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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>
Simon Glass52f24232020-05-10 11:40:00 -060012#include <bootstage.h>
wdenk3861aa52002-09-27 23:19:37 +000013#include <command.h>
Simon Glass9eef56d2019-08-01 09:46:48 -060014#include <env.h>
Alexander Graf0efe1bc2016-05-06 21:01:01 +020015#include <efi_loader.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060016#include <log.h>
wdenk3861aa52002-09-27 23:19:37 +000017#include <net.h>
Simon Glass90526e92020-05-10 11:39:56 -060018#include <rand.h>
Simon Glassba06b3c2020-05-10 11:39:52 -060019#include <uuid.h>
Simon Glassc05ed002020-05-10 11:40:11 -060020#include <linux/delay.h>
Lukasz Majewski34696952015-08-24 00:21:43 +020021#include <net/tftp.h>
wdenk3861aa52002-09-27 23:19:37 +000022#include "bootp.h"
Uri Mashiach2d8d1902017-01-19 10:51:45 +020023#ifdef CONFIG_LED_STATUS
wdenk3861aa52002-09-27 23:19:37 +000024#include <status_led.h>
25#endif
Kim Phillipsdb7720b2012-07-05 13:19:32 +000026#ifdef CONFIG_BOOTP_RANDOM_DELAY
27#include "net_rand.h"
28#endif
wdenk3861aa52002-09-27 23:19:37 +000029
Joe Hershberger3090b7e32012-05-15 08:59:06 +000030#define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */
wdenk3861aa52002-09-27 23:19:37 +000031
Stephen Warrenf59be6e2014-07-25 17:30:48 -060032/*
33 * The timeout for the initial BOOTP/DHCP request used to be described by a
34 * counter of fixed-length timeout periods. TIMEOUT_COUNT represents
35 * that counter
36 *
37 * Now that the timeout periods are variable (exponential backoff and retry)
38 * we convert the timeout count to the absolute time it would have take to
39 * execute that many retries, and keep sending retry packets until that time
40 * is reached.
41 */
wdenk232c1502004-03-12 00:14:09 +000042#ifndef CONFIG_NET_RETRY_COUNT
Joe Hershberger3090b7e32012-05-15 08:59:06 +000043# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
wdenk3861aa52002-09-27 23:19:37 +000044#else
wdenk232c1502004-03-12 00:14:09 +000045# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
wdenk3861aa52002-09-27 23:19:37 +000046#endif
Stephen Warrenf59be6e2014-07-25 17:30:48 -060047#define TIMEOUT_MS ((3 + (TIMEOUT_COUNT * 5)) * 1000)
wdenk3861aa52002-09-27 23:19:37 +000048
Joe Hershberger3090b7e32012-05-15 08:59:06 +000049#define PORT_BOOTPS 67 /* BOOTP server UDP port */
50#define PORT_BOOTPC 68 /* BOOTP client UDP port */
wdenk3861aa52002-09-27 23:19:37 +000051
Joe Hershberger3090b7e32012-05-15 08:59:06 +000052#ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */
wdenk232c1502004-03-12 00:14:09 +000053#define CONFIG_DHCP_MIN_EXT_LEN 64
wdenk3861aa52002-09-27 23:19:37 +000054#endif
55
Thierry Reding92ac8ac2014-08-19 10:21:24 +020056#ifndef CONFIG_BOOTP_ID_CACHE_SIZE
57#define CONFIG_BOOTP_ID_CACHE_SIZE 4
58#endif
59
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -050060u32 bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE];
Thierry Reding92ac8ac2014-08-19 10:21:24 +020061unsigned int bootp_num_ids;
Joe Hershberger7044c6b2015-04-08 01:41:09 -050062int bootp_try;
Stephen Warrenf59be6e2014-07-25 17:30:48 -060063ulong bootp_start;
64ulong bootp_timeout;
Joe Hershberger586cbe52015-04-08 01:41:03 -050065char net_nis_domain[32] = {0,}; /* Our NIS domain */
66char net_hostname[32] = {0,}; /* Our hostname */
67char net_root_path[64] = {0,}; /* Our bootpath */
wdenk3861aa52002-09-27 23:19:37 +000068
Alexandre Messier50768f52016-02-01 17:08:57 -050069static ulong time_taken_max;
70
Jon Loeliger643d1ab2007-07-09 17:45:14 -050071#if defined(CONFIG_CMD_DHCP)
Kim Phillips06370592012-10-29 13:34:33 +000072static dhcp_state_t dhcp_state = INIT;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -050073static u32 dhcp_leasetime;
Joe Hershberger049a95a2015-04-08 01:41:01 -050074static struct in_addr dhcp_server_ip;
Stefan Brünsec87b1b2015-09-04 00:31:48 +020075static u8 dhcp_option_overload;
76#define OVERLOAD_FILE 1
77#define OVERLOAD_SNAME 2
Joe Hershberger049a95a2015-04-08 01:41:01 -050078static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
79 unsigned src, unsigned len);
wdenk3861aa52002-09-27 23:19:37 +000080
81/* For Debug */
wdenk3e386912003-04-05 00:53:31 +000082#if 0
83static char *dhcpmsg2str(int type)
wdenk3861aa52002-09-27 23:19:37 +000084{
85 switch (type) {
wdenk232c1502004-03-12 00:14:09 +000086 case 1: return "DHCPDISCOVER"; break;
87 case 2: return "DHCPOFFER"; break;
88 case 3: return "DHCPREQUEST"; break;
89 case 4: return "DHCPDECLINE"; break;
90 case 5: return "DHCPACK"; break;
91 case 6: return "DHCPNACK"; break;
92 case 7: return "DHCPRELEASE"; break;
wdenk3861aa52002-09-27 23:19:37 +000093 default: return "UNKNOWN/INVALID MSG TYPE"; break;
94 }
95}
wdenk3e386912003-04-05 00:53:31 +000096#endif
Jon Loeliger610f2e92007-07-10 11:05:02 -050097#endif
wdenk3861aa52002-09-27 23:19:37 +000098
Thierry Reding92ac8ac2014-08-19 10:21:24 +020099static void bootp_add_id(ulong id)
100{
101 if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) {
102 size_t size = sizeof(bootp_ids) - sizeof(id);
103
104 memmove(bootp_ids, &bootp_ids[1], size);
105 bootp_ids[bootp_num_ids - 1] = id;
106 } else {
107 bootp_ids[bootp_num_ids] = id;
108 bootp_num_ids++;
109 }
110}
111
112static bool bootp_match_id(ulong id)
113{
114 unsigned int i;
115
116 for (i = 0; i < bootp_num_ids; i++)
117 if (bootp_ids[i] == id)
118 return true;
119
120 return false;
121}
122
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200123static int check_reply_packet(uchar *pkt, unsigned dest, unsigned src,
124 unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000125{
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500126 struct bootp_hdr *bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000127 int retval = 0;
128
129 if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
130 retval = -1;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500131 else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE)
wdenk3861aa52002-09-27 23:19:37 +0000132 retval = -2;
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200133 else if (bp->bp_op != OP_BOOTREPLY)
wdenk3861aa52002-09-27 23:19:37 +0000134 retval = -3;
wdenk3861aa52002-09-27 23:19:37 +0000135 else if (bp->bp_htype != HWT_ETHER)
136 retval = -4;
137 else if (bp->bp_hlen != HWL_ETHER)
138 retval = -5;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500139 else if (!bootp_match_id(net_read_u32(&bp->bp_id)))
wdenk3861aa52002-09-27 23:19:37 +0000140 retval = -6;
Anton Persson214cc902016-03-17 09:38:21 +0100141 else if (memcmp(bp->bp_chaddr, net_ethaddr, HWL_ETHER) != 0)
142 retval = -7;
wdenk3861aa52002-09-27 23:19:37 +0000143
Robin Getz0ebf04c2009-07-23 03:01:03 -0400144 debug("Filtering pkt = %d\n", retval);
wdenk3861aa52002-09-27 23:19:37 +0000145
146 return retval;
147}
148
Lyle Franklinc8e251f2019-08-05 06:23:42 -0400149static void store_bootp_params(struct bootp_hdr *bp)
wdenk3861aa52002-09-27 23:19:37 +0000150{
Wilson Callan5d110f02007-07-28 10:56:13 -0400151#if !defined(CONFIG_BOOTP_SERVERIP)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500152 struct in_addr tmp_ip;
Alexander Grafbdce3402018-06-15 10:29:28 +0200153 bool overwrite_serverip = true;
154
155#if defined(CONFIG_BOOTP_PREFER_SERVERIP)
156 overwrite_serverip = false;
157#endif
Joe Hershberger1752f0f2012-05-23 07:59:18 +0000158
Joe Hershberger049a95a2015-04-08 01:41:01 -0500159 net_copy_ip(&tmp_ip, &bp->bp_siaddr);
Alexander Grafbdce3402018-06-15 10:29:28 +0200160 if (tmp_ip.s_addr != 0 && (overwrite_serverip || !net_server_ip.s_addr))
