2 * Based on LiMon - BOOTP.
4 * Copyright 1994, 1995, 2000 Neil Russell.
6 * Copyright 2000 Roland Borde
7 * Copyright 2000 Paolo Scaffardi
8 * Copyright 2000-2004 Wolfgang Denk, wd@denx.de
12 #define DEBUG 1 /* general debug */
13 #define DEBUG_BOOTP_EXT 1 /* Debug received vendor fields */
16 #ifdef DEBUG_BOOTP_EXT
17 #define debug_ext(fmt,args...) printf (fmt ,##args)
19 #define debug_ext(fmt,args...)
28 #ifdef CONFIG_STATUS_LED
29 #include <status_led.h>
32 #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */
34 #if (CONFIG_COMMANDS & CFG_CMD_NET)
36 #define TIMEOUT 5 /* Seconds before trying BOOTP again */
37 #ifndef CONFIG_NET_RETRY_COUNT
38 # define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
40 # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
43 #define PORT_BOOTPS 67 /* BOOTP server UDP port */
44 #define PORT_BOOTPC 68 /* BOOTP client UDP port */
46 #ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */
47 #define CONFIG_DHCP_MIN_EXT_LEN 64
52 #ifdef CONFIG_BOOTP_RANDOM_DELAY
56 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
57 dhcp_state_t dhcp_state = INIT;
58 unsigned long dhcp_leasetime = 0;
59 IPaddr_t NetDHCPServerIP = 0;
60 static void DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len);
64 static char *dhcpmsg2str(int type)
67 case 1: return "DHCPDISCOVER"; break;
68 case 2: return "DHCPOFFER"; break;
69 case 3: return "DHCPREQUEST"; break;
70 case 4: return "DHCPDECLINE"; break;
71 case 5: return "DHCPACK"; break;
72 case 6: return "DHCPNACK"; break;
73 case 7: return "DHCPRELEASE"; break;
74 default: return "UNKNOWN/INVALID MSG TYPE"; break;
79 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
80 extern u8 *dhcp_vendorex_prep (u8 *e); /*rtn new e after add own opts. */
81 extern u8 *dhcp_vendorex_proc (u8 *e); /*rtn next e if mine,else NULL */
84 #endif /* CFG_CMD_DHCP */
86 static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len)
88 Bootp_t *bp = (Bootp_t *) pkt;
91 if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
93 else if (len < sizeof (Bootp_t) - OPT_SIZE)
95 else if (bp->bp_op != OP_BOOTREQUEST &&
96 bp->bp_op != OP_BOOTREPLY &&
97 bp->bp_op != DHCP_OFFER &&
98 bp->bp_op != DHCP_ACK &&
99 bp->bp_op != DHCP_NAK ) {
102 else if (bp->bp_htype != HWT_ETHER)
104 else if (bp->bp_hlen != HWL_ETHER)
106 else if (NetReadLong((ulong*)&bp->bp_id) != BootpID) {
110 debug ("Filtering pkt = %d\n", retval);
116 * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
118 static void BootpCopyNetParams(Bootp_t *bp)
120 NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
121 NetCopyIP(&NetServerIP, &bp->bp_siaddr);
122 memcpy (NetServerEther, ((Ethernet_t *)NetRxPkt)->et_src, 6);
123 copy_filename (BootFile, bp->bp_file, sizeof(BootFile));
125 debug ("Bootfile: %s\n", BootFile);
127 /* Propagate to environment:
128 * don't delete exising entry when BOOTP / DHCP reply does
129 * not contain a new value
132 setenv ("bootfile", BootFile);
136 static int truncate_sz (const char *name, int maxlen, int curlen)
138 if (curlen >= maxlen) {
139 printf("*** WARNING: %s is too long (%d - max: %d) - truncated\n",
140 name, curlen, maxlen);
146 #if !(CONFIG_COMMANDS & CFG_CMD_DHCP)
148 static void BootpVendorFieldProcess (u8 * ext)
150 int size = *(ext + 1);
152 debug_ext ("[BOOTP] Processing extension %d... (%d bytes)\n", *ext,
158 /* Fixed length fields */
159 case 1: /* Subnet mask */
160 if (NetOurSubnetMask == 0)
161 NetCopyIP (&NetOurSubnetMask, (IPaddr_t *) (ext + 2));
163 case 2: /* Time offset - Not yet supported */
165 /* Variable length fields */
166 case 3: /* Gateways list */
167 if (NetOurGatewayIP == 0) {
168 NetCopyIP (&NetOurGatewayIP, (IPaddr_t *) (ext + 2));
171 case 4: /* Time server - Not yet supported */
