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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> |
24b852a7 | 86 | #include <console.h> |
a9f51c9b | 87 | #include <environment.h> |
60304592 | 88 | #include <errno.h> |
2d966958 | 89 | #include <net.h> |
34696958 | 90 | #include <net/tftp.h> |
4545f4e6 | 91 | #if defined(CONFIG_STATUS_LED) |
fc3e2165 | 92 | #include <miiphy.h> |
4545f4e6 | 93 | #include <status_led.h> |
fc3e2165 | 94 | #endif |
4545f4e6 JH |
95 | #include <watchdog.h> |
96 | #include <linux/compiler.h> | |
97 | #include "arp.h" | |
98 | #include "bootp.h" | |
f575ae1f | 99 | #include "cdp.h" |
1a32bf41 RG |
100 | #if defined(CONFIG_CMD_DNS) |
101 | #include "dns.h" | |
102 | #endif | |
d22c338e | 103 | #include "link_local.h" |
4545f4e6 | 104 | #include "nfs.h" |
a36b12f9 | 105 | #include "ping.h" |
4545f4e6 JH |
106 | #include "rarp.h" |
107 | #if defined(CONFIG_CMD_SNTP) | |
108 | #include "sntp.h" | |
109 | #endif | |
2d966958 | 110 | |
d87080b7 WD |
111 | DECLARE_GLOBAL_DATA_PTR; |
112 | ||
2d966958 WD |
113 | /** BOOTP EXTENTIONS **/ |
114 | ||
3e38e429 | 115 | /* Our subnet mask (0=unknown) */ |
049a95a7 | 116 | struct in_addr net_netmask; |
3e38e429 | 117 | /* Our gateways IP address */ |
049a95a7 | 118 | struct in_addr net_gateway; |
3e38e429 | 119 | /* Our DNS IP address */ |
049a95a7 | 120 | struct in_addr net_dns_server; |
1fe80d79 | 121 | #if defined(CONFIG_BOOTP_DNS2) |
3e38e429 | 122 | /* Our 2nd DNS IP address */ |
049a95a7 | 123 | struct in_addr net_dns_server2; |
3e38e429 | 124 | #endif |
2d966958 | 125 | |
53a5c424 | 126 | #ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */ |
049a95a7 | 127 | struct in_addr net_mcast_addr; |
53a5c424 DU |
128 | #endif |
129 | ||
2d966958 WD |
130 | /** END OF BOOTP EXTENTIONS **/ |
131 | ||
3e38e429 | 132 | /* Our ethernet address */ |
0adb5b76 | 133 | u8 net_ethaddr[6]; |
3e38e429 | 134 | /* Boot server enet address */ |
0adb5b76 | 135 | u8 net_server_ethaddr[6]; |
3e38e429 | 136 | /* Our IP addr (0 = unknown) */ |
049a95a7 | 137 | struct in_addr net_ip; |
3e38e429 | 138 | /* Server IP addr (0 = unknown) */ |
049a95a7 | 139 | struct in_addr net_server_ip; |
3e38e429 | 140 | /* Current receive packet */ |
1203fcce | 141 | uchar *net_rx_packet; |
3e38e429 | 142 | /* Current rx packet length */ |
1203fcce | 143 | int net_rx_packet_len; |
3e38e429 | 144 | /* IP packet ID */ |
bc0571fc | 145 | static unsigned net_ip_id; |
3e38e429 | 146 | /* Ethernet bcast address */ |
0adb5b76 JH |
147 | const u8 net_bcast_ethaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
148 | const u8 net_null_ethaddr[6]; | |
f85b6071 | 149 | #ifdef CONFIG_API |
bc0571fc | 150 | void (*push_packet)(void *, int len) = 0; |
f85b6071 | 151 | #endif |
3e38e429 | 152 | /* Network loop state */ |
22f6e99d | 153 | enum net_loop_state net_state; |
3e38e429 | 154 | /* Tried all network devices */ |
bc0571fc | 155 | int net_restart_wrap; |
3e38e429 | 156 | /* Network loop restarted */ |
bc0571fc | 157 | static int net_restarted; |
3e38e429 | 158 | /* At least one device configured */ |
bc0571fc | 159 | static int net_dev_exists; |
2d966958 | 160 | |
6e592385 | 161 | /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */ |
3e38e429 | 162 | /* default is without VLAN */ |
4fd5055f | 163 | ushort net_our_vlan = 0xFFFF; |
3e38e429 | 164 | /* ditto */ |
4fd5055f | 165 | ushort net_native_vlan = 0xFFFF; |
a3d991bd | 166 | |
3e38e429 | 167 | /* Boot File name */ |
11a69ff8 | 168 | char net_boot_file_name[1024]; |
1411157d JH |
169 | /* The actual transferred size of the bootfile (in bytes) */ |
170 | u32 net_boot_file_size; | |
171 | /* Boot file size in blocks as reported by the DHCP server */ | |
172 | u32 net_boot_file_expected_size_in_blocks; | |
2d966958 | 173 | |
643d1ab2 | 174 | #if defined(CONFIG_CMD_SNTP) |
3e38e429 | 175 | /* NTP server IP address */ |
049a95a7 | 176 | struct in_addr net_ntp_server; |
3e38e429 | 177 | /* offset time from UTC */ |
bc0571fc | 178 | int net_ntp_time_offset; |
ea287deb WD |
179 | #endif |
180 | ||
1203fcce | 181 | static uchar net_pkt_buf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
2a504df0 JH |
182 | /* Receive packets */ |
183 | uchar *net_rx_packets[PKTBUFSRX]; | |
ece223b5 JH |
184 | /* Current UDP RX packet handler */ |
185 | static rxhand_f *udp_packet_handler; | |
186 | /* Current ARP RX packet handler */ | |
187 | static rxhand_f *arp_packet_handler; | |
39bccd21 | 188 | #ifdef CONFIG_CMD_TFTPPUT |
ece223b5 JH |
189 | /* Current ICMP rx handler */ |
190 | static rxhand_icmp_f *packet_icmp_handler; | |
39bccd21 | 191 | #endif |
3e38e429 | 192 | /* Current timeout handler */ |
bc0571fc | 193 | static thand_f *time_handler; |
3e38e429 | 194 | /* Time base value */ |
bc0571fc | 195 | static ulong time_start; |
3e38e429 | 196 | /* Current timeout value */ |
bc0571fc | 197 | static ulong time_delta; |
3e38e429 | 198 | /* THE transmit packet */ |
1203fcce | 199 | uchar *net_tx_packet; |
2d966958 | 200 | |
e4bf0c5c | 201 | static int net_check_prereq(enum proto_t protocol); |
2d966958 | 202 | |
bc0571fc | 203 | static int net_try_count; |
67b96e87 | 204 | |
b63056d6 JL |
205 | int __maybe_unused net_busy_flag; |
206 | ||
73a8b27c WD |
207 | /**********************************************************************/ |
208 | ||
a9f51c9b JH |
209 | static int on_bootfile(const char *name, const char *value, enum env_op op, |
210 | int flags) | |
211 | { | |
fd305633 JH |
212 | if (flags & H_PROGRAMMATIC) |
213 | return 0; | |
214 | ||
a9f51c9b JH |
215 | switch (op) { |
216 | case env_op_create: | |
217 | case env_op_overwrite: | |
1411157d JH |
218 | copy_filename(net_boot_file_name, value, |
219 | sizeof(net_boot_file_name)); | |
a9f51c9b JH |
220 | break; |
221 | default: | |
222 | break; | |
223 | } | |
224 | ||
225 | return 0; | |
226 | } | |
227 | U_BOOT_ENV_CALLBACK(bootfile, on_bootfile); | |
228 | ||
fd305633 JH |
229 | static int on_ipaddr(const char *name, const char *value, enum env_op op, |
230 | int flags) | |
231 | { | |
232 | if (flags & H_PROGRAMMATIC) | |
233 | return 0; | |
234 | ||
235 | net_ip = string_to_ip(value); | |
236 | ||
237 | return 0; | |
238 | } | |
239 | U_BOOT_ENV_CALLBACK(ipaddr, on_ipaddr); | |
240 | ||
241 | static int on_gatewayip(const char *name, const char *value, enum env_op op, | |
242 | int flags) | |
243 | { | |
244 | if (flags & H_PROGRAMMATIC) | |
245 | return 0; | |
246 | ||
247 | net_gateway = string_to_ip(value); | |
248 | ||
249 | return 0; | |
250 | } | |
251 | U_BOOT_ENV_CALLBACK(gatewayip, on_gatewayip); | |
252 | ||
253 | static int on_netmask(const char *name, const char *value, enum env_op op, | |
254 | int flags) | |
255 | { | |
256 | if (flags & H_PROGRAMMATIC) | |
257 | return 0; | |
258 | ||
259 | net_netmask = string_to_ip(value); | |
260 | ||
