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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>
Joe Hershberger60304592015-03-22 17:09:24 -050087#include <errno.h>
wdenk2d966952002-10-31 22:12:35 +000088#include <net.h>
Joe Hershberger4545f4e2012-05-23 07:58:15 +000089#if defined(CONFIG_STATUS_LED)
90#include <miiphy.h>
91#include <status_led.h>
92#endif
93#include <watchdog.h>
94#include <linux/compiler.h>
Joe Hershbergerd280d3f2012-05-23 07:58:01 +000095#include "arp.h"
wdenk2d966952002-10-31 22:12:35 +000096#include "bootp.h"
Joe Hershbergerf575ae12012-05-23 07:57:59 +000097#include "cdp.h"
Robin Getz1a32bf42009-07-20 14:53:54 -040098#if defined(CONFIG_CMD_DNS)
99#include "dns.h"
100#endif
Joe Hershbergerd22c3382012-05-23 08:00:12 +0000101#include "link_local.h"
Joe Hershberger4545f4e2012-05-23 07:58:15 +0000102#include "nfs.h"
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000103#include "ping.h"
Joe Hershberger4545f4e2012-05-23 07:58:15 +0000104#include "rarp.h"
105#if defined(CONFIG_CMD_SNTP)
106#include "sntp.h"
107#endif
108#include "tftp.h"
wdenk2d966952002-10-31 22:12:35 +0000109
Wolfgang Denkd87080b2006-03-31 18:32:53 +0200110DECLARE_GLOBAL_DATA_PTR;
111
wdenk2d966952002-10-31 22:12:35 +0000112/** BOOTP EXTENTIONS **/
113
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000114/* Our subnet mask (0=unknown) */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500115struct in_addr net_netmask;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000116/* Our gateways IP address */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500117struct in_addr net_gateway;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000118/* Our DNS IP address */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500119struct in_addr net_dns_server;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500120#if defined(CONFIG_BOOTP_DNS2)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000121/* Our 2nd DNS IP address */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500122struct in_addr net_dns_server2;
stroesefe389a82003-08-28 14:17:32 +0000123#endif
wdenk2d966952002-10-31 22:12:35 +0000124
David Updegraff53a5c422007-06-11 10:41:07 -0500125#ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500126struct in_addr net_mcast_addr;
David Updegraff53a5c422007-06-11 10:41:07 -0500127#endif
128
wdenk2d966952002-10-31 22:12:35 +0000129/** END OF BOOTP EXTENTIONS **/
130
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000131/* Our ethernet address */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500132u8 net_ethaddr[6];
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000133/* Boot server enet address */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500134u8 net_server_ethaddr[6];
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000135/* Our IP addr (0 = unknown) */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500136struct in_addr net_ip;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000137/* Server IP addr (0 = unknown) */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500138struct in_addr net_server_ip;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000139/* Current receive packet */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500140uchar *net_rx_packet;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000141/* Current rx packet length */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500142int net_rx_packet_len;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000143/* IP packet ID */
144unsigned NetIPID;
145/* Ethernet bcast address */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500146const u8 net_bcast_ethaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
147const u8 net_null_ethaddr[6];
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100148#ifdef CONFIG_API
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000149void (*push_packet)(void *, int len) = 0;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100150#endif
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000151/* Network loop state */
Joe Hershberger22f6e992012-05-23 07:59:14 +0000152enum net_loop_state net_state;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000153/* Tried all network devices */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000154int NetRestartWrap;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000155/* Network loop restarted */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000156static int NetRestarted;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000157/* At least one device configured */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000158static int NetDevExists;
wdenk2d966952002-10-31 22:12:35 +0000159
wdenk6e592382004-04-18 17:39:38 +0000160/* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000161/* default is without VLAN */
162ushort NetOurVLAN = 0xFFFF;
163/* ditto */
164ushort NetOurNativeVLAN = 0xFFFF;
wdenka3d991b2004-04-15 21:48:45 +0000165
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000166/* Boot File name */
Joe Hershberger14111572015-04-08 01:41:02 -0500167char net_boot_file_name[128];
168/* The actual transferred size of the bootfile (in bytes) */
169u32 net_boot_file_size;
170/* Boot file size in blocks as reported by the DHCP server */
171u32 net_boot_file_expected_size_in_blocks;
wdenk2d966952002-10-31 22:12:35 +0000172
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500173#if defined(CONFIG_CMD_SNTP)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000174/* NTP server IP address */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500175struct in_addr net_ntp_server;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000176/* offset time from UTC */
Luca Ceresolic586ce62011-05-11 03:59:55 +0000177int NetTimeOffset;
wdenkea287de2005-04-01 00:25:43 +0000178#endif
179
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500180static uchar net_pkt_buf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
Joe Hershberger2a504df2015-03-22 17:09:11 -0500181/* Receive packets */
182uchar *net_rx_packets[PKTBUFSRX];
Joe Hershbergerece223b2012-05-23 07:59:15 +0000183/* Current UDP RX packet handler */
184static rxhand_f *udp_packet_handler;
185/* Current ARP RX packet handler */
186static rxhand_f *arp_packet_handler;
Simon Glass39bccd22011-10-26 14:18:38 +0000187#ifdef CONFIG_CMD_TFTPPUT
Joe Hershbergerece223b2012-05-23 07:59:15 +0000188/* Current ICMP rx handler */
189static rxhand_icmp_f *packet_icmp_handler;
Simon Glass39bccd22011-10-26 14:18:38 +0000190#endif
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000191/* Current timeout handler */
192static thand_f *timeHandler;
193/* Time base value */
194static ulong timeStart;
195/* Current timeout value */
196static ulong timeDelta;
197/* THE transmit packet */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500198uchar *net_tx_packet;
wdenk2d966952002-10-31 22:12:35 +0000199
Simon Glasse4bf0c52011-10-24 18:00:02 +0000200static int net_check_prereq(enum proto_t protocol);
wdenk2d966952002-10-31 22:12:35 +0000201
Remy Bohmer67b96e82009-10-28 22:13:39 +0100202static int NetTryCount;
203
Jim Linb63056d2013-08-13 19:03:05 +0800204int __maybe_unused net_busy_flag;
205
wdenk2d966952002-10-31 22:12:35 +0000206/**********************************************************************/
wdenk73a8b272003-06-05 19:27:42 +0000207
Joe Hershbergera9f51c92012-12-11 22:16:26 -0600208static int on_bootfile(const char *name, const char *value, enum env_op op,
209 int flags)
210{
211 switch (op) {
212 case env_op_create:
213 case env_op_overwrite:
Joe Hershberger14111572015-04-08 01:41:02 -0500214 copy_filename(net_boot_file_name, value,
215 sizeof(net_boot_file_name));
Joe Hershbergera9f51c92012-12-11 22:16:26 -0600216 break;
217 default:
218 break;
219 }
220
221 return 0;
222}
223U_BOOT_ENV_CALLBACK(bootfile, on_bootfile);
224
Simon Glasse4a3d572011-10-27 06:24:32 +0000225/*
226 * Check if autoload is enabled. If so, use either NFS or TFTP to download
227 * the boot file.
228 */
229void net_auto_load(void)
230{
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600231#if defined(CONFIG_CMD_NFS)
Simon Glasse4a3d572011-10-27 06:24:32 +0000232 const char *s = getenv("autoload");
233
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600234 if (s != NULL && strcmp(s, "NFS") == 0) {
235 /*
236 * Use NFS to load the bootfile.
237 */
238 NfsStart();
239 return;
240 }
Simon Glasse4a3d572011-10-27 06:24:32 +0000241#endif
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600242 if (getenv_yesno("autoload") == 0) {
243 /*
244 * Just use BOOTP/RARP to configure system;
245 * Do not use TFTP to load the bootfile.
