| | 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 |
| | 8 | * Copyright 2000-2004 Wolfgang Denk, wd@denx.de |
| | 9 | */ |
| | 10 | |
| | 11 | #include <common.h> |
| | 12 | #include <command.h> |
| | 13 | #include <net.h> |
| | 14 | #include <net/tftp.h> |
| | 15 | #include "bootp.h" |
| | 16 | #include "nfs.h" |
| | 17 | #ifdef CONFIG_STATUS_LED |
| | 18 | #include <status_led.h> |
| | 19 | #endif |
| | 20 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
| | 21 | #include "net_rand.h" |
| | 22 | #endif |
| | 23 | |
| | 24 | #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */ |
| | 25 | |
| | 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 | */ |
| | 36 | #ifndef CONFIG_NET_RETRY_COUNT |
| | 37 | # define TIMEOUT_COUNT 5 /* # of timeouts before giving up */ |
| | 38 | #else |
| | 39 | # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT) |
| | 40 | #endif |
| | 41 | #define TIMEOUT_MS ((3 + (TIMEOUT_COUNT * 5)) * 1000) |
| | 42 | |
| | 43 | #define PORT_BOOTPS 67 /* BOOTP server UDP port */ |
| | 44 | #define PORT_BOOTPC 68 /* BOOTP client UDP port */ |
| | 45 | |
| | 46 | #ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */ |
| | 47 | #define CONFIG_DHCP_MIN_EXT_LEN 64 |
| | 48 | #endif |
| | 49 | |
| | 50 | #ifndef CONFIG_BOOTP_ID_CACHE_SIZE |
| | 51 | #define CONFIG_BOOTP_ID_CACHE_SIZE 4 |
| | 52 | #endif |
| | 53 | |
| | 54 | u32 bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE]; |
| | 55 | unsigned int bootp_num_ids; |
| | 56 | int bootp_try; |
| | 57 | ulong bootp_start; |
| | 58 | ulong bootp_timeout; |
| | 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 */ |
| | 62 | |
| | 63 | #if defined(CONFIG_CMD_DHCP) |
| | 64 | static dhcp_state_t dhcp_state = INIT; |
| | 65 | static u32 dhcp_leasetime; |
| | 66 | static struct in_addr dhcp_server_ip; |
| | 67 | static u8 dhcp_option_overload; |
| | 68 | #define OVERLOAD_FILE 1 |
| | 69 | #define OVERLOAD_SNAME 2 |
| | 70 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
| | 71 | unsigned src, unsigned len); |
| | 72 | |
| | 73 | /* For Debug */ |
| | 74 | #if 0 |
| | 75 | static char *dhcpmsg2str(int type) |
| | 76 | { |
| | 77 | switch (type) { |
| | 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; |
| | 85 | default: return "UNKNOWN/INVALID MSG TYPE"; break; |
| | 86 | } |
| | 87 | } |
| | 88 | #endif |
| | 89 | #endif |
| | 90 | |
| | 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 | |
| | 115 | static int check_reply_packet(uchar *pkt, unsigned dest, unsigned src, |
| | 116 | unsigned len) |
| | 117 | { |
| | 118 | struct bootp_hdr *bp = (struct bootp_hdr *)pkt; |
| | 119 | int retval = 0; |
| | 120 | |
| | 121 | if (dest != PORT_BOOTPC || src != PORT_BOOTPS) |
| | 122 | retval = -1; |
| | 123 | else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE) |
| | 124 | retval = -2; |
| | 125 | else if (bp->bp_op != OP_BOOTREPLY) |
| | 126 | retval = -3; |
| | 127 | else if (bp->bp_htype != HWT_ETHER) |
| | 128 | retval = -4; |
| | 129 | else if (bp->bp_hlen != HWL_ETHER) |
| | 130 | retval = -5; |
| | 131 | else if (!bootp_match_id(net_read_u32(&bp->bp_id))) |
| | 132 | retval = -6; |
| | 133 | |
| | 134 | debug("Filtering pkt = %d\n", retval); |
| | 135 | |
| | 136 | return retval; |
| | 137 | } |
| | 138 | |
| | 139 | /* |
| | 140 | * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet |
| | 141 | */ |
| | 142 | static void store_net_params(struct bootp_hdr *bp) |
| | 143 | { |
| | 144 | #if !defined(CONFIG_BOOTP_SERVERIP) |
| | 145 | struct in_addr tmp_ip; |
| | 146 | |
| | 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); |
| | 150 | memcpy(net_server_ethaddr, |
| | 151 | ((struct ethernet_hdr *)net_rx_packet)->et_src, 6); |
| | 152 | if ( |
| | 153 | #if defined(CONFIG_CMD_DHCP) |
| | 154 | !(dhcp_option_overload & OVERLOAD_FILE) && |
| | 155 | #endif |
| | 156 | (strlen(bp->bp_file) > 0)) { |
| | 157 | copy_filename(net_boot_file_name, bp->bp_file, |
