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 #ifndef CONFIG_ARP_TIMEOUT
98 # define ARP_TIMEOUT 5000UL /* Milliseconds before trying ARP again */
100 # define ARP_TIMEOUT CONFIG_ARP_TIMEOUT
104 #ifndef CONFIG_NET_RETRY_COUNT
105 # define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */
107 # define ARP_TIMEOUT_COUNT CONFIG_NET_RETRY_COUNT
114 /** BOOTP EXTENTIONS **/
116 IPaddr_t NetOurSubnetMask
=0; /* Our subnet mask (0=unknown) */
117 IPaddr_t NetOurGatewayIP
=0; /* Our gateways IP address */
118 IPaddr_t NetOurDNSIP
=0; /* Our DNS IP address */
119 #if defined(CONFIG_BOOTP_DNS2)
120 IPaddr_t NetOurDNS2IP
=0; /* Our 2nd DNS IP address */
122 char NetOurNISDomain
[32]={0,}; /* Our NIS domain */
123 char NetOurHostName
[32]={0,}; /* Our hostname */
124 char NetOurRootPath
[64]={0,}; /* Our bootpath */
125 ushort NetBootFileSize
=0; /* Our bootfile size in blocks */
127 #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */
131 /** END OF BOOTP EXTENTIONS **/
133 ulong NetBootFileXferSize
; /* The actual transferred size of the bootfile (in bytes) */
134 uchar NetOurEther
[6]; /* Our ethernet address */
135 uchar NetServerEther
[6] = /* Boot server enet address */
136 { 0, 0, 0, 0, 0, 0 };
137 IPaddr_t NetOurIP
; /* Our IP addr (0 = unknown) */
138 IPaddr_t NetServerIP
; /* Server IP addr (0 = unknown) */
139 volatile uchar
*NetRxPkt
; /* Current receive packet */
140 int NetRxPktLen
; /* Current rx packet length */
141 unsigned NetIPID
; /* IP packet ID */
142 uchar NetBcastAddr
[6] = /* Ethernet bcast address */
143 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
144 uchar NetEtherNullAddr
[6] =
145 { 0, 0, 0, 0, 0, 0 };
147 void (*push_packet
)(volatile void *, int len
) = 0;
149 #if defined(CONFIG_CMD_CDP)
150 uchar NetCDPAddr
[6] = /* Ethernet bcast address */
151 { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
153 int NetState
; /* Network loop state */
154 #ifdef CONFIG_NET_MULTI
155 int NetRestartWrap
= 0; /* Tried all network devices */
156 static int NetRestarted
= 0; /* Network loop restarted */
157 static int NetDevExists
= 0; /* At least one device configured */
160 /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
161 ushort NetOurVLAN
= 0xFFFF; /* default is without VLAN */
162 ushort NetOurNativeVLAN
= 0xFFFF; /* ditto */
164 char BootFile
[128]; /* Boot File name */
166 #if defined(CONFIG_CMD_PING)
167 IPaddr_t NetPingIP
; /* the ip address to ping */
169 static void PingStart(void);
172 #if defined(CONFIG_CMD_CDP)
173 static void CDPStart(void);
176 #if defined(CONFIG_CMD_SNTP)
177 IPaddr_t NetNtpServerIP
; /* NTP server IP address */
178 int NetTimeOffset
=0; /* offset time from UTC */
181 #ifdef CONFIG_NETCONSOLE
183 int nc_input_packet(uchar
*pkt
, unsigned dest
, unsigned src
, unsigned len
);
186 volatile uchar PktBuf
[(PKTBUFSRX
+1) * PKTSIZE_ALIGN
+ PKTALIGN
];
188 volatile uchar
*NetRxPackets
[PKTBUFSRX
]; /* Receive packets */
190 static rxhand_f
*packetHandler
; /* Current RX packet handler */
191 static thand_f
*timeHandler
; /* Current timeout handler */
192 static ulong timeStart
; /* Time base value */
193 static ulong timeDelta
; /* Current timeout value */
194 volatile uchar
*NetTxPacket
= 0; /* THE transmit packet */
196 static int net_check_prereq (proto_t protocol
);
198 /**********************************************************************/
200 IPaddr_t NetArpWaitPacketIP
;
201 IPaddr_t NetArpWaitReplyIP
;
202 uchar
*NetArpWaitPacketMAC
; /* MAC address of waiting packet's destination */
203 uchar
*NetArpWaitTxPacket
; /* THE transmit packet */
204 int NetArpWaitTxPacketSize
;
205 uchar NetArpWaitPacketBuf
[PKTSIZE_ALIGN
+ PKTALIGN
];
206 ulong NetArpWaitTimerStart
;
209 void ArpRequest (void)
216 printf ("ARP broadcast %d\n", NetArpWaitTry
);
220 pkt
+= NetSetEther (pkt
, NetBcastAddr
, PROT_ARP
);
224 arp
->ar_hrd
= htons (ARP_ETHER
);
225 arp
->ar_pro
= htons (PROT_IP
);
228 arp
->ar_op
= htons (ARPOP_REQUEST
);
230 memcpy (&arp
->ar_data
[0], NetOurEther
, 6); /* source ET addr */
231 NetWriteIP ((uchar
*) & arp
->ar_data
[6], NetOurIP
); /* source IP addr */
232 for (i
= 10; i
< 16; ++i
) {
233 arp
->ar_data
[i
] = 0; /* dest ET addr = 0 */
236 if ((NetArpWaitPacketIP
& NetOurSubnetMask
) !=
237 (NetOurIP
& NetOurSubnetMask
)) {
238 if (NetOurGatewayIP
== 0) {
239 puts ("## Warning: gatewayip needed but not set\n");
240 NetArpWaitReplyIP
= NetArpWaitPacketIP
;
242 NetArpWaitReplyIP
= NetOurGatewayIP
;
245 NetArpWaitReplyIP
= NetArpWaitPacketIP
;
248 NetWriteIP ((uchar
*) & arp
->ar_data
[16], NetArpWaitReplyIP
);
249 (void) eth_send (NetTxPacket
, (pkt
- NetTxPacket
) + ARP_HDR_SIZE
);
252 void ArpTimeoutCheck(void)
256 if (!NetArpWaitPacketIP
)
261 /* check for arp timeout */
262 if ((t
- NetArpWaitTimerStart
) > ARP_TIMEOUT
) {
265 if (NetArpWaitTry
>= ARP_TIMEOUT_COUNT
) {
266 puts ("\nARP Retry count exceeded; starting again\n");
270 NetArpWaitTimerStart
= t
;
276 /**********************************************************************/
278 * Main network processing loop.
