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
)));