2  *	Based on LiMon - BOOTP.
8  *	Copyright 2000-2004 Wolfgang Denk, wd@denx.de
29  * counter of fixed-length timeout periods. TIMEOUT_COUNT represents
97 		size_t size = sizeof(bootp_ids) - sizeof(id);  in bootp_add_id()
100 		bootp_ids[bootp_num_ids - 1] = id;  in bootp_add_id()
125 		retval = -1;  in check_reply_packet()
126 	else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE)  in check_reply_packet()
127 		retval = -2;  in check_reply_packet()
128 	else if (bp->bp_op != OP_BOOTREPLY)  in check_reply_packet()
129 		retval = -3;  in check_reply_packet()
130 	else if (bp->bp_htype != HWT_ETHER)  in check_reply_packet()
131 		retval = -4;  in check_reply_packet()
132 	else if (bp->bp_hlen != HWL_ETHER)  in check_reply_packet()
133 		retval = -5;  in check_reply_packet()
134 	else if (!bootp_match_id(net_read_u32(&bp->bp_id)))  in check_reply_packet()
135 		retval = -6;  in check_reply_packet()
136 	else if (memcmp(bp->bp_chaddr, net_ethaddr, HWL_ETHER) != 0)  in check_reply_packet()
137 		retval = -7;  in check_reply_packet()
152 	net_copy_ip(&tmp_ip, &bp->bp_siaddr);  in store_net_params()
154 		net_copy_ip(&net_server_ip, &bp->bp_siaddr);  in store_net_params()
156 	       ((struct ethernet_hdr *)net_rx_packet)->et_src, 6);  in store_net_params()
161 	    (strlen(bp->bp_file) > 0)) {  in store_net_params()
162 		copy_filename(net_boot_file_name, bp->bp_file,  in store_net_params()
175 	net_copy_ip(&net_ip, &bp->bp_yiaddr);  in store_net_params()
181 		printf("*** WARNING: %s is too long (%d - max: %d)"  in truncate_sz()
182 			" - truncated\n", name, curlen, maxlen);  in truncate_sz()
183 		curlen = maxlen - 1;  in truncate_sz()
205 	case 2:			/* Time offset - Not yet supported */  in bootp_process_vendor_field()
212 	case 4:			/* Time server - Not yet supported */  in bootp_process_vendor_field()
214 	case 5:			/* IEN-116 name server - Not yet supported */  in bootp_process_vendor_field()
226 	case 7:			/* Log server - Not yet supported */  in bootp_process_vendor_field()
228 	case 8:			/* Cookie/Quote server - Not yet supported */  in bootp_process_vendor_field()
230 	case 9:			/* LPR server - Not yet supported */  in bootp_process_vendor_field()
232 	case 10:		/* Impress server - Not yet supported */  in bootp_process_vendor_field()
234 	case 11:		/* RPL server - Not yet supported */  in bootp_process_vendor_field()
252 	case 14:		/* Merit dump file - Not yet supported */  in bootp_process_vendor_field()
254 	case 15:		/* Domain name - Not yet supported */  in bootp_process_vendor_field()
256 	case 16:		/* Swap server - Not yet supported */  in bootp_process_vendor_field()
266 	case 18:		/* Extension path - Not yet supported */  in bootp_process_vendor_field()
288 	case 43:		/* Vendor specific info - Not yet supported */  in bootp_process_vendor_field()
369 	if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC))  in bootp_handler()
370 		bootp_process_vendor((uchar *)&bp->bp_vend[4], len);  in bootp_handler()
405 #define put_vci(e, str)						\  argument
408 		*e++ = 60;	/* Vendor Class Identifier */	\
409 		*e++ = vci_strlen;				\
410 		memcpy(e, str, vci_strlen);			\
411 		e += vci_strlen;				\
414 static u8 *add_vci(u8 *e)  in add_vci()  argument
429 		put_vci(e, vci);  in add_vci()
431 	return e;  in add_vci()
