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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
Wolfgang Denk2ea91032014-09-30 10:44:01 +02009 * SPDX-License-Identifier: GPL-2.0
wdenk2d966952002-10-31 22:12:35 +000010 */
11
12/*
13 * General Desription:
14 *
15 * The user interface supports commands for BOOTP, RARP, and TFTP.
16 * Also, we support ARP internally. Depending on available data,
17 * these interact as follows:
18 *
19 * BOOTP:
20 *
21 * Prerequisites: - own ethernet address
22 * We want: - own IP address
23 * - TFTP server IP address
24 * - name of bootfile
25 * Next step: ARP
26 *
Joe Hershbergerd22c3382012-05-23 08:00:12 +000027 * LINK_LOCAL:
28 *
29 * Prerequisites: - own ethernet address
30 * We want: - own IP address
31 * Next step: ARP
32 *
wdenk2d966952002-10-31 22:12:35 +000033 * RARP:
34 *
35 * Prerequisites: - own ethernet address
36 * We want: - own IP address
37 * - TFTP server IP address
38 * Next step: ARP
39 *
40 * ARP:
41 *
42 * Prerequisites: - own ethernet address
43 * - own IP address
44 * - TFTP server IP address
45 * We want: - TFTP server ethernet address
46 * Next step: TFTP
47 *
48 * DHCP:
49 *
Wolfgang Denkb2f50802005-08-12 23:43:12 +020050 * Prerequisites: - own ethernet address
51 * We want: - IP, Netmask, ServerIP, Gateway IP
52 * - bootfilename, lease time
53 * Next step: - TFTP
wdenk2d966952002-10-31 22:12:35 +000054 *
55 * TFTP:
56 *
57 * Prerequisites: - own ethernet address
58 * - own IP address
59 * - TFTP server IP address
60 * - TFTP server ethernet address
61 * - name of bootfile (if unknown, we use a default name
62 * derived from our own IP address)
63 * We want: - load the boot file
64 * Next step: none
wdenkcbd8a352004-02-24 02:00:03 +000065 *
66 * NFS:
67 *
68 * Prerequisites: - own ethernet address
69 * - own IP address
70 * - name of bootfile (if unknown, we use a default name
71 * derived from our own IP address)
72 * We want: - load the boot file
73 * Next step: none
wdenkea287de2005-04-01 00:25:43 +000074 *
75 * SNTP:
76 *
Wolfgang Denkb2f50802005-08-12 23:43:12 +020077 * Prerequisites: - own ethernet address
wdenkea287de2005-04-01 00:25:43 +000078 * - own IP address
79 * We want: - network time
80 * Next step: none
wdenk2d966952002-10-31 22:12:35 +000081 */
82
83
84#include <common.h>
wdenk2d966952002-10-31 22:12:35 +000085#include <command.h>
Joe Hershbergera9f51c92012-12-11 22:16:26 -060086#include <environment.h>
wdenk2d966952002-10-31 22:12:35 +000087#include <net.h>
Joe Hershberger4545f4e2012-05-23 07:58:15 +000088#if defined(CONFIG_STATUS_LED)
89#include <miiphy.h>
90#include <status_led.h>
91#endif
92#include <watchdog.h>
93#include <linux/compiler.h>
Joe Hershbergerd280d3f2012-05-23 07:58:01 +000094#include "arp.h"
wdenk2d966952002-10-31 22:12:35 +000095#include "bootp.h"
Joe Hershbergerf575ae12012-05-23 07:57:59 +000096#include "cdp.h"
Robin Getz1a32bf42009-07-20 14:53:54 -040097#if defined(CONFIG_CMD_DNS)
98#include "dns.h"
99#endif
Joe Hershbergerd22c3382012-05-23 08:00:12 +0000100#include "link_local.h"
Joe Hershberger4545f4e2012-05-23 07:58:15 +0000101#include "nfs.h"
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000102#include "ping.h"
Joe Hershberger4545f4e2012-05-23 07:58:15 +0000103#include "rarp.h"
104#if defined(CONFIG_CMD_SNTP)
105#include "sntp.h"
106#endif
107#include "tftp.h"
wdenk2d966952002-10-31 22:12:35 +0000108
Wolfgang Denkd87080b2006-03-31 18:32:53 +0200109DECLARE_GLOBAL_DATA_PTR;
110
wdenk2d966952002-10-31 22:12:35 +0000111/** BOOTP EXTENTIONS **/
112
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000113/* Our subnet mask (0=unknown) */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000114IPaddr_t NetOurSubnetMask;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000115/* Our gateways IP address */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000116IPaddr_t NetOurGatewayIP;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000117/* Our DNS IP address */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000118IPaddr_t NetOurDNSIP;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500119#if defined(CONFIG_BOOTP_DNS2)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000120/* Our 2nd DNS IP address */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000121IPaddr_t NetOurDNS2IP;
stroesefe389a82003-08-28 14:17:32 +0000122#endif
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000123/* Our NIS domain */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000124char NetOurNISDomain[32] = {0,};
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000125/* Our hostname */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000126char NetOurHostName[32] = {0,};
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000127/* Our bootpath */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000128char NetOurRootPath[64] = {0,};
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000129/* Our bootfile size in blocks */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000130ushort NetBootFileSize;
wdenk2d966952002-10-31 22:12:35 +0000131
David Updegraff53a5c422007-06-11 10:41:07 -0500132#ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */
133IPaddr_t Mcast_addr;
134#endif
135
wdenk2d966952002-10-31 22:12:35 +0000136/** END OF BOOTP EXTENTIONS **/
137
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000138/* The actual transferred size of the bootfile (in bytes) */
139ulong NetBootFileXferSize;
140/* Our ethernet address */
141uchar NetOurEther[6];
142/* Boot server enet address */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000143uchar NetServerEther[6];
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000144/* Our IP addr (0 = unknown) */
145IPaddr_t NetOurIP;
146/* Server IP addr (0 = unknown) */
147IPaddr_t NetServerIP;
148/* Current receive packet */
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000149uchar *NetRxPacket;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000150/* Current rx packet length */
151int NetRxPacketLen;
152/* IP packet ID */
153unsigned NetIPID;
154/* Ethernet bcast address */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000155uchar NetBcastAddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
156uchar NetEtherNullAddr[6];
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100157#ifdef CONFIG_API
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000158void (*push_packet)(void *, int len) = 0;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100159#endif
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000160/* Network loop state */
Joe Hershberger22f6e992012-05-23 07:59:14 +0000161enum net_loop_state net_state;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000162/* Tried all network devices */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000163int NetRestartWrap;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000164/* Network loop restarted */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000165static int NetRestarted;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000166/* At least one device configured */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000167static int NetDevExists;
wdenk2d966952002-10-31 22:12:35 +0000168
wdenk6e592382004-04-18 17:39:38 +0000169/* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000170/* default is without VLAN */
171ushort NetOurVLAN = 0xFFFF;
172/* ditto */
173ushort NetOurNativeVLAN = 0xFFFF;
wdenka3d991b2004-04-15 21:48:45 +0000174
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000175/* Boot File name */
176char BootFile[128];
wdenk2d966952002-10-31 22:12:35 +0000177
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500178#if defined(CONFIG_CMD_SNTP)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000179/* NTP server IP address */
180IPaddr_t NetNtpServerIP;
181/* offset time from UTC */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000182int NetTimeOffset;
wdenkea287de2005-04-01 00:25:43 +0000183#endif
184
Kim Phillips06370592012-10-29 13:34:33 +0000185static uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
wdenk2d966952002-10-31 22:12:35 +0000186
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000187/* Receive packet */
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000188uchar *NetRxPackets[PKTBUFSRX];
wdenk2d966952002-10-31 22:12:35 +0000189
Joe Hershbergerece223b2012-05-23 07:59:15 +0000190/* Current UDP RX packet handler */
191static rxhand_f *udp_packet_handler;
192/* Current ARP RX packet handler */
193static rxhand_f *arp_packet_handler;
Simon Glass39bccd22011-10-26 14:18:38 +0000194#ifdef CONFIG_CMD_TFTPPUT
Joe Hershbergerece223b2012-05-23 07:59:15 +0000195/* Current ICMP rx handler */
196static rxhand_icmp_f *packet_icmp_handler;
Simon Glass39bccd22011-10-26 14:18:38 +0000197#endif
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000198/* Current timeout handler */
199static thand_f *timeHandler;
200/* Time base value */
201static ulong timeStart;
202/* Current timeout value */
203static ulong timeDelta;
204/* THE transmit packet */
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000205uchar *NetTxPacket;
wdenk2d966952002-10-31 22:12:35 +0000206
Simon Glasse4bf0c52011-10-24 18:00:02 +0000207static int net_check_prereq(enum proto_t protocol);
wdenk2d966952002-10-31 22:12:35 +0000208
Remy Bohmer67b96e82009-10-28 22:13:39 +0100209static int NetTryCount;
210
Jim Linb63056d2013-08-13 19:03:05 +0800211int __maybe_unused net_busy_flag;
212
wdenk2d966952002-10-31 22:12:35 +0000213/**********************************************************************/
wdenk73a8b272003-06-05 19:27:42 +0000214
Joe Hershbergera9f51c92012-12-11 22:16:26 -0600215static int on_bootfile(const char *name, const char *value, enum env_op op,
216 int flags)
217{
218 switch (op) {
219 case env_op_create:
220 case env_op_overwrite:
221 copy_filename(BootFile, value, sizeof(BootFile));
222 break;
223 default:
224 break;
225 }
226
227 return 0;
228}
229U_BOOT_ENV_CALLBACK(bootfile, on_bootfile);
230
Simon Glasse4a3d572011-10-27 06:24:32 +0000231/*
232 * Check if autoload is enabled. If so, use either NFS or TFTP to download
233 * the boot file.
