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2d966958 WD |
1 | /* |
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 | |
2ea91039 | 9 | * SPDX-License-Identifier: GPL-2.0 |
2d966958 WD |
10 | */ |
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 | * | |
d22c338e JH |
27 | * LINK_LOCAL: |
28 | * | |
29 | * Prerequisites: - own ethernet address | |
30 | * We want: - own IP address | |
31 | * Next step: ARP | |
32 | * | |
2d966958 WD |
33 | * 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 | * | |
b2f50807 WD |
50 | * Prerequisites: - own ethernet address |
51 | * We want: - IP, Netmask, ServerIP, Gateway IP | |
52 | * - bootfilename, lease time | |
53 | * Next step: - TFTP | |
2d966958 WD |
54 | * |
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 | |
cbd8a35c WD |
65 | * |
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 | |
ea287deb WD |
74 | * |
75 | * SNTP: | |
76 | * | |
b2f50807 | 77 | * Prerequisites: - own ethernet address |
ea287deb WD |
78 | * - own IP address |
79 | * We want: - network time | |
80 | * Next step: none | |
2d966958 WD |
81 | */ |
82 | ||
83 | ||
84 | #include <common.h> | |
2d966958 | 85 | #include <command.h> |
a9f51c9b | 86 | #include <environment.h> |
2d966958 | 87 | #include <net.h> |
4545f4e6 | 88 | #if defined(CONFIG_STATUS_LED) |
fc3e2165 | 89 | #include <miiphy.h> |
4545f4e6 | 90 | #include <status_led.h> |
fc3e2165 | 91 | #endif |
4545f4e6 JH |
92 | #include <watchdog.h> |
93 | #include <linux/compiler.h> | |
94 | #include "arp.h" | |
95 | #include "bootp.h" | |
f575ae1f | 96 | #include "cdp.h" |
1a32bf41 RG |
97 | #if defined(CONFIG_CMD_DNS) |
98 | #include "dns.h" | |
99 | #endif | |
d22c338e | 100 | #include "link_local.h" |
4545f4e6 | 101 | #include "nfs.h" |
a36b12f9 | 102 | #include "ping.h" |
4545f4e6 JH |
103 | #include "rarp.h" |
104 | #if defined(CONFIG_CMD_SNTP) | |
105 | #include "sntp.h" | |
106 | #endif | |
107 | #include "tftp.h" | |
2d966958 | 108 | |
d87080b7 WD |
109 | DECLARE_GLOBAL_DATA_PTR; |
110 | ||
2d966958 WD |
111 | /** BOOTP EXTENTIONS **/ |
112 | ||
3e38e429 | 113 | /* Our subnet mask (0=unknown) */ |
c586ce6e | 114 | IPaddr_t NetOurSubnetMask; |
3e38e429 | 115 | /* Our gateways IP address */ |
c586ce6e | 116 | IPaddr_t NetOurGatewayIP; |
3e38e429 | 117 | /* Our DNS IP address */ |
c586ce6e | 118 | IPaddr_t NetOurDNSIP; |
1fe80d79 | 119 | #if defined(CONFIG_BOOTP_DNS2) |
3e38e429 | 120 | /* Our 2nd DNS IP address */ |
c586ce6e | 121 | IPaddr_t NetOurDNS2IP; |
3e38e429 LC |
122 | #endif |
123 | /* Our NIS domain */ | |
c586ce6e | 124 | char NetOurNISDomain[32] = {0,}; |
3e38e429 | 125 | /* Our hostname */ |
c586ce6e | 126 | char NetOurHostName[32] = {0,}; |
3e38e429 | 127 | /* Our bootpath */ |
c586ce6e | 128 | char NetOurRootPath[64] = {0,}; |
3e38e429 | 129 | /* Our bootfile size in blocks */ |
c586ce6e | 130 | ushort NetBootFileSize; |
2d966958 | 131 | |
53a5c424 DU |
132 | #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */ |
133 | IPaddr_t Mcast_addr; | |
134 | #endif | |
135 | ||
2d966958 WD |
136 | /** END OF BOOTP EXTENTIONS **/ |
137 | ||
3e38e429 LC |
138 | /* The actual transferred size of the bootfile (in bytes) */ |
139 | ulong NetBootFileXferSize; | |
140 | /* Our ethernet address */ | |
141 | uchar NetOurEther[6]; | |
142 | /* Boot server enet address */ | |
c586ce6e | 143 | uchar NetServerEther[6]; |
3e38e429 LC |
144 | /* Our IP addr (0 = unknown) */ |
145 | IPaddr_t NetOurIP; | |
146 | /* Server IP addr (0 = unknown) */ | |
147 | IPaddr_t NetServerIP; | |
148 | /* Current receive packet */ | |
db288a96 | 149 | uchar *NetRxPacket; |
3e38e429 LC |
150 | /* Current rx packet length */ |
151 | int NetRxPacketLen; | |
152 | /* IP packet ID */ | |
153 | unsigned NetIPID; | |
154 | /* Ethernet bcast address */ | |
c586ce6e LC |
155 | uchar NetBcastAddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
156 | uchar NetEtherNullAddr[6]; | |
f85b6071 | 157 | #ifdef CONFIG_API |
db288a96 | 158 | void (*push_packet)(void *, int len) = 0; |
f85b6071 | 159 | #endif |
3e38e429 | 160 | /* Network loop state */ |
22f6e99d | 161 | enum net_loop_state net_state; |
3e38e429 | 162 | /* Tried all network devices */ |
c586ce6e | 163 | int NetRestartWrap; |
3e38e429 | 164 | /* Network loop restarted */ |
c586ce6e | 165 | static int NetRestarted; |
3e38e429 | 166 | /* At least one device configured */ |
c586ce6e | 167 | static int NetDevExists; |
2d966958 | 168 | |
6e592385 | 169 | /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */ |
3e38e429 LC |
170 | /* default is without VLAN */ |
171 | ushort NetOurVLAN = 0xFFFF; | |
172 | /* ditto */ | |
173 | ushort NetOurNativeVLAN = 0xFFFF; | |
a3d991bd | 174 | |
3e38e429 LC |
175 | /* Boot File name */ |
176 | char BootFile[128]; | |
2d966958 | 177 | |
643d1ab2 | 178 | #if defined(CONFIG_CMD_SNTP) |
3e38e429 LC |
179 | /* NTP server IP address */ |
180 | IPaddr_t NetNtpServerIP; | |
181 | /* offset time from UTC */ | |
c586ce6e | 182 | int NetTimeOffset; |
ea287deb WD |
183 | #endif |
184 | ||
06370590 | 185 | static uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
2a504df0 JH |
186 | #ifdef CONFIG_DM_ETH |
187 | /* Receive packets */ | |
188 | uchar *net_rx_packets[PKTBUFSRX]; | |
189 | #else | |
3e38e429 | 190 | /* Receive packet */ |
db288a96 | 191 | uchar *NetRxPackets[PKTBUFSRX]; |
2a504df0 | 192 | #endif |
ece223b5 JH |
193 | /* Current UDP RX packet handler */ |
194 | static rxhand_f *udp_packet_handler; | |
195 | /* Current ARP RX packet handler */ | |
196 | static rxhand_f *arp_packet_handler; | |
39bccd21 | 197 | #ifdef CONFIG_CMD_TFTPPUT |
ece223b5 JH |
198 | /* Current ICMP rx handler */ |
199 | static rxhand_icmp_f *packet_icmp_handler; | |
39bccd21 | 200 | #endif |
3e38e429 LC |
201 | /* Current timeout handler */ |
202 | static thand_f *timeHandler; | |
203 | /* Time base value */ | |
204 | static ulong timeStart; | |
205 | /* Current timeout value */ | |
206 | static ulong timeDelta; | |
207 | /* THE transmit packet */ | |
db288a96 | 208 | uchar *NetTxPacket; |
2d966958 | 209 | |
e4bf0c5c | 210 | static int net_check_prereq(enum proto_t protocol); |
2d966958 | 211 | |
67b96e87 RB |
212 | static int NetTryCount; |
213 | ||
b63056d6 JL |
214 | int __maybe_unused net_busy_flag; |
215 | ||
73a8b27c WD |
216 | /**********************************************************************/ |
217 | ||
a9f51c9b JH |
218 | static int on_bootfile(const char *name, const char *value, enum env_op op, |
219 | int flags) | |
220 | { | |
221 | switch (op) { | |
