ecos: packages/redboot/current/src/net/bootp.c annotate

annotate packages/redboot/current/src/net/bootp.c @ 1246:55fbbf4dffb2

Clean up warnings

author	gthomas
date	Fri, 26 Sep 2003 10:35:43 +0000
parents	844ff6aec80b
children	c07ec2765e3e

rev	line source
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	2 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	3 // net/bootp.c
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	4 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	5 // Stand-alone minimal BOOTP support for RedBoot
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	6 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	7 //==========================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
1122 92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	12 // Copyright (C) 2002, 2003 Gary Thomas
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	13 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	14 // eCos is free software; you can redistribute it and/or modify it under
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	15 // the terms of the GNU General Public License as published by the Free
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	16 // Software Foundation; either version 2 or (at your option) any later version.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	17 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	21 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	22 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	23 // You should have received a copy of the GNU General Public License along
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	24 // with eCos; if not, write to the Free Software Foundation, Inc.,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	26 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	27 // As a special exception, if other files instantiate templates or use macros
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	28 // or inline functions from this file, or you compile this file and link it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	29 // with other works to produce a work based on this file, this file does not
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	30 // by itself cause the resulting work to be covered by the GNU General Public
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	31 // License. However the source code for this file must still be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	32 // in accordance with section (3) of the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	33 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	34 // This exception does not invalidate any other reasons why a work based on
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	35 // this file might be covered by the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	36 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
210 d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	38 // at http://sources.redhat.com/ecos/ecos-license/
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	39 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 184 diff changeset	40 //####ECOSGPLCOPYRIGHTEND####
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	41 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	42 //#####DESCRIPTIONBEGIN####
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	43 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	44 // Author(s): gthomas
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	45 // Contributors: gthomas
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	46 // Date: 2000-07-14
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	47 // Purpose:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	48 // Description:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	49 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	50 // This code is part of RedBoot (tm).
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	51 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	52 //####DESCRIPTIONEND####
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	53 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	54 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	55
184 022f1e506033 Merge from eCos master repository on 2001-10-02-17:59:22-BST jlarmour parents: 165 diff changeset	56 #include <redboot.h>
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	57 #include <net/net.h>
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	58 #include <net/bootp.h>
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	59
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	60 #define SHOULD_BE_RANDOM 0x12345555
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	61
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	62 /* How many milliseconds to wait before retrying the request */
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	63 #define RETRY_TIME 2000
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	64 #define MAX_RETRIES 8
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	65
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	66 static bootp_header_t *bp_info;
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	67
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	68 #ifdef CYGSEM_REDBOOT_NETWORKING_DHCP
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	69 static const unsigned char dhcpCookie[] = {99,130,83,99};
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	70 static const unsigned char dhcpEnd[] = {255};
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	71 static const unsigned char dhcpDiscover[] = {53,1,1};
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	72 static const unsigned char dhcpOffer[] = {53,1,2};
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	73 static const unsigned char dhcpRequest[] = {53,1,3};
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	74 static const unsigned char dhcpRequestIP[] = {50,4};
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	75 static const unsigned char dhcpAck[] = {53,1,5};
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	76 static const unsigned char dhcpNak[] = {53,1,6};
1217 0e1c2770aa9d Add new options to DHCP request - from David Vrabel gthomas parents: 1122 diff changeset	77 static const unsigned char dhcpParamRequestList[] = {55,3,1,3,6};
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	78 static enum {
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	79 DHCP_NONE = 0,
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	80 DHCP_DISCOVER,
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	81 DHCP_OFFER,
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	82 DHCP_REQUEST,
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	83 DHCP_ACK
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	84 } dhcpState;
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	85 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	86
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	87 static void
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	88 bootp_handler(udp_socket_t skt, char buf, int len,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	89 ip_route_t *src_route, word src_port)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	90 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	91 bootp_header_t *b;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	92 #ifdef CYGSEM_REDBOOT_NETWORKING_DHCP
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	93 unsigned char p, expected = 0;
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	94 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	95
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	96 b = (bootp_header_t *)buf;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	97 if (bp_info) {
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	98 memset(bp_info,0,sizeof *bp_info);
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 151 diff changeset	99 if (len > sizeof *bp_info)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 151 diff changeset	100 len = sizeof *bp_info;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	101 memcpy(bp_info, b, len);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	102 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	103
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	104 // Only accept pure REPLY responses
4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	105 if (b->bp_op != BOOTREPLY)
4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	106 return;
4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	107
4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	108 // Must be sent to me, as well!
4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	109 if (memcmp(b->bp_chaddr, __local_enet_addr, 6))
4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	110 return;
4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	111
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	112 #ifdef CYGSEM_REDBOOT_NETWORKING_DHCP