| | 158 | sizeof(net_boot_file_name)); |
| | 159 | } |
| | 160 | |
| | 161 | debug("net_boot_file_name: %s\n", net_boot_file_name); |
| | 162 | |
| | 163 | /* Propagate to environment: |
| | 164 | * don't delete exising entry when BOOTP / DHCP reply does |
| | 165 | * not contain a new value |
| | 166 | */ |
| | 167 | if (*net_boot_file_name) |
| | 168 | setenv("bootfile", net_boot_file_name); |
| | 169 | #endif |
| | 170 | net_copy_ip(&net_ip, &bp->bp_yiaddr); |
| | 171 | } |
| | 172 | |
| | 173 | static int truncate_sz(const char *name, int maxlen, int curlen) |
| | 174 | { |
| | 175 | if (curlen >= maxlen) { |
| | 176 | printf("*** WARNING: %s is too long (%d - max: %d)" |
| | 177 | " - truncated\n", name, curlen, maxlen); |
| | 178 | curlen = maxlen - 1; |
| | 179 | } |
| | 180 | return curlen; |
| | 181 | } |
| | 182 | |
| | 183 | #if !defined(CONFIG_CMD_DHCP) |
| | 184 | |
| | 185 | static void bootp_process_vendor_field(u8 *ext) |
| | 186 | { |
| | 187 | int size = *(ext + 1); |
| | 188 | |
| | 189 | debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, |
| | 190 | *(ext + 1)); |
| | 191 | |
| | 192 | net_boot_file_expected_size_in_blocks = 0; |
| | 193 | |
| | 194 | switch (*ext) { |
| | 195 | /* Fixed length fields */ |
| | 196 | case 1: /* Subnet mask */ |
| | 197 | if (net_netmask.s_addr == 0) |
| | 198 | net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2)); |
| | 199 | break; |
| | 200 | case 2: /* Time offset - Not yet supported */ |
| | 201 | break; |
| | 202 | /* Variable length fields */ |
| | 203 | case 3: /* Gateways list */ |
| | 204 | if (net_gateway.s_addr == 0) |
| | 205 | net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2)); |
| | 206 | break; |
| | 207 | case 4: /* Time server - Not yet supported */ |
| | 208 | break; |
| | 209 | case 5: /* IEN-116 name server - Not yet supported */ |
| | 210 | break; |
| | 211 | case 6: |
| | 212 | if (net_dns_server.s_addr == 0) |
| | 213 | net_copy_ip(&net_dns_server, |
| | 214 | (struct in_addr *)(ext + 2)); |
| | 215 | #if defined(CONFIG_BOOTP_DNS2) |
| | 216 | if ((net_dns_server2.s_addr == 0) && (size > 4)) |
| | 217 | net_copy_ip(&net_dns_server2, |
| | 218 | (struct in_addr *)(ext + 2 + 4)); |
| | 219 | #endif |
| | 220 | break; |
| | 221 | case 7: /* Log server - Not yet supported */ |
| | 222 | break; |
| | 223 | case 8: /* Cookie/Quote server - Not yet supported */ |
| | 224 | break; |
| | 225 | case 9: /* LPR server - Not yet supported */ |
| | 226 | break; |
| | 227 | case 10: /* Impress server - Not yet supported */ |
| | 228 | break; |
| | 229 | case 11: /* RPL server - Not yet supported */ |
| | 230 | break; |
| | 231 | case 12: /* Host name */ |
| | 232 | if (net_hostname[0] == 0) { |
| | 233 | size = truncate_sz("Host Name", |
| | 234 | sizeof(net_hostname), size); |
| | 235 | memcpy(&net_hostname, ext + 2, size); |
| | 236 | net_hostname[size] = 0; |
| | 237 | } |
| | 238 | break; |
| | 239 | case 13: /* Boot file size */ |
| | 240 | if (size == 2) |
| | 241 | net_boot_file_expected_size_in_blocks = |
| | 242 | ntohs(*(ushort *)(ext + 2)); |
| | 243 | else if (size == 4) |
| | 244 | net_boot_file_expected_size_in_blocks = |
| | 245 | ntohl(*(ulong *)(ext + 2)); |
| | 246 | break; |
| | 247 | case 14: /* Merit dump file - Not yet supported */ |
| | 248 | break; |
| | 249 | case 15: /* Domain name - Not yet supported */ |
| | 250 | break; |
| | 251 | case 16: /* Swap server - Not yet supported */ |
| | 252 | break; |
| | 253 | case 17: /* Root path */ |
| | 254 | if (net_root_path[0] == 0) { |
| | 255 | size = truncate_sz("Root Path", |
| | 256 | sizeof(net_root_path), size); |
| | 257 | memcpy(&net_root_path, ext + 2, size); |
| | 258 | net_root_path[size] = 0; |
| | 259 | } |
| | 260 | break; |
| | 261 | case 18: /* Extension path - Not yet supported */ |
| | 262 | /* |
| | 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. |
| | 266 | */ |
| | 267 | break; |
| | 268 | /* IP host layer fields */ |
