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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;
Luca Ceresoli428ab362011-04-18 06:19:50 +000047static void DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
48 unsigned len);
wdenk3861aa52002-09-27 23:19:37 +000049
50/* For Debug */
wdenkb02744a2003-04-05 00:53:31 +000051#if 0
52static char *dhcpmsg2str(int type)
wdenk3861aa52002-09-27 23:19:37 +000053{
54 switch (type) {
wdenk29e7f5a2004-03-12 00:14:09 +000055 case 1: return "DHCPDISCOVER"; break;
56 case 2: return "DHCPOFFER"; break;
57 case 3: return "DHCPREQUEST"; break;
58 case 4: return "DHCPDECLINE"; break;
59 case 5: return "DHCPACK"; break;
60 case 6: return "DHCPNACK"; break;
61 case 7: return "DHCPRELEASE"; break;
wdenk3861aa52002-09-27 23:19:37 +000062 default: return "UNKNOWN/INVALID MSG TYPE"; break;
63 }
64}
wdenkb02744a2003-04-05 00:53:31 +000065#endif
wdenk3861aa52002-09-27 23:19:37 +000066
Jon Loeliger5336a762007-07-09 22:08:34 -050067#if defined(CONFIG_BOOTP_VENDOREX)
wdenk3861aa52002-09-27 23:19:37 +000068extern u8 *dhcp_vendorex_prep (u8 *e); /*rtn new e after add own opts. */
69extern u8 *dhcp_vendorex_proc (u8 *e); /*rtn next e if mine,else NULL */
70#endif
71
Jon Loeligera9807e52007-07-10 11:05:02 -050072#endif
wdenk3861aa52002-09-27 23:19:37 +000073
74static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len)
75{
76 Bootp_t *bp = (Bootp_t *) pkt;
77 int retval = 0;
78
79 if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
80 retval = -1;
81 else if (len < sizeof (Bootp_t) - OPT_SIZE)
82 retval = -2;
83 else if (bp->bp_op != OP_BOOTREQUEST &&
84 bp->bp_op != OP_BOOTREPLY &&
85 bp->bp_op != DHCP_OFFER &&
86 bp->bp_op != DHCP_ACK &&
87 bp->bp_op != DHCP_NAK ) {
88 retval = -3;
89 }
90 else if (bp->bp_htype != HWT_ETHER)
91 retval = -4;
92 else if (bp->bp_hlen != HWL_ETHER)
93 retval = -5;
94 else if (NetReadLong((ulong*)&bp->bp_id) != BootpID) {
95 retval = -6;
96 }
97
Robin Getz9e0a4d62009-07-23 03:01:03 -040098 debug("Filtering pkt = %d\n", retval);
wdenk3861aa52002-09-27 23:19:37 +000099
100 return retval;
101}
102
103/*
104 * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
105 */
wdenkb02744a2003-04-05 00:53:31 +0000106static void BootpCopyNetParams(Bootp_t *bp)
wdenk3861aa52002-09-27 23:19:37 +0000107{
wdenk4989f872004-03-14 15:06:13 +0000108 IPaddr_t tmp_ip;
109
wdenk3861aa52002-09-27 23:19:37 +0000110 NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
Wilson Callan22bcd6e2007-07-28 10:56:13 -0400111#if !defined(CONFIG_BOOTP_SERVERIP)
wdenk4989f872004-03-14 15:06:13 +0000112 NetCopyIP(&tmp_ip, &bp->bp_siaddr);
113 if (tmp_ip != 0)
114 NetCopyIP(&NetServerIP, &bp->bp_siaddr);
Mike Frysingerdc166032009-07-18 21:04:08 -0400115 memcpy (NetServerEther, ((Ethernet_t *)NetRxPacket)->et_src, 6);
Wilson Callan22bcd6e2007-07-28 10:56:13 -0400116#endif
wdenk4989f872004-03-14 15:06:13 +0000117 if (strlen(bp->bp_file) > 0)
118 copy_filename (BootFile, bp->bp_file, sizeof(BootFile));
wdenk3861aa52002-09-27 23:19:37 +0000119
Robin Getz9e0a4d62009-07-23 03:01:03 -0400120 debug("Bootfile: %s\n", BootFile);
wdenk3861aa52002-09-27 23:19:37 +0000121
122 /* Propagate to environment:
wdenk57b2d802003-06-27 21:31:46 +0000123 * don't delete exising entry when BOOTP / DHCP reply does
wdenk3861aa52002-09-27 23:19:37 +0000124 * not contain a new value
125 */
126 if (*BootFile) {
127 setenv ("bootfile", BootFile);
128 }
129}
130
131static int truncate_sz (const char *name, int maxlen, int curlen)
132{
133 if (curlen >= maxlen) {
134 printf("*** WARNING: %s is too long (%d - max: %d) - truncated\n",
135 name, curlen, maxlen);
136 curlen = maxlen - 1;
137 }
138 return (curlen);
139}
140
Simon Glassab068eb2011-06-13 16:13:12 -0700141/*
142 * Check if autoload is enabled. If so, use either NFS or TFTP to download
143 * the boot file.
144 */
145static void auto_load(void)
146{
147 const char *s = getenv("autoload");
148
149 if (s != NULL) {
150 if (*s == 'n') {
151 /*
152 * Just use BOOTP to configure system;
153 * Do not use TFTP to load the bootfile.
154 */
155 NetState = NETLOOP_SUCCESS;
156 return;
157 }
158#if defined(CONFIG_CMD_NFS)
159 if (strcmp(s, "NFS") == 0) {
160 /*
161 * Use NFS to load the bootfile.
