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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> |
60304592 | 87 | #include <errno.h> |
2d966958 | 88 | #include <net.h> |
4545f4e6 | 89 | #if defined(CONFIG_STATUS_LED) |
fc3e2165 | 90 | #include <miiphy.h> |
4545f4e6 | 91 | #include <status_led.h> |
fc3e2165 | 92 | #endif |
4545f4e6 JH |
93 | #include <watchdog.h> |
94 | #include <linux/compiler.h> | |
95 | #include "arp.h" | |
96 | #include "bootp.h" | |
f575ae1f | 97 | #include "cdp.h" |
1a32bf41 RG |
98 | #if defined(CONFIG_CMD_DNS) |
99 | #include "dns.h" | |
100 | #endif | |
d22c338e | 101 | #include "link_local.h" |
4545f4e6 | 102 | #include "nfs.h" |
a36b12f9 | 103 | #include "ping.h" |
4545f4e6 JH |
104 | #include "rarp.h" |
105 | #if defined(CONFIG_CMD_SNTP) | |
106 | #include "sntp.h" | |
107 | #endif | |
108 | #include "tftp.h" | |
2d966958 | 109 | |
d87080b7 WD |
110 | DECLARE_GLOBAL_DATA_PTR; |
111 | ||
2d966958 WD |
112 | /** BOOTP EXTENTIONS **/ |
113 | ||
3e38e429 | 114 | /* Our subnet mask (0=unknown) */ |
049a95a7 | 115 | struct in_addr net_netmask; |
3e38e429 | 116 | /* Our gateways IP address */ |
049a95a7 | 117 | struct in_addr net_gateway; |
3e38e429 | 118 | /* Our DNS IP address */ |
049a95a7 | 119 | struct in_addr net_dns_server; |
1fe80d79 | 120 | #if defined(CONFIG_BOOTP_DNS2) |
3e38e429 | 121 | /* Our 2nd DNS IP address */ |
049a95a7 | 122 | struct in_addr net_dns_server2; |
3e38e429 | 123 | #endif |
2d966958 | 124 | |
53a5c424 | 125 | #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */ |
049a95a7 | 126 | struct in_addr net_mcast_addr; |
53a5c424 DU |
127 | #endif |
128 | ||
2d966958 WD |
129 | /** END OF BOOTP EXTENTIONS **/ |
130 | ||
3e38e429 | 131 | /* Our ethernet address */ |
0adb5b76 | 132 | u8 net_ethaddr[6]; |
3e38e429 | 133 | /* Boot server enet address */ |
0adb5b76 | 134 | u8 net_server_ethaddr[6]; |
3e38e429 | 135 | /* Our IP addr (0 = unknown) */ |
049a95a7 | 136 | struct in_addr net_ip; |
3e38e429 | 137 | /* Server IP addr (0 = unknown) */ |
049a95a7 | 138 | struct in_addr net_server_ip; |
3e38e429 | 139 | /* Current receive packet */ |
1203fcce | 140 | uchar *net_rx_packet; |
3e38e429 | 141 | /* Current rx packet length */ |
1203fcce | 142 | int net_rx_packet_len; |
3e38e429 | 143 | /* IP packet ID */ |
bc0571fc | 144 | static unsigned net_ip_id; |
3e38e429 | 145 | /* Ethernet bcast address */ |
0adb5b76 JH |
146 | const u8 net_bcast_ethaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
147 | const u8 net_null_ethaddr[6]; | |
f85b6071 | 148 | #ifdef CONFIG_API |
bc0571fc | 149 | void (*push_packet)(void *, int len) = 0; |
f85b6071 | 150 | #endif |
3e38e429 | 151 | /* Network loop state */ |
22f6e99d | 152 | enum net_loop_state net_state; |
3e38e429 | 153 | /* Tried all network devices */ |
bc0571fc | 154 | int net_restart_wrap; |
3e38e429 | 155 | /* Network loop restarted */ |
bc0571fc | 156 | static int net_restarted; |
3e38e429 | 157 | /* At least one device configured */ |
bc0571fc | 158 | static int net_dev_exists; |
2d966958 | 159 | |
6e592385 | 160 | /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */ |
3e38e429 | 161 | /* default is without VLAN */ |
4fd5055f | 162 | ushort net_our_vlan = 0xFFFF; |
3e38e429 | 163 | /* ditto */ |
4fd5055f | 164 | ushort net_native_vlan = 0xFFFF; |
a3d991bd | 165 | |
3e38e429 | 166 | /* Boot File name */ |
1411157d JH |
167 | char net_boot_file_name[128]; |
168 | /* The actual transferred size of the bootfile (in bytes) */ | |
169 | u32 net_boot_file_size; | |
170 | /* Boot file size in blocks as reported by the DHCP server */ | |
171 | u32 net_boot_file_expected_size_in_blocks; | |
2d966958 | 172 | |
643d1ab2 | 173 | #if defined(CONFIG_CMD_SNTP) |
3e38e429 | 174 | /* NTP server IP address */ |
049a95a7 | 175 | struct in_addr net_ntp_server; |
3e38e429 | 176 | /* offset time from UTC */ |
bc0571fc | 177 | int net_ntp_time_offset; |
ea287deb WD |
178 | #endif |
179 | ||
1203fcce | 180 | static uchar net_pkt_buf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
2a504df0 JH |
181 | /* Receive packets */ |
182 | uchar *net_rx_packets[PKTBUFSRX]; | |
ece223b5 JH |
183 | /* Current UDP RX packet handler */ |
184 | static rxhand_f *udp_packet_handler; | |
185 | /* Current ARP RX packet handler */ | |
186 | static rxhand_f *arp_packet_handler; | |
39bccd21 | 187 | #ifdef CONFIG_CMD_TFTPPUT |
ece223b5 JH |
188 | /* Current ICMP rx handler */ |
189 | static rxhand_icmp_f *packet_icmp_handler; | |
39bccd21 | 190 | #endif |
3e38e429 | 191 | /* Current timeout handler */ |
bc0571fc | 192 | static thand_f *time_handler; |
3e38e429 | 193 | /* Time base value */ |
bc0571fc | 194 | static ulong time_start; |
3e38e429 | 195 | /* Current timeout value */ |
bc0571fc | 196 | static ulong time_delta; |
3e38e429 | 197 | /* THE transmit packet */ |
1203fcce | 198 | uchar *net_tx_packet; |
2d966958 | 199 | |
e4bf0c5c | 200 | static int net_check_prereq(enum proto_t protocol); |
2d966958 | 201 | |
bc0571fc | 202 | static int net_try_count; |
67b96e87 | 203 | |
b63056d6 JL |
204 | int __maybe_unused net_busy_flag; |
205 | ||
73a8b27c WD |
206 | /**********************************************************************/ |
207 | ||
a9f51c9b JH |
208 | static int on_bootfile(const char *name, const char *value, enum env_op op, |
209 | int flags) | |
210 | { | |
fd305633 JH |
211 | if (flags & H_PROGRAMMATIC) |
212 | return 0; | |
213 | ||
a9f51c9b JH |
214 | switch (op) { |
215 | case env_op_create: | |
216 | case env_op_overwrite: | |
1411157d JH |
217 | copy_filename(net_boot_file_name, value, |
218 | sizeof(net_boot_file_name)); | |
a9f51c9b JH |
219 | break; |
220 | default: | |
221 | break; | |
222 | } | |
223 | ||
224 | return 0; | |
225 | } | |
226 | U_BOOT_ENV_CALLBACK(bootfile, on_bootfile); | |
227 | ||
fd305633 JH |
228 | static int on_ipaddr(const char *name, const char *value, enum env_op op, |
229 | int flags) | |
230 | { | |
231 | if (flags & H_PROGRAMMATIC) | |
232 | return 0; | |
233 | ||
234 | net_ip = string_to_ip(value); | |
235 | ||
236 | return 0; | |
237 | } | |
238 | U_BOOT_ENV_CALLBACK(ipaddr, on_ipaddr); | |
239 | ||
240 | static int on_gatewayip(const char *name, const char *value, enum env_op op, | |
241 | int flags) | |
242 | { | |
243 | if (flags & H_PROGRAMMATIC) | |
244 | return 0; | |
245 | ||
246 | net_gateway = string_to_ip(value); | |
247 | ||
248 | return 0; | |
249 | } | |
250 | U_BOOT_ENV_CALLBACK(gatewayip, on_gatewayip); | |
251 | ||
252 | static int on_netmask(const char *name, const char *value, enum env_op op, | |
253 | int flags) | |
254 | { | |
255 | if (flags & H_PROGRAMMATIC) | |
256 | return 0; | |
257 | ||
258 | net_netmask = string_to_ip(value); | |
259 | ||
260 | return 0; | |
261 | } | |
262 | U_BOOT_ENV_CALLBACK(netmask, on_netmask); | |
