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)
92 #if defined(CONFIG_CDP_VERSION)
93 #include <timestamp.h>
95 #if defined(CONFIG_CMD_DNS)
99 DECLARE_GLOBAL_DATA_PTR
;
101 #ifndef CONFIG_ARP_TIMEOUT
102 # define ARP_TIMEOUT 5000UL /* Milliseconds before trying ARP again */
104 # define ARP_TIMEOUT CONFIG_ARP_TIMEOUT
108 #ifndef CONFIG_NET_RETRY_COUNT
109 # define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */
111 # 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
*NetRxPacket
; /* Current receive packet */
140 int NetRxPacketLen
; /* 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 static int NetTryCount
;
200 /**********************************************************************/
202 IPaddr_t NetArpWaitPacketIP
;
203 IPaddr_t NetArpWaitReplyIP
;
204 uchar
*NetArpWaitPacketMAC
; /* MAC address of waiting packet's destination */
205 uchar
*NetArpWaitTxPacket
; /* THE transmit packet */
206 int NetArpWaitTxPacketSize
;
207 uchar NetArpWaitPacketBuf
[PKTSIZE_ALIGN
+ PKTALIGN
];
208 ulong NetArpWaitTimerStart
;
211 void ArpRequest (void)
217 debug("ARP broadcast %d\n", NetArpWaitTry
);
221 pkt
+= NetSetEther (pkt
, NetBcastAddr
, PROT_ARP
);
225 arp
->ar_hrd
= htons (ARP_ETHER
);
226 arp
->ar_pro
= htons (PROT_IP
);
229 arp
->ar_op
= htons (ARPOP_REQUEST
);
231 memcpy (&arp
->ar_data
[0], NetOurEther
, 6); /* source ET addr */
232 NetWriteIP ((uchar
*) & arp
->ar_data
[6], NetOurIP
); /* source IP addr */
233 for (i
= 10; i
< 16; ++i
) {
234 arp
->ar_data
[i
] = 0; /* dest ET addr = 0 */
237 if ((NetArpWaitPacketIP
& NetOurSubnetMask
) !=
238 (NetOurIP
& NetOurSubnetMask
)) {
239 if (NetOurGatewayIP
== 0) {
240 puts ("## Warning: gatewayip needed but not set\n");
241 NetArpWaitReplyIP
= NetArpWaitPacketIP
;
243 NetArpWaitReplyIP
= NetOurGatewayIP
;
246 NetArpWaitReplyIP
= NetArpWaitPacketIP
;
249 NetWriteIP ((uchar
*) & arp
->ar_data
[16], NetArpWaitReplyIP
);
250 (void) eth_send (NetTxPacket
, (pkt
- NetTxPacket
) + ARP_HDR_SIZE
);
253 void ArpTimeoutCheck(void)
257 if (!NetArpWaitPacketIP
)
262 /* check for arp timeout */
263 if ((t
- NetArpWaitTimerStart
) > ARP_TIMEOUT
) {
266 if (NetArpWaitTry
>= ARP_TIMEOUT_COUNT
) {
267 puts ("\nARP Retry count exceeded; starting again\n");
271 NetArpWaitTimerStart
= t
;
278 NetInitLoop(proto_t protocol
)
280 static int env_changed_id
= 0;
282 int env_id
= get_env_id ();
284 /* update only when the environment has changed */
285 if (env_changed_id
!= env_id
) {
286 NetCopyIP(&NetOurIP
, &bd
->bi_ip_addr
);
287 NetOurGatewayIP
= getenv_IPaddr ("gatewayip");
288 NetOurSubnetMask
= getenv_IPaddr ("netmask");
289 NetServerIP
= getenv_IPaddr ("serverip");
290 NetOurNativeVLAN
= getenv_VLAN("nvlan");
291 NetOurVLAN
= getenv_VLAN("vlan");
292 #if defined(CONFIG_CMD_DNS)
293 NetOurDNSIP
= getenv_IPaddr("dnsip");
295 env_changed_id
= env_id
;
301 /**********************************************************************/
303 * Main network processing loop.
307 NetLoop(proto_t protocol
)
311 #ifdef CONFIG_NET_MULTI
316 /* XXX problem with bss workaround */
317 NetArpWaitPacketMAC
= NULL
;
318 NetArpWaitTxPacket
= NULL
;
319 NetArpWaitPacketIP
= 0;
320 NetArpWaitReplyIP
= 0;
321 NetArpWaitTxPacket
= NULL
;
328 * Setup packet buffers, aligned correctly.
330 NetTxPacket
= &PktBuf
[0] + (PKTALIGN
- 1);
331 NetTxPacket
-= (ulong
)NetTxPacket
% PKTALIGN
;
332 for (i
= 0; i
< PKTBUFSRX
; i
++) {
333 NetRxPackets
[i
] = NetTxPacket
+ (i
+1)*PKTSIZE_ALIGN
;
337 if (!NetArpWaitTxPacket
) {
338 NetArpWaitTxPacket
= &NetArpWaitPacketBuf
[0] + (PKTALIGN
- 1);
339 NetArpWaitTxPacket
-= (ulong
)NetArpWaitTxPacket
% PKTALIGN
;
340 NetArpWaitTxPacketSize
= 0;
344 #ifdef CONFIG_NET_MULTI
347 if (eth_init(bd
) < 0) {
353 #ifdef CONFIG_NET_MULTI
354 memcpy (NetOurEther
, eth_get_dev()->enetaddr
, 6);
356 eth_getenv_enetaddr("ethaddr", NetOurEther
);
359 NetState
= NETLOOP_CONTINUE
;
362 * Start the ball rolling with the given start function. From
363 * here on, this code is a state machine driven by received
364 * packets and timer events.
