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wdenk2d966952002-10-31 22:12:35 +00001/*
2 * Copied from Linux Monitor (LiMon) - Networking.
3 *
4 * Copyright 1994 - 2000 Neil Russell.
5 * (See License)
6 * Copyright 2000 Roland Borde
7 * Copyright 2000 Paolo Scaffardi
8 * Copyright 2000-2002 Wolfgang Denk, wd@denx.de
9 */
10
11/*
12 * General Desription:
13 *
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:
17 *
18 * BOOTP:
19 *
20 * Prerequisites: - own ethernet address
21 * We want: - own IP address
22 * - TFTP server IP address
23 * - name of bootfile
24 * Next step: ARP
25 *
26 * RARP:
27 *
28 * Prerequisites: - own ethernet address
29 * We want: - own IP address
30 * - TFTP server IP address
31 * Next step: ARP
32 *
33 * ARP:
34 *
35 * Prerequisites: - own ethernet address
36 * - own IP address
37 * - TFTP server IP address
38 * We want: - TFTP server ethernet address
39 * Next step: TFTP
40 *
41 * DHCP:
42 *
Wolfgang Denkb2f50802005-08-12 23:43:12 +020043 * Prerequisites: - own ethernet address
44 * We want: - IP, Netmask, ServerIP, Gateway IP
45 * - bootfilename, lease time
46 * Next step: - TFTP
wdenk2d966952002-10-31 22:12:35 +000047 *
48 * TFTP:
49 *
50 * Prerequisites: - own ethernet address
51 * - own IP 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
57 * Next step: none
wdenkcbd8a352004-02-24 02:00:03 +000058 *
59 * NFS:
60 *
61 * Prerequisites: - own ethernet address
62 * - own IP 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
66 * Next step: none
wdenkea287de2005-04-01 00:25:43 +000067 *
68 * SNTP:
69 *
Wolfgang Denkb2f50802005-08-12 23:43:12 +020070 * Prerequisites: - own ethernet address
wdenkea287de2005-04-01 00:25:43 +000071 * - own IP address
72 * We want: - network time
73 * Next step: none
wdenk2d966952002-10-31 22:12:35 +000074 */
75
76
77#include <common.h>
78#include <watchdog.h>
79#include <command.h>
80#include <net.h>
81#include "bootp.h"
82#include "tftp.h"
83#include "rarp.h"
wdenkcbd8a352004-02-24 02:00:03 +000084#include "nfs.h"
wdenkfc3e2162003-10-08 22:33:00 +000085#ifdef CONFIG_STATUS_LED
86#include <status_led.h>
87#include <miiphy.h>
88#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -050089#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +000090#include "sntp.h"
91#endif
Peter Tyser561858e2008-11-03 09:30:59 -060092#if defined(CONFIG_CDP_VERSION)
93#include <timestamp.h>
94#endif
wdenk2d966952002-10-31 22:12:35 +000095
Jon Loeliger643d1ab2007-07-09 17:45:14 -050096#if defined(CONFIG_CMD_NET)
wdenk2d966952002-10-31 22:12:35 +000097
Wolfgang Denkd87080b2006-03-31 18:32:53 +020098DECLARE_GLOBAL_DATA_PTR;
99
Guennadi Liakhovetski40cb90e2008-04-03 17:04:19 +0200100#ifndef CONFIG_ARP_TIMEOUT
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200101# define ARP_TIMEOUT 5000UL /* Milliseconds before trying ARP again */
wdenk73a8b272003-06-05 19:27:42 +0000102#else
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200103# define ARP_TIMEOUT CONFIG_ARP_TIMEOUT
Guennadi Liakhovetski40cb90e2008-04-03 17:04:19 +0200104#endif
105
106
107#ifndef CONFIG_NET_RETRY_COUNT
108# define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */
109#else
110# define ARP_TIMEOUT_COUNT CONFIG_NET_RETRY_COUNT
wdenk73a8b272003-06-05 19:27:42 +0000111#endif
112
wdenk2d966952002-10-31 22:12:35 +0000113#if 0
114#define ET_DEBUG
115#endif
116
117/** BOOTP EXTENTIONS **/
118
119IPaddr_t NetOurSubnetMask=0; /* Our subnet mask (0=unknown) */
120IPaddr_t NetOurGatewayIP=0; /* Our gateways IP address */
121IPaddr_t NetOurDNSIP=0; /* Our DNS IP address */
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500122#if defined(CONFIG_BOOTP_DNS2)
stroesefe389a82003-08-28 14:17:32 +0000123IPaddr_t NetOurDNS2IP=0; /* Our 2nd DNS IP address */
124#endif
wdenk2d966952002-10-31 22:12:35 +0000125char NetOurNISDomain[32]={0,}; /* Our NIS domain */
126char NetOurHostName[32]={0,}; /* Our hostname */
127char NetOurRootPath[64]={0,}; /* Our bootpath */
128ushort NetBootFileSize=0; /* Our bootfile size in blocks */
129
David Updegraff53a5c422007-06-11 10:41:07 -0500130#ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */
131IPaddr_t Mcast_addr;
132#endif
133
wdenk2d966952002-10-31 22:12:35 +0000134/** END OF BOOTP EXTENTIONS **/
135
136ulong NetBootFileXferSize; /* The actual transferred size of the bootfile (in bytes) */
137uchar NetOurEther[6]; /* Our ethernet address */
138uchar NetServerEther[6] = /* Boot server enet address */
wdenk73a8b272003-06-05 19:27:42 +0000139 { 0, 0, 0, 0, 0, 0 };
wdenk2d966952002-10-31 22:12:35 +0000140IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
Guennadi Liakhovetski40cb90e2008-04-03 17:04:19 +0200141IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
wdenk2d966952002-10-31 22:12:35 +0000142volatile uchar *NetRxPkt; /* Current receive packet */
143int NetRxPktLen; /* Current rx packet length */
144unsigned NetIPID; /* IP packet ID */
145uchar NetBcastAddr[6] = /* Ethernet bcast address */
146 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
wdenk73a8b272003-06-05 19:27:42 +0000147uchar NetEtherNullAddr[6] =
148 { 0, 0, 0, 0, 0, 0 };
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100149#ifdef CONFIG_API
150void (*push_packet)(volatile void *, int len) = 0;
151#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500152#if defined(CONFIG_CMD_CDP)
wdenk6e592382004-04-18 17:39:38 +0000153uchar NetCDPAddr[6] = /* Ethernet bcast address */
wdenka3d991b2004-04-15 21:48:45 +0000154 { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
155#endif
wdenk2d966952002-10-31 22:12:35 +0000156int NetState; /* Network loop state */
157#ifdef CONFIG_NET_MULTI
158int NetRestartWrap = 0; /* Tried all network devices */
159static int NetRestarted = 0; /* Network loop restarted */
160static int NetDevExists = 0; /* At least one device configured */
161#endif
162
wdenk6e592382004-04-18 17:39:38 +0000163/* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
164ushort NetOurVLAN = 0xFFFF; /* default is without VLAN */
165ushort NetOurNativeVLAN = 0xFFFF; /* ditto */
wdenka3d991b2004-04-15 21:48:45 +0000166
wdenk2d966952002-10-31 22:12:35 +0000167char BootFile[128]; /* Boot File name */
168
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500169#if defined(CONFIG_CMD_PING)
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200170IPaddr_t NetPingIP; /* the ip address to ping */
wdenk73a8b272003-06-05 19:27:42 +0000171
172static void PingStart(void);
173#endif
174
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500175#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000176static void CDPStart(void);
177#endif
178
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500179#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +0000180IPaddr_t NetNtpServerIP; /* NTP server IP address */
181int NetTimeOffset=0; /* offset time from UTC */
182#endif
183
wdenk68ceb292004-08-02 21:11:11 +0000184#ifdef CONFIG_NETCONSOLE
185void NcStart(void);
186int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len);
187#endif
188
wdenk2d966952002-10-31 22:12:35 +0000189volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
190
191volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */
192
193static rxhand_f *packetHandler; /* Current RX packet handler */
194static thand_f *timeHandler; /* Current timeout handler */
wdenke0ac62d2003-08-17 18:55:18 +0000195static ulong timeStart; /* Time base value */
196static ulong timeDelta; /* Current timeout value */
wdenk2d966952002-10-31 22:12:35 +0000197volatile uchar *NetTxPacket = 0; /* THE transmit packet */
198
199static int net_check_prereq (proto_t protocol);
200
201/**********************************************************************/
wdenk73a8b272003-06-05 19:27:42 +0000202
203IPaddr_t NetArpWaitPacketIP;
204IPaddr_t NetArpWaitReplyIP;
205uchar *NetArpWaitPacketMAC; /* MAC address of waiting packet's destination */
Wolfgang Denkb2f50802005-08-12 23:43:12 +0200206uchar *NetArpWaitTxPacket; /* THE transmit packet */
wdenk73a8b272003-06-05 19:27:42 +0000207int NetArpWaitTxPacketSize;
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200208uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
wdenk73a8b272003-06-05 19:27:42 +0000209ulong NetArpWaitTimerStart;
210int NetArpWaitTry;
211
wdenk6e592382004-04-18 17:39:38 +0000212void ArpRequest (void)
wdenk73a8b272003-06-05 19:27:42 +0000213{
214 int i;
215 volatile uchar *pkt;
wdenk6e592382004-04-18 17:39:38 +0000216 ARP_t *arp;
wdenk73a8b272003-06-05 19:27:42 +0000217
218#ifdef ET_DEBUG
wdenk6e592382004-04-18 17:39:38 +0000219 printf ("ARP broadcast %d\n", NetArpWaitTry);
wdenk73a8b272003-06-05 19:27:42 +0000220#endif
221 pkt = NetTxPacket;
222
wdenk6e592382004-04-18 17:39:38 +0000223 pkt += NetSetEther (pkt, NetBcastAddr, PROT_ARP);
wdenk73a8b272003-06-05 19:27:42 +0000224
wdenk6e592382004-04-18 17:39:38 +0000225 arp = (ARP_t *) pkt;
wdenk73a8b272003-06-05 19:27:42 +0000226
wdenk6e592382004-04-18 17:39:38 +0000227 arp->ar_hrd = htons (ARP_ETHER);
228 arp->ar_pro = htons (PROT_IP);
wdenk73a8b272003-06-05 19:27:42 +0000229 arp->ar_hln = 6;
230 arp->ar_pln = 4;
wdenk6e592382004-04-18 17:39:38 +0000231 arp->ar_op = htons (ARPOP_REQUEST);
wdenk73a8b272003-06-05 19:27:42 +0000232
Wolfgang Denkb2f50802005-08-12 23:43:12 +0200233 memcpy (&arp->ar_data[0], NetOurEther, 6); /* source ET addr */
234 NetWriteIP ((uchar *) & arp->ar_data[6], NetOurIP); /* source IP addr */
wdenk6e592382004-04-18 17:39:38 +0000235 for (i = 10; i < 16; ++i) {
236 arp->ar_data[i] = 0; /* dest ET addr = 0 */
wdenk73a8b272003-06-05 19:27:42 +0000237 }
238
wdenk6e592382004-04-18 17:39:38 +0000239 if ((NetArpWaitPacketIP & NetOurSubnetMask) !=
240 (NetOurIP & NetOurSubnetMask)) {
241 if (NetOurGatewayIP == 0) {
242 puts ("## Warning: gatewayip needed but not set\n");
Wolfgang Denkd509b812006-03-12 01:13:30 +0100243 NetArpWaitReplyIP = NetArpWaitPacketIP;
244 } else {
245 NetArpWaitReplyIP = NetOurGatewayIP;
wdenk6e592382004-04-18 17:39:38 +0000246 }
wdenk6e592382004-04-18 17:39:38 +0000247 } else {
248 NetArpWaitReplyIP = NetArpWaitPacketIP;
249 }
wdenk73a8b272003-06-05 19:27:42 +0000250
wdenk6e592382004-04-18 17:39:38 +0000251 NetWriteIP ((uchar *) & arp->ar_data[16], NetArpWaitReplyIP);
252 (void) eth_send (NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
wdenk73a8b272003-06-05 19:27:42 +0000253}
254
255void ArpTimeoutCheck(void)
256{
257 ulong t;
258
259 if (!NetArpWaitPacketIP)
260 return;
261
262 t = get_timer(0);
263
264 /* check for arp timeout */
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200265 if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT) {
wdenk73a8b272003-06-05 19:27:42 +0000266 NetArpWaitTry++;
267
268 if (NetArpWaitTry >= ARP_TIMEOUT_COUNT) {
269 puts ("\nARP Retry count exceeded; starting again\n");
270 NetArpWaitTry = 0;
271 NetStartAgain();
272 } else {
273 NetArpWaitTimerStart = t;
274 ArpRequest();
275 }
276 }
277}
278
Heiko Schocherda954272009-04-28 08:36:11 +0200279static void
Heiko Schocher2f70c492009-02-10 09:38:52 +0100280NetInitLoop(proto_t protocol)
281{
Heiko Schocherda954272009-04-28 08:36:11 +0200282 static int env_changed_id = 0;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100283 bd_t *bd = gd->bd;
284 int env_id = get_env_id ();
285
286 /* update only when the environment has changed */
Michael Zaidman3c172c42009-04-04 01:43:00 +0300287 if (env_changed_id != env_id) {
Heiko Schocher2f70c492009-02-10 09:38:52 +0100288 NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
289 NetOurGatewayIP = getenv_IPaddr ("gatewayip");
290 NetOurSubnetMask= getenv_IPaddr ("netmask");
Heiko Schocher2f70c492009-02-10 09:38:52 +0100291 NetServerIP = getenv_IPaddr ("serverip");
Heiko Schocher2f70c492009-02-10 09:38:52 +0100292 NetOurNativeVLAN = getenv_VLAN("nvlan");
Michael Zaidman3c172c42009-04-04 01:43:00 +0300293 NetOurVLAN = getenv_VLAN("vlan");
294 env_changed_id = env_id;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100295 }
Michael Zaidman3c172c42009-04-04 01:43:00 +0300296
Heiko Schocherda954272009-04-28 08:36:11 +0200297 return;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100298}
299
wdenk73a8b272003-06-05 19:27:42 +0000300/**********************************************************************/
wdenk2d966952002-10-31 22:12:35 +0000301/*
302 * Main network processing loop.
303 */
304
305int
306NetLoop(proto_t protocol)
307{
wdenk2d966952002-10-31 22:12:35 +0000308 bd_t *bd = gd->bd;
309
310#ifdef CONFIG_NET_MULTI
311 NetRestarted = 0;
312 NetDevExists = 0;
313#endif
314
wdenk73a8b272003-06-05 19:27:42 +0000315 /* XXX problem with bss workaround */
316 NetArpWaitPacketMAC = NULL;
317 NetArpWaitTxPacket = NULL;
318 NetArpWaitPacketIP = 0;
319 NetArpWaitReplyIP = 0;
320 NetArpWaitTxPacket = NULL;
321 NetTxPacket = NULL;
322
wdenk2d966952002-10-31 22:12:35 +0000323 if (!NetTxPacket) {
324 int i;
wdenk2d966952002-10-31 22:12:35 +0000325 /*
326 * Setup packet buffers, aligned correctly.
327 */
328 NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
329 NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
330 for (i = 0; i < PKTBUFSRX; i++) {
331 NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN;
332 }
wdenk73a8b272003-06-05 19:27:42 +0000333 }
334
335 if (!NetArpWaitTxPacket) {
336 NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1);
337 NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN;
338 NetArpWaitTxPacketSize = 0;
wdenk2d966952002-10-31 22:12:35 +0000339 }
340
341 eth_halt();
wdenk6e592382004-04-18 17:39:38 +0000342#ifdef CONFIG_NET_MULTI
wdenka3d991b2004-04-15 21:48:45 +0000343 eth_set_current();
wdenk6e592382004-04-18 17:39:38 +0000344#endif
wdenkb1bf6f22005-04-03 14:52:59 +0000345 if (eth_init(bd) < 0) {
346 eth_halt();
wdenk6e592382004-04-18 17:39:38 +0000347 return(-1);
wdenkb1bf6f22005-04-03 14:52:59 +0000348 }
wdenk2d966952002-10-31 22:12:35 +0000349
350restart:
351#ifdef CONFIG_NET_MULTI
352 memcpy (NetOurEther, eth_get_dev()->enetaddr, 6);
353#else
Mike Frysinger95823ca2009-02-11 18:23:48 -0500354 eth_getenv_enetaddr("ethaddr", NetOurEther);
wdenk2d966952002-10-31 22:12:35 +0000355#endif
356
357 NetState = NETLOOP_CONTINUE;
358
359 /*
360 * Start the ball rolling with the given start function. From
361 * here on, this code is a state machine driven by received
362 * packets and timer events.
