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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>
Lukasz Majewski34696952015-08-24 00:21:43 +020089#include <net/tftp.h>
Joe Hershberger4545f4e2012-05-23 07:58:15 +000090#if defined(CONFIG_STATUS_LED)
91#include <miiphy.h>
92#include <status_led.h>
93#endif
94#include <watchdog.h>
95#include <linux/compiler.h>
Joe Hershbergerd280d3f2012-05-23 07:58:01 +000096#include "arp.h"
wdenk2d966952002-10-31 22:12:35 +000097#include "bootp.h"
Joe Hershbergerf575ae12012-05-23 07:57:59 +000098#include "cdp.h"
Robin Getz1a32bf42009-07-20 14:53:54 -040099#if defined(CONFIG_CMD_DNS)
100#include "dns.h"
101#endif
Joe Hershbergerd22c3382012-05-23 08:00:12 +0000102#include "link_local.h"
Joe Hershberger4545f4e2012-05-23 07:58:15 +0000103#include "nfs.h"
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000104#include "ping.h"
Joe Hershberger4545f4e2012-05-23 07:58:15 +0000105#include "rarp.h"
106#if defined(CONFIG_CMD_SNTP)
107#include "sntp.h"
108#endif
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 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500144static unsigned net_ip_id;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000145/* 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 Hershbergerbc0571f2015-04-08 01:41:21 -0500149void (*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 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500154int net_restart_wrap;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000155/* Network loop restarted */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500156static int net_restarted;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000157/* At least one device configured */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500158static int net_dev_exists;
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 */
Joe Hershberger4fd50552015-04-08 01:41:17 -0500162ushort net_our_vlan = 0xFFFF;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000163/* ditto */
Joe Hershberger4fd50552015-04-08 01:41:17 -0500164ushort net_native_vlan = 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 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500177int net_ntp_time_offset;
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 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500192static thand_f *time_handler;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000193/* Time base value */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500194static ulong time_start;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000195/* Current timeout value */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500196static ulong time_delta;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000197/* 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
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500202static int net_try_count;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100203
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{
Joe Hershbergerfd305632015-05-20 14:27:23 -0500211 if (flags & H_PROGRAMMATIC)
212 return 0;
213
Joe Hershbergera9f51c92012-12-11 22:16:26 -0600214 switch (op) {
215 case env_op_create:
216 case env_op_overwrite:
Joe Hershberger14111572015-04-08 01:41:02 -0500217 copy_filename(net_boot_file_name, value,
218 sizeof(net_boot_file_name));
Joe Hershbergera9f51c92012-12-11 22:16:26 -0600219 break;
220 default:
221 break;
222 }
223
224 return 0;
225}
226U_BOOT_ENV_CALLBACK(bootfile, on_bootfile);
227
Joe Hershbergerfd305632015-05-20 14:27:23 -0500228static int on_ipaddr(const char *name, const char *value, enum env_op op,
229 int flags)
230{
231 if (flags & H_PROGRAMMATIC)
232 return 0;
233
234 net_ip = string_to_ip(value);
235
236 return 0;
237}
238U_BOOT_ENV_CALLBACK(ipaddr, on_ipaddr);
239
240static int on_gatewayip(const char *name, const char *value, enum env_op op,
241 int flags)
242{
243 if (flags & H_PROGRAMMATIC)
244 return 0;
245
246 net_gateway = string_to_ip(value);
247
248 return 0;
249}
250U_BOOT_ENV_CALLBACK(gatewayip, on_gatewayip);
251
252static int on_netmask(const char *name, const char *value, enum env_op op,
253 int flags)
254{
255 if (flags & H_PROGRAMMATIC)
256 return 0;
257
258 net_netmask = string_to_ip(value);
259
260 return 0;
261}
262U_BOOT_ENV_CALLBACK(netmask, on_netmask);
263
264static int on_serverip(const char *name, const char *value, enum env_op op,
265 int flags)
266{
267 if (flags & H_PROGRAMMATIC)
268 return 0;
269
270 net_server_ip = string_to_ip(value);
271
272 return 0;
273}
274U_BOOT_ENV_CALLBACK(serverip, on_serverip);
275
276static int on_nvlan(const char *name, const char *value, enum env_op op,
277 int flags)
278{
279 if (flags & H_PROGRAMMATIC)
280 return 0;
281
282 net_native_vlan = string_to_vlan(value);
283
284 return 0;
285}
286U_BOOT_ENV_CALLBACK(nvlan, on_nvlan);
287
288static int on_vlan(const char *name, const char *value, enum env_op op,
289 int flags)
290{
291 if (flags & H_PROGRAMMATIC)
292 return 0;
293
294 net_our_vlan = string_to_vlan(value);
295
296 return 0;
297}
298U_BOOT_ENV_CALLBACK(vlan, on_vlan);
299
300#if defined(CONFIG_CMD_DNS)
301static int on_dnsip(const char *name, const char *value, enum env_op op,
302 int flags)
303{
304 if (flags & H_PROGRAMMATIC)
305 return 0;
306
307 net_dns_server = string_to_ip(value);
308
309 return 0;
310}
311U_BOOT_ENV_CALLBACK(dnsip, on_dnsip);
312#endif
313
Simon Glasse4a3d572011-10-27 06:24:32 +0000314/*
315 * Check if autoload is enabled. If so, use either NFS or TFTP to download
316 * the boot file.
317 */
318void net_auto_load(void)
319{
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600320#if defined(CONFIG_CMD_NFS)
Simon Glasse4a3d572011-10-27 06:24:32 +0000321 const char *s = getenv("autoload");
322
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600323 if (s != NULL && strcmp(s, "NFS") == 0) {
324 /*
325 * Use NFS to load the bootfile.
326 */
Joe Hershberger68c76a32015-04-08 01:41:10 -0500327 nfs_start();
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600328 return;
329 }
Simon Glasse4a3d572011-10-27 06:24:32 +0000330#endif
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600331 if (getenv_yesno("autoload") == 0) {
332 /*
333 * Just use BOOTP/RARP to configure system;
334 * Do not use TFTP to load the bootfile.
335 */
336 net_set_state(NETLOOP_SUCCESS);
337 return;
Simon Glasse4a3d572011-10-27 06:24:32 +0000338 }
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500339 tftp_start(TFTPGET);
Simon Glasse4a3d572011-10-27 06:24:32 +0000340}
341
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500342static void net_init_loop(void)
Heiko Schocher2f70c492009-02-10 09:38:52 +0100343{
Jim Lin7315cfd2013-05-17 17:41:03 +0800344 if (eth_get_dev())
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500345 memcpy(net_ethaddr, eth_get_ethaddr(), 6);
Michael Zaidman3c172c42009-04-04 01:43:00 +0300346
Heiko Schocherda954272009-04-28 08:36:11 +0200347 return;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100348}
349
Joe Hershbergerece223b2012-05-23 07:59:15 +0000350static void net_clear_handlers(void)
351{
352 net_set_udp_handler(NULL);
353 net_set_arp_handler(NULL);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500354 net_set_timeout_handler(0, NULL);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000355}
356
357static void net_cleanup_loop(void)
358{
359 net_clear_handlers();
360}
361
Joe Hershberger46c495d2012-05-23 07:59:22 +0000362void net_init(void)
363{
364 static int first_call = 1;
365
366 if (first_call) {
367 /*
368 * Setup packet buffers, aligned correctly.
369 */
370 int i;
371
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500372 net_tx_packet = &net_pkt_buf[0] + (PKTALIGN - 1);
373 net_tx_packet -= (ulong)net_tx_packet % PKTALIGN;
Joe Hershberger2a504df2015-03-22 17:09:11 -0500374 for (i = 0; i < PKTBUFSRX; i++) {
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500375 net_rx_packets[i] = net_tx_packet +
376 (i + 1) * PKTSIZE_ALIGN;
Joe Hershberger2a504df2015-03-22 17:09:11 -0500377 }
Joe Hershberger85d25e02015-04-08 01:41:08 -0500378 arp_init();
Joe Hershberger46c495d2012-05-23 07:59:22 +0000379 net_clear_handlers();
380
381 /* Only need to setup buffer pointers once. */
382 first_call = 0;
383 }
384
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500385 net_init_loop();
Joe Hershberger46c495d2012-05-23 07:59:22 +0000386}
387
wdenk73a8b272003-06-05 19:27:42 +0000388/**********************************************************************/
wdenk2d966952002-10-31 22:12:35 +0000389/*
390 * Main network processing loop.
