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wdenk3861aa52002-09-27 23:19:37 +00001/*
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
wdenk29e7f5a2004-03-12 00:14:09 +00008 * Copyright 2000-2004 Wolfgang Denk, wd@denx.de
wdenk3861aa52002-09-27 23:19:37 +00009 */
10
wdenk3861aa52002-09-27 23:19:37 +000011#include <common.h>
12#include <command.h>
13#include <net.h>
14#include "bootp.h"
15#include "tftp.h"
wdenk29e7f5a2004-03-12 00:14:09 +000016#include "nfs.h"
wdenk3861aa52002-09-27 23:19:37 +000017#ifdef CONFIG_STATUS_LED
18#include <status_led.h>
19#endif
20
wdenk29e7f5a2004-03-12 00:14:09 +000021#define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */
wdenk3861aa52002-09-27 23:19:37 +000022
Bartlomiej Sieka56668462008-10-01 15:26:28 +020023#define TIMEOUT 5000UL /* Milliseconds before trying BOOTP again */
wdenk29e7f5a2004-03-12 00:14:09 +000024#ifndef CONFIG_NET_RETRY_COUNT
wdenk3861aa52002-09-27 23:19:37 +000025# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
26#else
wdenk29e7f5a2004-03-12 00:14:09 +000027# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
wdenk3861aa52002-09-27 23:19:37 +000028#endif
29
30#define PORT_BOOTPS 67 /* BOOTP server UDP port */
31#define PORT_BOOTPC 68 /* BOOTP client UDP port */
32
33#ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */
wdenk29e7f5a2004-03-12 00:14:09 +000034#define CONFIG_DHCP_MIN_EXT_LEN 64
wdenk3861aa52002-09-27 23:19:37 +000035#endif
36
37ulong BootpID;
38int BootpTry;
39#ifdef CONFIG_BOOTP_RANDOM_DELAY
40ulong seed1, seed2;
41#endif
42
Jon Loeliger54f35c22007-07-09 17:45:14 -050043#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +000044dhcp_state_t dhcp_state = INIT;
wdenk4e112c12003-06-03 23:54:09 +000045unsigned long dhcp_leasetime = 0;
stroese5fa6e902003-04-10 13:26:44 +000046IPaddr_t NetDHCPServerIP = 0;
wdenk3861aa52002-09-27 23:19:37 +000047static void DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len);
48
49/* For Debug */
wdenkb02744a2003-04-05 00:53:31 +000050#if 0
51static char *dhcpmsg2str(int type)
wdenk3861aa52002-09-27 23:19:37 +000052{
53 switch (type) {
wdenk29e7f5a2004-03-12 00:14:09 +000054 case 1: return "DHCPDISCOVER"; break;
55 case 2: return "DHCPOFFER"; break;
56 case 3: return "DHCPREQUEST"; break;
57 case 4: return "DHCPDECLINE"; break;
58 case 5: return "DHCPACK"; break;
59 case 6: return "DHCPNACK"; break;
60 case 7: return "DHCPRELEASE"; break;
wdenk3861aa52002-09-27 23:19:37 +000061 default: return "UNKNOWN/INVALID MSG TYPE"; break;
62 }
63}
wdenkb02744a2003-04-05 00:53:31 +000064#endif
wdenk3861aa52002-09-27 23:19:37 +000065
Jon Loeliger5336a762007-07-09 22:08:34 -050066#if defined(CONFIG_BOOTP_VENDOREX)
wdenk3861aa52002-09-27 23:19:37 +000067extern u8 *dhcp_vendorex_prep (u8 *e); /*rtn new e after add own opts. */
68extern u8 *dhcp_vendorex_proc (u8 *e); /*rtn next e if mine,else NULL */
69#endif
70
Jon Loeligera9807e52007-07-10 11:05:02 -050071#endif
wdenk3861aa52002-09-27 23:19:37 +000072
73static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len)
74{
75 Bootp_t *bp = (Bootp_t *) pkt;
76 int retval = 0;
77
78 if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
79 retval = -1;
80 else if (len < sizeof (Bootp_t) - OPT_SIZE)
81 retval = -2;
82 else if (bp->bp_op != OP_BOOTREQUEST &&
83 bp->bp_op != OP_BOOTREPLY &&
84 bp->bp_op != DHCP_OFFER &&
85 bp->bp_op != DHCP_ACK &&
86 bp->bp_op != DHCP_NAK ) {
87 retval = -3;
88 }
89 else if (bp->bp_htype != HWT_ETHER)
90 retval = -4;
91 else if (bp->bp_hlen != HWL_ETHER)
92 retval = -5;
93 else if (NetReadLong((ulong*)&bp->bp_id) != BootpID) {
94 retval = -6;
95 }
96
Robin Getz9e0a4d62009-07-23 03:01:03 -040097 debug("Filtering pkt = %d\n", retval);
wdenk3861aa52002-09-27 23:19:37 +000098
99 return retval;
100}
101
102/*
103 * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
104 */
wdenkb02744a2003-04-05 00:53:31 +0000105static void BootpCopyNetParams(Bootp_t *bp)
wdenk3861aa52002-09-27 23:19:37 +0000106{
wdenk4989f872004-03-14 15:06:13 +0000107 IPaddr_t tmp_ip;
108
wdenk3861aa52002-09-27 23:19:37 +0000109 NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
Wilson Callan22bcd6e2007-07-28 10:56:13 -0400110#if !defined(CONFIG_BOOTP_SERVERIP)
wdenk4989f872004-03-14 15:06:13 +0000111 NetCopyIP(&tmp_ip, &bp->bp_siaddr);
112 if (tmp_ip != 0)
113 NetCopyIP(&NetServerIP, &bp->bp_siaddr);
Mike Frysingerdc166032009-07-18 21:04:08 -0400114 memcpy (NetServerEther, ((Ethernet_t *)NetRxPacket)->et_src, 6);
Wilson Callan22bcd6e2007-07-28 10:56:13 -0400115#endif
wdenk4989f872004-03-14 15:06:13 +0000116 if (strlen(bp->bp_file) > 0)
117 copy_filename (BootFile, bp->bp_file, sizeof(BootFile));
wdenk3861aa52002-09-27 23:19:37 +0000118
Robin Getz9e0a4d62009-07-23 03:01:03 -0400119 debug("Bootfile: %s\n", BootFile);
wdenk3861aa52002-09-27 23:19:37 +0000120
121 /* Propagate to environment:
wdenk57b2d802003-06-27 21:31:46 +0000122 * don't delete exising entry when BOOTP / DHCP reply does
wdenk3861aa52002-09-27 23:19:37 +0000123 * not contain a new value
124 */
125 if (*BootFile) {
126 setenv ("bootfile", BootFile);
127 }
128}
129
130static int truncate_sz (const char *name, int maxlen, int curlen)
131{
132 if (curlen >= maxlen) {
133 printf("*** WARNING: %s is too long (%d - max: %d) - truncated\n",
134 name, curlen, maxlen);
135 curlen = maxlen - 1;
136 }
137 return (curlen);
138}
139
Jon Loeliger54f35c22007-07-09 17:45:14 -0500140#if !defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000141
wdenk29e7f5a2004-03-12 00:14:09 +0000142static void BootpVendorFieldProcess (u8 * ext)
wdenk3861aa52002-09-27 23:19:37 +0000143{
wdenk29e7f5a2004-03-12 00:14:09 +0000144 int size = *(ext + 1);
wdenk3861aa52002-09-27 23:19:37 +0000145
