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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>
Simon Glass24b852a2015-11-08 23:47:45 -070086#include <console.h>
Joe Hershbergera9f51c92012-12-11 22:16:26 -060087#include <environment.h>
Joe Hershberger60304592015-03-22 17:09:24 -050088#include <errno.h>
wdenk2d966952002-10-31 22:12:35 +000089#include <net.h>
Lukasz Majewski34696952015-08-24 00:21:43 +020090#include <net/tftp.h>
Joe Hershberger4545f4e2012-05-23 07:58:15 +000091#if defined(CONFIG_STATUS_LED)
92#include <miiphy.h>
93#include <status_led.h>
94#endif
95#include <watchdog.h>
96#include <linux/compiler.h>
Joe Hershbergerd280d3f2012-05-23 07:58:01 +000097#include "arp.h"
wdenk2d966952002-10-31 22:12:35 +000098#include "bootp.h"
Joe Hershbergerf575ae12012-05-23 07:57:59 +000099#include "cdp.h"
Robin Getz1a32bf42009-07-20 14:53:54 -0400100#if defined(CONFIG_CMD_DNS)
101#include "dns.h"
102#endif
Joe Hershbergerd22c3382012-05-23 08:00:12 +0000103#include "link_local.h"
Joe Hershberger4545f4e2012-05-23 07:58:15 +0000104#include "nfs.h"
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000105#include "ping.h"
Joe Hershberger4545f4e2012-05-23 07:58:15 +0000106#include "rarp.h"
107#if defined(CONFIG_CMD_SNTP)
108#include "sntp.h"
109#endif
wdenk2d966952002-10-31 22:12:35 +0000110
Wolfgang Denkd87080b2006-03-31 18:32:53 +0200111DECLARE_GLOBAL_DATA_PTR;
112
wdenk2d966952002-10-31 22:12:35 +0000113/** BOOTP EXTENTIONS **/
114
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000115/* Our subnet mask (0=unknown) */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500116struct in_addr net_netmask;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000117/* Our gateways IP address */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500118struct in_addr net_gateway;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000119/* Our DNS IP address */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500120struct in_addr net_dns_server;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500121#if defined(CONFIG_BOOTP_DNS2)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000122/* Our 2nd DNS IP address */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500123struct in_addr net_dns_server2;
stroesefe389a82003-08-28 14:17:32 +0000124#endif
wdenk2d966952002-10-31 22:12:35 +0000125
David Updegraff53a5c422007-06-11 10:41:07 -0500126#ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500127struct in_addr net_mcast_addr;
David Updegraff53a5c422007-06-11 10:41:07 -0500128#endif
129
wdenk2d966952002-10-31 22:12:35 +0000130/** END OF BOOTP EXTENTIONS **/
131
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000132/* Our ethernet address */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500133u8 net_ethaddr[6];
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000134/* Boot server enet address */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500135u8 net_server_ethaddr[6];
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000136/* Our IP addr (0 = unknown) */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500137struct in_addr net_ip;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000138/* Server IP addr (0 = unknown) */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500139struct in_addr net_server_ip;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000140/* Current receive packet */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500141uchar *net_rx_packet;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000142/* Current rx packet length */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500143int net_rx_packet_len;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000144/* IP packet ID */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500145static unsigned net_ip_id;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000146/* Ethernet bcast address */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500147const u8 net_bcast_ethaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
148const u8 net_null_ethaddr[6];
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100149#ifdef CONFIG_API
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500150void (*push_packet)(void *, int len) = 0;
Rafal Jaworowskif85b6072007-12-27 18:19:02 +0100151#endif
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000152/* Network loop state */
Joe Hershberger22f6e992012-05-23 07:59:14 +0000153enum net_loop_state net_state;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000154/* Tried all network devices */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500155int net_restart_wrap;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000156/* Network loop restarted */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500157static int net_restarted;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000158/* At least one device configured */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500159static int net_dev_exists;
wdenk2d966952002-10-31 22:12:35 +0000160
wdenk6e592382004-04-18 17:39:38 +0000161/* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000162/* default is without VLAN */
Joe Hershberger4fd50552015-04-08 01:41:17 -0500163ushort net_our_vlan = 0xFFFF;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000164/* ditto */
Joe Hershberger4fd50552015-04-08 01:41:17 -0500165ushort net_native_vlan = 0xFFFF;
wdenka3d991b2004-04-15 21:48:45 +0000166
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000167/* Boot File name */
Jacob Stiffler11a69ff2015-09-30 10:12:05 -0400168char net_boot_file_name[1024];
Joe Hershberger14111572015-04-08 01:41:02 -0500169/* The actual transferred size of the bootfile (in bytes) */
170u32 net_boot_file_size;
171/* Boot file size in blocks as reported by the DHCP server */
172u32 net_boot_file_expected_size_in_blocks;
wdenk2d966952002-10-31 22:12:35 +0000173
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500174#if defined(CONFIG_CMD_SNTP)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000175/* NTP server IP address */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500176struct in_addr net_ntp_server;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000177/* offset time from UTC */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500178int net_ntp_time_offset;
wdenkea287de2005-04-01 00:25:43 +0000179#endif
180
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500181static uchar net_pkt_buf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
Joe Hershberger2a504df2015-03-22 17:09:11 -0500182/* Receive packets */
183uchar *net_rx_packets[PKTBUFSRX];
Joe Hershbergerece223b2012-05-23 07:59:15 +0000184/* Current UDP RX packet handler */
185static rxhand_f *udp_packet_handler;
186/* Current ARP RX packet handler */
187static rxhand_f *arp_packet_handler;
Simon Glass39bccd22011-10-26 14:18:38 +0000188#ifdef CONFIG_CMD_TFTPPUT
Joe Hershbergerece223b2012-05-23 07:59:15 +0000189/* Current ICMP rx handler */
190static rxhand_icmp_f *packet_icmp_handler;
Simon Glass39bccd22011-10-26 14:18:38 +0000191#endif
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000192/* Current timeout handler */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500193static thand_f *time_handler;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000194/* Time base value */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500195static ulong time_start;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000196/* Current timeout value */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500197static ulong time_delta;
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000198/* THE transmit packet */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500199uchar *net_tx_packet;
wdenk2d966952002-10-31 22:12:35 +0000200
Simon Glasse4bf0c52011-10-24 18:00:02 +0000201static int net_check_prereq(enum proto_t protocol);
wdenk2d966952002-10-31 22:12:35 +0000202
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500203static int net_try_count;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100204
Jim Linb63056d2013-08-13 19:03:05 +0800205int __maybe_unused net_busy_flag;
206
wdenk2d966952002-10-31 22:12:35 +0000207/**********************************************************************/
wdenk73a8b272003-06-05 19:27:42 +0000208
Joe Hershbergera9f51c92012-12-11 22:16:26 -0600209static int on_bootfile(const char *name, const char *value, enum env_op op,
210 int flags)
211{
Joe Hershbergerfd305632015-05-20 14:27:23 -0500212 if (flags & H_PROGRAMMATIC)
213 return 0;
214
Joe Hershbergera9f51c92012-12-11 22:16:26 -0600215 switch (op) {
216 case env_op_create:
217 case env_op_overwrite:
Joe Hershberger14111572015-04-08 01:41:02 -0500218 copy_filename(net_boot_file_name, value,
219 sizeof(net_boot_file_name));
Joe Hershbergera9f51c92012-12-11 22:16:26 -0600220 break;
221 default:
222 break;
223 }
224
225 return 0;
226}
227U_BOOT_ENV_CALLBACK(bootfile, on_bootfile);
228
Joe Hershbergerfd305632015-05-20 14:27:23 -0500229static int on_ipaddr(const char *name, const char *value, enum env_op op,
230 int flags)
231{
232 if (flags & H_PROGRAMMATIC)
233 return 0;
234
235 net_ip = string_to_ip(value);
236
237 return 0;
238}
239U_BOOT_ENV_CALLBACK(ipaddr, on_ipaddr);
240
241static int on_gatewayip(const char *name, const char *value, enum env_op op,
242 int flags)
243{
244 if (flags & H_PROGRAMMATIC)
245 return 0;
246
247 net_gateway = string_to_ip(value);
248
249 return 0;
250}
251U_BOOT_ENV_CALLBACK(gatewayip, on_gatewayip);
252
253static int on_netmask(const char *name, const char *value, enum env_op op,
254 int flags)
255{
256 if (flags & H_PROGRAMMATIC)
257 return 0;
258
259 net_netmask = string_to_ip(value);
260
261 return 0;
262}
263U_BOOT_ENV_CALLBACK(netmask, on_netmask);
264
265static int on_serverip(const char *name, const char *value, enum env_op op,
266 int flags)
267{
268 if (flags & H_PROGRAMMATIC)
269 return 0;
270
271 net_server_ip = string_to_ip(value);
272
273 return 0;
274}
275U_BOOT_ENV_CALLBACK(serverip, on_serverip);
276
277static int on_nvlan(const char *name, const char *value, enum env_op op,
278 int flags)
279{
280 if (flags & H_PROGRAMMATIC)
281 return 0;
282
283 net_native_vlan = string_to_vlan(value);
284
285 return 0;
286}
287U_BOOT_ENV_CALLBACK(nvlan, on_nvlan);
288
289static int on_vlan(const char *name, const char *value, enum env_op op,
290 int flags)
291{
292 if (flags & H_PROGRAMMATIC)
293 return 0;
294
295 net_our_vlan = string_to_vlan(value);
296
297 return 0;
298}
299U_BOOT_ENV_CALLBACK(vlan, on_vlan);
300
301#if defined(CONFIG_CMD_DNS)
302static int on_dnsip(const char *name, const char *value, enum env_op op,
303 int flags)
304{
305 if (flags & H_PROGRAMMATIC)
306 return 0;
307
308 net_dns_server = string_to_ip(value);
309
310 return 0;
311}
312U_BOOT_ENV_CALLBACK(dnsip, on_dnsip);
313#endif
314
Simon Glasse4a3d572011-10-27 06:24:32 +0000315/*
316 * Check if autoload is enabled. If so, use either NFS or TFTP to download
317 * the boot file.
