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wdenk3861aa52002-09-27 23:19:37 +00001/*
2 * Based on LiMon - BOOTP.
3 *
4 * Copyright 1994, 1995, 2000 Neil Russell.
5 * (See License)
6 * Copyright 2000 Roland Borde
7 * Copyright 2000 Paolo Scaffardi
wdenk232c1502004-03-12 00:14:09 +00008 * Copyright 2000-2004 Wolfgang Denk, wd@denx.de
wdenk3861aa52002-09-27 23:19:37 +00009 */
10
wdenk3861aa52002-09-27 23:19:37 +000011#include <common.h>
12#include <command.h>
Alexander Graf0efe1bc2016-05-06 21:01:01 +020013#include <efi_loader.h>
wdenk3861aa52002-09-27 23:19:37 +000014#include <net.h>
Lukasz Majewski34696952015-08-24 00:21:43 +020015#include <net/tftp.h>
wdenk3861aa52002-09-27 23:19:37 +000016#include "bootp.h"
Uri Mashiach2d8d1902017-01-19 10:51:45 +020017#ifdef CONFIG_LED_STATUS
wdenk3861aa52002-09-27 23:19:37 +000018#include <status_led.h>
19#endif
Kim Phillipsdb7720b2012-07-05 13:19:32 +000020#ifdef CONFIG_BOOTP_RANDOM_DELAY
21#include "net_rand.h"
22#endif
wdenk3861aa52002-09-27 23:19:37 +000023
Joe Hershberger3090b7e32012-05-15 08:59:06 +000024#define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */
wdenk3861aa52002-09-27 23:19:37 +000025
Stephen Warrenf59be6e2014-07-25 17:30:48 -060026/*
27 * The timeout for the initial BOOTP/DHCP request used to be described by a
28 * counter of fixed-length timeout periods. TIMEOUT_COUNT represents
29 * that counter
30 *
31 * Now that the timeout periods are variable (exponential backoff and retry)
32 * we convert the timeout count to the absolute time it would have take to
33 * execute that many retries, and keep sending retry packets until that time
34 * is reached.
35 */
wdenk232c1502004-03-12 00:14:09 +000036#ifndef CONFIG_NET_RETRY_COUNT
Joe Hershberger3090b7e32012-05-15 08:59:06 +000037# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
wdenk3861aa52002-09-27 23:19:37 +000038#else
wdenk232c1502004-03-12 00:14:09 +000039# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
wdenk3861aa52002-09-27 23:19:37 +000040#endif
Stephen Warrenf59be6e2014-07-25 17:30:48 -060041#define TIMEOUT_MS ((3 + (TIMEOUT_COUNT * 5)) * 1000)
wdenk3861aa52002-09-27 23:19:37 +000042
Joe Hershberger3090b7e32012-05-15 08:59:06 +000043#define PORT_BOOTPS 67 /* BOOTP server UDP port */
44#define PORT_BOOTPC 68 /* BOOTP client UDP port */
wdenk3861aa52002-09-27 23:19:37 +000045
Joe Hershberger3090b7e32012-05-15 08:59:06 +000046#ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */
wdenk232c1502004-03-12 00:14:09 +000047#define CONFIG_DHCP_MIN_EXT_LEN 64
wdenk3861aa52002-09-27 23:19:37 +000048#endif
49
Thierry Reding92ac8ac2014-08-19 10:21:24 +020050#ifndef CONFIG_BOOTP_ID_CACHE_SIZE
51#define CONFIG_BOOTP_ID_CACHE_SIZE 4
52#endif
53
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -050054u32 bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE];
Thierry Reding92ac8ac2014-08-19 10:21:24 +020055unsigned int bootp_num_ids;
Joe Hershberger7044c6b2015-04-08 01:41:09 -050056int bootp_try;
Stephen Warrenf59be6e2014-07-25 17:30:48 -060057ulong bootp_start;
58ulong bootp_timeout;
Joe Hershberger586cbe52015-04-08 01:41:03 -050059char net_nis_domain[32] = {0,}; /* Our NIS domain */
60char net_hostname[32] = {0,}; /* Our hostname */
61char net_root_path[64] = {0,}; /* Our bootpath */
wdenk3861aa52002-09-27 23:19:37 +000062
Alexandre Messier50768f52016-02-01 17:08:57 -050063static ulong time_taken_max;
64
Jon Loeliger643d1ab2007-07-09 17:45:14 -050065#if defined(CONFIG_CMD_DHCP)
Kim Phillips06370592012-10-29 13:34:33 +000066static dhcp_state_t dhcp_state = INIT;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -050067static u32 dhcp_leasetime;
Joe Hershberger049a95a2015-04-08 01:41:01 -050068static struct in_addr dhcp_server_ip;
Stefan Brünsec87b1b2015-09-04 00:31:48 +020069static u8 dhcp_option_overload;
70#define OVERLOAD_FILE 1
71#define OVERLOAD_SNAME 2
Joe Hershberger049a95a2015-04-08 01:41:01 -050072static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
73 unsigned src, unsigned len);
wdenk3861aa52002-09-27 23:19:37 +000074
75/* For Debug */
wdenk3e386912003-04-05 00:53:31 +000076#if 0
77static char *dhcpmsg2str(int type)
wdenk3861aa52002-09-27 23:19:37 +000078{
79 switch (type) {
wdenk232c1502004-03-12 00:14:09 +000080 case 1: return "DHCPDISCOVER"; break;
81 case 2: return "DHCPOFFER"; break;
82 case 3: return "DHCPREQUEST"; break;
83 case 4: return "DHCPDECLINE"; break;
84 case 5: return "DHCPACK"; break;
85 case 6: return "DHCPNACK"; break;
86 case 7: return "DHCPRELEASE"; break;
wdenk3861aa52002-09-27 23:19:37 +000087 default: return "UNKNOWN/INVALID MSG TYPE"; break;
88 }
89}
wdenk3e386912003-04-05 00:53:31 +000090#endif
Jon Loeliger610f2e92007-07-10 11:05:02 -050091#endif
wdenk3861aa52002-09-27 23:19:37 +000092
Thierry Reding92ac8ac2014-08-19 10:21:24 +020093static void bootp_add_id(ulong id)
94{
95 if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) {
96 size_t size = sizeof(bootp_ids) - sizeof(id);
97
98 memmove(bootp_ids, &bootp_ids[1], size);
99 bootp_ids[bootp_num_ids - 1] = id;
100 } else {
101 bootp_ids[bootp_num_ids] = id;
102 bootp_num_ids++;
103 }
104}
105
106static bool bootp_match_id(ulong id)
107{
108 unsigned int i;
109
110 for (i = 0; i < bootp_num_ids; i++)
111 if (bootp_ids[i] == id)
112 return true;
113
114 return false;
115}
116
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200117static int check_reply_packet(uchar *pkt, unsigned dest, unsigned src,
118 unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000119{
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500120 struct bootp_hdr *bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000121 int retval = 0;
122
123 if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
124 retval = -1;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500125 else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE)
wdenk3861aa52002-09-27 23:19:37 +0000126 retval = -2;
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200127 else if (bp->bp_op != OP_BOOTREPLY)
wdenk3861aa52002-09-27 23:19:37 +0000128 retval = -3;
wdenk3861aa52002-09-27 23:19:37 +0000129 else if (bp->bp_htype != HWT_ETHER)
130 retval = -4;
131 else if (bp->bp_hlen != HWL_ETHER)
132 retval = -5;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500133 else if (!bootp_match_id(net_read_u32(&bp->bp_id)))
wdenk3861aa52002-09-27 23:19:37 +0000134 retval = -6;
Anton Persson214cc902016-03-17 09:38:21 +0100135 else if (memcmp(bp->bp_chaddr, net_ethaddr, HWL_ETHER) != 0)
136 retval = -7;
wdenk3861aa52002-09-27 23:19:37 +0000137
Robin Getz0ebf04c2009-07-23 03:01:03 -0400138 debug("Filtering pkt = %d\n", retval);
wdenk3861aa52002-09-27 23:19:37 +0000139
140 return retval;
141}
142
143/*
144 * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
145 */
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500146static void store_net_params(struct bootp_hdr *bp)
wdenk3861aa52002-09-27 23:19:37 +0000147{
Wilson Callan5d110f02007-07-28 10:56:13 -0400148#if !defined(CONFIG_BOOTP_SERVERIP)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500149 struct in_addr tmp_ip;
Joe Hershberger1752f0f2012-05-23 07:59:18 +0000150
Joe Hershberger049a95a2015-04-08 01:41:01 -0500151 net_copy_ip(&tmp_ip, &bp->bp_siaddr);
152 if (tmp_ip.s_addr != 0)
153 net_copy_ip(&net_server_ip, &bp->bp_siaddr);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500154 memcpy(net_server_ethaddr,
155 ((struct ethernet_hdr *)net_rx_packet)->et_src, 6);
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200156 if (
157#if defined(CONFIG_CMD_DHCP)
158 !(dhcp_option_overload & OVERLOAD_FILE) &&
159#endif
160 (strlen(bp->bp_file) > 0)) {
Joe Hershberger14111572015-04-08 01:41:02 -0500161 copy_filename(net_boot_file_name, bp->bp_file,
162 sizeof(net_boot_file_name));
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200163 }
