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Commit | Line | Data |
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3861aa5c WD |
1 | /* |
2 | * Based on LiMon - BOOTP. | |
3 | * | |
4 | * Copyright 1994, 1995, 2000 Neil Russell. | |
5 | * (See License) | |
6 | * Copyright 2000 Roland Borde | |
7 | * Copyright 2000 Paolo Scaffardi | |
232c150a | 8 | * Copyright 2000-2004 Wolfgang Denk, wd@denx.de |
3861aa5c WD |
9 | */ |
10 | ||
3861aa5c WD |
11 | #include <common.h> |
12 | #include <command.h> | |
13 | #include <net.h> | |
34696958 | 14 | #include <net/tftp.h> |
3861aa5c | 15 | #include "bootp.h" |
232c150a | 16 | #include "nfs.h" |
3861aa5c WD |
17 | #ifdef CONFIG_STATUS_LED |
18 | #include <status_led.h> | |
19 | #endif | |
db7720ba KP |
20 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
21 | #include "net_rand.h" | |
22 | #endif | |
3861aa5c | 23 | |
3090b7e3 | 24 | #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */ |
3861aa5c | 25 | |
f59be6e8 SW |
26 | /* |
27 | * The timeout for the initial BOOTP/DHCP request used to be described by a | |
28 | * counter of fixed-length timeout periods. TIMEOUT_COUNT represents | |
29 | * that counter | |
30 | * | |
31 | * Now that the timeout periods are variable (exponential backoff and retry) | |
32 | * we convert the timeout count to the absolute time it would have take to | |
33 | * execute that many retries, and keep sending retry packets until that time | |
34 | * is reached. | |
35 | */ | |
232c150a | 36 | #ifndef CONFIG_NET_RETRY_COUNT |
3090b7e3 | 37 | # define TIMEOUT_COUNT 5 /* # of timeouts before giving up */ |
3861aa5c | 38 | #else |
232c150a | 39 | # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT) |
3861aa5c | 40 | #endif |
f59be6e8 | 41 | #define TIMEOUT_MS ((3 + (TIMEOUT_COUNT * 5)) * 1000) |
3861aa5c | 42 | |
3090b7e3 JH |
43 | #define PORT_BOOTPS 67 /* BOOTP server UDP port */ |
44 | #define PORT_BOOTPC 68 /* BOOTP client UDP port */ | |
3861aa5c | 45 | |
3090b7e3 | 46 | #ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */ |
232c150a | 47 | #define CONFIG_DHCP_MIN_EXT_LEN 64 |
3861aa5c WD |
48 | #endif |
49 | ||
92ac8acc TR |
50 | #ifndef CONFIG_BOOTP_ID_CACHE_SIZE |
51 | #define CONFIG_BOOTP_ID_CACHE_SIZE 4 | |
52 | #endif | |
53 | ||
5917e7d1 | 54 | u32 bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE]; |
92ac8acc | 55 | unsigned int bootp_num_ids; |
7044c6bb | 56 | int bootp_try; |
f59be6e8 SW |
57 | ulong bootp_start; |
58 | ulong bootp_timeout; | |
586cbe51 JH |
59 | char net_nis_domain[32] = {0,}; /* Our NIS domain */ |
60 | char net_hostname[32] = {0,}; /* Our hostname */ | |
61 | char net_root_path[64] = {0,}; /* Our bootpath */ | |
3861aa5c | 62 | |
50768f5b AM |
63 | static ulong time_taken_max; |
64 | ||
643d1ab2 | 65 | #if defined(CONFIG_CMD_DHCP) |
06370590 | 66 | static dhcp_state_t dhcp_state = INIT; |
5917e7d1 | 67 | static u32 dhcp_leasetime; |
049a95a7 | 68 | static struct in_addr dhcp_server_ip; |
ec87b1b3 SB |
69 | static u8 dhcp_option_overload; |
70 | #define OVERLOAD_FILE 1 | |
71 | #define OVERLOAD_SNAME 2 | |
049a95a7 JH |
72 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
73 | unsigned src, unsigned len); | |
3861aa5c WD |
74 | |
75 | /* For Debug */ | |
3e38691e WD |
76 | #if 0 |
77 | static char *dhcpmsg2str(int type) | |
3861aa5c WD |
78 | { |
79 | switch (type) { | |
232c150a WD |
80 | case 1: return "DHCPDISCOVER"; break; |
81 | case 2: return "DHCPOFFER"; break; | |
82 | case 3: return "DHCPREQUEST"; break; | |
83 | case 4: return "DHCPDECLINE"; break; | |
84 | case 5: return "DHCPACK"; break; | |
85 | case 6: return "DHCPNACK"; break; | |
86 | case 7: return "DHCPRELEASE"; break; | |
3861aa5c WD |
87 | default: return "UNKNOWN/INVALID MSG TYPE"; break; |
88 | } | |
89 | } | |
3e38691e | 90 | #endif |
610f2e9c | 91 | #endif |
3861aa5c | 92 | |
92ac8acc TR |
93 | static void bootp_add_id(ulong id) |
94 | { | |
95 | if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) { | |
96 | size_t size = sizeof(bootp_ids) - sizeof(id); | |
97 | ||
98 | memmove(bootp_ids, &bootp_ids[1], size); | |
99 | bootp_ids[bootp_num_ids - 1] = id; | |
100 | } else { | |
101 | bootp_ids[bootp_num_ids] = id; | |
102 | bootp_num_ids++; | |
103 | } | |
104 | } | |
105 | ||
106 | static bool bootp_match_id(ulong id) | |
107 | { | |
108 | unsigned int i; | |
109 | ||
110 | for (i = 0; i < bootp_num_ids; i++) | |
111 | if (bootp_ids[i] == id) | |
112 | return true; | |
113 | ||
114 | return false; | |
115 | } | |
116 | ||
867d6ae2 SB |
117 | static int check_reply_packet(uchar *pkt, unsigned dest, unsigned src, |
118 | unsigned len) | |
3861aa5c | 119 | { |
7044c6bb | 120 | struct bootp_hdr *bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
121 | int retval = 0; |
122 | ||
123 | if (dest != PORT_BOOTPC || src != PORT_BOOTPS) | |
124 | retval = -1; | |
7044c6bb | 125 | else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE) |
3861aa5c | 126 | retval = -2; |
867d6ae2 | 127 | else if (bp->bp_op != OP_BOOTREPLY) |
3861aa5c | 128 | retval = -3; |
3861aa5c WD |
129 | else if (bp->bp_htype != HWT_ETHER) |
130 | retval = -4; | |
131 | else if (bp->bp_hlen != HWL_ETHER) | |
132 | retval = -5; | |
