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
)
815 odd
= 1 & (ulong
)buff
;
822 result
+= *((const ushort
*)buff
)++;
823 if (result
& 0x80000000)
824 result
= (result
& 0xFFFF) + (result
>> 16);
828 leftover
= (signed short)(*(const signed char *)buff
);
829 /* * XXX CISCO SUCKS big time! (and blows too) */
830 result
= (result
& 0xffff0000) | ((result
+ leftover
) & 0x0000ffff);
833 result
= (result
& 0xFFFF) + (result
>> 16);
836 result
= ((result
>> 8) & 0xff) | ((result
& 0xff) << 8);
839 /* add up 16-bit and 17-bit words for 17+c bits */
840 result
= (result
& 0xffff) + (result
>> 16);
841 /* add up 16-bit and 2-bit for 16+c bit */
842 result
= (result
& 0xffff) + (result
>> 16);
844 result
= (result
& 0xffff) + (result
>> 16);
847 csum
= ~(ushort
)result
;
849 /* run time endian detection */
850 if (csum
!= htons(csum
)) /* little endian */
856 int CDPSendTrigger(void)
864 #if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \
865 defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM)
870 et
= (Ethernet_t
*)pkt
;
872 /* NOTE: trigger sent not on any VLAN */
874 /* form ethernet header */
875 memcpy(et
->et_dest
, NetCDPAddr
, 6);
876 memcpy(et
->et_src
, NetOurEther
, 6);
878 pkt
+= ETHER_HDR_SIZE
;
881 memcpy((uchar
*)pkt
, CDP_SNAP_hdr
, sizeof(CDP_SNAP_hdr
));
882 pkt
+= sizeof(CDP_SNAP_hdr
);
885 *pkt
++ = 0x02; /* CDP version 2 */
886 *pkt
++ = 180; /* TTL */
887 s
= (volatile ushort
*)pkt
;
889 *s
++ = htons(0); /* checksum (0 for later calculation) */
892 #ifdef CONFIG_CDP_DEVICE_ID
893 *s
++ = htons(CDP_DEVICE_ID_TLV
);
894 *s
++ = htons(CONFIG_CDP_DEVICE_ID
);
895 memset(buf
, 0, sizeof(buf
));
896 sprintf(buf
, CONFIG_CDP_DEVICE_ID_PREFIX
"%02X%02X%02X%02X%02X%02X",
897 NetOurEther
[0] & 0xff, NetOurEther
[1] & 0xff,
898 NetOurEther
[2] & 0xff, NetOurEther
[3] & 0xff,
899 NetOurEther
[4] & 0xff, NetOurEther
[5] & 0xff);
900 memcpy((uchar
*)s
, buf
, 16);
904 #ifdef CONFIG_CDP_PORT_ID
905 *s
++ = htons(CDP_PORT_ID_TLV
);
906 memset(buf
, 0, sizeof(buf
));
907 sprintf(buf
, CONFIG_CDP_PORT_ID
, eth_get_dev_index());
909 if (len
& 1) /* make it even */
911 *s
++ = htons(len
+ 4);
912 memcpy((uchar
*)s
, buf
, len
);
916 #ifdef CONFIG_CDP_CAPABILITIES
917 *s
++ = htons(CDP_CAPABILITIES_TLV
);
919 *(ulong
*)s
= htonl(CONFIG_CDP_CAPABILITIES
);
923 #ifdef CONFIG_CDP_VERSION
924 *s
++ = htons(CDP_VERSION_TLV
);
925 memset(buf
, 0, sizeof(buf
));
926 strcpy(buf
, CONFIG_CDP_VERSION
);
928 if (len
& 1) /* make it even */
930 *s
++ = htons(len
+ 4);
931 memcpy((uchar
*)s
, buf
, len
);
935 #ifdef CONFIG_CDP_PLATFORM
936 *s
++ = htons(CDP_PLATFORM_TLV
);
937 memset(buf
, 0, sizeof(buf
));
938 strcpy(buf
, CONFIG_CDP_PLATFORM
);
940 if (len
& 1) /* make it even */
942 *s
++ = htons(len
+ 4);
943 memcpy((uchar
*)s
, buf
, len
);
947 #ifdef CONFIG_CDP_TRIGGER
948 *s
++ = htons(CDP_TRIGGER_TLV
);
950 *(ulong
*)s
= htonl(CONFIG_CDP_TRIGGER
);
954 #ifdef CONFIG_CDP_POWER_CONSUMPTION
955 *s
++ = htons(CDP_POWER_CONSUMPTION_TLV
);
957 *s
++ = htons(CONFIG_CDP_POWER_CONSUMPTION
