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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> | |
0efe1bcf | 13 | #include <efi_loader.h> |
3861aa5c | 14 | #include <net.h> |
34696958 | 15 | #include <net/tftp.h> |
3861aa5c | 16 | #include "bootp.h" |
232c150a | 17 | #include "nfs.h" |
3861aa5c WD |
18 | #ifdef CONFIG_STATUS_LED |
19 | #include <status_led.h> | |
20 | #endif | |
db7720ba KP |
21 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
22 | #include "net_rand.h" | |
23 | #endif | |
3861aa5c | 24 | |
3090b7e3 | 25 | #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */ |
3861aa5c | 26 | |
f59be6e8 SW |
27 | /* |
28 | * The timeout for the initial BOOTP/DHCP request used to be described by a | |
29 | * counter of fixed-length timeout periods. TIMEOUT_COUNT represents | |
30 | * that counter | |
31 | * | |
32 | * Now that the timeout periods are variable (exponential backoff and retry) | |
33 | * we convert the timeout count to the absolute time it would have take to | |
34 | * execute that many retries, and keep sending retry packets until that time | |
35 | * is reached. | |
36 | */ | |
232c150a | 37 | #ifndef CONFIG_NET_RETRY_COUNT |
3090b7e3 | 38 | # define TIMEOUT_COUNT 5 /* # of timeouts before giving up */ |
3861aa5c | 39 | #else |
232c150a | 40 | # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT) |
3861aa5c | 41 | #endif |
f59be6e8 | 42 | #define TIMEOUT_MS ((3 + (TIMEOUT_COUNT * 5)) * 1000) |
3861aa5c | 43 | |
3090b7e3 JH |
44 | #define PORT_BOOTPS 67 /* BOOTP server UDP port */ |
45 | #define PORT_BOOTPC 68 /* BOOTP client UDP port */ | |
3861aa5c | 46 | |
3090b7e3 | 47 | #ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */ |
232c150a | 48 | #define CONFIG_DHCP_MIN_EXT_LEN 64 |
3861aa5c WD |
49 | #endif |
50 | ||
92ac8acc TR |
51 | #ifndef CONFIG_BOOTP_ID_CACHE_SIZE |
52 | #define CONFIG_BOOTP_ID_CACHE_SIZE 4 | |
53 | #endif | |
54 | ||
5917e7d1 | 55 | u32 bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE]; |
92ac8acc | 56 | unsigned int bootp_num_ids; |
7044c6bb | 57 | int bootp_try; |
f59be6e8 SW |
58 | ulong bootp_start; |
59 | ulong bootp_timeout; | |
586cbe51 JH |
60 | char net_nis_domain[32] = {0,}; /* Our NIS domain */ |
61 | char net_hostname[32] = {0,}; /* Our hostname */ | |
62 | char net_root_path[64] = {0,}; /* Our bootpath */ | |
3861aa5c | 63 | |
50768f5b AM |
64 | static ulong time_taken_max; |
65 | ||
643d1ab2 | 66 | #if defined(CONFIG_CMD_DHCP) |
06370590 | 67 | static dhcp_state_t dhcp_state = INIT; |
5917e7d1 | 68 | static u32 dhcp_leasetime; |
049a95a7 | 69 | static struct in_addr dhcp_server_ip; |
ec87b1b3 SB |
70 | static u8 dhcp_option_overload; |
71 | #define OVERLOAD_FILE 1 | |
72 | #define OVERLOAD_SNAME 2 | |
049a95a7 JH |
73 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
74 | unsigned src, unsigned len); | |
3861aa5c WD |
75 | |
76 | /* For Debug */ | |
3e38691e WD |
77 | #if 0 |
78 | static char *dhcpmsg2str(int type) | |
3861aa5c WD |
79 | { |
80 | switch (type) { | |
232c150a WD |
81 | case 1: return "DHCPDISCOVER"; break; |
82 | case 2: return "DHCPOFFER"; break; | |
83 | case 3: return "DHCPREQUEST"; break; | |
84 | case 4: return "DHCPDECLINE"; break; | |
85 | case 5: return "DHCPACK"; break; | |
86 | case 6: return "DHCPNACK"; break; | |
87 | case 7: return "DHCPRELEASE"; break; | |
3861aa5c WD |
88 | default: return "UNKNOWN/INVALID MSG TYPE"; break; |
89 | } | |
90 | } | |
3e38691e | 91 | #endif |
610f2e9c | 92 | #endif |
3861aa5c | 93 | |
92ac8acc TR |
94 | static void bootp_add_id(ulong id) |
95 | { | |
96 | if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) { | |
97 | size_t size = sizeof(bootp_ids) - sizeof(id); | |
98 | ||
99 | memmove(bootp_ids, &bootp_ids[1], size); | |
100 | bootp_ids[bootp_num_ids - 1] = id; | |
101 | } else { | |
102 | bootp_ids[bootp_num_ids] = id; | |
103 | bootp_num_ids++; | |
104 | } | |
105 | } | |
106 | ||
107 | static bool bootp_match_id(ulong id) | |
108 | { | |
109 | unsigned int i; | |
110 | ||
111 | for (i = 0; i < bootp_num_ids; i++) | |
112 | if (bootp_ids[i] == id) | |
113 | return true; | |
114 | ||
115 | return false; | |
116 | } | |
117 | ||
867d6ae2 SB |
118 | static int check_reply_packet(uchar *pkt, unsigned dest, unsigned src, |
119 | unsigned len) | |
3861aa5c | 120 | { |
7044c6bb | 121 | struct bootp_hdr *bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
122 | int retval = 0; |
123 | ||
124 | if (dest != PORT_BOOTPC || src != PORT_BOOTPS) | |
125 | retval = -1; | |
7044c6bb | 126 | else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE) |
3861aa5c | 127 | retval = -2; |
867d6ae2 | 128 | else if (bp->bp_op != OP_BOOTREPLY) |
3861aa5c | 129 | retval = -3; |
3861aa5c WD |
130 | else if (bp->bp_htype != HWT_ETHER) |
131 | retval = -4; | |
132 | else if (bp->bp_hlen != HWL_ETHER) | |
133 | retval = -5; | |
5917e7d1 | 134 | else if (!bootp_match_id(net_read_u32(&bp->bp_id))) |
3861aa5c | 135 | retval = -6; |
214cc905 AP |
136 | else if (memcmp(bp->bp_chaddr, net_ethaddr, HWL_ETHER) != 0) |
137 | retval = -7; | |
3861aa5c | 138 | |
0ebf04c6 | 139 | debug("Filtering pkt = %d\n", retval); |
3861aa5c WD |
140 | |
141 | return retval; | |