wdenk3861aa52002-09-27 23:19:37 +0000164
Joe Hershberger14111572015-04-08 01:41:02 -0500165 debug("net_boot_file_name: %s\n", net_boot_file_name);
wdenk3861aa52002-09-27 23:19:37 +0000166
167 /* Propagate to environment:
wdenk8bde7f72003-06-27 21:31:46 +0000168 * don't delete exising entry when BOOTP / DHCP reply does
wdenk3861aa52002-09-27 23:19:37 +0000169 * not contain a new value
170 */
Joe Hershberger14111572015-04-08 01:41:02 -0500171 if (*net_boot_file_name)
Simon Glass382bee52017-08-03 12:22:09 -0600172 env_set("bootfile", net_boot_file_name);
Wu, Joshecec4e92014-11-18 13:07:08 +0800173#endif
Joe Hershberger049a95a2015-04-08 01:41:01 -0500174 net_copy_ip(&net_ip, &bp->bp_yiaddr);
wdenk3861aa52002-09-27 23:19:37 +0000175}
176
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000177static int truncate_sz(const char *name, int maxlen, int curlen)
wdenk3861aa52002-09-27 23:19:37 +0000178{
179 if (curlen >= maxlen) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000180 printf("*** WARNING: %s is too long (%d - max: %d)"
181 " - truncated\n", name, curlen, maxlen);
wdenk3861aa52002-09-27 23:19:37 +0000182 curlen = maxlen - 1;
183 }
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000184 return curlen;
wdenk3861aa52002-09-27 23:19:37 +0000185}
186
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500187#if !defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000188
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500189static void bootp_process_vendor_field(u8 *ext)
wdenk3861aa52002-09-27 23:19:37 +0000190{
wdenk232c1502004-03-12 00:14:09 +0000191 int size = *(ext + 1);
wdenk3861aa52002-09-27 23:19:37 +0000192
Robin Getz0ebf04c2009-07-23 03:01:03 -0400193 debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext,
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500194 *(ext + 1));
wdenk3861aa52002-09-27 23:19:37 +0000195
Joe Hershberger14111572015-04-08 01:41:02 -0500196 net_boot_file_expected_size_in_blocks = 0;
wdenk3861aa52002-09-27 23:19:37 +0000197
wdenk232c1502004-03-12 00:14:09 +0000198 switch (*ext) {
199 /* Fixed length fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000200 case 1: /* Subnet mask */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500201 if (net_netmask.s_addr == 0)
202 net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000203 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000204 case 2: /* Time offset - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000205 break;
wdenk232c1502004-03-12 00:14:09 +0000206 /* Variable length fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000207 case 3: /* Gateways list */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500208 if (net_gateway.s_addr == 0)
209 net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000210 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000211 case 4: /* Time server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000212 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000213 case 5: /* IEN-116 name server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000214 break;
215 case 6:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500216 if (net_dns_server.s_addr == 0)
217 net_copy_ip(&net_dns_server,
218 (struct in_addr *)(ext + 2));
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500219#if defined(CONFIG_BOOTP_DNS2)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500220 if ((net_dns_server2.s_addr == 0) && (size > 4))
221 net_copy_ip(&net_dns_server2,
222 (struct in_addr *)(ext + 2 + 4));
stroesefe389a82003-08-28 14:17:32 +0000223#endif
wdenk3861aa52002-09-27 23:19:37 +0000224 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000225 case 7: /* Log server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000226 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000227 case 8: /* Cookie/Quote server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000228 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000229 case 9: /* LPR server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000230 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000231 case 10: /* Impress server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000232 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000233 case 11: /* RPL server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000234 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000235 case 12: /* Host name */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500236 if (net_hostname[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000237 size = truncate_sz("Host Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500238 sizeof(net_hostname), size);
239 memcpy(&net_hostname, ext + 2, size);
240 net_hostname[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000241 }
242 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000243 case 13: /* Boot file size */
wdenk3861aa52002-09-27 23:19:37 +0000244 if (size == 2)
Joe Hershberger14111572015-04-08 01:41:02 -0500245 net_boot_file_expected_size_in_blocks =
246 ntohs(*(ushort *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000247 else if (size == 4)
Joe Hershberger14111572015-04-08 01:41:02 -0500248 net_boot_file_expected_size_in_blocks =
249 ntohl(*(ulong *)(ext + 2));
wdenk3861aa52002-09-27 23:19:37 +0000250 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000251 case 14: /* Merit dump file - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000252 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000253 case 15: /* Domain name - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000254 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000255 case 16: /* Swap server - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000256 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000257 case 17: /* Root path */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500258 if (net_root_path[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000259 size = truncate_sz("Root Path",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500260 sizeof(net_root_path), size);
261 memcpy(&net_root_path, ext + 2, size);
262 net_root_path[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000263 }
264 break;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000265 case 18: /* Extension path - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000266 /*
wdenk8bde7f72003-06-27 21:31:46 +0000267 * This can be used to send the information of the
268 * vendor area in another file that the client can
269 * access via TFTP.
wdenk3861aa52002-09-27 23:19:37 +0000270 */
271 break;
wdenk232c1502004-03-12 00:14:09 +0000272 /* IP host layer fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000273 case 40: /* NIS Domain name */
Joe Hershberger586cbe52015-04-08 01:41:03 -0500274 if (net_nis_domain[0] == 0) {
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000275 size = truncate_sz("NIS Domain Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500276 sizeof(net_nis_domain), size);
277 memcpy(&net_nis_domain, ext + 2, size);
278 net_nis_domain[size] = 0;
wdenk3861aa52002-09-27 23:19:37 +0000279 }
280 break;
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000281#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
282 case 42: /* NTP server IP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500283 net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2));
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000284 break;
285#endif
wdenk232c1502004-03-12 00:14:09 +0000286 /* Application layer fields */
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000287 case 43: /* Vendor specific info - Not yet supported */
wdenk3861aa52002-09-27 23:19:37 +0000288 /*
wdenk8bde7f72003-06-27 21:31:46 +0000289 * Binary information to exchange specific
290 * product information.