246 */
247 net_set_state(NETLOOP_SUCCESS);
248 return;
Simon Glasse4a3d572011-10-27 06:24:32 +0000249 }
250 TftpStart(TFTPGET);
251}
252
Joe Hershbergercb1c9912012-05-23 07:59:21 +0000253static void NetInitLoop(void)
Heiko Schocher2f70c492009-02-10 09:38:52 +0100254{
Luca Ceresolic586ce62011-05-11 03:59:55 +0000255 static int env_changed_id;
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000256 int env_id = get_env_id();
Heiko Schocher2f70c492009-02-10 09:38:52 +0100257
258 /* update only when the environment has changed */
Michael Zaidman3c172c42009-04-04 01:43:00 +0300259 if (env_changed_id != env_id) {
Joe Hershberger049a95a2015-04-08 01:41:01 -0500260 net_ip = getenv_ip("ipaddr");
261 net_gateway = getenv_ip("gatewayip");
262 net_netmask = getenv_ip("netmask");
263 net_server_ip = getenv_ip("serverip");
Heiko Schocher2f70c492009-02-10 09:38:52 +0100264 NetOurNativeVLAN = getenv_VLAN("nvlan");
Michael Zaidman3c172c42009-04-04 01:43:00 +0300265 NetOurVLAN = getenv_VLAN("vlan");
Robin Getz1a32bf42009-07-20 14:53:54 -0400266#if defined(CONFIG_CMD_DNS)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500267 net_dns_server = getenv_ip("dnsip");
Robin Getz1a32bf42009-07-20 14:53:54 -0400268#endif
Michael Zaidman3c172c42009-04-04 01:43:00 +0300269 env_changed_id = env_id;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100270 }
Jim Lin7315cfd2013-05-17 17:41:03 +0800271 if (eth_get_dev())
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500272 memcpy(net_ethaddr, eth_get_ethaddr(), 6);
Michael Zaidman3c172c42009-04-04 01:43:00 +0300273
Heiko Schocherda954272009-04-28 08:36:11 +0200274 return;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100275}
276
Joe Hershbergerece223b2012-05-23 07:59:15 +0000277static void net_clear_handlers(void)
278{
279 net_set_udp_handler(NULL);
280 net_set_arp_handler(NULL);
281 NetSetTimeout(0, NULL);
282}
283
284static void net_cleanup_loop(void)
285{
286 net_clear_handlers();
287}
288
Joe Hershberger46c495d2012-05-23 07:59:22 +0000289void net_init(void)
290{
291 static int first_call = 1;
292
293 if (first_call) {
294 /*
295 * Setup packet buffers, aligned correctly.
296 */
297 int i;
298
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500299 net_tx_packet = &net_pkt_buf[0] + (PKTALIGN - 1);
300 net_tx_packet -= (ulong)net_tx_packet % PKTALIGN;
Joe Hershberger2a504df2015-03-22 17:09:11 -0500301 for (i = 0; i < PKTBUFSRX; i++) {
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500302 net_rx_packets[i] = net_tx_packet +
303 (i + 1) * PKTSIZE_ALIGN;
Joe Hershberger2a504df2015-03-22 17:09:11 -0500304 }
Joe Hershberger46c495d2012-05-23 07:59:22 +0000305 ArpInit();
306 net_clear_handlers();
307
308 /* Only need to setup buffer pointers once. */
309 first_call = 0;
310 }
311
312 NetInitLoop();
313}
314
wdenk73a8b272003-06-05 19:27:42 +0000315/**********************************************************************/
wdenk2d966952002-10-31 22:12:35 +0000316/*
317 * Main network processing loop.
318 */
319
Simon Glasse4bf0c52011-10-24 18:00:02 +0000320int NetLoop(enum proto_t protocol)
wdenk2d966952002-10-31 22:12:35 +0000321{
Joe Hershberger60304592015-03-22 17:09:24 -0500322 int ret = -EINVAL;
wdenk2d966952002-10-31 22:12:35 +0000323
wdenk2d966952002-10-31 22:12:35 +0000324 NetRestarted = 0;
325 NetDevExists = 0;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100326 NetTryCount = 1;
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000327 debug_cond(DEBUG_INT_STATE, "--- NetLoop Entry\n");
wdenk73a8b272003-06-05 19:27:42 +0000328
Simon Glass573f14f2011-12-10 11:08:06 +0000329 bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start");
Joe Hershberger46c495d2012-05-23 07:59:22 +0000330 net_init();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000331 if (eth_is_on_demand_init() || protocol != NETCONS) {
wdenkb1bf6f22005-04-03 14:52:59 +0000332 eth_halt();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000333 eth_set_current();
Joe Hershberger60304592015-03-22 17:09:24 -0500334 ret = eth_init();
335 if (ret < 0) {
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000336 eth_halt();
Joe Hershberger60304592015-03-22 17:09:24 -0500337 return ret;
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000338 }
339 } else
Joe Hershbergerd2eaec62015-03-22 17:09:06 -0500340 eth_init_state_only();
wdenk2d966952002-10-31 22:12:35 +0000341
342restart:
Jim Linb63056d2013-08-13 19:03:05 +0800343#ifdef CONFIG_USB_KEYBOARD
344 net_busy_flag = 0;
345#endif
Joe Hershberger22f6e992012-05-23 07:59:14 +0000346 net_set_state(NETLOOP_CONTINUE);
wdenk2d966952002-10-31 22:12:35 +0000347
348 /*
349 * Start the ball rolling with the given start function. From
350 * here on, this code is a state machine driven by received
351 * packets and timer events.
352 */
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000353 debug_cond(DEBUG_INT_STATE, "--- NetLoop Init\n");
Joe Hershbergercb1c9912012-05-23 07:59:21 +0000354 NetInitLoop();
wdenk2d966952002-10-31 22:12:35 +0000355
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000356 switch (net_check_prereq(protocol)) {
wdenk2d966952002-10-31 22:12:35 +0000357 case 1:
358 /* network not configured */
wdenkb1bf6f22005-04-03 14:52:59 +0000359 eth_halt();
Joe Hershberger60304592015-03-22 17:09:24 -0500360 return -ENODEV;
wdenk2d966952002-10-31 22:12:35 +0000361
wdenk2d966952002-10-31 22:12:35 +0000362 case 2:
363 /* network device not configured */
364 break;
wdenk2d966952002-10-31 22:12:35 +0000365
366 case 0:
wdenk2d966952002-10-31 22:12:35 +0000367 NetDevExists = 1;
Joe Hershberger14111572015-04-08 01:41:02 -0500368 net_boot_file_size = 0;
wdenk2d966952002-10-31 22:12:35 +0000369 switch (protocol) {
Simon Glasse4bf0c52011-10-24 18:00:02 +0000370 case TFTPGET:
Simon Glass1fb7cd42011-10-24 18:00:07 +0000371#ifdef CONFIG_CMD_TFTPPUT
372 case TFTPPUT:
373#endif
wdenk2d966952002-10-31 22:12:35 +0000374 /* always use ARP to get server ethernet address */
Simon Glasse4bf0c52011-10-24 18:00:02 +0000375 TftpStart(protocol);
wdenk2d966952002-10-31 22:12:35 +0000376 break;
Luca Ceresoli7a83af02011-05-17 00:03:40 +0000377#ifdef CONFIG_CMD_TFTPSRV
378 case TFTPSRV:
379 TftpStartServer();
380 break;
381#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500382#if defined(CONFIG_CMD_DHCP)
wdenk2d966952002-10-31 22:12:35 +0000383 case DHCP:
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600384 BootpReset();
Joe Hershberger049a95a2015-04-08 01:41:01 -0500385 net_ip.s_addr = 0;
wdenk2d966952002-10-31 22:12:35 +0000386 DhcpRequest(); /* Basically same as BOOTP */
387 break;
Jon Loeliger610f2e92007-07-10 11:05:02 -0500388#endif
wdenk2d966952002-10-31 22:12:35 +0000389
390 case BOOTP:
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600391 BootpReset();
Joe Hershberger049a95a2015-04-08 01:41:01 -0500392 net_ip.s_addr = 0;
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000393 BootpRequest();
wdenk2d966952002-10-31 22:12:35 +0000394 break;
395
Peter Tyserbf6cb242010-09-30 11:25:48 -0500396#if defined(CONFIG_CMD_RARP)
wdenk2d966952002-10-31 22:12:35 +0000397 case RARP:
398 RarpTry = 0;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500399 net_ip.s_addr = 0;
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000400 RarpRequest();
wdenk2d966952002-10-31 22:12:35 +0000401 break;
Peter Tyserbf6cb242010-09-30 11:25:48 -0500402#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500403#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +0000404 case PING:
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000405 ping_start();
wdenk73a8b272003-06-05 19:27:42 +0000406 break;
407#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500408#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +0000409 case NFS:
410 NfsStart();
411 break;
412#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500413#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000414 case CDP:
415 CDPStart();
416 break;
417#endif
Hannes Petermaier1f9ce302014-06-13 06:25:29 +0200418#if defined (CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
wdenk68ceb292004-08-02 21:11:11 +0000419 case NETCONS:
420 NcStart();
421 break;
422#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500423#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +0000424 case SNTP:
425 SntpStart();
426 break;
427#endif
Robin Getz1a32bf42009-07-20 14:53:54 -0400428#if defined(CONFIG_CMD_DNS)
429 case DNS:
430 DnsStart();
431 break;
432#endif
Joe Hershbergerd22c3382012-05-23 08:00:12 +0000433#if defined(CONFIG_CMD_LINK_LOCAL)
434 case LINKLOCAL:
435 link_local_start();
436 break;
437#endif
wdenk2d966952002-10-31 22:12:35 +0000438 default:
439 break;
440 }
441
wdenk2d966952002-10-31 22:12:35 +0000442 break;
443 }
444
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500445#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000446#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
447 defined(CONFIG_STATUS_LED) && \
448 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000449 /*
wdenk42d1f032003-10-15 23:53:47 +0000450 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000451 */
Luca Ceresolid3c65b02011-05-04 02:40:43 +0000452 if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR))
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000453 status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
Luca Ceresolid3c65b02011-05-04 02:40:43 +0000454 else
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000455 status_led_set(STATUS_LED_RED, STATUS_LED_ON);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200456#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000457#endif /* CONFIG_MII, ... */
Jim Linb63056d2013-08-13 19:03:05 +0800458#ifdef CONFIG_USB_KEYBOARD
459 net_busy_flag = 1;
460#endif
wdenk2d966952002-10-31 22:12:35 +0000461
462 /*
463 * Main packet reception loop. Loop receiving packets until
Joe Hershberger22f6e992012-05-23 07:59:14 +0000464 * someone sets `net_state' to a state that terminates.
