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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> | |
14 | #include "bootp.h" | |
15 | #include "tftp.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 | ||
54 | ulong bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE]; | |
55 | unsigned int bootp_num_ids; | |
3861aa5c | 56 | int BootpTry; |
f59be6e8 SW |
57 | ulong bootp_start; |
58 | ulong bootp_timeout; | |
3861aa5c | 59 | |
643d1ab2 | 60 | #if defined(CONFIG_CMD_DHCP) |
06370590 KP |
61 | static dhcp_state_t dhcp_state = INIT; |
62 | static unsigned long dhcp_leasetime; | |
049a95a7 JH |
63 | static struct in_addr dhcp_server_ip; |
64 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, | |
65 | unsigned src, unsigned len); | |
3861aa5c WD |
66 | |
67 | /* For Debug */ | |
3e38691e WD |
68 | #if 0 |
69 | static char *dhcpmsg2str(int type) | |
3861aa5c WD |
70 | { |
71 | switch (type) { | |
232c150a WD |
72 | case 1: return "DHCPDISCOVER"; break; |
73 | case 2: return "DHCPOFFER"; break; | |
74 | case 3: return "DHCPREQUEST"; break; | |
75 | case 4: return "DHCPDECLINE"; break; | |
76 | case 5: return "DHCPACK"; break; | |
77 | case 6: return "DHCPNACK"; break; | |
78 | case 7: return "DHCPRELEASE"; break; | |
3861aa5c WD |
79 | default: return "UNKNOWN/INVALID MSG TYPE"; break; |
80 | } | |
81 | } | |
3e38691e | 82 | #endif |
610f2e9c | 83 | #endif |
3861aa5c | 84 | |
92ac8acc TR |
85 | static void bootp_add_id(ulong id) |
86 | { | |
87 | if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) { | |
88 | size_t size = sizeof(bootp_ids) - sizeof(id); | |
89 | ||
90 | memmove(bootp_ids, &bootp_ids[1], size); | |
91 | bootp_ids[bootp_num_ids - 1] = id; | |
92 | } else { | |
93 | bootp_ids[bootp_num_ids] = id; | |
94 | bootp_num_ids++; | |
95 | } | |
96 | } | |
97 | ||
98 | static bool bootp_match_id(ulong id) | |
99 | { | |
100 | unsigned int i; | |
101 | ||
102 | for (i = 0; i < bootp_num_ids; i++) | |
103 | if (bootp_ids[i] == id) | |
104 | return true; | |
105 | ||
106 | return false; | |
107 | } | |
108 | ||
3861aa5c WD |
109 | static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len) |
110 | { | |
3090b7e3 | 111 | struct Bootp_t *bp = (struct Bootp_t *) pkt; |
3861aa5c WD |
112 | int retval = 0; |
113 | ||
114 | if (dest != PORT_BOOTPC || src != PORT_BOOTPS) | |
115 | retval = -1; | |
f8315731 | 116 | else if (len < sizeof(struct Bootp_t) - OPT_FIELD_SIZE) |
3861aa5c WD |
117 | retval = -2; |
118 | else if (bp->bp_op != OP_BOOTREQUEST && | |
3090b7e3 JH |
119 | bp->bp_op != OP_BOOTREPLY && |
120 | bp->bp_op != DHCP_OFFER && | |
121 | bp->bp_op != DHCP_ACK && | |
122 | bp->bp_op != DHCP_NAK) | |
3861aa5c | 123 | retval = -3; |
3861aa5c WD |
124 | else if (bp->bp_htype != HWT_ETHER) |
125 | retval = -4; | |
126 | else if (bp->bp_hlen != HWL_ETHER) | |
127 | retval = -5; | |
92ac8acc | 128 | else if (!bootp_match_id(NetReadLong((ulong *)&bp->bp_id))) |
3861aa5c | 129 | retval = -6; |
3861aa5c | 130 | |
0ebf04c6 | 131 | debug("Filtering pkt = %d\n", retval); |
3861aa5c WD |
132 | |
133 | return retval; | |
134 | } | |
135 | ||
136 | /* | |
137 | * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet | |
138 | */ | |
3090b7e3 | 139 | static void BootpCopyNetParams(struct Bootp_t *bp) |
3861aa5c | 140 | { |
5d110f0a | 141 | #if !defined(CONFIG_BOOTP_SERVERIP) |
049a95a7 | 142 | struct in_addr tmp_ip; |
1752f0fd | 143 | |
049a95a7 JH |
144 | net_copy_ip(&tmp_ip, &bp->bp_siaddr); |
145 | if (tmp_ip.s_addr != 0) | |
146 | net_copy_ip(&net_server_ip, &bp->bp_siaddr); | |
cb487f56 | 147 | memcpy(NetServerEther, ((struct ethernet_hdr *)NetRxPacket)->et_src, 6); |
3d3befa7 | 148 | if (strlen(bp->bp_file) > 0) |
3090b7e3 | 149 | copy_filename(BootFile, bp->bp_file, sizeof(BootFile)); |
3861aa5c | 150 | |
0ebf04c6 | 151 | debug("Bootfile: %s\n", BootFile); |
3861aa5c WD |
152 | |
153 | /* Propagate to environment: | |
8bde7f77 | 154 | * don't delete exising entry when BOOTP / DHCP reply does |
3861aa5c WD |
155 | * not contain a new value |
156 | */ | |
3090b7e3 JH |
157 | if (*BootFile) |
158 | setenv("bootfile", BootFile); | |
ecec4e9c | 159 | #endif |
049a95a7 | 160 | net_copy_ip(&net_ip, &bp->bp_yiaddr); |
3861aa5c WD |
161 | } |
162 | ||
3090b7e3 | 163 | static int truncate_sz(const char *name, int maxlen, int curlen) |
3861aa5c WD |
164 | { |
165 | if (curlen >= maxlen) { | |
3090b7e3 JH |
166 | printf("*** WARNING: %s is too long (%d - max: %d)" |
167 | " - truncated\n", name, curlen, maxlen); | |
3861aa5c WD |
168 | curlen = maxlen - 1; |
169 | } | |
3090b7e3 | 170 | return curlen; |
3861aa5c WD |
171 | } |
172 | ||
643d1ab2 | 173 | #if !defined(CONFIG_CMD_DHCP) |
3861aa5c | 174 | |
