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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
wdenk232c1502004-03-12 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"
wdenk232c1502004-03-12 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
Kim Phillipsdb7720b2012-07-05 13:19:32 +000020#ifdef CONFIG_BOOTP_RANDOM_DELAY
21#include "net_rand.h"
22#endif
wdenk3861aa52002-09-27 23:19:37 +000023
Joe Hershberger3090b7e2012-05-15 08:59:06 +000024#define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */
wdenk3861aa52002-09-27 23:19:37 +000025
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +020026#define TIMEOUT 5000UL /* Milliseconds before trying BOOTP again */
wdenk232c1502004-03-12 00:14:09 +000027#ifndef CONFIG_NET_RETRY_COUNT
Joe Hershberger3090b7e2012-05-15 08:59:06 +000028# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
wdenk3861aa52002-09-27 23:19:37 +000029#else
wdenk232c1502004-03-12 00:14:09 +000030# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
wdenk3861aa52002-09-27 23:19:37 +000031#endif
32
Joe Hershberger3090b7e2012-05-15 08:59:06 +000033#define PORT_BOOTPS 67 /* BOOTP server UDP port */
34#define PORT_BOOTPC 68 /* BOOTP client UDP port */
wdenk3861aa52002-09-27 23:19:37 +000035
Joe Hershberger3090b7e2012-05-15 08:59:06 +000036#ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */
wdenk232c1502004-03-12 00:14:09 +000037#define CONFIG_DHCP_MIN_EXT_LEN 64
wdenk3861aa52002-09-27 23:19:37 +000038#endif
39
40ulong BootpID;
41int BootpTry;
wdenk3861aa52002-09-27 23:19:37 +000042
Jon Loeliger643d1ab2007-07-09 17:45:14 -050043#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +000044dhcp_state_t dhcp_state = INIT;
Joe Hershberger3090b7e2012-05-15 08:59:06 +000045unsigned long dhcp_leasetime;
46IPaddr_t NetDHCPServerIP;
Luca Ceresoli03eb1292011-04-18 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 */
wdenk3e386912003-04-05 00:53:31 +000051#if 0
52static char *dhcpmsg2str(int type)
wdenk3861aa52002-09-27 23:19:37 +000053{
54 switch (type) {
wdenk232c1502004-03-12 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}
wdenk3e386912003-04-05 00:53:31 +000065#endif
John Rigby3f0ff412012-08-09 14:17:11 -060066
67#if defined(CONFIG_BOOTP_VENDOREX)
68extern 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 */
70u8 *__dhcp_vendorex_prep(u8 *e)
71{
72 char *ptr;
73
74 /* DHCP vendor-class-identifier = 60 */
75 if ((ptr = getenv("dhcp_vendor-class-identifier"))) {
76 *e++ = 60;
77 *e++ = strlen(ptr);
78 while (*ptr)
79 *e++ = *ptr++;
80 }
81 /* DHCP_CLIENT_IDENTIFIER = 61 */
82 if ((ptr = getenv("dhcp_client_id"))) {
83 *e++ = 61;
84 *e++ = strlen(ptr);
85 while (*ptr)
86 *e++ = *ptr++;
87 }
88
89 return e;
90}
91
92u8 *__dhcp_vendorex_proc(u8 *popt)
93{
94 return NULL;
95}
96u8 *dhcp_vendorex_prep(u8 *e) __attribute__((weak, alias("__dhcp_vendorex_prep")));
97u8 *dhcp_vendorex_proc(u8 *e) __attribute__((weak, alias("__dhcp_vendorex_proc")));
98#endif
Jon Loeliger610f2e92007-07-10 11:05:02 -050099#endif
wdenk3861aa52002-09-27 23:19:37 +0000100
101static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len)
102{
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000103 struct Bootp_t *bp = (struct Bootp_t *) pkt;
wdenk3861aa52002-09-27 23:19:37 +0000104 int retval = 0;
105
106 if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
107 retval = -1;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000108 else if (len < sizeof(struct Bootp_t) - OPT_FIELD_SIZE)
wdenk3861aa52002-09-27 23:19:37 +0000109 retval = -2;
110 else if (bp->bp_op != OP_BOOTREQUEST &&
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000111 bp->bp_op != OP_BOOTREPLY &&
112 bp->bp_op != DHCP_OFFER &&
113 bp->bp_op != DHCP_ACK &&
114 bp->bp_op != DHCP_NAK)
wdenk3861aa52002-09-27 23:19:37 +0000115 retval = -3;
wdenk3861aa52002-09-27 23:19:37 +0000116 else if (bp->bp_htype != HWT_ETHER)
117 retval = -4;
118 else if (bp->bp_hlen != HWL_ETHER)
119 retval = -5;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000120 else if (NetReadLong((ulong *)&bp->bp_id) != BootpID)
wdenk3861aa52002-09-27 23:19:37 +0000121 retval = -6;
wdenk3861aa52002-09-27 23:19:37 +0000122
Robin Getz0ebf04c2009-07-23 03:01:03 -0400123 debug("Filtering pkt = %d\n", retval);
wdenk3861aa52002-09-27 23:19:37 +0000124
125 return retval;
126}
127
128/*
129 * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
130 */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000131static void BootpCopyNetParams(struct Bootp_t *bp)
wdenk3861aa52002-09-27 23:19:37 +0000132{
Wilson Callan5d110f02007-07-28 10:56:13 -0400133#if !defined(CONFIG_BOOTP_SERVERIP)
Joe Hershberger1752f0f2012-05-23 07:59:18 +0000134 IPaddr_t tmp_ip;
135
wdenk3d3befa2004-03-14 15:06:13 +0000136 NetCopyIP(&tmp_ip, &bp->bp_siaddr);
137 if (tmp_ip != 0)
138 NetCopyIP(&NetServerIP, &bp->bp_siaddr);
Joe Hershbergercb487f52012-05-23 07:58:06 +0000139 memcpy(NetServerEther, ((struct ethernet_hdr *)NetRxPacket)->et_src, 6);
Wilson Callan5d110f02007-07-28 10:56:13 -0400140#endif
Joe Hershberger1752f0f2012-05-23 07:59:18 +0000141 NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
wdenk3d3befa2004-03-14 15:06:13 +0000142 if (strlen(bp->bp_file) > 0)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000143 copy_filename(BootFile, bp->bp_file, sizeof(BootFile));
wdenk3861aa52002-09-27 23:19:37 +0000144
Robin Getz0ebf04c2009-07-23 03:01:03 -0400145 debug("Bootfile: %s\n", BootFile);
wdenk3861aa52002-09-27 23:19:37 +0000146
147 /* Propagate to environment:
wdenk8bde7f72003-06-27 21:31:46 +0000148 * don't delete exising entry when BOOTP / DHCP reply does
wdenk3861aa52002-09-27 23:19:37 +0000149 * not contain a new value
150 */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000151 if (*BootFile)
152 setenv("bootfile", BootFile);
wdenk3861aa52002-09-27 23:19:37 +0000153}
154
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000155static int truncate_sz(const char *name, int maxlen, int curlen)
wdenk3861aa52002-09-27 23:19:37 +0000156{
157 if (curlen >= maxlen) {
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000158 printf("*** WARNING: %s is too long (%d - max: %d)"
159 " - truncated\n", name, curlen, maxlen);
wdenk3861aa52002-09-27 23:19:37 +0000160 curlen = maxlen - 1;
161 }
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000162 return curlen;
wdenk3861aa52002-09-27 23:19:37 +0000163}
