blob: 7ac0093945c13a4541c3160e1f9057a332ba7575 [file] [log] [blame]
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
Tom Rini01d1b992022-03-11 09:12:02 -050034 * counter of fixed-length timeout periods. CONFIG_NET_RETRY_COUNT represents
Stephen Warrenf59be6e2014-07-25 17:30:48 -060035 * 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 */
Tom Rini01d1b992022-03-11 09:12:02 -050042#define TIMEOUT_MS ((3 + (CONFIG_NET_RETRY_COUNT * 5)) * 1000)
wdenk3861aa52002-09-27 23:19:37 +000043
Joe Hershberger3090b7e32012-05-15 08:59:06 +000044#define PORT_BOOTPS 67 /* BOOTP server UDP port */
45#define PORT_BOOTPC 68 /* BOOTP client UDP port */
wdenk3861aa52002-09-27 23:19:37 +000046
Joe Hershberger3090b7e32012-05-15 08:59:06 +000047#ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */
wdenk232c1502004-03-12 00:14:09 +000048#define CONFIG_DHCP_MIN_EXT_LEN 64
wdenk3861aa52002-09-27 23:19:37 +000049#endif
50
Thierry Reding92ac8ac2014-08-19 10:21:24 +020051#ifndef CONFIG_BOOTP_ID_CACHE_SIZE
52#define CONFIG_BOOTP_ID_CACHE_SIZE 4
53#endif
54
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -050055u32 bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE];
Thierry Reding92ac8ac2014-08-19 10:21:24 +020056unsigned int bootp_num_ids;
Joe Hershberger7044c6b2015-04-08 01:41:09 -050057int bootp_try;
Stephen Warrenf59be6e2014-07-25 17:30:48 -060058ulong bootp_start;
59ulong bootp_timeout;
Joe Hershberger586cbe52015-04-08 01:41:03 -050060char net_nis_domain[32] = {0,}; /* Our NIS domain */
61char net_hostname[32] = {0,}; /* Our hostname */
Andre Kalb5e6e41b2022-01-28 09:40:32 +010062char net_root_path[CONFIG_BOOTP_MAX_ROOT_PATH_LEN] = {0,}; /* Our bootpath */
wdenk3861aa52002-09-27 23:19:37 +000063
Alexandre Messier50768f52016-02-01 17:08:57 -050064static ulong time_taken_max;
65
Jon Loeliger643d1ab2007-07-09 17:45:14 -050066#if defined(CONFIG_CMD_DHCP)
Kim Phillips06370592012-10-29 13:34:33 +000067static dhcp_state_t dhcp_state = INIT;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -050068static u32 dhcp_leasetime;
Joe Hershberger049a95a2015-04-08 01:41:01 -050069static struct in_addr dhcp_server_ip;
Stefan Brünsec87b1b2015-09-04 00:31:48 +020070static u8 dhcp_option_overload;
71#define OVERLOAD_FILE 1
72#define OVERLOAD_SNAME 2
Joe Hershberger049a95a2015-04-08 01:41:01 -050073static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
74 unsigned src, unsigned len);
wdenk3861aa52002-09-27 23:19:37 +000075
76/* For Debug */
wdenk3e386912003-04-05 00:53:31 +000077#if 0
78static char *dhcpmsg2str(int type)
wdenk3861aa52002-09-27 23:19:37 +000079{
80 switch (type) {
wdenk232c1502004-03-12 00:14:09 +000081 case 1: return "DHCPDISCOVER"; break;
82 case 2: return "DHCPOFFER"; break;
83 case 3: return "DHCPREQUEST"; break;
84 case 4: return "DHCPDECLINE"; break;
85 case 5: return "DHCPACK"; break;
86 case 6: return "DHCPNACK"; break;
87 case 7: return "DHCPRELEASE"; break;
wdenk3861aa52002-09-27 23:19:37 +000088 default: return "UNKNOWN/INVALID MSG TYPE"; break;
89 }
90}
wdenk3e386912003-04-05 00:53:31 +000091#endif
Jon Loeliger610f2e92007-07-10 11:05:02 -050092#endif
wdenk3861aa52002-09-27 23:19:37 +000093
Thierry Reding92ac8ac2014-08-19 10:21:24 +020094static void bootp_add_id(ulong id)
95{
96 if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) {
97 size_t size = sizeof(bootp_ids) - sizeof(id);
98
99 memmove(bootp_ids, &bootp_ids[1], size);
100 bootp_ids[bootp_num_ids - 1] = id;
101 } else {
102 bootp_ids[bootp_num_ids] = id;
103 bootp_num_ids++;
104 }
105}
106
107static bool bootp_match_id(ulong id)
108{
109 unsigned int i;
110
111 for (i = 0; i < bootp_num_ids; i++)
112 if (bootp_ids[i] == id)
113 return true;
114
115 return false;
116}
117
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200118static int check_reply_packet(uchar *pkt, unsigned dest, unsigned src,
119 unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000120{
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500121 struct bootp_hdr *bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000122 int retval = 0;
123
124 if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
125 retval = -1;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500126 else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE)
wdenk3861aa52002-09-27 23:19:37 +0000127 retval = -2;
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200128 else if (bp->bp_op != OP_BOOTREPLY)
wdenk3861aa52002-09-27 23:19:37 +0000129 retval = -3;
wdenk3861aa52002-09-27 23:19:37 +0000130 else if (bp->bp_htype != HWT_ETHER)
131 retval = -4;
132 else if (bp->bp_hlen != HWL_ETHER)
133 retval = -5;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500134 else if (!bootp_match_id(net_read_u32(&bp->bp_id)))
wdenk3861aa52002-09-27 23:19:37 +0000135 retval = -6;
Anton Persson214cc902016-03-17 09:38:21 +0100136 else if (memcmp(bp->bp_chaddr, net_ethaddr, HWL_ETHER) != 0)
137 retval = -7;
wdenk3861aa52002-09-27 23:19:37 +0000138
Robin Getz0ebf04c2009-07-23 03:01:03 -0400139 debug("Filtering pkt = %d\n", retval);
wdenk3861aa52002-09-27 23:19:37 +0000140
141 return retval;
142}
143
Lyle Franklinc8e251f2019-08-05 06:23:42 -0400144static void store_bootp_params(struct bootp_hdr *bp)
wdenk3861aa52002-09-27 23:19:37 +0000145{
Joe Hershberger049a95a2015-04-08 01:41:01 -0500146 struct in_addr tmp_ip;
Alexander Grafbdce3402018-06-15 10:29:28 +0200147 bool overwrite_serverip = true;
148
Simon Glass43407532021-12-18 11:27:52 -0700149 if (IS_ENABLED(CONFIG_BOOTP_SERVERIP))
150 return;
151
Alexander Grafbdce3402018-06-15 10:29:28 +0200152#if defined(CONFIG_BOOTP_PREFER_SERVERIP)
153 overwrite_serverip = false;
154#endif
Joe Hershberger1752f0f2012-05-23 07:59:18 +0000155
Joe Hershberger049a95a2015-04-08 01:41:01 -0500156 net_copy_ip(&tmp_ip, &bp->bp_siaddr);
Alexander Grafbdce3402018-06-15 10:29:28 +0200157 if (tmp_ip.s_addr != 0 && (overwrite_serverip || !net_server_ip.s_addr))
Joe Hershberger049a95a2015-04-08 01:41:01 -0500158 net_copy_ip(&net_server_ip, &bp->bp_siaddr);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500159 memcpy(net_server_ethaddr,
160 ((struct ethernet_hdr *)net_rx_packet)->et_src, 6);
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200161 if (
162#if defined(CONFIG_CMD_DHCP)
163 !(dhcp_option_overload & OVERLOAD_FILE) &&
164#endif
Alexander Graf449312c2018-06-15 10:29:27 +0200165 (strlen(bp->bp_file) > 0) &&
166 !net_boot_file_name_explicit) {
Joe Hershberger14111572015-04-08 01:41:02 -0500167 copy_filename(net_boot_file_name, bp->bp_file,
168 sizeof(net_boot_file_name));
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200169 }
wdenk3861aa52002-09-27 23:19:37 +0000170
Joe Hershberger14111572015-04-08 01:41:02 -0500171 debug("net_boot_file_name: %s\n", net_boot_file_name);
wdenk3861aa52002-09-27 23:19:37 +0000172
173 /* Propagate to environment:
wdenk8bde7f72003-06-27 21:31:46 +0000174 * don't delete exising entry when BOOTP / DHCP reply does
wdenk3861aa52002-09-27 23:19:37 +0000175 * not contain a new value
176 */
Joe Hershberger14111572015-04-08 01:41:02 -0500177 if (*net_boot_file_name)
Simon Glass382bee52017-08-03 12:22:09 -0600178 env_set("bootfile", net_boot_file_name);
Lyle Franklinc8e251f2019-08-05 06:23:42 -0400179}
180
181/*
182 * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
183 */