234 */
235void net_auto_load(void)
236{
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600237#if defined(CONFIG_CMD_NFS)
Simon Glasse4a3d572011-10-27 06:24:32 +0000238 const char *s = getenv("autoload");
239
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600240 if (s != NULL && strcmp(s, "NFS") == 0) {
241 /*
242 * Use NFS to load the bootfile.
243 */
244 NfsStart();
245 return;
246 }
Simon Glasse4a3d572011-10-27 06:24:32 +0000247#endif
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600248 if (getenv_yesno("autoload") == 0) {
249 /*
250 * Just use BOOTP/RARP to configure system;
251 * Do not use TFTP to load the bootfile.
252 */
253 net_set_state(NETLOOP_SUCCESS);
254 return;
Simon Glasse4a3d572011-10-27 06:24:32 +0000255 }
256 TftpStart(TFTPGET);
257}
258
Joe Hershbergercb1c9912012-05-23 07:59:21 +0000259static void NetInitLoop(void)
Heiko Schocher2f70c492009-02-10 09:38:52 +0100260{
Luca Ceresolic586ce62011-05-11 03:59:55 +0000261 static int env_changed_id;
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000262 int env_id = get_env_id();
Heiko Schocher2f70c492009-02-10 09:38:52 +0100263
264 /* update only when the environment has changed */
Michael Zaidman3c172c42009-04-04 01:43:00 +0300265 if (env_changed_id != env_id) {
Enric Balletbo i Serra23a70bf2011-05-31 21:01:47 +0000266 NetOurIP = getenv_IPaddr("ipaddr");
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000267 NetOurGatewayIP = getenv_IPaddr("gatewayip");
268 NetOurSubnetMask = getenv_IPaddr("netmask");
269 NetServerIP = getenv_IPaddr("serverip");
Heiko Schocher2f70c492009-02-10 09:38:52 +0100270 NetOurNativeVLAN = getenv_VLAN("nvlan");
Michael Zaidman3c172c42009-04-04 01:43:00 +0300271 NetOurVLAN = getenv_VLAN("vlan");
Robin Getz1a32bf42009-07-20 14:53:54 -0400272#if defined(CONFIG_CMD_DNS)
273 NetOurDNSIP = getenv_IPaddr("dnsip");
274#endif
Michael Zaidman3c172c42009-04-04 01:43:00 +0300275 env_changed_id = env_id;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100276 }
Jim Lin7315cfd2013-05-17 17:41:03 +0800277 if (eth_get_dev())
278 memcpy(NetOurEther, eth_get_dev()->enetaddr, 6);
Michael Zaidman3c172c42009-04-04 01:43:00 +0300279
Heiko Schocherda954272009-04-28 08:36:11 +0200280 return;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100281}
282
Joe Hershbergerece223b2012-05-23 07:59:15 +0000283static void net_clear_handlers(void)
284{
285 net_set_udp_handler(NULL);
286 net_set_arp_handler(NULL);
287 NetSetTimeout(0, NULL);
288}
289
290static void net_cleanup_loop(void)
291{
292 net_clear_handlers();
293}
294
Joe Hershberger46c495d2012-05-23 07:59:22 +0000295void net_init(void)
296{
297 static int first_call = 1;
298
299 if (first_call) {
300 /*
301 * Setup packet buffers, aligned correctly.
302 */
303 int i;
304
305 NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
306 NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
307 for (i = 0; i < PKTBUFSRX; i++)
308 NetRxPackets[i] = NetTxPacket + (i + 1) * PKTSIZE_ALIGN;
309
310 ArpInit();
311 net_clear_handlers();
312
313 /* Only need to setup buffer pointers once. */
314 first_call = 0;
315 }
316
317 NetInitLoop();
318}
319
wdenk73a8b272003-06-05 19:27:42 +0000320/**********************************************************************/
wdenk2d966952002-10-31 22:12:35 +0000321/*
322 * Main network processing loop.
323 */
324
Simon Glasse4bf0c52011-10-24 18:00:02 +0000325int NetLoop(enum proto_t protocol)
wdenk2d966952002-10-31 22:12:35 +0000326{
wdenk2d966952002-10-31 22:12:35 +0000327 bd_t *bd = gd->bd;
Simon Glass4793ee62011-10-24 18:00:01 +0000328 int ret = -1;
wdenk2d966952002-10-31 22:12:35 +0000329
wdenk2d966952002-10-31 22:12:35 +0000330 NetRestarted = 0;
331 NetDevExists = 0;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100332 NetTryCount = 1;
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000333 debug_cond(DEBUG_INT_STATE, "--- NetLoop Entry\n");
wdenk73a8b272003-06-05 19:27:42 +0000334
Simon Glass573f14f2011-12-10 11:08:06 +0000335 bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start");
Joe Hershberger46c495d2012-05-23 07:59:22 +0000336 net_init();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000337 if (eth_is_on_demand_init() || protocol != NETCONS) {
wdenkb1bf6f22005-04-03 14:52:59 +0000338 eth_halt();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000339 eth_set_current();
340 if (eth_init(bd) < 0) {
341 eth_halt();
342 return -1;
343 }
344 } else
345 eth_init_state_only(bd);
wdenk2d966952002-10-31 22:12:35 +0000346
347restart:
Jim Linb63056d2013-08-13 19:03:05 +0800348#ifdef CONFIG_USB_KEYBOARD
349 net_busy_flag = 0;
350#endif
Joe Hershberger22f6e992012-05-23 07:59:14 +0000351 net_set_state(NETLOOP_CONTINUE);
wdenk2d966952002-10-31 22:12:35 +0000352
353 /*
354 * Start the ball rolling with the given start function. From
355 * here on, this code is a state machine driven by received
356 * packets and timer events.