3090b7e3 | 175 | static void BootpVendorFieldProcess(u8 *ext) |
3861aa5c | 176 | { |
232c150a | 177 | int size = *(ext + 1); |
3861aa5c | 178 | |
0ebf04c6 | 179 | debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, |
3090b7e3 | 180 | *(ext + 1)); |
3861aa5c | 181 | |
232c150a | 182 | NetBootFileSize = 0; |
3861aa5c | 183 | |
232c150a WD |
184 | switch (*ext) { |
185 | /* Fixed length fields */ | |
3090b7e3 | 186 | case 1: /* Subnet mask */ |
049a95a7 JH |
187 | if (net_netmask.s_addr == 0) |
188 | net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2)); | |
3861aa5c | 189 | break; |
3090b7e3 | 190 | case 2: /* Time offset - Not yet supported */ |
3861aa5c | 191 | break; |
232c150a | 192 | /* Variable length fields */ |
3090b7e3 | 193 | case 3: /* Gateways list */ |
049a95a7 JH |
194 | if (net_gateway.s_addr == 0) |
195 | net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2)); | |
3861aa5c | 196 | break; |
3090b7e3 | 197 | case 4: /* Time server - Not yet supported */ |
3861aa5c | 198 | break; |
3090b7e3 | 199 | case 5: /* IEN-116 name server - Not yet supported */ |
3861aa5c WD |
200 | break; |
201 | case 6: | |
049a95a7 JH |
202 | if (net_dns_server.s_addr == 0) |
203 | net_copy_ip(&net_dns_server, | |
204 | (struct in_addr *)(ext + 2)); | |
1fe80d79 | 205 | #if defined(CONFIG_BOOTP_DNS2) |
049a95a7 JH |
206 | if ((net_dns_server2.s_addr == 0) && (size > 4)) |
207 | net_copy_ip(&net_dns_server2, | |
208 | (struct in_addr *)(ext + 2 + 4)); | |
fe389a82 | 209 | #endif |
3861aa5c | 210 | break; |
3090b7e3 | 211 | case 7: /* Log server - Not yet supported */ |
3861aa5c | 212 | break; |
3090b7e3 | 213 | case 8: /* Cookie/Quote server - Not yet supported */ |
3861aa5c | 214 | break; |
3090b7e3 | 215 | case 9: /* LPR server - Not yet supported */ |
3861aa5c | 216 | break; |
3090b7e3 | 217 | case 10: /* Impress server - Not yet supported */ |
3861aa5c | 218 | break; |
3090b7e3 | 219 | case 11: /* RPL server - Not yet supported */ |
3861aa5c | 220 | break; |
3090b7e3 | 221 | case 12: /* Host name */ |
3861aa5c | 222 | if (NetOurHostName[0] == 0) { |
3090b7e3 JH |
223 | size = truncate_sz("Host Name", |
224 | sizeof(NetOurHostName), size); | |
225 | memcpy(&NetOurHostName, ext + 2, size); | |
232c150a | 226 | NetOurHostName[size] = 0; |
3861aa5c WD |
227 | } |
228 | break; | |
3090b7e3 | 229 | case 13: /* Boot file size */ |
3861aa5c | 230 | if (size == 2) |
3090b7e3 | 231 | NetBootFileSize = ntohs(*(ushort *) (ext + 2)); |
3861aa5c | 232 | else if (size == 4) |
3090b7e3 | 233 | NetBootFileSize = ntohl(*(ulong *) (ext + 2)); |
3861aa5c | 234 | break; |
3090b7e3 | 235 | case 14: /* Merit dump file - Not yet supported */ |
3861aa5c | 236 | break; |
3090b7e3 | 237 | case 15: /* Domain name - Not yet supported */ |
3861aa5c | 238 | break; |
3090b7e3 | 239 | case 16: /* Swap server - Not yet supported */ |
3861aa5c | 240 | break; |
3090b7e3 | 241 | case 17: /* Root path */ |
3861aa5c | 242 | if (NetOurRootPath[0] == 0) { |
3090b7e3 JH |
243 | size = truncate_sz("Root Path", |
244 | sizeof(NetOurRootPath), size); | |
245 | memcpy(&NetOurRootPath, ext + 2, size); | |
232c150a | 246 | NetOurRootPath[size] = 0; |
3861aa5c WD |
247 | } |
248 | break; | |
3090b7e3 | 249 | case 18: /* Extension path - Not yet supported */ |
3861aa5c | 250 | /* |
8bde7f77 WD |
251 | * This can be used to send the information of the |
252 | * vendor area in another file that the client can | |
253 | * access via TFTP. | |
3861aa5c WD |
254 | */ |
255 | break; | |
232c150a | 256 | /* IP host layer fields */ |
3090b7e3 | 257 | case 40: /* NIS Domain name */ |
3861aa5c | 258 | if (NetOurNISDomain[0] == 0) { |
3090b7e3 JH |
259 | size = truncate_sz("NIS Domain Name", |
260 | sizeof(NetOurNISDomain), size); | |
261 | memcpy(&NetOurNISDomain, ext + 2, size); | |
232c150a | 262 | NetOurNISDomain[size] = 0; |
3861aa5c WD |
263 | } |
264 | break; | |
09e3a67d LP |
265 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
266 | case 42: /* NTP server IP */ | |
049a95a7 | 267 | net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2)); |
09e3a67d LP |
268 | break; |
269 | #endif | |
232c150a | 270 | /* Application layer fields */ |
3090b7e3 | 271 | case 43: /* Vendor specific info - Not yet supported */ |
3861aa5c | 272 | /* |
8bde7f77 WD |
273 | * Binary information to exchange specific |
274 | * product information. | |
3861aa5c WD |
275 | */ |
276 | break; | |
232c150a WD |
277 | /* Reserved (custom) fields (128..254) */ |
278 | } | |
3861aa5c WD |
279 | } |
280 | ||
3090b7e3 | 281 | static void BootpVendorProcess(u8 *ext, int size) |
3861aa5c | 282 | { |
232c150a | 283 | u8 *end = ext + size; |
3861aa5c | 284 | |