366 NetInitLoop(protocol
);
368 switch (net_check_prereq (protocol
)) {
370 /* network not configured */
374 #ifdef CONFIG_NET_MULTI
376 /* network device not configured */
378 #endif /* CONFIG_NET_MULTI */
381 #ifdef CONFIG_NET_MULTI
386 /* always use ARP to get server ethernet address */
390 #if defined(CONFIG_CMD_DHCP)
394 DhcpRequest(); /* Basically same as BOOTP */
409 #if defined(CONFIG_CMD_PING)
414 #if defined(CONFIG_CMD_NFS)
419 #if defined(CONFIG_CMD_CDP)
424 #ifdef CONFIG_NETCONSOLE
429 #if defined(CONFIG_CMD_SNTP)
434 #if defined(CONFIG_CMD_DNS)
443 NetBootFileXferSize
= 0;
447 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
448 #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
450 * Echo the inverted link state to the fault LED.
452 if(miiphy_link(eth_get_dev()->name
, CONFIG_SYS_FAULT_MII_ADDR
)) {
453 status_led_set (STATUS_LED_RED
, STATUS_LED_OFF
);
455 status_led_set (STATUS_LED_RED
, STATUS_LED_ON
);
457 #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
458 #endif /* CONFIG_MII, ... */
461 * Main packet reception loop. Loop receiving packets until
462 * someone sets `NetState' to a state that terminates.
466 #ifdef CONFIG_SHOW_ACTIVITY
468 extern void show_activity(int arg
);
473 * Check the ethernet for a new packet. The ethernet
474 * receive routine will process it.
479 * Abort if ctrl-c was pressed.
490 * Check for a timeout, and run the timeout handler
493 if (timeHandler
&& ((get_timer(0) - timeStart
) > timeDelta
)) {
496 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
497 # if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
498 defined(CONFIG_STATUS_LED) && \
499 defined(STATUS_LED_RED)
501 * Echo the inverted link state to the fault LED.
503 if(miiphy_link(eth_get_dev()->name
, CONFIG_SYS_FAULT_MII_ADDR
)) {
504 status_led_set (STATUS_LED_RED
, STATUS_LED_OFF
);
506 status_led_set (STATUS_LED_RED
, STATUS_LED_ON
);
508 # endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
509 #endif /* CONFIG_MII, ... */
511 timeHandler
= (thand_f
*)0;
518 case NETLOOP_RESTART
:
519 #ifdef CONFIG_NET_MULTI
524 case NETLOOP_SUCCESS
:
525 if (NetBootFileXferSize
> 0) {
527 printf("Bytes transferred = %ld (%lx hex)\n",
529 NetBootFileXferSize
);
530 sprintf(buf
, "%lX", NetBootFileXferSize
);
531 setenv("filesize", buf
);
533 sprintf(buf
, "%lX", (unsigned long)load_addr
);
534 setenv("fileaddr", buf
);
537 return NetBootFileXferSize
;
545 /**********************************************************************/
548 startAgainTimeout(void)
550 NetState
= NETLOOP_RESTART
;
554 startAgainHandler(uchar
* pkt
, unsigned dest
, unsigned src
, unsigned len
)
556 /* Totally ignore the packet */
559 void NetStartAgain (void)
562 int retry_forever
= 0;
563 unsigned long retrycnt
= 0;
565 nretry
= getenv("netretry");
567 if (!strcmp(nretry
, "yes"))
569 else if (!strcmp(nretry
, "no"))
571 else if (!strcmp(nretry
, "once"))
574 retrycnt
= simple_strtoul(nretry
, NULL
, 0);
578 if ((!retry_forever
) && (NetTryCount
>= retrycnt
)) {
580 NetState
= NETLOOP_FAIL
;
586 #ifndef CONFIG_NET_MULTI
587 NetSetTimeout (10000UL, startAgainTimeout
);
588 NetSetHandler (startAgainHandler
);
589 #else /* !CONFIG_NET_MULTI*/
591 #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
592 eth_try_another (!NetRestarted
);
595 if (NetRestartWrap
) {
598 NetSetTimeout (10000UL, 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) {
656 debug("sending ARP for %08lx\n", dest
);
658 NetArpWaitPacketIP
= dest
;
659 NetArpWaitPacketMAC
= ether
;
661 pkt
= NetArpWaitTxPacket
;
662 pkt
+= NetSetEther (pkt
, NetArpWaitPacketMAC
, PROT_IP
);
664 NetSetIP (pkt
, dest
, dport
, sport
, len
);
665 memcpy(pkt
+ IP_HDR_SIZE
, (uchar
*)NetTxPacket
+ (pkt
- (uchar
*)NetArpWaitTxPacket
) + IP_HDR_SIZE
, len
);
667 /* size of the waiting packet */
668 NetArpWaitTxPacketSize
= (pkt
- NetArpWaitTxPacket
) + IP_HDR_SIZE
+ len
;
670 /* and do the ARP request */
672 NetArpWaitTimerStart
= get_timer(0);
674 return 1; /* waiting */
677 debug("sending UDP to %08lx/%pM\n", dest
, ether
);
679 pkt
= (uchar
*)NetTxPacket
;
680 pkt
+= NetSetEther (pkt
, ether
, PROT_IP
);
681 NetSetIP (pkt
, dest
, dport
, sport
, len
);
682 (void) eth_send(NetTxPacket
, (pkt
- NetTxPacket
) + IP_HDR_SIZE
+ len
);
684 return 0; /* transmitted */
687 #if defined(CONFIG_CMD_PING)
688 static ushort PingSeqNo
;
697 /* XXX always send arp request */
699 memcpy(mac
, NetEtherNullAddr
, 6);
701 debug("sending ARP for %08lx\n", NetPingIP