wdenk3861aa52002-09-27 23:19:37 +0000291 */
292 break;
wdenk232c1502004-03-12 00:14:09 +0000293 /* Reserved (custom) fields (128..254) */
294 }
wdenk3861aa52002-09-27 23:19:37 +0000295}
296
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500297static void bootp_process_vendor(u8 *ext, int size)
wdenk3861aa52002-09-27 23:19:37 +0000298{
wdenk232c1502004-03-12 00:14:09 +0000299 u8 *end = ext + size;
wdenk3861aa52002-09-27 23:19:37 +0000300
Robin Getz0ebf04c2009-07-23 03:01:03 -0400301 debug("[BOOTP] Checking extension (%d bytes)...\n", size);
wdenk3861aa52002-09-27 23:19:37 +0000302
wdenk232c1502004-03-12 00:14:09 +0000303 while ((ext < end) && (*ext != 0xff)) {
304 if (*ext == 0) {
305 ext++;
306 } else {
307 u8 *opt = ext;
308
309 ext += ext[1] + 2;
310 if (ext <= end)
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500311 bootp_process_vendor_field(opt);
wdenk232c1502004-03-12 00:14:09 +0000312 }
wdenk3861aa52002-09-27 23:19:37 +0000313 }
wdenk3861aa52002-09-27 23:19:37 +0000314
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000315 debug("[BOOTP] Received fields:\n");
Joe Hershberger049a95a2015-04-08 01:41:01 -0500316 if (net_netmask.s_addr)
317 debug("net_netmask : %pI4\n", &net_netmask);
wdenk3861aa52002-09-27 23:19:37 +0000318
Joe Hershberger049a95a2015-04-08 01:41:01 -0500319 if (net_gateway.s_addr)
320 debug("net_gateway : %pI4", &net_gateway);
wdenk3861aa52002-09-27 23:19:37 +0000321
Joe Hershberger14111572015-04-08 01:41:02 -0500322 if (net_boot_file_expected_size_in_blocks)
323 debug("net_boot_file_expected_size_in_blocks : %d\n",
324 net_boot_file_expected_size_in_blocks);
wdenk3861aa52002-09-27 23:19:37 +0000325
Joe Hershberger586cbe52015-04-08 01:41:03 -0500326 if (net_hostname[0])
327 debug("net_hostname : %s\n", net_hostname);
wdenk3861aa52002-09-27 23:19:37 +0000328
Joe Hershberger586cbe52015-04-08 01:41:03 -0500329 if (net_root_path[0])
330 debug("net_root_path : %s\n", net_root_path);
wdenk3861aa52002-09-27 23:19:37 +0000331
Joe Hershberger586cbe52015-04-08 01:41:03 -0500332 if (net_nis_domain[0])
333 debug("net_nis_domain : %s\n", net_nis_domain);
wdenk3861aa52002-09-27 23:19:37 +0000334
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000335#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500336 if (net_ntp_server)
337 debug("net_ntp_server : %pI4\n", &net_ntp_server);
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000338#endif
wdenk3861aa52002-09-27 23:19:37 +0000339}
Simon Glass09349862011-06-13 16:13:12 -0700340
wdenk3861aa52002-09-27 23:19:37 +0000341/*
342 * Handle a BOOTP received packet.
343 */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500344static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
345 unsigned src, unsigned len)
wdenk3861aa52002-09-27 23:19:37 +0000346{
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500347 struct bootp_hdr *bp;
wdenk3861aa52002-09-27 23:19:37 +0000348
Robin Getz0ebf04c2009-07-23 03:01:03 -0400349 debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500350 src, dest, len, sizeof(struct bootp_hdr));
wdenk3861aa52002-09-27 23:19:37 +0000351
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500352 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000353
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000354 /* Filter out pkts we don't want */
Stefan Brüns867d6ae2015-08-27 23:53:26 +0200355 if (check_reply_packet(pkt, dest, src, len))
wdenk3861aa52002-09-27 23:19:37 +0000356 return;
357
358 /*
wdenk232c1502004-03-12 00:14:09 +0000359 * Got a good BOOTP reply. Copy the data into our variables.
wdenk3861aa52002-09-27 23:19:37 +0000360 */
Uri Mashiach2d8d1902017-01-19 10:51:45 +0200361#if defined(CONFIG_LED_STATUS) && defined(CONFIG_LED_STATUS_BOOT_ENABLE)
362 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_OFF);
wdenk3861aa52002-09-27 23:19:37 +0000363#endif
364
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500365 store_net_params(bp); /* Store net parameters from reply */
wdenk3861aa52002-09-27 23:19:37 +0000366
367 /* Retrieve extended information (we must parse the vendor area) */
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500368 if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500369 bootp_process_vendor((uchar *)&bp->bp_vend[4], len);
wdenk3861aa52002-09-27 23:19:37 +0000370
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500371 net_set_timeout_handler(0, (thand_f *)0);
Simon Glass573f14f2011-12-10 11:08:06 +0000372 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop");
wdenk3861aa52002-09-27 23:19:37 +0000373
Robin Getz0ebf04c2009-07-23 03:01:03 -0400374 debug("Got good BOOTP\n");
wdenk3861aa52002-09-27 23:19:37 +0000375
Simon Glasse4a3d572011-10-27 06:24:32 +0000376 net_auto_load();
wdenk3861aa52002-09-27 23:19:37 +0000377}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500378#endif
wdenk3861aa52002-09-27 23:19:37 +0000379
380/*
381 * Timeout on BOOTP/DHCP request.
382 */
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500383static void bootp_timeout_handler(void)
wdenk3861aa52002-09-27 23:19:37 +0000384{
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600385 ulong time_taken = get_timer(bootp_start);
386
Alexandre Messier50768f52016-02-01 17:08:57 -0500387 if (time_taken >= time_taken_max) {
Joe Hershberger2c00e092012-05-23 07:59:19 +0000388#ifdef CONFIG_BOOTP_MAY_FAIL
Joe Hershberger2099b9f2017-11-07 18:13:40 -0800389 char *ethrotate;
390
391 ethrotate = env_get("ethrotate");
392 if ((ethrotate && strcmp(ethrotate, "no") == 0) ||
393 net_restart_wrap) {
394 puts("\nRetry time exceeded\n");
395 net_set_state(NETLOOP_FAIL);
396 } else
Joe Hershberger2c00e092012-05-23 07:59:19 +0000397#endif
Joe Hershberger2099b9f2017-11-07 18:13:40 -0800398 {
399 puts("\nRetry time exceeded; starting again\n");
400 net_start_again();
401 }
wdenk3861aa52002-09-27 23:19:37 +0000402 } else {
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600403 bootp_timeout *= 2;
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200404 if (bootp_timeout > 2000)
405 bootp_timeout = 2000;
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500406 net_set_timeout_handler(bootp_timeout, bootp_timeout_handler);
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500407 bootp_request();
wdenk3861aa52002-09-27 23:19:37 +0000408 }
409}
410
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000411#define put_vci(e, str) \
412 do { \
413 size_t vci_strlen = strlen(str); \
414 *e++ = 60; /* Vendor Class Identifier */ \
415 *e++ = vci_strlen; \
416 memcpy(e, str, vci_strlen); \
417 e += vci_strlen; \
418 } while (0)
419
Alexander Graf4570a992016-05-06 21:01:02 +0200420static u8 *add_vci(u8 *e)
421{
Alexander Graf20898ea2016-05-06 21:01:07 +0200422 char *vci = NULL;
Simon Glass00caae62017-08-03 12:22:12 -0600423 char *env_vci = env_get("bootp_vci");
Alexander Graf20898ea2016-05-06 21:01:07 +0200424
Alexander Graf4570a992016-05-06 21:01:02 +0200425#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING)
Alexander Graf20898ea2016-05-06 21:01:07 +0200426 vci = CONFIG_SPL_NET_VCI_STRING;
Alexander Graf4570a992016-05-06 21:01:02 +0200427#elif defined(CONFIG_BOOTP_VCI_STRING)
Alexander Graf20898ea2016-05-06 21:01:07 +0200428 vci = CONFIG_BOOTP_VCI_STRING;
Alexander Graf4570a992016-05-06 21:01:02 +0200429#endif
430
Alexander Graf20898ea2016-05-06 21:01:07 +0200431 if (env_vci)
432 vci = env_vci;
433
434 if (vci)
435 put_vci(e, vci);
436
Alexander Graf4570a992016-05-06 21:01:02 +0200437 return e;
438}
439
wdenk3861aa52002-09-27 23:19:37 +0000440/*
441 * Initialize BOOTP extension fields in the request.