282 NetLoop(proto_t protocol
)
286 #ifdef CONFIG_NET_MULTI
291 /* XXX problem with bss workaround */
292 NetArpWaitPacketMAC
= NULL
;
293 NetArpWaitTxPacket
= NULL
;
294 NetArpWaitPacketIP
= 0;
295 NetArpWaitReplyIP
= 0;
296 NetArpWaitTxPacket
= NULL
;
302 * Setup packet buffers, aligned correctly.
304 NetTxPacket
= &PktBuf
[0] + (PKTALIGN
- 1);
305 NetTxPacket
-= (ulong
)NetTxPacket
% PKTALIGN
;
306 for (i
= 0; i
< PKTBUFSRX
; i
++) {
307 NetRxPackets
[i
] = NetTxPacket
+ (i
+1)*PKTSIZE_ALIGN
;
311 if (!NetArpWaitTxPacket
) {
312 NetArpWaitTxPacket
= &NetArpWaitPacketBuf
[0] + (PKTALIGN
- 1);
313 NetArpWaitTxPacket
-= (ulong
)NetArpWaitTxPacket
% PKTALIGN
;
314 NetArpWaitTxPacketSize
= 0;
318 #ifdef CONFIG_NET_MULTI
321 if (eth_init(bd
) < 0) {
327 #ifdef CONFIG_NET_MULTI
328 memcpy (NetOurEther
, eth_get_dev()->enetaddr
, 6);
330 memcpy (NetOurEther
, bd
->bi_enetaddr
, 6);
333 NetState
= NETLOOP_CONTINUE
;
336 * Start the ball rolling with the given start function. From
337 * here on, this code is a state machine driven by received
338 * packets and timer events.
342 #if defined(CONFIG_CMD_NFS)
345 #if defined(CONFIG_CMD_PING)
348 #if defined(CONFIG_CMD_SNTP)
353 NetCopyIP(&NetOurIP
, &bd
->bi_ip_addr
);
354 NetOurGatewayIP
= getenv_IPaddr ("gatewayip");
355 NetOurSubnetMask
= getenv_IPaddr ("netmask");
356 NetOurVLAN
= getenv_VLAN("vlan");
357 NetOurNativeVLAN
= getenv_VLAN("nvlan");
360 #if defined(CONFIG_CMD_NFS)
365 NetServerIP
= getenv_IPaddr ("serverip");
367 #if defined(CONFIG_CMD_PING)
372 #if defined(CONFIG_CMD_SNTP)
385 * initialize our IP addr to 0 in order to accept ANY
386 * IP addr assigned to us by the BOOTP / RARP server
389 NetServerIP
= getenv_IPaddr ("serverip");
390 NetOurVLAN
= getenv_VLAN("vlan"); /* VLANs must be read */
391 NetOurNativeVLAN
= getenv_VLAN("nvlan");
393 NetOurVLAN
= getenv_VLAN("vlan"); /* VLANs must be read */
394 NetOurNativeVLAN
= getenv_VLAN("nvlan");
400 switch (net_check_prereq (protocol
)) {
402 /* network not configured */
406 #ifdef CONFIG_NET_MULTI
408 /* network device not configured */
410 #endif /* CONFIG_NET_MULTI */
413 #ifdef CONFIG_NET_MULTI
418 /* always use ARP to get server ethernet address */
422 #if defined(CONFIG_CMD_DHCP)
424 /* Start with a clean slate... */
427 NetServerIP
= getenv_IPaddr ("serverip");
428 DhcpRequest(); /* Basically same as BOOTP */
441 #if defined(CONFIG_CMD_PING)
446 #if defined(CONFIG_CMD_NFS)
451 #if defined(CONFIG_CMD_CDP)
456 #ifdef CONFIG_NETCONSOLE
461 #if defined(CONFIG_CMD_SNTP)
470 NetBootFileXferSize
= 0;
474 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
475 #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
477 * Echo the inverted link state to the fault LED.
479 if(miiphy_link(eth_get_dev()->name
, CONFIG_SYS_FAULT_MII_ADDR
)) {
480 status_led_set (STATUS_LED_RED
, STATUS_LED_OFF
);
482 status_led_set (STATUS_LED_RED
, STATUS_LED_ON
);
484 #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
485 #endif /* CONFIG_MII, ... */
488 * Main packet reception loop. Loop receiving packets until
489 * someone sets `NetState' to a state that terminates.
493 #ifdef CONFIG_SHOW_ACTIVITY
495 extern void show_activity(int arg
);
500 * Check the ethernet for a new packet. The ethernet
501 * receive routine will process it.
506 * Abort if ctrl-c was pressed.
517 * Check for a timeout, and run the timeout handler
520 if (timeHandler
&& ((get_timer(0) - timeStart
) > timeDelta
)) {
523 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
524 # if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
525 defined(CONFIG_STATUS_LED) && \
526 defined(STATUS_LED_RED)
528 * Echo the inverted link state to the fault LED.