);
703 NetArpWaitPacketIP
= NetPingIP
;
704 NetArpWaitPacketMAC
= mac
;
706 pkt
= NetArpWaitTxPacket
;
707 pkt
+= NetSetEther(pkt
, mac
, PROT_IP
);
709 ip
= (volatile IP_t
*)pkt
;
712 * Construct an IP and ICMP header. (need to set no fragment bit - XXX)
714 ip
->ip_hl_v
= 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
716 ip
->ip_len
= htons(IP_HDR_SIZE_NO_UDP
+ 8);
717 ip
->ip_id
= htons(NetIPID
++);
718 ip
->ip_off
= htons(IP_FLAGS_DFRAG
); /* Don't fragment */
720 ip
->ip_p
= 0x01; /* ICMP */
722 NetCopyIP((void*)&ip
->ip_src
, &NetOurIP
); /* already in network byte order */
723 NetCopyIP((void*)&ip
->ip_dst
, &NetPingIP
); /* - "" - */
724 ip
->ip_sum
= ~NetCksum((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
/ 2);
726 s
= &ip
->udp_src
; /* XXX ICMP starts here */
727 s
[0] = htons(0x0800); /* echo-request, code */
728 s
[1] = 0; /* checksum */
729 s
[2] = 0; /* identifier */
730 s
[3] = htons(PingSeqNo
++); /* sequence number */
731 s
[1] = ~NetCksum((uchar
*)s
, 8/2);
733 /* size of the waiting packet */
734 NetArpWaitTxPacketSize
= (pkt
- NetArpWaitTxPacket
) + IP_HDR_SIZE_NO_UDP
+ 8;
736 /* and do the ARP request */
738 NetArpWaitTimerStart
= get_timer(0);
740 return 1; /* waiting */
747 NetState
= NETLOOP_FAIL
; /* we did not get the reply */
751 PingHandler (uchar
* pkt
, unsigned dest
, unsigned src
, unsigned len
)
754 volatile IP_t
*ip
= (volatile IP_t
*)pkt
;
756 tmp
= NetReadIP((void *)&ip
->ip_src
);
757 if (tmp
!= NetPingIP
)
760 NetState
= NETLOOP_SUCCESS
;
763 static void PingStart(void)
765 #if defined(CONFIG_NET_MULTI)
766 printf ("Using %s device\n", eth_get_name());
767 #endif /* CONFIG_NET_MULTI */
768 NetSetTimeout (10000UL, PingTimeout
);
769 NetSetHandler (PingHandler
);
775 #if defined(CONFIG_CMD_CDP)
777 #define CDP_DEVICE_ID_TLV 0x0001
778 #define CDP_ADDRESS_TLV 0x0002
779 #define CDP_PORT_ID_TLV 0x0003
780 #define CDP_CAPABILITIES_TLV 0x0004
781 #define CDP_VERSION_TLV 0x0005
782 #define CDP_PLATFORM_TLV 0x0006
783 #define CDP_NATIVE_VLAN_TLV 0x000a
784 #define CDP_APPLIANCE_VLAN_TLV 0x000e
785 #define CDP_TRIGGER_TLV 0x000f
786 #define CDP_POWER_CONSUMPTION_TLV 0x0010
787 #define CDP_SYSNAME_TLV 0x0014
788 #define CDP_SYSOBJECT_TLV 0x0015
789 #define CDP_MANAGEMENT_ADDRESS_TLV 0x0016
791 #define CDP_TIMEOUT 250UL /* one packet every 250ms */
796 ushort CDPNativeVLAN
;
797 ushort CDPApplianceVLAN
;
799 static const uchar CDP_SNAP_hdr
[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
801 static ushort
CDP_compute_csum(const uchar
*buff
, ushort len
)
810 odd
= 1 & (ulong
)buff
;
820 if (result
& 0x80000000)
821 result
= (result
& 0xFFFF) + (result
>> 16);
825 leftover
= (signed short)(*(const signed char *)buff
);
826 /* CISCO SUCKS big time! (and blows too):
827 * CDP uses the IP checksum algorithm with a twist;
828 * for the last byte it *sign* extends and sums.
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 sprintf(buf
, CONFIG_CDP_DEVICE_ID_PREFIX
"%pm", NetOurEther
);
896 memcpy((uchar
*)s
, buf
, 16);
900 #ifdef CONFIG_CDP_PORT_ID
901 *s
++ = htons(CDP_PORT_ID_TLV
);
902 memset(buf
, 0, sizeof(buf
));
903 sprintf(buf
, CONFIG_CDP_PORT_ID
, eth_get_dev_index());
905 if (len
& 1) /* make it even */
907 *s
++ = htons(len
+ 4);
908 memcpy((uchar
*)s
, buf
, len
);
912 #ifdef CONFIG_CDP_CAPABILITIES
913 *s
++ = htons(CDP_CAPABILITIES_TLV
);
915 *(ulong
*)s
= htonl(CONFIG_CDP_CAPABILITIES
);
919 #ifdef CONFIG_CDP_VERSION
920 *s
++ = htons(CDP_VERSION_TLV
);
921 memset(buf
, 0, sizeof(buf
));
922 strcpy(buf
, CONFIG_CDP_VERSION
);
924 if (len
& 1) /* make it even */
926 *s
++ = htons(len
+ 4);
927 memcpy((uchar
*)s
, buf
, len
);
931 #ifdef CONFIG_CDP_PLATFORM
932 *s
++ = htons(CDP_PLATFORM_TLV
);
933 memset(buf
, 0, sizeof(buf
));
934 strcpy(buf
, CONFIG_CDP_PLATFORM
);
936 if (len
& 1) /* make it even */
938 *s
++ = htons(len
+ 4);
939 memcpy((uchar
*)s
, buf
, len
);
943 #ifdef CONFIG_CDP_TRIGGER
944 *s
++ = htons(CDP_TRIGGER_TLV
);
946 *(ulong
*)s
= htonl(CONFIG_CDP_TRIGGER
);
950 #ifdef CONFIG_CDP_POWER_CONSUMPTION
951 *s
++ = htons(CDP_POWER_CONSUMPTION_TLV
);
953 *s
++ = htons(CONFIG_CDP_POWER_CONSUMPTION
);
956 /* length of ethernet packet */
957 len
= (uchar
*)s
- ((uchar
*)NetTxPacket
+ ETHER_HDR_SIZE
);
958 et
->et_protlen
= htons(len
);
960 len
= ETHER_HDR_SIZE
+ sizeof(CDP_SNAP_hdr
);
961 chksum
= CDP_compute_csum((uchar
*)NetTxPacket
+ len
, (uchar
*)s
- (NetTxPacket
+ len
));