142 | } | |
143 | ||
144 | /* | |
145 | * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet | |
146 | */ | |
7044c6bb | 147 | static void store_net_params(struct bootp_hdr *bp) |
3861aa5c | 148 | { |
5d110f0a | 149 | #if !defined(CONFIG_BOOTP_SERVERIP) |
049a95a7 | 150 | struct in_addr tmp_ip; |
1752f0fd | 151 | |
049a95a7 JH |
152 | net_copy_ip(&tmp_ip, &bp->bp_siaddr); |
153 | if (tmp_ip.s_addr != 0) | |
154 | net_copy_ip(&net_server_ip, &bp->bp_siaddr); | |
1203fcce JH |
155 | memcpy(net_server_ethaddr, |
156 | ((struct ethernet_hdr *)net_rx_packet)->et_src, 6); | |
ec87b1b3 SB |
157 | if ( |
158 | #if defined(CONFIG_CMD_DHCP) | |
159 | !(dhcp_option_overload & OVERLOAD_FILE) && | |
160 | #endif | |
161 | (strlen(bp->bp_file) > 0)) { | |
1411157d JH |
162 | copy_filename(net_boot_file_name, bp->bp_file, |
163 | sizeof(net_boot_file_name)); | |
ec87b1b3 | 164 | } |
3861aa5c | 165 | |
1411157d | 166 | debug("net_boot_file_name: %s\n", net_boot_file_name); |
3861aa5c WD |
167 | |
168 | /* Propagate to environment: | |
8bde7f77 | 169 | * don't delete exising entry when BOOTP / DHCP reply does |
3861aa5c WD |
170 | * not contain a new value |
171 | */ | |
1411157d JH |
172 | if (*net_boot_file_name) |
173 | setenv("bootfile", net_boot_file_name); | |
ecec4e9c | 174 | #endif |
049a95a7 | 175 | net_copy_ip(&net_ip, &bp->bp_yiaddr); |
3861aa5c WD |
176 | } |
177 | ||
3090b7e3 | 178 | static int truncate_sz(const char *name, int maxlen, int curlen) |
3861aa5c WD |
179 | { |
180 | if (curlen >= maxlen) { | |
3090b7e3 JH |
181 | printf("*** WARNING: %s is too long (%d - max: %d)" |
182 | " - truncated\n", name, curlen, maxlen); | |
3861aa5c WD |
183 | curlen = maxlen - 1; |
184 | } | |
3090b7e3 | 185 | return curlen; |
3861aa5c WD |
186 | } |
187 | ||
643d1ab2 | 188 | #if !defined(CONFIG_CMD_DHCP) |
3861aa5c | 189 | |
7044c6bb | 190 | static void bootp_process_vendor_field(u8 *ext) |
3861aa5c | 191 | { |
232c150a | 192 | int size = *(ext + 1); |
3861aa5c | 193 | |
0ebf04c6 | 194 | debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, |
7044c6bb | 195 | *(ext + 1)); |
3861aa5c | 196 | |
1411157d | 197 | net_boot_file_expected_size_in_blocks = 0; |
3861aa5c | 198 | |
232c150a WD |
199 | switch (*ext) { |
200 | /* Fixed length fields */ | |
3090b7e3 | 201 | case 1: /* Subnet mask */ |
049a95a7 JH |
202 | if (net_netmask.s_addr == 0) |
203 | net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2)); | |
3861aa5c | 204 | break; |
3090b7e3 | 205 | case 2: /* Time offset - Not yet supported */ |
3861aa5c | 206 | break; |
232c150a | 207 | /* Variable length fields */ |
3090b7e3 | 208 | case 3: /* Gateways list */ |
049a95a7 JH |
209 | if (net_gateway.s_addr == 0) |
210 | net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2)); | |
3861aa5c | 211 | break; |
3090b7e3 | 212 | case 4: /* Time server - Not yet supported */ |
3861aa5c | 213 | break; |
3090b7e3 | 214 | case 5: /* IEN-116 name server - Not yet supported */ |
3861aa5c WD |
215 | break; |
216 | case 6: | |
049a95a7 JH |
217 | if (net_dns_server.s_addr == 0) |
218 | net_copy_ip(&net_dns_server, | |
219 | (struct in_addr *)(ext + 2)); | |
1fe80d79 | 220 | #if defined(CONFIG_BOOTP_DNS2) |
049a95a7 JH |
221 | if ((net_dns_server2.s_addr == 0) && (size > 4)) |
222 | net_copy_ip(&net_dns_server2, | |
223 | (struct in_addr *)(ext + 2 + 4)); | |
fe389a82 | 224 | #endif |
3861aa5c | 225 | break; |
3090b7e3 | 226 | case 7: /* Log server - Not yet supported */ |
3861aa5c | 227 | break; |
3090b7e3 | 228 | case 8: /* Cookie/Quote server - Not yet supported */ |
3861aa5c | 229 | break; |
3090b7e3 | 230 | case 9: /* LPR server - Not yet supported */ |
3861aa5c | 231 | break; |
3090b7e3 | 232 | case 10: /* Impress server - Not yet supported */ |
3861aa5c | 233 | break; |
3090b7e3 | 234 | case 11: /* RPL server - Not yet supported */ |
3861aa5c | 235 | break; |
3090b7e3 | 236 | case 12: /* Host name */ |
586cbe51 | 237 | if (net_hostname[0] == 0) { |
3090b7e3 | 238 | size = truncate_sz("Host Name", |
586cbe51 JH |
239 | sizeof(net_hostname), size); |
240 | memcpy(&net_hostname, ext + 2, size); | |
241 | net_hostname[size] = 0; | |
3861aa5c WD |
242 | } |
243 | break; | |
3090b7e3 | 244 | case 13: /* Boot file size */ |
3861aa5c | 245 | if (size == 2) |
1411157d JH |
246 | net_boot_file_expected_size_in_blocks = |
247 | ntohs(*(ushort *)(ext + 2)); | |
3861aa5c | 248 | else if (size == 4) |
1411157d JH |
249 | net_boot_file_expected_size_in_blocks = |
250 | ntohl(*(ulong *)(ext + 2)); | |
3861aa5c | 251 | break; |
3090b7e3 | 252 | case 14: /* Merit dump file - Not yet supported */ |
3861aa5c | 253 | break; |
3090b7e3 | 254 | case 15: /* Domain name - Not yet supported */ |
3861aa5c | 255 | break; |
3090b7e3 | 256 | case 16: /* Swap server - Not yet supported */ |
3861aa5c | 257 | break; |
3090b7e3 | 258 | case 17: /* Root path */ |
586cbe51 | 259 | if (net_root_path[0] == 0) { |
3090b7e3 | 260 | size = truncate_sz("Root Path", |
586cbe51 JH |
261 | sizeof(net_root_path), size); |
262 | memcpy(&net_root_path, ext + 2, size); | |
263 | net_root_path[size] = 0; | |
3861aa5c WD |
264 | } |
265 | break; | |
3090b7e3 | 266 | case 18: /* Extension path - Not yet supported */ |