363 */
Heiko Schocher2f70c492009-02-10 09:38:52 +0100364 NetInitLoop(protocol);
wdenk2d966952002-10-31 22:12:35 +0000365
366 switch (net_check_prereq (protocol)) {
367 case 1:
368 /* network not configured */
wdenkb1bf6f22005-04-03 14:52:59 +0000369 eth_halt();
wdenk1d0350e2002-11-11 21:14:20 +0000370 return (-1);
wdenk2d966952002-10-31 22:12:35 +0000371
372#ifdef CONFIG_NET_MULTI
373 case 2:
374 /* network device not configured */
375 break;
376#endif /* CONFIG_NET_MULTI */
377
378 case 0:
379#ifdef CONFIG_NET_MULTI
380 NetDevExists = 1;
381#endif
382 switch (protocol) {
383 case TFTP:
384 /* always use ARP to get server ethernet address */
wdenk73a8b272003-06-05 19:27:42 +0000385 TftpStart();
wdenk2d966952002-10-31 22:12:35 +0000386 break;
387
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500388#if defined(CONFIG_CMD_DHCP)
wdenk2d966952002-10-31 22:12:35 +0000389 case DHCP:
wdenkd407bf52004-10-11 22:51:13 +0000390 BootpTry = 0;
wdenk2d966952002-10-31 22:12:35 +0000391 DhcpRequest(); /* Basically same as BOOTP */
392 break;
Jon Loeliger610f2e92007-07-10 11:05:02 -0500393#endif
wdenk2d966952002-10-31 22:12:35 +0000394
395 case BOOTP:
396 BootpTry = 0;
397 BootpRequest ();
398 break;
399
400 case RARP:
401 RarpTry = 0;
402 RarpRequest ();
403 break;
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500404#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +0000405 case PING:
406 PingStart();
407 break;
408#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500409#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +0000410 case NFS:
411 NfsStart();
412 break;
413#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500414#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000415 case CDP:
416 CDPStart();
417 break;
418#endif
wdenk68ceb292004-08-02 21:11:11 +0000419#ifdef CONFIG_NETCONSOLE
420 case NETCONS:
421 NcStart();
422 break;
423#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500424#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +0000425 case SNTP:
426 SntpStart();
427 break;
428#endif
wdenk2d966952002-10-31 22:12:35 +0000429 default:
430 break;
431 }
432
433 NetBootFileXferSize = 0;
434 break;
435 }
436
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500437#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200438#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000439 /*
wdenk42d1f032003-10-15 23:53:47 +0000440 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000441 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200442 if(miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) {
wdenkfc3e2162003-10-08 22:33:00 +0000443 status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
444 } else {
445 status_led_set (STATUS_LED_RED, STATUS_LED_ON);
446 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200447#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000448#endif /* CONFIG_MII, ... */
wdenk2d966952002-10-31 22:12:35 +0000449
450 /*
451 * Main packet reception loop. Loop receiving packets until
wdenk59acc292005-04-03 14:18:51 +0000452 * someone sets `NetState' to a state that terminates.
wdenk2d966952002-10-31 22:12:35 +0000453 */
454 for (;;) {
455 WATCHDOG_RESET();
456#ifdef CONFIG_SHOW_ACTIVITY
457 {
458 extern void show_activity(int arg);
459 show_activity(1);
460 }
461#endif
462 /*
463 * Check the ethernet for a new packet. The ethernet
464 * receive routine will process it.
465 */
Guennadi Liakhovetski40cb90e2008-04-03 17:04:19 +0200466 eth_rx();
wdenk2d966952002-10-31 22:12:35 +0000467
468 /*
469 * Abort if ctrl-c was pressed.
470 */
471 if (ctrlc()) {
wdenk8bde7f72003-06-27 21:31:46 +0000472 eth_halt();
wdenk4b9206e2004-03-23 22:14:11 +0000473 puts ("\nAbort\n");
wdenk1d0350e2002-11-11 21:14:20 +0000474 return (-1);
wdenk2d966952002-10-31 22:12:35 +0000475 }
476
wdenk73a8b272003-06-05 19:27:42 +0000477 ArpTimeoutCheck();
wdenk2d966952002-10-31 22:12:35 +0000478
479 /*
480 * Check for a timeout, and run the timeout handler
481 * if we have one.
482 */
wdenke0ac62d2003-08-17 18:55:18 +0000483 if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) {
wdenk2d966952002-10-31 22:12:35 +0000484 thand_f *x;
485
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500486#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200487# if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
wdenk63153492005-04-03 20:55:38 +0000488 defined(CONFIG_STATUS_LED) && \
wdenk59acc292005-04-03 14:18:51 +0000489 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000490 /*
wdenk42d1f032003-10-15 23:53:47 +0000491 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000492 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200493 if(miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) {
wdenkfc3e2162003-10-08 22:33:00 +0000494 status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
495 } else {
496 status_led_set (STATUS_LED_RED, STATUS_LED_ON);
497 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200498# endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000499#endif /* CONFIG_MII, ... */
wdenk2d966952002-10-31 22:12:35 +0000500 x = timeHandler;
501 timeHandler = (thand_f *)0;
502 (*x)();
503 }
504
505
506 switch (NetState) {
507
508 case NETLOOP_RESTART:
509#ifdef CONFIG_NET_MULTI
510 NetRestarted = 1;
511#endif
512 goto restart;
513
514 case NETLOOP_SUCCESS:
515 if (NetBootFileXferSize > 0) {
Wolfgang Denkf34024d2007-09-12 00:48:57 +0200516 char buf[20];
wdenk2d966952002-10-31 22:12:35 +0000517 printf("Bytes transferred = %ld (%lx hex)\n",
518 NetBootFileXferSize,
519 NetBootFileXferSize);
Wolfgang Denkf34024d2007-09-12 00:48:57 +0200520 sprintf(buf, "%lX", NetBootFileXferSize);
wdenk2d966952002-10-31 22:12:35 +0000521 setenv("filesize", buf);
wdenka3d991b2004-04-15 21:48:45 +0000522
523 sprintf(buf, "%lX", (unsigned long)load_addr);
524 setenv("fileaddr", buf);
wdenk2d966952002-10-31 22:12:35 +0000525 }
526 eth_halt();
527 return NetBootFileXferSize;
528
529 case NETLOOP_FAIL:
wdenk1d0350e2002-11-11 21:14:20 +0000530 return (-1);
wdenk2d966952002-10-31 22:12:35 +0000531 }
532 }
533}
534
535/**********************************************************************/
536
537static void
538startAgainTimeout(void)
539{
540 NetState = NETLOOP_RESTART;
541}
542
543static void
544startAgainHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
545{
546 /* Totally ignore the packet */
547}
548
wdenk6e592382004-04-18 17:39:38 +0000549void NetStartAgain (void)
wdenk2d966952002-10-31 22:12:35 +0000550{
wdenk6e592382004-04-18 17:39:38 +0000551 char *nretry;
552 int noretry = 0, once = 0;
wdenka3d991b2004-04-15 21:48:45 +0000553
wdenk6e592382004-04-18 17:39:38 +0000554 if ((nretry = getenv ("netretry")) != NULL) {
555 noretry = (strcmp (nretry, "no") == 0);
556 once = (strcmp (nretry, "once") == 0);
557 }
558 if (noretry) {
559 eth_halt ();
wdenka3d991b2004-04-15 21:48:45 +0000560 NetState = NETLOOP_FAIL;
561 return;
562 }
wdenk2d966952002-10-31 22:12:35 +0000563#ifndef CONFIG_NET_MULTI
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200564 NetSetTimeout (10000UL, startAgainTimeout);
wdenk6e592382004-04-18 17:39:38 +0000565 NetSetHandler (startAgainHandler);
566#else /* !CONFIG_NET_MULTI*/
567 eth_halt ();
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100568#if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
wdenk6e592382004-04-18 17:39:38 +0000569 eth_try_another (!NetRestarted);
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100570#endif
wdenk6e592382004-04-18 17:39:38 +0000571 eth_init (gd->bd);
572 if (NetRestartWrap) {
wdenk2d966952002-10-31 22:12:35 +0000573 NetRestartWrap = 0;
wdenk6e592382004-04-18 17:39:38 +0000574 if (NetDevExists && !once) {
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200575 NetSetTimeout (10000UL, startAgainTimeout);
wdenk6e592382004-04-18 17:39:38 +0000576 NetSetHandler (startAgainHandler);
577 } else {
wdenk2d966952002-10-31 22:12:35 +0000578 NetState = NETLOOP_FAIL;
579 }
wdenk6e592382004-04-18 17:39:38 +0000580 } else {
wdenk2d966952002-10-31 22:12:35 +0000581 NetState = NETLOOP_RESTART;
582 }
wdenk6e592382004-04-18 17:39:38 +0000583#endif /* CONFIG_NET_MULTI */
wdenk2d966952002-10-31 22:12:35 +0000584}
585
586/**********************************************************************/
587/*
588 * Miscelaneous bits.