wdenk2d966952002-10-31 22:12:35 +0000465 */
466 for (;;) {
467 WATCHDOG_RESET();
468#ifdef CONFIG_SHOW_ACTIVITY
Joe Hershberger48522bb2012-05-15 08:59:08 +0000469 show_activity(1);
wdenk2d966952002-10-31 22:12:35 +0000470#endif
471 /*
472 * Check the ethernet for a new packet. The ethernet
473 * receive routine will process it.
Joe Hershberger60304592015-03-22 17:09:24 -0500474 * Most drivers return the most recent packet size, but not
475 * errors that may have happened.
wdenk2d966952002-10-31 22:12:35 +0000476 */
Guennadi Liakhovetski40cb90e2008-04-03 17:04:19 +0200477 eth_rx();
wdenk2d966952002-10-31 22:12:35 +0000478
479 /*
480 * Abort if ctrl-c was pressed.
481 */
482 if (ctrlc()) {
Joe Hershbergere94070c2012-05-23 07:59:24 +0000483 /* cancel any ARP that may not have completed */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500484 net_arp_wait_packet_ip.s_addr = 0;
Joe Hershbergere94070c2012-05-23 07:59:24 +0000485
Joe Hershbergerece223b2012-05-23 07:59:15 +0000486 net_cleanup_loop();
wdenk8bde7f72003-06-27 21:31:46 +0000487 eth_halt();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000488 /* Invalidate the last protocol */
489 eth_set_last_protocol(BOOTP);
490
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000491 puts("\nAbort\n");
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000492 /* include a debug print as well incase the debug
493 messages are directed to stderr */
494 debug_cond(DEBUG_INT_STATE, "--- NetLoop Abort!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000495 goto done;
wdenk2d966952002-10-31 22:12:35 +0000496 }
497
wdenk73a8b272003-06-05 19:27:42 +0000498 ArpTimeoutCheck();
wdenk2d966952002-10-31 22:12:35 +0000499
500 /*
501 * Check for a timeout, and run the timeout handler
502 * if we have one.
503 */
wdenke0ac62d2003-08-17 18:55:18 +0000504 if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) {
wdenk2d966952002-10-31 22:12:35 +0000505 thand_f *x;
506
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500507#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000508#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
509 defined(CONFIG_STATUS_LED) && \
510 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000511 /*
wdenk42d1f032003-10-15 23:53:47 +0000512 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000513 */
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000514 if (miiphy_link(eth_get_dev()->name,
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000515 CONFIG_SYS_FAULT_MII_ADDR)) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000516 status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
wdenkfc3e2162003-10-08 22:33:00 +0000517 } else {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000518 status_led_set(STATUS_LED_RED, STATUS_LED_ON);
wdenkfc3e2162003-10-08 22:33:00 +0000519 }
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000520#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000521#endif /* CONFIG_MII, ... */
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000522 debug_cond(DEBUG_INT_STATE, "--- NetLoop timeout\n");
wdenk2d966952002-10-31 22:12:35 +0000523 x = timeHandler;
524 timeHandler = (thand_f *)0;
525 (*x)();
526 }
527
Joe Hershberger5c421332015-03-22 17:09:07 -0500528 if (net_state == NETLOOP_FAIL)
Joe Hershberger60304592015-03-22 17:09:24 -0500529 ret = NetStartAgain();
wdenk2d966952002-10-31 22:12:35 +0000530
Joe Hershberger22f6e992012-05-23 07:59:14 +0000531 switch (net_state) {
wdenk2d966952002-10-31 22:12:35 +0000532
533 case NETLOOP_RESTART:
wdenk2d966952002-10-31 22:12:35 +0000534 NetRestarted = 1;
wdenk2d966952002-10-31 22:12:35 +0000535 goto restart;
536
537 case NETLOOP_SUCCESS:
Joe Hershbergerece223b2012-05-23 07:59:15 +0000538 net_cleanup_loop();
Joe Hershberger14111572015-04-08 01:41:02 -0500539 if (net_boot_file_size > 0) {
540 printf("Bytes transferred = %d (%x hex)\n",
541 net_boot_file_size, net_boot_file_size);
542 setenv_hex("filesize", net_boot_file_size);
Simon Glass978226d2013-02-24 17:33:24 +0000543 setenv_hex("fileaddr", load_addr);
wdenk2d966952002-10-31 22:12:35 +0000544 }
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000545 if (protocol != NETCONS)
546 eth_halt();
547 else
548 eth_halt_state_only();
549
550 eth_set_last_protocol(protocol);
551
Joe Hershberger14111572015-04-08 01:41:02 -0500552 ret = net_boot_file_size;
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000553 debug_cond(DEBUG_INT_STATE, "--- NetLoop Success!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000554 goto done;
wdenk2d966952002-10-31 22:12:35 +0000555
556 case NETLOOP_FAIL:
Joe Hershbergerece223b2012-05-23 07:59:15 +0000557 net_cleanup_loop();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000558 /* Invalidate the last protocol */
559 eth_set_last_protocol(BOOTP);
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000560 debug_cond(DEBUG_INT_STATE, "--- NetLoop Fail!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000561 goto done;
Joe Hershberger22f6e992012-05-23 07:59:14 +0000562
563 case NETLOOP_CONTINUE:
564 continue;
wdenk2d966952002-10-31 22:12:35 +0000565 }
566 }
Simon Glass4793ee62011-10-24 18:00:01 +0000567
568done:
Jim Linb63056d2013-08-13 19:03:05 +0800569#ifdef CONFIG_USB_KEYBOARD
570 net_busy_flag = 0;
571#endif
Simon Glass39bccd22011-10-26 14:18:38 +0000572#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000573 /* Clear out the handlers */
Joe Hershbergerece223b2012-05-23 07:59:15 +0000574 net_set_udp_handler(NULL);
Simon Glass4793ee62011-10-24 18:00:01 +0000575 net_set_icmp_handler(NULL);
Simon Glass39bccd22011-10-26 14:18:38 +0000576#endif
Simon Glass4793ee62011-10-24 18:00:01 +0000577 return ret;
wdenk2d966952002-10-31 22:12:35 +0000578}
579
580/**********************************************************************/
581
582static void
583startAgainTimeout(void)
584{
Joe Hershberger22f6e992012-05-23 07:59:14 +0000585 net_set_state(NETLOOP_RESTART);
wdenk2d966952002-10-31 22:12:35 +0000586}
587
Joe Hershberger60304592015-03-22 17:09:24 -0500588int NetStartAgain(void)
wdenk2d966952002-10-31 22:12:35 +0000589{
wdenk6e592382004-04-18 17:39:38 +0000590 char *nretry;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100591 int retry_forever = 0;
592 unsigned long retrycnt = 0;
Joe Hershberger60304592015-03-22 17:09:24 -0500593 int ret;
wdenka3d991b2004-04-15 21:48:45 +0000594
Remy Bohmer67b96e82009-10-28 22:13:39 +0100595 nretry = getenv("netretry");
596 if (nretry) {
597 if (!strcmp(nretry, "yes"))
598 retry_forever = 1;
599 else if (!strcmp(nretry, "no"))
600 retrycnt = 0;
601 else if (!strcmp(nretry, "once"))
602 retrycnt = 1;
603 else
604 retrycnt = simple_strtoul(nretry, NULL, 0);
Joe Hershberger5c421332015-03-22 17:09:07 -0500605 } else {
606 retrycnt = 0;
607 retry_forever = 0;
608 }
Remy Bohmer67b96e82009-10-28 22:13:39 +0100609
610 if ((!retry_forever) && (NetTryCount >= retrycnt)) {
611 eth_halt();
Joe Hershberger22f6e992012-05-23 07:59:14 +0000612 net_set_state(NETLOOP_FAIL);
Joe Hershberger60304592015-03-22 17:09:24 -0500613 /*
614 * We don't provide a way for the protocol to return an error,
615 * but this is almost always the reason.