Robin Getz9e0a4d62009-07-23 03:01:03 -0400146 debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext,
wdenk29e7f5a2004-03-12 00:14:09 +0000147 *(ext + 1));
wdenk3861aa52002-09-27 23:19:37 +0000148
wdenk29e7f5a2004-03-12 00:14:09 +0000149 NetBootFileSize = 0;
wdenk3861aa52002-09-27 23:19:37 +0000150
wdenk29e7f5a2004-03-12 00:14:09 +0000151 switch (*ext) {
152 /* Fixed length fields */
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700153 case 1: /* Subnet mask */
wdenk3861aa52002-09-27 23:19:37 +0000154 if (NetOurSubnetMask == 0)
wdenk29e7f5a2004-03-12 00:14:09 +0000155 NetCopyIP (&NetOurSubnetMask, (IPaddr_t *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000156 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700157 case 2: /* Time offset - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000158 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000159 /* Variable length fields */
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700160 case 3: /* Gateways list */
wdenk3861aa52002-09-27 23:19:37 +0000161 if (NetOurGatewayIP == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000162 NetCopyIP (&NetOurGatewayIP, (IPaddr_t *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000163 }
164 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700165 case 4: /* Time server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000166 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700167 case 5: /* IEN-116 name server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000168 break;
169 case 6:
170 if (NetOurDNSIP == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000171 NetCopyIP (&NetOurDNSIP, (IPaddr_t *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000172 }
Jon Loeliger5336a762007-07-09 22:08:34 -0500173#if defined(CONFIG_BOOTP_DNS2)
stroesee0aadfb2003-08-28 14:17:32 +0000174 if ((NetOurDNS2IP == 0) && (size > 4)) {
wdenk29e7f5a2004-03-12 00:14:09 +0000175 NetCopyIP (&NetOurDNS2IP, (IPaddr_t *) (ext + 2 + 4));
stroesee0aadfb2003-08-28 14:17:32 +0000176 }
177#endif
wdenk3861aa52002-09-27 23:19:37 +0000178 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700179 case 7: /* Log server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000180 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700181 case 8: /* Cookie/Quote server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000182 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700183 case 9: /* LPR server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000184 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700185 case 10: /* Impress server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000186 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700187 case 11: /* RPL server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000188 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700189 case 12: /* Host name */
wdenk3861aa52002-09-27 23:19:37 +0000190 if (NetOurHostName[0] == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000191 size = truncate_sz ("Host Name", sizeof (NetOurHostName), size);
192 memcpy (&NetOurHostName, ext + 2, size);
193 NetOurHostName[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000194 }
195 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700196 case 13: /* Boot file size */
wdenk3861aa52002-09-27 23:19:37 +0000197 if (size == 2)
wdenk29e7f5a2004-03-12 00:14:09 +0000198 NetBootFileSize = ntohs (*(ushort *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000199 else if (size == 4)
wdenk29e7f5a2004-03-12 00:14:09 +0000200 NetBootFileSize = ntohl (*(ulong *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000201 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700202 case 14: /* Merit dump file - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000203 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700204 case 15: /* Domain name - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000205 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700206 case 16: /* Swap server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000207 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700208 case 17: /* Root path */
wdenk3861aa52002-09-27 23:19:37 +0000209 if (NetOurRootPath[0] == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000210 size = truncate_sz ("Root Path", sizeof (NetOurRootPath), size);
211 memcpy (&NetOurRootPath, ext + 2, size);
212 NetOurRootPath[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000213 }
214 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700215 case 18: /* Extension path - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000216 /*
wdenk57b2d802003-06-27 21:31:46 +0000217 * This can be used to send the information of the
218 * vendor area in another file that the client can
219 * access via TFTP.
wdenk3861aa52002-09-27 23:19:37 +0000220 */
221 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000222 /* IP host layer fields */
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700223 case 40: /* NIS Domain name */
wdenk3861aa52002-09-27 23:19:37 +0000224 if (NetOurNISDomain[0] == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000225 size = truncate_sz ("NIS Domain Name", sizeof (NetOurNISDomain), size);
226 memcpy (&NetOurNISDomain, ext + 2, size);
227 NetOurNISDomain[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000228 }
229 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000230 /* Application layer fields */
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700231 case 43: /* Vendor specific info - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000232 /*
wdenk57b2d802003-06-27 21:31:46 +0000233 * Binary information to exchange specific
234 * product information.