318 */
319void net_auto_load(void)
320{
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600321#if defined(CONFIG_CMD_NFS)
Simon Glasse4a3d572011-10-27 06:24:32 +0000322 const char *s = getenv("autoload");
323
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600324 if (s != NULL && strcmp(s, "NFS") == 0) {
325 /*
326 * Use NFS to load the bootfile.
327 */
Joe Hershberger68c76a32015-04-08 01:41:10 -0500328 nfs_start();
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600329 return;
330 }
Simon Glasse4a3d572011-10-27 06:24:32 +0000331#endif
Joe Hershbergerec8a2522012-12-11 22:16:22 -0600332 if (getenv_yesno("autoload") == 0) {
333 /*
334 * Just use BOOTP/RARP to configure system;
335 * Do not use TFTP to load the bootfile.
336 */
337 net_set_state(NETLOOP_SUCCESS);
338 return;
Simon Glasse4a3d572011-10-27 06:24:32 +0000339 }
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500340 tftp_start(TFTPGET);
Simon Glasse4a3d572011-10-27 06:24:32 +0000341}
342
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500343static void net_init_loop(void)
Heiko Schocher2f70c492009-02-10 09:38:52 +0100344{
Jim Lin7315cfd2013-05-17 17:41:03 +0800345 if (eth_get_dev())
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500346 memcpy(net_ethaddr, eth_get_ethaddr(), 6);
Michael Zaidman3c172c42009-04-04 01:43:00 +0300347
Heiko Schocherda954272009-04-28 08:36:11 +0200348 return;
Heiko Schocher2f70c492009-02-10 09:38:52 +0100349}
350
Joe Hershbergerece223b2012-05-23 07:59:15 +0000351static void net_clear_handlers(void)
352{
353 net_set_udp_handler(NULL);
354 net_set_arp_handler(NULL);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500355 net_set_timeout_handler(0, NULL);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000356}
357
358static void net_cleanup_loop(void)
359{
360 net_clear_handlers();
361}
362
Joe Hershberger46c495d2012-05-23 07:59:22 +0000363void net_init(void)
364{
365 static int first_call = 1;
366
367 if (first_call) {
368 /*
369 * Setup packet buffers, aligned correctly.
370 */
371 int i;
372
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500373 net_tx_packet = &net_pkt_buf[0] + (PKTALIGN - 1);
374 net_tx_packet -= (ulong)net_tx_packet % PKTALIGN;
Joe Hershberger2a504df2015-03-22 17:09:11 -0500375 for (i = 0; i < PKTBUFSRX; i++) {
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500376 net_rx_packets[i] = net_tx_packet +
377 (i + 1) * PKTSIZE_ALIGN;
Joe Hershberger2a504df2015-03-22 17:09:11 -0500378 }
Joe Hershberger85d25e02015-04-08 01:41:08 -0500379 arp_init();
Joe Hershberger46c495d2012-05-23 07:59:22 +0000380 net_clear_handlers();
381
382 /* Only need to setup buffer pointers once. */
383 first_call = 0;
384 }
385
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500386 net_init_loop();
Joe Hershberger46c495d2012-05-23 07:59:22 +0000387}
388
wdenk73a8b272003-06-05 19:27:42 +0000389/**********************************************************************/
wdenk2d966952002-10-31 22:12:35 +0000390/*
391 * Main network processing loop.
392 */
393
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500394int net_loop(enum proto_t protocol)
wdenk2d966952002-10-31 22:12:35 +0000395{
Joe Hershberger60304592015-03-22 17:09:24 -0500396 int ret = -EINVAL;
wdenk2d966952002-10-31 22:12:35 +0000397
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500398 net_restarted = 0;
399 net_dev_exists = 0;
400 net_try_count = 1;
401 debug_cond(DEBUG_INT_STATE, "--- net_loop Entry\n");
wdenk73a8b272003-06-05 19:27:42 +0000402
Simon Glass573f14f2011-12-10 11:08:06 +0000403 bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start");
Joe Hershberger46c495d2012-05-23 07:59:22 +0000404 net_init();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000405 if (eth_is_on_demand_init() || protocol != NETCONS) {
wdenkb1bf6f22005-04-03 14:52:59 +0000406 eth_halt();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000407 eth_set_current();
Joe Hershberger60304592015-03-22 17:09:24 -0500408 ret = eth_init();
409 if (ret < 0) {
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000410 eth_halt();
Joe Hershberger60304592015-03-22 17:09:24 -0500411 return ret;
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000412 }
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500413 } else {
Joe Hershbergerd2eaec62015-03-22 17:09:06 -0500414 eth_init_state_only();
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500415 }
wdenk2d966952002-10-31 22:12:35 +0000416restart:
Jim Linb63056d2013-08-13 19:03:05 +0800417#ifdef CONFIG_USB_KEYBOARD
418 net_busy_flag = 0;
419#endif
Joe Hershberger22f6e992012-05-23 07:59:14 +0000420 net_set_state(NETLOOP_CONTINUE);
wdenk2d966952002-10-31 22:12:35 +0000421
422 /*
423 * Start the ball rolling with the given start function. From
424 * here on, this code is a state machine driven by received
425 * packets and timer events.
426 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500427 debug_cond(DEBUG_INT_STATE, "--- net_loop Init\n");
428 net_init_loop();
wdenk2d966952002-10-31 22:12:35 +0000429
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000430 switch (net_check_prereq(protocol)) {
wdenk2d966952002-10-31 22:12:35 +0000431 case 1:
432 /* network not configured */
wdenkb1bf6f22005-04-03 14:52:59 +0000433 eth_halt();
Joe Hershberger60304592015-03-22 17:09:24 -0500434 return -ENODEV;
wdenk2d966952002-10-31 22:12:35 +0000435
wdenk2d966952002-10-31 22:12:35 +0000436 case 2:
437 /* network device not configured */
438 break;
wdenk2d966952002-10-31 22:12:35 +0000439
440 case 0:
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500441 net_dev_exists = 1;
Joe Hershberger14111572015-04-08 01:41:02 -0500442 net_boot_file_size = 0;
wdenk2d966952002-10-31 22:12:35 +0000443 switch (protocol) {
Simon Glasse4bf0c52011-10-24 18:00:02 +0000444 case TFTPGET:
Simon Glass1fb7cd42011-10-24 18:00:07 +0000445#ifdef CONFIG_CMD_TFTPPUT
446 case TFTPPUT:
447#endif
wdenk2d966952002-10-31 22:12:35 +0000448 /* always use ARP to get server ethernet address */
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500449 tftp_start(protocol);
wdenk2d966952002-10-31 22:12:35 +0000450 break;
Luca Ceresoli7a83af02011-05-17 00:03:40 +0000451#ifdef CONFIG_CMD_TFTPSRV
452 case TFTPSRV:
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500453 tftp_start_server();
Luca Ceresoli7a83af02011-05-17 00:03:40 +0000454 break;
455#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500456#if defined(CONFIG_CMD_DHCP)
wdenk2d966952002-10-31 22:12:35 +0000457 case DHCP:
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500458 bootp_reset();
Joe Hershberger049a95a2015-04-08 01:41:01 -0500459 net_ip.s_addr = 0;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500460 dhcp_request(); /* Basically same as BOOTP */
wdenk2d966952002-10-31 22:12:35 +0000461 break;
Jon Loeliger610f2e92007-07-10 11:05:02 -0500462#endif
wdenk2d966952002-10-31 22:12:35 +0000463
464 case BOOTP:
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500465 bootp_reset();
Joe Hershberger049a95a2015-04-08 01:41:01 -0500466 net_ip.s_addr = 0;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500467 bootp_request();
wdenk2d966952002-10-31 22:12:35 +0000468 break;
469
Peter Tyserbf6cb242010-09-30 11:25:48 -0500470#if defined(CONFIG_CMD_RARP)
wdenk2d966952002-10-31 22:12:35 +0000471 case RARP:
Joe Hershberger698d78e2015-04-08 01:41:11 -0500472 rarp_try = 0;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500473 net_ip.s_addr = 0;
Joe Hershberger698d78e2015-04-08 01:41:11 -0500474 rarp_request();
wdenk2d966952002-10-31 22:12:35 +0000475 break;
Peter Tyserbf6cb242010-09-30 11:25:48 -0500476#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500477#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +0000478 case PING:
Joe Hershbergera36b12f2012-05-23 07:58:02 +0000479 ping_start();
wdenk73a8b272003-06-05 19:27:42 +0000480 break;
481#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500482#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +0000483 case NFS:
Joe Hershberger68c76a32015-04-08 01:41:10 -0500484 nfs_start();
wdenkcbd8a352004-02-24 02:00:03 +0000485 break;
486#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500487#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +0000488 case CDP:
Joe Hershberger6aede5b2015-04-08 01:41:14 -0500489 cdp_start();
wdenka3d991b2004-04-15 21:48:45 +0000490 break;
491#endif
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500492#if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
wdenk68ceb292004-08-02 21:11:11 +0000493 case NETCONS:
Joe Hershberger6a38a5f2015-04-08 01:41:16 -0500494 nc_start();
wdenk68ceb292004-08-02 21:11:11 +0000495 break;
496#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500497#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +0000498 case SNTP:
Joe Hershberger38ba2552015-04-08 01:41:12 -0500499 sntp_start();
wdenkea287de2005-04-01 00:25:43 +0000500 break;
501#endif
Robin Getz1a32bf42009-07-20 14:53:54 -0400502#if defined(CONFIG_CMD_DNS)
503 case DNS:
Joe Hershberger786eac52015-04-08 01:41:15 -0500504 dns_start();
Robin Getz1a32bf42009-07-20 14:53:54 -0400505 break;
506#endif
Joe Hershbergerd22c3382012-05-23 08:00:12 +0000507#if defined(CONFIG_CMD_LINK_LOCAL)
508 case LINKLOCAL:
509 link_local_start();
510 break;
511#endif
wdenk2d966952002-10-31 22:12:35 +0000512 default:
513 break;
514 }
515
wdenk2d966952002-10-31 22:12:35 +0000516 break;
517 }
518
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500519#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Luca Ceresoli3e38e422011-05-11 03:59:54 +0000520#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
521 defined(CONFIG_STATUS_LED) && \
522 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000523 /*
wdenk42d1f032003-10-15 23:53:47 +0000524 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000525 */
Luca Ceresolid3c65b02011-05-04 02:40:43 +0000526 if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR))
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000527 status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
Luca Ceresolid3c65b02011-05-04 02:40:43 +0000528 else
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000529 status_led_set(STATUS_LED_RED, STATUS_LED_ON);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200530#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000531#endif /* CONFIG_MII, ... */
Jim Linb63056d2013-08-13 19:03:05 +0800532#ifdef CONFIG_USB_KEYBOARD
533 net_busy_flag = 1;
534#endif
wdenk2d966952002-10-31 22:12:35 +0000535
536 /*
537 * Main packet reception loop. Loop receiving packets until
Joe Hershberger22f6e992012-05-23 07:59:14 +0000538 * someone sets `net_state' to a state that terminates.