357 */
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000358 debug_cond(DEBUG_INT_STATE, "--- NetLoop Init\n");
Joe Hershbergercb1c9912012-05-23 07:59:21 +0000359 NetInitLoop();
wdenk2d966952002-10-31 22:12:35 +0000360
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000361 switch (net_check_prereq(protocol)) {
wdenk2d966952002-10-31 22:12:35 +0000362 case 1:
363 /* network not configured */
wdenkb1bf6f22005-04-03 14:52:59 +0000364 eth_halt();
Luca Ceresoli92895de2011-05-04 02:40:45 +0000365 return -1;
wdenk2d966952002-10-31 22:12:35 +0000366
wdenk2d966952002-10-31 22:12:35 +0000367 case 2:
368 /* network device not configured */
369 break;
wdenk2d966952002-10-31 22:12:35 +0000370
371 case 0:
wdenk2d966952002-10-31 22:12:35 +0000372 NetDevExists = 1;
Simon Glasse4bf0c52011-10-24 18:00:02 +0000373 NetBootFileXferSize = 0;
wdenk2d966952002-10-31 22:12:35 +0000374 switch (protocol) {
Simon Glasse4bf0c52011-10-24 18:00:02 +0000375 case TFTPGET:
Simon Glass1fb7cd42011-10-24 18:00:07 +0000376#ifdef CONFIG_CMD_TFTPPUT
377 case TFTPPUT:
378#endif
wdenk2d966952002-10-31 22:12:35 +0000379 /* always use ARP to get server ethernet address */
Simon Glasse4bf0c52011-10-24 18:00:02 +0000380 TftpStart(protocol);
wdenk2d966952002-10-31 22:12:35 +0000381 break;
Luca Ceresoli7a83af02011-05-17 00:03:40 +0000382#ifdef CONFIG_CMD_TFTPSRV
383 case TFTPSRV:
384 TftpStartServer();
385 break;
386#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500387#if defined(CONFIG_CMD_DHCP)
wdenk2d966952002-10-31 22:12:35 +0000388 case DHCP:
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600389 BootpReset();
Michael Zaidman09133f82009-07-14 23:37:12 +0300390 NetOurIP = 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:
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600396 BootpReset();
Michael Zaidman09133f82009-07-14 23:37:12 +0300397 NetOurIP = 0;
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000398 BootpRequest();
wdenk2d966952002-10-31 22:12:35 +0000399 break;
400
Peter Tyserbf6cb242010-09-30 11:25:48 -0500401#if defined(CONFIG_CMD_RARP)
wdenk2d966952002-10-31 22:12:35 +0000402 case RARP:
403 RarpTry = 0;
Michael Zaidman09133f82009-07-14 23:37:12 +0300404 NetOurIP = 0;
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000405 RarpRequest();
wdenk2d966952002-10-31 22:12:35 +0000406 break;
Peter Tyserbf6cb242010-09-30 11:25:48 -0500407#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500408#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +0000409 case PING:
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000410 ping_start();
wdenk73a8b272003-06-05 19:27:42 +0000411 break;
412#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500413#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +0000414 case NFS:
415 NfsStart();
416 break;
417#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500418#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000419 case CDP:
420 CDPStart();
421 break;
422#endif
Hannes Petermaier1f9ce302014-06-13 06:25:29 +0200423#if defined (CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
wdenk68ceb292004-08-02 21:11:11 +0000424 case NETCONS:
425 NcStart();
426 break;
427#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500428#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +0000429 case SNTP:
430 SntpStart();
431 break;
432#endif
Robin Getz1a32bf42009-07-20 14:53:54 -0400433#if defined(CONFIG_CMD_DNS)
434 case DNS:
435 DnsStart();
436 break;
437#endif
Joe Hershbergerd22c3382012-05-23 08:00:12 +0000438#if defined(CONFIG_CMD_LINK_LOCAL)
439 case LINKLOCAL:
440 link_local_start();
441 break;
442#endif
wdenk2d966952002-10-31 22:12:35 +0000443 default:
444 break;
445 }
446
wdenk2d966952002-10-31 22:12:35 +0000447 break;
448 }
449
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500450#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000451#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
452 defined(CONFIG_STATUS_LED) && \
453 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000454 /*
wdenk42d1f032003-10-15 23:53:47 +0000455 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000456 */
Luca Ceresolid3c65b02011-05-04 02:40:43 +0000457 if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR))
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000458 status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
Luca Ceresolid3c65b02011-05-04 02:40:43 +0000459 else
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000460 status_led_set(STATUS_LED_RED, STATUS_LED_ON);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200461#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000462#endif /* CONFIG_MII, ... */
Jim Linb63056d2013-08-13 19:03:05 +0800463#ifdef CONFIG_USB_KEYBOARD
464 net_busy_flag = 1;
465#endif
wdenk2d966952002-10-31 22:12:35 +0000466
467 /*
468 * Main packet reception loop. Loop receiving packets until
Joe Hershberger22f6e992012-05-23 07:59:14 +0000469 * someone sets `net_state' to a state that terminates.
wdenk2d966952002-10-31 22:12:35 +0000470 */
471 for (;;) {
472 WATCHDOG_RESET();
473#ifdef CONFIG_SHOW_ACTIVITY
Joe Hershberger48522bb2012-05-15 08:59:08 +0000474 show_activity(1);
wdenk2d966952002-10-31 22:12:35 +0000475#endif
476 /*
477 * Check the ethernet for a new packet. The ethernet
478 * receive routine will process it.
479 */
Guennadi Liakhovetski40cb90e2008-04-03 17:04:19 +0200480 eth_rx();
wdenk2d966952002-10-31 22:12:35 +0000481
482 /*
483 * Abort if ctrl-c was pressed.
484 */
485 if (ctrlc()) {
Joe Hershbergere94070c2012-05-23 07:59:24 +0000486 /* cancel any ARP that may not have completed */
487 NetArpWaitPacketIP = 0;
488
Joe Hershbergerece223b2012-05-23 07:59:15 +0000489 net_cleanup_loop();
wdenk8bde7f72003-06-27 21:31:46 +0000490 eth_halt();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000491 /* Invalidate the last protocol */
492 eth_set_last_protocol(BOOTP);
493
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000494 puts("\nAbort\n");
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000495 /* include a debug print as well incase the debug
496 messages are directed to stderr */
497 debug_cond(DEBUG_INT_STATE, "--- NetLoop Abort!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000498 goto done;
wdenk2d966952002-10-31 22:12:35 +0000499 }
500
wdenk73a8b272003-06-05 19:27:42 +0000501 ArpTimeoutCheck();
wdenk2d966952002-10-31 22:12:35 +0000502
503 /*
504 * Check for a timeout, and run the timeout handler
505 * if we have one.
506 */
wdenke0ac62d2003-08-17 18:55:18 +0000507 if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) {
wdenk2d966952002-10-31 22:12:35 +0000508 thand_f *x;
509
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500510#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000511#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
512 defined(CONFIG_STATUS_LED) && \
513 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000514 /*
wdenk42d1f032003-10-15 23:53:47 +0000515 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000516 */
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000517 if (miiphy_link(eth_get_dev()->name,
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000518 CONFIG_SYS_FAULT_MII_ADDR)) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000519 status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
wdenkfc3e2162003-10-08 22:33:00 +0000520 } else {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000521 status_led_set(STATUS_LED_RED, STATUS_LED_ON);
wdenkfc3e2162003-10-08 22:33:00 +0000522 }
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000523#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000524#endif /* CONFIG_MII, ... */
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000525 debug_cond(DEBUG_INT_STATE, "--- NetLoop timeout\n");
wdenk2d966952002-10-31 22:12:35 +0000526 x = timeHandler;
527 timeHandler = (thand_f *)0;
528 (*x)();
529 }
530
531
Joe Hershberger22f6e992012-05-23 07:59:14 +0000532 switch (net_state) {
wdenk2d966952002-10-31 22:12:35 +0000533
534 case NETLOOP_RESTART:
wdenk2d966952002-10-31 22:12:35 +0000535 NetRestarted = 1;
wdenk2d966952002-10-31 22:12:35 +0000536 goto restart;
537
538 case NETLOOP_SUCCESS:
Joe Hershbergerece223b2012-05-23 07:59:15 +0000539 net_cleanup_loop();
wdenk2d966952002-10-31 22:12:35 +0000540 if (NetBootFileXferSize > 0) {
wdenk2d966952002-10-31 22:12:35 +0000541 printf("Bytes transferred = %ld (%lx hex)\n",
542 NetBootFileXferSize,
543 NetBootFileXferSize);
Simon Glass978226d2013-02-24 17:33:24 +0000544 setenv_hex("filesize", NetBootFileXferSize);
545 setenv_hex("fileaddr", load_addr);
wdenk2d966952002-10-31 22:12:35 +0000546 }
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000547 if (protocol != NETCONS)
548 eth_halt();
549 else
550 eth_halt_state_only();
551
552 eth_set_last_protocol(protocol);
553
Simon Glass4793ee62011-10-24 18:00:01 +0000554 ret = NetBootFileXferSize;
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000555 debug_cond(DEBUG_INT_STATE, "--- NetLoop Success!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000556 goto done;
wdenk2d966952002-10-31 22:12:35 +0000557
558 case NETLOOP_FAIL:
Joe Hershbergerece223b2012-05-23 07:59:15 +0000559 net_cleanup_loop();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000560 /* Invalidate the last protocol */
561 eth_set_last_protocol(BOOTP);
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000562 debug_cond(DEBUG_INT_STATE, "--- NetLoop Fail!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000563 goto done;
Joe Hershberger22f6e992012-05-23 07:59:14 +0000564
565 case NETLOOP_CONTINUE:
566 continue;
wdenk2d966952002-10-31 22:12:35 +0000567 }
568 }
Simon Glass4793ee62011-10-24 18:00:01 +0000569
570done:
Jim Linb63056d2013-08-13 19:03:05 +0800571#ifdef CONFIG_USB_KEYBOARD
572 net_busy_flag = 0;
573#endif
Simon Glass39bccd22011-10-26 14:18:38 +0000574#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000575 /* Clear out the handlers */
Joe Hershbergerece223b2012-05-23 07:59:15 +0000576 net_set_udp_handler(NULL);
Simon Glass4793ee62011-10-24 18:00:01 +0000577 net_set_icmp_handler(NULL);
Simon Glass39bccd22011-10-26 14:18:38 +0000578#endif
Simon Glass4793ee62011-10-24 18:00:01 +0000579 return ret;
wdenk2d966952002-10-31 22:12:35 +0000580}
581
582/**********************************************************************/
583
584static void
585startAgainTimeout(void)
586{
Joe Hershberger22f6e992012-05-23 07:59:14 +0000587 net_set_state(NETLOOP_RESTART);
wdenk2d966952002-10-31 22:12:35 +0000588}
589
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000590void NetStartAgain(void)
wdenk2d966952002-10-31 22:12:35 +0000591{
wdenk6e592382004-04-18 17:39:38 +0000592 char *nretry;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100593 int retry_forever = 0;
594 unsigned long retrycnt = 0;
wdenka3d991b2004-04-15 21:48:45 +0000595
Remy Bohmer67b96e82009-10-28 22:13:39 +0100596 nretry = getenv("netretry");
597 if (nretry) {
598 if (!strcmp(nretry, "yes"))
599 retry_forever = 1;
600 else if (!strcmp(nretry, "no"))
601 retrycnt = 0;
602 else if (!strcmp(nretry, "once"))
603 retrycnt = 1;
604 else
605 retrycnt = simple_strtoul(nretry, NULL, 0);
606 } else
607 retry_forever = 1;
608
609 if ((!retry_forever) && (NetTryCount >= retrycnt)) {
610 eth_halt();
Joe Hershberger22f6e992012-05-23 07:59:14 +0000611 net_set_state(NETLOOP_FAIL);
wdenka3d991b2004-04-15 21:48:45 +0000612 return;
613 }
Remy Bohmer67b96e82009-10-28 22:13:39 +0100614
615 NetTryCount++;
616
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000617 eth_halt();
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100618#if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000619 eth_try_another(!NetRestarted);
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100620#endif
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000621 eth_init(gd->bd);
wdenk6e592382004-04-18 17:39:38 +0000622 if (NetRestartWrap) {
wdenk2d966952002-10-31 22:12:35 +0000623 NetRestartWrap = 0;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100624 if (NetDevExists) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000625 NetSetTimeout(10000UL, startAgainTimeout);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000626 net_set_udp_handler(NULL);
wdenk6e592382004-04-18 17:39:38 +0000627 } else {
Joe Hershberger22f6e992012-05-23 07:59:14 +0000628 net_set_state(NETLOOP_FAIL);
wdenk2d966952002-10-31 22:12:35 +0000629 }
wdenk6e592382004-04-18 17:39:38 +0000630 } else {
Joe Hershberger22f6e992012-05-23 07:59:14 +0000631 net_set_state(NETLOOP_RESTART);
wdenk2d966952002-10-31 22:12:35 +0000632 }
wdenk2d966952002-10-31 22:12:35 +0000633}
634
635/**********************************************************************/
636/*
637 * Miscelaneous bits.