162 */
163 NfsStart();
164 return;
165 }
166#endif
167 TftpStart();
168 }
169}
170
Jon Loeliger54f35c22007-07-09 17:45:14 -0500171#if !defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000172
wdenk29e7f5a2004-03-12 00:14:09 +0000173static void BootpVendorFieldProcess (u8 * ext)
wdenk3861aa52002-09-27 23:19:37 +0000174{
wdenk29e7f5a2004-03-12 00:14:09 +0000175 int size = *(ext + 1);
wdenk3861aa52002-09-27 23:19:37 +0000176
Robin Getz9e0a4d62009-07-23 03:01:03 -0400177 debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext,
wdenk29e7f5a2004-03-12 00:14:09 +0000178 *(ext + 1));
wdenk3861aa52002-09-27 23:19:37 +0000179
wdenk29e7f5a2004-03-12 00:14:09 +0000180 NetBootFileSize = 0;
wdenk3861aa52002-09-27 23:19:37 +0000181
wdenk29e7f5a2004-03-12 00:14:09 +0000182 switch (*ext) {
183 /* Fixed length fields */
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700184 case 1: /* Subnet mask */
wdenk3861aa52002-09-27 23:19:37 +0000185 if (NetOurSubnetMask == 0)
wdenk29e7f5a2004-03-12 00:14:09 +0000186 NetCopyIP (&NetOurSubnetMask, (IPaddr_t *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000187 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700188 case 2: /* Time offset - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000189 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000190 /* Variable length fields */
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700191 case 3: /* Gateways list */
wdenk3861aa52002-09-27 23:19:37 +0000192 if (NetOurGatewayIP == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000193 NetCopyIP (&NetOurGatewayIP, (IPaddr_t *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000194 }
195 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700196 case 4: /* Time server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000197 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700198 case 5: /* IEN-116 name server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000199 break;
200 case 6:
201 if (NetOurDNSIP == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000202 NetCopyIP (&NetOurDNSIP, (IPaddr_t *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000203 }
Jon Loeliger5336a762007-07-09 22:08:34 -0500204#if defined(CONFIG_BOOTP_DNS2)
stroesee0aadfb2003-08-28 14:17:32 +0000205 if ((NetOurDNS2IP == 0) && (size > 4)) {
wdenk29e7f5a2004-03-12 00:14:09 +0000206 NetCopyIP (&NetOurDNS2IP, (IPaddr_t *) (ext + 2 + 4));
stroesee0aadfb2003-08-28 14:17:32 +0000207 }
208#endif
wdenk3861aa52002-09-27 23:19:37 +0000209 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700210 case 7: /* Log server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000211 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700212 case 8: /* Cookie/Quote server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000213 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700214 case 9: /* LPR server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000215 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700216 case 10: /* Impress server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000217 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700218 case 11: /* RPL server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000219 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700220 case 12: /* Host name */
wdenk3861aa52002-09-27 23:19:37 +0000221 if (NetOurHostName[0] == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000222 size = truncate_sz ("Host Name", sizeof (NetOurHostName), size);
223 memcpy (&NetOurHostName, ext + 2, size);
224 NetOurHostName[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000225 }
226 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700227 case 13: /* Boot file size */
wdenk3861aa52002-09-27 23:19:37 +0000228 if (size == 2)
wdenk29e7f5a2004-03-12 00:14:09 +0000229 NetBootFileSize = ntohs (*(ushort *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000230 else if (size == 4)
wdenk29e7f5a2004-03-12 00:14:09 +0000231 NetBootFileSize = ntohl (*(ulong *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000232 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700233 case 14: /* Merit dump file - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000234 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700235 case 15: /* Domain name - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000236 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700237 case 16: /* Swap server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000238 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700239 case 17: /* Root path */
wdenk3861aa52002-09-27 23:19:37 +0000240 if (NetOurRootPath[0] == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000241 size = truncate_sz ("Root Path", sizeof (NetOurRootPath), size);
242 memcpy (&NetOurRootPath, ext + 2, size);
243 NetOurRootPath[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000244 }
245 break;
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700246 case 18: /* Extension path - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000247 /*
wdenk57b2d802003-06-27 21:31:46 +0000248 * This can be used to send the information of the
249 * vendor area in another file that the client can
250 * access via TFTP.
wdenk3861aa52002-09-27 23:19:37 +0000251 */
252 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000253 /* IP host layer fields */
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700254 case 40: /* NIS Domain name */
wdenk3861aa52002-09-27 23:19:37 +0000255 if (NetOurNISDomain[0] == 0) {
wdenk29e7f5a2004-03-12 00:14:09 +0000256 size = truncate_sz ("NIS Domain Name", sizeof (NetOurNISDomain), size);
257 memcpy (&NetOurNISDomain, ext + 2, size);
258 NetOurNISDomain[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000259 }
260 break;
Luuk Paulussen6380e012011-05-16 18:29:19 +0000261#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
262 case 42: /* NTP server IP */
263 NetCopyIP(&NetNtpServerIP, (IPaddr_t *) (ext + 2));
264 break;
265#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000266 /* Application layer fields */
Wolfgang Denk35f734f2008-04-13 09:59:26 -0700267 case 43: /* Vendor specific info - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000268 /*
wdenk57b2d802003-06-27 21:31:46 +0000269 * Binary information to exchange specific
270 * product information.