Joe Hershberger049a95a2015-04-08 01:41:01 -0500161 net_copy_ip(&net_server_ip, &bp->bp_siaddr);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500162 memcpy(net_server_ethaddr,
163 ((struct ethernet_hdr *)net_rx_packet)->et_src, 6);
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200164 if (
165#if defined(CONFIG_CMD_DHCP)
166 !(dhcp_option_overload & OVERLOAD_FILE) &&
167#endif
Alexander Graf449312c2018-06-15 10:29:27 +0200168 (strlen(bp->bp_file) > 0) &&
169 !net_boot_file_name_explicit) {
Joe Hershberger14111572015-04-08 01:41:02 -0500170 copy_filename(net_boot_file_name, bp->bp_file,
171 sizeof(net_boot_file_name));
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200172 }
wdenk3861aa52002-09-27 23:19:37 +0000173
Joe Hershberger14111572015-04-08 01:41:02 -0500174 debug("net_boot_file_name: %s\n", net_boot_file_name);
wdenk3861aa52002-09-27 23:19:37 +0000175
176 /* Propagate to environment:
wdenk8bde7f72003-06-27 21:31:46 +0000177 * don't delete exising entry when BOOTP / DHCP reply does
wdenk3861aa52002-09-27 23:19:37 +0000178 * not contain a new value
179 */
Joe Hershberger14111572015-04-08 01:41:02 -0500180 if (*net_boot_file_name)
Simon Glass382bee52017-08-03 12:22:09 -0600181 env_set("bootfile", net_boot_file_name);
Wu, Joshecec4e92014-11-18 13:07:08 +0800182#endif
Lyle Franklinc8e251f2019-08-05 06:23:42 -0400183}
184
185/*
186 * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
187 */
188static void store_net_params(struct bootp_hdr *bp)
189{
190#if !defined(CONFIG_SERVERIP_FROM_PROXYDHCP)
191 store_bootp_params(bp);
192#endif
Joe Hershberger049a95a2015-04-08 01:41:01 -0500193 net_copy_ip(&net_ip, &bp->bp_yiaddr);
wdenk3861aa52002-09-27 23:19:37 +0000194}
195
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000196static int truncate_sz(const char *name, int maxlen, int curlen)
wdenk3861aa52002-09-27 23:19:37 +0000197{
198 if (curlen >= maxlen) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000199 printf("*** WARNING: %s is too long (%d - max: %d)"
200 " - truncated\n", name, curlen, maxlen);
wdenk3861aa52002-09-27 23:19:37 +0000201 curlen = maxlen - 1;
202 }
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000203 return curlen;
wdenk3861aa52002-09-27 23:19:37 +0000204}
205
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500206#if !defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000207
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500208static void bootp_process_vendor_field(u8 *ext)
wdenk3861aa52002-09-27 23:19:37 +0000209{
wdenk232c1502004-03-12 00:14:09 +0000210 int size = *(ext + 1);
wdenk3861aa52002-09-27 23:19:37 +0000211
Robin Getz0ebf04c2009-07-23 03:01:03 -0400212 debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext,
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500213 *(ext + 1));
wdenk3861aa52002-09-27 23:19:37 +0000214
Joe Hershberger14111572015-04-08 01:41:02 -0500215 net_boot_file_expected_size_in_blocks = 0;
wdenk3861aa52002-09-27 23:19:37 +0000216
wdenk232c1502004-03-12 00:14:09 +0000217 switch (*ext) {
218 /* Fixed length fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000219 case 1: /* Subnet mask */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500220 if (net_netmask.s_addr == 0)
221 net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000222 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000223 case 2: /* Time offset - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000224 break;
wdenk232c1502004-03-12 00:14:09 +0000225 /* Variable length fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000226 case 3: /* Gateways list */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500227 if (net_gateway.s_addr == 0)
228 net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000229 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000230 case 4: /* Time server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000231 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000232 case 5: /* IEN-116 name server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000233 break;
234 case 6:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500235 if (net_dns_server.s_addr == 0)
236 net_copy_ip(&net_dns_server,
237 (struct in_addr *)(ext + 2));
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500238#if defined(CONFIG_BOOTP_DNS2)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500239 if ((net_dns_server2.s_addr == 0) && (size > 4))
240 net_copy_ip(&net_dns_server2,
241 (struct in_addr *)(ext + 2 + 4));
stroesefe389a82003-08-28 14:17:32 +0000242#endif
wdenk3861aa52002-09-27 23:19:37 +0000243 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000244 case 7: /* Log server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000245 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000246 case 8: /* Cookie/Quote server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000247 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000248 case 9: /* LPR server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000249 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000250 case 10: /* Impress server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000251 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000252 case 11: /* RPL server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000253 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000254 case 12: /* Host name */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500255 if (net_hostname[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000256 size = truncate_sz("Host Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500257 sizeof(net_hostname), size);
258 memcpy(&net_hostname, ext + 2, size);
259 net_hostname[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000260 }
261 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000262 case 13: /* Boot file size */
wdenk3861aa52002-09-27 23:19:37 +0000263 if (size == 2)
Joe Hershberger14111572015-04-08 01:41:02 -0500264 net_boot_file_expected_size_in_blocks =
265 ntohs(*(ushort *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000266 else if (size == 4)
Joe Hershberger14111572015-04-08 01:41:02 -0500267 net_boot_file_expected_size_in_blocks =
268 ntohl(*(ulong *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000269 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000270 case 14: /* Merit dump file - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000271 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000272 case 15: /* Domain name - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000273 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000274 case 16: /* Swap server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000275 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000276 case 17: /* Root path */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500277 if (net_root_path[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000278 size = truncate_sz("Root Path",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500279 sizeof(net_root_path), size);
280 memcpy(&net_root_path, ext + 2, size);
281 net_root_path[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000282 }
283 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000284 case 18: /* Extension path - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000285 /*
wdenk8bde7f72003-06-27 21:31:46 +0000286 * This can be used to send the information of the
287 * vendor area in another file that the client can
288 * access via TFTP.