wdenk3861aa52002-09-27 23:19:37 +0000235 */
236 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000237 /* Reserved (custom) fields (128..254) */
238 }
wdenk3861aa52002-09-27 23:19:37 +0000239}
240
wdenk29e7f5a2004-03-12 00:14:09 +0000241static void BootpVendorProcess (u8 * ext, int size)
wdenk3861aa52002-09-27 23:19:37 +0000242{
wdenk29e7f5a2004-03-12 00:14:09 +0000243 u8 *end = ext + size;
wdenk3861aa52002-09-27 23:19:37 +0000244
Robin Getz9e0a4d62009-07-23 03:01:03 -0400245 debug("[BOOTP] Checking extension (%d bytes)...\n", size);
wdenk3861aa52002-09-27 23:19:37 +0000246
wdenk29e7f5a2004-03-12 00:14:09 +0000247 while ((ext < end) && (*ext != 0xff)) {
248 if (*ext == 0) {
249 ext++;
250 } else {
251 u8 *opt = ext;
252
253 ext += ext[1] + 2;
254 if (ext <= end)
255 BootpVendorFieldProcess (opt);
256 }
wdenk3861aa52002-09-27 23:19:37 +0000257 }
wdenk3861aa52002-09-27 23:19:37 +0000258
Robin Getz9e0a4d62009-07-23 03:01:03 -0400259 debug("[BOOTP] Received fields: \n");
Mike Frysingerd5695f42009-02-17 00:00:53 -0500260 if (NetOurSubnetMask)
Robin Getz9e0a4d62009-07-23 03:01:03 -0400261 debug("NetOurSubnetMask : %pI4\n", &NetOurSubnetMask);
wdenk3861aa52002-09-27 23:19:37 +0000262
Mike Frysingerd5695f42009-02-17 00:00:53 -0500263 if (NetOurGatewayIP)
Robin Getz9e0a4d62009-07-23 03:01:03 -0400264 debug("NetOurGatewayIP : %pI4", &NetOurGatewayIP);
wdenk3861aa52002-09-27 23:19:37 +0000265
Robin Getz9e0a4d62009-07-23 03:01:03 -0400266 if (NetBootFileSize)
267 debug("NetBootFileSize : %d\n", NetBootFileSize);
wdenk3861aa52002-09-27 23:19:37 +0000268
Robin Getz9e0a4d62009-07-23 03:01:03 -0400269 if (NetOurHostName[0])
270 debug("NetOurHostName : %s\n", NetOurHostName);
wdenk3861aa52002-09-27 23:19:37 +0000271
Robin Getz9e0a4d62009-07-23 03:01:03 -0400272 if (NetOurRootPath[0])
273 debug("NetOurRootPath : %s\n", NetOurRootPath);
wdenk3861aa52002-09-27 23:19:37 +0000274
Robin Getz9e0a4d62009-07-23 03:01:03 -0400275 if (NetOurNISDomain[0])
276 debug("NetOurNISDomain : %s\n", NetOurNISDomain);
wdenk3861aa52002-09-27 23:19:37 +0000277
Robin Getz9e0a4d62009-07-23 03:01:03 -0400278 if (NetBootFileSize)
279 debug("NetBootFileSize: %d\n", NetBootFileSize);
wdenk3861aa52002-09-27 23:19:37 +0000280}
wdenk3861aa52002-09-27 23:19:37 +0000281/*
282 * Handle a BOOTP received packet.
283 */
284static void
285BootpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
286{
287 Bootp_t *bp;
288 char *s;
289
Robin Getz9e0a4d62009-07-23 03:01:03 -0400290 debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n",
wdenk3861aa52002-09-27 23:19:37 +0000291 src, dest, len, sizeof (Bootp_t));
292
293 bp = (Bootp_t *)pkt;
294
wdenk29e7f5a2004-03-12 00:14:09 +0000295 if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */
wdenk3861aa52002-09-27 23:19:37 +0000296 return;
297
298 /*
wdenk29e7f5a2004-03-12 00:14:09 +0000299 * Got a good BOOTP reply. Copy the data into our variables.
wdenk3861aa52002-09-27 23:19:37 +0000300 */
301#ifdef CONFIG_STATUS_LED
302 status_led_set (STATUS_LED_BOOT, STATUS_LED_OFF);
303#endif
304
305 BootpCopyNetParams(bp); /* Store net parameters from reply */
306
307 /* Retrieve extended information (we must parse the vendor area) */
308 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200309 BootpVendorProcess((uchar *)&bp->bp_vend[4], len);
wdenk3861aa52002-09-27 23:19:37 +0000310
311 NetSetTimeout(0, (thand_f *)0);
312
Robin Getz9e0a4d62009-07-23 03:01:03 -0400313 debug("Got good BOOTP\n");
wdenk3861aa52002-09-27 23:19:37 +0000314
wdenk6ea1cf02004-02-27 08:20:54 +0000315 if ((s = getenv("autoload")) != NULL) {
316 if (*s == 'n') {
317 /*
318 * Just use BOOTP to configure system;
319 * Do not use TFTP to load the bootfile.
320 */
321 NetState = NETLOOP_SUCCESS;
322 return;
Jon Loeliger54f35c22007-07-09 17:45:14 -0500323#if defined(CONFIG_CMD_NFS)
wdenk6ea1cf02004-02-27 08:20:54 +0000324 } else if (strcmp(s, "NFS") == 0) {
325 /*
326 * Use NFS to load the bootfile.
327 */
328 NfsStart();
329 return;
wdenk00fe1612004-03-14 00:07:33 +0000330#endif
wdenk6ea1cf02004-02-27 08:20:54 +0000331 }
wdenk3861aa52002-09-27 23:19:37 +0000332 }
333
wdenke6466f62003-06-05 19:27:42 +0000334 TftpStart();
wdenk3861aa52002-09-27 23:19:37 +0000335}
Jon Loeligera9807e52007-07-10 11:05:02 -0500336#endif
wdenk3861aa52002-09-27 23:19:37 +0000337
338/*
339 * Timeout on BOOTP/DHCP request.
340 */
341static void
342BootpTimeout(void)
343{
344 if (BootpTry >= TIMEOUT_COUNT) {
345 puts ("\nRetry count exceeded; starting again\n");
346 NetStartAgain ();
347 } else {
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200348 NetSetTimeout (TIMEOUT, BootpTimeout);
wdenk3861aa52002-09-27 23:19:37 +0000349 BootpRequest ();
350 }
351}
352
353/*
354 * Initialize BOOTP extension fields in the request.
