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f739fcd8 | 1 | // SPDX-License-Identifier: GPL-2.0 |
2d966958 WD |
2 | /* |
3 | * Copied from Linux Monitor (LiMon) - Networking. | |
4 | * | |
5 | * Copyright 1994 - 2000 Neil Russell. | |
6 | * (See License) | |
7 | * Copyright 2000 Roland Borde | |
8 | * Copyright 2000 Paolo Scaffardi | |
9 | * Copyright 2000-2002 Wolfgang Denk, wd@denx.de | |
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 | * | |
6de98b60 | 27 | * LINKLOCAL: |
d22c338e JH |
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 | 74 | * |
d8970dae LF |
75 | * |
76 | * WOL: | |
77 | * | |
78 | * Prerequisites: - own ethernet address | |
79 | * We want: - magic packet or timeout | |
80 | * Next step: none | |
2d966958 WD |
81 | */ |
82 | ||
83 | ||
52f24238 | 84 | #include <bootstage.h> |
2d966958 | 85 | #include <command.h> |
24b852a7 | 86 | #include <console.h> |
c7694dd4 | 87 | #include <env.h> |
f3998fdc | 88 | #include <env_internal.h> |
60304592 | 89 | #include <errno.h> |
8e8ccfe1 | 90 | #include <image.h> |
f7ae49fc | 91 | #include <log.h> |
2d966958 | 92 | #include <net.h> |
ffdbf3ba VM |
93 | #include <net6.h> |
94 | #include <ndisc.h> | |
443d3191 DM |
95 | #include <net/fastboot_udp.h> |
96 | #include <net/fastboot_tcp.h> | |
34696958 | 97 | #include <net/tftp.h> |
09bd3d0b | 98 | #include <net/ncsi.h> |
3eaac630 RF |
99 | #if defined(CONFIG_CMD_PCAP) |
100 | #include <net/pcap.h> | |
101 | #endif | |
b43ea1bf | 102 | #include <net/udp.h> |
2d8d190c | 103 | #if defined(CONFIG_LED_STATUS) |
fc3e2165 | 104 | #include <miiphy.h> |
4545f4e6 | 105 | #include <status_led.h> |
fc3e2165 | 106 | #endif |
4545f4e6 JH |
107 | #include <watchdog.h> |
108 | #include <linux/compiler.h> | |
f43b2df3 | 109 | #include <test/test.h> |
a0245818 SE |
110 | #include <net/tcp.h> |
111 | #include <net/wget.h> | |
4545f4e6 JH |
112 | #include "arp.h" |
113 | #include "bootp.h" | |
f575ae1f | 114 | #include "cdp.h" |
1a32bf41 RG |
115 | #if defined(CONFIG_CMD_DNS) |
116 | #include "dns.h" | |
117 | #endif | |
d22c338e | 118 | #include "link_local.h" |
4545f4e6 | 119 | #include "nfs.h" |
a36b12f9 | 120 | #include "ping.h" |
4545f4e6 | 121 | #include "rarp.h" |
d8970dae LF |
122 | #if defined(CONFIG_CMD_WOL) |
123 | #include "wol.h" | |
124 | #endif | |
a0245818 | 125 | #include "dhcpv6.h" |
6de98b60 | 126 | #include "net_rand.h" |
2d966958 | 127 | |
2d966958 WD |
128 | /** BOOTP EXTENTIONS **/ |
129 | ||
3e38e429 | 130 | /* Our subnet mask (0=unknown) */ |
049a95a7 | 131 | struct in_addr net_netmask; |
3e38e429 | 132 | /* Our gateways IP address */ |
049a95a7 | 133 | struct in_addr net_gateway; |
3e38e429 | 134 | /* Our DNS IP address */ |
049a95a7 | 135 | struct in_addr net_dns_server; |
1fe80d79 | 136 | #if defined(CONFIG_BOOTP_DNS2) |
3e38e429 | 137 | /* Our 2nd DNS IP address */ |
049a95a7 | 138 | struct in_addr net_dns_server2; |
3e38e429 | 139 | #endif |
a0245818 SE |
140 | /* Indicates whether the pxe path prefix / config file was specified in dhcp option */ |
141 | char *pxelinux_configfile; | |
2d966958 WD |
142 | |
143 | /** END OF BOOTP EXTENTIONS **/ | |
144 | ||
3e38e429 | 145 | /* Our ethernet address */ |
0adb5b76 | 146 | u8 net_ethaddr[6]; |
3e38e429 | 147 | /* Boot server enet address */ |
0adb5b76 | 148 | u8 net_server_ethaddr[6]; |
3e38e429 | 149 | /* Our IP addr (0 = unknown) */ |
049a95a7 | 150 | struct in_addr net_ip; |
3e38e429 | 151 | /* Server IP addr (0 = unknown) */ |
049a95a7 | 152 | struct in_addr net_server_ip; |
3e38e429 | 153 | /* Current receive packet */ |
1203fcce | 154 | uchar *net_rx_packet; |
3e38e429 | 155 | /* Current rx packet length */ |
1203fcce | 156 | int net_rx_packet_len; |
3e38e429 | 157 | /* IP packet ID */ |
bc0571fc | 158 | static unsigned net_ip_id; |
3e38e429 | 159 | /* Ethernet bcast address */ |
0adb5b76 JH |
160 | const u8 net_bcast_ethaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
161 | const u8 net_null_ethaddr[6]; | |
0efe1bcf | 162 | #if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER) |
bc0571fc | 163 | void (*push_packet)(void *, int len) = 0; |
f85b6071 | 164 | #endif |
3e38e429 | 165 | /* Network loop state */ |
22f6e99d | 166 | enum net_loop_state net_state; |
3e38e429 | 167 | /* Tried all network devices */ |
bc0571fc | 168 | int net_restart_wrap; |
3e38e429 | 169 | /* Network loop restarted */ |
bc0571fc | 170 | static int net_restarted; |
3e38e429 | 171 | /* At least one device configured */ |
bc0571fc | 172 | static int net_dev_exists; |
2d966958 | 173 | |
6e592385 | 174 | /* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */ |
3e38e429 | 175 | /* default is without VLAN */ |
4fd5055f | 176 | ushort net_our_vlan = 0xFFFF; |
3e38e429 | 177 | /* ditto */ |
4fd5055f | 178 | ushort net_native_vlan = 0xFFFF; |
a3d991bd | 179 | |
3e38e429 | 180 | /* Boot File name */ |
11a69ff8 | 181 | char net_boot_file_name[1024]; |
449312c1 AG |
182 | /* Indicates whether the file name was specified on the command line */ |
183 | bool net_boot_file_name_explicit; | |
1411157d JH |
184 | /* The actual transferred size of the bootfile (in bytes) */ |
185 | u32 net_boot_file_size; | |
186 | /* Boot file size in blocks as reported by the DHCP server */ | |
187 | u32 net_boot_file_expected_size_in_blocks; | |
2d966958 | 188 | |
1203fcce | 189 | static uchar net_pkt_buf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; |
2a504df0 JH |
190 | /* Receive packets */ |
191 | uchar *net_rx_packets[PKTBUFSRX]; | |
ece223b5 JH |
192 | /* Current UDP RX packet handler */ |
193 | static rxhand_f *udp_packet_handler; | |
194 | /* Current ARP RX packet handler */ | |
195 | static rxhand_f *arp_packet_handler; | |
39bccd21 | 196 | #ifdef CONFIG_CMD_TFTPPUT |
ece223b5 JH |
197 | /* Current ICMP rx handler */ |
198 | static rxhand_icmp_f *packet_icmp_handler; | |
39bccd21 | 199 | #endif |
3e38e429 | 200 | /* Current timeout handler */ |
bc0571fc | 201 | static thand_f *time_handler; |
3e38e429 | 202 | /* Time base value */ |
bc0571fc | 203 | static ulong time_start; |
3e38e429 | 204 | /* Current timeout value */ |
bc0571fc | 205 | static ulong time_delta; |
3e38e429 | 206 | /* THE transmit packet */ |
1203fcce | 207 | uchar *net_tx_packet; |
2d966958 | 208 | |
e4bf0c5c | 209 | static int net_check_prereq(enum proto_t protocol); |
2d966958 | 210 | |
bc0571fc | 211 | static int net_try_count; |
67b96e87 | 212 | |
b63056d6 JL |
213 | int __maybe_unused net_busy_flag; |
214 | ||
73a8b27c WD |
215 | /**********************************************************************/ |
216 | ||
fd305633 JH |
217 | static int on_ipaddr(const char *name, const char *value, enum env_op op, |
218 | int flags) | |
219 | { | |
220 | if (flags & H_PROGRAMMATIC) | |
221 | return 0; | |
222 | ||
223 | net_ip = string_to_ip(value); | |
224 | ||
225 | return 0; | |
226 | } | |
227 | U_BOOT_ENV_CALLBACK(ipaddr, on_ipaddr); | |
228 | ||
229 | static int on_gatewayip(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_gateway = string_to_ip(value); | |
236 | ||
237 | return 0; | |
238 | } | |
239 | U_BOOT_ENV_CALLBACK(gatewayip, on_gatewayip); | |
240 | ||
241 | static int on_netmask(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_netmask = string_to_ip(value); | |
248 | ||
249 | return 0; | |
250 | } | |
251 | U_BOOT_ENV_CALLBACK(netmask, on_netmask); | |
252 | ||
253 | static int on_serverip(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_server_ip = string_to_ip(value); | |
260 | ||
261 | return 0; | |
262 | } | |
263 | U_BOOT_ENV_CALLBACK(serverip, on_serverip); | |
264 | ||
265 | static int on_nvlan(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_native_vlan = string_to_vlan(value); | |
272 | ||
273 | return 0; | |
274 | } | |
275 | U_BOOT_ENV_CALLBACK(nvlan, on_nvlan); | |
276 | ||
277 | static int on_vlan(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_our_vlan = string_to_vlan(value); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | U_BOOT_ENV_CALLBACK(vlan, on_vlan); | |