184static void store_net_params(struct bootp_hdr *bp)
185{
186#if !defined(CONFIG_SERVERIP_FROM_PROXYDHCP)
187 store_bootp_params(bp);
188#endif
Joe Hershberger049a95a2015-04-08 01:41:01 -0500189 net_copy_ip(&net_ip, &bp->bp_yiaddr);
wdenk3861aa52002-09-27 23:19:37 +0000190}
191
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000192static int truncate_sz(const char *name, int maxlen, int curlen)
wdenk3861aa52002-09-27 23:19:37 +0000193{
194 if (curlen >= maxlen) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000195 printf("*** WARNING: %s is too long (%d - max: %d)"
196 " - truncated\n", name, curlen, maxlen);
wdenk3861aa52002-09-27 23:19:37 +0000197 curlen = maxlen - 1;
198 }
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000199 return curlen;
wdenk3861aa52002-09-27 23:19:37 +0000200}
201
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500202#if !defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000203
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500204static void bootp_process_vendor_field(u8 *ext)
wdenk3861aa52002-09-27 23:19:37 +0000205{
wdenk232c1502004-03-12 00:14:09 +0000206 int size = *(ext + 1);
wdenk3861aa52002-09-27 23:19:37 +0000207
Robin Getz0ebf04c2009-07-23 03:01:03 -0400208 debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext,
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500209 *(ext + 1));
wdenk3861aa52002-09-27 23:19:37 +0000210
Joe Hershberger14111572015-04-08 01:41:02 -0500211 net_boot_file_expected_size_in_blocks = 0;
wdenk3861aa52002-09-27 23:19:37 +0000212
wdenk232c1502004-03-12 00:14:09 +0000213 switch (*ext) {
214 /* Fixed length fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000215 case 1: /* Subnet mask */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500216 if (net_netmask.s_addr == 0)
217 net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000218 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000219 case 2: /* Time offset - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000220 break;
wdenk232c1502004-03-12 00:14:09 +0000221 /* Variable length fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000222 case 3: /* Gateways list */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500223 if (net_gateway.s_addr == 0)
224 net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000225 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000226 case 4: /* Time server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000227 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000228 case 5: /* IEN-116 name server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000229 break;
230 case 6:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500231 if (net_dns_server.s_addr == 0)
232 net_copy_ip(&net_dns_server,
233 (struct in_addr *)(ext + 2));
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500234#if defined(CONFIG_BOOTP_DNS2)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500235 if ((net_dns_server2.s_addr == 0) && (size > 4))
236 net_copy_ip(&net_dns_server2,
237 (struct in_addr *)(ext + 2 + 4));
stroesefe389a82003-08-28 14:17:32 +0000238#endif
wdenk3861aa52002-09-27 23:19:37 +0000239 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000240 case 7: /* Log server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000241 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000242 case 8: /* Cookie/Quote server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000243 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000244 case 9: /* LPR server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000245 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000246 case 10: /* Impress server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000247 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000248 case 11: /* RPL server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000249 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000250 case 12: /* Host name */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500251 if (net_hostname[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000252 size = truncate_sz("Host Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500253 sizeof(net_hostname), size);
254 memcpy(&net_hostname, ext + 2, size);
255 net_hostname[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000256 }
257 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000258 case 13: /* Boot file size */
wdenk3861aa52002-09-27 23:19:37 +0000259 if (size == 2)
Joe Hershberger14111572015-04-08 01:41:02 -0500260 net_boot_file_expected_size_in_blocks =
261 ntohs(*(ushort *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000262 else if (size == 4)
Joe Hershberger14111572015-04-08 01:41:02 -0500263 net_boot_file_expected_size_in_blocks =
264 ntohl(*(ulong *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000265 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000266 case 14: /* Merit dump file - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000267 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000268 case 15: /* Domain name - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000269 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000270 case 16: /* Swap server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000271 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000272 case 17: /* Root path */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500273 if (net_root_path[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000274 size = truncate_sz("Root Path",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500275 sizeof(net_root_path), size);
276 memcpy(&net_root_path, ext + 2, size);
277 net_root_path[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000278 }
279 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000280 case 18: /* Extension path - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000281 /*
wdenk8bde7f72003-06-27 21:31:46 +0000282 * This can be used to send the information of the
283 * vendor area in another file that the client can
284 * access via TFTP.
wdenk3861aa52002-09-27 23:19:37 +0000285 */
286 break;
wdenk232c1502004-03-12 00:14:09 +0000287 /* IP host layer fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000288 case 40: /* NIS Domain name */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500289 if (net_nis_domain[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000290 size = truncate_sz("NIS Domain Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500291 sizeof(net_nis_domain), size);
292 memcpy(&net_nis_domain, ext + 2, size);
293 net_nis_domain[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000294 }
295 break;
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000296#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
297 case 42: /* NTP server IP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500298 net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2));
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000299 break;
300#endif
wdenk232c1502004-03-12 00:14:09 +0000301 /* Application layer fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000302 case 43: /* Vendor specific info - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000303 /*
wdenk8bde7f72003-06-27 21:31:46 +0000304 * Binary information to exchange specific
305 * product information.