530 if(miiphy_link(eth_get_dev()->name
, CONFIG_SYS_FAULT_MII_ADDR
)) {
531 status_led_set (STATUS_LED_RED
, STATUS_LED_OFF
);
533 status_led_set (STATUS_LED_RED
, STATUS_LED_ON
);
535 # endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
536 #endif /* CONFIG_MII, ... */
538 timeHandler
= (thand_f
*)0;
545 case NETLOOP_RESTART
:
546 #ifdef CONFIG_NET_MULTI
551 case NETLOOP_SUCCESS
:
552 if (NetBootFileXferSize
> 0) {
554 printf("Bytes transferred = %ld (%lx hex)\n",
556 NetBootFileXferSize
);
557 sprintf(buf
, "%lX", NetBootFileXferSize
);
558 setenv("filesize", buf
);
560 sprintf(buf
, "%lX", (unsigned long)load_addr
);
561 setenv("fileaddr", buf
);
564 return NetBootFileXferSize
;
572 /**********************************************************************/
575 startAgainTimeout(void)
577 NetState
= NETLOOP_RESTART
;
581 startAgainHandler(uchar
* pkt
, unsigned dest
, unsigned src
, unsigned len
)
583 /* Totally ignore the packet */
586 void NetStartAgain (void)
589 int noretry
= 0, once
= 0;
591 if ((nretry
= getenv ("netretry")) != NULL
) {
592 noretry
= (strcmp (nretry
, "no") == 0);
593 once
= (strcmp (nretry
, "once") == 0);
597 NetState
= NETLOOP_FAIL
;
600 #ifndef CONFIG_NET_MULTI
601 NetSetTimeout (10000UL, startAgainTimeout
);
602 NetSetHandler (startAgainHandler
);
603 #else /* !CONFIG_NET_MULTI*/
605 #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
606 eth_try_another (!NetRestarted
);
609 if (NetRestartWrap
) {
611 if (NetDevExists
&& !once
) {
612 NetSetTimeout (10000UL, startAgainTimeout
);
613 NetSetHandler (startAgainHandler
);
615 NetState
= NETLOOP_FAIL
;
618 NetState
= NETLOOP_RESTART
;
620 #endif /* CONFIG_NET_MULTI */
623 /**********************************************************************/
629 NetSetHandler(rxhand_f
* f
)
636 NetSetTimeout(ulong iv
, thand_f
* f
)
639 timeHandler
= (thand_f
*)0;
642 timeStart
= get_timer(0);
649 NetSendPacket(volatile uchar
* pkt
, int len
)
651 (void) eth_send(pkt
, len
);
655 NetSendUDPPacket(uchar
*ether
, IPaddr_t dest
, int dport
, int sport
, int len
)
659 /* convert to new style broadcast */
663 /* if broadcast, make the ether address a broadcast and don't do ARP */
664 if (dest
== 0xFFFFFFFF)
665 ether
= NetBcastAddr
;
667 /* if MAC address was not discovered yet, save the packet and do an ARP request */
668 if (memcmp(ether
, NetEtherNullAddr
, 6) == 0) {
671 printf("sending ARP for %08lx\n", dest
);
673 NetArpWaitPacketIP
= dest
;
674 NetArpWaitPacketMAC
= ether
;
676 pkt
= NetArpWaitTxPacket
;
677 pkt
+= NetSetEther (pkt
, NetArpWaitPacketMAC
, PROT_IP
);
679 NetSetIP (pkt
, dest
, dport
, sport
, len
);
680 memcpy(pkt
+ IP_HDR_SIZE
, (uchar
*)NetTxPacket
+ (pkt
- (uchar
*)NetArpWaitTxPacket
) + IP_HDR_SIZE
, len
);
682 /* size of the waiting packet */
683 NetArpWaitTxPacketSize
= (pkt
- NetArpWaitTxPacket
) + IP_HDR_SIZE
+ len
;
685 /* and do the ARP request */
687 NetArpWaitTimerStart
= get_timer(0);
689 return 1; /* waiting */
693 printf("sending UDP to %08lx/%02x:%02x:%02x:%02x:%02x:%02x\n",
694 dest
, ether
[0], ether
[1], ether
[2], ether
[3], ether
[4], ether
[5]);
697 pkt
= (uchar
*)NetTxPacket
;
698 pkt
+= NetSetEther (pkt
, ether
, PROT_IP
);
699 NetSetIP (pkt
, dest
, dport
, sport
, len
);
700 (void) eth_send(NetTxPacket
, (pkt
- NetTxPacket
) + IP_HDR_SIZE
+ len
);
702 return 0; /* transmitted */
705 #if defined(CONFIG_CMD_PING)
706 static ushort PingSeqNo
;
715 /* XXX always send arp request */
717 memcpy(mac
, NetEtherNullAddr
, 6);
720 printf("sending ARP for %08lx\n", NetPingIP
);
723 NetArpWaitPacketIP
= NetPingIP
;
724 NetArpWaitPacketMAC
= mac
;
726 pkt
= NetArpWaitTxPacket
;
727 pkt
+= NetSetEther(pkt
, mac
, PROT_IP
);
729 ip
= (volatile IP_t
*)pkt
;
732 * Construct an IP and ICMP header. (need to set no fragment bit - XXX)
734 ip
->ip_hl_v
= 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
736 ip
->ip_len
= htons(IP_HDR_SIZE_NO_UDP
+ 8);
737 ip
->ip_id
= htons(NetIPID
++);
738 ip
->ip_off
= htons(0x4000); /* No fragmentation */
740 ip
->ip_p
= 0x01; /* ICMP */