5917e7d1 | 133 | else if (!bootp_match_id(net_read_u32(&bp->bp_id))) |
3861aa5c | 134 | retval = -6; |
214cc905 AP |
135 | else if (memcmp(bp->bp_chaddr, net_ethaddr, HWL_ETHER) != 0) |
136 | retval = -7; | |
3861aa5c | 137 | |
0ebf04c6 | 138 | debug("Filtering pkt = %d\n", retval); |
3861aa5c WD |
139 | |
140 | return retval; | |
141 | } | |
142 | ||
143 | /* | |
144 | * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet | |
145 | */ | |
7044c6bb | 146 | static void store_net_params(struct bootp_hdr *bp) |
3861aa5c | 147 | { |
5d110f0a | 148 | #if !defined(CONFIG_BOOTP_SERVERIP) |
049a95a7 | 149 | struct in_addr tmp_ip; |
1752f0fd | 150 | |
049a95a7 JH |
151 | net_copy_ip(&tmp_ip, &bp->bp_siaddr); |
152 | if (tmp_ip.s_addr != 0) | |
153 | net_copy_ip(&net_server_ip, &bp->bp_siaddr); | |
1203fcce JH |
154 | memcpy(net_server_ethaddr, |
155 | ((struct ethernet_hdr *)net_rx_packet)->et_src, 6); | |
ec87b1b3 SB |
156 | if ( |
157 | #if defined(CONFIG_CMD_DHCP) | |
158 | !(dhcp_option_overload & OVERLOAD_FILE) && | |
159 | #endif | |
160 | (strlen(bp->bp_file) > 0)) { | |
1411157d JH |
161 | copy_filename(net_boot_file_name, bp->bp_file, |
162 | sizeof(net_boot_file_name)); | |
ec87b1b3 | 163 | } |
3861aa5c | 164 | |
1411157d | 165 | debug("net_boot_file_name: %s\n", net_boot_file_name); |
3861aa5c WD |
166 | |
167 | /* Propagate to environment: | |
8bde7f77 | 168 | * don't delete exising entry when BOOTP / DHCP reply does |
3861aa5c WD |
169 | * not contain a new value |
170 | */ | |
1411157d JH |
171 | if (*net_boot_file_name) |
172 | setenv("bootfile", net_boot_file_name); | |
ecec4e9c | 173 | #endif |
049a95a7 | 174 | net_copy_ip(&net_ip, &bp->bp_yiaddr); |
3861aa5c WD |
175 | } |
176 | ||
3090b7e3 | 177 | static int truncate_sz(const char *name, int maxlen, int curlen) |
3861aa5c WD |
178 | { |
179 | if (curlen >= maxlen) { | |
3090b7e3 JH |
180 | printf("*** WARNING: %s is too long (%d - max: %d)" |
181 | " - truncated\n", name, curlen, maxlen); | |
3861aa5c WD |
182 | curlen = maxlen - 1; |
183 | } | |
3090b7e3 | 184 | return curlen; |
3861aa5c WD |
185 | } |
186 | ||
643d1ab2 | 187 | #if !defined(CONFIG_CMD_DHCP) |
3861aa5c | 188 | |
7044c6bb | 189 | static void bootp_process_vendor_field(u8 *ext) |
3861aa5c | 190 | { |
232c150a | 191 | int size = *(ext + 1); |
3861aa5c | 192 | |
0ebf04c6 | 193 | debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, |
7044c6bb | 194 | *(ext + 1)); |
3861aa5c | 195 | |
1411157d | 196 | net_boot_file_expected_size_in_blocks = 0; |
3861aa5c | 197 | |
232c150a WD |
198 | switch (*ext) { |
199 | /* Fixed length fields */ | |
3090b7e3 | 200 | case 1: /* Subnet mask */ |
049a95a7 JH |
201 | if (net_netmask.s_addr == 0) |
202 | net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2)); | |
3861aa5c | 203 | break; |
3090b7e3 | 204 | case 2: /* Time offset - Not yet supported */ |
3861aa5c | 205 | break; |
232c150a | 206 | /* Variable length fields */ |
3090b7e3 | 207 | case 3: /* Gateways list */ |
049a95a7 JH |
208 | if (net_gateway.s_addr == 0) |
209 | net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2)); | |
3861aa5c | 210 | break; |
3090b7e3 | 211 | case 4: /* Time server - Not yet supported */ |
3861aa5c | 212 | break; |
3090b7e3 | 213 | case 5: /* IEN-116 name server - Not yet supported */ |
3861aa5c WD |
214 | break; |
215 | case 6: | |
049a95a7 JH |
216 | if (net_dns_server.s_addr == 0) |
217 | net_copy_ip(&net_dns_server, | |
218 | (struct in_addr *)(ext + 2)); | |
1fe80d79 | 219 | #if defined(CONFIG_BOOTP_DNS2) |
049a95a7 JH |
220 | if ((net_dns_server2.s_addr == 0) && (size > 4)) |
221 | net_copy_ip(&net_dns_server2, | |
222 | (struct in_addr *)(ext + 2 + 4)); | |
fe389a82 | 223 | #endif |
3861aa5c | 224 | break; |
3090b7e3 | 225 | case 7: /* Log server - Not yet supported */ |
3861aa5c | 226 | break; |
3090b7e3 | 227 | case 8: /* Cookie/Quote server - Not yet supported */ |
3861aa5c | 228 | break; |
3090b7e3 | 229 | case 9: /* LPR server - Not yet supported */ |
3861aa5c | 230 | break; |
3090b7e3 | 231 | case 10: /* Impress server - Not yet supported */ |
3861aa5c | 232 | break; |
3090b7e3 | 233 | case 11: /* RPL server - Not yet supported */ |
3861aa5c | 234 | break; |
3090b7e3 | 235 | case 12: /* Host name */ |
586cbe51 | 236 | if (net_hostname[0] == 0) { |
3090b7e3 | 237 | size = truncate_sz("Host Name", |
586cbe51 JH |
238 | sizeof(net_hostname), size); |
239 | memcpy(&net_hostname, ext + 2, size); | |
240 | net_hostname[size] = 0; | |
3861aa5c WD |
241 | } |
242 | break; | |
3090b7e3 | 243 | case 13: /* Boot file size */ |
3861aa5c | 244 | if (size == 2) |
1411157d JH |
245 | net_boot_file_expected_size_in_blocks = |
246 | ntohs(*(ushort *)(ext + 2)); | |
3861aa5c | 247 | else if (size == 4) |
1411157d JH |
248 | net_boot_file_expected_size_in_blocks = |
249 | ntohl(*(ulong *)(ext + 2)); | |
3861aa5c | 250 | break; |
3090b7e3 | 251 | case 14: /* Merit dump file - Not yet supported */ |
3861aa5c | 252 | break; |
3090b7e3 | 253 | case 15: /* Domain name - Not yet supported */ |
3861aa5c | 254 | break; |
3090b7e3 | 255 | case 16: /* Swap server - Not yet supported */ |
3861aa5c | 256 | break; |
3090b7e3 | 257 | case 17: /* Root path */ |
586cbe51 | 258 | if (net_root_path[0] == 0) { |