wdenk2d966952002-10-31 22:12:35 +0000539 */
540 for (;;) {
541 WATCHDOG_RESET();
542#ifdef CONFIG_SHOW_ACTIVITY
Joe Hershberger48522bb2012-05-15 08:59:08 +0000543 show_activity(1);
wdenk2d966952002-10-31 22:12:35 +0000544#endif
Joe Hershbergerc5a75332015-12-21 16:31:35 -0600545 if (arp_timeout_check() > 0)
546 time_start = get_timer(0);
547
wdenk2d966952002-10-31 22:12:35 +0000548 /*
549 * Check the ethernet for a new packet. The ethernet
550 * receive routine will process it.
Joe Hershberger60304592015-03-22 17:09:24 -0500551 * Most drivers return the most recent packet size, but not
552 * errors that may have happened.
wdenk2d966952002-10-31 22:12:35 +0000553 */
Guennadi Liakhovetski40cb90e2008-04-03 17:04:19 +0200554 eth_rx();
wdenk2d966952002-10-31 22:12:35 +0000555
556 /*
557 * Abort if ctrl-c was pressed.
558 */
559 if (ctrlc()) {
Joe Hershbergere94070c2012-05-23 07:59:24 +0000560 /* cancel any ARP that may not have completed */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500561 net_arp_wait_packet_ip.s_addr = 0;
Joe Hershbergere94070c2012-05-23 07:59:24 +0000562
Joe Hershbergerece223b2012-05-23 07:59:15 +0000563 net_cleanup_loop();
wdenk8bde7f72003-06-27 21:31:46 +0000564 eth_halt();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000565 /* Invalidate the last protocol */
566 eth_set_last_protocol(BOOTP);
567
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000568 puts("\nAbort\n");
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000569 /* include a debug print as well incase the debug
570 messages are directed to stderr */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500571 debug_cond(DEBUG_INT_STATE, "--- net_loop Abort!\n");
Michal Simek19a4fba2015-08-21 08:49:48 +0200572 ret = -EINTR;
Simon Glass4793ee62011-10-24 18:00:01 +0000573 goto done;
wdenk2d966952002-10-31 22:12:35 +0000574 }
575
wdenk2d966952002-10-31 22:12:35 +0000576 /*
577 * Check for a timeout, and run the timeout handler
578 * if we have one.
579 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500580 if (time_handler &&
581 ((get_timer(0) - time_start) > time_delta)) {
wdenk2d966952002-10-31 22:12:35 +0000582 thand_f *x;
583
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500584#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000585#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
586 defined(CONFIG_STATUS_LED) && \
587 defined(STATUS_LED_RED)
wdenkfc3e2162003-10-08 22:33:00 +0000588 /*
wdenk42d1f032003-10-15 23:53:47 +0000589 * Echo the inverted link state to the fault LED.
wdenkfc3e2162003-10-08 22:33:00 +0000590 */
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000591 if (miiphy_link(eth_get_dev()->name,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500592 CONFIG_SYS_FAULT_MII_ADDR))
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000593 status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500594 else
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000595 status_led_set(STATUS_LED_RED, STATUS_LED_ON);
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000596#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
wdenkfc3e2162003-10-08 22:33:00 +0000597#endif /* CONFIG_MII, ... */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500598 debug_cond(DEBUG_INT_STATE, "--- net_loop timeout\n");
599 x = time_handler;
600 time_handler = (thand_f *)0;
wdenk2d966952002-10-31 22:12:35 +0000601 (*x)();
602 }
603
Joe Hershberger5c421332015-03-22 17:09:07 -0500604 if (net_state == NETLOOP_FAIL)
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500605 ret = net_start_again();
wdenk2d966952002-10-31 22:12:35 +0000606
Joe Hershberger22f6e992012-05-23 07:59:14 +0000607 switch (net_state) {
wdenk2d966952002-10-31 22:12:35 +0000608 case NETLOOP_RESTART:
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500609 net_restarted = 1;
wdenk2d966952002-10-31 22:12:35 +0000610 goto restart;
611
612 case NETLOOP_SUCCESS:
Joe Hershbergerece223b2012-05-23 07:59:15 +0000613 net_cleanup_loop();
Joe Hershberger14111572015-04-08 01:41:02 -0500614 if (net_boot_file_size > 0) {
615 printf("Bytes transferred = %d (%x hex)\n",
616 net_boot_file_size, net_boot_file_size);
617 setenv_hex("filesize", net_boot_file_size);
Simon Glass978226d2013-02-24 17:33:24 +0000618 setenv_hex("fileaddr", load_addr);
wdenk2d966952002-10-31 22:12:35 +0000619 }
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000620 if (protocol != NETCONS)
621 eth_halt();
622 else
623 eth_halt_state_only();
624
625 eth_set_last_protocol(protocol);
626
Joe Hershberger14111572015-04-08 01:41:02 -0500627 ret = net_boot_file_size;
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500628 debug_cond(DEBUG_INT_STATE, "--- net_loop Success!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000629 goto done;
wdenk2d966952002-10-31 22:12:35 +0000630
631 case NETLOOP_FAIL:
Joe Hershbergerece223b2012-05-23 07:59:15 +0000632 net_cleanup_loop();
Joe Hershbergerf8be7d62012-08-03 10:59:08 +0000633 /* Invalidate the last protocol */
634 eth_set_last_protocol(BOOTP);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500635 debug_cond(DEBUG_INT_STATE, "--- net_loop Fail!\n");
Simon Glass4793ee62011-10-24 18:00:01 +0000636 goto done;
Joe Hershberger22f6e992012-05-23 07:59:14 +0000637
638 case NETLOOP_CONTINUE:
639 continue;
wdenk2d966952002-10-31 22:12:35 +0000640 }
641 }
Simon Glass4793ee62011-10-24 18:00:01 +0000642
643done:
Jim Linb63056d2013-08-13 19:03:05 +0800644#ifdef CONFIG_USB_KEYBOARD
645 net_busy_flag = 0;
646#endif
Simon Glass39bccd22011-10-26 14:18:38 +0000647#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000648 /* Clear out the handlers */
Joe Hershbergerece223b2012-05-23 07:59:15 +0000649 net_set_udp_handler(NULL);
Simon Glass4793ee62011-10-24 18:00:01 +0000650 net_set_icmp_handler(NULL);
Simon Glass39bccd22011-10-26 14:18:38 +0000651#endif
Simon Glass4793ee62011-10-24 18:00:01 +0000652 return ret;
wdenk2d966952002-10-31 22:12:35 +0000653}
654
655/**********************************************************************/
656
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500657static void start_again_timeout_handler(void)
wdenk2d966952002-10-31 22:12:35 +0000658{
Joe Hershberger22f6e992012-05-23 07:59:14 +0000659 net_set_state(NETLOOP_RESTART);
wdenk2d966952002-10-31 22:12:35 +0000660}
661
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500662int net_start_again(void)
wdenk2d966952002-10-31 22:12:35 +0000663{
wdenk6e592382004-04-18 17:39:38 +0000664 char *nretry;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100665 int retry_forever = 0;
666 unsigned long retrycnt = 0;
Joe Hershberger60304592015-03-22 17:09:24 -0500667 int ret;
wdenka3d991b2004-04-15 21:48:45 +0000668
Remy Bohmer67b96e82009-10-28 22:13:39 +0100669 nretry = getenv("netretry");
670 if (nretry) {
671 if (!strcmp(nretry, "yes"))
672 retry_forever = 1;
673 else if (!strcmp(nretry, "no"))
674 retrycnt = 0;
675 else if (!strcmp(nretry, "once"))
676 retrycnt = 1;
677 else
678 retrycnt = simple_strtoul(nretry, NULL, 0);
Joe Hershberger5c421332015-03-22 17:09:07 -0500679 } else {
680 retrycnt = 0;
681 retry_forever = 0;
682 }
Remy Bohmer67b96e82009-10-28 22:13:39 +0100683
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500684 if ((!retry_forever) && (net_try_count >= retrycnt)) {
Remy Bohmer67b96e82009-10-28 22:13:39 +0100685 eth_halt();
Joe Hershberger22f6e992012-05-23 07:59:14 +0000686 net_set_state(NETLOOP_FAIL);
Joe Hershberger60304592015-03-22 17:09:24 -0500687 /*
688 * We don't provide a way for the protocol to return an error,
689 * but this is almost always the reason.