742 NetCopyIP((void*)&ip
->ip_src
, &NetOurIP
); /* already in network byte order */
743 NetCopyIP((void*)&ip
->ip_dst
, &NetPingIP
); /* - "" - */
744 ip
->ip_sum
= ~NetCksum((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
/ 2);
746 s
= &ip
->udp_src
; /* XXX ICMP starts here */
747 s
[0] = htons(0x0800); /* echo-request, code */
748 s
[1] = 0; /* checksum */
749 s
[2] = 0; /* identifier */
750 s
[3] = htons(PingSeqNo
++); /* sequence number */
751 s
[1] = ~NetCksum((uchar
*)s
, 8/2);
753 /* size of the waiting packet */
754 NetArpWaitTxPacketSize
= (pkt
- NetArpWaitTxPacket
) + IP_HDR_SIZE_NO_UDP
+ 8;
756 /* and do the ARP request */
758 NetArpWaitTimerStart
= get_timer(0);
760 return 1; /* waiting */
767 NetState
= NETLOOP_FAIL
; /* we did not get the reply */
771 PingHandler (uchar
* pkt
, unsigned dest
, unsigned src
, unsigned len
)
774 volatile IP_t
*ip
= (volatile IP_t
*)pkt
;
776 tmp
= NetReadIP((void *)&ip
->ip_src
);
777 if (tmp
!= NetPingIP
)
780 NetState
= NETLOOP_SUCCESS
;
783 static void PingStart(void)
785 #if defined(CONFIG_NET_MULTI)
786 printf ("Using %s device\n", eth_get_name());
787 #endif /* CONFIG_NET_MULTI */
788 NetSetTimeout (10000UL, PingTimeout
);
789 NetSetHandler (PingHandler
);
795 #if defined(CONFIG_CMD_CDP)
797 #define CDP_DEVICE_ID_TLV 0x0001
798 #define CDP_ADDRESS_TLV 0x0002
799 #define CDP_PORT_ID_TLV 0x0003
800 #define CDP_CAPABILITIES_TLV 0x0004
801 #define CDP_VERSION_TLV 0x0005
802 #define CDP_PLATFORM_TLV 0x0006
803 #define CDP_NATIVE_VLAN_TLV 0x000a
804 #define CDP_APPLIANCE_VLAN_TLV 0x000e
805 #define CDP_TRIGGER_TLV 0x000f
806 #define CDP_POWER_CONSUMPTION_TLV 0x0010
807 #define CDP_SYSNAME_TLV 0x0014
808 #define CDP_SYSOBJECT_TLV 0x0015
809 #define CDP_MANAGEMENT_ADDRESS_TLV 0x0016
811 #define CDP_TIMEOUT 250UL /* one packet every 250ms */
816 ushort CDPNativeVLAN
;
817 ushort CDPApplianceVLAN
;
819 static const uchar CDP_SNAP_hdr
[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
821 static ushort
CDP_compute_csum(const uchar
*buff
, ushort len
)
830 odd
= 1 & (ulong
)buff
;
840 if (result
& 0x80000000)
841 result
= (result
& 0xFFFF) + (result
>> 16);
845 leftover
= (signed short)(*(const signed char *)buff
);
846 /* CISCO SUCKS big time! (and blows too):
847 * CDP uses the IP checksum algorithm with a twist;
848 * for the last byte it *sign* extends and sums.
850 result
= (result
& 0xffff0000) | ((result
+ leftover
) & 0x0000ffff);
853 result
= (result
& 0xFFFF) + (result
>> 16);
856 result
= ((result
>> 8) & 0xff) | ((result
& 0xff) << 8);
859 /* add up 16-bit and 17-bit words for 17+c bits */
860 result
= (result
& 0xffff) + (result
>> 16);
861 /* add up 16-bit and 2-bit for 16+c bit */
862 result
= (result
& 0xffff) + (result
>> 16);
864 result
= (result
& 0xffff) + (result
>> 16);
867 csum
= ~(ushort
)result
;
869 /* run time endian detection */
870 if (csum
!= htons(csum
)) /* little endian */
876 int CDPSendTrigger(void)
884 #if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \
885 defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM)
890 et
= (Ethernet_t
*)pkt
;
892 /* NOTE: trigger sent not on any VLAN */
894 /* form ethernet header */
895 memcpy(et
->et_dest
, NetCDPAddr
, 6);
896 memcpy(et
->et_src
, NetOurEther
, 6);
898 pkt
+= ETHER_HDR_SIZE
;
901 memcpy((uchar
*)pkt
, CDP_SNAP_hdr
, sizeof(CDP_SNAP_hdr
));
902 pkt
+= sizeof(CDP_SNAP_hdr
);
905 *pkt
++ = 0x02; /* CDP version 2 */
906 *pkt
++ = 180; /* TTL */
907 s
= (volatile ushort
*)pkt
;
909 *s
++ = htons(0); /* checksum (0 for later calculation) */
912 #ifdef CONFIG_CDP_DEVICE_ID
913 *s
++ = htons(CDP_DEVICE_ID_TLV
);
914 *s
++ = htons(CONFIG_CDP_DEVICE_ID
);
915 memset(buf
, 0, sizeof(buf
));
916 sprintf(buf
, CONFIG_CDP_DEVICE_ID_PREFIX
"%02X%02X%02X%02X%02X%02X",
917 NetOurEther
[0] & 0xff, NetOurEther
[1] & 0xff,
918 NetOurEther
[2] & 0xff, NetOurEther
[3] & 0xff,
919 NetOurEther
[4] & 0xff, NetOurEther
[5] & 0xff);
920 memcpy((uchar
*)s
, buf
, 16);
924 #ifdef CONFIG_CDP_PORT_ID
925 *s
++ = htons(CDP_PORT_ID_TLV
);
926 memset(buf