wdenk3861aa52002-09-27 23:19:37 +0000271 */
272 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000273 /* Reserved (custom) fields (128..254) */
274 }
wdenk3861aa52002-09-27 23:19:37 +0000275}
276
wdenk29e7f5a2004-03-12 00:14:09 +0000277static void BootpVendorProcess (u8 * ext, int size)
wdenk3861aa52002-09-27 23:19:37 +0000278{
wdenk29e7f5a2004-03-12 00:14:09 +0000279 u8 *end = ext + size;
wdenk3861aa52002-09-27 23:19:37 +0000280
Robin Getz9e0a4d62009-07-23 03:01:03 -0400281 debug("[BOOTP] Checking extension (%d bytes)...\n", size);
wdenk3861aa52002-09-27 23:19:37 +0000282
wdenk29e7f5a2004-03-12 00:14:09 +0000283 while ((ext < end) && (*ext != 0xff)) {
284 if (*ext == 0) {
285 ext++;
286 } else {
287 u8 *opt = ext;
288
289 ext += ext[1] + 2;
290 if (ext <= end)
291 BootpVendorFieldProcess (opt);
292 }
wdenk3861aa52002-09-27 23:19:37 +0000293 }
wdenk3861aa52002-09-27 23:19:37 +0000294
Robin Getz9e0a4d62009-07-23 03:01:03 -0400295 debug("[BOOTP] Received fields: \n");
Mike Frysingerd5695f42009-02-17 00:00:53 -0500296 if (NetOurSubnetMask)
Robin Getz9e0a4d62009-07-23 03:01:03 -0400297 debug("NetOurSubnetMask : %pI4\n", &NetOurSubnetMask);
wdenk3861aa52002-09-27 23:19:37 +0000298
Mike Frysingerd5695f42009-02-17 00:00:53 -0500299 if (NetOurGatewayIP)
Robin Getz9e0a4d62009-07-23 03:01:03 -0400300 debug("NetOurGatewayIP : %pI4", &NetOurGatewayIP);
wdenk3861aa52002-09-27 23:19:37 +0000301
Robin Getz9e0a4d62009-07-23 03:01:03 -0400302 if (NetBootFileSize)
303 debug("NetBootFileSize : %d\n", NetBootFileSize);
wdenk3861aa52002-09-27 23:19:37 +0000304
Robin Getz9e0a4d62009-07-23 03:01:03 -0400305 if (NetOurHostName[0])
306 debug("NetOurHostName : %s\n", NetOurHostName);
wdenk3861aa52002-09-27 23:19:37 +0000307
Robin Getz9e0a4d62009-07-23 03:01:03 -0400308 if (NetOurRootPath[0])
309 debug("NetOurRootPath : %s\n", NetOurRootPath);
wdenk3861aa52002-09-27 23:19:37 +0000310
Robin Getz9e0a4d62009-07-23 03:01:03 -0400311 if (NetOurNISDomain[0])
312 debug("NetOurNISDomain : %s\n", NetOurNISDomain);
wdenk3861aa52002-09-27 23:19:37 +0000313
Robin Getz9e0a4d62009-07-23 03:01:03 -0400314 if (NetBootFileSize)
315 debug("NetBootFileSize: %d\n", NetBootFileSize);
Luuk Paulussen6380e012011-05-16 18:29:19 +0000316
317#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
318 if (NetNtpServerIP)
319 debug("NetNtpServerIP : %pI4\n", &NetNtpServerIP);
320#endif
wdenk3861aa52002-09-27 23:19:37 +0000321}
Simon Glassab068eb2011-06-13 16:13:12 -0700322
wdenk3861aa52002-09-27 23:19:37 +0000323/*
324 * Handle a BOOTP received packet.
325 */
326static void
Luca Ceresoli428ab362011-04-18 06:19:50 +0000327BootpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
328 unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000329{
330 Bootp_t *bp;
wdenk3861aa52002-09-27 23:19:37 +0000331
Robin Getz9e0a4d62009-07-23 03:01:03 -0400332 debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n",
wdenk3861aa52002-09-27 23:19:37 +0000333 src, dest, len, sizeof (Bootp_t));
334
335 bp = (Bootp_t *)pkt;
336
wdenk29e7f5a2004-03-12 00:14:09 +0000337 if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */
wdenk3861aa52002-09-27 23:19:37 +0000338 return;
339
340 /*
wdenk29e7f5a2004-03-12 00:14:09 +0000341 * Got a good BOOTP reply. Copy the data into our variables.
wdenk3861aa52002-09-27 23:19:37 +0000342 */
343#ifdef CONFIG_STATUS_LED
344 status_led_set (STATUS_LED_BOOT, STATUS_LED_OFF);
345#endif
346
347 BootpCopyNetParams(bp); /* Store net parameters from reply */
348
349 /* Retrieve extended information (we must parse the vendor area) */
350 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200351 BootpVendorProcess((uchar *)&bp->bp_vend[4], len);
wdenk3861aa52002-09-27 23:19:37 +0000352
353 NetSetTimeout(0, (thand_f *)0);
354
Robin Getz9e0a4d62009-07-23 03:01:03 -0400355 debug("Got good BOOTP\n");
wdenk3861aa52002-09-27 23:19:37 +0000356
Simon Glassab068eb2011-06-13 16:13:12 -0700357 auto_load();
wdenk3861aa52002-09-27 23:19:37 +0000358}
Jon Loeligera9807e52007-07-10 11:05:02 -0500359#endif
wdenk3861aa52002-09-27 23:19:37 +0000360
361/*
362 * Timeout on BOOTP/DHCP request.
363 */
364static void
365BootpTimeout(void)
366{
367 if (BootpTry >= TIMEOUT_COUNT) {
368 puts ("\nRetry count exceeded; starting again\n");
369 NetStartAgain ();
370 } else {
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200371 NetSetTimeout (TIMEOUT, BootpTimeout);
wdenk3861aa52002-09-27 23:19:37 +0000372 BootpRequest ();
373 }
374}
375
376/*
377 * Initialize BOOTP extension fields in the request.