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	113 p = b->bp_vend;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	114 if (memcmp(p, dhcpCookie, sizeof(dhcpCookie)))
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	115 return;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	116 p += 4;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	117
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	118 switch (dhcpState) {
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	119 case DHCP_DISCOVER:
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	120 // The discover message has been sent, only accept an offer reply
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	121 if (memcmp(p, dhcpOffer, sizeof(dhcpOffer)) == 0) {
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	122 dhcpState = DHCP_OFFER;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	123 return;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	124 } else {
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	125 expected = (unsigned char *)dhcpOffer;
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	126 }
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	127 break;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	128 case DHCP_REQUEST:
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	129 // The request message has been sent, only accept an ack reply
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	130 if (memcmp(p, dhcpAck, sizeof(dhcpAck)) == 0) {
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	131 dhcpState = DHCP_ACK;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	132 return;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	133 } else {
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	134 expected = (unsigned char *)dhcpAck;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	135 }
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	136 break;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	137 case DHCP_NONE:
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	138 case DHCP_OFFER:
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	139 case DHCP_ACK:
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	140 // Quitely ignore these - they indicate repeated message from server
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	141 return;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	142 }
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	143 // See if we've been NAK'd - if so, give up and try again
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	144 if (memcmp(p, dhcpNak, sizeof(dhcpNak)) == 0) {
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	145 dhcpState = DHCP_NONE;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	146 return;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	147 }
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	148 diag_printf("DHCP reply: %d/%d/%d, not %d/%d/%d\n",
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	149 p[0], p[1], p[2], expected[0], expected[1], expected[2]);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	150 return;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	151 #else
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	152 // Simple BOOTP - this is all there is!
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	153 memcpy(__local_ip_addr, &b->bp_yiaddr, 4);
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	154 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	155 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	156
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	157 #define AddOption(p,d) do {memcpy(p,d,sizeof d); p += sizeof d;} while (0)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	158
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	159 /*
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	160 * Find our IP address and copy to __local_ip_addr.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	161 * Return zero if successful, -1 if not.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	162 */
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	163 int
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	164 __bootp_find_local_ip(bootp_header_t *info)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	165 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	166 udp_socket_t udp_skt;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	167 bootp_header_t b;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	168 ip_route_t r;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	169 int retry;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	170 unsigned long start;
165 d63db767121d Merge from eCos master repository on 2001-06-29-06:43:03-BST jlarmour parents: 156 diff changeset	171 ip_addr_t saved_ip_addr;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	172 #ifdef CYGSEM_REDBOOT_NETWORKING_DHCP
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	173 unsigned char *p;
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	174 int oldState;
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	175 #endif
4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	176 int txSize;
1122 92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	177 bool abort = false;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	178 static int xid = SHOULD_BE_RANDOM;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	179
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	180 #ifdef CYGSEM_REDBOOT_NETWORKING_DHCP
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	181 dhcpState = DHCP_NONE;
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	182 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	183
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	184 // Where we want the results saved
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	185 bp_info = info;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	186 // Preserve any IP address we currently have, just in case
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	187 memcpy(saved_ip_addr, __local_ip_addr, sizeof(__local_ip_addr));
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	188
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	189 // fill out route for a broadcast
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	190 r.ip_addr[0] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	191 r.ip_addr[1] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	192 r.ip_addr[2] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	193 r.ip_addr[3] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	194 r.enet_addr[0] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	195 r.enet_addr[1] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	196 r.enet_addr[2] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	197 r.enet_addr[3] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	198 r.enet_addr[4] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	199 r.enet_addr[5] = 255;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	200
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	201 // setup a socket listener for bootp replies
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	202 __udp_install_listener(&udp_skt, IPPORT_BOOTPC, bootp_handler);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	203
1122 92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	204 retry = MAX_RETRIES;
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	205 while (!abort && (retry-- > 0)) {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	206 start = MS_TICKS();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	207
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	208 // Build up the BOOTP/DHCP request
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	209 memset(&b, 0, sizeof(b));
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	210 b.bp_op = BOOTREQUEST;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	211 b.bp_htype = HTYPE_ETHERNET;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	212 b.bp_hlen = 6;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	213 b.bp_xid = xid++;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	214 memcpy(b.bp_chaddr, __local_enet_addr, 6);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	215 memset(__local_ip_addr, 0, sizeof(__local_ip_addr));
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	216
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	217 #ifdef CYGSEM_REDBOOT_NETWORKING_DHCP
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	218 p = b.bp_vend;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	219 switch (dhcpState) {
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	220 case DHCP_NONE:
1242 bc69956ed7c9 Handle DHCP retries gthomas parents: 1227 diff changeset	221 case DHCP_DISCOVER:
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	222 AddOption(p,dhcpCookie);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	223 AddOption(p,dhcpDiscover);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	224 AddOption(p,dhcpParamRequestList);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	225 AddOption(p,dhcpEnd);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	226 dhcpState = DHCP_DISCOVER;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	227 break;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	228 case DHCP_OFFER:
1243 4f0c5ba87a3a Fix more DHCP buglets gthomas parents: 1242 diff changeset	229 retry = MAX_RETRIES;
1242 bc69956ed7c9 Handle DHCP retries gthomas parents: 1227 diff changeset	230 case DHCP_REQUEST:
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	231 b.bp_xid = bp_info->bp_xid; // Match what server sent
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	232 AddOption(p,dhcpCookie);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	233 AddOption(p,dhcpRequest);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	234 AddOption(p,dhcpRequestIP);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	235 memcpy(p, &bp_info->bp_yiaddr, 4); p += 4; // Ask for the address just given
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	236 AddOption(p,dhcpParamRequestList);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	237 AddOption(p,dhcpEnd);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	238 dhcpState = DHCP_REQUEST;
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	239 memset(&b.bp_yiaddr, 0xFF, 4);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	240 memset(&b.bp_siaddr, 0xFF, 4);
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	241 memset(&b.bp_yiaddr, 0x00, 4);
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	242 memset(&b.bp_siaddr, 0x00, 4);
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	243 break;
1246 55fbbf4dffb2 Clean up warnings gthomas parents: 1245 diff changeset	244 case DHCP_ACK:
55fbbf4dffb2 Clean up warnings gthomas parents: 1245 diff changeset	245 // Ignore these states (they won't happen)
55fbbf4dffb2 Clean up warnings gthomas parents: 1245 diff changeset	246 break;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	247 }
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	248
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	249 // Some servers insist on a minimum amount of "vendor" data
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	250 if (p < &b.bp_vend[BP_MIN_VEND_SIZE]) p = &b.bp_vend[BP_MIN_VEND_SIZE];
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	251 txSize = p - (unsigned char*)&b;
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	252 oldState = dhcpState;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	253 #else
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	254 txSize = sizeof(b);
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	255 #endif
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	256
231 4ebdd3788c30 Merge gateway support from Grant Edwards gthomas parents: 210 diff changeset	257 __udp_send((char *)&b, txSize, &r, IPPORT_BOOTPS, IPPORT_BOOTPC);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	258
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	259 do {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	260 __enet_poll();
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	261 #ifdef CYGSEM_REDBOOT_NETWORKING_DHCP
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	262 if (dhcpState != oldState) {
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	263 if (dhcpState == DHCP_ACK) {
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	264 unsigned char *end;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	265 int optlen;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	266 // Address information has now arrived!
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	267 memcpy(__local_ip_addr, &bp_info->bp_yiaddr, 4);
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	268 #ifdef CYGSEM_REDBOOT_NETWORKING_USE_GATEWAY
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	269 memcpy(__local_ip_gate, &bp_info->bp_giaddr, 4);
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	270 #endif
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	271 p = bp_info->bp_vend+4;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	272 end = (unsigned char )bp_info+sizeof(bp_info);
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	273 while (p < end) {
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	274 unsigned char tag = *p;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	275 if (tag == TAG_END)
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	276 break;
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	277 if (tag == TAG_PAD)
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	278 optlen = 1;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	279 else {
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	280 optlen = p[1];
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	281 p += 2;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	282 switch (tag) {
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	283 case TAG_SUBNET_MASK: // subnet mask
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	284 memcpy(__local_ip_mask,p,4);
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	285 break;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	286 #ifdef CYGSEM_REDBOOT_NETWORKING_USE_GATEWAY
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	287 case TAG_GATEWAY: // router
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	288 memcpy(__local_ip_gate,p,4);
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	289 break;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	290 #endif
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	291 default:
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	292 break;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	293 }
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	294 }
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	295 p += optlen;
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	296 }
1245 844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	297 __udp_remove_listener(IPPORT_BOOTPC);
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	298 return 0;
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	299 } else {
844ff6aec80b Improve DHCP again gthomas parents: 1243 diff changeset	300 break; // State changed, handle it
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	301 }
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	302 }
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	303 #else
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	304 // All done, if address response has arrived
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	305 if (__local_ip_addr[0] \|\| __local_ip_addr[1] \|\|
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	306 __local_ip_addr[2] \|\| __local_ip_addr[3]) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	307 /* success */
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	308 __udp_remove_listener(IPPORT_BOOTPC);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	309 return 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	310 }
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	311 #endif
1122 92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	312 if (_rb_break(1)) {
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	313 // The user typed ^C on the console
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	314 abort = true;
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	315 break;
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	316 }
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	317 MS_TICKS_DELAY(); // Count for ^C test
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	318 } while ((MS_TICKS_DELAY() - start) < RETRY_TIME);
1122 92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	319
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	320 // Warn the user that we're polling for BOOTP info
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	321 if (retry == (MAX_RETRIES-1)) {
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	322 diag_printf("... waiting for BOOTP information\n");
92e31da869cc Add ^C abort functionality to BOOTP and PING operations. gthomas parents: 1117 diff changeset	323 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	324 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	325
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	326 // timed out
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	327 __udp_remove_listener(IPPORT_BOOTPC);
1227 54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	328 // Restore any previous IP address
54f8d0daacd4 Fix DHCP - BUG #1000053 gthomas parents: 1217 diff changeset	329 memcpy(__local_ip_addr, saved_ip_addr, sizeof(__local_ip_addr));
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	330 return -1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	331 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	332
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	333

Mercurial > ecos

annotate packages/redboot/current/src/net/bootp.c @ 1246:55fbbf4dffb2