0ebf04c6 | 285 | debug("[BOOTP] Checking extension (%d bytes)...\n", size); |
3861aa5c | 286 | |
232c150a WD |
287 | while ((ext < end) && (*ext != 0xff)) { |
288 | if (*ext == 0) { | |
289 | ext++; | |
290 | } else { | |
291 | u8 *opt = ext; | |
292 | ||
293 | ext += ext[1] + 2; | |
294 | if (ext <= end) | |
3090b7e3 | 295 | BootpVendorFieldProcess(opt); |
232c150a | 296 | } |
3861aa5c | 297 | } |
3861aa5c | 298 | |
3090b7e3 | 299 | debug("[BOOTP] Received fields:\n"); |
049a95a7 JH |
300 | if (net_netmask.s_addr) |
301 | debug("net_netmask : %pI4\n", &net_netmask); | |
232c150a | 302 | |
049a95a7 JH |
303 | if (net_gateway.s_addr) |
304 | debug("net_gateway : %pI4", &net_gateway); | |
232c150a | 305 | |
0ebf04c6 RG |
306 | if (NetBootFileSize) |
307 | debug("NetBootFileSize : %d\n", NetBootFileSize); | |
3861aa5c | 308 | |
0ebf04c6 RG |
309 | if (NetOurHostName[0]) |
310 | debug("NetOurHostName : %s\n", NetOurHostName); | |
232c150a | 311 | |
0ebf04c6 RG |
312 | if (NetOurRootPath[0]) |
313 | debug("NetOurRootPath : %s\n", NetOurRootPath); | |
232c150a | 314 | |
0ebf04c6 RG |
315 | if (NetOurNISDomain[0]) |
316 | debug("NetOurNISDomain : %s\n", NetOurNISDomain); | |
232c150a | 317 | |
0ebf04c6 RG |
318 | if (NetBootFileSize) |
319 | debug("NetBootFileSize: %d\n", NetBootFileSize); | |
09e3a67d LP |
320 | |
321 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) | |
049a95a7 JH |
322 | if (net_ntp_server) |
323 | debug("net_ntp_server : %pI4\n", &net_ntp_server); | |
09e3a67d | 324 | #endif |
232c150a | 325 | } |
09349866 | 326 | |
3861aa5c WD |
327 | /* |
328 | * Handle a BOOTP received packet. | |
329 | */ | |
049a95a7 JH |
330 | static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
331 | unsigned src, unsigned len) | |
3861aa5c | 332 | { |
3090b7e3 | 333 | struct Bootp_t *bp; |
3861aa5c | 334 | |
0ebf04c6 | 335 | debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n", |
3090b7e3 | 336 | src, dest, len, sizeof(struct Bootp_t)); |
3861aa5c | 337 | |
3090b7e3 | 338 | bp = (struct Bootp_t *)pkt; |
3861aa5c | 339 | |
3090b7e3 JH |
340 | /* Filter out pkts we don't want */ |
341 | if (BootpCheckPkt(pkt, dest, src, len)) | |
3861aa5c WD |
342 | return; |
343 | ||
344 | /* | |
232c150a | 345 | * Got a good BOOTP reply. Copy the data into our variables. |
3861aa5c WD |
346 | */ |
347 | #ifdef CONFIG_STATUS_LED | |
3090b7e3 | 348 | status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); |
3861aa5c WD |
349 | #endif |
350 | ||
351 | BootpCopyNetParams(bp); /* Store net parameters from reply */ | |
352 | ||
353 | /* Retrieve extended information (we must parse the vendor area) */ | |
3090b7e3 | 354 | if (NetReadLong((ulong *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) |
77ddac94 | 355 | BootpVendorProcess((uchar *)&bp->bp_vend[4], len); |
3861aa5c WD |
356 | |
357 | NetSetTimeout(0, (thand_f *)0); | |
573f14fe | 358 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop"); |
3861aa5c | 359 | |
0ebf04c6 | 360 | debug("Got good BOOTP\n"); |
3861aa5c | 361 | |
e4a3d57d | 362 | net_auto_load(); |
3861aa5c | 363 | } |
610f2e9c | 364 | #endif |
3861aa5c WD |
365 | |
366 | /* | |
367 | * Timeout on BOOTP/DHCP request. | |
368 | */ | |
369 | static void | |
370 | BootpTimeout(void) | |
371 | { | |
f59be6e8 SW |
372 | ulong time_taken = get_timer(bootp_start); |
373 | ||
374 | if (time_taken >= TIMEOUT_MS) { | |
2c00e099 | 375 | #ifdef CONFIG_BOOTP_MAY_FAIL |
f59be6e8 | 376 | puts("\nRetry time exceeded\n"); |
b977aa80 | 377 | net_set_state(NETLOOP_FAIL); |
2c00e099 | 378 | #else |
f59be6e8 | 379 | puts("\nRetry time exceeded; starting again\n"); |
3090b7e3 | 380 | NetStartAgain(); |
2c00e099 | 381 | #endif |
3861aa5c | 382 | } else { |
f59be6e8 | 383 | bootp_timeout *= 2; |
92ac8acc TR |
384 | if (bootp_timeout > 2000) |
385 | bootp_timeout = 2000; | |
f59be6e8 | 386 | NetSetTimeout(bootp_timeout, BootpTimeout); |
3090b7e3 | 387 | BootpRequest(); |
3861aa5c WD |
388 | } |
389 | } | |
390 | ||
9ace17c8 IY |
391 | #define put_vci(e, str) \ |
392 | do { \ | |
393 | size_t vci_strlen = strlen(str); \ | |
394 | *e++ = 60; /* Vendor Class Identifier */ \ | |
395 | *e++ = vci_strlen; \ | |
396 | memcpy(e, str, vci_strlen); \ | |
397 | e += vci_strlen; \ | |
398 | } while (0) | |
399 | ||
3861aa5c WD |
400 | /* |
401 | * Initialize BOOTP extension fields in the request. | |
402 | */ | |
643d1ab2 | 403 | #if defined(CONFIG_CMD_DHCP) |
049a95a7 JH |
404 | static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip, |
405 | struct in_addr requested_ip) | |
3861aa5c | 406 | { |
232c150a WD |
407 | u8 *start = e; |
408 | u8 *cnt; | |
d2b5d5c4 JH |
409 | #if defined(CONFIG_BOOTP_PXE) |
410 | char *uuid; | |
d2b5d5c4 JH |
411 | u16 clientarch; |