261 | return 0; | |
262 | } | |
263 | U_BOOT_ENV_CALLBACK(netmask, on_netmask); | |
264 | ||
265 | static int on_serverip(const char *name, const char *value, enum env_op op, | |
266 | int flags) | |
267 | { | |
268 | if (flags & H_PROGRAMMATIC) | |
269 | return 0; | |
270 | ||
271 | net_server_ip = string_to_ip(value); | |
272 | ||
273 | return 0; | |
274 | } | |
275 | U_BOOT_ENV_CALLBACK(serverip, on_serverip); | |
276 | ||
277 | static int on_nvlan(const char *name, const char *value, enum env_op op, | |
278 | int flags) | |
279 | { | |
280 | if (flags & H_PROGRAMMATIC) | |
281 | return 0; | |
282 | ||
283 | net_native_vlan = string_to_vlan(value); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | U_BOOT_ENV_CALLBACK(nvlan, on_nvlan); | |
288 | ||
289 | static int on_vlan(const char *name, const char *value, enum env_op op, | |
290 | int flags) | |
291 | { | |
292 | if (flags & H_PROGRAMMATIC) | |
293 | return 0; | |
294 | ||
295 | net_our_vlan = string_to_vlan(value); | |
296 | ||
297 | return 0; | |
298 | } | |
299 | U_BOOT_ENV_CALLBACK(vlan, on_vlan); | |
300 | ||
301 | #if defined(CONFIG_CMD_DNS) | |
302 | static int on_dnsip(const char *name, const char *value, enum env_op op, | |
303 | int flags) | |
304 | { | |
305 | if (flags & H_PROGRAMMATIC) | |
306 | return 0; | |
307 | ||
308 | net_dns_server = string_to_ip(value); | |
309 | ||
310 | return 0; | |
311 | } | |
312 | U_BOOT_ENV_CALLBACK(dnsip, on_dnsip); | |
313 | #endif | |
314 | ||
e4a3d57d SG |
315 | /* |
316 | * Check if autoload is enabled. If so, use either NFS or TFTP to download | |
317 | * the boot file. | |
318 | */ | |
319 | void net_auto_load(void) | |
320 | { | |
ec8a252c | 321 | #if defined(CONFIG_CMD_NFS) |
e4a3d57d SG |
322 | const char *s = getenv("autoload"); |
323 | ||
ec8a252c JH |
324 | if (s != NULL && strcmp(s, "NFS") == 0) { |
325 | /* | |
326 | * Use NFS to load the bootfile. | |
327 | */ | |
68c76a3a | 328 | nfs_start(); |
ec8a252c JH |
329 | return; |
330 | } | |
e4a3d57d | 331 | #endif |
ec8a252c JH |
332 | if (getenv_yesno("autoload") == 0) { |
333 | /* | |
334 | * Just use BOOTP/RARP to configure system; | |
335 | * Do not use TFTP to load the bootfile. | |
336 | */ | |
337 | net_set_state(NETLOOP_SUCCESS); | |
338 | return; | |
e4a3d57d | 339 | } |
8885c5fe | 340 | tftp_start(TFTPGET); |
e4a3d57d SG |
341 | } |
342 | ||
bc0571fc | 343 | static void net_init_loop(void) |
2f70c49e | 344 | { |
7315cfd9 | 345 | if (eth_get_dev()) |
0adb5b76 | 346 | memcpy(net_ethaddr, eth_get_ethaddr(), 6); |
3c172c4f | 347 | |
da95427c | 348 | return; |
2f70c49e HS |
349 | } |
350 | ||
ece223b5 JH |
351 | static void net_clear_handlers(void) |
352 | { | |
353 | net_set_udp_handler(NULL); | |
354 | net_set_arp_handler(NULL); | |
bc0571fc | 355 | net_set_timeout_handler(0, NULL); |
ece223b5 JH |
356 | } |
357 | ||
358 | static void net_cleanup_loop(void) | |
359 | { | |
360 | net_clear_handlers(); | |
361 | } | |
362 | ||
46c495d5 JH |
363 | void net_init(void) |
364 | { | |
365 | static int first_call = 1; | |
366 | ||
367 | if (first_call) { | |
368 | /* | |
369 | * Setup packet buffers, aligned correctly. | |
370 | */ | |
371 | int i; | |
372 | ||
1203fcce JH |
373 | net_tx_packet = &net_pkt_buf[0] + (PKTALIGN - 1); |
374 | net_tx_packet -= (ulong)net_tx_packet % PKTALIGN; | |
2a504df0 | 375 | for (i = 0; i < PKTBUFSRX; i++) { |
1203fcce JH |
376 | net_rx_packets[i] = net_tx_packet + |
377 | (i + 1) * PKTSIZE_ALIGN; | |
2a504df0 | 378 | } |
85d25e0e | 379 | arp_init(); |
46c495d5 JH |
380 | net_clear_handlers(); |
381 | ||
382 | /* Only need to setup buffer pointers once. */ | |
383 | first_call = 0; | |
384 | } | |
385 | ||
bc0571fc | 386 | net_init_loop(); |
46c495d5 JH |
387 | } |
388 | ||
2d966958 WD |
389 | /**********************************************************************/ |
390 | /* | |
391 | * Main network processing loop. | |
392 | */ | |
393 | ||
bc0571fc | 394 | int net_loop(enum proto_t protocol) |
2d966958 | 395 | { |
60304592 | 396 | int ret = -EINVAL; |
2d966958 | 397 | |
bc0571fc JH |
398 | net_restarted = 0; |
399 | net_dev_exists = 0; | |
400 | net_try_count = 1; | |
401 | debug_cond(DEBUG_INT_STATE, "--- net_loop Entry\n"); | |
73a8b27c | 402 | |
573f14fe | 403 | bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start"); |
46c495d5 | 404 | net_init(); |
f8be7d65 | 405 | if (eth_is_on_demand_init() || protocol != NETCONS) { |
b1bf6f2c | 406 | eth_halt(); |
f8be7d65 | 407 | eth_set_current(); |
60304592 JH |
408 | ret = eth_init(); |
409 | if (ret < 0) { | |
f8be7d65 | 410 | eth_halt(); |
60304592 | 411 | return ret; |
f8be7d65 | 412 | } |
bc0571fc | 413 | } else { |
d2eaec60 | 414 | eth_init_state_only(); |
bc0571fc | 415 | } |
2d966958 | 416 | restart: |
b63056d6 JL |
417 | #ifdef CONFIG_USB_KEYBOARD |
418 | net_busy_flag = 0; | |
419 | #endif | |
22f6e99d | 420 | net_set_state(NETLOOP_CONTINUE); |
2d966958 WD |
421 | |
422 | /* | |
423 | * Start the ball rolling with the given start function. From | |
424 | * here on, this code is a state machine driven by received | |
425 | * packets and timer events. | |
426 | */ | |
bc0571fc JH |
427 | debug_cond(DEBUG_INT_STATE, "--- net_loop Init\n"); |
428 | net_init_loop(); | |
2d966958 | 429 | |
4f63acd0 | 430 | switch (net_check_prereq(protocol)) { |
2d966958 WD |
431 | case 1: |
432 | /* network not configured */ | |
b1bf6f2c | 433 | eth_halt(); |
60304592 | 434 | return -ENODEV; |
2d966958 | 435 | |
2d966958 WD |
436 | case 2: |
437 | /* network device not configured */ | |
438 | break; | |
2d966958 WD |
439 | |
440 | case 0: | |
bc0571fc | 441 | net_dev_exists = 1; |
1411157d | 442 | net_boot_file_size = 0; |
2d966958 | 443 | switch (protocol) { |
e4bf0c5c | 444 | case TFTPGET: |
1fb7cd49 SG |
445 | #ifdef CONFIG_CMD_TFTPPUT |
446 | case TFTPPUT: | |
447 | #endif | |
2d966958 | 448 | /* always use ARP to get server ethernet address */ |
8885c5fe | 449 | tftp_start(protocol); |
2d966958 | 450 | break; |
7a83af07 LC |
451 | #ifdef CONFIG_CMD_TFTPSRV |
452 | case TFTPSRV: | |
8885c5fe | 453 | tftp_start_server(); |
7a83af07 LC |
454 | break; |
455 | #endif | |
643d1ab2 | 456 | #if defined(CONFIG_CMD_DHCP) |
2d966958 | 457 | case DHCP: |
7044c6bb | 458 | bootp_reset(); |
049a95a7 | 459 | net_ip.s_addr = 0; |
7044c6bb | 460 | dhcp_request(); /* Basically same as BOOTP */ |
2d966958 | 461 | break; |
610f2e9c | 462 | #endif |
2d966958 WD |
463 | |
464 | case BOOTP: | |
7044c6bb | 465 | bootp_reset(); |
049a95a7 | 466 | net_ip.s_addr = 0; |
7044c6bb | 467 | bootp_request(); |
2d966958 WD |
468 | break; |
469 | ||
bf6cb247 | 470 | #if defined(CONFIG_CMD_RARP) |
2d966958 | 471 | case RARP: |
698d78e5 | 472 | rarp_try = 0; |
049a95a7 | 473 | net_ip.s_addr = 0; |
698d78e5 | 474 | rarp_request(); |
2d966958 | 475 | break; |
bf6cb247 | 476 | #endif |