378 */
Jon Loeliger54f35c22007-07-09 17:45:14 -0500379#if defined(CONFIG_CMD_DHCP)
wdenk29e7f5a2004-03-12 00:14:09 +0000380static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP)
wdenk3861aa52002-09-27 23:19:37 +0000381{
wdenk29e7f5a2004-03-12 00:14:09 +0000382 u8 *start = e;
383 u8 *cnt;
384
Jon Loeliger5336a762007-07-09 22:08:34 -0500385#if defined(CONFIG_BOOTP_VENDOREX)
wdenk29e7f5a2004-03-12 00:14:09 +0000386 u8 *x;
wdenk3861aa52002-09-27 23:19:37 +0000387#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500388#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200389 char *hostname;
stroesee0aadfb2003-08-28 14:17:32 +0000390#endif
wdenk3861aa52002-09-27 23:19:37 +0000391
wdenk29e7f5a2004-03-12 00:14:09 +0000392 *e++ = 99; /* RFC1048 Magic Cookie */
393 *e++ = 130;
394 *e++ = 83;
395 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000396
wdenk29e7f5a2004-03-12 00:14:09 +0000397 *e++ = 53; /* DHCP Message Type */
398 *e++ = 1;
399 *e++ = message_type;
wdenk3861aa52002-09-27 23:19:37 +0000400
wdenk29e7f5a2004-03-12 00:14:09 +0000401 *e++ = 57; /* Maximum DHCP Message Size */
402 *e++ = 2;
403 *e++ = (576 - 312 + OPT_SIZE) >> 8;
404 *e++ = (576 - 312 + OPT_SIZE) & 0xff;
wdenk3861aa52002-09-27 23:19:37 +0000405
wdenk29e7f5a2004-03-12 00:14:09 +0000406 if (ServerID) {
407 int tmp = ntohl (ServerID);
wdenk3861aa52002-09-27 23:19:37 +0000408
wdenk29e7f5a2004-03-12 00:14:09 +0000409 *e++ = 54; /* ServerID */
410 *e++ = 4;
411 *e++ = tmp >> 24;
412 *e++ = tmp >> 16;
413 *e++ = tmp >> 8;
414 *e++ = tmp & 0xff;
415 }
wdenk3861aa52002-09-27 23:19:37 +0000416
wdenk29e7f5a2004-03-12 00:14:09 +0000417 if (RequestedIP) {
418 int tmp = ntohl (RequestedIP);
wdenk3861aa52002-09-27 23:19:37 +0000419
wdenk29e7f5a2004-03-12 00:14:09 +0000420 *e++ = 50; /* Requested IP */
421 *e++ = 4;
422 *e++ = tmp >> 24;
423 *e++ = tmp >> 16;
424 *e++ = tmp >> 8;
425 *e++ = tmp & 0xff;
426 }
Jon Loeliger5336a762007-07-09 22:08:34 -0500427#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
wdenk29e7f5a2004-03-12 00:14:09 +0000428 if ((hostname = getenv ("hostname"))) {
429 int hostnamelen = strlen (hostname);
430
431 *e++ = 12; /* Hostname */
432 *e++ = hostnamelen;
433 memcpy (e, hostname, hostnamelen);
434 e += hostnamelen;
435 }
stroesee0aadfb2003-08-28 14:17:32 +0000436#endif
437
Jon Loeliger5336a762007-07-09 22:08:34 -0500438#if defined(CONFIG_BOOTP_VENDOREX)
wdenk29e7f5a2004-03-12 00:14:09 +0000439 if ((x = dhcp_vendorex_prep (e)))
440 return x - start;
wdenk3861aa52002-09-27 23:19:37 +0000441#endif
442
wdenk29e7f5a2004-03-12 00:14:09 +0000443 *e++ = 55; /* Parameter Request List */
444 cnt = e++; /* Pointer to count of requested items */
445 *cnt = 0;
Jon Loeliger5336a762007-07-09 22:08:34 -0500446#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk29e7f5a2004-03-12 00:14:09 +0000447 *e++ = 1; /* Subnet Mask */
448 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000449#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500450#if defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkb4ad9622005-04-01 00:25:43 +0000451 *e++ = 2;
452 *cnt += 1;
453#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500454#if defined(CONFIG_BOOTP_GATEWAY)
wdenk29e7f5a2004-03-12 00:14:09 +0000455 *e++ = 3; /* Router Option */
456 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000457#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500458#if defined(CONFIG_BOOTP_DNS)
wdenk29e7f5a2004-03-12 00:14:09 +0000459 *e++ = 6; /* DNS Server(s) */
460 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000461#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500462#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk29e7f5a2004-03-12 00:14:09 +0000463 *e++ = 12; /* Hostname */
464 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000465#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500466#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk29e7f5a2004-03-12 00:14:09 +0000467 *e++ = 13; /* Boot File Size */
468 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000469#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500470#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk29e7f5a2004-03-12 00:14:09 +0000471 *e++ = 17; /* Boot path */
472 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000473#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500474#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk29e7f5a2004-03-12 00:14:09 +0000475 *e++ = 40; /* NIS Domain name request */
476 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000477#endif
Jon Loeliger5336a762007-07-09 22:08:34 -0500478#if defined(CONFIG_BOOTP_NTPSERVER)
wdenkb4ad9622005-04-01 00:25:43 +0000479 *e++ = 42;
480 *cnt += 1;
481#endif
Jason Liu1c7dca52010-11-14 12:23:09 +0800482 /* no options, so back up to avoid sending an empty request list */
483 if (*cnt == 0)
484 e -= 2;
485
wdenk29e7f5a2004-03-12 00:14:09 +0000486 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000487
wdenk29e7f5a2004-03-12 00:14:09 +0000488 /* Pad to minimal length */
wdenk3861aa52002-09-27 23:19:37 +0000489#ifdef CONFIG_DHCP_MIN_EXT_LEN
Simon Glassa0978eb2011-02-02 15:03:28 -0800490 while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN)
wdenk29e7f5a2004-03-12 00:14:09 +0000491 *e++ = 0;
wdenk3861aa52002-09-27 23:19:37 +0000492#endif
493
wdenk29e7f5a2004-03-12 00:14:09 +0000494 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000495}
496
Jon Loeligera9807e52007-07-10 11:05:02 -0500497#else
wdenk3861aa52002-09-27 23:19:37 +0000498/*
Jon Loeliger5336a762007-07-09 22:08:34 -0500499 * Warning: no field size check - change CONFIG_BOOTP_* at your own risk!