wdenk3861aa52002-09-27 23:19:37 +0000306 */
307 break;
wdenk232c1502004-03-12 00:14:09 +0000308 /* Reserved (custom) fields (128..254) */
309 }
wdenk3861aa52002-09-27 23:19:37 +0000310}
311
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500312static void bootp_process_vendor(u8 *ext, int size)
wdenk3861aa52002-09-27 23:19:37 +0000313{
wdenk232c1502004-03-12 00:14:09 +0000314 u8 *end = ext + size;
wdenk3861aa52002-09-27 23:19:37 +0000315
Robin Getz0ebf04c2009-07-23 03:01:03 -0400316 debug("[BOOTP] Checking extension (%d bytes)...\n", size);
wdenk3861aa52002-09-27 23:19:37 +0000317
wdenk232c1502004-03-12 00:14:09 +0000318 while ((ext < end) && (*ext != 0xff)) {
319 if (*ext == 0) {
320 ext++;
321 } else {
322 u8 *opt = ext;
323
324 ext += ext[1] + 2;
325 if (ext <= end)
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500326 bootp_process_vendor_field(opt);
wdenk232c1502004-03-12 00:14:09 +0000327 }
wdenk3861aa52002-09-27 23:19:37 +0000328 }
wdenk3861aa52002-09-27 23:19:37 +0000329
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000330 debug("[BOOTP] Received fields:\n");
Joe Hershberger049a95a2015-04-08 01:41:01 -0500331 if (net_netmask.s_addr)
332 debug("net_netmask : %pI4\n", &net_netmask);
wdenk3861aa52002-09-27 23:19:37 +0000333
Joe Hershberger049a95a2015-04-08 01:41:01 -0500334 if (net_gateway.s_addr)
335 debug("net_gateway : %pI4", &net_gateway);
wdenk3861aa52002-09-27 23:19:37 +0000336
Joe Hershberger14111572015-04-08 01:41:02 -0500337 if (net_boot_file_expected_size_in_blocks)
338 debug("net_boot_file_expected_size_in_blocks : %d\n",
339 net_boot_file_expected_size_in_blocks);
wdenk3861aa52002-09-27 23:19:37 +0000340
Joe Hershberger586cbe52015-04-08 01:41:03 -0500341 if (net_hostname[0])
342 debug("net_hostname : %s\n", net_hostname);
wdenk3861aa52002-09-27 23:19:37 +0000343
Joe Hershberger586cbe52015-04-08 01:41:03 -0500344 if (net_root_path[0])
345 debug("net_root_path : %s\n", net_root_path);
wdenk3861aa52002-09-27 23:19:37 +0000346
Joe Hershberger586cbe52015-04-08 01:41:03 -0500347 if (net_nis_domain[0])
348 debug("net_nis_domain : %s\n", net_nis_domain);
wdenk3861aa52002-09-27 23:19:37 +0000349
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000350#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
Chris Packham4b4dc522018-05-03 20:19:03 +1200351 if (net_ntp_server.s_addr)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500352 debug("net_ntp_server : %pI4\n", &net_ntp_server);
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000353#endif
wdenk3861aa52002-09-27 23:19:37 +0000354}
Simon Glass09349862011-06-13 16:13:12 -0700355
wdenk3861aa52002-09-27 23:19:37 +0000356/*
357 * Handle a BOOTP received packet.
358 */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500359static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
360 unsigned src, unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000361{
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500362 struct bootp_hdr *bp;
wdenk3861aa52002-09-27 23:19:37 +0000363
Robin Getz0ebf04c2009-07-23 03:01:03 -0400364 debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500365 src, dest, len, sizeof(struct bootp_hdr));
wdenk3861aa52002-09-27 23:19:37 +0000366
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500367 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000368
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000369 /* Filter out pkts we don't want */
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200370 if (check_reply_packet(pkt, dest, src, len))
wdenk3861aa52002-09-27 23:19:37 +0000371 return;
372
373 /*
wdenk232c1502004-03-12 00:14:09 +0000374 * Got a good BOOTP reply. Copy the data into our variables.
wdenk3861aa52002-09-27 23:19:37 +0000375 */
Uri Mashiach2d8d1902017-01-19 10:51:45 +0200376#if defined(CONFIG_LED_STATUS) && defined(CONFIG_LED_STATUS_BOOT_ENABLE)
377 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_OFF);
wdenk3861aa52002-09-27 23:19:37 +0000378#endif
379
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500380 store_net_params(bp); /* Store net parameters from reply */
wdenk3861aa52002-09-27 23:19:37 +0000381
382 /* Retrieve extended information (we must parse the vendor area) */
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500383 if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500384 bootp_process_vendor((uchar *)&bp->bp_vend[4], len);
wdenk3861aa52002-09-27 23:19:37 +0000385
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500386 net_set_timeout_handler(0, (thand_f *)0);
Simon Glass573f14f2011-12-10 11:08:06 +0000387 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop");
wdenk3861aa52002-09-27 23:19:37 +0000388
Robin Getz0ebf04c2009-07-23 03:01:03 -0400389 debug("Got good BOOTP\n");
wdenk3861aa52002-09-27 23:19:37 +0000390
Simon Glasse4a3d572011-10-27 06:24:32 +0000391 net_auto_load();
wdenk3861aa52002-09-27 23:19:37 +0000392}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500393#endif
wdenk3861aa52002-09-27 23:19:37 +0000394
395/*
396 * Timeout on BOOTP/DHCP request.
397 */
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500398static void bootp_timeout_handler(void)
wdenk3861aa52002-09-27 23:19:37 +0000399{
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600400 ulong time_taken = get_timer(bootp_start);
401
Alexandre Messier50768f52016-02-01 17:08:57 -0500402 if (time_taken >= time_taken_max) {
Joe Hershberger2c00e092012-05-23 07:59:19 +0000403#ifdef CONFIG_BOOTP_MAY_FAIL
Joe Hershberger2099b9f2017-11-07 18:13:40 -0800404 char *ethrotate;
405
406 ethrotate = env_get("ethrotate");
407 if ((ethrotate && strcmp(ethrotate, "no") == 0) ||
408 net_restart_wrap) {
409 puts("\nRetry time exceeded\n");
410 net_set_state(NETLOOP_FAIL);
411 } else
Joe Hershberger2c00e092012-05-23 07:59:19 +0000412#endif
Joe Hershberger2099b9f2017-11-07 18:13:40 -0800413 {
414 puts("\nRetry time exceeded; starting again\n");
415 net_start_again();
416 }
wdenk3861aa52002-09-27 23:19:37 +0000417 } else {
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600418 bootp_timeout *= 2;
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200419 if (bootp_timeout > 2000)
420 bootp_timeout = 2000;
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500421 net_set_timeout_handler(bootp_timeout, bootp_timeout_handler);
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500422 bootp_request();
wdenk3861aa52002-09-27 23:19:37 +0000423 }
424}
425
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000426#define put_vci(e, str) \
427 do { \
428 size_t vci_strlen = strlen(str); \
429 *e++ = 60; /* Vendor Class Identifier */ \
430 *e++ = vci_strlen; \
431 memcpy(e, str, vci_strlen); \
432 e += vci_strlen; \
433 } while (0)
434
Alexander Graf4570a992016-05-06 21:01:02 +0200435static u8 *add_vci(u8 *e)
436{
Alexander Graf20898ea2016-05-06 21:01:07 +0200437 char *vci = NULL;
Simon Glass00caae62017-08-03 12:22:12 -0600438 char *env_vci = env_get("bootp_vci");
Alexander Graf20898ea2016-05-06 21:01:07 +0200439
Alexander Graf4570a992016-05-06 21:01:02 +0200440#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING)
Alexander Graf20898ea2016-05-06 21:01:07 +0200441 vci = CONFIG_SPL_NET_VCI_STRING;
Alexander Graf4570a992016-05-06 21:01:02 +0200442#elif defined(CONFIG_BOOTP_VCI_STRING)
Alexander Graf20898ea2016-05-06 21:01:07 +0200443 vci = CONFIG_BOOTP_VCI_STRING;
Alexander Graf4570a992016-05-06 21:01:02 +0200444#endif
445
Alexander Graf20898ea2016-05-06 21:01:07 +0200446 if (env_vci)
447 vci = env_vci;
448
449 if (vci)
450 put_vci(e, vci);
451
Alexander Graf4570a992016-05-06 21:01:02 +0200452 return e;
453}
454
wdenk3861aa52002-09-27 23:19:37 +0000455/*
456 * Initialize BOOTP extension fields in the request.