222 | case env_op_create: | |
223 | case env_op_overwrite: | |
224 | copy_filename(BootFile, value, sizeof(BootFile)); | |
225 | break; | |
226 | default: | |
227 | break; | |
228 | } | |
229 | ||
230 | return 0; | |
231 | } | |
232 | U_BOOT_ENV_CALLBACK(bootfile, on_bootfile); | |
233 | ||
e4a3d57d SG |
234 | /* |
235 | * Check if autoload is enabled. If so, use either NFS or TFTP to download | |
236 | * the boot file. | |
237 | */ | |
238 | void net_auto_load(void) | |
239 | { | |
ec8a252c | 240 | #if defined(CONFIG_CMD_NFS) |
e4a3d57d SG |
241 | const char *s = getenv("autoload"); |
242 | ||
ec8a252c JH |
243 | if (s != NULL && strcmp(s, "NFS") == 0) { |
244 | /* | |
245 | * Use NFS to load the bootfile. | |
246 | */ | |
247 | NfsStart(); | |
248 | return; | |
249 | } | |
e4a3d57d | 250 | #endif |
ec8a252c JH |
251 | if (getenv_yesno("autoload") == 0) { |
252 | /* | |
253 | * Just use BOOTP/RARP to configure system; | |
254 | * Do not use TFTP to load the bootfile. | |
255 | */ | |
256 | net_set_state(NETLOOP_SUCCESS); | |
257 | return; | |
e4a3d57d SG |
258 | } |
259 | TftpStart(TFTPGET); | |
260 | } | |
261 | ||
cb1c9911 | 262 | static void NetInitLoop(void) |
2f70c49e | 263 | { |
c586ce6e | 264 | static int env_changed_id; |
4f63acd0 | 265 | int env_id = get_env_id(); |
2f70c49e HS |
266 | |
267 | /* update only when the environment has changed */ | |
3c172c4f | 268 | if (env_changed_id != env_id) { |
23a70bf9 | 269 | NetOurIP = getenv_IPaddr("ipaddr"); |
4f63acd0 LC |
270 | NetOurGatewayIP = getenv_IPaddr("gatewayip"); |
271 | NetOurSubnetMask = getenv_IPaddr("netmask"); | |
272 | NetServerIP = getenv_IPaddr("serverip"); | |
2f70c49e | 273 | NetOurNativeVLAN = getenv_VLAN("nvlan"); |
3c172c4f | 274 | NetOurVLAN = getenv_VLAN("vlan"); |
1a32bf41 RG |
275 | #if defined(CONFIG_CMD_DNS) |
276 | NetOurDNSIP = getenv_IPaddr("dnsip"); | |
277 | #endif | |
3c172c4f | 278 | env_changed_id = env_id; |
2f70c49e | 279 | } |
7315cfd9 | 280 | if (eth_get_dev()) |
8b2c9a71 | 281 | memcpy(NetOurEther, eth_get_ethaddr(), 6); |
3c172c4f | 282 | |
da95427c | 283 | return; |
2f70c49e HS |
284 | } |
285 | ||
ece223b5 JH |
286 | static void net_clear_handlers(void) |
287 | { | |
288 | net_set_udp_handler(NULL); | |
289 | net_set_arp_handler(NULL); | |
290 | NetSetTimeout(0, NULL); | |
291 | } | |
292 | ||
293 | static void net_cleanup_loop(void) | |
294 | { | |
295 | net_clear_handlers(); | |
296 | } | |
297 | ||
46c495d5 JH |
298 | void net_init(void) |
299 | { | |
300 | static int first_call = 1; | |
301 | ||
302 | if (first_call) { | |
303 | /* | |
304 | * Setup packet buffers, aligned correctly. | |
305 | */ | |
306 | int i; | |
307 | ||
308 | NetTxPacket = &PktBuf[0] + (PKTALIGN - 1); | |
309 | NetTxPacket -= (ulong)NetTxPacket % PKTALIGN; | |
2a504df0 JH |
310 | #ifdef CONFIG_DM_ETH |
311 | for (i = 0; i < PKTBUFSRX; i++) { | |
312 | net_rx_packets[i] = NetTxPacket + (i + 1) * | |
313 | PKTSIZE_ALIGN; | |
314 | } | |
315 | #else | |
46c495d5 JH |
316 | for (i = 0; i < PKTBUFSRX; i++) |
317 | NetRxPackets[i] = NetTxPacket + (i + 1) * PKTSIZE_ALIGN; | |
2a504df0 | 318 | #endif |
46c495d5 JH |
319 | ArpInit(); |
320 | net_clear_handlers(); | |
321 | ||
322 | /* Only need to setup buffer pointers once. */ | |
323 | first_call = 0; | |
324 | } | |
325 | ||
326 | NetInitLoop(); | |
327 | } | |
328 | ||
2d966958 WD |
329 | /**********************************************************************/ |
330 | /* | |
331 | * Main network processing loop. | |
332 | */ | |
333 | ||
e4bf0c5c | 334 | int NetLoop(enum proto_t protocol) |
2d966958 | 335 | { |
4793ee65 | 336 | int ret = -1; |
2d966958 | 337 | |
2d966958 WD |
338 | NetRestarted = 0; |
339 | NetDevExists = 0; | |
67b96e87 | 340 | NetTryCount = 1; |
4ef8d53c | 341 | debug_cond(DEBUG_INT_STATE, "--- NetLoop Entry\n"); |
73a8b27c | 342 | |
573f14fe | 343 | bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start"); |
46c495d5 | 344 | net_init(); |
f8be7d65 | 345 | if (eth_is_on_demand_init() || protocol != NETCONS) { |
b1bf6f2c | 346 | eth_halt(); |
f8be7d65 | 347 | eth_set_current(); |
d2eaec60 | 348 | if (eth_init() < 0) { |
f8be7d65 JH |
349 | eth_halt(); |
350 | return -1; | |
351 | } | |
352 | } else | |
d2eaec60 | 353 | eth_init_state_only(); |
2d966958 WD |
354 | |
355 | restart: | |
b63056d6 JL |
356 | #ifdef CONFIG_USB_KEYBOARD |
357 | net_busy_flag = 0; | |
358 | #endif | |
22f6e99d | 359 | net_set_state(NETLOOP_CONTINUE); |
2d966958 WD |
360 | |
361 | /* | |
362 | * Start the ball rolling with the given start function. From | |
363 | * here on, this code is a state machine driven by received | |
364 | * packets and timer events. | |
365 | */ | |
4ef8d53c | 366 | debug_cond(DEBUG_INT_STATE, "--- NetLoop Init\n"); |
cb1c9911 | 367 | NetInitLoop(); |
2d966958 | 368 | |
4f63acd0 | 369 | switch (net_check_prereq(protocol)) { |
2d966958 WD |
370 | case 1: |
371 | /* network not configured */ | |
b1bf6f2c | 372 | eth_halt(); |
92895de9 | 373 | return -1; |
2d966958 | 374 | |
2d966958 WD |
375 | case 2: |
376 | /* network device not configured */ | |
377 | break; | |
2d966958 WD |
378 | |
379 | case 0: | |
2d966958 | 380 | NetDevExists = 1; |
e4bf0c5c | 381 | NetBootFileXferSize = 0; |
2d966958 | 382 | switch (protocol) { |
e4bf0c5c | 383 | case TFTPGET: |
1fb7cd49 SG |
384 | #ifdef CONFIG_CMD_TFTPPUT |
385 | case TFTPPUT: | |
386 | #endif | |
2d966958 | 387 | /* always use ARP to get server ethernet address */ |
e4bf0c5c | 388 | TftpStart(protocol); |
2d966958 | 389 | break; |
7a83af07 LC |
390 | #ifdef CONFIG_CMD_TFTPSRV |
391 | case TFTPSRV: | |
392 | TftpStartServer(); | |
393 | break; | |
394 | #endif | |
643d1ab2 | 395 | #if defined(CONFIG_CMD_DHCP) |
2d966958 | 396 | case DHCP: |
f59be6e8 | 397 | BootpReset(); |
09133f85 | 398 | NetOurIP = 0; |
2d966958 WD |
399 | DhcpRequest(); /* Basically same as BOOTP */ |
400 | break; | |
610f2e9c | 401 | #endif |
2d966958 WD |
402 | |
403 | case BOOTP: | |
f59be6e8 | 404 | BootpReset(); |
09133f85 | 405 | NetOurIP = 0; |
4f63acd0 | 406 | BootpRequest(); |
2d966958 WD |
407 | break; |
408 | ||
bf6cb247 | 409 | #if defined(CONFIG_CMD_RARP) |
2d966958 WD |
410 | case RARP: |
411 | RarpTry = 0; | |
09133f85 | 412 | NetOurIP = 0; |
4f63acd0 | 413 | RarpRequest(); |
2d966958 | 414 | break; |
bf6cb247 | 415 | #endif |
643d1ab2 | 416 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 417 | case PING: |
a36b12f9 | 418 | ping_start(); |
73a8b27c | 419 | break; |
cbd8a35c | 420 | #endif |
643d1ab2 | 421 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c WD |
