2 * Based on LiMon - BOOTP.
4 * Copyright 1994, 1995, 2000 Neil Russell.
6 * Copyright 2000 Roland Borde
7 * Copyright 2000 Paolo Scaffardi
8 * Copyright 2000-2002 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...)
27 #ifdef CONFIG_STATUS_LED
28 #include <status_led.h>
31 #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */
33 #if (CONFIG_COMMANDS & CFG_CMD_NET)
35 #define TIMEOUT 5 /* Seconds before trying BOOTP again */
36 #ifndef CONFIG_NET_RETRY_COUNT
37 # define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
39 # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
42 #define PORT_BOOTPS 67 /* BOOTP server UDP port */
43 #define PORT_BOOTPC 68 /* BOOTP client UDP port */
45 #ifndef CONFIG_DHCP_MIN_EXT_LEN /* minimal length of extension list */
46 #define CONFIG_DHCP_MIN_EXT_LEN 64
51 #ifdef CONFIG_BOOTP_RANDOM_DELAY
55 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
56 dhcp_state_t dhcp_state = INIT;
57 unsigned long dhcp_leasetime = 0;
58 IPaddr_t NetDHCPServerIP = 0;
59 static void DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len);
63 static char *dhcpmsg2str(int type)
66 case 1: return "DHCPDISCOVER"; break;
67 case 2: return "DHCPOFFER"; break;
68 case 3: return "DHCPREQUEST"; break;
69 case 4: return "DHCPDECLINE"; break;
70 case 5: return "DHCPACK"; break;
71 case 6: return "DHCPNACK"; break;
72 case 7: return "DHCPRELEASE"; break;
73 default: return "UNKNOWN/INVALID MSG TYPE"; break;
78 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
79 extern u8 *dhcp_vendorex_prep (u8 *e); /*rtn new e after add own opts. */
80 extern u8 *dhcp_vendorex_proc (u8 *e); /*rtn next e if mine,else NULL */
83 #endif /* CFG_CMD_DHCP */
85 static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len)
87 Bootp_t *bp = (Bootp_t *) pkt;
90 if (dest != PORT_BOOTPC || src != PORT_BOOTPS)
92 else if (len < sizeof (Bootp_t) - OPT_SIZE)
94 else if (bp->bp_op != OP_BOOTREQUEST &&
95 bp->bp_op != OP_BOOTREPLY &&
96 bp->bp_op != DHCP_OFFER &&
97 bp->bp_op != DHCP_ACK &&
98 bp->bp_op != DHCP_NAK ) {
101 else if (bp->bp_htype != HWT_ETHER)
103 else if (bp->bp_hlen != HWL_ETHER)
105 else if (NetReadLong((ulong*)&bp->bp_id) != BootpID) {
109 debug ("Filtering pkt = %d\n", retval);
115 * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet
117 static void BootpCopyNetParams(Bootp_t *bp)
119 NetCopyIP(&NetOurIP, &bp->bp_yiaddr);
120 NetCopyIP(&NetServerIP, &bp->bp_siaddr);
121 memcpy (NetServerEther, ((Ethernet_t *)NetRxPkt)->et_src, 6);
122 copy_filename (BootFile, bp->bp_file, sizeof(BootFile));
124 debug ("Bootfile: %s\n", BootFile);
126 /* Propagate to environment:
127 * don't delete exising entry when BOOTP / DHCP reply does
128 * not contain a new value
131 setenv ("bootfile", BootFile);
135 static int truncate_sz (const char *name, int maxlen, int curlen)
137 if (curlen >= maxlen) {
138 printf("*** WARNING: %s is too long (%d - max: %d) - truncated\n",
139 name, curlen, maxlen);
145 #if !(CONFIG_COMMANDS & CFG_CMD_DHCP)
147 static void BootpVendorFieldProcess(u8 *ext)
149 int size = *(ext+1) ;
151 debug_ext ("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, *(ext+1));
156 /* Fixed length fields */
157 case 1: /* Subnet mask */
158 if (NetOurSubnetMask == 0)
159 NetCopyIP(&NetOurSubnetMask, (IPaddr_t*)(ext+2));
161 case 2: /* Time offset - Not yet supported */
163 /* Variable length fields */
164 case 3: /* Gateways list */
165 if (NetOurGatewayIP == 0) {
166 NetCopyIP(&NetOurGatewayIP, (IPaddr_t*)(ext+2));
169 case 4: /* Time server - Not yet supported */