589 */
590
591void
592NetSetHandler(rxhand_f * f)
593{
594 packetHandler = f;
595}
596
597
598void
wdenk3e01d752004-10-09 21:56:21 +0000599NetSetTimeout(ulong iv, thand_f * f)
wdenk2d966952002-10-31 22:12:35 +0000600{
601 if (iv == 0) {
602 timeHandler = (thand_f *)0;
603 } else {
604 timeHandler = f;
wdenke0ac62d2003-08-17 18:55:18 +0000605 timeStart = get_timer(0);
606 timeDelta = iv;
wdenk2d966952002-10-31 22:12:35 +0000607 }
608}
609
610
611void
612NetSendPacket(volatile uchar * pkt, int len)
613{
614 (void) eth_send(pkt, len);
615}
616
wdenk73a8b272003-06-05 19:27:42 +0000617int
618NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
619{
wdenka3d991b2004-04-15 21:48:45 +0000620 uchar *pkt;
621
wdenk73a8b272003-06-05 19:27:42 +0000622 /* convert to new style broadcast */
623 if (dest == 0)
624 dest = 0xFFFFFFFF;
wdenk2d966952002-10-31 22:12:35 +0000625
wdenk73a8b272003-06-05 19:27:42 +0000626 /* if broadcast, make the ether address a broadcast and don't do ARP */
627 if (dest == 0xFFFFFFFF)
628 ether = NetBcastAddr;
629
630 /* if MAC address was not discovered yet, save the packet and do an ARP request */
631 if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
632
633#ifdef ET_DEBUG
634 printf("sending ARP for %08lx\n", dest);
635#endif
wdenk73a8b272003-06-05 19:27:42 +0000636 NetArpWaitPacketIP = dest;
637 NetArpWaitPacketMAC = ether;
wdenka3d991b2004-04-15 21:48:45 +0000638
639 pkt = NetArpWaitTxPacket;
640 pkt += NetSetEther (pkt, NetArpWaitPacketMAC, PROT_IP);
641
642 NetSetIP (pkt, dest, dport, sport, len);
643 memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len);
wdenk73a8b272003-06-05 19:27:42 +0000644
645 /* size of the waiting packet */
wdenka3d991b2004-04-15 21:48:45 +0000646 NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len;
wdenk73a8b272003-06-05 19:27:42 +0000647
648 /* and do the ARP request */
649 NetArpWaitTry = 1;
650 NetArpWaitTimerStart = get_timer(0);
651 ArpRequest();
652 return 1; /* waiting */
653 }
654
655#ifdef ET_DEBUG
Mike Frysinger95823ca2009-02-11 18:23:48 -0500656 printf("sending UDP to %08lx/%pM\n", dest, ether);
wdenk73a8b272003-06-05 19:27:42 +0000657#endif
658
wdenka3d991b2004-04-15 21:48:45 +0000659 pkt = (uchar *)NetTxPacket;
660 pkt += NetSetEther (pkt, ether, PROT_IP);
661 NetSetIP (pkt, dest, dport, sport, len);
662 (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len);
wdenk73a8b272003-06-05 19:27:42 +0000663
wdenk6e592382004-04-18 17:39:38 +0000664 return 0; /* transmitted */
wdenk73a8b272003-06-05 19:27:42 +0000665}
666
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500667#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +0000668static ushort PingSeqNo;
669
670int PingSend(void)
671{
672 static uchar mac[6];
673 volatile IP_t *ip;
674 volatile ushort *s;
wdenka3d991b2004-04-15 21:48:45 +0000675 uchar *pkt;
wdenk73a8b272003-06-05 19:27:42 +0000676
677 /* XXX always send arp request */
678
679 memcpy(mac, NetEtherNullAddr, 6);
680
681#ifdef ET_DEBUG
682 printf("sending ARP for %08lx\n", NetPingIP);
683#endif
684
685 NetArpWaitPacketIP = NetPingIP;
686 NetArpWaitPacketMAC = mac;
687
wdenka3d991b2004-04-15 21:48:45 +0000688 pkt = NetArpWaitTxPacket;
689 pkt += NetSetEther(pkt, mac, PROT_IP);
wdenk73a8b272003-06-05 19:27:42 +0000690
wdenka3d991b2004-04-15 21:48:45 +0000691 ip = (volatile IP_t *)pkt;
wdenk73a8b272003-06-05 19:27:42 +0000692
693 /*
694 * Construct an IP and ICMP header. (need to set no fragment bit - XXX)
695 */
696 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
697 ip->ip_tos = 0;
698 ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8);
699 ip->ip_id = htons(NetIPID++);
Peter Tysere0c07b82008-12-01 16:26:20 -0600700 ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
wdenk73a8b272003-06-05 19:27:42 +0000701 ip->ip_ttl = 255;
702 ip->ip_p = 0x01; /* ICMP */
703 ip->ip_sum = 0;
704 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
705 NetCopyIP((void*)&ip->ip_dst, &NetPingIP); /* - "" - */
706 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
707
708 s = &ip->udp_src; /* XXX ICMP starts here */
709 s[0] = htons(0x0800); /* echo-request, code */
710 s[1] = 0; /* checksum */
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200711 s[2] = 0; /* identifier */
wdenk73a8b272003-06-05 19:27:42 +0000712 s[3] = htons(PingSeqNo++); /* sequence number */
713 s[1] = ~NetCksum((uchar *)s, 8/2);
714
715 /* size of the waiting packet */
wdenka3d991b2004-04-15 21:48:45 +0000716 NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
wdenk73a8b272003-06-05 19:27:42 +0000717
718 /* and do the ARP request */
719 NetArpWaitTry = 1;
720 NetArpWaitTimerStart = get_timer(0);
721 ArpRequest();
722 return 1; /* waiting */
723}
724
725static void
726PingTimeout (void)
727{
728 eth_halt();
729 NetState = NETLOOP_FAIL; /* we did not get the reply */
730}
731
732static void
733PingHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
734{
735 IPaddr_t tmp;
736 volatile IP_t *ip = (volatile IP_t *)pkt;
737
738 tmp = NetReadIP((void *)&ip->ip_src);
739 if (tmp != NetPingIP)
740 return;
741
742 NetState = NETLOOP_SUCCESS;
743}
744
745static void PingStart(void)
746{
wdenka3d991b2004-04-15 21:48:45 +0000747#if defined(CONFIG_NET_MULTI)
748 printf ("Using %s device\n", eth_get_name());
wdenk6e592382004-04-18 17:39:38 +0000749#endif /* CONFIG_NET_MULTI */
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200750 NetSetTimeout (10000UL, PingTimeout);
wdenk73a8b272003-06-05 19:27:42 +0000751 NetSetHandler (PingHandler);
752
753 PingSend();
754}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500755#endif
wdenk2d966952002-10-31 22:12:35 +0000756
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500757#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000758
759#define CDP_DEVICE_ID_TLV 0x0001
760#define CDP_ADDRESS_TLV 0x0002
761#define CDP_PORT_ID_TLV 0x0003
762#define CDP_CAPABILITIES_TLV 0x0004
763#define CDP_VERSION_TLV 0x0005
764#define CDP_PLATFORM_TLV 0x0006
765#define CDP_NATIVE_VLAN_TLV 0x000a
766#define CDP_APPLIANCE_VLAN_TLV 0x000e
767#define CDP_TRIGGER_TLV 0x000f
768#define CDP_POWER_CONSUMPTION_TLV 0x0010
769#define CDP_SYSNAME_TLV 0x0014
770#define CDP_SYSOBJECT_TLV 0x0015
771#define CDP_MANAGEMENT_ADDRESS_TLV 0x0016
772
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200773#define CDP_TIMEOUT 250UL /* one packet every 250ms */
wdenka3d991b2004-04-15 21:48:45 +0000774
775static int CDPSeq;
776static int CDPOK;
777
778ushort CDPNativeVLAN;
779ushort CDPApplianceVLAN;
780
781static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
782
783static ushort CDP_compute_csum(const uchar *buff, ushort len)
784{
785 ushort csum;
786 int odd;
787 ulong result = 0;
788 ushort leftover;
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200789 ushort *p;
wdenka3d991b2004-04-15 21:48:45 +0000790
791 if (len > 0) {
792 odd = 1 & (ulong)buff;
793 if (odd) {
794 result = *buff << 8;
795 len--;
796 buff++;
797 }
798 while (len > 1) {
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200799 p = (ushort *)buff;
800 result += *p++;
801 buff = (uchar *)p;
wdenka3d991b2004-04-15 21:48:45 +0000802 if (result & 0x80000000)
803 result = (result & 0xFFFF) + (result >> 16);
804 len -= 2;
805 }
806 if (len) {
807 leftover = (signed short)(*(const signed char *)buff);
Wolfgang Denk3ada8342005-11-10 20:59:46 +0100808 /* CISCO SUCKS big time! (and blows too):
809 * CDP uses the IP checksum algorithm with a twist;
810 * for the last byte it *sign* extends and sums.
