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