3861aa5c | 267 | /* |
8bde7f77 WD |
268 | * This can be used to send the information of the |
269 | * vendor area in another file that the client can | |
270 | * access via TFTP. | |
3861aa5c WD |
271 | */ |
272 | break; | |
232c150a | 273 | /* IP host layer fields */ |
3090b7e3 | 274 | case 40: /* NIS Domain name */ |
586cbe51 | 275 | if (net_nis_domain[0] == 0) { |
3090b7e3 | 276 | size = truncate_sz("NIS Domain Name", |
586cbe51 JH |
277 | sizeof(net_nis_domain), size); |
278 | memcpy(&net_nis_domain, ext + 2, size); | |
279 | net_nis_domain[size] = 0; | |
3861aa5c WD |
280 | } |
281 | break; | |
09e3a67d LP |
282 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
283 | case 42: /* NTP server IP */ | |
049a95a7 | 284 | net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2)); |
09e3a67d LP |
285 | break; |
286 | #endif | |
232c150a | 287 | /* Application layer fields */ |
3090b7e3 | 288 | case 43: /* Vendor specific info - Not yet supported */ |
3861aa5c | 289 | /* |
8bde7f77 WD |
290 | * Binary information to exchange specific |
291 | * product information. | |
3861aa5c WD |
292 | */ |
293 | break; | |
232c150a WD |
294 | /* Reserved (custom) fields (128..254) */ |
295 | } | |
3861aa5c WD |
296 | } |
297 | ||
7044c6bb | 298 | static void bootp_process_vendor(u8 *ext, int size) |
3861aa5c | 299 | { |
232c150a | 300 | u8 *end = ext + size; |
3861aa5c | 301 | |
0ebf04c6 | 302 | debug("[BOOTP] Checking extension (%d bytes)...\n", size); |
3861aa5c | 303 | |
232c150a WD |
304 | while ((ext < end) && (*ext != 0xff)) { |
305 | if (*ext == 0) { | |
306 | ext++; | |
307 | } else { | |
308 | u8 *opt = ext; | |
309 | ||
310 | ext += ext[1] + 2; | |
311 | if (ext <= end) | |
7044c6bb | 312 | bootp_process_vendor_field(opt); |
232c150a | 313 | } |
3861aa5c | 314 | } |
3861aa5c | 315 | |
3090b7e3 | 316 | debug("[BOOTP] Received fields:\n"); |
049a95a7 JH |
317 | if (net_netmask.s_addr) |
318 | debug("net_netmask : %pI4\n", &net_netmask); | |
232c150a | 319 | |
049a95a7 JH |
320 | if (net_gateway.s_addr) |
321 | debug("net_gateway : %pI4", &net_gateway); | |
232c150a | 322 | |
1411157d JH |
323 | if (net_boot_file_expected_size_in_blocks) |
324 | debug("net_boot_file_expected_size_in_blocks : %d\n", | |
325 | net_boot_file_expected_size_in_blocks); | |
3861aa5c | 326 | |
586cbe51 JH |
327 | if (net_hostname[0]) |
328 | debug("net_hostname : %s\n", net_hostname); | |
232c150a | 329 | |
586cbe51 JH |
330 | if (net_root_path[0]) |
331 | debug("net_root_path : %s\n", net_root_path); | |
232c150a | 332 | |
586cbe51 JH |
333 | if (net_nis_domain[0]) |
334 | debug("net_nis_domain : %s\n", net_nis_domain); | |
232c150a | 335 | |
09e3a67d | 336 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
049a95a7 JH |
337 | if (net_ntp_server) |
338 | debug("net_ntp_server : %pI4\n", &net_ntp_server); | |
09e3a67d | 339 | #endif |
232c150a | 340 | } |
09349866 | 341 | |
3861aa5c WD |
342 | /* |
343 | * Handle a BOOTP received packet. | |
344 | */ | |
049a95a7 JH |
345 | static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
346 | unsigned src, unsigned len) | |
3861aa5c | 347 | { |
7044c6bb | 348 | struct bootp_hdr *bp; |
3861aa5c | 349 | |
0ebf04c6 | 350 | debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n", |
7044c6bb | 351 | src, dest, len, sizeof(struct bootp_hdr)); |
3861aa5c | 352 | |
7044c6bb | 353 | bp = (struct bootp_hdr *)pkt; |
3861aa5c | 354 | |
3090b7e3 | 355 | /* Filter out pkts we don't want */ |
867d6ae2 | 356 | if (check_reply_packet(pkt, dest, src, len)) |
3861aa5c WD |
357 | return; |
358 | ||
359 | /* | |
232c150a | 360 | * Got a good BOOTP reply. Copy the data into our variables. |
3861aa5c | 361 | */ |
82953328 | 362 | #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) |
3090b7e3 | 363 | status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); |
3861aa5c WD |
364 | #endif |
365 | ||
7044c6bb | 366 | store_net_params(bp); /* Store net parameters from reply */ |
3861aa5c WD |
367 | |
368 | /* Retrieve extended information (we must parse the vendor area) */ | |
5917e7d1 | 369 | if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) |
7044c6bb | 370 | bootp_process_vendor((uchar *)&bp->bp_vend[4], len); |
3861aa5c | 371 | |
bc0571fc | 372 | net_set_timeout_handler(0, (thand_f *)0); |
573f14fe | 373 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop"); |
3861aa5c | 374 | |
0ebf04c6 | 375 | debug("Got good BOOTP\n"); |
3861aa5c | 376 | |
e4a3d57d | 377 | net_auto_load(); |
3861aa5c | 378 | } |
610f2e9c | 379 | #endif |
3861aa5c WD |
380 | |
381 | /* | |
382 | * Timeout on BOOTP/DHCP request. | |
383 | */ | |
7044c6bb | 384 | static void bootp_timeout_handler(void) |
3861aa5c | 385 | { |
f59be6e8 SW |
386 | ulong time_taken = get_timer(bootp_start); |
387 | ||
50768f5b | 388 | if (time_taken >= time_taken_max) { |
2c00e099 | 389 | #ifdef CONFIG_BOOTP_MAY_FAIL |
f59be6e8 | 390 | puts("\nRetry time exceeded\n"); |
b977aa80 | 391 | net_set_state(NETLOOP_FAIL); |
2c00e099 | 392 | #else |
f59be6e8 | 393 | puts("\nRetry time exceeded; starting again\n"); |
bc0571fc | 394 | net_start_again(); |
2c00e099 | 395 | #endif |
3861aa5c | 396 | } else { |