457 */
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500458#if defined(CONFIG_CMD_DHCP)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500459static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip,
460 struct in_addr requested_ip)
wdenk3861aa52002-09-27 23:19:37 +0000461{
wdenk232c1502004-03-12 00:14:09 +0000462 u8 *start = e;
463 u8 *cnt;
Alexander Grafbc6fc282016-05-12 15:51:45 +0200464#ifdef CONFIG_LIB_UUID
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000465 char *uuid;
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000466#endif
Alexander Grafbc6fc282016-05-12 15:51:45 +0200467 int clientarch = -1;
wdenk232c1502004-03-12 00:14:09 +0000468
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500469#if defined(CONFIG_BOOTP_VENDOREX)
wdenk232c1502004-03-12 00:14:09 +0000470 u8 *x;
wdenk3861aa52002-09-27 23:19:37 +0000471#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500472#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200473 char *hostname;
stroesefe389a82003-08-28 14:17:32 +0000474#endif
wdenk3861aa52002-09-27 23:19:37 +0000475
wdenk232c1502004-03-12 00:14:09 +0000476 *e++ = 99; /* RFC1048 Magic Cookie */
477 *e++ = 130;
478 *e++ = 83;
479 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000480
wdenk232c1502004-03-12 00:14:09 +0000481 *e++ = 53; /* DHCP Message Type */
482 *e++ = 1;
483 *e++ = message_type;
wdenk3861aa52002-09-27 23:19:37 +0000484
wdenk232c1502004-03-12 00:14:09 +0000485 *e++ = 57; /* Maximum DHCP Message Size */
486 *e++ = 2;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000487 *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8;
488 *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
wdenk3861aa52002-09-27 23:19:37 +0000489
Joe Hershberger049a95a2015-04-08 01:41:01 -0500490 if (server_ip.s_addr) {
491 int tmp = ntohl(server_ip.s_addr);
wdenk3861aa52002-09-27 23:19:37 +0000492
wdenk232c1502004-03-12 00:14:09 +0000493 *e++ = 54; /* ServerID */
494 *e++ = 4;
495 *e++ = tmp >> 24;
496 *e++ = tmp >> 16;
497 *e++ = tmp >> 8;
498 *e++ = tmp & 0xff;
499 }
wdenk3861aa52002-09-27 23:19:37 +0000500
Joe Hershberger049a95a2015-04-08 01:41:01 -0500501 if (requested_ip.s_addr) {
502 int tmp = ntohl(requested_ip.s_addr);
wdenk3861aa52002-09-27 23:19:37 +0000503
wdenk232c1502004-03-12 00:14:09 +0000504 *e++ = 50; /* Requested IP */
505 *e++ = 4;
506 *e++ = tmp >> 24;
507 *e++ = tmp >> 16;
508 *e++ = tmp >> 8;
509 *e++ = tmp & 0xff;
510 }
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500511#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Simon Glass00caae62017-08-03 12:22:12 -0600512 hostname = env_get("hostname");
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000513 if (hostname) {
514 int hostnamelen = strlen(hostname);
wdenk232c1502004-03-12 00:14:09 +0000515
516 *e++ = 12; /* Hostname */
517 *e++ = hostnamelen;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000518 memcpy(e, hostname, hostnamelen);
wdenk232c1502004-03-12 00:14:09 +0000519 e += hostnamelen;
520 }
stroesefe389a82003-08-28 14:17:32 +0000521#endif
522
Alexander Grafbc6fc282016-05-12 15:51:45 +0200523#ifdef CONFIG_BOOTP_PXE_CLIENTARCH
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000524 clientarch = CONFIG_BOOTP_PXE_CLIENTARCH;
Alexander Grafbc6fc282016-05-12 15:51:45 +0200525#endif
526
Simon Glass00caae62017-08-03 12:22:12 -0600527 if (env_get("bootp_arch"))
Simon Glassbfebc8c2017-08-03 12:22:13 -0600528 clientarch = env_get_ulong("bootp_arch", 16, clientarch);
Alexander Grafbc6fc282016-05-12 15:51:45 +0200529
530 if (clientarch > 0) {
531 *e++ = 93; /* Client System Architecture */
532 *e++ = 2;
533 *e++ = (clientarch >> 8) & 0xff;
534 *e++ = clientarch & 0xff;
535 }
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000536
537 *e++ = 94; /* Client Network Interface Identifier */
538 *e++ = 3;
539 *e++ = 1; /* type field for UNDI */
540 *e++ = 0; /* major revision */
541 *e++ = 0; /* minor revision */
542
Alexander Grafbc6fc282016-05-12 15:51:45 +0200543#ifdef CONFIG_LIB_UUID
Simon Glass00caae62017-08-03 12:22:12 -0600544 uuid = env_get("pxeuuid");
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000545
546 if (uuid) {
547 if (uuid_str_valid(uuid)) {
548 *e++ = 97; /* Client Machine Identifier */
549 *e++ = 17;
550 *e++ = 0; /* type 0 - UUID */
551
Przemyslaw Marczakd718ded2014-04-02 10:20:03 +0200552 uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD);
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000553 e += 16;
554 } else {
555 printf("Invalid pxeuuid: %s\n", uuid);
556 }
557 }
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000558#endif
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000559
Alexander Graf4570a992016-05-06 21:01:02 +0200560 e = add_vci(e);
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000561
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500562#if defined(CONFIG_BOOTP_VENDOREX)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000563 x = dhcp_vendorex_prep(e);
564 if (x)
wdenk232c1502004-03-12 00:14:09 +0000565 return x - start;
wdenk3861aa52002-09-27 23:19:37 +0000566#endif
567
wdenk232c1502004-03-12 00:14:09 +0000568 *e++ = 55; /* Parameter Request List */
569 cnt = e++; /* Pointer to count of requested items */
570 *cnt = 0;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500571#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk232c1502004-03-12 00:14:09 +0000572 *e++ = 1; /* Subnet Mask */
573 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000574#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500575#if defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkea287de2005-04-01 00:25:43 +0000576 *e++ = 2;
577 *cnt += 1;
578#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500579#if defined(CONFIG_BOOTP_GATEWAY)
wdenk232c1502004-03-12 00:14:09 +0000580 *e++ = 3; /* Router Option */
581 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000582#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500583#if defined(CONFIG_BOOTP_DNS)
wdenk232c1502004-03-12 00:14:09 +0000584 *e++ = 6; /* DNS Server(s) */
585 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000586#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500587#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk232c1502004-03-12 00:14:09 +0000588 *e++ = 12; /* Hostname */
589 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000590#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500591#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk232c1502004-03-12 00:14:09 +0000592 *e++ = 13; /* Boot File Size */
593 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000594#endif
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 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000598#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500599#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk232c1502004-03-12 00:14:09 +0000600 *e++ = 40; /* NIS Domain name request */
601 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000602#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500603#if defined(CONFIG_BOOTP_NTPSERVER)
wdenkea287de2005-04-01 00:25:43 +0000604 *e++ = 42;
605 *cnt += 1;
606#endif
Jason Liu258ccd62010-11-14 12:23:09 +0800607 /* no options, so back up to avoid sending an empty request list */
608 if (*cnt == 0)
609 e -= 2;
610
wdenk232c1502004-03-12 00:14:09 +0000611 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000612
wdenk232c1502004-03-12 00:14:09 +0000613 /* Pad to minimal length */
wdenk3861aa52002-09-27 23:19:37 +0000614#ifdef CONFIG_DHCP_MIN_EXT_LEN
Simon Glass21076f62011-02-02 15:03:28 -0800615 while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN)
wdenk232c1502004-03-12 00:14:09 +0000616 *e++ = 0;
wdenk3861aa52002-09-27 23:19:37 +0000617#endif
618