164
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500165#if !defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000166
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000167static void BootpVendorFieldProcess(u8 *ext)
wdenk3861aa52002-09-27 23:19:37 +0000168{
wdenk232c1502004-03-12 00:14:09 +0000169 int size = *(ext + 1);
wdenk3861aa52002-09-27 23:19:37 +0000170
Robin Getz0ebf04c2009-07-23 03:01:03 -0400171 debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext,
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000172 *(ext + 1));
wdenk3861aa52002-09-27 23:19:37 +0000173
wdenk232c1502004-03-12 00:14:09 +0000174 NetBootFileSize = 0;
wdenk3861aa52002-09-27 23:19:37 +0000175
wdenk232c1502004-03-12 00:14:09 +0000176 switch (*ext) {
177 /* Fixed length fields */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000178 case 1: /* Subnet mask */
wdenk3861aa52002-09-27 23:19:37 +0000179 if (NetOurSubnetMask == 0)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000180 NetCopyIP(&NetOurSubnetMask, (IPaddr_t *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000181 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000182 case 2: /* Time offset - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000183 break;
wdenk232c1502004-03-12 00:14:09 +0000184 /* Variable length fields */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000185 case 3: /* Gateways list */
186 if (NetOurGatewayIP == 0)
187 NetCopyIP(&NetOurGatewayIP, (IPaddr_t *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000188 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000189 case 4: /* Time server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000190 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000191 case 5: /* IEN-116 name server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000192 break;
193 case 6:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000194 if (NetOurDNSIP == 0)
195 NetCopyIP(&NetOurDNSIP, (IPaddr_t *) (ext + 2));
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500196#if defined(CONFIG_BOOTP_DNS2)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000197 if ((NetOurDNS2IP == 0) && (size > 4))
198 NetCopyIP(&NetOurDNS2IP, (IPaddr_t *) (ext + 2 + 4));
stroesefe389a82003-08-28 14:17:32 +0000199#endif
wdenk3861aa52002-09-27 23:19:37 +0000200 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000201 case 7: /* Log server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000202 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000203 case 8: /* Cookie/Quote server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000204 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000205 case 9: /* LPR server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000206 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000207 case 10: /* Impress server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000208 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000209 case 11: /* RPL server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000210 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000211 case 12: /* Host name */
wdenk3861aa52002-09-27 23:19:37 +0000212 if (NetOurHostName[0] == 0) {
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000213 size = truncate_sz("Host Name",
214 sizeof(NetOurHostName), size);
215 memcpy(&NetOurHostName, ext + 2, size);
wdenk232c1502004-03-12 00:14:09 +0000216 NetOurHostName[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000217 }
218 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000219 case 13: /* Boot file size */
wdenk3861aa52002-09-27 23:19:37 +0000220 if (size == 2)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000221 NetBootFileSize = ntohs(*(ushort *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000222 else if (size == 4)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000223 NetBootFileSize = ntohl(*(ulong *) (ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000224 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000225 case 14: /* Merit dump file - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000226 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000227 case 15: /* Domain name - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000228 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000229 case 16: /* Swap server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000230 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000231 case 17: /* Root path */
wdenk3861aa52002-09-27 23:19:37 +0000232 if (NetOurRootPath[0] == 0) {
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000233 size = truncate_sz("Root Path",
234 sizeof(NetOurRootPath), size);
235 memcpy(&NetOurRootPath, ext + 2, size);
wdenk232c1502004-03-12 00:14:09 +0000236 NetOurRootPath[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000237 }
238 break;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000239 case 18: /* Extension path - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000240 /*
wdenk8bde7f72003-06-27 21:31:46 +0000241 * This can be used to send the information of the
242 * vendor area in another file that the client can
243 * access via TFTP.
wdenk3861aa52002-09-27 23:19:37 +0000244 */
245 break;
wdenk232c1502004-03-12 00:14:09 +0000246 /* IP host layer fields */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000247 case 40: /* NIS Domain name */
wdenk3861aa52002-09-27 23:19:37 +0000248 if (NetOurNISDomain[0] == 0) {
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000249 size = truncate_sz("NIS Domain Name",
250 sizeof(NetOurNISDomain), size);
251 memcpy(&NetOurNISDomain, ext + 2, size);
wdenk232c1502004-03-12 00:14:09 +0000252 NetOurNISDomain[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000253 }
254 break;
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000255#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
256 case 42: /* NTP server IP */
257 NetCopyIP(&NetNtpServerIP, (IPaddr_t *) (ext + 2));
258 break;
259#endif
wdenk232c1502004-03-12 00:14:09 +0000260 /* Application layer fields */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000261 case 43: /* Vendor specific info - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000262 /*
wdenk8bde7f72003-06-27 21:31:46 +0000263 * Binary information to exchange specific
264 * product information.