643d1ab2 | 477 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 478 | case PING: |
a36b12f9 | 479 | ping_start(); |
73a8b27c | 480 | break; |
cbd8a35c | 481 | #endif |
643d1ab2 | 482 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 483 | case NFS: |
68c76a3a | 484 | nfs_start(); |
cbd8a35c | 485 | break; |
a3d991bd | 486 | #endif |
643d1ab2 | 487 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 488 | case CDP: |
6aede5b7 | 489 | cdp_start(); |
a3d991bd | 490 | break; |
68ceb29e | 491 | #endif |
bc0571fc | 492 | #if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD) |
68ceb29e | 493 | case NETCONS: |
6a38a5f3 | 494 | nc_start(); |
68ceb29e | 495 | break; |
ea287deb | 496 | #endif |
643d1ab2 | 497 | #if defined(CONFIG_CMD_SNTP) |
ea287deb | 498 | case SNTP: |
38ba2558 | 499 | sntp_start(); |
ea287deb | 500 | break; |
1a32bf41 RG |
501 | #endif |
502 | #if defined(CONFIG_CMD_DNS) | |
503 | case DNS: | |
786eac5f | 504 | dns_start(); |
1a32bf41 | 505 | break; |
d22c338e JH |
506 | #endif |
507 | #if defined(CONFIG_CMD_LINK_LOCAL) | |
508 | case LINKLOCAL: | |
509 | link_local_start(); | |
510 | break; | |
73a8b27c | 511 | #endif |
2d966958 WD |
512 | default: |
513 | break; | |
514 | } | |
515 | ||
2d966958 WD |
516 | break; |
517 | } | |
518 | ||
643d1ab2 | 519 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
3e38e429 LC |
520 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
521 | defined(CONFIG_STATUS_LED) && \ | |
522 | defined(STATUS_LED_RED) | |
fc3e2165 | 523 | /* |
42d1f039 | 524 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 525 | */ |
d3c65b01 | 526 | if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) |
4f63acd0 | 527 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
d3c65b01 | 528 | else |
4f63acd0 | 529 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
6d0f6bcf | 530 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 531 | #endif /* CONFIG_MII, ... */ |
b63056d6 JL |
532 | #ifdef CONFIG_USB_KEYBOARD |
533 | net_busy_flag = 1; | |
534 | #endif | |
2d966958 WD |
535 | |
536 | /* | |
537 | * Main packet reception loop. Loop receiving packets until | |
22f6e99d | 538 | * someone sets `net_state' to a state that terminates. |
2d966958 WD |
539 | */ |
540 | for (;;) { | |
541 | WATCHDOG_RESET(); | |
542 | #ifdef CONFIG_SHOW_ACTIVITY | |
48522bb5 | 543 | show_activity(1); |
2d966958 | 544 | #endif |
c5a75339 JH |
545 | if (arp_timeout_check() > 0) |
546 | time_start = get_timer(0); | |
547 | ||
2d966958 WD |
548 | /* |
549 | * Check the ethernet for a new packet. The ethernet | |
550 | * receive routine will process it. | |
60304592 JH |
551 | * Most drivers return the most recent packet size, but not |
552 | * errors that may have happened. | |
2d966958 | 553 | */ |
40cb90ee | 554 | eth_rx(); |
2d966958 WD |
555 | |
556 | /* | |
557 | * Abort if ctrl-c was pressed. | |
558 | */ | |
559 | if (ctrlc()) { | |
e94070c4 | 560 | /* cancel any ARP that may not have completed */ |
049a95a7 | 561 | net_arp_wait_packet_ip.s_addr = 0; |
e94070c4 | 562 | |
ece223b5 | 563 | net_cleanup_loop(); |
8bde7f77 | 564 | eth_halt(); |
f8be7d65 JH |
565 | /* Invalidate the last protocol */ |
566 | eth_set_last_protocol(BOOTP); | |
567 | ||
4f63acd0 | 568 | puts("\nAbort\n"); |
4ef8d53c JH |
569 | /* include a debug print as well incase the debug |
570 | messages are directed to stderr */ | |
bc0571fc | 571 | debug_cond(DEBUG_INT_STATE, "--- net_loop Abort!\n"); |
19a4fbaa | 572 | ret = -EINTR; |
4793ee65 | 573 | goto done; |
2d966958 WD |
574 | } |
575 | ||
2d966958 WD |
576 | /* |
577 | * Check for a timeout, and run the timeout handler | |
578 | * if we have one. | |
579 | */ | |
bc0571fc JH |
580 | if (time_handler && |
581 | ((get_timer(0) - time_start) > time_delta)) { | |
2d966958 WD |
582 | thand_f *x; |
583 | ||
643d1ab2 | 584 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
4f63acd0 LC |
585 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
586 | defined(CONFIG_STATUS_LED) && \ | |
587 | defined(STATUS_LED_RED) | |
fc3e2165 | 588 | /* |
42d1f039 | 589 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 590 | */ |
4f63acd0 | 591 | if (miiphy_link(eth_get_dev()->name, |
bc0571fc | 592 | CONFIG_SYS_FAULT_MII_ADDR)) |
4f63acd0 | 593 | status_led_set(STATUS_LED_RED, STATUS_LED_OFF); |
bc0571fc | 594 | else |
4f63acd0 | 595 | status_led_set(STATUS_LED_RED, STATUS_LED_ON); |
4f63acd0 | 596 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 597 | #endif /* CONFIG_MII, ... */ |
bc0571fc JH |
598 | debug_cond(DEBUG_INT_STATE, "--- net_loop timeout\n"); |
599 | x = time_handler; | |
600 | time_handler = (thand_f *)0; | |
2d966958 WD |
601 | (*x)(); |
602 | } | |
603 | ||
5c421331 | 604 | if (net_state == NETLOOP_FAIL) |
bc0571fc | 605 | ret = net_start_again(); |
2d966958 | 606 | |
22f6e99d | 607 | switch (net_state) { |
2d966958 | 608 | case NETLOOP_RESTART: |
bc0571fc | 609 | net_restarted = 1; |
2d966958 WD |
610 | goto restart; |
611 | ||
612 | case NETLOOP_SUCCESS: | |
ece223b5 | 613 | net_cleanup_loop(); |
1411157d JH |
614 | if (net_boot_file_size > 0) { |
615 | printf("Bytes transferred = %d (%x hex)\n", | |
616 | net_boot_file_size, net_boot_file_size); | |
617 | setenv_hex("filesize", net_boot_file_size); | |
978226da | 618 | setenv_hex("fileaddr", load_addr); |
2d966958 | 619 | } |
f8be7d65 JH |
620 | if (protocol != NETCONS) |
621 | eth_halt(); | |
622 | else | |
623 | eth_halt_state_only(); | |
624 | ||
625 | eth_set_last_protocol(protocol); | |
626 | ||
1411157d | 627 | ret = net_boot_file_size; |
bc0571fc | 628 | debug_cond(DEBUG_INT_STATE, "--- net_loop Success!\n"); |
4793ee65 | 629 | goto done; |
2d966958 WD |
630 | |
631 | case NETLOOP_FAIL: | |
ece223b5 | 632 | net_cleanup_loop(); |
f8be7d65 JH |
633 | /* Invalidate the last protocol */ |
634 | eth_set_last_protocol(BOOTP); | |
bc0571fc | 635 | debug_cond(DEBUG_INT_STATE, "--- net_loop Fail!\n"); |
4793ee65 | 636 | goto done; |
22f6e99d JH |
637 | |
638 | case NETLOOP_CONTINUE: | |
639 | continue; | |
2d966958 WD |
640 | } |
641 | } | |
4793ee65 SG |
642 | |
643 | done: | |
b63056d6 JL |
644 | #ifdef CONFIG_USB_KEYBOARD |
645 | net_busy_flag = 0; | |
646 | #endif | |
39bccd21 | 647 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 | 648 | /* Clear out the handlers */ |
ece223b5 | 649 | net_set_udp_handler(NULL); |
4793ee65 | 650 | net_set_icmp_handler(NULL); |
39bccd21 | 651 | #endif |
4793ee65 | 652 | return ret; |
2d966958 WD |
653 | } |
654 | ||
655 | /**********************************************************************/ | |
656 | ||
bc0571fc | 657 | static void start_again_timeout_handler(void) |
2d966958 | 658 | { |
22f6e99d | 659 | net_set_state(NETLOOP_RESTART); |
2d966958 WD |
660 | } |
661 | ||
bc0571fc | 662 | int net_start_again(void) |
2d966958 | 663 | { |
6e592385 | 664 | char *nretry; |