616 */
617 return -ETIMEDOUT;
wdenka3d991b2004-04-15 21:48:45 +0000618 }
Remy Bohmer67b96e82009-10-28 22:13:39 +0100619
620 NetTryCount++;
621
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000622 eth_halt();
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100623#if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000624 eth_try_another(!NetRestarted);
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100625#endif
Joe Hershberger60304592015-03-22 17:09:24 -0500626 ret = eth_init();
wdenk6e592382004-04-18 17:39:38 +0000627 if (NetRestartWrap) {
wdenk2d966952002-10-31 22:12:35 +0000628 NetRestartWrap = 0;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100629 if (NetDevExists) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000630 NetSetTimeout(10000UL, startAgainTimeout);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000631 net_set_udp_handler(NULL);
wdenk6e592382004-04-18 17:39:38 +0000632 } else {
Joe Hershberger22f6e992012-05-23 07:59:14 +0000633 net_set_state(NETLOOP_FAIL);
wdenk2d966952002-10-31 22:12:35 +0000634 }
wdenk6e592382004-04-18 17:39:38 +0000635 } else {
Joe Hershberger22f6e992012-05-23 07:59:14 +0000636 net_set_state(NETLOOP_RESTART);
wdenk2d966952002-10-31 22:12:35 +0000637 }
Joe Hershberger60304592015-03-22 17:09:24 -0500638 return ret;
wdenk2d966952002-10-31 22:12:35 +0000639}
640
641/**********************************************************************/
642/*
643 * Miscelaneous bits.
644 */
645
Joe Hershbergerece223b2012-05-23 07:59:15 +0000646static void dummy_handler(uchar *pkt, unsigned dport,
Joe Hershberger049a95a2015-04-08 01:41:01 -0500647 struct in_addr sip, unsigned sport,
Joe Hershbergerece223b2012-05-23 07:59:15 +0000648 unsigned len)
Joe Hershbergerd280d3f2012-05-23 07:58:01 +0000649{
Joe Hershbergerd280d3f2012-05-23 07:58:01 +0000650}
651
Joe Hershbergerece223b2012-05-23 07:59:15 +0000652rxhand_f *net_get_udp_handler(void)
wdenk2d966952002-10-31 22:12:35 +0000653{
Joe Hershbergerece223b2012-05-23 07:59:15 +0000654 return udp_packet_handler;
655}
656
657void net_set_udp_handler(rxhand_f *f)
658{
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000659 debug_cond(DEBUG_INT_STATE, "--- NetLoop UDP handler set (%p)\n", f);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000660 if (f == NULL)
661 udp_packet_handler = dummy_handler;
662 else
663 udp_packet_handler = f;
664}
665
666rxhand_f *net_get_arp_handler(void)
667{
668 return arp_packet_handler;
669}
670
671void net_set_arp_handler(rxhand_f *f)
672{
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000673 debug_cond(DEBUG_INT_STATE, "--- NetLoop ARP handler set (%p)\n", f);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000674 if (f == NULL)
675 arp_packet_handler = dummy_handler;
676 else
677 arp_packet_handler = f;
wdenk2d966952002-10-31 22:12:35 +0000678}
679
Simon Glass39bccd22011-10-26 14:18:38 +0000680#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000681void net_set_icmp_handler(rxhand_icmp_f *f)
682{
683 packet_icmp_handler = f;
684}
Simon Glass39bccd22011-10-26 14:18:38 +0000685#endif
wdenk2d966952002-10-31 22:12:35 +0000686
687void
Luca Ceresoli6b147d12011-05-04 02:40:44 +0000688NetSetTimeout(ulong iv, thand_f *f)
wdenk2d966952002-10-31 22:12:35 +0000689{
690 if (iv == 0) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000691 debug_cond(DEBUG_INT_STATE,
692 "--- NetLoop timeout handler cancelled\n");
wdenk2d966952002-10-31 22:12:35 +0000693 timeHandler = (thand_f *)0;
694 } else {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000695 debug_cond(DEBUG_INT_STATE,
696 "--- NetLoop timeout handler set (%p)\n", f);
wdenk2d966952002-10-31 22:12:35 +0000697 timeHandler = f;
wdenke0ac62d2003-08-17 18:55:18 +0000698 timeStart = get_timer(0);
Tetsuyuki Kobayashi1389f982012-06-25 02:37:27 +0000699 timeDelta = iv * CONFIG_SYS_HZ / 1000;
wdenk2d966952002-10-31 22:12:35 +0000700 }
701}
702
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500703int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport,
Joe Hershberger206d07f2012-05-23 07:58:10 +0000704 int payload_len)
wdenk73a8b272003-06-05 19:27:42 +0000705{
wdenka3d991b2004-04-15 21:48:45 +0000706 uchar *pkt;
Joe Hershberger92146372012-05-23 07:59:08 +0000707 int eth_hdr_size;
708 int pkt_hdr_size;
wdenka3d991b2004-04-15 21:48:45 +0000709
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500710 /* make sure the net_tx_packet is initialized (NetInit() was called) */
711 assert(net_tx_packet != NULL);
712 if (net_tx_packet == NULL)
Joe Hershberger46c495d2012-05-23 07:59:22 +0000713 return -1;
714
wdenk73a8b272003-06-05 19:27:42 +0000715 /* convert to new style broadcast */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500716 if (dest.s_addr == 0)
717 dest.s_addr = 0xFFFFFFFF;
wdenk2d966952002-10-31 22:12:35 +0000718
wdenk73a8b272003-06-05 19:27:42 +0000719 /* if broadcast, make the ether address a broadcast and don't do ARP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500720 if (dest.s_addr == 0xFFFFFFFF)
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500721 ether = (uchar *)net_bcast_ethaddr;
wdenk73a8b272003-06-05 19:27:42 +0000722
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500723 pkt = (uchar *)net_tx_packet;
wdenk73a8b272003-06-05 19:27:42 +0000724
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500725 eth_hdr_size = net_set_ether(pkt, ether, PROT_IP);
Joe Hershberger92146372012-05-23 07:59:08 +0000726 pkt += eth_hdr_size;
727 net_set_udp_header(pkt, dest, dport, sport, payload_len);
728 pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE;
Robin Getz0ebf04c2009-07-23 03:01:03 -0400729
Joe Hershbergere94070c2012-05-23 07:59:24 +0000730 /* if MAC address was not discovered yet, do an ARP request */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500731 if (memcmp(ether, net_null_ethaddr, 6) == 0) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000732 debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest);
Joe Hershberger92146372012-05-23 07:59:08 +0000733
734 /* save the ip and eth addr for the packet to send after arp */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500735 net_arp_wait_packet_ip = dest;
wdenk73a8b272003-06-05 19:27:42 +0000736 NetArpWaitPacketMAC = ether;
wdenka3d991b2004-04-15 21:48:45 +0000737
wdenk73a8b272003-06-05 19:27:42 +0000738 /* size of the waiting packet */
Joe Hershberger92146372012-05-23 07:59:08 +0000739 NetArpWaitTxPacketSize = pkt_hdr_size + payload_len;
wdenk73a8b272003-06-05 19:27:42 +0000740
741 /* and do the ARP request */
742 NetArpWaitTry = 1;
743 NetArpWaitTimerStart = get_timer(0);
744 ArpRequest();
745 return 1; /* waiting */
Joe Hershberger92146372012-05-23 07:59:08 +0000746 } else {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000747 debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n",
748 &dest, ether);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500749 net_send_packet(net_tx_packet, pkt_hdr_size + payload_len);
Joe Hershberger92146372012-05-23 07:59:08 +0000750 return 0; /* transmitted */
wdenk73a8b272003-06-05 19:27:42 +0000751 }
wdenk73a8b272003-06-05 19:27:42 +0000752}
753
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200754#ifdef CONFIG_IP_DEFRAG
755/*
756 * This function collects fragments in a single packet, according
757 * to the algorithm in RFC815. It returns NULL or the pointer to
758 * a complete packet, in static storage
759 */
760#ifndef CONFIG_NET_MAXDEFRAG
761#define CONFIG_NET_MAXDEFRAG 16384
762#endif
763/*
764 * MAXDEFRAG, above, is chosen in the config file and is real data
765 * so we need to add the NFS overhead, which is more than TFTP.
766 * To use sizeof in the internal unnamed structures, we need a real
767 * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately).