171 case 5: /* IEN-116 name server - Not yet supported */
174 if (NetOurDNSIP == 0) {
175 NetCopyIP(&NetOurDNSIP, (IPaddr_t*)(ext+2));
178 case 7: /* Log server - Not yet supported */
180 case 8: /* Cookie/Quote server - Not yet supported */
182 case 9: /* LPR server - Not yet supported */
184 case 10: /* Impress server - Not yet supported */
186 case 11: /* RPL server - Not yet supported */
188 case 12: /* Host name */
189 if (NetOurHostName[0] == 0) {
190 size = truncate_sz("Host Name", sizeof(NetOurHostName), size);
191 memcpy(&NetOurHostName, ext+2, size);
192 NetOurHostName[size] = 0 ;
195 case 13: /* Boot file size */
197 NetBootFileSize = ntohs(*(ushort*)(ext+2));
199 NetBootFileSize = ntohl(*(ulong*)(ext+2));
201 case 14: /* Merit dump file - Not yet supported */
203 case 15: /* Domain name - Not yet supported */
205 case 16: /* Swap server - Not yet supported */
207 case 17: /* Root path */
208 if (NetOurRootPath[0] == 0) {
209 size = truncate_sz("Root Path", sizeof(NetOurRootPath), size);
210 memcpy(&NetOurRootPath, ext+2, size);
211 NetOurRootPath[size] = 0 ;
214 case 18: /* Extension path - Not yet supported */
216 * This can be used to send the information of the
217 * vendor area in another file that the client can
221 /* IP host layer fields */
222 case 40: /* NIS Domain name */
223 if (NetOurNISDomain[0] == 0) {
224 size = truncate_sz ("NIS Domain Name",
225 sizeof(NetOurNISDomain),
227 memcpy(&NetOurNISDomain, ext+2, size);
228 NetOurNISDomain[size] = 0 ;
231 /* Application layer fields */
232 case 43: /* Vendor specific info - Not yet supported */
234 * Binary information to exchange specific
235 * product information.
238 /* Reserved (custom) fields (128..254) */
242 static void BootpVendorProcess(u8 *ext, int size)
244 u8 *end = ext + size ;
246 debug_ext ("[BOOTP] Checking extension (%d bytes)...\n", size);
248 while ((ext < end) && (*ext != 0xff)) {
255 BootpVendorFieldProcess (opt) ;
259 #ifdef DEBUG_BOOTP_EXT
260 printf("[BOOTP] Received fields: \n");
261 if (NetOurSubnetMask) {
262 puts ("NetOurSubnetMask : ");
263 print_IPaddr (NetOurSubnetMask);
267 if (NetOurGatewayIP) {
268 puts ("NetOurGatewayIP : ");
269 print_IPaddr (NetOurGatewayIP);
273 if (NetBootFileSize) {
274 printf("NetBootFileSize : %d\n", NetBootFileSize);
277 if (NetOurHostName[0]) {
278 printf("NetOurHostName : %s\n", NetOurHostName);
281 if (NetOurRootPath[0]) {
282 printf("NetOurRootPath : %s\n", NetOurRootPath);
285 if (NetOurNISDomain[0]) {
286 printf("NetOurNISDomain : %s\n", NetOurNISDomain);
289 if (NetBootFileSize) {
290 printf("NetBootFileSize: %d\n", NetBootFileSize);
292 #endif /* DEBUG_BOOTP_EXT */
296 * Handle a BOOTP received packet.
299 BootpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
304 debug ("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%d)\n",
305 src, dest, len, sizeof (Bootp_t));
309 if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */
313 * Got a good BOOTP reply. Copy the data into our variables.
315 #ifdef CONFIG_STATUS_LED
316 status_led_set (STATUS_LED_BOOT, STATUS_LED_OFF);
319 BootpCopyNetParams(bp); /* Store net parameters from reply */
321 /* Retrieve extended information (we must parse the vendor area) */
322 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
323 BootpVendorProcess(&bp->bp_vend[4], len);
325 NetSetTimeout(0, (thand_f *)0);
327 debug ("Got good BOOTP\n");
329 if (((s = getenv("autoload")) != NULL) && (*s == 'n')) {
331 * Just use BOOTP to configure system;
332 * Do not use TFTP to load the bootfile.