811 */
wdenka3d991b2004-04-15 21:48:45 +0000812 result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff);
813 }
814 while (result >> 16)
815 result = (result & 0xFFFF) + (result >> 16);
816
817 if (odd)
818 result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
819 }
820
821 /* add up 16-bit and 17-bit words for 17+c bits */
822 result = (result & 0xffff) + (result >> 16);
823 /* add up 16-bit and 2-bit for 16+c bit */
824 result = (result & 0xffff) + (result >> 16);
825 /* add up carry.. */
826 result = (result & 0xffff) + (result >> 16);
827
828 /* negate */
829 csum = ~(ushort)result;
830
831 /* run time endian detection */
832 if (csum != htons(csum)) /* little endian */
833 csum = htons(csum);
834
835 return csum;
836}
837
838int CDPSendTrigger(void)
839{
840 volatile uchar *pkt;
841 volatile ushort *s;
842 volatile ushort *cp;
843 Ethernet_t *et;
wdenka3d991b2004-04-15 21:48:45 +0000844 int len;
845 ushort chksum;
wdenk6e592382004-04-18 17:39:38 +0000846#if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \
847 defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM)
848 char buf[32];
849#endif
wdenka3d991b2004-04-15 21:48:45 +0000850
851 pkt = NetTxPacket;
852 et = (Ethernet_t *)pkt;
853
854 /* NOTE: trigger sent not on any VLAN */
855
856 /* form ethernet header */
857 memcpy(et->et_dest, NetCDPAddr, 6);
858 memcpy(et->et_src, NetOurEther, 6);
859
860 pkt += ETHER_HDR_SIZE;
861
862 /* SNAP header */
863 memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr));
864 pkt += sizeof(CDP_SNAP_hdr);
865
866 /* CDP header */
867 *pkt++ = 0x02; /* CDP version 2 */
868 *pkt++ = 180; /* TTL */
869 s = (volatile ushort *)pkt;
870 cp = s;
871 *s++ = htons(0); /* checksum (0 for later calculation) */
872
873 /* CDP fields */
874#ifdef CONFIG_CDP_DEVICE_ID
875 *s++ = htons(CDP_DEVICE_ID_TLV);
876 *s++ = htons(CONFIG_CDP_DEVICE_ID);
Mike Frysinger95823ca2009-02-11 18:23:48 -0500877 sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%pm", NetOurEther);
wdenka3d991b2004-04-15 21:48:45 +0000878 memcpy((uchar *)s, buf, 16);
879 s += 16 / 2;
880#endif
881
882#ifdef CONFIG_CDP_PORT_ID
883 *s++ = htons(CDP_PORT_ID_TLV);
884 memset(buf, 0, sizeof(buf));
885 sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index());
886 len = strlen(buf);
887 if (len & 1) /* make it even */
888 len++;
889 *s++ = htons(len + 4);
890 memcpy((uchar *)s, buf, len);
891 s += len / 2;
892#endif
893
894#ifdef CONFIG_CDP_CAPABILITIES
895 *s++ = htons(CDP_CAPABILITIES_TLV);
896 *s++ = htons(8);
897 *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES);
898 s += 2;
899#endif
900
901#ifdef CONFIG_CDP_VERSION
902 *s++ = htons(CDP_VERSION_TLV);
903 memset(buf, 0, sizeof(buf));
904 strcpy(buf, CONFIG_CDP_VERSION);
905 len = strlen(buf);
906 if (len & 1) /* make it even */
907 len++;
908 *s++ = htons(len + 4);
909 memcpy((uchar *)s, buf, len);
910 s += len / 2;
911#endif
912
913#ifdef CONFIG_CDP_PLATFORM
914 *s++ = htons(CDP_PLATFORM_TLV);
915 memset(buf, 0, sizeof(buf));
916 strcpy(buf, CONFIG_CDP_PLATFORM);
917 len = strlen(buf);
918 if (len & 1) /* make it even */
919 len++;
920 *s++ = htons(len + 4);
921 memcpy((uchar *)s, buf, len);
922 s += len / 2;
923#endif
924
925#ifdef CONFIG_CDP_TRIGGER
926 *s++ = htons(CDP_TRIGGER_TLV);
927 *s++ = htons(8);
928 *(ulong *)s = htonl(CONFIG_CDP_TRIGGER);
929 s += 2;
930#endif
931
932#ifdef CONFIG_CDP_POWER_CONSUMPTION
933 *s++ = htons(CDP_POWER_CONSUMPTION_TLV);
934 *s++ = htons(6);
935 *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION);
936#endif
937
938 /* length of ethernet packet */
939 len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE);
940 et->et_protlen = htons(len);
941
942 len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr);
943 chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len));
944 if (chksum == 0)
945 chksum = 0xFFFF;
946 *cp = htons(chksum);
947
948 (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket);
949 return 0;
950}
951
952static void
953CDPTimeout (void)
954{
955 CDPSeq++;
956
957 if (CDPSeq < 3) {
958 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
959 CDPSendTrigger();
960 return;
961 }
962
963 /* if not OK try again */
964 if (!CDPOK)
965 NetStartAgain();
966 else
967 NetState = NETLOOP_SUCCESS;
968}
969
970static void
971CDPDummyHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
972{
973 /* nothing */
974}
975
976static void
977CDPHandler(const uchar * pkt, unsigned len)
978{
979 const uchar *t;
980 const ushort *ss;
981 ushort type, tlen;
982 uchar applid;
983 ushort vlan, nvlan;
984
985 /* minimum size? */
986 if (len < sizeof(CDP_SNAP_hdr) + 4)
987 goto pkt_short;
988
989 /* check for valid CDP SNAP header */
990 if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0)
991 return;
992
993 pkt += sizeof(CDP_SNAP_hdr);
994 len -= sizeof(CDP_SNAP_hdr);
995
996 /* Version of CDP protocol must be >= 2 and TTL != 0 */
997 if (pkt[0] < 0x02 || pkt[1] == 0)
998 return;
999
1000 /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
1001 if (pkt[0] != 0x02)
1002 printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
1003 pkt[0] & 0xff);
1004
1005 if (CDP_compute_csum(pkt, len) != 0)
1006 return;
1007
1008 pkt += 4;
1009 len -= 4;
1010
1011 vlan = htons(-1);
1012 nvlan = htons(-1);
1013 while (len > 0) {
1014 if (len < 4)
1015 goto pkt_short;
1016
1017 ss = (const ushort *)pkt;
1018 type = ntohs(ss[0]);
1019 tlen = ntohs(ss[1]);
1020 if (tlen > len) {
1021 goto pkt_short;
1022 }
1023
1024 pkt += tlen;
1025 len -= tlen;
1026
1027 ss += 2; /* point ss to the data of the TLV */
1028 tlen -= 4;
1029
1030 switch (type) {
1031 case CDP_DEVICE_ID_TLV:
1032 break;
1033 case CDP_ADDRESS_TLV:
1034 break;
1035 case CDP_PORT_ID_TLV:
1036 break;
1037 case CDP_CAPABILITIES_TLV:
1038 break;
1039 case CDP_VERSION_TLV:
1040 break;
1041 case CDP_PLATFORM_TLV:
1042 break;
1043 case CDP_NATIVE_VLAN_TLV:
1044 nvlan = *ss;
1045 break;
1046 case CDP_APPLIANCE_VLAN_TLV:
1047 t = (const uchar *)ss;
1048 while (tlen > 0) {
1049 if (tlen < 3)
1050 goto pkt_short;
1051
1052 applid = t[0];
1053 ss = (const ushort *)(t + 1);
1054
1055#ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
1056 if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE)
1057 vlan = *ss;
1058#else
1059 vlan = ntohs(*ss); /* XXX will this work; dunno */
1060#endif
1061 t += 3; tlen -= 3;
1062 }
1063 break;
1064 case CDP_TRIGGER_TLV:
1065 break;
1066 case CDP_POWER_CONSUMPTION_TLV:
1067 break;
1068 case CDP_SYSNAME_TLV:
1069 break;
1070 case CDP_SYSOBJECT_TLV:
1071 break;
1072 case CDP_MANAGEMENT_ADDRESS_TLV:
1073 break;
1074 }
1075 }
1076
1077 CDPApplianceVLAN = vlan;
1078 CDPNativeVLAN = nvlan;
1079
1080 CDPOK = 1;
1081 return;
1082
1083 pkt_short:
1084 printf("** CDP packet is too short\n");
1085 return;
1086}
1087
1088static void CDPStart(void)
1089{
1090#if defined(CONFIG_NET_MULTI)
1091 printf ("Using %s device\n", eth_get_name());
1092#endif
1093 CDPSeq = 0;
1094 CDPOK = 0;
1095
1096 CDPNativeVLAN = htons(-1);
1097 CDPApplianceVLAN = htons(-1);
1098
1099 NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
1100 NetSetHandler (CDPDummyHandler);
1101
1102 CDPSendTrigger();
1103}
Jon Loeliger610f2e92007-07-10 11:05:02 -05001104#endif
wdenka3d991b2004-04-15 21:48:45 +00001105
1106
wdenk2d966952002-10-31 22:12:35 +00001107void
wdenka3d991b2004-04-15 21:48:45 +00001108NetReceive(volatile uchar * inpkt, int len)
wdenk2d966952002-10-31 22:12:35 +00001109{
1110 Ethernet_t *et;
1111 IP_t *ip;
1112 ARP_t *arp;
1113 IPaddr_t tmp;
1114 int x;
wdenka3d991b2004-04-15 21:48:45 +00001115 uchar *pkt;
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001116#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001117 int iscdp;
1118#endif
1119 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
wdenk2d966952002-10-31 22:12:35 +00001120
wdenka3d991b2004-04-15 21:48:45 +00001121#ifdef ET_DEBUG
1122 printf("packet received\n");
1123#endif
1124
1125 NetRxPkt = inpkt;
wdenk2d966952002-10-31 22:12:35 +00001126 NetRxPktLen = len;
wdenka3d991b2004-04-15 21:48:45 +00001127 et = (Ethernet_t *)inpkt;
1128
1129 /* too small packet? */
1130 if (len < ETHER_HDR_SIZE)
1131 return;
1132
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001133#ifdef CONFIG_API
1134 if (push_packet) {
1135 (*push_packet)(inpkt, len);
1136 return;
1137 }
1138#endif
1139
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001140#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001141 /* keep track if packet is CDP */
1142 iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0;
1143#endif
1144
1145 myvlanid = ntohs(NetOurVLAN);
1146 if (myvlanid == (ushort)-1)
1147 myvlanid = VLAN_NONE;
1148 mynvlanid = ntohs(NetOurNativeVLAN);
1149 if (mynvlanid == (ushort)-1)
1150 mynvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +00001151
1152 x = ntohs(et->et_protlen);
1153
wdenka3d991b2004-04-15 21:48:45 +00001154#ifdef ET_DEBUG
1155 printf("packet received\n");
1156#endif
1157
wdenk2d966952002-10-31 22:12:35 +00001158 if (x < 1514) {
1159 /*
1160 * Got a 802 packet. Check the other protocol field.