288 | ||
289 | #if defined(CONFIG_CMD_DNS) | |
290 | static int on_dnsip(const char *name, const char *value, enum env_op op, | |
291 | int flags) | |
292 | { | |
293 | if (flags & H_PROGRAMMATIC) | |
294 | return 0; | |
295 | ||
296 | net_dns_server = string_to_ip(value); | |
297 | ||
298 | return 0; | |
299 | } | |
300 | U_BOOT_ENV_CALLBACK(dnsip, on_dnsip); | |
301 | #endif | |
302 | ||
e4a3d57d SG |
303 | /* |
304 | * Check if autoload is enabled. If so, use either NFS or TFTP to download | |
305 | * the boot file. | |
306 | */ | |
307 | void net_auto_load(void) | |
308 | { | |
a6ab4b54 | 309 | #if defined(CONFIG_CMD_NFS) && !defined(CONFIG_SPL_BUILD) |
00caae6d | 310 | const char *s = env_get("autoload"); |
e4a3d57d | 311 | |
ec8a252c | 312 | if (s != NULL && strcmp(s, "NFS") == 0) { |
3855cad6 JH |
313 | if (net_check_prereq(NFS)) { |
314 | /* We aren't expecting to get a serverip, so just accept the assigned IP */ | |
43407539 SG |
315 | if (IS_ENABLED(CONFIG_BOOTP_SERVERIP)) { |
316 | net_set_state(NETLOOP_SUCCESS); | |
317 | } else { | |
318 | printf("Cannot autoload with NFS\n"); | |
319 | net_set_state(NETLOOP_FAIL); | |
320 | } | |
3855cad6 JH |
321 | return; |
322 | } | |
ec8a252c JH |
323 | /* |
324 | * Use NFS to load the bootfile. | |
325 | */ | |
68c76a3a | 326 | nfs_start(); |
ec8a252c JH |
327 | return; |
328 | } | |
e4a3d57d | 329 | #endif |
bfebc8c9 | 330 | if (env_get_yesno("autoload") == 0) { |
ec8a252c JH |
331 | /* |
332 | * Just use BOOTP/RARP to configure system; | |
333 | * Do not use TFTP to load the bootfile. | |
334 | */ | |
335 | net_set_state(NETLOOP_SUCCESS); | |
336 | return; | |
e4a3d57d | 337 | } |
3855cad6 JH |
338 | if (net_check_prereq(TFTPGET)) { |
339 | /* We aren't expecting to get a serverip, so just accept the assigned IP */ | |
43407539 SG |
340 | if (IS_ENABLED(CONFIG_BOOTP_SERVERIP)) { |
341 | net_set_state(NETLOOP_SUCCESS); | |
342 | } else { | |
343 | printf("Cannot autoload with TFTPGET\n"); | |
344 | net_set_state(NETLOOP_FAIL); | |
345 | } | |
3855cad6 JH |
346 | return; |
347 | } | |
8885c5fe | 348 | tftp_start(TFTPGET); |
e4a3d57d SG |
349 | } |
350 | ||
c3f0278e | 351 | static int net_init_loop(void) |
2f70c49e | 352 | { |
6de98b60 EM |
353 | static bool first_call = true; |
354 | ||
ffdbf3ba | 355 | if (eth_get_dev()) { |
0adb5b76 | 356 | memcpy(net_ethaddr, eth_get_ethaddr(), 6); |
ffdbf3ba VM |
357 | |
358 | if (IS_ENABLED(CONFIG_IPV6)) { | |
359 | ip6_make_lladdr(&net_link_local_ip6, net_ethaddr); | |
360 | if (!memcmp(&net_ip6, &net_null_addr_ip6, | |
361 | sizeof(struct in6_addr))) | |
362 | memcpy(&net_ip6, &net_link_local_ip6, | |
363 | sizeof(struct in6_addr)); | |
364 | } | |
365 | } | |
c3f0278e SA |
366 | else |
367 | /* | |
368 | * Not ideal, but there's no way to get the actual error, and I | |
369 | * don't feel like fixing all the users of eth_get_dev to deal | |
370 | * with errors. | |
371 | */ | |
372 | return -ENONET; | |
3c172c4f | 373 | |
6de98b60 EM |
374 | if (IS_ENABLED(CONFIG_IPV6_ROUTER_DISCOVERY)) |
375 | if (first_call && use_ip6) { | |
376 | first_call = false; | |
377 | srand_mac(); /* This is for rand used in ip6_send_rs. */ | |
378 | net_loop(RS); | |
379 | } | |
c3f0278e | 380 | return 0; |
2f70c49e HS |
381 | } |
382 | ||
ece223b5 JH |
383 | static void net_clear_handlers(void) |
384 | { | |
385 | net_set_udp_handler(NULL); | |
386 | net_set_arp_handler(NULL); | |
bc0571fc | 387 | net_set_timeout_handler(0, NULL); |
ece223b5 JH |
388 | } |
389 | ||
390 | static void net_cleanup_loop(void) | |
391 | { | |
392 | net_clear_handlers(); | |
393 | } | |
394 | ||
c3f0278e | 395 | int net_init(void) |
46c495d5 JH |
396 | { |
397 | static int first_call = 1; | |
398 | ||
399 | if (first_call) { | |
400 | /* | |
401 | * Setup packet buffers, aligned correctly. | |
402 | */ | |
403 | int i; | |
404 | ||
1203fcce JH |
405 | net_tx_packet = &net_pkt_buf[0] + (PKTALIGN - 1); |
406 | net_tx_packet -= (ulong)net_tx_packet % PKTALIGN; | |
2a504df0 | 407 | for (i = 0; i < PKTBUFSRX; i++) { |
1203fcce JH |
408 | net_rx_packets[i] = net_tx_packet + |
409 | (i + 1) * PKTSIZE_ALIGN; | |
2a504df0 | 410 | } |
85d25e0e | 411 | arp_init(); |
ffdbf3ba | 412 | ndisc_init(); |
46c495d5 JH |
413 | net_clear_handlers(); |
414 | ||
415 | /* Only need to setup buffer pointers once. */ | |
416 | first_call = 0; | |
a3bf193b YCLP |
417 | if (IS_ENABLED(CONFIG_PROT_TCP)) |
418 | tcp_set_tcp_state(TCP_CLOSED); | |
46c495d5 JH |
419 | } |
420 | ||
c3f0278e | 421 | return net_init_loop(); |
46c495d5 JH |
422 | } |
423 | ||
2d966958 WD |
424 | /**********************************************************************/ |
425 | /* | |
426 | * Main network processing loop. | |
427 | */ | |
428 | ||
bc0571fc | 429 | int net_loop(enum proto_t protocol) |
2d966958 | 430 | { |
60304592 | 431 | int ret = -EINVAL; |
60177b26 | 432 | enum net_loop_state prev_net_state = net_state; |
2d966958 | 433 | |
def7a5c0 MS |
434 | #if defined(CONFIG_CMD_PING) |
435 | if (protocol != PING) | |
436 | net_ping_ip.s_addr = 0; | |
437 | #endif | |
bc0571fc JH |
438 | net_restarted = 0; |
439 | net_dev_exists = 0; | |
440 | net_try_count = 1; | |
441 | debug_cond(DEBUG_INT_STATE, "--- net_loop Entry\n"); | |
73a8b27c | 442 | |
09bd3d0b SMJ |
443 | #ifdef CONFIG_PHY_NCSI |
444 | if (phy_interface_is_ncsi() && protocol != NCSI && !ncsi_active()) { | |
445 | printf("%s: configuring NCSI first\n", __func__); | |
446 | if (net_loop(NCSI) < 0) | |
447 | return ret; | |
448 | eth_init_state_only(); | |
449 | goto restart; | |
450 | } | |
451 | #endif | |
452 | ||
573f14fe | 453 | bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start"); |
46c495d5 | 454 | net_init(); |
d9506cd4 | 455 | if (eth_is_on_demand_init()) { |
b1bf6f2c | 456 | eth_halt(); |
f8be7d65 | 457 | eth_set_current(); |
60304592 JH |
458 | ret = eth_init(); |
459 | if (ret < 0) { | |
f8be7d65 | 460 | eth_halt(); |
60304592 | 461 | return ret; |
f8be7d65 | 462 | } |
bc0571fc | 463 | } else { |
d2eaec60 | 464 | eth_init_state_only(); |
bc0571fc | 465 | } |
4b290d4a | 466 | |
2d966958 | 467 | restart: |
b63056d6 JL |
468 | #ifdef CONFIG_USB_KEYBOARD |
469 | net_busy_flag = 0; | |
470 | #endif | |
22f6e99d | 471 | net_set_state(NETLOOP_CONTINUE); |
2d966958 WD |
472 | |
473 | /* | |
474 | * Start the ball rolling with the given start function. From | |
475 | * here on, this code is a state machine driven by received | |
476 | * packets and timer events. | |
477 | */ | |
bc0571fc JH |
478 | debug_cond(DEBUG_INT_STATE, "--- net_loop Init\n"); |
479 | net_init_loop(); | |
2d966958 | 480 | |
f43b2df3 SG |
481 | if (!test_eth_enabled()) |
482 | return 0; | |
483 | ||
4f63acd0 | 484 | switch (net_check_prereq(protocol)) { |
2d966958 WD |
485 | case 1: |
486 | /* network not configured */ | |
b1bf6f2c | 487 | eth_halt(); |
60177b26 | 488 | net_set_state(prev_net_state); |
60304592 | 489 | return -ENODEV; |
2d966958 | 490 | |
2d966958 WD |
491 | case 2: |
492 | /* network device not configured */ | |
493 | break; | |
2d966958 WD |
494 | |
495 | case 0: | |
bc0571fc | 496 | net_dev_exists = 1; |
1411157d | 497 | net_boot_file_size = 0; |
2d966958 | 498 | switch (protocol) { |
808f13d8 | 499 | #ifdef CONFIG_CMD_TFTPBOOT |
e4bf0c5c | 500 | case TFTPGET: |
1fb7cd49 SG |
501 | #ifdef CONFIG_CMD_TFTPPUT |
502 | case TFTPPUT: | |
503 | #endif | |
2d966958 | 504 | /* always use ARP to get server ethernet address */ |
8885c5fe | 505 | tftp_start(protocol); |
2d966958 | 506 | break; |
808f13d8 | 507 | #endif |
7a83af07 LC |
508 | #ifdef CONFIG_CMD_TFTPSRV |
509 | case TFTPSRV: | |
8885c5fe | 510 | tftp_start_server(); |
7a83af07 LC |
511 | break; |
512 | #endif | |
7d04986a | 513 | #if CONFIG_IS_ENABLED(UDP_FUNCTION_FASTBOOT) |
443d3191 DM |
514 | case FASTBOOT_UDP: |
515 | fastboot_udp_start_server(); | |
516 | break; | |
517 | #endif | |