690 */
691 return -ETIMEDOUT;
wdenka3d991b2004-04-15 21:48:45 +0000692 }
Remy Bohmer67b96e82009-10-28 22:13:39 +0100693
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500694 net_try_count++;
Remy Bohmer67b96e82009-10-28 22:13:39 +0100695
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000696 eth_halt();
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100697#if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500698 eth_try_another(!net_restarted);
Matthias Fuchs8b0c5c12007-12-27 16:58:41 +0100699#endif
Joe Hershberger60304592015-03-22 17:09:24 -0500700 ret = eth_init();
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500701 if (net_restart_wrap) {
702 net_restart_wrap = 0;
703 if (net_dev_exists) {
704 net_set_timeout_handler(10000UL,
705 start_again_timeout_handler);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000706 net_set_udp_handler(NULL);
wdenk6e592382004-04-18 17:39:38 +0000707 } else {
Joe Hershberger22f6e992012-05-23 07:59:14 +0000708 net_set_state(NETLOOP_FAIL);
wdenk2d966952002-10-31 22:12:35 +0000709 }
wdenk6e592382004-04-18 17:39:38 +0000710 } else {
Joe Hershberger22f6e992012-05-23 07:59:14 +0000711 net_set_state(NETLOOP_RESTART);
wdenk2d966952002-10-31 22:12:35 +0000712 }
Joe Hershberger60304592015-03-22 17:09:24 -0500713 return ret;
wdenk2d966952002-10-31 22:12:35 +0000714}
715
716/**********************************************************************/
717/*
718 * Miscelaneous bits.
719 */
720
Joe Hershbergerece223b2012-05-23 07:59:15 +0000721static void dummy_handler(uchar *pkt, unsigned dport,
Joe Hershberger049a95a2015-04-08 01:41:01 -0500722 struct in_addr sip, unsigned sport,
Joe Hershbergerece223b2012-05-23 07:59:15 +0000723 unsigned len)
Joe Hershbergerd280d3f2012-05-23 07:58:01 +0000724{
Joe Hershbergerd280d3f2012-05-23 07:58:01 +0000725}
726
Joe Hershbergerece223b2012-05-23 07:59:15 +0000727rxhand_f *net_get_udp_handler(void)
wdenk2d966952002-10-31 22:12:35 +0000728{
Joe Hershbergerece223b2012-05-23 07:59:15 +0000729 return udp_packet_handler;
730}
731
732void net_set_udp_handler(rxhand_f *f)
733{
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500734 debug_cond(DEBUG_INT_STATE, "--- net_loop UDP handler set (%p)\n", f);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000735 if (f == NULL)
736 udp_packet_handler = dummy_handler;
737 else
738 udp_packet_handler = f;
739}
740
741rxhand_f *net_get_arp_handler(void)
742{
743 return arp_packet_handler;
744}
745
746void net_set_arp_handler(rxhand_f *f)
747{
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500748 debug_cond(DEBUG_INT_STATE, "--- net_loop ARP handler set (%p)\n", f);
Joe Hershbergerece223b2012-05-23 07:59:15 +0000749 if (f == NULL)
750 arp_packet_handler = dummy_handler;
751 else
752 arp_packet_handler = f;
wdenk2d966952002-10-31 22:12:35 +0000753}
754
Simon Glass39bccd22011-10-26 14:18:38 +0000755#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +0000756void net_set_icmp_handler(rxhand_icmp_f *f)
757{
758 packet_icmp_handler = f;
759}
Simon Glass39bccd22011-10-26 14:18:38 +0000760#endif
wdenk2d966952002-10-31 22:12:35 +0000761
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500762void net_set_timeout_handler(ulong iv, thand_f *f)
wdenk2d966952002-10-31 22:12:35 +0000763{
764 if (iv == 0) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000765 debug_cond(DEBUG_INT_STATE,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500766 "--- net_loop timeout handler cancelled\n");
767 time_handler = (thand_f *)0;
wdenk2d966952002-10-31 22:12:35 +0000768 } else {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000769 debug_cond(DEBUG_INT_STATE,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500770 "--- net_loop timeout handler set (%p)\n", f);
771 time_handler = f;
772 time_start = get_timer(0);
773 time_delta = iv * CONFIG_SYS_HZ / 1000;
wdenk2d966952002-10-31 22:12:35 +0000774 }
775}
776
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500777int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport,
Joe Hershberger206d07f2012-05-23 07:58:10 +0000778 int payload_len)
wdenk73a8b272003-06-05 19:27:42 +0000779{
wdenka3d991b2004-04-15 21:48:45 +0000780 uchar *pkt;
Joe Hershberger92146372012-05-23 07:59:08 +0000781 int eth_hdr_size;
782 int pkt_hdr_size;
wdenka3d991b2004-04-15 21:48:45 +0000783
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500784 /* make sure the net_tx_packet is initialized (net_init() was called) */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500785 assert(net_tx_packet != NULL);
786 if (net_tx_packet == NULL)
Joe Hershberger46c495d2012-05-23 07:59:22 +0000787 return -1;
788
wdenk73a8b272003-06-05 19:27:42 +0000789 /* convert to new style broadcast */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500790 if (dest.s_addr == 0)
791 dest.s_addr = 0xFFFFFFFF;
wdenk2d966952002-10-31 22:12:35 +0000792
wdenk73a8b272003-06-05 19:27:42 +0000793 /* if broadcast, make the ether address a broadcast and don't do ARP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500794 if (dest.s_addr == 0xFFFFFFFF)
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500795 ether = (uchar *)net_bcast_ethaddr;
wdenk73a8b272003-06-05 19:27:42 +0000796
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500797 pkt = (uchar *)net_tx_packet;
wdenk73a8b272003-06-05 19:27:42 +0000798
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500799 eth_hdr_size = net_set_ether(pkt, ether, PROT_IP);
Joe Hershberger92146372012-05-23 07:59:08 +0000800 pkt += eth_hdr_size;
801 net_set_udp_header(pkt, dest, dport, sport, payload_len);
802 pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE;
Robin Getz0ebf04c2009-07-23 03:01:03 -0400803
Joe Hershbergere94070c2012-05-23 07:59:24 +0000804 /* if MAC address was not discovered yet, do an ARP request */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500805 if (memcmp(ether, net_null_ethaddr, 6) == 0) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000806 debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest);
Joe Hershberger92146372012-05-23 07:59:08 +0000807
808 /* save the ip and eth addr for the packet to send after arp */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500809 net_arp_wait_packet_ip = dest;
Joe Hershberger85d25e02015-04-08 01:41:08 -0500810 arp_wait_packet_ethaddr = ether;
wdenka3d991b2004-04-15 21:48:45 +0000811
wdenk73a8b272003-06-05 19:27:42 +0000812 /* size of the waiting packet */
Joe Hershberger85d25e02015-04-08 01:41:08 -0500813 arp_wait_tx_packet_size = pkt_hdr_size + payload_len;
wdenk73a8b272003-06-05 19:27:42 +0000814
815 /* and do the ARP request */
Joe Hershberger85d25e02015-04-08 01:41:08 -0500816 arp_wait_try = 1;
817 arp_wait_timer_start = get_timer(0);
818 arp_request();
wdenk73a8b272003-06-05 19:27:42 +0000819 return 1; /* waiting */
Joe Hershberger92146372012-05-23 07:59:08 +0000820 } else {
Joe Hershberger4ef8d532012-05-23 08:01:04 +0000821 debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500822 &dest, ether);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500823 net_send_packet(net_tx_packet, pkt_hdr_size + payload_len);
Joe Hershberger92146372012-05-23 07:59:08 +0000824 return 0; /* transmitted */
wdenk73a8b272003-06-05 19:27:42 +0000825 }
wdenk73a8b272003-06-05 19:27:42 +0000826}
827
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200828#ifdef CONFIG_IP_DEFRAG
829/*
830 * This function collects fragments in a single packet, according
831 * to the algorithm in RFC815. It returns NULL or the pointer to
832 * a complete packet, in static storage
833 */
834#ifndef CONFIG_NET_MAXDEFRAG
835#define CONFIG_NET_MAXDEFRAG 16384
836#endif
837/*
838 * MAXDEFRAG, above, is chosen in the config file and is real data
839 * so we need to add the NFS overhead, which is more than TFTP.