wdenk3861aa52002-09-27 23:19:37 +0000265 */
266 break;
wdenk232c1502004-03-12 00:14:09 +0000267 /* Reserved (custom) fields (128..254) */
268 }
wdenk3861aa52002-09-27 23:19:37 +0000269}
270
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000271static void BootpVendorProcess(u8 *ext, int size)
wdenk3861aa52002-09-27 23:19:37 +0000272{
wdenk232c1502004-03-12 00:14:09 +0000273 u8 *end = ext + size;
wdenk3861aa52002-09-27 23:19:37 +0000274
Robin Getz0ebf04c2009-07-23 03:01:03 -0400275 debug("[BOOTP] Checking extension (%d bytes)...\n", size);
wdenk3861aa52002-09-27 23:19:37 +0000276
wdenk232c1502004-03-12 00:14:09 +0000277 while ((ext < end) && (*ext != 0xff)) {
278 if (*ext == 0) {
279 ext++;
280 } else {
281 u8 *opt = ext;
282
283 ext += ext[1] + 2;
284 if (ext <= end)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000285 BootpVendorFieldProcess(opt);
wdenk232c1502004-03-12 00:14:09 +0000286 }
wdenk3861aa52002-09-27 23:19:37 +0000287 }
wdenk3861aa52002-09-27 23:19:37 +0000288
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000289 debug("[BOOTP] Received fields:\n");
Mike Frysingerb6446b62009-02-17 00:00:53 -0500290 if (NetOurSubnetMask)
Robin Getz0ebf04c2009-07-23 03:01:03 -0400291 debug("NetOurSubnetMask : %pI4\n", &NetOurSubnetMask);
wdenk3861aa52002-09-27 23:19:37 +0000292
Mike Frysingerb6446b62009-02-17 00:00:53 -0500293 if (NetOurGatewayIP)
Robin Getz0ebf04c2009-07-23 03:01:03 -0400294 debug("NetOurGatewayIP : %pI4", &NetOurGatewayIP);
wdenk3861aa52002-09-27 23:19:37 +0000295
Robin Getz0ebf04c2009-07-23 03:01:03 -0400296 if (NetBootFileSize)
297 debug("NetBootFileSize : %d\n", NetBootFileSize);
wdenk3861aa52002-09-27 23:19:37 +0000298
Robin Getz0ebf04c2009-07-23 03:01:03 -0400299 if (NetOurHostName[0])
300 debug("NetOurHostName : %s\n", NetOurHostName);
wdenk3861aa52002-09-27 23:19:37 +0000301
Robin Getz0ebf04c2009-07-23 03:01:03 -0400302 if (NetOurRootPath[0])
303 debug("NetOurRootPath : %s\n", NetOurRootPath);
wdenk3861aa52002-09-27 23:19:37 +0000304
Robin Getz0ebf04c2009-07-23 03:01:03 -0400305 if (NetOurNISDomain[0])
306 debug("NetOurNISDomain : %s\n", NetOurNISDomain);
wdenk3861aa52002-09-27 23:19:37 +0000307
Robin Getz0ebf04c2009-07-23 03:01:03 -0400308 if (NetBootFileSize)
309 debug("NetBootFileSize: %d\n", NetBootFileSize);
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000310
311#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
312 if (NetNtpServerIP)
313 debug("NetNtpServerIP : %pI4\n", &NetNtpServerIP);
314#endif
wdenk3861aa52002-09-27 23:19:37 +0000315}
Simon Glass09349862011-06-13 16:13:12 -0700316
wdenk3861aa52002-09-27 23:19:37 +0000317/*
318 * Handle a BOOTP received packet.
319 */
320static void
Luca Ceresoli03eb1292011-04-18 06:19:50 +0000321BootpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
322 unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000323{
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000324 struct Bootp_t *bp;
wdenk3861aa52002-09-27 23:19:37 +0000325
Robin Getz0ebf04c2009-07-23 03:01:03 -0400326 debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n",
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000327 src, dest, len, sizeof(struct Bootp_t));
wdenk3861aa52002-09-27 23:19:37 +0000328
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000329 bp = (struct Bootp_t *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000330
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000331 /* Filter out pkts we don't want */
332 if (BootpCheckPkt(pkt, dest, src, len))
wdenk3861aa52002-09-27 23:19:37 +0000333 return;
334
335 /*
wdenk232c1502004-03-12 00:14:09 +0000336 * Got a good BOOTP reply. Copy the data into our variables.
wdenk3861aa52002-09-27 23:19:37 +0000337 */
338#ifdef CONFIG_STATUS_LED
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000339 status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
wdenk3861aa52002-09-27 23:19:37 +0000340#endif
341
342 BootpCopyNetParams(bp); /* Store net parameters from reply */
343
344 /* Retrieve extended information (we must parse the vendor area) */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000345 if (NetReadLong((ulong *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200346 BootpVendorProcess((uchar *)&bp->bp_vend[4], len);
wdenk3861aa52002-09-27 23:19:37 +0000347
348 NetSetTimeout(0, (thand_f *)0);
Simon Glass573f14f2011-12-10 11:08:06 +0000349 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop");
wdenk3861aa52002-09-27 23:19:37 +0000350
Robin Getz0ebf04c2009-07-23 03:01:03 -0400351 debug("Got good BOOTP\n");
wdenk3861aa52002-09-27 23:19:37 +0000352
Simon Glasse4a3d572011-10-27 06:24:32 +0000353 net_auto_load();
wdenk3861aa52002-09-27 23:19:37 +0000354}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500355#endif
wdenk3861aa52002-09-27 23:19:37 +0000356
357/*
358 * Timeout on BOOTP/DHCP request.