355 */
Jon Loeliger54f35c22007-07-09 17:45:14 -0500356#if defined(CONFIG_CMD_DHCP)
wdenk29e7f5a2004-03-12 00:14:09 +0000357static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP)
wdenk3861aa52002-09-27 23:19:37 +0000358{
wdenk29e7f5a2004-03-12 00:14:09 +0000359 u8 *start = e;
360 u8 *cnt;
361
Jon Loeliger5336a762007-07-09 22:08:34 -0500362#if defined(CONFIG_BOOTP_VENDOREX)
wdenk29e7f5a2004-03-12 00:14:09 +0000363 u8 *x;
wdenk3861aa52002-09-27 23:19:37 +0000364#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500365#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200366 char *hostname;
stroesee0aadfb2003-08-28 14:17:32 +0000367#endif
wdenk3861aa52002-09-27 23:19:37 +0000368
wdenk29e7f5a2004-03-12 00:14:09 +0000369 *e++ = 99; /* RFC1048 Magic Cookie */
370 *e++ = 130;
371 *e++ = 83;
372 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000373
wdenk29e7f5a2004-03-12 00:14:09 +0000374 *e++ = 53; /* DHCP Message Type */
375 *e++ = 1;
376 *e++ = message_type;
wdenk3861aa52002-09-27 23:19:37 +0000377
wdenk29e7f5a2004-03-12 00:14:09 +0000378 *e++ = 57; /* Maximum DHCP Message Size */
379 *e++ = 2;
380 *e++ = (576 - 312 + OPT_SIZE) >> 8;
381 *e++ = (576 - 312 + OPT_SIZE) & 0xff;
wdenk3861aa52002-09-27 23:19:37 +0000382
wdenk29e7f5a2004-03-12 00:14:09 +0000383 if (ServerID) {
384 int tmp = ntohl (ServerID);
wdenk3861aa52002-09-27 23:19:37 +0000385
wdenk29e7f5a2004-03-12 00:14:09 +0000386 *e++ = 54; /* ServerID */
387 *e++ = 4;
388 *e++ = tmp >> 24;
389 *e++ = tmp >> 16;
390 *e++ = tmp >> 8;
391 *e++ = tmp & 0xff;
392 }
wdenk3861aa52002-09-27 23:19:37 +0000393
wdenk29e7f5a2004-03-12 00:14:09 +0000394 if (RequestedIP) {
395 int tmp = ntohl (RequestedIP);
wdenk3861aa52002-09-27 23:19:37 +0000396
wdenk29e7f5a2004-03-12 00:14:09 +0000397 *e++ = 50; /* Requested IP */
398 *e++ = 4;
399 *e++ = tmp >> 24;
400 *e++ = tmp >> 16;
401 *e++ = tmp >> 8;
402 *e++ = tmp & 0xff;
403 }
Jon Loeliger5336a762007-07-09 22:08:34 -0500404#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
wdenk29e7f5a2004-03-12 00:14:09 +0000405 if ((hostname = getenv ("hostname"))) {
406 int hostnamelen = strlen (hostname);
407
408 *e++ = 12; /* Hostname */
409 *e++ = hostnamelen;
410 memcpy (e, hostname, hostnamelen);
411 e += hostnamelen;
412 }
stroesee0aadfb2003-08-28 14:17:32 +0000413#endif
414
Jon Loeliger5336a762007-07-09 22:08:34 -0500415#if defined(CONFIG_BOOTP_VENDOREX)
wdenk29e7f5a2004-03-12 00:14:09 +0000416 if ((x = dhcp_vendorex_prep (e)))
417 return x - start;
wdenk3861aa52002-09-27 23:19:37 +0000418#endif
419
wdenk29e7f5a2004-03-12 00:14:09 +0000420 *e++ = 55; /* Parameter Request List */
421 cnt = e++; /* Pointer to count of requested items */
422 *cnt = 0;
Jon Loeliger5336a762007-07-09 22:08:34 -0500423#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk29e7f5a2004-03-12 00:14:09 +0000424 *e++ = 1; /* Subnet Mask */
425 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000426#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500427#if defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkb4ad9622005-04-01 00:25:43 +0000428 *e++ = 2;
429 *cnt += 1;
430#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500431#if defined(CONFIG_BOOTP_GATEWAY)
wdenk29e7f5a2004-03-12 00:14:09 +0000432 *e++ = 3; /* Router Option */
433 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000434#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500435#if defined(CONFIG_BOOTP_DNS)
wdenk29e7f5a2004-03-12 00:14:09 +0000436 *e++ = 6; /* DNS Server(s) */
437 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000438#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500439#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk29e7f5a2004-03-12 00:14:09 +0000440 *e++ = 12; /* Hostname */
441 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000442#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500443#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk29e7f5a2004-03-12 00:14:09 +0000444 *e++ = 13; /* Boot File Size */
445 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000446#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500447#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk29e7f5a2004-03-12 00:14:09 +0000448 *e++ = 17; /* Boot path */
449 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000450#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500451#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk29e7f5a2004-03-12 00:14:09 +0000452 *e++ = 40; /* NIS Domain name request */
453 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000454#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500455#if defined(CONFIG_BOOTP_NTPSERVER)
wdenkb4ad9622005-04-01 00:25:43 +0000456 *e++ = 42;
457 *cnt += 1;
458#endif
Jason Liu1c7dca52010-11-14 12:23:09 +0800459 /* no options, so back up to avoid sending an empty request list */
460 if (*cnt == 0)
461 e -= 2;
462
wdenk29e7f5a2004-03-12 00:14:09 +0000463 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000464
wdenk29e7f5a2004-03-12 00:14:09 +0000465 /* Pad to minimal length */
wdenk3861aa52002-09-27 23:19:37 +0000466#ifdef CONFIG_DHCP_MIN_EXT_LEN
Simon Glassa0978eb2011-02-02 15:03:28 -0800467 while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN)
wdenk29e7f5a2004-03-12 00:14:09 +0000468 *e++ = 0;
wdenk3861aa52002-09-27 23:19:37 +0000469#endif
470
wdenk29e7f5a2004-03-12 00:14:09 +0000471 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000472}
473
Jon Loeligera9807e52007-07-10 11:05:02 -0500474#else
wdenk3861aa52002-09-27 23:19:37 +0000475/*
Jon Loeliger5336a762007-07-09 22:08:34 -0500476 * Warning: no field size check - change CONFIG_BOOTP_* at your own risk!