263 | ||
264 | static int on_serverip(const char *name, const char *value, enum env_op op, | |
265 | int flags) | |
266 | { | |
267 | if (flags & H_PROGRAMMATIC) | |
268 | return 0; | |
269 | ||
270 | net_server_ip = string_to_ip(value); | |
271 | ||
272 | return 0; | |
273 | } | |
274 | U_BOOT_ENV_CALLBACK(serverip, on_serverip); | |
275 | ||
276 | static int on_nvlan(const char *name, const char *value, enum env_op op, | |
277 | int flags) | |
278 | { | |
279 | if (flags & H_PROGRAMMATIC) | |
280 | return 0; | |
281 | ||
282 | net_native_vlan = string_to_vlan(value); | |
283 | ||
284 | return 0; | |
285 | } | |
286 | U_BOOT_ENV_CALLBACK(nvlan, on_nvlan); | |
287 | ||
288 | static int on_vlan(const char *name, const char *value, enum env_op op, | |
289 | int flags) | |
290 | { | |
291 | if (flags & H_PROGRAMMATIC) | |
292 | return 0; | |
293 | ||
294 | net_our_vlan = string_to_vlan(value); | |
295 | ||
296 | return 0; | |
297 | } | |
298 | U_BOOT_ENV_CALLBACK(vlan, on_vlan); | |
299 | ||
300 | #if defined(CONFIG_CMD_DNS) | |
301 | static int on_dnsip(const char *name, const char *value, enum env_op op, | |
302 | int flags) | |
303 | { | |
304 | if (flags & H_PROGRAMMATIC) | |
305 | return 0; | |
306 | ||
307 | net_dns_server = string_to_ip(value); | |
308 | ||
309 | return 0; | |
310 | } | |
311 | U_BOOT_ENV_CALLBACK(dnsip, on_dnsip); | |
312 | #endif | |
313 | ||
e4a3d57d SG |
314 | /* |
315 | * Check if autoload is enabled. If so, use either NFS or TFTP to download | |
316 | * the boot file. | |
317 | */ | |
318 | void net_auto_load(void) | |
319 | { | |
ec8a252c | 320 | #if defined(CONFIG_CMD_NFS) |
e4a3d57d SG |
321 | const char *s = getenv("autoload"); |
322 | ||
ec8a252c JH |
323 | if (s != NULL && strcmp(s, "NFS") == 0) { |
324 | /* | |
325 | * Use NFS to load the bootfile. | |
326 | */ | |
68c76a3a | 327 | nfs_start(); |
ec8a252c JH |
328 | return; |
329 | } | |
e4a3d57d | 330 | #endif |
ec8a252c JH |
331 | if (getenv_yesno("autoload") == 0) { |
332 | /* | |
333 | * Just use BOOTP/RARP to configure system; | |
334 | * Do not use TFTP to load the bootfile. | |
335 | */ | |
336 | net_set_state(NETLOOP_SUCCESS); | |
337 | return; | |
e4a3d57d | 338 | } |
8885c5fe | 339 | tftp_start(TFTPGET); |
e4a3d57d SG |
340 | } |
341 | ||
bc0571fc | 342 | static void net_init_loop(void) |
2f70c49e | 343 | { |
7315cfd9 | 344 | if (eth_get_dev()) |
0adb5b76 | 345 | memcpy(net_ethaddr, eth_get_ethaddr(), 6); |
3c172c4f | 346 | |
da95427c | 347 | return; |
2f70c49e HS |
348 | } |
349 | ||
ece223b5 JH |
350 | static void net_clear_handlers(void) |
351 | { | |
352 | net_set_udp_handler(NULL); | |
353 | net_set_arp_handler(NULL); | |
bc0571fc | 354 | net_set_timeout_handler(0, NULL); |
ece223b5 JH |
355 | } |
356 | ||
357 | static void net_cleanup_loop(void) | |
358 | { | |
359 | net_clear_handlers(); | |
360 | } | |
361 | ||
46c495d5 JH |
362 | void net_init(void) |
363 | { | |
364 | static int first_call = 1; | |
365 | ||
366 | if (first_call) { | |
367 | /* | |
368 | * Setup packet buffers, aligned correctly. | |
369 | */ | |
370 | int i; | |
371 | ||
1203fcce JH |
372 | net_tx_packet = &net_pkt_buf[0] + (PKTALIGN - 1); |
373 | net_tx_packet -= (ulong)net_tx_packet % PKTALIGN; | |
2a504df0 | 374 | for (i = 0; i < PKTBUFSRX; i++) { |
1203fcce JH |
375 | net_rx_packets[i] = net_tx_packet + |
376 | (i + 1) * PKTSIZE_ALIGN; | |
2a504df0 | 377 | } |
85d25e0e | 378 | arp_init(); |
46c495d5 JH |
379 | net_clear_handlers(); |
380 | ||
381 | /* Only need to setup buffer pointers once. */ | |
382 | first_call = 0; | |
383 | } | |
384 | ||
bc0571fc | 385 | net_init_loop(); |
46c495d5 JH |
386 | } |
387 | ||
2d966958 WD |
388 | /**********************************************************************/ |
389 | /* | |
390 | * Main network processing loop. | |
391 | */ | |
392 | ||
bc0571fc | 393 | int net_loop(enum proto_t protocol) |
2d966958 | 394 | { |
60304592 | 395 | int ret = -EINVAL; |
2d966958 | 396 | |
bc0571fc JH |
397 | net_restarted = 0; |
398 | net_dev_exists = 0; | |
399 | net_try_count = 1; | |
400 | debug_cond(DEBUG_INT_STATE, "--- net_loop Entry\n"); | |
73a8b27c | 401 | |
573f14fe | 402 | bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start"); |
46c495d5 | 403 | net_init(); |
f8be7d65 | 404 | if (eth_is_on_demand_init() || protocol != NETCONS) { |
b1bf6f2c | 405 | eth_halt(); |
f8be7d65 | 406 | eth_set_current(); |
60304592 JH |
407 | ret = eth_init(); |
408 | if (ret < 0) { | |
f8be7d65 | 409 | eth_halt(); |
60304592 | 410 | return ret; |
f8be7d65 | 411 | } |
bc0571fc | 412 | } else { |
d2eaec60 | 413 | eth_init_state_only(); |
bc0571fc | 414 | } |
2d966958 | 415 | restart: |
b63056d6 JL |
416 | #ifdef CONFIG_USB_KEYBOARD |
417 | net_busy_flag = 0; | |
418 | #endif | |
22f6e99d | 419 | net_set_state(NETLOOP_CONTINUE); |
2d966958 WD |
420 | |
421 | /* | |
422 | * Start the ball rolling with the given start function. From | |
423 | * here on, this code is a state machine driven by received | |
424 | * packets and timer events. | |
425 | */ | |
bc0571fc JH |
426 | debug_cond(DEBUG_INT_STATE, "--- net_loop Init\n"); |
427 | net_init_loop(); | |
2d966958 | 428 | |
4f63acd0 | 429 | switch (net_check_prereq(protocol)) { |
2d966958 WD |
430 | case 1: |
431 | /* network not configured */ | |
b1bf6f2c | 432 | eth_halt(); |
60304592 | 433 | return -ENODEV; |
2d966958 | 434 | |
2d966958 WD |
435 | case 2: |
436 | /* network device not configured */ | |
437 | break; | |
2d966958 WD |
438 | |
439 | case 0: | |
bc0571fc | 440 | net_dev_exists = 1; |
1411157d | 441 | net_boot_file_size = 0; |
2d966958 | 442 | switch (protocol) { |
e4bf0c5c | 443 | case TFTPGET: |
1fb7cd49 SG |
444 | #ifdef CONFIG_CMD_TFTPPUT |
445 | case TFTPPUT: | |
446 | #endif | |
2d966958 | 447 | /* always use ARP to get server ethernet address */ |
8885c5fe | 448 | tftp_start(protocol); |
2d966958 | 449 | break; |
7a83af07 LC |
450 | #ifdef CONFIG_CMD_TFTPSRV |
451 | case TFTPSRV: | |
8885c5fe | 452 | tftp_start_server(); |
7a83af07 LC |
453 | break; |
454 | #endif | |
643d1ab2 | 455 | #if defined(CONFIG_CMD_DHCP) |
2d966958 | 456 | case DHCP: |
7044c6bb | 457 | bootp_reset(); |
049a95a7 | 458 | net_ip.s_addr = 0; |
7044c6bb | 459 | dhcp_request(); /* Basically same as BOOTP */ |
2d966958 | 460 | break; |
610f2e9c | 461 | #endif |
2d966958 WD |
462 | |
463 | case BOOTP: | |
7044c6bb | 464 | bootp_reset(); |
049a95a7 | 465 | net_ip.s_addr = 0; |
7044c6bb | 466 | bootp_request(); |
2d966958 WD |
467 | break; |
468 | ||
bf6cb247 | 469 | #if defined(CONFIG_CMD_RARP) |
2d966958 | 470 | case RARP: |
698d78e5 | 471 | rarp_try = 0; |
049a95a7 | 472 | net_ip.s_addr = 0; |
698d78e5 | 473 | rarp_request(); |
2d966958 | 474 | break; |
bf6cb247 | 475 | #endif |