442 */
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500443#if defined(CONFIG_CMD_DHCP)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500444static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip,
445 struct in_addr requested_ip)
wdenk3861aa52002-09-27 23:19:37 +0000446{
wdenk232c1502004-03-12 00:14:09 +0000447 u8 *start = e;
448 u8 *cnt;
Alexander Grafbc6fc282016-05-12 15:51:45 +0200449#ifdef CONFIG_LIB_UUID
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000450 char *uuid;
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000451#endif
Alexander Grafbc6fc282016-05-12 15:51:45 +0200452 int clientarch = -1;
wdenk232c1502004-03-12 00:14:09 +0000453
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500454#if defined(CONFIG_BOOTP_VENDOREX)
wdenk232c1502004-03-12 00:14:09 +0000455 u8 *x;
wdenk3861aa52002-09-27 23:19:37 +0000456#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500457#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200458 char *hostname;
stroesefe389a82003-08-28 14:17:32 +0000459#endif
wdenk3861aa52002-09-27 23:19:37 +0000460
wdenk232c1502004-03-12 00:14:09 +0000461 *e++ = 99; /* RFC1048 Magic Cookie */
462 *e++ = 130;
463 *e++ = 83;
464 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000465
wdenk232c1502004-03-12 00:14:09 +0000466 *e++ = 53; /* DHCP Message Type */
467 *e++ = 1;
468 *e++ = message_type;
wdenk3861aa52002-09-27 23:19:37 +0000469
wdenk232c1502004-03-12 00:14:09 +0000470 *e++ = 57; /* Maximum DHCP Message Size */
471 *e++ = 2;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000472 *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8;
473 *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
wdenk3861aa52002-09-27 23:19:37 +0000474
Joe Hershberger049a95a2015-04-08 01:41:01 -0500475 if (server_ip.s_addr) {
476 int tmp = ntohl(server_ip.s_addr);
wdenk3861aa52002-09-27 23:19:37 +0000477
wdenk232c1502004-03-12 00:14:09 +0000478 *e++ = 54; /* ServerID */
479 *e++ = 4;
480 *e++ = tmp >> 24;
481 *e++ = tmp >> 16;
482 *e++ = tmp >> 8;
483 *e++ = tmp & 0xff;
484 }
wdenk3861aa52002-09-27 23:19:37 +0000485
Joe Hershberger049a95a2015-04-08 01:41:01 -0500486 if (requested_ip.s_addr) {
487 int tmp = ntohl(requested_ip.s_addr);
wdenk3861aa52002-09-27 23:19:37 +0000488
wdenk232c1502004-03-12 00:14:09 +0000489 *e++ = 50; /* Requested IP */
490 *e++ = 4;
491 *e++ = tmp >> 24;
492 *e++ = tmp >> 16;
493 *e++ = tmp >> 8;
494 *e++ = tmp & 0xff;
495 }
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500496#if defined(CONFIG_BOOTP_SEND_HOSTNAME)
Simon Glass00caae62017-08-03 12:22:12 -0600497 hostname = env_get("hostname");
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000498 if (hostname) {
499 int hostnamelen = strlen(hostname);
wdenk232c1502004-03-12 00:14:09 +0000500
501 *e++ = 12; /* Hostname */
502 *e++ = hostnamelen;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000503 memcpy(e, hostname, hostnamelen);
wdenk232c1502004-03-12 00:14:09 +0000504 e += hostnamelen;
505 }
stroesefe389a82003-08-28 14:17:32 +0000506#endif
507
Alexander Grafbc6fc282016-05-12 15:51:45 +0200508#ifdef CONFIG_BOOTP_PXE_CLIENTARCH
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000509 clientarch = CONFIG_BOOTP_PXE_CLIENTARCH;
Alexander Grafbc6fc282016-05-12 15:51:45 +0200510#endif
511
Simon Glass00caae62017-08-03 12:22:12 -0600512 if (env_get("bootp_arch"))
Simon Glassbfebc8c2017-08-03 12:22:13 -0600513 clientarch = env_get_ulong("bootp_arch", 16, clientarch);
Alexander Grafbc6fc282016-05-12 15:51:45 +0200514
515 if (clientarch > 0) {
516 *e++ = 93; /* Client System Architecture */
517 *e++ = 2;
518 *e++ = (clientarch >> 8) & 0xff;
519 *e++ = clientarch & 0xff;
520 }
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000521
522 *e++ = 94; /* Client Network Interface Identifier */
523 *e++ = 3;
524 *e++ = 1; /* type field for UNDI */
525 *e++ = 0; /* major revision */
526 *e++ = 0; /* minor revision */
527
Alexander Grafbc6fc282016-05-12 15:51:45 +0200528#ifdef CONFIG_LIB_UUID
Simon Glass00caae62017-08-03 12:22:12 -0600529 uuid = env_get("pxeuuid");
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000530
531 if (uuid) {
532 if (uuid_str_valid(uuid)) {
533 *e++ = 97; /* Client Machine Identifier */
534 *e++ = 17;
535 *e++ = 0; /* type 0 - UUID */
536
Przemyslaw Marczakd718ded2014-04-02 10:20:03 +0200537 uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD);
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000538 e += 16;
539 } else {
540 printf("Invalid pxeuuid: %s\n", uuid);
541 }
542 }
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000543#endif
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000544
Alexander Graf4570a992016-05-06 21:01:02 +0200545 e = add_vci(e);
Jason Hobbsd2b5d5c2011-08-31 05:37:31 +0000546
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500547#if defined(CONFIG_BOOTP_VENDOREX)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000548 x = dhcp_vendorex_prep(e);
549 if (x)
wdenk232c1502004-03-12 00:14:09 +0000550 return x - start;
wdenk3861aa52002-09-27 23:19:37 +0000551#endif
552
wdenk232c1502004-03-12 00:14:09 +0000553 *e++ = 55; /* Parameter Request List */
554 cnt = e++; /* Pointer to count of requested items */
555 *cnt = 0;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500556#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk232c1502004-03-12 00:14:09 +0000557 *e++ = 1; /* Subnet Mask */
558 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000559#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500560#if defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkea287de2005-04-01 00:25:43 +0000561 *e++ = 2;
562 *cnt += 1;
563#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500564#if defined(CONFIG_BOOTP_GATEWAY)
wdenk232c1502004-03-12 00:14:09 +0000565 *e++ = 3; /* Router Option */
566 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000567#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500568#if defined(CONFIG_BOOTP_DNS)
wdenk232c1502004-03-12 00:14:09 +0000569 *e++ = 6; /* DNS Server(s) */
570 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000571#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500572#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk232c1502004-03-12 00:14:09 +0000573 *e++ = 12; /* Hostname */
574 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000575#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500576#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk232c1502004-03-12 00:14:09 +0000577 *e++ = 13; /* Boot File Size */
578 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000579#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500580#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk232c1502004-03-12 00:14:09 +0000581 *e++ = 17; /* Boot path */
582 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000583#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500584#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk232c1502004-03-12 00:14:09 +0000585 *e++ = 40; /* NIS Domain name request */
586 *cnt += 1;
wdenk3861aa52002-09-27 23:19:37 +0000587#endif
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500588#if defined(CONFIG_BOOTP_NTPSERVER)
wdenkea287de2005-04-01 00:25:43 +0000589 *e++ = 42;
590 *cnt += 1;
591#endif
Jason Liu258ccd62010-11-14 12:23:09 +0800592 /* no options, so back up to avoid sending an empty request list */
593 if (*cnt == 0)
594 e -= 2;
595
wdenk232c1502004-03-12 00:14:09 +0000596 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000597
wdenk232c1502004-03-12 00:14:09 +0000598 /* Pad to minimal length */
wdenk3861aa52002-09-27 23:19:37 +0000599#ifdef CONFIG_DHCP_MIN_EXT_LEN
Simon Glass21076f62011-02-02 15:03:28 -0800600 while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN)
wdenk232c1502004-03-12 00:14:09 +0000601 *e++ = 0;
wdenk3861aa52002-09-27 23:19:37 +0000602#endif
603
wdenk232c1502004-03-12 00:14:09 +0000604 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000605}
606
Jon Loeliger610f2e92007-07-10 11:05:02 -0500607#else
wdenk3861aa52002-09-27 23:19:37 +0000608/*
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000609 * Warning: no field size check - change CONFIG_BOOTP_* at your own risk!