438 static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip,  in dhcp_extended()  argument
441 	u8 *start = e;  in dhcp_extended()
446 	int clientarch = -1;  in dhcp_extended()
455 	*e++ = 99;		/* RFC1048 Magic Cookie */  in dhcp_extended()
456 	*e++ = 130;  in dhcp_extended()
457 	*e++ = 83;  in dhcp_extended()
458 	*e++ = 99;  in dhcp_extended()
460 	*e++ = 53;		/* DHCP Message Type */  in dhcp_extended()
461 	*e++ = 1;  in dhcp_extended()
462 	*e++ = message_type;  in dhcp_extended()
464 	*e++ = 57;		/* Maximum DHCP Message Size */  in dhcp_extended()
465 	*e++ = 2;  in dhcp_extended()
466 	*e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8;  in dhcp_extended()
467 	*e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;  in dhcp_extended()
472 		*e++ = 54;	/* ServerID */  in dhcp_extended()
473 		*e++ = 4;  in dhcp_extended()
474 		*e++ = tmp >> 24;  in dhcp_extended()
475 		*e++ = tmp >> 16;  in dhcp_extended()
476 		*e++ = tmp >> 8;  in dhcp_extended()
477 		*e++ = tmp & 0xff;  in dhcp_extended()
483 		*e++ = 50;	/* Requested IP */  in dhcp_extended()
484 		*e++ = 4;  in dhcp_extended()
485 		*e++ = tmp >> 24;  in dhcp_extended()
486 		*e++ = tmp >> 16;  in dhcp_extended()
487 		*e++ = tmp >> 8;  in dhcp_extended()
488 		*e++ = tmp & 0xff;  in dhcp_extended()
495 		*e++ = 12;	/* Hostname */  in dhcp_extended()
496 		*e++ = hostnamelen;  in dhcp_extended()
497 		memcpy(e, hostname, hostnamelen);  in dhcp_extended()
498 		e += hostnamelen;  in dhcp_extended()
510 		*e++ = 93;	/* Client System Architecture */  in dhcp_extended()
511 		*e++ = 2;  in dhcp_extended()
512 		*e++ = (clientarch >> 8) & 0xff;  in dhcp_extended()
513 		*e++ = clientarch & 0xff;  in dhcp_extended()
516 	*e++ = 94;	/* Client Network Interface Identifier */  in dhcp_extended()
517 	*e++ = 3;  in dhcp_extended()
518 	*e++ = 1;	/* type field for UNDI */  in dhcp_extended()
519 	*e++ = 0;	/* major revision */  in dhcp_extended()
520 	*e++ = 0;	/* minor revision */  in dhcp_extended()
527 			*e++ = 97;	/* Client Machine Identifier */  in dhcp_extended()
528 			*e++ = 17;  in dhcp_extended()
529 			*e++ = 0;	/* type 0 - UUID */  in dhcp_extended()
531 			uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD);  in dhcp_extended()
532 			e += 16;  in dhcp_extended()
539 	e = add_vci(e);  in dhcp_extended()
542 	x = dhcp_vendorex_prep(e);  in dhcp_extended()
544 		return x - start;  in dhcp_extended()
547 	*e++ = 55;		/* Parameter Request List */  in dhcp_extended()
548 	 cnt = e++;		/* Pointer to count of requested items */  in dhcp_extended()
551 	*e++  = 1;		/* Subnet Mask */  in dhcp_extended()
555 	*e++  = 2;  in dhcp_extended()
559 	*e++  = 3;		/* Router Option */  in dhcp_extended()
563 	*e++  = 6;		/* DNS Server(s) */  in dhcp_extended()
567 	*e++  = 12;		/* Hostname */  in dhcp_extended()
571 	*e++  = 13;		/* Boot File Size */  in dhcp_extended()
575 	*e++  = 17;		/* Boot path */  in dhcp_extended()
579 	*e++  = 40;		/* NIS Domain name request */  in dhcp_extended()
583 	*e++  = 42;  in dhcp_extended()
588 		e -= 2;  in dhcp_extended()
590 	*e++  = 255;		/* End of the list */  in dhcp_extended()
594 	while ((e - start) < CONFIG_DHCP_MIN_EXT_LEN)  in dhcp_extended()
595 		*e++ = 0;  in dhcp_extended()
598 	return e - start;  in dhcp_extended()
603  * Warning: no field size check - change CONFIG_BOOTP_* at your own risk!