67b96e87 RB |
665 | int retry_forever = 0; |
666 | unsigned long retrycnt = 0; | |
60304592 | 667 | int ret; |
67b96e87 RB |
668 | |
669 | nretry = getenv("netretry"); | |
670 | if (nretry) { | |
671 | if (!strcmp(nretry, "yes")) | |
672 | retry_forever = 1; | |
673 | else if (!strcmp(nretry, "no")) | |
674 | retrycnt = 0; | |
675 | else if (!strcmp(nretry, "once")) | |
676 | retrycnt = 1; | |
677 | else | |
678 | retrycnt = simple_strtoul(nretry, NULL, 0); | |
5c421331 JH |
679 | } else { |
680 | retrycnt = 0; | |
681 | retry_forever = 0; | |
682 | } | |
67b96e87 | 683 | |
bc0571fc | 684 | if ((!retry_forever) && (net_try_count >= retrycnt)) { |
67b96e87 | 685 | eth_halt(); |
22f6e99d | 686 | net_set_state(NETLOOP_FAIL); |
60304592 JH |
687 | /* |
688 | * We don't provide a way for the protocol to return an error, | |
689 | * but this is almost always the reason. | |
690 | */ | |
691 | return -ETIMEDOUT; | |
a3d991bd | 692 | } |
67b96e87 | 693 | |
bc0571fc | 694 | net_try_count++; |
67b96e87 | 695 | |
4f63acd0 | 696 | eth_halt(); |
8b0c5c12 | 697 | #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER) |
bc0571fc | 698 | eth_try_another(!net_restarted); |
8b0c5c12 | 699 | #endif |
60304592 | 700 | ret = eth_init(); |
bc0571fc JH |
701 | if (net_restart_wrap) { |
702 | net_restart_wrap = 0; | |
703 | if (net_dev_exists) { | |
704 | net_set_timeout_handler(10000UL, | |
705 | start_again_timeout_handler); | |
ece223b5 | 706 | net_set_udp_handler(NULL); |
6e592385 | 707 | } else { |
22f6e99d | 708 | net_set_state(NETLOOP_FAIL); |
2d966958 | 709 | } |
6e592385 | 710 | } else { |
22f6e99d | 711 | net_set_state(NETLOOP_RESTART); |
2d966958 | 712 | } |
60304592 | 713 | return ret; |
2d966958 WD |
714 | } |
715 | ||
716 | /**********************************************************************/ | |
717 | /* | |
718 | * Miscelaneous bits. | |
719 | */ | |
720 | ||
ece223b5 | 721 | static void dummy_handler(uchar *pkt, unsigned dport, |
049a95a7 | 722 | struct in_addr sip, unsigned sport, |
ece223b5 | 723 | unsigned len) |
d280d3f4 | 724 | { |
d280d3f4 JH |
725 | } |
726 | ||
ece223b5 JH |
727 | rxhand_f *net_get_udp_handler(void) |
728 | { | |
729 | return udp_packet_handler; | |
730 | } | |
d280d3f4 | 731 | |
ece223b5 JH |
732 | void net_set_udp_handler(rxhand_f *f) |
733 | { | |
bc0571fc | 734 | debug_cond(DEBUG_INT_STATE, "--- net_loop UDP handler set (%p)\n", f); |
ece223b5 JH |
735 | if (f == NULL) |
736 | udp_packet_handler = dummy_handler; | |
737 | else | |
738 | udp_packet_handler = f; | |
739 | } | |
740 | ||
741 | rxhand_f *net_get_arp_handler(void) | |
2d966958 | 742 | { |
ece223b5 JH |
743 | return arp_packet_handler; |
744 | } | |
745 | ||
746 | void net_set_arp_handler(rxhand_f *f) | |
747 | { | |
bc0571fc | 748 | debug_cond(DEBUG_INT_STATE, "--- net_loop ARP handler set (%p)\n", f); |
ece223b5 JH |
749 | if (f == NULL) |
750 | arp_packet_handler = dummy_handler; | |
751 | else | |
752 | arp_packet_handler = f; | |
2d966958 WD |
753 | } |
754 | ||
39bccd21 | 755 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
756 | void net_set_icmp_handler(rxhand_icmp_f *f) |
757 | { | |
758 | packet_icmp_handler = f; | |
759 | } | |
39bccd21 | 760 | #endif |
2d966958 | 761 | |
bc0571fc | 762 | void net_set_timeout_handler(ulong iv, thand_f *f) |
2d966958 WD |
763 | { |
764 | if (iv == 0) { | |
4ef8d53c | 765 | debug_cond(DEBUG_INT_STATE, |
bc0571fc JH |
766 | "--- net_loop timeout handler cancelled\n"); |
767 | time_handler = (thand_f *)0; | |
2d966958 | 768 | } else { |
4ef8d53c | 769 | debug_cond(DEBUG_INT_STATE, |
bc0571fc JH |
770 | "--- net_loop timeout handler set (%p)\n", f); |
771 | time_handler = f; | |
772 | time_start = get_timer(0); | |
773 | time_delta = iv * CONFIG_SYS_HZ / 1000; | |
2d966958 WD |
774 | } |
775 | } | |
776 | ||
1203fcce | 777 | int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport, |
206d07fd | 778 | int payload_len) |
73a8b27c | 779 | { |
a3d991bd | 780 | uchar *pkt; |
9214637a JH |
781 | int eth_hdr_size; |
782 | int pkt_hdr_size; | |
a3d991bd | 783 | |
bc0571fc | 784 | /* make sure the net_tx_packet is initialized (net_init() was called) */ |
1203fcce JH |
785 | assert(net_tx_packet != NULL); |
786 | if (net_tx_packet == NULL) | |
46c495d5 JH |
787 | return -1; |
788 | ||
73a8b27c | 789 | /* convert to new style broadcast */ |
049a95a7 JH |
790 | if (dest.s_addr == 0) |
791 | dest.s_addr = 0xFFFFFFFF; | |
73a8b27c WD |
792 | |
793 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
049a95a7 | 794 | if (dest.s_addr == 0xFFFFFFFF) |
0adb5b76 | 795 | ether = (uchar *)net_bcast_ethaddr; |
73a8b27c | 796 | |
1203fcce | 797 | pkt = (uchar *)net_tx_packet; |
9214637a | 798 | |
1203fcce | 799 | eth_hdr_size = net_set_ether(pkt, ether, PROT_IP); |
9214637a JH |
800 | pkt += eth_hdr_size; |
801 | net_set_udp_header(pkt, dest, dport, sport, payload_len); | |
802 | pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE; | |
73a8b27c | 803 | |
e94070c4 | 804 | /* if MAC address was not discovered yet, do an ARP request */ |
0adb5b76 | 805 | if (memcmp(ether, net_null_ethaddr, 6) == 0) { |
4ef8d53c | 806 | debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest); |
0ebf04c6 | 807 | |
9214637a | 808 | /* save the ip and eth addr for the packet to send after arp */ |
049a95a7 | 809 | net_arp_wait_packet_ip = dest; |
85d25e0e | 810 | arp_wait_packet_ethaddr = ether; |
a3d991bd | 811 | |
73a8b27c | 812 | /* size of the waiting packet */ |
85d25e0e | 813 | arp_wait_tx_packet_size = pkt_hdr_size + payload_len; |
73a8b27c WD |
814 | |
815 | /* and do the ARP request */ | |
85d25e0e JH |
816 | arp_wait_try = 1; |
817 | arp_wait_timer_start = get_timer(0); | |
818 | arp_request(); | |
73a8b27c | 819 | return 1; /* waiting */ |
9214637a | 820 | } else { |
4ef8d53c | 821 | debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n", |
bc0571fc | 822 | &dest, ether); |
1203fcce | 823 | net_send_packet(net_tx_packet, pkt_hdr_size + payload_len); |
9214637a | 824 | return 0; /* transmitted */ |
73a8b27c | 825 | } |
73a8b27c WD |
826 | } |
827 | ||
5cfaa4e5 AR |
828 | #ifdef CONFIG_IP_DEFRAG |
829 | /* | |
830 | * This function collects fragments in a single packet, according | |
831 | * to the algorithm in RFC815. It returns NULL or the pointer to | |
832 | * a complete packet, in static storage | |
833 | */ | |
834 | #ifndef CONFIG_NET_MAXDEFRAG | |
835 | #define CONFIG_NET_MAXDEFRAG 16384 | |
836 | #endif | |
837 | /* | |
838 | * MAXDEFRAG, above, is chosen in the config file and is real data | |
839 | * so we need to add the NFS overhead, which is more than TFTP. | |
840 | * To use sizeof in the internal unnamed structures, we need a real | |
841 | * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately). | |
842 | * The compiler doesn't complain nor allocates the actual structure | |