768 * The compiler doesn't complain nor allocates the actual structure
769 */
770static struct rpc_t rpc_specimen;
771#define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply))
772
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000773#define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200774
775/*
776 * this is the packet being assembled, either data or frag control.
777 * Fragments go by 8 bytes, so this union must be 8 bytes long
778 */
779struct hole {
780 /* first_byte is address of this structure */
781 u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */
782 u16 next_hole; /* index of next (in 8-b blocks), 0 == none */
783 u16 prev_hole; /* index of prev, 0 == none */
784 u16 unused;
785};
786
Joe Hershberger594c26f2012-05-23 07:58:04 +0000787static struct ip_udp_hdr *__NetDefragment(struct ip_udp_hdr *ip, int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200788{
Joe Hershberger48522bb2012-05-15 08:59:08 +0000789 static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200790 static u16 first_hole, total_len;
791 struct hole *payload, *thisfrag, *h, *newh;
Joe Hershberger594c26f2012-05-23 07:58:04 +0000792 struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200793 uchar *indata = (uchar *)ip;
794 int offset8, start, len, done = 0;
795 u16 ip_off = ntohs(ip->ip_off);
796
797 /* payload starts after IP header, this fragment is in there */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000798 payload = (struct hole *)(pkt_buff + IP_HDR_SIZE);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200799 offset8 = (ip_off & IP_OFFS);
800 thisfrag = payload + offset8;
801 start = offset8 * 8;
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000802 len = ntohs(ip->ip_len) - IP_HDR_SIZE;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200803
804 if (start + len > IP_MAXUDP) /* fragment extends too far */
805 return NULL;
806
807 if (!total_len || localip->ip_id != ip->ip_id) {
808 /* new (or different) packet, reset structs */
809 total_len = 0xffff;
810 payload[0].last_byte = ~0;
811 payload[0].next_hole = 0;
812 payload[0].prev_hole = 0;
813 first_hole = 0;
814 /* any IP header will work, copy the first we received */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000815 memcpy(localip, ip, IP_HDR_SIZE);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200816 }
817
818 /*
819 * What follows is the reassembly algorithm. We use the payload
820 * array as a linked list of hole descriptors, as each hole starts
821 * at a multiple of 8 bytes. However, last byte can be whatever value,
822 * so it is represented as byte count, not as 8-byte blocks.
823 */
824
825 h = payload + first_hole;
826 while (h->last_byte < start) {
827 if (!h->next_hole) {
828 /* no hole that far away */
829 return NULL;
830 }
831 h = payload + h->next_hole;
832 }
833
Fillod Stephanee397e592010-06-11 19:26:43 +0200834 /* last fragment may be 1..7 bytes, the "+7" forces acceptance */
835 if (offset8 + ((len + 7) / 8) <= h - payload) {
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200836 /* no overlap with holes (dup fragment?) */
837 return NULL;
838 }
839
840 if (!(ip_off & IP_FLAGS_MFRAG)) {
841 /* no more fragmentss: truncate this (last) hole */
842 total_len = start + len;
843 h->last_byte = start + len;
844 }
845
846 /*
847 * There is some overlap: fix the hole list. This code doesn't
848 * deal with a fragment that overlaps with two different holes
849 * (thus being a superset of a previously-received fragment).
850 */
851
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000852 if ((h >= thisfrag) && (h->last_byte <= start + len)) {
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200853 /* complete overlap with hole: remove hole */
854 if (!h->prev_hole && !h->next_hole) {
855 /* last remaining hole */
856 done = 1;
857 } else if (!h->prev_hole) {
858 /* first hole */
859 first_hole = h->next_hole;
860 payload[h->next_hole].prev_hole = 0;
861 } else if (!h->next_hole) {
862 /* last hole */
863 payload[h->prev_hole].next_hole = 0;
864 } else {
865 /* in the middle of the list */
866 payload[h->next_hole].prev_hole = h->prev_hole;
867 payload[h->prev_hole].next_hole = h->next_hole;
868 }
869
870 } else if (h->last_byte <= start + len) {
871 /* overlaps with final part of the hole: shorten this hole */
872 h->last_byte = start;
873
874 } else if (h >= thisfrag) {
875 /* overlaps with initial part of the hole: move this hole */
876 newh = thisfrag + (len / 8);
877 *newh = *h;
878 h = newh;
879 if (h->next_hole)
880 payload[h->next_hole].prev_hole = (h - payload);
881 if (h->prev_hole)
882 payload[h->prev_hole].next_hole = (h - payload);
883 else
884 first_hole = (h - payload);
885
886 } else {
887 /* fragment sits in the middle: split the hole */
888 newh = thisfrag + (len / 8);
889 *newh = *h;
890 h->last_byte = start;
891 h->next_hole = (newh - payload);
892 newh->prev_hole = (h - payload);
893 if (newh->next_hole)
894 payload[newh->next_hole].prev_hole = (newh - payload);
895 }
896
897 /* finally copy this fragment and possibly return whole packet */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000898 memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200899 if (!done)
900 return NULL;
901
902 localip->ip_len = htons(total_len);
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000903 *lenp = total_len + IP_HDR_SIZE;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200904 return localip;
905}
906
Joe Hershberger594c26f2012-05-23 07:58:04 +0000907static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200908{
909 u16 ip_off = ntohs(ip->ip_off);
910 if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
911 return ip; /* not a fragment */
912 return __NetDefragment(ip, lenp);
913}
914
915#else /* !CONFIG_IP_DEFRAG */
916
Joe Hershberger594c26f2012-05-23 07:58:04 +0000917static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200918{
919 u16 ip_off = ntohs(ip->ip_off);
920 if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
921 return ip; /* not a fragment */
922 return NULL;
923}
924#endif
wdenka3d991b2004-04-15 21:48:45 +0000925
Simon Glass8f79bb12011-10-24 18:00:00 +0000926/**
927 * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently
928 * drop others.
929 *
930 * @parma ip IP packet containing the ICMP
931 */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000932static void receive_icmp(struct ip_udp_hdr *ip, int len,
Joe Hershberger049a95a2015-04-08 01:41:01 -0500933 struct in_addr src_ip, struct ethernet_hdr *et)
Simon Glass8f79bb12011-10-24 18:00:00 +0000934{
Joe Hershbergere0a63072012-05-23 07:58:09 +0000935 struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src;
Simon Glass8f79bb12011-10-24 18:00:00 +0000936
937 switch (icmph->type) {
938 case ICMP_REDIRECT:
939 if (icmph->code != ICMP_REDIR_HOST)
940 return;
941 printf(" ICMP Host Redirect to %pI4 ",
942 &icmph->un.gateway);
943 break;
Simon Glass8f79bb12011-10-24 18:00:00 +0000944 default:
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000945#if defined(CONFIG_CMD_PING)
946 ping_receive(et, ip, len);
947#endif
Simon Glass39bccd22011-10-26 14:18:38 +0000948#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000949 if (packet_icmp_handler)
950 packet_icmp_handler(icmph->type, icmph->code,
951 ntohs(ip->udp_dst), src_ip, ntohs(ip->udp_src),
952 icmph->un.data, ntohs(ip->udp_len));
Simon Glass39bccd22011-10-26 14:18:38 +0000953#endif
Simon Glass8f79bb12011-10-24 18:00:00 +0000954 break;
955 }
956}
957
Joe Hershberger2a504df2015-03-22 17:09:11 -0500958void net_process_received_packet(uchar *in_packet, int len)
wdenk2d966952002-10-31 22:12:35 +0000959{
Joe Hershbergercb487f52012-05-23 07:58:06 +0000960 struct ethernet_hdr *et;
Joe Hershberger594c26f2012-05-23 07:58:04 +0000961 struct ip_udp_hdr *ip;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500962 struct in_addr dst_ip;
963 struct in_addr src_ip;
Joe Hershberger8d353eb2012-05-23 07:58:12 +0000964 int eth_proto;
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500965#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000966 int iscdp;
967#endif
968 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
wdenk2d966952002-10-31 22:12:35 +0000969
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000970 debug_cond(DEBUG_NET_PKT, "packet received\n");
wdenka3d991b2004-04-15 21:48:45 +0000971
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500972 net_rx_packet = in_packet;
973 net_rx_packet_len = len;
Joe Hershberger2a504df2015-03-22 17:09:11 -0500974 et = (struct ethernet_hdr *)in_packet;
wdenka3d991b2004-04-15 21:48:45 +0000975
976 /* too small packet? */
977 if (len < ETHER_HDR_SIZE)
978 return;
979
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100980#ifdef CONFIG_API
981 if (push_packet) {
Joe Hershberger2a504df2015-03-22 17:09:11 -0500982 (*push_packet)(in_packet, len);
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100983 return;
984 }
985#endif
986
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500987#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000988 /* keep track if packet is CDP */
Joe Hershberger17351882012-05-23 07:58:00 +0000989 iscdp = is_cdp_packet(et->et_dest);
wdenka3d991b2004-04-15 21:48:45 +0000990#endif
991
992 myvlanid = ntohs(NetOurVLAN);
993 if (myvlanid == (ushort)-1)
994 myvlanid = VLAN_NONE;
995 mynvlanid = ntohs(NetOurNativeVLAN);
996 if (mynvlanid == (ushort)-1)
997 mynvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +0000998
Joe Hershberger8d353eb2012-05-23 07:58:12 +0000999 eth_proto = ntohs(et->et_protlen);
wdenk2d966952002-10-31 22:12:35 +00001000
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001001 if (eth_proto < 1514) {
Joe Hershbergercb487f52012-05-23 07:58:06 +00001002 struct e802_hdr *et802 = (struct e802_hdr *)et;
wdenk2d966952002-10-31 22:12:35 +00001003 /*
Joe Hershbergerda5ebe22012-05-23 07:58:11 +00001004 * Got a 802.2 packet. Check the other protocol field.