wdenk3861aa52002-09-27 23:19:37 +0000477 */
wdenk29e7f5a2004-03-12 00:14:09 +0000478static int BootpExtended (u8 * e)
wdenk3861aa52002-09-27 23:19:37 +0000479{
wdenk29e7f5a2004-03-12 00:14:09 +0000480 u8 *start = e;
wdenk3861aa52002-09-27 23:19:37 +0000481
wdenk29e7f5a2004-03-12 00:14:09 +0000482 *e++ = 99; /* RFC1048 Magic Cookie */
483 *e++ = 130;
484 *e++ = 83;
485 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000486
Jon Loeliger54f35c22007-07-09 17:45:14 -0500487#if defined(CONFIG_CMD_DHCP)
wdenk29e7f5a2004-03-12 00:14:09 +0000488 *e++ = 53; /* DHCP Message Type */
489 *e++ = 1;
490 *e++ = DHCP_DISCOVER;
wdenk3861aa52002-09-27 23:19:37 +0000491
wdenk29e7f5a2004-03-12 00:14:09 +0000492 *e++ = 57; /* Maximum DHCP Message Size */
493 *e++ = 2;
494 *e++ = (576 - 312 + OPT_SIZE) >> 16;
495 *e++ = (576 - 312 + OPT_SIZE) & 0xff;
Jon Loeligera9807e52007-07-10 11:05:02 -0500496#endif
wdenk3861aa52002-09-27 23:19:37 +0000497
Jon Loeliger5336a762007-07-09 22:08:34 -0500498#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk29e7f5a2004-03-12 00:14:09 +0000499 *e++ = 1; /* Subnet mask request */
500 *e++ = 4;
501 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000502#endif
503
Jon Loeliger5336a762007-07-09 22:08:34 -0500504#if defined(CONFIG_BOOTP_GATEWAY)
wdenk29e7f5a2004-03-12 00:14:09 +0000505 *e++ = 3; /* Default gateway request */
506 *e++ = 4;
507 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000508#endif
509
Jon Loeliger5336a762007-07-09 22:08:34 -0500510#if defined(CONFIG_BOOTP_DNS)
wdenk29e7f5a2004-03-12 00:14:09 +0000511 *e++ = 6; /* Domain Name Server */
512 *e++ = 4;
513 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000514#endif
515
Jon Loeliger5336a762007-07-09 22:08:34 -0500516#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk29e7f5a2004-03-12 00:14:09 +0000517 *e++ = 12; /* Host name request */
518 *e++ = 32;
519 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000520#endif
521
Jon Loeliger5336a762007-07-09 22:08:34 -0500522#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk29e7f5a2004-03-12 00:14:09 +0000523 *e++ = 13; /* Boot file size */
524 *e++ = 2;
525 e += 2;
wdenk3861aa52002-09-27 23:19:37 +0000526#endif
527
Jon Loeliger5336a762007-07-09 22:08:34 -0500528#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk29e7f5a2004-03-12 00:14:09 +0000529 *e++ = 17; /* Boot path */
530 *e++ = 32;
531 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000532#endif
533
Jon Loeliger5336a762007-07-09 22:08:34 -0500534#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk29e7f5a2004-03-12 00:14:09 +0000535 *e++ = 40; /* NIS Domain name request */
536 *e++ = 32;
537 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000538#endif
539
wdenk29e7f5a2004-03-12 00:14:09 +0000540 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000541
wdenk29e7f5a2004-03-12 00:14:09 +0000542 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000543}
Jon Loeligera9807e52007-07-10 11:05:02 -0500544#endif
wdenk3861aa52002-09-27 23:19:37 +0000545
546void
547BootpRequest (void)
548{
549 volatile uchar *pkt, *iphdr;
550 Bootp_t *bp;
551 int ext_len, pktlen, iplen;
552
Jon Loeliger54f35c22007-07-09 17:45:14 -0500553#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000554 dhcp_state = INIT;
555#endif
556
557#ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
558 unsigned char bi_enetaddr[6];
559 int reg;
wdenk3861aa52002-09-27 23:19:37 +0000560 ulong tst1, tst2, sum, m_mask, m_value = 0;
561
562 if (BootpTry ==0) {
563 /* get our mac */
Mike Frysinger79ca1b92009-02-11 18:23:48 -0500564 eth_getenv_enetaddr("ethaddr", bi_enetaddr);
wdenk3861aa52002-09-27 23:19:37 +0000565
Robin Getz9e0a4d62009-07-23 03:01:03 -0400566 debug("BootpRequest => Our Mac: ");
567 for (reg=0; reg<6; reg++)
568 debug("%x%c", bi_enetaddr[reg], reg==5 ? '\n' : ':');
wdenk3861aa52002-09-27 23:19:37 +0000569
570 /* Mac-Manipulation 2 get seed1 */
571 tst1=0;
572 tst2=0;
573 for (reg=2; reg<6; reg++) {
574 tst1 = tst1 << 8;
575 tst1 = tst1 | bi_enetaddr[reg];
576 }
577 for (reg=0; reg<2; reg++) {
578 tst2 = tst2 | bi_enetaddr[reg];
579 tst2 = tst2 << 8;
580 }
581
582 seed1 = tst1^tst2;
583
584 /* Mirror seed1*/
585 m_mask=0x1;
586 for (reg=1;reg<=32;reg++) {
587 m_value |= (m_mask & seed1);
588 seed1 = seed1 >> 1;
589 m_value = m_value << 1;
590 }
591 seed1 = m_value;
592 seed2 = 0xB78D0945;
593 }
594
595 /* Random Number Generator */
596
597 for (reg=0;reg<=0;reg++) {
598 sum = seed1 + seed2;
599 if (sum < seed1 || sum < seed2)
600 sum++;
wdenk57b2d802003-06-27 21:31:46 +0000601 seed2 = seed1;
wdenk3861aa52002-09-27 23:19:37 +0000602 seed1 = sum;
603
604 if (BootpTry<=2) { /* Start with max 1024 * 1ms */
605 sum = sum >> (22-BootpTry);
606 } else { /*After 3rd BOOTP request max 8192 * 1ms */
607 sum = sum >> 19;
608 }
609 }
610
611 printf ("Random delay: %ld ms...\n", sum);
612 for (reg=0; reg <sum; reg++) {
613 udelay(1000); /*Wait 1ms*/
614 }
615#endif /* CONFIG_BOOTP_RANDOM_DELAY */
616
617 printf("BOOTP broadcast %d\n", ++BootpTry);
618 pkt = NetTxPacket;
619 memset ((void*)pkt, 0, PKTSIZE);
620
wdenk145d2c12004-04-15 21:48:45 +0000621 pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP);
wdenk3861aa52002-09-27 23:19:37 +0000622
623 /*
624 * Next line results in incorrect packet size being transmitted, resulting
625 * in errors in some DHCP servers, reporting missing bytes. Size must be
626 * set in packet header after extension length has been determined.