391 */
392
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500393int net_loop(enum proto_t protocol)
wdenk2d966952002-10-31 22:12:35 +0000394{
Joe Hershberger60304592015-03-22 17:09:24 -0500395 int ret = -EINVAL;
wdenk2d966952002-10-31 22:12:35 +0000396
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500397 net_restarted = 0;
398 net_dev_exists = 0;
399 net_try_count = 1;
400 debug_cond(DEBUG_INT_STATE, "--- net_loop Entry\n");
wdenk73a8b272003-06-05 19:27:42 +0000401
Simon Glass573f14f2011-12-10 11:08:06 +0000402 bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start");
Joe Hershberger46c495d2012-05-23 07:59:22 +0000403 net_init();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000404 if (eth_is_on_demand_init() || protocol != NETCONS) {
wdenkb1bf6f22005-04-03 14:52:59 +0000405 eth_halt();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000406 eth_set_current();
Joe Hershberger60304592015-03-22 17:09:24 -0500407 ret = eth_init();
408 if (ret < 0) {
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000409 eth_halt();
Joe Hershberger60304592015-03-22 17:09:24 -0500410 return ret;
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000411 }
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500412 } else {
Joe Hershbergerd2eaec62015-03-22 17:09:06 -0500413 eth_init_state_only();
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500414 }
wdenk2d966952002-10-31 22:12:35 +0000415restart:
Jim Linb63056d2013-08-13 19:03:05 +0800416#ifdef CONFIG_USB_KEYBOARD
417 net_busy_flag = 0;
418#endif
Joe Hershberger22f6e992012-05-23 07:59:14 +0000419 net_set_state(NETLOOP_CONTINUE);
wdenk2d966952002-10-31 22:12:35 +0000420
421 /*
422 * Start the ball rolling with the given start function. From
423 * here on, this code is a state machine driven by received
424 * packets and timer events.
425 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500426 debug_cond(DEBUG_INT_STATE, "--- net_loop Init\n");
427 net_init_loop();
wdenk2d966952002-10-31 22:12:35 +0000428
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000429 switch (net_check_prereq(protocol)) {
wdenk2d966952002-10-31 22:12:35 +0000430 case 1:
431 /* network not configured */
wdenkb1bf6f22005-04-03 14:52:59 +0000432 eth_halt();
Joe Hershberger60304592015-03-22 17:09:24 -0500433 return -ENODEV;
wdenk2d966952002-10-31 22:12:35 +0000434
wdenk2d966952002-10-31 22:12:35 +0000435 case 2:
436 /* network device not configured */
437 break;
wdenk2d966952002-10-31 22:12:35 +0000438
439 case 0:
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500440 net_dev_exists = 1;
Joe Hershberger14111572015-04-08 01:41:02 -0500441 net_boot_file_size = 0;
wdenk2d966952002-10-31 22:12:35 +0000442 switch (protocol) {
Simon Glasse4bf0c52011-10-24 18:00:02 +0000443 case TFTPGET:
Simon Glass1fb7cd42011-10-24 18:00:07 +0000444#ifdef CONFIG_CMD_TFTPPUT
445 case TFTPPUT:
446#endif
wdenk2d966952002-10-31 22:12:35 +0000447 /* always use ARP to get server ethernet address */
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500448 tftp_start(protocol);
wdenk2d966952002-10-31 22:12:35 +0000449 break;
Luca Ceresoli7a83af02011-05-17 00:03:40 +0000450#ifdef CONFIG_CMD_TFTPSRV
451 case TFTPSRV:
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500452 tftp_start_server();
Luca Ceresoli7a83af02011-05-17 00:03:40 +0000453 break;
454#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500455#if defined(CONFIG_CMD_DHCP)
wdenk2d966952002-10-31 22:12:35 +0000456 case DHCP:
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500457 bootp_reset();
Joe Hershberger049a95a2015-04-08 01:41:01 -0500458 net_ip.s_addr = 0;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500459 dhcp_request(); /* Basically same as BOOTP */
wdenk2d966952002-10-31 22:12:35 +0000460 break;
Jon Loeliger610f2e92007-07-10 11:05:02 -0500461#endif
wdenk2d966952002-10-31 22:12:35 +0000462
463 case BOOTP:
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500464 bootp_reset();
Joe Hershberger049a95a2015-04-08 01:41:01 -0500465 net_ip.s_addr = 0;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500466 bootp_request();
wdenk2d966952002-10-31 22:12:35 +0000467 break;
468
Peter Tyserbf6cb242010-09-30 11:25:48 -0500469#if defined(CONFIG_CMD_RARP)
wdenk2d966952002-10-31 22:12:35 +0000470 case RARP:
Joe Hershberger698d78e2015-04-08 01:41:11 -0500471 rarp_try = 0;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500472 net_ip.s_addr = 0;
Joe Hershberger698d78e2015-04-08 01:41:11 -0500473 rarp_request();
wdenk2d966952002-10-31 22:12:35 +0000474 break;
Peter Tyserbf6cb242010-09-30 11:25:48 -0500475#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500476#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +0000477 case PING:
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000478 ping_start();
wdenk73a8b272003-06-05 19:27:42 +0000479 break;
480#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500481#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +0000482 case NFS:
Joe Hershberger68c76a32015-04-08 01:41:10 -0500483 nfs_start();
wdenkcbd8a352004-02-24 02:00:03 +0000484 break;
485#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500486#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000487 case CDP:
Joe Hershberger6aede5b2015-04-08 01:41:14 -0500488 cdp_start();
wdenka3d991b2004-04-15 21:48:45 +0000489 break;
490#endif
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500491#if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
wdenk68ceb292004-08-02 21:11:11 +0000492 case NETCONS:
Joe Hershberger6a38a5f2015-04-08 01:41:16 -0500493 nc_start();
wdenk68ceb292004-08-02 21:11:11 +0000494 break;
495#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500496#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +0000497 case SNTP:
Joe Hershberger38ba2552015-04-08 01:41:12 -0500498 sntp_start();
wdenkea287de2005-04-01 00:25:43 +0000499 break;
500#endif
Robin Getz1a32bf42009-07-20 14:53:54 -0400501#if defined(CONFIG_CMD_DNS)
502 case DNS:
Joe Hershberger786eac52015-04-08 01:41:15 -0500503 dns_start();
Robin Getz1a32bf42009-07-20 14:53:54 -0400504 break;
505#endif
Joe Hershbergerd22c3382012-05-23 08:00:12 +0000506#if defined(CONFIG_CMD_LINK_LOCAL)
507 case LINKLOCAL:
508 link_local_start();
509 break;
510#endif
wdenk2d966952002-10-31 22:12:35 +0000511 default:
512 break;
513 }
514
wdenk2d966952002-10-31 22:12:35 +0000515 break;
516 }
517
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500518#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000519#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
520 defined(CONFIG_STATUS_LED) && \
521 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000522 /*
wdenk42d1f032003-10-15 23:53:47 +0000523 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000524 */
Luca Ceresolid3c65b02011-05-04 02:40:43 +0000525 if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR))
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000526 status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
Luca Ceresolid3c65b02011-05-04 02:40:43 +0000527 else
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000528 status_led_set(STATUS_LED_RED, STATUS_LED_ON);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200529#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000530#endif /* CONFIG_MII, ... */
Jim Linb63056d2013-08-13 19:03:05 +0800531#ifdef CONFIG_USB_KEYBOARD
532 net_busy_flag = 1;
533#endif
wdenk2d966952002-10-31 22:12:35 +0000534
535 /*
536 * Main packet reception loop. Loop receiving packets until
Joe Hershberger22f6e992012-05-23 07:59:14 +0000537 * someone sets `net_state' to a state that terminates.
wdenk2d966952002-10-31 22:12:35 +0000538 */
539 for (;;) {
540 WATCHDOG_RESET();
541#ifdef CONFIG_SHOW_ACTIVITY
Joe Hershberger48522bb2012-05-15 08:59:08 +0000542 show_activity(1);
wdenk2d966952002-10-31 22:12:35 +0000543#endif
544 /*
545 * Check the ethernet for a new packet. The ethernet
546 * receive routine will process it.
Joe Hershberger60304592015-03-22 17:09:24 -0500547 * Most drivers return the most recent packet size, but not
548 * errors that may have happened.
wdenk2d966952002-10-31 22:12:35 +0000549 */
Guennadi Liakhovetski40cb90e2008-04-03 17:04:19 +0200550 eth_rx();
wdenk2d966952002-10-31 22:12:35 +0000551
552 /*
553 * Abort if ctrl-c was pressed.