840 * To use sizeof in the internal unnamed structures, we need a real
841 * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately).
842 * The compiler doesn't complain nor allocates the actual structure
843 */
844static struct rpc_t rpc_specimen;
845#define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply))
846
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000847#define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200848
849/*
850 * this is the packet being assembled, either data or frag control.
851 * Fragments go by 8 bytes, so this union must be 8 bytes long
852 */
853struct hole {
854 /* first_byte is address of this structure */
855 u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */
856 u16 next_hole; /* index of next (in 8-b blocks), 0 == none */
857 u16 prev_hole; /* index of prev, 0 == none */
858 u16 unused;
859};
860
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500861static struct ip_udp_hdr *__net_defragment(struct ip_udp_hdr *ip, int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200862{
Joe Hershberger48522bb2012-05-15 08:59:08 +0000863 static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200864 static u16 first_hole, total_len;
865 struct hole *payload, *thisfrag, *h, *newh;
Joe Hershberger594c26f2012-05-23 07:58:04 +0000866 struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200867 uchar *indata = (uchar *)ip;
868 int offset8, start, len, done = 0;
869 u16 ip_off = ntohs(ip->ip_off);
870
871 /* payload starts after IP header, this fragment is in there */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000872 payload = (struct hole *)(pkt_buff + IP_HDR_SIZE);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200873 offset8 = (ip_off & IP_OFFS);
874 thisfrag = payload + offset8;
875 start = offset8 * 8;
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000876 len = ntohs(ip->ip_len) - IP_HDR_SIZE;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200877
878 if (start + len > IP_MAXUDP) /* fragment extends too far */
879 return NULL;
880
881 if (!total_len || localip->ip_id != ip->ip_id) {
882 /* new (or different) packet, reset structs */
883 total_len = 0xffff;
884 payload[0].last_byte = ~0;
885 payload[0].next_hole = 0;
886 payload[0].prev_hole = 0;
887 first_hole = 0;
888 /* any IP header will work, copy the first we received */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000889 memcpy(localip, ip, IP_HDR_SIZE);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200890 }
891
892 /*
893 * What follows is the reassembly algorithm. We use the payload
894 * array as a linked list of hole descriptors, as each hole starts
895 * at a multiple of 8 bytes. However, last byte can be whatever value,
896 * so it is represented as byte count, not as 8-byte blocks.
897 */
898
899 h = payload + first_hole;
900 while (h->last_byte < start) {
901 if (!h->next_hole) {
902 /* no hole that far away */
903 return NULL;
904 }
905 h = payload + h->next_hole;
906 }
907
Fillod Stephanee397e592010-06-11 19:26:43 +0200908 /* last fragment may be 1..7 bytes, the "+7" forces acceptance */
909 if (offset8 + ((len + 7) / 8) <= h - payload) {
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200910 /* no overlap with holes (dup fragment?) */
911 return NULL;
912 }
913
914 if (!(ip_off & IP_FLAGS_MFRAG)) {
915 /* no more fragmentss: truncate this (last) hole */
916 total_len = start + len;
917 h->last_byte = start + len;
918 }
919
920 /*
921 * There is some overlap: fix the hole list. This code doesn't
922 * deal with a fragment that overlaps with two different holes
923 * (thus being a superset of a previously-received fragment).
924 */
925
Luca Ceresoli4f63acd2011-05-11 03:59:56 +0000926 if ((h >= thisfrag) && (h->last_byte <= start + len)) {
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200927 /* complete overlap with hole: remove hole */
928 if (!h->prev_hole && !h->next_hole) {
929 /* last remaining hole */
930 done = 1;
931 } else if (!h->prev_hole) {
932 /* first hole */
933 first_hole = h->next_hole;
934 payload[h->next_hole].prev_hole = 0;
935 } else if (!h->next_hole) {
936 /* last hole */
937 payload[h->prev_hole].next_hole = 0;
938 } else {
939 /* in the middle of the list */
940 payload[h->next_hole].prev_hole = h->prev_hole;
941 payload[h->prev_hole].next_hole = h->next_hole;
942 }
943
944 } else if (h->last_byte <= start + len) {
945 /* overlaps with final part of the hole: shorten this hole */
946 h->last_byte = start;
947
948 } else if (h >= thisfrag) {
949 /* overlaps with initial part of the hole: move this hole */
950 newh = thisfrag + (len / 8);
951 *newh = *h;
952 h = newh;
953 if (h->next_hole)
954 payload[h->next_hole].prev_hole = (h - payload);
955 if (h->prev_hole)
956 payload[h->prev_hole].next_hole = (h - payload);
957 else
958 first_hole = (h - payload);
959
960 } else {
961 /* fragment sits in the middle: split the hole */
962 newh = thisfrag + (len / 8);
963 *newh = *h;
964 h->last_byte = start;
965 h->next_hole = (newh - payload);
966 newh->prev_hole = (h - payload);
967 if (newh->next_hole)
968 payload[newh->next_hole].prev_hole = (newh - payload);
969 }
970
971 /* finally copy this fragment and possibly return whole packet */
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000972 memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200973 if (!done)
974 return NULL;
975
976 localip->ip_len = htons(total_len);
Joe Hershbergerc5c59df2012-05-23 07:58:05 +0000977 *lenp = total_len + IP_HDR_SIZE;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200978 return localip;
979}
980
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500981static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip,
982 int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200983{
984 u16 ip_off = ntohs(ip->ip_off);
985 if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
986 return ip; /* not a fragment */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500987 return __net_defragment(ip, lenp);
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200988}
989
990#else /* !CONFIG_IP_DEFRAG */
991
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500992static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip,
993 int *lenp)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +0200994{
995 u16 ip_off = ntohs(ip->ip_off);
996 if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
997 return ip; /* not a fragment */
998 return NULL;
999}
1000#endif
wdenka3d991b2004-04-15 21:48:45 +00001001
Simon Glass8f79bb12011-10-24 18:00:00 +00001002/**
1003 * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently
1004 * drop others.
1005 *
1006 * @parma ip IP packet containing the ICMP
1007 */
Joe Hershberger594c26f2012-05-23 07:58:04 +00001008static void receive_icmp(struct ip_udp_hdr *ip, int len,
Joe Hershberger049a95a2015-04-08 01:41:01 -05001009 struct in_addr src_ip, struct ethernet_hdr *et)
Simon Glass8f79bb12011-10-24 18:00:00 +00001010{
Joe Hershbergere0a63072012-05-23 07:58:09 +00001011 struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src;
Simon Glass8f79bb12011-10-24 18:00:00 +00001012
1013 switch (icmph->type) {
1014 case ICMP_REDIRECT:
1015 if (icmph->code != ICMP_REDIR_HOST)
1016 return;
1017 printf(" ICMP Host Redirect to %pI4 ",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001018 &icmph->un.gateway);
Simon Glass8f79bb12011-10-24 18:00:00 +00001019 break;
Simon Glass8f79bb12011-10-24 18:00:00 +00001020 default:
Joe Hershbergera36b12f2012-05-23 07:58:02 +00001021#if defined(CONFIG_CMD_PING)
1022 ping_receive(et, ip, len);
1023#endif
Simon Glass39bccd22011-10-26 14:18:38 +00001024#ifdef CONFIG_CMD_TFTPPUT
Simon Glass4793ee62011-10-24 18:00:01 +00001025 if (packet_icmp_handler)
1026 packet_icmp_handler(icmph->type, icmph->code,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001027 ntohs(ip->udp_dst), src_ip,
1028 ntohs(ip->udp_src), icmph->un.data,
1029 ntohs(ip->udp_len));
Simon Glass39bccd22011-10-26 14:18:38 +00001030#endif
Simon Glass8f79bb12011-10-24 18:00:00 +00001031 break;
1032 }
1033}
1034
Joe Hershberger2a504df2015-03-22 17:09:11 -05001035void net_process_received_packet(uchar *in_packet, int len)
wdenk2d966952002-10-31 22:12:35 +00001036{
Joe Hershbergercb487f52012-05-23 07:58:06 +00001037 struct ethernet_hdr *et;
Joe Hershberger594c26f2012-05-23 07:58:04 +00001038 struct ip_udp_hdr *ip;
Joe Hershberger049a95a2015-04-08 01:41:01 -05001039 struct in_addr dst_ip;
1040 struct in_addr src_ip;
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001041 int eth_proto;
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001042#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001043 int iscdp;
1044#endif
1045 ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
wdenk2d966952002-10-31 22:12:35 +00001046
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001047 debug_cond(DEBUG_NET_PKT, "packet received\n");
wdenka3d991b2004-04-15 21:48:45 +00001048
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001049 net_rx_packet = in_packet;
1050 net_rx_packet_len = len;
Joe Hershberger2a504df2015-03-22 17:09:11 -05001051 et = (struct ethernet_hdr *)in_packet;
wdenka3d991b2004-04-15 21:48:45 +00001052
1053 /* too small packet? */
1054 if (len < ETHER_HDR_SIZE)
1055 return;
1056
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001057#ifdef CONFIG_API
1058 if (push_packet) {
Joe Hershberger2a504df2015-03-22 17:09:11 -05001059 (*push_packet)(in_packet, len);
Rafal Jaworowskif85b6072007-12-27 18:19:02 +01001060 return;
1061 }
1062#endif
1063
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001064#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001065 /* keep track if packet is CDP */
Joe Hershberger17351882012-05-23 07:58:00 +00001066 iscdp = is_cdp_packet(et->et_dest);
wdenka3d991b2004-04-15 21:48:45 +00001067#endif
1068
Joe Hershberger4fd50552015-04-08 01:41:17 -05001069 myvlanid = ntohs(net_our_vlan);
wdenka3d991b2004-04-15 21:48:45 +00001070 if (myvlanid == (ushort)-1)
1071 myvlanid = VLAN_NONE;
Joe Hershberger4fd50552015-04-08 01:41:17 -05001072 mynvlanid = ntohs(net_native_vlan);
wdenka3d991b2004-04-15 21:48:45 +00001073 if (mynvlanid == (ushort)-1)
1074 mynvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +00001075
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001076 eth_proto = ntohs(et->et_protlen);
wdenk2d966952002-10-31 22:12:35 +00001077
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001078 if (eth_proto < 1514) {
Joe Hershbergercb487f52012-05-23 07:58:06 +00001079 struct e802_hdr *et802 = (struct e802_hdr *)et;
wdenk2d966952002-10-31 22:12:35 +00001080 /*
Joe Hershbergerda5ebe22012-05-23 07:58:11 +00001081 * Got a 802.2 packet. Check the other protocol field.