412 | #endif | |
232c150a | 413 | |
1fe80d79 | 414 | #if defined(CONFIG_BOOTP_VENDOREX) |
232c150a | 415 | u8 *x; |
3861aa5c | 416 | #endif |
1fe80d79 | 417 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
77ddac94 | 418 | char *hostname; |
fe389a82 | 419 | #endif |
3861aa5c | 420 | |
232c150a WD |
421 | *e++ = 99; /* RFC1048 Magic Cookie */ |
422 | *e++ = 130; | |
423 | *e++ = 83; | |
424 | *e++ = 99; | |
3861aa5c | 425 | |
232c150a WD |
426 | *e++ = 53; /* DHCP Message Type */ |
427 | *e++ = 1; | |
428 | *e++ = message_type; | |
3861aa5c | 429 | |
232c150a WD |
430 | *e++ = 57; /* Maximum DHCP Message Size */ |
431 | *e++ = 2; | |
f8315731 JH |
432 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8; |
433 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; | |
3861aa5c | 434 | |
049a95a7 JH |
435 | if (server_ip.s_addr) { |
436 | int tmp = ntohl(server_ip.s_addr); | |
3861aa5c | 437 | |
232c150a WD |
438 | *e++ = 54; /* ServerID */ |
439 | *e++ = 4; | |
440 | *e++ = tmp >> 24; | |
441 | *e++ = tmp >> 16; | |
442 | *e++ = tmp >> 8; | |
443 | *e++ = tmp & 0xff; | |
444 | } | |
3861aa5c | 445 | |
049a95a7 JH |
446 | if (requested_ip.s_addr) { |
447 | int tmp = ntohl(requested_ip.s_addr); | |
3861aa5c | 448 | |
232c150a WD |
449 | *e++ = 50; /* Requested IP */ |
450 | *e++ = 4; | |
451 | *e++ = tmp >> 24; | |
452 | *e++ = tmp >> 16; | |
453 | *e++ = tmp >> 8; | |
454 | *e++ = tmp & 0xff; | |
455 | } | |
1fe80d79 | 456 | #if defined(CONFIG_BOOTP_SEND_HOSTNAME) |
3090b7e3 JH |
457 | hostname = getenv("hostname"); |
458 | if (hostname) { | |
459 | int hostnamelen = strlen(hostname); | |
232c150a WD |
460 | |
461 | *e++ = 12; /* Hostname */ | |
462 | *e++ = hostnamelen; | |
3090b7e3 | 463 | memcpy(e, hostname, hostnamelen); |
232c150a WD |
464 | e += hostnamelen; |
465 | } | |
fe389a82 SR |
466 | #endif |
467 | ||
d2b5d5c4 JH |
468 | #if defined(CONFIG_BOOTP_PXE) |
469 | clientarch = CONFIG_BOOTP_PXE_CLIENTARCH; | |
470 | *e++ = 93; /* Client System Architecture */ | |
471 | *e++ = 2; | |
472 | *e++ = (clientarch >> 8) & 0xff; | |
473 | *e++ = clientarch & 0xff; | |
474 | ||
475 | *e++ = 94; /* Client Network Interface Identifier */ | |
476 | *e++ = 3; | |
477 | *e++ = 1; /* type field for UNDI */ | |
478 | *e++ = 0; /* major revision */ | |
479 | *e++ = 0; /* minor revision */ | |
480 | ||
481 | uuid = getenv("pxeuuid"); | |
482 | ||
483 | if (uuid) { | |
484 | if (uuid_str_valid(uuid)) { | |
485 | *e++ = 97; /* Client Machine Identifier */ | |
486 | *e++ = 17; | |
487 | *e++ = 0; /* type 0 - UUID */ | |
488 | ||
d718ded0 | 489 | uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD); |
d2b5d5c4 JH |
490 | e += 16; |
491 | } else { | |
492 | printf("Invalid pxeuuid: %s\n", uuid); | |
493 | } | |
494 | } | |
9ace17c8 | 495 | #endif |
d2b5d5c4 | 496 | |
9ace17c8 IY |
497 | #ifdef CONFIG_BOOTP_VCI_STRING |
498 | put_vci(e, CONFIG_BOOTP_VCI_STRING); | |
d2b5d5c4 JH |
499 | #endif |
500 | ||
1fe80d79 | 501 | #if defined(CONFIG_BOOTP_VENDOREX) |
3090b7e3 JH |
502 | x = dhcp_vendorex_prep(e); |
503 | if (x) | |
232c150a | 504 | return x - start; |
3861aa5c WD |
505 | #endif |
506 | ||
232c150a WD |
507 | *e++ = 55; /* Parameter Request List */ |
508 | cnt = e++; /* Pointer to count of requested items */ | |
509 | *cnt = 0; | |
1fe80d79 | 510 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
511 | *e++ = 1; /* Subnet Mask */ |
512 | *cnt += 1; | |
3861aa5c | 513 | #endif |
1fe80d79 | 514 | #if defined(CONFIG_BOOTP_TIMEOFFSET) |
ea287deb WD |
515 | *e++ = 2; |
516 | *cnt += 1; | |
517 | #endif | |
1fe80d79 | 518 | #if defined(CONFIG_BOOTP_GATEWAY) |
232c150a WD |
519 | *e++ = 3; /* Router Option */ |
520 | *cnt += 1; | |
3861aa5c | 521 | #endif |
1fe80d79 | 522 | #if defined(CONFIG_BOOTP_DNS) |
232c150a WD |
523 | *e++ = 6; /* DNS Server(s) */ |
524 | *cnt += 1; | |
3861aa5c | 525 | #endif |
1fe80d79 | 526 | #if defined(CONFIG_BOOTP_HOSTNAME) |
232c150a WD |
527 | *e++ = 12; /* Hostname */ |
528 | *cnt += 1; | |
3861aa5c | 529 | #endif |
1fe80d79 | 530 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
232c150a WD |
531 | *e++ = 13; /* Boot File Size */ |
532 | *cnt += 1; | |
3861aa5c | 533 | #endif |
1fe80d79 | 534 | #if defined(CONFIG_BOOTP_BOOTPATH) |
232c150a WD |
535 | *e++ = 17; /* Boot path */ |
536 | *cnt += 1; | |
3861aa5c | 537 | #endif |
1fe80d79 | 538 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
232c150a WD |
539 | *e++ = 40; /* NIS Domain name request */ |
540 | *cnt += 1; | |
ea287deb | 541 | #endif |
1fe80d79 | 542 | #if defined(CONFIG_BOOTP_NTPSERVER) |
ea287deb WD |
543 | *e++ = 42; |
544 | *cnt += 1; | |
3861aa5c | 545 | #endif |
258ccd68 JL |