wdenk232c1502004-03-12 00:14:09 +0000619 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000620}
621
Jon Loeliger610f2e92007-07-10 11:05:02 -0500622#else
wdenk3861aa52002-09-27 23:19:37 +0000623/*
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000624 * Warning: no field size check - change CONFIG_BOOTP_* at your own risk!
wdenk3861aa52002-09-27 23:19:37 +0000625 */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500626static int bootp_extended(u8 *e)
wdenk3861aa52002-09-27 23:19:37 +0000627{
wdenk232c1502004-03-12 00:14:09 +0000628 u8 *start = e;
wdenk3861aa52002-09-27 23:19:37 +0000629
wdenk232c1502004-03-12 00:14:09 +0000630 *e++ = 99; /* RFC1048 Magic Cookie */
631 *e++ = 130;
632 *e++ = 83;
633 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000634
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500635#if defined(CONFIG_CMD_DHCP)
wdenk232c1502004-03-12 00:14:09 +0000636 *e++ = 53; /* DHCP Message Type */
637 *e++ = 1;
638 *e++ = DHCP_DISCOVER;
wdenk3861aa52002-09-27 23:19:37 +0000639
wdenk232c1502004-03-12 00:14:09 +0000640 *e++ = 57; /* Maximum DHCP Message Size */
641 *e++ = 2;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000642 *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16;
643 *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
Jon Loeliger610f2e92007-07-10 11:05:02 -0500644#endif
wdenk3861aa52002-09-27 23:19:37 +0000645
Walter Stolld4a660a2021-10-12 11:01:59 +0000646 e = add_vci(e);
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000647
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500648#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk232c1502004-03-12 00:14:09 +0000649 *e++ = 1; /* Subnet mask request */
650 *e++ = 4;
651 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000652#endif
653
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500654#if defined(CONFIG_BOOTP_GATEWAY)
wdenk232c1502004-03-12 00:14:09 +0000655 *e++ = 3; /* Default gateway request */
656 *e++ = 4;
657 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000658#endif
659
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500660#if defined(CONFIG_BOOTP_DNS)
wdenk232c1502004-03-12 00:14:09 +0000661 *e++ = 6; /* Domain Name Server */
662 *e++ = 4;
663 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000664#endif
665
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500666#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk232c1502004-03-12 00:14:09 +0000667 *e++ = 12; /* Host name request */
668 *e++ = 32;
669 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000670#endif
671
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500672#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk232c1502004-03-12 00:14:09 +0000673 *e++ = 13; /* Boot file size */
674 *e++ = 2;
675 e += 2;
wdenk3861aa52002-09-27 23:19:37 +0000676#endif
677
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500678#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk232c1502004-03-12 00:14:09 +0000679 *e++ = 17; /* Boot path */
680 *e++ = 32;
681 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000682#endif
683
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500684#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk232c1502004-03-12 00:14:09 +0000685 *e++ = 40; /* NIS Domain name request */
686 *e++ = 32;
687 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000688#endif
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000689#if defined(CONFIG_BOOTP_NTPSERVER)
690 *e++ = 42;
691 *e++ = 4;
692 e += 4;
693#endif
wdenk3861aa52002-09-27 23:19:37 +0000694
wdenk232c1502004-03-12 00:14:09 +0000695 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000696
Andre Renaud166c4092016-05-05 07:28:08 -0600697 /*
698 * If nothing in list, remove it altogether. Some DHCP servers get
699 * upset by this minor faux pas and do not respond at all.
700 */
701 if (e == start + 3) {
702 printf("*** Warning: no DHCP options requested\n");
703 e -= 3;
704 }
705
wdenk232c1502004-03-12 00:14:09 +0000706 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000707}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500708#endif
wdenk3861aa52002-09-27 23:19:37 +0000709
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500710void bootp_reset(void)
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600711{
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200712 bootp_num_ids = 0;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500713 bootp_try = 0;
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600714 bootp_start = get_timer(0);
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200715 bootp_timeout = 250;
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600716}
717
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500718void bootp_request(void)
wdenk3861aa52002-09-27 23:19:37 +0000719{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000720 uchar *pkt, *iphdr;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500721 struct bootp_hdr *bp;
Joe Hershbergerae446f52012-05-23 07:59:10 +0000722 int extlen, pktlen, iplen;
723 int eth_hdr_size;
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000724#ifdef CONFIG_BOOTP_RANDOM_DELAY
Pavel Machek8e8d73b2014-07-11 11:39:37 +0200725 ulong rand_ms;
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000726#endif
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500727 u32 bootp_id;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500728 struct in_addr zero_ip;
729 struct in_addr bcast_ip;
Alexandre Messier50768f52016-02-01 17:08:57 -0500730 char *ep; /* Environment pointer */
wdenk3861aa52002-09-27 23:19:37 +0000731
Simon Glass573f14f2011-12-10 11:08:06 +0000732 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start");
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500733#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000734 dhcp_state = INIT;
735#endif
736
Simon Glass00caae62017-08-03 12:22:12 -0600737 ep = env_get("bootpretryperiod");
Alexandre Messier50768f52016-02-01 17:08:57 -0500738 if (ep != NULL)
Simon Glass0b1284e2021-07-24 09:03:30 -0600739 time_taken_max = dectoul(ep, NULL);
Alexandre Messier50768f52016-02-01 17:08:57 -0500740 else
741 time_taken_max = TIMEOUT_MS;
742
wdenk3861aa52002-09-27 23:19:37 +0000743#ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500744 if (bootp_try == 0)
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000745 srand_mac();
wdenk3861aa52002-09-27 23:19:37 +0000746
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500747 if (bootp_try <= 2) /* Start with max 1024 * 1ms */
748 rand_ms = rand() >> (22 - bootp_try);
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000749 else /* After 3rd BOOTP request max 8192 * 1ms */
750 rand_ms = rand() >> 19;
wdenk3861aa52002-09-27 23:19:37 +0000751
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000752 printf("Random delay: %ld ms...\n", rand_ms);
Pavel Machek8e8d73b2014-07-11 11:39:37 +0200753 mdelay(rand_ms);
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000754
wdenk3861aa52002-09-27 23:19:37 +0000755#endif /* CONFIG_BOOTP_RANDOM_DELAY */
756
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500757 printf("BOOTP broadcast %d\n", ++bootp_try);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500758 pkt = net_tx_packet;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000759 memset((void *)pkt, 0, PKTSIZE);
wdenk3861aa52002-09-27 23:19:37 +0000760
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500761 eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP);
Joe Hershbergerae446f52012-05-23 07:59:10 +0000762 pkt += eth_hdr_size;
wdenk3861aa52002-09-27 23:19:37 +0000763
764 /*
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000765 * Next line results in incorrect packet size being transmitted,
766 * resulting in errors in some DHCP servers, reporting missing bytes.