1082 * XXX VLAN over 802.2+SNAP not implemented!
wdenk2d966952002-10-31 22:12:35 +00001083 */
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001084 eth_proto = ntohs(et802->et_prot);
wdenka3d991b2004-04-15 21:48:45 +00001085
Joe Hershberger2a504df2015-03-22 17:09:11 -05001086 ip = (struct ip_udp_hdr *)(in_packet + E802_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001087 len -= E802_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001088
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001089 } else if (eth_proto != PROT_VLAN) { /* normal packet */
Joe Hershberger2a504df2015-03-22 17:09:11 -05001090 ip = (struct ip_udp_hdr *)(in_packet + ETHER_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001091 len -= ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001092
1093 } else { /* VLAN packet */
Joe Hershbergerc68cca32012-05-23 07:58:07 +00001094 struct vlan_ethernet_hdr *vet =
1095 (struct vlan_ethernet_hdr *)et;
wdenka3d991b2004-04-15 21:48:45 +00001096
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001097 debug_cond(DEBUG_NET_PKT, "VLAN packet received\n");
Robin Getz0ebf04c2009-07-23 03:01:03 -04001098
wdenka3d991b2004-04-15 21:48:45 +00001099 /* too small packet? */
1100 if (len < VLAN_ETHER_HDR_SIZE)
1101 return;
1102
1103 /* if no VLAN active */
Joe Hershberger4fd50552015-04-08 01:41:17 -05001104 if ((ntohs(net_our_vlan) & VLAN_IDMASK) == VLAN_NONE
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001105#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001106 && iscdp == 0
1107#endif
1108 )
1109 return;
1110
1111 cti = ntohs(vet->vet_tag);
1112 vlanid = cti & VLAN_IDMASK;
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001113 eth_proto = ntohs(vet->vet_type);
wdenka3d991b2004-04-15 21:48:45 +00001114
Joe Hershberger2a504df2015-03-22 17:09:11 -05001115 ip = (struct ip_udp_hdr *)(in_packet + VLAN_ETHER_HDR_SIZE);
wdenka3d991b2004-04-15 21:48:45 +00001116 len -= VLAN_ETHER_HDR_SIZE;
wdenk2d966952002-10-31 22:12:35 +00001117 }
1118
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001119 debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto);
wdenk2d966952002-10-31 22:12:35 +00001120
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001121#if defined(CONFIG_CMD_CDP)
wdenka3d991b2004-04-15 21:48:45 +00001122 if (iscdp) {
Joe Hershberger0b4c5ff2012-05-23 07:58:13 +00001123 cdp_receive((uchar *)ip, len);
wdenka3d991b2004-04-15 21:48:45 +00001124 return;
1125 }
1126#endif
1127
1128 if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
1129 if (vlanid == VLAN_NONE)
1130 vlanid = (mynvlanid & VLAN_IDMASK);
1131 /* not matched? */
1132 if (vlanid != (myvlanid & VLAN_IDMASK))
1133 return;
1134 }
1135
Joe Hershberger8d353eb2012-05-23 07:58:12 +00001136 switch (eth_proto) {
wdenk2d966952002-10-31 22:12:35 +00001137 case PROT_ARP:
Joe Hershberger85d25e02015-04-08 01:41:08 -05001138 arp_receive(et, ip, len);
wdenk289f9322005-01-12 00:15:14 +00001139 break;
wdenk2d966952002-10-31 22:12:35 +00001140
Peter Tyserbf6cb242010-09-30 11:25:48 -05001141#ifdef CONFIG_CMD_RARP
wdenk2d966952002-10-31 22:12:35 +00001142 case PROT_RARP:
Joe Hershberger8b9c5322012-05-23 07:58:03 +00001143 rarp_receive(ip, len);
wdenk2d966952002-10-31 22:12:35 +00001144 break;
Peter Tyserbf6cb242010-09-30 11:25:48 -05001145#endif
wdenk2d966952002-10-31 22:12:35 +00001146 case PROT_IP:
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001147 debug_cond(DEBUG_NET_PKT, "Got IP\n");
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001148 /* Before we start poking the header, make sure it is there */
Joe Hershberger594c26f2012-05-23 07:58:04 +00001149 if (len < IP_UDP_HDR_SIZE) {
1150 debug("len bad %d < %lu\n", len,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001151 (ulong)IP_UDP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001152 return;
1153 }
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001154 /* Check the packet length */
wdenk2d966952002-10-31 22:12:35 +00001155 if (len < ntohs(ip->ip_len)) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001156 debug("len bad %d < %d\n", len, ntohs(ip->ip_len));
wdenk2d966952002-10-31 22:12:35 +00001157 return;
1158 }
1159 len = ntohs(ip->ip_len);
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001160 debug_cond(DEBUG_NET_PKT, "len=%d, v=%02x\n",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001161 len, ip->ip_hl_v & 0xff);
Robin Getz0ebf04c2009-07-23 03:01:03 -04001162
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001163 /* Can't deal with anything except IPv4 */
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001164 if ((ip->ip_hl_v & 0xf0) != 0x40)
wdenk2d966952002-10-31 22:12:35 +00001165 return;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001166 /* Can't deal with IP options (headers != 20 bytes) */
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001167 if ((ip->ip_hl_v & 0x0f) > 0x05)
Remy Bohmer6b52cfe2008-06-03 15:48:17 +02001168 return;
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001169 /* Check the Checksum of the header */
Simon Glass0da0fcd2015-01-19 22:16:08 -07001170 if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) {
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001171 debug("checksum bad\n");
wdenk2d966952002-10-31 22:12:35 +00001172 return;
1173 }
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001174 /* If it is not for us, ignore it */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001175 dst_ip = net_read_ip(&ip->ip_dst);
1176 if (net_ip.s_addr && dst_ip.s_addr != net_ip.s_addr &&
1177 dst_ip.s_addr != 0xFFFFFFFF) {
David Updegraff53a5c422007-06-11 10:41:07 -05001178#ifdef CONFIG_MCAST_TFTP
Joe Hershberger049a95a2015-04-08 01:41:01 -05001179 if (net_mcast_addr != dst_ip)
David Updegraff53a5c422007-06-11 10:41:07 -05001180#endif
Luca Ceresolic819abe2011-05-04 02:40:46 +00001181 return;
wdenk2d966952002-10-31 22:12:35 +00001182 }
Luca Ceresoli03eb1292011-04-18 06:19:50 +00001183 /* Read source IP address for later use */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001184 src_ip = net_read_ip(&ip->ip_src);
wdenk2d966952002-10-31 22:12:35 +00001185 /*
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001186 * The function returns the unchanged packet if it's not
1187 * a fragment, and either the complete packet or NULL if
1188 * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL)
1189 */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001190 ip = net_defragment(ip, &len);
Luca Ceresoliccb9ebe2011-05-04 02:40:47 +00001191 if (!ip)
Alessandro Rubini5cfaa4e2009-08-07 13:58:56 +02001192 return;
1193 /*
wdenk2d966952002-10-31 22:12:35 +00001194 * watch for ICMP host redirects
1195 *
wdenk8bde7f72003-06-27 21:31:46 +00001196 * There is no real handler code (yet). We just watch
1197 * for ICMP host redirect messages. In case anybody
1198 * sees these messages: please contact me
1199 * (wd@denx.de), or - even better - send me the
1200 * necessary fixes :-)
wdenk2d966952002-10-31 22:12:35 +00001201 *
wdenk8bde7f72003-06-27 21:31:46 +00001202 * Note: in all cases where I have seen this so far
1203 * it was a problem with the router configuration,
1204 * for instance when a router was configured in the
1205 * BOOTP reply, but the TFTP server was on the same
1206 * subnet. So this is probably a warning that your
1207 * configuration might be wrong. But I'm not really
1208 * sure if there aren't any other situations.