wdenk3861aa52002-09-27 23:19:37 +0000500 */
wdenk29e7f5a2004-03-12 00:14:09 +0000501static int BootpExtended (u8 * e)
wdenk3861aa52002-09-27 23:19:37 +0000502{
wdenk29e7f5a2004-03-12 00:14:09 +0000503 u8 *start = e;
wdenk3861aa52002-09-27 23:19:37 +0000504
wdenk29e7f5a2004-03-12 00:14:09 +0000505 *e++ = 99; /* RFC1048 Magic Cookie */
506 *e++ = 130;
507 *e++ = 83;
508 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000509
Jon Loeliger54f35c22007-07-09 17:45:14 -0500510#if defined(CONFIG_CMD_DHCP)
wdenk29e7f5a2004-03-12 00:14:09 +0000511 *e++ = 53; /* DHCP Message Type */
512 *e++ = 1;
513 *e++ = DHCP_DISCOVER;
wdenk3861aa52002-09-27 23:19:37 +0000514
wdenk29e7f5a2004-03-12 00:14:09 +0000515 *e++ = 57; /* Maximum DHCP Message Size */
516 *e++ = 2;
517 *e++ = (576 - 312 + OPT_SIZE) >> 16;
518 *e++ = (576 - 312 + OPT_SIZE) & 0xff;
Jon Loeligera9807e52007-07-10 11:05:02 -0500519#endif
wdenk3861aa52002-09-27 23:19:37 +0000520
Jon Loeliger5336a762007-07-09 22:08:34 -0500521#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk29e7f5a2004-03-12 00:14:09 +0000522 *e++ = 1; /* Subnet mask request */
523 *e++ = 4;
524 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000525#endif
526
Jon Loeliger5336a762007-07-09 22:08:34 -0500527#if defined(CONFIG_BOOTP_GATEWAY)
wdenk29e7f5a2004-03-12 00:14:09 +0000528 *e++ = 3; /* Default gateway request */
529 *e++ = 4;
530 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000531#endif
532
Jon Loeliger5336a762007-07-09 22:08:34 -0500533#if defined(CONFIG_BOOTP_DNS)
wdenk29e7f5a2004-03-12 00:14:09 +0000534 *e++ = 6; /* Domain Name Server */
535 *e++ = 4;
536 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000537#endif
538
Jon Loeliger5336a762007-07-09 22:08:34 -0500539#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk29e7f5a2004-03-12 00:14:09 +0000540 *e++ = 12; /* Host name request */
541 *e++ = 32;
542 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000543#endif
544
Jon Loeliger5336a762007-07-09 22:08:34 -0500545#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk29e7f5a2004-03-12 00:14:09 +0000546 *e++ = 13; /* Boot file size */
547 *e++ = 2;
548 e += 2;
wdenk3861aa52002-09-27 23:19:37 +0000549#endif
550
Jon Loeliger5336a762007-07-09 22:08:34 -0500551#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk29e7f5a2004-03-12 00:14:09 +0000552 *e++ = 17; /* Boot path */
553 *e++ = 32;
554 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000555#endif
556
Jon Loeliger5336a762007-07-09 22:08:34 -0500557#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk29e7f5a2004-03-12 00:14:09 +0000558 *e++ = 40; /* NIS Domain name request */
559 *e++ = 32;
560 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000561#endif
Luuk Paulussen6380e012011-05-16 18:29:19 +0000562#if defined(CONFIG_BOOTP_NTPSERVER)
563 *e++ = 42;
564 *e++ = 4;
565 e += 4;
566#endif
wdenk3861aa52002-09-27 23:19:37 +0000567
wdenk29e7f5a2004-03-12 00:14:09 +0000568 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000569
wdenk29e7f5a2004-03-12 00:14:09 +0000570 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000571}
Jon Loeligera9807e52007-07-10 11:05:02 -0500572#endif
wdenk3861aa52002-09-27 23:19:37 +0000573
574void
575BootpRequest (void)
576{
577 volatile uchar *pkt, *iphdr;
578 Bootp_t *bp;
579 int ext_len, pktlen, iplen;
580
Jon Loeliger54f35c22007-07-09 17:45:14 -0500581#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000582 dhcp_state = INIT;
583#endif
584
585#ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
586 unsigned char bi_enetaddr[6];
587 int reg;
wdenk3861aa52002-09-27 23:19:37 +0000588 ulong tst1, tst2, sum, m_mask, m_value = 0;
589
590 if (BootpTry ==0) {
591 /* get our mac */
Mike Frysinger79ca1b92009-02-11 18:23:48 -0500592 eth_getenv_enetaddr("ethaddr", bi_enetaddr);
wdenk3861aa52002-09-27 23:19:37 +0000593
Robin Getz9e0a4d62009-07-23 03:01:03 -0400594 debug("BootpRequest => Our Mac: ");
595 for (reg=0; reg<6; reg++)
596 debug("%x%c", bi_enetaddr[reg], reg==5 ? '\n' : ':');
wdenk3861aa52002-09-27 23:19:37 +0000597
598 /* Mac-Manipulation 2 get seed1 */
599 tst1=0;
600 tst2=0;
601 for (reg=2; reg<6; reg++) {
602 tst1 = tst1 << 8;
603 tst1 = tst1 | bi_enetaddr[reg];
604 }
605 for (reg=0; reg<2; reg++) {
606 tst2 = tst2 | bi_enetaddr[reg];
607 tst2 = tst2 << 8;
608 }
609
610 seed1 = tst1^tst2;
611
612 /* Mirror seed1*/
613 m_mask=0x1;
614 for (reg=1;reg<=32;reg++) {
615 m_value |= (m_mask & seed1);
616 seed1 = seed1 >> 1;
617 m_value = m_value << 1;
618 }
619 seed1 = m_value;
620 seed2 = 0xB78D0945;
621 }
622
623 /* Random Number Generator */
624
625 for (reg=0;reg<=0;reg++) {
626 sum = seed1 + seed2;
627 if (sum < seed1 || sum < seed2)
628 sum++;
wdenk57b2d802003-06-27 21:31:46 +0000629 seed2 = seed1;
wdenk3861aa52002-09-27 23:19:37 +0000630 seed1 = sum;
631
632 if (BootpTry<=2) { /* Start with max 1024 * 1ms */
633 sum = sum >> (22-BootpTry);
634 } else { /*After 3rd BOOTP request max 8192 * 1ms */
635 sum = sum >> 19;
636 }
637 }
638
639 printf ("Random delay: %ld ms...\n", sum);
640 for (reg=0; reg <sum; reg++) {
641 udelay(1000); /*Wait 1ms*/
642 }
643#endif /* CONFIG_BOOTP_RANDOM_DELAY */
644
645 printf("BOOTP broadcast %d\n", ++BootpTry);
646 pkt = NetTxPacket;
647 memset ((void*)pkt, 0, PKTSIZE);
648
wdenk145d2c12004-04-15 21:48:45 +0000649 pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP);
wdenk3861aa52002-09-27 23:19:37 +0000650
651 /*
652 * Next line results in incorrect packet size being transmitted, resulting
653 * in errors in some DHCP servers, reporting missing bytes. Size must be
654 * set in packet header after extension length has been determined.