422 | case NFS: |
423 | NfsStart(); | |
424 | break; | |
a3d991bd | 425 | #endif |
643d1ab2 | 426 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
427 | case CDP: |
428 | CDPStart(); | |
429 | break; | |
68ceb29e | 430 | #endif |
1f9ce306 | 431 | #if defined (CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD) |
68ceb29e WD |
432 | case NETCONS: |
433 | NcStart(); | |
434 | break; | |
ea287deb | 435 | #endif |
643d1ab2 | 436 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
437 | case SNTP: |
438 | SntpStart(); | |
439 | break; | |
1a32bf41 RG |
440 | #endif |
441 | #if defined(CONFIG_CMD_DNS) | |
442 | case DNS: | |
443 | DnsStart(); | |
444 | break; | |
d22c338e JH |
445 | #endif |
446 | #if defined(CONFIG_CMD_LINK_LOCAL) | |
447 | case LINKLOCAL: | |
448 | link_local_start(); | |
449 | break; | |
73a8b27c | 450 | #endif |
2d966958 WD |
451 | default: |
452 | break; | |
453 | } | |
454 | ||
2d966958 WD |
455 | break; |
456 | } | |
457 | ||
643d1ab2 | 458 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
3e38e429 LC |
459 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
460 | defined(CONFIG_STATUS_LED) && \ | |
461 | defined(STATUS_LED_RED) | |
fc3e2165 | 462 | /* |
42d1f039 | 463 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 464 | */ |
d3c65b01 | 465 | if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) |
4f63acd0 | 466 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
d3c65b01 | 467 | else |
4f63acd0 | 468 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
6d0f6bcf | 469 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 470 | #endif /* CONFIG_MII, ... */ |
b63056d6 JL |
471 | #ifdef CONFIG_USB_KEYBOARD |
472 | net_busy_flag = 1; | |
473 | #endif | |
2d966958 WD |
474 | |
475 | /* | |
476 | * Main packet reception loop. Loop receiving packets until | |
22f6e99d | 477 | * someone sets `net_state' to a state that terminates. |
2d966958 WD |
478 | */ |
479 | for (;;) { | |
480 | WATCHDOG_RESET(); | |
481 | #ifdef CONFIG_SHOW_ACTIVITY | |
48522bb5 | 482 | show_activity(1); |
2d966958 WD |
483 | #endif |
484 | /* | |
485 | * Check the ethernet for a new packet. The ethernet | |
486 | * receive routine will process it. | |
487 | */ | |
40cb90ee | 488 | eth_rx(); |
2d966958 WD |
489 | |
490 | /* | |
491 | * Abort if ctrl-c was pressed. | |
492 | */ | |
493 | if (ctrlc()) { | |
e94070c4 JH |
494 | /* cancel any ARP that may not have completed */ |
495 | NetArpWaitPacketIP = 0; | |
496 | ||
ece223b5 | 497 | net_cleanup_loop(); |
8bde7f77 | 498 | eth_halt(); |
f8be7d65 JH |
499 | /* Invalidate the last protocol */ |
500 | eth_set_last_protocol(BOOTP); | |
501 | ||
4f63acd0 | 502 | puts("\nAbort\n"); |
4ef8d53c JH |
503 | /* include a debug print as well incase the debug |
504 | messages are directed to stderr */ | |
505 | debug_cond(DEBUG_INT_STATE, "--- NetLoop Abort!\n"); | |
4793ee65 | 506 | goto done; |
2d966958 WD |
507 | } |
508 | ||
73a8b27c | 509 | ArpTimeoutCheck(); |
2d966958 WD |
510 | |
511 | /* | |
512 | * Check for a timeout, and run the timeout handler | |
513 | * if we have one. | |
514 | */ | |
e0ac62d7 | 515 | if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) { |
2d966958 WD |
516 | thand_f *x; |
517 | ||
643d1ab2 | 518 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
4f63acd0 LC |
519 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
520 | defined(CONFIG_STATUS_LED) && \ | |
521 | defined(STATUS_LED_RED) | |
fc3e2165 | 522 | /* |
42d1f039 | 523 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 524 | */ |
4f63acd0 | 525 | if (miiphy_link(eth_get_dev()->name, |
3e38e429 | 526 | CONFIG_SYS_FAULT_MII_ADDR)) { |
4f63acd0 | 527 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
fc3e2165 | 528 | } else { |
4f63acd0 | 529 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
fc3e2165 | 530 | } |
4f63acd0 | 531 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 532 | #endif /* CONFIG_MII, ... */ |
4ef8d53c | 533 | debug_cond(DEBUG_INT_STATE, "--- NetLoop timeout\n"); |
2d966958 WD |
534 | x = timeHandler; |
535 | timeHandler = (thand_f *)0; | |
536 | (*x)(); | |
537 | } | |
538 | ||
5c421331 JH |
539 | if (net_state == NETLOOP_FAIL) |
540 | NetStartAgain(); | |
2d966958 | 541 | |
22f6e99d | 542 | switch (net_state) { |
2d966958 WD |
543 | |
544 | case NETLOOP_RESTART: | |
2d966958 | 545 | NetRestarted = 1; |
2d966958 WD |
546 | goto restart; |
547 | ||
548 | case NETLOOP_SUCCESS: | |
ece223b5 | 549 | net_cleanup_loop(); |
2d966958 | 550 | if (NetBootFileXferSize > 0) { |
2d966958 WD |
551 | printf("Bytes transferred = %ld (%lx hex)\n", |
552 | NetBootFileXferSize, | |
553 | NetBootFileXferSize); | |
978226da SG |
554 | setenv_hex("filesize", NetBootFileXferSize); |
555 | setenv_hex("fileaddr", load_addr); | |
2d966958 | 556 | } |
f8be7d65 JH |
557 | if (protocol != NETCONS) |
558 | eth_halt(); | |
559 | else | |
560 | eth_halt_state_only(); | |
561 | ||
562 | eth_set_last_protocol(protocol); | |
563 | ||
4793ee65 | 564 | ret = NetBootFileXferSize; |
4ef8d53c | 565 | debug_cond(DEBUG_INT_STATE, "--- NetLoop Success!\n"); |
4793ee65 | 566 | goto done; |
2d966958 WD |
567 | |
568 | case NETLOOP_FAIL: | |
ece223b5 | 569 | net_cleanup_loop(); |
f8be7d65 JH |
570 | /* Invalidate the last protocol */ |
571 | eth_set_last_protocol(BOOTP); | |
4ef8d53c | 572 | debug_cond(DEBUG_INT_STATE, "--- NetLoop Fail!\n"); |
4793ee65 | 573 | goto done; |
22f6e99d JH |
574 | |
575 | case NETLOOP_CONTINUE: | |
576 | continue; | |
2d966958 WD |
577 | } |
578 | } | |
4793ee65 SG |
579 | |
580 | done: | |
b63056d6 JL |
581 | #ifdef CONFIG_USB_KEYBOARD |
582 | net_busy_flag = 0; | |
583 | #endif | |
39bccd21 | 584 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 | 585 | /* Clear out the handlers */ |
ece223b5 | 586 | net_set_udp_handler(NULL); |
4793ee65 | 587 | net_set_icmp_handler(NULL); |
39bccd21 | 588 | #endif |
4793ee65 | 589 | return ret; |
2d966958 WD |
590 | } |
591 | ||
592 | /**********************************************************************/ | |
593 | ||
594 | static void | |
595 | startAgainTimeout(void) | |
596 | { | |
22f6e99d | 597 | net_set_state(NETLOOP_RESTART); |
2d966958 WD |
598 | } |
599 | ||
4f63acd0 | 600 | void NetStartAgain(void) |
2d966958 | 601 | { |
6e592385 | 602 | char *nretry; |
67b96e87 RB |
603 | int retry_forever = 0; |
604 | unsigned long retrycnt = 0; | |
605 | ||
606 | nretry = getenv("netretry"); | |
607 | if (nretry) { | |
608 | if (!strcmp(nretry, "yes")) | |
609 | retry_forever = 1; | |