173 case 5: /* IEN-116 name server - Not yet supported */
176 if (NetOurDNSIP == 0) {
177 NetCopyIP (&NetOurDNSIP, (IPaddr_t *) (ext + 2));
179 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
180 if ((NetOurDNS2IP == 0) && (size > 4)) {
181 NetCopyIP (&NetOurDNS2IP, (IPaddr_t *) (ext + 2 + 4));
185 case 7: /* Log server - Not yet supported */
187 case 8: /* Cookie/Quote server - Not yet supported */
189 case 9: /* LPR server - Not yet supported */
191 case 10: /* Impress server - Not yet supported */
193 case 11: /* RPL server - Not yet supported */
195 case 12: /* Host name */
196 if (NetOurHostName[0] == 0) {
197 size = truncate_sz ("Host Name", sizeof (NetOurHostName), size);
198 memcpy (&NetOurHostName, ext + 2, size);
199 NetOurHostName[size] = 0;
202 case 13: /* Boot file size */
204 NetBootFileSize = ntohs (*(ushort *) (ext + 2));
206 NetBootFileSize = ntohl (*(ulong *) (ext + 2));
208 case 14: /* Merit dump file - Not yet supported */
210 case 15: /* Domain name - Not yet supported */
212 case 16: /* Swap server - Not yet supported */
214 case 17: /* Root path */
215 if (NetOurRootPath[0] == 0) {
216 size = truncate_sz ("Root Path", sizeof (NetOurRootPath), size);
217 memcpy (&NetOurRootPath, ext + 2, size);
218 NetOurRootPath[size] = 0;
221 case 18: /* Extension path - Not yet supported */
223 * This can be used to send the information of the
224 * vendor area in another file that the client can
228 /* IP host layer fields */
229 case 40: /* NIS Domain name */
230 if (NetOurNISDomain[0] == 0) {
231 size = truncate_sz ("NIS Domain Name", sizeof (NetOurNISDomain), size);
232 memcpy (&NetOurNISDomain, ext + 2, size);
233 NetOurNISDomain[size] = 0;
236 /* Application layer fields */
237 case 43: /* Vendor specific info - Not yet supported */
239 * Binary information to exchange specific
240 * product information.
243 /* Reserved (custom) fields (128..254) */
247 static void BootpVendorProcess (u8 * ext, int size)
249 u8 *end = ext + size;
251 debug_ext ("[BOOTP] Checking extension (%d bytes)...\n", size);
253 while ((ext < end) && (*ext != 0xff)) {
261 BootpVendorFieldProcess (opt);
265 #ifdef DEBUG_BOOTP_EXT
266 printf ("[BOOTP] Received fields: \n");
267 if (NetOurSubnetMask) {
268 puts ("NetOurSubnetMask : ");
269 print_IPaddr (NetOurSubnetMask);
273 if (NetOurGatewayIP) {
274 puts ("NetOurGatewayIP : ");
275 print_IPaddr (NetOurGatewayIP);
279 if (NetBootFileSize) {
280 printf ("NetBootFileSize : %d\n", NetBootFileSize);
283 if (NetOurHostName[0]) {
284 printf ("NetOurHostName : %s\n", NetOurHostName);
287 if (NetOurRootPath[0]) {
288 printf ("NetOurRootPath : %s\n", NetOurRootPath);
291 if (NetOurNISDomain[0]) {
292 printf ("NetOurNISDomain : %s\n", NetOurNISDomain);
295 if (NetBootFileSize) {
296 printf ("NetBootFileSize: %d\n", NetBootFileSize);
298 #endif /* DEBUG_BOOTP_EXT */
301 * Handle a BOOTP received packet.
304 BootpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
309 debug ("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%d)\n",
310 src, dest, len, sizeof (Bootp_t));
314 if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */
318 * Got a good BOOTP reply. Copy the data into our variables.
320 #ifdef CONFIG_STATUS_LED
321 status_led_set (STATUS_LED_BOOT, STATUS_LED_OFF);
324 BootpCopyNetParams(bp); /* Store net parameters from reply */
326 /* Retrieve extended information (we must parse the vendor area) */
327 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
328 BootpVendorProcess(&bp->bp_vend[4], len);
330 NetSetTimeout(0, (thand_f *)0);
332 debug ("Got good BOOTP\n");
334 if ((s = getenv("autoload")) != NULL) {
337 * Just use BOOTP to configure system;
338 * Do not use TFTP to load the bootfile.