966 (void) eth_send(NetTxPacket
, (uchar
*)s
- NetTxPacket
);
976 NetSetTimeout (CDP_TIMEOUT
, CDPTimeout
);
981 /* if not OK try again */
985 NetState
= NETLOOP_SUCCESS
;
989 CDPDummyHandler (uchar
* pkt
, unsigned dest
, unsigned src
, unsigned len
)
995 CDPHandler(const uchar
* pkt
, unsigned len
)
1004 if (len
< sizeof(CDP_SNAP_hdr
) + 4)
1007 /* check for valid CDP SNAP header */
1008 if (memcmp(pkt
, CDP_SNAP_hdr
, sizeof(CDP_SNAP_hdr
)) != 0)
1011 pkt
+= sizeof(CDP_SNAP_hdr
);
1012 len
-= sizeof(CDP_SNAP_hdr
);
1014 /* Version of CDP protocol must be >= 2 and TTL != 0 */
1015 if (pkt
[0] < 0x02 || pkt
[1] == 0)
1018 /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
1020 printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
1023 if (CDP_compute_csum(pkt
, len
) != 0)
1035 ss
= (const ushort
*)pkt
;
1036 type
= ntohs(ss
[0]);
1037 tlen
= ntohs(ss
[1]);
1045 ss
+= 2; /* point ss to the data of the TLV */
1049 case CDP_DEVICE_ID_TLV
:
1051 case CDP_ADDRESS_TLV
:
1053 case CDP_PORT_ID_TLV
:
1055 case CDP_CAPABILITIES_TLV
:
1057 case CDP_VERSION_TLV
:
1059 case CDP_PLATFORM_TLV
:
1061 case CDP_NATIVE_VLAN_TLV
:
1064 case CDP_APPLIANCE_VLAN_TLV
:
1065 t
= (const uchar
*)ss
;
1071 ss
= (const ushort
*)(t
+ 1);
1073 #ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
1074 if (applid
== CONFIG_CDP_APPLIANCE_VLAN_TYPE
)
1077 vlan
= ntohs(*ss
); /* XXX will this work; dunno */
1082 case CDP_TRIGGER_TLV
:
1084 case CDP_POWER_CONSUMPTION_TLV
:
1086 case CDP_SYSNAME_TLV
:
1088 case CDP_SYSOBJECT_TLV
:
1090 case CDP_MANAGEMENT_ADDRESS_TLV
:
1095 CDPApplianceVLAN
= vlan
;
1096 CDPNativeVLAN
= nvlan
;
1102 printf("** CDP packet is too short\n");
1106 static void CDPStart(void)
1108 #if defined(CONFIG_NET_MULTI)
1109 printf ("Using %s device\n", eth_get_name());
1114 CDPNativeVLAN
= htons(-1);
1115 CDPApplianceVLAN
= htons(-1);
1117 NetSetTimeout (CDP_TIMEOUT
, CDPTimeout
);
1118 NetSetHandler (CDPDummyHandler
);
1124 #ifdef CONFIG_IP_DEFRAG
1126 * This function collects fragments in a single packet, according
1127 * to the algorithm in RFC815. It returns NULL or the pointer to
1128 * a complete packet, in static storage
1130 #ifndef CONFIG_NET_MAXDEFRAG
1131 #define CONFIG_NET_MAXDEFRAG 16384
1134 * MAXDEFRAG, above, is chosen in the config file and is real data
1135 * so we need to add the NFS overhead, which is more than TFTP.
1136 * To use sizeof in the internal unnamed structures, we need a real
1137 * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately).
1138 * The compiler doesn't complain nor allocates the actual structure
1140 static struct rpc_t rpc_specimen
;
1141 #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply))
1143 #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE_NO_UDP)
1146 * this is the packet being assembled, either data or frag control.
1147 * Fragments go by 8 bytes, so this union must be 8 bytes long
1150 /* first_byte is address of this structure */
1151 u16 last_byte
; /* last byte in this hole + 1 (begin of next hole) */
1152 u16 next_hole
; /* index of next (in 8-b blocks), 0 == none */
1153 u16 prev_hole
; /* index of prev, 0 == none */
1157 static IP_t
*__NetDefragment(IP_t
*ip
, int *lenp
)
1159 static uchar pkt_buff
[IP_PKTSIZE
] __attribute__((aligned(PKTALIGN
)));
1160 static u16 first_hole
, total_len
;
1161 struct hole
*payload
, *thisfrag
, *h
, *newh
;
1162 IP_t
*localip
= (IP_t
*)pkt_buff
;
1163 uchar
*indata
= (uchar
*)ip
;
1164 int offset8
, start
, len
, done
= 0;
1165 u16 ip_off
= ntohs(ip
->ip_off
);
1167 /* payload starts after IP header, this fragment is in there */
1168 payload
= (struct hole
*)(pkt_buff
+ IP_HDR_SIZE_NO_UDP
);
1169 offset8
= (ip_off
& IP_OFFS
);
1170 thisfrag
= payload
+ offset8
;
1171 start
= offset8
* 8;
1172 len
= ntohs(ip
->ip_len
) - IP_HDR_SIZE_NO_UDP
;
1174 if (start
+ len
> IP_MAXUDP
) /* fragment extends too far */
1177 if (!total_len
|| localip
->ip_id
!= ip
->ip_id
) {
1178 /* new (or different) packet, reset structs */
1180 payload
[0].last_byte
= ~0;
1181 payload
[0].next_hole
= 0;
1182 payload
[0].prev_hole
= 0;
1184 /* any IP header will work, copy the first we received */
1185 memcpy(localip
, ip
, IP_HDR_SIZE_NO_UDP
);
1189 * What follows is the reassembly algorithm. We use the payload
1190 * array as a linked list of hole descriptors, as each hole starts
1191 * at a multiple of 8 bytes. However, last byte can be whatever value,
1192 * so it is represented as byte count, not as 8-byte blocks.