643d1ab2 | 476 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 477 | case PING: |
a36b12f9 | 478 | ping_start(); |
73a8b27c | 479 | break; |
cbd8a35c | 480 | #endif |
643d1ab2 | 481 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 482 | case NFS: |
68c76a3a | 483 | nfs_start(); |
cbd8a35c | 484 | break; |
a3d991bd | 485 | #endif |
643d1ab2 | 486 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 487 | case CDP: |
6aede5b7 | 488 | cdp_start(); |
a3d991bd | 489 | break; |
68ceb29e | 490 | #endif |
bc0571fc | 491 | #if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD) |
68ceb29e | 492 | case NETCONS: |
6a38a5f3 | 493 | nc_start(); |
68ceb29e | 494 | break; |
ea287deb | 495 | #endif |
643d1ab2 | 496 | #if defined(CONFIG_CMD_SNTP) |
ea287deb | 497 | case SNTP: |
38ba2558 | 498 | sntp_start(); |
ea287deb | 499 | break; |
1a32bf41 RG |
500 | #endif |
501 | #if defined(CONFIG_CMD_DNS) | |
502 | case DNS: | |
786eac5f | 503 | dns_start(); |
1a32bf41 | 504 | break; |
d22c338e JH |
505 | #endif |
506 | #if defined(CONFIG_CMD_LINK_LOCAL) | |
507 | case LINKLOCAL: | |
508 | link_local_start(); | |
509 | break; | |
73a8b27c | 510 | #endif |
2d966958 WD |
511 | default: |
512 | break; | |
513 | } | |
514 | ||
2d966958 WD |
515 | break; |
516 | } | |
517 | ||
643d1ab2 | 518 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
3e38e429 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 | */ |
d3c65b01 | 525 | if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) |
4f63acd0 | 526 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
d3c65b01 | 527 | else |
4f63acd0 | 528 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
6d0f6bcf | 529 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 530 | #endif /* CONFIG_MII, ... */ |
b63056d6 JL |
531 | #ifdef CONFIG_USB_KEYBOARD |
532 | net_busy_flag = 1; | |
533 | #endif | |
2d966958 WD |
534 | |
535 | /* | |
536 | * Main packet reception loop. Loop receiving packets until | |
22f6e99d | 537 | * someone sets `net_state' to a state that terminates. |
2d966958 WD |
538 | */ |
539 | for (;;) { | |
540 | WATCHDOG_RESET(); | |
541 | #ifdef CONFIG_SHOW_ACTIVITY | |
48522bb5 | 542 | show_activity(1); |
2d966958 WD |
543 | #endif |
544 | /* | |
545 | * Check the ethernet for a new packet. The ethernet | |
546 | * receive routine will process it. | |
60304592 JH |
547 | * Most drivers return the most recent packet size, but not |
548 | * errors that may have happened. | |
2d966958 | 549 | */ |
40cb90ee | 550 | eth_rx(); |
2d966958 WD |
551 | |
552 | /* | |
553 | * Abort if ctrl-c was pressed. | |
554 | */ | |
555 | if (ctrlc()) { | |
e94070c4 | 556 | /* cancel any ARP that may not have completed */ |
049a95a7 | 557 | net_arp_wait_packet_ip.s_addr = 0; |
e94070c4 | 558 | |
ece223b5 | 559 | net_cleanup_loop(); |
8bde7f77 | 560 | eth_halt(); |
f8be7d65 JH |
561 | /* Invalidate the last protocol */ |
562 | eth_set_last_protocol(BOOTP); | |
563 | ||
4f63acd0 | 564 | puts("\nAbort\n"); |
4ef8d53c JH |
565 | /* include a debug print as well incase the debug |
566 | messages are directed to stderr */ | |
bc0571fc | 567 | debug_cond(DEBUG_INT_STATE, "--- net_loop Abort!\n"); |
4793ee65 | 568 | goto done; |
2d966958 WD |
569 | } |
570 | ||
85d25e0e | 571 | arp_timeout_check(); |
2d966958 WD |
572 | |
573 | /* | |
574 | * Check for a timeout, and run the timeout handler | |
575 | * if we have one. | |
576 | */ | |
bc0571fc JH |
577 | if (time_handler && |
578 | ((get_timer(0) - time_start) > time_delta)) { | |
2d966958 WD |
579 | thand_f *x; |
580 | ||
643d1ab2 | 581 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
4f63acd0 LC |
582 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
583 | defined(CONFIG_STATUS_LED) && \ | |
584 | defined(STATUS_LED_RED) | |
fc3e2165 | 585 | /* |
42d1f039 | 586 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 587 | */ |
4f63acd0 | 588 | if (miiphy_link(eth_get_dev()->name, |
bc0571fc | 589 | CONFIG_SYS_FAULT_MII_ADDR)) |
4f63acd0 | 590 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
bc0571fc | 591 | else |
4f63acd0 | 592 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
4f63acd0 | 593 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 594 | #endif /* CONFIG_MII, ... */ |
bc0571fc JH |
595 | debug_cond(DEBUG_INT_STATE, "--- net_loop timeout\n"); |
596 | x = time_handler; | |
597 | time_handler = (thand_f *)0; | |
2d966958 WD |
598 | (*x)(); |
599 | } | |
600 | ||
5c421331 | 601 | if (net_state == NETLOOP_FAIL) |
bc0571fc | 602 | ret = net_start_again(); |
2d966958 | 603 | |
22f6e99d | 604 | switch (net_state) { |
2d966958 | 605 | case NETLOOP_RESTART: |
bc0571fc | 606 | net_restarted = 1; |
2d966958 WD |
607 | goto restart; |
608 | ||
609 | case NETLOOP_SUCCESS: | |
ece223b5 | 610 | net_cleanup_loop(); |
1411157d JH |
611 | if (net_boot_file_size > 0) { |
612 | printf("Bytes transferred = %d (%x hex)\n", | |
613 | net_boot_file_size, net_boot_file_size); | |
614 | setenv_hex("filesize", net_boot_file_size); | |
978226da | 615 | setenv_hex("fileaddr", load_addr); |
2d966958 | 616 | } |
f8be7d65 JH |
617 | if (protocol != NETCONS) |
618 | eth_halt(); | |
619 | else | |
620 | eth_halt_state_only(); | |
621 | ||
622 | eth_set_last_protocol(protocol); | |
623 | ||
1411157d | 624 | ret = net_boot_file_size; |
bc0571fc | 625 | debug_cond(DEBUG_INT_STATE, "--- net_loop Success!\n"); |
4793ee65 | 626 | goto done; |
2d966958 WD |
627 | |
628 | case NETLOOP_FAIL: | |
ece223b5 | 629 | net_cleanup_loop(); |
f8be7d65 JH |
630 | /* Invalidate the last protocol */ |
631 | eth_set_last_protocol(BOOTP); | |
bc0571fc | 632 | debug_cond(DEBUG_INT_STATE, "--- net_loop Fail!\n"); |
4793ee65 | 633 | goto done; |
22f6e99d JH |
634 | |
635 | case NETLOOP_CONTINUE: | |
636 | continue; | |
2d966958 WD |
637 | } |
638 | } | |
4793ee65 SG |
639 | |
640 | done: | |
b63056d6 JL |
641 | #ifdef CONFIG_USB_KEYBOARD |
642 | net_busy_flag = 0; | |
643 | #endif | |
39bccd21 | 644 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 | 645 | /* Clear out the handlers */ |
ece223b5 | 646 | net_set_udp_handler(NULL); |
4793ee65 | 647 | net_set_icmp_handler(NULL); |
39bccd21 | 648 | #endif |
4793ee65 | 649 | return ret; |
2d966958 WD |
650 | } |
651 | ||
652 | /**********************************************************************/ | |
653 | ||
bc0571fc | 654 | static void start_again_timeout_handler(void) |
2d966958 | 655 | { |
22f6e99d | 656 | net_set_state(NETLOOP_RESTART); |
2d966958 WD |
657 | } |
658 | ||
bc0571fc | 659 | int net_start_again(void) |
2d966958 | 660 | { |
6e592385 | 661 | char *nretry; |
67b96e87 RB |
662 | int retry_forever = 0; |
663 | unsigned long retrycnt = 0; | |
60304592 | 664 | int ret; |
67b96e87 RB |
665 | |
666 | nretry = getenv("netretry"); | |
667 | if (nretry) { | |
668 | if (!strcmp(nretry, "yes")) | |