340 NetState = NETLOOP_SUCCESS;
342 } else if (strcmp(s, "NFS") == 0) {
344 * Use NFS to load the bootfile.
353 #endif /* !CFG_CMD_DHCP */
356 * Timeout on BOOTP/DHCP request.
361 if (BootpTry >= TIMEOUT_COUNT) {
362 puts ("\nRetry count exceeded; starting again\n");
365 NetSetTimeout (TIMEOUT * CFG_HZ, BootpTimeout);
371 * Initialize BOOTP extension fields in the request.
373 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
374 static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP)
379 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
382 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME)
386 *e++ = 99; /* RFC1048 Magic Cookie */
391 *e++ = 53; /* DHCP Message Type */
395 *e++ = 57; /* Maximum DHCP Message Size */
397 *e++ = (576 - 312 + OPT_SIZE) >> 8;
398 *e++ = (576 - 312 + OPT_SIZE) & 0xff;
401 int tmp = ntohl (ServerID);
403 *e++ = 54; /* ServerID */
412 int tmp = ntohl (RequestedIP);
414 *e++ = 50; /* Requested IP */
421 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME)
422 if ((hostname = getenv ("hostname"))) {
423 int hostnamelen = strlen (hostname);
425 *e++ = 12; /* Hostname */
427 memcpy (e, hostname, hostnamelen);
432 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
433 if ((x = dhcp_vendorex_prep (e)))
437 *e++ = 55; /* Parameter Request List */
438 cnt = e++; /* Pointer to count of requested items */
440 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK)
441 *e++ = 1; /* Subnet Mask */
444 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY)
445 *e++ = 3; /* Router Option */
448 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS)
449 *e++ = 6; /* DNS Server(s) */
452 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME)
453 *e++ = 12; /* Hostname */
456 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE)
457 *e++ = 13; /* Boot File Size */
460 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH)
461 *e++ = 17; /* Boot path */
464 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN)
465 *e++ = 40; /* NIS Domain name request */
468 *e++ = 255; /* End of the list */
470 /* Pad to minimal length */
471 #ifdef CONFIG_DHCP_MIN_EXT_LEN
472 while ((e - start) <= CONFIG_DHCP_MIN_EXT_LEN)
479 #else /* CFG_CMD_DHCP */
481 * Warning: no field size check - change CONFIG_BOOTP_MASK at your own risk!
483 static int BootpExtended (u8 * e)
487 *e++ = 99; /* RFC1048 Magic Cookie */
492 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
493 *e++ = 53; /* DHCP Message Type */
495 *e++ = DHCP_DISCOVER;
497 *e++ = 57; /* Maximum DHCP Message Size */
499 *e++ = (576 - 312 + OPT_SIZE) >> 16;
500 *e++ = (576 - 312 + OPT_SIZE) & 0xff;
501 #endif /* CFG_CMD_DHCP */
503 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK)
504 *e++ = 1; /* Subnet mask request */
509 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY)
510 *e++ = 3; /* Default gateway request */
515 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS)
516 *e++ = 6; /* Domain Name Server */
521 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME)
522 *e++ = 12; /* Host name request */
527 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE)
528 *e++ = 13; /* Boot file size */
533 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH)
534 *e++ = 17; /* Boot path */
539 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN)
540 *e++ = 40; /* NIS Domain name request */
545 *e++ = 255; /* End of the list */
549 #endif /* CFG_CMD_DHCP */
554 volatile uchar *pkt, *iphdr;
556 int ext_len, pktlen, iplen;
558 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
562 #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
563 unsigned char bi_enetaddr[6];
567 ulong tst1, tst2, sum, m_mask, m_value = 0;
571 reg = getenv_r ("ethaddr", tmp, sizeof(tmp));
572 s = (reg > 0) ? tmp : NULL;
574 for (reg=0; reg<6; ++reg) {
575 bi_enetaddr[reg] = s ? simple_strtoul(s, &e, 16) : 0;
581 printf("BootpRequest => Our Mac: ");
582 for (reg=0; reg<6; reg++) {
585 reg==5 ? '\n' : ':');
589 /* Mac-Manipulation 2 get seed1 */
592 for (reg=2; reg<6; reg++) {
594 tst1 = tst1 | bi_enetaddr[reg];
596 for (reg=0; reg<2; reg++) {
597 tst2 = tst2 | bi_enetaddr[reg];
605 for (reg=1;reg<=32;reg++) {
606 m_value |= (m_mask & seed1);
608 m_value = m_value << 1;
614 /* Random Number Generator */
616 for (reg=0;reg<=0;reg++) {
618 if (sum < seed1 || sum < seed2)
623 if (BootpTry<=2) { /* Start with max 1024 * 1ms */
624 sum = sum >> (22-BootpTry);
625 } else { /*After 3rd BOOTP request max 8192 * 1ms */
630 printf ("Random delay: %ld ms...\n", sum);
631 for (reg=0; reg <sum; reg++) {
632 udelay(1000); /*Wait 1ms*/
634 #endif /* CONFIG_BOOTP_RANDOM_DELAY */
636 printf("BOOTP broadcast %d\n", ++BootpTry);
638 memset ((void*)pkt, 0, PKTSIZE);
640 NetSetEther(pkt, NetBcastAddr, PROT_IP);
641 pkt += ETHER_HDR_SIZE;
644 * Next line results in incorrect packet size being transmitted, resulting
645 * in errors in some DHCP servers, reporting missing bytes. Size must be
646 * set in packet header after extension length has been determined.