546 | /* no options, so back up to avoid sending an empty request list */ |
547 | if (*cnt == 0) | |
548 | e -= 2; | |
549 | ||
232c150a | 550 | *e++ = 255; /* End of the list */ |
3861aa5c | 551 | |
232c150a | 552 | /* Pad to minimal length */ |
3861aa5c | 553 | #ifdef CONFIG_DHCP_MIN_EXT_LEN |
21076f61 | 554 | while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN) |
232c150a | 555 | *e++ = 0; |
3861aa5c WD |
556 | #endif |
557 | ||
232c150a | 558 | return e - start; |
3861aa5c WD |
559 | } |
560 | ||
610f2e9c | 561 | #else |
3861aa5c | 562 | /* |
3090b7e3 | 563 | * Warning: no field size check - change CONFIG_BOOTP_* at your own risk! |
3861aa5c | 564 | */ |
049a95a7 | 565 | static int bootp_extended(u8 *e) |
3861aa5c | 566 | { |
232c150a | 567 | u8 *start = e; |
3861aa5c | 568 | |
232c150a WD |
569 | *e++ = 99; /* RFC1048 Magic Cookie */ |
570 | *e++ = 130; | |
571 | *e++ = 83; | |
572 | *e++ = 99; | |
3861aa5c | 573 | |
643d1ab2 | 574 | #if defined(CONFIG_CMD_DHCP) |
232c150a WD |
575 | *e++ = 53; /* DHCP Message Type */ |
576 | *e++ = 1; | |
577 | *e++ = DHCP_DISCOVER; | |
578 | ||
579 | *e++ = 57; /* Maximum DHCP Message Size */ | |
580 | *e++ = 2; | |
f8315731 JH |
581 | *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16; |
582 | *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; | |
610f2e9c | 583 | #endif |
3861aa5c | 584 | |
7ac2fe2d IY |
585 | #if defined(CONFIG_BOOTP_VCI_STRING) || \ |
586 | (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING)) | |
587 | #ifdef CONFIG_SPL_BUILD | |
588 | put_vci(e, CONFIG_SPL_NET_VCI_STRING); | |
589 | #else | |
9ace17c8 IY |
590 | put_vci(e, CONFIG_BOOTP_VCI_STRING); |
591 | #endif | |
7ac2fe2d | 592 | #endif |
9ace17c8 | 593 | |
1fe80d79 | 594 | #if defined(CONFIG_BOOTP_SUBNETMASK) |
232c150a WD |
595 | *e++ = 1; /* Subnet mask request */ |
596 | *e++ = 4; | |
597 | e += 4; | |
3861aa5c WD |
598 | #endif |
599 | ||
1fe80d79 | 600 | #if defined(CONFIG_BOOTP_GATEWAY) |
232c150a WD |
601 | *e++ = 3; /* Default gateway request */ |
602 | *e++ = 4; | |
603 | e += 4; | |
3861aa5c WD |
604 | #endif |
605 | ||
1fe80d79 | 606 | #if defined(CONFIG_BOOTP_DNS) |
232c150a WD |
607 | *e++ = 6; /* Domain Name Server */ |
608 | *e++ = 4; | |
609 | e += 4; | |
3861aa5c WD |
610 | #endif |
611 | ||
1fe80d79 | 612 | #if defined(CONFIG_BOOTP_HOSTNAME) |
232c150a WD |
613 | *e++ = 12; /* Host name request */ |
614 | *e++ = 32; | |
615 | e += 32; | |
3861aa5c WD |
616 | #endif |
617 | ||
1fe80d79 | 618 | #if defined(CONFIG_BOOTP_BOOTFILESIZE) |
232c150a WD |
619 | *e++ = 13; /* Boot file size */ |
620 | *e++ = 2; | |
621 | e += 2; | |
3861aa5c WD |
622 | #endif |
623 | ||
1fe80d79 | 624 | #if defined(CONFIG_BOOTP_BOOTPATH) |
232c150a WD |
625 | *e++ = 17; /* Boot path */ |
626 | *e++ = 32; | |
627 | e += 32; | |
3861aa5c WD |
628 | #endif |
629 | ||
1fe80d79 | 630 | #if defined(CONFIG_BOOTP_NISDOMAIN) |
232c150a WD |
631 | *e++ = 40; /* NIS Domain name request */ |
632 | *e++ = 32; | |
633 | e += 32; | |
3861aa5c | 634 | #endif |
09e3a67d LP |
635 | #if defined(CONFIG_BOOTP_NTPSERVER) |
636 | *e++ = 42; | |
637 | *e++ = 4; | |
638 | e += 4; | |
639 | #endif | |
3861aa5c | 640 | |
232c150a | 641 | *e++ = 255; /* End of the list */ |
3861aa5c | 642 | |
232c150a | 643 | return e - start; |
3861aa5c | 644 | } |
610f2e9c | 645 | #endif |
3861aa5c | 646 | |
f59be6e8 SW |
647 | void BootpReset(void) |
648 | { | |
92ac8acc | 649 | bootp_num_ids = 0; |
f59be6e8 SW |
650 | BootpTry = 0; |
651 | bootp_start = get_timer(0); | |
92ac8acc | 652 | bootp_timeout = 250; |
f59be6e8 SW |
653 | } |
654 | ||
3861aa5c | 655 | void |
3090b7e3 | 656 | BootpRequest(void) |
3861aa5c | 657 | { |
db288a96 | 658 | uchar *pkt, *iphdr; |
3090b7e3 | 659 | struct Bootp_t *bp; |
ae446f56 JH |
660 | int extlen, pktlen, iplen; |
661 | int eth_hdr_size; | |
eafc8db0 | 662 | #ifdef CONFIG_BOOTP_RANDOM_DELAY |
8e8d73b4 | 663 | ulong rand_ms; |
eafc8db0 | 664 | #endif |
92ac8acc | 665 | ulong BootpID; |
049a95a7 JH |
666 | struct in_addr zero_ip; |
667 | struct in_addr bcast_ip; | |
3861aa5c | 668 | |
573f14fe | 669 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start"); |
643d1ab2 | 670 | #if defined(CONFIG_CMD_DHCP) |
3861aa5c WD |
671 | dhcp_state = INIT; |
672 | #endif | |
673 | ||
674 | #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ | |
eafc8db0 JH |
675 | if (BootpTry == 0) |
676 | srand_mac(); | |
3861aa5c | 677 | |
eafc8db0 JH |
678 | if (BootpTry <= 2) /* Start with max 1024 * 1ms */ |
679 | rand_ms = rand() >> (22 - BootpTry); | |
680 | else /* After 3rd BOOTP request max 8192 * 1ms */ | |
681 | rand_ms = rand() >> 19; | |
3861aa5c | 682 | |
eafc8db0 | 683 | printf("Random delay: %ld ms...\n", rand_ms); |