wdenk3861aa52002-09-27 23:19:37 +0000610 */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500611static int bootp_extended(u8 *e)
wdenk3861aa52002-09-27 23:19:37 +0000612{
wdenk232c1502004-03-12 00:14:09 +0000613 u8 *start = e;
wdenk3861aa52002-09-27 23:19:37 +0000614
wdenk232c1502004-03-12 00:14:09 +0000615 *e++ = 99; /* RFC1048 Magic Cookie */
616 *e++ = 130;
617 *e++ = 83;
618 *e++ = 99;
wdenk3861aa52002-09-27 23:19:37 +0000619
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500620#if defined(CONFIG_CMD_DHCP)
wdenk232c1502004-03-12 00:14:09 +0000621 *e++ = 53; /* DHCP Message Type */
622 *e++ = 1;
623 *e++ = DHCP_DISCOVER;
wdenk3861aa52002-09-27 23:19:37 +0000624
wdenk232c1502004-03-12 00:14:09 +0000625 *e++ = 57; /* Maximum DHCP Message Size */
626 *e++ = 2;
Joe Hershbergerf8315732012-05-23 07:58:14 +0000627 *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16;
628 *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
Jon Loeliger610f2e92007-07-10 11:05:02 -0500629#endif
wdenk3861aa52002-09-27 23:19:37 +0000630
Alexander Graf4570a992016-05-06 21:01:02 +0200631 add_vci(e);
Ilya Yanok9ace17c2012-09-17 10:26:25 +0000632
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500633#if defined(CONFIG_BOOTP_SUBNETMASK)
wdenk232c1502004-03-12 00:14:09 +0000634 *e++ = 1; /* Subnet mask request */
635 *e++ = 4;
636 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000637#endif
638
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500639#if defined(CONFIG_BOOTP_GATEWAY)
wdenk232c1502004-03-12 00:14:09 +0000640 *e++ = 3; /* Default gateway request */
641 *e++ = 4;
642 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000643#endif
644
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500645#if defined(CONFIG_BOOTP_DNS)
wdenk232c1502004-03-12 00:14:09 +0000646 *e++ = 6; /* Domain Name Server */
647 *e++ = 4;
648 e += 4;
wdenk3861aa52002-09-27 23:19:37 +0000649#endif
650
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500651#if defined(CONFIG_BOOTP_HOSTNAME)
wdenk232c1502004-03-12 00:14:09 +0000652 *e++ = 12; /* Host name request */
653 *e++ = 32;
654 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000655#endif
656
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500657#if defined(CONFIG_BOOTP_BOOTFILESIZE)
wdenk232c1502004-03-12 00:14:09 +0000658 *e++ = 13; /* Boot file size */
659 *e++ = 2;
660 e += 2;
wdenk3861aa52002-09-27 23:19:37 +0000661#endif
662
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500663#if defined(CONFIG_BOOTP_BOOTPATH)
wdenk232c1502004-03-12 00:14:09 +0000664 *e++ = 17; /* Boot path */
665 *e++ = 32;
666 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000667#endif
668
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500669#if defined(CONFIG_BOOTP_NISDOMAIN)
wdenk232c1502004-03-12 00:14:09 +0000670 *e++ = 40; /* NIS Domain name request */
671 *e++ = 32;
672 e += 32;
wdenk3861aa52002-09-27 23:19:37 +0000673#endif
Luuk Paulussen09e3a672011-05-16 18:29:19 +0000674#if defined(CONFIG_BOOTP_NTPSERVER)
675 *e++ = 42;
676 *e++ = 4;
677 e += 4;
678#endif
wdenk3861aa52002-09-27 23:19:37 +0000679
wdenk232c1502004-03-12 00:14:09 +0000680 *e++ = 255; /* End of the list */
wdenk3861aa52002-09-27 23:19:37 +0000681
Andre Renaud166c4092016-05-05 07:28:08 -0600682 /*
683 * If nothing in list, remove it altogether. Some DHCP servers get
684 * upset by this minor faux pas and do not respond at all.