843 | */ | |
844 | static struct rpc_t rpc_specimen; | |
845 | #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply)) | |
846 | ||
c5c59df0 | 847 | #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE) |
5cfaa4e5 AR |
848 | |
849 | /* | |
850 | * this is the packet being assembled, either data or frag control. | |
851 | * Fragments go by 8 bytes, so this union must be 8 bytes long | |
852 | */ | |
853 | struct hole { | |
854 | /* first_byte is address of this structure */ | |
855 | u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */ | |
856 | u16 next_hole; /* index of next (in 8-b blocks), 0 == none */ | |
857 | u16 prev_hole; /* index of prev, 0 == none */ | |
858 | u16 unused; | |
859 | }; | |
860 | ||
bc0571fc | 861 | static struct ip_udp_hdr *__net_defragment(struct ip_udp_hdr *ip, int *lenp) |
5cfaa4e5 | 862 | { |
48522bb5 | 863 | static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN); |
5cfaa4e5 AR |
864 | static u16 first_hole, total_len; |
865 | struct hole *payload, *thisfrag, *h, *newh; | |
594c26f8 | 866 | struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff; |
5cfaa4e5 AR |
867 | uchar *indata = (uchar *)ip; |
868 | int offset8, start, len, done = 0; | |
869 | u16 ip_off = ntohs(ip->ip_off); | |
870 | ||
871 | /* payload starts after IP header, this fragment is in there */ | |
c5c59df0 | 872 | payload = (struct hole *)(pkt_buff + IP_HDR_SIZE); |
5cfaa4e5 AR |
873 | offset8 = (ip_off & IP_OFFS); |
874 | thisfrag = payload + offset8; | |
875 | start = offset8 * 8; | |
c5c59df0 | 876 | len = ntohs(ip->ip_len) - IP_HDR_SIZE; |
5cfaa4e5 AR |
877 | |
878 | if (start + len > IP_MAXUDP) /* fragment extends too far */ | |
879 | return NULL; | |
880 | ||
881 | if (!total_len || localip->ip_id != ip->ip_id) { | |
882 | /* new (or different) packet, reset structs */ | |
883 | total_len = 0xffff; | |
884 | payload[0].last_byte = ~0; | |
885 | payload[0].next_hole = 0; | |
886 | payload[0].prev_hole = 0; | |
887 | first_hole = 0; | |
888 | /* any IP header will work, copy the first we received */ | |
c5c59df0 | 889 | memcpy(localip, ip, IP_HDR_SIZE); |
5cfaa4e5 AR |
890 | } |
891 | ||
892 | /* | |
893 | * What follows is the reassembly algorithm. We use the payload | |
894 | * array as a linked list of hole descriptors, as each hole starts | |
895 | * at a multiple of 8 bytes. However, last byte can be whatever value, | |
896 | * so it is represented as byte count, not as 8-byte blocks. | |
897 | */ | |
898 | ||
899 | h = payload + first_hole; | |
900 | while (h->last_byte < start) { | |
901 | if (!h->next_hole) { | |
902 | /* no hole that far away */ | |
903 | return NULL; | |
904 | } | |
905 | h = payload + h->next_hole; | |
906 | } | |
907 | ||
e397e59e FS |
908 | /* last fragment may be 1..7 bytes, the "+7" forces acceptance */ |
909 | if (offset8 + ((len + 7) / 8) <= h - payload) { | |
5cfaa4e5 AR |
910 | /* no overlap with holes (dup fragment?) */ |
911 | return NULL; | |
912 | } | |
913 | ||
914 | if (!(ip_off & IP_FLAGS_MFRAG)) { | |
915 | /* no more fragmentss: truncate this (last) hole */ | |
916 | total_len = start + len; | |
917 | h->last_byte = start + len; | |
918 | } | |
919 | ||
920 | /* | |
921 | * There is some overlap: fix the hole list. This code doesn't | |
922 | * deal with a fragment that overlaps with two different holes | |
923 | * (thus being a superset of a previously-received fragment). | |
924 | */ | |
925 | ||
4f63acd0 | 926 | if ((h >= thisfrag) && (h->last_byte <= start + len)) { |
5cfaa4e5 AR |
927 | /* complete overlap with hole: remove hole */ |
928 | if (!h->prev_hole && !h->next_hole) { | |
929 | /* last remaining hole */ | |
930 | done = 1; | |
931 | } else if (!h->prev_hole) { | |
932 | /* first hole */ | |
933 | first_hole = h->next_hole; | |
934 | payload[h->next_hole].prev_hole = 0; | |
935 | } else if (!h->next_hole) { | |
936 | /* last hole */ | |
937 | payload[h->prev_hole].next_hole = 0; | |
938 | } else { | |
939 | /* in the middle of the list */ | |
940 | payload[h->next_hole].prev_hole = h->prev_hole; | |
941 | payload[h->prev_hole].next_hole = h->next_hole; | |
942 | } | |
943 | ||
944 | } else if (h->last_byte <= start + len) { | |
945 | /* overlaps with final part of the hole: shorten this hole */ | |
946 | h->last_byte = start; | |
947 | ||
948 | } else if (h >= thisfrag) { | |
949 | /* overlaps with initial part of the hole: move this hole */ | |
950 | newh = thisfrag + (len / 8); | |
951 | *newh = *h; | |
952 | h = newh; | |
953 | if (h->next_hole) | |
954 | payload[h->next_hole].prev_hole = (h - payload); | |
955 | if (h->prev_hole) | |
956 | payload[h->prev_hole].next_hole = (h - payload); | |
957 | else | |
958 | first_hole = (h - payload); | |
959 | ||
960 | } else { | |
961 | /* fragment sits in the middle: split the hole */ | |
962 | newh = thisfrag + (len / 8); | |
963 | *newh = *h; | |
964 | h->last_byte = start; | |
965 | h->next_hole = (newh - payload); | |
966 | newh->prev_hole = (h - payload); | |
967 | if (newh->next_hole) | |
968 | payload[newh->next_hole].prev_hole = (newh - payload); | |
969 | } | |
970 | ||
971 | /* finally copy this fragment and possibly return whole packet */ | |
c5c59df0 | 972 | memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len); |
5cfaa4e5 AR |
973 | if (!done) |
974 | return NULL; | |
975 | ||
976 | localip->ip_len = htons(total_len); | |
c5c59df0 | 977 | *lenp = total_len + IP_HDR_SIZE; |
5cfaa4e5 AR |
978 | return localip; |
979 | } | |
980 | ||
bc0571fc JH |
981 | static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip, |
982 | int *lenp) | |
5cfaa4e5 AR |
983 | { |
984 | u16 ip_off = ntohs(ip->ip_off); | |
985 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
986 | return ip; /* not a fragment */ | |
bc0571fc | 987 | return __net_defragment(ip, lenp); |
5cfaa4e5 AR |
988 | } |
989 | ||
990 | #else /* !CONFIG_IP_DEFRAG */ | |
991 | ||
bc0571fc JH |
992 | static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip, |
993 | int *lenp) | |
5cfaa4e5 AR |
994 | { |
995 | u16 ip_off = ntohs(ip->ip_off); | |
996 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
997 | return ip; /* not a fragment */ | |
998 | return NULL; | |
999 | } | |
1000 | #endif | |
a3d991bd | 1001 | |
8f79bb17 SG |
1002 | /** |
1003 | * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently | |
1004 | * drop others. | |
1005 | * | |
1006 | * @parma ip IP packet containing the ICMP | |
1007 | */ | |
594c26f8 | 1008 | static void receive_icmp(struct ip_udp_hdr *ip, int len, |
049a95a7 | 1009 | struct in_addr src_ip, struct ethernet_hdr *et) |
8f79bb17 | 1010 | { |
e0a63079 | 1011 | struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src; |
8f79bb17 SG |
1012 | |
1013 | switch (icmph->type) { | |
1014 | case ICMP_REDIRECT: | |
1015 | if (icmph->code != ICMP_REDIR_HOST) | |