669 | retry_forever = 1; | |
670 | else if (!strcmp(nretry, "no")) | |
671 | retrycnt = 0; | |
672 | else if (!strcmp(nretry, "once")) | |
673 | retrycnt = 1; | |
674 | else | |
675 | retrycnt = simple_strtoul(nretry, NULL, 0); | |
5c421331 JH |
676 | } else { |
677 | retrycnt = 0; | |
678 | retry_forever = 0; | |
679 | } | |
67b96e87 | 680 | |
bc0571fc | 681 | if ((!retry_forever) && (net_try_count >= retrycnt)) { |
67b96e87 | 682 | eth_halt(); |
22f6e99d | 683 | net_set_state(NETLOOP_FAIL); |
60304592 JH |
684 | /* |
685 | * We don't provide a way for the protocol to return an error, | |
686 | * but this is almost always the reason. | |
687 | */ | |
688 | return -ETIMEDOUT; | |
a3d991bd | 689 | } |
67b96e87 | 690 | |
bc0571fc | 691 | net_try_count++; |
67b96e87 | 692 | |
4f63acd0 | 693 | eth_halt(); |
8b0c5c12 | 694 | #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER) |
bc0571fc | 695 | eth_try_another(!net_restarted); |
8b0c5c12 | 696 | #endif |
60304592 | 697 | ret = eth_init(); |
bc0571fc JH |
698 | if (net_restart_wrap) { |
699 | net_restart_wrap = 0; | |
700 | if (net_dev_exists) { | |
701 | net_set_timeout_handler(10000UL, | |
702 | start_again_timeout_handler); | |
ece223b5 | 703 | net_set_udp_handler(NULL); |
6e592385 | 704 | } else { |
22f6e99d | 705 | net_set_state(NETLOOP_FAIL); |
2d966958 | 706 | } |
6e592385 | 707 | } else { |
22f6e99d | 708 | net_set_state(NETLOOP_RESTART); |
2d966958 | 709 | } |
60304592 | 710 | return ret; |
2d966958 WD |
711 | } |
712 | ||
713 | /**********************************************************************/ | |
714 | /* | |
715 | * Miscelaneous bits. | |
716 | */ | |
717 | ||
ece223b5 | 718 | static void dummy_handler(uchar *pkt, unsigned dport, |
049a95a7 | 719 | struct in_addr sip, unsigned sport, |
ece223b5 | 720 | unsigned len) |
d280d3f4 | 721 | { |
d280d3f4 JH |
722 | } |
723 | ||
ece223b5 JH |
724 | rxhand_f *net_get_udp_handler(void) |
725 | { | |
726 | return udp_packet_handler; | |
727 | } | |
d280d3f4 | 728 | |
ece223b5 JH |
729 | void net_set_udp_handler(rxhand_f *f) |
730 | { | |
bc0571fc | 731 | debug_cond(DEBUG_INT_STATE, "--- net_loop UDP handler set (%p)\n", f); |
ece223b5 JH |
732 | if (f == NULL) |
733 | udp_packet_handler = dummy_handler; | |
734 | else | |
735 | udp_packet_handler = f; | |
736 | } | |
737 | ||
738 | rxhand_f *net_get_arp_handler(void) | |
2d966958 | 739 | { |
ece223b5 JH |
740 | return arp_packet_handler; |
741 | } | |
742 | ||
743 | void net_set_arp_handler(rxhand_f *f) | |
744 | { | |
bc0571fc | 745 | debug_cond(DEBUG_INT_STATE, "--- net_loop ARP handler set (%p)\n", f); |
ece223b5 JH |
746 | if (f == NULL) |
747 | arp_packet_handler = dummy_handler; | |
748 | else | |
749 | arp_packet_handler = f; | |
2d966958 WD |
750 | } |
751 | ||
39bccd21 | 752 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
753 | void net_set_icmp_handler(rxhand_icmp_f *f) |
754 | { | |
755 | packet_icmp_handler = f; | |
756 | } | |
39bccd21 | 757 | #endif |
2d966958 | 758 | |
bc0571fc | 759 | void net_set_timeout_handler(ulong iv, thand_f *f) |
2d966958 WD |
760 | { |
761 | if (iv == 0) { | |
4ef8d53c | 762 | debug_cond(DEBUG_INT_STATE, |
bc0571fc JH |
763 | "--- net_loop timeout handler cancelled\n"); |
764 | time_handler = (thand_f *)0; | |
2d966958 | 765 | } else { |
4ef8d53c | 766 | debug_cond(DEBUG_INT_STATE, |
bc0571fc JH |
767 | "--- net_loop timeout handler set (%p)\n", f); |
768 | time_handler = f; | |
769 | time_start = get_timer(0); | |
770 | time_delta = iv * CONFIG_SYS_HZ / 1000; | |
2d966958 WD |
771 | } |
772 | } | |
773 | ||
1203fcce | 774 | int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport, |
206d07fd | 775 | int payload_len) |
73a8b27c | 776 | { |
a3d991bd | 777 | uchar *pkt; |
9214637a JH |
778 | int eth_hdr_size; |
779 | int pkt_hdr_size; | |
a3d991bd | 780 | |
bc0571fc | 781 | /* make sure the net_tx_packet is initialized (net_init() was called) */ |
1203fcce JH |
782 | assert(net_tx_packet != NULL); |
783 | if (net_tx_packet == NULL) | |
46c495d5 JH |
784 | return -1; |
785 | ||
73a8b27c | 786 | /* convert to new style broadcast */ |
049a95a7 JH |
787 | if (dest.s_addr == 0) |
788 | dest.s_addr = 0xFFFFFFFF; | |
73a8b27c WD |
789 | |
790 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
049a95a7 | 791 | if (dest.s_addr == 0xFFFFFFFF) |
0adb5b76 | 792 | ether = (uchar *)net_bcast_ethaddr; |
73a8b27c | 793 | |
1203fcce | 794 | pkt = (uchar *)net_tx_packet; |
9214637a | 795 | |
1203fcce | 796 | eth_hdr_size = net_set_ether(pkt, ether, PROT_IP); |
9214637a JH |
797 | pkt += eth_hdr_size; |
798 | net_set_udp_header(pkt, dest, dport, sport, payload_len); | |
799 | pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE; | |
73a8b27c | 800 | |
e94070c4 | 801 | /* if MAC address was not discovered yet, do an ARP request */ |
0adb5b76 | 802 | if (memcmp(ether, net_null_ethaddr, 6) == 0) { |
4ef8d53c | 803 | debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest); |
0ebf04c6 | 804 | |
9214637a | 805 | /* save the ip and eth addr for the packet to send after arp */ |
049a95a7 | 806 | net_arp_wait_packet_ip = dest; |
85d25e0e | 807 | arp_wait_packet_ethaddr = ether; |
a3d991bd | 808 | |
73a8b27c | 809 | /* size of the waiting packet */ |
85d25e0e | 810 | arp_wait_tx_packet_size = pkt_hdr_size + payload_len; |
73a8b27c WD |
811 | |
812 | /* and do the ARP request */ | |
85d25e0e JH |
813 | arp_wait_try = 1; |
814 | arp_wait_timer_start = get_timer(0); | |
815 | arp_request(); | |
73a8b27c | 816 | return 1; /* waiting */ |
9214637a | 817 | } else { |
4ef8d53c | 818 | debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n", |
bc0571fc | 819 | &dest, ether); |
1203fcce | 820 | net_send_packet(net_tx_packet, pkt_hdr_size + payload_len); |
9214637a | 821 | return 0; /* transmitted */ |
73a8b27c | 822 | } |
73a8b27c WD |
823 | } |
824 | ||
5cfaa4e5 AR |
825 | #ifdef CONFIG_IP_DEFRAG |
826 | /* | |
827 | * This function collects fragments in a single packet, according | |
828 | * to the algorithm in RFC815. It returns NULL or the pointer to | |
829 | * a complete packet, in static storage | |
830 | */ | |
831 | #ifndef CONFIG_NET_MAXDEFRAG | |
832 | #define CONFIG_NET_MAXDEFRAG 16384 | |
833 | #endif | |
834 | /* | |
835 | * MAXDEFRAG, above, is chosen in the config file and is real data | |
836 | * so we need to add the NFS overhead, which is more than TFTP. | |
837 | * To use sizeof in the internal unnamed structures, we need a real | |
838 | * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately). | |
839 | * The compiler doesn't complain nor allocates the actual structure | |
840 | */ | |
841 | static struct rpc_t rpc_specimen; | |
842 | #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply)) | |
843 | ||