685 */
686 if (e == start + 3) {
687 printf("*** Warning: no DHCP options requested\n");
688 e -= 3;
689 }
690
wdenk232c1502004-03-12 00:14:09 +0000691 return e - start;
wdenk3861aa52002-09-27 23:19:37 +0000692}
Jon Loeliger610f2e92007-07-10 11:05:02 -0500693#endif
wdenk3861aa52002-09-27 23:19:37 +0000694
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500695void bootp_reset(void)
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600696{
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200697 bootp_num_ids = 0;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500698 bootp_try = 0;
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600699 bootp_start = get_timer(0);
Thierry Reding92ac8ac2014-08-19 10:21:24 +0200700 bootp_timeout = 250;
Stephen Warrenf59be6e2014-07-25 17:30:48 -0600701}
702
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500703void bootp_request(void)
wdenk3861aa52002-09-27 23:19:37 +0000704{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000705 uchar *pkt, *iphdr;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500706 struct bootp_hdr *bp;
Joe Hershbergerae446f52012-05-23 07:59:10 +0000707 int extlen, pktlen, iplen;
708 int eth_hdr_size;
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000709#ifdef CONFIG_BOOTP_RANDOM_DELAY
Pavel Machek8e8d73b2014-07-11 11:39:37 +0200710 ulong rand_ms;
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000711#endif
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500712 u32 bootp_id;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500713 struct in_addr zero_ip;
714 struct in_addr bcast_ip;
Alexandre Messier50768f52016-02-01 17:08:57 -0500715 char *ep; /* Environment pointer */
wdenk3861aa52002-09-27 23:19:37 +0000716
Simon Glass573f14f2011-12-10 11:08:06 +0000717 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start");
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500718#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000719 dhcp_state = INIT;
720#endif
721
Simon Glass00caae62017-08-03 12:22:12 -0600722 ep = env_get("bootpretryperiod");
Alexandre Messier50768f52016-02-01 17:08:57 -0500723 if (ep != NULL)
724 time_taken_max = simple_strtoul(ep, NULL, 10);
725 else
726 time_taken_max = TIMEOUT_MS;
727
wdenk3861aa52002-09-27 23:19:37 +0000728#ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500729 if (bootp_try == 0)
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000730 srand_mac();
wdenk3861aa52002-09-27 23:19:37 +0000731
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500732 if (bootp_try <= 2) /* Start with max 1024 * 1ms */
733 rand_ms = rand() >> (22 - bootp_try);
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000734 else /* After 3rd BOOTP request max 8192 * 1ms */
735 rand_ms = rand() >> 19;
wdenk3861aa52002-09-27 23:19:37 +0000736
Joe Hershbergereafc8db2012-05-23 07:57:58 +0000737 printf("Random delay: %ld ms...\n", rand_ms);
Pavel Machek8e8d73b2014-07-11 11:39:37 +0200738 mdelay(rand_ms);
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000739
wdenk3861aa52002-09-27 23:19:37 +0000740#endif /* CONFIG_BOOTP_RANDOM_DELAY */
741
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500742 printf("BOOTP broadcast %d\n", ++bootp_try);
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500743 pkt = net_tx_packet;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000744 memset((void *)pkt, 0, PKTSIZE);
wdenk3861aa52002-09-27 23:19:37 +0000745
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500746 eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP);
Joe Hershbergerae446f52012-05-23 07:59:10 +0000747 pkt += eth_hdr_size;
wdenk3861aa52002-09-27 23:19:37 +0000748
749 /*
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000750 * Next line results in incorrect packet size being transmitted,
751 * resulting in errors in some DHCP servers, reporting missing bytes.
752 * Size must be set in packet header after extension length has been
753 * determined.
wdenk3861aa52002-09-27 23:19:37 +0000754 * C. Hallinan, DS4.COM, Inc.
755 */
Joe Hershberger4b11c912012-05-23 07:59:07 +0000756 /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC,
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500757 sizeof (struct bootp_hdr)); */
Joe Hershberger4b11c912012-05-23 07:59:07 +0000758 iphdr = pkt; /* We need this later for net_set_udp_header() */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000759 pkt += IP_UDP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000760
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500761 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000762 bp->bp_op = OP_BOOTREQUEST;
763 bp->bp_htype = HWT_ETHER;
764 bp->bp_hlen = HWL_ETHER;
765 bp->bp_hops = 0;
Stefan Brüns454d9d32015-08-27 23:57:18 +0200766 /*
767 * according to RFC1542, should be 0 on first request, secs since
768 * first request otherwise
769 */
770 bp->bp_secs = htons(get_timer(bootp_start) / 1000);
Joe Hershberger049a95a2015-04-08 01:41:01 -0500771 zero_ip.s_addr = 0;
772 net_write_ip(&bp->bp_ciaddr, zero_ip);
773 net_write_ip(&bp->bp_yiaddr, zero_ip);
774 net_write_ip(&bp->bp_siaddr, zero_ip);
775 net_write_ip(&bp->bp_giaddr, zero_ip);
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500776 memcpy(bp->bp_chaddr, net_ethaddr, 6);
Joe Hershberger14111572015-04-08 01:41:02 -0500777 copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file));
wdenk3861aa52002-09-27 23:19:37 +0000778
779 /* Request additional information from the BOOTP/DHCP server */
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500780#if defined(CONFIG_CMD_DHCP)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500781 extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip,
782 zero_ip);
wdenk3861aa52002-09-27 23:19:37 +0000783#else
Joe Hershberger049a95a2015-04-08 01:41:01 -0500784 extlen = bootp_extended((u8 *)bp->bp_vend);
Jon Loeliger610f2e92007-07-10 11:05:02 -0500785#endif
wdenk3861aa52002-09-27 23:19:37 +0000786
787 /*
788 * Bootp ID is the lower 4 bytes of our ethernet address
Bartlomiej Sieka49f3bdb2008-10-01 15:26:28 +0200789 * plus the current time in ms.
wdenk3861aa52002-09-27 23:19:37 +0000790 */
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500791 bootp_id = ((u32)net_ethaddr[2] << 24)
792 | ((u32)net_ethaddr[3] << 16)
793 | ((u32)net_ethaddr[4] << 8)
794 | (u32)net_ethaddr[5];
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500795 bootp_id += get_timer(0);
796 bootp_id = htonl(bootp_id);
797 bootp_add_id(bootp_id);
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500798 net_copy_u32(&bp->bp_id, &bootp_id);
wdenk3861aa52002-09-27 23:19:37 +0000799
800 /*
801 * Calculate proper packet lengths taking into account the
802 * variable size of the options field
803 */
Joe Hershbergerae446f52012-05-23 07:59:10 +0000804 iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
805 pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500806 bcast_ip.s_addr = 0xFFFFFFFFL;
807 net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500808 net_set_timeout_handler(bootp_timeout, bootp_timeout_handler);
wdenk3861aa52002-09-27 23:19:37 +0000809
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500810#if defined(CONFIG_CMD_DHCP)
wdenk3861aa52002-09-27 23:19:37 +0000811 dhcp_state = SELECTING;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500812 net_set_udp_handler(dhcp_handler);
wdenk3861aa52002-09-27 23:19:37 +0000813#else
Joe Hershberger049a95a2015-04-08 01:41:01 -0500814 net_set_udp_handler(bootp_handler);
Jon Loeliger610f2e92007-07-10 11:05:02 -0500815#endif
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500816 net_send_packet(net_tx_packet, pktlen);
wdenk3861aa52002-09-27 23:19:37 +0000817}
818
Jon Loeliger643d1ab2007-07-09 17:45:14 -0500819#if defined(CONFIG_CMD_DHCP)