f59be6e8 | 397 | bootp_timeout *= 2; |
92ac8acc TR |
398 | if (bootp_timeout > 2000) |
399 | bootp_timeout = 2000; | |
bc0571fc | 400 | net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); |
7044c6bb | 401 | bootp_request(); |
3861aa5c WD |
402 | } |
403 | } | |
404 | ||
9ace17c8 IY |
405 | #define put_vci(e, str) \ |
406 | do { \ | |
407 | size_t vci_strlen = strlen(str); \ | |
408 | *e++ = 60; /* Vendor Class Identifier */ \ | |
409 | *e++ = vci_strlen; \ | |
410 | memcpy(e, str, vci_strlen); \ | |
411 | e += vci_strlen; \ | |
412 | } while (0) | |
413 | ||
3861aa5c WD |
414 | /* |
415 | * Initialize BOOTP extension fields in the request. | |
416 | */ | |
643d1ab2 | 417 | #if defined(CONFIG_CMD_DHCP) |
049a95a7 JH |
418 | static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip, |
419 | struct in_addr requested_ip) | |
3861aa5c | 420 | { |
232c150a WD |
421 | u8 *start = e; |
422 | u8 *cnt; | |
d2b5d5c4 JH |
423 | #if defined(CONFIG_BOOTP_PXE) |
424 | char *uuid; | |
d2b5d5c4 JH |
425 | u16 clientarch; |
426 | #endif | |
232c150a | 427 | |
1fe80d79 | 428 | #if defined(CONFIG_BOOTP_VENDOREX) |
232c150a | 429 | u8 *x; |
3861aa5c | 430 | #endif |
1fe80d79 | 431 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
77ddac94 | 432 | char *hostname; |
fe389a82 | 433 | #endif |
3861aa5c | 434 | |
232c150a WD |
435 | *e++ = 99; /* RFC1048 Magic Cookie */ |
436 | *e++ = 130; | |
437 | *e++ = 83; | |
438 | *e++ = 99; | |
3861aa5c | 439 | |
232c150a WD |
440 | *e++ = 53; /* DHCP Message Type */ |
441 | *e++ = 1; | |
442 | *e++ = message_type; | |
3861aa5c | 443 | |
232c150a WD |
444 | *e++ = 57; /* Maximum DHCP Message Size */ |
445 | *e++ = 2; | |
f8315731 JH |
446 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8; |
447 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; | |
3861aa5c | 448 | |
049a95a7 JH |
449 | if (server_ip.s_addr) { |
450 | int tmp = ntohl(server_ip.s_addr); | |
3861aa5c | 451 | |
232c150a WD |
452 | *e++ = 54; /* ServerID */ |
453 | *e++ = 4; | |
454 | *e++ = tmp >> 24; | |
455 | *e++ = tmp >> 16; | |
456 | *e++ = tmp >> 8; | |
457 | *e++ = tmp & 0xff; | |
458 | } | |
3861aa5c | 459 | |
049a95a7 JH |
460 | if (requested_ip.s_addr) { |
461 | int tmp = ntohl(requested_ip.s_addr); | |
3861aa5c | 462 | |
232c150a WD |
463 | *e++ = 50; /* Requested IP */ |
464 | *e++ = 4; | |
465 | *e++ = tmp >> 24; | |
466 | *e++ = tmp >> 16; | |
467 | *e++ = tmp >> 8; | |
468 | *e++ = tmp & 0xff; | |
469 | } | |
1fe80d79 | 470 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
3090b7e3 JH |
471 | hostname = getenv("hostname"); |
472 | if (hostname) { | |
473 | int hostnamelen = strlen(hostname); | |
232c150a WD |
474 | |
475 | *e++ = 12; /* Hostname */ | |
476 | *e++ = hostnamelen; | |
3090b7e3 | 477 | memcpy(e, hostname, hostnamelen); |
232c150a WD |
478 | e += hostnamelen; |
479 | } | |
fe389a82 SR |
480 | #endif |
481 | ||
d2b5d5c4 JH |
482 | #if defined(CONFIG_BOOTP_PXE) |
483 | clientarch = CONFIG_BOOTP_PXE_CLIENTARCH; | |
484 | *e++ = 93; /* Client System Architecture */ | |
485 | *e++ = 2; | |
486 | *e++ = (clientarch >> 8) & 0xff; | |
487 | *e++ = clientarch & 0xff; | |
488 | ||
489 | *e++ = 94; /* Client Network Interface Identifier */ | |
490 | *e++ = 3; | |
491 | *e++ = 1; /* type field for UNDI */ | |
492 | *e++ = 0; /* major revision */ | |
493 | *e++ = 0; /* minor revision */ | |
494 | ||
495 | uuid = getenv("pxeuuid"); | |
496 | ||
497 | if (uuid) { | |
498 | if (uuid_str_valid(uuid)) { | |
499 | *e++ = 97; /* Client Machine Identifier */ | |
500 | *e++ = 17; | |
501 | *e++ = 0; /* type 0 - UUID */ | |
502 | ||
d718ded0 | 503 | uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD); |
d2b5d5c4 JH |
504 | e += 16; |
505 | } else { | |
506 | printf("Invalid pxeuuid: %s\n", uuid); | |
507 | } | |
508 | } | |
9ace17c8 | 509 | #endif |
d2b5d5c4 | 510 | |
214dc1da HP |
511 | #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING) |
512 | put_vci(e, CONFIG_SPL_NET_VCI_STRING); | |
513 | #elif defined(CONFIG_BOOTP_VCI_STRING) | |
9ace17c8 | 514 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
d2b5d5c4 JH |
515 | #endif |
516 | ||
1fe80d79 | 517 | #if defined(CONFIG_BOOTP_VENDOREX) |
3090b7e3 JH |
518 | x = dhcp_vendorex_prep(e); |
519 | if (x) | |
232c150a | 520 | return x - start; |
3861aa5c WD |
521 | #endif |
522 | ||
232c150a WD |
523 | *e++ = 55; /* Parameter Request List */ |
524 | cnt = e++; /* Pointer to count of requested items */ | |
525 | *cnt = 0; | |
1fe80d79 | 526 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
527 | *e++ = 1; /* Subnet Mask */ |
528 | *cnt += 1; | |
3861aa5c | 529 | #endif |
1fe80d79 | 530 | #if defined(CONFIG_BOOTP_TIMEOFFSET) |
ea287deb WD |
531 | *e++ = 2; |
532 | *cnt += 1; | |
533 | #endif | |
1fe80d79 | 534 | #if defined(CONFIG_BOOTP_GATEWAY) |
232c150a WD |
535 | *e++ = 3; /* Router Option */ |
536 | *cnt += 1; | |
3861aa5c | 537 | #endif |
1fe80d79 | 538 | #if defined(CONFIG_BOOTP_DNS) |
232c150a WD |
539 | *e++ = 6; /* DNS Server(s) */ |
540 | *cnt += 1; | |
3861aa5c | 541 | #endif |
1fe80d79 | 542 | #if defined(CONFIG_BOOTP_HOSTNAME) |
232c150a WD |
543 | *e++ = 12; /* Hostname */ |
544 | *cnt += 1; | |
3861aa5c | 545 | #endif |