7d04986a | 518 | #if CONFIG_IS_ENABLED(TCP_FUNCTION_FASTBOOT) |
443d3191 DM |
519 | case FASTBOOT_TCP: |
520 | fastboot_tcp_start_server(); | |
f73a7df9 AK |
521 | break; |
522 | #endif | |
643d1ab2 | 523 | #if defined(CONFIG_CMD_DHCP) |
2d966958 | 524 | case DHCP: |
7044c6bb | 525 | bootp_reset(); |
049a95a7 | 526 | net_ip.s_addr = 0; |
7044c6bb | 527 | dhcp_request(); /* Basically same as BOOTP */ |
2d966958 | 528 | break; |
610f2e9c | 529 | #endif |
a0245818 SE |
530 | case DHCP6: |
531 | if (IS_ENABLED(CONFIG_CMD_DHCP6)) | |
532 | dhcp6_start(); | |
533 | break; | |
808f13d8 | 534 | #if defined(CONFIG_CMD_BOOTP) |
2d966958 | 535 | case BOOTP: |
7044c6bb | 536 | bootp_reset(); |
049a95a7 | 537 | net_ip.s_addr = 0; |
7044c6bb | 538 | bootp_request(); |
2d966958 | 539 | break; |
808f13d8 | 540 | #endif |
bf6cb247 | 541 | #if defined(CONFIG_CMD_RARP) |
2d966958 | 542 | case RARP: |
698d78e5 | 543 | rarp_try = 0; |
049a95a7 | 544 | net_ip.s_addr = 0; |
698d78e5 | 545 | rarp_request(); |
2d966958 | 546 | break; |
bf6cb247 | 547 | #endif |
643d1ab2 | 548 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 549 | case PING: |
a36b12f9 | 550 | ping_start(); |
73a8b27c | 551 | break; |
cbd8a35c | 552 | #endif |
eeb0a2c6 VM |
553 | #if defined(CONFIG_CMD_PING6) |
554 | case PING6: | |
555 | ping6_start(); | |
556 | break; | |
557 | #endif | |
a6ab4b54 | 558 | #if defined(CONFIG_CMD_NFS) && !defined(CONFIG_SPL_BUILD) |
cbd8a35c | 559 | case NFS: |
68c76a3a | 560 | nfs_start(); |
cbd8a35c | 561 | break; |
a3d991bd | 562 | #endif |
cfbae482 YCLP |
563 | #if defined(CONFIG_CMD_WGET) |
564 | case WGET: | |
565 | wget_start(); | |
566 | break; | |
567 | #endif | |
643d1ab2 | 568 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 569 | case CDP: |
6aede5b7 | 570 | cdp_start(); |
a3d991bd | 571 | break; |
68ceb29e | 572 | #endif |
66c89ee3 | 573 | #if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) |
68ceb29e | 574 | case NETCONS: |
6a38a5f3 | 575 | nc_start(); |
68ceb29e | 576 | break; |
ea287deb | 577 | #endif |
1a32bf41 RG |
578 | #if defined(CONFIG_CMD_DNS) |
579 | case DNS: | |
786eac5f | 580 | dns_start(); |
1a32bf41 | 581 | break; |
d22c338e JH |
582 | #endif |
583 | #if defined(CONFIG_CMD_LINK_LOCAL) | |
584 | case LINKLOCAL: | |
585 | link_local_start(); | |
586 | break; | |
d8970dae LF |
587 | #endif |
588 | #if defined(CONFIG_CMD_WOL) | |
589 | case WOL: | |
590 | wol_start(); | |
591 | break; | |
09bd3d0b SMJ |
592 | #endif |
593 | #if defined(CONFIG_PHY_NCSI) | |
594 | case NCSI: | |
595 | ncsi_probe_packages(); | |
596 | break; | |
73a8b27c | 597 | #endif |
6de98b60 EM |
598 | case RS: |
599 | if (IS_ENABLED(CONFIG_IPV6_ROUTER_DISCOVERY)) | |
600 | ip6_send_rs(); | |
601 | break; | |
2d966958 WD |
602 | default: |
603 | break; | |
604 | } | |
605 | ||
b43ea1bf PR |
606 | if (IS_ENABLED(CONFIG_PROT_UDP) && protocol == UDP) |
607 | udp_start(); | |
608 | ||
2d966958 WD |
609 | break; |
610 | } | |
611 | ||
643d1ab2 | 612 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
3e38e429 | 613 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
2d8d190c UM |
614 | defined(CONFIG_LED_STATUS) && \ |
615 | defined(CONFIG_LED_STATUS_RED) | |
fc3e2165 | 616 | /* |
42d1f039 | 617 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 618 | */ |
d3c65b01 | 619 | if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) |
2d8d190c | 620 | status_led_set(CONFIG_LED_STATUS_RED, CONFIG_LED_STATUS_OFF); |
d3c65b01 | 621 | else |
2d8d190c | 622 | status_led_set(CONFIG_LED_STATUS_RED, CONFIG_LED_STATUS_ON); |
6d0f6bcf | 623 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 624 | #endif /* CONFIG_MII, ... */ |
b63056d6 JL |
625 | #ifdef CONFIG_USB_KEYBOARD |
626 | net_busy_flag = 1; | |
627 | #endif | |
2d966958 WD |
628 | |
629 | /* | |
630 | * Main packet reception loop. Loop receiving packets until | |
22f6e99d | 631 | * someone sets `net_state' to a state that terminates. |
2d966958 WD |
632 | */ |
633 | for (;;) { | |
29caf930 | 634 | schedule(); |
c5a75339 JH |
635 | if (arp_timeout_check() > 0) |
636 | time_start = get_timer(0); | |
637 | ||
ffdbf3ba VM |
638 | if (IS_ENABLED(CONFIG_IPV6)) { |
639 | if (use_ip6 && (ndisc_timeout_check() > 0)) | |
640 | time_start = get_timer(0); | |
641 | } | |
642 | ||
2d966958 WD |
643 | /* |
644 | * Check the ethernet for a new packet. The ethernet | |
645 | * receive routine will process it. | |
60304592 JH |
646 | * Most drivers return the most recent packet size, but not |
647 | * errors that may have happened. | |
2d966958 | 648 | */ |
40cb90ee | 649 | eth_rx(); |
2d966958 WD |
650 | |
651 | /* | |
652 | * Abort if ctrl-c was pressed. | |
653 | */ | |
654 | if (ctrlc()) { | |
e94070c4 | 655 | /* cancel any ARP that may not have completed */ |
049a95a7 | 656 | net_arp_wait_packet_ip.s_addr = 0; |
e94070c4 | 657 | |
ece223b5 | 658 | net_cleanup_loop(); |
8bde7f77 | 659 | eth_halt(); |
f8be7d65 JH |
660 | /* Invalidate the last protocol */ |
661 | eth_set_last_protocol(BOOTP); | |
662 | ||
4f63acd0 | 663 | puts("\nAbort\n"); |
4ef8d53c JH |
664 | /* include a debug print as well incase the debug |
665 | messages are directed to stderr */ | |
bc0571fc | 666 | debug_cond(DEBUG_INT_STATE, "--- net_loop Abort!\n"); |
19a4fbaa | 667 | ret = -EINTR; |
4793ee65 | 668 | goto done; |
2d966958 WD |
669 | } |
670 | ||
2d966958 WD |
671 | /* |
672 | * Check for a timeout, and run the timeout handler | |
673 | * if we have one. | |
674 | */ | |
bc0571fc JH |
675 | if (time_handler && |
676 | ((get_timer(0) - time_start) > time_delta)) { | |
2d966958 WD |
677 | thand_f *x; |
678 | ||
643d1ab2 | 679 | #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) |
4f63acd0 | 680 | #if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \ |
2d8d190c UM |
681 | defined(CONFIG_LED_STATUS) && \ |
682 | defined(CONFIG_LED_STATUS_RED) | |
fc3e2165 | 683 | /* |
42d1f039 | 684 | * Echo the inverted link state to the fault LED. |
fc3e2165 | 685 | */ |
4f63acd0 | 686 | if (miiphy_link(eth_get_dev()->name, |
bc0571fc | 687 | CONFIG_SYS_FAULT_MII_ADDR)) |
2d8d190c UM |
688 | status_led_set(CONFIG_LED_STATUS_RED, |
689 | CONFIG_LED_STATUS_OFF); | |
bc0571fc | 690 | else |
2d8d190c UM |
691 | status_led_set(CONFIG_LED_STATUS_RED, |
692 | CONFIG_LED_STATUS_ON); | |
4f63acd0 | 693 | #endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */ |
fc3e2165 | 694 | #endif /* CONFIG_MII, ... */ |
bc0571fc JH |
695 | debug_cond(DEBUG_INT_STATE, "--- net_loop timeout\n"); |
696 | x = time_handler; | |
697 | time_handler = (thand_f *)0; | |
2d966958 | 698 | (*x)(); |
6de98b60 EM |
699 | } else if (IS_ENABLED(CONFIG_IPV6_ROUTER_DISCOVERY)) |
700 | if (time_handler && protocol == RS) | |
701 | if (!ip6_is_unspecified_addr(&net_gateway6) && | |
702 | net_prefix_length != 0) { | |
703 | net_set_state(NETLOOP_SUCCESS); | |
704 | net_set_timeout_handler(0, NULL); | |
705 | } | |
2d966958 | 706 | |
5c421331 | 707 | if (net_state == NETLOOP_FAIL) |
bc0571fc | 708 | ret = net_start_again(); |
2d966958 | 709 | |
22f6e99d | 710 | switch (net_state) { |
2d966958 | 711 | case NETLOOP_RESTART: |
bc0571fc | 712 | net_restarted = 1; |
2d966958 WD |
713 | goto restart; |
714 | ||
715 | case NETLOOP_SUCCESS: | |
ece223b5 | 716 | net_cleanup_loop(); |
1411157d | 717 | if (net_boot_file_size > 0) { |
8f911a7b | 718 | printf("Bytes transferred = %u (%x hex)\n", |
1411157d | 719 | net_boot_file_size, net_boot_file_size); |
018f5303 | 720 | env_set_hex("filesize", net_boot_file_size); |
bb872dd9 | 721 | env_set_hex("fileaddr", image_load_addr); |
2d966958 | 722 | } |
09bd3d0b | 723 | if (protocol != NETCONS && protocol != NCSI) |
f8be7d65 JH |
724 | eth_halt(); |
725 | else | |
726 | eth_halt_state_only(); | |
727 | ||
728 | eth_set_last_protocol(protocol); | |
729 | ||
1411157d | 730 | ret = net_boot_file_size; |
bc0571fc | 731 | debug_cond(DEBUG_INT_STATE, "--- net_loop Success!\n"); |
4793ee65 | 732 | goto done; |
2d966958 WD |
733 | |