Stefan Brüns774c3e02015-09-04 00:31:49 +0200820static void dhcp_process_options(uchar *popt, uchar *end)
wdenk3861aa52002-09-27 23:19:37 +0000821{
wdenk3861aa52002-09-27 23:19:37 +0000822 int oplen, size;
Wolfgang Denkd8d87242009-09-11 09:05:32 +0200823#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
824 int *to_ptr;
825#endif
wdenk3861aa52002-09-27 23:19:37 +0000826
wdenk232c1502004-03-12 00:14:09 +0000827 while (popt < end && *popt != 0xff) {
wdenk3861aa52002-09-27 23:19:37 +0000828 oplen = *(popt + 1);
wdenk232c1502004-03-12 00:14:09 +0000829 switch (*popt) {
Stefan Brünsc56eb572015-08-28 10:15:54 +0200830 case 0:
831 oplen = -1; /* Pad omits len byte */
832 break;
wdenk232c1502004-03-12 00:14:09 +0000833 case 1:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500834 net_copy_ip(&net_netmask, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000835 break;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500836#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
wdenkea287de2005-04-01 00:25:43 +0000837 case 2: /* Time offset */
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500838 to_ptr = &net_ntp_time_offset;
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500839 net_copy_u32((u32 *)to_ptr, (u32 *)(popt + 2));
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500840 net_ntp_time_offset = ntohl(net_ntp_time_offset);
wdenkea287de2005-04-01 00:25:43 +0000841 break;
842#endif
wdenk232c1502004-03-12 00:14:09 +0000843 case 3:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500844 net_copy_ip(&net_gateway, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000845 break;
846 case 6:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500847 net_copy_ip(&net_dns_server, (popt + 2));
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500848#if defined(CONFIG_BOOTP_DNS2)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000849 if (*(popt + 1) > 4)
Joe Hershberger049a95a2015-04-08 01:41:01 -0500850 net_copy_ip(&net_dns_server2, (popt + 2 + 4));
stroesefe389a82003-08-28 14:17:32 +0000851#endif
wdenk232c1502004-03-12 00:14:09 +0000852 break;
853 case 12:
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000854 size = truncate_sz("Host Name",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500855 sizeof(net_hostname), oplen);
856 memcpy(&net_hostname, popt + 2, size);
857 net_hostname[size] = 0;
wdenk232c1502004-03-12 00:14:09 +0000858 break;
859 case 15: /* Ignore Domain Name Option */
860 break;
861 case 17:
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000862 size = truncate_sz("Root Path",
Joe Hershberger586cbe52015-04-08 01:41:03 -0500863 sizeof(net_root_path), oplen);
864 memcpy(&net_root_path, popt + 2, size);
865 net_root_path[size] = 0;
wdenk232c1502004-03-12 00:14:09 +0000866 break;
Brian Rzyckiee0f60d2012-09-11 09:22:53 +0000867 case 28: /* Ignore Broadcast Address Option */
868 break;
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500869#if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
wdenkea287de2005-04-01 00:25:43 +0000870 case 42: /* NTP server IP */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500871 net_copy_ip(&net_ntp_server, (popt + 2));
wdenkea287de2005-04-01 00:25:43 +0000872 break;
873#endif
wdenk232c1502004-03-12 00:14:09 +0000874 case 51:
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500875 net_copy_u32(&dhcp_leasetime, (u32 *)(popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000876 break;
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200877 case 52:
878 dhcp_option_overload = popt[2];
879 break;
wdenk232c1502004-03-12 00:14:09 +0000880 case 53: /* Ignore Message Type Option */
881 break;
882 case 54:
Joe Hershberger049a95a2015-04-08 01:41:01 -0500883 net_copy_ip(&dhcp_server_ip, (popt + 2));
wdenk232c1502004-03-12 00:14:09 +0000884 break;
885 case 58: /* Ignore Renewal Time Option */
886 break;
887 case 59: /* Ignore Rebinding Time Option */
888 break;
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100889 case 66: /* Ignore TFTP server name */
890 break;
Stefan Brünsec87b1b2015-09-04 00:31:48 +0200891 case 67: /* Bootfile option */
892 size = truncate_sz("Bootfile",
893 sizeof(net_boot_file_name), oplen);
894 memcpy(&net_boot_file_name, popt + 2, size);
895 net_boot_file_name[size] = 0;
Wolfgang Denk3b2e4fd2006-03-12 18:26:46 +0100896 break;
wdenk232c1502004-03-12 00:14:09 +0000897 default:
Jon Loeliger1fe80d72007-07-09 22:08:34 -0500898#if defined(CONFIG_BOOTP_VENDOREX)
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000899 if (dhcp_vendorex_proc(popt))
wdenk8bde7f72003-06-27 21:31:46 +0000900 break;
wdenk3861aa52002-09-27 23:19:37 +0000901#endif
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000902 printf("*** Unhandled DHCP Option in OFFER/ACK:"
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500903 " %d\n", *popt);
wdenk232c1502004-03-12 00:14:09 +0000904 break;
wdenk3861aa52002-09-27 23:19:37 +0000905 }
906 popt += oplen + 2; /* Process next option */
907 }
908}
909
Stefan Brüns774c3e02015-09-04 00:31:49 +0200910static void dhcp_packet_process_options(struct bootp_hdr *bp)
911{
912 uchar *popt = (uchar *)&bp->bp_vend[4];
913 uchar *end = popt + BOOTP_HDR_SIZE;
914
915 if (net_read_u32((u32 *)&bp->bp_vend[0]) != htonl(BOOTP_VENDOR_MAGIC))
916 return;
917
918 dhcp_option_overload = 0;
919
920 /*
921 * The 'options' field MUST be interpreted first, 'file' next,
922 * 'sname' last.
923 */
924 dhcp_process_options(popt, end);
925
926 if (dhcp_option_overload & OVERLOAD_FILE) {
927 popt = (uchar *)bp->bp_file;
928 end = popt + sizeof(bp->bp_file);
929 dhcp_process_options(popt, end);
930 }
931
932 if (dhcp_option_overload & OVERLOAD_SNAME) {
933 popt = (uchar *)bp->bp_sname;
934 end = popt + sizeof(bp->bp_sname);
935 dhcp_process_options(popt, end);
936 }
937}
938
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500939static int dhcp_message_type(unsigned char *popt)
wdenk3861aa52002-09-27 23:19:37 +0000940{
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -0500941 if (net_read_u32((u32 *)popt) != htonl(BOOTP_VENDOR_MAGIC))
wdenk3861aa52002-09-27 23:19:37 +0000942 return -1;
943
944 popt += 4;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000945 while (*popt != 0xff) {
946 if (*popt == 53) /* DHCP Message Type */
wdenk3861aa52002-09-27 23:19:37 +0000947 return *(popt + 2);
Stefan Brünsc56eb572015-08-28 10:15:54 +0200948 if (*popt == 0) {
949 /* Pad */
950 popt += 1;
951 } else {
952 /* Scan through all options */
953 popt += *(popt + 1) + 2;
954 }
wdenk3861aa52002-09-27 23:19:37 +0000955 }
956 return -1;
957}
958
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500959static void dhcp_send_request_packet(struct bootp_hdr *bp_offer)
wdenk3861aa52002-09-27 23:19:37 +0000960{
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000961 uchar *pkt, *iphdr;
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500962 struct bootp_hdr *bp;
wdenk3861aa52002-09-27 23:19:37 +0000963 int pktlen, iplen, extlen;
Joe Hershbergerae446f52012-05-23 07:59:10 +0000964 int eth_hdr_size;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500965 struct in_addr offered_ip;
966 struct in_addr zero_ip;
967 struct in_addr bcast_ip;
wdenk3861aa52002-09-27 23:19:37 +0000968
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500969 debug("dhcp_send_request_packet: Sending DHCPREQUEST\n");
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500970 pkt = net_tx_packet;
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000971 memset((void *)pkt, 0, PKTSIZE);
wdenk3861aa52002-09-27 23:19:37 +0000972
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500973 eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP);
Joe Hershbergerae446f52012-05-23 07:59:10 +0000974 pkt += eth_hdr_size;