1fe80d79 | 546 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
232c150a WD |
547 | *e++ = 13; /* Boot File Size */ |
548 | *cnt += 1; | |
3861aa5c | 549 | #endif |
1fe80d79 | 550 | #if defined(CONFIG_BOOTP_BOOTPATH) |
232c150a WD |
551 | *e++ = 17; /* Boot path */ |
552 | *cnt += 1; | |
3861aa5c | 553 | #endif |
1fe80d79 | 554 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
232c150a WD |
555 | *e++ = 40; /* NIS Domain name request */ |
556 | *cnt += 1; | |
ea287deb | 557 | #endif |
1fe80d79 | 558 | #if defined(CONFIG_BOOTP_NTPSERVER) |
ea287deb WD |
559 | *e++ = 42; |
560 | *cnt += 1; | |
3861aa5c | 561 | #endif |
258ccd68 JL |
562 | /* no options, so back up to avoid sending an empty request list */ |
563 | if (*cnt == 0) | |
564 | e -= 2; | |
565 | ||
232c150a | 566 | *e++ = 255; /* End of the list */ |
3861aa5c | 567 | |
232c150a | 568 | /* Pad to minimal length */ |
3861aa5c | 569 | #ifdef CONFIG_DHCP_MIN_EXT_LEN |
21076f61 | 570 | while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN) |
232c150a | 571 | *e++ = 0; |
3861aa5c WD |
572 | #endif |
573 | ||
232c150a | 574 | return e - start; |
3861aa5c WD |
575 | } |
576 | ||
610f2e9c | 577 | #else |
3861aa5c | 578 | /* |
3090b7e3 | 579 | * Warning: no field size check - change CONFIG_BOOTP_* at your own risk! |
3861aa5c | 580 | */ |
049a95a7 | 581 | static int bootp_extended(u8 *e) |
3861aa5c | 582 | { |
232c150a | 583 | u8 *start = e; |
3861aa5c | 584 | |
232c150a WD |
585 | *e++ = 99; /* RFC1048 Magic Cookie */ |
586 | *e++ = 130; | |
587 | *e++ = 83; | |
588 | *e++ = 99; | |
3861aa5c | 589 | |
643d1ab2 | 590 | #if defined(CONFIG_CMD_DHCP) |
232c150a WD |
591 | *e++ = 53; /* DHCP Message Type */ |
592 | *e++ = 1; | |
593 | *e++ = DHCP_DISCOVER; | |
594 | ||
595 | *e++ = 57; /* Maximum DHCP Message Size */ | |
596 | *e++ = 2; | |
f8315731 JH |
597 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16; |
598 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; | |
610f2e9c | 599 | #endif |
3861aa5c | 600 | |
7ac2fe2d IY |
601 | #if defined(CONFIG_BOOTP_VCI_STRING) || \ |
602 | (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING)) | |
603 | #ifdef CONFIG_SPL_BUILD | |
604 | put_vci(e, CONFIG_SPL_NET_VCI_STRING); | |
605 | #else | |
9ace17c8 IY |
606 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
607 | #endif | |
7ac2fe2d | 608 | #endif |
9ace17c8 | 609 | |
1fe80d79 | 610 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
611 | *e++ = 1; /* Subnet mask request */ |
612 | *e++ = 4; | |
613 | e += 4; | |
3861aa5c WD |
614 | #endif |
615 | ||
1fe80d79 | 616 | #if defined(CONFIG_BOOTP_GATEWAY) |
232c150a WD |
617 | *e++ = 3; /* Default gateway request */ |
618 | *e++ = 4; | |
619 | e += 4; | |
3861aa5c WD |
620 | #endif |
621 | ||
1fe80d79 | 622 | #if defined(CONFIG_BOOTP_DNS) |
232c150a WD |
623 | *e++ = 6; /* Domain Name Server */ |
624 | *e++ = 4; | |
625 | e += 4; | |
3861aa5c WD |
626 | #endif |
627 | ||
1fe80d79 | 628 | #if defined(CONFIG_BOOTP_HOSTNAME) |
232c150a WD |
629 | *e++ = 12; /* Host name request */ |
630 | *e++ = 32; | |
631 | e += 32; | |
3861aa5c WD |
632 | #endif |
633 | ||
1fe80d79 | 634 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
232c150a WD |
635 | *e++ = 13; /* Boot file size */ |
636 | *e++ = 2; | |
637 | e += 2; | |
3861aa5c WD |
638 | #endif |
639 | ||
1fe80d79 | 640 | #if defined(CONFIG_BOOTP_BOOTPATH) |
232c150a WD |
641 | *e++ = 17; /* Boot path */ |
642 | *e++ = 32; | |
643 | e += 32; | |
3861aa5c WD |
644 | #endif |
645 | ||
1fe80d79 | 646 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
232c150a WD |
647 | *e++ = 40; /* NIS Domain name request */ |
648 | *e++ = 32; | |
649 | e += 32; | |
3861aa5c | 650 | #endif |
09e3a67d LP |
651 | #if defined(CONFIG_BOOTP_NTPSERVER) |
652 | *e++ = 42; | |
653 | *e++ = 4; | |
654 | e += 4; | |
655 | #endif | |
3861aa5c | 656 | |
232c150a | 657 | *e++ = 255; /* End of the list */ |
3861aa5c | 658 | |
232c150a | 659 | return e - start; |
3861aa5c | 660 | } |
610f2e9c | 661 | #endif |
3861aa5c | 662 | |
7044c6bb | 663 | void bootp_reset(void) |
f59be6e8 | 664 | { |
92ac8acc | 665 | bootp_num_ids = 0; |
7044c6bb | 666 | bootp_try = 0; |
f59be6e8 | 667 | bootp_start = get_timer(0); |
92ac8acc | 668 | bootp_timeout = 250; |
f59be6e8 SW |
669 | } |
670 | ||
7044c6bb | 671 | void bootp_request(void) |
3861aa5c | 672 | { |
db288a96 | 673 | uchar *pkt, *iphdr; |
7044c6bb | 674 | struct bootp_hdr *bp; |
ae446f56 JH |
675 | int extlen, pktlen, iplen; |
676 | int eth_hdr_size; | |
eafc8db0 | 677 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
8e8d73b4 | 678 | ulong rand_ms; |
eafc8db0 | 679 | #endif |
5917e7d1 | 680 | u32 bootp_id; |
049a95a7 JH |
681 | struct in_addr zero_ip; |
682 | struct in_addr bcast_ip; | |
50768f5b | 683 | char *ep; /* Environment pointer */ |
3861aa5c | 684 | |
573f14fe | 685 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start"); |
643d1ab2 | 686 | #if defined(CONFIG_CMD_DHCP) |
3861aa5c WD |
687 | dhcp_state = INIT; |
688 | #endif | |
689 | ||
50768f5b AM |
690 | ep = getenv("bootpretryperiod"); |
691 | if (ep != NULL) | |
692 | time_taken_max = simple_strtoul(ep, NULL, 10); | |
693 | else | |