8e8d73b4 | 684 | mdelay(rand_ms); |
3090b7e3 | 685 | |
3861aa5c WD |
686 | #endif /* CONFIG_BOOTP_RANDOM_DELAY */ |
687 | ||
688 | printf("BOOTP broadcast %d\n", ++BootpTry); | |
689 | pkt = NetTxPacket; | |
3090b7e3 | 690 | memset((void *)pkt, 0, PKTSIZE); |
3861aa5c | 691 | |
ae446f56 JH |
692 | eth_hdr_size = NetSetEther(pkt, NetBcastAddr, PROT_IP); |
693 | pkt += eth_hdr_size; | |
3861aa5c WD |
694 | |
695 | /* | |
3090b7e3 JH |
696 | * Next line results in incorrect packet size being transmitted, |
697 | * resulting in errors in some DHCP servers, reporting missing bytes. | |
698 | * Size must be set in packet header after extension length has been | |
699 | * determined. | |
3861aa5c WD |
700 | * C. Hallinan, DS4.COM, Inc. |
701 | */ | |
4b11c916 | 702 | /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, |
3090b7e3 | 703 | sizeof (struct Bootp_t)); */ |
4b11c916 | 704 | iphdr = pkt; /* We need this later for net_set_udp_header() */ |
594c26f8 | 705 | pkt += IP_UDP_HDR_SIZE; |
3861aa5c | 706 | |
3090b7e3 | 707 | bp = (struct Bootp_t *)pkt; |
3861aa5c WD |
708 | bp->bp_op = OP_BOOTREQUEST; |
709 | bp->bp_htype = HWT_ETHER; | |
710 | bp->bp_hlen = HWL_ETHER; | |
711 | bp->bp_hops = 0; | |
49f3bdbb | 712 | bp->bp_secs = htons(get_timer(0) / 1000); |
049a95a7 JH |
713 | zero_ip.s_addr = 0; |
714 | net_write_ip(&bp->bp_ciaddr, zero_ip); | |
715 | net_write_ip(&bp->bp_yiaddr, zero_ip); | |
716 | net_write_ip(&bp->bp_siaddr, zero_ip); | |
717 | net_write_ip(&bp->bp_giaddr, zero_ip); | |
3090b7e3 JH |
718 | memcpy(bp->bp_chaddr, NetOurEther, 6); |
719 | copy_filename(bp->bp_file, BootFile, sizeof(bp->bp_file)); | |
3861aa5c WD |
720 | |
721 | /* Request additional information from the BOOTP/DHCP server */ | |
643d1ab2 | 722 | #if defined(CONFIG_CMD_DHCP) |
049a95a7 JH |
723 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip, |
724 | zero_ip); | |
3861aa5c | 725 | #else |
049a95a7 | 726 | extlen = bootp_extended((u8 *)bp->bp_vend); |
610f2e9c | 727 | #endif |
3861aa5c WD |
728 | |
729 | /* | |
730 | * Bootp ID is the lower 4 bytes of our ethernet address | |
49f3bdbb | 731 | * plus the current time in ms. |
3861aa5c WD |
732 | */ |
733 | BootpID = ((ulong)NetOurEther[2] << 24) | |
734 | | ((ulong)NetOurEther[3] << 16) | |
735 | | ((ulong)NetOurEther[4] << 8) | |
736 | | (ulong)NetOurEther[5]; | |
737 | BootpID += get_timer(0); | |
92ac8acc TR |
738 | BootpID = htonl(BootpID); |
739 | bootp_add_id(BootpID); | |
3861aa5c WD |
740 | NetCopyLong(&bp->bp_id, &BootpID); |
741 | ||
742 | /* | |
743 | * Calculate proper packet lengths taking into account the | |
744 | * variable size of the options field | |
745 | */ | |
ae446f56 JH |
746 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
747 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; | |
049a95a7 JH |
748 | bcast_ip.s_addr = 0xFFFFFFFFL; |
749 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
f59be6e8 | 750 | NetSetTimeout(bootp_timeout, BootpTimeout); |
3861aa5c | 751 | |
643d1ab2 | 752 | #if defined(CONFIG_CMD_DHCP) |
3861aa5c | 753 | dhcp_state = SELECTING; |
049a95a7 | 754 | net_set_udp_handler(dhcp_handler); |
3861aa5c | 755 | #else |
049a95a7 | 756 | net_set_udp_handler(bootp_handler); |
610f2e9c | 757 | #endif |
3861aa5c WD |
758 | NetSendPacket(NetTxPacket, pktlen); |
759 | } | |
760 | ||
643d1ab2 | 761 | #if defined(CONFIG_CMD_DHCP) |
3090b7e3 | 762 | static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp) |
3861aa5c | 763 | { |
3e38691e | 764 | uchar *end = popt + BOOTP_HDR_SIZE; |
3861aa5c | 765 | int oplen, size; |
d8d8724b WD |
766 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
767 | int *to_ptr; | |
768 | #endif | |
3861aa5c | 769 | |
232c150a | 770 | while (popt < end && *popt != 0xff) { |
3861aa5c | 771 | oplen = *(popt + 1); |
232c150a WD |
772 | switch (*popt) { |
773 | case 1: | |
049a95a7 | 774 | net_copy_ip(&net_netmask, (popt + 2)); |
232c150a | 775 | break; |
1fe80d79 | 776 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) |
ea287deb | 777 | case 2: /* Time offset */ |
d8d8724b | 778 | to_ptr = &NetTimeOffset; |
3090b7e3 JH |
779 | NetCopyLong((ulong *)to_ptr, (ulong *)(popt + 2)); |
780 | NetTimeOffset = ntohl(NetTimeOffset); | |
ea287deb WD |
781 | break; |
782 | #endif | |
232c150a | 783 | case 3: |
049a95a7 | 784 | net_copy_ip(&net_gateway, (popt + 2)); |
232c150a WD |
785 | break; |
786 | case 6: | |
049a95a7 | 787 | net_copy_ip(&net_dns_server, (popt + 2)); |
1fe80d79 | 788 | #if defined(CONFIG_BOOTP_DNS2) |
3090b7e3 | 789 | if (*(popt + 1) > 4) |
049a95a7 | 790 | net_copy_ip(&net_dns_server2, (popt + 2 + 4)); |
fe389a82 | 791 | #endif |
232c150a WD |
792 | break; |
793 | case 12: | |