1195 h
= payload
+ first_hole
;
1196 while (h
->last_byte
< start
) {
1197 if (!h
->next_hole
) {
1198 /* no hole that far away */
1201 h
= payload
+ h
->next_hole
;
1204 if (offset8
+ (len
/ 8) <= h
- payload
) {
1205 /* no overlap with holes (dup fragment?) */
1209 if (!(ip_off
& IP_FLAGS_MFRAG
)) {
1210 /* no more fragmentss: truncate this (last) hole */
1211 total_len
= start
+ len
;
1212 h
->last_byte
= start
+ len
;
1216 * There is some overlap: fix the hole list. This code doesn't
1217 * deal with a fragment that overlaps with two different holes
1218 * (thus being a superset of a previously-received fragment).
1221 if ( (h
>= thisfrag
) && (h
->last_byte
<= start
+ len
) ) {
1222 /* complete overlap with hole: remove hole */
1223 if (!h
->prev_hole
&& !h
->next_hole
) {
1224 /* last remaining hole */
1226 } else if (!h
->prev_hole
) {
1228 first_hole
= h
->next_hole
;
1229 payload
[h
->next_hole
].prev_hole
= 0;
1230 } else if (!h
->next_hole
) {
1232 payload
[h
->prev_hole
].next_hole
= 0;
1234 /* in the middle of the list */
1235 payload
[h
->next_hole
].prev_hole
= h
->prev_hole
;
1236 payload
[h
->prev_hole
].next_hole
= h
->next_hole
;
1239 } else if (h
->last_byte
<= start
+ len
) {
1240 /* overlaps with final part of the hole: shorten this hole */
1241 h
->last_byte
= start
;
1243 } else if (h
>= thisfrag
) {
1244 /* overlaps with initial part of the hole: move this hole */
1245 newh
= thisfrag
+ (len
/ 8);
1249 payload
[h
->next_hole
].prev_hole
= (h
- payload
);
1251 payload
[h
->prev_hole
].next_hole
= (h
- payload
);
1253 first_hole
= (h
- payload
);
1256 /* fragment sits in the middle: split the hole */
1257 newh
= thisfrag
+ (len
/ 8);
1259 h
->last_byte
= start
;
1260 h
->next_hole
= (newh
- payload
);
1261 newh
->prev_hole
= (h
- payload
);
1262 if (newh
->next_hole
)
1263 payload
[newh
->next_hole
].prev_hole
= (newh
- payload
);
1266 /* finally copy this fragment and possibly return whole packet */
1267 memcpy((uchar
*)thisfrag
, indata
+ IP_HDR_SIZE_NO_UDP
, len
);
1271 localip
->ip_len
= htons(total_len
);
1272 *lenp
= total_len
+ IP_HDR_SIZE_NO_UDP
;
1276 static inline IP_t
*NetDefragment(IP_t
*ip
, int *lenp
)
1278 u16 ip_off
= ntohs(ip
->ip_off
);
1279 if (!(ip_off
& (IP_OFFS
| IP_FLAGS_MFRAG
)))
1280 return ip
; /* not a fragment */
1281 return __NetDefragment(ip
, lenp
);
1284 #else /* !CONFIG_IP_DEFRAG */
1286 static inline IP_t
*NetDefragment(IP_t
*ip
, int *lenp
)
1288 u16 ip_off
= ntohs(ip
->ip_off
);
1289 if (!(ip_off
& (IP_OFFS
| IP_FLAGS_MFRAG
)))
1290 return ip
; /* not a fragment */
1296 NetReceive(volatile uchar
* inpkt
, int len
)
1304 #if defined(CONFIG_CMD_CDP)
1307 ushort cti
= 0, vlanid
= VLAN_NONE
, myvlanid
, mynvlanid
;
1309 debug("packet received\n");
1311 NetRxPacket
= inpkt
;
1312 NetRxPacketLen
= len
;
1313 et
= (Ethernet_t
*)inpkt
;
1315 /* too small packet? */
1316 if (len
< ETHER_HDR_SIZE
)
1321 (*push_packet
)(inpkt
, len
);
1326 #if defined(CONFIG_CMD_CDP)
1327 /* keep track if packet is CDP */
1328 iscdp
= memcmp(et
->et_dest
, NetCDPAddr
, 6) == 0;
1331 myvlanid
= ntohs(NetOurVLAN
);
1332 if (myvlanid
== (ushort
)-1)
1333 myvlanid
= VLAN_NONE
;
1334 mynvlanid
= ntohs(NetOurNativeVLAN
);
1335 if (mynvlanid
== (ushort
)-1)
1336 mynvlanid
= VLAN_NONE
;
1338 x
= ntohs(et
->et_protlen
);
1340 debug("packet received\n");
1344 * Got a 802 packet. Check the other protocol field.