638 */
639
Joe Hershbergerece223b2012-05-23 07:59:15 +0000640static void dummy_handler(uchar *pkt, unsigned dport,
641 IPaddr_t sip, unsigned sport,
642 unsigned len)
Joe Hershbergerd280d3f2012-05-23 07:58:01 +0000643{
Joe Hershbergerd280d3f2012-05-23 07:58:01 +0000644}
645
Joe Hershbergerece223b2012-05-23 07:59:15 +0000646rxhand_f *net_get_udp_handler(void)
wdenk2d966952002-10-31 22:12:35 +0000647{
Joe Hershbergerece223b2012-05-23 07:59:15 +0000648 return udp_packet_handler;
649}
650
651void net_set_udp_handler(rxhand_f *f)
652{
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000653 debug_cond(DEBUG_INT_STATE, "--- NetLoop UDP handler set (%p)\n", f);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000654 if (f == NULL)
655 udp_packet_handler = dummy_handler;
656 else
657 udp_packet_handler = f;
658}
659
660rxhand_f *net_get_arp_handler(void)
661{
662 return arp_packet_handler;
663}
664
665void net_set_arp_handler(rxhand_f *f)
666{
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000667 debug_cond(DEBUG_INT_STATE, "--- NetLoop ARP handler set (%p)\n", f);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000668 if (f == NULL)
669 arp_packet_handler = dummy_handler;
670 else
671 arp_packet_handler = f;
wdenk2d966952002-10-31 22:12:35 +0000672}
673
Simon Glass39bccd22011-10-26 14:18:38 +0000674#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000675void net_set_icmp_handler(rxhand_icmp_f *f)
676{
677 packet_icmp_handler = f;
678}
Simon Glass39bccd22011-10-26 14:18:38 +0000679#endif
wdenk2d966952002-10-31 22:12:35 +0000680
681void
Luca Ceresoli6b147d12011-05-04 02:40:44 +0000682NetSetTimeout(ulong iv, thand_f *f)
wdenk2d966952002-10-31 22:12:35 +0000683{
684 if (iv == 0) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000685 debug_cond(DEBUG_INT_STATE,
686 "--- NetLoop timeout handler cancelled\n");
wdenk2d966952002-10-31 22:12:35 +0000687 timeHandler = (thand_f *)0;
688 } else {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000689 debug_cond(DEBUG_INT_STATE,
690 "--- NetLoop timeout handler set (%p)\n", f);
wdenk2d966952002-10-31 22:12:35 +0000691 timeHandler = f;
wdenke0ac62d2003-08-17 18:55:18 +0000692 timeStart = get_timer(0);
Tetsuyuki Kobayashi1389f982012-06-25 02:37:27 +0000693 timeDelta = iv * CONFIG_SYS_HZ / 1000;
wdenk2d966952002-10-31 22:12:35 +0000694 }
695}
696
Joe Hershberger206d07f2012-05-23 07:58:10 +0000697int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport,
698 int payload_len)
wdenk73a8b272003-06-05 19:27:42 +0000699{
wdenka3d991b2004-04-15 21:48:45 +0000700 uchar *pkt;
Joe Hershberger92146372012-05-23 07:59:08 +0000701 int eth_hdr_size;
702 int pkt_hdr_size;
wdenka3d991b2004-04-15 21:48:45 +0000703
Joe Hershberger46c495d2012-05-23 07:59:22 +0000704 /* make sure the NetTxPacket is initialized (NetInit() was called) */
705 assert(NetTxPacket != NULL);
706 if (NetTxPacket == NULL)
707 return -1;
708
wdenk73a8b272003-06-05 19:27:42 +0000709 /* convert to new style broadcast */
710 if (dest == 0)
711 dest = 0xFFFFFFFF;
wdenk2d966952002-10-31 22:12:35 +0000712
wdenk73a8b272003-06-05 19:27:42 +0000713 /* if broadcast, make the ether address a broadcast and don't do ARP */
714 if (dest == 0xFFFFFFFF)
715 ether = NetBcastAddr;
716
Joe Hershbergere94070c2012-05-23 07:59:24 +0000717 pkt = (uchar *)NetTxPacket;
wdenk73a8b272003-06-05 19:27:42 +0000718
Joe Hershberger92146372012-05-23 07:59:08 +0000719 eth_hdr_size = NetSetEther(pkt, ether, PROT_IP);
720 pkt += eth_hdr_size;
721 net_set_udp_header(pkt, dest, dport, sport, payload_len);
722 pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE;
Robin Getz0ebf04c2009-07-23 03:01:03 -0400723
Joe Hershbergere94070c2012-05-23 07:59:24 +0000724 /* if MAC address was not discovered yet, do an ARP request */
725 if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000726 debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest);
Joe Hershberger92146372012-05-23 07:59:08 +0000727
728 /* save the ip and eth addr for the packet to send after arp */
wdenk73a8b272003-06-05 19:27:42 +0000729 NetArpWaitPacketIP = dest;
730 NetArpWaitPacketMAC = ether;
wdenka3d991b2004-04-15 21:48:45 +0000731
wdenk73a8b272003-06-05 19:27:42 +0000732 /* size of the waiting packet */
Joe Hershberger92146372012-05-23 07:59:08 +0000733 NetArpWaitTxPacketSize = pkt_hdr_size + payload_len;
wdenk73a8b272003-06-05 19:27:42 +0000734
735 /* and do the ARP request */
736 NetArpWaitTry = 1;
737 NetArpWaitTimerStart = get_timer(0);
738 ArpRequest();
739 return 1; /* waiting */
Joe Hershberger92146372012-05-23 07:59:08 +0000740 } else {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000741 debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n",
742 &dest, ether);
Joe Hershbergeradf5d932012-05-23 07:59:13 +0000743 NetSendPacket(NetTxPacket, pkt_hdr_size + payload_len);
Joe Hershberger92146372012-05-23 07:59:08 +0000744 return 0; /* transmitted */
wdenk73a8b272003-06-05 19:27:42 +0000745 }
wdenk73a8b272003-06-05 19:27:42 +0000746}
747
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200748#ifdef CONFIG_IP_DEFRAG
749/*
750 * This function collects fragments in a single packet, according
751 * to the algorithm in RFC815. It returns NULL or the pointer to
752 * a complete packet, in static storage
753 */
754#ifndef CONFIG_NET_MAXDEFRAG
755#define CONFIG_NET_MAXDEFRAG 16384
756#endif
757/*
758 * MAXDEFRAG, above, is chosen in the config file and is real data
759 * so we need to add the NFS overhead, which is more than TFTP.
760 * To use sizeof in the internal unnamed structures, we need a real
761 * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately).