| | 269 | case 40: /* NIS Domain name */ |
| | 270 | if (net_nis_domain[0] == 0) { |
| | 271 | size = truncate_sz("NIS Domain Name", |
| | 272 | sizeof(net_nis_domain), size); |
| | 273 | memcpy(&net_nis_domain, ext + 2, size); |
| | 274 | net_nis_domain[size] = 0; |
| | 275 | } |
| | 276 | break; |
| | 277 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
| | 278 | case 42: /* NTP server IP */ |
| | 279 | net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2)); |
| | 280 | break; |
| | 281 | #endif |
| | 282 | /* Application layer fields */ |
| | 283 | case 43: /* Vendor specific info - Not yet supported */ |
| | 284 | /* |
| | 285 | * Binary information to exchange specific |
| | 286 | * product information. |
| | 287 | */ |
| | 288 | break; |
| | 289 | /* Reserved (custom) fields (128..254) */ |
| | 290 | } |
| | 291 | } |
| | 292 | |
| | 293 | static void bootp_process_vendor(u8 *ext, int size) |
| | 294 | { |
| | 295 | u8 *end = ext + size; |
| | 296 | |
| | 297 | debug("[BOOTP] Checking extension (%d bytes)...\n", size); |
| | 298 | |
| | 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) |
| | 307 | bootp_process_vendor_field(opt); |
| | 308 | } |
| | 309 | } |
| | 310 | |
| | 311 | debug("[BOOTP] Received fields:\n"); |
| | 312 | if (net_netmask.s_addr) |
| | 313 | debug("net_netmask : %pI4\n", &net_netmask); |
| | 314 | |
| | 315 | if (net_gateway.s_addr) |
| | 316 | debug("net_gateway : %pI4", &net_gateway); |
| | 317 | |
| | 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); |
| | 321 | |
| | 322 | if (net_hostname[0]) |
| | 323 | debug("net_hostname : %s\n", net_hostname); |
| | 324 | |
| | 325 | if (net_root_path[0]) |
| | 326 | debug("net_root_path : %s\n", net_root_path); |
| | 327 | |
| | 328 | if (net_nis_domain[0]) |
| | 329 | debug("net_nis_domain : %s\n", net_nis_domain); |
| | 330 | |
| | 331 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
| | 332 | if (net_ntp_server) |
| | 333 | debug("net_ntp_server : %pI4\n", &net_ntp_server); |
| | 334 | #endif |
| | 335 | } |
| | 336 | |
| | 337 | /* |
| | 338 | * Handle a BOOTP received packet. |
| | 339 | */ |
| | 340 | static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
| | 341 | unsigned src, unsigned len) |
| | 342 | { |
| | 343 | struct bootp_hdr *bp; |
| | 344 | |
| | 345 | debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n", |
| | 346 | src, dest, len, sizeof(struct bootp_hdr)); |
| | 347 | |
| | 348 | bp = (struct bootp_hdr *)pkt; |
| | 349 | |
| | 350 | /* Filter out pkts we don't want */ |
| | 351 | if (check_reply_packet(pkt, dest, src, len)) |
| | 352 | return; |
| | 353 | |
| | 354 | /* |
| | 355 | * Got a good BOOTP reply. Copy the data into our variables. |
| | 356 | */ |
| | 357 | #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) |
| | 358 | status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); |
| | 359 | #endif |
| | 360 | |
| | 361 | store_net_params(bp); /* Store net parameters from reply */ |
| | 362 | |
| | 363 | /* Retrieve extended information (we must parse the vendor area) */ |
| | 364 | if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) |
| | 365 | bootp_process_vendor((uchar *)&bp->bp_vend[4], len); |
| | 366 | |
| | 367 | net_set_timeout_handler(0, (thand_f *)0); |
| | 368 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop"); |
| | 369 | |
| | 370 | debug("Got good BOOTP\n"); |
| | 371 | |
| | 372 | net_auto_load(); |
| | 373 | } |
| | 374 | #endif |
| | 375 | |
| | 376 | /* |
| | 377 | * Timeout on BOOTP/DHCP request. |
| | 378 | */ |
| | 379 | static void bootp_timeout_handler(void) |
| | 380 | { |
| | 381 | ulong time_taken = get_timer(bootp_start); |
| | 382 | |
| | 383 | if (time_taken >= TIMEOUT_MS) { |
| | 384 | #ifdef CONFIG_BOOTP_MAY_FAIL |
| | 385 | puts("\nRetry time exceeded\n"); |
| | 386 | net_set_state(NETLOOP_FAIL); |
| | 387 | #else |
| | 388 | puts("\nRetry time exceeded; starting again\n"); |