655 * C. Hallinan, DS4.COM, Inc.
656 */
657 /* NetSetIP(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, sizeof (Bootp_t)); */
658 iphdr = pkt; /* We need this later for NetSetIP() */
659 pkt += IP_HDR_SIZE;
660
661 bp = (Bootp_t *)pkt;
662 bp->bp_op = OP_BOOTREQUEST;
663 bp->bp_htype = HWT_ETHER;
664 bp->bp_hlen = HWL_ETHER;
665 bp->bp_hops = 0;
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200666 bp->bp_secs = htons(get_timer(0) / 1000);
wdenk3861aa52002-09-27 23:19:37 +0000667 NetWriteIP(&bp->bp_ciaddr, 0);
668 NetWriteIP(&bp->bp_yiaddr, 0);
669 NetWriteIP(&bp->bp_siaddr, 0);
670 NetWriteIP(&bp->bp_giaddr, 0);
671 memcpy (bp->bp_chaddr, NetOurEther, 6);
672 copy_filename (bp->bp_file, BootFile, sizeof(bp->bp_file));
673
674 /* Request additional information from the BOOTP/DHCP server */
Jon Loeliger54f35c22007-07-09 17:45:14 -0500675#if defined(CONFIG_CMD_DHCP)
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200676 ext_len = DhcpExtended((u8 *)bp->bp_vend, DHCP_DISCOVER, 0, 0);
wdenk3861aa52002-09-27 23:19:37 +0000677#else
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200678 ext_len = BootpExtended((u8 *)bp->bp_vend);
Jon Loeligera9807e52007-07-10 11:05:02 -0500679#endif
wdenk3861aa52002-09-27 23:19:37 +0000680
681 /*
682 * Bootp ID is the lower 4 bytes of our ethernet address
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200683 * plus the current time in ms.
wdenk3861aa52002-09-27 23:19:37 +0000684 */
685 BootpID = ((ulong)NetOurEther[2] << 24)
686 | ((ulong)NetOurEther[3] << 16)
687 | ((ulong)NetOurEther[4] << 8)
688 | (ulong)NetOurEther[5];
689 BootpID += get_timer(0);
wdenk29e7f5a2004-03-12 00:14:09 +0000690 BootpID = htonl(BootpID);
wdenk3861aa52002-09-27 23:19:37 +0000691 NetCopyLong(&bp->bp_id, &BootpID);
692
693 /*
694 * Calculate proper packet lengths taking into account the
695 * variable size of the options field
696 */
Norbert van Bolhuis20a020c2009-06-04 09:39:48 +0200697 pktlen = ((int)(pkt-NetTxPacket)) + BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len;
wdenk3861aa52002-09-27 23:19:37 +0000698 iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len;
699 NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200700 NetSetTimeout(SELECT_TIMEOUT, BootpTimeout);
wdenk3861aa52002-09-27 23:19:37 +0000701
Jon Loeliger54f35c22007-07-09 17:45:14 -0500702#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000703 dhcp_state = SELECTING;
704 NetSetHandler(DhcpHandler);
705#else
706 NetSetHandler(BootpHandler);
Jon Loeligera9807e52007-07-10 11:05:02 -0500707#endif
wdenk3861aa52002-09-27 23:19:37 +0000708 NetSendPacket(NetTxPacket, pktlen);
709}
710
Jon Loeliger54f35c22007-07-09 17:45:14 -0500711#if defined(CONFIG_CMD_DHCP)
Wolfgang Denk012429c2006-03-12 18:26:46 +0100712static void DhcpOptionsProcess (uchar * popt, Bootp_t *bp)
wdenk3861aa52002-09-27 23:19:37 +0000713{
wdenkb02744a2003-04-05 00:53:31 +0000714 uchar *end = popt + BOOTP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000715 int oplen, size;
Wolfgang Denk2b184222009-09-11 09:05:32 +0200716#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
717 int *to_ptr;
718#endif
wdenk3861aa52002-09-27 23:19:37 +0000719
wdenk29e7f5a2004-03-12 00:14:09 +0000720 while (popt < end && *popt != 0xff) {
wdenk3861aa52002-09-27 23:19:37 +0000721 oplen = *(popt + 1);
wdenk29e7f5a2004-03-12 00:14:09 +0000722 switch (*popt) {
723 case 1:
724 NetCopyIP (&NetOurSubnetMask, (popt + 2));
725 break;
Jon Loeliger5336a762007-07-09 22:08:34 -0500726#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkb4ad9622005-04-01 00:25:43 +0000727 case 2: /* Time offset */
Wolfgang Denk2b184222009-09-11 09:05:32 +0200728 to_ptr = &NetTimeOffset;
729 NetCopyLong ((ulong *)to_ptr, (ulong *)(popt + 2));
wdenkb4ad9622005-04-01 00:25:43 +0000730 NetTimeOffset = ntohl (NetTimeOffset);
731 break;
732#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000733 case 3:
734 NetCopyIP (&NetOurGatewayIP, (popt + 2));
735 break;
736 case 6:
737 NetCopyIP (&NetOurDNSIP, (popt + 2));
Jon Loeliger5336a762007-07-09 22:08:34 -0500738#if defined(CONFIG_BOOTP_DNS2)
wdenk29e7f5a2004-03-12 00:14:09 +0000739 if (*(popt + 1) > 4) {
740 NetCopyIP (&NetOurDNS2IP, (popt + 2 + 4));
741 }
stroesee0aadfb2003-08-28 14:17:32 +0000742#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000743 break;
744 case 12:
745 size = truncate_sz ("Host Name", sizeof (NetOurHostName), oplen);
746 memcpy (&NetOurHostName, popt + 2, size);
747 NetOurHostName[size] = 0;
748 break;