3090b7e3 | 259 | size = truncate_sz("Root Path", |
586cbe51 JH |
260 | sizeof(net_root_path), size); |
261 | memcpy(&net_root_path, ext + 2, size); | |
262 | net_root_path[size] = 0; | |
3861aa5c WD |
263 | } |
264 | break; | |
3090b7e3 | 265 | case 18: /* Extension path - Not yet supported */ |
3861aa5c | 266 | /* |
8bde7f77 WD |
267 | * This can be used to send the information of the |
268 | * vendor area in another file that the client can | |
269 | * access via TFTP. | |
3861aa5c WD |
270 | */ |
271 | break; | |
232c150a | 272 | /* IP host layer fields */ |
3090b7e3 | 273 | case 40: /* NIS Domain name */ |
586cbe51 | 274 | if (net_nis_domain[0] == 0) { |
3090b7e3 | 275 | size = truncate_sz("NIS Domain Name", |
586cbe51 JH |
276 | sizeof(net_nis_domain), size); |
277 | memcpy(&net_nis_domain, ext + 2, size); | |
278 | net_nis_domain[size] = 0; | |
3861aa5c WD |
279 | } |
280 | break; | |
09e3a67d LP |
281 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
282 | case 42: /* NTP server IP */ | |
049a95a7 | 283 | net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2)); |
09e3a67d LP |
284 | break; |
285 | #endif | |
232c150a | 286 | /* Application layer fields */ |
3090b7e3 | 287 | case 43: /* Vendor specific info - Not yet supported */ |
3861aa5c | 288 | /* |
8bde7f77 WD |
289 | * Binary information to exchange specific |
290 | * product information. | |
3861aa5c WD |
291 | */ |
292 | break; | |
232c150a WD |
293 | /* Reserved (custom) fields (128..254) */ |
294 | } | |
3861aa5c WD |
295 | } |
296 | ||
7044c6bb | 297 | static void bootp_process_vendor(u8 *ext, int size) |
3861aa5c | 298 | { |
232c150a | 299 | u8 *end = ext + size; |
3861aa5c | 300 | |
0ebf04c6 | 301 | debug("[BOOTP] Checking extension (%d bytes)...\n", size); |
3861aa5c | 302 | |
232c150a WD |
303 | while ((ext < end) && (*ext != 0xff)) { |
304 | if (*ext == 0) { | |
305 | ext++; | |
306 | } else { | |
307 | u8 *opt = ext; | |
308 | ||
309 | ext += ext[1] + 2; | |
310 | if (ext <= end) | |
7044c6bb | 311 | bootp_process_vendor_field(opt); |
232c150a | 312 | } |
3861aa5c | 313 | } |
3861aa5c | 314 | |
3090b7e3 | 315 | debug("[BOOTP] Received fields:\n"); |
049a95a7 JH |
316 | if (net_netmask.s_addr) |
317 | debug("net_netmask : %pI4\n", &net_netmask); | |
232c150a | 318 | |
049a95a7 JH |
319 | if (net_gateway.s_addr) |
320 | debug("net_gateway : %pI4", &net_gateway); | |
232c150a | 321 | |
1411157d JH |
322 | if (net_boot_file_expected_size_in_blocks) |
323 | debug("net_boot_file_expected_size_in_blocks : %d\n", | |
324 | net_boot_file_expected_size_in_blocks); | |
3861aa5c | 325 | |
586cbe51 JH |
326 | if (net_hostname[0]) |
327 | debug("net_hostname : %s\n", net_hostname); | |
232c150a | 328 | |
586cbe51 JH |
329 | if (net_root_path[0]) |
330 | debug("net_root_path : %s\n", net_root_path); | |
232c150a | 331 | |
586cbe51 JH |
332 | if (net_nis_domain[0]) |
333 | debug("net_nis_domain : %s\n", net_nis_domain); | |
232c150a | 334 | |
09e3a67d | 335 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
049a95a7 JH |
336 | if (net_ntp_server) |
337 | debug("net_ntp_server : %pI4\n", &net_ntp_server); | |
09e3a67d | 338 | #endif |
232c150a | 339 | } |
09349866 | 340 | |
3861aa5c WD |
341 | /* |
342 | * Handle a BOOTP received packet. | |
343 | */ | |
049a95a7 JH |
344 | static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
345 | unsigned src, unsigned len) | |
3861aa5c | 346 | { |
7044c6bb | 347 | struct bootp_hdr *bp; |
3861aa5c | 348 | |
0ebf04c6 | 349 | debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n", |
7044c6bb | 350 | src, dest, len, sizeof(struct bootp_hdr)); |
3861aa5c | 351 | |
7044c6bb | 352 | bp = (struct bootp_hdr *)pkt; |
3861aa5c | 353 | |
3090b7e3 | 354 | /* Filter out pkts we don't want */ |
867d6ae2 | 355 | if (check_reply_packet(pkt, dest, src, len)) |
3861aa5c WD |
356 | return; |
357 | ||
358 | /* | |
232c150a | 359 | * Got a good BOOTP reply. Copy the data into our variables. |
3861aa5c | 360 | */ |
82953328 | 361 | #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) |
3090b7e3 | 362 | status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); |
3861aa5c WD |
363 | #endif |
364 | ||
7044c6bb | 365 | store_net_params(bp); /* Store net parameters from reply */ |
3861aa5c WD |
366 | |
367 | /* Retrieve extended information (we must parse the vendor area) */ | |
5917e7d1 | 368 | if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) |
7044c6bb | 369 | bootp_process_vendor((uchar *)&bp->bp_vend[4], len); |
3861aa5c | 370 | |
bc0571fc | 371 | net_set_timeout_handler(0, (thand_f *)0); |
573f14fe | 372 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop"); |
3861aa5c | 373 | |
0ebf04c6 | 374 | debug("Got good BOOTP\n"); |
3861aa5c | 375 | |
e4a3d57d | 376 | net_auto_load(); |
3861aa5c | 377 | } |
610f2e9c | 378 | #endif |
3861aa5c WD |
379 | |
380 | /* | |
381 | * Timeout on BOOTP/DHCP request. | |
382 | */ | |
7044c6bb | 383 | static void bootp_timeout_handler(void) |
3861aa5c | 384 | { |
f59be6e8 SW |
385 | ulong time_taken = get_timer(bootp_start); |
386 | ||
50768f5b | 387 | if (time_taken >= time_taken_max) { |
2c00e099 | 388 | #ifdef CONFIG_BOOTP_MAY_FAIL |
f59be6e8 | 389 | puts("\nRetry time exceeded\n"); |