359 */
360static void
361BootpTimeout(void)
362{
363 if (BootpTry >= TIMEOUT_COUNT) {
Joe Hershberger2c00e092012-05-23 07:59:19 +0000364#ifdef CONFIG_BOOTP_MAY_FAIL
365 puts("\nRetry count exceeded\n");
benoit.thebaudeau@advansb977aa82012-07-19 01:23:21 +0000366 net_set_state(NETLOOP_FAIL);
Joe Hershberger2c00e092012-05-23 07:59:19 +0000367#else
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000368 puts("\nRetry count exceeded; starting again\n");
369 NetStartAgain();
Joe Hershberger2c00e092012-05-23 07:59:19 +0000370#endif
wdenk3861aa52002-09-27 23:19:37 +0000371 } else {
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000372 NetSetTimeout(TIMEOUT, BootpTimeout);
373 BootpRequest();
wdenk3861aa52002-09-27 23:19:37 +0000374 }
375}
376
377/*
378 * Initialize BOOTP extension fields in the request.
379 */
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500380#if defined(CONFIG_CMD_DHCP)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000381static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID,
382 IPaddr_t RequestedIP)
wdenk3861aa52002-09-27 23:19:37 +0000383{
wdenk232c1502004-03-12 00:14:09 +0000384 u8 *start = e;
385 u8 *cnt;
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000386#if defined(CONFIG_BOOTP_PXE)
387 char *uuid;
388 size_t vci_strlen;
389 u16 clientarch;
390#endif
wdenk232c1502004-03-12 00:14:09 +0000391
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500392#if defined(CONFIG_BOOTP_VENDOREX)
wdenk232c1502004-03-12 00:14:09 +0000393 u8 *x;
wdenk3861aa52002-09-27 23:19:37 +0000394#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500395#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200396 char *hostname;
stroesefe389a82003-08-28 14:17:32 +0000397#endif
wdenk3861aa52002-09-27 23:19:37 +0000398
wdenk232c1502004-03-12 00:14:09 +0000399 *e++ = 99; /* RFC1048 Magic Cookie */
400 *e++ = 130;
401 *e++ = 83;
402 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000403
wdenk232c1502004-03-12 00:14:09 +0000404 *e++ = 53; /* DHCP Message Type */
405 *e++ = 1;
406 *e++ = message_type;
wdenk3861aa52002-09-27 23:19:37 +0000407
wdenk232c1502004-03-12 00:14:09 +0000408 *e++ = 57; /* Maximum DHCP Message Size */
409 *e++ = 2;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000410 *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8;
411 *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
wdenk3861aa52002-09-27 23:19:37 +0000412
wdenk232c1502004-03-12 00:14:09 +0000413 if (ServerID) {
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000414 int tmp = ntohl(ServerID);
wdenk3861aa52002-09-27 23:19:37 +0000415
wdenk232c1502004-03-12 00:14:09 +0000416 *e++ = 54; /* ServerID */
417 *e++ = 4;
418 *e++ = tmp >> 24;
419 *e++ = tmp >> 16;
420 *e++ = tmp >> 8;
421 *e++ = tmp & 0xff;
422 }
wdenk3861aa52002-09-27 23:19:37 +0000423
wdenk232c1502004-03-12 00:14:09 +0000424 if (RequestedIP) {
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000425 int tmp = ntohl(RequestedIP);
wdenk3861aa52002-09-27 23:19:37 +0000426
wdenk232c1502004-03-12 00:14:09 +0000427 *e++ = 50; /* Requested IP */
428 *e++ = 4;
429 *e++ = tmp >> 24;
430 *e++ = tmp >> 16;
431 *e++ = tmp >> 8;
432 *e++ = tmp & 0xff;
433 }
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500434#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000435 hostname = getenv("hostname");
436 if (hostname) {
437 int hostnamelen = strlen(hostname);
wdenk232c1502004-03-12 00:14:09 +0000438
439 *e++ = 12; /* Hostname */
440 *e++ = hostnamelen;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000441 memcpy(e, hostname, hostnamelen);
wdenk232c1502004-03-12 00:14:09 +0000442 e += hostnamelen;
443 }
stroesefe389a82003-08-28 14:17:32 +0000444#endif
445
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000446#if defined(CONFIG_BOOTP_PXE)
447 clientarch = CONFIG_BOOTP_PXE_CLIENTARCH;
448 *e++ = 93; /* Client System Architecture */
449 *e++ = 2;
450 *e++ = (clientarch >> 8) & 0xff;
451 *e++ = clientarch & 0xff;
452
453 *e++ = 94; /* Client Network Interface Identifier */
454 *e++ = 3;
455 *e++ = 1; /* type field for UNDI */
456 *e++ = 0; /* major revision */
457 *e++ = 0; /* minor revision */
458
459 uuid = getenv("pxeuuid");
460
461 if (uuid) {
462 if (uuid_str_valid(uuid)) {
463 *e++ = 97; /* Client Machine Identifier */
464 *e++ = 17;
465 *e++ = 0; /* type 0 - UUID */
466
467 uuid_str_to_bin(uuid, e);
468 e += 16;
469 } else {
470 printf("Invalid pxeuuid: %s\n", uuid);
471 }
472 }
473
474 *e++ = 60; /* Vendor Class Identifier */
475 vci_strlen = strlen(CONFIG_BOOTP_VCI_STRING);
476 *e++ = vci_strlen;
477 memcpy(e, CONFIG_BOOTP_VCI_STRING, vci_strlen);
478 e += vci_strlen;
479#endif
480
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500481#if defined(CONFIG_BOOTP_VENDOREX)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000482 x = dhcp_vendorex_prep(e);
483 if (x)
wdenk232c1502004-03-12 00:14:09 +0000484 return x - start;
wdenk3861aa52002-09-27 23:19:37 +0000485#endif
486
wdenk232c1502004-03-12 00:14:09 +0000487 *e++ = 55; /* Parameter Request List */
488 cnt = e++; /* Pointer to count of requested items */
489 *cnt = 0;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500490#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk232c1502004-03-12 00:14:09 +0000491 *e++ = 1; /* Subnet Mask */
492 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000493#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500494#if defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkea287de2005-04-01 00:25:43 +0000495 *e++ = 2;
496 *cnt += 1;
497#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500498#if defined(CONFIG_BOOTP_GATEWAY)
wdenk232c1502004-03-12 00:14:09 +0000499 *e++ = 3; /* Router Option */
500 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000501#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500502#if defined(CONFIG_BOOTP_DNS)
wdenk232c1502004-03-12 00:14:09 +0000503 *e++ = 6; /* DNS Server(s) */
504 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000505#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500506#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk232c1502004-03-12 00:14:09 +0000507 *e++ = 12; /* Hostname */
508 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000509#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500510#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk232c1502004-03-12 00:14:09 +0000511 *e++ = 13; /* Boot File Size */
512 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000513#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500514#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk232c1502004-03-12 00:14:09 +0000515 *e++ = 17; /* Boot path */
516 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000517#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500518#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk232c1502004-03-12 00:14:09 +0000519 *e++ = 40; /* NIS Domain name request */