734 | case NETLOOP_FAIL: | |
ece223b5 | 735 | net_cleanup_loop(); |
f8be7d65 JH |
736 | /* Invalidate the last protocol */ |
737 | eth_set_last_protocol(BOOTP); | |
bc0571fc | 738 | debug_cond(DEBUG_INT_STATE, "--- net_loop Fail!\n"); |
a735e6e9 | 739 | ret = -ENONET; |
4793ee65 | 740 | goto done; |
22f6e99d JH |
741 | |
742 | case NETLOOP_CONTINUE: | |
743 | continue; | |
2d966958 WD |
744 | } |
745 | } | |
4793ee65 SG |
746 | |
747 | done: | |
b63056d6 JL |
748 | #ifdef CONFIG_USB_KEYBOARD |
749 | net_busy_flag = 0; | |
750 | #endif | |
39bccd21 | 751 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 | 752 | /* Clear out the handlers */ |
ece223b5 | 753 | net_set_udp_handler(NULL); |
4793ee65 | 754 | net_set_icmp_handler(NULL); |
39bccd21 | 755 | #endif |
60177b26 | 756 | net_set_state(prev_net_state); |
3eaac630 RF |
757 | |
758 | #if defined(CONFIG_CMD_PCAP) | |
759 | if (pcap_active()) | |
760 | pcap_print_status(); | |
761 | #endif | |
4793ee65 | 762 | return ret; |
2d966958 WD |
763 | } |
764 | ||
765 | /**********************************************************************/ | |
766 | ||
bc0571fc | 767 | static void start_again_timeout_handler(void) |
2d966958 | 768 | { |
22f6e99d | 769 | net_set_state(NETLOOP_RESTART); |
2d966958 WD |
770 | } |
771 | ||
bc0571fc | 772 | int net_start_again(void) |
2d966958 | 773 | { |
6e592385 | 774 | char *nretry; |
67b96e87 RB |
775 | int retry_forever = 0; |
776 | unsigned long retrycnt = 0; | |
60304592 | 777 | int ret; |
67b96e87 | 778 | |
00caae6d | 779 | nretry = env_get("netretry"); |
67b96e87 RB |
780 | if (nretry) { |
781 | if (!strcmp(nretry, "yes")) | |
782 | retry_forever = 1; | |
783 | else if (!strcmp(nretry, "no")) | |
784 | retrycnt = 0; | |
785 | else if (!strcmp(nretry, "once")) | |
786 | retrycnt = 1; | |
787 | else | |
788 | retrycnt = simple_strtoul(nretry, NULL, 0); | |
5c421331 JH |
789 | } else { |
790 | retrycnt = 0; | |
791 | retry_forever = 0; | |
792 | } | |
67b96e87 | 793 | |
17d413b2 | 794 | if ((!retry_forever) && (net_try_count > retrycnt)) { |
67b96e87 | 795 | eth_halt(); |
22f6e99d | 796 | net_set_state(NETLOOP_FAIL); |
60304592 JH |
797 | /* |
798 | * We don't provide a way for the protocol to return an error, | |
799 | * but this is almost always the reason. | |
800 | */ | |
801 | return -ETIMEDOUT; | |
a3d991bd | 802 | } |
67b96e87 | 803 | |
bc0571fc | 804 | net_try_count++; |
67b96e87 | 805 | |
4f63acd0 | 806 | eth_halt(); |
8b0c5c12 | 807 | #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER) |
bc0571fc | 808 | eth_try_another(!net_restarted); |
8b0c5c12 | 809 | #endif |
60304592 | 810 | ret = eth_init(); |
bc0571fc JH |
811 | if (net_restart_wrap) { |
812 | net_restart_wrap = 0; | |
813 | if (net_dev_exists) { | |
814 | net_set_timeout_handler(10000UL, | |
815 | start_again_timeout_handler); | |
ece223b5 | 816 | net_set_udp_handler(NULL); |
6e592385 | 817 | } else { |
22f6e99d | 818 | net_set_state(NETLOOP_FAIL); |
2d966958 | 819 | } |
6e592385 | 820 | } else { |
22f6e99d | 821 | net_set_state(NETLOOP_RESTART); |
2d966958 | 822 | } |
60304592 | 823 | return ret; |
2d966958 WD |
824 | } |
825 | ||
826 | /**********************************************************************/ | |
827 | /* | |
828 | * Miscelaneous bits. | |
829 | */ | |
830 | ||
ece223b5 | 831 | static void dummy_handler(uchar *pkt, unsigned dport, |
049a95a7 | 832 | struct in_addr sip, unsigned sport, |
ece223b5 | 833 | unsigned len) |
d280d3f4 | 834 | { |
d280d3f4 JH |
835 | } |
836 | ||
ece223b5 JH |
837 | rxhand_f *net_get_udp_handler(void) |
838 | { | |
839 | return udp_packet_handler; | |
840 | } | |
d280d3f4 | 841 | |
ece223b5 JH |
842 | void net_set_udp_handler(rxhand_f *f) |
843 | { | |
bc0571fc | 844 | debug_cond(DEBUG_INT_STATE, "--- net_loop UDP handler set (%p)\n", f); |
ece223b5 JH |
845 | if (f == NULL) |
846 | udp_packet_handler = dummy_handler; | |
847 | else | |
848 | udp_packet_handler = f; | |
849 | } | |
850 | ||
851 | rxhand_f *net_get_arp_handler(void) | |
2d966958 | 852 | { |
ece223b5 JH |
853 | return arp_packet_handler; |
854 | } | |
855 | ||
856 | void net_set_arp_handler(rxhand_f *f) | |
857 | { | |
bc0571fc | 858 | debug_cond(DEBUG_INT_STATE, "--- net_loop ARP handler set (%p)\n", f); |
ece223b5 JH |
859 | if (f == NULL) |
860 | arp_packet_handler = dummy_handler; | |
861 | else | |
862 | arp_packet_handler = f; | |
2d966958 WD |
863 | } |
864 | ||
39bccd21 | 865 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
866 | void net_set_icmp_handler(rxhand_icmp_f *f) |
867 | { | |
868 | packet_icmp_handler = f; | |
869 | } | |
39bccd21 | 870 | #endif |
2d966958 | 871 | |
bc0571fc | 872 | void net_set_timeout_handler(ulong iv, thand_f *f) |
2d966958 WD |
873 | { |
874 | if (iv == 0) { | |
4ef8d53c | 875 | debug_cond(DEBUG_INT_STATE, |
bc0571fc JH |
876 | "--- net_loop timeout handler cancelled\n"); |
877 | time_handler = (thand_f *)0; | |
2d966958 | 878 | } else { |
4ef8d53c | 879 | debug_cond(DEBUG_INT_STATE, |
bc0571fc JH |
880 | "--- net_loop timeout handler set (%p)\n", f); |
881 | time_handler = f; | |
882 | time_start = get_timer(0); | |
883 | time_delta = iv * CONFIG_SYS_HZ / 1000; | |
2d966958 WD |
884 | } |
885 | } | |
886 | ||
ac3f26cc JH |
887 | uchar *net_get_async_tx_pkt_buf(void) |
888 | { | |
889 | if (arp_is_waiting()) | |
890 | return arp_tx_packet; /* If we are waiting, we already sent */ | |
891 | else | |
892 | return net_tx_packet; | |
893 | } | |
894 | ||
1203fcce | 895 | int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport, |
206d07fd | 896 | int payload_len) |
5d457ecb DH |
897 | { |
898 | return net_send_ip_packet(ether, dest, dport, sport, payload_len, | |
899 | IPPROTO_UDP, 0, 0, 0); | |
900 | } | |
901 | ||
a3bf193b YCLP |
902 | #if defined(CONFIG_PROT_TCP) |
903 | int net_send_tcp_packet(int payload_len, int dport, int sport, u8 action, | |
904 | u32 tcp_seq_num, u32 tcp_ack_num) | |
905 | { | |
906 | return net_send_ip_packet(net_server_ethaddr, net_server_ip, dport, | |
907 | sport, payload_len, IPPROTO_TCP, action, | |
908 | tcp_seq_num, tcp_ack_num); | |
909 | } | |
910 | #endif | |
911 | ||
5d457ecb DH |
912 | int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport, |
913 | int payload_len, int proto, u8 action, u32 tcp_seq_num, | |
914 | u32 tcp_ack_num) | |
73a8b27c | 915 | { |
a3d991bd | 916 | uchar *pkt; |
9214637a JH |
917 | int eth_hdr_size; |
918 | int pkt_hdr_size; | |
a3d991bd | 919 | |
bc0571fc | 920 | /* make sure the net_tx_packet is initialized (net_init() was called) */ |
1203fcce JH |
921 | assert(net_tx_packet != NULL); |
922 | if (net_tx_packet == NULL) | |
46c495d5 JH |
923 | return -1; |
924 | ||
73a8b27c | 925 | /* convert to new style broadcast */ |
049a95a7 JH |
926 | if (dest.s_addr == 0) |
927 | dest.s_addr = 0xFFFFFFFF; | |
73a8b27c WD |
928 | |
929 | /* if broadcast, make the ether address a broadcast and don't do ARP */ | |
049a95a7 | 930 | if (dest.s_addr == 0xFFFFFFFF) |
0adb5b76 | 931 | ether = (uchar *)net_bcast_ethaddr; |
73a8b27c | 932 | |
1203fcce | 933 | pkt = (uchar *)net_tx_packet; |
9214637a | 934 | |
1203fcce | 935 | eth_hdr_size = net_set_ether(pkt, ether, PROT_IP); |
5d457ecb DH |
936 | |
937 | switch (proto) { | |
938 | case IPPROTO_UDP: | |
939 | net_set_udp_header(pkt + eth_hdr_size, dest, dport, sport, | |
940 | payload_len); | |
941 | pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE; | |
942 | break; | |
a3bf193b YCLP |
943 | #if defined(CONFIG_PROT_TCP) |
944 | case IPPROTO_TCP: | |
945 | pkt_hdr_size = eth_hdr_size | |
946 | + tcp_set_tcp_header(pkt + eth_hdr_size, dport, sport, | |
947 | payload_len, action, tcp_seq_num, | |
948 | tcp_ack_num); | |
949 | break; | |
950 | #endif | |
5d457ecb DH |
951 | default: |
952 | return -EINVAL; | |
953 | } | |
73a8b27c | 954 | |
e94070c4 | 955 | /* if MAC address was not discovered yet, do an ARP request */ |
0adb5b76 | 956 | if (memcmp(ether, net_null_ethaddr, 6) == 0) { |