334 NetState = NETLOOP_SUCCESS;
340 #endif /* !CFG_CMD_DHCP */
343 * Timeout on BOOTP/DHCP request.
348 if (BootpTry >= TIMEOUT_COUNT) {
349 puts ("\nRetry count exceeded; starting again\n");
352 NetSetTimeout (TIMEOUT * CFG_HZ, BootpTimeout);
358 * Initialize BOOTP extension fields in the request.
360 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
361 static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP)
365 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
369 *e++ = 99; /* RFC1048 Magic Cookie */
374 *e++ = 53; /* DHCP Message Type */
378 *e++ = 57; /* Maximum DHCP Message Size */
380 *e++ = (576-312+OPT_SIZE) >> 8;
381 *e++ = (576-312+OPT_SIZE) & 0xff;
384 int tmp = ntohl(ServerID);
386 *e++ = 54; /* ServerID */
395 int tmp = ntohl(RequestedIP);
397 *e++ = 50; /* Requested IP */
405 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
406 if ((x = dhcp_vendorex_prep (e)))
410 *e++ = 55; /* Parameter Request List */
411 cnt = e++; /* Pointer to count of requested items */
413 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK)
414 *e++ = 1; /* Subnet Mask */
417 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY)
418 *e++ = 3; /* Router Option */
421 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS)
422 *e++ = 6; /* DNS Server(s) */
425 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME)
426 *e++ = 12; /* Hostname */
429 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE)
430 *e++ = 13; /* Boot File Size */
433 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH)
434 *e++ = 17; /* Boot path */
437 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN)
438 *e++ = 40; /* NIS Domain name request */
441 *e++ = 255; /* End of the list */
443 /* Pad to minimal length */
444 #ifdef CONFIG_DHCP_MIN_EXT_LEN
445 while ((e - start) <= CONFIG_DHCP_MIN_EXT_LEN)
452 #else /* CFG_CMD_DHCP */
454 * Warning: no field size check - change CONFIG_BOOTP_MASK at your own risk!
456 static int BootpExtended (u8 *e)
460 *e++ = 99; /* RFC1048 Magic Cookie */
465 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
466 *e++ = 53; /* DHCP Message Type */
468 *e++ = DHCP_DISCOVER;
470 *e++ = 57; /* Maximum DHCP Message Size */
472 *e++ = (576-312+OPT_SIZE) >> 16;
473 *e++ = (576-312+OPT_SIZE) & 0xff;
474 #endif /* CFG_CMD_DHCP */
476 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SUBNETMASK)
477 *e++ = 1; /* Subnet mask request */
482 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_GATEWAY)
483 *e++ = 3; /* Default gateway request */
488 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS)
489 *e++ = 6; /* Domain Name Server */
494 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_HOSTNAME)
495 *e++ = 12; /* Host name request */
500 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTFILESIZE)
501 *e++ = 13; /* Boot file size */
506 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_BOOTPATH)
507 *e++ = 17; /* Boot path */
512 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_NISDOMAIN)
513 *e++ = 40; /* NIS Domain name request */
518 *e++ = 255; /* End of the list */
522 #endif /* CFG_CMD_DHCP */
527 volatile uchar *pkt, *iphdr;
529 int ext_len, pktlen, iplen;
531 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
535 #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */
536 unsigned char bi_enetaddr[6];
540 ulong tst1, tst2, sum, m_mask, m_value = 0;
544 reg = getenv_r ("ethaddr", tmp, sizeof(tmp));
545 s = (reg > 0) ? tmp : NULL;
547 for (reg=0; reg<6; ++reg) {
548 bi_enetaddr[reg] = s ? simple_strtoul(s, &e, 16) : 0;
554 printf("BootpRequest => Our Mac: ");
555 for (reg=0; reg<6; reg++) {
558 reg==5 ? '\n' : ':');
562 /* Mac-Manipulation 2 get seed1 */
565 for (reg=2; reg<6; reg++) {
567 tst1 = tst1 | bi_enetaddr[reg];
569 for (reg=0; reg<2; reg++) {
570 tst2 = tst2 | bi_enetaddr[reg];
578 for (reg=1;reg<=32;reg++) {
579 m_value |= (m_mask & seed1);
581 m_value = m_value << 1;
587 /* Random Number Generator */
589 for (reg=0;reg<=0;reg++) {
591 if (sum < seed1 || sum < seed2)
596 if (BootpTry<=2) { /* Start with max 1024 * 1ms */
597 sum = sum >> (22-BootpTry);
598 } else { /*After 3rd BOOTP request max 8192 * 1ms */
603 printf ("Random delay: %ld ms...\n", sum);
604 for (reg=0; reg <sum; reg++) {
605 udelay(1000); /*Wait 1ms*/
607 #endif /* CONFIG_BOOTP_RANDOM_DELAY */
609 printf("BOOTP broadcast %d\n", ++BootpTry);
611 memset ((void*)pkt, 0, PKTSIZE);
613 NetSetEther(pkt, NetBcastAddr, PROT_IP);
614 pkt += ETHER_HDR_SIZE;
617 * Next line results in incorrect packet size being transmitted, resulting
618 * in errors in some DHCP servers, reporting missing bytes. Size must be
619 * set in packet header after extension length has been determined.