554 */
555 if (ctrlc()) {
Joe Hershbergere94070c2012-05-23 07:59:24 +0000556 /* cancel any ARP that may not have completed */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500557 net_arp_wait_packet_ip.s_addr = 0;
Joe Hershbergere94070c2012-05-23 07:59:24 +0000558
Joe Hershbergerece223b2012-05-23 07:59:15 +0000559 net_cleanup_loop();
wdenk8bde7f72003-06-27 21:31:46 +0000560 eth_halt();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000561 /* Invalidate the last protocol */
562 eth_set_last_protocol(BOOTP);
563
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000564 puts("\nAbort\n");
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000565 /* include a debug print as well incase the debug
566 messages are directed to stderr */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500567 debug_cond(DEBUG_INT_STATE, "--- net_loop Abort!\n");
Michal Simek19a4fba2015-08-21 08:49:48 +0200568 ret = -EINTR;
Simon Glass4793ee62011-10-24 18:00:01 +0000569 goto done;
wdenk2d966952002-10-31 22:12:35 +0000570 }
571
Joe Hershberger85d25e02015-04-08 01:41:08 -0500572 arp_timeout_check();
wdenk2d966952002-10-31 22:12:35 +0000573
574 /*
575 * Check for a timeout, and run the timeout handler
576 * if we have one.
577 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500578 if (time_handler &&
579 ((get_timer(0) - time_start) > time_delta)) {
wdenk2d966952002-10-31 22:12:35 +0000580 thand_f *x;
581
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500582#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000583#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
584 defined(CONFIG_STATUS_LED) && \
585 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000586 /*
wdenk42d1f032003-10-15 23:53:47 +0000587 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000588 */
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000589 if (miiphy_link(eth_get_dev()->name,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500590 CONFIG_SYS_FAULT_MII_ADDR))
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000591 status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500592 else
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000593 status_led_set(STATUS_LED_RED, STATUS_LED_ON);
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000594#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000595#endif /* CONFIG_MII, ... */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500596 debug_cond(DEBUG_INT_STATE, "--- net_loop timeout\n");
597 x = time_handler;
598 time_handler = (thand_f *)0;
wdenk2d966952002-10-31 22:12:35 +0000599 (*x)();
600 }
601
Joe Hershberger5c421332015-03-22 17:09:07 -0500602 if (net_state == NETLOOP_FAIL)
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500603 ret = net_start_again();
wdenk2d966952002-10-31 22:12:35 +0000604
Joe Hershberger22f6e992012-05-23 07:59:14 +0000605 switch (net_state) {
wdenk2d966952002-10-31 22:12:35 +0000606 case NETLOOP_RESTART:
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500607 net_restarted = 1;
wdenk2d966952002-10-31 22:12:35 +0000608 goto restart;
609
610 case NETLOOP_SUCCESS:
Joe Hershbergerece223b2012-05-23 07:59:15 +0000611 net_cleanup_loop();
Joe Hershberger14111572015-04-08 01:41:02 -0500612 if (net_boot_file_size > 0) {
613 printf("Bytes transferred = %d (%x hex)\n",
614 net_boot_file_size, net_boot_file_size);
615 setenv_hex("filesize", net_boot_file_size);
Simon Glass978226d2013-02-24 17:33:24 +0000616 setenv_hex("fileaddr", load_addr);
wdenk2d966952002-10-31 22:12:35 +0000617 }
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000618 if (protocol != NETCONS)
619 eth_halt();
620 else
621 eth_halt_state_only();
622
623 eth_set_last_protocol(protocol);
624
Joe Hershberger14111572015-04-08 01:41:02 -0500625 ret = net_boot_file_size;
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500626 debug_cond(DEBUG_INT_STATE, "--- net_loop Success!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000627 goto done;
wdenk2d966952002-10-31 22:12:35 +0000628
629 case NETLOOP_FAIL:
Joe Hershbergerece223b2012-05-23 07:59:15 +0000630 net_cleanup_loop();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000631 /* Invalidate the last protocol */
632 eth_set_last_protocol(BOOTP);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500633 debug_cond(DEBUG_INT_STATE, "--- net_loop Fail!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000634 goto done;
Joe Hershberger22f6e992012-05-23 07:59:14 +0000635
636 case NETLOOP_CONTINUE:
637 continue;
wdenk2d966952002-10-31 22:12:35 +0000638 }
639 }
Simon Glass4793ee62011-10-24 18:00:01 +0000640
641done:
Jim Linb63056d2013-08-13 19:03:05 +0800642#ifdef CONFIG_USB_KEYBOARD
643 net_busy_flag = 0;
644#endif
Simon Glass39bccd22011-10-26 14:18:38 +0000645#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000646 /* Clear out the handlers */
Joe Hershbergerece223b2012-05-23 07:59:15 +0000647 net_set_udp_handler(NULL);
Simon Glass4793ee62011-10-24 18:00:01 +0000648 net_set_icmp_handler(NULL);
Simon Glass39bccd22011-10-26 14:18:38 +0000649#endif
Simon Glass4793ee62011-10-24 18:00:01 +0000650 return ret;
wdenk2d966952002-10-31 22:12:35 +0000651}
652
653/**********************************************************************/
654
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500655static void start_again_timeout_handler(void)
wdenk2d966952002-10-31 22:12:35 +0000656{
Joe Hershberger22f6e992012-05-23 07:59:14 +0000657 net_set_state(NETLOOP_RESTART);
wdenk2d966952002-10-31 22:12:35 +0000658}
659
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500660int net_start_again(void)
wdenk2d966952002-10-31 22:12:35 +0000661{
wdenk6e592382004-04-18 17:39:38 +0000662 char *nretry;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100663 int retry_forever = 0;
664 unsigned long retrycnt = 0;
Joe Hershberger60304592015-03-22 17:09:24 -0500665 int ret;
wdenka3d991b2004-04-15 21:48:45 +0000666
Remy Bohmer67b96e82009-10-28 22:13:39 +0100667 nretry = getenv("netretry");
668 if (nretry) {
669 if (!strcmp(nretry, "yes"))
670 retry_forever = 1;
671 else if (!strcmp(nretry, "no"))
672 retrycnt = 0;
673 else if (!strcmp(nretry, "once"))
674 retrycnt = 1;
675 else
676 retrycnt = simple_strtoul(nretry, NULL, 0);
Joe Hershberger5c421332015-03-22 17:09:07 -0500677 } else {
678 retrycnt = 0;
679 retry_forever = 0;
680 }
Remy Bohmer67b96e82009-10-28 22:13:39 +0100681
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500682 if ((!retry_forever) && (net_try_count >= retrycnt)) {
Remy Bohmer67b96e82009-10-28 22:13:39 +0100683 eth_halt();
Joe Hershberger22f6e992012-05-23 07:59:14 +0000684 net_set_state(NETLOOP_FAIL);
Joe Hershberger60304592015-03-22 17:09:24 -0500685 /*
686 * We don't provide a way for the protocol to return an error,
687 * but this is almost always the reason.
688 */
689 return -ETIMEDOUT;
wdenka3d991b2004-04-15 21:48:45 +0000690 }
Remy Bohmer67b96e82009-10-28 22:13:39 +0100691
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500692 net_try_count++;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100693
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000694 eth_halt();
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100695#if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500696 eth_try_another(!net_restarted);
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100697#endif
Joe Hershberger60304592015-03-22 17:09:24 -0500698 ret = eth_init();
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500699 if (net_restart_wrap) {
700 net_restart_wrap = 0;
701 if (net_dev_exists) {
702 net_set_timeout_handler(10000UL,
703 start_again_timeout_handler);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000704 net_set_udp_handler(NULL);
wdenk6e592382004-04-18 17:39:38 +0000705 } else {
Joe Hershberger22f6e992012-05-23 07:59:14 +0000706 net_set_state(NETLOOP_FAIL);
wdenk2d966952002-10-31 22:12:35 +0000707 }
wdenk6e592382004-04-18 17:39:38 +0000708 } else {
Joe Hershberger22f6e992012-05-23 07:59:14 +0000709 net_set_state(NETLOOP_RESTART);
wdenk2d966952002-10-31 22:12:35 +0000710 }
Joe Hershberger60304592015-03-22 17:09:24 -0500711 return ret;
wdenk2d966952002-10-31 22:12:35 +0000712}
713
714/**********************************************************************/
715/*
716 * Miscelaneous bits.