767 * Size must be set in packet header after extension length has been
768 * determined.
wdenk3861aa52002-09-27 23:19:37 +0000769 * C. Hallinan, DS4.COM, Inc.
770 */
Joe Hershberger4b11c912012-05-23 07:59:07 +0000771 /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC,
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500772 sizeof (struct bootp_hdr)); */
Joe Hershberger4b11c912012-05-23 07:59:07 +0000773 iphdr = pkt; /* We need this later for net_set_udp_header() */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000774 pkt += IP_UDP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000775
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500776 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000777 bp->bp_op = OP_BOOTREQUEST;
778 bp->bp_htype = HWT_ETHER;
779 bp->bp_hlen = HWL_ETHER;
780 bp->bp_hops = 0;
Stefan Brüns454d9d32015-08-27 23:57:18 +0200781 /*
782 * according to RFC1542, should be 0 on first request, secs since
783 * first request otherwise
784 */
785 bp->bp_secs = htons(get_timer(bootp_start) / 1000);
Joe Hershberger049a95a2015-04-08 01:41:01 -0500786 zero_ip.s_addr = 0;
787 net_write_ip(&bp->bp_ciaddr, zero_ip);
788 net_write_ip(&bp->bp_yiaddr, zero_ip);
789 net_write_ip(&bp->bp_siaddr, zero_ip);
790 net_write_ip(&bp->bp_giaddr, zero_ip);
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500791 memcpy(bp->bp_chaddr, net_ethaddr, 6);
Joe Hershberger14111572015-04-08 01:41:02 -0500792 copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file));
wdenk3861aa52002-09-27 23:19:37 +0000793
794 /* Request additional information from the BOOTP/DHCP server */
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500795#if defined(CONFIG_CMD_DHCP)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500796 extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip,
797 zero_ip);
wdenk3861aa52002-09-27 23:19:37 +0000798#else
Joe Hershberger049a95a2015-04-08 01:41:01 -0500799 extlen = bootp_extended((u8 *)bp->bp_vend);
Jon Loeliger610f2e92007-07-10 11:05:02 -0500800#endif
wdenk3861aa52002-09-27 23:19:37 +0000801
802 /*
803 * Bootp ID is the lower 4 bytes of our ethernet address
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200804 * plus the current time in ms.
wdenk3861aa52002-09-27 23:19:37 +0000805 */
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500806 bootp_id = ((u32)net_ethaddr[2] << 24)
807 | ((u32)net_ethaddr[3] << 16)
808 | ((u32)net_ethaddr[4] << 8)
809 | (u32)net_ethaddr[5];
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500810 bootp_id += get_timer(0);
811 bootp_id = htonl(bootp_id);
812 bootp_add_id(bootp_id);
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500813 net_copy_u32(&bp->bp_id, &bootp_id);
wdenk3861aa52002-09-27 23:19:37 +0000814
815 /*
816 * Calculate proper packet lengths taking into account the
817 * variable size of the options field
818 */
Joe Hershbergerae446f52012-05-23 07:59:10 +0000819 iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
820 pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500821 bcast_ip.s_addr = 0xFFFFFFFFL;
822 net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500823 net_set_timeout_handler(bootp_timeout, bootp_timeout_handler);
wdenk3861aa52002-09-27 23:19:37 +0000824
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500825#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000826 dhcp_state = SELECTING;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500827 net_set_udp_handler(dhcp_handler);
wdenk3861aa52002-09-27 23:19:37 +0000828#else
Joe Hershberger049a95a2015-04-08 01:41:01 -0500829 net_set_udp_handler(bootp_handler);
Jon Loeliger610f2e92007-07-10 11:05:02 -0500830#endif
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500831 net_send_packet(net_tx_packet, pktlen);
wdenk3861aa52002-09-27 23:19:37 +0000832}
833
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500834#if defined(CONFIG_CMD_DHCP)
Stefan Brüns774c3e02015-09-04 00:31:49 +0200835static void dhcp_process_options(uchar *popt, uchar *end)
wdenk3861aa52002-09-27 23:19:37 +0000836{
wdenk3861aa52002-09-27 23:19:37 +0000837 int oplen, size;
Wolfgang Denkd8d87242009-09-11 09:05:32 +0200838#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
839 int *to_ptr;
840#endif
wdenk3861aa52002-09-27 23:19:37 +0000841
wdenk232c1502004-03-12 00:14:09 +0000842 while (popt < end && *popt != 0xff) {
wdenk3861aa52002-09-27 23:19:37 +0000843 oplen = *(popt + 1);
wdenk232c1502004-03-12 00:14:09 +0000844 switch (*popt) {
Stefan Brünsc56eb572015-08-28 10:15:54 +0200845 case 0:
846 oplen = -1; /* Pad omits len byte */
847 break;
wdenk232c1502004-03-12 00:14:09 +0000848 case 1:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500849 net_copy_ip(&net_netmask, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000850 break;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500851#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkea287de2005-04-01 00:25:43 +0000852 case 2: /* Time offset */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500853 to_ptr = &net_ntp_time_offset;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500854 net_copy_u32((u32 *)to_ptr, (u32 *)(popt + 2));
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500855 net_ntp_time_offset = ntohl(net_ntp_time_offset);
wdenkea287de2005-04-01 00:25:43 +0000856 break;
857#endif
wdenk232c1502004-03-12 00:14:09 +0000858 case 3:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500859 net_copy_ip(&net_gateway, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000860 break;
861 case 6:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500862 net_copy_ip(&net_dns_server, (popt + 2));
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500863#if defined(CONFIG_BOOTP_DNS2)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000864 if (*(popt + 1) > 4)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500865 net_copy_ip(&net_dns_server2, (popt + 2 + 4));
stroesefe389a82003-08-28 14:17:32 +0000866#endif
wdenk232c1502004-03-12 00:14:09 +0000867 break;
868 case 12:
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000869 size = truncate_sz("Host Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500870 sizeof(net_hostname), oplen);
871 memcpy(&net_hostname, popt + 2, size);
872 net_hostname[size] = 0;
wdenk232c1502004-03-12 00:14:09 +0000873 break;
874 case 15: /* Ignore Domain Name Option */
875 break;
876 case 17:
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000877 size = truncate_sz("Root Path",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500878 sizeof(net_root_path), oplen);
879 memcpy(&net_root_path, popt + 2, size);
880 net_root_path[size] = 0;
wdenk232c1502004-03-12 00:14:09 +0000881 break;
Brian Rzyckiee0f60d2012-09-11 09:22:53 +0000882 case 28: /* Ignore Broadcast Address Option */
883 break;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500884#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
wdenkea287de2005-04-01 00:25:43 +0000885 case 42: /* NTP server IP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500886 net_copy_ip(&net_ntp_server, (popt + 2));
wdenkea287de2005-04-01 00:25:43 +0000887 break;
888#endif
wdenk232c1502004-03-12 00:14:09 +0000889 case 51:
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500890 net_copy_u32(&dhcp_leasetime, (u32 *)(popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000891 break;