610 | else if (!strcmp(nretry, "no")) | |
611 | retrycnt = 0; | |
612 | else if (!strcmp(nretry, "once")) | |
613 | retrycnt = 1; | |
614 | else | |
615 | retrycnt = simple_strtoul(nretry, NULL, 0); | |
5c421331 JH |
616 | } else { |
617 | retrycnt = 0; | |
618 | retry_forever = 0; | |
619 | } | |
67b96e87 RB |
620 | |
621 | if ((!retry_forever) && (NetTryCount >= retrycnt)) { | |
622 | eth_halt(); | |
22f6e99d | 623 | net_set_state(NETLOOP_FAIL); |
a3d991bd WD |
624 | return; |
625 | } | |
67b96e87 RB |
626 | |
627 | NetTryCount++; | |
628 | ||
4f63acd0 | 629 | eth_halt(); |
8b0c5c12 | 630 | #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER) |
4f63acd0 | 631 | eth_try_another(!NetRestarted); |
8b0c5c12 | 632 | #endif |
d2eaec60 | 633 | eth_init(); |
6e592385 | 634 | if (NetRestartWrap) { |
2d966958 | 635 | NetRestartWrap = 0; |
67b96e87 | 636 | if (NetDevExists) { |
4f63acd0 | 637 | NetSetTimeout(10000UL, startAgainTimeout); |
ece223b5 | 638 | net_set_udp_handler(NULL); |
6e592385 | 639 | } else { |
22f6e99d | 640 | net_set_state(NETLOOP_FAIL); |
2d966958 | 641 | } |
6e592385 | 642 | } else { |
22f6e99d | 643 | net_set_state(NETLOOP_RESTART); |
2d966958 | 644 | } |
2d966958 WD |
645 | } |
646 | ||
647 | /**********************************************************************/ | |
648 | /* | |
649 | * Miscelaneous bits. | |
650 | */ | |
651 | ||
ece223b5 JH |
652 | static void dummy_handler(uchar *pkt, unsigned dport, |
653 | IPaddr_t sip, unsigned sport, | |
654 | unsigned len) | |
d280d3f4 | 655 | { |
d280d3f4 JH |
656 | } |
657 | ||
ece223b5 JH |
658 | rxhand_f *net_get_udp_handler(void) |
659 | { | |
660 | return udp_packet_handler; | |
661 | } | |
d280d3f4 | 662 | |
ece223b5 JH |
663 | void net_set_udp_handler(rxhand_f *f) |
664 | { | |
4ef8d53c | 665 | debug_cond(DEBUG_INT_STATE, "--- NetLoop UDP handler set (%p)\n", f); |
ece223b5 JH |
666 | if (f == NULL) |
667 | udp_packet_handler = dummy_handler; | |
668 | else | |
669 | udp_packet_handler = f; | |
670 | } | |
671 | ||
672 | rxhand_f *net_get_arp_handler(void) | |
2d966958 | 673 | { |
ece223b5 JH |
674 | return arp_packet_handler; |
675 | } | |
676 | ||
677 | void net_set_arp_handler(rxhand_f *f) | |
678 | { | |
4ef8d53c | 679 | debug_cond(DEBUG_INT_STATE, "--- NetLoop ARP handler set (%p)\n", f); |
ece223b5 JH |
680 | if (f == NULL) |
681 | arp_packet_handler = dummy_handler; | |
682 | else | |
683 | arp_packet_handler = f; | |
2d966958 WD |
684 | } |
685 | ||
39bccd21 | 686 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
687 | void net_set_icmp_handler(rxhand_icmp_f *f) |
688 | { | |
689 | packet_icmp_handler = f; | |
690 | } | |
39bccd21 | 691 | #endif |
2d966958 WD |
692 | |
693 | void | |
6b147d11 | 694 | NetSetTimeout(ulong iv, thand_f *f) |
2d966958 WD |
695 | { |
696 | if (iv == 0) { | |
4ef8d53c JH |
697 | debug_cond(DEBUG_INT_STATE, |
698 | "--- NetLoop timeout handler cancelled\n"); | |
2d966958 WD |
699 | timeHandler = (thand_f *)0; |
700 | } else { | |
4ef8d53c JH |
701 | debug_cond(DEBUG_INT_STATE, |
702 | "--- NetLoop timeout handler set (%p)\n", f); | |
2d966958 | 703 | timeHandler = f; |
e0ac62d7 | 704 | timeStart = get_timer(0); |
1389f98f | 705 | timeDelta = iv * CONFIG_SYS_HZ / 1000; |
2d966958 WD |
706 | } |
707 | } | |
708 | ||
206d07fd JH |
709 | int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, |
710 | int payload_len) | |
73a8b27c | 711 | { |
a3d991bd | 712 | uchar *pkt; |
9214637a JH |
713 | int eth_hdr_size; |
714 | int pkt_hdr_size; | |
a3d991bd | 715 | |
46c495d5 JH |
716 | /* make sure the NetTxPacket is initialized (NetInit() was called) */ |
717 | assert(NetTxPacket != NULL); | |
718 | if (NetTxPacket == NULL) | |
719 | return -1; | |
720 | ||
73a8b27c WD |
721 | /* convert to new style broadcast */ |
722 | if (dest == 0) | |
723 | dest = 0xFFFFFFFF; | |
724 | ||
725 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
726 | if (dest == 0xFFFFFFFF) | |
727 | ether = NetBcastAddr; | |
728 | ||
e94070c4 | 729 | pkt = (uchar *)NetTxPacket; |
9214637a JH |
730 | |
731 | eth_hdr_size = NetSetEther(pkt, ether, PROT_IP); | |
732 | pkt += eth_hdr_size; | |
733 | net_set_udp_header(pkt, dest, dport, sport, payload_len); | |
734 | pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE; | |
73a8b27c | 735 | |
e94070c4 JH |
736 | /* if MAC address was not discovered yet, do an ARP request */ |
737 | if (memcmp(ether, NetEtherNullAddr, 6) == 0) { | |
4ef8d53c | 738 | debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest); |
0ebf04c6 | 739 | |
9214637a | 740 | /* save the ip and eth addr for the packet to send after arp */ |
73a8b27c WD |
741 | NetArpWaitPacketIP = dest; |
742 | NetArpWaitPacketMAC = ether; | |
a3d991bd | 743 | |
73a8b27c | 744 | /* size of the waiting packet */ |
9214637a | 745 | NetArpWaitTxPacketSize = pkt_hdr_size + payload_len; |
73a8b27c WD |
746 | |
747 | /* and do the ARP request */ | |
748 | NetArpWaitTry = 1; | |
749 | NetArpWaitTimerStart = get_timer(0); | |
750 | ArpRequest(); | |
751 | return 1; /* waiting */ | |
9214637a | 752 | } else { |
4ef8d53c JH |
753 | debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n", |
754 | &dest, ether); | |
adf5d93e | 755 | NetSendPacket(NetTxPacket, pkt_hdr_size + payload_len); |
9214637a | 756 | return 0; /* transmitted */ |
73a8b27c | 757 | } |
73a8b27c WD |
758 | } |
759 | ||
5cfaa4e5 AR |
760 | #ifdef CONFIG_IP_DEFRAG |
761 | /* | |
762 | * This function collects fragments in a single packet, according | |
763 | * to the algorithm in RFC815. It returns NULL or the pointer to | |
764 | * a complete packet, in static storage | |
765 | */ | |
766 | #ifndef CONFIG_NET_MAXDEFRAG | |
767 | #define CONFIG_NET_MAXDEFRAG 16384 | |
768 | #endif | |
769 | /* | |
770 | * MAXDEFRAG, above, is chosen in the config file and is real data | |
771 | * so we need to add the NFS overhead, which is more than TFTP. | |
772 | * To use sizeof in the internal unnamed structures, we need a real | |
773 | * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately). | |
774 | * The compiler doesn't complain nor allocates the actual structure | |
775 | */ | |
776 | static struct rpc_t rpc_specimen; | |
777 | #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply)) | |
778 | ||
c5c59df0 | 779 | #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE) |
5cfaa4e5 AR |
780 | |
781 | /* | |
782 | * this is the packet being assembled, either data or frag control. | |
783 | * Fragments go by 8 bytes, so this union must be 8 bytes long | |
784 | */ | |
785 | struct hole { | |