Simon Glass4793ee62011-10-24 18:00:01 +00001209 *
1210 * Simon Glass <sjg@chromium.org>: We get an ICMP when
1211 * we send a tftp packet to a dead connection, or when
1212 * there is no server at the other end.
wdenk2d966952002-10-31 22:12:35 +00001213 */
1214 if (ip->ip_p == IPPROTO_ICMP) {
Simon Glass8f79bb12011-10-24 18:00:00 +00001215 receive_icmp(ip, len, src_ip, et);
1216 return;
wdenk2d966952002-10-31 22:12:35 +00001217 } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
1218 return;
1219 }
1220
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001221 debug_cond(DEBUG_DEV_PKT,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001222 "received UDP (to=%pI4, from=%pI4, len=%d)\n",
1223 &dst_ip, &src_ip, len);
Joe Hershberger4ef8d532012-05-23 08:01:04 +00001224
Stefan Roese8534bf92005-08-12 20:06:52 +02001225#ifdef CONFIG_UDP_CHECKSUM
1226 if (ip->udp_xsum != 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001227 ulong xsum;
Stefan Roese8534bf92005-08-12 20:06:52 +02001228 ushort *sumptr;
1229 ushort sumlen;
1230
1231 xsum = ip->ip_p;
1232 xsum += (ntohs(ip->udp_len));
Joe Hershberger049a95a2015-04-08 01:41:01 -05001233 xsum += (ntohl(ip->ip_src.s_addr) >> 16) & 0x0000ffff;
1234 xsum += (ntohl(ip->ip_src.s_addr) >> 0) & 0x0000ffff;
1235 xsum += (ntohl(ip->ip_dst.s_addr) >> 16) & 0x0000ffff;
1236 xsum += (ntohl(ip->ip_dst.s_addr) >> 0) & 0x0000ffff;
Stefan Roese8534bf92005-08-12 20:06:52 +02001237
1238 sumlen = ntohs(ip->udp_len);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001239 sumptr = (ushort *)&(ip->udp_src);
Stefan Roese8534bf92005-08-12 20:06:52 +02001240
1241 while (sumlen > 1) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001242 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001243
1244 sumdata = *sumptr++;
1245 xsum += ntohs(sumdata);
1246 sumlen -= 2;
1247 }
1248 if (sumlen > 0) {
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001249 ushort sumdata;
Stefan Roese8534bf92005-08-12 20:06:52 +02001250
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001251 sumdata = *(unsigned char *)sumptr;
Wolfgang Denkb2f50802005-08-12 23:43:12 +02001252 sumdata = (sumdata << 8) & 0xff00;
Stefan Roese8534bf92005-08-12 20:06:52 +02001253 xsum += sumdata;
1254 }
1255 while ((xsum >> 16) != 0) {
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001256 xsum = (xsum & 0x0000ffff) +
1257 ((xsum >> 16) & 0x0000ffff);
Stefan Roese8534bf92005-08-12 20:06:52 +02001258 }
1259 if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
Wolfgang Denk9b55a252008-07-11 01:16:00 +02001260 printf(" UDP wrong checksum %08lx %08x\n",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001261 xsum, ntohs(ip->udp_xsum));
Stefan Roese8534bf92005-08-12 20:06:52 +02001262 return;
1263 }
1264 }
1265#endif
1266
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001267#if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD)
Joe Hershberger594c26f2012-05-23 07:58:04 +00001268 nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE,
Joe Hershbergerece223b2012-05-23 07:59:15 +00001269 src_ip,
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001270 ntohs(ip->udp_dst),
Joe Hershbergerece223b2012-05-23 07:59:15 +00001271 ntohs(ip->udp_src),
1272 ntohs(ip->udp_len) - UDP_HDR_SIZE);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001273#endif
1274 /*
1275 * IP header OK. Pass the packet to the current handler.
1276 */
1277 (*udp_packet_handler)((uchar *)ip + IP_UDP_HDR_SIZE,
1278 ntohs(ip->udp_dst),
1279 src_ip,
1280 ntohs(ip->udp_src),
1281 ntohs(ip->udp_len) - UDP_HDR_SIZE);
wdenk2d966952002-10-31 22:12:35 +00001282 break;
1283 }
1284}
1285
wdenk2d966952002-10-31 22:12:35 +00001286/**********************************************************************/
1287
Simon Glasse4bf0c52011-10-24 18:00:02 +00001288static int net_check_prereq(enum proto_t protocol)
wdenk2d966952002-10-31 22:12:35 +00001289{
1290 switch (protocol) {
wdenk6e592382004-04-18 17:39:38 +00001291 /* Fall through */
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001292#if defined(CONFIG_CMD_PING)
wdenk73a8b272003-06-05 19:27:42 +00001293 case PING:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001294 if (net_ping_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001295 puts("*** ERROR: ping address not given\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001296 return 1;
wdenk6e592382004-04-18 17:39:38 +00001297 }
1298 goto common;
wdenk73a8b272003-06-05 19:27:42 +00001299#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001300#if defined(CONFIG_CMD_SNTP)
wdenkea287de2005-04-01 00:25:43 +00001301 case SNTP:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001302 if (net_ntp_server.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001303 puts("*** ERROR: NTP server address not given\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001304 return 1;
wdenkea287de2005-04-01 00:25:43 +00001305 }
1306 goto common;
1307#endif
Robin Getz1a32bf42009-07-20 14:53:54 -04001308#if defined(CONFIG_CMD_DNS)
1309 case DNS:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001310 if (net_dns_server.s_addr == 0) {
Robin Getz1a32bf42009-07-20 14:53:54 -04001311 puts("*** ERROR: DNS server address not given\n");
1312 return 1;
1313 }
1314 goto common;
1315#endif
Jon Loeliger643d1ab2007-07-09 17:45:14 -05001316#if defined(CONFIG_CMD_NFS)
wdenkcbd8a352004-02-24 02:00:03 +00001317 case NFS:
1318#endif
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001319 /* Fall through */
Simon Glasse4bf0c52011-10-24 18:00:02 +00001320 case TFTPGET:
Simon Glass1fb7cd42011-10-24 18:00:07 +00001321 case TFTPPUT:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001322 if (net_server_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001323 puts("*** ERROR: `serverip' not set\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001324 return 1;
wdenk6e592382004-04-18 17:39:38 +00001325 }
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001326#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \
1327 defined(CONFIG_CMD_DNS)
1328common:
wdenk73a8b272003-06-05 19:27:42 +00001329#endif
Simon Guinot8b6bbe12011-05-01 23:38:40 +00001330 /* Fall through */
wdenk73a8b272003-06-05 19:27:42 +00001331
Simon Guinot8b6bbe12011-05-01 23:38:40 +00001332 case NETCONS:
Luca Ceresoli7a83af02011-05-17 00:03:40 +00001333 case TFTPSRV:
Joe Hershberger049a95a2015-04-08 01:41:01 -05001334 if (net_ip.s_addr == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001335 puts("*** ERROR: `ipaddr' not set\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001336 return 1;
wdenk6e592382004-04-18 17:39:38 +00001337 }
1338 /* Fall through */
wdenk2d966952002-10-31 22:12:35 +00001339
Peter Tyserbf6cb242010-09-30 11:25:48 -05001340#ifdef CONFIG_CMD_RARP
wdenk2d966952002-10-31 22:12:35 +00001341 case RARP:
Peter Tyserbf6cb242010-09-30 11:25:48 -05001342#endif
wdenk2d966952002-10-31 22:12:35 +00001343 case BOOTP:
wdenka3d991b2004-04-15 21:48:45 +00001344 case CDP:
Peter Tyserbf6cb242010-09-30 11:25:48 -05001345 case DHCP:
Joe Hershbergerd22c3382012-05-23 08:00:12 +00001346 case LINKLOCAL:
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001347 if (memcmp(net_ethaddr, "\0\0\0\0\0\0", 6) == 0) {
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001348 int num = eth_get_dev_index();
wdenk2d966952002-10-31 22:12:35 +00001349
wdenk6e592382004-04-18 17:39:38 +00001350 switch (num) {
1351 case -1:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001352 puts("*** ERROR: No ethernet found.\n");
Luca Ceresoli92895de2011-05-04 02:40:45 +00001353 return 1;
wdenk6e592382004-04-18 17:39:38 +00001354 case 0:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001355 puts("*** ERROR: `ethaddr' not set\n");
wdenk2d966952002-10-31 22:12:35 +00001356 break;
wdenk6e592382004-04-18 17:39:38 +00001357 default:
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001358 printf("*** ERROR: `eth%daddr' not set\n",
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001359 num);
wdenk2d966952002-10-31 22:12:35 +00001360 break;
wdenk2d966952002-10-31 22:12:35 +00001361 }
wdenk6e592382004-04-18 17:39:38 +00001362
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001363 net_start_again();
Luca Ceresoli92895de2011-05-04 02:40:45 +00001364 return 2;
wdenk6e592382004-04-18 17:39:38 +00001365 }