4ef8d53c | 957 | debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest); |
0ebf04c6 | 958 | |
9214637a | 959 | /* save the ip and eth addr for the packet to send after arp */ |
049a95a7 | 960 | net_arp_wait_packet_ip = dest; |
85d25e0e | 961 | arp_wait_packet_ethaddr = ether; |
a3d991bd | 962 | |
73a8b27c | 963 | /* size of the waiting packet */ |
85d25e0e | 964 | arp_wait_tx_packet_size = pkt_hdr_size + payload_len; |
73a8b27c WD |
965 | |
966 | /* and do the ARP request */ | |
85d25e0e JH |
967 | arp_wait_try = 1; |
968 | arp_wait_timer_start = get_timer(0); | |
969 | arp_request(); | |
73a8b27c | 970 | return 1; /* waiting */ |
9214637a | 971 | } else { |
4ef8d53c | 972 | debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n", |
bc0571fc | 973 | &dest, ether); |
1203fcce | 974 | net_send_packet(net_tx_packet, pkt_hdr_size + payload_len); |
9214637a | 975 | return 0; /* transmitted */ |
73a8b27c | 976 | } |
73a8b27c WD |
977 | } |
978 | ||
5cfaa4e5 AR |
979 | #ifdef CONFIG_IP_DEFRAG |
980 | /* | |
981 | * This function collects fragments in a single packet, according | |
982 | * to the algorithm in RFC815. It returns NULL or the pointer to | |
983 | * a complete packet, in static storage | |
984 | */ | |
aa7a6487 | 985 | #define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG) |
5cfaa4e5 | 986 | |
c5c59df0 | 987 | #define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE) |
5cfaa4e5 AR |
988 | |
989 | /* | |
990 | * this is the packet being assembled, either data or frag control. | |
991 | * Fragments go by 8 bytes, so this union must be 8 bytes long | |
992 | */ | |
993 | struct hole { | |
994 | /* first_byte is address of this structure */ | |
995 | u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */ | |
996 | u16 next_hole; /* index of next (in 8-b blocks), 0 == none */ | |
997 | u16 prev_hole; /* index of prev, 0 == none */ | |
998 | u16 unused; | |
999 | }; | |
1000 | ||
bc0571fc | 1001 | static struct ip_udp_hdr *__net_defragment(struct ip_udp_hdr *ip, int *lenp) |
5cfaa4e5 | 1002 | { |
48522bb5 | 1003 | static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN); |
5cfaa4e5 AR |
1004 | static u16 first_hole, total_len; |
1005 | struct hole *payload, *thisfrag, *h, *newh; | |
594c26f8 | 1006 | struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff; |
5cfaa4e5 AR |
1007 | uchar *indata = (uchar *)ip; |
1008 | int offset8, start, len, done = 0; | |
1009 | u16 ip_off = ntohs(ip->ip_off); | |
1010 | ||
1817c382 RV |
1011 | /* |
1012 | * Calling code already rejected <, but we don't have to deal | |
1013 | * with an IP fragment with no payload. | |
1014 | */ | |
1015 | if (ntohs(ip->ip_len) <= IP_HDR_SIZE) | |
b85d130e FE |
1016 | return NULL; |
1017 | ||
5cfaa4e5 | 1018 | /* payload starts after IP header, this fragment is in there */ |
c5c59df0 | 1019 | payload = (struct hole *)(pkt_buff + IP_HDR_SIZE); |
5cfaa4e5 AR |
1020 | offset8 = (ip_off & IP_OFFS); |
1021 | thisfrag = payload + offset8; | |
1022 | start = offset8 * 8; | |
c5c59df0 | 1023 | len = ntohs(ip->ip_len) - IP_HDR_SIZE; |
5cfaa4e5 | 1024 | |
1817c382 RV |
1025 | /* All but last fragment must have a multiple-of-8 payload. */ |
1026 | if ((len & 7) && (ip_off & IP_FLAGS_MFRAG)) | |
1027 | return NULL; | |
1028 | ||
5cfaa4e5 AR |
1029 | if (start + len > IP_MAXUDP) /* fragment extends too far */ |
1030 | return NULL; | |
1031 | ||
1032 | if (!total_len || localip->ip_id != ip->ip_id) { | |
1033 | /* new (or different) packet, reset structs */ | |
1034 | total_len = 0xffff; | |
1035 | payload[0].last_byte = ~0; | |
1036 | payload[0].next_hole = 0; | |
1037 | payload[0].prev_hole = 0; | |
1038 | first_hole = 0; | |
1039 | /* any IP header will work, copy the first we received */ | |
c5c59df0 | 1040 | memcpy(localip, ip, IP_HDR_SIZE); |
5cfaa4e5 AR |
1041 | } |
1042 | ||
1043 | /* | |
1044 | * What follows is the reassembly algorithm. We use the payload | |
1045 | * array as a linked list of hole descriptors, as each hole starts | |
1046 | * at a multiple of 8 bytes. However, last byte can be whatever value, | |
1047 | * so it is represented as byte count, not as 8-byte blocks. | |
1048 | */ | |
1049 | ||
1050 | h = payload + first_hole; | |
1051 | while (h->last_byte < start) { | |
1052 | if (!h->next_hole) { | |
1053 | /* no hole that far away */ | |
1054 | return NULL; | |
1055 | } | |
1056 | h = payload + h->next_hole; | |
1057 | } | |
1058 | ||
e397e59e FS |
1059 | /* last fragment may be 1..7 bytes, the "+7" forces acceptance */ |
1060 | if (offset8 + ((len + 7) / 8) <= h - payload) { | |
5cfaa4e5 AR |
1061 | /* no overlap with holes (dup fragment?) */ |
1062 | return NULL; | |
1063 | } | |
1064 | ||
1065 | if (!(ip_off & IP_FLAGS_MFRAG)) { | |
1066 | /* no more fragmentss: truncate this (last) hole */ | |
1067 | total_len = start + len; | |
1068 | h->last_byte = start + len; | |
1069 | } | |
1070 | ||
1071 | /* | |
06869686 RV |
1072 | * There is some overlap: fix the hole list. This code deals |
1073 | * with a fragment that overlaps with two different holes | |
1074 | * (thus being a superset of a previously-received fragment) | |
1075 | * by only using the part of the fragment that fits in the | |
1076 | * first hole. | |
5cfaa4e5 | 1077 | */ |
06869686 RV |
1078 | if (h->last_byte < start + len) |
1079 | len = h->last_byte - start; | |
5cfaa4e5 | 1080 | |
4f63acd0 | 1081 | if ((h >= thisfrag) && (h->last_byte <= start + len)) { |
5cfaa4e5 AR |
1082 | /* complete overlap with hole: remove hole */ |
1083 | if (!h->prev_hole && !h->next_hole) { | |
1084 | /* last remaining hole */ | |
1085 | done = 1; | |
1086 | } else if (!h->prev_hole) { | |
1087 | /* first hole */ | |
1088 | first_hole = h->next_hole; | |
1089 | payload[h->next_hole].prev_hole = 0; | |
1090 | } else if (!h->next_hole) { | |
1091 | /* last hole */ | |
1092 | payload[h->prev_hole].next_hole = 0; | |
1093 | } else { | |
1094 | /* in the middle of the list */ | |
1095 | payload[h->next_hole].prev_hole = h->prev_hole; | |
1096 | payload[h->prev_hole].next_hole = h->next_hole; | |
1097 | } | |
1098 | ||
1099 | } else if (h->last_byte <= start + len) { | |
1100 | /* overlaps with final part of the hole: shorten this hole */ | |
1101 | h->last_byte = start; | |
1102 | ||
1103 | } else if (h >= thisfrag) { | |
1104 | /* overlaps with initial part of the hole: move this hole */ | |
1105 | newh = thisfrag + (len / 8); | |
1106 | *newh = *h; | |
1107 | h = newh; | |
1108 | if (h->next_hole) | |
1109 | payload[h->next_hole].prev_hole = (h - payload); | |
1110 | if (h->prev_hole) | |
1111 | payload[h->prev_hole].next_hole = (h - payload); | |
1112 | else | |
1113 | first_hole = (h - payload); | |
1114 | ||
1115 | } else { | |
1116 | /* fragment sits in the middle: split the hole */ | |
1117 | newh = thisfrag + (len / 8); | |
1118 | *newh = *h; | |
1119 | h->last_byte = start; | |
1120 | h->next_hole = (newh - payload); | |
1121 | newh->prev_hole = (h - payload); | |
1122 | if (newh->next_hole) | |
1123 | payload[newh->next_hole].prev_hole = (newh - payload); | |
1124 | } | |
1125 | ||
1126 | /* finally copy this fragment and possibly return whole packet */ | |
c5c59df0 | 1127 | memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len); |
5cfaa4e5 AR |
1128 | if (!done) |
1129 | return NULL; | |
1130 | ||
c5c59df0 | 1131 | *lenp = total_len + IP_HDR_SIZE; |
06653c70 | 1132 | localip->ip_len = htons(*lenp); |
5cfaa4e5 AR |
1133 | return localip; |
1134 | } | |
1135 | ||
bc0571fc JH |
1136 | static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip, |
1137 | int *lenp) | |
5cfaa4e5 AR |
1138 | { |
1139 | u16 ip_off = ntohs(ip->ip_off); | |
1140 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
1141 | return ip; /* not a fragment */ | |
bc0571fc | 1142 | return __net_defragment(ip, lenp); |
5cfaa4e5 AR |
1143 | } |
1144 | ||
1145 | #else /* !CONFIG_IP_DEFRAG */ | |
1146 | ||
bc0571fc JH |