762 * The compiler doesn't complain nor allocates the actual structure
763 */
764static struct rpc_t rpc_specimen;
765#define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply))
766
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000767#define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200768
769/*
770 * this is the packet being assembled, either data or frag control.
771 * Fragments go by 8 bytes, so this union must be 8 bytes long
772 */
773struct hole {
774 /* first_byte is address of this structure */
775 u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */
776 u16 next_hole; /* index of next (in 8-b blocks), 0 == none */
777 u16 prev_hole; /* index of prev, 0 == none */
778 u16 unused;
779};
780
Joe Hershberger594c26f2012-05-23 07:58:04 +0000781static struct ip_udp_hdr *__NetDefragment(struct ip_udp_hdr *ip, int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200782{
Joe Hershberger48522bb2012-05-15 08:59:08 +0000783 static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200784 static u16 first_hole, total_len;
785 struct hole *payload, *thisfrag, *h, *newh;
Joe Hershberger594c26f2012-05-23 07:58:04 +0000786 struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200787 uchar *indata = (uchar *)ip;
788 int offset8, start, len, done = 0;
789 u16 ip_off = ntohs(ip->ip_off);
790
791 /* payload starts after IP header, this fragment is in there */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000792 payload = (struct hole *)(pkt_buff + IP_HDR_SIZE);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200793 offset8 = (ip_off & IP_OFFS);
794 thisfrag = payload + offset8;
795 start = offset8 * 8;
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000796 len = ntohs(ip->ip_len) - IP_HDR_SIZE;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200797
798 if (start + len > IP_MAXUDP) /* fragment extends too far */
799 return NULL;
800
801 if (!total_len || localip->ip_id != ip->ip_id) {
802 /* new (or different) packet, reset structs */
803 total_len = 0xffff;
804 payload[0].last_byte = ~0;
805 payload[0].next_hole = 0;
806 payload[0].prev_hole = 0;
807 first_hole = 0;
808 /* any IP header will work, copy the first we received */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000809 memcpy(localip, ip, IP_HDR_SIZE);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200810 }
811
812 /*
813 * What follows is the reassembly algorithm. We use the payload
814 * array as a linked list of hole descriptors, as each hole starts
815 * at a multiple of 8 bytes. However, last byte can be whatever value,
816 * so it is represented as byte count, not as 8-byte blocks.
817 */
818
819 h = payload + first_hole;
820 while (h->last_byte < start) {
821 if (!h->next_hole) {
822 /* no hole that far away */
823 return NULL;
824 }
825 h = payload + h->next_hole;
826 }
827
Fillod Stephanee397e592010-06-11 19:26:43 +0200828 /* last fragment may be 1..7 bytes, the "+7" forces acceptance */
829 if (offset8 + ((len + 7) / 8) <= h - payload) {
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200830 /* no overlap with holes (dup fragment?) */
831 return NULL;
832 }
833
834 if (!(ip_off & IP_FLAGS_MFRAG)) {
835 /* no more fragmentss: truncate this (last) hole */
836 total_len = start + len;
837 h->last_byte = start + len;
838 }
839
840 /*
841 * There is some overlap: fix the hole list. This code doesn't
842 * deal with a fragment that overlaps with two different holes
843 * (thus being a superset of a previously-received fragment).
844 */
845
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000846 if ((h >= thisfrag) && (h->last_byte <= start + len)) {
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200847 /* complete overlap with hole: remove hole */
848 if (!h->prev_hole && !h->next_hole) {
849 /* last remaining hole */
850 done = 1;
851 } else if (!h->prev_hole) {
852 /* first hole */
853 first_hole = h->next_hole;
854 payload[h->next_hole].prev_hole = 0;
855 } else if (!h->next_hole) {
856 /* last hole */
857 payload[h->prev_hole].next_hole = 0;
858 } else {
859 /* in the middle of the list */
860 payload[h->next_hole].prev_hole = h->prev_hole;
861 payload[h->prev_hole].next_hole = h->next_hole;
862 }
863
864 } else if (h->last_byte <= start + len) {
865 /* overlaps with final part of the hole: shorten this hole */
866 h->last_byte = start;
867
868 } else if (h >= thisfrag) {
869 /* overlaps with initial part of the hole: move this hole */
870 newh = thisfrag + (len / 8);
871 *newh = *h;
872 h = newh;
873 if (h->next_hole)
874 payload[h->next_hole].prev_hole = (h - payload);
875 if (h->prev_hole)
876 payload[h->prev_hole].next_hole = (h - payload);
877 else
878 first_hole = (h - payload);
879
880 } else {
881 /* fragment sits in the middle: split the hole */
882 newh = thisfrag + (len / 8);
883 *newh = *h;
884 h->last_byte = start;
885 h->next_hole = (newh - payload);
886 newh->prev_hole = (h - payload);
887 if (newh->next_hole)
888 payload[newh->next_hole].prev_hole = (newh - payload);
889 }
890
891 /* finally copy this fragment and possibly return whole packet */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000892 memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200893 if (!done)
894 return NULL;
895
896 localip->ip_len = htons(total_len);
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000897 *lenp = total_len + IP_HDR_SIZE;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200898 return localip;
899}
900
Joe Hershberger594c26f2012-05-23 07:58:04 +0000901static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200902{
903 u16 ip_off = ntohs(ip->ip_off);
904 if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
905 return ip; /* not a fragment */
906 return __NetDefragment(ip, lenp);
907}
908
909#else /* !CONFIG_IP_DEFRAG */
910
Joe Hershberger594c26f2012-05-23 07:58:04 +0000911static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200912{
913 u16 ip_off = ntohs(ip->ip_off);
914 if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
915 return ip; /* not a fragment */
916 return NULL;
917}
918#endif
wdenka3d991b2004-04-15 21:48:45 +0000919
Simon Glass8f79bb12011-10-24 18:00:00 +0000920/**
921 * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently
922 * drop others.
923 *
924 * @parma ip IP packet containing the ICMP
925 */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000926static void receive_icmp(struct ip_udp_hdr *ip, int len,
Joe Hershbergercb487f52012-05-23 07:58:06 +0000927 IPaddr_t src_ip, struct ethernet_hdr *et)
Simon Glass8f79bb12011-10-24 18:00:00 +0000928{
Joe Hershbergere0a63072012-05-23 07:58:09 +0000929 struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src;
Simon Glass8f79bb12011-10-24 18:00:00 +0000930
931 switch (icmph->type) {
932 case ICMP_REDIRECT:
933 if (icmph->code != ICMP_REDIR_HOST)
934 return;
935 printf(" ICMP Host Redirect to %pI4 ",
936 &icmph->un.gateway);
937 break;
Simon Glass8f79bb12011-10-24 18:00:00 +0000938 default:
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000939#if defined(CONFIG_CMD_PING)
940 ping_receive(et, ip, len);
941#endif
Simon Glass39bccd22011-10-26 14:18:38 +0000942#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000943 if (packet_icmp_handler)
944 packet_icmp_handler(icmph->type, icmph->code,
945 ntohs(ip->udp_dst), src_ip, ntohs(ip->udp_src),
946 icmph->un.data, ntohs(ip->udp_len));
Simon Glass39bccd22011-10-26 14:18:38 +0000947#endif
Simon Glass8f79bb12011-10-24 18:00:00 +0000948 break;
949 }
950}
951
wdenk2d966952002-10-31 22:12:35 +0000952void
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000953NetReceive(uchar *inpkt, int len)
wdenk2d966952002-10-31 22:12:35 +0000954{
Joe Hershbergercb487f52012-05-23 07:58:06 +0000955 struct ethernet_hdr *et;
Joe Hershberger594c26f2012-05-23 07:58:04 +0000956 struct ip_udp_hdr *ip;
Joe Hershberger8d353eb2012-05-23 07:58:12 +0000957 IPaddr_t dst_ip;
Luca Ceresoli03eb1292011-04-18 06:19:50 +0000958 IPaddr_t src_ip;
Joe Hershberger8d353eb2012-05-23 07:58:12 +0000959 int eth_proto;
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500960#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000961 int iscdp;
962#endif
963 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
wdenk2d966952002-10-31 22:12:35 +0000964
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000965 debug_cond(DEBUG_NET_PKT, "packet received\n");
wdenka3d991b2004-04-15 21:48:45 +0000966
Mike Frysingerd9bec9f2009-07-18 21:04:08 -0400967 NetRxPacket = inpkt;
968 NetRxPacketLen = len;
Joe Hershbergercb487f52012-05-23 07:58:06 +0000969 et = (struct ethernet_hdr *)inpkt;
wdenka3d991b2004-04-15 21:48:45 +0000970
971 /* too small packet? */
972 if (len < ETHER_HDR_SIZE)
973 return;
974
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100975#ifdef CONFIG_API
976 if (push_packet) {
977 (*push_packet)(inpkt, len);
978 return;
979 }
980#endif
981
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500982#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000983 /* keep track if packet is CDP */
Joe Hershberger17351882012-05-23 07:58:00 +0000984 iscdp = is_cdp_packet(et->et_dest);
wdenka3d991b2004-04-15 21:48:45 +0000985#endif
986
987 myvlanid = ntohs(NetOurVLAN);
988 if (myvlanid == (ushort)-1)
989 myvlanid = VLAN_NONE;
990 mynvlanid = ntohs(NetOurNativeVLAN);
991 if (mynvlanid == (ushort)-1)
992 mynvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +0000993
Joe Hershberger8d353eb2012-05-23 07:58:12 +0000994 eth_proto = ntohs(et->et_protlen);
wdenk2d966952002-10-31 22:12:35 +0000995
Joe Hershberger8d353eb2012-05-23 07:58:12 +0000996 if (eth_proto < 1514) {
Joe Hershbergercb487f52012-05-23 07:58:06 +0000997 struct e802_hdr *et802 = (struct e802_hdr *)et;
wdenk2d966952002-10-31 22:12:35 +0000998 /*
Joe Hershbergerda5ebe22012-05-23 07:58:11 +0000999 * Got a 802.2 packet. Check the other protocol field.