1366 /* Fall through */
1367 default:
Luca Ceresoli92895de2011-05-04 02:40:45 +00001368 return 0;
wdenk2d966952002-10-31 22:12:35 +00001369 }
Luca Ceresoli92895de2011-05-04 02:40:45 +00001370 return 0; /* OK */
wdenk2d966952002-10-31 22:12:35 +00001371}
1372/**********************************************************************/
1373
1374int
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001375net_eth_hdr_size(void)
wdenka3d991b2004-04-15 21:48:45 +00001376{
1377 ushort myvlanid;
wdenk2d966952002-10-31 22:12:35 +00001378
Joe Hershberger4fd50552015-04-08 01:41:17 -05001379 myvlanid = ntohs(net_our_vlan);
wdenka3d991b2004-04-15 21:48:45 +00001380 if (myvlanid == (ushort)-1)
1381 myvlanid = VLAN_NONE;
1382
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001383 return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE :
1384 VLAN_ETHER_HDR_SIZE;
wdenka3d991b2004-04-15 21:48:45 +00001385}
1386
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001387int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot)
wdenk2d966952002-10-31 22:12:35 +00001388{
Joe Hershbergercb487f52012-05-23 07:58:06 +00001389 struct ethernet_hdr *et = (struct ethernet_hdr *)xet;
wdenka3d991b2004-04-15 21:48:45 +00001390 ushort myvlanid;
1391
Joe Hershberger4fd50552015-04-08 01:41:17 -05001392 myvlanid = ntohs(net_our_vlan);
wdenka3d991b2004-04-15 21:48:45 +00001393 if (myvlanid == (ushort)-1)
1394 myvlanid = VLAN_NONE;
wdenk2d966952002-10-31 22:12:35 +00001395
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001396 memcpy(et->et_dest, dest_ethaddr, 6);
1397 memcpy(et->et_src, net_ethaddr, 6);
wdenka3d991b2004-04-15 21:48:45 +00001398 if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
Luca Ceresolic819abe2011-05-04 02:40:46 +00001399 et->et_protlen = htons(prot);
wdenka3d991b2004-04-15 21:48:45 +00001400 return ETHER_HDR_SIZE;
1401 } else {
Joe Hershbergerc68cca32012-05-23 07:58:07 +00001402 struct vlan_ethernet_hdr *vet =
1403 (struct vlan_ethernet_hdr *)xet;
wdenk2d966952002-10-31 22:12:35 +00001404
wdenka3d991b2004-04-15 21:48:45 +00001405 vet->vet_vlan_type = htons(PROT_VLAN);
1406 vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
1407 vet->vet_type = htons(prot);
1408 return VLAN_ETHER_HDR_SIZE;
1409 }
1410}
wdenk2d966952002-10-31 22:12:35 +00001411
Joe Hershbergere7111012012-05-23 07:59:16 +00001412int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot)
1413{
1414 ushort protlen;
1415
1416 memcpy(et->et_dest, addr, 6);
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001417 memcpy(et->et_src, net_ethaddr, 6);
Joe Hershbergere7111012012-05-23 07:59:16 +00001418 protlen = ntohs(et->et_protlen);
1419 if (protlen == PROT_VLAN) {
1420 struct vlan_ethernet_hdr *vet =
1421 (struct vlan_ethernet_hdr *)et;
1422 vet->vet_type = htons(prot);
1423 return VLAN_ETHER_HDR_SIZE;
1424 } else if (protlen > 1514) {
1425 et->et_protlen = htons(prot);
1426 return ETHER_HDR_SIZE;
1427 } else {
1428 /* 802.2 + SNAP */
1429 struct e802_hdr *et802 = (struct e802_hdr *)et;
1430 et802->et_prot = htons(prot);
1431 return E802_HDR_SIZE;
1432 }
1433}
1434
Joe Hershberger049a95a2015-04-08 01:41:01 -05001435void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source)
wdenk2d966952002-10-31 22:12:35 +00001436{
Joe Hershberger4b11c912012-05-23 07:59:07 +00001437 struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
1438
1439 /*
1440 * Construct an IP header.
1441 */
1442 /* IP_HDR_SIZE / 4 (not including UDP) */
1443 ip->ip_hl_v = 0x45;
1444 ip->ip_tos = 0;
1445 ip->ip_len = htons(IP_HDR_SIZE);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001446 ip->ip_id = htons(net_ip_id++);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001447 ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
1448 ip->ip_ttl = 255;
1449 ip->ip_sum = 0;
1450 /* already in network byte order */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001451 net_copy_ip((void *)&ip->ip_src, &source);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001452 /* already in network byte order */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001453 net_copy_ip((void *)&ip->ip_dst, &dest);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001454}
1455
Joe Hershberger049a95a2015-04-08 01:41:01 -05001456void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport,
Joe Hershberger4b11c912012-05-23 07:59:07 +00001457 int len)
1458{
1459 struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
wdenk2d966952002-10-31 22:12:35 +00001460
1461 /*
1462 * If the data is an odd number of bytes, zero the
1463 * byte after the last byte so that the checksum
1464 * will work.
1465 */
1466 if (len & 1)
Joe Hershberger4b11c912012-05-23 07:59:07 +00001467 pkt[IP_UDP_HDR_SIZE + len] = 0;
wdenk2d966952002-10-31 22:12:35 +00001468
Joe Hershberger049a95a2015-04-08 01:41:01 -05001469 net_set_ip_header(pkt, dest, net_ip);
Joe Hershberger594c26f2012-05-23 07:58:04 +00001470 ip->ip_len = htons(IP_UDP_HDR_SIZE + len);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001471 ip->ip_p = IPPROTO_UDP;
Simon Glass0da0fcd2015-01-19 22:16:08 -07001472 ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE);
Joe Hershberger4b11c912012-05-23 07:59:07 +00001473
wdenk2d966952002-10-31 22:12:35 +00001474 ip->udp_src = htons(sport);
1475 ip->udp_dst = htons(dport);
Joe Hershberger594c26f2012-05-23 07:58:04 +00001476 ip->udp_len = htons(UDP_HDR_SIZE + len);
wdenk2d966952002-10-31 22:12:35 +00001477 ip->udp_xsum = 0;
wdenk2d966952002-10-31 22:12:35 +00001478}
1479
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001480void copy_filename(char *dst, const char *src, int size)
wdenk2d966952002-10-31 22:12:35 +00001481{
1482 if (*src && (*src == '"')) {
1483 ++src;
1484 --size;
1485 }
1486
Luca Ceresolid3c65b02011-05-04 02:40:43 +00001487 while ((--size > 0) && *src && (*src != '"'))
wdenk2d966952002-10-31 22:12:35 +00001488 *dst++ = *src++;
wdenk2d966952002-10-31 22:12:35 +00001489 *dst = '\0';
1490}
1491
Luca Ceresoli3e38e422011-05-11 03:59:54 +00001492#if defined(CONFIG_CMD_NFS) || \
1493 defined(CONFIG_CMD_SNTP) || \
1494 defined(CONFIG_CMD_DNS)
Robin Getz1a32bf42009-07-20 14:53:54 -04001495/*
Robin Getz97399462010-03-08 14:07:00 -05001496 * make port a little random (1024-17407)
1497 * This keeps the math somewhat trivial to compute, and seems to work with
1498 * all supported protocols/clients/servers
Robin Getz1a32bf42009-07-20 14:53:54 -04001499 */
1500unsigned int random_port(void)
1501{
Robin Getz97399462010-03-08 14:07:00 -05001502 return 1024 + (get_timer(0) % 0x4000);
Robin Getz1a32bf42009-07-20 14:53:54 -04001503}
1504#endif
1505
Joe Hershberger049a95a2015-04-08 01:41:01 -05001506void ip_to_string(struct in_addr x, char *s)
wdenk2d966952002-10-31 22:12:35 +00001507{
Joe Hershberger049a95a2015-04-08 01:41:01 -05001508 x.s_addr = ntohl(x.s_addr);
Luca Ceresoli4f63acd2011-05-11 03:59:56 +00001509 sprintf(s, "%d.%d.%d.%d",
Joe Hershberger049a95a2015-04-08 01:41:01 -05001510 (int) ((x.s_addr >> 24) & 0xff),
1511 (int) ((x.s_addr >> 16) & 0xff),
1512 (int) ((x.s_addr >> 8) & 0xff),
1513 (int) ((x.s_addr >> 0) & 0xff)
wdenk6e592382004-04-18 17:39:38 +00001514 );
wdenk2d966952002-10-31 22:12:35 +00001515}
1516
Joe Hershberger4fd50552015-04-08 01:41:17 -05001517void vlan_to_string(ushort x, char *s)
wdenka3d991b2004-04-15 21:48:45 +00001518{
1519 x = ntohs(x);
1520
1521 if (x == (ushort)-1)
1522 x = VLAN_NONE;
1523
1524 if (x == VLAN_NONE)
1525 strcpy(s, "none");
1526 else
1527 sprintf(s, "%d", x & VLAN_IDMASK);
1528}
1529
Joe Hershberger4fd50552015-04-08 01:41:17 -05001530ushort string_to_vlan(const char *s)
wdenka3d991b2004-04-15 21:48:45 +00001531{
1532 ushort id;
1533
1534 if (s == NULL)
wdenkb9711de2004-04-25 13:18:40 +00001535 return htons(VLAN_NONE);
wdenka3d991b2004-04-15 21:48:45 +00001536
1537 if (*s < '0' || *s > '9')
1538 id = VLAN_NONE;
1539 else
1540 id = (ushort)simple_strtoul(s, NULL, 10);
1541
wdenkb9711de2004-04-25 13:18:40 +00001542 return htons(id);
wdenka3d991b2004-04-15 21:48:45 +00001543}
1544
Joe Hershberger4fd50552015-04-08 01:41:17 -05001545ushort getenv_vlan(char *var)
wdenka3d991b2004-04-15 21:48:45 +00001546{
Joe Hershberger4fd50552015-04-08 01:41:17 -05001547 return string_to_vlan(getenv(var));
wdenka3d991b2004-04-15 21:48:45 +00001548}