749 case 15: /* Ignore Domain Name Option */
750 break;
751 case 17:
752 size = truncate_sz ("Root Path", sizeof (NetOurRootPath), oplen);
753 memcpy (&NetOurRootPath, popt + 2, size);
754 NetOurRootPath[size] = 0;
755 break;
Jon Loeliger5336a762007-07-09 22:08:34 -0500756#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
wdenkb4ad9622005-04-01 00:25:43 +0000757 case 42: /* NTP server IP */
758 NetCopyIP (&NetNtpServerIP, (popt + 2));
759 break;
760#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000761 case 51:
762 NetCopyLong (&dhcp_leasetime, (ulong *) (popt + 2));
763 break;
764 case 53: /* Ignore Message Type Option */
765 break;
766 case 54:
767 NetCopyIP (&NetDHCPServerIP, (popt + 2));
768 break;
769 case 58: /* Ignore Renewal Time Option */
770 break;
771 case 59: /* Ignore Rebinding Time Option */
772 break;
Wolfgang Denk012429c2006-03-12 18:26:46 +0100773 case 66: /* Ignore TFTP server name */
774 break;
775 case 67: /* vendor opt bootfile */
776 /*
777 * I can't use dhcp_vendorex_proc here because I need
778 * to write into the bootp packet - even then I had to
779 * pass the bootp packet pointer into here as the
780 * second arg
781 */
782 size = truncate_sz ("Opt Boot File",
783 sizeof(bp->bp_file),
784 oplen);
785 if (bp->bp_file[0] == '\0' && size > 0) {
786 /*
787 * only use vendor boot file if we didn't
788 * receive a boot file in the main non-vendor
789 * part of the packet - god only knows why
790 * some vendors chose not to use this perfectly
791 * good spot to store the boot file (join on
792 * Tru64 Unix) it seems mind bogglingly crazy
793 * to me
794 */
795 printf("*** WARNING: using vendor "
796 "optional boot file\n");
797 memcpy(bp->bp_file, popt + 2, size);
798 bp->bp_file[size] = '\0';
799 }
800 break;
wdenk29e7f5a2004-03-12 00:14:09 +0000801 default:
Jon Loeliger5336a762007-07-09 22:08:34 -0500802#if defined(CONFIG_BOOTP_VENDOREX)
wdenk29e7f5a2004-03-12 00:14:09 +0000803 if (dhcp_vendorex_proc (popt))
wdenk57b2d802003-06-27 21:31:46 +0000804 break;
wdenk3861aa52002-09-27 23:19:37 +0000805#endif
wdenk29e7f5a2004-03-12 00:14:09 +0000806 printf ("*** Unhandled DHCP Option in OFFER/ACK: %d\n", *popt);
807 break;
wdenk3861aa52002-09-27 23:19:37 +0000808 }
809 popt += oplen + 2; /* Process next option */
810 }
811}
812
813static int DhcpMessageType(unsigned char *popt)
814{
815 if (NetReadLong((ulong*)popt) != htonl(BOOTP_VENDOR_MAGIC))
816 return -1;
817
818 popt += 4;
819 while ( *popt != 0xff ) {
820 if ( *popt == 53 ) /* DHCP Message Type */
821 return *(popt + 2);
822 popt += *(popt + 1) + 2; /* Scan through all options */
823 }
824 return -1;
825}
826
wdenkb02744a2003-04-05 00:53:31 +0000827static void DhcpSendRequestPkt(Bootp_t *bp_offer)
wdenk3861aa52002-09-27 23:19:37 +0000828{
829 volatile uchar *pkt, *iphdr;
830 Bootp_t *bp;
831 int pktlen, iplen, extlen;
wdenkcc1e2562003-03-06 13:39:27 +0000832 IPaddr_t OfferedIP;
wdenk3861aa52002-09-27 23:19:37 +0000833
Robin Getz9e0a4d62009-07-23 03:01:03 -0400834 debug("DhcpSendRequestPkt: Sending DHCPREQUEST\n");
wdenk3861aa52002-09-27 23:19:37 +0000835 pkt = NetTxPacket;
836 memset ((void*)pkt, 0, PKTSIZE);
837
wdenk145d2c12004-04-15 21:48:45 +0000838 pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP);
wdenk3861aa52002-09-27 23:19:37 +0000839
840 iphdr = pkt; /* We'll need this later to set proper pkt size */
841 pkt += IP_HDR_SIZE;
842
843 bp = (Bootp_t *)pkt;
844 bp->bp_op = OP_BOOTREQUEST;
845 bp->bp_htype = HWT_ETHER;
846 bp->bp_hlen = HWL_ETHER;
847 bp->bp_hops = 0;
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200848 bp->bp_secs = htons(get_timer(0) / 1000);
Justin Flammia01f256b2007-10-29 17:40:35 -0400849 /* Do not set the client IP, your IP, or server IP yet, since it hasn't been ACK'ed by
850 * the server yet */
851
Wolfgang Denk8a933fb2006-10-12 00:01:08 +0200852 /*
Wolfgang Denk68e83a82006-10-09 01:26:14 +0200853 * RFC3046 requires Relay Agents to discard packets with
854 * nonzero and offered giaddr
855 */
856 NetWriteIP(&bp->bp_giaddr, 0);
857
wdenk3861aa52002-09-27 23:19:37 +0000858 memcpy (bp->bp_chaddr, NetOurEther, 6);
859
860 /*
861 * ID is the id of the OFFER packet
862 */
863
864 NetCopyLong(&bp->bp_id, &bp_offer->bp_id);
865
866 /*
867 * Copy options from OFFER packet if present
868 */
Justin Flammia01f256b2007-10-29 17:40:35 -0400869
870 /* Copy offered IP into the parameters request list */
871 NetCopyIP(&OfferedIP, &bp_offer->bp_yiaddr);