wdenk3861aa52002-09-27 23:19:37 +0000289 */
290 break;
wdenk232c1502004-03-12 00:14:09 +0000291 /* IP host layer fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000292 case 40: /* NIS Domain name */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500293 if (net_nis_domain[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000294 size = truncate_sz("NIS Domain Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500295 sizeof(net_nis_domain), size);
296 memcpy(&net_nis_domain, ext + 2, size);
297 net_nis_domain[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000298 }
299 break;
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000300#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
301 case 42: /* NTP server IP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500302 net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2));
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000303 break;
304#endif
wdenk232c1502004-03-12 00:14:09 +0000305 /* Application layer fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000306 case 43: /* Vendor specific info - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000307 /*
wdenk8bde7f72003-06-27 21:31:46 +0000308 * Binary information to exchange specific
309 * product information.
wdenk3861aa52002-09-27 23:19:37 +0000310 */
311 break;
wdenk232c1502004-03-12 00:14:09 +0000312 /* Reserved (custom) fields (128..254) */
313 }
wdenk3861aa52002-09-27 23:19:37 +0000314}
315
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500316static void bootp_process_vendor(u8 *ext, int size)
wdenk3861aa52002-09-27 23:19:37 +0000317{
wdenk232c1502004-03-12 00:14:09 +0000318 u8 *end = ext + size;
wdenk3861aa52002-09-27 23:19:37 +0000319
Robin Getz0ebf04c2009-07-23 03:01:03 -0400320 debug("[BOOTP] Checking extension (%d bytes)...\n", size);
wdenk3861aa52002-09-27 23:19:37 +0000321
wdenk232c1502004-03-12 00:14:09 +0000322 while ((ext < end) && (*ext != 0xff)) {
323 if (*ext == 0) {
324 ext++;
325 } else {
326 u8 *opt = ext;
327
328 ext += ext[1] + 2;
329 if (ext <= end)
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500330 bootp_process_vendor_field(opt);
wdenk232c1502004-03-12 00:14:09 +0000331 }
wdenk3861aa52002-09-27 23:19:37 +0000332 }
wdenk3861aa52002-09-27 23:19:37 +0000333
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000334 debug("[BOOTP] Received fields:\n");
Joe Hershberger049a95a2015-04-08 01:41:01 -0500335 if (net_netmask.s_addr)
336 debug("net_netmask : %pI4\n", &net_netmask);
wdenk3861aa52002-09-27 23:19:37 +0000337
Joe Hershberger049a95a2015-04-08 01:41:01 -0500338 if (net_gateway.s_addr)
339 debug("net_gateway : %pI4", &net_gateway);
wdenk3861aa52002-09-27 23:19:37 +0000340
Joe Hershberger14111572015-04-08 01:41:02 -0500341 if (net_boot_file_expected_size_in_blocks)
342 debug("net_boot_file_expected_size_in_blocks : %d\n",
343 net_boot_file_expected_size_in_blocks);
wdenk3861aa52002-09-27 23:19:37 +0000344
Joe Hershberger586cbe52015-04-08 01:41:03 -0500345 if (net_hostname[0])
346 debug("net_hostname : %s\n", net_hostname);
wdenk3861aa52002-09-27 23:19:37 +0000347
Joe Hershberger586cbe52015-04-08 01:41:03 -0500348 if (net_root_path[0])
349 debug("net_root_path : %s\n", net_root_path);
wdenk3861aa52002-09-27 23:19:37 +0000350
Joe Hershberger586cbe52015-04-08 01:41:03 -0500351 if (net_nis_domain[0])
352 debug("net_nis_domain : %s\n", net_nis_domain);
wdenk3861aa52002-09-27 23:19:37 +0000353
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000354#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
Chris Packham4b4dc522018-05-03 20:19:03 +1200355 if (net_ntp_server.s_addr)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500356 debug("net_ntp_server : %pI4\n", &net_ntp_server);
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000357#endif
wdenk3861aa52002-09-27 23:19:37 +0000358}
Simon Glass09349862011-06-13 16:13:12 -0700359
wdenk3861aa52002-09-27 23:19:37 +0000360/*
361 * Handle a BOOTP received packet.
362 */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500363static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
364 unsigned src, unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000365{
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500366 struct bootp_hdr *bp;
wdenk3861aa52002-09-27 23:19:37 +0000367
Robin Getz0ebf04c2009-07-23 03:01:03 -0400368 debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500369 src, dest, len, sizeof(struct bootp_hdr));
wdenk3861aa52002-09-27 23:19:37 +0000370
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500371 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000372
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000373 /* Filter out pkts we don't want */
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200374 if (check_reply_packet(pkt, dest, src, len))
wdenk3861aa52002-09-27 23:19:37 +0000375 return;
376
377 /*
wdenk232c1502004-03-12 00:14:09 +0000378 * Got a good BOOTP reply. Copy the data into our variables.
wdenk3861aa52002-09-27 23:19:37 +0000379 */
Uri Mashiach2d8d1902017-01-19 10:51:45 +0200380#if defined(CONFIG_LED_STATUS) && defined(CONFIG_LED_STATUS_BOOT_ENABLE)
381 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_OFF);
wdenk3861aa52002-09-27 23:19:37 +0000382#endif
383
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500384 store_net_params(bp); /* Store net parameters from reply */
wdenk3861aa52002-09-27 23:19:37 +0000385
386 /* Retrieve extended information (we must parse the vendor area) */
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500387 if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500388 bootp_process_vendor((uchar *)&bp->bp_vend[4], len);
wdenk3861aa52002-09-27 23:19:37 +0000389
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500390 net_set_timeout_handler(0, (thand_f *)0);
Simon Glass573f14f2011-12-10 11:08:06 +0000391 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop");
wdenk3861aa52002-09-27 23:19:37 +0000392
Robin Getz0ebf04c2009-07-23 03:01:03 -0400393 debug("Got good BOOTP\n");
wdenk3861aa52002-09-27 23:19:37 +0000394
Simon Glasse4a3d572011-10-27 06:24:32 +0000395 net_auto_load();
wdenk3861aa52002-09-27 23:19:37 +0000396}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500397#endif
wdenk3861aa52002-09-27 23:19:37 +0000398
399/*
400 * Timeout on BOOTP/DHCP request.