, 0, sizeof(buf
));
927 sprintf(buf
, CONFIG_CDP_PORT_ID
, eth_get_dev_index());
929 if (len
& 1) /* make it even */
931 *s
++ = htons(len
+ 4);
932 memcpy((uchar
*)s
, buf
, len
);
936 #ifdef CONFIG_CDP_CAPABILITIES
937 *s
++ = htons(CDP_CAPABILITIES_TLV
);
939 *(ulong
*)s
= htonl(CONFIG_CDP_CAPABILITIES
);
943 #ifdef CONFIG_CDP_VERSION
944 *s
++ = htons(CDP_VERSION_TLV
);
945 memset(buf
, 0, sizeof(buf
));
946 strcpy(buf
, CONFIG_CDP_VERSION
);
948 if (len
& 1) /* make it even */
950 *s
++ = htons(len
+ 4);
951 memcpy((uchar
*)s
, buf
, len
);
955 #ifdef CONFIG_CDP_PLATFORM
956 *s
++ = htons(CDP_PLATFORM_TLV
);
957 memset(buf
, 0, sizeof(buf
));
958 strcpy(buf
, CONFIG_CDP_PLATFORM
);
960 if (len
& 1) /* make it even */
962 *s
++ = htons(len
+ 4);
963 memcpy((uchar
*)s
, buf
, len
);
967 #ifdef CONFIG_CDP_TRIGGER
968 *s
++ = htons(CDP_TRIGGER_TLV
);
970 *(ulong
*)s
= htonl(CONFIG_CDP_TRIGGER
);
974 #ifdef CONFIG_CDP_POWER_CONSUMPTION
975 *s
++ = htons(CDP_POWER_CONSUMPTION_TLV
);
977 *s
++ = htons(CONFIG_CDP_POWER_CONSUMPTION
);
980 /* length of ethernet packet */
981 len
= (uchar
*)s
- ((uchar
*)NetTxPacket
+ ETHER_HDR_SIZE
);
982 et
->et_protlen
= htons(len
);
984 len
= ETHER_HDR_SIZE
+ sizeof(CDP_SNAP_hdr
);
985 chksum
= CDP_compute_csum((uchar
*)NetTxPacket
+ len
, (uchar
*)s
- (NetTxPacket
+ len
));
990 (void) eth_send(NetTxPacket
, (uchar
*)s
- NetTxPacket
);
1000 NetSetTimeout (CDP_TIMEOUT
, CDPTimeout
);
1005 /* if not OK try again */
1009 NetState
= NETLOOP_SUCCESS
;
1013 CDPDummyHandler (uchar
* pkt
, unsigned dest
, unsigned src
, unsigned len
)
1019 CDPHandler(const uchar
* pkt
, unsigned len
)
1028 if (len
< sizeof(CDP_SNAP_hdr
) + 4)
1031 /* check for valid CDP SNAP header */
1032 if (memcmp(pkt
, CDP_SNAP_hdr
, sizeof(CDP_SNAP_hdr
)) != 0)
1035 pkt
+= sizeof(CDP_SNAP_hdr
);
1036 len
-= sizeof(CDP_SNAP_hdr
);
1038 /* Version of CDP protocol must be >= 2 and TTL != 0 */
1039 if (pkt
[0] < 0x02 || pkt
[1] == 0)
1042 /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
1044 printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
1047 if (CDP_compute_csum(pkt
, len
) != 0)
1059 ss
= (const ushort
*)pkt
;
1060 type
= ntohs(ss
[0]);
1061 tlen
= ntohs(ss
[1]);
1069 ss
+= 2; /* point ss to the data of the TLV */
1073 case CDP_DEVICE_ID_TLV
:
1075 case CDP_ADDRESS_TLV
:
1077 case CDP_PORT_ID_TLV
:
1079 case CDP_CAPABILITIES_TLV
:
1081 case CDP_VERSION_TLV
:
1083 case CDP_PLATFORM_TLV
:
1085 case CDP_NATIVE_VLAN_TLV
:
1088 case CDP_APPLIANCE_VLAN_TLV
:
1089 t
= (const uchar
*)ss
;
1095 ss
= (const ushort
*)(t
+ 1);
1097 #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
1098 if (applid
== CONFIG_CDP_APPLIANCE_VLAN_TYPE
)
1101 vlan
= ntohs(*ss
); /* XXX will this work; dunno */
1106 case CDP_TRIGGER_TLV
:
1108 case CDP_POWER_CONSUMPTION_TLV
:
1110 case CDP_SYSNAME_TLV
:
1112 case CDP_SYSOBJECT_TLV
:
1114 case CDP_MANAGEMENT_ADDRESS_TLV
:
1119 CDPApplianceVLAN
= vlan
;
1120 CDPNativeVLAN
= nvlan
;
1126 printf("** CDP packet is too short\n");
1130 static void CDPStart(void)
1132 #if defined(CONFIG_NET_MULTI)
1133 printf ("Using %s device\n", eth_get_name());
1138 CDPNativeVLAN
= htons(-1);
1139 CDPApplianceVLAN
= htons(-1);
1141 NetSetTimeout (CDP_TIMEOUT
, CDPTimeout
);
1142 NetSetHandler (CDPDummyHandler
);
1150 NetReceive(volatile uchar
* inpkt
, int len
)
1158 #if defined(CONFIG_CMD_CDP)
1161 ushort cti
= 0, vlanid
= VLAN_NONE
, myvlanid
, mynvlanid
;
1164 printf("packet received\n");
1169 et
= (Ethernet_t
*)inpkt
;
1171 /* too small packet? */
1172 if (len
< ETHER_HDR_SIZE
)
1177 (*push_packet
)(inpkt
, len
);
1182 #if defined(CONFIG_CMD_CDP)
1183 /* keep track if packet is CDP */
1184 iscdp
= memcmp(et
->et_dest
, NetCDPAddr
, 6) == 0;
1187 myvlanid
= ntohs(NetOurVLAN
);
1188 if (myvlanid
== (ushort
)-1)
1189 myvlanid
= VLAN_NONE
;
1190 mynvlanid
= ntohs(NetOurNativeVLAN
);
1191 if (mynvlanid
== (ushort
)-1)
1192 mynvlanid
= VLAN_NONE
;
1194 x
= ntohs(et
->et_protlen
);
1197 printf("packet received\n");
1202 * Got a 802 packet. Check the other protocol field.