b977aa80 | 390 | net_set_state(NETLOOP_FAIL); |
2c00e099 | 391 | #else |
f59be6e8 | 392 | puts("\nRetry time exceeded; starting again\n"); |
bc0571fc | 393 | net_start_again(); |
2c00e099 | 394 | #endif |
3861aa5c | 395 | } else { |
f59be6e8 | 396 | bootp_timeout *= 2; |
92ac8acc TR |
397 | if (bootp_timeout > 2000) |
398 | bootp_timeout = 2000; | |
bc0571fc | 399 | net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); |
7044c6bb | 400 | bootp_request(); |
3861aa5c WD |
401 | } |
402 | } | |
403 | ||
9ace17c8 IY |
404 | #define put_vci(e, str) \ |
405 | do { \ | |
406 | size_t vci_strlen = strlen(str); \ | |
407 | *e++ = 60; /* Vendor Class Identifier */ \ | |
408 | *e++ = vci_strlen; \ | |
409 | memcpy(e, str, vci_strlen); \ | |
410 | e += vci_strlen; \ | |
411 | } while (0) | |
412 | ||
3861aa5c WD |
413 | /* |
414 | * Initialize BOOTP extension fields in the request. | |
415 | */ | |
643d1ab2 | 416 | #if defined(CONFIG_CMD_DHCP) |
049a95a7 JH |
417 | static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip, |
418 | struct in_addr requested_ip) | |
3861aa5c | 419 | { |
232c150a WD |
420 | u8 *start = e; |
421 | u8 *cnt; | |
d2b5d5c4 JH |
422 | #if defined(CONFIG_BOOTP_PXE) |
423 | char *uuid; | |
d2b5d5c4 JH |
424 | u16 clientarch; |
425 | #endif | |
232c150a | 426 | |
1fe80d79 | 427 | #if defined(CONFIG_BOOTP_VENDOREX) |
232c150a | 428 | u8 *x; |
3861aa5c | 429 | #endif |
1fe80d79 | 430 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
77ddac94 | 431 | char *hostname; |
fe389a82 | 432 | #endif |
3861aa5c | 433 | |
232c150a WD |
434 | *e++ = 99; /* RFC1048 Magic Cookie */ |
435 | *e++ = 130; | |
436 | *e++ = 83; | |
437 | *e++ = 99; | |
3861aa5c | 438 | |
232c150a WD |
439 | *e++ = 53; /* DHCP Message Type */ |
440 | *e++ = 1; | |
441 | *e++ = message_type; | |
3861aa5c | 442 | |
232c150a WD |
443 | *e++ = 57; /* Maximum DHCP Message Size */ |
444 | *e++ = 2; | |
f8315731 JH |
445 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8; |
446 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; | |
3861aa5c | 447 | |
049a95a7 JH |
448 | if (server_ip.s_addr) { |
449 | int tmp = ntohl(server_ip.s_addr); | |
3861aa5c | 450 | |
232c150a WD |
451 | *e++ = 54; /* ServerID */ |
452 | *e++ = 4; | |
453 | *e++ = tmp >> 24; | |
454 | *e++ = tmp >> 16; | |
455 | *e++ = tmp >> 8; | |
456 | *e++ = tmp & 0xff; | |
457 | } | |
3861aa5c | 458 | |
049a95a7 JH |
459 | if (requested_ip.s_addr) { |
460 | int tmp = ntohl(requested_ip.s_addr); | |
3861aa5c | 461 | |
232c150a WD |
462 | *e++ = 50; /* Requested IP */ |
463 | *e++ = 4; | |
464 | *e++ = tmp >> 24; | |
465 | *e++ = tmp >> 16; | |
466 | *e++ = tmp >> 8; | |
467 | *e++ = tmp & 0xff; | |
468 | } | |
1fe80d79 | 469 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
3090b7e3 JH |
470 | hostname = getenv("hostname"); |
471 | if (hostname) { | |
472 | int hostnamelen = strlen(hostname); | |
232c150a WD |
473 | |
474 | *e++ = 12; /* Hostname */ | |
475 | *e++ = hostnamelen; | |
3090b7e3 | 476 | memcpy(e, hostname, hostnamelen); |
232c150a WD |
477 | e += hostnamelen; |
478 | } | |
fe389a82 SR |
479 | #endif |
480 | ||
d2b5d5c4 JH |
481 | #if defined(CONFIG_BOOTP_PXE) |
482 | clientarch = CONFIG_BOOTP_PXE_CLIENTARCH; | |
483 | *e++ = 93; /* Client System Architecture */ | |
484 | *e++ = 2; | |
485 | *e++ = (clientarch >> 8) & 0xff; | |
486 | *e++ = clientarch & 0xff; | |
487 | ||
488 | *e++ = 94; /* Client Network Interface Identifier */ | |
489 | *e++ = 3; | |
490 | *e++ = 1; /* type field for UNDI */ | |
491 | *e++ = 0; /* major revision */ | |
492 | *e++ = 0; /* minor revision */ | |
493 | ||
494 | uuid = getenv("pxeuuid"); | |
495 | ||
496 | if (uuid) { | |
497 | if (uuid_str_valid(uuid)) { | |
498 | *e++ = 97; /* Client Machine Identifier */ | |
499 | *e++ = 17; | |
500 | *e++ = 0; /* type 0 - UUID */ | |
501 | ||
d718ded0 | 502 | uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD); |
d2b5d5c4 JH |
503 | e += 16; |
504 | } else { | |
505 | printf("Invalid pxeuuid: %s\n", uuid); | |
506 | } | |
507 | } | |
9ace17c8 | 508 | #endif |
d2b5d5c4 | 509 | |
214dc1da HP |
510 | #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING) |
511 | put_vci(e, CONFIG_SPL_NET_VCI_STRING); | |
512 | #elif defined(CONFIG_BOOTP_VCI_STRING) | |
9ace17c8 | 513 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
d2b5d5c4 JH |
514 | #endif |
515 | ||
1fe80d79 | 516 | #if defined(CONFIG_BOOTP_VENDOREX) |
3090b7e3 JH |
517 | x = dhcp_vendorex_prep(e); |
518 | if (x) | |
232c150a | 519 | return x - start; |
3861aa5c WD |
520 | #endif |
521 | ||
232c150a WD |
522 | *e++ = 55; /* Parameter Request List */ |
523 | cnt = e++; /* Pointer to count of requested items */ | |
524 | *cnt = 0; | |
1fe80d79 | 525 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
526 | *e++ = 1; /* Subnet Mask */ |
527 | *cnt += 1; | |
3861aa5c | 528 | #endif |
1fe80d79 | 529 | #if defined(CONFIG_BOOTP_TIMEOFFSET) |
ea287deb WD |
530 | *e++ = 2; |
531 | *cnt += 1; | |
532 | #endif | |
1fe80d79 | 533 | #if defined(CONFIG_BOOTP_GATEWAY) |
232c150a WD |
534 | *e++ = 3; /* Router Option */ |
535 | *cnt += 1; | |
3861aa5c | 536 | #endif |
1fe80d79 | 537 | #if defined(CONFIG_BOOTP_DNS) |
232c150a WD |
538 | *e++ = 6; /* DNS Server(s) */ |