717 */
718
Joe Hershbergerece223b2012-05-23 07:59:15 +0000719static void dummy_handler(uchar *pkt, unsigned dport,
Joe Hershberger049a95a2015-04-08 01:41:01 -0500720 struct in_addr sip, unsigned sport,
Joe Hershbergerece223b2012-05-23 07:59:15 +0000721 unsigned len)
Joe Hershbergerd280d3f2012-05-23 07:58:01 +0000722{
Joe Hershbergerd280d3f2012-05-23 07:58:01 +0000723}
724
Joe Hershbergerece223b2012-05-23 07:59:15 +0000725rxhand_f *net_get_udp_handler(void)
wdenk2d966952002-10-31 22:12:35 +0000726{
Joe Hershbergerece223b2012-05-23 07:59:15 +0000727 return udp_packet_handler;
728}
729
730void net_set_udp_handler(rxhand_f *f)
731{
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500732 debug_cond(DEBUG_INT_STATE, "--- net_loop UDP handler set (%p)\n", f);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000733 if (f == NULL)
734 udp_packet_handler = dummy_handler;
735 else
736 udp_packet_handler = f;
737}
738
739rxhand_f *net_get_arp_handler(void)
740{
741 return arp_packet_handler;
742}
743
744void net_set_arp_handler(rxhand_f *f)
745{
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500746 debug_cond(DEBUG_INT_STATE, "--- net_loop ARP handler set (%p)\n", f);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000747 if (f == NULL)
748 arp_packet_handler = dummy_handler;
749 else
750 arp_packet_handler = f;
wdenk2d966952002-10-31 22:12:35 +0000751}
752
Simon Glass39bccd22011-10-26 14:18:38 +0000753#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000754void net_set_icmp_handler(rxhand_icmp_f *f)
755{
756 packet_icmp_handler = f;
757}
Simon Glass39bccd22011-10-26 14:18:38 +0000758#endif
wdenk2d966952002-10-31 22:12:35 +0000759
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500760void net_set_timeout_handler(ulong iv, thand_f *f)
wdenk2d966952002-10-31 22:12:35 +0000761{
762 if (iv == 0) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000763 debug_cond(DEBUG_INT_STATE,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500764 "--- net_loop timeout handler cancelled\n");
765 time_handler = (thand_f *)0;
wdenk2d966952002-10-31 22:12:35 +0000766 } else {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000767 debug_cond(DEBUG_INT_STATE,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500768 "--- net_loop timeout handler set (%p)\n", f);
769 time_handler = f;
770 time_start = get_timer(0);
771 time_delta = iv * CONFIG_SYS_HZ / 1000;
wdenk2d966952002-10-31 22:12:35 +0000772 }
773}
774
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500775int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport,
Joe Hershberger206d07f2012-05-23 07:58:10 +0000776 int payload_len)
wdenk73a8b272003-06-05 19:27:42 +0000777{
wdenka3d991b2004-04-15 21:48:45 +0000778 uchar *pkt;
Joe Hershberger92146372012-05-23 07:59:08 +0000779 int eth_hdr_size;
780 int pkt_hdr_size;
wdenka3d991b2004-04-15 21:48:45 +0000781
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500782 /* make sure the net_tx_packet is initialized (net_init() was called) */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500783 assert(net_tx_packet != NULL);
784 if (net_tx_packet == NULL)
Joe Hershberger46c495d2012-05-23 07:59:22 +0000785 return -1;
786
wdenk73a8b272003-06-05 19:27:42 +0000787 /* convert to new style broadcast */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500788 if (dest.s_addr == 0)
789 dest.s_addr = 0xFFFFFFFF;
wdenk2d966952002-10-31 22:12:35 +0000790
wdenk73a8b272003-06-05 19:27:42 +0000791 /* if broadcast, make the ether address a broadcast and don't do ARP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500792 if (dest.s_addr == 0xFFFFFFFF)
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500793 ether = (uchar *)net_bcast_ethaddr;
wdenk73a8b272003-06-05 19:27:42 +0000794
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500795 pkt = (uchar *)net_tx_packet;
wdenk73a8b272003-06-05 19:27:42 +0000796
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500797 eth_hdr_size = net_set_ether(pkt, ether, PROT_IP);
Joe Hershberger92146372012-05-23 07:59:08 +0000798 pkt += eth_hdr_size;
799 net_set_udp_header(pkt, dest, dport, sport, payload_len);
800 pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE;
Robin Getz0ebf04c2009-07-23 03:01:03 -0400801
Joe Hershbergere94070c2012-05-23 07:59:24 +0000802 /* if MAC address was not discovered yet, do an ARP request */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500803 if (memcmp(ether, net_null_ethaddr, 6) == 0) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000804 debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest);
Joe Hershberger92146372012-05-23 07:59:08 +0000805
806 /* save the ip and eth addr for the packet to send after arp */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500807 net_arp_wait_packet_ip = dest;
Joe Hershberger85d25e02015-04-08 01:41:08 -0500808 arp_wait_packet_ethaddr = ether;
wdenka3d991b2004-04-15 21:48:45 +0000809
wdenk73a8b272003-06-05 19:27:42 +0000810 /* size of the waiting packet */
Joe Hershberger85d25e02015-04-08 01:41:08 -0500811 arp_wait_tx_packet_size = pkt_hdr_size + payload_len;
wdenk73a8b272003-06-05 19:27:42 +0000812
813 /* and do the ARP request */
Joe Hershberger85d25e02015-04-08 01:41:08 -0500814 arp_wait_try = 1;
815 arp_wait_timer_start = get_timer(0);
816 arp_request();
wdenk73a8b272003-06-05 19:27:42 +0000817 return 1; /* waiting */
Joe Hershberger92146372012-05-23 07:59:08 +0000818 } else {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000819 debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500820 &dest, ether);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500821 net_send_packet(net_tx_packet, pkt_hdr_size + payload_len);
Joe Hershberger92146372012-05-23 07:59:08 +0000822 return 0; /* transmitted */
wdenk73a8b272003-06-05 19:27:42 +0000823 }
wdenk73a8b272003-06-05 19:27:42 +0000824}
825
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200826#ifdef CONFIG_IP_DEFRAG
827/*
828 * This function collects fragments in a single packet, according
829 * to the algorithm in RFC815. It returns NULL or the pointer to
830 * a complete packet, in static storage
831 */
832#ifndef CONFIG_NET_MAXDEFRAG
833#define CONFIG_NET_MAXDEFRAG 16384
834#endif
835/*
836 * MAXDEFRAG, above, is chosen in the config file and is real data
837 * so we need to add the NFS overhead, which is more than TFTP.
838 * To use sizeof in the internal unnamed structures, we need a real
839 * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately).
840 * The compiler doesn't complain nor allocates the actual structure
841 */
842static struct rpc_t rpc_specimen;
843#define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply))
844
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000845#define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200846
847/*
848 * this is the packet being assembled, either data or frag control.
849 * Fragments go by 8 bytes, so this union must be 8 bytes long
850 */
851struct hole {
852 /* first_byte is address of this structure */
853 u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */
854 u16 next_hole; /* index of next (in 8-b blocks), 0 == none */
855 u16 prev_hole; /* index of prev, 0 == none */
856 u16 unused;
857};
858
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500859static struct ip_udp_hdr *__net_defragment(struct ip_udp_hdr *ip, int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200860{
Joe Hershberger48522bb2012-05-15 08:59:08 +0000861 static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200862 static u16 first_hole, total_len;
863 struct hole *payload, *thisfrag, *h, *newh;
Joe Hershberger594c26f2012-05-23 07:58:04 +0000864 struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200865 uchar *indata = (uchar *)ip;
866 int offset8, start, len, done = 0;
867 u16 ip_off = ntohs(ip->ip_off);
868
869 /* payload starts after IP header, this fragment is in there */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000870 payload = (struct hole *)(pkt_buff + IP_HDR_SIZE);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200871 offset8 = (ip_off & IP_OFFS);
872 thisfrag = payload + offset8;
873 start = offset8 * 8;
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000874 len = ntohs(ip->ip_len) - IP_HDR_SIZE;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200875
876 if (start + len > IP_MAXUDP) /* fragment extends too far */
877 return NULL;
878
879 if (!total_len || localip->ip_id != ip->ip_id) {
880 /* new (or different) packet, reset structs */
881 total_len = 0xffff;
882 payload[0].last_byte = ~0;
883 payload[0].next_hole = 0;
884 payload[0].prev_hole = 0;
885 first_hole = 0;
886 /* any IP header will work, copy the first we received */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000887 memcpy(localip, ip, IP_HDR_SIZE);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200888 }
889
890 /*
891 * What follows is the reassembly algorithm. We use the payload
892 * array as a linked list of hole descriptors, as each hole starts
893 * at a multiple of 8 bytes. However, last byte can be whatever value,
894 * so it is represented as byte count, not as 8-byte blocks.