620 * C. Hallinan, DS4.COM, Inc.
622 /* NetSetIP(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, sizeof (Bootp_t)); */
623 iphdr = pkt; /* We need this later for NetSetIP() */
627 bp->bp_op = OP_BOOTREQUEST;
628 bp->bp_htype = HWT_ETHER;
629 bp->bp_hlen = HWL_ETHER;
631 bp->bp_secs = htons(get_timer(0) / CFG_HZ);
632 NetWriteIP(&bp->bp_ciaddr, 0);
633 NetWriteIP(&bp->bp_yiaddr, 0);
634 NetWriteIP(&bp->bp_siaddr, 0);
635 NetWriteIP(&bp->bp_giaddr, 0);
636 memcpy (bp->bp_chaddr, NetOurEther, 6);
637 copy_filename (bp->bp_file, BootFile, sizeof(bp->bp_file));
639 /* Request additional information from the BOOTP/DHCP server */
640 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
641 ext_len = DhcpExtended(bp->bp_vend, DHCP_DISCOVER, 0, 0);
643 ext_len = BootpExtended(bp->bp_vend);
644 #endif /* CFG_CMD_DHCP */
647 * Bootp ID is the lower 4 bytes of our ethernet address
648 * plus the current time in HZ.
650 BootpID = ((ulong)NetOurEther[2] << 24)
651 | ((ulong)NetOurEther[3] << 16)
652 | ((ulong)NetOurEther[4] << 8)
653 | (ulong)NetOurEther[5];
654 BootpID += get_timer(0);
655 BootpID = htonl(BootpID);
656 NetCopyLong(&bp->bp_id, &BootpID);
659 * Calculate proper packet lengths taking into account the
660 * variable size of the options field
662 pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + ext_len;
663 iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len;
664 NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
665 NetSetTimeout(SELECT_TIMEOUT * CFG_HZ, BootpTimeout);
667 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
668 dhcp_state = SELECTING;
669 NetSetHandler(DhcpHandler);
671 NetSetHandler(BootpHandler);
672 #endif /* CFG_CMD_DHCP */
673 NetSendPacket(NetTxPacket, pktlen);
676 #if (CONFIG_COMMANDS & CFG_CMD_DHCP)
677 static void DhcpOptionsProcess(uchar *popt)
679 uchar *end = popt + BOOTP_HDR_SIZE;
682 while ( popt < end && *popt != 0xff ) {
686 NetCopyIP(&NetOurSubnetMask, (popt+2));
689 NetCopyIP(&NetOurGatewayIP, (popt+2));
692 NetCopyIP(&NetOurDNSIP, (popt+2));
695 size = truncate_sz ("Host Name",
696 sizeof(NetOurHostName),
698 memcpy(&NetOurHostName, popt+2, size);
699 NetOurHostName[size] = 0 ;
701 case 15: /* Ignore Domain Name Option */
704 size = truncate_sz ("Root Path",
705 sizeof(NetOurRootPath),
707 memcpy(&NetOurRootPath, popt+2, size);
708 NetOurRootPath[size] = 0 ;
711 NetCopyLong (&dhcp_leasetime, (ulong *)(popt + 2));
713 case 53: /* Ignore Message Type Option */
716 NetCopyIP(&NetDHCPServerIP, (popt+2));
718 case 58: /* Ignore Renewal Time Option */
720 case 59: /* Ignore Rebinding Time Option */
723 #if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
724 if (dhcp_vendorex_proc(popt))
727 printf("*** Unhandled DHCP Option in OFFER/ACK: %d\n",
731 popt += oplen + 2; /* Process next option */
735 static int DhcpMessageType(unsigned char *popt)
737 if (NetReadLong((ulong*)popt) != htonl(BOOTP_VENDOR_MAGIC))
741 while ( *popt != 0xff ) {
742 if ( *popt == 53 ) /* DHCP Message Type */
744 popt += *(popt + 1) + 2; /* Scan through all options */
749 static void DhcpSendRequestPkt(Bootp_t *bp_offer)
751 volatile uchar *pkt, *iphdr;