);
960 /* length of ethernet packet */
961 len
= (uchar
*)s
- ((uchar
*)NetTxPacket
+ ETHER_HDR_SIZE
);
962 et
->et_protlen
= htons(len
);
964 len
= ETHER_HDR_SIZE
+ sizeof(CDP_SNAP_hdr
);
965 chksum
= CDP_compute_csum((uchar
*)NetTxPacket
+ len
, (uchar
*)s
- (NetTxPacket
+ len
));
970 (void) eth_send(NetTxPacket
, (uchar
*)s
- NetTxPacket
);
980 NetSetTimeout (CDP_TIMEOUT
, CDPTimeout
);
985 /* if not OK try again */
989 NetState
= NETLOOP_SUCCESS
;
993 CDPDummyHandler (uchar
* pkt
, unsigned dest
, unsigned src
, unsigned len
)
999 CDPHandler(const uchar
* pkt
, unsigned len
)
1008 if (len
< sizeof(CDP_SNAP_hdr
) + 4)
1011 /* check for valid CDP SNAP header */
1012 if (memcmp(pkt
, CDP_SNAP_hdr
, sizeof(CDP_SNAP_hdr
)) != 0)
1015 pkt
+= sizeof(CDP_SNAP_hdr
);
1016 len
-= sizeof(CDP_SNAP_hdr
);
1018 /* Version of CDP protocol must be >= 2 and TTL != 0 */
1019 if (pkt
[0] < 0x02 || pkt
[1] == 0)
1022 /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
1024 printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
1027 if (CDP_compute_csum(pkt
, len
) != 0)
1039 ss
= (const ushort
*)pkt
;
1040 type
= ntohs(ss
[0]);
1041 tlen
= ntohs(ss
[1]);
1049 ss
+= 2; /* point ss to the data of the TLV */
1053 case CDP_DEVICE_ID_TLV
:
1055 case CDP_ADDRESS_TLV
:
1057 case CDP_PORT_ID_TLV
:
1059 case CDP_CAPABILITIES_TLV
:
1061 case CDP_VERSION_TLV
:
1063 case CDP_PLATFORM_TLV
:
1065 case CDP_NATIVE_VLAN_TLV
:
1068 case CDP_APPLIANCE_VLAN_TLV
:
1069 t
= (const uchar
*)ss
;
1075 ss
= (const ushort
*)(t
+ 1);
1077 #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
1078 if (applid
== CONFIG_CDP_APPLIANCE_VLAN_TYPE
)
1081 vlan
= ntohs(*ss
); /* XXX will this work; dunno */
1086 case CDP_TRIGGER_TLV
:
1088 case CDP_POWER_CONSUMPTION_TLV
:
1090 case CDP_SYSNAME_TLV
:
1092 case CDP_SYSOBJECT_TLV
:
1094 case CDP_MANAGEMENT_ADDRESS_TLV
:
1099 CDPApplianceVLAN
= vlan
;
1100 CDPNativeVLAN
= nvlan
;
1106 printf("** CDP packet is too short\n");
1110 static void CDPStart(void)
1112 #if defined(CONFIG_NET_MULTI)
1113 printf ("Using %s device\n", eth_get_name());
1118 CDPNativeVLAN
= htons(-1);
1119 CDPApplianceVLAN
= htons(-1);
1121 NetSetTimeout (CDP_TIMEOUT
, CDPTimeout
);
1122 NetSetHandler (CDPDummyHandler
);
1126 #endif /* CFG_CMD_CDP */
1130 NetReceive(volatile uchar
* inpkt
, int len
)
1138 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1141 ushort cti
= 0, vlanid
= VLAN_NONE
, myvlanid
, mynvlanid
;
1144 printf("packet received\n");
1149 et
= (Ethernet_t
*)inpkt
;
1151 /* too small packet? */
1152 if (len
< ETHER_HDR_SIZE
)
1155 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1156 /* keep track if packet is CDP */
1157 iscdp
= memcmp(et
->et_dest
, NetCDPAddr
, 6) == 0;
1160 myvlanid
= ntohs(NetOurVLAN
);
1161 if (myvlanid
== (ushort
)-1)
1162 myvlanid
= VLAN_NONE
;
1163 mynvlanid
= ntohs(NetOurNativeVLAN
);
1164 if (mynvlanid
== (ushort
)-1)
1165 mynvlanid
= VLAN_NONE
;
1167 x
= ntohs(et
->et_protlen
);
1170 printf("packet received\n");
1175 * Got a 802 packet. Check the other protocol field.