401 */
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500402static void bootp_timeout_handler(void)
wdenk3861aa52002-09-27 23:19:37 +0000403{
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600404 ulong time_taken = get_timer(bootp_start);
405
Alexandre Messier50768f52016-02-01 17:08:57 -0500406 if (time_taken >= time_taken_max) {
Joe Hershberger2c00e092012-05-23 07:59:19 +0000407#ifdef CONFIG_BOOTP_MAY_FAIL
Joe Hershberger2099b9f2017-11-07 18:13:40 -0800408 char *ethrotate;
409
410 ethrotate = env_get("ethrotate");
411 if ((ethrotate && strcmp(ethrotate, "no") == 0) ||
412 net_restart_wrap) {
413 puts("\nRetry time exceeded\n");
414 net_set_state(NETLOOP_FAIL);
415 } else
Joe Hershberger2c00e092012-05-23 07:59:19 +0000416#endif
Joe Hershberger2099b9f2017-11-07 18:13:40 -0800417 {
418 puts("\nRetry time exceeded; starting again\n");
419 net_start_again();
420 }
wdenk3861aa52002-09-27 23:19:37 +0000421 } else {
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600422 bootp_timeout *= 2;
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200423 if (bootp_timeout > 2000)
424 bootp_timeout = 2000;
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500425 net_set_timeout_handler(bootp_timeout, bootp_timeout_handler);
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500426 bootp_request();
wdenk3861aa52002-09-27 23:19:37 +0000427 }
428}
429
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000430#define put_vci(e, str) \
431 do { \
432 size_t vci_strlen = strlen(str); \
433 *e++ = 60; /* Vendor Class Identifier */ \
434 *e++ = vci_strlen; \
435 memcpy(e, str, vci_strlen); \
436 e += vci_strlen; \
437 } while (0)
438
Alexander Graf4570a992016-05-06 21:01:02 +0200439static u8 *add_vci(u8 *e)
440{
Alexander Graf20898ea2016-05-06 21:01:07 +0200441 char *vci = NULL;
Simon Glass00caae62017-08-03 12:22:12 -0600442 char *env_vci = env_get("bootp_vci");
Alexander Graf20898ea2016-05-06 21:01:07 +0200443
Alexander Graf4570a992016-05-06 21:01:02 +0200444#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING)
Alexander Graf20898ea2016-05-06 21:01:07 +0200445 vci = CONFIG_SPL_NET_VCI_STRING;
Alexander Graf4570a992016-05-06 21:01:02 +0200446#elif defined(CONFIG_BOOTP_VCI_STRING)
Alexander Graf20898ea2016-05-06 21:01:07 +0200447 vci = CONFIG_BOOTP_VCI_STRING;
Alexander Graf4570a992016-05-06 21:01:02 +0200448#endif
449
Alexander Graf20898ea2016-05-06 21:01:07 +0200450 if (env_vci)
451 vci = env_vci;
452
453 if (vci)
454 put_vci(e, vci);
455
Alexander Graf4570a992016-05-06 21:01:02 +0200456 return e;
457}
458
wdenk3861aa52002-09-27 23:19:37 +0000459/*
460 * Initialize BOOTP extension fields in the request.
461 */
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500462#if defined(CONFIG_CMD_DHCP)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500463static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip,
464 struct in_addr requested_ip)
wdenk3861aa52002-09-27 23:19:37 +0000465{
wdenk232c1502004-03-12 00:14:09 +0000466 u8 *start = e;
467 u8 *cnt;
Alexander Grafbc6fc282016-05-12 15:51:45 +0200468#ifdef CONFIG_LIB_UUID
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000469 char *uuid;
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000470#endif
Alexander Grafbc6fc282016-05-12 15:51:45 +0200471 int clientarch = -1;
wdenk232c1502004-03-12 00:14:09 +0000472
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500473#if defined(CONFIG_BOOTP_VENDOREX)
wdenk232c1502004-03-12 00:14:09 +0000474 u8 *x;
wdenk3861aa52002-09-27 23:19:37 +0000475#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500476#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200477 char *hostname;
stroesefe389a82003-08-28 14:17:32 +0000478#endif
wdenk3861aa52002-09-27 23:19:37 +0000479
wdenk232c1502004-03-12 00:14:09 +0000480 *e++ = 99; /* RFC1048 Magic Cookie */
481 *e++ = 130;
482 *e++ = 83;
483 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000484
wdenk232c1502004-03-12 00:14:09 +0000485 *e++ = 53; /* DHCP Message Type */
486 *e++ = 1;
487 *e++ = message_type;
wdenk3861aa52002-09-27 23:19:37 +0000488
wdenk232c1502004-03-12 00:14:09 +0000489 *e++ = 57; /* Maximum DHCP Message Size */
490 *e++ = 2;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000491 *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8;
492 *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
wdenk3861aa52002-09-27 23:19:37 +0000493
Joe Hershberger049a95a2015-04-08 01:41:01 -0500494 if (server_ip.s_addr) {
495 int tmp = ntohl(server_ip.s_addr);
wdenk3861aa52002-09-27 23:19:37 +0000496
wdenk232c1502004-03-12 00:14:09 +0000497 *e++ = 54; /* ServerID */
498 *e++ = 4;
499 *e++ = tmp >> 24;
500 *e++ = tmp >> 16;
501 *e++ = tmp >> 8;
502 *e++ = tmp & 0xff;
503 }
wdenk3861aa52002-09-27 23:19:37 +0000504
Joe Hershberger049a95a2015-04-08 01:41:01 -0500505 if (requested_ip.s_addr) {
506 int tmp = ntohl(requested_ip.s_addr);
wdenk3861aa52002-09-27 23:19:37 +0000507
wdenk232c1502004-03-12 00:14:09 +0000508 *e++ = 50; /* Requested IP */
509 *e++ = 4;
510 *e++ = tmp >> 24;
511 *e++ = tmp >> 16;
512 *e++ = tmp >> 8;
513 *e++ = tmp & 0xff;
514 }
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500515#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Simon Glass00caae62017-08-03 12:22:12 -0600516 hostname = env_get("hostname");
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000517 if (hostname) {
518 int hostnamelen = strlen(hostname);
wdenk232c1502004-03-12 00:14:09 +0000519
520 *e++ = 12; /* Hostname */
521 *e++ = hostnamelen;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000522 memcpy(e, hostname, hostnamelen);
wdenk232c1502004-03-12 00:14:09 +0000523 e += hostnamelen;
524 }
stroesefe389a82003-08-28 14:17:32 +0000525#endif
526
Alexander Grafbc6fc282016-05-12 15:51:45 +0200527#ifdef CONFIG_BOOTP_PXE_CLIENTARCH
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000528 clientarch = CONFIG_BOOTP_PXE_CLIENTARCH;
Alexander Grafbc6fc282016-05-12 15:51:45 +0200529#endif
530
Simon Glass00caae62017-08-03 12:22:12 -0600531 if (env_get("bootp_arch"))
Simon Glassbfebc8c2017-08-03 12:22:13 -0600532 clientarch = env_get_ulong("bootp_arch", 16, clientarch);
Alexander Grafbc6fc282016-05-12 15:51:45 +0200533
534 if (clientarch > 0) {
535 *e++ = 93; /* Client System Architecture */
536 *e++ = 2;
537 *e++ = (clientarch >> 8) & 0xff;
538 *e++ = clientarch & 0xff;
539 }
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000540
541 *e++ = 94; /* Client Network Interface Identifier */
542 *e++ = 3;
543 *e++ = 1; /* type field for UNDI */
544 *e++ = 0; /* major revision */
545 *e++ = 0; /* minor revision */
546
Alexander Grafbc6fc282016-05-12 15:51:45 +0200547#ifdef CONFIG_LIB_UUID
Simon Glass00caae62017-08-03 12:22:12 -0600548 uuid = env_get("pxeuuid");
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000549
550 if (uuid) {
551 if (uuid_str_valid(uuid)) {
552 *e++ = 97; /* Client Machine Identifier */
553 *e++ = 17;
554 *e++ = 0; /* type 0 - UUID */
555
Przemyslaw Marczakd718ded2014-04-02 10:20:03 +0200556 uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD);
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000557 e += 16;
558 } else {
559 printf("Invalid pxeuuid: %s\n", uuid);
560 }