3090b7e3 JH |
794 | size = truncate_sz("Host Name", |
795 | sizeof(NetOurHostName), oplen); | |
796 | memcpy(&NetOurHostName, popt + 2, size); | |
232c150a WD |
797 | NetOurHostName[size] = 0; |
798 | break; | |
799 | case 15: /* Ignore Domain Name Option */ | |
800 | break; | |
801 | case 17: | |
3090b7e3 JH |
802 | size = truncate_sz("Root Path", |
803 | sizeof(NetOurRootPath), oplen); | |
804 | memcpy(&NetOurRootPath, popt + 2, size); | |
232c150a WD |
805 | NetOurRootPath[size] = 0; |
806 | break; | |
ee0f60df BR |
807 | case 28: /* Ignore Broadcast Address Option */ |
808 | break; | |
1fe80d79 | 809 | #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) |
ea287deb | 810 | case 42: /* NTP server IP */ |
049a95a7 | 811 | net_copy_ip(&net_ntp_server, (popt + 2)); |
ea287deb WD |
812 | break; |
813 | #endif | |
232c150a | 814 | case 51: |
3090b7e3 | 815 | NetCopyLong(&dhcp_leasetime, (ulong *) (popt + 2)); |
232c150a WD |
816 | break; |
817 | case 53: /* Ignore Message Type Option */ | |
818 | break; | |
819 | case 54: | |
049a95a7 | 820 | net_copy_ip(&dhcp_server_ip, (popt + 2)); |
232c150a WD |
821 | break; |
822 | case 58: /* Ignore Renewal Time Option */ | |
823 | break; | |
824 | case 59: /* Ignore Rebinding Time Option */ | |
825 | break; | |
3b2e4fd9 WD |
826 | case 66: /* Ignore TFTP server name */ |
827 | break; | |
828 | case 67: /* vendor opt bootfile */ | |
829 | /* | |
830 | * I can't use dhcp_vendorex_proc here because I need | |
831 | * to write into the bootp packet - even then I had to | |
832 | * pass the bootp packet pointer into here as the | |
833 | * second arg | |
834 | */ | |
3090b7e3 | 835 | size = truncate_sz("Opt Boot File", |
3b2e4fd9 WD |
836 | sizeof(bp->bp_file), |
837 | oplen); | |
838 | if (bp->bp_file[0] == '\0' && size > 0) { | |
839 | /* | |
840 | * only use vendor boot file if we didn't | |
841 | * receive a boot file in the main non-vendor | |
842 | * part of the packet - god only knows why | |
843 | * some vendors chose not to use this perfectly | |
844 | * good spot to store the boot file (join on | |
845 | * Tru64 Unix) it seems mind bogglingly crazy | |
846 | * to me | |
847 | */ | |
848 | printf("*** WARNING: using vendor " | |
849 | "optional boot file\n"); | |
850 | memcpy(bp->bp_file, popt + 2, size); | |
851 | bp->bp_file[size] = '\0'; | |
852 | } | |
853 | break; | |
232c150a | 854 | default: |
1fe80d79 | 855 | #if defined(CONFIG_BOOTP_VENDOREX) |
3090b7e3 | 856 | if (dhcp_vendorex_proc(popt)) |
8bde7f77 | 857 | break; |
3861aa5c | 858 | #endif |
3090b7e3 JH |
859 | printf("*** Unhandled DHCP Option in OFFER/ACK:" |
860 | " %d\n", *popt); | |
232c150a | 861 | break; |
3861aa5c WD |
862 | } |
863 | popt += oplen + 2; /* Process next option */ | |
864 | } | |
865 | } | |
866 | ||
867 | static int DhcpMessageType(unsigned char *popt) | |
868 | { | |
3090b7e3 | 869 | if (NetReadLong((ulong *)popt) != htonl(BOOTP_VENDOR_MAGIC)) |
3861aa5c WD |
870 | return -1; |
871 | ||
872 | popt += 4; | |
3090b7e3 JH |
873 | while (*popt != 0xff) { |
874 | if (*popt == 53) /* DHCP Message Type */ | |
3861aa5c WD |
875 | return *(popt + 2); |
876 | popt += *(popt + 1) + 2; /* Scan through all options */ | |
877 | } | |
878 | return -1; | |
879 | } | |
880 | ||
3090b7e3 | 881 | static void DhcpSendRequestPkt(struct Bootp_t *bp_offer) |
3861aa5c | 882 | { |
db288a96 | 883 | uchar *pkt, *iphdr; |
3090b7e3 | 884 | struct Bootp_t *bp; |
3861aa5c | 885 | int pktlen, iplen, extlen; |
ae446f56 | 886 | int eth_hdr_size; |
049a95a7 JH |
887 | struct in_addr offered_ip; |
888 | struct in_addr zero_ip; | |
889 | struct in_addr bcast_ip; | |
3861aa5c | 890 | |
0ebf04c6 | 891 | debug("DhcpSendRequestPkt: Sending DHCPREQUEST\n"); |
3861aa5c | 892 | pkt = NetTxPacket; |
3090b7e3 | 893 | memset((void *)pkt, 0, PKTSIZE); |
3861aa5c | 894 | |
ae446f56 JH |
895 | eth_hdr_size = NetSetEther(pkt, NetBcastAddr, PROT_IP); |
896 | pkt += eth_hdr_size; | |
3861aa5c | 897 | |
3090b7e3 | 898 | iphdr = pkt; /* We'll need this later to set proper pkt size */ |
594c26f8 | 899 | pkt += IP_UDP_HDR_SIZE; |
3861aa5c | 900 | |
3090b7e3 | 901 | bp = (struct Bootp_t *)pkt; |
3861aa5c WD |
902 | bp->bp_op = OP_BOOTREQUEST; |
903 | bp->bp_htype = HWT_ETHER; | |
904 | bp->bp_hlen = HWL_ETHER; | |
905 | bp->bp_hops = 0; | |
49f3bdbb | 906 | bp->bp_secs = htons(get_timer(0) / 1000); |
3090b7e3 JH |
907 | /* Do not set the client IP, your IP, or server IP yet, since it |
908 | * hasn't been ACK'ed by the server yet */ | |
e5c794e4 | 909 | |
c6686703 | 910 | /* |
d82718fe WD |
911 | * RFC3046 requires Relay Agents to discard packets with |
912 | * nonzero and offered giaddr | |
913 | */ | |
049a95a7 JH |
914 | zero_ip.s_addr = 0; |