1346 x
= ntohs(et
->et_prot
);
1348 ip
= (IP_t
*)(inpkt
+ E802_HDR_SIZE
);
1349 len
-= E802_HDR_SIZE
;
1351 } else if (x
!= PROT_VLAN
) { /* normal packet */
1352 ip
= (IP_t
*)(inpkt
+ ETHER_HDR_SIZE
);
1353 len
-= ETHER_HDR_SIZE
;
1355 } else { /* VLAN packet */
1356 VLAN_Ethernet_t
*vet
= (VLAN_Ethernet_t
*)et
;
1358 debug("VLAN packet received\n");
1360 /* too small packet? */
1361 if (len
< VLAN_ETHER_HDR_SIZE
)
1364 /* if no VLAN active */
1365 if ((ntohs(NetOurVLAN
) & VLAN_IDMASK
) == VLAN_NONE
1366 #if defined(CONFIG_CMD_CDP)
1372 cti
= ntohs(vet
->vet_tag
);
1373 vlanid
= cti
& VLAN_IDMASK
;
1374 x
= ntohs(vet
->vet_type
);
1376 ip
= (IP_t
*)(inpkt
+ VLAN_ETHER_HDR_SIZE
);
1377 len
-= VLAN_ETHER_HDR_SIZE
;
1380 debug("Receive from protocol 0x%x\n", x
);
1382 #if defined(CONFIG_CMD_CDP)
1384 CDPHandler((uchar
*)ip
, len
);
1389 if ((myvlanid
& VLAN_IDMASK
) != VLAN_NONE
) {
1390 if (vlanid
== VLAN_NONE
)
1391 vlanid
= (mynvlanid
& VLAN_IDMASK
);
1393 if (vlanid
!= (myvlanid
& VLAN_IDMASK
))
1401 * We have to deal with two types of ARP packets:
1402 * - REQUEST packets will be answered by sending our
1403 * IP address - if we know it.
1404 * - REPLY packates are expected only after we asked
1405 * for the TFTP server's or the gateway's ethernet
1406 * address; so if we receive such a packet, we set
1407 * the server ethernet address
1412 if (len
< ARP_HDR_SIZE
) {
1413 printf("bad length %d < %d\n", len
, ARP_HDR_SIZE
);
1416 if (ntohs(arp
->ar_hrd
) != ARP_ETHER
) {
1419 if (ntohs(arp
->ar_pro
) != PROT_IP
) {
1422 if (arp
->ar_hln
!= 6) {
1425 if (arp
->ar_pln
!= 4) {
1429 if (NetOurIP
== 0) {
1433 if (NetReadIP(&arp
->ar_data
[16]) != NetOurIP
) {
1437 switch (ntohs(arp
->ar_op
)) {
1438 case ARPOP_REQUEST
: /* reply with our IP address */
1439 debug("Got ARP REQUEST, return our IP\n");
1441 pkt
+= NetSetEther(pkt
, et
->et_src
, PROT_ARP
);
1442 arp
->ar_op
= htons(ARPOP_REPLY
);
1443 memcpy (&arp
->ar_data
[10], &arp
->ar_data
[0], 6);
1444 NetCopyIP(&arp
->ar_data
[16], &arp
->ar_data
[6]);
1445 memcpy (&arp
->ar_data
[ 0], NetOurEther
, 6);
1446 NetCopyIP(&arp
->ar_data
[ 6], &NetOurIP
);
1447 (void) eth_send((uchar
*)et
, (pkt
- (uchar
*)et
) + ARP_HDR_SIZE
);
1450 case ARPOP_REPLY
: /* arp reply */
1451 /* are we waiting for a reply */
1452 if (!NetArpWaitPacketIP
|| !NetArpWaitPacketMAC
)
1455 #ifdef CONFIG_KEEP_SERVERADDR
1456 if (NetServerIP
== NetArpWaitPacketIP
) {
1458 sprintf(buf
, "%pM", arp
->ar_data
);
1459 setenv("serveraddr", buf
);
1463 debug("Got ARP REPLY, set server/gtwy eth addr (%pM)\n",
1466 tmp
= NetReadIP(&arp
->ar_data
[6]);
1468 /* matched waiting packet's address */
1469 if (tmp
== NetArpWaitReplyIP
) {
1471 /* save address for later use */
1472 memcpy(NetArpWaitPacketMAC
, &arp
->ar_data
[0], 6);
1474 #ifdef CONFIG_NETCONSOLE
1475 (*packetHandler
)(0,0,0,0);
1477 /* modify header, and transmit it */
1478 memcpy(((Ethernet_t
*)NetArpWaitTxPacket
)->et_dest
, NetArpWaitPacketMAC
, 6);
1479 (void) eth_send(NetArpWaitTxPacket
, NetArpWaitTxPacketSize
);
1481 /* no arp request pending now */
1482 NetArpWaitPacketIP
= 0;
1483 NetArpWaitTxPacketSize
= 0;
1484 NetArpWaitPacketMAC
= NULL
;
1489 debug("Unexpected ARP opcode 0x%x\n", ntohs(arp
->ar_op
));
1495 debug("Got RARP\n");
1497 if (len
< ARP_HDR_SIZE
) {
1498 printf("bad length %d < %d\n", len
, ARP_HDR_SIZE
);
1502 if ((ntohs(arp
->ar_op
) != RARPOP_REPLY
) ||
1503 (ntohs(arp
->ar_hrd
) != ARP_ETHER
) ||
1504 (ntohs(arp
->ar_pro
) != PROT_IP
) ||
1505 (arp
->ar_hln
!= 6) || (arp
->ar_pln
!= 4)) {
1507 puts ("invalid RARP header\n");
1509 NetCopyIP(&NetOurIP
, &arp
->ar_data
[16]);
1510 if (NetServerIP
== 0)
1511 NetCopyIP(&NetServerIP
, &arp
->ar_data
[ 6]);
1512 memcpy (NetServerEther
, &arp
->ar_data
[ 0], 6);
1514 (*packetHandler
)(0,0,0,0);
1520 /* Before we start poking the header, make sure it is there */
1521 if (len
< IP_HDR_SIZE
) {
1522 debug("len bad %d < %lu\n", len
, (ulong
)IP_HDR_SIZE
);
1525 /* Check the packet length */
1526 if (len
< ntohs(ip
->ip_len
)) {
1527 printf("len bad %d < %d\n", len
, ntohs(ip
->ip_len
));
1530 len
= ntohs(ip
->ip_len
);
1531 debug("len=%d, v=%02x\n", len
, ip
->ip_hl_v
& 0xff);
1533 /* Can't deal with anything except IPv4 */
1534 if ((ip
->ip_hl_v
& 0xf0) != 0x40) {
1537 /* Can't deal with IP options (headers != 20 bytes) */
1538 if ((ip
->ip_hl_v
& 0x0f) > 0x05) {
1541 /* Check the Checksum of the header */
1542 if (!NetCksumOk((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
/ 2)) {
1543 puts ("checksum bad\n");
1546 /* If it is not for us, ignore it */
1547 tmp
= NetReadIP(&ip
->ip_dst
);
1548 if (NetOurIP
&& tmp
!= NetOurIP
&& tmp
!= 0xFFFFFFFF) {
1549 #ifdef CONFIG_MCAST_TFTP
1550 if (Mcast_addr
!= tmp
)
1555 * The function returns the unchanged packet if it's not
1556 * a fragment, and either the complete packet or NULL if
1557 * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL)
1559 if (!(ip
= NetDefragment(ip
, &len
)))
1562 * watch for ICMP host redirects
1564 * There is no real handler code (yet). We just watch
1565 * for ICMP host redirect messages. In case anybody
1566 * sees these messages: please contact me
1567 * (wd@denx.de), or - even better - send me the
1568 * necessary fixes :-)
1570 * Note: in all cases where I have seen this so far
1571 * it was a problem with the router configuration,
1572 * for instance when a router was configured in the
1573 * BOOTP reply, but the TFTP server was on the same
1574 * subnet. So this is probably a warning that your
1575 * configuration might be wrong. But I'm not really
1576 * sure if there aren't any other situations.