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200892 case 52:
893 dhcp_option_overload = popt[2];
894 break;
wdenk232c1502004-03-12 00:14:09 +0000895 case 53: /* Ignore Message Type Option */
896 break;
897 case 54:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500898 net_copy_ip(&dhcp_server_ip, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000899 break;
900 case 58: /* Ignore Renewal Time Option */
901 break;
902 case 59: /* Ignore Rebinding Time Option */
903 break;
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100904 case 66: /* Ignore TFTP server name */
905 break;
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200906 case 67: /* Bootfile option */
Alexander Graf449312c2018-06-15 10:29:27 +0200907 if (!net_boot_file_name_explicit) {
908 size = truncate_sz("Bootfile",
909 sizeof(net_boot_file_name),
910 oplen);
911 memcpy(&net_boot_file_name, popt + 2, size);
912 net_boot_file_name[size] = 0;
913 }
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100914 break;
wdenk232c1502004-03-12 00:14:09 +0000915 default:
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500916#if defined(CONFIG_BOOTP_VENDOREX)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000917 if (dhcp_vendorex_proc(popt))
wdenk8bde7f72003-06-27 21:31:46 +0000918 break;
wdenk3861aa52002-09-27 23:19:37 +0000919#endif
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000920 printf("*** Unhandled DHCP Option in OFFER/ACK:"
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500921 " %d\n", *popt);
wdenk232c1502004-03-12 00:14:09 +0000922 break;
wdenk3861aa52002-09-27 23:19:37 +0000923 }
924 popt += oplen + 2; /* Process next option */
925 }
926}
927
Stefan Brüns774c3e02015-09-04 00:31:49 +0200928static void dhcp_packet_process_options(struct bootp_hdr *bp)
929{
930 uchar *popt = (uchar *)&bp->bp_vend[4];
931 uchar *end = popt + BOOTP_HDR_SIZE;
932
933 if (net_read_u32((u32 *)&bp->bp_vend[0]) != htonl(BOOTP_VENDOR_MAGIC))
934 return;
935
936 dhcp_option_overload = 0;
937
938 /*
939 * The 'options' field MUST be interpreted first, 'file' next,
940 * 'sname' last.
941 */
942 dhcp_process_options(popt, end);
943
944 if (dhcp_option_overload & OVERLOAD_FILE) {
945 popt = (uchar *)bp->bp_file;
946 end = popt + sizeof(bp->bp_file);
947 dhcp_process_options(popt, end);
948 }
949
950 if (dhcp_option_overload & OVERLOAD_SNAME) {
951 popt = (uchar *)bp->bp_sname;
952 end = popt + sizeof(bp->bp_sname);
953 dhcp_process_options(popt, end);
954 }
955}
956
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500957static int dhcp_message_type(unsigned char *popt)
wdenk3861aa52002-09-27 23:19:37 +0000958{
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500959 if (net_read_u32((u32 *)popt) != htonl(BOOTP_VENDOR_MAGIC))
wdenk3861aa52002-09-27 23:19:37 +0000960 return -1;
961
962 popt += 4;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000963 while (*popt != 0xff) {
964 if (*popt == 53) /* DHCP Message Type */
wdenk3861aa52002-09-27 23:19:37 +0000965 return *(popt + 2);
Stefan Brünsc56eb572015-08-28 10:15:54 +0200966 if (*popt == 0) {
967 /* Pad */
968 popt += 1;
969 } else {
970 /* Scan through all options */
971 popt += *(popt + 1) + 2;
972 }
wdenk3861aa52002-09-27 23:19:37 +0000973 }
974 return -1;
975}
976
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500977static void dhcp_send_request_packet(struct bootp_hdr *bp_offer)
wdenk3861aa52002-09-27 23:19:37 +0000978{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000979 uchar *pkt, *iphdr;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500980 struct bootp_hdr *bp;
wdenk3861aa52002-09-27 23:19:37 +0000981 int pktlen, iplen, extlen;
Joe Hershbergerae446f52012-05-23 07:59:10 +0000982 int eth_hdr_size;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500983 struct in_addr offered_ip;
984 struct in_addr zero_ip;
985 struct in_addr bcast_ip;
wdenk3861aa52002-09-27 23:19:37 +0000986
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500987 debug("dhcp_send_request_packet: Sending DHCPREQUEST\n");
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500988 pkt = net_tx_packet;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000989 memset((void *)pkt, 0, PKTSIZE);
wdenk3861aa52002-09-27 23:19:37 +0000990
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500991 eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP);
Joe Hershbergerae446f52012-05-23 07:59:10 +0000992 pkt += eth_hdr_size;
wdenk3861aa52002-09-27 23:19:37 +0000993
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000994 iphdr = pkt; /* We'll need this later to set proper pkt size */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000995 pkt += IP_UDP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000996
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500997 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000998 bp->bp_op = OP_BOOTREQUEST;
999 bp->bp_htype = HWT_ETHER;
1000 bp->bp_hlen = HWL_ETHER;
1001 bp->bp_hops = 0;
Stefan Brüns454d9d32015-08-27 23:57:18 +02001002 bp->bp_secs = htons(get_timer(bootp_start) / 1000);
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001003 /* Do not set the client IP, your IP, or server IP yet, since it
1004 * hasn't been ACK'ed by the server yet */
Justin Flammiae5c794e2007-10-29 17:40:35 -04001005
Wolfgang Denkc6686702006-10-12 00:01:08 +02001006 /*
Wolfgang Denkd82718f2006-10-09 01:26:14 +02001007 * RFC3046 requires Relay Agents to discard packets with
1008 * nonzero and offered giaddr
1009 */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001010 zero_ip.s_addr = 0;
1011 net_write_ip(&bp->bp_giaddr, zero_ip);
Wolfgang Denkd82718f2006-10-09 01:26:14 +02001012
Joe Hershberger0adb5b72015-04-08 01:41:04 -05001013 memcpy(bp->bp_chaddr, net_ethaddr, 6);
Alexandre Messierb2b7fbc2016-01-28 11:19:02 -05001014 copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file));
wdenk3861aa52002-09-27 23:19:37 +00001015
1016 /*
1017 * ID is the id of the OFFER packet
1018 */
1019
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -05001020 net_copy_u32(&bp->bp_id, &bp_offer->bp_id);
wdenk3861aa52002-09-27 23:19:37 +00001021
1022 /*
1023 * Copy options from OFFER packet if present
1024 */
Justin Flammiae5c794e2007-10-29 17:40:35 -04001025
1026 /* Copy offered IP into the parameters request list */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001027 net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr);
1028 extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST,
1029 dhcp_server_ip, offered_ip);
wdenk3861aa52002-09-27 23:19:37 +00001030
Joe Hershbergerae446f52012-05-23 07:59:10 +00001031 iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
1032 pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
Joe Hershberger049a95a2015-04-08 01:41:01 -05001033 bcast_ip.s_addr = 0xFFFFFFFFL;
1034 net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen);
wdenk3861aa52002-09-27 23:19:37 +00001035
Joe Hershbergerf9623222012-05-23 07:59:11 +00001036 debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen);
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001037 net_send_packet(net_tx_packet, pktlen);
wdenk3861aa52002-09-27 23:19:37 +00001038}
1039
1040/*
1041 * Handle DHCP received packets.