1000 * XXX VLAN over 802.2+SNAP not implemented!
wdenk2d966952002-10-31 22:12:35 +00001001 */
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001002 eth_proto = ntohs(et802->et_prot);
wdenka3d991b2004-04-15 21:48:45 +00001003
Joe Hershberger594c26f2012-05-23 07:58:04 +00001004 ip = (struct ip_udp_hdr *)(inpkt + E802_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001005 len -= E802_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001006
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001007 } else if (eth_proto != PROT_VLAN) { /* normal packet */
Joe Hershberger594c26f2012-05-23 07:58:04 +00001008 ip = (struct ip_udp_hdr *)(inpkt + ETHER_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001009 len -= ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001010
1011 } else { /* VLAN packet */
Joe Hershbergerc68cca32012-05-23 07:58:07 +00001012 struct vlan_ethernet_hdr *vet =
1013 (struct vlan_ethernet_hdr *)et;
wdenka3d991b2004-04-15 21:48:45 +00001014
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001015 debug_cond(DEBUG_NET_PKT, "VLAN packet received\n");
Robin Getz0ebf04c2009-07-23 03:01:03 -04001016
wdenka3d991b2004-04-15 21:48:45 +00001017 /* too small packet? */
1018 if (len < VLAN_ETHER_HDR_SIZE)
1019 return;
1020
1021 /* if no VLAN active */
1022 if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001023#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001024 && iscdp == 0
1025#endif
1026 )
1027 return;
1028
1029 cti = ntohs(vet->vet_tag);
1030 vlanid = cti & VLAN_IDMASK;
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001031 eth_proto = ntohs(vet->vet_type);
wdenka3d991b2004-04-15 21:48:45 +00001032
Joe Hershberger594c26f2012-05-23 07:58:04 +00001033 ip = (struct ip_udp_hdr *)(inpkt + VLAN_ETHER_HDR_SIZE);
wdenka3d991b2004-04-15 21:48:45 +00001034 len -= VLAN_ETHER_HDR_SIZE;
wdenk2d966952002-10-31 22:12:35 +00001035 }
1036
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001037 debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto);
wdenk2d966952002-10-31 22:12:35 +00001038
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001039#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001040 if (iscdp) {
Joe Hershberger0b4c5ff2012-05-23 07:58:13 +00001041 cdp_receive((uchar *)ip, len);
wdenka3d991b2004-04-15 21:48:45 +00001042 return;
1043 }
1044#endif
1045
1046 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1047 if (vlanid == VLAN_NONE)
1048 vlanid = (mynvlanid & VLAN_IDMASK);
1049 /* not matched? */
1050 if (vlanid != (myvlanid & VLAN_IDMASK))
1051 return;
1052 }
1053
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001054 switch (eth_proto) {
wdenk2d966952002-10-31 22:12:35 +00001055
1056 case PROT_ARP:
Joe Hershbergerd280d3f2012-05-23 07:58:01 +00001057 ArpReceive(et, ip, len);
wdenk289f9322005-01-12 00:15:14 +00001058 break;
wdenk2d966952002-10-31 22:12:35 +00001059
Peter Tyserbf6cb242010-09-30 11:25:48 -05001060#ifdef CONFIG_CMD_RARP
wdenk2d966952002-10-31 22:12:35 +00001061 case PROT_RARP:
Joe Hershberger8b9c5322012-05-23 07:58:03 +00001062 rarp_receive(ip, len);
wdenk2d966952002-10-31 22:12:35 +00001063 break;
Peter Tyserbf6cb242010-09-30 11:25:48 -05001064#endif
wdenk2d966952002-10-31 22:12:35 +00001065 case PROT_IP:
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001066 debug_cond(DEBUG_NET_PKT, "Got IP\n");
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001067 /* Before we start poking the header, make sure it is there */
Joe Hershberger594c26f2012-05-23 07:58:04 +00001068 if (len < IP_UDP_HDR_SIZE) {
1069 debug("len bad %d < %lu\n", len,
1070 (ulong)IP_UDP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001071 return;
1072 }
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001073 /* Check the packet length */
wdenk2d966952002-10-31 22:12:35 +00001074 if (len < ntohs(ip->ip_len)) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001075 debug("len bad %d < %d\n", len, ntohs(ip->ip_len));
wdenk2d966952002-10-31 22:12:35 +00001076 return;
1077 }
1078 len = ntohs(ip->ip_len);
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001079 debug_cond(DEBUG_NET_PKT, "len=%d, v=%02x\n",
1080 len, ip->ip_hl_v & 0xff);
Robin Getz0ebf04c2009-07-23 03:01:03 -04001081
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001082 /* Can't deal with anything except IPv4 */
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001083 if ((ip->ip_hl_v & 0xf0) != 0x40)
wdenk2d966952002-10-31 22:12:35 +00001084 return;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001085 /* Can't deal with IP options (headers != 20 bytes) */
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001086 if ((ip->ip_hl_v & 0x0f) > 0x05)
Remy Bohmer6b52cfe2008-06-03 15:48:17 +02001087 return;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001088 /* Check the Checksum of the header */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +00001089 if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE / 2)) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001090 debug("checksum bad\n");
wdenk2d966952002-10-31 22:12:35 +00001091 return;
1092 }
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001093 /* If it is not for us, ignore it */
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001094 dst_ip = NetReadIP(&ip->ip_dst);
1095 if (NetOurIP && dst_ip != NetOurIP && dst_ip != 0xFFFFFFFF) {
David Updegraff53a5c422007-06-11 10:41:07 -05001096#ifdef CONFIG_MCAST_TFTP
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001097 if (Mcast_addr != dst_ip)
David Updegraff53a5c422007-06-11 10:41:07 -05001098#endif
Luca Ceresolic819abe2011-05-04 02:40:46 +00001099 return;
wdenk2d966952002-10-31 22:12:35 +00001100 }
Luca Ceresoli03eb1292011-04-18 06:19:50 +00001101 /* Read source IP address for later use */
1102 src_ip = NetReadIP(&ip->ip_src);
wdenk2d966952002-10-31 22:12:35 +00001103 /*
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001104 * The function returns the unchanged packet if it's not
1105 * a fragment, and either the complete packet or NULL if
1106 * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL)
1107 */
Luca Ceresoliccb9ebe2011-05-04 02:40:47 +00001108 ip = NetDefragment(ip, &len);
1109 if (!ip)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001110 return;
1111 /*
wdenk2d966952002-10-31 22:12:35 +00001112 * watch for ICMP host redirects
1113 *
wdenk8bde7f72003-06-27 21:31:46 +00001114 * There is no real handler code (yet). We just watch
1115 * for ICMP host redirect messages. In case anybody
1116 * sees these messages: please contact me
1117 * (wd@denx.de), or - even better - send me the
1118 * necessary fixes :-)
wdenk2d966952002-10-31 22:12:35 +00001119 *
wdenk8bde7f72003-06-27 21:31:46 +00001120 * Note: in all cases where I have seen this so far
1121 * it was a problem with the router configuration,
1122 * for instance when a router was configured in the
1123 * BOOTP reply, but the TFTP server was on the same
1124 * subnet. So this is probably a warning that your
1125 * configuration might be wrong. But I'm not really
1126 * sure if there aren't any other situations.