1204 x
= ntohs(et
->et_prot
);
1206 ip
= (IP_t
*)(inpkt
+ E802_HDR_SIZE
);
1207 len
-= E802_HDR_SIZE
;
1209 } else if (x
!= PROT_VLAN
) { /* normal packet */
1210 ip
= (IP_t
*)(inpkt
+ ETHER_HDR_SIZE
);
1211 len
-= ETHER_HDR_SIZE
;
1213 } else { /* VLAN packet */
1214 VLAN_Ethernet_t
*vet
= (VLAN_Ethernet_t
*)et
;
1217 printf("VLAN packet received\n");
1219 /* too small packet? */
1220 if (len
< VLAN_ETHER_HDR_SIZE
)
1223 /* if no VLAN active */
1224 if ((ntohs(NetOurVLAN
) & VLAN_IDMASK
) == VLAN_NONE
1225 #if defined(CONFIG_CMD_CDP)
1231 cti
= ntohs(vet
->vet_tag
);
1232 vlanid
= cti
& VLAN_IDMASK
;
1233 x
= ntohs(vet
->vet_type
);
1235 ip
= (IP_t
*)(inpkt
+ VLAN_ETHER_HDR_SIZE
);
1236 len
-= VLAN_ETHER_HDR_SIZE
;
1240 printf("Receive from protocol 0x%x\n", x
);
1243 #if defined(CONFIG_CMD_CDP)
1245 CDPHandler((uchar
*)ip
, len
);
1250 if ((myvlanid
& VLAN_IDMASK
) != VLAN_NONE
) {
1251 if (vlanid
== VLAN_NONE
)
1252 vlanid
= (mynvlanid
& VLAN_IDMASK
);
1254 if (vlanid
!= (myvlanid
& VLAN_IDMASK
))
1262 * We have to deal with two types of ARP packets:
1263 * - REQUEST packets will be answered by sending our
1264 * IP address - if we know it.
1265 * - REPLY packates are expected only after we asked
1266 * for the TFTP server's or the gateway's ethernet
1267 * address; so if we receive such a packet, we set
1268 * the server ethernet address
1274 if (len
< ARP_HDR_SIZE
) {
1275 printf("bad length %d < %d\n", len
, ARP_HDR_SIZE
);
1278 if (ntohs(arp
->ar_hrd
) != ARP_ETHER
) {
1281 if (ntohs(arp
->ar_pro
) != PROT_IP
) {
1284 if (arp
->ar_hln
!= 6) {
1287 if (arp
->ar_pln
!= 4) {
1291 if (NetOurIP
== 0) {
1295 if (NetReadIP(&arp
->ar_data
[16]) != NetOurIP
) {
1299 switch (ntohs(arp
->ar_op
)) {
1300 case ARPOP_REQUEST
: /* reply with our IP address */
1302 puts ("Got ARP REQUEST, return our IP\n");
1305 pkt
+= NetSetEther(pkt
, et
->et_src
, PROT_ARP
);
1306 arp
->ar_op
= htons(ARPOP_REPLY
);
1307 memcpy (&arp
->ar_data
[10], &arp
->ar_data
[0], 6);
1308 NetCopyIP(&arp
->ar_data
[16], &arp
->ar_data
[6]);
1309 memcpy (&arp
->ar_data
[ 0], NetOurEther
, 6);
1310 NetCopyIP(&arp
->ar_data
[ 6], &NetOurIP
);
1311 (void) eth_send((uchar
*)et
, (pkt
- (uchar
*)et
) + ARP_HDR_SIZE
);
1314 case ARPOP_REPLY
: /* arp reply */
1315 /* are we waiting for a reply */
1316 if (!NetArpWaitPacketIP
|| !NetArpWaitPacketMAC
)
1319 printf("Got ARP REPLY, set server/gtwy eth addr (%02x:%02x:%02x:%02x:%02x:%02x)\n",
1320 arp
->ar_data
[0], arp
->ar_data
[1],
1321 arp
->ar_data
[2], arp
->ar_data
[3],
1322 arp
->ar_data
[4], arp
->ar_data
[5]);
1325 tmp
= NetReadIP(&arp
->ar_data
[6]);
1327 /* matched waiting packet's address */
1328 if (tmp
== NetArpWaitReplyIP
) {
1332 /* save address for later use */
1333 memcpy(NetArpWaitPacketMAC
, &arp
->ar_data
[0], 6);
1335 #ifdef CONFIG_NETCONSOLE
1336 (*packetHandler
)(0,0,0,0);
1338 /* modify header, and transmit it */
1339 memcpy(((Ethernet_t
*)NetArpWaitTxPacket
)->et_dest
, NetArpWaitPacketMAC
, 6);
1340 (void) eth_send(NetArpWaitTxPacket
, NetArpWaitTxPacketSize
);
1342 /* no arp request pending now */
1343 NetArpWaitPacketIP
= 0;
1344 NetArpWaitTxPacketSize
= 0;
1345 NetArpWaitPacketMAC
= NULL
;
1351 printf("Unexpected ARP opcode 0x%x\n", ntohs(arp
->ar_op
));
1359 puts ("Got RARP\n");
1362 if (len
< ARP_HDR_SIZE
) {
1363 printf("bad length %d < %d\n", len
, ARP_HDR_SIZE
);
1367 if ((ntohs(arp
->ar_op
) != RARPOP_REPLY
) ||
1368 (ntohs(arp
->ar_hrd
) != ARP_ETHER
) ||
1369 (ntohs(arp
->ar_pro
) != PROT_IP
) ||
1370 (arp
->ar_hln
!= 6) || (arp
->ar_pln
!= 4)) {
1372 puts ("invalid RARP header\n");
1374 NetCopyIP(&NetOurIP
, &arp
->ar_data
[16]);
1375 if (NetServerIP
== 0)