1177 x
= ntohs(et
->et_prot
);
1179 ip
= (IP_t
*)(inpkt
+ E802_HDR_SIZE
);
1180 len
-= E802_HDR_SIZE
;
1182 } else if (x
!= PROT_VLAN
) { /* normal packet */
1183 ip
= (IP_t
*)(inpkt
+ ETHER_HDR_SIZE
);
1184 len
-= ETHER_HDR_SIZE
;
1186 } else { /* VLAN packet */
1187 VLAN_Ethernet_t
*vet
= (VLAN_Ethernet_t
*)et
;
1190 printf("VLAN packet received\n");
1192 /* too small packet? */
1193 if (len
< VLAN_ETHER_HDR_SIZE
)
1196 /* if no VLAN active */
1197 if ((ntohs(NetOurVLAN
) & VLAN_IDMASK
) == VLAN_NONE
1198 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1204 cti
= ntohs(vet
->vet_tag
);
1205 vlanid
= cti
& VLAN_IDMASK
;
1206 x
= ntohs(vet
->vet_type
);
1208 ip
= (IP_t
*)(inpkt
+ VLAN_ETHER_HDR_SIZE
);
1209 len
-= VLAN_ETHER_HDR_SIZE
;
1213 printf("Receive from protocol 0x%x\n", x
);
1216 #if (CONFIG_COMMANDS & CFG_CMD_CDP)
1218 CDPHandler((uchar
*)ip
, len
);
1223 if ((myvlanid
& VLAN_IDMASK
) != VLAN_NONE
) {
1224 if (vlanid
== VLAN_NONE
)
1225 vlanid
= (mynvlanid
& VLAN_IDMASK
);
1227 if (vlanid
!= (myvlanid
& VLAN_IDMASK
))
1235 * We have to deal with two types of ARP packets:
1236 * - REQUEST packets will be answered by sending our
1237 * IP address - if we know it.
1238 * - REPLY packates are expected only after we asked
1239 * for the TFTP server's or the gateway's ethernet
1240 * address; so if we receive such a packet, we set
1241 * the server ethernet address
1247 if (len
< ARP_HDR_SIZE
) {
1248 printf("bad length %d < %d\n", len
, ARP_HDR_SIZE
);
1251 if (ntohs(arp
->ar_hrd
) != ARP_ETHER
) {
1254 if (ntohs(arp
->ar_pro
) != PROT_IP
) {
1257 if (arp
->ar_hln
!= 6) {
1260 if (arp
->ar_pln
!= 4) {
1264 if (NetOurIP
== 0) {
1268 if (NetReadIP(&arp
->ar_data
[16]) != NetOurIP
) {
1272 switch (ntohs(arp
->ar_op
)) {
1273 case ARPOP_REQUEST
: /* reply with our IP address */
1275 puts ("Got ARP REQUEST, return our IP\n");
1278 pkt
+= NetSetEther(pkt
, et
->et_src
, PROT_ARP
);
1279 arp
->ar_op
= htons(ARPOP_REPLY
);
1280 memcpy (&arp
->ar_data
[10], &arp
->ar_data
[0], 6);
1281 NetCopyIP(&arp
->ar_data
[16], &arp
->ar_data
[6]);
1282 memcpy (&arp
->ar_data
[ 0], NetOurEther
, 6);
1283 NetCopyIP(&arp
->ar_data
[ 6], &NetOurIP
);
1284 (void) eth_send((uchar
*)et
, (pkt
- (uchar
*)et
) + ARP_HDR_SIZE
);
1287 case ARPOP_REPLY
: /* arp reply */
1288 /* are we waiting for a reply */
1289 if (!NetArpWaitPacketIP
|| !NetArpWaitPacketMAC
)
1292 printf("Got ARP REPLY, set server/gtwy eth addr (%02x:%02x:%02x:%02x:%02x:%02x)\n",
1293 arp
->ar_data
[0], arp
->ar_data
[1],
1294 arp
->ar_data
[2], arp
->ar_data
[3],
1295 arp
->ar_data
[4], arp
->ar_data
[5]);
1298 tmp
= NetReadIP(&arp
->ar_data
[6]);
1300 /* matched waiting packet's address */
1301 if (tmp
== NetArpWaitReplyIP
) {