895 */
896
897 h = payload + first_hole;
898 while (h->last_byte < start) {
899 if (!h->next_hole) {
900 /* no hole that far away */
901 return NULL;
902 }
903 h = payload + h->next_hole;
904 }
905
Fillod Stephanee397e592010-06-11 19:26:43 +0200906 /* last fragment may be 1..7 bytes, the "+7" forces acceptance */
907 if (offset8 + ((len + 7) / 8) <= h - payload) {
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200908 /* no overlap with holes (dup fragment?) */
909 return NULL;
910 }
911
912 if (!(ip_off & IP_FLAGS_MFRAG)) {
913 /* no more fragmentss: truncate this (last) hole */
914 total_len = start + len;
915 h->last_byte = start + len;
916 }
917
918 /*
919 * There is some overlap: fix the hole list. This code doesn't
920 * deal with a fragment that overlaps with two different holes
921 * (thus being a superset of a previously-received fragment).
922 */
923
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000924 if ((h >= thisfrag) && (h->last_byte <= start + len)) {
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200925 /* complete overlap with hole: remove hole */
926 if (!h->prev_hole && !h->next_hole) {
927 /* last remaining hole */
928 done = 1;
929 } else if (!h->prev_hole) {
930 /* first hole */
931 first_hole = h->next_hole;
932 payload[h->next_hole].prev_hole = 0;
933 } else if (!h->next_hole) {
934 /* last hole */
935 payload[h->prev_hole].next_hole = 0;
936 } else {
937 /* in the middle of the list */
938 payload[h->next_hole].prev_hole = h->prev_hole;
939 payload[h->prev_hole].next_hole = h->next_hole;
940 }
941
942 } else if (h->last_byte <= start + len) {
943 /* overlaps with final part of the hole: shorten this hole */
944 h->last_byte = start;
945
946 } else if (h >= thisfrag) {
947 /* overlaps with initial part of the hole: move this hole */
948 newh = thisfrag + (len / 8);
949 *newh = *h;
950 h = newh;
951 if (h->next_hole)
952 payload[h->next_hole].prev_hole = (h - payload);
953 if (h->prev_hole)
954 payload[h->prev_hole].next_hole = (h - payload);
955 else
956 first_hole = (h - payload);
957
958 } else {
959 /* fragment sits in the middle: split the hole */
960 newh = thisfrag + (len / 8);
961 *newh = *h;
962 h->last_byte = start;
963 h->next_hole = (newh - payload);
964 newh->prev_hole = (h - payload);
965 if (newh->next_hole)
966 payload[newh->next_hole].prev_hole = (newh - payload);
967 }
968
969 /* finally copy this fragment and possibly return whole packet */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000970 memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200971 if (!done)
972 return NULL;
973
974 localip->ip_len = htons(total_len);
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000975 *lenp = total_len + IP_HDR_SIZE;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200976 return localip;
977}
978
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500979static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip,
980 int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200981{
982 u16 ip_off = ntohs(ip->ip_off);
983 if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
984 return ip; /* not a fragment */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500985 return __net_defragment(ip, lenp);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200986}
987
988#else /* !CONFIG_IP_DEFRAG */
989
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500990static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip,
991 int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200992{
993 u16 ip_off = ntohs(ip->ip_off);
994 if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
995 return ip; /* not a fragment */
996 return NULL;
997}
998#endif
wdenka3d991b2004-04-15 21:48:45 +0000999
Simon Glass8f79bb12011-10-24 18:00:00 +00001000/**
1001 * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently
1002 * drop others.
1003 *
1004 * @parma ip IP packet containing the ICMP
1005 */
Joe Hershberger594c26f2012-05-23 07:58:04 +00001006static void receive_icmp(struct ip_udp_hdr *ip, int len,
Joe Hershberger049a95a2015-04-08 01:41:01 -05001007 struct in_addr src_ip, struct ethernet_hdr *et)
Simon Glass8f79bb12011-10-24 18:00:00 +00001008{
Joe Hershbergere0a63072012-05-23 07:58:09 +00001009 struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src;
Simon Glass8f79bb12011-10-24 18:00:00 +00001010
1011 switch (icmph->type) {
1012 case ICMP_REDIRECT:
1013 if (icmph->code != ICMP_REDIR_HOST)
1014 return;
1015 printf(" ICMP Host Redirect to %pI4 ",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001016 &icmph->un.gateway);
Simon Glass8f79bb12011-10-24 18:00:00 +00001017 break;
Simon Glass8f79bb12011-10-24 18:00:00 +00001018 default:
Joe Hershbergera36b12f2012-05-23 07:58:02 +00001019#if defined(CONFIG_CMD_PING)
1020 ping_receive(et, ip, len);
1021#endif
Simon Glass39bccd22011-10-26 14:18:38 +00001022#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +00001023 if (packet_icmp_handler)
1024 packet_icmp_handler(icmph->type, icmph->code,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001025 ntohs(ip->udp_dst), src_ip,
1026 ntohs(ip->udp_src), icmph->un.data,
1027 ntohs(ip->udp_len));
Simon Glass39bccd22011-10-26 14:18:38 +00001028#endif
Simon Glass8f79bb12011-10-24 18:00:00 +00001029 break;
1030 }
1031}
1032
Joe Hershberger2a504df2015-03-22 17:09:11 -05001033void net_process_received_packet(uchar *in_packet, int len)
wdenk2d966952002-10-31 22:12:35 +00001034{
Joe Hershbergercb487f52012-05-23 07:58:06 +00001035 struct ethernet_hdr *et;
Joe Hershberger594c26f2012-05-23 07:58:04 +00001036 struct ip_udp_hdr *ip;
Joe Hershberger049a95a2015-04-08 01:41:01 -05001037 struct in_addr dst_ip;
1038 struct in_addr src_ip;
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001039 int eth_proto;
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001040#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001041 int iscdp;
1042#endif
1043 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
wdenk2d966952002-10-31 22:12:35 +00001044
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001045 debug_cond(DEBUG_NET_PKT, "packet received\n");
wdenka3d991b2004-04-15 21:48:45 +00001046
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001047 net_rx_packet = in_packet;
1048 net_rx_packet_len = len;
Joe Hershberger2a504df2015-03-22 17:09:11 -05001049 et = (struct ethernet_hdr *)in_packet;
wdenka3d991b2004-04-15 21:48:45 +00001050
1051 /* too small packet? */
1052 if (len < ETHER_HDR_SIZE)
1053 return;
1054
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001055#ifdef CONFIG_API
1056 if (push_packet) {
Joe Hershberger2a504df2015-03-22 17:09:11 -05001057 (*push_packet)(in_packet, len);
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001058 return;
1059 }
1060#endif
1061
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001062#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001063 /* keep track if packet is CDP */
Joe Hershberger17351882012-05-23 07:58:00 +00001064 iscdp = is_cdp_packet(et->et_dest);
wdenka3d991b2004-04-15 21:48:45 +00001065#endif
1066
Joe Hershberger4fd50552015-04-08 01:41:17 -05001067 myvlanid = ntohs(net_our_vlan);
wdenka3d991b2004-04-15 21:48:45 +00001068 if (myvlanid == (ushort)-1)
1069 myvlanid = VLAN_NONE;
Joe Hershberger4fd50552015-04-08 01:41:17 -05001070 mynvlanid = ntohs(net_native_vlan);
wdenka3d991b2004-04-15 21:48:45 +00001071 if (mynvlanid == (ushort)-1)
1072 mynvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +00001073
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001074 eth_proto = ntohs(et->et_protlen);
wdenk2d966952002-10-31 22:12:35 +00001075
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001076 if (eth_proto < 1514) {
Joe Hershbergercb487f52012-05-23 07:58:06 +00001077 struct e802_hdr *et802 = (struct e802_hdr *)et;
wdenk2d966952002-10-31 22:12:35 +00001078 /*
Joe Hershbergerda5ebe22012-05-23 07:58:11 +00001079 * Got a 802.2 packet. Check the other protocol field.