1016 | return; | |
1017 | printf(" ICMP Host Redirect to %pI4 ", | |
bc0571fc | 1018 | &icmph->un.gateway); |
8f79bb17 | 1019 | break; |
a36b12f9 | 1020 | default: |
8f79bb17 | 1021 | #if defined(CONFIG_CMD_PING) |
a36b12f9 | 1022 | ping_receive(et, ip, len); |
8f79bb17 | 1023 | #endif |
39bccd21 | 1024 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
1025 | if (packet_icmp_handler) |
1026 | packet_icmp_handler(icmph->type, icmph->code, | |
bc0571fc JH |
1027 | ntohs(ip->udp_dst), src_ip, |
1028 | ntohs(ip->udp_src), icmph->un.data, | |
1029 | ntohs(ip->udp_len)); | |
39bccd21 | 1030 | #endif |
8f79bb17 SG |
1031 | break; |
1032 | } | |
1033 | } | |
1034 | ||
2a504df0 | 1035 | void net_process_received_packet(uchar *in_packet, int len) |
2d966958 | 1036 | { |
cb487f56 | 1037 | struct ethernet_hdr *et; |
594c26f8 | 1038 | struct ip_udp_hdr *ip; |
049a95a7 JH |
1039 | struct in_addr dst_ip; |
1040 | struct in_addr src_ip; | |
8d353eb8 | 1041 | int eth_proto; |
643d1ab2 | 1042 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1043 | int iscdp; |
1044 | #endif | |
1045 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
1046 | ||
4ef8d53c | 1047 | debug_cond(DEBUG_NET_PKT, "packet received\n"); |
2d966958 | 1048 | |
1203fcce JH |
1049 | net_rx_packet = in_packet; |
1050 | net_rx_packet_len = len; | |
2a504df0 | 1051 | et = (struct ethernet_hdr *)in_packet; |
a3d991bd WD |
1052 | |
1053 | /* too small packet? */ | |
1054 | if (len < ETHER_HDR_SIZE) | |
1055 | return; | |
1056 | ||
f85b6071 RJ |
1057 | #ifdef CONFIG_API |
1058 | if (push_packet) { | |
2a504df0 | 1059 | (*push_packet)(in_packet, len); |
f85b6071 RJ |
1060 | return; |
1061 | } | |
1062 | #endif | |
1063 | ||
643d1ab2 | 1064 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 1065 | /* keep track if packet is CDP */ |
17351883 | 1066 | iscdp = is_cdp_packet(et->et_dest); |
a3d991bd WD |
1067 | #endif |
1068 | ||
4fd5055f | 1069 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1070 | if (myvlanid == (ushort)-1) |
1071 | myvlanid = VLAN_NONE; | |
4fd5055f | 1072 | mynvlanid = ntohs(net_native_vlan); |
a3d991bd WD |
1073 | if (mynvlanid == (ushort)-1) |
1074 | mynvlanid = VLAN_NONE; | |
2d966958 | 1075 | |
8d353eb8 | 1076 | eth_proto = ntohs(et->et_protlen); |
2d966958 | 1077 | |
8d353eb8 | 1078 | if (eth_proto < 1514) { |
cb487f56 | 1079 | struct e802_hdr *et802 = (struct e802_hdr *)et; |
2d966958 | 1080 | /* |
da5ebe2c JH |
1081 | * Got a 802.2 packet. Check the other protocol field. |
1082 | * XXX VLAN over 802.2+SNAP not implemented! | |
2d966958 | 1083 | */ |
8d353eb8 | 1084 | eth_proto = ntohs(et802->et_prot); |
a3d991bd | 1085 | |
2a504df0 | 1086 | ip = (struct ip_udp_hdr *)(in_packet + E802_HDR_SIZE); |
2d966958 | 1087 | len -= E802_HDR_SIZE; |
a3d991bd | 1088 | |
8d353eb8 | 1089 | } else if (eth_proto != PROT_VLAN) { /* normal packet */ |
2a504df0 | 1090 | ip = (struct ip_udp_hdr *)(in_packet + ETHER_HDR_SIZE); |
2d966958 | 1091 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
1092 | |
1093 | } else { /* VLAN packet */ | |
c68cca35 JH |
1094 | struct vlan_ethernet_hdr *vet = |
1095 | (struct vlan_ethernet_hdr *)et; | |
a3d991bd | 1096 | |
4ef8d53c | 1097 | debug_cond(DEBUG_NET_PKT, "VLAN packet received\n"); |
0ebf04c6 | 1098 | |
a3d991bd WD |
1099 | /* too small packet? */ |
1100 | if (len < VLAN_ETHER_HDR_SIZE) | |
1101 | return; | |
1102 | ||
1103 | /* if no VLAN active */ | |
4fd5055f | 1104 | if ((ntohs(net_our_vlan) & VLAN_IDMASK) == VLAN_NONE |
643d1ab2 | 1105 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1106 | && iscdp == 0 |
1107 | #endif | |
1108 | ) | |
1109 | return; | |
1110 | ||
1111 | cti = ntohs(vet->vet_tag); | |
1112 | vlanid = cti & VLAN_IDMASK; | |
8d353eb8 | 1113 | eth_proto = ntohs(vet->vet_type); |
a3d991bd | 1114 | |
2a504df0 | 1115 | ip = (struct ip_udp_hdr *)(in_packet + VLAN_ETHER_HDR_SIZE); |
a3d991bd | 1116 | len -= VLAN_ETHER_HDR_SIZE; |
2d966958 WD |
1117 | } |
1118 | ||
4ef8d53c | 1119 | debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto); |
2d966958 | 1120 | |
643d1ab2 | 1121 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 1122 | if (iscdp) { |
0b4c5ff4 | 1123 | cdp_receive((uchar *)ip, len); |
a3d991bd WD |
1124 | return; |
1125 | } | |
1126 | #endif | |
1127 | ||
1128 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
1129 | if (vlanid == VLAN_NONE) | |
1130 | vlanid = (mynvlanid & VLAN_IDMASK); | |
1131 | /* not matched? */ | |
1132 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
1133 | return; | |
1134 | } | |
1135 | ||
8d353eb8 | 1136 | switch (eth_proto) { |
2d966958 | 1137 | case PROT_ARP: |
85d25e0e | 1138 | arp_receive(et, ip, len); |
289f932c | 1139 | break; |
2d966958 | 1140 | |
bf6cb247 | 1141 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1142 | case PROT_RARP: |
8b9c5322 | 1143 | rarp_receive(ip, len); |
2d966958 | 1144 | break; |
bf6cb247 | 1145 | #endif |
2d966958 | 1146 | case PROT_IP: |
4ef8d53c | 1147 | debug_cond(DEBUG_NET_PKT, "Got IP\n"); |
5cfaa4e5 | 1148 | /* Before we start poking the header, make sure it is there */ |
594c26f8 JH |
1149 | if (len < IP_UDP_HDR_SIZE) { |
1150 | debug("len bad %d < %lu\n", len, | |
bc0571fc | 1151 | (ulong)IP_UDP_HDR_SIZE); |
2d966958 WD |
1152 | return; |
1153 | } | |
5cfaa4e5 | 1154 | /* Check the packet length */ |
2d966958 | 1155 | if (len < ntohs(ip->ip_len)) { |
4ef8d53c | 1156 | debug("len bad %d < %d\n", len, ntohs(ip->ip_len)); |
2d966958 WD |
1157 | return; |
1158 | } | |
1159 | len = ntohs(ip->ip_len); | |
4ef8d53c | 1160 | debug_cond(DEBUG_NET_PKT, "len=%d, v=%02x\n", |
bc0571fc | 1161 | len, ip->ip_hl_v & 0xff); |
0ebf04c6 | 1162 | |
5cfaa4e5 | 1163 | /* Can't deal with anything except IPv4 */ |
d3c65b01 | 1164 | if ((ip->ip_hl_v & 0xf0) != 0x40) |
2d966958 | 1165 | return; |
5cfaa4e5 | 1166 | /* Can't deal with IP options (headers != 20 bytes) */ |
d3c65b01 | 1167 | if ((ip->ip_hl_v & 0x0f) > 0x05) |
6b52cfe1 | 1168 | return; |
5cfaa4e5 | 1169 | /* Check the Checksum of the header */ |
0da0fcd5 | 1170 | if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) { |
4ef8d53c | 1171 | debug("checksum bad\n"); |
2d966958 WD |
1172 | return; |
1173 | } | |
5cfaa4e5 | 1174 | /* If it is not for us, ignore it */ |
049a95a7 JH |
1175 | dst_ip = net_read_ip(&ip->ip_dst); |
1176 | if (net_ip.s_addr && dst_ip.s_addr != net_ip.s_addr && | |
1177 | dst_ip.s_addr != 0xFFFFFFFF) { | |
53a5c424 | 1178 | #ifdef CONFIG_MCAST_TFTP |
049a95a7 | 1179 | if (net_mcast_addr != dst_ip) |
53a5c424 | 1180 | #endif |
c819abee | 1181 | return; |
2d966958 | 1182 | } |
03eb129f | 1183 | /* Read source IP address for later use */ |
049a95a7 | 1184 | src_ip = net_read_ip(&ip->ip_src); |
5cfaa4e5 AR |
1185 | /* |
1186 | * The function returns the unchanged packet if it's not | |