1305 /* save address for later use */
1306 memcpy(NetArpWaitPacketMAC
, &arp
->ar_data
[0], 6);
1308 #ifdef CONFIG_NETCONSOLE
1309 (*packetHandler
)(0,0,0,0);
1311 /* modify header, and transmit it */
1312 memcpy(((Ethernet_t
*)NetArpWaitTxPacket
)->et_dest
, NetArpWaitPacketMAC
, 6);
1313 (void) eth_send(NetArpWaitTxPacket
, NetArpWaitTxPacketSize
);
1315 /* no arp request pending now */
1316 NetArpWaitPacketIP
= 0;
1317 NetArpWaitTxPacketSize
= 0;
1318 NetArpWaitPacketMAC
= NULL
;
1324 printf("Unexpected ARP opcode 0x%x\n", ntohs(arp
->ar_op
));
1332 puts ("Got RARP\n");
1335 if (len
< ARP_HDR_SIZE
) {
1336 printf("bad length %d < %d\n", len
, ARP_HDR_SIZE
);
1340 if ((ntohs(arp
->ar_op
) != RARPOP_REPLY
) ||
1341 (ntohs(arp
->ar_hrd
) != ARP_ETHER
) ||
1342 (ntohs(arp
->ar_pro
) != PROT_IP
) ||
1343 (arp
->ar_hln
!= 6) || (arp
->ar_pln
!= 4)) {
1345 puts ("invalid RARP header\n");
1347 NetCopyIP(&NetOurIP
, &arp
->ar_data
[16]);
1348 if (NetServerIP
== 0)
1349 NetCopyIP(&NetServerIP
, &arp
->ar_data
[ 6]);
1350 memcpy (NetServerEther
, &arp
->ar_data
[ 0], 6);
1352 (*packetHandler
)(0,0,0,0);
1360 if (len
< IP_HDR_SIZE
) {
1361 debug ("len bad %d < %d\n", len
, IP_HDR_SIZE
);
1364 if (len
< ntohs(ip
->ip_len
)) {
1365 printf("len bad %d < %d\n", len
, ntohs(ip
->ip_len
));
1368 len
= ntohs(ip
->ip_len
);
1370 printf("len=%d, v=%02x\n", len
, ip
->ip_hl_v
& 0xff);
1372 if ((ip
->ip_hl_v
& 0xf0) != 0x40) {
1375 if (ip
->ip_off
& htons(0x1fff)) { /* Can't deal w/ fragments */
1378 if (!NetCksumOk((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
/ 2)) {
1379 puts ("checksum bad\n");
1382 tmp
= NetReadIP(&ip
->ip_dst
);
1383 if (NetOurIP
&& tmp
!= NetOurIP
&& tmp
!= 0xFFFFFFFF) {
1387 * watch for ICMP host redirects
1389 * There is no real handler code (yet). We just watch
1390 * for ICMP host redirect messages. In case anybody
1391 * sees these messages: please contact me
1392 * (wd@denx.de), or - even better - send me the
1393 * necessary fixes :-)
1395 * Note: in all cases where I have seen this so far
1396 * it was a problem with the router configuration,
1397 * for instance when a router was configured in the
1398 * BOOTP reply, but the TFTP server was on the same
1399 * subnet. So this is probably a warning that your
1400 * configuration might be wrong. But I'm not really
1401 * sure if there aren't any other situations.
1403 if (ip
->ip_p
== IPPROTO_ICMP
) {
1404 ICMP_t
*icmph
= (ICMP_t
*)&(ip
->udp_src
);
1406 switch (icmph
->type
) {
1408 if (icmph
->code
!= ICMP_REDIR_HOST
)
1410 puts (" ICMP Host Redirect to ");
1411 print_IPaddr(icmph
->un
.gateway
);
1414 #if (CONFIG_COMMANDS & CFG_CMD_PING)
1415 case ICMP_ECHO_REPLY
:
1417 * IP header OK. Pass the packet to the current handler.