520 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000521#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500522#if defined(CONFIG_BOOTP_NTPSERVER)
wdenkea287de2005-04-01 00:25:43 +0000523 *e++ = 42;
524 *cnt += 1;
525#endif
Jason Liu258ccd62010-11-14 12:23:09 +0800526 /* no options, so back up to avoid sending an empty request list */
527 if (*cnt == 0)
528 e -= 2;
529
wdenk232c1502004-03-12 00:14:09 +0000530 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000531
wdenk232c1502004-03-12 00:14:09 +0000532 /* Pad to minimal length */
wdenk3861aa52002-09-27 23:19:37 +0000533#ifdef CONFIG_DHCP_MIN_EXT_LEN
Simon Glass21076f62011-02-02 15:03:28 -0800534 while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN)
wdenk232c1502004-03-12 00:14:09 +0000535 *e++ = 0;
wdenk3861aa52002-09-27 23:19:37 +0000536#endif
537
wdenk232c1502004-03-12 00:14:09 +0000538 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000539}
540
Jon Loeliger610f2e92007-07-10 11:05:02 -0500541#else
wdenk3861aa52002-09-27 23:19:37 +0000542/*
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000543 * Warning: no field size check - change CONFIG_BOOTP_* at your own risk!
wdenk3861aa52002-09-27 23:19:37 +0000544 */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000545static int BootpExtended(u8 *e)
wdenk3861aa52002-09-27 23:19:37 +0000546{
wdenk232c1502004-03-12 00:14:09 +0000547 u8 *start = e;
wdenk3861aa52002-09-27 23:19:37 +0000548
wdenk232c1502004-03-12 00:14:09 +0000549 *e++ = 99; /* RFC1048 Magic Cookie */
550 *e++ = 130;
551 *e++ = 83;
552 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000553
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500554#if defined(CONFIG_CMD_DHCP)
wdenk232c1502004-03-12 00:14:09 +0000555 *e++ = 53; /* DHCP Message Type */
556 *e++ = 1;
557 *e++ = DHCP_DISCOVER;
wdenk3861aa52002-09-27 23:19:37 +0000558
wdenk232c1502004-03-12 00:14:09 +0000559 *e++ = 57; /* Maximum DHCP Message Size */
560 *e++ = 2;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000561 *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16;
562 *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
Jon Loeliger610f2e92007-07-10 11:05:02 -0500563#endif
wdenk3861aa52002-09-27 23:19:37 +0000564
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500565#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk232c1502004-03-12 00:14:09 +0000566 *e++ = 1; /* Subnet mask request */
567 *e++ = 4;
568 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000569#endif
570
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500571#if defined(CONFIG_BOOTP_GATEWAY)
wdenk232c1502004-03-12 00:14:09 +0000572 *e++ = 3; /* Default gateway request */
573 *e++ = 4;
574 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000575#endif
576
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500577#if defined(CONFIG_BOOTP_DNS)
wdenk232c1502004-03-12 00:14:09 +0000578 *e++ = 6; /* Domain Name Server */
579 *e++ = 4;
580 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000581#endif
582
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500583#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk232c1502004-03-12 00:14:09 +0000584 *e++ = 12; /* Host name request */
585 *e++ = 32;
586 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000587#endif
588
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500589#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk232c1502004-03-12 00:14:09 +0000590 *e++ = 13; /* Boot file size */
591 *e++ = 2;
592 e += 2;
wdenk3861aa52002-09-27 23:19:37 +0000593#endif
594
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500595#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk232c1502004-03-12 00:14:09 +0000596 *e++ = 17; /* Boot path */
597 *e++ = 32;
598 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000599#endif
600
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500601#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk232c1502004-03-12 00:14:09 +0000602 *e++ = 40; /* NIS Domain name request */
603 *e++ = 32;
604 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000605#endif
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000606#if defined(CONFIG_BOOTP_NTPSERVER)
607 *e++ = 42;
608 *e++ = 4;
609 e += 4;
610#endif
wdenk3861aa52002-09-27 23:19:37 +0000611
wdenk232c1502004-03-12 00:14:09 +0000612 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000613
wdenk232c1502004-03-12 00:14:09 +0000614 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000615}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500616#endif
wdenk3861aa52002-09-27 23:19:37 +0000617
618void
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000619BootpRequest(void)
wdenk3861aa52002-09-27 23:19:37 +0000620{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000621 uchar *pkt, *iphdr;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000622 struct Bootp_t *bp;
Joe Hershbergerae446f52012-05-23 07:59:10 +0000623 int extlen, pktlen, iplen;
624 int eth_hdr_size;
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000625#ifdef CONFIG_BOOTP_RANDOM_DELAY
626 ulong i, rand_ms;
627#endif
wdenk3861aa52002-09-27 23:19:37 +0000628
Simon Glass573f14f2011-12-10 11:08:06 +0000629 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start");
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500630#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000631 dhcp_state = INIT;
632#endif
633
634#ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000635 if (BootpTry == 0)
636 srand_mac();
wdenk3861aa52002-09-27 23:19:37 +0000637
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000638 if (BootpTry <= 2) /* Start with max 1024 * 1ms */
639 rand_ms = rand() >> (22 - BootpTry);
640 else /* After 3rd BOOTP request max 8192 * 1ms */
641 rand_ms = rand() >> 19;
wdenk3861aa52002-09-27 23:19:37 +0000642
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000643 printf("Random delay: %ld ms...\n", rand_ms);
644 for (i = 0; i < rand_ms; i++)
wdenk3861aa52002-09-27 23:19:37 +0000645 udelay(1000); /*Wait 1ms*/
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000646
wdenk3861aa52002-09-27 23:19:37 +0000647#endif /* CONFIG_BOOTP_RANDOM_DELAY */
648
649 printf("BOOTP broadcast %d\n", ++BootpTry);
650 pkt = NetTxPacket;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000651 memset((void *)pkt, 0, PKTSIZE);
wdenk3861aa52002-09-27 23:19:37 +0000652
Joe Hershbergerae446f52012-05-23 07:59:10 +0000653 eth_hdr_size = NetSetEther(pkt, NetBcastAddr, PROT_IP);
654 pkt += eth_hdr_size;
wdenk3861aa52002-09-27 23:19:37 +0000655
656 /*
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000657 * Next line results in incorrect packet size being transmitted,
658 * resulting in errors in some DHCP servers, reporting missing bytes.