c5c59df0 | 844 | #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE) |
5cfaa4e5 AR |
845 | |
846 | /* | |
847 | * this is the packet being assembled, either data or frag control. | |
848 | * Fragments go by 8 bytes, so this union must be 8 bytes long | |
849 | */ | |
850 | struct hole { | |
851 | /* first_byte is address of this structure */ | |
852 | u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */ | |
853 | u16 next_hole; /* index of next (in 8-b blocks), 0 == none */ | |
854 | u16 prev_hole; /* index of prev, 0 == none */ | |
855 | u16 unused; | |
856 | }; | |
857 | ||
bc0571fc | 858 | static struct ip_udp_hdr *__net_defragment(struct ip_udp_hdr *ip, int *lenp) |
5cfaa4e5 | 859 | { |
48522bb5 | 860 | static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN); |
5cfaa4e5 AR |
861 | static u16 first_hole, total_len; |
862 | struct hole *payload, *thisfrag, *h, *newh; | |
594c26f8 | 863 | struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff; |
5cfaa4e5 AR |
864 | uchar *indata = (uchar *)ip; |
865 | int offset8, start, len, done = 0; | |
866 | u16 ip_off = ntohs(ip->ip_off); | |
867 | ||
868 | /* payload starts after IP header, this fragment is in there */ | |
c5c59df0 | 869 | payload = (struct hole *)(pkt_buff + IP_HDR_SIZE); |
5cfaa4e5 AR |
870 | offset8 = (ip_off & IP_OFFS); |
871 | thisfrag = payload + offset8; | |
872 | start = offset8 * 8; | |
c5c59df0 | 873 | len = ntohs(ip->ip_len) - IP_HDR_SIZE; |
5cfaa4e5 AR |
874 | |
875 | if (start + len > IP_MAXUDP) /* fragment extends too far */ | |
876 | return NULL; | |
877 | ||
878 | if (!total_len || localip->ip_id != ip->ip_id) { | |
879 | /* new (or different) packet, reset structs */ | |
880 | total_len = 0xffff; | |
881 | payload[0].last_byte = ~0; | |
882 | payload[0].next_hole = 0; | |
883 | payload[0].prev_hole = 0; | |
884 | first_hole = 0; | |
885 | /* any IP header will work, copy the first we received */ | |
c5c59df0 | 886 | memcpy(localip, ip, IP_HDR_SIZE); |
5cfaa4e5 AR |
887 | } |
888 | ||
889 | /* | |
890 | * What follows is the reassembly algorithm. We use the payload | |
891 | * array as a linked list of hole descriptors, as each hole starts | |
892 | * at a multiple of 8 bytes. However, last byte can be whatever value, | |
893 | * so it is represented as byte count, not as 8-byte blocks. | |
894 | */ | |
895 | ||
896 | h = payload + first_hole; | |
897 | while (h->last_byte < start) { | |
898 | if (!h->next_hole) { | |
899 | /* no hole that far away */ | |
900 | return NULL; | |
901 | } | |
902 | h = payload + h->next_hole; | |
903 | } | |
904 | ||
e397e59e FS |
905 | /* last fragment may be 1..7 bytes, the "+7" forces acceptance */ |
906 | if (offset8 + ((len + 7) / 8) <= h - payload) { | |
5cfaa4e5 AR |
907 | /* no overlap with holes (dup fragment?) */ |
908 | return NULL; | |
909 | } | |
910 | ||
911 | if (!(ip_off & IP_FLAGS_MFRAG)) { | |
912 | /* no more fragmentss: truncate this (last) hole */ | |
913 | total_len = start + len; | |
914 | h->last_byte = start + len; | |
915 | } | |
916 | ||
917 | /* | |
918 | * There is some overlap: fix the hole list. This code doesn't | |
919 | * deal with a fragment that overlaps with two different holes | |
920 | * (thus being a superset of a previously-received fragment). | |
921 | */ | |
922 | ||
4f63acd0 | 923 | if ((h >= thisfrag) && (h->last_byte <= start + len)) { |
5cfaa4e5 AR |
924 | /* complete overlap with hole: remove hole */ |
925 | if (!h->prev_hole && !h->next_hole) { | |
926 | /* last remaining hole */ | |
927 | done = 1; | |
928 | } else if (!h->prev_hole) { | |
929 | /* first hole */ | |
930 | first_hole = h->next_hole; | |
931 | payload[h->next_hole].prev_hole = 0; | |
932 | } else if (!h->next_hole) { | |
933 | /* last hole */ | |
934 | payload[h->prev_hole].next_hole = 0; | |
935 | } else { | |
936 | /* in the middle of the list */ | |
937 | payload[h->next_hole].prev_hole = h->prev_hole; | |
938 | payload[h->prev_hole].next_hole = h->next_hole; | |
939 | } | |
940 | ||
941 | } else if (h->last_byte <= start + len) { | |
942 | /* overlaps with final part of the hole: shorten this hole */ | |
943 | h->last_byte = start; | |
944 | ||
945 | } else if (h >= thisfrag) { | |
946 | /* overlaps with initial part of the hole: move this hole */ | |
947 | newh = thisfrag + (len / 8); | |
948 | *newh = *h; | |
949 | h = newh; | |
950 | if (h->next_hole) | |
951 | payload[h->next_hole].prev_hole = (h - payload); | |
952 | if (h->prev_hole) | |
953 | payload[h->prev_hole].next_hole = (h - payload); | |
954 | else | |
955 | first_hole = (h - payload); | |
956 | ||
957 | } else { | |
958 | /* fragment sits in the middle: split the hole */ | |
959 | newh = thisfrag + (len / 8); | |
960 | *newh = *h; | |
961 | h->last_byte = start; | |
962 | h->next_hole = (newh - payload); | |
963 | newh->prev_hole = (h - payload); | |
964 | if (newh->next_hole) | |
965 | payload[newh->next_hole].prev_hole = (newh - payload); | |
966 | } | |
967 | ||
968 | /* finally copy this fragment and possibly return whole packet */ | |
c5c59df0 | 969 | memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len); |
5cfaa4e5 AR |
970 | if (!done) |
971 | return NULL; | |
972 | ||
973 | localip->ip_len = htons(total_len); | |
c5c59df0 | 974 | *lenp = total_len + IP_HDR_SIZE; |
5cfaa4e5 AR |
975 | return localip; |
976 | } | |
977 | ||
bc0571fc JH |
978 | static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip, |
979 | int *lenp) | |
5cfaa4e5 AR |
980 | { |
981 | u16 ip_off = ntohs(ip->ip_off); | |
982 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
983 | return ip; /* not a fragment */ | |
bc0571fc | 984 | return __net_defragment(ip, lenp); |
5cfaa4e5 AR |
985 | } |
986 | ||
987 | #else /* !CONFIG_IP_DEFRAG */ | |
988 | ||
bc0571fc JH |
989 | static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip, |
990 | int *lenp) | |
5cfaa4e5 AR |
991 | { |
992 | u16 ip_off = ntohs(ip->ip_off); | |
993 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
994 | return ip; /* not a fragment */ | |
995 | return NULL; | |
996 | } | |
997 | #endif | |
a3d991bd | 998 | |
8f79bb17 SG |
999 | /** |
1000 | * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently | |
1001 | * drop others. | |
1002 | * | |
1003 | * @parma ip IP packet containing the ICMP | |
1004 | */ | |
594c26f8 | 1005 | static void receive_icmp(struct ip_udp_hdr *ip, int len, |
049a95a7 | 1006 | struct in_addr src_ip, struct ethernet_hdr *et) |
8f79bb17 | 1007 | { |
e0a63079 | 1008 | struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src; |
8f79bb17 SG |
1009 | |
1010 | switch (icmph->type) { | |
1011 | case ICMP_REDIRECT: | |
1012 | if (icmph->code != ICMP_REDIR_HOST) | |
1013 | return; | |
1014 | printf(" ICMP Host Redirect to %pI4 ", | |
bc0571fc | 1015 | &icmph->un.gateway); |
8f79bb17 | 1016 | break; |