1080 * XXX VLAN over 802.2+SNAP not implemented!
wdenk2d966952002-10-31 22:12:35 +00001081 */
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001082 eth_proto = ntohs(et802->et_prot);
wdenka3d991b2004-04-15 21:48:45 +00001083
Joe Hershberger2a504df2015-03-22 17:09:11 -05001084 ip = (struct ip_udp_hdr *)(in_packet + E802_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001085 len -= E802_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001086
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001087 } else if (eth_proto != PROT_VLAN) { /* normal packet */
Joe Hershberger2a504df2015-03-22 17:09:11 -05001088 ip = (struct ip_udp_hdr *)(in_packet + ETHER_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001089 len -= ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001090
1091 } else { /* VLAN packet */
Joe Hershbergerc68cca32012-05-23 07:58:07 +00001092 struct vlan_ethernet_hdr *vet =
1093 (struct vlan_ethernet_hdr *)et;
wdenka3d991b2004-04-15 21:48:45 +00001094
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001095 debug_cond(DEBUG_NET_PKT, "VLAN packet received\n");
Robin Getz0ebf04c2009-07-23 03:01:03 -04001096
wdenka3d991b2004-04-15 21:48:45 +00001097 /* too small packet? */
1098 if (len < VLAN_ETHER_HDR_SIZE)
1099 return;
1100
1101 /* if no VLAN active */
Joe Hershberger4fd50552015-04-08 01:41:17 -05001102 if ((ntohs(net_our_vlan) & VLAN_IDMASK) == VLAN_NONE
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001103#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001104 && iscdp == 0
1105#endif
1106 )
1107 return;
1108
1109 cti = ntohs(vet->vet_tag);
1110 vlanid = cti & VLAN_IDMASK;
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001111 eth_proto = ntohs(vet->vet_type);
wdenka3d991b2004-04-15 21:48:45 +00001112
Joe Hershberger2a504df2015-03-22 17:09:11 -05001113 ip = (struct ip_udp_hdr *)(in_packet + VLAN_ETHER_HDR_SIZE);
wdenka3d991b2004-04-15 21:48:45 +00001114 len -= VLAN_ETHER_HDR_SIZE;
wdenk2d966952002-10-31 22:12:35 +00001115 }
1116
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001117 debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto);
wdenk2d966952002-10-31 22:12:35 +00001118
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001119#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001120 if (iscdp) {
Joe Hershberger0b4c5ff2012-05-23 07:58:13 +00001121 cdp_receive((uchar *)ip, len);
wdenka3d991b2004-04-15 21:48:45 +00001122 return;
1123 }
1124#endif
1125
1126 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1127 if (vlanid == VLAN_NONE)
1128 vlanid = (mynvlanid & VLAN_IDMASK);
1129 /* not matched? */
1130 if (vlanid != (myvlanid & VLAN_IDMASK))
1131 return;
1132 }
1133
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001134 switch (eth_proto) {
wdenk2d966952002-10-31 22:12:35 +00001135 case PROT_ARP:
Joe Hershberger85d25e02015-04-08 01:41:08 -05001136 arp_receive(et, ip, len);
wdenk289f9322005-01-12 00:15:14 +00001137 break;
wdenk2d966952002-10-31 22:12:35 +00001138
Peter Tyserbf6cb242010-09-30 11:25:48 -05001139#ifdef CONFIG_CMD_RARP
wdenk2d966952002-10-31 22:12:35 +00001140 case PROT_RARP:
Joe Hershberger8b9c5322012-05-23 07:58:03 +00001141 rarp_receive(ip, len);
wdenk2d966952002-10-31 22:12:35 +00001142 break;
Peter Tyserbf6cb242010-09-30 11:25:48 -05001143#endif
wdenk2d966952002-10-31 22:12:35 +00001144 case PROT_IP:
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001145 debug_cond(DEBUG_NET_PKT, "Got IP\n");
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001146 /* Before we start poking the header, make sure it is there */
Joe Hershberger594c26f2012-05-23 07:58:04 +00001147 if (len < IP_UDP_HDR_SIZE) {
1148 debug("len bad %d < %lu\n", len,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001149 (ulong)IP_UDP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001150 return;
1151 }
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001152 /* Check the packet length */
wdenk2d966952002-10-31 22:12:35 +00001153 if (len < ntohs(ip->ip_len)) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001154 debug("len bad %d < %d\n", len, ntohs(ip->ip_len));
wdenk2d966952002-10-31 22:12:35 +00001155 return;
1156 }
1157 len = ntohs(ip->ip_len);
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001158 debug_cond(DEBUG_NET_PKT, "len=%d, v=%02x\n",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001159 len, ip->ip_hl_v & 0xff);
Robin Getz0ebf04c2009-07-23 03:01:03 -04001160
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001161 /* Can't deal with anything except IPv4 */
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001162 if ((ip->ip_hl_v & 0xf0) != 0x40)
wdenk2d966952002-10-31 22:12:35 +00001163 return;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001164 /* Can't deal with IP options (headers != 20 bytes) */
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001165 if ((ip->ip_hl_v & 0x0f) > 0x05)
Remy Bohmer6b52cfe2008-06-03 15:48:17 +02001166 return;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001167 /* Check the Checksum of the header */
Simon Glass0da0fcd2015-01-19 22:16:08 -07001168 if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001169 debug("checksum bad\n");
wdenk2d966952002-10-31 22:12:35 +00001170 return;
1171 }
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001172 /* If it is not for us, ignore it */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001173 dst_ip = net_read_ip(&ip->ip_dst);
1174 if (net_ip.s_addr && dst_ip.s_addr != net_ip.s_addr &&
1175 dst_ip.s_addr != 0xFFFFFFFF) {
David Updegraff53a5c422007-06-11 10:41:07 -05001176#ifdef CONFIG_MCAST_TFTP
Joe Hershberger049a95a2015-04-08 01:41:01 -05001177 if (net_mcast_addr != dst_ip)
David Updegraff53a5c422007-06-11 10:41:07 -05001178#endif
Luca Ceresolic819abe2011-05-04 02:40:46 +00001179 return;
wdenk2d966952002-10-31 22:12:35 +00001180 }
Luca Ceresoli03eb1292011-04-18 06:19:50 +00001181 /* Read source IP address for later use */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001182 src_ip = net_read_ip(&ip->ip_src);
wdenk2d966952002-10-31 22:12:35 +00001183 /*
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001184 * The function returns the unchanged packet if it's not
1185 * a fragment, and either the complete packet or NULL if
1186 * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL)
1187 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001188 ip = net_defragment(ip, &len);
Luca Ceresoliccb9ebe2011-05-04 02:40:47 +00001189 if (!ip)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001190 return;
1191 /*
wdenk2d966952002-10-31 22:12:35 +00001192 * watch for ICMP host redirects
1193 *
wdenk8bde7f72003-06-27 21:31:46 +00001194 * There is no real handler code (yet). We just watch
1195 * for ICMP host redirect messages. In case anybody
1196 * sees these messages: please contact me
1197 * (wd@denx.de), or - even better - send me the
1198 * necessary fixes :-)
wdenk2d966952002-10-31 22:12:35 +00001199 *
wdenk8bde7f72003-06-27 21:31:46 +00001200 * Note: in all cases where I have seen this so far
1201 * it was a problem with the router configuration,
1202 * for instance when a router was configured in the
1203 * BOOTP reply, but the TFTP server was on the same
1204 * subnet. So this is probably a warning that your
1205 * configuration might be wrong. But I'm not really
1206 * sure if there aren't any other situations.