| | 389 | net_start_again(); |
| | 390 | #endif |
| | 391 | } else { |
| | 392 | bootp_timeout *= 2; |
| | 393 | if (bootp_timeout > 2000) |
| | 394 | bootp_timeout = 2000; |
| | 395 | net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); |
| | 396 | bootp_request(); |
| | 397 | } |
| | 398 | } |
| | 399 | |
| | 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 | |
| | 409 | /* |
| | 410 | * Initialize BOOTP extension fields in the request. |
| | 411 | */ |
| | 412 | #if defined(CONFIG_CMD_DHCP) |
| | 413 | static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip, |
| | 414 | struct in_addr requested_ip) |
| | 415 | { |
| | 416 | u8 *start = e; |
| | 417 | u8 *cnt; |
| | 418 | #if defined(CONFIG_BOOTP_PXE) |
| | 419 | char *uuid; |
| | 420 | u16 clientarch; |
| | 421 | #endif |
| | 422 | |
| | 423 | #if defined(CONFIG_BOOTP_VENDOREX) |
| | 424 | u8 *x; |
| | 425 | #endif |
| | 426 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
| | 427 | char *hostname; |
| | 428 | #endif |
| | 429 | |
| | 430 | *e++ = 99; /* RFC1048 Magic Cookie */ |
| | 431 | *e++ = 130; |
| | 432 | *e++ = 83; |
| | 433 | *e++ = 99; |
| | 434 | |
| | 435 | *e++ = 53; /* DHCP Message Type */ |
| | 436 | *e++ = 1; |
| | 437 | *e++ = message_type; |
| | 438 | |
| | 439 | *e++ = 57; /* Maximum DHCP Message Size */ |
| | 440 | *e++ = 2; |
| | 441 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8; |
| | 442 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; |
| | 443 | |
| | 444 | if (server_ip.s_addr) { |
| | 445 | int tmp = ntohl(server_ip.s_addr); |
| | 446 | |
| | 447 | *e++ = 54; /* ServerID */ |
| | 448 | *e++ = 4; |
| | 449 | *e++ = tmp >> 24; |
| | 450 | *e++ = tmp >> 16; |
| | 451 | *e++ = tmp >> 8; |
| | 452 | *e++ = tmp & 0xff; |
| | 453 | } |
| | 454 | |
| | 455 | if (requested_ip.s_addr) { |
| | 456 | int tmp = ntohl(requested_ip.s_addr); |
| | 457 | |
| | 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 | } |
| | 465 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
| | 466 | hostname = getenv("hostname"); |
| | 467 | if (hostname) { |
| | 468 | int hostnamelen = strlen(hostname); |
| | 469 | |
| | 470 | *e++ = 12; /* Hostname */ |
| | 471 | *e++ = hostnamelen; |
| | 472 | memcpy(e, hostname, hostnamelen); |
| | 473 | e += hostnamelen; |
| | 474 | } |
| | 475 | #endif |
| | 476 | |
| | 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 | |
| | 498 | uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD); |
| | 499 | e += 16; |
| | 500 | } else { |
| | 501 | printf("Invalid pxeuuid: %s\n", uuid); |
| | 502 | } |
| | 503 | } |
| | 504 | #endif |
| | 505 | |
| | 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) |
| | 509 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
| | 510 | #endif |
| | 511 | |
| | 512 | #if defined(CONFIG_BOOTP_VENDOREX) |
| | 513 | x = dhcp_vendorex_prep(e); |
| | 514 | if (x) |
| | 515 | return x - start; |
| | 516 | #endif |
| | 517 | |
| | 518 | *e++ = 55; /* Parameter Request List */ |
| | 519 | cnt = e++; /* Pointer to count of requested items */ |
| | 520 | *cnt = 0; |
| | 521 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
| | 522 | *e++ = 1; /* Subnet Mask */ |
| | 523 | *cnt += 1; |
| | 524 | #endif |
| | 525 | #if defined(CONFIG_BOOTP_TIMEOFFSET) |
| | 526 | *e++ = 2; |
| | 527 | *cnt += 1; |
| | 528 | #endif |
| | 529 | #if defined(CONFIG_BOOTP_GATEWAY) |
| | 530 | *e++ = 3; /* Router Option */ |
| | 531 | *cnt += 1; |
| | 532 | #endif |
| | 533 | #if defined(CONFIG_BOOTP_DNS) |
| | 534 | *e++ = 6; /* DNS Server(s) */ |
| | 535 | *cnt += 1; |
| | 536 | #endif |
| | 537 | #if defined(CONFIG_BOOTP_HOSTNAME) |
| | 538 | *e++ = 12; /* Hostname */ |
| | 539 | *cnt += 1; |
| | 540 | #endif |
| | 541 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
| | 542 | *e++ = 13; /* Boot File Size */ |
| | 543 | *cnt += 1; |
| | 544 | #endif |
| | 545 | #if defined(CONFIG_BOOTP_BOOTPATH) |
| | 546 | *e++ = 17; /* Boot path */ |
| | 547 | *cnt += 1; |