659 * Size must be set in packet header after extension length has been
660 * determined.
wdenk3861aa52002-09-27 23:19:37 +0000661 * C. Hallinan, DS4.COM, Inc.
662 */
Joe Hershberger4b11c912012-05-23 07:59:07 +0000663 /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC,
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000664 sizeof (struct Bootp_t)); */
Joe Hershberger4b11c912012-05-23 07:59:07 +0000665 iphdr = pkt; /* We need this later for net_set_udp_header() */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000666 pkt += IP_UDP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000667
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000668 bp = (struct Bootp_t *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000669 bp->bp_op = OP_BOOTREQUEST;
670 bp->bp_htype = HWT_ETHER;
671 bp->bp_hlen = HWL_ETHER;
672 bp->bp_hops = 0;
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200673 bp->bp_secs = htons(get_timer(0) / 1000);
wdenk3861aa52002-09-27 23:19:37 +0000674 NetWriteIP(&bp->bp_ciaddr, 0);
675 NetWriteIP(&bp->bp_yiaddr, 0);
676 NetWriteIP(&bp->bp_siaddr, 0);
677 NetWriteIP(&bp->bp_giaddr, 0);
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000678 memcpy(bp->bp_chaddr, NetOurEther, 6);
679 copy_filename(bp->bp_file, BootFile, sizeof(bp->bp_file));
wdenk3861aa52002-09-27 23:19:37 +0000680
681 /* Request additional information from the BOOTP/DHCP server */
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500682#if defined(CONFIG_CMD_DHCP)
Joe Hershbergerae446f52012-05-23 07:59:10 +0000683 extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_DISCOVER, 0, 0);
wdenk3861aa52002-09-27 23:19:37 +0000684#else
Joe Hershbergerae446f52012-05-23 07:59:10 +0000685 extlen = BootpExtended((u8 *)bp->bp_vend);
Jon Loeliger610f2e92007-07-10 11:05:02 -0500686#endif
wdenk3861aa52002-09-27 23:19:37 +0000687
688 /*
689 * Bootp ID is the lower 4 bytes of our ethernet address
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200690 * plus the current time in ms.
wdenk3861aa52002-09-27 23:19:37 +0000691 */
692 BootpID = ((ulong)NetOurEther[2] << 24)
693 | ((ulong)NetOurEther[3] << 16)
694 | ((ulong)NetOurEther[4] << 8)
695 | (ulong)NetOurEther[5];
696 BootpID += get_timer(0);
wdenk232c1502004-03-12 00:14:09 +0000697 BootpID = htonl(BootpID);
wdenk3861aa52002-09-27 23:19:37 +0000698 NetCopyLong(&bp->bp_id, &BootpID);
699
700 /*
701 * Calculate proper packet lengths taking into account the
702 * variable size of the options field
703 */
Joe Hershbergerae446f52012-05-23 07:59:10 +0000704 iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
705 pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
Joe Hershberger4b11c912012-05-23 07:59:07 +0000706 net_set_udp_header(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200707 NetSetTimeout(SELECT_TIMEOUT, BootpTimeout);
wdenk3861aa52002-09-27 23:19:37 +0000708
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500709#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000710 dhcp_state = SELECTING;
Joe Hershbergerece223b2012-05-23 07:59:15 +0000711 net_set_udp_handler(DhcpHandler);
wdenk3861aa52002-09-27 23:19:37 +0000712#else
Joe Hershbergerece223b2012-05-23 07:59:15 +0000713 net_set_udp_handler(BootpHandler);
Jon Loeliger610f2e92007-07-10 11:05:02 -0500714#endif
wdenk3861aa52002-09-27 23:19:37 +0000715 NetSendPacket(NetTxPacket, pktlen);
716}
717
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500718#if defined(CONFIG_CMD_DHCP)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000719static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp)
wdenk3861aa52002-09-27 23:19:37 +0000720{
wdenk3e386912003-04-05 00:53:31 +0000721 uchar *end = popt + BOOTP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000722 int oplen, size;
Wolfgang Denkd8d87242009-09-11 09:05:32 +0200723#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
724 int *to_ptr;
725#endif
wdenk3861aa52002-09-27 23:19:37 +0000726
wdenk232c1502004-03-12 00:14:09 +0000727 while (popt < end && *popt != 0xff) {
wdenk3861aa52002-09-27 23:19:37 +0000728 oplen = *(popt + 1);
wdenk232c1502004-03-12 00:14:09 +0000729 switch (*popt) {
730 case 1:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000731 NetCopyIP(&NetOurSubnetMask, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000732 break;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500733#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkea287de2005-04-01 00:25:43 +0000734 case 2: /* Time offset */
Wolfgang Denkd8d87242009-09-11 09:05:32 +0200735 to_ptr = &NetTimeOffset;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000736 NetCopyLong((ulong *)to_ptr, (ulong *)(popt + 2));
737 NetTimeOffset = ntohl(NetTimeOffset);
wdenkea287de2005-04-01 00:25:43 +0000738 break;
739#endif
wdenk232c1502004-03-12 00:14:09 +0000740 case 3:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000741 NetCopyIP(&NetOurGatewayIP, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000742 break;
743 case 6:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000744 NetCopyIP(&NetOurDNSIP, (popt + 2));
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500745#if defined(CONFIG_BOOTP_DNS2)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000746 if (*(popt + 1) > 4)
747 NetCopyIP(&NetOurDNS2IP, (popt + 2 + 4));
stroesefe389a82003-08-28 14:17:32 +0000748#endif
wdenk232c1502004-03-12 00:14:09 +0000749 break;
750 case 12:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000751 size = truncate_sz("Host Name",
752 sizeof(NetOurHostName), oplen);
753 memcpy(&NetOurHostName, popt + 2, size);
wdenk232c1502004-03-12 00:14:09 +0000754 NetOurHostName[size] = 0;