1147 | static inline struct ip_udp_hdr *net_defragment(struct ip_udp_hdr *ip, |
1148 | int *lenp) | |
5cfaa4e5 AR |
1149 | { |
1150 | u16 ip_off = ntohs(ip->ip_off); | |
1151 | if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG))) | |
1152 | return ip; /* not a fragment */ | |
1153 | return NULL; | |
1154 | } | |
1155 | #endif | |
a3d991bd | 1156 | |
8f79bb17 SG |
1157 | /** |
1158 | * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently | |
1159 | * drop others. | |
1160 | * | |
1161 | * @parma ip IP packet containing the ICMP | |
1162 | */ | |
594c26f8 | 1163 | static void receive_icmp(struct ip_udp_hdr *ip, int len, |
049a95a7 | 1164 | struct in_addr src_ip, struct ethernet_hdr *et) |
8f79bb17 | 1165 | { |
e0a63079 | 1166 | struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src; |
8f79bb17 SG |
1167 | |
1168 | switch (icmph->type) { | |
1169 | case ICMP_REDIRECT: | |
1170 | if (icmph->code != ICMP_REDIR_HOST) | |
1171 | return; | |
1172 | printf(" ICMP Host Redirect to %pI4 ", | |
bc0571fc | 1173 | &icmph->un.gateway); |
8f79bb17 | 1174 | break; |
a36b12f9 | 1175 | default: |
8f79bb17 | 1176 | #if defined(CONFIG_CMD_PING) |
a36b12f9 | 1177 | ping_receive(et, ip, len); |
8f79bb17 | 1178 | #endif |
39bccd21 | 1179 | #ifdef CONFIG_CMD_TFTPPUT |
4793ee65 SG |
1180 | if (packet_icmp_handler) |
1181 | packet_icmp_handler(icmph->type, icmph->code, | |
bc0571fc JH |
1182 | ntohs(ip->udp_dst), src_ip, |
1183 | ntohs(ip->udp_src), icmph->un.data, | |
1184 | ntohs(ip->udp_len)); | |
39bccd21 | 1185 | #endif |
8f79bb17 SG |
1186 | break; |
1187 | } | |
1188 | } | |
1189 | ||
2a504df0 | 1190 | void net_process_received_packet(uchar *in_packet, int len) |
2d966958 | 1191 | { |
cb487f56 | 1192 | struct ethernet_hdr *et; |
594c26f8 | 1193 | struct ip_udp_hdr *ip; |
049a95a7 JH |
1194 | struct in_addr dst_ip; |
1195 | struct in_addr src_ip; | |
8d353eb8 | 1196 | int eth_proto; |
643d1ab2 | 1197 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1198 | int iscdp; |
1199 | #endif | |
1200 | ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid; | |
1201 | ||
4ef8d53c | 1202 | debug_cond(DEBUG_NET_PKT, "packet received\n"); |
798962ce SA |
1203 | if (DEBUG_NET_PKT_TRACE) |
1204 | print_hex_dump_bytes("rx: ", DUMP_PREFIX_OFFSET, in_packet, | |
1205 | len); | |
2d966958 | 1206 | |
3eaac630 RF |
1207 | #if defined(CONFIG_CMD_PCAP) |
1208 | pcap_post(in_packet, len, false); | |
1209 | #endif | |
1203fcce JH |
1210 | net_rx_packet = in_packet; |
1211 | net_rx_packet_len = len; | |
2a504df0 | 1212 | et = (struct ethernet_hdr *)in_packet; |
a3d991bd WD |
1213 | |
1214 | /* too small packet? */ | |
1215 | if (len < ETHER_HDR_SIZE) | |
1216 | return; | |
1217 | ||
0efe1bcf | 1218 | #if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER) |
f85b6071 | 1219 | if (push_packet) { |
2a504df0 | 1220 | (*push_packet)(in_packet, len); |
f85b6071 RJ |
1221 | return; |
1222 | } | |
1223 | #endif | |
1224 | ||
643d1ab2 | 1225 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 1226 | /* keep track if packet is CDP */ |
17351883 | 1227 | iscdp = is_cdp_packet(et->et_dest); |
a3d991bd WD |
1228 | #endif |
1229 | ||
4fd5055f | 1230 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1231 | if (myvlanid == (ushort)-1) |
1232 | myvlanid = VLAN_NONE; | |
4fd5055f | 1233 | mynvlanid = ntohs(net_native_vlan); |
a3d991bd WD |
1234 | if (mynvlanid == (ushort)-1) |
1235 | mynvlanid = VLAN_NONE; | |
2d966958 | 1236 | |
8d353eb8 | 1237 | eth_proto = ntohs(et->et_protlen); |
2d966958 | 1238 | |
8d353eb8 | 1239 | if (eth_proto < 1514) { |
cb487f56 | 1240 | struct e802_hdr *et802 = (struct e802_hdr *)et; |
2d966958 | 1241 | /* |
da5ebe2c JH |
1242 | * Got a 802.2 packet. Check the other protocol field. |
1243 | * XXX VLAN over 802.2+SNAP not implemented! | |
2d966958 | 1244 | */ |
8d353eb8 | 1245 | eth_proto = ntohs(et802->et_prot); |
a3d991bd | 1246 | |
2a504df0 | 1247 | ip = (struct ip_udp_hdr *)(in_packet + E802_HDR_SIZE); |
2d966958 | 1248 | len -= E802_HDR_SIZE; |
a3d991bd | 1249 | |
8d353eb8 | 1250 | } else if (eth_proto != PROT_VLAN) { /* normal packet */ |
2a504df0 | 1251 | ip = (struct ip_udp_hdr *)(in_packet + ETHER_HDR_SIZE); |
2d966958 | 1252 | len -= ETHER_HDR_SIZE; |
a3d991bd WD |
1253 | |
1254 | } else { /* VLAN packet */ | |
c68cca35 JH |
1255 | struct vlan_ethernet_hdr *vet = |
1256 | (struct vlan_ethernet_hdr *)et; | |
a3d991bd | 1257 | |
4ef8d53c | 1258 | debug_cond(DEBUG_NET_PKT, "VLAN packet received\n"); |
0ebf04c6 | 1259 | |
a3d991bd WD |
1260 | /* too small packet? */ |
1261 | if (len < VLAN_ETHER_HDR_SIZE) | |
1262 | return; | |
1263 | ||
1264 | /* if no VLAN active */ | |
4fd5055f | 1265 | if ((ntohs(net_our_vlan) & VLAN_IDMASK) == VLAN_NONE |
643d1ab2 | 1266 | #if defined(CONFIG_CMD_CDP) |
a3d991bd WD |
1267 | && iscdp == 0 |
1268 | #endif | |
1269 | ) | |
1270 | return; | |
1271 | ||
1272 | cti = ntohs(vet->vet_tag); | |
1273 | vlanid = cti & VLAN_IDMASK; | |
8d353eb8 | 1274 | eth_proto = ntohs(vet->vet_type); |
a3d991bd | 1275 | |
2a504df0 | 1276 | ip = (struct ip_udp_hdr *)(in_packet + VLAN_ETHER_HDR_SIZE); |
a3d991bd | 1277 | len -= VLAN_ETHER_HDR_SIZE; |
2d966958 WD |
1278 | } |
1279 | ||
4ef8d53c | 1280 | debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto); |
2d966958 | 1281 | |
643d1ab2 | 1282 | #if defined(CONFIG_CMD_CDP) |
a3d991bd | 1283 | if (iscdp) { |
0b4c5ff4 | 1284 | cdp_receive((uchar *)ip, len); |
a3d991bd WD |
1285 | return; |
1286 | } | |
1287 | #endif | |
1288 | ||
1289 | if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) { | |
1290 | if (vlanid == VLAN_NONE) | |
1291 | vlanid = (mynvlanid & VLAN_IDMASK); | |
1292 | /* not matched? */ | |
1293 | if (vlanid != (myvlanid & VLAN_IDMASK)) | |
1294 | return; | |
1295 | } | |
1296 | ||
8d353eb8 | 1297 | switch (eth_proto) { |
2d966958 | 1298 | case PROT_ARP: |
85d25e0e | 1299 | arp_receive(et, ip, len); |
289f932c | 1300 | break; |
2d966958 | 1301 | |
bf6cb247 | 1302 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1303 | case PROT_RARP: |
8b9c5322 | 1304 | rarp_receive(ip, len); |
2d966958 | 1305 | break; |
ffdbf3ba VM |
1306 | #endif |
1307 | #if IS_ENABLED(CONFIG_IPV6) | |
1308 | case PROT_IP6: | |
1309 | net_ip6_handler(et, (struct ip6_hdr *)ip, len); | |
0d6d5a4a | 1310 | break; |
bf6cb247 | 1311 | #endif |
2d966958 | 1312 | case PROT_IP: |
4ef8d53c | 1313 | debug_cond(DEBUG_NET_PKT, "Got IP\n"); |
5cfaa4e5 | 1314 | /* Before we start poking the header, make sure it is there */ |
ad359d89 | 1315 | if (len < IP_HDR_SIZE) { |
594c26f8 | 1316 | debug("len bad %d < %lu\n", len, |
ad359d89 | 1317 | (ulong)IP_HDR_SIZE); |
2d966958 WD |
1318 | return; |
1319 | } | |
5cfaa4e5 | 1320 | /* Check the packet length */ |
2d966958 | 1321 | if (len < ntohs(ip->ip_len)) { |
4ef8d53c | 1322 | debug("len bad %d < %d\n", len, ntohs(ip->ip_len)); |
2d966958 WD |
1323 | return; |
1324 | } | |
1325 | len = ntohs(ip->ip_len); | |
ad359d89 RV |
1326 | if (len < IP_HDR_SIZE) { |
1327 | debug("bad ip->ip_len %d < %d\n", len, (int)IP_HDR_SIZE); | |
1328 | return; | |
1329 | } | |
4ef8d53c | 1330 | debug_cond(DEBUG_NET_PKT, "len=%d, v=%02x\n", |
bc0571fc | 1331 | len, ip->ip_hl_v & 0xff); |
0ebf04c6 | 1332 | |
5cfaa4e5 | 1333 | /* Can't deal with anything except IPv4 */ |
d3c65b01 | 1334 | if ((ip->ip_hl_v & 0xf0) != 0x40) |
2d966958 | 1335 | return; |
5cfaa4e5 | 1336 | /* Can't deal with IP options (headers != 20 bytes) */ |
b0fcc48c | 1337 | if ((ip->ip_hl_v & 0x0f) != 0x05) |
6b52cfe1 | 1338 | return; |
5cfaa4e5 | 1339 | /* Check the Checksum of the header */ |
0da0fcd5 | 1340 | if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) { |
4ef8d53c | 1341 | debug("checksum bad\n"); |
2d966958 WD |
1342 | return; |
1343 | } | |
5cfaa4e5 | 1344 | /* If it is not for us, ignore it */ |
049a95a7 JH |
1345 | dst_ip = net_read_ip(&ip->ip_dst); |
1346 | if (net_ip.s_addr && dst_ip.s_addr != net_ip.s_addr && | |
1347 | dst_ip.s_addr != 0xFFFFFFFF) { | |
c819abee | 1348 | return; |