647 * C. Hallinan, DS4.COM, Inc.
649 /* NetSetIP(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, sizeof (Bootp_t)); */
650 iphdr = pkt; /* We need this later for NetSetIP() */
654 bp->bp_op = OP_BOOTREQUEST;
655 bp->bp_htype = HWT_ETHER;
656 bp->bp_hlen = HWL_ETHER;
658 bp->bp_secs = htons(get_timer(0) / CFG_HZ);
659 NetWriteIP(&bp->bp_ciaddr, 0);
660 NetWriteIP(&bp->bp_yiaddr, 0);
661 NetWriteIP(&bp->bp_siaddr, 0);
662 NetWriteIP(&bp->bp_giaddr, 0);
663 memcpy (bp->bp_chaddr, NetOurEther, 6);
664 copy_filename (bp->bp_file, BootFile, sizeof(bp->bp_file));
666 /* Request additional information from the BOOTP/DHCP server */
667 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
668 ext_len = DhcpExtended(bp->bp_vend, DHCP_DISCOVER, 0, 0);
670 ext_len = BootpExtended(bp->bp_vend);
671 #endif /* CFG_CMD_DHCP */
674 * Bootp ID is the lower 4 bytes of our ethernet address
675 * plus the current time in HZ.
677 BootpID = ((ulong)NetOurEther[2] << 24)
678 | ((ulong)NetOurEther[3] << 16)
679 | ((ulong)NetOurEther[4] << 8)
680 | (ulong)NetOurEther[5];
681 BootpID += get_timer(0);
682 BootpID = htonl(BootpID);
683 NetCopyLong(&bp->bp_id, &BootpID);
686 * Calculate proper packet lengths taking into account the
687 * variable size of the options field
689 pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + ext_len;
690 iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len;
691 NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
692 NetSetTimeout(SELECT_TIMEOUT * CFG_HZ, BootpTimeout);
694 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
695 dhcp_state = SELECTING;
696 NetSetHandler(DhcpHandler);
698 NetSetHandler(BootpHandler);
699 #endif /* CFG_CMD_DHCP */
700 NetSendPacket(NetTxPacket, pktlen);
703 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
704 static void DhcpOptionsProcess (uchar * popt)
706 uchar *end = popt + BOOTP_HDR_SIZE;
709 while (popt < end && *popt != 0xff) {
713 NetCopyIP (&NetOurSubnetMask, (popt + 2));
716 NetCopyIP (&NetOurGatewayIP, (popt + 2));
719 NetCopyIP (&NetOurDNSIP, (popt + 2));
720 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
721 if (*(popt + 1) > 4) {
722 NetCopyIP (&NetOurDNS2IP, (popt + 2 + 4));
727 size = truncate_sz ("Host Name", sizeof (NetOurHostName), oplen);
728 memcpy (&NetOurHostName, popt + 2, size);
729 NetOurHostName[size] = 0;
731 case 15: /* Ignore Domain Name Option */
734 size = truncate_sz ("Root Path", sizeof (NetOurRootPath), oplen);
735 memcpy (&NetOurRootPath, popt + 2, size);
736 NetOurRootPath[size] = 0;
739 NetCopyLong (&dhcp_leasetime, (ulong *) (popt + 2));
741 case 53: /* Ignore Message Type Option */
744 NetCopyIP (&NetDHCPServerIP, (popt + 2));
746 case 58: /* Ignore Renewal Time Option */
748 case 59: /* Ignore Rebinding Time Option */
751 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
752 if (dhcp_vendorex_proc (popt))
755 printf ("*** Unhandled DHCP Option in OFFER/ACK: %d\n", *popt);
758 popt += oplen + 2; /* Process next option */
762 static int DhcpMessageType(unsigned char *popt)
764 if (NetReadLong((ulong*)popt) != htonl(BOOTP_VENDOR_MAGIC))
768 while ( *popt != 0xff ) {
769 if ( *popt == 53 ) /* DHCP Message Type */
771 popt += *(popt + 1) + 2; /* Scan through all options */
776 static void DhcpSendRequestPkt(Bootp_t *bp_offer)