a36b12f9 | 1017 | default: |
8f79bb17 | 1018 | #if defined(CONFIG_CMD_PING) |
a36b12f9 | 1019 | ping_receive(et, ip, len); |
8f79bb17 | 1020 | #endif |
39bccd21 | 1021 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
1022 | if (packet_icmp_handler) |
1023 | packet_icmp_handler(icmph->type, icmph->code, | |
bc0571fc JH |
1024 | ntohs(ip->udp_dst), src_ip, |
1025 | ntohs(ip->udp_src), icmph->un.data, | |
1026 | ntohs(ip->udp_len)); | |
39bccd21 | 1027 | #endif |
8f79bb17 SG |
1028 | break; |
1029 | } | |
1030 | } | |
1031 | ||
2a504df0 | 1032 | void net_process_received_packet(uchar *in_packet, int len) |
2d966958 | 1033 | { |
cb487f56 | 1034 | struct ethernet_hdr *et; |
594c26f8 | 1035 | struct ip_udp_hdr *ip; |
049a95a7 JH |
1036 | struct in_addr dst_ip; |
1037 | struct in_addr src_ip; | |
8d353eb8 | 1038 | int eth_proto; |
643d1ab2 | 1039 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1040 | int iscdp; |
1041 | #endif | |
1042 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
1043 | ||
4ef8d53c | 1044 | debug_cond(DEBUG_NET_PKT, "packet received\n"); |
2d966958 | 1045 | |
1203fcce JH |
1046 | net_rx_packet = in_packet; |
1047 | net_rx_packet_len = len; | |
2a504df0 | 1048 | et = (struct ethernet_hdr *)in_packet; |
a3d991bd WD |
1049 | |
1050 | /* too small packet? */ | |
1051 | if (len < ETHER_HDR_SIZE) | |
1052 | return; | |
1053 | ||
f85b6071 RJ |
1054 | #ifdef CONFIG_API |
1055 | if (push_packet) { | |
2a504df0 | 1056 | (*push_packet)(in_packet, len); |
f85b6071 RJ |
1057 | return; |
1058 | } | |
1059 | #endif | |
1060 | ||
643d1ab2 | 1061 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 1062 | /* keep track if packet is CDP */ |
17351883 | 1063 | iscdp = is_cdp_packet(et->et_dest); |
a3d991bd WD |
1064 | #endif |
1065 | ||
4fd5055f | 1066 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1067 | if (myvlanid == (ushort)-1) |
1068 | myvlanid = VLAN_NONE; | |
4fd5055f | 1069 | mynvlanid = ntohs(net_native_vlan); |
a3d991bd WD |
1070 | if (mynvlanid == (ushort)-1) |
1071 | mynvlanid = VLAN_NONE; | |
2d966958 | 1072 | |
8d353eb8 | 1073 | eth_proto = ntohs(et->et_protlen); |
2d966958 | 1074 | |
8d353eb8 | 1075 | if (eth_proto < 1514) { |
cb487f56 | 1076 | struct e802_hdr *et802 = (struct e802_hdr *)et; |
2d966958 | 1077 | /* |
da5ebe2c JH |
1078 | * Got a 802.2 packet. Check the other protocol field. |
1079 | * XXX VLAN over 802.2+SNAP not implemented! | |
2d966958 | 1080 | */ |
8d353eb8 | 1081 | eth_proto = ntohs(et802->et_prot); |
a3d991bd | 1082 | |
2a504df0 | 1083 | ip = (struct ip_udp_hdr *)(in_packet + E802_HDR_SIZE); |
2d966958 | 1084 | len -= E802_HDR_SIZE; |
a3d991bd | 1085 | |
8d353eb8 | 1086 | } else if (eth_proto != PROT_VLAN) { /* normal packet */ |
2a504df0 | 1087 | ip = (struct ip_udp_hdr *)(in_packet + ETHER_HDR_SIZE); |
2d966958 | 1088 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
1089 | |
1090 | } else { /* VLAN packet */ | |
c68cca35 JH |
1091 | struct vlan_ethernet_hdr *vet = |
1092 | (struct vlan_ethernet_hdr *)et; | |
a3d991bd | 1093 | |
4ef8d53c | 1094 | debug_cond(DEBUG_NET_PKT, "VLAN packet received\n"); |
0ebf04c6 | 1095 | |
a3d991bd WD |
1096 | /* too small packet? */ |
1097 | if (len < VLAN_ETHER_HDR_SIZE) | |
1098 | return; | |
1099 | ||
1100 | /* if no VLAN active */ | |
4fd5055f | 1101 | if ((ntohs(net_our_vlan) & VLAN_IDMASK) == VLAN_NONE |
643d1ab2 | 1102 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1103 | && iscdp == 0 |
1104 | #endif | |
1105 | ) | |
1106 | return; | |
1107 | ||
1108 | cti = ntohs(vet->vet_tag); | |
1109 | vlanid = cti & VLAN_IDMASK; | |
8d353eb8 | 1110 | eth_proto = ntohs(vet->vet_type); |
a3d991bd | 1111 | |
2a504df0 | 1112 | ip = (struct ip_udp_hdr *)(in_packet + VLAN_ETHER_HDR_SIZE); |
a3d991bd | 1113 | len -= VLAN_ETHER_HDR_SIZE; |
2d966958 WD |
1114 | } |
1115 | ||
4ef8d53c | 1116 | debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto); |
2d966958 | 1117 | |
643d1ab2 | 1118 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 1119 | if (iscdp) { |
0b4c5ff4 | 1120 | cdp_receive((uchar *)ip, len); |
a3d991bd WD |
1121 | return; |
1122 | } | |
1123 | #endif | |
1124 | ||
1125 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
1126 | if (vlanid == VLAN_NONE) | |
1127 | vlanid = (mynvlanid & VLAN_IDMASK); | |
1128 | /* not matched? */ | |
1129 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
1130 | return; | |
1131 | } | |
1132 | ||
8d353eb8 | 1133 | switch (eth_proto) { |
2d966958 | 1134 | case PROT_ARP: |
85d25e0e | 1135 | arp_receive(et, ip, len); |
289f932c | 1136 | break; |
2d966958 | 1137 | |
bf6cb247 | 1138 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1139 | case PROT_RARP: |
8b9c5322 | 1140 | rarp_receive(ip, len); |
2d966958 | 1141 | break; |
bf6cb247 | 1142 | #endif |
2d966958 | 1143 | case PROT_IP: |
4ef8d53c | 1144 | debug_cond(DEBUG_NET_PKT, "Got IP\n"); |
5cfaa4e5 | 1145 | /* Before we start poking the header, make sure it is there */ |
594c26f8 JH |
1146 | if (len < IP_UDP_HDR_SIZE) { |
1147 | debug("len bad %d < %lu\n", len, | |
bc0571fc | 1148 | (ulong)IP_UDP_HDR_SIZE); |
2d966958 WD |
1149 | return; |
1150 | } | |
5cfaa4e5 | 1151 | /* Check the packet length */ |
2d966958 | 1152 | if (len < ntohs(ip->ip_len)) { |
4ef8d53c | 1153 | debug("len bad %d < %d\n", len, ntohs(ip->ip_len)); |
2d966958 WD |
1154 | return; |
1155 | } | |
1156 | len = ntohs(ip->ip_len); | |
4ef8d53c | 1157 | debug_cond(DEBUG_NET_PKT, "len=%d, v=%02x\n", |
bc0571fc | 1158 | len, ip->ip_hl_v & 0xff); |
0ebf04c6 | 1159 | |
5cfaa4e5 | 1160 | /* Can't deal with anything except IPv4 */ |
d3c65b01 | 1161 | if ((ip->ip_hl_v & 0xf0) != 0x40) |
2d966958 | 1162 | return; |
5cfaa4e5 | 1163 | /* Can't deal with IP options (headers != 20 bytes) */ |
d3c65b01 | 1164 | if ((ip->ip_hl_v & 0x0f) > 0x05) |
6b52cfe1 | 1165 | return; |
5cfaa4e5 | 1166 | /* Check the Checksum of the header */ |
0da0fcd5 | 1167 | if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) { |
4ef8d53c | 1168 | debug("checksum bad\n"); |
2d966958 WD |
1169 | return; |
1170 | } | |
5cfaa4e5 | 1171 | /* If it is not for us, ignore it */ |
049a95a7 JH |
1172 | dst_ip = net_read_ip(&ip->ip_dst); |
1173 | if (net_ip.s_addr && dst_ip.s_addr != net_ip.s_addr && | |
1174 | dst_ip.s_addr != 0xFFFFFFFF) { | |
53a5c424 | 1175 | #ifdef CONFIG_MCAST_TFTP |
049a95a7 | 1176 | if (net_mcast_addr != dst_ip) |
53a5c424 | 1177 | #endif |
c819abee | 1178 | return; |
2d966958 | 1179 | } |
03eb129f | 1180 | /* Read source IP address for later use */ |
049a95a7 | 1181 | src_ip = net_read_ip(&ip->ip_src); |
5cfaa4e5 AR |
1182 | /* |
1183 | * The function returns the unchanged packet if it's not | |
1184 | * a fragment, and either the complete packet or NULL if | |
1185 | * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL) | |