605 static int bootp_extended(u8 *e)  in bootp_extended()  argument
607 	u8 *start = e;  in bootp_extended()
609 	*e++ = 99;		/* RFC1048 Magic Cookie */  in bootp_extended()
610 	*e++ = 130;  in bootp_extended()
611 	*e++ = 83;  in bootp_extended()
612 	*e++ = 99;  in bootp_extended()
615 	*e++ = 53;		/* DHCP Message Type */  in bootp_extended()
616 	*e++ = 1;  in bootp_extended()
617 	*e++ = DHCP_DISCOVER;  in bootp_extended()
619 	*e++ = 57;		/* Maximum DHCP Message Size */  in bootp_extended()
620 	*e++ = 2;  in bootp_extended()
621 	*e++ = (576 - 312 + OPT_FIELD_SIZE) >> 16;  in bootp_extended()
622 	*e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;  in bootp_extended()
625 	add_vci(e);  in bootp_extended()
628 	*e++ = 1;		/* Subnet mask request */  in bootp_extended()
629 	*e++ = 4;  in bootp_extended()
630 	e   += 4;  in bootp_extended()
634 	*e++ = 3;		/* Default gateway request */  in bootp_extended()
635 	*e++ = 4;  in bootp_extended()
636 	e   += 4;  in bootp_extended()
640 	*e++ = 6;		/* Domain Name Server */  in bootp_extended()
641 	*e++ = 4;  in bootp_extended()
642 	e   += 4;  in bootp_extended()
646 	*e++ = 12;		/* Host name request */  in bootp_extended()
647 	*e++ = 32;  in bootp_extended()
648 	e   += 32;  in bootp_extended()
652 	*e++ = 13;		/* Boot file size */  in bootp_extended()
653 	*e++ = 2;  in bootp_extended()
654 	e   += 2;  in bootp_extended()
658 	*e++ = 17;		/* Boot path */  in bootp_extended()
659 	*e++ = 32;  in bootp_extended()
660 	e   += 32;  in bootp_extended()
664 	*e++ = 40;		/* NIS Domain name request */  in bootp_extended()
665 	*e++ = 32;  in bootp_extended()
666 	e   += 32;  in bootp_extended()
669 	*e++ = 42;  in bootp_extended()
670 	*e++ = 4;  in bootp_extended()
671 	e   += 4;  in bootp_extended()
674 	*e++ = 255;		/* End of the list */  in bootp_extended()
680 	if (e == start + 3) {  in bootp_extended()
682 		e -= 3;  in bootp_extended()
685 	return e - start;  in bootp_extended()
727 		rand_ms = rand() >> (22 - bootp_try);  in bootp_request()
756 	bp->bp_op = OP_BOOTREQUEST;  in bootp_request()
757 	bp->bp_htype = HWT_ETHER;  in bootp_request()
758 	bp->bp_hlen = HWL_ETHER;  in bootp_request()
759 	bp->bp_hops = 0;  in bootp_request()
764 	bp->bp_secs = htons(get_timer(bootp_start) / 1000);  in bootp_request()
766 	net_write_ip(&bp->bp_ciaddr, zero_ip);  in bootp_request()
767 	net_write_ip(&bp->bp_yiaddr, zero_ip);  in bootp_request()
768 	net_write_ip(&bp->bp_siaddr, zero_ip);  in bootp_request()
769 	net_write_ip(&bp->bp_giaddr, zero_ip);  in bootp_request()
770 	memcpy(bp->bp_chaddr, net_ethaddr, 6);  in bootp_request()
771 	copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file));  in bootp_request()
775 	extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip,  in bootp_request()
778 	extlen = bootp_extended((u8 *)bp->bp_vend);  in bootp_request()
792 	net_copy_u32(&bp->bp_id, &bootp_id);  in bootp_request()
798 	iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;  in bootp_request()
825 			oplen = -1; /* Pad omits len byte */  in dhcp_process_options()
906 	uchar *popt = (uchar *)&bp->bp_vend[4];  in dhcp_packet_process_options()
909 	if (net_read_u32((u32 *)&bp->bp_vend[0]) != htonl(BOOTP_VENDOR_MAGIC))  in dhcp_packet_process_options()
921 		popt = (uchar *)bp->bp_file;  in dhcp_packet_process_options()
922 		end = popt + sizeof(bp->bp_file);  in dhcp_packet_process_options()
927 		popt = (uchar *)bp->bp_sname;  in dhcp_packet_process_options()
928 		end = popt + sizeof(bp->bp_sname);  in dhcp_packet_process_options()
936 		return -1;  in dhcp_message_type()
950 	return -1;  in dhcp_message_type()
974 	bp->bp_op = OP_BOOTREQUEST;  in dhcp_send_request_packet()
975 	bp->bp_htype = HWT_ETHER;  in dhcp_send_request_packet()
976 	bp->bp_hlen = HWL_ETHER;  in dhcp_send_request_packet()
977 	bp->bp_hops = 0;  in dhcp_send_request_packet()
978 	bp->bp_secs = htons(get_timer(bootp_start) / 1000);  in dhcp_send_request_packet()
987 	net_write_ip(&bp->bp_giaddr, zero_ip);  in dhcp_send_request_packet()
989 	memcpy(bp->bp_chaddr, net_ethaddr, 6);  in dhcp_send_request_packet()
990 	copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file));  in dhcp_send_request_packet()
996 	net_copy_u32(&bp->bp_id, &bp_offer->bp_id);  in dhcp_send_request_packet()
1003 	net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr);  in dhcp_send_request_packet()
1004 	extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST,  in dhcp_send_request_packet()
1007 	iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;  in dhcp_send_request_packet()
1037 	if (net_read_ip(&bp->bp_yiaddr).s_addr == 0)  in dhcp_handler()
1048 		debug("DHCP: state=SELECTING bp_file: \"%s\"\n", bp->bp_file);  in dhcp_handler()
1050 		if (strncmp(bp->bp_file,  in dhcp_handler()
1071 		if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) {  in dhcp_handler()