1187 | * a fragment, and either the complete packet or NULL if | |
1188 | * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL) | |
1189 | */ | |
bc0571fc | 1190 | ip = net_defragment(ip, &len); |
ccb9ebef | 1191 | if (!ip) |
5cfaa4e5 | 1192 | return; |
2d966958 WD |
1193 | /* |
1194 | * watch for ICMP host redirects | |
1195 | * | |
8bde7f77 WD |
1196 | * There is no real handler code (yet). We just watch |
1197 | * for ICMP host redirect messages. In case anybody | |
1198 | * sees these messages: please contact me | |
1199 | * (wd@denx.de), or - even better - send me the | |
1200 | * necessary fixes :-) | |
2d966958 | 1201 | * |
8bde7f77 WD |
1202 | * Note: in all cases where I have seen this so far |
1203 | * it was a problem with the router configuration, | |
1204 | * for instance when a router was configured in the | |
1205 | * BOOTP reply, but the TFTP server was on the same | |
1206 | * subnet. So this is probably a warning that your | |
1207 | * configuration might be wrong. But I'm not really | |
1208 | * sure if there aren't any other situations. | |
4793ee65 SG |
1209 | * |
1210 | * Simon Glass <sjg@chromium.org>: We get an ICMP when | |
1211 | * we send a tftp packet to a dead connection, or when | |
1212 | * there is no server at the other end. | |
2d966958 WD |
1213 | */ |
1214 | if (ip->ip_p == IPPROTO_ICMP) { | |
8f79bb17 SG |
1215 | receive_icmp(ip, len, src_ip, et); |
1216 | return; | |
2d966958 WD |
1217 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1218 | return; | |
1219 | } | |
1220 | ||
4ef8d53c | 1221 | debug_cond(DEBUG_DEV_PKT, |
bc0571fc JH |
1222 | "received UDP (to=%pI4, from=%pI4, len=%d)\n", |
1223 | &dst_ip, &src_ip, len); | |
4ef8d53c | 1224 | |
8534bf9a SR |
1225 | #ifdef CONFIG_UDP_CHECKSUM |
1226 | if (ip->udp_xsum != 0) { | |
b2f50807 | 1227 | ulong xsum; |
8534bf9a SR |
1228 | ushort *sumptr; |
1229 | ushort sumlen; | |
1230 | ||
1231 | xsum = ip->ip_p; | |
1232 | xsum += (ntohs(ip->udp_len)); | |
049a95a7 JH |
1233 | xsum += (ntohl(ip->ip_src.s_addr) >> 16) & 0x0000ffff; |
1234 | xsum += (ntohl(ip->ip_src.s_addr) >> 0) & 0x0000ffff; | |
1235 | xsum += (ntohl(ip->ip_dst.s_addr) >> 16) & 0x0000ffff; | |
1236 | xsum += (ntohl(ip->ip_dst.s_addr) >> 0) & 0x0000ffff; | |
8534bf9a SR |
1237 | |
1238 | sumlen = ntohs(ip->udp_len); | |
bc0571fc | 1239 | sumptr = (ushort *)&(ip->udp_src); |
8534bf9a SR |
1240 | |
1241 | while (sumlen > 1) { | |
b2f50807 | 1242 | ushort sumdata; |
8534bf9a SR |
1243 | |
1244 | sumdata = *sumptr++; | |
1245 | xsum += ntohs(sumdata); | |
1246 | sumlen -= 2; | |
1247 | } | |
1248 | if (sumlen > 0) { | |
b2f50807 | 1249 | ushort sumdata; |
8534bf9a | 1250 | |
bc0571fc | 1251 | sumdata = *(unsigned char *)sumptr; |
b2f50807 | 1252 | sumdata = (sumdata << 8) & 0xff00; |
8534bf9a SR |
1253 | xsum += sumdata; |
1254 | } | |
1255 | while ((xsum >> 16) != 0) { | |
3e38e429 LC |
1256 | xsum = (xsum & 0x0000ffff) + |
1257 | ((xsum >> 16) & 0x0000ffff); | |
8534bf9a SR |
1258 | } |
1259 | if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) { | |
9b55a253 | 1260 | printf(" UDP wrong checksum %08lx %08x\n", |
bc0571fc | 1261 | xsum, ntohs(ip->udp_xsum)); |
8534bf9a SR |
1262 | return; |
1263 | } | |
1264 | } | |
1265 | #endif | |
1266 | ||
bc0571fc | 1267 | #if defined(CONFIG_NETCONSOLE) && !(CONFIG_SPL_BUILD) |
594c26f8 | 1268 | nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE, |
bc0571fc JH |
1269 | src_ip, |
1270 | ntohs(ip->udp_dst), | |
1271 | ntohs(ip->udp_src), | |
1272 | ntohs(ip->udp_len) - UDP_HDR_SIZE); | |
68ceb29e | 1273 | #endif |
2d966958 | 1274 | /* |
bc0571fc | 1275 | * IP header OK. Pass the packet to the current handler. |
2d966958 | 1276 | */ |
ece223b5 | 1277 | (*udp_packet_handler)((uchar *)ip + IP_UDP_HDR_SIZE, |
bc0571fc JH |
1278 | ntohs(ip->udp_dst), |
1279 | src_ip, | |
1280 | ntohs(ip->udp_src), | |
1281 | ntohs(ip->udp_len) - UDP_HDR_SIZE); | |
2d966958 WD |
1282 | break; |
1283 | } | |
1284 | } | |
1285 | ||
2d966958 WD |
1286 | /**********************************************************************/ |
1287 | ||
e4bf0c5c | 1288 | static int net_check_prereq(enum proto_t protocol) |
2d966958 WD |
1289 | { |
1290 | switch (protocol) { | |
6e592385 | 1291 | /* Fall through */ |
643d1ab2 | 1292 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 1293 | case PING: |
049a95a7 | 1294 | if (net_ping_ip.s_addr == 0) { |
4f63acd0 | 1295 | puts("*** ERROR: ping address not given\n"); |
92895de9 | 1296 | return 1; |
6e592385 WD |
1297 | } |
1298 | goto common; | |
cbd8a35c | 1299 | #endif |
643d1ab2 | 1300 | #if defined(CONFIG_CMD_SNTP) |
ea287deb | 1301 | case SNTP: |
049a95a7 | 1302 | if (net_ntp_server.s_addr == 0) { |
4f63acd0 | 1303 | puts("*** ERROR: NTP server address not given\n"); |
92895de9 | 1304 | return 1; |
ea287deb WD |
1305 | } |
1306 | goto common; | |
1307 | #endif | |
1a32bf41 RG |
1308 | #if defined(CONFIG_CMD_DNS) |
1309 | case DNS: | |
049a95a7 | 1310 | if (net_dns_server.s_addr == 0) { |
1a32bf41 RG |
1311 | puts("*** ERROR: DNS server address not given\n"); |
1312 | return 1; | |
1313 | } | |
1314 | goto common; | |
1315 | #endif | |
643d1ab2 | 1316 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 1317 | case NFS: |
73a8b27c | 1318 | #endif |
bc0571fc | 1319 | /* Fall through */ |
e4bf0c5c | 1320 | case TFTPGET: |
1fb7cd49 | 1321 | case TFTPPUT: |
049a95a7 | 1322 | if (net_server_ip.s_addr == 0) { |
4f63acd0 | 1323 | puts("*** ERROR: `serverip' not set\n"); |
92895de9 | 1324 | return 1; |
6e592385 | 1325 | } |
4f63acd0 LC |
1326 | #if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \ |
1327 | defined(CONFIG_CMD_DNS) | |
1328 | common: | |
73a8b27c | 1329 | #endif |
8b6bbe10 | 1330 | /* Fall through */ |
73a8b27c | 1331 | |
8b6bbe10 | 1332 | case NETCONS: |
7a83af07 | 1333 | case TFTPSRV: |
049a95a7 | 1334 | if (net_ip.s_addr == 0) { |
4f63acd0 | 1335 | puts("*** ERROR: `ipaddr' not set\n"); |
92895de9 | 1336 | return 1; |
6e592385 WD |
1337 | } |
1338 | /* Fall through */ | |
2d966958 | 1339 | |
bf6cb247 | 1340 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1341 | case RARP: |
bf6cb247 | 1342 | #endif |
2d966958 | 1343 | case BOOTP: |
a3d991bd | 1344 | case CDP: |
bf6cb247 | 1345 | case DHCP: |
d22c338e | 1346 | case LINKLOCAL: |
0adb5b76 | 1347 | if (memcmp(net_ethaddr, "\0\0\0\0\0\0", 6) == 0) { |
4f63acd0 | 1348 | int num = eth_get_dev_index(); |
2d966958 | 1349 | |
6e592385 WD |
1350 | switch (num) { |
1351 | case -1: | |
4f63acd0 | 1352 | puts("*** ERROR: No ethernet found.\n"); |
92895de9 | 1353 | return 1; |
6e592385 | 1354 | case 0: |
4f63acd0 | 1355 | puts("*** ERROR: `ethaddr' not set\n"); |
2d966958 | 1356 | break; |
6e592385 | 1357 | default: |
4f63acd0 | 1358 | printf("*** ERROR: `eth%daddr' not set\n", |
bc0571fc | 1359 | num); |
2d966958 | 1360 | break; |
6e592385 | 1361 | } |