915 | net_write_ip(&bp->bp_giaddr, zero_ip); | |
d82718fe | 916 | |
3090b7e3 | 917 | memcpy(bp->bp_chaddr, NetOurEther, 6); |
3861aa5c WD |
918 | |
919 | /* | |
920 | * ID is the id of the OFFER packet | |
921 | */ | |
922 | ||
923 | NetCopyLong(&bp->bp_id, &bp_offer->bp_id); | |
924 | ||
925 | /* | |
926 | * Copy options from OFFER packet if present | |
927 | */ | |
e5c794e4 JF |
928 | |
929 | /* Copy offered IP into the parameters request list */ | |
049a95a7 JH |
930 | net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr); |
931 | extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST, | |
932 | dhcp_server_ip, offered_ip); | |
3861aa5c | 933 | |
ae446f56 JH |
934 | iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; |
935 | pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; | |
049a95a7 JH |
936 | bcast_ip.s_addr = 0xFFFFFFFFL; |
937 | net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); | |
3861aa5c | 938 | |
d9a2f416 AV |
939 | #ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY |
940 | udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY); | |
941 | #endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */ | |
f9623229 | 942 | debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen); |
3861aa5c WD |
943 | NetSendPacket(NetTxPacket, pktlen); |
944 | } | |
945 | ||
946 | /* | |
947 | * Handle DHCP received packets. | |
948 | */ | |
049a95a7 JH |
949 | static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, |
950 | unsigned src, unsigned len) | |
3861aa5c | 951 | { |
3090b7e3 | 952 | struct Bootp_t *bp = (struct Bootp_t *)pkt; |
3861aa5c | 953 | |
0ebf04c6 | 954 | debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", |
3861aa5c WD |
955 | src, dest, len, dhcp_state); |
956 | ||
3090b7e3 JH |
957 | /* Filter out pkts we don't want */ |
958 | if (BootpCheckPkt(pkt, dest, src, len)) | |
3861aa5c WD |
959 | return; |
960 | ||
3090b7e3 JH |
961 | debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state:" |
962 | " %d\n", src, dest, len, dhcp_state); | |
3861aa5c WD |
963 | |
964 | switch (dhcp_state) { | |
965 | case SELECTING: | |
966 | /* | |
967 | * Wait an appropriate time for any potential DHCPOFFER packets | |
3090b7e3 JH |
968 | * to arrive. Then select one, and generate DHCPREQUEST |
969 | * response. If filename is in format we recognize, assume it | |
970 | * is a valid OFFER from a server we want. | |
3861aa5c | 971 | */ |
0ebf04c6 | 972 | debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file); |
6d0f6bcf | 973 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
3861aa5c | 974 | if (strncmp(bp->bp_file, |
6d0f6bcf | 975 | CONFIG_SYS_BOOTFILE_PREFIX, |
3090b7e3 | 976 | strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) { |
6d0f6bcf | 977 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
3861aa5c | 978 | |
0ebf04c6 | 979 | debug("TRANSITIONING TO REQUESTING STATE\n"); |
3861aa5c | 980 | dhcp_state = REQUESTING; |
759a51b4 | 981 | |
3090b7e3 JH |
982 | if (NetReadLong((ulong *)&bp->bp_vend[0]) == |
983 | htonl(BOOTP_VENDOR_MAGIC)) | |
3b2e4fd9 | 984 | DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp); |
3861aa5c | 985 | |
f59be6e8 | 986 | NetSetTimeout(5000, BootpTimeout); |
3861aa5c | 987 | DhcpSendRequestPkt(bp); |
6d0f6bcf | 988 | #ifdef CONFIG_SYS_BOOTFILE_PREFIX |
3861aa5c | 989 | } |
6d0f6bcf | 990 | #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ |
3861aa5c WD |
991 | |
992 | return; | |
993 | break; | |
994 | case REQUESTING: | |
0ebf04c6 | 995 | debug("DHCP State: REQUESTING\n"); |
3861aa5c | 996 | |
3090b7e3 JH |
997 | if (DhcpMessageType((u8 *)bp->bp_vend) == DHCP_ACK) { |
998 | if (NetReadLong((ulong *)&bp->bp_vend[0]) == | |
999 | htonl(BOOTP_VENDOR_MAGIC)) | |
3b2e4fd9 | 1000 | DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp); |
3090b7e3 JH |
1001 | /* Store net params from reply */ |
1002 | BootpCopyNetParams(bp); | |
3861aa5c | 1003 | dhcp_state = BOUND; |
92ac8acc | 1004 | printf("DHCP client bound to address %pI4 (%lu ms)\n", |
049a95a7 | 1005 | &net_ip, get_timer(bootp_start)); |
573f14fe | 1006 | bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, |
3090b7e3 | 1007 | "bootp_stop"); |
3861aa5c | 1008 | |
e4a3d57d | 1009 | net_auto_load(); |
3861aa5c WD |
1010 | return; |
1011 | } | |
1012 | break; | |
51dfe138 RB |
1013 | case BOUND: |
1014 | /* DHCP client bound to address */ | |
1015 | break; | |
3861aa5c | 1016 | default: |
3090b7e3 | 1017 | puts("DHCP: INVALID STATE\n"); |
3861aa5c WD |
1018 | break; |
1019 | } | |
1020 | ||
1021 | } | |
1022 | ||
1023 | void DhcpRequest(void) | |
1024 | { | |
1025 | BootpRequest(); | |
1026 | } | |
992742a5 | 1027 | #endif /* CONFIG_CMD_DHCP */ |