539 | *cnt += 1; | |
3861aa5c | 540 | #endif |
1fe80d79 | 541 | #if defined(CONFIG_BOOTP_HOSTNAME) |
232c150a WD |
542 | *e++ = 12; /* Hostname */ |
543 | *cnt += 1; | |
3861aa5c | 544 | #endif |
1fe80d79 | 545 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
232c150a WD |
546 | *e++ = 13; /* Boot File Size */ |
547 | *cnt += 1; | |
3861aa5c | 548 | #endif |
1fe80d79 | 549 | #if defined(CONFIG_BOOTP_BOOTPATH) |
232c150a WD |
550 | *e++ = 17; /* Boot path */ |
551 | *cnt += 1; | |
3861aa5c | 552 | #endif |
1fe80d79 | 553 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
232c150a WD |
554 | *e++ = 40; /* NIS Domain name request */ |
555 | *cnt += 1; | |
ea287deb | 556 | #endif |
1fe80d79 | 557 | #if defined(CONFIG_BOOTP_NTPSERVER) |
ea287deb WD |
558 | *e++ = 42; |
559 | *cnt += 1; | |
3861aa5c | 560 | #endif |
258ccd68 JL |
561 | /* no options, so back up to avoid sending an empty request list */ |
562 | if (*cnt == 0) | |
563 | e -= 2; | |
564 | ||
232c150a | 565 | *e++ = 255; /* End of the list */ |
3861aa5c | 566 | |
232c150a | 567 | /* Pad to minimal length */ |
3861aa5c | 568 | #ifdef CONFIG_DHCP_MIN_EXT_LEN |
21076f61 | 569 | while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN) |
232c150a | 570 | *e++ = 0; |
3861aa5c WD |
571 | #endif |
572 | ||
232c150a | 573 | return e - start; |
3861aa5c WD |
574 | } |
575 | ||
610f2e9c | 576 | #else |
3861aa5c | 577 | /* |
3090b7e3 | 578 | * Warning: no field size check - change CONFIG_BOOTP_* at your own risk! |
3861aa5c | 579 | */ |
049a95a7 | 580 | static int bootp_extended(u8 *e) |
3861aa5c | 581 | { |
232c150a | 582 | u8 *start = e; |
3861aa5c | 583 | |
232c150a WD |
584 | *e++ = 99; /* RFC1048 Magic Cookie */ |
585 | *e++ = 130; | |
586 | *e++ = 83; | |
587 | *e++ = 99; | |
3861aa5c | 588 | |
643d1ab2 | 589 | #if defined(CONFIG_CMD_DHCP) |
232c150a WD |
590 | *e++ = 53; /* DHCP Message Type */ |
591 | *e++ = 1; | |
592 | *e++ = DHCP_DISCOVER; | |
593 | ||
594 | *e++ = 57; /* Maximum DHCP Message Size */ | |
595 | *e++ = 2; | |
f8315731 JH |
596 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16; |
597 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; | |
610f2e9c | 598 | #endif |
3861aa5c | 599 | |
7ac2fe2d IY |
600 | #if defined(CONFIG_BOOTP_VCI_STRING) || \ |
601 | (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING)) | |
602 | #ifdef CONFIG_SPL_BUILD | |
603 | put_vci(e, CONFIG_SPL_NET_VCI_STRING); | |
604 | #else | |
9ace17c8 IY |
605 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
606 | #endif | |
7ac2fe2d | 607 | #endif |
9ace17c8 | 608 | |
1fe80d79 | 609 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
610 | *e++ = 1; /* Subnet mask request */ |
611 | *e++ = 4; | |
612 | e += 4; | |
3861aa5c WD |
613 | #endif |
614 | ||
1fe80d79 | 615 | #if defined(CONFIG_BOOTP_GATEWAY) |
232c150a WD |
616 | *e++ = 3; /* Default gateway request */ |
617 | *e++ = 4; | |
618 | e += 4; | |
3861aa5c WD |
619 | #endif |
620 | ||
1fe80d79 | 621 | #if defined(CONFIG_BOOTP_DNS) |
232c150a WD |
622 | *e++ = 6; /* Domain Name Server */ |
623 | *e++ = 4; | |
624 | e += 4; | |
3861aa5c WD |
625 | #endif |
626 | ||
1fe80d79 | 627 | #if defined(CONFIG_BOOTP_HOSTNAME) |
232c150a WD |
628 | *e++ = 12; /* Host name request */ |
629 | *e++ = 32; | |
630 | e += 32; | |
3861aa5c WD |
631 | #endif |
632 | ||
1fe80d79 | 633 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
232c150a WD |
634 | *e++ = 13; /* Boot file size */ |
635 | *e++ = 2; | |
636 | e += 2; | |
3861aa5c WD |
637 | #endif |
638 | ||
1fe80d79 | 639 | #if defined(CONFIG_BOOTP_BOOTPATH) |
232c150a WD |
640 | *e++ = 17; /* Boot path */ |
641 | *e++ = 32; | |
642 | e += 32; | |
3861aa5c WD |
643 | #endif |
644 | ||
1fe80d79 | 645 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
232c150a WD |
646 | *e++ = 40; /* NIS Domain name request */ |
647 | *e++ = 32; | |
648 | e += 32; | |
3861aa5c | 649 | #endif |
09e3a67d LP |
650 | #if defined(CONFIG_BOOTP_NTPSERVER) |
651 | *e++ = 42; | |
652 | *e++ = 4; | |
653 | e += 4; | |
654 | #endif | |
3861aa5c | 655 | |
232c150a | 656 | *e++ = 255; /* End of the list */ |
3861aa5c | 657 | |
232c150a | 658 | return e - start; |
3861aa5c | 659 | } |
610f2e9c | 660 | #endif |
3861aa5c | 661 | |
7044c6bb | 662 | void bootp_reset(void) |
f59be6e8 | 663 | { |
92ac8acc | 664 | bootp_num_ids = 0; |
7044c6bb | 665 | bootp_try = 0; |
f59be6e8 | 666 | bootp_start = get_timer(0); |
92ac8acc | 667 | bootp_timeout = 250; |
f59be6e8 SW |
668 | } |
669 | ||
7044c6bb | 670 | void bootp_request(void) |
3861aa5c | 671 | { |
db288a96 | 672 | uchar *pkt, *iphdr; |
7044c6bb | 673 | struct bootp_hdr *bp; |
ae446f56 JH |
674 | int extlen, pktlen, iplen; |
675 | int eth_hdr_size; | |
eafc8db0 | 676 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
8e8d73b4 | 677 | ulong rand_ms; |
eafc8db0 | 678 | #endif |
5917e7d1 | 679 | u32 bootp_id; |
049a95a7 JH |
680 | struct in_addr zero_ip; |
681 | struct in_addr bcast_ip; | |
50768f5b | 682 | char *ep; /* Environment pointer */ |
3861aa5c | 683 | |
573f14fe | 684 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start"); |
643d1ab2 | 685 | #if defined(CONFIG_CMD_DHCP) |
3861aa5c WD |
686 | dhcp_state = INIT; |
687 | #endif | |
688 | ||