561 }
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000562#endif
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000563
Alexander Graf4570a992016-05-06 21:01:02 +0200564 e = add_vci(e);
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000565
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500566#if defined(CONFIG_BOOTP_VENDOREX)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000567 x = dhcp_vendorex_prep(e);
568 if (x)
wdenk232c1502004-03-12 00:14:09 +0000569 return x - start;
wdenk3861aa52002-09-27 23:19:37 +0000570#endif
571
wdenk232c1502004-03-12 00:14:09 +0000572 *e++ = 55; /* Parameter Request List */
573 cnt = e++; /* Pointer to count of requested items */
574 *cnt = 0;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500575#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk232c1502004-03-12 00:14:09 +0000576 *e++ = 1; /* Subnet Mask */
577 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000578#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500579#if defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkea287de2005-04-01 00:25:43 +0000580 *e++ = 2;
581 *cnt += 1;
582#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500583#if defined(CONFIG_BOOTP_GATEWAY)
wdenk232c1502004-03-12 00:14:09 +0000584 *e++ = 3; /* Router Option */
585 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000586#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500587#if defined(CONFIG_BOOTP_DNS)
wdenk232c1502004-03-12 00:14:09 +0000588 *e++ = 6; /* DNS Server(s) */
589 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000590#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500591#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk232c1502004-03-12 00:14:09 +0000592 *e++ = 12; /* Hostname */
593 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000594#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500595#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk232c1502004-03-12 00:14:09 +0000596 *e++ = 13; /* Boot File Size */
597 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000598#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500599#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk232c1502004-03-12 00:14:09 +0000600 *e++ = 17; /* Boot path */
601 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000602#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500603#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk232c1502004-03-12 00:14:09 +0000604 *e++ = 40; /* NIS Domain name request */
605 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000606#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500607#if defined(CONFIG_BOOTP_NTPSERVER)
wdenkea287de2005-04-01 00:25:43 +0000608 *e++ = 42;
609 *cnt += 1;
610#endif
Jason Liu258ccd62010-11-14 12:23:09 +0800611 /* no options, so back up to avoid sending an empty request list */
612 if (*cnt == 0)
613 e -= 2;
614
wdenk232c1502004-03-12 00:14:09 +0000615 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000616
wdenk232c1502004-03-12 00:14:09 +0000617 /* Pad to minimal length */
wdenk3861aa52002-09-27 23:19:37 +0000618#ifdef CONFIG_DHCP_MIN_EXT_LEN
Simon Glass21076f62011-02-02 15:03:28 -0800619 while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN)
wdenk232c1502004-03-12 00:14:09 +0000620 *e++ = 0;
wdenk3861aa52002-09-27 23:19:37 +0000621#endif
622
wdenk232c1502004-03-12 00:14:09 +0000623 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000624}
625
Jon Loeliger610f2e92007-07-10 11:05:02 -0500626#else
wdenk3861aa52002-09-27 23:19:37 +0000627/*
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000628 * Warning: no field size check - change CONFIG_BOOTP_* at your own risk!
wdenk3861aa52002-09-27 23:19:37 +0000629 */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500630static int bootp_extended(u8 *e)
wdenk3861aa52002-09-27 23:19:37 +0000631{
wdenk232c1502004-03-12 00:14:09 +0000632 u8 *start = e;
wdenk3861aa52002-09-27 23:19:37 +0000633
wdenk232c1502004-03-12 00:14:09 +0000634 *e++ = 99; /* RFC1048 Magic Cookie */
635 *e++ = 130;
636 *e++ = 83;
637 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000638
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500639#if defined(CONFIG_CMD_DHCP)
wdenk232c1502004-03-12 00:14:09 +0000640 *e++ = 53; /* DHCP Message Type */
641 *e++ = 1;
642 *e++ = DHCP_DISCOVER;
wdenk3861aa52002-09-27 23:19:37 +0000643
wdenk232c1502004-03-12 00:14:09 +0000644 *e++ = 57; /* Maximum DHCP Message Size */
645 *e++ = 2;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000646 *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16;
647 *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
Jon Loeliger610f2e92007-07-10 11:05:02 -0500648#endif
wdenk3861aa52002-09-27 23:19:37 +0000649
Walter Stolld4a660a2021-10-12 11:01:59 +0000650 e = add_vci(e);
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000651
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500652#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk232c1502004-03-12 00:14:09 +0000653 *e++ = 1; /* Subnet mask request */
654 *e++ = 4;
655 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000656#endif
657
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500658#if defined(CONFIG_BOOTP_GATEWAY)
wdenk232c1502004-03-12 00:14:09 +0000659 *e++ = 3; /* Default gateway request */
660 *e++ = 4;
661 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000662#endif
663
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500664#if defined(CONFIG_BOOTP_DNS)
wdenk232c1502004-03-12 00:14:09 +0000665 *e++ = 6; /* Domain Name Server */
666 *e++ = 4;
667 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000668#endif
669
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500670#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk232c1502004-03-12 00:14:09 +0000671 *e++ = 12; /* Host name request */
672 *e++ = 32;
673 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000674#endif
675
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500676#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk232c1502004-03-12 00:14:09 +0000677 *e++ = 13; /* Boot file size */
678 *e++ = 2;
679 e += 2;
wdenk3861aa52002-09-27 23:19:37 +0000680#endif
681
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500682#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk232c1502004-03-12 00:14:09 +0000683 *e++ = 17; /* Boot path */
684 *e++ = 32;
685 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000686#endif
687
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500688#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk232c1502004-03-12 00:14:09 +0000689 *e++ = 40; /* NIS Domain name request */
690 *e++ = 32;
691 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000692#endif
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000693#if defined(CONFIG_BOOTP_NTPSERVER)
694 *e++ = 42;
695 *e++ = 4;
696 e += 4;
697#endif
wdenk3861aa52002-09-27 23:19:37 +0000698
wdenk232c1502004-03-12 00:14:09 +0000699 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000700
Andre Renaud166c4092016-05-05 07:28:08 -0600701 /*
702 * If nothing in list, remove it altogether. Some DHCP servers get
703 * upset by this minor faux pas and do not respond at all.