694 | time_taken_max = TIMEOUT_MS; | |
695 | ||
3861aa5c | 696 | #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ |
7044c6bb | 697 | if (bootp_try == 0) |
eafc8db0 | 698 | srand_mac(); |
3861aa5c | 699 | |
7044c6bb JH |
700 | if (bootp_try <= 2) /* Start with max 1024 * 1ms */ |
701 | rand_ms = rand() >> (22 - bootp_try); | |
eafc8db0 JH |
702 | else /* After 3rd BOOTP request max 8192 * 1ms */ |
703 | rand_ms = rand() >> 19; | |
3861aa5c | 704 | |
eafc8db0 | 705 | printf("Random delay: %ld ms...\n", rand_ms); |
8e8d73b4 | 706 | mdelay(rand_ms); |
3090b7e3 | 707 | |
3861aa5c WD |
708 | #endif /* CONFIG_BOOTP_RANDOM_DELAY */ |
709 | ||
7044c6bb | 710 | printf("BOOTP broadcast %d\n", ++bootp_try); |
1203fcce | 711 | pkt = net_tx_packet; |
3090b7e3 | 712 | memset((void *)pkt, 0, PKTSIZE); |
3861aa5c | 713 | |
1203fcce | 714 | eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); |
ae446f56 | 715 | pkt += eth_hdr_size; |
3861aa5c WD |
716 | |
717 | /* | |
3090b7e3 JH |
718 | * Next line results in incorrect packet size being transmitted, |
719 | * resulting in errors in some DHCP servers, reporting missing bytes. | |
720 | * Size must be set in packet header after extension length has been | |
721 | * determined. | |
3861aa5c WD |
722 | * C. Hallinan, DS4.COM, Inc. |
723 | */ | |
4b11c916 | 724 | /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, |
7044c6bb | 725 | sizeof (struct bootp_hdr)); */ |
4b11c916 | 726 | iphdr = pkt; /* We need this later for net_set_udp_header() */ |
594c26f8 | 727 | pkt += IP_UDP_HDR_SIZE; |
3861aa5c | 728 | |
7044c6bb | 729 | bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
730 | bp->bp_op = OP_BOOTREQUEST; |
731 | bp->bp_htype = HWT_ETHER; | |
732 | bp->bp_hlen = HWL_ETHER; | |
733 | bp->bp_hops = 0; | |
454d9d3e SB |
734 | /* |
735 | * according to RFC1542, should be 0 on first request, secs since | |
736 | * first request otherwise | |
737 | */ | |
738 | bp->bp_secs = htons(get_timer(bootp_start) / 1000); | |
049a95a7 JH |
739 | zero_ip.s_addr = 0; |
740 | net_write_ip(&bp->bp_ciaddr, zero_ip); | |
741 | net_write_ip(&bp->bp_yiaddr, zero_ip); | |
742 | net_write_ip(&bp->bp_siaddr, zero_ip); | |
743 | net_write_ip(&bp->bp_giaddr, zero_ip); | |
0adb5b76 | 744 | memcpy(bp->bp_chaddr, net_ethaddr, 6); |
1411157d | 745 | copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); |
3861aa5c WD |
746 | |
747 | /* Request additional information from the BOOTP/DHCP server */ | |
643d1ab2 | 748 | #if defined(CONFIG_CMD_DHCP) |
049a95a7 JH |
749 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip, |
750 | zero_ip); | |
3861aa5c | 751 | #else |
049a95a7 | 752 | extlen = bootp_extended((u8 *)bp->bp_vend); |
610f2e9c | 753 | #endif |
3861aa5c WD |
754 | |
755 | /* | |
756 | * Bootp ID is the lower 4 bytes of our ethernet address | |
49f3bdbb | 757 | * plus the current time in ms. |
3861aa5c | 758 | */ |
5917e7d1 ST |
759 | bootp_id = ((u32)net_ethaddr[2] << 24) |
760 | | ((u32)net_ethaddr[3] << 16) | |
761 | | ((u32)net_ethaddr[4] << 8) | |
762 | | (u32)net_ethaddr[5]; | |
7044c6bb JH |
763 | bootp_id += get_timer(0); |
764 | bootp_id = htonl(bootp_id); | |
765 | bootp_add_id(bootp_id); | |
5917e7d1 | 766 | net_copy_u32(&bp->bp_id, &bootp_id); |
3861aa5c WD |
767 | |
768 | /* | |
769 | * Calculate proper packet lengths taking into account the | |
770 | * variable size of the options field | |
771 | */ | |
ae446f56 JH |
772 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
773 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; | |
049a95a7 JH |
774 | bcast_ip.s_addr = 0xFFFFFFFFL; |
775 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
bc0571fc | 776 | net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); |
3861aa5c | 777 | |
643d1ab2 | 778 | #if defined(CONFIG_CMD_DHCP) |
3861aa5c | 779 | dhcp_state = SELECTING; |
049a95a7 | 780 | net_set_udp_handler(dhcp_handler); |
3861aa5c | 781 | #else |
049a95a7 | 782 | net_set_udp_handler(bootp_handler); |
610f2e9c | 783 | #endif |
1203fcce | 784 | net_send_packet(net_tx_packet, pktlen); |
3861aa5c WD |
785 | } |
786 | ||
643d1ab2 | 787 | #if defined(CONFIG_CMD_DHCP) |
774c3e05 | 788 | static void dhcp_process_options(uchar *popt, uchar *end) |
3861aa5c | 789 | { |
3861aa5c | 790 | int oplen, size; |
d8d8724b WD |
791 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
792 | int *to_ptr; | |
793 | #endif | |
3861aa5c | 794 | |
232c150a | 795 | while (popt < end && *popt != 0xff) { |
3861aa5c | 796 | oplen = *(popt + 1); |
232c150a | 797 | switch (*popt) { |
c56eb573 SB |
798 | case 0: |
799 | oplen = -1; /* Pad omits len byte */ | |
800 | break; | |
232c150a | 801 | case 1: |
049a95a7 | 802 | net_copy_ip(&net_netmask, (popt + 2)); |
232c150a | 803 | break; |
1fe80d79 | 804 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
ea287deb | 805 | case 2: /* Time offset */ |
bc0571fc | 806 | to_ptr = &net_ntp_time_offset; |
5917e7d1 | 807 | net_copy_u32((u32 *)to_ptr, (u32 *)(popt + 2)); |
bc0571fc | 808 | net_ntp_time_offset = ntohl(net_ntp_time_offset); |
ea287deb WD |
809 | break; |
810 | #endif | |
232c150a | 811 | case 3: |
049a95a7 | 812 | net_copy_ip(&net_gateway, (popt + 2)); |
232c150a WD |