| | 548 | #endif |
| | 549 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
| | 550 | *e++ = 40; /* NIS Domain name request */ |
| | 551 | *cnt += 1; |
| | 552 | #endif |
| | 553 | #if defined(CONFIG_BOOTP_NTPSERVER) |
| | 554 | *e++ = 42; |
| | 555 | *cnt += 1; |
| | 556 | #endif |
| | 557 | /* no options, so back up to avoid sending an empty request list */ |
| | 558 | if (*cnt == 0) |
| | 559 | e -= 2; |
| | 560 | |
| | 561 | *e++ = 255; /* End of the list */ |
| | 562 | |
| | 563 | /* Pad to minimal length */ |
| | 564 | #ifdef CONFIG_DHCP_MIN_EXT_LEN |
| | 565 | while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN) |
| | 566 | *e++ = 0; |
| | 567 | #endif |
| | 568 | |
| | 569 | return e - start; |
| | 570 | } |
| | 571 | |
| | 572 | #else |
| | 573 | /* |
| | 574 | * Warning: no field size check - change CONFIG_BOOTP_* at your own risk! |
| | 575 | */ |
| | 576 | static int bootp_extended(u8 *e) |
| | 577 | { |
| | 578 | u8 *start = e; |
| | 579 | |
| | 580 | *e++ = 99; /* RFC1048 Magic Cookie */ |
| | 581 | *e++ = 130; |
| | 582 | *e++ = 83; |
| | 583 | *e++ = 99; |
| | 584 | |
| | 585 | #if defined(CONFIG_CMD_DHCP) |
| | 586 | *e++ = 53; /* DHCP Message Type */ |
| | 587 | *e++ = 1; |
| | 588 | *e++ = DHCP_DISCOVER; |
| | 589 | |
| | 590 | *e++ = 57; /* Maximum DHCP Message Size */ |
| | 591 | *e++ = 2; |
| | 592 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16; |
| | 593 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; |
| | 594 | #endif |
| | 595 | |
| | 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 |
| | 601 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
| | 602 | #endif |
| | 603 | #endif |
| | 604 | |
| | 605 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
| | 606 | *e++ = 1; /* Subnet mask request */ |
| | 607 | *e++ = 4; |
| | 608 | e += 4; |
| | 609 | #endif |
| | 610 | |
| | 611 | #if defined(CONFIG_BOOTP_GATEWAY) |
| | 612 | *e++ = 3; /* Default gateway request */ |
| | 613 | *e++ = 4; |
| | 614 | e += 4; |
| | 615 | #endif |
| | 616 | |
| | 617 | #if defined(CONFIG_BOOTP_DNS) |
| | 618 | *e++ = 6; /* Domain Name Server */ |
| | 619 | *e++ = 4; |
| | 620 | e += 4; |
| | 621 | #endif |
| | 622 | |
| | 623 | #if defined(CONFIG_BOOTP_HOSTNAME) |
| | 624 | *e++ = 12; /* Host name request */ |
| | 625 | *e++ = 32; |
| | 626 | e += 32; |
| | 627 | #endif |
| | 628 | |
| | 629 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
| | 630 | *e++ = 13; /* Boot file size */ |
| | 631 | *e++ = 2; |
| | 632 | e += 2; |
| | 633 | #endif |
| | 634 | |
| | 635 | #if defined(CONFIG_BOOTP_BOOTPATH) |
| | 636 | *e++ = 17; /* Boot path */ |
| | 637 | *e++ = 32; |
| | 638 | e += 32; |
| | 639 | #endif |
| | 640 | |
| | 641 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
| | 642 | *e++ = 40; /* NIS Domain name request */ |
| | 643 | *e++ = 32; |
| | 644 | e += 32; |
| | 645 | #endif |
| | 646 | #if defined(CONFIG_BOOTP_NTPSERVER) |
| | 647 | *e++ = 42; |
| | 648 | *e++ = 4; |
| | 649 | e += 4; |
| | 650 | #endif |
| | 651 | |
| | 652 | *e++ = 255; /* End of the list */ |
| | 653 | |
| | 654 | return e - start; |
| | 655 | } |
| | 656 | #endif |
| | 657 | |
| | 658 | void bootp_reset(void) |
| | 659 | { |
| | 660 | bootp_num_ids = 0; |
| | 661 | bootp_try = 0; |
| | 662 | bootp_start = get_timer(0); |
| | 663 | bootp_timeout = 250; |
| | 664 | } |
| | 665 | |
| | 666 | void bootp_request(void) |
| | 667 | { |
| | 668 | uchar *pkt, *iphdr; |
| | 669 | struct bootp_hdr *bp; |
| | 670 | int extlen, pktlen, iplen; |
| | 671 | int eth_hdr_size; |
| | 672 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
| | 673 | ulong rand_ms; |
| | 674 | #endif |
| | 675 | u32 bootp_id; |
| | 676 | struct in_addr zero_ip; |
| | 677 | struct in_addr bcast_ip; |
| | 678 | |
| | 679 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start"); |
| | 680 | #if defined(CONFIG_CMD_DHCP) |
| | 681 | dhcp_state = INIT; |
| | 682 | #endif |
| | 683 | |