1161 */
1162 x = ntohs(et->et_prot);
wdenka3d991b2004-04-15 21:48:45 +00001163
1164 ip = (IP_t *)(inpkt + E802_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001165 len -= E802_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001166
1167 } else if (x != PROT_VLAN) { /* normal packet */
1168 ip = (IP_t *)(inpkt + ETHER_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001169 len -= ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001170
1171 } else { /* VLAN packet */
1172 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et;
1173
1174#ifdef ET_DEBUG
1175 printf("VLAN packet received\n");
1176#endif
1177 /* too small packet? */
1178 if (len < VLAN_ETHER_HDR_SIZE)
1179 return;
1180
1181 /* if no VLAN active */
1182 if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001183#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001184 && iscdp == 0
1185#endif
1186 )
1187 return;
1188
1189 cti = ntohs(vet->vet_tag);
1190 vlanid = cti & VLAN_IDMASK;
1191 x = ntohs(vet->vet_type);
1192
1193 ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE);
1194 len -= VLAN_ETHER_HDR_SIZE;
wdenk2d966952002-10-31 22:12:35 +00001195 }
1196
1197#ifdef ET_DEBUG
1198 printf("Receive from protocol 0x%x\n", x);
1199#endif
1200
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001201#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001202 if (iscdp) {
1203 CDPHandler((uchar *)ip, len);
1204 return;
1205 }
1206#endif
1207
1208 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1209 if (vlanid == VLAN_NONE)
1210 vlanid = (mynvlanid & VLAN_IDMASK);
1211 /* not matched? */
1212 if (vlanid != (myvlanid & VLAN_IDMASK))
1213 return;
1214 }
1215
wdenk2d966952002-10-31 22:12:35 +00001216 switch (x) {
1217
1218 case PROT_ARP:
1219 /*
1220 * We have to deal with two types of ARP packets:
wdenk8bde7f72003-06-27 21:31:46 +00001221 * - REQUEST packets will be answered by sending our
1222 * IP address - if we know it.
1223 * - REPLY packates are expected only after we asked
1224 * for the TFTP server's or the gateway's ethernet
1225 * address; so if we receive such a packet, we set
1226 * the server ethernet address
wdenk2d966952002-10-31 22:12:35 +00001227 */
1228#ifdef ET_DEBUG
wdenk4b9206e2004-03-23 22:14:11 +00001229 puts ("Got ARP\n");
wdenk2d966952002-10-31 22:12:35 +00001230#endif
1231 arp = (ARP_t *)ip;
1232 if (len < ARP_HDR_SIZE) {
1233 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1234 return;
1235 }
1236 if (ntohs(arp->ar_hrd) != ARP_ETHER) {
1237 return;
1238 }
1239 if (ntohs(arp->ar_pro) != PROT_IP) {
1240 return;
1241 }
1242 if (arp->ar_hln != 6) {
1243 return;
1244 }
1245 if (arp->ar_pln != 4) {
1246 return;
1247 }
1248
1249 if (NetOurIP == 0) {
1250 return;
1251 }
1252
1253 if (NetReadIP(&arp->ar_data[16]) != NetOurIP) {
1254 return;
1255 }
1256
1257 switch (ntohs(arp->ar_op)) {
1258 case ARPOP_REQUEST: /* reply with our IP address */
1259#ifdef ET_DEBUG
wdenk4b9206e2004-03-23 22:14:11 +00001260 puts ("Got ARP REQUEST, return our IP\n");
wdenk2d966952002-10-31 22:12:35 +00001261#endif
wdenka3d991b2004-04-15 21:48:45 +00001262 pkt = (uchar *)et;
1263 pkt += NetSetEther(pkt, et->et_src, PROT_ARP);
wdenk2d966952002-10-31 22:12:35 +00001264 arp->ar_op = htons(ARPOP_REPLY);
1265 memcpy (&arp->ar_data[10], &arp->ar_data[0], 6);
1266 NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]);
1267 memcpy (&arp->ar_data[ 0], NetOurEther, 6);
1268 NetCopyIP(&arp->ar_data[ 6], &NetOurIP);
wdenka3d991b2004-04-15 21:48:45 +00001269 (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001270 return;
wdenk73a8b272003-06-05 19:27:42 +00001271
1272 case ARPOP_REPLY: /* arp reply */
1273 /* are we waiting for a reply */
1274 if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC)
1275 break;
wdenk2d966952002-10-31 22:12:35 +00001276#ifdef ET_DEBUG
Mike Frysinger95823ca2009-02-11 18:23:48 -05001277 printf("Got ARP REPLY, set server/gtwy eth addr (%pM)\n",
1278 arp->ar_data);
wdenk2d966952002-10-31 22:12:35 +00001279#endif
wdenk73a8b272003-06-05 19:27:42 +00001280
1281 tmp = NetReadIP(&arp->ar_data[6]);
1282
1283 /* matched waiting packet's address */
1284 if (tmp == NetArpWaitReplyIP) {
1285#ifdef ET_DEBUG
wdenk4b9206e2004-03-23 22:14:11 +00001286 puts ("Got it\n");
wdenk73a8b272003-06-05 19:27:42 +00001287#endif
1288 /* save address for later use */
1289 memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6);
1290
wdenk68ceb292004-08-02 21:11:11 +00001291#ifdef CONFIG_NETCONSOLE
1292 (*packetHandler)(0,0,0,0);
1293#endif
wdenk73a8b272003-06-05 19:27:42 +00001294 /* modify header, and transmit it */
1295 memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6);
1296 (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize);
1297
1298 /* no arp request pending now */
1299 NetArpWaitPacketIP = 0;
1300 NetArpWaitTxPacketSize = 0;
1301 NetArpWaitPacketMAC = NULL;
1302
1303 }
wdenk2d966952002-10-31 22:12:35 +00001304 return;
1305 default:
1306#ifdef ET_DEBUG
1307 printf("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op));
1308#endif
1309 return;
1310 }
wdenk289f9322005-01-12 00:15:14 +00001311 break;
wdenk2d966952002-10-31 22:12:35 +00001312
1313 case PROT_RARP:
1314#ifdef ET_DEBUG
wdenk4b9206e2004-03-23 22:14:11 +00001315 puts ("Got RARP\n");
wdenk2d966952002-10-31 22:12:35 +00001316#endif
1317 arp = (ARP_t *)ip;
1318 if (len < ARP_HDR_SIZE) {
1319 printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
1320 return;
1321 }
1322
1323 if ((ntohs(arp->ar_op) != RARPOP_REPLY) ||
1324 (ntohs(arp->ar_hrd) != ARP_ETHER) ||
1325 (ntohs(arp->ar_pro) != PROT_IP) ||
1326 (arp->ar_hln != 6) || (arp->ar_pln != 4)) {
1327
wdenk4b9206e2004-03-23 22:14:11 +00001328 puts ("invalid RARP header\n");
wdenk2d966952002-10-31 22:12:35 +00001329 } else {
1330 NetCopyIP(&NetOurIP, &arp->ar_data[16]);
wdenk3d3befa2004-03-14 15:06:13 +00001331 if (NetServerIP == 0)
1332 NetCopyIP(&NetServerIP, &arp->ar_data[ 6]);
wdenk2d966952002-10-31 22:12:35 +00001333 memcpy (NetServerEther, &arp->ar_data[ 0], 6);
1334
1335 (*packetHandler)(0,0,0,0);
1336 }
1337 break;
1338
1339 case PROT_IP:
1340#ifdef ET_DEBUG
wdenk4b9206e2004-03-23 22:14:11 +00001341 puts ("Got IP\n");
wdenk2d966952002-10-31 22:12:35 +00001342#endif
1343 if (len < IP_HDR_SIZE) {
Wolfgang Denk25dbe982008-07-13 23:07:35 +02001344 debug ("len bad %d < %lu\n", len, (ulong)IP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001345 return;
1346 }
1347 if (len < ntohs(ip->ip_len)) {
1348 printf("len bad %d < %d\n", len, ntohs(ip->ip_len));
1349 return;
1350 }
1351 len = ntohs(ip->ip_len);
1352#ifdef ET_DEBUG
1353 printf("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff);
1354#endif
1355 if ((ip->ip_hl_v & 0xf0) != 0x40) {
1356 return;
1357 }
Peter Tyserd32c5be2008-12-01 16:26:21 -06001358 /* Can't deal with fragments */
1359 if (ip->ip_off & htons(IP_OFFS | IP_FLAGS_MFRAG)) {
wdenk2d966952002-10-31 22:12:35 +00001360 return;
1361 }
Remy Bohmer6b52cfe2008-06-03 15:48:17 +02001362 /* can't deal with headers > 20 bytes */
1363 if ((ip->ip_hl_v & 0x0f) > 0x05) {
1364 return;
1365 }
wdenk2d966952002-10-31 22:12:35 +00001366 if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) {
wdenk4b9206e2004-03-23 22:14:11 +00001367 puts ("checksum bad\n");
wdenk2d966952002-10-31 22:12:35 +00001368 return;
1369 }
1370 tmp = NetReadIP(&ip->ip_dst);
1371 if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) {
David Updegraff53a5c422007-06-11 10:41:07 -05001372#ifdef CONFIG_MCAST_TFTP
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +02001373 if (Mcast_addr != tmp)
David Updegraff53a5c422007-06-11 10:41:07 -05001374#endif
wdenk2d966952002-10-31 22:12:35 +00001375 return;
1376 }
1377 /*
1378 * watch for ICMP host redirects
1379 *
wdenk8bde7f72003-06-27 21:31:46 +00001380 * There is no real handler code (yet). We just watch
1381 * for ICMP host redirect messages. In case anybody
1382 * sees these messages: please contact me
1383 * (wd@denx.de), or - even better - send me the
1384 * necessary fixes :-)
wdenk2d966952002-10-31 22:12:35 +00001385 *
wdenk8bde7f72003-06-27 21:31:46 +00001386 * Note: in all cases where I have seen this so far
1387 * it was a problem with the router configuration,
1388 * for instance when a router was configured in the
1389 * BOOTP reply, but the TFTP server was on the same
1390 * subnet. So this is probably a warning that your
1391 * configuration might be wrong. But I'm not really
1392 * sure if there aren't any other situations.