2d966958 | 1349 | } |
03eb129f | 1350 | /* Read source IP address for later use */ |
049a95a7 | 1351 | src_ip = net_read_ip(&ip->ip_src); |
5cfaa4e5 AR |
1352 | /* |
1353 | * The function returns the unchanged packet if it's not | |
1354 | * a fragment, and either the complete packet or NULL if | |
1355 | * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL) | |
1356 | */ | |
bc0571fc | 1357 | ip = net_defragment(ip, &len); |
ccb9ebef | 1358 | if (!ip) |
5cfaa4e5 | 1359 | return; |
2d966958 WD |
1360 | /* |
1361 | * watch for ICMP host redirects | |
1362 | * | |
8bde7f77 WD |
1363 | * There is no real handler code (yet). We just watch |
1364 | * for ICMP host redirect messages. In case anybody | |
1365 | * sees these messages: please contact me | |
1366 | * (wd@denx.de), or - even better - send me the | |
1367 | * necessary fixes :-) | |
2d966958 | 1368 | * |
8bde7f77 WD |
1369 | * Note: in all cases where I have seen this so far |
1370 | * it was a problem with the router configuration, | |
1371 | * for instance when a router was configured in the | |
1372 | * BOOTP reply, but the TFTP server was on the same | |
1373 | * subnet. So this is probably a warning that your | |
1374 | * configuration might be wrong. But I'm not really | |
1375 | * sure if there aren't any other situations. | |
4793ee65 SG |
1376 | * |
1377 | * Simon Glass <sjg@chromium.org>: We get an ICMP when | |
1378 | * we send a tftp packet to a dead connection, or when | |
1379 | * there is no server at the other end. | |
2d966958 WD |
1380 | */ |
1381 | if (ip->ip_p == IPPROTO_ICMP) { | |
8f79bb17 SG |
1382 | receive_icmp(ip, len, src_ip, et); |
1383 | return; | |
a3bf193b YCLP |
1384 | #if defined(CONFIG_PROT_TCP) |
1385 | } else if (ip->ip_p == IPPROTO_TCP) { | |
1386 | debug_cond(DEBUG_DEV_PKT, | |
1387 | "TCP PH (to=%pI4, from=%pI4, len=%d)\n", | |
1388 | &dst_ip, &src_ip, len); | |
1389 | ||
1390 | rxhand_tcp_f((union tcp_build_pkt *)ip, len); | |
1391 | return; | |
1392 | #endif | |
2d966958 WD |
1393 | } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ |
1394 | return; | |
1395 | } | |
1396 | ||
06653c70 | 1397 | if (ntohs(ip->udp_len) < UDP_HDR_SIZE || ntohs(ip->udp_len) > len - IP_HDR_SIZE) |
fe728806 | 1398 | return; |
1399 | ||
4ef8d53c | 1400 | debug_cond(DEBUG_DEV_PKT, |
bc0571fc JH |
1401 | "received UDP (to=%pI4, from=%pI4, len=%d)\n", |
1402 | &dst_ip, &src_ip, len); | |
4ef8d53c | 1403 | |
4b37fd14 | 1404 | if (IS_ENABLED(CONFIG_UDP_CHECKSUM) && ip->udp_xsum != 0) { |
b2f50807 | 1405 | ulong xsum; |
8524423d | 1406 | u8 *sumptr; |
8534bf9a SR |
1407 | ushort sumlen; |
1408 | ||
1409 | xsum = ip->ip_p; | |
1410 | xsum += (ntohs(ip->udp_len)); | |
049a95a7 JH |
1411 | xsum += (ntohl(ip->ip_src.s_addr) >> 16) & 0x0000ffff; |
1412 | xsum += (ntohl(ip->ip_src.s_addr) >> 0) & 0x0000ffff; | |
1413 | xsum += (ntohl(ip->ip_dst.s_addr) >> 16) & 0x0000ffff; | |
1414 | xsum += (ntohl(ip->ip_dst.s_addr) >> 0) & 0x0000ffff; | |
8534bf9a SR |
1415 | |
1416 | sumlen = ntohs(ip->udp_len); | |
8524423d | 1417 | sumptr = (u8 *)&ip->udp_src; |
8534bf9a SR |
1418 | |
1419 | while (sumlen > 1) { | |
8524423d HS |
1420 | /* inlined ntohs() to avoid alignment errors */ |
1421 | xsum += (sumptr[0] << 8) + sumptr[1]; | |
1422 | sumptr += 2; | |
8534bf9a SR |
1423 | sumlen -= 2; |
1424 | } | |
8524423d HS |
1425 | if (sumlen > 0) |
1426 | xsum += (sumptr[0] << 8) + sumptr[0]; | |
8534bf9a | 1427 | while ((xsum >> 16) != 0) { |
3e38e429 LC |
1428 | xsum = (xsum & 0x0000ffff) + |
1429 | ((xsum >> 16) & 0x0000ffff); | |
8534bf9a SR |
1430 | } |
1431 | if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) { | |
9b55a253 | 1432 | printf(" UDP wrong checksum %08lx %08x\n", |
bc0571fc | 1433 | xsum, ntohs(ip->udp_xsum)); |
8534bf9a SR |
1434 | return; |
1435 | } | |
1436 | } | |
8534bf9a | 1437 | |
66c89ee3 | 1438 | #if defined(CONFIG_NETCONSOLE) && !defined(CONFIG_SPL_BUILD) |
594c26f8 | 1439 | nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE, |
bc0571fc JH |
1440 | src_ip, |
1441 | ntohs(ip->udp_dst), | |
1442 | ntohs(ip->udp_src), | |
1443 | ntohs(ip->udp_len) - UDP_HDR_SIZE); | |
68ceb29e | 1444 | #endif |
2d966958 | 1445 | /* |
bc0571fc | 1446 | * IP header OK. Pass the packet to the current handler. |
2d966958 | 1447 | */ |
ece223b5 | 1448 | (*udp_packet_handler)((uchar *)ip + IP_UDP_HDR_SIZE, |
bc0571fc JH |
1449 | ntohs(ip->udp_dst), |
1450 | src_ip, | |
1451 | ntohs(ip->udp_src), | |
1452 | ntohs(ip->udp_len) - UDP_HDR_SIZE); | |
2d966958 | 1453 | break; |
d8970dae LF |
1454 | #ifdef CONFIG_CMD_WOL |
1455 | case PROT_WOL: | |
1456 | wol_receive(ip, len); | |
1457 | break; | |
09bd3d0b SMJ |
1458 | #endif |
1459 | #ifdef CONFIG_PHY_NCSI | |
1460 | case PROT_NCSI: | |
1461 | ncsi_receive(et, ip, len); | |
1462 | break; | |
d8970dae | 1463 | #endif |
2d966958 WD |
1464 | } |
1465 | } | |
1466 | ||
2d966958 WD |
1467 | /**********************************************************************/ |
1468 | ||
e4bf0c5c | 1469 | static int net_check_prereq(enum proto_t protocol) |
2d966958 WD |
1470 | { |
1471 | switch (protocol) { | |
6e592385 | 1472 | /* Fall through */ |
643d1ab2 | 1473 | #if defined(CONFIG_CMD_PING) |
73a8b27c | 1474 | case PING: |
049a95a7 | 1475 | if (net_ping_ip.s_addr == 0) { |
4f63acd0 | 1476 | puts("*** ERROR: ping address not given\n"); |
92895de9 | 1477 | return 1; |
6e592385 WD |
1478 | } |
1479 | goto common; | |
cbd8a35c | 1480 | #endif |
eeb0a2c6 VM |
1481 | #if defined(CONFIG_CMD_PING6) |
1482 | case PING6: | |
1483 | if (ip6_is_unspecified_addr(&net_ping_ip6)) { | |
1484 | puts("*** ERROR: ping address not given\n"); | |
1485 | return 1; | |
1486 | } | |
1487 | goto common; | |
1488 | #endif | |
1a32bf41 RG |
1489 | #if defined(CONFIG_CMD_DNS) |
1490 | case DNS: | |
049a95a7 | 1491 | if (net_dns_server.s_addr == 0) { |
1a32bf41 RG |
1492 | puts("*** ERROR: DNS server address not given\n"); |
1493 | return 1; | |
1494 | } | |
1495 | goto common; | |
1496 | #endif | |
b43ea1bf PR |
1497 | #if defined(CONFIG_PROT_UDP) |
1498 | case UDP: | |
1499 | if (udp_prereq()) | |
1500 | return 1; | |
1501 | goto common; | |
1502 | #endif | |
1503 | ||
643d1ab2 | 1504 | #if defined(CONFIG_CMD_NFS) |
cbd8a35c | 1505 | case NFS: |
73a8b27c | 1506 | #endif |
bc0571fc | 1507 | /* Fall through */ |
e4bf0c5c | 1508 | case TFTPGET: |
1fb7cd49 | 1509 | case TFTPPUT: |
7fbf230d VM |
1510 | if (IS_ENABLED(CONFIG_IPV6) && use_ip6) { |
1511 | if (!memcmp(&net_server_ip6, &net_null_addr_ip6, | |
1512 | sizeof(struct in6_addr)) && | |
1513 | !strchr(net_boot_file_name, '[')) { | |
1514 | puts("*** ERROR: `serverip6' not set\n"); | |
1515 | return 1; | |
1516 | } | |
1517 | } else if (net_server_ip.s_addr == 0 && !is_serverip_in_cmd()) { | |
4f63acd0 | 1518 | puts("*** ERROR: `serverip' not set\n"); |
92895de9 | 1519 | return 1; |
6e592385 | 1520 | } |
912ece4c | 1521 | #if defined(CONFIG_CMD_PING) || \ |
b43ea1bf | 1522 | defined(CONFIG_CMD_DNS) || defined(CONFIG_PROT_UDP) |
4f63acd0 | 1523 | common: |
73a8b27c | 1524 | #endif |
8b6bbe10 | 1525 | /* Fall through */ |
73a8b27c | 1526 | |
8b6bbe10 | 1527 | case NETCONS: |
443d3191 DM |
1528 | case FASTBOOT_UDP: |
1529 | case FASTBOOT_TCP: | |
7a83af07 | 1530 | case TFTPSRV: |
7fbf230d VM |
1531 | if (IS_ENABLED(CONFIG_IPV6) && use_ip6) { |
1532 | if (!memcmp(&net_link_local_ip6, &net_null_addr_ip6, | |
1533 | sizeof(struct in6_addr))) { | |
1534 | puts("*** ERROR: `ip6addr` not set\n"); | |
1535 | return 1; | |
1536 | } | |
1537 | } else if (net_ip.s_addr == 0) { | |
4f63acd0 | 1538 | puts("*** ERROR: `ipaddr' not set\n"); |
92895de9 | 1539 | return 1; |
6e592385 WD |
1540 | } |
1541 | /* Fall through */ | |
2d966958 | 1542 | |
bf6cb247 | 1543 | #ifdef CONFIG_CMD_RARP |
2d966958 | 1544 | case RARP: |
09bd3d0b SMJ |
1545 | #endif |
1546 | #ifdef CONFIG_PHY_NCSI | |
1547 | case NCSI: | |
bf6cb247 | 1548 | #endif |
2d966958 | 1549 | case BOOTP: |
a3d991bd | 1550 | case CDP: |