| | 684 | #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ |
| | 685 | if (bootp_try == 0) |
| | 686 | srand_mac(); |
| | 687 | |
| | 688 | if (bootp_try <= 2) /* Start with max 1024 * 1ms */ |
| | 689 | rand_ms = rand() >> (22 - bootp_try); |
| | 690 | else /* After 3rd BOOTP request max 8192 * 1ms */ |
| | 691 | rand_ms = rand() >> 19; |
| | 692 | |
| | 693 | printf("Random delay: %ld ms...\n", rand_ms); |
| | 694 | mdelay(rand_ms); |
| | 695 | |
| | 696 | #endif /* CONFIG_BOOTP_RANDOM_DELAY */ |
| | 697 | |
| | 698 | printf("BOOTP broadcast %d\n", ++bootp_try); |
| | 699 | pkt = net_tx_packet; |
| | 700 | memset((void *)pkt, 0, PKTSIZE); |
| | 701 | |
| | 702 | eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); |
| | 703 | pkt += eth_hdr_size; |
| | 704 | |
| | 705 | /* |
| | 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. |
| | 710 | * C. Hallinan, DS4.COM, Inc. |
| | 711 | */ |
| | 712 | /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, |
| | 713 | sizeof (struct bootp_hdr)); */ |
| | 714 | iphdr = pkt; /* We need this later for net_set_udp_header() */ |
| | 715 | pkt += IP_UDP_HDR_SIZE; |
| | 716 | |
| | 717 | bp = (struct bootp_hdr *)pkt; |
| | 718 | bp->bp_op = OP_BOOTREQUEST; |
| | 719 | bp->bp_htype = HWT_ETHER; |
| | 720 | bp->bp_hlen = HWL_ETHER; |
| | 721 | bp->bp_hops = 0; |
| | 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); |
| | 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); |
| | 732 | memcpy(bp->bp_chaddr, net_ethaddr, 6); |
| | 733 | copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); |
| | 734 | |
| | 735 | /* Request additional information from the BOOTP/DHCP server */ |
| | 736 | #if defined(CONFIG_CMD_DHCP) |
| | 737 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip, |
| | 738 | zero_ip); |
| | 739 | #else |
| | 740 | extlen = bootp_extended((u8 *)bp->bp_vend); |
| | 741 | #endif |
| | 742 | |
| | 743 | /* |
| | 744 | * Bootp ID is the lower 4 bytes of our ethernet address |
| | 745 | * plus the current time in ms. |
| | 746 | */ |
| | 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]; |
| | 751 | bootp_id += get_timer(0); |
| | 752 | bootp_id = htonl(bootp_id); |
| | 753 | bootp_add_id(bootp_id); |
| | 754 | net_copy_u32(&bp->bp_id, &bootp_id); |
| | 755 | |
| | 756 | /* |
| | 757 | * Calculate proper packet lengths taking into account the |
| | 758 | * variable size of the options field |
| | 759 | */ |
| | 760 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
| | 761 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; |
| | 762 | bcast_ip.s_addr = 0xFFFFFFFFL; |
| | 763 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); |
| | 764 | net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); |
| | 765 | |
| | 766 | #if defined(CONFIG_CMD_DHCP) |
| | 767 | dhcp_state = SELECTING; |
| | 768 | net_set_udp_handler(dhcp_handler); |
| | 769 | #else |
| | 770 | net_set_udp_handler(bootp_handler); |
| | 771 | #endif |
| | 772 | net_send_packet(net_tx_packet, pktlen); |
| | 773 | } |
| | 774 | |
| | 775 | #if defined(CONFIG_CMD_DHCP) |
| | 776 | static void dhcp_process_options(uchar *popt, uchar *end) |
| | 777 | { |
| | 778 | int oplen, size; |
| | 779 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
| | 780 | int *to_ptr; |
| | 781 | #endif |
| | 782 | |
| | 783 | while (popt < end && *popt != 0xff) { |
| | 784 | oplen = *(popt + 1); |
| | 785 | switch (*popt) { |
| | 786 | case 0: |
| | 787 | oplen = -1; /* Pad omits len byte */ |
| | 788 | break; |
| | 789 | case 1: |
| | 790 | net_copy_ip(&net_netmask, (popt + 2)); |
| | 791 | break; |
| | 792 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
| | 793 | case 2: /* Time offset */ |
| | 794 | to_ptr = &net_ntp_time_offset; |
| | 795 | net_copy_u32((u32 *)to_ptr, (u32 *)(popt + 2)); |
| | 796 | net_ntp_time_offset = ntohl(net_ntp_time_offset); |
| | 797 | break; |
| | 798 | #endif |
| | 799 | case 3: |
| | 800 | net_copy_ip(&net_gateway, (popt + 2)); |