1376 NetCopyIP(&NetServerIP
, &arp
->ar_data
[ 6]);
1377 memcpy (NetServerEther
, &arp
->ar_data
[ 0], 6);
1379 (*packetHandler
)(0,0,0,0);
1387 if (len
< IP_HDR_SIZE
) {
1388 debug ("len bad %d < %lu\n", len
, (ulong
)IP_HDR_SIZE
);
1391 if (len
< ntohs(ip
->ip_len
)) {
1392 printf("len bad %d < %d\n", len
, ntohs(ip
->ip_len
));
1395 len
= ntohs(ip
->ip_len
);
1397 printf("len=%d, v=%02x\n", len
, ip
->ip_hl_v
& 0xff);
1399 if ((ip
->ip_hl_v
& 0xf0) != 0x40) {
1402 if (ip
->ip_off
& htons(0x1fff)) { /* Can't deal w/ fragments */
1405 /* can't deal with headers > 20 bytes */
1406 if ((ip
->ip_hl_v
& 0x0f) > 0x05) {
1409 if (!NetCksumOk((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
/ 2)) {
1410 puts ("checksum bad\n");
1413 tmp
= NetReadIP(&ip
->ip_dst
);
1414 if (NetOurIP
&& tmp
!= NetOurIP
&& tmp
!= 0xFFFFFFFF) {
1415 #ifdef CONFIG_MCAST_TFTP
1416 if (Mcast_addr
!= tmp
)
1421 * watch for ICMP host redirects
1423 * There is no real handler code (yet). We just watch
1424 * for ICMP host redirect messages. In case anybody
1425 * sees these messages: please contact me
1426 * (wd@denx.de), or - even better - send me the
1427 * necessary fixes :-)
1429 * Note: in all cases where I have seen this so far
1430 * it was a problem with the router configuration,
1431 * for instance when a router was configured in the
1432 * BOOTP reply, but the TFTP server was on the same
1433 * subnet. So this is probably a warning that your
1434 * configuration might be wrong. But I'm not really
1435 * sure if there aren't any other situations.
1437 if (ip
->ip_p
== IPPROTO_ICMP
) {
1438 ICMP_t
*icmph
= (ICMP_t
*)&(ip
->udp_src
);
1440 switch (icmph
->type
) {
1442 if (icmph
->code
!= ICMP_REDIR_HOST
)
1444 puts (" ICMP Host Redirect to ");
1445 print_IPaddr(icmph
->un
.gateway
);
1448 #if defined(CONFIG_CMD_PING)
1449 case ICMP_ECHO_REPLY
:
1451 * IP header OK. Pass the packet to the current handler.
1453 /* XXX point to ip packet */
1454 (*packetHandler
)((uchar
*)ip
, 0, 0, 0);
1456 case ICMP_ECHO_REQUEST
:
1458 printf ("Got ICMP ECHO REQUEST, return %d bytes \n",
1459 ETHER_HDR_SIZE
+ len
);
1461 memcpy (&et
->et_dest
[0], &et
->et_src
[0], 6);
1462 memcpy (&et
->et_src
[ 0], NetOurEther
, 6);
1466 NetCopyIP((void*)&ip
->ip_dst
, &ip
->ip_src
);
1467 NetCopyIP((void*)&ip
->ip_src
, &NetOurIP
);
1468 ip
->ip_sum
= ~NetCksum((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
>> 1);
1470 icmph
->type
= ICMP_ECHO_REPLY
;
1471 icmph
->checksum
= 0;
1472 icmph
->checksum
= ~NetCksum((uchar
*)icmph
,
1473 (len
- IP_HDR_SIZE_NO_UDP
) >> 1);
1474 (void) eth_send((uchar
*)et
, ETHER_HDR_SIZE
+ len
);
1480 } else if (ip
->ip_p
!= IPPROTO_UDP
) { /* Only UDP packets */
1484 #ifdef CONFIG_UDP_CHECKSUM
1485 if (ip
->udp_xsum
!= 0) {
1491 xsum
+= (ntohs(ip
->udp_len
));
1492 xsum
+= (ntohl(ip
->ip_src
) >> 16) & 0x0000ffff;
1493 xsum
+= (ntohl(ip
->ip_src
) >> 0) & 0x0000ffff;
1494 xsum
+= (ntohl(ip
->ip_dst
) >> 16) & 0x0000ffff;
1495 xsum
+= (ntohl(ip
->ip_dst
) >> 0) & 0x0000ffff;
1497 sumlen
= ntohs(ip
->udp_len
);
1498 sumptr
= (ushort
*) &(ip
->udp_src
);
1500 while (sumlen
> 1) {
1503 sumdata
= *sumptr
++;
1504 xsum
+= ntohs(sumdata
);
1510 sumdata
= *(unsigned char *) sumptr
;
1511 sumdata
= (sumdata
<< 8) & 0xff00;
1514 while ((xsum
>> 16) != 0) {
1515 xsum
= (xsum
& 0x0000ffff) + ((xsum
>> 16) & 0x0000ffff);
1517 if ((xsum
!= 0x00000000) && (xsum
!= 0x0000ffff)) {
1518 printf(" UDP wrong checksum %08lx %08x\n",
1519 xsum
, ntohs(ip
->udp_xsum
));
1526 #ifdef CONFIG_NETCONSOLE
1527 nc_input_packet((uchar
*)ip
+IP_HDR_SIZE
,
1530 ntohs(ip
->udp_len
) - 8);
1533 * IP header OK. Pass the packet to the current handler.