1578 if (ip
->ip_p
== IPPROTO_ICMP
) {
1579 ICMP_t
*icmph
= (ICMP_t
*)&(ip
->udp_src
);
1581 switch (icmph
->type
) {
1583 if (icmph
->code
!= ICMP_REDIR_HOST
)
1585 printf (" ICMP Host Redirect to %pI4 ", &icmph
->un
.gateway
);
1587 #if defined(CONFIG_CMD_PING)
1588 case ICMP_ECHO_REPLY
:
1590 * IP header OK. Pass the packet to the current handler.
1592 /* XXX point to ip packet */
1593 (*packetHandler
)((uchar
*)ip
, 0, 0, 0);
1595 case ICMP_ECHO_REQUEST
:
1596 debug("Got ICMP ECHO REQUEST, return %d bytes \n",
1597 ETHER_HDR_SIZE
+ len
);
1599 memcpy (&et
->et_dest
[0], &et
->et_src
[0], 6);
1600 memcpy (&et
->et_src
[ 0], NetOurEther
, 6);
1604 NetCopyIP((void*)&ip
->ip_dst
, &ip
->ip_src
);
1605 NetCopyIP((void*)&ip
->ip_src
, &NetOurIP
);
1606 ip
->ip_sum
= ~NetCksum((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
>> 1);
1608 icmph
->type
= ICMP_ECHO_REPLY
;
1609 icmph
->checksum
= 0;
1610 icmph
->checksum
= ~NetCksum((uchar
*)icmph
,
1611 (len
- IP_HDR_SIZE_NO_UDP
) >> 1);
1612 (void) eth_send((uchar
*)et
, ETHER_HDR_SIZE
+ len
);
1618 } else if (ip
->ip_p
!= IPPROTO_UDP
) { /* Only UDP packets */
1622 #ifdef CONFIG_UDP_CHECKSUM
1623 if (ip
->udp_xsum
!= 0) {
1629 xsum
+= (ntohs(ip
->udp_len
));
1630 xsum
+= (ntohl(ip
->ip_src
) >> 16) & 0x0000ffff;
1631 xsum
+= (ntohl(ip
->ip_src
) >> 0) & 0x0000ffff;
1632 xsum
+= (ntohl(ip
->ip_dst
) >> 16) & 0x0000ffff;
1633 xsum
+= (ntohl(ip
->ip_dst
) >> 0) & 0x0000ffff;
1635 sumlen
= ntohs(ip
->udp_len
);
1636 sumptr
= (ushort
*) &(ip
->udp_src
);
1638 while (sumlen
> 1) {
1641 sumdata
= *sumptr
++;
1642 xsum
+= ntohs(sumdata
);
1648 sumdata
= *(unsigned char *) sumptr
;
1649 sumdata
= (sumdata
<< 8) & 0xff00;
1652 while ((xsum
>> 16) != 0) {
1653 xsum
= (xsum
& 0x0000ffff) + ((xsum
>> 16) & 0x0000ffff);
1655 if ((xsum
!= 0x00000000) && (xsum
!= 0x0000ffff)) {
1656 printf(" UDP wrong checksum %08lx %08x\n",
1657 xsum
, ntohs(ip
->udp_xsum
));
1664 #ifdef CONFIG_NETCONSOLE
1665 nc_input_packet((uchar
*)ip
+IP_HDR_SIZE
,
1668 ntohs(ip
->udp_len
) - 8);
1671 * IP header OK. Pass the packet to the current handler.