| | 801 | break; |
| | 802 | case 6: |
| | 803 | net_copy_ip(&net_dns_server, (popt + 2)); |
| | 804 | #if defined(CONFIG_BOOTP_DNS2) |
| | 805 | if (*(popt + 1) > 4) |
| | 806 | net_copy_ip(&net_dns_server2, (popt + 2 + 4)); |
| | 807 | #endif |
| | 808 | break; |
| | 809 | case 12: |
| | 810 | size = truncate_sz("Host Name", |
| | 811 | sizeof(net_hostname), oplen); |
| | 812 | memcpy(&net_hostname, popt + 2, size); |
| | 813 | net_hostname[size] = 0; |
| | 814 | break; |
| | 815 | case 15: /* Ignore Domain Name Option */ |
| | 816 | break; |
| | 817 | case 17: |
| | 818 | size = truncate_sz("Root Path", |
| | 819 | sizeof(net_root_path), oplen); |
| | 820 | memcpy(&net_root_path, popt + 2, size); |
| | 821 | net_root_path[size] = 0; |
| | 822 | break; |
| | 823 | case 28: /* Ignore Broadcast Address Option */ |
| | 824 | break; |
| | 825 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
| | 826 | case 42: /* NTP server IP */ |
| | 827 | net_copy_ip(&net_ntp_server, (popt + 2)); |
| | 828 | break; |
| | 829 | #endif |
| | 830 | case 51: |
| | 831 | net_copy_u32(&dhcp_leasetime, (u32 *)(popt + 2)); |
| | 832 | break; |
| | 833 | case 52: |
| | 834 | dhcp_option_overload = popt[2]; |
| | 835 | break; |
| | 836 | case 53: /* Ignore Message Type Option */ |
| | 837 | break; |
| | 838 | case 54: |
| | 839 | net_copy_ip(&dhcp_server_ip, (popt + 2)); |
| | 840 | break; |
| | 841 | case 58: /* Ignore Renewal Time Option */ |
| | 842 | break; |
| | 843 | case 59: /* Ignore Rebinding Time Option */ |
| | 844 | break; |
| | 845 | case 66: /* Ignore TFTP server name */ |
| | 846 | break; |
| | 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; |
| | 852 | break; |
| | 853 | default: |
| | 854 | #if defined(CONFIG_BOOTP_VENDOREX) |
| | 855 | if (dhcp_vendorex_proc(popt)) |
| | 856 | break; |
| | 857 | #endif |
| | 858 | printf("*** Unhandled DHCP Option in OFFER/ACK:" |
| | 859 | " %d\n", *popt); |
| | 860 | break; |
| | 861 | } |
| | 862 | popt += oplen + 2; /* Process next option */ |
| | 863 | } |
| | 864 | } |
| | 865 | |
| | 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 | |
| | 895 | static int dhcp_message_type(unsigned char *popt) |
| | 896 | { |
| | 897 | if (net_read_u32((u32 *)popt) != htonl(BOOTP_VENDOR_MAGIC)) |
| | 898 | return -1; |
| | 899 | |
| | 900 | popt += 4; |
| | 901 | while (*popt != 0xff) { |
| | 902 | if (*popt == 53) /* DHCP Message Type */ |
| | 903 | return *(popt + 2); |
| | 904 | if (*popt == 0) { |
| | 905 | /* Pad */ |
| | 906 | popt += 1; |
| | 907 | } else { |
| | 908 | /* Scan through all options */ |
| | 909 | popt += *(popt + 1) + 2; |
| | 910 | } |
| | 911 | } |
| | 912 | return -1; |
| | 913 | } |
| | 914 | |
| | 915 | static void dhcp_send_request_packet(struct bootp_hdr *bp_offer) |
| | 916 | { |
| | 917 | uchar *pkt, *iphdr; |
| | 918 | struct bootp_hdr *bp; |
| | 919 | int pktlen, iplen, extlen; |
| | 920 | int eth_hdr_size; |
| | 921 | struct in_addr offered_ip; |
| | 922 | struct in_addr zero_ip; |
| | 923 | struct in_addr bcast_ip; |
| | 924 | |
| | 925 | debug("dhcp_send_request_packet: Sending DHCPREQUEST\n"); |
| | 926 | pkt = net_tx_packet; |
| | 927 | memset((void *)pkt, 0, PKTSIZE); |
| | 928 | |
| | 929 | eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); |
| | 930 | pkt += eth_hdr_size; |
| | 931 | |
| | 932 | iphdr = pkt; /* We'll need this later to set proper pkt size */ |
| | 933 | pkt += IP_UDP_HDR_SIZE; |
| | 934 | |
| | 935 | bp = (struct bootp_hdr *)pkt; |
| | 936 | bp->bp_op = OP_BOOTREQUEST; |
| | 937 | bp->bp_htype = HWT_ETHER; |
| | 938 | bp->bp_hlen = HWL_ETHER; |
| | 939 | bp->bp_hops = 0; |
| | 940 | bp->bp_secs = htons(get_timer(bootp_start) / 1000); |
| | 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 */ |
| | 943 | |
| | 944 | /* |
| | 945 | * RFC3046 requires Relay Agents to discard packets with |
| | 946 | * nonzero and offered giaddr |
| | 947 | */ |
| | 948 | zero_ip.s_addr = 0; |