1419 /* XXX point to ip packet */
1420 (*packetHandler
)((uchar
*)ip
, 0, 0, 0);
1426 } else if (ip
->ip_p
!= IPPROTO_UDP
) { /* Only UDP packets */
1430 #ifdef CONFIG_UDP_CHECKSUM
1431 if (ip
->udp_xsum
!= 0) {
1437 xsum
+= (ntohs(ip
->udp_len
));
1438 xsum
+= (ntohl(ip
->ip_src
) >> 16) & 0x0000ffff;
1439 xsum
+= (ntohl(ip
->ip_src
) >> 0) & 0x0000ffff;
1440 xsum
+= (ntohl(ip
->ip_dst
) >> 16) & 0x0000ffff;
1441 xsum
+= (ntohl(ip
->ip_dst
) >> 0) & 0x0000ffff;
1443 sumlen
= ntohs(ip
->udp_len
);
1444 sumptr
= (ushort
*) &(ip
->udp_src
);
1446 while (sumlen
> 1) {
1449 sumdata
= *sumptr
++;
1450 xsum
+= ntohs(sumdata
);
1456 sumdata
= *(unsigned char *) sumptr
;
1457 sumdata
= (sumdata
<< 8) & 0xff00;
1460 while ((xsum
>> 16) != 0) {
1461 xsum
= (xsum
& 0x0000ffff) + ((xsum
>> 16) & 0x0000ffff);
1463 if ((xsum
!= 0x00000000) && (xsum
!= 0x0000ffff)) {
1464 printf(" UDP wrong checksum %08x %08x\n", xsum
, ntohs(ip
->udp_xsum
));
1470 #ifdef CONFIG_NETCONSOLE
1471 nc_input_packet((uchar
*)ip
+IP_HDR_SIZE
,
1474 ntohs(ip
->udp_len
) - 8);
1477 * IP header OK. Pass the packet to the current handler.
1479 (*packetHandler
)((uchar
*)ip
+IP_HDR_SIZE
,
1482 ntohs(ip
->udp_len
) - 8);
1488 /**********************************************************************/
1490 static int net_check_prereq (proto_t protocol
)
1494 #if (CONFIG_COMMANDS & CFG_CMD_PING)
1496 if (NetPingIP
== 0) {
1497 puts ("*** ERROR: ping address not given\n");
1502 #if (CONFIG_COMMANDS & CFG_CMD_SNTP)
1504 if (NetNtpServerIP
== 0) {
1505 puts ("*** ERROR: NTP server address not given\n");
1510 #if (CONFIG_COMMANDS & CFG_CMD_NFS)
1515 if (NetServerIP
== 0) {
1516 puts ("*** ERROR: `serverip' not set\n");
1519 #if (CONFIG_COMMANDS & (CFG_CMD_PING | CFG_CMD_SNTP))
1523 if (NetOurIP
== 0) {
1524 puts ("*** ERROR: `ipaddr' not set\n");
1533 if (memcmp (NetOurEther
, "\0\0\0\0\0\0", 6) == 0) {
1534 #ifdef CONFIG_NET_MULTI
1535 extern int eth_get_dev_index (void);
1536 int num
= eth_get_dev_index ();
1540 puts ("*** ERROR: No ethernet found.\n");
1543 puts ("*** ERROR: `ethaddr' not set\n");
1546 printf ("*** ERROR: `eth%daddr' not set\n",
1554 puts ("*** ERROR: `ethaddr' not set\n");
1562 return (0); /* OK */
1564 /**********************************************************************/
1567 NetCksumOk(uchar
* ptr
, int len
)
1569 return !((NetCksum(ptr
, len
) + 1) & 0xfffe);
1574 NetCksum(uchar
* ptr
, int len
)
1582 xsum
= (xsum
& 0xffff) + (xsum
>> 16);
1583 xsum
= (xsum
& 0xffff) + (xsum
>> 16);
1584 return (xsum
& 0xffff);
1592 myvlanid
= ntohs(NetOurVLAN
);
1593 if (myvlanid
== (ushort
)-1)
1594 myvlanid
= VLAN_NONE
;
1596 return ((myvlanid
& VLAN_IDMASK
) == VLAN_NONE