50768f5b AM |
689 | ep = getenv("bootpretryperiod"); |
690 | if (ep != NULL) | |
691 | time_taken_max = simple_strtoul(ep, NULL, 10); | |
692 | else | |
693 | time_taken_max = TIMEOUT_MS; | |
694 | ||
3861aa5c | 695 | #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ |
7044c6bb | 696 | if (bootp_try == 0) |
eafc8db0 | 697 | srand_mac(); |
3861aa5c | 698 | |
7044c6bb JH |
699 | if (bootp_try <= 2) /* Start with max 1024 * 1ms */ |
700 | rand_ms = rand() >> (22 - bootp_try); | |
eafc8db0 JH |
701 | else /* After 3rd BOOTP request max 8192 * 1ms */ |
702 | rand_ms = rand() >> 19; | |
3861aa5c | 703 | |
eafc8db0 | 704 | printf("Random delay: %ld ms...\n", rand_ms); |
8e8d73b4 | 705 | mdelay(rand_ms); |
3090b7e3 | 706 | |
3861aa5c WD |
707 | #endif /* CONFIG_BOOTP_RANDOM_DELAY */ |
708 | ||
7044c6bb | 709 | printf("BOOTP broadcast %d\n", ++bootp_try); |
1203fcce | 710 | pkt = net_tx_packet; |
3090b7e3 | 711 | memset((void *)pkt, 0, PKTSIZE); |
3861aa5c | 712 | |
1203fcce | 713 | eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); |
ae446f56 | 714 | pkt += eth_hdr_size; |
3861aa5c WD |
715 | |
716 | /* | |
3090b7e3 JH |
717 | * Next line results in incorrect packet size being transmitted, |
718 | * resulting in errors in some DHCP servers, reporting missing bytes. | |
719 | * Size must be set in packet header after extension length has been | |
720 | * determined. | |
3861aa5c WD |
721 | * C. Hallinan, DS4.COM, Inc. |
722 | */ | |
4b11c916 | 723 | /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, |
7044c6bb | 724 | sizeof (struct bootp_hdr)); */ |
4b11c916 | 725 | iphdr = pkt; /* We need this later for net_set_udp_header() */ |
594c26f8 | 726 | pkt += IP_UDP_HDR_SIZE; |
3861aa5c | 727 | |
7044c6bb | 728 | bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
729 | bp->bp_op = OP_BOOTREQUEST; |
730 | bp->bp_htype = HWT_ETHER; | |
731 | bp->bp_hlen = HWL_ETHER; | |
732 | bp->bp_hops = 0; | |
454d9d3e SB |
733 | /* |
734 | * according to RFC1542, should be 0 on first request, secs since | |
735 | * first request otherwise | |
736 | */ | |
737 | bp->bp_secs = htons(get_timer(bootp_start) / 1000); | |
049a95a7 JH |
738 | zero_ip.s_addr = 0; |
739 | net_write_ip(&bp->bp_ciaddr, zero_ip); | |
740 | net_write_ip(&bp->bp_yiaddr, zero_ip); | |
741 | net_write_ip(&bp->bp_siaddr, zero_ip); | |
742 | net_write_ip(&bp->bp_giaddr, zero_ip); | |
0adb5b76 | 743 | memcpy(bp->bp_chaddr, net_ethaddr, 6); |
1411157d | 744 | copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); |
3861aa5c WD |
745 | |
746 | /* Request additional information from the BOOTP/DHCP server */ | |
643d1ab2 | 747 | #if defined(CONFIG_CMD_DHCP) |
049a95a7 JH |
748 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip, |
749 | zero_ip); | |
3861aa5c | 750 | #else |
049a95a7 | 751 | extlen = bootp_extended((u8 *)bp->bp_vend); |
610f2e9c | 752 | #endif |
3861aa5c WD |
753 | |
754 | /* | |
755 | * Bootp ID is the lower 4 bytes of our ethernet address | |
49f3bdbb | 756 | * plus the current time in ms. |
3861aa5c | 757 | */ |
5917e7d1 ST |
758 | bootp_id = ((u32)net_ethaddr[2] << 24) |
759 | | ((u32)net_ethaddr[3] << 16) | |
760 | | ((u32)net_ethaddr[4] << 8) | |
761 | | (u32)net_ethaddr[5]; | |
7044c6bb JH |
762 | bootp_id += get_timer(0); |
763 | bootp_id = htonl(bootp_id); | |
764 | bootp_add_id(bootp_id); | |
5917e7d1 | 765 | net_copy_u32(&bp->bp_id, &bootp_id); |
3861aa5c WD |
766 | |
767 | /* | |
768 | * Calculate proper packet lengths taking into account the | |
769 | * variable size of the options field | |
770 | */ | |
ae446f56 JH |
771 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
772 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; | |
049a95a7 JH |
773 | bcast_ip.s_addr = 0xFFFFFFFFL; |
774 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
bc0571fc | 775 | net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); |
3861aa5c | 776 | |
643d1ab2 | 777 | #if defined(CONFIG_CMD_DHCP) |
3861aa5c | 778 | dhcp_state = SELECTING; |
049a95a7 | 779 | net_set_udp_handler(dhcp_handler); |
3861aa5c | 780 | #else |
049a95a7 | 781 | net_set_udp_handler(bootp_handler); |
610f2e9c | 782 | #endif |
1203fcce | 783 | net_send_packet(net_tx_packet, pktlen); |
3861aa5c WD |
784 | } |
785 | ||
643d1ab2 | 786 | #if defined(CONFIG_CMD_DHCP) |
774c3e05 | 787 | static void dhcp_process_options(uchar *popt, uchar *end) |
3861aa5c | 788 | { |
3861aa5c | 789 | int oplen, size; |
d8d8724b WD |
790 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
791 | int *to_ptr; | |
792 | #endif | |
3861aa5c | 793 | |
232c150a | 794 | while (popt < end && *popt != 0xff) { |
3861aa5c | 795 | oplen = *(popt + 1); |
232c150a | 796 | switch (*popt) { |
c56eb573 SB |
797 | case 0: |
798 | oplen = -1; /* Pad omits len byte */ | |
799 | break; | |
232c150a | 800 | case 1: |
049a95a7 | 801 | net_copy_ip(&net_netmask, (popt + 2)); |
232c150a | 802 | break; |
1fe80d79 | 803 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
ea287deb | 804 | case 2: /* Time offset */ |
bc0571fc | 805 | to_ptr = &net_ntp_time_offset; |
5917e7d1 | 806 | net_copy_u32((u32 *)to_ptr, (u32 *)(popt + 2)); |
bc0571fc | 807 | net_ntp_time_offset = ntohl(net_ntp_time_offset); |
ea287deb WD |
808 | break; |