Simon Glass4793ee62011-10-24 18:00:01 +00001207 *
1208 * Simon Glass <sjg@chromium.org>: We get an ICMP when
1209 * we send a tftp packet to a dead connection, or when
1210 * there is no server at the other end.
wdenk2d966952002-10-31 22:12:35 +00001211 */
1212 if (ip->ip_p == IPPROTO_ICMP) {
Simon Glass8f79bb12011-10-24 18:00:00 +00001213 receive_icmp(ip, len, src_ip, et);
1214 return;
wdenk2d966952002-10-31 22:12:35 +00001215 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1216 return;
1217 }
1218
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001219 debug_cond(DEBUG_DEV_PKT,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001220 "received UDP (to=%pI4, from=%pI4, len=%d)\n",
1221 &dst_ip, &src_ip, len);
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001222
Stefan Roese8534bf92005-08-12 20:06:52 +02001223#ifdef CONFIG_UDP_CHECKSUM
1224 if (ip->udp_xsum != 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001225 ulong xsum;
Stefan Roese8534bf92005-08-12 20:06:52 +02001226 ushort *sumptr;
1227 ushort sumlen;
1228
1229 xsum = ip->ip_p;
1230 xsum += (ntohs(ip->udp_len));
Joe Hershberger049a95a2015-04-08 01:41:01 -05001231 xsum += (ntohl(ip->ip_src.s_addr) >> 16) & 0x0000ffff;
1232 xsum += (ntohl(ip->ip_src.s_addr) >> 0) & 0x0000ffff;
1233 xsum += (ntohl(ip->ip_dst.s_addr) >> 16) & 0x0000ffff;
1234 xsum += (ntohl(ip->ip_dst.s_addr) >> 0) & 0x0000ffff;
Stefan Roese8534bf92005-08-12 20:06:52 +02001235
1236 sumlen = ntohs(ip->udp_len);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001237 sumptr = (ushort *)&(ip->udp_src);
Stefan Roese8534bf92005-08-12 20:06:52 +02001238
1239 while (sumlen > 1) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001240 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001241
1242 sumdata = *sumptr++;
1243 xsum += ntohs(sumdata);
1244 sumlen -= 2;
1245 }
1246 if (sumlen > 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001247 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001248
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001249 sumdata = *(unsigned char *)sumptr;
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001250 sumdata = (sumdata << 8) & 0xff00;
Stefan Roese8534bf92005-08-12 20:06:52 +02001251 xsum += sumdata;
1252 }
1253 while ((xsum >> 16) != 0) {
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001254 xsum = (xsum & 0x0000ffff) +
1255 ((xsum >> 16) & 0x0000ffff);
Stefan Roese8534bf92005-08-12 20:06:52 +02001256 }
1257 if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
Wolfgang Denk9b55a252008-07-11 01:16:00 +02001258 printf(" UDP wrong checksum %08lx %08x\n",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001259 xsum, ntohs(ip->udp_xsum));
Stefan Roese8534bf92005-08-12 20:06:52 +02001260 return;
1261 }
1262 }
1263#endif
1264
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001265#if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
Joe Hershberger594c26f2012-05-23 07:58:04 +00001266 nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE,
Joe Hershbergerece223b2012-05-23 07:59:15 +00001267 src_ip,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001268 ntohs(ip->udp_dst),
Joe Hershbergerece223b2012-05-23 07:59:15 +00001269 ntohs(ip->udp_src),
1270 ntohs(ip->udp_len) - UDP_HDR_SIZE);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001271#endif
1272 /*
1273 * IP header OK. Pass the packet to the current handler.
1274 */
1275 (*udp_packet_handler)((uchar *)ip + IP_UDP_HDR_SIZE,
1276 ntohs(ip->udp_dst),
1277 src_ip,
1278 ntohs(ip->udp_src),
1279 ntohs(ip->udp_len) - UDP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001280 break;
1281 }
1282}
1283
wdenk2d966952002-10-31 22:12:35 +00001284/**********************************************************************/
1285
Simon Glasse4bf0c52011-10-24 18:00:02 +00001286static int net_check_prereq(enum proto_t protocol)
wdenk2d966952002-10-31 22:12:35 +00001287{
1288 switch (protocol) {
wdenk6e592382004-04-18 17:39:38 +00001289 /* Fall through */
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001290#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +00001291 case PING:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001292 if (net_ping_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001293 puts("*** ERROR: ping address not given\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001294 return 1;
wdenk6e592382004-04-18 17:39:38 +00001295 }
1296 goto common;
wdenk73a8b272003-06-05 19:27:42 +00001297#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001298#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +00001299 case SNTP:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001300 if (net_ntp_server.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001301 puts("*** ERROR: NTP server address not given\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001302 return 1;
wdenkea287de2005-04-01 00:25:43 +00001303 }
1304 goto common;
1305#endif
Robin Getz1a32bf42009-07-20 14:53:54 -04001306#if defined(CONFIG_CMD_DNS)
1307 case DNS:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001308 if (net_dns_server.s_addr == 0) {
Robin Getz1a32bf42009-07-20 14:53:54 -04001309 puts("*** ERROR: DNS server address not given\n");
1310 return 1;
1311 }
1312 goto common;
1313#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001314#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +00001315 case NFS:
1316#endif
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001317 /* Fall through */
Simon Glasse4bf0c52011-10-24 18:00:02 +00001318 case TFTPGET:
Simon Glass1fb7cd42011-10-24 18:00:07 +00001319 case TFTPPUT:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001320 if (net_server_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001321 puts("*** ERROR: `serverip' not set\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001322 return 1;
wdenk6e592382004-04-18 17:39:38 +00001323 }
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001324#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \
1325 defined(CONFIG_CMD_DNS)
1326common:
wdenk73a8b272003-06-05 19:27:42 +00001327#endif
Simon Guinot8b6bbe12011-05-01 23:38:40 +00001328 /* Fall through */
wdenk73a8b272003-06-05 19:27:42 +00001329
Simon Guinot8b6bbe12011-05-01 23:38:40 +00001330 case NETCONS:
Luca Ceresoli7a83af02011-05-17 00:03:40 +00001331 case TFTPSRV:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001332 if (net_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001333 puts("*** ERROR: `ipaddr' not set\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001334 return 1;
wdenk6e592382004-04-18 17:39:38 +00001335 }
1336 /* Fall through */
wdenk2d966952002-10-31 22:12:35 +00001337
Peter Tyserbf6cb242010-09-30 11:25:48 -05001338#ifdef CONFIG_CMD_RARP
wdenk2d966952002-10-31 22:12:35 +00001339 case RARP:
Peter Tyserbf6cb242010-09-30 11:25:48 -05001340#endif
wdenk2d966952002-10-31 22:12:35 +00001341 case BOOTP:
wdenka3d991b2004-04-15 21:48:45 +00001342 case CDP:
Peter Tyserbf6cb242010-09-30 11:25:48 -05001343 case DHCP:
Joe Hershbergerd22c3382012-05-23 08:00:12 +00001344 case LINKLOCAL:
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001345 if (memcmp(net_ethaddr, "\0\0\0\0\0\0", 6) == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001346 int num = eth_get_dev_index();
wdenk2d966952002-10-31 22:12:35 +00001347
wdenk6e592382004-04-18 17:39:38 +00001348 switch (num) {
1349 case -1:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001350 puts("*** ERROR: No ethernet found.\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001351 return 1;
wdenk6e592382004-04-18 17:39:38 +00001352 case 0:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001353 puts("*** ERROR: `ethaddr' not set\n");
wdenk2d966952002-10-31 22:12:35 +00001354 break;
wdenk6e592382004-04-18 17:39:38 +00001355 default:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001356 printf("*** ERROR: `eth%daddr' not set\n",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001357 num);
wdenk2d966952002-10-31 22:12:35 +00001358 break;
wdenk2d966952002-10-31 22:12:35 +00001359 }
wdenk6e592382004-04-18 17:39:38 +00001360
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001361 net_start_again();
Luca Ceresoli92895de2011-05-04 02:40:45 +00001362 return 2;