704 */
705 if (e == start + 3) {
706 printf("*** Warning: no DHCP options requested\n");
707 e -= 3;
708 }
709
wdenk232c1502004-03-12 00:14:09 +0000710 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000711}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500712#endif
wdenk3861aa52002-09-27 23:19:37 +0000713
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500714void bootp_reset(void)
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600715{
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200716 bootp_num_ids = 0;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500717 bootp_try = 0;
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600718 bootp_start = get_timer(0);
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200719 bootp_timeout = 250;
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600720}
721
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500722void bootp_request(void)
wdenk3861aa52002-09-27 23:19:37 +0000723{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000724 uchar *pkt, *iphdr;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500725 struct bootp_hdr *bp;
Joe Hershbergerae446f52012-05-23 07:59:10 +0000726 int extlen, pktlen, iplen;
727 int eth_hdr_size;
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000728#ifdef CONFIG_BOOTP_RANDOM_DELAY
Pavel Machek8e8d73b2014-07-11 11:39:37 +0200729 ulong rand_ms;
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000730#endif
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500731 u32 bootp_id;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500732 struct in_addr zero_ip;
733 struct in_addr bcast_ip;
Alexandre Messier50768f52016-02-01 17:08:57 -0500734 char *ep; /* Environment pointer */
wdenk3861aa52002-09-27 23:19:37 +0000735
Simon Glass573f14f2011-12-10 11:08:06 +0000736 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start");
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500737#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000738 dhcp_state = INIT;
739#endif
740
Simon Glass00caae62017-08-03 12:22:12 -0600741 ep = env_get("bootpretryperiod");
Alexandre Messier50768f52016-02-01 17:08:57 -0500742 if (ep != NULL)
Simon Glass0b1284e2021-07-24 09:03:30 -0600743 time_taken_max = dectoul(ep, NULL);
Alexandre Messier50768f52016-02-01 17:08:57 -0500744 else
745 time_taken_max = TIMEOUT_MS;
746
wdenk3861aa52002-09-27 23:19:37 +0000747#ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500748 if (bootp_try == 0)
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000749 srand_mac();
wdenk3861aa52002-09-27 23:19:37 +0000750
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500751 if (bootp_try <= 2) /* Start with max 1024 * 1ms */
752 rand_ms = rand() >> (22 - bootp_try);
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000753 else /* After 3rd BOOTP request max 8192 * 1ms */
754 rand_ms = rand() >> 19;
wdenk3861aa52002-09-27 23:19:37 +0000755
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000756 printf("Random delay: %ld ms...\n", rand_ms);
Pavel Machek8e8d73b2014-07-11 11:39:37 +0200757 mdelay(rand_ms);
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000758
wdenk3861aa52002-09-27 23:19:37 +0000759#endif /* CONFIG_BOOTP_RANDOM_DELAY */
760
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500761 printf("BOOTP broadcast %d\n", ++bootp_try);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500762 pkt = net_tx_packet;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000763 memset((void *)pkt, 0, PKTSIZE);
wdenk3861aa52002-09-27 23:19:37 +0000764
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500765 eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP);
Joe Hershbergerae446f52012-05-23 07:59:10 +0000766 pkt += eth_hdr_size;
wdenk3861aa52002-09-27 23:19:37 +0000767
768 /*
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000769 * Next line results in incorrect packet size being transmitted,
770 * resulting in errors in some DHCP servers, reporting missing bytes.
771 * Size must be set in packet header after extension length has been
772 * determined.
wdenk3861aa52002-09-27 23:19:37 +0000773 * C. Hallinan, DS4.COM, Inc.
774 */
Joe Hershberger4b11c912012-05-23 07:59:07 +0000775 /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC,
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500776 sizeof (struct bootp_hdr)); */
Joe Hershberger4b11c912012-05-23 07:59:07 +0000777 iphdr = pkt; /* We need this later for net_set_udp_header() */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000778 pkt += IP_UDP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000779
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500780 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000781 bp->bp_op = OP_BOOTREQUEST;
782 bp->bp_htype = HWT_ETHER;
783 bp->bp_hlen = HWL_ETHER;
784 bp->bp_hops = 0;
Stefan Brüns454d9d32015-08-27 23:57:18 +0200785 /*
786 * according to RFC1542, should be 0 on first request, secs since
787 * first request otherwise
788 */
789 bp->bp_secs = htons(get_timer(bootp_start) / 1000);
Joe Hershberger049a95a2015-04-08 01:41:01 -0500790 zero_ip.s_addr = 0;
791 net_write_ip(&bp->bp_ciaddr, zero_ip);
792 net_write_ip(&bp->bp_yiaddr, zero_ip);
793 net_write_ip(&bp->bp_siaddr, zero_ip);
794 net_write_ip(&bp->bp_giaddr, zero_ip);
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500795 memcpy(bp->bp_chaddr, net_ethaddr, 6);
Joe Hershberger14111572015-04-08 01:41:02 -0500796 copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file));
wdenk3861aa52002-09-27 23:19:37 +0000797
798 /* Request additional information from the BOOTP/DHCP server */
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500799#if defined(CONFIG_CMD_DHCP)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500800 extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip,
801 zero_ip);
wdenk3861aa52002-09-27 23:19:37 +0000802#else
Joe Hershberger049a95a2015-04-08 01:41:01 -0500803 extlen = bootp_extended((u8 *)bp->bp_vend);
Jon Loeliger610f2e92007-07-10 11:05:02 -0500804#endif
wdenk3861aa52002-09-27 23:19:37 +0000805
806 /*
807 * Bootp ID is the lower 4 bytes of our ethernet address
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200808 * plus the current time in ms.
wdenk3861aa52002-09-27 23:19:37 +0000809 */
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500810 bootp_id = ((u32)net_ethaddr[2] << 24)
811 | ((u32)net_ethaddr[3] << 16)
812 | ((u32)net_ethaddr[4] << 8)
813 | (u32)net_ethaddr[5];
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500814 bootp_id += get_timer(0);
815 bootp_id = htonl(bootp_id);
816 bootp_add_id(bootp_id);
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500817 net_copy_u32(&bp->bp_id, &bootp_id);
wdenk3861aa52002-09-27 23:19:37 +0000818
819 /*
820 * Calculate proper packet lengths taking into account the
821 * variable size of the options field
822 */
Joe Hershbergerae446f52012-05-23 07:59:10 +0000823 iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
824 pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500825 bcast_ip.s_addr = 0xFFFFFFFFL;
826 net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500827 net_set_timeout_handler(bootp_timeout, bootp_timeout_handler);
wdenk3861aa52002-09-27 23:19:37 +0000828
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500829#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000830 dhcp_state = SELECTING;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500831 net_set_udp_handler(dhcp_handler);
wdenk3861aa52002-09-27 23:19:37 +0000832#else
Joe Hershberger049a95a2015-04-08 01:41:01 -0500833 net_set_udp_handler(bootp_handler);
Jon Loeliger610f2e92007-07-10 11:05:02 -0500834#endif
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500835 net_send_packet(net_tx_packet, pktlen);
wdenk3861aa52002-09-27 23:19:37 +0000836}
837
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500838#if defined(CONFIG_CMD_DHCP)
Stefan Brüns774c3e02015-09-04 00:31:49 +0200839static void dhcp_process_options(uchar *popt, uchar *end)
wdenk3861aa52002-09-27 23:19:37 +0000840{
wdenk3861aa52002-09-27 23:19:37 +0000841 int oplen, size;
Wolfgang Denkd8d87242009-09-11 09:05:32 +0200842#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
843 int *to_ptr;
844#endif
wdenk3861aa52002-09-27 23:19:37 +0000845
wdenk232c1502004-03-12 00:14:09 +0000846 while (popt < end && *popt != 0xff) {
wdenk3861aa52002-09-27 23:19:37 +0000847 oplen = *(popt + 1);
wdenk232c1502004-03-12 00:14:09 +0000848 switch (*popt) {
Stefan Brünsc56eb572015-08-28 10:15:54 +0200849 case 0:
850 oplen = -1; /* Pad omits len byte */
851 break;
wdenk232c1502004-03-12 00:14:09 +0000852 case 1:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500853 net_copy_ip(&net_netmask, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000854 break;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500855#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkea287de2005-04-01 00:25:43 +0000856 case 2: /* Time offset */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500857 to_ptr = &net_ntp_time_offset;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500858 net_copy_u32((u32 *)to_ptr, (u32 *)(popt + 2));
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500859 net_ntp_time_offset = ntohl(net_ntp_time_offset);
wdenkea287de2005-04-01 00:25:43 +0000860 break;
861#endif