627 * C. Hallinan, DS4.COM, Inc.
628 */
629 /* NetSetIP(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, sizeof (Bootp_t)); */
630 iphdr = pkt; /* We need this later for NetSetIP() */
631 pkt += IP_HDR_SIZE;
632
633 bp = (Bootp_t *)pkt;
634 bp->bp_op = OP_BOOTREQUEST;
635 bp->bp_htype = HWT_ETHER;
636 bp->bp_hlen = HWL_ETHER;
637 bp->bp_hops = 0;
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200638 bp->bp_secs = htons(get_timer(0) / 1000);
wdenk3861aa52002-09-27 23:19:37 +0000639 NetWriteIP(&bp->bp_ciaddr, 0);
640 NetWriteIP(&bp->bp_yiaddr, 0);
641 NetWriteIP(&bp->bp_siaddr, 0);
642 NetWriteIP(&bp->bp_giaddr, 0);
643 memcpy (bp->bp_chaddr, NetOurEther, 6);
644 copy_filename (bp->bp_file, BootFile, sizeof(bp->bp_file));
645
646 /* Request additional information from the BOOTP/DHCP server */
Jon Loeliger54f35c22007-07-09 17:45:14 -0500647#if defined(CONFIG_CMD_DHCP)
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200648 ext_len = DhcpExtended((u8 *)bp->bp_vend, DHCP_DISCOVER, 0, 0);
wdenk3861aa52002-09-27 23:19:37 +0000649#else
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200650 ext_len = BootpExtended((u8 *)bp->bp_vend);
Jon Loeligera9807e52007-07-10 11:05:02 -0500651#endif
wdenk3861aa52002-09-27 23:19:37 +0000652
653 /*
654 * Bootp ID is the lower 4 bytes of our ethernet address
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200655 * plus the current time in ms.
wdenk3861aa52002-09-27 23:19:37 +0000656 */
657 BootpID = ((ulong)NetOurEther[2] << 24)
658 | ((ulong)NetOurEther[3] << 16)
659 | ((ulong)NetOurEther[4] << 8)
660 | (ulong)NetOurEther[5];
661 BootpID += get_timer(0);
wdenk29e7f5a2004-03-12 00:14:09 +0000662 BootpID = htonl(BootpID);
wdenk3861aa52002-09-27 23:19:37 +0000663 NetCopyLong(&bp->bp_id, &BootpID);
664
665 /*
666 * Calculate proper packet lengths taking into account the
667 * variable size of the options field
668 */
Norbert van Bolhuis20a020c2009-06-04 09:39:48 +0200669 pktlen = ((int)(pkt-NetTxPacket)) + BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len;
wdenk3861aa52002-09-27 23:19:37 +0000670 iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len;
671 NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200672 NetSetTimeout(SELECT_TIMEOUT, BootpTimeout);
wdenk3861aa52002-09-27 23:19:37 +0000673
Jon Loeliger54f35c22007-07-09 17:45:14 -0500674#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000675 dhcp_state = SELECTING;
676 NetSetHandler(DhcpHandler);
677#else
678 NetSetHandler(BootpHandler);
Jon Loeligera9807e52007-07-10 11:05:02 -0500679#endif
wdenk3861aa52002-09-27 23:19:37 +0000680 NetSendPacket(NetTxPacket, pktlen);
681}
682
Jon Loeliger54f35c22007-07-09 17:45:14 -0500683#if defined(CONFIG_CMD_DHCP)
Wolfgang Denk012429c2006-03-12 18:26:46 +0100684static void DhcpOptionsProcess (uchar * popt, Bootp_t *bp)
wdenk3861aa52002-09-27 23:19:37 +0000685{
wdenkb02744a2003-04-05 00:53:31 +0000686 uchar *end = popt + BOOTP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000687 int oplen, size;
Wolfgang Denk2b184222009-09-11 09:05:32 +0200688#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
689 int *to_ptr;
690#endif
wdenk3861aa52002-09-27 23:19:37 +0000691
wdenk29e7f5a2004-03-12 00:14:09 +0000692 while (popt < end && *popt != 0xff) {
wdenk3861aa52002-09-27 23:19:37 +0000693 oplen = *(popt + 1);
wdenk29e7f5a2004-03-12 00:14:09 +0000694 switch (*popt) {
695 case 1:
696 NetCopyIP (&NetOurSubnetMask, (popt + 2));
697 break;
Jon Loeliger5336a762007-07-09 22:08:34 -0500698#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkb4ad9622005-04-01 00:25:43 +0000699 case 2: /* Time offset */
Wolfgang Denk2b184222009-09-11 09:05:32 +0200700 to_ptr = &NetTimeOffset;
701 NetCopyLong ((ulong *)to_ptr, (ulong *)(popt + 2));
wdenkb4ad9622005-04-01 00:25:43 +0000702 NetTimeOffset = ntohl (NetTimeOffset);
703 break;
704#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000705 case 3:
706 NetCopyIP (&NetOurGatewayIP, (popt + 2));
707 break;
708 case 6:
709 NetCopyIP (&NetOurDNSIP, (popt + 2));
Jon Loeliger5336a762007-07-09 22:08:34 -0500710#if defined(CONFIG_BOOTP_DNS2)
wdenk29e7f5a2004-03-12 00:14:09 +0000711 if (*(popt + 1) > 4) {
712 NetCopyIP (&NetOurDNS2IP, (popt + 2 + 4));
713 }
stroesee0aadfb2003-08-28 14:17:32 +0000714#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000715 break;
716 case 12:
717 size = truncate_sz ("Host Name", sizeof (NetOurHostName), oplen);
718 memcpy (&NetOurHostName, popt + 2, size);
719 NetOurHostName[size] = 0;
720 break;
721 case 15: /* Ignore Domain Name Option */
722 break;
723 case 17:
724 size = truncate_sz ("Root Path", sizeof (NetOurRootPath), oplen);
725 memcpy (&NetOurRootPath, popt + 2, size);
726 NetOurRootPath[size] = 0;
727 break;
Jon Loeliger5336a762007-07-09 22:08:34 -0500728#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
wdenkb4ad9622005-04-01 00:25:43 +0000729 case 42: /* NTP server IP */
730 NetCopyIP (&NetNtpServerIP, (popt + 2));
731 break;