786 | /* first_byte is address of this structure */ | |
787 | u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */ | |
788 | u16 next_hole; /* index of next (in 8-b blocks), 0 == none */ | |
789 | u16 prev_hole; /* index of prev, 0 == none */ | |
790 | u16 unused; | |
791 | }; | |
792 | ||
594c26f8 | 793 | static struct ip_udp_hdr *__NetDefragment(struct ip_udp_hdr *ip, int *lenp) |
5cfaa4e5 | 794 | { |
48522bb5 | 795 | static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN); |
5cfaa4e5 AR |
796 | static u16 first_hole, total_len; |
797 | struct hole *payload, *thisfrag, *h, *newh; | |
594c26f8 | 798 | struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff; |
5cfaa4e5 AR |
799 | uchar *indata = (uchar *)ip; |
800 | int offset8, start, len, done = 0; | |
801 | u16 ip_off = ntohs(ip->ip_off); | |
802 | ||
803 | /* payload starts after IP header, this fragment is in there */ | |
c5c59df0 | 804 | payload = (struct hole *)(pkt_buff + IP_HDR_SIZE); |
5cfaa4e5 AR |
805 | offset8 = (ip_off & IP_OFFS); |
806 | thisfrag = payload + offset8; | |
807 | start = offset8 * 8; | |
c5c59df0 | 808 | len = ntohs(ip->ip_len) - IP_HDR_SIZE; |
5cfaa4e5 AR |
809 | |
810 | if (start + len > IP_MAXUDP) /* fragment extends too far */ | |
811 | return NULL; | |
812 | ||
813 | if (!total_len || localip->ip_id != ip->ip_id) { | |
814 | /* new (or different) packet, reset structs */ | |
815 | total_len = 0xffff; | |
816 | payload[0].last_byte = ~0; | |
817 | payload[0].next_hole = 0; | |
818 | payload[0].prev_hole = 0; | |
819 | first_hole = 0; | |
820 | /* any IP header will work, copy the first we received */ | |
c5c59df0 | 821 | memcpy(localip, ip, IP_HDR_SIZE); |
5cfaa4e5 AR |
822 | } |
823 | ||
824 | /* | |
825 | * What follows is the reassembly algorithm. We use the payload | |
826 | * array as a linked list of hole descriptors, as each hole starts | |
827 | * at a multiple of 8 bytes. However, last byte can be whatever value, | |
828 | * so it is represented as byte count, not as 8-byte blocks. | |
829 | */ | |
830 | ||
831 | h = payload + first_hole; | |
832 | while (h->last_byte < start) { | |
833 | if (!h->next_hole) { | |
834 | /* no hole that far away */ | |
835 | return NULL; | |
836 | } | |
837 | h = payload + h->next_hole; | |
838 | } | |
839 | ||
e397e59e FS |
840 | /* last fragment may be 1..7 bytes, the "+7" forces acceptance */ |
841 | if (offset8 + ((len + 7) / 8) <= h - payload) { | |
5cfaa4e5 AR |
842 | /* no overlap with holes (dup fragment?) */ |
843 | return NULL; | |
844 | } | |
845 | ||
846 | if (!(ip_off & IP_FLAGS_MFRAG)) { | |
847 | /* no more fragmentss: truncate this (last) hole */ | |
848 | total_len = start + len; | |
849 | h->last_byte = start + len; | |
850 | } | |
851 | ||
852 | /* | |
853 | * There is some overlap: fix the hole list. This code doesn't | |
854 | * deal with a fragment that overlaps with two different holes | |
855 | * (thus being a superset of a previously-received fragment). | |
856 | */ | |
857 | ||
4f63acd0 | 858 | if ((h >= thisfrag) && (h->last_byte <= start + len)) { |
5cfaa4e5 AR |
859 | /* complete overlap with hole: remove hole */ |
860 | if (!h->prev_hole && !h->next_hole) { | |
861 | /* last remaining hole */ | |
862 | done = 1; | |
863 | } else if (!h->prev_hole) { | |
864 | /* first hole */ | |
865 | first_hole = h->next_hole; | |
866 | payload[h->next_hole].prev_hole = 0; | |
867 | } else if (!h->next_hole) { | |
868 | /* last hole */ | |
869 | payload[h->prev_hole].next_hole = 0; | |
870 | } else { | |
871 | /* in the middle of the list */ | |
872 | payload[h->next_hole].prev_hole = h->prev_hole; | |
873 | payload[h->prev_hole].next_hole = h->next_hole; | |
874 | } | |
875 | ||
876 | } else if (h->last_byte <= start + len) { | |
877 | /* overlaps with final part of the hole: shorten this hole */ | |
878 | h->last_byte = start; | |
879 | ||
880 | } else if (h >= thisfrag) { | |
881 | /* overlaps with initial part of the hole: move this hole */ | |
882 | newh = thisfrag + (len / 8); | |
883 | *newh = *h; | |
884 | h = newh; | |
885 | if (h->next_hole) | |
886 | payload[h->next_hole].prev_hole = (h - payload); | |
887 | if (h->prev_hole) | |
888 | payload[h->prev_hole].next_hole = (h - payload); | |
889 | else | |
890 | first_hole = (h - payload); | |
891 | ||
892 | } else { | |
893 | /* fragment sits in the middle: split the hole */ | |
894 | newh = thisfrag + (len / 8); | |
895 | *newh = *h; | |
896 | h->last_byte = start; | |
897 | h->next_hole = (newh - payload); | |
898 | newh->prev_hole = (h - payload); | |
899 | if (newh->next_hole) | |
900 | payload[newh->next_hole].prev_hole = (newh - payload); | |
901 | } | |
902 | ||
903 | /* finally copy this fragment and possibly return whole packet */ | |
c5c59df0 | 904 | memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len); |
5cfaa4e5 AR |
905 | if (!done) |
906 | return NULL; | |
907 | ||
908 | localip->ip_len = htons(total_len); | |
c5c59df0 | 909 | *lenp = total_len + IP_HDR_SIZE; |
5cfaa4e5 AR |
910 | return localip; |
911 | } | |
912 | ||
594c26f8 | 913 | static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp) |
5cfaa4e5 AR |
914 | { |
915 | u16 ip_off = ntohs(ip->ip_off); | |
916 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
917 | return ip; /* not a fragment */ | |
918 | return __NetDefragment(ip, lenp); | |
919 | } | |
920 | ||
921 | #else /* !CONFIG_IP_DEFRAG */ | |
922 | ||
594c26f8 | 923 | static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp) |
5cfaa4e5 AR |
924 | { |
925 | u16 ip_off = ntohs(ip->ip_off); | |
926 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
927 | return ip; /* not a fragment */ | |
928 | return NULL; | |
929 | } | |
930 | #endif | |
a3d991bd | 931 | |
8f79bb17 SG |
932 | /** |
933 | * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently | |
934 | * drop others. | |
935 | * | |
936 | * @parma ip IP packet containing the ICMP | |
937 | */ | |
594c26f8 | 938 | static void receive_icmp(struct ip_udp_hdr *ip, int len, |
cb487f56 | 939 | IPaddr_t src_ip, struct ethernet_hdr *et) |
8f79bb17 | 940 | { |
e0a63079 | 941 | struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src; |
8f79bb17 SG |
942 | |
943 | switch (icmph->type) { | |
944 | case ICMP_REDIRECT: | |
945 | if (icmph->code != ICMP_REDIR_HOST) | |
946 | return; | |
947 | printf(" ICMP Host Redirect to %pI4 ", | |
948 | &icmph->un.gateway); | |
949 | break; | |
a36b12f9 | 950 | default: |
8f79bb17 | 951 | #if defined(CONFIG_CMD_PING) |
a36b12f9 | 952 | ping_receive(et, ip, len); |