1673 (*packetHandler
)((uchar
*)ip
+IP_HDR_SIZE
,
1676 ntohs(ip
->udp_len
) - 8);
1682 /**********************************************************************/
1684 static int net_check_prereq (proto_t protocol
)
1688 #if defined(CONFIG_CMD_PING)
1690 if (NetPingIP
== 0) {
1691 puts ("*** ERROR: ping address not given\n");
1696 #if defined(CONFIG_CMD_SNTP)
1698 if (NetNtpServerIP
== 0) {
1699 puts ("*** ERROR: NTP server address not given\n");
1704 #if defined(CONFIG_CMD_DNS)
1706 if (NetOurDNSIP
== 0) {
1707 puts("*** ERROR: DNS server address not given\n");
1712 #if defined(CONFIG_CMD_NFS)
1717 if (NetServerIP
== 0) {
1718 puts ("*** ERROR: `serverip' not set\n");
1721 #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP)
1725 if (NetOurIP
== 0) {
1726 puts ("*** ERROR: `ipaddr' not set\n");
1735 if (memcmp (NetOurEther
, "\0\0\0\0\0\0", 6) == 0) {
1736 #ifdef CONFIG_NET_MULTI
1737 extern int eth_get_dev_index (void);
1738 int num
= eth_get_dev_index ();
1742 puts ("*** ERROR: No ethernet found.\n");
1745 puts ("*** ERROR: `ethaddr' not set\n");
1748 printf ("*** ERROR: `eth%daddr' not set\n",
1756 puts ("*** ERROR: `ethaddr' not set\n");
1764 return (0); /* OK */
1766 /**********************************************************************/
1769 NetCksumOk(uchar
* ptr
, int len
)
1771 return !((NetCksum(ptr
, len
) + 1) & 0xfffe);
1776 NetCksum(uchar
* ptr
, int len
)
1779 ushort
*p
= (ushort
*)ptr
;
1784 xsum
= (xsum
& 0xffff) + (xsum
>> 16);
1785 xsum
= (xsum
& 0xffff) + (xsum
>> 16);
1786 return (xsum
& 0xffff);
1794 myvlanid
= ntohs(NetOurVLAN
);
1795 if (myvlanid
== (ushort
)-1)
1796 myvlanid
= VLAN_NONE
;
1798 return ((myvlanid
& VLAN_IDMASK
) == VLAN_NONE
) ? ETHER_HDR_SIZE
: VLAN_ETHER_HDR_SIZE
;
1802 NetSetEther(volatile uchar
* xet
, uchar
* addr
, uint prot
)
1804 Ethernet_t
*et
= (Ethernet_t
*)xet
;
1807 myvlanid
= ntohs(NetOurVLAN
);
1808 if (myvlanid
== (ushort
)-1)
1809 myvlanid
= VLAN_NONE
;
1811 memcpy (et
->et_dest
, addr
, 6);
1812 memcpy (et
->et_src
, NetOurEther
, 6);
1813 if ((myvlanid
& VLAN_IDMASK
) == VLAN_NONE
) {
1814 et
->et_protlen
= htons(prot
);
1815 return ETHER_HDR_SIZE
;
1817 VLAN_Ethernet_t
*vet
= (VLAN_Ethernet_t
*)xet
;
1819 vet
->vet_vlan_type
= htons(PROT_VLAN
);
1820 vet
->vet_tag
= htons((0 << 5) | (myvlanid
& VLAN_IDMASK
));
1821 vet
->vet_type
= htons(prot
);
1822 return VLAN_ETHER_HDR_SIZE
;
1827 NetSetIP(volatile uchar
* xip
, IPaddr_t dest
, int dport
, int sport
, int len
)
1829 IP_t
*ip
= (IP_t
*)xip
;
1832 * If the data is an odd number of bytes, zero the
1833 * byte after the last byte so that the checksum
1837 xip
[IP_HDR_SIZE
+ len
] = 0;
1840 * Construct an IP and UDP header.
1841 * (need to set no fragment bit - XXX)
1843 ip
->ip_hl_v
= 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
1845 ip
->ip_len
= htons(IP_HDR_SIZE
+ len
);
1846 ip
->ip_id
= htons(NetIPID
++);
1847 ip
->ip_off
= htons(IP_FLAGS_DFRAG
); /* Don't fragment */
1849 ip
->ip_p
= 17; /* UDP */
1851 NetCopyIP((void*)&ip
->ip_src
, &NetOurIP
); /* already in network byte order */
1852 NetCopyIP((void*)&ip
->ip_dst
, &dest
); /* - "" - */
1853 ip
->udp_src
= htons(sport
);
1854 ip
->udp_dst
= htons(dport
);
1855 ip
->udp_len
= htons(8 + len
);
1857 ip
->ip_sum
= ~NetCksum((uchar
*)ip
, IP_HDR_SIZE_NO_UDP
/ 2);
1860 void copy_filename (char *dst
, char *src
, int size
)
1862 if (*src
&& (*src
== '"')) {
1867 while ((--size
> 0) && *src
&& (*src
!= '"')) {
1873 #if defined(CONFIG_CMD_NFS) || defined(CONFIG_CMD_SNTP) || defined(CONFIG_CMD_DNS)
1875 * make port a little random, but use something trivial to compute
1877 unsigned int random_port(void)
1879 return 1024 + (get_timer(0) % 0x8000);;
1883 void ip_to_string (IPaddr_t x
, char *s
)
1886 sprintf (s
, "%d.%d.%d.%d",
1887 (int) ((x
>> 24) & 0xff),
1888 (int) ((x
>> 16) & 0xff),
1889 (int) ((x
>> 8) & 0xff), (int) ((x
>> 0) & 0xff)
1893 IPaddr_t
string_to_ip(char *s
)
1902 for (addr
=0, i
=0; i
<4; ++i
) {
1903 ulong val
= s
? simple_strtoul(s
, &e
, 10) : 0;
1905 addr
|= (val
& 0xFF);
1911 return (htonl(addr
));
1914 void VLAN_to_string(ushort x
, char *s
)
1918 if (x
== (ushort
)-1)
1924 sprintf(s
, "%d", x
& VLAN_IDMASK
);
1927 ushort
string_to_VLAN(char *s
)
1932 return htons(VLAN_NONE
);
1934 if (*s
< '0' || *s
> '9')
1937 id
= (ushort
)simple_strtoul(s
, NULL
, 10);
1942 IPaddr_t
getenv_IPaddr (char *var
)
1944 return (string_to_ip(getenv(var
)));
1947 ushort
getenv_VLAN(char *var
)
1949 return (string_to_VLAN(getenv(var
)));