809 | #endif | |
232c150a | 810 | case 3: |
049a95a7 | 811 | net_copy_ip(&net_gateway, (popt + 2)); |
232c150a WD |
812 | break; |
813 | case 6: | |
049a95a7 | 814 | net_copy_ip(&net_dns_server, (popt + 2)); |
1fe80d79 | 815 | #if defined(CONFIG_BOOTP_DNS2) |
3090b7e3 | 816 | if (*(popt + 1) > 4) |
049a95a7 | 817 | net_copy_ip(&net_dns_server2, (popt + 2 + 4)); |
fe389a82 | 818 | #endif |
232c150a WD |
819 | break; |
820 | case 12: | |
3090b7e3 | 821 | size = truncate_sz("Host Name", |
586cbe51 JH |
822 | sizeof(net_hostname), oplen); |
823 | memcpy(&net_hostname, popt + 2, size); | |
824 | net_hostname[size] = 0; | |
232c150a WD |
825 | break; |
826 | case 15: /* Ignore Domain Name Option */ | |
827 | break; | |
828 | case 17: | |
3090b7e3 | 829 | size = truncate_sz("Root Path", |
586cbe51 JH |
830 | sizeof(net_root_path), oplen); |
831 | memcpy(&net_root_path, popt + 2, size); | |
832 | net_root_path[size] = 0; | |
232c150a | 833 | break; |
ee0f60df BR |
834 | case 28: /* Ignore Broadcast Address Option */ |
835 | break; | |
1fe80d79 | 836 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
ea287deb | 837 | case 42: /* NTP server IP */ |
049a95a7 | 838 | net_copy_ip(&net_ntp_server, (popt + 2)); |
ea287deb WD |
839 | break; |
840 | #endif | |
232c150a | 841 | case 51: |
5917e7d1 | 842 | net_copy_u32(&dhcp_leasetime, (u32 *)(popt + 2)); |
232c150a | 843 | break; |
ec87b1b3 SB |
844 | case 52: |
845 | dhcp_option_overload = popt[2]; | |
846 | break; | |
232c150a WD |
847 | case 53: /* Ignore Message Type Option */ |
848 | break; | |
849 | case 54: | |
049a95a7 | 850 | net_copy_ip(&dhcp_server_ip, (popt + 2)); |
232c150a WD |
851 | break; |
852 | case 58: /* Ignore Renewal Time Option */ | |
853 | break; | |
854 | case 59: /* Ignore Rebinding Time Option */ | |
855 | break; | |
3b2e4fd9 WD |
856 | case 66: /* Ignore TFTP server name */ |
857 | break; | |
ec87b1b3 SB |
858 | case 67: /* Bootfile option */ |
859 | size = truncate_sz("Bootfile", | |
860 | sizeof(net_boot_file_name), oplen); | |
861 | memcpy(&net_boot_file_name, popt + 2, size); | |
862 | net_boot_file_name[size] = 0; | |
3b2e4fd9 | 863 | break; |
232c150a | 864 | default: |
1fe80d79 | 865 | #if defined(CONFIG_BOOTP_VENDOREX) |
3090b7e3 | 866 | if (dhcp_vendorex_proc(popt)) |
8bde7f77 | 867 | break; |
3861aa5c | 868 | #endif |
3090b7e3 | 869 | printf("*** Unhandled DHCP Option in OFFER/ACK:" |
7044c6bb | 870 | " %d\n", *popt); |
232c150a | 871 | break; |
3861aa5c WD |
872 | } |
873 | popt += oplen + 2; /* Process next option */ | |
874 | } | |
875 | } | |
876 | ||
774c3e05 SB |
877 | static void dhcp_packet_process_options(struct bootp_hdr *bp) |
878 | { | |
879 | uchar *popt = (uchar *)&bp->bp_vend[4]; | |
880 | uchar *end = popt + BOOTP_HDR_SIZE; | |
881 | ||
882 | if (net_read_u32((u32 *)&bp->bp_vend[0]) != htonl(BOOTP_VENDOR_MAGIC)) | |
883 | return; | |
884 | ||
885 | dhcp_option_overload = 0; | |
886 | ||
887 | /* | |
888 | * The 'options' field MUST be interpreted first, 'file' next, | |
889 | * 'sname' last. | |
890 | */ | |
891 | dhcp_process_options(popt, end); | |
892 | ||
893 | if (dhcp_option_overload & OVERLOAD_FILE) { | |
894 | popt = (uchar *)bp->bp_file; | |
895 | end = popt + sizeof(bp->bp_file); | |
896 | dhcp_process_options(popt, end); | |
897 | } | |
898 | ||
899 | if (dhcp_option_overload & OVERLOAD_SNAME) { | |
900 | popt = (uchar *)bp->bp_sname; | |
901 | end = popt + sizeof(bp->bp_sname); | |
902 | dhcp_process_options(popt, end); | |
903 | } | |
904 | } | |
905 | ||
7044c6bb | 906 | static int dhcp_message_type(unsigned char *popt) |
3861aa5c | 907 | { |
5917e7d1 | 908 | if (net_read_u32((u32 *)popt) != htonl(BOOTP_VENDOR_MAGIC)) |
3861aa5c WD |
909 | return -1; |
910 | ||
911 | popt += 4; | |
3090b7e3 JH |
912 | while (*popt != 0xff) { |
913 | if (*popt == 53) /* DHCP Message Type */ | |
3861aa5c | 914 | return *(popt + 2); |
c56eb573 SB |
915 | if (*popt == 0) { |
916 | /* Pad */ | |
917 | popt += 1; | |
918 | } else { | |
919 | /* Scan through all options */ | |
920 | popt += *(popt + 1) + 2; | |
921 | } | |
3861aa5c WD |
922 | } |
923 | return -1; | |
924 | } | |
925 | ||
7044c6bb | 926 | static void dhcp_send_request_packet(struct bootp_hdr *bp_offer) |
3861aa5c | 927 | { |
db288a96 | 928 | uchar *pkt, *iphdr; |
7044c6bb | 929 | struct bootp_hdr *bp; |
3861aa5c | 930 | int pktlen, iplen, extlen; |
ae446f56 | 931 | int eth_hdr_size; |
049a95a7 JH |
932 | struct in_addr offered_ip; |
933 | struct in_addr zero_ip; | |
934 | struct in_addr bcast_ip; | |
3861aa5c | 935 | |
7044c6bb | 936 | debug("dhcp_send_request_packet: Sending DHCPREQUEST\n"); |
1203fcce | 937 | pkt = net_tx_packet; |
3090b7e3 | 938 | memset((void *)pkt, 0, PKTSIZE); |
3861aa5c | 939 | |
1203fcce | 940 | eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); |
ae446f56 | 941 | pkt += eth_hdr_size; |
3861aa5c | 942 | |
3090b7e3 | 943 | iphdr = pkt; /* We'll need this later to set proper pkt size */ |
594c26f8 | 944 | pkt += IP_UDP_HDR_SIZE; |
3861aa5c | 945 | |
7044c6bb | 946 | bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
947 | bp->bp_op = OP_BOOTREQUEST; |
948 | bp->bp_htype = HWT_ETHER; | |
949 | bp->bp_hlen = HWL_ETHER; | |
950 | bp->bp_hops = 0; | |