755 break;
756 case 15: /* Ignore Domain Name Option */
757 break;
758 case 17:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000759 size = truncate_sz("Root Path",
760 sizeof(NetOurRootPath), oplen);
761 memcpy(&NetOurRootPath, popt + 2, size);
wdenk232c1502004-03-12 00:14:09 +0000762 NetOurRootPath[size] = 0;
763 break;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500764#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
wdenkea287de2005-04-01 00:25:43 +0000765 case 42: /* NTP server IP */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000766 NetCopyIP(&NetNtpServerIP, (popt + 2));
wdenkea287de2005-04-01 00:25:43 +0000767 break;
768#endif
wdenk232c1502004-03-12 00:14:09 +0000769 case 51:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000770 NetCopyLong(&dhcp_leasetime, (ulong *) (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000771 break;
772 case 53: /* Ignore Message Type Option */
773 break;
774 case 54:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000775 NetCopyIP(&NetDHCPServerIP, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000776 break;
777 case 58: /* Ignore Renewal Time Option */
778 break;
779 case 59: /* Ignore Rebinding Time Option */
780 break;
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100781 case 66: /* Ignore TFTP server name */
782 break;
783 case 67: /* vendor opt bootfile */
784 /*
785 * I can't use dhcp_vendorex_proc here because I need
786 * to write into the bootp packet - even then I had to
787 * pass the bootp packet pointer into here as the
788 * second arg
789 */
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000790 size = truncate_sz("Opt Boot File",
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100791 sizeof(bp->bp_file),
792 oplen);
793 if (bp->bp_file[0] == '\0' && size > 0) {
794 /*
795 * only use vendor boot file if we didn't
796 * receive a boot file in the main non-vendor
797 * part of the packet - god only knows why
798 * some vendors chose not to use this perfectly
799 * good spot to store the boot file (join on
800 * Tru64 Unix) it seems mind bogglingly crazy
801 * to me
802 */
803 printf("*** WARNING: using vendor "
804 "optional boot file\n");
805 memcpy(bp->bp_file, popt + 2, size);
806 bp->bp_file[size] = '\0';
807 }
808 break;
wdenk232c1502004-03-12 00:14:09 +0000809 default:
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500810#if defined(CONFIG_BOOTP_VENDOREX)
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000811 if (dhcp_vendorex_proc(popt))
wdenk8bde7f72003-06-27 21:31:46 +0000812 break;
wdenk3861aa52002-09-27 23:19:37 +0000813#endif
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000814 printf("*** Unhandled DHCP Option in OFFER/ACK:"
815 " %d\n", *popt);
wdenk232c1502004-03-12 00:14:09 +0000816 break;
wdenk3861aa52002-09-27 23:19:37 +0000817 }
818 popt += oplen + 2; /* Process next option */
819 }
820}
821
822static int DhcpMessageType(unsigned char *popt)
823{
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000824 if (NetReadLong((ulong *)popt) != htonl(BOOTP_VENDOR_MAGIC))
wdenk3861aa52002-09-27 23:19:37 +0000825 return -1;
826
827 popt += 4;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000828 while (*popt != 0xff) {
829 if (*popt == 53) /* DHCP Message Type */
wdenk3861aa52002-09-27 23:19:37 +0000830 return *(popt + 2);
831 popt += *(popt + 1) + 2; /* Scan through all options */
832 }
833 return -1;
834}
835
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000836static void DhcpSendRequestPkt(struct Bootp_t *bp_offer)
wdenk3861aa52002-09-27 23:19:37 +0000837{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000838 uchar *pkt, *iphdr;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000839 struct Bootp_t *bp;
wdenk3861aa52002-09-27 23:19:37 +0000840 int pktlen, iplen, extlen;
Joe Hershbergerae446f52012-05-23 07:59:10 +0000841 int eth_hdr_size;
wdenk47cd00f2003-03-06 13:39:27 +0000842 IPaddr_t OfferedIP;
wdenk3861aa52002-09-27 23:19:37 +0000843
Robin Getz0ebf04c2009-07-23 03:01:03 -0400844 debug("DhcpSendRequestPkt: Sending DHCPREQUEST\n");
wdenk3861aa52002-09-27 23:19:37 +0000845 pkt = NetTxPacket;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000846 memset((void *)pkt, 0, PKTSIZE);
wdenk3861aa52002-09-27 23:19:37 +0000847
Joe Hershbergerae446f52012-05-23 07:59:10 +0000848 eth_hdr_size = NetSetEther(pkt, NetBcastAddr, PROT_IP);
849 pkt += eth_hdr_size;
wdenk3861aa52002-09-27 23:19:37 +0000850
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000851 iphdr = pkt; /* We'll need this later to set proper pkt size */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000852 pkt += IP_UDP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000853
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000854 bp = (struct Bootp_t *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000855 bp->bp_op = OP_BOOTREQUEST;
856 bp->bp_htype = HWT_ETHER;
857 bp->bp_hlen = HWL_ETHER;
858 bp->bp_hops = 0;
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200859 bp->bp_secs = htons(get_timer(0) / 1000);
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000860 /* Do not set the client IP, your IP, or server IP yet, since it
861 * hasn't been ACK'ed by the server yet */
Justin Flammiae5c794e2007-10-29 17:40:35 -0400862
Wolfgang Denkc6686702006-10-12 00:01:08 +0200863 /*
Wolfgang Denkd82718f2006-10-09 01:26:14 +0200864 * RFC3046 requires Relay Agents to discard packets with
865 * nonzero and offered giaddr
866 */
867 NetWriteIP(&bp->bp_giaddr, 0);
868
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000869 memcpy(bp->bp_chaddr, NetOurEther, 6);