1186 | */ | |
bc0571fc | 1187 | ip = net_defragment(ip, &len); |
ccb9ebef | 1188 | if (!ip) |
5cfaa4e5 | 1189 | return; |
2d966958 WD |
1190 | /* |
1191 | * watch for ICMP host redirects | |
1192 | * | |
8bde7f77 WD |
1193 | * There is no real handler code (yet). We just watch |
1194 | * for ICMP host redirect messages. In case anybody | |
1195 | * sees these messages: please contact me | |
1196 | * (wd@denx.de), or - even better - send me the | |
1197 | * necessary fixes :-) | |
2d966958 | 1198 | * |
8bde7f77 WD |
1199 | * Note: in all cases where I have seen this so far |
1200 | * it was a problem with the router configuration, | |
1201 | * for instance when a router was configured in the | |
1202 | * BOOTP reply, but the TFTP server was on the same | |
1203 | * subnet. So this is probably a warning that your | |
1204 | * configuration might be wrong. But I'm not really | |
1205 | * sure if there aren't any other situations. | |
4793ee65 SG |
1206 | * |
1207 | * Simon Glass <sjg@chromium.org>: We get an ICMP when | |
1208 | * we send a tftp packet to a dead connection, or when | |
1209 | * there is no server at the other end. | |
2d966958 WD |
1210 | */ |
1211 | if (ip->ip_p == IPPROTO_ICMP) { | |
8f79bb17 SG |
1212 | receive_icmp(ip, len, src_ip, et); |
1213 | return; | |
2d966958 WD |
1214 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1215 | return; | |
1216 | } | |
1217 | ||
4ef8d53c | 1218 | debug_cond(DEBUG_DEV_PKT, |
bc0571fc JH |
1219 | "received UDP (to=%pI4, from=%pI4, len=%d)\n", |
1220 | &dst_ip, &src_ip, len); | |
4ef8d53c | 1221 | |
8534bf9a SR |
1222 | #ifdef CONFIG_UDP_CHECKSUM |
1223 | if (ip->udp_xsum != 0) { | |
b2f50807 | 1224 | ulong xsum; |
8534bf9a SR |
1225 | ushort *sumptr; |
1226 | ushort sumlen; | |
1227 | ||
1228 | xsum = ip->ip_p; | |
1229 | xsum += (ntohs(ip->udp_len)); | |
049a95a7 JH |
1230 | xsum += (ntohl(ip->ip_src.s_addr) >> 16) & 0x0000ffff; |
1231 | xsum += (ntohl(ip->ip_src.s_addr) >> 0) & 0x0000ffff; | |
1232 | xsum += (ntohl(ip->ip_dst.s_addr) >> 16) & 0x0000ffff; | |
1233 | xsum += (ntohl(ip->ip_dst.s_addr) >> 0) & 0x0000ffff; | |
8534bf9a SR |
1234 | |
1235 | sumlen = ntohs(ip->udp_len); | |
bc0571fc | 1236 | sumptr = (ushort *)&(ip->udp_src); |
8534bf9a SR |
1237 | |
1238 | while (sumlen > 1) { | |
b2f50807 | 1239 | ushort sumdata; |
8534bf9a SR |
1240 | |
1241 | sumdata = *sumptr++; | |
1242 | xsum += ntohs(sumdata); | |
1243 | sumlen -= 2; | |
1244 | } | |
1245 | if (sumlen > 0) { | |
b2f50807 | 1246 | ushort sumdata; |
8534bf9a | 1247 | |
bc0571fc | 1248 | sumdata = *(unsigned char *)sumptr; |
b2f50807 | 1249 | sumdata = (sumdata << 8) & 0xff00; |
8534bf9a SR |
1250 | xsum += sumdata; |
1251 | } | |
1252 | while ((xsum >> 16) != 0) { | |
3e38e429 LC |
1253 | xsum = (xsum & 0x0000ffff) + |
1254 | ((xsum >> 16) & 0x0000ffff); | |
8534bf9a SR |
1255 | } |
1256 | if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) { | |
9b55a253 | 1257 | printf(" UDP wrong checksum %08lx %08x\n", |
bc0571fc | 1258 | xsum, ntohs(ip->udp_xsum)); |
8534bf9a SR |
1259 | return; |
1260 | } | |
1261 | } | |
1262 | #endif | |
1263 | ||
bc0571fc | 1264 | #if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD) |
594c26f8 | 1265 | nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE, |
bc0571fc JH |
1266 | src_ip, |
1267 | ntohs(ip->udp_dst), | |
1268 | ntohs(ip->udp_src), | |
1269 | ntohs(ip->udp_len) - UDP_HDR_SIZE); | |
68ceb29e | 1270 | #endif |
2d966958 | 1271 | /* |
bc0571fc | 1272 | * IP header OK. Pass the packet to the current handler. |
2d966958 | 1273 | */ |
ece223b5 | 1274 | (*udp_packet_handler)((uchar *)ip + IP_UDP_HDR_SIZE, |
bc0571fc JH |
1275 | ntohs(ip->udp_dst), |
1276 | src_ip, | |
1277 | ntohs(ip->udp_src), | |
1278 | ntohs(ip->udp_len) - UDP_HDR_SIZE); | |
2d966958 WD |
1279 | break; |
1280 | } | |
1281 | } | |
1282 | ||
2d966958 WD |
1283 | /**********************************************************************/ |
1284 | ||
e4bf0c5c | 1285 | static int net_check_prereq(enum proto_t protocol) |
2d966958 WD |
1286 | { |
1287 | switch (protocol) { | |
6e592385 | 1288 | /* Fall through */ |
643d1ab2 | 1289 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 1290 | case PING: |
049a95a7 | 1291 | if (net_ping_ip.s_addr == 0) { |
4f63acd0 | 1292 | puts("*** ERROR: ping address not given\n"); |
92895de9 | 1293 | return 1; |
6e592385 WD |
1294 | } |
1295 | goto common; | |
cbd8a35c | 1296 | #endif |
643d1ab2 | 1297 | #if defined(CONFIG_CMD_SNTP) |
ea287deb | 1298 | case SNTP: |
049a95a7 | 1299 | if (net_ntp_server.s_addr == 0) { |
4f63acd0 | 1300 | puts("*** ERROR: NTP server address not given\n"); |
92895de9 | 1301 | return 1; |
ea287deb WD |
1302 | } |
1303 | goto common; | |
1304 | #endif | |
1a32bf41 RG |
1305 | #if defined(CONFIG_CMD_DNS) |
1306 | case DNS: | |
049a95a7 | 1307 | if (net_dns_server.s_addr == 0) { |
1a32bf41 RG |
1308 | puts("*** ERROR: DNS server address not given\n"); |
1309 | return 1; | |
1310 | } | |
1311 | goto common; | |
1312 | #endif | |
643d1ab2 | 1313 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 1314 | case NFS: |
73a8b27c | 1315 | #endif |
bc0571fc | 1316 | /* Fall through */ |
e4bf0c5c | 1317 | case TFTPGET: |
1fb7cd49 | 1318 | case TFTPPUT: |
049a95a7 | 1319 | if (net_server_ip.s_addr == 0) { |
4f63acd0 | 1320 | puts("*** ERROR: `serverip' not set\n"); |
92895de9 | 1321 | return 1; |
6e592385 | 1322 | } |
4f63acd0 LC |
1323 | #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \ |
1324 | defined(CONFIG_CMD_DNS) | |
1325 | common: | |
73a8b27c | 1326 | #endif |
8b6bbe10 | 1327 | /* Fall through */ |
73a8b27c | 1328 | |
8b6bbe10 | 1329 | case NETCONS: |
7a83af07 | 1330 | case TFTPSRV: |
049a95a7 | 1331 | if (net_ip.s_addr == 0) { |
4f63acd0 | 1332 | puts("*** ERROR: `ipaddr' not set\n"); |
92895de9 | 1333 | return 1; |
6e592385 WD |
1334 | } |
1335 | /* Fall through */ | |
2d966958 | 1336 | |
bf6cb247 | 1337 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1338 | case RARP: |
bf6cb247 | 1339 | #endif |
2d966958 | 1340 | case BOOTP: |
a3d991bd | 1341 | case CDP: |
bf6cb247 | 1342 | case DHCP: |
d22c338e | 1343 | case LINKLOCAL: |
0adb5b76 | 1344 | if (memcmp(net_ethaddr, "\0\0\0\0\0\0", 6) == 0) { |
4f63acd0 | 1345 | int num = eth_get_dev_index(); |
2d966958 | 1346 | |
6e592385 WD |
1347 | switch (num) { |
1348 | case -1: | |
4f63acd0 | 1349 | puts("*** ERROR: No ethernet found.\n"); |
92895de9 | 1350 | return 1; |
6e592385 | 1351 | case 0: |
4f63acd0 | 1352 | puts("*** ERROR: `ethaddr' not set\n"); |
2d966958 | 1353 | break; |
6e592385 | 1354 | default: |
4f63acd0 | 1355 | printf("*** ERROR: `eth%daddr' not set\n", |
bc0571fc | 1356 | num); |
2d966958 | 1357 | break; |
6e592385 | 1358 | } |
2d966958 | 1359 | |
bc0571fc | 1360 | net_start_again(); |