wdenk3861aa52002-09-27 23:19:37 +0000975
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000976 iphdr = pkt; /* We'll need this later to set proper pkt size */
Joe Hershberger594c26f2012-05-23 07:58:04 +0000977 pkt += IP_UDP_HDR_SIZE;
wdenk3861aa52002-09-27 23:19:37 +0000978
Joe Hershberger7044c6b2015-04-08 01:41:09 -0500979 bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +0000980 bp->bp_op = OP_BOOTREQUEST;
981 bp->bp_htype = HWT_ETHER;
982 bp->bp_hlen = HWL_ETHER;
983 bp->bp_hops = 0;
Stefan Brüns454d9d32015-08-27 23:57:18 +0200984 bp->bp_secs = htons(get_timer(bootp_start) / 1000);
Joe Hershberger3090b7e32012-05-15 08:59:06 +0000985 /* Do not set the client IP, your IP, or server IP yet, since it
986 * hasn't been ACK'ed by the server yet */
Justin Flammiae5c794e2007-10-29 17:40:35 -0400987
Wolfgang Denkc6686702006-10-12 00:01:08 +0200988 /*
Wolfgang Denkd82718f2006-10-09 01:26:14 +0200989 * RFC3046 requires Relay Agents to discard packets with
990 * nonzero and offered giaddr
991 */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500992 zero_ip.s_addr = 0;
993 net_write_ip(&bp->bp_giaddr, zero_ip);
Wolfgang Denkd82718f2006-10-09 01:26:14 +0200994
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500995 memcpy(bp->bp_chaddr, net_ethaddr, 6);
Alexandre Messierb2b7fbc2016-01-28 11:19:02 -0500996 copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file));
wdenk3861aa52002-09-27 23:19:37 +0000997
998 /*
999 * ID is the id of the OFFER packet
1000 */
1001
Sergey Temerkhanov5917e7d2015-04-08 01:41:22 -05001002 net_copy_u32(&bp->bp_id, &bp_offer->bp_id);
wdenk3861aa52002-09-27 23:19:37 +00001003
1004 /*
1005 * Copy options from OFFER packet if present
1006 */
Justin Flammiae5c794e2007-10-29 17:40:35 -04001007
1008 /* Copy offered IP into the parameters request list */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001009 net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr);
1010 extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST,
1011 dhcp_server_ip, offered_ip);
wdenk3861aa52002-09-27 23:19:37 +00001012
Joe Hershbergerae446f52012-05-23 07:59:10 +00001013 iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
1014 pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
Joe Hershberger049a95a2015-04-08 01:41:01 -05001015 bcast_ip.s_addr = 0xFFFFFFFFL;
1016 net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen);
wdenk3861aa52002-09-27 23:19:37 +00001017
Aras Vaichasd9a2f412008-03-26 09:43:57 +11001018#ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY
1019 udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY);
1020#endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */
Joe Hershbergerf9623222012-05-23 07:59:11 +00001021 debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen);
Joe Hershberger1203fcc2015-04-08 01:41:05 -05001022 net_send_packet(net_tx_packet, pktlen);
wdenk3861aa52002-09-27 23:19:37 +00001023}
1024
1025/*
1026 * Handle DHCP received packets.
1027 */
Joe Hershberger049a95a2015-04-08 01:41:01 -05001028static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
1029 unsigned src, unsigned len)
wdenk3861aa52002-09-27 23:19:37 +00001030{
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001031 struct bootp_hdr *bp = (struct bootp_hdr *)pkt;
wdenk3861aa52002-09-27 23:19:37 +00001032
Robin Getz0ebf04c2009-07-23 03:01:03 -04001033 debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001034 src, dest, len, dhcp_state);
wdenk3861aa52002-09-27 23:19:37 +00001035
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001036 /* Filter out pkts we don't want */
Stefan Brüns867d6ae2015-08-27 23:53:26 +02001037 if (check_reply_packet(pkt, dest, src, len))
wdenk3861aa52002-09-27 23:19:37 +00001038 return;
1039
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001040 debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: "
1041 "%d\n", src, dest, len, dhcp_state);
wdenk3861aa52002-09-27 23:19:37 +00001042
Peng Fan44c42dd2016-01-07 15:28:23 +08001043 if (net_read_ip(&bp->bp_yiaddr).s_addr == 0)
1044 return;
1045
wdenk3861aa52002-09-27 23:19:37 +00001046 switch (dhcp_state) {
1047 case SELECTING:
1048 /*
1049 * Wait an appropriate time for any potential DHCPOFFER packets
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001050 * to arrive. Then select one, and generate DHCPREQUEST
1051 * response. If filename is in format we recognize, assume it
1052 * is a valid OFFER from a server we want.
wdenk3861aa52002-09-27 23:19:37 +00001053 */
Robin Getz0ebf04c2009-07-23 03:01:03 -04001054 debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001055#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +00001056 if (strncmp(bp->bp_file,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001057 CONFIG_SYS_BOOTFILE_PREFIX,
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001058 strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001059#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
Stefan Brüns774c3e02015-09-04 00:31:49 +02001060 dhcp_packet_process_options(bp);
Alexander Graf0efe1bc2016-05-06 21:01:01 +02001061 efi_net_set_dhcp_ack(pkt, len);
wdenk3861aa52002-09-27 23:19:37 +00001062
Robin Getz0ebf04c2009-07-23 03:01:03 -04001063 debug("TRANSITIONING TO REQUESTING STATE\n");
wdenk3861aa52002-09-27 23:19:37 +00001064 dhcp_state = REQUESTING;
stroese759a51b2003-04-10 13:26:44 +00001065
Joe Hershbergerbc0571f2015-04-08 01:41:21 -05001066 net_set_timeout_handler(5000, bootp_timeout_handler);
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001067 dhcp_send_request_packet(bp);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001068#ifdef CONFIG_SYS_BOOTFILE_PREFIX
wdenk3861aa52002-09-27 23:19:37 +00001069 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001070#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
wdenk3861aa52002-09-27 23:19:37 +00001071
1072 return;
1073 break;
1074 case REQUESTING:
Robin Getz0ebf04c2009-07-23 03:01:03 -04001075 debug("DHCP State: REQUESTING\n");
wdenk3861aa52002-09-27 23:19:37 +00001076
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001077 if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) {
Stefan Brüns774c3e02015-09-04 00:31:49 +02001078 dhcp_packet_process_options(bp);
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001079 /* Store net params from reply */
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001080 store_net_params(bp);
wdenk3861aa52002-09-27 23:19:37 +00001081 dhcp_state = BOUND;
Thierry Reding92ac8ac2014-08-19 10:21:24 +02001082 printf("DHCP client bound to address %pI4 (%lu ms)\n",
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001083 &net_ip, get_timer(bootp_start));
Stefan Brüns4f28c9b2015-08-30 17:47:17 +02001084 net_set_timeout_handler(0, (thand_f *)0);
Simon Glass573f14f2011-12-10 11:08:06 +00001085 bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP,
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001086 "bootp_stop");
wdenk3861aa52002-09-27 23:19:37 +00001087
Simon Glasse4a3d572011-10-27 06:24:32 +00001088 net_auto_load();
wdenk3861aa52002-09-27 23:19:37 +00001089 return;
1090 }
1091 break;
Remy Bohmer51dfe132008-08-20 11:30:28 +02001092 case BOUND:
1093 /* DHCP client bound to address */
1094 break;
wdenk3861aa52002-09-27 23:19:37 +00001095 default:
Joe Hershberger3090b7e32012-05-15 08:59:06 +00001096 puts("DHCP: INVALID STATE\n");
wdenk3861aa52002-09-27 23:19:37 +00001097 break;
1098 }
wdenk3861aa52002-09-27 23:19:37 +00001099}
1100
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001101void dhcp_request(void)
wdenk3861aa52002-09-27 23:19:37 +00001102{
Joe Hershberger7044c6b2015-04-08 01:41:09 -05001103 bootp_request();
wdenk3861aa52002-09-27 23:19:37 +00001104}
Wolfgang Denk992742a2007-11-03 23:09:27 +01001105#endif /* CONFIG_CMD_DHCP */