wdenk2d966952002-10-31 22:12:35 +00001393 */
1394 if (ip->ip_p == IPPROTO_ICMP) {
1395 ICMP_t *icmph = (ICMP_t *)&(ip->udp_src);
1396
wdenk73a8b272003-06-05 19:27:42 +00001397 switch (icmph->type) {
1398 case ICMP_REDIRECT:
wdenk90dc6702005-05-03 14:12:25 +00001399 if (icmph->code != ICMP_REDIR_HOST)
1400 return;
Mike Frysingerb6446b62009-02-17 00:00:53 -05001401 printf (" ICMP Host Redirect to %pI4 ", &icmph->un.gateway);
Stefan Roese8534bf92005-08-12 20:06:52 +02001402 return;
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001403#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +00001404 case ICMP_ECHO_REPLY:
1405 /*
1406 * IP header OK. Pass the packet to the current handler.
1407 */
1408 /* XXX point to ip packet */
1409 (*packetHandler)((uchar *)ip, 0, 0, 0);
Stefan Roese8534bf92005-08-12 20:06:52 +02001410 return;
Ed Swarthout83853172007-03-07 12:14:50 -06001411 case ICMP_ECHO_REQUEST:
1412#ifdef ET_DEBUG
1413 printf ("Got ICMP ECHO REQUEST, return %d bytes \n",
1414 ETHER_HDR_SIZE + len);
1415#endif
1416 memcpy (&et->et_dest[0], &et->et_src[0], 6);
1417 memcpy (&et->et_src[ 0], NetOurEther, 6);
1418
1419 ip->ip_sum = 0;
1420 ip->ip_off = 0;
1421 NetCopyIP((void*)&ip->ip_dst, &ip->ip_src);
1422 NetCopyIP((void*)&ip->ip_src, &NetOurIP);
1423 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP >> 1);
1424
1425 icmph->type = ICMP_ECHO_REPLY;
1426 icmph->checksum = 0;
1427 icmph->checksum = ~NetCksum((uchar *)icmph,
1428 (len - IP_HDR_SIZE_NO_UDP) >> 1);
1429 (void) eth_send((uchar *)et, ETHER_HDR_SIZE + len);
1430 return;
wdenk73a8b272003-06-05 19:27:42 +00001431#endif
1432 default:
1433 return;
1434 }
wdenk2d966952002-10-31 22:12:35 +00001435 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1436 return;
1437 }
1438
Stefan Roese8534bf92005-08-12 20:06:52 +02001439#ifdef CONFIG_UDP_CHECKSUM
1440 if (ip->udp_xsum != 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001441 ulong xsum;
Stefan Roese8534bf92005-08-12 20:06:52 +02001442 ushort *sumptr;
1443 ushort sumlen;
1444
1445 xsum = ip->ip_p;
1446 xsum += (ntohs(ip->udp_len));
1447 xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff;
1448 xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff;
1449 xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff;
1450 xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff;
1451
1452 sumlen = ntohs(ip->udp_len);
1453 sumptr = (ushort *) &(ip->udp_src);
1454
1455 while (sumlen > 1) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001456 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001457
1458 sumdata = *sumptr++;
1459 xsum += ntohs(sumdata);
1460 sumlen -= 2;
1461 }
1462 if (sumlen > 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001463 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001464
1465 sumdata = *(unsigned char *) sumptr;
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001466 sumdata = (sumdata << 8) & 0xff00;
Stefan Roese8534bf92005-08-12 20:06:52 +02001467 xsum += sumdata;
1468 }
1469 while ((xsum >> 16) != 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001470 xsum = (xsum & 0x0000ffff) + ((xsum >> 16) & 0x0000ffff);
Stefan Roese8534bf92005-08-12 20:06:52 +02001471 }
1472 if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
Wolfgang Denk9b55a252008-07-11 01:16:00 +02001473 printf(" UDP wrong checksum %08lx %08x\n",
1474 xsum, ntohs(ip->udp_xsum));
Stefan Roese8534bf92005-08-12 20:06:52 +02001475 return;
1476 }
1477 }
1478#endif
1479
David Updegraff53a5c422007-06-11 10:41:07 -05001480
wdenk68ceb292004-08-02 21:11:11 +00001481#ifdef CONFIG_NETCONSOLE
1482 nc_input_packet((uchar *)ip +IP_HDR_SIZE,
1483 ntohs(ip->udp_dst),
1484 ntohs(ip->udp_src),
1485 ntohs(ip->udp_len) - 8);
1486#endif
wdenk2d966952002-10-31 22:12:35 +00001487 /*
1488 * IP header OK. Pass the packet to the current handler.