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200872 extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP);
wdenk3861aa52002-09-27 23:19:37 +0000873
Norbert van Bolhuis20a020c2009-06-04 09:39:48 +0200874 pktlen = ((int)(pkt-NetTxPacket)) + BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
wdenk3861aa52002-09-27 23:19:37 +0000875 iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
876 NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
877
Robin Getz9e0a4d62009-07-23 03:01:03 -0400878 debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen);
Aras Vaichas72aa3f32008-03-26 09:43:57 +1100879#ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY
880 udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY);
881#endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */
wdenk3861aa52002-09-27 23:19:37 +0000882 NetSendPacket(NetTxPacket, pktlen);
883}
884
885/*
886 * Handle DHCP received packets.
887 */
888static void
Luca Ceresoli428ab362011-04-18 06:19:50 +0000889DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
890 unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000891{
892 Bootp_t *bp = (Bootp_t *)pkt;
893
Robin Getz9e0a4d62009-07-23 03:01:03 -0400894 debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
wdenk3861aa52002-09-27 23:19:37 +0000895 src, dest, len, dhcp_state);
896
wdenk29e7f5a2004-03-12 00:14:09 +0000897 if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */
wdenk3861aa52002-09-27 23:19:37 +0000898 return;
899
Robin Getz9e0a4d62009-07-23 03:01:03 -0400900 debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: %d\n",
wdenk3861aa52002-09-27 23:19:37 +0000901 src, dest, len, dhcp_state);
902
903 switch (dhcp_state) {
904 case SELECTING:
905 /*
906 * Wait an appropriate time for any potential DHCPOFFER packets
907 * to arrive. Then select one, and generate DHCPREQUEST response.
908 * If filename is in format we recognize, assume it is a valid
909 * OFFER from a server we want.
910 */
Robin Getz9e0a4d62009-07-23 03:01:03 -0400911 debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200912#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +0000913 if (strncmp(bp->bp_file,
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200914 CONFIG_SYS_BOOTFILE_PREFIX,
915 strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0 ) {
916#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +0000917
Robin Getz9e0a4d62009-07-23 03:01:03 -0400918 debug("TRANSITIONING TO REQUESTING STATE\n");
wdenk3861aa52002-09-27 23:19:37 +0000919 dhcp_state = REQUESTING;
stroese5fa6e902003-04-10 13:26:44 +0000920
wdenk3861aa52002-09-27 23:19:37 +0000921 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk012429c2006-03-12 18:26:46 +0100922 DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp);
wdenk3861aa52002-09-27 23:19:37 +0000923
Bartlomiej Sieka56668462008-10-01 15:26:28 +0200924 NetSetTimeout(TIMEOUT, BootpTimeout);
wdenk3861aa52002-09-27 23:19:37 +0000925 DhcpSendRequestPkt(bp);
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200926#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +0000927 }
Jean-Christophe PLAGNIOL-VILLARD03836942008-10-16 15:01:15 +0200928#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +0000929
930 return;
931 break;
932 case REQUESTING:
Robin Getz9e0a4d62009-07-23 03:01:03 -0400933 debug("DHCP State: REQUESTING\n");
wdenk3861aa52002-09-27 23:19:37 +0000934
Wolfgang Denk7fb52662005-10-13 16:45:02 +0200935 if ( DhcpMessageType((u8 *)bp->bp_vend) == DHCP_ACK ) {
wdenk3861aa52002-09-27 23:19:37 +0000936 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk012429c2006-03-12 18:26:46 +0100937 DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp);
wdenk29e7f5a2004-03-12 00:14:09 +0000938 BootpCopyNetParams(bp); /* Store net params from reply */
wdenk3861aa52002-09-27 23:19:37 +0000939 dhcp_state = BOUND;
Mike Frysingerd5695f42009-02-17 00:00:53 -0500940 printf ("DHCP client bound to address %pI4\n", &NetOurIP);
wdenk3861aa52002-09-27 23:19:37 +0000941
Simon Glassab068eb2011-06-13 16:13:12 -0700942 auto_load();
wdenk3861aa52002-09-27 23:19:37 +0000943 return;
944 }
945 break;
Remy Bohmer03a44492008-08-20 11:30:28 +0200946 case BOUND:
947 /* DHCP client bound to address */
948 break;
wdenk3861aa52002-09-27 23:19:37 +0000949 default:
wdenk42c05472004-03-23 22:14:11 +0000950 puts ("DHCP: INVALID STATE\n");
wdenk3861aa52002-09-27 23:19:37 +0000951 break;
952 }
953
954}
955
956void DhcpRequest(void)
957{
958 BootpRequest();
959}
Wolfgang Denkf7a7f082007-11-03 23:09:27 +0100960#endif /* CONFIG_CMD_DHCP */