732#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000733 case 51:
734 NetCopyLong (&dhcp_leasetime, (ulong *) (popt + 2));
735 break;
736 case 53: /* Ignore Message Type Option */
737 break;
738 case 54:
739 NetCopyIP (&NetDHCPServerIP, (popt + 2));
740 break;
741 case 58: /* Ignore Renewal Time Option */
742 break;
743 case 59: /* Ignore Rebinding Time Option */
744 break;
Wolfgang Denk012429c2006-03-12 18:26:46 +0100745 case 66: /* Ignore TFTP server name */
746 break;
747 case 67: /* vendor opt bootfile */
748 /*
749 * I can't use dhcp_vendorex_proc here because I need
750 * to write into the bootp packet - even then I had to
751 * pass the bootp packet pointer into here as the
752 * second arg
753 */
754 size = truncate_sz ("Opt Boot File",
755 sizeof(bp->bp_file),
756 oplen);
757 if (bp->bp_file[0] == '\0' && size > 0) {
758 /*
759 * only use vendor boot file if we didn't
760 * receive a boot file in the main non-vendor
761 * part of the packet - god only knows why
762 * some vendors chose not to use this perfectly
763 * good spot to store the boot file (join on
764 * Tru64 Unix) it seems mind bogglingly crazy
765 * to me
766 */
767 printf("*** WARNING: using vendor "
768 "optional boot file\n");
769 memcpy(bp->bp_file, popt + 2, size);
770 bp->bp_file[size] = '\0';
771 }
772 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000773 default:
Jon Loeliger5336a762007-07-09 22:08:34 -0500774#if defined(CONFIG_BOOTP_VENDOREX)
wdenk29e7f5a2004-03-12 00:14:09 +0000775 if (dhcp_vendorex_proc (popt))
wdenk57b2d802003-06-27 21:31:46 +0000776 break;
wdenk3861aa52002-09-27 23:19:37 +0000777#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000778 printf ("*** Unhandled DHCP Option in OFFER/ACK: %d\n", *popt);
779 break;
wdenk3861aa52002-09-27 23:19:37 +0000780 }
781 popt += oplen + 2; /* Process next option */
782 }
783}
784
785static int DhcpMessageType(unsigned char *popt)
786{
787 if (NetReadLong((ulong*)popt) != htonl(BOOTP_VENDOR_MAGIC))
788 return -1;
789
790 popt += 4;
791 while ( *popt != 0xff ) {
792 if ( *popt == 53 ) /* DHCP Message Type */
793 return *(popt + 2);
794 popt += *(popt + 1) + 2; /* Scan through all options */
795 }
796 return -1;
797}
798
wdenkb02744a2003-04-05 00:53:31 +0000799static void DhcpSendRequestPkt(Bootp_t *bp_offer)
wdenk3861aa52002-09-27 23:19:37 +0000800{
801 volatile uchar *pkt, *iphdr;
802 Bootp_t *bp;
803 int pktlen, iplen, extlen;
wdenkcc1e2562003-03-06 13:39:27 +0000804 IPaddr_t OfferedIP;
wdenk3861aa52002-09-27 23:19:37 +0000805
Robin Getz9e0a4d62009-07-23 03:01:03 -0400806 debug("DhcpSendRequestPkt: Sending DHCPREQUEST\n");
wdenk3861aa52002-09-27 23:19:37 +0000807 pkt = NetTxPacket;
808 memset ((void*)pkt, 0, PKTSIZE);
809
wdenk145d2c12004-04-15 21:48:45 +0000810 pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP);
wdenk3861aa52002-09-27 23:19:37 +0000811
812 iphdr = pkt; /* We'll need this later to set proper pkt size */
813 pkt += IP_HDR_SIZE;
814
815 bp = (Bootp_t *)pkt;
816 bp->bp_op = OP_BOOTREQUEST;
817 bp->bp_htype = HWT_ETHER;
818 bp->bp_hlen = HWL_ETHER;
819 bp->bp_hops = 0;
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200820 bp->bp_secs = htons(get_timer(0) / 1000);
Justin Flammia01f256b2007-10-29 17:40:35 -0400821 /* Do not set the client IP, your IP, or server IP yet, since it hasn't been ACK'ed by
822 * the server yet */
823
Wolfgang Denk8a933fb2006-10-12 00:01:08 +0200824 /*
Wolfgang Denk68e83a82006-10-09 01:26:14 +0200825 * RFC3046 requires Relay Agents to discard packets with
826 * nonzero and offered giaddr
827 */
828 NetWriteIP(&bp->bp_giaddr, 0);
829
wdenk3861aa52002-09-27 23:19:37 +0000830 memcpy (bp->bp_chaddr, NetOurEther, 6);
831
832 /*
833 * ID is the id of the OFFER packet
834 */
835
836 NetCopyLong(&bp->bp_id, &bp_offer->bp_id);
837
838 /*
839 * Copy options from OFFER packet if present
840 */
Justin Flammia01f256b2007-10-29 17:40:35 -0400841
842 /* Copy offered IP into the parameters request list */
843 NetCopyIP(&OfferedIP, &bp_offer->bp_yiaddr);
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200844 extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP);
wdenk3861aa52002-09-27 23:19:37 +0000845
Norbert van Bolhuis20a020c2009-06-04 09:39:48 +0200846 pktlen = ((int)(pkt-NetTxPacket)) + BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
wdenk3861aa52002-09-27 23:19:37 +0000847 iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
848 NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
849
Robin Getz9e0a4d62009-07-23 03:01:03 -0400850 debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen);
Aras Vaichas72aa3f32008-03-26 09:43:57 +1100851#ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY
852 udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY);
853#endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */
wdenk3861aa52002-09-27 23:19:37 +0000854 NetSendPacket(NetTxPacket, pktlen);
855}
856
857/*
858 * Handle DHCP received packets.