1005 * XXX VLAN over 802.2+SNAP not implemented!
wdenk2d966952002-10-31 22:12:35 +00001006 */
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001007 eth_proto = ntohs(et802->et_prot);
wdenka3d991b2004-04-15 21:48:45 +00001008
Joe Hershberger2a504df2015-03-22 17:09:11 -05001009 ip = (struct ip_udp_hdr *)(in_packet + E802_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001010 len -= E802_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001011
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001012 } else if (eth_proto != PROT_VLAN) { /* normal packet */
Joe Hershberger2a504df2015-03-22 17:09:11 -05001013 ip = (struct ip_udp_hdr *)(in_packet + ETHER_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001014 len -= ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001015
1016 } else { /* VLAN packet */
Joe Hershbergerc68cca32012-05-23 07:58:07 +00001017 struct vlan_ethernet_hdr *vet =
1018 (struct vlan_ethernet_hdr *)et;
wdenka3d991b2004-04-15 21:48:45 +00001019
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001020 debug_cond(DEBUG_NET_PKT, "VLAN packet received\n");
Robin Getz0ebf04c2009-07-23 03:01:03 -04001021
wdenka3d991b2004-04-15 21:48:45 +00001022 /* too small packet? */
1023 if (len < VLAN_ETHER_HDR_SIZE)
1024 return;
1025
1026 /* if no VLAN active */
1027 if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001028#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001029 && iscdp == 0
1030#endif
1031 )
1032 return;
1033
1034 cti = ntohs(vet->vet_tag);
1035 vlanid = cti & VLAN_IDMASK;
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001036 eth_proto = ntohs(vet->vet_type);
wdenka3d991b2004-04-15 21:48:45 +00001037
Joe Hershberger2a504df2015-03-22 17:09:11 -05001038 ip = (struct ip_udp_hdr *)(in_packet + VLAN_ETHER_HDR_SIZE);
wdenka3d991b2004-04-15 21:48:45 +00001039 len -= VLAN_ETHER_HDR_SIZE;
wdenk2d966952002-10-31 22:12:35 +00001040 }
1041
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001042 debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto);
wdenk2d966952002-10-31 22:12:35 +00001043
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001044#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001045 if (iscdp) {
Joe Hershberger0b4c5ff2012-05-23 07:58:13 +00001046 cdp_receive((uchar *)ip, len);
wdenka3d991b2004-04-15 21:48:45 +00001047 return;
1048 }
1049#endif
1050
1051 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1052 if (vlanid == VLAN_NONE)
1053 vlanid = (mynvlanid & VLAN_IDMASK);
1054 /* not matched? */
1055 if (vlanid != (myvlanid & VLAN_IDMASK))
1056 return;
1057 }
1058
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001059 switch (eth_proto) {
wdenk2d966952002-10-31 22:12:35 +00001060
1061 case PROT_ARP:
Joe Hershbergerd280d3f2012-05-23 07:58:01 +00001062 ArpReceive(et, ip, len);
wdenk289f9322005-01-12 00:15:14 +00001063 break;
wdenk2d966952002-10-31 22:12:35 +00001064
Peter Tyserbf6cb242010-09-30 11:25:48 -05001065#ifdef CONFIG_CMD_RARP
wdenk2d966952002-10-31 22:12:35 +00001066 case PROT_RARP:
Joe Hershberger8b9c5322012-05-23 07:58:03 +00001067 rarp_receive(ip, len);
wdenk2d966952002-10-31 22:12:35 +00001068 break;
Peter Tyserbf6cb242010-09-30 11:25:48 -05001069#endif
wdenk2d966952002-10-31 22:12:35 +00001070 case PROT_IP:
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001071 debug_cond(DEBUG_NET_PKT, "Got IP\n");
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001072 /* Before we start poking the header, make sure it is there */
Joe Hershberger594c26f2012-05-23 07:58:04 +00001073 if (len < IP_UDP_HDR_SIZE) {
1074 debug("len bad %d < %lu\n", len,
1075 (ulong)IP_UDP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001076 return;
1077 }
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001078 /* Check the packet length */
wdenk2d966952002-10-31 22:12:35 +00001079 if (len < ntohs(ip->ip_len)) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001080 debug("len bad %d < %d\n", len, ntohs(ip->ip_len));
wdenk2d966952002-10-31 22:12:35 +00001081 return;
1082 }
1083 len = ntohs(ip->ip_len);
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001084 debug_cond(DEBUG_NET_PKT, "len=%d, v=%02x\n",
1085 len, ip->ip_hl_v & 0xff);
Robin Getz0ebf04c2009-07-23 03:01:03 -04001086
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001087 /* Can't deal with anything except IPv4 */
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001088 if ((ip->ip_hl_v & 0xf0) != 0x40)
wdenk2d966952002-10-31 22:12:35 +00001089 return;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001090 /* Can't deal with IP options (headers != 20 bytes) */
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001091 if ((ip->ip_hl_v & 0x0f) > 0x05)
Remy Bohmer6b52cfe2008-06-03 15:48:17 +02001092 return;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001093 /* Check the Checksum of the header */
Simon Glass0da0fcd2015-01-19 22:16:08 -07001094 if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001095 debug("checksum bad\n");
wdenk2d966952002-10-31 22:12:35 +00001096 return;
1097 }
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001098 /* If it is not for us, ignore it */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001099 dst_ip = net_read_ip(&ip->ip_dst);
1100 if (net_ip.s_addr && dst_ip.s_addr != net_ip.s_addr &&
1101 dst_ip.s_addr != 0xFFFFFFFF) {
David Updegraff53a5c422007-06-11 10:41:07 -05001102#ifdef CONFIG_MCAST_TFTP
Joe Hershberger049a95a2015-04-08 01:41:01 -05001103 if (net_mcast_addr != dst_ip)
David Updegraff53a5c422007-06-11 10:41:07 -05001104#endif
Luca Ceresolic819abe2011-05-04 02:40:46 +00001105 return;
wdenk2d966952002-10-31 22:12:35 +00001106 }
Luca Ceresoli03eb1292011-04-18 06:19:50 +00001107 /* Read source IP address for later use */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001108 src_ip = net_read_ip(&ip->ip_src);
wdenk2d966952002-10-31 22:12:35 +00001109 /*
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001110 * The function returns the unchanged packet if it's not
1111 * a fragment, and either the complete packet or NULL if
1112 * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL)
1113 */
Luca Ceresoliccb9ebe2011-05-04 02:40:47 +00001114 ip = NetDefragment(ip, &len);
1115 if (!ip)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001116 return;
1117 /*
wdenk2d966952002-10-31 22:12:35 +00001118 * watch for ICMP host redirects
1119 *
wdenk8bde7f72003-06-27 21:31:46 +00001120 * There is no real handler code (yet). We just watch
1121 * for ICMP host redirect messages. In case anybody
1122 * sees these messages: please contact me
1123 * (wd@denx.de), or - even better - send me the
1124 * necessary fixes :-)
wdenk2d966952002-10-31 22:12:35 +00001125 *
wdenk8bde7f72003-06-27 21:31:46 +00001126 * Note: in all cases where I have seen this so far
1127 * it was a problem with the router configuration,
1128 * for instance when a router was configured in the
1129 * BOOTP reply, but the TFTP server was on the same
1130 * subnet. So this is probably a warning that your
1131 * configuration might be wrong. But I'm not really
1132 * sure if there aren't any other situations.