bf6cb247 | 1551 | case DHCP: |
d22c338e | 1552 | case LINKLOCAL: |
0adb5b76 | 1553 | if (memcmp(net_ethaddr, "\0\0\0\0\0\0", 6) == 0) { |
4f63acd0 | 1554 | int num = eth_get_dev_index(); |
2d966958 | 1555 | |
6e592385 WD |
1556 | switch (num) { |
1557 | case -1: | |
4f63acd0 | 1558 | puts("*** ERROR: No ethernet found.\n"); |
92895de9 | 1559 | return 1; |
6e592385 | 1560 | case 0: |
4f63acd0 | 1561 | puts("*** ERROR: `ethaddr' not set\n"); |
2d966958 | 1562 | break; |
6e592385 | 1563 | default: |
4f63acd0 | 1564 | printf("*** ERROR: `eth%daddr' not set\n", |
bc0571fc | 1565 | num); |
2d966958 | 1566 | break; |
6e592385 | 1567 | } |
2d966958 | 1568 | |
bc0571fc | 1569 | net_start_again(); |
92895de9 | 1570 | return 2; |
6e592385 WD |
1571 | } |
1572 | /* Fall through */ | |
1573 | default: | |
92895de9 | 1574 | return 0; |
2d966958 | 1575 | } |
92895de9 | 1576 | return 0; /* OK */ |
2d966958 WD |
1577 | } |
1578 | /**********************************************************************/ | |
1579 | ||
a3d991bd | 1580 | int |
1203fcce | 1581 | net_eth_hdr_size(void) |
a3d991bd WD |
1582 | { |
1583 | ushort myvlanid; | |
2d966958 | 1584 | |
4fd5055f | 1585 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1586 | if (myvlanid == (ushort)-1) |
1587 | myvlanid = VLAN_NONE; | |
1588 | ||
3e38e429 LC |
1589 | return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : |
1590 | VLAN_ETHER_HDR_SIZE; | |
a3d991bd WD |
1591 | } |
1592 | ||
1203fcce | 1593 | int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot) |
2d966958 | 1594 | { |
cb487f56 | 1595 | struct ethernet_hdr *et = (struct ethernet_hdr *)xet; |
a3d991bd WD |
1596 | ushort myvlanid; |
1597 | ||
4fd5055f | 1598 | myvlanid = ntohs(net_our_vlan); |
a3d991bd WD |
1599 | if (myvlanid == (ushort)-1) |
1600 | myvlanid = VLAN_NONE; | |
2d966958 | 1601 | |
0adb5b76 JH |
1602 | memcpy(et->et_dest, dest_ethaddr, 6); |
1603 | memcpy(et->et_src, net_ethaddr, 6); | |
a3d991bd | 1604 | if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) { |
c819abee | 1605 | et->et_protlen = htons(prot); |
a3d991bd WD |
1606 | return ETHER_HDR_SIZE; |
1607 | } else { | |
c68cca35 JH |
1608 | struct vlan_ethernet_hdr *vet = |
1609 | (struct vlan_ethernet_hdr *)xet; | |
2d966958 | 1610 | |
a3d991bd WD |
1611 | vet->vet_vlan_type = htons(PROT_VLAN); |
1612 | vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK)); | |
1613 | vet->vet_type = htons(prot); | |
1614 | return VLAN_ETHER_HDR_SIZE; | |
1615 | } | |
1616 | } | |
2d966958 | 1617 | |
e7111015 JH |
1618 | int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot) |
1619 | { | |
1620 | ushort protlen; | |
1621 | ||
1622 | memcpy(et->et_dest, addr, 6); | |
0adb5b76 | 1623 | memcpy(et->et_src, net_ethaddr, 6); |
e7111015 JH |
1624 | protlen = ntohs(et->et_protlen); |
1625 | if (protlen == PROT_VLAN) { | |
1626 | struct vlan_ethernet_hdr *vet = | |
1627 | (struct vlan_ethernet_hdr *)et; | |
1628 | vet->vet_type = htons(prot); | |
1629 | return VLAN_ETHER_HDR_SIZE; | |
1630 | } else if (protlen > 1514) { | |
1631 | et->et_protlen = htons(prot); | |
1632 | return ETHER_HDR_SIZE; | |
1633 | } else { | |
1634 | /* 802.2 + SNAP */ | |
1635 | struct e802_hdr *et802 = (struct e802_hdr *)et; | |
1636 | et802->et_prot = htons(prot); | |
1637 | return E802_HDR_SIZE; | |
1638 | } | |
1639 | } | |
1640 | ||
5d457ecb DH |
1641 | void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source, |
1642 | u16 pkt_len, u8 proto) | |
2d966958 | 1643 | { |
4b11c916 | 1644 | struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt; |
2d966958 WD |
1645 | |
1646 | /* | |
4b11c916 | 1647 | * Construct an IP header. |
2d966958 | 1648 | */ |
3e38e429 LC |
1649 | /* IP_HDR_SIZE / 4 (not including UDP) */ |
1650 | ip->ip_hl_v = 0x45; | |
2d966958 | 1651 | ip->ip_tos = 0; |
5d457ecb DH |
1652 | ip->ip_len = htons(pkt_len); |
1653 | ip->ip_p = proto; | |
bc0571fc | 1654 | ip->ip_id = htons(net_ip_id++); |
e0c07b86 | 1655 | ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ |
2d966958 | 1656 | ip->ip_ttl = 255; |
2d966958 | 1657 | ip->ip_sum = 0; |
3e38e429 | 1658 | /* already in network byte order */ |
049a95a7 | 1659 | net_copy_ip((void *)&ip->ip_src, &source); |
4b11c916 | 1660 | /* already in network byte order */ |
049a95a7 | 1661 | net_copy_ip((void *)&ip->ip_dst, &dest); |
5d457ecb DH |
1662 | |
1663 | ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE); | |
4b11c916 JH |
1664 | } |
1665 | ||
049a95a7 | 1666 | void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport, |
4b11c916 JH |
1667 | int len) |
1668 | { | |
1669 | struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt; | |
1670 | ||
1671 | /* | |
1672 | * If the data is an odd number of bytes, zero the | |
1673 | * byte after the last byte so that the checksum | |
1674 | * will work. | |
1675 | */ | |
1676 | if (len & 1) | |
1677 | pkt[IP_UDP_HDR_SIZE + len] = 0; | |
1678 | ||
5d457ecb DH |
1679 | net_set_ip_header(pkt, dest, net_ip, IP_UDP_HDR_SIZE + len, |
1680 | IPPROTO_UDP); | |
4b11c916 | 1681 | |
2d966958 WD |
1682 | ip->udp_src = htons(sport); |
1683 | ip->udp_dst = htons(dport); | |
594c26f8 | 1684 | ip->udp_len = htons(UDP_HDR_SIZE + len); |
2d966958 | 1685 | ip->udp_xsum = 0; |
2d966958 WD |
1686 | } |
1687 | ||
4f63acd0 | 1688 | void copy_filename(char *dst, const char *src, int size) |
2d966958 | 1689 | { |
16cf145f | 1690 | if (src && *src && (*src == '"')) { |
2d966958 WD |
1691 | ++src; |
1692 | --size; | |
1693 | } | |
1694 | ||
16cf145f | 1695 | while ((--size > 0) && src && *src && (*src != '"')) |
2d966958 | 1696 | *dst++ = *src++; |
2d966958 WD |
1697 | *dst = '\0'; |
1698 | } | |
1699 | ||
3a66fcb7 JH |
1700 | int is_serverip_in_cmd(void) |
1701 | { | |
1702 | return !!strchr(net_boot_file_name, ':'); | |
1703 | } | |
1704 | ||
6ab12830 JH |
1705 | int net_parse_bootfile(struct in_addr *ipaddr, char *filename, int max_len) |
1706 | { | |
1707 | char *colon; | |
85f8e03b LF |
1708 | struct in_addr ip; |
1709 | ip.s_addr = 0; | |
6ab12830 JH |
1710 | |
1711 | if (net_boot_file_name[0] == '\0') | |
1712 | return 0; | |
1713 | ||
1714 | colon = strchr(net_boot_file_name, ':'); | |
1715 | if (colon) { | |
85f8e03b LF |
1716 | ip = string_to_ip(net_boot_file_name); |
1717 | if (ipaddr && ip.s_addr) | |
1718 | *ipaddr = ip; | |
1719 | } | |
1720 | if (ip.s_addr) { | |
6ab12830 JH |
1721 | strncpy(filename, colon + 1, max_len); |
1722 | } else { | |
1723 | strncpy(filename, net_boot_file_name, max_len); | |
1724 | } | |
1725 | filename[max_len - 1] = '\0'; | |
1726 | ||
1727 | return 1; | |
1728 | } | |
1729 | ||
049a95a7 | 1730 | void ip_to_string(struct in_addr x, char *s) |
2d966958 | 1731 | { |
049a95a7 | 1732 | x.s_addr = ntohl(x.s_addr); |
4f63acd0 | 1733 | sprintf(s, "%d.%d.%d.%d", |
049a95a7 JH |
1734 | (int) ((x.s_addr >> 24) & 0xff), |
1735 | (int) ((x.s_addr >> 16) & 0xff), | |
1736 | (int) ((x.s_addr >> 8) & 0xff), | |
1737 | (int) ((x.s_addr >> 0) & 0xff) | |
6e592385 | 1738 | ); |
2d966958 WD |
1739 | } |
1740 | ||
4fd5055f | 1741 | void vlan_to_string(ushort x, char *s) |
a3d991bd WD |
1742 | { |
1743 | x = ntohs(x); | |
1744 | ||
1745 | if (x == (ushort)-1) | |
1746 | x = VLAN_NONE; | |
1747 | ||
1748 | if (x == VLAN_NONE) | |
1749 | strcpy(s, "none"); | |
1750 | else | |
1751 | sprintf(s, "%d", x & VLAN_IDMASK); | |
1752 | } | |
1753 | ||
4fd5055f | 1754 | ushort string_to_vlan(const char *s) |
a3d991bd WD |
1755 | { |
1756 | ushort id; | |
1757 | ||
1758 | if (s == NULL) | |
b9711de1 | 1759 | return htons(VLAN_NONE); |
a3d991bd WD |
1760 | |
1761 | if (*s < '0' || *s > '9') | |
1762 | id = VLAN_NONE; | |
1763 | else | |
0b1284eb | 1764 | id = (ushort)dectoul(s, NULL); |
a3d991bd | 1765 | |
b9711de1 | 1766 | return htons(id); |
a3d991bd WD |
1767 | } |
1768 | ||
723806cc | 1769 | ushort env_get_vlan(char *var) |
a3d991bd | 1770 | { |
00caae6d | 1771 | return string_to_vlan(env_get(var)); |
a3d991bd | 1772 | } |