859 */
860static void
861DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
862{
863 Bootp_t *bp = (Bootp_t *)pkt;
864
Robin Getz9e0a4d62009-07-23 03:01:03 -0400865 debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
wdenk3861aa52002-09-27 23:19:37 +0000866 src, dest, len, dhcp_state);
867
wdenk29e7f5a2004-03-12 00:14:09 +0000868 if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */
wdenk3861aa52002-09-27 23:19:37 +0000869 return;
870
Robin Getz9e0a4d62009-07-23 03:01:03 -0400871 debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: %d\n",
wdenk3861aa52002-09-27 23:19:37 +0000872 src, dest, len, dhcp_state);
873
874 switch (dhcp_state) {
875 case SELECTING:
876 /*
877 * Wait an appropriate time for any potential DHCPOFFER packets
878 * to arrive. Then select one, and generate DHCPREQUEST response.
879 * If filename is in format we recognize, assume it is a valid
880 * OFFER from a server we want.
881 */
Robin Getz9e0a4d62009-07-23 03:01:03 -0400882 debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200883#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +0000884 if (strncmp(bp->bp_file,
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200885 CONFIG_SYS_BOOTFILE_PREFIX,
886 strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0 ) {
887#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +0000888
Robin Getz9e0a4d62009-07-23 03:01:03 -0400889 debug("TRANSITIONING TO REQUESTING STATE\n");
wdenk3861aa52002-09-27 23:19:37 +0000890 dhcp_state = REQUESTING;
stroese5fa6e902003-04-10 13:26:44 +0000891
wdenk3861aa52002-09-27 23:19:37 +0000892 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk012429c2006-03-12 18:26:46 +0100893 DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp);
wdenk3861aa52002-09-27 23:19:37 +0000894
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200895 NetSetTimeout(TIMEOUT, BootpTimeout);
wdenk3861aa52002-09-27 23:19:37 +0000896 DhcpSendRequestPkt(bp);
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200897#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +0000898 }
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200899#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +0000900
901 return;
902 break;
903 case REQUESTING:
Robin Getz9e0a4d62009-07-23 03:01:03 -0400904 debug("DHCP State: REQUESTING\n");
wdenk3861aa52002-09-27 23:19:37 +0000905
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200906 if ( DhcpMessageType((u8 *)bp->bp_vend) == DHCP_ACK ) {
wdenk3861aa52002-09-27 23:19:37 +0000907 char *s;
908
909 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk012429c2006-03-12 18:26:46 +0100910 DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp);
wdenk29e7f5a2004-03-12 00:14:09 +0000911 BootpCopyNetParams(bp); /* Store net params from reply */
wdenk3861aa52002-09-27 23:19:37 +0000912 dhcp_state = BOUND;
Mike Frysingerd5695f42009-02-17 00:00:53 -0500913 printf ("DHCP client bound to address %pI4\n", &NetOurIP);
wdenk3861aa52002-09-27 23:19:37 +0000914
915 /* Obey the 'autoload' setting */
wdenk6ea1cf02004-02-27 08:20:54 +0000916 if ((s = getenv("autoload")) != NULL) {
917 if (*s == 'n') {
918 /*
919 * Just use BOOTP to configure system;
920 * Do not use TFTP to load the bootfile.
921 */
922 NetState = NETLOOP_SUCCESS;
923 return;
Jon Loeliger54f35c22007-07-09 17:45:14 -0500924#if defined(CONFIG_CMD_NFS)
wdenk6ea1cf02004-02-27 08:20:54 +0000925 } else if (strcmp(s, "NFS") == 0) {
926 /*
927 * Use NFS to load the bootfile.
928 */
929 NfsStart();
930 return;
wdenk00fe1612004-03-14 00:07:33 +0000931#endif
wdenk6ea1cf02004-02-27 08:20:54 +0000932 }
wdenk3861aa52002-09-27 23:19:37 +0000933 }
wdenke6466f62003-06-05 19:27:42 +0000934 TftpStart();
wdenk3861aa52002-09-27 23:19:37 +0000935 return;
936 }
937 break;
Remy Bohmer03a44492008-08-20 11:30:28 +0200938 case BOUND:
939 /* DHCP client bound to address */
940 break;
wdenk3861aa52002-09-27 23:19:37 +0000941 default:
wdenk42c05472004-03-23 22:14:11 +0000942 puts ("DHCP: INVALID STATE\n");
wdenk3861aa52002-09-27 23:19:37 +0000943 break;
944 }
945
946}
947
948void DhcpRequest(void)
949{
950 BootpRequest();
951}
Wolfgang Denkf7a7f082007-11-03 23:09:27 +0100952#endif /* CONFIG_CMD_DHCP */