2d966958 | 1362 | |
bc0571fc | 1363 | net_start_again(); |
92895de9 | 1364 | return 2; |
6e592385 WD |
1365 | } |
1366 | /* Fall through */ | |
1367 | default: | |
92895de9 | 1368 | return 0; |
2d966958 | 1369 | } |
92895de9 | 1370 | return 0; /* OK */ |
2d966958 WD |
1371 | } |
1372 | /**********************************************************************/ | |
1373 | ||
a3d991bd | 1374 | int |
1203fcce | 1375 | net_eth_hdr_size(void) |
a3d991bd WD |
1376 | { |
1377 | ushort myvlanid; | |
2d966958 | 1378 | |
4fd5055f | 1379 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1380 | if (myvlanid == (ushort)-1) |
1381 | myvlanid = VLAN_NONE; | |
1382 | ||
3e38e429 LC |
1383 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : |
1384 | VLAN_ETHER_HDR_SIZE; | |
a3d991bd WD |
1385 | } |
1386 | ||
1203fcce | 1387 | int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot) |
2d966958 | 1388 | { |
cb487f56 | 1389 | struct ethernet_hdr *et = (struct ethernet_hdr *)xet; |
a3d991bd WD |
1390 | ushort myvlanid; |
1391 | ||
4fd5055f | 1392 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1393 | if (myvlanid == (ushort)-1) |
1394 | myvlanid = VLAN_NONE; | |
2d966958 | 1395 | |
0adb5b76 JH |
1396 | memcpy(et->et_dest, dest_ethaddr, 6); |
1397 | memcpy(et->et_src, net_ethaddr, 6); | |
a3d991bd | 1398 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
c819abee | 1399 | et->et_protlen = htons(prot); |
a3d991bd WD |
1400 | return ETHER_HDR_SIZE; |
1401 | } else { | |
c68cca35 JH |
1402 | struct vlan_ethernet_hdr *vet = |
1403 | (struct vlan_ethernet_hdr *)xet; | |
2d966958 | 1404 | |
a3d991bd WD |
1405 | vet->vet_vlan_type = htons(PROT_VLAN); |
1406 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1407 | vet->vet_type = htons(prot); | |
1408 | return VLAN_ETHER_HDR_SIZE; | |
1409 | } | |
1410 | } | |
2d966958 | 1411 | |
e7111015 JH |
1412 | int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot) |
1413 | { | |
1414 | ushort protlen; | |
1415 | ||
1416 | memcpy(et->et_dest, addr, 6); | |
0adb5b76 | 1417 | memcpy(et->et_src, net_ethaddr, 6); |
e7111015 JH |
1418 | protlen = ntohs(et->et_protlen); |
1419 | if (protlen == PROT_VLAN) { | |
1420 | struct vlan_ethernet_hdr *vet = | |
1421 | (struct vlan_ethernet_hdr *)et; | |
1422 | vet->vet_type = htons(prot); | |
1423 | return VLAN_ETHER_HDR_SIZE; | |
1424 | } else if (protlen > 1514) { | |
1425 | et->et_protlen = htons(prot); | |
1426 | return ETHER_HDR_SIZE; | |
1427 | } else { | |
1428 | /* 802.2 + SNAP */ | |
1429 | struct e802_hdr *et802 = (struct e802_hdr *)et; | |
1430 | et802->et_prot = htons(prot); | |
1431 | return E802_HDR_SIZE; | |
1432 | } | |
1433 | } | |
1434 | ||
049a95a7 | 1435 | void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source) |
2d966958 | 1436 | { |
4b11c916 | 1437 | struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt; |
2d966958 WD |
1438 | |
1439 | /* | |
4b11c916 | 1440 | * Construct an IP header. |
2d966958 | 1441 | */ |
3e38e429 LC |
1442 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
1443 | ip->ip_hl_v = 0x45; | |
2d966958 | 1444 | ip->ip_tos = 0; |
4b11c916 | 1445 | ip->ip_len = htons(IP_HDR_SIZE); |
bc0571fc | 1446 | ip->ip_id = htons(net_ip_id++); |
e0c07b86 | 1447 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
2d966958 | 1448 | ip->ip_ttl = 255; |
2d966958 | 1449 | ip->ip_sum = 0; |
3e38e429 | 1450 | /* already in network byte order */ |
049a95a7 | 1451 | net_copy_ip((void *)&ip->ip_src, &source); |
4b11c916 | 1452 | /* already in network byte order */ |
049a95a7 | 1453 | net_copy_ip((void *)&ip->ip_dst, &dest); |
4b11c916 JH |
1454 | } |
1455 | ||
049a95a7 | 1456 | void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport, |
4b11c916 JH |
1457 | int len) |
1458 | { | |
1459 | struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt; | |
1460 | ||
1461 | /* | |
1462 | * If the data is an odd number of bytes, zero the | |
1463 | * byte after the last byte so that the checksum | |
1464 | * will work. | |
1465 | */ | |
1466 | if (len & 1) | |
1467 | pkt[IP_UDP_HDR_SIZE + len] = 0; | |
1468 | ||
049a95a7 | 1469 | net_set_ip_header(pkt, dest, net_ip); |
4b11c916 JH |
1470 | ip->ip_len = htons(IP_UDP_HDR_SIZE + len); |
1471 | ip->ip_p = IPPROTO_UDP; | |
0da0fcd5 | 1472 | ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE); |
4b11c916 | 1473 | |
2d966958 WD |
1474 | ip->udp_src = htons(sport); |
1475 | ip->udp_dst = htons(dport); | |
594c26f8 | 1476 | ip->udp_len = htons(UDP_HDR_SIZE + len); |
2d966958 | 1477 | ip->udp_xsum = 0; |
2d966958 WD |
1478 | } |
1479 | ||
4f63acd0 | 1480 | void copy_filename(char *dst, const char *src, int size) |
2d966958 WD |
1481 | { |
1482 | if (*src && (*src == '"')) { | |
1483 | ++src; | |
1484 | --size; | |
1485 | } | |
1486 | ||
d3c65b01 | 1487 | while ((--size > 0) && *src && (*src != '"')) |
2d966958 | 1488 | *dst++ = *src++; |
2d966958 WD |
1489 | *dst = '\0'; |
1490 | } | |
1491 | ||
3e38e429 LC |
1492 | #if defined(CONFIG_CMD_NFS) || \ |
1493 | defined(CONFIG_CMD_SNTP) || \ | |
1494 | defined(CONFIG_CMD_DNS) | |
1a32bf41 | 1495 | /* |
9739946c RG |
1496 | * make port a little random (1024-17407) |
1497 | * This keeps the math somewhat trivial to compute, and seems to work with | |
1498 | * all supported protocols/clients/servers | |
1a32bf41 RG |
1499 | */ |
1500 | unsigned int random_port(void) | |
1501 | { | |
9739946c | 1502 | return 1024 + (get_timer(0) % 0x4000); |
1a32bf41 RG |
1503 | } |
1504 | #endif | |
1505 | ||
049a95a7 | 1506 | void ip_to_string(struct in_addr x, char *s) |
2d966958 | 1507 | { |
049a95a7 | 1508 | x.s_addr = ntohl(x.s_addr); |
4f63acd0 | 1509 | sprintf(s, "%d.%d.%d.%d", |
049a95a7 JH |
1510 | (int) ((x.s_addr >> 24) & 0xff), |
1511 | (int) ((x.s_addr >> 16) & 0xff), | |
1512 | (int) ((x.s_addr >> 8) & 0xff), | |
1513 | (int) ((x.s_addr >> 0) & 0xff) | |
6e592385 | 1514 | ); |
2d966958 WD |
1515 | } |
1516 | ||
4fd5055f | 1517 | void vlan_to_string(ushort x, char *s) |
a3d991bd WD |
1518 | { |
1519 | x = ntohs(x); | |
1520 | ||
1521 | if (x == (ushort)-1) | |
1522 | x = VLAN_NONE; | |
1523 | ||
1524 | if (x == VLAN_NONE) | |
1525 | strcpy(s, "none"); | |
1526 | else | |
1527 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1528 | } | |
1529 | ||
4fd5055f | 1530 | ushort string_to_vlan(const char *s) |
a3d991bd WD |
1531 | { |
1532 | ushort id; | |
1533 | ||
1534 | if (s == NULL) | |
b9711de1 | 1535 | return htons(VLAN_NONE); |
a3d991bd WD |
1536 | |
1537 | if (*s < '0' || *s > '9') | |
1538 | id = VLAN_NONE; | |
1539 | else | |
1540 | id = (ushort)simple_strtoul(s, NULL, 10); | |
1541 | ||
b9711de1 | 1542 | return htons(id); |
a3d991bd WD |
1543 | } |
1544 | ||
4fd5055f | 1545 | ushort getenv_vlan(char *var) |
a3d991bd | 1546 | { |
4fd5055f | 1547 | return string_to_vlan(getenv(var)); |
a3d991bd | 1548 | } |