Simon Glass4793ee62011-10-24 18:00:01 +00001133 *
1134 * Simon Glass <sjg@chromium.org>: We get an ICMP when
1135 * we send a tftp packet to a dead connection, or when
1136 * there is no server at the other end.
wdenk2d966952002-10-31 22:12:35 +00001137 */
1138 if (ip->ip_p == IPPROTO_ICMP) {
Simon Glass8f79bb12011-10-24 18:00:00 +00001139 receive_icmp(ip, len, src_ip, et);
1140 return;
wdenk2d966952002-10-31 22:12:35 +00001141 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1142 return;
1143 }
1144
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001145 debug_cond(DEBUG_DEV_PKT,
1146 "received UDP (to=%pI4, from=%pI4, len=%d)\n",
1147 &dst_ip, &src_ip, len);
1148
Stefan Roese8534bf92005-08-12 20:06:52 +02001149#ifdef CONFIG_UDP_CHECKSUM
1150 if (ip->udp_xsum != 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001151 ulong xsum;
Stefan Roese8534bf92005-08-12 20:06:52 +02001152 ushort *sumptr;
1153 ushort sumlen;
1154
1155 xsum = ip->ip_p;
1156 xsum += (ntohs(ip->udp_len));
Joe Hershberger049a95a2015-04-08 01:41:01 -05001157 xsum += (ntohl(ip->ip_src.s_addr) >> 16) & 0x0000ffff;
1158 xsum += (ntohl(ip->ip_src.s_addr) >> 0) & 0x0000ffff;
1159 xsum += (ntohl(ip->ip_dst.s_addr) >> 16) & 0x0000ffff;
1160 xsum += (ntohl(ip->ip_dst.s_addr) >> 0) & 0x0000ffff;
Stefan Roese8534bf92005-08-12 20:06:52 +02001161
1162 sumlen = ntohs(ip->udp_len);
1163 sumptr = (ushort *) &(ip->udp_src);
1164
1165 while (sumlen > 1) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001166 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001167
1168 sumdata = *sumptr++;
1169 xsum += ntohs(sumdata);
1170 sumlen -= 2;
1171 }
1172 if (sumlen > 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001173 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001174
1175 sumdata = *(unsigned char *) sumptr;
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001176 sumdata = (sumdata << 8) & 0xff00;
Stefan Roese8534bf92005-08-12 20:06:52 +02001177 xsum += sumdata;
1178 }
1179 while ((xsum >> 16) != 0) {
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001180 xsum = (xsum & 0x0000ffff) +
1181 ((xsum >> 16) & 0x0000ffff);
Stefan Roese8534bf92005-08-12 20:06:52 +02001182 }
1183 if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
Wolfgang Denk9b55a252008-07-11 01:16:00 +02001184 printf(" UDP wrong checksum %08lx %08x\n",
1185 xsum, ntohs(ip->udp_xsum));
Stefan Roese8534bf92005-08-12 20:06:52 +02001186 return;
1187 }
1188 }
1189#endif
1190
David Updegraff53a5c422007-06-11 10:41:07 -05001191
Hannes Petermaier1f9ce302014-06-13 06:25:29 +02001192#if defined (CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
Joe Hershberger594c26f2012-05-23 07:58:04 +00001193 nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE,
Joe Hershberger8cab08e2012-10-03 09:14:03 +00001194 src_ip,
Joe Hershberger594c26f2012-05-23 07:58:04 +00001195 ntohs(ip->udp_dst),
1196 ntohs(ip->udp_src),
1197 ntohs(ip->udp_len) - UDP_HDR_SIZE);
wdenk68ceb292004-08-02 21:11:11 +00001198#endif
wdenk2d966952002-10-31 22:12:35 +00001199 /*
1200 * IP header OK. Pass the packet to the current handler.
1201 */
Joe Hershbergerece223b2012-05-23 07:59:15 +00001202 (*udp_packet_handler)((uchar *)ip + IP_UDP_HDR_SIZE,
1203 ntohs(ip->udp_dst),
1204 src_ip,
1205 ntohs(ip->udp_src),
1206 ntohs(ip->udp_len) - UDP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001207 break;
1208 }
1209}
1210
1211
1212/**********************************************************************/
1213
Simon Glasse4bf0c52011-10-24 18:00:02 +00001214static int net_check_prereq(enum proto_t protocol)
wdenk2d966952002-10-31 22:12:35 +00001215{
1216 switch (protocol) {
wdenk6e592382004-04-18 17:39:38 +00001217 /* Fall through */
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001218#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +00001219 case PING:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001220 if (net_ping_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001221 puts("*** ERROR: ping address not given\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001222 return 1;
wdenk6e592382004-04-18 17:39:38 +00001223 }
1224 goto common;
wdenk73a8b272003-06-05 19:27:42 +00001225#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001226#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +00001227 case SNTP:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001228 if (net_ntp_server.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001229 puts("*** ERROR: NTP server address not given\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001230 return 1;
wdenkea287de2005-04-01 00:25:43 +00001231 }
1232 goto common;
1233#endif
Robin Getz1a32bf42009-07-20 14:53:54 -04001234#if defined(CONFIG_CMD_DNS)
1235 case DNS:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001236 if (net_dns_server.s_addr == 0) {
Robin Getz1a32bf42009-07-20 14:53:54 -04001237 puts("*** ERROR: DNS server address not given\n");
1238 return 1;
1239 }
1240 goto common;
1241#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001242#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +00001243 case NFS:
1244#endif
Simon Glasse4bf0c52011-10-24 18:00:02 +00001245 case TFTPGET:
Simon Glass1fb7cd42011-10-24 18:00:07 +00001246 case TFTPPUT:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001247 if (net_server_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001248 puts("*** ERROR: `serverip' not set\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001249 return 1;
wdenk6e592382004-04-18 17:39:38 +00001250 }
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001251#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \
1252 defined(CONFIG_CMD_DNS)
1253common:
wdenk73a8b272003-06-05 19:27:42 +00001254#endif
Simon Guinot8b6bbe12011-05-01 23:38:40 +00001255 /* Fall through */
wdenk73a8b272003-06-05 19:27:42 +00001256
Simon Guinot8b6bbe12011-05-01 23:38:40 +00001257 case NETCONS:
Luca Ceresoli7a83af02011-05-17 00:03:40 +00001258 case TFTPSRV:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001259 if (net_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001260 puts("*** ERROR: `ipaddr' not set\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001261 return 1;
wdenk6e592382004-04-18 17:39:38 +00001262 }
1263 /* Fall through */
wdenk2d966952002-10-31 22:12:35 +00001264
Peter Tyserbf6cb242010-09-30 11:25:48 -05001265#ifdef CONFIG_CMD_RARP
wdenk2d966952002-10-31 22:12:35 +00001266 case RARP:
Peter Tyserbf6cb242010-09-30 11:25:48 -05001267#endif
wdenk2d966952002-10-31 22:12:35 +00001268 case BOOTP:
wdenka3d991b2004-04-15 21:48:45 +00001269 case CDP:
Peter Tyserbf6cb242010-09-30 11:25:48 -05001270 case DHCP:
Joe Hershbergerd22c3382012-05-23 08:00:12 +00001271 case LINKLOCAL:
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001272 if (memcmp(net_ethaddr, "\0\0\0\0\0\0", 6) == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001273 int num = eth_get_dev_index();
wdenk2d966952002-10-31 22:12:35 +00001274
wdenk6e592382004-04-18 17:39:38 +00001275 switch (num) {
1276 case -1:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001277 puts("*** ERROR: No ethernet found.\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001278 return 1;
wdenk6e592382004-04-18 17:39:38 +00001279 case 0:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001280 puts("*** ERROR: `ethaddr' not set\n");
wdenk2d966952002-10-31 22:12:35 +00001281 break;
wdenk6e592382004-04-18 17:39:38 +00001282 default:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001283 printf("*** ERROR: `eth%daddr' not set\n",
wdenk2d966952002-10-31 22:12:35 +00001284 num);
1285 break;
wdenk2d966952002-10-31 22:12:35 +00001286 }
wdenk6e592382004-04-18 17:39:38 +00001287
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001288 NetStartAgain();
Luca Ceresoli92895de2011-05-04 02:40:45 +00001289 return 2;
wdenk6e592382004-04-18 17:39:38 +00001290 }
1291 /* Fall through */