wdenk232c1502004-03-12 00:14:09 +0000862 case 3:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500863 net_copy_ip(&net_gateway, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000864 break;
865 case 6:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500866 net_copy_ip(&net_dns_server, (popt + 2));
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500867#if defined(CONFIG_BOOTP_DNS2)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000868 if (*(popt + 1) > 4)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500869 net_copy_ip(&net_dns_server2, (popt + 2 + 4));
stroesefe389a82003-08-28 14:17:32 +0000870#endif
wdenk232c1502004-03-12 00:14:09 +0000871 break;
872 case 12:
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000873 size = truncate_sz("Host Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500874 sizeof(net_hostname), oplen);
875 memcpy(&net_hostname, popt + 2, size);
876 net_hostname[size] = 0;
wdenk232c1502004-03-12 00:14:09 +0000877 break;
878 case 15: /* Ignore Domain Name Option */
879 break;
880 case 17:
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000881 size = truncate_sz("Root Path",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500882 sizeof(net_root_path), oplen);
883 memcpy(&net_root_path, popt + 2, size);
884 net_root_path[size] = 0;
wdenk232c1502004-03-12 00:14:09 +0000885 break;
Brian Rzyckiee0f60d2012-09-11 09:22:53 +0000886 case 28: /* Ignore Broadcast Address Option */
887 break;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500888#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
wdenkea287de2005-04-01 00:25:43 +0000889 case 42: /* NTP server IP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500890 net_copy_ip(&net_ntp_server, (popt + 2));
wdenkea287de2005-04-01 00:25:43 +0000891 break;
892#endif
wdenk232c1502004-03-12 00:14:09 +0000893 case 51:
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500894 net_copy_u32(&dhcp_leasetime, (u32 *)(popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000895 break;
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200896 case 52:
897 dhcp_option_overload = popt[2];
898 break;
wdenk232c1502004-03-12 00:14:09 +0000899 case 53: /* Ignore Message Type Option */
900 break;
901 case 54:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500902 net_copy_ip(&dhcp_server_ip, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000903 break;
904 case 58: /* Ignore Renewal Time Option */
905 break;
906 case 59: /* Ignore Rebinding Time Option */
907 break;
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100908 case 66: /* Ignore TFTP server name */
909 break;
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200910 case 67: /* Bootfile option */
Alexander Graf449312c2018-06-15 10:29:27 +0200911 if (!net_boot_file_name_explicit) {
912 size = truncate_sz("Bootfile",
913 sizeof(net_boot_file_name),
914 oplen);
915 memcpy(&net_boot_file_name, popt + 2, size);
916 net_boot_file_name[size] = 0;
917 }
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100918 break;
wdenk232c1502004-03-12 00:14:09 +0000919 default:
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500920#if defined(CONFIG_BOOTP_VENDOREX)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000921 if (dhcp_vendorex_proc(popt))
wdenk8bde7f72003-06-27 21:31:46 +0000922 break;
wdenk3861aa52002-09-27 23:19:37 +0000923#endif
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000924 printf("*** Unhandled DHCP Option in OFFER/ACK:"
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500925 " %d\n", *popt);
wdenk232c1502004-03-12 00:14:09 +0000926 break;
wdenk3861aa52002-09-27 23:19:37 +0000927 }
928 popt += oplen + 2; /* Process next option */
929 }
930}
931
Stefan Brüns774c3e02015-09-04 00:31:49 +0200932static void dhcp_packet_process_options(struct bootp_hdr *bp)
933{
934 uchar *popt = (uchar *)&bp->bp_vend[4];
935 uchar *end = popt + BOOTP_HDR_SIZE;
936
937 if (net_read_u32((u32 *)&bp->bp_vend[0]) != htonl(BOOTP_VENDOR_MAGIC))
938 return;
939
940 dhcp_option_overload = 0;
941
942 /*
943 * The 'options' field MUST be interpreted first, 'file' next,
944 * 'sname' last.
945 */
946 dhcp_process_options(popt, end);
947
948 if (dhcp_option_overload & OVERLOAD_FILE) {
949 popt = (uchar *)bp->bp_file;
950 end = popt + sizeof(bp->bp_file);
951 dhcp_process_options(popt, end);
952 }
953
954 if (dhcp_option_overload & OVERLOAD_SNAME) {
955 popt = (uchar *)bp->bp_sname;
956 end = popt + sizeof(bp->bp_sname);
957 dhcp_process_options(popt, end);
958 }
959}
960
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500961static int dhcp_message_type(unsigned char *popt)
wdenk3861aa52002-09-27 23:19:37 +0000962{
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500963 if (net_read_u32((u32 *)popt) != htonl(BOOTP_VENDOR_MAGIC))
wdenk3861aa52002-09-27 23:19:37 +0000964 return -1;
965
966 popt += 4;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000967 while (*popt != 0xff) {
968 if (*popt == 53) /* DHCP Message Type */
wdenk3861aa52002-09-27 23:19:37 +0000969 return *(popt + 2);
Stefan Brünsc56eb572015-08-28 10:15:54 +0200970 if (*popt == 0) {
971 /* Pad */
972 popt += 1;
973 } else {
974 /* Scan through all options */
975 popt += *(popt + 1) + 2;
976 }
wdenk3861aa52002-09-27 23:19:37 +0000977 }
978 return -1;
979}
980
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500981static void dhcp_send_request_packet(struct bootp_hdr *bp_offer)
wdenk3861aa52002-09-27 23:19:37 +0000982{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000983 uchar *pkt, *iphdr;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500984 struct bootp_hdr *bp;
wdenk3861aa52002-09-27 23:19:37 +0000985 int pktlen, iplen, extlen;
Joe Hershbergerae446f52012-05-23 07:59:10 +0000986 int eth_hdr_size;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500987 struct in_addr offered_ip;
988 struct in_addr zero_ip;
989 struct in_addr bcast_ip;
wdenk3861aa52002-09-27 23:19:37 +0000990
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500991 debug("dhcp_send_request_packet: Sending DHCPREQUEST\n");
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500992 pkt = net_tx_packet;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000993 memset((void *)pkt, 0, PKTSIZE);
wdenk3861aa52002-09-27 23:19:37 +0000994
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500995 eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP);
Joe Hershbergerae446f52012-05-23 07:59:10 +0000996 pkt += eth_hdr_size;
wdenk3861aa52002-09-27 23:19:37 +0000997
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000998 iphdr = pkt; /* We'll need this later to set proper pkt size */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000999 pkt += IP_UDP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +00001000
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001001 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +00001002 bp->bp_op = OP_BOOTREQUEST;
1003 bp->bp_htype = HWT_ETHER;
1004 bp->bp_hlen = HWL_ETHER;
1005 bp->bp_hops = 0;
Stefan Brüns454d9d32015-08-27 23:57:18 +02001006 bp->bp_secs = htons(get_timer(bootp_start) / 1000);
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001007 /* Do not set the client IP, your IP, or server IP yet, since it
1008 * hasn't been ACK'ed by the server yet */
Justin Flammiae5c794e2007-10-29 17:40:35 -04001009
Wolfgang Denkc6686702006-10-12 00:01:08 +02001010 /*
Wolfgang Denkd82718f2006-10-09 01:26:14 +02001011 * RFC3046 requires Relay Agents to discard packets with
1012 * nonzero and offered giaddr
1013 */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001014 zero_ip.s_addr = 0;
1015 net_write_ip(&bp->bp_giaddr, zero_ip);
Wolfgang Denkd82718f2006-10-09 01:26:14 +02001016
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001017 memcpy(bp->bp_chaddr, net_ethaddr, 6);
Alexandre Messierb2b7fbc2016-01-28 11:19:02 -05001018 copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file));
wdenk3861aa52002-09-27 23:19:37 +00001019
1020 /*
1021 * ID is the id of the OFFER packet
1022 */
1023
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -05001024 net_copy_u32(&bp->bp_id, &bp_offer->bp_id);
wdenk3861aa52002-09-27 23:19:37 +00001025
1026 /*
1027 * Copy options from OFFER packet if present
1028 */
Justin Flammiae5c794e2007-10-29 17:40:35 -04001029
1030 /* Copy offered IP into the parameters request list */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001031 net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr);
1032 extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST,
1033 dhcp_server_ip, offered_ip);
wdenk3861aa52002-09-27 23:19:37 +00001034
Joe Hershbergerae446f52012-05-23 07:59:10 +00001035 iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
1036 pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
Joe Hershberger049a95a2015-04-08 01:41:01 -05001037 bcast_ip.s_addr = 0xFFFFFFFFL;
1038 net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen);
wdenk3861aa52002-09-27 23:19:37 +00001039
Aras Vaichasd9a2f412008-03-26 09:43:57 +11001040#ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY
1041 udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY);
1042#endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */
Joe Hershbergerf9623222012-05-23 07:59:11 +00001043 debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen);
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001044 net_send_packet(net_tx_packet, pktlen);
wdenk3861aa52002-09-27 23:19:37 +00001045}
1046
1047/*
1048 * Handle DHCP received packets.