813 | break; |
814 | case 6: | |
049a95a7 | 815 | net_copy_ip(&net_dns_server, (popt + 2)); |
1fe80d79 | 816 | #if defined(CONFIG_BOOTP_DNS2) |
3090b7e3 | 817 | if (*(popt + 1) > 4) |
049a95a7 | 818 | net_copy_ip(&net_dns_server2, (popt + 2 + 4)); |
fe389a82 | 819 | #endif |
232c150a WD |
820 | break; |
821 | case 12: | |
3090b7e3 | 822 | size = truncate_sz("Host Name", |
586cbe51 JH |
823 | sizeof(net_hostname), oplen); |
824 | memcpy(&net_hostname, popt + 2, size); | |
825 | net_hostname[size] = 0; | |
232c150a WD |
826 | break; |
827 | case 15: /* Ignore Domain Name Option */ | |
828 | break; | |
829 | case 17: | |
3090b7e3 | 830 | size = truncate_sz("Root Path", |
586cbe51 JH |
831 | sizeof(net_root_path), oplen); |
832 | memcpy(&net_root_path, popt + 2, size); | |
833 | net_root_path[size] = 0; | |
232c150a | 834 | break; |
ee0f60df BR |
835 | case 28: /* Ignore Broadcast Address Option */ |
836 | break; | |
1fe80d79 | 837 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
ea287deb | 838 | case 42: /* NTP server IP */ |
049a95a7 | 839 | net_copy_ip(&net_ntp_server, (popt + 2)); |
ea287deb WD |
840 | break; |
841 | #endif | |
232c150a | 842 | case 51: |
5917e7d1 | 843 | net_copy_u32(&dhcp_leasetime, (u32 *)(popt + 2)); |
232c150a | 844 | break; |
ec87b1b3 SB |
845 | case 52: |
846 | dhcp_option_overload = popt[2]; | |
847 | break; | |
232c150a WD |
848 | case 53: /* Ignore Message Type Option */ |
849 | break; | |
850 | case 54: | |
049a95a7 | 851 | net_copy_ip(&dhcp_server_ip, (popt + 2)); |
232c150a WD |
852 | break; |
853 | case 58: /* Ignore Renewal Time Option */ | |
854 | break; | |
855 | case 59: /* Ignore Rebinding Time Option */ | |
856 | break; | |
3b2e4fd9 WD |
857 | case 66: /* Ignore TFTP server name */ |
858 | break; | |
ec87b1b3 SB |
859 | case 67: /* Bootfile option */ |
860 | size = truncate_sz("Bootfile", | |
861 | sizeof(net_boot_file_name), oplen); | |
862 | memcpy(&net_boot_file_name, popt + 2, size); | |
863 | net_boot_file_name[size] = 0; | |
3b2e4fd9 | 864 | break; |
232c150a | 865 | default: |
1fe80d79 | 866 | #if defined(CONFIG_BOOTP_VENDOREX) |
3090b7e3 | 867 | if (dhcp_vendorex_proc(popt)) |
8bde7f77 | 868 | break; |
3861aa5c | 869 | #endif |
3090b7e3 | 870 | printf("*** Unhandled DHCP Option in OFFER/ACK:" |
7044c6bb | 871 | " %d\n", *popt); |
232c150a | 872 | break; |
3861aa5c WD |
873 | } |
874 | popt += oplen + 2; /* Process next option */ | |
875 | } | |
876 | } | |
877 | ||
774c3e05 SB |
878 | static void dhcp_packet_process_options(struct bootp_hdr *bp) |
879 | { | |
880 | uchar *popt = (uchar *)&bp->bp_vend[4]; | |
881 | uchar *end = popt + BOOTP_HDR_SIZE; | |
882 | ||
883 | if (net_read_u32((u32 *)&bp->bp_vend[0]) != htonl(BOOTP_VENDOR_MAGIC)) | |
884 | return; | |
885 | ||
886 | dhcp_option_overload = 0; | |
887 | ||
888 | /* | |
889 | * The 'options' field MUST be interpreted first, 'file' next, | |
890 | * 'sname' last. | |
891 | */ | |
892 | dhcp_process_options(popt, end); | |
893 | ||
894 | if (dhcp_option_overload & OVERLOAD_FILE) { | |
895 | popt = (uchar *)bp->bp_file; | |
896 | end = popt + sizeof(bp->bp_file); | |
897 | dhcp_process_options(popt, end); | |
898 | } | |
899 | ||
900 | if (dhcp_option_overload & OVERLOAD_SNAME) { | |
901 | popt = (uchar *)bp->bp_sname; | |
902 | end = popt + sizeof(bp->bp_sname); | |
903 | dhcp_process_options(popt, end); | |
904 | } | |
905 | } | |
906 | ||
7044c6bb | 907 | static int dhcp_message_type(unsigned char *popt) |
3861aa5c | 908 | { |
5917e7d1 | 909 | if (net_read_u32((u32 *)popt) != htonl(BOOTP_VENDOR_MAGIC)) |
3861aa5c WD |
910 | return -1; |
911 | ||
912 | popt += 4; | |
3090b7e3 JH |
913 | while (*popt != 0xff) { |
914 | if (*popt == 53) /* DHCP Message Type */ | |
3861aa5c | 915 | return *(popt + 2); |
c56eb573 SB |
916 | if (*popt == 0) { |
917 | /* Pad */ | |
918 | popt += 1; | |
919 | } else { | |
920 | /* Scan through all options */ | |
921 | popt += *(popt + 1) + 2; | |
922 | } | |
3861aa5c WD |
923 | } |
924 | return -1; | |
925 | } | |
926 | ||
7044c6bb | 927 | static void dhcp_send_request_packet(struct bootp_hdr *bp_offer) |
3861aa5c | 928 | { |
db288a96 | 929 | uchar *pkt, *iphdr; |
7044c6bb | 930 | struct bootp_hdr *bp; |
3861aa5c | 931 | int pktlen, iplen, extlen; |
ae446f56 | 932 | int eth_hdr_size; |
049a95a7 JH |
933 | struct in_addr offered_ip; |
934 | struct in_addr zero_ip; | |
935 | struct in_addr bcast_ip; | |
3861aa5c | 936 | |
7044c6bb | 937 | debug("dhcp_send_request_packet: Sending DHCPREQUEST\n"); |
1203fcce | 938 | pkt = net_tx_packet; |
3090b7e3 | 939 | memset((void *)pkt, 0, PKTSIZE); |
3861aa5c | 940 | |
1203fcce | 941 | eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); |
ae446f56 | 942 | pkt += eth_hdr_size; |
3861aa5c | 943 | |
3090b7e3 | 944 | iphdr = pkt; /* We'll need this later to set proper pkt size */ |
594c26f8 | 945 | pkt += IP_UDP_HDR_SIZE; |
3861aa5c | 946 | |
7044c6bb | 947 | bp = (struct bootp_hdr *)pkt; |
3861aa5c WD |
948 | bp->bp_op = OP_BOOTREQUEST; |
949 | bp->bp_htype = HWT_ETHER; | |
950 | bp->bp_hlen = HWL_ETHER; | |
951 | bp->bp_hops = 0; | |
454d9d3e | 952 | bp->bp_secs = htons(get_timer(bootp_start) / 1000); |
3090b7e3 JH |