1489 */
1490 (*packetHandler)((uchar *)ip +IP_HDR_SIZE,
1491 ntohs(ip->udp_dst),
1492 ntohs(ip->udp_src),
1493 ntohs(ip->udp_len) - 8);
wdenk2d966952002-10-31 22:12:35 +00001494 break;
1495 }
1496}
1497
1498
1499/**********************************************************************/
1500
1501static int net_check_prereq (proto_t protocol)
1502{
1503 switch (protocol) {
wdenk6e592382004-04-18 17:39:38 +00001504 /* Fall through */
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001505#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +00001506 case PING:
wdenk6e592382004-04-18 17:39:38 +00001507 if (NetPingIP == 0) {
1508 puts ("*** ERROR: ping address not given\n");
1509 return (1);
1510 }
1511 goto common;
wdenk73a8b272003-06-05 19:27:42 +00001512#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001513#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +00001514 case SNTP:
1515 if (NetNtpServerIP == 0) {
1516 puts ("*** ERROR: NTP server address not given\n");
1517 return (1);
1518 }
1519 goto common;
1520#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001521#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +00001522 case NFS:
1523#endif
wdenk68ceb292004-08-02 21:11:11 +00001524 case NETCONS:
wdenk2d966952002-10-31 22:12:35 +00001525 case TFTP:
wdenk6e592382004-04-18 17:39:38 +00001526 if (NetServerIP == 0) {
1527 puts ("*** ERROR: `serverip' not set\n");
1528 return (1);
1529 }
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001530#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP)
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001531 common:
wdenk73a8b272003-06-05 19:27:42 +00001532#endif
1533
wdenk6e592382004-04-18 17:39:38 +00001534 if (NetOurIP == 0) {
1535 puts ("*** ERROR: `ipaddr' not set\n");
1536 return (1);
1537 }
1538 /* Fall through */
wdenk2d966952002-10-31 22:12:35 +00001539
1540 case DHCP:
1541 case RARP:
1542 case BOOTP:
wdenka3d991b2004-04-15 21:48:45 +00001543 case CDP:
wdenk6e592382004-04-18 17:39:38 +00001544 if (memcmp (NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
wdenk2d966952002-10-31 22:12:35 +00001545#ifdef CONFIG_NET_MULTI
wdenk6e592382004-04-18 17:39:38 +00001546 extern int eth_get_dev_index (void);
1547 int num = eth_get_dev_index ();
wdenk2d966952002-10-31 22:12:35 +00001548
wdenk6e592382004-04-18 17:39:38 +00001549 switch (num) {
1550 case -1:
wdenk2d966952002-10-31 22:12:35 +00001551 puts ("*** ERROR: No ethernet found.\n");
1552 return (1);
wdenk6e592382004-04-18 17:39:38 +00001553 case 0:
wdenk2d966952002-10-31 22:12:35 +00001554 puts ("*** ERROR: `ethaddr' not set\n");
1555 break;
wdenk6e592382004-04-18 17:39:38 +00001556 default:
wdenk8bde7f72003-06-27 21:31:46 +00001557 printf ("*** ERROR: `eth%daddr' not set\n",
wdenk2d966952002-10-31 22:12:35 +00001558 num);
1559 break;
wdenk2d966952002-10-31 22:12:35 +00001560 }
wdenk6e592382004-04-18 17:39:38 +00001561
1562 NetStartAgain ();
1563 return (2);
1564#else
1565 puts ("*** ERROR: `ethaddr' not set\n");
1566 return (1);
1567#endif
1568 }
1569 /* Fall through */
1570 default:
1571 return (0);
wdenk2d966952002-10-31 22:12:35 +00001572 }
wdenk6e592382004-04-18 17:39:38 +00001573 return (0); /* OK */
wdenk2d966952002-10-31 22:12:35 +00001574}
1575/**********************************************************************/
1576
1577int
1578NetCksumOk(uchar * ptr, int len)
1579{
1580 return !((NetCksum(ptr, len) + 1) & 0xfffe);
1581}
1582
1583
1584unsigned
1585NetCksum(uchar * ptr, int len)
1586{
1587 ulong xsum;
Stefan Roese9d2a8732005-08-31 12:55:50 +02001588 ushort *p = (ushort *)ptr;
wdenk2d966952002-10-31 22:12:35 +00001589
1590 xsum = 0;
1591 while (len-- > 0)
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +02001592 xsum += *p++;
wdenk2d966952002-10-31 22:12:35 +00001593 xsum = (xsum & 0xffff) + (xsum >> 16);
1594 xsum = (xsum & 0xffff) + (xsum >> 16);
1595 return (xsum & 0xffff);
1596}
1597
wdenka3d991b2004-04-15 21:48:45 +00001598int
1599NetEthHdrSize(void)
1600{
1601 ushort myvlanid;
wdenk2d966952002-10-31 22:12:35 +00001602
wdenka3d991b2004-04-15 21:48:45 +00001603 myvlanid = ntohs(NetOurVLAN);
1604 if (myvlanid == (ushort)-1)
1605 myvlanid = VLAN_NONE;
1606
1607 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE;
1608}
1609
1610int
wdenk2d966952002-10-31 22:12:35 +00001611NetSetEther(volatile uchar * xet, uchar * addr, uint prot)
1612{
1613 Ethernet_t *et = (Ethernet_t *)xet;
wdenka3d991b2004-04-15 21:48:45 +00001614 ushort myvlanid;
1615
1616 myvlanid = ntohs(NetOurVLAN);
1617 if (myvlanid == (ushort)-1)
1618 myvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +00001619
1620 memcpy (et->et_dest, addr, 6);
1621 memcpy (et->et_src, NetOurEther, 6);
wdenka3d991b2004-04-15 21:48:45 +00001622 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
wdenk2d966952002-10-31 22:12:35 +00001623 et->et_protlen = htons(prot);
wdenka3d991b2004-04-15 21:48:45 +00001624 return ETHER_HDR_SIZE;
1625 } else {
1626 VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet;
wdenk2d966952002-10-31 22:12:35 +00001627
wdenka3d991b2004-04-15 21:48:45 +00001628 vet->vet_vlan_type = htons(PROT_VLAN);
1629 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1630 vet->vet_type = htons(prot);
1631 return VLAN_ETHER_HDR_SIZE;
1632 }
1633}
wdenk2d966952002-10-31 22:12:35 +00001634
1635void
1636NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
1637{
Olav Morkenaf8626e2009-01-23 12:56:26 +01001638 IP_t *ip = (IP_t *)xip;
wdenk2d966952002-10-31 22:12:35 +00001639
1640 /*
1641 * If the data is an odd number of bytes, zero the
1642 * byte after the last byte so that the checksum
1643 * will work.
1644 */
1645 if (len & 1)
1646 xip[IP_HDR_SIZE + len] = 0;
1647
1648 /*
1649 * Construct an IP and UDP header.
wdenk6e592382004-04-18 17:39:38 +00001650 * (need to set no fragment bit - XXX)
wdenk2d966952002-10-31 22:12:35 +00001651 */
1652 ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
1653 ip->ip_tos = 0;
1654 ip->ip_len = htons(IP_HDR_SIZE + len);
1655 ip->ip_id = htons(NetIPID++);
Peter Tysere0c07b82008-12-01 16:26:20 -06001656 ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
wdenk2d966952002-10-31 22:12:35 +00001657 ip->ip_ttl = 255;
1658 ip->ip_p = 17; /* UDP */
1659 ip->ip_sum = 0;
1660 NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
1661 NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */
1662 ip->udp_src = htons(sport);
1663 ip->udp_dst = htons(dport);
1664 ip->udp_len = htons(8 + len);
1665 ip->udp_xsum = 0;
1666 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
1667}
1668
Wolfgang Denk77ddac92005-10-13 16:45:02 +02001669void copy_filename (char *dst, char *src, int size)
wdenk2d966952002-10-31 22:12:35 +00001670{
1671 if (*src && (*src == '"')) {
1672 ++src;
1673 --size;
1674 }
1675
1676 while ((--size > 0) && *src && (*src != '"')) {
1677 *dst++ = *src++;
1678 }
1679 *dst = '\0';
1680}
1681
Jon Loeliger610f2e92007-07-10 11:05:02 -05001682#endif
wdenk2d966952002-10-31 22:12:35 +00001683
1684void ip_to_string (IPaddr_t x, char *s)
1685{
wdenka3d991b2004-04-15 21:48:45 +00001686 x = ntohl (x);
1687 sprintf (s, "%d.%d.%d.%d",
1688 (int) ((x >> 24) & 0xff),
1689 (int) ((x >> 16) & 0xff),
1690 (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff)
wdenk6e592382004-04-18 17:39:38 +00001691 );
wdenk2d966952002-10-31 22:12:35 +00001692}
1693
wdenk73a8b272003-06-05 19:27:42 +00001694IPaddr_t string_to_ip(char *s)
wdenk2d966952002-10-31 22:12:35 +00001695{
1696 IPaddr_t addr;
wdenk73a8b272003-06-05 19:27:42 +00001697 char *e;
wdenk2d966952002-10-31 22:12:35 +00001698 int i;
1699
wdenk73a8b272003-06-05 19:27:42 +00001700 if (s == NULL)
1701 return(0);
wdenk2d966952002-10-31 22:12:35 +00001702
1703 for (addr=0, i=0; i<4; ++i) {
1704 ulong val = s ? simple_strtoul(s, &e, 10) : 0;
1705 addr <<= 8;
1706 addr |= (val & 0xFF);
1707 if (s) {
1708 s = (*e) ? e+1 : e;
1709 }
1710 }
1711
1712 return (htonl(addr));
1713}
wdenk73a8b272003-06-05 19:27:42 +00001714
wdenka3d991b2004-04-15 21:48:45 +00001715void VLAN_to_string(ushort x, char *s)
1716{
1717 x = ntohs(x);
1718
1719 if (x == (ushort)-1)
1720 x = VLAN_NONE;
1721
1722 if (x == VLAN_NONE)
1723 strcpy(s, "none");
1724 else
1725 sprintf(s, "%d", x & VLAN_IDMASK);
1726}
1727
1728ushort string_to_VLAN(char *s)
1729{
1730 ushort id;
1731
1732 if (s == NULL)
wdenkb9711de2004-04-25 13:18:40 +00001733 return htons(VLAN_NONE);
wdenka3d991b2004-04-15 21:48:45 +00001734
1735 if (*s < '0' || *s > '9')
1736 id = VLAN_NONE;
1737 else
1738 id = (ushort)simple_strtoul(s, NULL, 10);
1739
wdenkb9711de2004-04-25 13:18:40 +00001740 return htons(id);
wdenka3d991b2004-04-15 21:48:45 +00001741}
1742
wdenk73a8b272003-06-05 19:27:42 +00001743IPaddr_t getenv_IPaddr (char *var)
1744{
1745 return (string_to_ip(getenv(var)));
1746}
wdenka3d991b2004-04-15 21:48:45 +00001747
1748ushort getenv_VLAN(char *var)
1749{
1750 return (string_to_VLAN(getenv(var)));
1751}