753 int pktlen, iplen, extlen;
756 debug ("DhcpSendRequestPkt: Sending DHCPREQUEST\n");
758 memset ((void*)pkt, 0, PKTSIZE);
760 NetSetEther(pkt, NetBcastAddr, PROT_IP);
761 pkt += ETHER_HDR_SIZE;
763 iphdr = pkt; /* We'll need this later to set proper pkt size */
767 bp->bp_op = OP_BOOTREQUEST;
768 bp->bp_htype = HWT_ETHER;
769 bp->bp_hlen = HWL_ETHER;
771 bp->bp_secs = htons(get_timer(0) / CFG_HZ);
772 NetCopyIP(&bp->bp_ciaddr, &bp_offer->bp_ciaddr); /* both in network byte order */
773 NetCopyIP(&bp->bp_yiaddr, &bp_offer->bp_yiaddr);
774 NetCopyIP(&bp->bp_siaddr, &bp_offer->bp_siaddr);
775 NetCopyIP(&bp->bp_giaddr, &bp_offer->bp_giaddr);
776 memcpy (bp->bp_chaddr, NetOurEther, 6);
779 * ID is the id of the OFFER packet
782 NetCopyLong(&bp->bp_id, &bp_offer->bp_id);
785 * Copy options from OFFER packet if present
787 NetCopyIP(&OfferedIP, &bp->bp_yiaddr);
788 extlen = DhcpExtended(bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP);
790 pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen;
791 iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
792 NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
794 debug ("Transmitting DHCPREQUEST packet: len = %d\n", pktlen);
795 NetSendPacket(NetTxPacket, pktlen);
799 * Handle DHCP received packets.
802 DhcpHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
804 Bootp_t *bp = (Bootp_t *)pkt;
806 debug ("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n",
807 src, dest, len, dhcp_state);
809 if (BootpCheckPkt(pkt, dest, src, len)) /* Filter out pkts we don't want */
812 debug ("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: %d\n",
813 src, dest, len, dhcp_state);
815 switch (dhcp_state) {
818 * Wait an appropriate time for any potential DHCPOFFER packets
819 * to arrive. Then select one, and generate DHCPREQUEST response.
820 * If filename is in format we recognize, assume it is a valid
821 * OFFER from a server we want.
823 debug ("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);
824 #ifdef CFG_BOOTFILE_PREFIX
825 if (strncmp(bp->bp_file,
827 strlen(CFG_BOOTFILE_PREFIX)) == 0 ) {
828 #endif /* CFG_BOOTFILE_PREFIX */
830 debug ("TRANSITIONING TO REQUESTING STATE\n");
831 dhcp_state = REQUESTING;
833 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
834 DhcpOptionsProcess(&bp->bp_vend[4]);
836 BootpCopyNetParams(bp); /* Store net params from reply */
838 NetSetTimeout(TIMEOUT * CFG_HZ, BootpTimeout);
839 DhcpSendRequestPkt(bp);
840 #ifdef CFG_BOOTFILE_PREFIX
842 #endif /* CFG_BOOTFILE_PREFIX */
847 debug ("DHCP State: REQUESTING\n");
849 if ( DhcpMessageType(bp->bp_vend) == DHCP_ACK ) {
852 if (NetReadLong((ulong*)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))
853 DhcpOptionsProcess(&bp->bp_vend[4]);
854 BootpCopyNetParams(bp); /* Store net params from reply */
856 printf("DHCP client bound to address ");
857 print_IPaddr(NetOurIP);
860 /* Obey the 'autoload' setting */
861 if (((s = getenv("autoload")) != NULL) && (*s == 'n')) {
862 NetState = NETLOOP_SUCCESS;
870 printf("DHCP: INVALID STATE\n");
876 void DhcpRequest(void)
880 #endif /* CFG_CMD_DHCP */
882 #endif /* CFG_CMD_NET */