8f79bb17 | 953 | #endif |
39bccd21 | 954 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
955 | if (packet_icmp_handler) |
956 | packet_icmp_handler(icmph->type, icmph->code, | |
957 | ntohs(ip->udp_dst), src_ip, ntohs(ip->udp_src), | |
958 | icmph->un.data, ntohs(ip->udp_len)); | |
39bccd21 | 959 | #endif |
8f79bb17 SG |
960 | break; |
961 | } | |
962 | } | |
963 | ||
2a504df0 | 964 | void net_process_received_packet(uchar *in_packet, int len) |
2d966958 | 965 | { |
cb487f56 | 966 | struct ethernet_hdr *et; |
594c26f8 | 967 | struct ip_udp_hdr *ip; |
8d353eb8 | 968 | IPaddr_t dst_ip; |
03eb129f | 969 | IPaddr_t src_ip; |
8d353eb8 | 970 | int eth_proto; |
643d1ab2 | 971 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
972 | int iscdp; |
973 | #endif | |
974 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
975 | ||
4ef8d53c | 976 | debug_cond(DEBUG_NET_PKT, "packet received\n"); |
2d966958 | 977 | |
2a504df0 | 978 | NetRxPacket = in_packet; |
d9bec9f4 | 979 | NetRxPacketLen = len; |
2a504df0 | 980 | et = (struct ethernet_hdr *)in_packet; |
a3d991bd WD |
981 | |
982 | /* too small packet? */ | |
983 | if (len < ETHER_HDR_SIZE) | |
984 | return; | |
985 | ||
f85b6071 RJ |
986 | #ifdef CONFIG_API |
987 | if (push_packet) { | |
2a504df0 | 988 | (*push_packet)(in_packet, len); |
f85b6071 RJ |
989 | return; |
990 | } | |
991 | #endif | |
992 | ||
643d1ab2 | 993 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 994 | /* keep track if packet is CDP */ |
17351883 | 995 | iscdp = is_cdp_packet(et->et_dest); |
a3d991bd WD |
996 | #endif |
997 | ||
998 | myvlanid = ntohs(NetOurVLAN); | |
999 | if (myvlanid == (ushort)-1) | |
1000 | myvlanid = VLAN_NONE; | |
1001 | mynvlanid = ntohs(NetOurNativeVLAN); | |
1002 | if (mynvlanid == (ushort)-1) | |
1003 | mynvlanid = VLAN_NONE; | |
2d966958 | 1004 | |
8d353eb8 | 1005 | eth_proto = ntohs(et->et_protlen); |
2d966958 | 1006 | |
8d353eb8 | 1007 | if (eth_proto < 1514) { |
cb487f56 | 1008 | struct e802_hdr *et802 = (struct e802_hdr *)et; |
2d966958 | 1009 | /* |
da5ebe2c JH |
1010 | * Got a 802.2 packet. Check the other protocol field. |
1011 | * XXX VLAN over 802.2+SNAP not implemented! | |
2d966958 | 1012 | */ |
8d353eb8 | 1013 | eth_proto = ntohs(et802->et_prot); |
a3d991bd | 1014 | |
2a504df0 | 1015 | ip = (struct ip_udp_hdr *)(in_packet + E802_HDR_SIZE); |
2d966958 | 1016 | len -= E802_HDR_SIZE; |
a3d991bd | 1017 | |
8d353eb8 | 1018 | } else if (eth_proto != PROT_VLAN) { /* normal packet */ |
2a504df0 | 1019 | ip = (struct ip_udp_hdr *)(in_packet + ETHER_HDR_SIZE); |
2d966958 | 1020 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
1021 | |
1022 | } else { /* VLAN packet */ | |
c68cca35 JH |
1023 | struct vlan_ethernet_hdr *vet = |
1024 | (struct vlan_ethernet_hdr *)et; | |
a3d991bd | 1025 | |
4ef8d53c | 1026 | debug_cond(DEBUG_NET_PKT, "VLAN packet received\n"); |
0ebf04c6 | 1027 | |
a3d991bd WD |
1028 | /* too small packet? */ |
1029 | if (len < VLAN_ETHER_HDR_SIZE) | |
1030 | return; | |
1031 | ||
1032 | /* if no VLAN active */ | |
1033 | if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE | |
643d1ab2 | 1034 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1035 | && iscdp == 0 |
1036 | #endif | |
1037 | ) | |
1038 | return; | |
1039 | ||
1040 | cti = ntohs(vet->vet_tag); | |
1041 | vlanid = cti & VLAN_IDMASK; | |
8d353eb8 | 1042 | eth_proto = ntohs(vet->vet_type); |
a3d991bd | 1043 | |
2a504df0 | 1044 | ip = (struct ip_udp_hdr *)(in_packet + VLAN_ETHER_HDR_SIZE); |
a3d991bd | 1045 | len -= VLAN_ETHER_HDR_SIZE; |
2d966958 WD |
1046 | } |
1047 | ||
4ef8d53c | 1048 | debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto); |
2d966958 | 1049 | |
643d1ab2 | 1050 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 1051 | if (iscdp) { |
0b4c5ff4 | 1052 | cdp_receive((uchar *)ip, len); |
a3d991bd WD |
1053 | return; |
1054 | } | |
1055 | #endif | |
1056 | ||
1057 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
1058 | if (vlanid == VLAN_NONE) | |
1059 | vlanid = (mynvlanid & VLAN_IDMASK); | |
1060 | /* not matched? */ | |
1061 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
1062 | return; | |
1063 | } | |
1064 | ||
8d353eb8 | 1065 | switch (eth_proto) { |
2d966958 WD |
1066 | |
1067 | case PROT_ARP: | |
d280d3f4 | 1068 | ArpReceive(et, ip, len); |
289f932c | 1069 | break; |
2d966958 | 1070 | |
bf6cb247 | 1071 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1072 | case PROT_RARP: |
8b9c5322 | 1073 | rarp_receive(ip, len); |
2d966958 | 1074 | break; |
bf6cb247 | 1075 | #endif |
2d966958 | 1076 | case PROT_IP: |
4ef8d53c | 1077 | debug_cond(DEBUG_NET_PKT, "Got IP\n"); |
5cfaa4e5 | 1078 | /* Before we start poking the header, make sure it is there */ |
594c26f8 JH |
1079 | if (len < IP_UDP_HDR_SIZE) { |
1080 | debug("len bad %d < %lu\n", len, | |
1081 | (ulong)IP_UDP_HDR_SIZE); | |
2d966958 WD |
1082 | return; |
1083 | } | |
5cfaa4e5 | 1084 | /* Check the packet length */ |
2d966958 | 1085 | if (len < ntohs(ip->ip_len)) { |
4ef8d53c | 1086 | debug("len bad %d < %d\n", len, ntohs(ip->ip_len)); |
2d966958 WD |
1087 | return; |
1088 | } | |
1089 | len = ntohs(ip->ip_len); | |
4ef8d53c JH |
1090 | debug_cond(DEBUG_NET_PKT, "len=%d, v=%02x\n", |
1091 | len, ip->ip_hl_v & 0xff); | |
0ebf04c6 | 1092 | |
5cfaa4e5 | 1093 | /* Can't deal with anything except IPv4 */ |
d3c65b01 | 1094 | if ((ip->ip_hl_v & 0xf0) != 0x40) |
2d966958 | 1095 | return; |
5cfaa4e5 | 1096 | /* Can't deal with IP options (headers != 20 bytes) */ |
d3c65b01 | 1097 | if ((ip->ip_hl_v & 0x0f) > 0x05) |
6b52cfe1 | 1098 | return; |
5cfaa4e5 | 1099 | /* Check the Checksum of the header */ |
0da0fcd5 | 1100 | if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) { |
4ef8d53c | 1101 | debug("checksum bad\n"); |
2d966958 WD |
1102 | return; |
1103 | } | |
5cfaa4e5 | 1104 | /* If it is not for us, ignore it */ |
8d353eb8 JH |
1105 | dst_ip = NetReadIP(&ip->ip_dst); |
1106 | if (NetOurIP && dst_ip != NetOurIP && dst_ip != 0xFFFFFFFF) { | |
53a5c424 | 1107 | #ifdef CONFIG_MCAST_TFTP |
8d353eb8 | 1108 | if (Mcast_addr != dst_ip) |
53a5c424 | 1109 | #endif |
c819abee | 1110 | return; |
2d966958 | 1111 | } |
03eb129f LC |
1112 | /* Read source IP address for later use */ |
1113 | src_ip = NetReadIP(&ip->ip_src); | |
5cfaa4e5 AR |
1114 | /* |
1115 | * The function returns the unchanged packet if it's not | |
1116 | * a fragment, and either the complete packet or NULL if | |
1117 | * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL) | |
1118 | */ | |
ccb9ebef LC |