wdenk3861aa52002-09-27 23:19:37 +0000870
871 /*
872 * ID is the id of the OFFER packet
873 */
874
875 NetCopyLong(&bp->bp_id, &bp_offer->bp_id);
876
877 /*
878 * Copy options from OFFER packet if present
879 */
Justin Flammiae5c794e2007-10-29 17:40:35 -0400880
881 /* Copy offered IP into the parameters request list */
882 NetCopyIP(&OfferedIP, &bp_offer->bp_yiaddr);
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000883 extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_REQUEST,
884 NetDHCPServerIP, OfferedIP);
wdenk3861aa52002-09-27 23:19:37 +0000885
Joe Hershbergerae446f52012-05-23 07:59:10 +0000886 iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
887 pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
Joe Hershberger4b11c912012-05-23 07:59:07 +0000888 net_set_udp_header(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
wdenk3861aa52002-09-27 23:19:37 +0000889
Aras Vaichasd9a2f412008-03-26 09:43:57 +1100890#ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY
891 udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY);
892#endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */
Joe Hershbergerf9623222012-05-23 07:59:11 +0000893 debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen);
wdenk3861aa52002-09-27 23:19:37 +0000894 NetSendPacket(NetTxPacket, pktlen);
895}
896
897/*
898 * Handle DHCP received packets.
899 */
900static void
Luca Ceresoli03eb1292011-04-18 06:19:50 +0000901DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
902 unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000903{
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000904 struct Bootp_t *bp = (struct Bootp_t *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000905
Robin Getz0ebf04c2009-07-23 03:01:03 -0400906 debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
wdenk3861aa52002-09-27 23:19:37 +0000907 src, dest, len, dhcp_state);
908
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000909 /* Filter out pkts we don't want */
910 if (BootpCheckPkt(pkt, dest, src, len))
wdenk3861aa52002-09-27 23:19:37 +0000911 return;
912
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000913 debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state:"
914 " %d\n", src, dest, len, dhcp_state);
wdenk3861aa52002-09-27 23:19:37 +0000915
916 switch (dhcp_state) {
917 case SELECTING:
918 /*
919 * Wait an appropriate time for any potential DHCPOFFER packets
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000920 * to arrive. Then select one, and generate DHCPREQUEST
921 * response. If filename is in format we recognize, assume it
922 * is a valid OFFER from a server we want.
wdenk3861aa52002-09-27 23:19:37 +0000923 */
Robin Getz0ebf04c2009-07-23 03:01:03 -0400924 debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200925#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +0000926 if (strncmp(bp->bp_file,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200927 CONFIG_SYS_BOOTFILE_PREFIX,
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000928 strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200929#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +0000930
Robin Getz0ebf04c2009-07-23 03:01:03 -0400931 debug("TRANSITIONING TO REQUESTING STATE\n");
wdenk3861aa52002-09-27 23:19:37 +0000932 dhcp_state = REQUESTING;
stroese759a51b2003-04-10 13:26:44 +0000933
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000934 if (NetReadLong((ulong *)&bp->bp_vend[0]) ==
935 htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100936 DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp);
wdenk3861aa52002-09-27 23:19:37 +0000937
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200938 NetSetTimeout(TIMEOUT, BootpTimeout);
wdenk3861aa52002-09-27 23:19:37 +0000939 DhcpSendRequestPkt(bp);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200940#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +0000941 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200942#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +0000943
944 return;
945 break;
946 case REQUESTING:
Robin Getz0ebf04c2009-07-23 03:01:03 -0400947 debug("DHCP State: REQUESTING\n");
wdenk3861aa52002-09-27 23:19:37 +0000948
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000949 if (DhcpMessageType((u8 *)bp->bp_vend) == DHCP_ACK) {
950 if (NetReadLong((ulong *)&bp->bp_vend[0]) ==
951 htonl(BOOTP_VENDOR_MAGIC))
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100952 DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp);
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000953 /* Store net params from reply */
954 BootpCopyNetParams(bp);
wdenk3861aa52002-09-27 23:19:37 +0000955 dhcp_state = BOUND;
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000956 printf("DHCP client bound to address %pI4\n",
957 &NetOurIP);
Simon Glass573f14f2011-12-10 11:08:06 +0000958 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP,
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000959 "bootp_stop");
wdenk3861aa52002-09-27 23:19:37 +0000960
Simon Glasse4a3d572011-10-27 06:24:32 +0000961 net_auto_load();
wdenk3861aa52002-09-27 23:19:37 +0000962 return;
963 }
964 break;
Remy Bohmer51dfe132008-08-20 11:30:28 +0200965 case BOUND:
966 /* DHCP client bound to address */
967 break;
wdenk3861aa52002-09-27 23:19:37 +0000968 default:
Joe Hershberger3090b7e2012-05-15 08:59:06 +0000969 puts("DHCP: INVALID STATE\n");
wdenk3861aa52002-09-27 23:19:37 +0000970 break;
971 }
972
973}
974
975void DhcpRequest(void)
976{
977 BootpRequest();
978}
Wolfgang Denk992742a2007-11-03 23:09:27 +0100979#endif /* CONFIG_CMD_DHCP */