1292 default:
Luca Ceresoli92895de2011-05-04 02:40:45 +00001293 return 0;
wdenk2d966952002-10-31 22:12:35 +00001294 }
Luca Ceresoli92895de2011-05-04 02:40:45 +00001295 return 0; /* OK */
wdenk2d966952002-10-31 22:12:35 +00001296}
1297/**********************************************************************/
1298
1299int
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001300net_eth_hdr_size(void)
wdenka3d991b2004-04-15 21:48:45 +00001301{
1302 ushort myvlanid;
wdenk2d966952002-10-31 22:12:35 +00001303
wdenka3d991b2004-04-15 21:48:45 +00001304 myvlanid = ntohs(NetOurVLAN);
1305 if (myvlanid == (ushort)-1)
1306 myvlanid = VLAN_NONE;
1307
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001308 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE :
1309 VLAN_ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001310}
1311
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001312int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot)
wdenk2d966952002-10-31 22:12:35 +00001313{
Joe Hershbergercb487f52012-05-23 07:58:06 +00001314 struct ethernet_hdr *et = (struct ethernet_hdr *)xet;
wdenka3d991b2004-04-15 21:48:45 +00001315 ushort myvlanid;
1316
1317 myvlanid = ntohs(NetOurVLAN);
1318 if (myvlanid == (ushort)-1)
1319 myvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +00001320
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001321 memcpy(et->et_dest, dest_ethaddr, 6);
1322 memcpy(et->et_src, net_ethaddr, 6);
wdenka3d991b2004-04-15 21:48:45 +00001323 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
Luca Ceresolic819abe2011-05-04 02:40:46 +00001324 et->et_protlen = htons(prot);
wdenka3d991b2004-04-15 21:48:45 +00001325 return ETHER_HDR_SIZE;
1326 } else {
Joe Hershbergerc68cca32012-05-23 07:58:07 +00001327 struct vlan_ethernet_hdr *vet =
1328 (struct vlan_ethernet_hdr *)xet;
wdenk2d966952002-10-31 22:12:35 +00001329
wdenka3d991b2004-04-15 21:48:45 +00001330 vet->vet_vlan_type = htons(PROT_VLAN);
1331 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1332 vet->vet_type = htons(prot);
1333 return VLAN_ETHER_HDR_SIZE;
1334 }
1335}
wdenk2d966952002-10-31 22:12:35 +00001336
Joe Hershbergere7111012012-05-23 07:59:16 +00001337int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot)
1338{
1339 ushort protlen;
1340
1341 memcpy(et->et_dest, addr, 6);
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001342 memcpy(et->et_src, net_ethaddr, 6);
Joe Hershbergere7111012012-05-23 07:59:16 +00001343 protlen = ntohs(et->et_protlen);
1344 if (protlen == PROT_VLAN) {
1345 struct vlan_ethernet_hdr *vet =
1346 (struct vlan_ethernet_hdr *)et;
1347 vet->vet_type = htons(prot);
1348 return VLAN_ETHER_HDR_SIZE;
1349 } else if (protlen > 1514) {
1350 et->et_protlen = htons(prot);
1351 return ETHER_HDR_SIZE;
1352 } else {
1353 /* 802.2 + SNAP */
1354 struct e802_hdr *et802 = (struct e802_hdr *)et;
1355 et802->et_prot = htons(prot);
1356 return E802_HDR_SIZE;
1357 }
1358}
1359
Joe Hershberger049a95a2015-04-08 01:41:01 -05001360void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source)
wdenk2d966952002-10-31 22:12:35 +00001361{
Joe Hershberger4b11c912012-05-23 07:59:07 +00001362 struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
1363
1364 /*
1365 * Construct an IP header.
1366 */
1367 /* IP_HDR_SIZE / 4 (not including UDP) */
1368 ip->ip_hl_v = 0x45;
1369 ip->ip_tos = 0;
1370 ip->ip_len = htons(IP_HDR_SIZE);
1371 ip->ip_id = htons(NetIPID++);
1372 ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
1373 ip->ip_ttl = 255;
1374 ip->ip_sum = 0;
1375 /* already in network byte order */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001376 net_copy_ip((void *)&ip->ip_src, &source);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001377 /* already in network byte order */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001378 net_copy_ip((void *)&ip->ip_dst, &dest);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001379}
1380
Joe Hershberger049a95a2015-04-08 01:41:01 -05001381void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport,
Joe Hershberger4b11c912012-05-23 07:59:07 +00001382 int len)
1383{
1384 struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
wdenk2d966952002-10-31 22:12:35 +00001385
1386 /*
1387 * If the data is an odd number of bytes, zero the
1388 * byte after the last byte so that the checksum
1389 * will work.
1390 */
1391 if (len & 1)
Joe Hershberger4b11c912012-05-23 07:59:07 +00001392 pkt[IP_UDP_HDR_SIZE + len] = 0;
wdenk2d966952002-10-31 22:12:35 +00001393
Joe Hershberger049a95a2015-04-08 01:41:01 -05001394 net_set_ip_header(pkt, dest, net_ip);
Joe Hershberger594c26f2012-05-23 07:58:04 +00001395 ip->ip_len = htons(IP_UDP_HDR_SIZE + len);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001396 ip->ip_p = IPPROTO_UDP;
Simon Glass0da0fcd2015-01-19 22:16:08 -07001397 ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001398
wdenk2d966952002-10-31 22:12:35 +00001399 ip->udp_src = htons(sport);
1400 ip->udp_dst = htons(dport);
Joe Hershberger594c26f2012-05-23 07:58:04 +00001401 ip->udp_len = htons(UDP_HDR_SIZE + len);
wdenk2d966952002-10-31 22:12:35 +00001402 ip->udp_xsum = 0;
wdenk2d966952002-10-31 22:12:35 +00001403}
1404
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001405void copy_filename(char *dst, const char *src, int size)
wdenk2d966952002-10-31 22:12:35 +00001406{
1407 if (*src && (*src == '"')) {
1408 ++src;
1409 --size;
1410 }
1411
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001412 while ((--size > 0) && *src && (*src != '"'))
wdenk2d966952002-10-31 22:12:35 +00001413 *dst++ = *src++;
wdenk2d966952002-10-31 22:12:35 +00001414 *dst = '\0';
1415}
1416
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001417#if defined(CONFIG_CMD_NFS) || \
1418 defined(CONFIG_CMD_SNTP) || \
1419 defined(CONFIG_CMD_DNS)
Robin Getz1a32bf42009-07-20 14:53:54 -04001420/*
Robin Getz97399462010-03-08 14:07:00 -05001421 * make port a little random (1024-17407)
1422 * This keeps the math somewhat trivial to compute, and seems to work with
1423 * all supported protocols/clients/servers
Robin Getz1a32bf42009-07-20 14:53:54 -04001424 */
1425unsigned int random_port(void)
1426{
Robin Getz97399462010-03-08 14:07:00 -05001427 return 1024 + (get_timer(0) % 0x4000);
Robin Getz1a32bf42009-07-20 14:53:54 -04001428}
1429#endif
1430
Joe Hershberger049a95a2015-04-08 01:41:01 -05001431void ip_to_string(struct in_addr x, char *s)
wdenk2d966952002-10-31 22:12:35 +00001432{
Joe Hershberger049a95a2015-04-08 01:41:01 -05001433 x.s_addr = ntohl(x.s_addr);
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001434 sprintf(s, "%d.%d.%d.%d",
Joe Hershberger049a95a2015-04-08 01:41:01 -05001435 (int) ((x.s_addr >> 24) & 0xff),
1436 (int) ((x.s_addr >> 16) & 0xff),
1437 (int) ((x.s_addr >> 8) & 0xff),
1438 (int) ((x.s_addr >> 0) & 0xff)
wdenk6e592382004-04-18 17:39:38 +00001439 );
wdenk2d966952002-10-31 22:12:35 +00001440}
1441
wdenka3d991b2004-04-15 21:48:45 +00001442void VLAN_to_string(ushort x, char *s)
1443{
1444 x = ntohs(x);
1445
1446 if (x == (ushort)-1)
1447 x = VLAN_NONE;
1448
1449 if (x == VLAN_NONE)
1450 strcpy(s, "none");
1451 else
1452 sprintf(s, "%d", x & VLAN_IDMASK);
1453}
1454
Mike Frysinger2e3ef6e2010-10-20 07:16:48 -04001455ushort string_to_VLAN(const char *s)
wdenka3d991b2004-04-15 21:48:45 +00001456{
1457 ushort id;
1458
1459 if (s == NULL)
wdenkb9711de2004-04-25 13:18:40 +00001460 return htons(VLAN_NONE);
wdenka3d991b2004-04-15 21:48:45 +00001461
1462 if (*s < '0' || *s > '9')
1463 id = VLAN_NONE;
1464 else
1465 id = (ushort)simple_strtoul(s, NULL, 10);
1466
wdenkb9711de2004-04-25 13:18:40 +00001467 return htons(id);
wdenka3d991b2004-04-15 21:48:45 +00001468}
1469
wdenka3d991b2004-04-15 21:48:45 +00001470ushort getenv_VLAN(char *var)
1471{
Luca Ceresoli92895de2011-05-04 02:40:45 +00001472 return string_to_VLAN(getenv(var));
wdenka3d991b2004-04-15 21:48:45 +00001473}