0], &et->et_src[0], 6);
1440 memcpy (&et->et_src[ 0], NetOurEther, 6);
1444 NetCopyIP((void*)&ip->ip_dst, &ip->ip_src);
1445 NetCopyIP((void*)&ip->ip_src, &NetOurIP);
1446 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP >> 1);
1448 icmph->type = ICMP_ECHO_REPLY;
1449 icmph->checksum = 0;
1450 icmph->checksum = ~NetCksum((uchar *)icmph,
1451 (len - IP_HDR_SIZE_NO_UDP) >> 1);
1452 (void) eth_send((uchar *)et, ETHER_HDR_SIZE + len);
1458 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1462 #ifdef CONFIG_UDP_CHECKSUM
1463 if (ip->udp_xsum != 0) {
1469 xsum += (ntohs(ip->udp_len));
1470 xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff;
1471 xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff;
1472 xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff;
1473 xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff;
1475 sumlen = ntohs(ip->udp_len);
1476 sumptr = (ushort *) &(ip->udp_src);
1478 while (sumlen > 1) {
1481 sumdata = *sumptr++;
1482 xsum += ntohs(sumdata);
1488 sumdata = *(unsigned char *) sumptr;
1489 sumdata = (sumdata << 8) & 0xff00;
1492 while ((xsum >> 16) != 0) {
1493 xsum = (xsum & 0x0000ffff) + ((xsum >> 16) & 0x0000ffff);
1495 if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
1496 printf(" UDP wrong checksum %08x %08x\n", xsum, ntohs(ip->udp_xsum));
1503 #ifdef CONFIG_NETCONSOLE
1504 nc_input_packet((uchar *)ip +IP_HDR_SIZE,
1507 ntohs(ip->udp_len) - 8);
1510 * IP header OK. Pass the packet to the current handler.
1512 (*packetHandler)((uchar *)ip +IP_HDR_SIZE,
1515 ntohs(ip->udp_len) - 8);
1521 /**********************************************************************/
1523 static int net_check_prereq (proto_t protocol)
1527 #if defined(CONFIG_CMD_PING)
1529 if (NetPingIP == 0) {
1530 puts ("*** ERROR: ping address not given\n");
1535 #if defined(CONFIG_CMD_SNTP)
1537 if (NetNtpServerIP == 0) {
1538 puts ("*** ERROR: NTP server address not given\n");
1543 #if defined(CONFIG_CMD_NFS)
1548 if (NetServerIP == 0) {
1549 puts ("*** ERROR: `serverip' not set\n");
1552 #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP)
1556 if (NetOurIP == 0) {
1557 puts ("*** ERROR: `ipaddr' not set\n");
1566 if (memcmp (NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
1567 #ifdef CONFIG_NET_MULTI
1568 extern int eth_get_dev_index (void);
1569 int num = eth_get_dev_index ();
1573 puts ("*** ERROR: No ethernet found.\n");
1576 puts ("*** ERROR: `ethaddr' not set\n");
1579 printf ("*** ERROR: `eth%daddr' not set\n",
1587 puts ("*** ERROR: `ethaddr' not set\n");
1595 return (0); /* OK */
1597 /**********************************************************************/
1600 NetCksumOk(uchar * ptr, int len)
1602 return !((NetCksum(ptr, len) + 1) & 0xfffe);
1607 NetCksum(uchar * ptr, int len)
1610 ushort *p = (ushort *)ptr;
1615 xsum = (xsum & 0xffff) + (xsum >> 16);
1616 xsum = (xsum & 0xffff) + (xsum >> 16);
1617 return (xsum & 0xffff);
1625 myvlanid = ntohs(NetOurVLAN);
1626 if (myvlanid == (ushort)-1)
1627 myvlanid = VLAN_NONE;
1629 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE;
1633 NetSetEther(volatile uchar * xet, uchar * addr, uint prot)
1635 Ethernet_t *et = (Ethernet_t *)xet;
1638 myvlanid = ntohs(NetOurVLAN);
1639 if (myvlanid == (ushort)-1)
1640 myvlanid = VLAN_NONE;
1642 memcpy (et->et_dest, addr, 6);
1643 memcpy (et->et_src, NetOurEther, 6);
1644 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
1645 et->et_protlen = htons(prot);
1646 return ETHER_HDR_SIZE;
1648 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet;
1650 vet->vet_vlan_type = htons(PROT_VLAN);
1651 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1652 vet->vet_type = htons(prot);
1653 return VLAN_ETHER_HDR_SIZE;
1658 NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
1660 volatile IP_t *ip = (IP_t *)xip;
1663 * If the data is an odd number of bytes, zero the
1664 * byte after the last byte so that the checksum
1668 xip[IP_HDR_SIZE + len] = 0;
1671 * Construct an IP and UDP header.
1672 * (need to set no fragment bit - XXX)
1674 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
1676 ip->ip_len = htons(IP_HDR_SIZE + len);
1677 ip->ip_id = htons(NetIPID++);
1678 ip->ip_off = htons(0x4000); /* No fragmentation */
1680 ip->ip_p = 17; /* UDP */
1682 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
1683 NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */
1684 ip->udp_src = htons(sport);
1685 ip->udp_dst = htons(dport);
1686 ip->udp_len = htons(8 + len);
1688 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
1691 void copy_filename (char *dst, char *src, int size)
1693 if (*src && (*src == '"')) {
1698 while ((--size > 0) && *src && (*src != '"')) {
1706 void ip_to_string (IPaddr_t x, char *s)
1709 sprintf (s, "%d.%d.%d.%d",
1710 (int) ((x >> 24) & 0xff),
1711 (int) ((x >> 16) & 0xff),
1712 (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff)
1716 IPaddr_t string_to_ip(char *s)
1725 for (addr=0, i=0; i<4; ++i) {
1726 ulong val = s ? simple_strtoul(s, &e, 10) : 0;
1728 addr |= (val & 0xFF);
1734 return (htonl(addr));
1737 void VLAN_to_string(ushort x, char *s)
1741 if (x == (ushort)-1)
1747 sprintf(s, "%d", x & VLAN_IDMASK);
1750 ushort string_to_VLAN(char *s)
1755 return htons(VLAN_NONE);
1757 if (*s < '0' || *s > '9')
1760 id = (ushort)simple_strtoul(s, NULL, 10);
1765 void print_IPaddr (IPaddr_t x)
1769 ip_to_string (x, tmp);
1774 IPaddr_t getenv_IPaddr (char *var)
1776 return (string_to_ip(getenv(var)));
1779 ushort getenv_VLAN(char *var)
1781 return (string_to_VLAN(getenv(var)));