1119 | ip = NetDefragment(ip, &len); |
1120 | if (!ip) | |
5cfaa4e5 | 1121 | return; |
2d966958 WD |
1122 | /* |
1123 | * watch for ICMP host redirects | |
1124 | * | |
8bde7f77 WD |
1125 | * There is no real handler code (yet). We just watch |
1126 | * for ICMP host redirect messages. In case anybody | |
1127 | * sees these messages: please contact me | |
1128 | * (wd@denx.de), or - even better - send me the | |
1129 | * necessary fixes :-) | |
2d966958 | 1130 | * |
8bde7f77 WD |
1131 | * Note: in all cases where I have seen this so far |
1132 | * it was a problem with the router configuration, | |
1133 | * for instance when a router was configured in the | |
1134 | * BOOTP reply, but the TFTP server was on the same | |
1135 | * subnet. So this is probably a warning that your | |
1136 | * configuration might be wrong. But I'm not really | |
1137 | * sure if there aren't any other situations. | |
4793ee65 SG |
1138 | * |
1139 | * Simon Glass <sjg@chromium.org>: We get an ICMP when | |
1140 | * we send a tftp packet to a dead connection, or when | |
1141 | * there is no server at the other end. | |
2d966958 WD |
1142 | */ |
1143 | if (ip->ip_p == IPPROTO_ICMP) { | |
8f79bb17 SG |
1144 | receive_icmp(ip, len, src_ip, et); |
1145 | return; | |
2d966958 WD |
1146 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1147 | return; | |
1148 | } | |
1149 | ||
4ef8d53c JH |
1150 | debug_cond(DEBUG_DEV_PKT, |
1151 | "received UDP (to=%pI4, from=%pI4, len=%d)\n", | |
1152 | &dst_ip, &src_ip, len); | |
1153 | ||
8534bf9a SR |
1154 | #ifdef CONFIG_UDP_CHECKSUM |
1155 | if (ip->udp_xsum != 0) { | |
b2f50807 | 1156 | ulong xsum; |
8534bf9a SR |
1157 | ushort *sumptr; |
1158 | ushort sumlen; | |
1159 | ||
1160 | xsum = ip->ip_p; | |
1161 | xsum += (ntohs(ip->udp_len)); | |
1162 | xsum += (ntohl(ip->ip_src) >> 16) & 0x0000ffff; | |
1163 | xsum += (ntohl(ip->ip_src) >> 0) & 0x0000ffff; | |
1164 | xsum += (ntohl(ip->ip_dst) >> 16) & 0x0000ffff; | |
1165 | xsum += (ntohl(ip->ip_dst) >> 0) & 0x0000ffff; | |
1166 | ||
1167 | sumlen = ntohs(ip->udp_len); | |
1168 | sumptr = (ushort *) &(ip->udp_src); | |
1169 | ||
1170 | while (sumlen > 1) { | |
b2f50807 | 1171 | ushort sumdata; |
8534bf9a SR |
1172 | |
1173 | sumdata = *sumptr++; | |
1174 | xsum += ntohs(sumdata); | |
1175 | sumlen -= 2; | |
1176 | } | |
1177 | if (sumlen > 0) { | |
b2f50807 | 1178 | ushort sumdata; |
8534bf9a SR |
1179 | |
1180 | sumdata = *(unsigned char *) sumptr; | |
b2f50807 | 1181 | sumdata = (sumdata << 8) & 0xff00; |
8534bf9a SR |
1182 | xsum += sumdata; |
1183 | } | |
1184 | while ((xsum >> 16) != 0) { | |
3e38e429 LC |
1185 | xsum = (xsum & 0x0000ffff) + |
1186 | ((xsum >> 16) & 0x0000ffff); | |
8534bf9a SR |
1187 | } |
1188 | if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) { | |
9b55a253 WD |
1189 | printf(" UDP wrong checksum %08lx %08x\n", |
1190 | xsum, ntohs(ip->udp_xsum)); | |
8534bf9a SR |
1191 | return; |
1192 | } | |
1193 | } | |
1194 | #endif | |
1195 | ||
53a5c424 | 1196 | |
1f9ce306 | 1197 | #if defined (CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD) |
594c26f8 | 1198 | nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE, |
8cab08e8 | 1199 | src_ip, |
594c26f8 JH |
1200 | ntohs(ip->udp_dst), |
1201 | ntohs(ip->udp_src), | |
1202 | ntohs(ip->udp_len) - UDP_HDR_SIZE); | |
68ceb29e | 1203 | #endif |
2d966958 WD |
1204 | /* |
1205 | * IP header OK. Pass the packet to the current handler. | |
1206 | */ | |
ece223b5 JH |
1207 | (*udp_packet_handler)((uchar *)ip + IP_UDP_HDR_SIZE, |
1208 | ntohs(ip->udp_dst), | |
1209 | src_ip, | |
1210 | ntohs(ip->udp_src), | |
1211 | ntohs(ip->udp_len) - UDP_HDR_SIZE); | |
2d966958 WD |
1212 | break; |
1213 | } | |
1214 | } | |
1215 | ||
1216 | ||
1217 | /**********************************************************************/ | |
1218 | ||
e4bf0c5c | 1219 | static int net_check_prereq(enum proto_t protocol) |
2d966958 WD |
1220 | { |
1221 | switch (protocol) { | |
6e592385 | 1222 | /* Fall through */ |
643d1ab2 | 1223 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 1224 | case PING: |
6e592385 | 1225 | if (NetPingIP == 0) { |
4f63acd0 | 1226 | puts("*** ERROR: ping address not given\n"); |
92895de9 | 1227 | return 1; |
6e592385 WD |
1228 | } |
1229 | goto common; | |
cbd8a35c | 1230 | #endif |
643d1ab2 | 1231 | #if defined(CONFIG_CMD_SNTP) |
ea287deb WD |
1232 | case SNTP: |
1233 | if (NetNtpServerIP == 0) { | |
4f63acd0 | 1234 | puts("*** ERROR: NTP server address not given\n"); |
92895de9 | 1235 | return 1; |
ea287deb WD |
1236 | } |
1237 | goto common; | |
1238 | #endif | |
1a32bf41 RG |
1239 | #if defined(CONFIG_CMD_DNS) |
1240 | case DNS: | |
1241 | if (NetOurDNSIP == 0) { | |
1242 | puts("*** ERROR: DNS server address not given\n"); | |
1243 | return 1; | |
1244 | } | |
1245 | goto common; | |
1246 | #endif | |
643d1ab2 | 1247 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 1248 | case NFS: |
73a8b27c | 1249 | #endif |
e4bf0c5c | 1250 | case TFTPGET: |
1fb7cd49 | 1251 | case TFTPPUT: |
6e592385 | 1252 | if (NetServerIP == 0) { |
4f63acd0 | 1253 | puts("*** ERROR: `serverip' not set\n"); |
92895de9 | 1254 | return 1; |
6e592385 | 1255 | } |
4f63acd0 LC |
1256 | #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \ |
1257 | defined(CONFIG_CMD_DNS) | |
1258 | common: | |
73a8b27c | 1259 | #endif |
8b6bbe10 | 1260 | /* Fall through */ |
73a8b27c | 1261 | |
8b6bbe10 | 1262 | case NETCONS: |
7a83af07 | 1263 | case TFTPSRV: |
6e592385 | 1264 | if (NetOurIP == 0) { |
4f63acd0 | 1265 | puts("*** ERROR: `ipaddr' not set\n"); |
92895de9 | 1266 | return 1; |
6e592385 WD |
1267 | } |
1268 | /* Fall through */ | |
2d966958 | 1269 | |
bf6cb247 | 1270 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1271 | case RARP: |
bf6cb247 | 1272 | #endif |
2d966958 | 1273 | case BOOTP: |
a3d991bd | 1274 | case CDP: |
bf6cb247 | 1275 | case DHCP: |
d22c338e | 1276 | case LINKLOCAL: |
4f63acd0 | 1277 | if (memcmp(NetOurEther, "\0\0\0\0\0\0", 6) == 0) { |
4f63acd0 | 1278 | int num = eth_get_dev_index(); |
2d966958 | 1279 | |
6e592385 WD |
1280 | switch (num) { |
1281 | case -1: | |
4f63acd0 | 1282 | puts("*** ERROR: No ethernet found.\n"); |
92895de9 | 1283 | return 1; |
6e592385 | 1284 | case 0: |
4f63acd0 | 1285 | puts("*** ERROR: `ethaddr' not set\n"); |
2d966958 | 1286 | break; |
6e592385 | 1287 | default: |
4f63acd0 | 1288 | printf("*** ERROR: `eth%daddr' not set\n", |
2d966958 WD |
1289 | num); |
1290 | break; | |
6e592385 | 1291 | } |
2d966958 | 1292 | |
4f63acd0 | 1293 | NetStartAgain(); |
92895de9 | 1294 | return 2; |