| | 949 | net_write_ip(&bp->bp_giaddr, zero_ip); |
| | 950 | |
| | 951 | memcpy(bp->bp_chaddr, net_ethaddr, 6); |
| | 952 | |
| | 953 | /* |
| | 954 | * ID is the id of the OFFER packet |
| | 955 | */ |
| | 956 | |
| | 957 | net_copy_u32(&bp->bp_id, &bp_offer->bp_id); |
| | 958 | |
| | 959 | /* |
| | 960 | * Copy options from OFFER packet if present |
| | 961 | */ |
| | 962 | |
| | 963 | /* Copy offered IP into the parameters request list */ |
| | 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); |
| | 967 | |
| | 968 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
| | 969 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; |
| | 970 | bcast_ip.s_addr = 0xFFFFFFFFL; |
| | 971 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); |
| | 972 | |
| | 973 | #ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY |
| | 974 | udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY); |
| | 975 | #endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */ |
| | 976 | debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen); |
| | 977 | net_send_packet(net_tx_packet, pktlen); |
| | 978 | } |
| | 979 | |
| | 980 | /* |
| | 981 | * Handle DHCP received packets. |
| | 982 | */ |
| | 983 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
| | 984 | unsigned src, unsigned len) |
| | 985 | { |
| | 986 | struct bootp_hdr *bp = (struct bootp_hdr *)pkt; |
| | 987 | |
| | 988 | debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", |
| | 989 | src, dest, len, dhcp_state); |
| | 990 | |
| | 991 | /* Filter out pkts we don't want */ |
| | 992 | if (check_reply_packet(pkt, dest, src, len)) |
| | 993 | return; |
| | 994 | |
| | 995 | debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: " |
| | 996 | "%d\n", src, dest, len, dhcp_state); |
| | 997 | |
| | 998 | switch (dhcp_state) { |
| | 999 | case SELECTING: |
| | 1000 | /* |
| | 1001 | * Wait an appropriate time for any potential DHCPOFFER packets |
| | 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. |
| | 1005 | */ |
| | 1006 | debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file); |
| | 1007 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
| | 1008 | if (strncmp(bp->bp_file, |
| | 1009 | CONFIG_SYS_BOOTFILE_PREFIX, |
| | 1010 | strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) { |
| | 1011 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
| | 1012 | dhcp_packet_process_options(bp); |
| | 1013 | |
| | 1014 | debug("TRANSITIONING TO REQUESTING STATE\n"); |
| | 1015 | dhcp_state = REQUESTING; |
| | 1016 | |
| | 1017 | net_set_timeout_handler(5000, bootp_timeout_handler); |
| | 1018 | dhcp_send_request_packet(bp); |
| | 1019 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
| | 1020 | } |
| | 1021 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
| | 1022 | |
| | 1023 | return; |
| | 1024 | break; |
| | 1025 | case REQUESTING: |
| | 1026 | debug("DHCP State: REQUESTING\n"); |
| | 1027 | |
| | 1028 | if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) { |
| | 1029 | dhcp_packet_process_options(bp); |
| | 1030 | /* Store net params from reply */ |
| | 1031 | store_net_params(bp); |
| | 1032 | dhcp_state = BOUND; |
| | 1033 | printf("DHCP client bound to address %pI4 (%lu ms)\n", |
| | 1034 | &net_ip, get_timer(bootp_start)); |
| | 1035 | net_set_timeout_handler(0, (thand_f *)0); |
| | 1036 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, |
| | 1037 | "bootp_stop"); |
| | 1038 | |
| | 1039 | net_auto_load(); |
| | 1040 | return; |
| | 1041 | } |
| | 1042 | break; |
| | 1043 | case BOUND: |
| | 1044 | /* DHCP client bound to address */ |
| | 1045 | break; |
| | 1046 | default: |
| | 1047 | puts("DHCP: INVALID STATE\n"); |
| | 1048 | break; |
| | 1049 | } |
| | 1050 | } |
| | 1051 | |
| | 1052 | void dhcp_request(void) |
| | 1053 | { |
| | 1054 | bootp_request(); |
| | 1055 | } |
| | 1056 | #endif /* CONFIG_CMD_DHCP */ |
projects / people / ms / u-boot.git / blame_incremental