953 | /* Do not set the client IP, your IP, or server IP yet, since it |
954 | * hasn't been ACK'ed by the server yet */ | |
e5c794e4 | 955 | |
c6686703 | 956 | /* |
d82718fe WD |
957 | * RFC3046 requires Relay Agents to discard packets with |
958 | * nonzero and offered giaddr | |
959 | */ | |
049a95a7 JH |
960 | zero_ip.s_addr = 0; |
961 | net_write_ip(&bp->bp_giaddr, zero_ip); | |
d82718fe | 962 | |
0adb5b76 | 963 | memcpy(bp->bp_chaddr, net_ethaddr, 6); |
b2b7fbc3 | 964 | copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); |
3861aa5c WD |
965 | |
966 | /* | |
967 | * ID is the id of the OFFER packet | |
968 | */ | |
969 | ||
5917e7d1 | 970 | net_copy_u32(&bp->bp_id, &bp_offer->bp_id); |
3861aa5c WD |
971 | |
972 | /* | |
973 | * Copy options from OFFER packet if present | |
974 | */ | |
e5c794e4 JF |
975 | |
976 | /* Copy offered IP into the parameters request list */ | |
049a95a7 JH |
977 | net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr); |
978 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST, | |
979 | dhcp_server_ip, offered_ip); | |
3861aa5c | 980 | |
ae446f56 JH |
981 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
982 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; | |
049a95a7 JH |
983 | bcast_ip.s_addr = 0xFFFFFFFFL; |
984 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
3861aa5c | 985 | |
d9a2f416 AV |
986 | #ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY |
987 | udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY); | |
988 | #endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */ | |
f9623229 | 989 | debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen); |
1203fcce | 990 | net_send_packet(net_tx_packet, pktlen); |
3861aa5c WD |
991 | } |
992 | ||
993 | /* | |
994 | * Handle DHCP received packets. | |
995 | */ | |
049a95a7 JH |
996 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
997 | unsigned src, unsigned len) | |
3861aa5c | 998 | { |
7044c6bb | 999 | struct bootp_hdr *bp = (struct bootp_hdr *)pkt; |
3861aa5c | 1000 | |
0ebf04c6 | 1001 | debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", |
7044c6bb | 1002 | src, dest, len, dhcp_state); |
3861aa5c | 1003 | |
3090b7e3 | 1004 | /* Filter out pkts we don't want */ |
867d6ae2 | 1005 | if (check_reply_packet(pkt, dest, src, len)) |
3861aa5c WD |
1006 | return; |
1007 | ||
7044c6bb JH |
1008 | debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: " |
1009 | "%d\n", src, dest, len, dhcp_state); | |
3861aa5c | 1010 | |
44c42dd4 PF |
1011 | if (net_read_ip(&bp->bp_yiaddr).s_addr == 0) |
1012 | return; | |
1013 | ||
3861aa5c WD |
1014 | switch (dhcp_state) { |
1015 | case SELECTING: | |
1016 | /* | |
1017 | * Wait an appropriate time for any potential DHCPOFFER packets | |
3090b7e3 JH |
1018 | * to arrive. Then select one, and generate DHCPREQUEST |
1019 | * response. If filename is in format we recognize, assume it | |
1020 | * is a valid OFFER from a server we want. | |
3861aa5c | 1021 | */ |
0ebf04c6 | 1022 | debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file); |
6d0f6bcf | 1023 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
3861aa5c | 1024 | if (strncmp(bp->bp_file, |
6d0f6bcf | 1025 | CONFIG_SYS_BOOTFILE_PREFIX, |
3090b7e3 | 1026 | strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) { |
6d0f6bcf | 1027 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
774c3e05 | 1028 | dhcp_packet_process_options(bp); |
0efe1bcf | 1029 | efi_net_set_dhcp_ack(pkt, len); |
3861aa5c | 1030 | |
0ebf04c6 | 1031 | debug("TRANSITIONING TO REQUESTING STATE\n"); |
3861aa5c | 1032 | dhcp_state = REQUESTING; |
759a51b4 | 1033 | |
bc0571fc | 1034 | net_set_timeout_handler(5000, bootp_timeout_handler); |
7044c6bb | 1035 | dhcp_send_request_packet(bp); |
6d0f6bcf | 1036 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
3861aa5c | 1037 | } |
6d0f6bcf | 1038 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
3861aa5c WD |
1039 | |
1040 | return; | |
1041 | break; | |
1042 | case REQUESTING: | |
0ebf04c6 | 1043 | debug("DHCP State: REQUESTING\n"); |
3861aa5c | 1044 | |
7044c6bb | 1045 | if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) { |
774c3e05 | 1046 | dhcp_packet_process_options(bp); |
3090b7e3 | 1047 | /* Store net params from reply */ |
7044c6bb | 1048 | store_net_params(bp); |
3861aa5c | 1049 | dhcp_state = BOUND; |
92ac8acc | 1050 | printf("DHCP client bound to address %pI4 (%lu ms)\n", |
7044c6bb | 1051 | &net_ip, get_timer(bootp_start)); |
4f28c9b1 | 1052 | net_set_timeout_handler(0, (thand_f *)0); |
573f14fe | 1053 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, |
7044c6bb | 1054 | "bootp_stop"); |
3861aa5c | 1055 | |
e4a3d57d | 1056 | net_auto_load(); |
3861aa5c WD |
1057 | return; |
1058 | } | |
1059 | break; | |
51dfe138 RB |
1060 | case BOUND: |
1061 | /* DHCP client bound to address */ | |
1062 | break; | |
3861aa5c | 1063 | default: |
3090b7e3 | 1064 | puts("DHCP: INVALID STATE\n"); |
3861aa5c WD |
1065 | break; |
1066 | } | |
3861aa5c WD |
1067 | } |
1068 | ||
7044c6bb | 1069 | void dhcp_request(void) |
3861aa5c | 1070 | { |
7044c6bb | 1071 | bootp_request(); |
3861aa5c | 1072 | } |
992742a5 | 1073 | #endif /* CONFIG_CMD_DHCP */ |