1535 (*packetHandler
)((uchar
*)ip
+IP_HDR_SIZE
,
1538 ntohs(ip
->udp_len
) - 8);
1544 /**********************************************************************/
1546 static int net_check_prereq (proto_t protocol
)
1550 #if defined(CONFIG_CMD_PING)
1552 if (NetPingIP
== 0) {
1553 puts ("*** ERROR: ping address not given\n");
1558 #if defined(CONFIG_CMD_SNTP)
1560 if (NetNtpServerIP
== 0) {
1561 puts ("*** ERROR: NTP server address not given\n");
1566 #if defined(CONFIG_CMD_NFS)
1571 if (NetServerIP
== 0) {
1572 puts ("*** ERROR: `serverip' not set\n");
1575 #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP)
1579 if (NetOurIP
== 0) {
1580 puts ("*** ERROR: `ipaddr' not set\n");
1589 if (memcmp (NetOurEther
, "\0\0\0\0\0\0", 6) == 0) {
1590 #ifdef CONFIG_NET_MULTI
1591 extern int eth_get_dev_index (void);
1592 int num
= eth_get_dev_index ();
1596 puts ("*** ERROR: No ethernet found.\n");
1599 puts ("*** ERROR: `ethaddr' not set\n");
1602 printf ("*** ERROR: `eth%daddr' not set\n",
1610 puts ("*** ERROR: `ethaddr' not set\n");
1618 return (0); /* OK */
1620 /**********************************************************************/
1623 NetCksumOk(uchar
* ptr
, int len
)
1625 return !((NetCksum(ptr
, len
) + 1) & 0xfffe);
1630 NetCksum(uchar
* ptr
, int len
)
1633 ushort
*p
= (ushort
*)ptr
;
1638 xsum
= (xsum
& 0xffff) + (xsum
>> 16);
1639 xsum
= (xsum
& 0xffff) + (xsum
>> 16);
1640 return (xsum
& 0xffff);
1648 myvlanid
= ntohs(NetOurVLAN
);
1649 if (myvlanid
== (ushort
)-1)
1650 myvlanid
= VLAN_NONE
;
1652 return ((myvlanid
& VLAN_IDMASK
) == VLAN_NONE
) ? ETHER_HDR_SIZE
: VLAN_ETHER_HDR_SIZE
;
1656 NetSetEther(volatile uchar
* xet
, uchar
* addr
, uint prot
)
1658 Ethernet_t
*et
= (Ethernet_t
*)xet
;
1661 myvlanid
= ntohs(NetOurVLAN
);
1662 if (myvlanid
== (ushort
)-1)
1663 myvlanid
= VLAN_NONE
;
1665 memcpy (et
->et_dest
, addr
, 6);
1666 memcpy (et
->et_src
, NetOurEther
, 6);
1667 if ((myvlanid
& VLAN_IDMASK
) == VLAN_NONE
) {
1668 et
->et_protlen
= htons(prot
);
1669 return ETHER_HDR_SIZE
;
1671 VLAN_Ethernet_t
*vet
= (VLAN_Ethernet_t
*)xet
;
1673 vet
->vet_vlan_type
= htons(PROT_VLAN
);
1674 vet
->vet_tag
= htons((0 << 5) | (myvlanid
& VLAN_IDMASK
));
1675 vet
->vet_type
= htons(prot
);
1676 return VLAN_ETHER_HDR_SIZE
;
1681 NetSetIP(volatile uchar
* xip
, IPaddr_t dest
, int dport
, int sport
, int len
)
1683 volatile IP_t
*ip
= (IP_t
*)xip
;
1686 * If the data is an odd number of bytes, zero the
1687 * byte after the last byte so that the checksum
1691 xip
[IP_HDR_SIZE
+ len
] = 0;
1694 * Construct an IP and UDP header.
1695 * (need to set no fragment bit - XXX)
1697 ip
->ip_hl_v
= 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
1699 ip
->ip_len
= htons(IP_HDR_SIZE
+ len
);
1700 ip
->ip_id
= htons(NetIPID
++);
1701 ip
->ip_off
= htons(0x4000); /* No fragmentation */
1703 ip
->ip_p
= 17; /* UDP */
1705 NetCopyIP((void*)&ip
->ip_src
, &NetOurIP
); /* already in network byte order */
1706 NetCopyIP((void*)&ip
->ip_dst
, &dest
); /* - "" - */
1707 ip
->udp_src
= htons(sport
);
1708 ip
->udp_dst
= htons(dport
);
1709 ip
->udp_len
= htons(8 + len
);
1711 ip
->ip_sum
= ~NetCksum((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
/ 2);
1714 void copy_filename (char *dst
, char *src
, int size
)
1716 if (*src
&& (*src
== '"')) {
1721 while ((--size
> 0) && *src
&& (*src
!= '"')) {
1729 void ip_to_string (IPaddr_t x
, char *s
)
1732 sprintf (s
, "%d.%d.%d.%d",
1733 (int) ((x
>> 24) & 0xff),
1734 (int) ((x
>> 16) & 0xff),
1735 (int) ((x
>> 8) & 0xff), (int) ((x
>> 0) & 0xff)
1739 IPaddr_t
string_to_ip(char *s
)
1748 for (addr
=0, i
=0; i
<4; ++i
) {
1749 ulong val
= s
? simple_strtoul(s
, &e
, 10) : 0;
1751 addr
|= (val
& 0xFF);
1757 return (htonl(addr
));
1760 void VLAN_to_string(ushort x
, char *s
)
1764 if (x
== (ushort
)-1)
1770 sprintf(s
, "%d", x
& VLAN_IDMASK
);
1773 ushort
string_to_VLAN(char *s
)
1778 return htons(VLAN_NONE
);
1780 if (*s
< '0' || *s
> '9')
1783 id
= (ushort
)simple_strtoul(s
, NULL
, 10);
1788 void print_IPaddr (IPaddr_t x
)
1792 ip_to_string (x
, tmp
);
1797 IPaddr_t
getenv_IPaddr (char *var
)
1799 return (string_to_ip(getenv(var
)));
1802 ushort
getenv_VLAN(char *var
)
1804 return (string_to_VLAN(getenv(var
)));