) ? ETHER_HDR_SIZE
: VLAN_ETHER_HDR_SIZE
;
1600 NetSetEther(volatile uchar
* xet
, uchar
* addr
, uint prot
)
1602 Ethernet_t
*et
= (Ethernet_t
*)xet
;
1605 myvlanid
= ntohs(NetOurVLAN
);
1606 if (myvlanid
== (ushort
)-1)
1607 myvlanid
= VLAN_NONE
;
1609 memcpy (et
->et_dest
, addr
, 6);
1610 memcpy (et
->et_src
, NetOurEther
, 6);
1611 if ((myvlanid
& VLAN_IDMASK
) == VLAN_NONE
) {
1612 et
->et_protlen
= htons(prot
);
1613 return ETHER_HDR_SIZE
;
1615 VLAN_Ethernet_t
*vet
= (VLAN_Ethernet_t
*)xet
;
1617 vet
->vet_vlan_type
= htons(PROT_VLAN
);
1618 vet
->vet_tag
= htons((0 << 5) | (myvlanid
& VLAN_IDMASK
));
1619 vet
->vet_type
= htons(prot
);
1620 return VLAN_ETHER_HDR_SIZE
;
1625 NetSetIP(volatile uchar
* xip
, IPaddr_t dest
, int dport
, int sport
, int len
)
1627 volatile IP_t
*ip
= (IP_t
*)xip
;
1630 * If the data is an odd number of bytes, zero the
1631 * byte after the last byte so that the checksum
1635 xip
[IP_HDR_SIZE
+ len
] = 0;
1638 * Construct an IP and UDP header.
1639 * (need to set no fragment bit - XXX)
1641 ip
->ip_hl_v
= 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
1643 ip
->ip_len
= htons(IP_HDR_SIZE
+ len
);
1644 ip
->ip_id
= htons(NetIPID
++);
1645 ip
->ip_off
= htons(0x4000); /* No fragmentation */
1647 ip
->ip_p
= 17; /* UDP */
1649 NetCopyIP((void*)&ip
->ip_src
, &NetOurIP
); /* already in network byte order */
1650 NetCopyIP((void*)&ip
->ip_dst
, &dest
); /* - "" - */
1651 ip
->udp_src
= htons(sport
);
1652 ip
->udp_dst
= htons(dport
);
1653 ip
->udp_len
= htons(8 + len
);
1655 ip
->ip_sum
= ~NetCksum((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
/ 2);
1658 void copy_filename (uchar
*dst
, uchar
*src
, int size
)
1660 if (*src
&& (*src
== '"')) {
1665 while ((--size
> 0) && *src
&& (*src
!= '"')) {
1671 #endif /* CFG_CMD_NET */
1673 void ip_to_string (IPaddr_t x
, char *s
)
1676 sprintf (s
, "%d.%d.%d.%d",
1677 (int) ((x
>> 24) & 0xff),
1678 (int) ((x
>> 16) & 0xff),
1679 (int) ((x
>> 8) & 0xff), (int) ((x
>> 0) & 0xff)
1683 IPaddr_t
string_to_ip(char *s
)
1692 for (addr
=0, i
=0; i
<4; ++i
) {
1693 ulong val
= s
? simple_strtoul(s
, &e
, 10) : 0;
1695 addr
|= (val
& 0xFF);
1701 return (htonl(addr
));
1704 void VLAN_to_string(ushort x
, char *s
)
1708 if (x
== (ushort
)-1)
1714 sprintf(s
, "%d", x
& VLAN_IDMASK
);
1717 ushort
string_to_VLAN(char *s
)
1722 return htons(VLAN_NONE
);
1724 if (*s
< '0' || *s
> '9')
1727 id
= (ushort
)simple_strtoul(s
, NULL
, 10);
1732 void print_IPaddr (IPaddr_t x
)
1736 ip_to_string (x
, tmp
);
1741 IPaddr_t
getenv_IPaddr (char *var
)
1743 return (string_to_ip(getenv(var
)));
1746 ushort
getenv_VLAN(char *var
)
1748 return (string_to_VLAN(getenv(var
)));