wdenk6e592382004-04-18 17:39:38 +00001363 }
1364 /* Fall through */
1365 default:
Luca Ceresoli92895de2011-05-04 02:40:45 +00001366 return 0;
wdenk2d966952002-10-31 22:12:35 +00001367 }
Luca Ceresoli92895de2011-05-04 02:40:45 +00001368 return 0; /* OK */
wdenk2d966952002-10-31 22:12:35 +00001369}
1370/**********************************************************************/
1371
1372int
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001373net_eth_hdr_size(void)
wdenka3d991b2004-04-15 21:48:45 +00001374{
1375 ushort myvlanid;
wdenk2d966952002-10-31 22:12:35 +00001376
Joe Hershberger4fd50552015-04-08 01:41:17 -05001377 myvlanid = ntohs(net_our_vlan);
wdenka3d991b2004-04-15 21:48:45 +00001378 if (myvlanid == (ushort)-1)
1379 myvlanid = VLAN_NONE;
1380
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001381 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE :
1382 VLAN_ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001383}
1384
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001385int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot)
wdenk2d966952002-10-31 22:12:35 +00001386{
Joe Hershbergercb487f52012-05-23 07:58:06 +00001387 struct ethernet_hdr *et = (struct ethernet_hdr *)xet;
wdenka3d991b2004-04-15 21:48:45 +00001388 ushort myvlanid;
1389
Joe Hershberger4fd50552015-04-08 01:41:17 -05001390 myvlanid = ntohs(net_our_vlan);
wdenka3d991b2004-04-15 21:48:45 +00001391 if (myvlanid == (ushort)-1)
1392 myvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +00001393
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001394 memcpy(et->et_dest, dest_ethaddr, 6);
1395 memcpy(et->et_src, net_ethaddr, 6);
wdenka3d991b2004-04-15 21:48:45 +00001396 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
Luca Ceresolic819abe2011-05-04 02:40:46 +00001397 et->et_protlen = htons(prot);
wdenka3d991b2004-04-15 21:48:45 +00001398 return ETHER_HDR_SIZE;
1399 } else {
Joe Hershbergerc68cca32012-05-23 07:58:07 +00001400 struct vlan_ethernet_hdr *vet =
1401 (struct vlan_ethernet_hdr *)xet;
wdenk2d966952002-10-31 22:12:35 +00001402
wdenka3d991b2004-04-15 21:48:45 +00001403 vet->vet_vlan_type = htons(PROT_VLAN);
1404 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1405 vet->vet_type = htons(prot);
1406 return VLAN_ETHER_HDR_SIZE;
1407 }
1408}
wdenk2d966952002-10-31 22:12:35 +00001409
Joe Hershbergere7111012012-05-23 07:59:16 +00001410int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot)
1411{
1412 ushort protlen;
1413
1414 memcpy(et->et_dest, addr, 6);
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001415 memcpy(et->et_src, net_ethaddr, 6);
Joe Hershbergere7111012012-05-23 07:59:16 +00001416 protlen = ntohs(et->et_protlen);
1417 if (protlen == PROT_VLAN) {
1418 struct vlan_ethernet_hdr *vet =
1419 (struct vlan_ethernet_hdr *)et;
1420 vet->vet_type = htons(prot);
1421 return VLAN_ETHER_HDR_SIZE;
1422 } else if (protlen > 1514) {
1423 et->et_protlen = htons(prot);
1424 return ETHER_HDR_SIZE;
1425 } else {
1426 /* 802.2 + SNAP */
1427 struct e802_hdr *et802 = (struct e802_hdr *)et;
1428 et802->et_prot = htons(prot);
1429 return E802_HDR_SIZE;
1430 }
1431}
1432
Joe Hershberger049a95a2015-04-08 01:41:01 -05001433void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source)
wdenk2d966952002-10-31 22:12:35 +00001434{
Joe Hershberger4b11c912012-05-23 07:59:07 +00001435 struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
1436
1437 /*
1438 * Construct an IP header.
1439 */
1440 /* IP_HDR_SIZE / 4 (not including UDP) */
1441 ip->ip_hl_v = 0x45;
1442 ip->ip_tos = 0;
1443 ip->ip_len = htons(IP_HDR_SIZE);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001444 ip->ip_id = htons(net_ip_id++);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001445 ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
1446 ip->ip_ttl = 255;
1447 ip->ip_sum = 0;
1448 /* already in network byte order */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001449 net_copy_ip((void *)&ip->ip_src, &source);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001450 /* already in network byte order */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001451 net_copy_ip((void *)&ip->ip_dst, &dest);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001452}
1453
Joe Hershberger049a95a2015-04-08 01:41:01 -05001454void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport,
Joe Hershberger4b11c912012-05-23 07:59:07 +00001455 int len)
1456{
1457 struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
wdenk2d966952002-10-31 22:12:35 +00001458
1459 /*
1460 * If the data is an odd number of bytes, zero the
1461 * byte after the last byte so that the checksum
1462 * will work.
1463 */
1464 if (len & 1)
Joe Hershberger4b11c912012-05-23 07:59:07 +00001465 pkt[IP_UDP_HDR_SIZE + len] = 0;
wdenk2d966952002-10-31 22:12:35 +00001466
Joe Hershberger049a95a2015-04-08 01:41:01 -05001467 net_set_ip_header(pkt, dest, net_ip);
Joe Hershberger594c26f2012-05-23 07:58:04 +00001468 ip->ip_len = htons(IP_UDP_HDR_SIZE + len);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001469 ip->ip_p = IPPROTO_UDP;
Simon Glass0da0fcd2015-01-19 22:16:08 -07001470 ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001471
wdenk2d966952002-10-31 22:12:35 +00001472 ip->udp_src = htons(sport);
1473 ip->udp_dst = htons(dport);
Joe Hershberger594c26f2012-05-23 07:58:04 +00001474 ip->udp_len = htons(UDP_HDR_SIZE + len);
wdenk2d966952002-10-31 22:12:35 +00001475 ip->udp_xsum = 0;
wdenk2d966952002-10-31 22:12:35 +00001476}
1477
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001478void copy_filename(char *dst, const char *src, int size)
wdenk2d966952002-10-31 22:12:35 +00001479{
1480 if (*src && (*src == '"')) {
1481 ++src;
1482 --size;
1483 }
1484
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001485 while ((--size > 0) && *src && (*src != '"'))
wdenk2d966952002-10-31 22:12:35 +00001486 *dst++ = *src++;
wdenk2d966952002-10-31 22:12:35 +00001487 *dst = '\0';
1488}
1489
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001490#if defined(CONFIG_CMD_NFS) || \
1491 defined(CONFIG_CMD_SNTP) || \
1492 defined(CONFIG_CMD_DNS)
Robin Getz1a32bf42009-07-20 14:53:54 -04001493/*
Robin Getz97399462010-03-08 14:07:00 -05001494 * make port a little random (1024-17407)
1495 * This keeps the math somewhat trivial to compute, and seems to work with
1496 * all supported protocols/clients/servers
Robin Getz1a32bf42009-07-20 14:53:54 -04001497 */
1498unsigned int random_port(void)
1499{
Robin Getz97399462010-03-08 14:07:00 -05001500 return 1024 + (get_timer(0) % 0x4000);
Robin Getz1a32bf42009-07-20 14:53:54 -04001501}
1502#endif
1503
Joe Hershberger049a95a2015-04-08 01:41:01 -05001504void ip_to_string(struct in_addr x, char *s)
wdenk2d966952002-10-31 22:12:35 +00001505{
Joe Hershberger049a95a2015-04-08 01:41:01 -05001506 x.s_addr = ntohl(x.s_addr);
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001507 sprintf(s, "%d.%d.%d.%d",
Joe Hershberger049a95a2015-04-08 01:41:01 -05001508 (int) ((x.s_addr >> 24) & 0xff),
1509 (int) ((x.s_addr >> 16) & 0xff),
1510 (int) ((x.s_addr >> 8) & 0xff),
1511 (int) ((x.s_addr >> 0) & 0xff)
wdenk6e592382004-04-18 17:39:38 +00001512 );
wdenk2d966952002-10-31 22:12:35 +00001513}
1514
Joe Hershberger4fd50552015-04-08 01:41:17 -05001515void vlan_to_string(ushort x, char *s)
wdenka3d991b2004-04-15 21:48:45 +00001516{
1517 x = ntohs(x);
1518
1519 if (x == (ushort)-1)
1520 x = VLAN_NONE;
1521
1522 if (x == VLAN_NONE)
1523 strcpy(s, "none");
1524 else
1525 sprintf(s, "%d", x & VLAN_IDMASK);
1526}
1527
Joe Hershberger4fd50552015-04-08 01:41:17 -05001528ushort string_to_vlan(const char *s)
wdenka3d991b2004-04-15 21:48:45 +00001529{
1530 ushort id;
1531
1532 if (s == NULL)
wdenkb9711de2004-04-25 13:18:40 +00001533 return htons(VLAN_NONE);
wdenka3d991b2004-04-15 21:48:45 +00001534
1535 if (*s < '0' || *s > '9')
1536 id = VLAN_NONE;
1537 else
1538 id = (ushort)simple_strtoul(s, NULL, 10);
1539
wdenkb9711de2004-04-25 13:18:40 +00001540 return htons(id);
wdenka3d991b2004-04-15 21:48:45 +00001541}
1542
Joe Hershberger4fd50552015-04-08 01:41:17 -05001543ushort getenv_vlan(char *var)
wdenka3d991b2004-04-15 21:48:45 +00001544{
Joe Hershberger4fd50552015-04-08 01:41:17 -05001545 return string_to_vlan(getenv(var));
wdenka3d991b2004-04-15 21:48:45 +00001546}