6e592385 WD |
1295 | } |
1296 | /* Fall through */ | |
1297 | default: | |
92895de9 | 1298 | return 0; |
2d966958 | 1299 | } |
92895de9 | 1300 | return 0; /* OK */ |
2d966958 WD |
1301 | } |
1302 | /**********************************************************************/ | |
1303 | ||
a3d991bd WD |
1304 | int |
1305 | NetEthHdrSize(void) | |
1306 | { | |
1307 | ushort myvlanid; | |
2d966958 | 1308 | |
a3d991bd WD |
1309 | myvlanid = ntohs(NetOurVLAN); |
1310 | if (myvlanid == (ushort)-1) | |
1311 | myvlanid = VLAN_NONE; | |
1312 | ||
3e38e429 LC |
1313 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : |
1314 | VLAN_ETHER_HDR_SIZE; | |
a3d991bd WD |
1315 | } |
1316 | ||
1317 | int | |
db288a96 | 1318 | NetSetEther(uchar *xet, uchar * addr, uint prot) |
2d966958 | 1319 | { |
cb487f56 | 1320 | struct ethernet_hdr *et = (struct ethernet_hdr *)xet; |
a3d991bd WD |
1321 | ushort myvlanid; |
1322 | ||
1323 | myvlanid = ntohs(NetOurVLAN); | |
1324 | if (myvlanid == (ushort)-1) | |
1325 | myvlanid = VLAN_NONE; | |
2d966958 | 1326 | |
4f63acd0 LC |
1327 | memcpy(et->et_dest, addr, 6); |
1328 | memcpy(et->et_src, NetOurEther, 6); | |
a3d991bd | 1329 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
c819abee | 1330 | et->et_protlen = htons(prot); |
a3d991bd WD |
1331 | return ETHER_HDR_SIZE; |
1332 | } else { | |
c68cca35 JH |
1333 | struct vlan_ethernet_hdr *vet = |
1334 | (struct vlan_ethernet_hdr *)xet; | |
2d966958 | 1335 | |
a3d991bd WD |
1336 | vet->vet_vlan_type = htons(PROT_VLAN); |
1337 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1338 | vet->vet_type = htons(prot); | |
1339 | return VLAN_ETHER_HDR_SIZE; | |
1340 | } | |
1341 | } | |
2d966958 | 1342 | |
e7111015 JH |
1343 | int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot) |
1344 | { | |
1345 | ushort protlen; | |
1346 | ||
1347 | memcpy(et->et_dest, addr, 6); | |
1348 | memcpy(et->et_src, NetOurEther, 6); | |
1349 | protlen = ntohs(et->et_protlen); | |
1350 | if (protlen == PROT_VLAN) { | |
1351 | struct vlan_ethernet_hdr *vet = | |
1352 | (struct vlan_ethernet_hdr *)et; | |
1353 | vet->vet_type = htons(prot); | |
1354 | return VLAN_ETHER_HDR_SIZE; | |
1355 | } else if (protlen > 1514) { | |
1356 | et->et_protlen = htons(prot); | |
1357 | return ETHER_HDR_SIZE; | |
1358 | } else { | |
1359 | /* 802.2 + SNAP */ | |
1360 | struct e802_hdr *et802 = (struct e802_hdr *)et; | |
1361 | et802->et_prot = htons(prot); | |
1362 | return E802_HDR_SIZE; | |
1363 | } | |
1364 | } | |
1365 | ||
4b11c916 | 1366 | void net_set_ip_header(uchar *pkt, IPaddr_t dest, IPaddr_t source) |
2d966958 | 1367 | { |
4b11c916 | 1368 | struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt; |
2d966958 WD |
1369 | |
1370 | /* | |
4b11c916 | 1371 | * Construct an IP header. |
2d966958 | 1372 | */ |
3e38e429 LC |
1373 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
1374 | ip->ip_hl_v = 0x45; | |
2d966958 | 1375 | ip->ip_tos = 0; |
4b11c916 | 1376 | ip->ip_len = htons(IP_HDR_SIZE); |
2d966958 | 1377 | ip->ip_id = htons(NetIPID++); |
e0c07b86 | 1378 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
2d966958 | 1379 | ip->ip_ttl = 255; |
2d966958 | 1380 | ip->ip_sum = 0; |
3e38e429 | 1381 | /* already in network byte order */ |
4b11c916 JH |
1382 | NetCopyIP((void *)&ip->ip_src, &source); |
1383 | /* already in network byte order */ | |
6b147d11 | 1384 | NetCopyIP((void *)&ip->ip_dst, &dest); |
4b11c916 JH |
1385 | } |
1386 | ||
1387 | void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport, int sport, | |
1388 | int len) | |
1389 | { | |
1390 | struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt; | |
1391 | ||
1392 | /* | |
1393 | * If the data is an odd number of bytes, zero the | |
1394 | * byte after the last byte so that the checksum | |
1395 | * will work. | |
1396 | */ | |
1397 | if (len & 1) | |
1398 | pkt[IP_UDP_HDR_SIZE + len] = 0; | |
1399 | ||
1400 | net_set_ip_header(pkt, dest, NetOurIP); | |
1401 | ip->ip_len = htons(IP_UDP_HDR_SIZE + len); | |
1402 | ip->ip_p = IPPROTO_UDP; | |
0da0fcd5 | 1403 | ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE); |
4b11c916 | 1404 | |
2d966958 WD |
1405 | ip->udp_src = htons(sport); |
1406 | ip->udp_dst = htons(dport); | |
594c26f8 | 1407 | ip->udp_len = htons(UDP_HDR_SIZE + len); |
2d966958 | 1408 | ip->udp_xsum = 0; |
2d966958 WD |
1409 | } |
1410 | ||
4f63acd0 | 1411 | void copy_filename(char *dst, const char *src, int size) |
2d966958 WD |
1412 | { |
1413 | if (*src && (*src == '"')) { | |
1414 | ++src; | |
1415 | --size; | |
1416 | } | |
1417 | ||
d3c65b01 | 1418 | while ((--size > 0) && *src && (*src != '"')) |
2d966958 | 1419 | *dst++ = *src++; |
2d966958 WD |
1420 | *dst = '\0'; |
1421 | } | |
1422 | ||
3e38e429 LC |
1423 | #if defined(CONFIG_CMD_NFS) || \ |
1424 | defined(CONFIG_CMD_SNTP) || \ | |
1425 | defined(CONFIG_CMD_DNS) | |
1a32bf41 | 1426 | /* |
9739946c RG |
1427 | * make port a little random (1024-17407) |
1428 | * This keeps the math somewhat trivial to compute, and seems to work with | |
1429 | * all supported protocols/clients/servers | |
1a32bf41 RG |
1430 | */ |
1431 | unsigned int random_port(void) | |
1432 | { | |
9739946c | 1433 | return 1024 + (get_timer(0) % 0x4000); |
1a32bf41 RG |
1434 | } |
1435 | #endif | |
1436 | ||
4f63acd0 | 1437 | void ip_to_string(IPaddr_t x, char *s) |
2d966958 | 1438 | { |
4f63acd0 LC |
1439 | x = ntohl(x); |
1440 | sprintf(s, "%d.%d.%d.%d", | |
1441 | (int) ((x >> 24) & 0xff), | |
1442 | (int) ((x >> 16) & 0xff), | |
1443 | (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff) | |
6e592385 | 1444 | ); |
2d966958 WD |
1445 | } |
1446 | ||
a3d991bd WD |
1447 | void VLAN_to_string(ushort x, char *s) |
1448 | { | |
1449 | x = ntohs(x); | |
1450 | ||
1451 | if (x == (ushort)-1) | |
1452 | x = VLAN_NONE; | |
1453 | ||
1454 | if (x == VLAN_NONE) | |
1455 | strcpy(s, "none"); | |
1456 | else | |
1457 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1458 | } | |
1459 | ||
2e3ef6e4 | 1460 | ushort string_to_VLAN(const char *s) |
a3d991bd WD |
1461 | { |
1462 | ushort id; | |
1463 | ||
1464 | if (s == NULL) | |
b9711de1 | 1465 | return htons(VLAN_NONE); |
a3d991bd WD |
1466 | |
1467 | if (*s < '0' || *s > '9') | |
1468 | id = VLAN_NONE; | |
1469 | else | |
1470 | id = (ushort)simple_strtoul(s, NULL, 10); | |
1471 | ||
b9711de1 | 1472 | return htons(id); |
a3d991bd WD |
1473 | } |
1474 | ||
a3d991bd WD |
1475 | ushort getenv_VLAN(char *var) |
1476 | { | |
92895de9 | 1477 | return string_to_VLAN(getenv(var)); |
a3d991bd | 1478 | } |