1042 */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001043static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
1044 unsigned src, unsigned len)
wdenk3861aa52002-09-27 23:19:37 +00001045{
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001046 struct bootp_hdr *bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +00001047
Robin Getz0ebf04c2009-07-23 03:01:03 -04001048 debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001049 src, dest, len, dhcp_state);
wdenk3861aa52002-09-27 23:19:37 +00001050
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001051 /* Filter out pkts we don't want */
Stefan Brüns867d6ae2015-08-27 23:53:26 +02001052 if (check_reply_packet(pkt, dest, src, len))
wdenk3861aa52002-09-27 23:19:37 +00001053 return;
1054
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001055 debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: "
1056 "%d\n", src, dest, len, dhcp_state);
wdenk3861aa52002-09-27 23:19:37 +00001057
Lyle Franklinc8e251f2019-08-05 06:23:42 -04001058 if (net_read_ip(&bp->bp_yiaddr).s_addr == 0) {
1059#if defined(CONFIG_SERVERIP_FROM_PROXYDHCP)
1060 store_bootp_params(bp);
1061#endif
Peng Fan44c42dd2016-01-07 15:28:23 +08001062 return;
Lyle Franklinc8e251f2019-08-05 06:23:42 -04001063 }
Peng Fan44c42dd2016-01-07 15:28:23 +08001064
wdenk3861aa52002-09-27 23:19:37 +00001065 switch (dhcp_state) {
1066 case SELECTING:
1067 /*
1068 * Wait an appropriate time for any potential DHCPOFFER packets
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001069 * to arrive. Then select one, and generate DHCPREQUEST
1070 * response. If filename is in format we recognize, assume it
1071 * is a valid OFFER from a server we want.
wdenk3861aa52002-09-27 23:19:37 +00001072 */
Robin Getz0ebf04c2009-07-23 03:01:03 -04001073 debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001074#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +00001075 if (strncmp(bp->bp_file,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001076 CONFIG_SYS_BOOTFILE_PREFIX,
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001077 strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001078#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
Stefan Brüns774c3e02015-09-04 00:31:49 +02001079 dhcp_packet_process_options(bp);
Jan Kiszka77b5c4a2022-10-14 18:10:06 +02001080 if (CONFIG_IS_ENABLED(EFI_LOADER) &&
Heinrich Schuchardtbdb060a2022-11-26 16:32:25 +01001081 CONFIG_IS_ENABLED(NETDEVICES))
Jan Kiszka77b5c4a2022-10-14 18:10:06 +02001082 efi_net_set_dhcp_ack(pkt, len);
wdenk3861aa52002-09-27 23:19:37 +00001083
Lyle Franklinc8e251f2019-08-05 06:23:42 -04001084#if defined(CONFIG_SERVERIP_FROM_PROXYDHCP)
1085 if (!net_server_ip.s_addr)
1086 udelay(CONFIG_SERVERIP_FROM_PROXYDHCP_DELAY_MS *
1087 1000);
1088#endif /* CONFIG_SERVERIP_FROM_PROXYDHCP */
1089
Robin Getz0ebf04c2009-07-23 03:01:03 -04001090 debug("TRANSITIONING TO REQUESTING STATE\n");
wdenk3861aa52002-09-27 23:19:37 +00001091 dhcp_state = REQUESTING;
stroese759a51b2003-04-10 13:26:44 +00001092
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001093 net_set_timeout_handler(5000, bootp_timeout_handler);
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001094 dhcp_send_request_packet(bp);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001095#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +00001096 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001097#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +00001098
1099 return;
1100 break;
1101 case REQUESTING:
Robin Getz0ebf04c2009-07-23 03:01:03 -04001102 debug("DHCP State: REQUESTING\n");
wdenk3861aa52002-09-27 23:19:37 +00001103
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001104 if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) {
Stefan Brüns774c3e02015-09-04 00:31:49 +02001105 dhcp_packet_process_options(bp);
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001106 /* Store net params from reply */
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001107 store_net_params(bp);
wdenk3861aa52002-09-27 23:19:37 +00001108 dhcp_state = BOUND;
Thierry Reding92ac8ac2014-08-19 10:21:24 +02001109 printf("DHCP client bound to address %pI4 (%lu ms)\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001110 &net_ip, get_timer(bootp_start));
Stefan Brüns4f28c9b2015-08-30 17:47:17 +02001111 net_set_timeout_handler(0, (thand_f *)0);
Simon Glass573f14f2011-12-10 11:08:06 +00001112 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP,
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001113 "bootp_stop");
wdenk3861aa52002-09-27 23:19:37 +00001114
Simon Glasse4a3d572011-10-27 06:24:32 +00001115 net_auto_load();
wdenk3861aa52002-09-27 23:19:37 +00001116 return;
1117 }
1118 break;
Remy Bohmer51dfe132008-08-20 11:30:28 +02001119 case BOUND:
1120 /* DHCP client bound to address */
1121 break;
wdenk3861aa52002-09-27 23:19:37 +00001122 default:
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001123 puts("DHCP: INVALID STATE\n");
wdenk3861aa52002-09-27 23:19:37 +00001124 break;
1125 }
wdenk3861aa52002-09-27 23:19:37 +00001126}
1127
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001128void dhcp_request(void)
wdenk3861aa52002-09-27 23:19:37 +00001129{
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001130 bootp_request();
wdenk3861aa52002-09-27 23:19:37 +00001131}
Wolfgang Denk992742a2007-11-03 23:09:27 +01001132#endif /* CONFIG_CMD_DHCP */