Simon Glass4793ee62011-10-24 18:00:01 +00001127 *
1128 * Simon Glass <sjg@chromium.org>: We get an ICMP when
1129 * we send a tftp packet to a dead connection, or when
1130 * there is no server at the other end.
wdenk2d966952002-10-31 22:12:35 +00001131 */
1132 if (ip->ip_p == IPPROTO_ICMP) {
Simon Glass8f79bb12011-10-24 18:00:00 +00001133 receive_icmp(ip, len, src_ip, et);
1134 return;
wdenk2d966952002-10-31 22:12:35 +00001135 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1136 return;
1137 }
1138
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001139 debug_cond(DEBUG_DEV_PKT,
1140 "received UDP (to=%pI4, from=%pI4, len=%d)\n",
1141 &dst_ip, &src_ip, len);
1142
Stefan Roese8534bf92005-08-12 20:06:52 +02001143#ifdef CONFIG_UDP_CHECKSUM
1144 if (ip->udp_xsum != 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001145 ulong xsum;
Stefan Roese8534bf92005-08-12 20:06:52 +02001146 ushort *sumptr;
1147 ushort sumlen;
1148
1149 xsum = ip->ip_p;
1150 xsum += (ntohs(ip->udp_len));
1151 xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff;
1152 xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff;
1153 xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff;
1154 xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff;
1155
1156 sumlen = ntohs(ip->udp_len);
1157 sumptr = (ushort *) &(ip->udp_src);
1158
1159 while (sumlen > 1) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001160 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001161
1162 sumdata = *sumptr++;
1163 xsum += ntohs(sumdata);
1164 sumlen -= 2;
1165 }
1166 if (sumlen > 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001167 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001168
1169 sumdata = *(unsigned char *) sumptr;
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001170 sumdata = (sumdata << 8) & 0xff00;
Stefan Roese8534bf92005-08-12 20:06:52 +02001171 xsum += sumdata;
1172 }
1173 while ((xsum >> 16) != 0) {
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001174 xsum = (xsum & 0x0000ffff) +
1175 ((xsum >> 16) & 0x0000ffff);
Stefan Roese8534bf92005-08-12 20:06:52 +02001176 }
1177 if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
Wolfgang Denk9b55a252008-07-11 01:16:00 +02001178 printf(" UDP wrong checksum %08lx %08x\n",
1179 xsum, ntohs(ip->udp_xsum));
Stefan Roese8534bf92005-08-12 20:06:52 +02001180 return;
1181 }
1182 }
1183#endif
1184
David Updegraff53a5c422007-06-11 10:41:07 -05001185
Hannes Petermaier1f9ce302014-06-13 06:25:29 +02001186#if defined (CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
Joe Hershberger594c26f2012-05-23 07:58:04 +00001187 nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE,
Joe Hershberger8cab08e2012-10-03 09:14:03 +00001188 src_ip,
Joe Hershberger594c26f2012-05-23 07:58:04 +00001189 ntohs(ip->udp_dst),
1190 ntohs(ip->udp_src),
1191 ntohs(ip->udp_len) - UDP_HDR_SIZE);
wdenk68ceb292004-08-02 21:11:11 +00001192#endif
wdenk2d966952002-10-31 22:12:35 +00001193 /*
1194 * IP header OK. Pass the packet to the current handler.
1195 */
Joe Hershbergerece223b2012-05-23 07:59:15 +00001196 (*udp_packet_handler)((uchar *)ip + IP_UDP_HDR_SIZE,
1197 ntohs(ip->udp_dst),
1198 src_ip,
1199 ntohs(ip->udp_src),
1200 ntohs(ip->udp_len) - UDP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001201 break;
1202 }
1203}
1204
1205
1206/**********************************************************************/
1207
Simon Glasse4bf0c52011-10-24 18:00:02 +00001208static int net_check_prereq(enum proto_t protocol)
wdenk2d966952002-10-31 22:12:35 +00001209{
1210 switch (protocol) {
wdenk6e592382004-04-18 17:39:38 +00001211 /* Fall through */
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001212#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +00001213 case PING:
wdenk6e592382004-04-18 17:39:38 +00001214 if (NetPingIP == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001215 puts("*** ERROR: ping address not given\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001216 return 1;
wdenk6e592382004-04-18 17:39:38 +00001217 }
1218 goto common;
wdenk73a8b272003-06-05 19:27:42 +00001219#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001220#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +00001221 case SNTP:
1222 if (NetNtpServerIP == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001223 puts("*** ERROR: NTP server address not given\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001224 return 1;
wdenkea287de2005-04-01 00:25:43 +00001225 }
1226 goto common;
1227#endif
Robin Getz1a32bf42009-07-20 14:53:54 -04001228#if defined(CONFIG_CMD_DNS)
1229 case DNS:
1230 if (NetOurDNSIP == 0) {
1231 puts("*** ERROR: DNS server address not given\n");
1232 return 1;
1233 }
1234 goto common;
1235#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001236#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +00001237 case NFS:
1238#endif
Simon Glasse4bf0c52011-10-24 18:00:02 +00001239 case TFTPGET:
Simon Glass1fb7cd42011-10-24 18:00:07 +00001240 case TFTPPUT:
wdenk6e592382004-04-18 17:39:38 +00001241 if (NetServerIP == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001242 puts("*** ERROR: `serverip' not set\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001243 return 1;
wdenk6e592382004-04-18 17:39:38 +00001244 }
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001245#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \
1246 defined(CONFIG_CMD_DNS)
1247common:
wdenk73a8b272003-06-05 19:27:42 +00001248#endif
Simon Guinot8b6bbe12011-05-01 23:38:40 +00001249 /* Fall through */
wdenk73a8b272003-06-05 19:27:42 +00001250
Simon Guinot8b6bbe12011-05-01 23:38:40 +00001251 case NETCONS:
Luca Ceresoli7a83af02011-05-17 00:03:40 +00001252 case TFTPSRV:
wdenk6e592382004-04-18 17:39:38 +00001253 if (NetOurIP == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001254 puts("*** ERROR: `ipaddr' not set\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001255 return 1;
wdenk6e592382004-04-18 17:39:38 +00001256 }
1257 /* Fall through */
wdenk2d966952002-10-31 22:12:35 +00001258
Peter Tyserbf6cb242010-09-30 11:25:48 -05001259#ifdef CONFIG_CMD_RARP
wdenk2d966952002-10-31 22:12:35 +00001260 case RARP:
Peter Tyserbf6cb242010-09-30 11:25:48 -05001261#endif
wdenk2d966952002-10-31 22:12:35 +00001262 case BOOTP:
wdenka3d991b2004-04-15 21:48:45 +00001263 case CDP:
Peter Tyserbf6cb242010-09-30 11:25:48 -05001264 case DHCP:
Joe Hershbergerd22c3382012-05-23 08:00:12 +00001265 case LINKLOCAL:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001266 if (memcmp(NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001267 int num = eth_get_dev_index();
wdenk2d966952002-10-31 22:12:35 +00001268
wdenk6e592382004-04-18 17:39:38 +00001269 switch (num) {
1270 case -1:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001271 puts("*** ERROR: No ethernet found.\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001272 return 1;
wdenk6e592382004-04-18 17:39:38 +00001273 case 0:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001274 puts("*** ERROR: `ethaddr' not set\n");
wdenk2d966952002-10-31 22:12:35 +00001275 break;
wdenk6e592382004-04-18 17:39:38 +00001276 default:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001277 printf("*** ERROR: `eth%daddr' not set\n",
wdenk2d966952002-10-31 22:12:35 +00001278 num);
1279 break;
wdenk2d966952002-10-31 22:12:35 +00001280 }
wdenk6e592382004-04-18 17:39:38 +00001281
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001282 NetStartAgain();
Luca Ceresoli92895de2011-05-04 02:40:45 +00001283 return 2;
wdenk6e592382004-04-18 17:39:38 +00001284 }
1285 /* Fall through */
1286 default:
Luca Ceresoli92895de2011-05-04 02:40:45 +00001287 return 0;
wdenk2d966952002-10-31 22:12:35 +00001288 }
Luca Ceresoli92895de2011-05-04 02:40:45 +00001289 return 0; /* OK */
wdenk2d966952002-10-31 22:12:35 +00001290}