778 volatile uchar *pkt, *iphdr;
780 int pktlen, iplen, extlen;
783 debug ("DhcpSendRequestPkt: Sending DHCPREQUEST\n");
785 memset ((void*)pkt, 0, PKTSIZE);
787 NetSetEther(pkt, NetBcastAddr, PROT_IP);
788 pkt += ETHER_HDR_SIZE;
790 iphdr = pkt; /* We'll need this later to set proper pkt size */
794 bp->bp_op = OP_BOOTREQUEST;
795 bp->bp_htype = HWT_ETHER;
796 bp->bp_hlen = HWL_ETHER;
798 bp->bp_secs = htons(get_timer(0) / CFG_HZ);
799 NetCopyIP(&bp->bp_ciaddr, &bp_offer->bp_ciaddr); /* both in network byte order */
800 NetCopyIP(&bp->bp_yiaddr, &bp_offer->bp_yiaddr);
801 NetCopyIP(&bp->bp_siaddr, &bp_offer->bp_siaddr);
802 NetCopyIP(&bp->bp_giaddr, &bp_offer->bp_giaddr);
803 memcpy (bp->bp_chaddr, NetOurEther, 6);
806 * ID is the id of the OFFER packet
809 NetCopyLong(&bp->bp_id, &bp_offer->bp_id);
812 * Copy options from OFFER packet if present
814 NetCopyIP(&OfferedIP, &bp->bp_yiaddr);
815 extlen = DhcpExtended(bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP);
817 pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen;
818 iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
819 NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
821 debug ("Transmitting DHCPREQUEST packet: len = %d\n", pktlen);
822 NetSendPacket(NetTxPacket, pktlen);
826 * Handle DHCP received packets.
829 DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
831 Bootp_t *bp = (Bootp_t *)pkt;
833 debug ("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
834 src, dest, len, dhcp_state);
836 if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */
839 debug ("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: %d\n",
840 src, dest, len, dhcp_state);
842 switch (dhcp_state) {
845 * Wait an appropriate time for any potential DHCPOFFER packets
846 * to arrive. Then select one, and generate DHCPREQUEST response.
847 * If filename is in format we recognize, assume it is a valid
848 * OFFER from a server we want.
850 debug ("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);
851 #ifdef CFG_BOOTFILE_PREFIX
852 if (strncmp(bp->bp_file,
854 strlen(CFG_BOOTFILE_PREFIX)) == 0 ) {
855 #endif /* CFG_BOOTFILE_PREFIX */
857 debug ("TRANSITIONING TO REQUESTING STATE\n");
858 dhcp_state = REQUESTING;
860 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
861 DhcpOptionsProcess(&bp->bp_vend[4]);
863 BootpCopyNetParams(bp); /* Store net params from reply */
865 NetSetTimeout(TIMEOUT * CFG_HZ, BootpTimeout);
866 DhcpSendRequestPkt(bp);
867 #ifdef CFG_BOOTFILE_PREFIX
869 #endif /* CFG_BOOTFILE_PREFIX */
874 debug ("DHCP State: REQUESTING\n");
876 if ( DhcpMessageType(bp->bp_vend) == DHCP_ACK ) {
879 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
880 DhcpOptionsProcess(&bp->bp_vend[4]);
881 BootpCopyNetParams(bp); /* Store net params from reply */
883 printf("DHCP client bound to address ");
884 print_IPaddr(NetOurIP);
887 /* Obey the 'autoload' setting */
888 if ((s = getenv("autoload")) != NULL) {
891 * Just use BOOTP to configure system;
892 * Do not use TFTP to load the bootfile.
894 NetState = NETLOOP_SUCCESS;
896 } else if (strcmp(s, "NFS") == 0) {
898 * Use NFS to load the bootfile.
909 printf("DHCP: INVALID STATE\n");
915 void DhcpRequest(void)
919 #endif /* CFG_CMD_DHCP */
921 #endif /* CFG_CMD_NET */