454d9d3e | 951 | bp->bp_secs = htons(get_timer(bootp_start) / 1000); |
3090b7e3 JH |
952 | /* Do not set the client IP, your IP, or server IP yet, since it |
953 | * hasn't been ACK'ed by the server yet */ | |
e5c794e4 | 954 | |
c6686703 | 955 | /* |
d82718fe WD |
956 | * RFC3046 requires Relay Agents to discard packets with |
957 | * nonzero and offered giaddr | |
958 | */ | |
049a95a7 JH |
959 | zero_ip.s_addr = 0; |
960 | net_write_ip(&bp->bp_giaddr, zero_ip); | |
d82718fe | 961 | |
0adb5b76 | 962 | memcpy(bp->bp_chaddr, net_ethaddr, 6); |
b2b7fbc3 | 963 | copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); |
3861aa5c WD |
964 | |
965 | /* | |
966 | * ID is the id of the OFFER packet | |
967 | */ | |
968 | ||
5917e7d1 | 969 | net_copy_u32(&bp->bp_id, &bp_offer->bp_id); |
3861aa5c WD |
970 | |
971 | /* | |
972 | * Copy options from OFFER packet if present | |
973 | */ | |
e5c794e4 JF |
974 | |
975 | /* Copy offered IP into the parameters request list */ | |
049a95a7 JH |
976 | net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr); |
977 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST, | |
978 | dhcp_server_ip, offered_ip); | |
3861aa5c | 979 | |
ae446f56 JH |
980 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
981 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; | |
049a95a7 JH |
982 | bcast_ip.s_addr = 0xFFFFFFFFL; |
983 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
3861aa5c | 984 | |
d9a2f416 AV |
985 | #ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY |
986 | udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY); | |
987 | #endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */ | |
f9623229 | 988 | debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen); |
1203fcce | 989 | net_send_packet(net_tx_packet, pktlen); |
3861aa5c WD |
990 | } |
991 | ||
992 | /* | |
993 | * Handle DHCP received packets. | |
994 | */ | |
049a95a7 JH |
995 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
996 | unsigned src, unsigned len) | |
3861aa5c | 997 | { |
7044c6bb | 998 | struct bootp_hdr *bp = (struct bootp_hdr *)pkt; |
3861aa5c | 999 | |
0ebf04c6 | 1000 | debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", |
7044c6bb | 1001 | src, dest, len, dhcp_state); |
3861aa5c | 1002 | |
3090b7e3 | 1003 | /* Filter out pkts we don't want */ |
867d6ae2 | 1004 | if (check_reply_packet(pkt, dest, src, len)) |
3861aa5c WD |
1005 | return; |
1006 | ||
7044c6bb JH |
1007 | debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: " |
1008 | "%d\n", src, dest, len, dhcp_state); | |
3861aa5c | 1009 | |
44c42dd4 PF |
1010 | if (net_read_ip(&bp->bp_yiaddr).s_addr == 0) |
1011 | return; | |
1012 | ||
3861aa5c WD |
1013 | switch (dhcp_state) { |
1014 | case SELECTING: | |
1015 | /* | |
1016 | * Wait an appropriate time for any potential DHCPOFFER packets | |
3090b7e3 JH |
1017 | * to arrive. Then select one, and generate DHCPREQUEST |
1018 | * response. If filename is in format we recognize, assume it | |
1019 | * is a valid OFFER from a server we want. | |
3861aa5c | 1020 | */ |
0ebf04c6 | 1021 | debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file); |
6d0f6bcf | 1022 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
3861aa5c | 1023 | if (strncmp(bp->bp_file, |
6d0f6bcf | 1024 | CONFIG_SYS_BOOTFILE_PREFIX, |
3090b7e3 | 1025 | strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) { |
6d0f6bcf | 1026 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
774c3e05 | 1027 | dhcp_packet_process_options(bp); |
3861aa5c | 1028 | |
0ebf04c6 | 1029 | debug("TRANSITIONING TO REQUESTING STATE\n"); |
3861aa5c | 1030 | dhcp_state = REQUESTING; |
759a51b4 | 1031 | |
bc0571fc | 1032 | net_set_timeout_handler(5000, bootp_timeout_handler); |
7044c6bb | 1033 | dhcp_send_request_packet(bp); |
6d0f6bcf | 1034 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
3861aa5c | 1035 | } |
6d0f6bcf | 1036 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
3861aa5c WD |
1037 | |
1038 | return; | |
1039 | break; | |
1040 | case REQUESTING: | |
0ebf04c6 | 1041 | debug("DHCP State: REQUESTING\n"); |
3861aa5c | 1042 | |
7044c6bb | 1043 | if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) { |
774c3e05 | 1044 | dhcp_packet_process_options(bp); |
3090b7e3 | 1045 | /* Store net params from reply */ |
7044c6bb | 1046 | store_net_params(bp); |
3861aa5c | 1047 | dhcp_state = BOUND; |
92ac8acc | 1048 | printf("DHCP client bound to address %pI4 (%lu ms)\n", |
7044c6bb | 1049 | &net_ip, get_timer(bootp_start)); |
4f28c9b1 | 1050 | net_set_timeout_handler(0, (thand_f *)0); |
573f14fe | 1051 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, |
7044c6bb | 1052 | "bootp_stop"); |
3861aa5c | 1053 | |
e4a3d57d | 1054 | net_auto_load(); |
3861aa5c WD |
1055 | return; |
1056 | } | |
1057 | break; | |
51dfe138 RB |
1058 | case BOUND: |
1059 | /* DHCP client bound to address */ | |
1060 | break; | |
3861aa5c | 1061 | default: |
3090b7e3 | 1062 | puts("DHCP: INVALID STATE\n"); |
3861aa5c WD |
1063 | break; |
1064 | } | |
3861aa5c WD |
1065 | } |
1066 | ||
7044c6bb | 1067 | void dhcp_request(void) |
3861aa5c | 1068 | { |
7044c6bb | 1069 | bootp_request(); |
3861aa5c | 1070 | } |
992742a5 | 1071 | #endif /* CONFIG_CMD_DHCP */ |