92895de9 | 1361 | return 2; |
6e592385 WD |
1362 | } |
1363 | /* Fall through */ | |
1364 | default: | |
92895de9 | 1365 | return 0; |
2d966958 | 1366 | } |
92895de9 | 1367 | return 0; /* OK */ |
2d966958 WD |
1368 | } |
1369 | /**********************************************************************/ | |
1370 | ||
a3d991bd | 1371 | int |
1203fcce | 1372 | net_eth_hdr_size(void) |
a3d991bd WD |
1373 | { |
1374 | ushort myvlanid; | |
2d966958 | 1375 | |
4fd5055f | 1376 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1377 | if (myvlanid == (ushort)-1) |
1378 | myvlanid = VLAN_NONE; | |
1379 | ||
3e38e429 LC |
1380 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : |
1381 | VLAN_ETHER_HDR_SIZE; | |
a3d991bd WD |
1382 | } |
1383 | ||
1203fcce | 1384 | int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot) |
2d966958 | 1385 | { |
cb487f56 | 1386 | struct ethernet_hdr *et = (struct ethernet_hdr *)xet; |
a3d991bd WD |
1387 | ushort myvlanid; |
1388 | ||
4fd5055f | 1389 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1390 | if (myvlanid == (ushort)-1) |
1391 | myvlanid = VLAN_NONE; | |
2d966958 | 1392 | |
0adb5b76 JH |
1393 | memcpy(et->et_dest, dest_ethaddr, 6); |
1394 | memcpy(et->et_src, net_ethaddr, 6); | |
a3d991bd | 1395 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
c819abee | 1396 | et->et_protlen = htons(prot); |
a3d991bd WD |
1397 | return ETHER_HDR_SIZE; |
1398 | } else { | |
c68cca35 JH |
1399 | struct vlan_ethernet_hdr *vet = |
1400 | (struct vlan_ethernet_hdr *)xet; | |
2d966958 | 1401 | |
a3d991bd WD |
1402 | vet->vet_vlan_type = htons(PROT_VLAN); |
1403 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1404 | vet->vet_type = htons(prot); | |
1405 | return VLAN_ETHER_HDR_SIZE; | |
1406 | } | |
1407 | } | |
2d966958 | 1408 | |
e7111015 JH |
1409 | int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot) |
1410 | { | |
1411 | ushort protlen; | |
1412 | ||
1413 | memcpy(et->et_dest, addr, 6); | |
0adb5b76 | 1414 | memcpy(et->et_src, net_ethaddr, 6); |
e7111015 JH |
1415 | protlen = ntohs(et->et_protlen); |
1416 | if (protlen == PROT_VLAN) { | |
1417 | struct vlan_ethernet_hdr *vet = | |
1418 | (struct vlan_ethernet_hdr *)et; | |
1419 | vet->vet_type = htons(prot); | |
1420 | return VLAN_ETHER_HDR_SIZE; | |
1421 | } else if (protlen > 1514) { | |
1422 | et->et_protlen = htons(prot); | |
1423 | return ETHER_HDR_SIZE; | |
1424 | } else { | |
1425 | /* 802.2 + SNAP */ | |
1426 | struct e802_hdr *et802 = (struct e802_hdr *)et; | |
1427 | et802->et_prot = htons(prot); | |
1428 | return E802_HDR_SIZE; | |
1429 | } | |
1430 | } | |
1431 | ||
049a95a7 | 1432 | void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source) |
2d966958 | 1433 | { |
4b11c916 | 1434 | struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt; |
2d966958 WD |
1435 | |
1436 | /* | |
4b11c916 | 1437 | * Construct an IP header. |
2d966958 | 1438 | */ |
3e38e429 LC |
1439 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
1440 | ip->ip_hl_v = 0x45; | |
2d966958 | 1441 | ip->ip_tos = 0; |
4b11c916 | 1442 | ip->ip_len = htons(IP_HDR_SIZE); |
bc0571fc | 1443 | ip->ip_id = htons(net_ip_id++); |
e0c07b86 | 1444 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
2d966958 | 1445 | ip->ip_ttl = 255; |
2d966958 | 1446 | ip->ip_sum = 0; |
3e38e429 | 1447 | /* already in network byte order */ |
049a95a7 | 1448 | net_copy_ip((void *)&ip->ip_src, &source); |
4b11c916 | 1449 | /* already in network byte order */ |
049a95a7 | 1450 | net_copy_ip((void *)&ip->ip_dst, &dest); |
4b11c916 JH |
1451 | } |
1452 | ||
049a95a7 | 1453 | void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport, |
4b11c916 JH |
1454 | int len) |
1455 | { | |
1456 | struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt; | |
1457 | ||
1458 | /* | |
1459 | * If the data is an odd number of bytes, zero the | |
1460 | * byte after the last byte so that the checksum | |
1461 | * will work. | |
1462 | */ | |
1463 | if (len & 1) | |
1464 | pkt[IP_UDP_HDR_SIZE + len] = 0; | |
1465 | ||
049a95a7 | 1466 | net_set_ip_header(pkt, dest, net_ip); |
4b11c916 JH |
1467 | ip->ip_len = htons(IP_UDP_HDR_SIZE + len); |
1468 | ip->ip_p = IPPROTO_UDP; | |
0da0fcd5 | 1469 | ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE); |
4b11c916 | 1470 | |
2d966958 WD |
1471 | ip->udp_src = htons(sport); |
1472 | ip->udp_dst = htons(dport); | |
594c26f8 | 1473 | ip->udp_len = htons(UDP_HDR_SIZE + len); |
2d966958 | 1474 | ip->udp_xsum = 0; |
2d966958 WD |
1475 | } |
1476 | ||
4f63acd0 | 1477 | void copy_filename(char *dst, const char *src, int size) |
2d966958 WD |
1478 | { |
1479 | if (*src && (*src == '"')) { | |
1480 | ++src; | |
1481 | --size; | |
1482 | } | |
1483 | ||
d3c65b01 | 1484 | while ((--size > 0) && *src && (*src != '"')) |
2d966958 | 1485 | *dst++ = *src++; |
2d966958 WD |
1486 | *dst = '\0'; |
1487 | } | |
1488 | ||
3e38e429 LC |
1489 | #if defined(CONFIG_CMD_NFS) || \ |
1490 | defined(CONFIG_CMD_SNTP) || \ | |
1491 | defined(CONFIG_CMD_DNS) | |
1a32bf41 | 1492 | /* |
9739946c RG |
1493 | * make port a little random (1024-17407) |
1494 | * This keeps the math somewhat trivial to compute, and seems to work with | |
1495 | * all supported protocols/clients/servers | |
1a32bf41 RG |
1496 | */ |
1497 | unsigned int random_port(void) | |
1498 | { | |
9739946c | 1499 | return 1024 + (get_timer(0) % 0x4000); |
1a32bf41 RG |
1500 | } |
1501 | #endif | |
1502 | ||
049a95a7 | 1503 | void ip_to_string(struct in_addr x, char *s) |
2d966958 | 1504 | { |
049a95a7 | 1505 | x.s_addr = ntohl(x.s_addr); |
4f63acd0 | 1506 | sprintf(s, "%d.%d.%d.%d", |
049a95a7 JH |
1507 | (int) ((x.s_addr >> 24) & 0xff), |
1508 | (int) ((x.s_addr >> 16) & 0xff), | |
1509 | (int) ((x.s_addr >> 8) & 0xff), | |
1510 | (int) ((x.s_addr >> 0) & 0xff) | |
6e592385 | 1511 | ); |
2d966958 WD |
1512 | } |
1513 | ||
4fd5055f | 1514 | void vlan_to_string(ushort x, char *s) |
a3d991bd WD |
1515 | { |
1516 | x = ntohs(x); | |
1517 | ||
1518 | if (x == (ushort)-1) | |
1519 | x = VLAN_NONE; | |
1520 | ||
1521 | if (x == VLAN_NONE) | |
1522 | strcpy(s, "none"); | |
1523 | else | |
1524 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1525 | } | |
1526 | ||
4fd5055f | 1527 | ushort string_to_vlan(const char *s) |
a3d991bd WD |
1528 | { |
1529 | ushort id; | |
1530 | ||
1531 | if (s == NULL) | |
b9711de1 | 1532 | return htons(VLAN_NONE); |
a3d991bd WD |
1533 | |
1534 | if (*s < '0' || *s > '9') | |
1535 | id = VLAN_NONE; | |
1536 | else | |
1537 | id = (ushort)simple_strtoul(s, NULL, 10); | |
1538 | ||
b9711de1 | 1539 | return htons(id); |
a3d991bd WD |
1540 | } |
1541 | ||
4fd5055f | 1542 | ushort getenv_vlan(char *var) |
a3d991bd | 1543 | { |
4fd5055f | 1544 | return string_to_vlan(getenv(var)); |
a3d991bd | 1545 | } |