1291/**********************************************************************/
1292
1293int
Luca Ceresoli6b147d12011-05-04 02:40:44 +00001294NetCksumOk(uchar *ptr, int len)
wdenk2d966952002-10-31 22:12:35 +00001295{
1296 return !((NetCksum(ptr, len) + 1) & 0xfffe);
1297}
1298
1299
1300unsigned
Luca Ceresoli6b147d12011-05-04 02:40:44 +00001301NetCksum(uchar *ptr, int len)
wdenk2d966952002-10-31 22:12:35 +00001302{
1303 ulong xsum;
Stefan Roese9d2a8732005-08-31 12:55:50 +02001304 ushort *p = (ushort *)ptr;
wdenk2d966952002-10-31 22:12:35 +00001305
1306 xsum = 0;
1307 while (len-- > 0)
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +02001308 xsum += *p++;
wdenk2d966952002-10-31 22:12:35 +00001309 xsum = (xsum & 0xffff) + (xsum >> 16);
1310 xsum = (xsum & 0xffff) + (xsum >> 16);
Luca Ceresoli92895de2011-05-04 02:40:45 +00001311 return xsum & 0xffff;
wdenk2d966952002-10-31 22:12:35 +00001312}
1313
wdenka3d991b2004-04-15 21:48:45 +00001314int
1315NetEthHdrSize(void)
1316{
1317 ushort myvlanid;
wdenk2d966952002-10-31 22:12:35 +00001318
wdenka3d991b2004-04-15 21:48:45 +00001319 myvlanid = ntohs(NetOurVLAN);
1320 if (myvlanid == (ushort)-1)
1321 myvlanid = VLAN_NONE;
1322
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001323 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE :
1324 VLAN_ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001325}
1326
1327int
Joe Hershbergerdb288a92012-05-15 08:59:04 +00001328NetSetEther(uchar *xet, uchar * addr, uint prot)
wdenk2d966952002-10-31 22:12:35 +00001329{
Joe Hershbergercb487f52012-05-23 07:58:06 +00001330 struct ethernet_hdr *et = (struct ethernet_hdr *)xet;
wdenka3d991b2004-04-15 21:48:45 +00001331 ushort myvlanid;
1332
1333 myvlanid = ntohs(NetOurVLAN);
1334 if (myvlanid == (ushort)-1)
1335 myvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +00001336
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001337 memcpy(et->et_dest, addr, 6);
1338 memcpy(et->et_src, NetOurEther, 6);
wdenka3d991b2004-04-15 21:48:45 +00001339 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
Luca Ceresolic819abe2011-05-04 02:40:46 +00001340 et->et_protlen = htons(prot);
wdenka3d991b2004-04-15 21:48:45 +00001341 return ETHER_HDR_SIZE;
1342 } else {
Joe Hershbergerc68cca32012-05-23 07:58:07 +00001343 struct vlan_ethernet_hdr *vet =
1344 (struct vlan_ethernet_hdr *)xet;
wdenk2d966952002-10-31 22:12:35 +00001345
wdenka3d991b2004-04-15 21:48:45 +00001346 vet->vet_vlan_type = htons(PROT_VLAN);
1347 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1348 vet->vet_type = htons(prot);
1349 return VLAN_ETHER_HDR_SIZE;
1350 }
1351}
wdenk2d966952002-10-31 22:12:35 +00001352
Joe Hershbergere7111012012-05-23 07:59:16 +00001353int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot)
1354{
1355 ushort protlen;
1356
1357 memcpy(et->et_dest, addr, 6);
1358 memcpy(et->et_src, NetOurEther, 6);
1359 protlen = ntohs(et->et_protlen);
1360 if (protlen == PROT_VLAN) {
1361 struct vlan_ethernet_hdr *vet =
1362 (struct vlan_ethernet_hdr *)et;
1363 vet->vet_type = htons(prot);
1364 return VLAN_ETHER_HDR_SIZE;
1365 } else if (protlen > 1514) {
1366 et->et_protlen = htons(prot);
1367 return ETHER_HDR_SIZE;
1368 } else {
1369 /* 802.2 + SNAP */
1370 struct e802_hdr *et802 = (struct e802_hdr *)et;
1371 et802->et_prot = htons(prot);
1372 return E802_HDR_SIZE;
1373 }
1374}
1375
Joe Hershberger4b11c912012-05-23 07:59:07 +00001376void net_set_ip_header(uchar *pkt, IPaddr_t dest, IPaddr_t source)
wdenk2d966952002-10-31 22:12:35 +00001377{
Joe Hershberger4b11c912012-05-23 07:59:07 +00001378 struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
1379
1380 /*
1381 * Construct an IP header.
1382 */
1383 /* IP_HDR_SIZE / 4 (not including UDP) */
1384 ip->ip_hl_v = 0x45;
1385 ip->ip_tos = 0;
1386 ip->ip_len = htons(IP_HDR_SIZE);
1387 ip->ip_id = htons(NetIPID++);
1388 ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
1389 ip->ip_ttl = 255;
1390 ip->ip_sum = 0;
1391 /* already in network byte order */
1392 NetCopyIP((void *)&ip->ip_src, &source);
1393 /* already in network byte order */
1394 NetCopyIP((void *)&ip->ip_dst, &dest);
1395}
1396
1397void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport, int sport,
1398 int len)
1399{
1400 struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
wdenk2d966952002-10-31 22:12:35 +00001401
1402 /*
1403 * If the data is an odd number of bytes, zero the
1404 * byte after the last byte so that the checksum
1405 * will work.
1406 */
1407 if (len & 1)
Joe Hershberger4b11c912012-05-23 07:59:07 +00001408 pkt[IP_UDP_HDR_SIZE + len] = 0;
wdenk2d966952002-10-31 22:12:35 +00001409
Joe Hershberger4b11c912012-05-23 07:59:07 +00001410 net_set_ip_header(pkt, dest, NetOurIP);
Joe Hershberger594c26f2012-05-23 07:58:04 +00001411 ip->ip_len = htons(IP_UDP_HDR_SIZE + len);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001412 ip->ip_p = IPPROTO_UDP;
1413 ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE >> 1);
1414
wdenk2d966952002-10-31 22:12:35 +00001415 ip->udp_src = htons(sport);
1416 ip->udp_dst = htons(dport);
Joe Hershberger594c26f2012-05-23 07:58:04 +00001417 ip->udp_len = htons(UDP_HDR_SIZE + len);
wdenk2d966952002-10-31 22:12:35 +00001418 ip->udp_xsum = 0;
wdenk2d966952002-10-31 22:12:35 +00001419}
1420
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001421void copy_filename(char *dst, const char *src, int size)
wdenk2d966952002-10-31 22:12:35 +00001422{
1423 if (*src && (*src == '"')) {
1424 ++src;
1425 --size;
1426 }
1427
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001428 while ((--size > 0) && *src && (*src != '"'))
wdenk2d966952002-10-31 22:12:35 +00001429 *dst++ = *src++;
wdenk2d966952002-10-31 22:12:35 +00001430 *dst = '\0';
1431}
1432
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001433#if defined(CONFIG_CMD_NFS) || \
1434 defined(CONFIG_CMD_SNTP) || \
1435 defined(CONFIG_CMD_DNS)
Robin Getz1a32bf42009-07-20 14:53:54 -04001436/*
Robin Getz97399462010-03-08 14:07:00 -05001437 * make port a little random (1024-17407)
1438 * This keeps the math somewhat trivial to compute, and seems to work with
1439 * all supported protocols/clients/servers
Robin Getz1a32bf42009-07-20 14:53:54 -04001440 */
1441unsigned int random_port(void)
1442{
Robin Getz97399462010-03-08 14:07:00 -05001443 return 1024 + (get_timer(0) % 0x4000);
Robin Getz1a32bf42009-07-20 14:53:54 -04001444}
1445#endif
1446
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001447void ip_to_string(IPaddr_t x, char *s)
wdenk2d966952002-10-31 22:12:35 +00001448{
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001449 x = ntohl(x);
1450 sprintf(s, "%d.%d.%d.%d",
1451 (int) ((x >> 24) & 0xff),
1452 (int) ((x >> 16) & 0xff),
1453 (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff)
wdenk6e592382004-04-18 17:39:38 +00001454 );
wdenk2d966952002-10-31 22:12:35 +00001455}
1456
wdenka3d991b2004-04-15 21:48:45 +00001457void VLAN_to_string(ushort x, char *s)
1458{
1459 x = ntohs(x);
1460
1461 if (x == (ushort)-1)
1462 x = VLAN_NONE;
1463
1464 if (x == VLAN_NONE)
1465 strcpy(s, "none");
1466 else
1467 sprintf(s, "%d", x & VLAN_IDMASK);
1468}
1469
Mike Frysinger2e3ef6e2010-10-20 07:16:48 -04001470ushort string_to_VLAN(const char *s)
wdenka3d991b2004-04-15 21:48:45 +00001471{
1472 ushort id;
1473
1474 if (s == NULL)
wdenkb9711de2004-04-25 13:18:40 +00001475 return htons(VLAN_NONE);
wdenka3d991b2004-04-15 21:48:45 +00001476
1477 if (*s < '0' || *s > '9')
1478 id = VLAN_NONE;
1479 else
1480 id = (ushort)simple_strtoul(s, NULL, 10);
1481
wdenkb9711de2004-04-25 13:18:40 +00001482 return htons(id);
wdenka3d991b2004-04-15 21:48:45 +00001483}
1484
wdenka3d991b2004-04-15 21:48:45 +00001485ushort getenv_VLAN(char *var)
1486{
Luca Ceresoli92895de2011-05-04 02:40:45 +00001487 return string_to_VLAN(getenv(var));
wdenka3d991b2004-04-15 21:48:45 +00001488}