1049 */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001050static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
1051 unsigned src, unsigned len)
wdenk3861aa52002-09-27 23:19:37 +00001052{
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001053 struct bootp_hdr *bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +00001054
Robin Getz0ebf04c2009-07-23 03:01:03 -04001055 debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001056 src, dest, len, dhcp_state);
wdenk3861aa52002-09-27 23:19:37 +00001057
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001058 /* Filter out pkts we don't want */
Stefan Brüns867d6ae2015-08-27 23:53:26 +02001059 if (check_reply_packet(pkt, dest, src, len))
wdenk3861aa52002-09-27 23:19:37 +00001060 return;
1061
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001062 debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: "
1063 "%d\n", src, dest, len, dhcp_state);
wdenk3861aa52002-09-27 23:19:37 +00001064
Lyle Franklinc8e251f2019-08-05 06:23:42 -04001065 if (net_read_ip(&bp->bp_yiaddr).s_addr == 0) {
1066#if defined(CONFIG_SERVERIP_FROM_PROXYDHCP)
1067 store_bootp_params(bp);
1068#endif
Peng Fan44c42dd2016-01-07 15:28:23 +08001069 return;
Lyle Franklinc8e251f2019-08-05 06:23:42 -04001070 }
Peng Fan44c42dd2016-01-07 15:28:23 +08001071
wdenk3861aa52002-09-27 23:19:37 +00001072 switch (dhcp_state) {
1073 case SELECTING:
1074 /*
1075 * Wait an appropriate time for any potential DHCPOFFER packets
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001076 * to arrive. Then select one, and generate DHCPREQUEST
1077 * response. If filename is in format we recognize, assume it
1078 * is a valid OFFER from a server we want.
wdenk3861aa52002-09-27 23:19:37 +00001079 */
Robin Getz0ebf04c2009-07-23 03:01:03 -04001080 debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001081#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +00001082 if (strncmp(bp->bp_file,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001083 CONFIG_SYS_BOOTFILE_PREFIX,
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001084 strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001085#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
Stefan Brüns774c3e02015-09-04 00:31:49 +02001086 dhcp_packet_process_options(bp);
Alexander Graf0efe1bc2016-05-06 21:01:01 +02001087 efi_net_set_dhcp_ack(pkt, len);
wdenk3861aa52002-09-27 23:19:37 +00001088
Lyle Franklinc8e251f2019-08-05 06:23:42 -04001089#if defined(CONFIG_SERVERIP_FROM_PROXYDHCP)
1090 if (!net_server_ip.s_addr)
1091 udelay(CONFIG_SERVERIP_FROM_PROXYDHCP_DELAY_MS *
1092 1000);
1093#endif /* CONFIG_SERVERIP_FROM_PROXYDHCP */
1094
Robin Getz0ebf04c2009-07-23 03:01:03 -04001095 debug("TRANSITIONING TO REQUESTING STATE\n");
wdenk3861aa52002-09-27 23:19:37 +00001096 dhcp_state = REQUESTING;
stroese759a51b2003-04-10 13:26:44 +00001097
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001098 net_set_timeout_handler(5000, bootp_timeout_handler);
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001099 dhcp_send_request_packet(bp);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001100#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +00001101 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001102#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +00001103
1104 return;
1105 break;
1106 case REQUESTING:
Robin Getz0ebf04c2009-07-23 03:01:03 -04001107 debug("DHCP State: REQUESTING\n");
wdenk3861aa52002-09-27 23:19:37 +00001108
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001109 if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) {
Stefan Brüns774c3e02015-09-04 00:31:49 +02001110 dhcp_packet_process_options(bp);
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001111 /* Store net params from reply */
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001112 store_net_params(bp);
wdenk3861aa52002-09-27 23:19:37 +00001113 dhcp_state = BOUND;
Thierry Reding92ac8ac2014-08-19 10:21:24 +02001114 printf("DHCP client bound to address %pI4 (%lu ms)\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001115 &net_ip, get_timer(bootp_start));
Stefan Brüns4f28c9b2015-08-30 17:47:17 +02001116 net_set_timeout_handler(0, (thand_f *)0);
Simon Glass573f14f2011-12-10 11:08:06 +00001117 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP,
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001118 "bootp_stop");
wdenk3861aa52002-09-27 23:19:37 +00001119
Simon Glasse4a3d572011-10-27 06:24:32 +00001120 net_auto_load();
wdenk3861aa52002-09-27 23:19:37 +00001121 return;
1122 }
1123 break;
Remy Bohmer51dfe132008-08-20 11:30:28 +02001124 case BOUND:
1125 /* DHCP client bound to address */
1126 break;
wdenk3861aa52002-09-27 23:19:37 +00001127 default:
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001128 puts("DHCP: INVALID STATE\n");
wdenk3861aa52002-09-27 23:19:37 +00001129 break;
1130 }
wdenk3861aa52002-09-27 23:19:37 +00001131}
1132
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001133void dhcp_request(void)
wdenk3861aa52002-09-27 23:19:37 +00001134{
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001135 bootp_request();
wdenk3861aa52002-09-27 23:19:37 +00001136}
Wolfgang Denk992742a2007-11-03 23:09:27 +01001137#endif /* CONFIG_CMD_DHCP */